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tcpdump/netdissect.h

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beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
/*
* Copyright (c) 1988-1997
* The Regents of the University of California. All rights reserved.
*
minor whitespace changes
2012-04-08 08:31:47 +08:00
* Copyright (c) 1998-2012 Michael Richardson <mcr@tcpdump.org>
beginnings of library version of netdissect.
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* The TCPDUMP project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef netdissect_h
#define netdissect_h
#ifdef HAVE_OS_PROTO_H
#include "os-proto.h"
#endif
#include <sys/types.h>
Apply the first step of the new way to fetch data with bounds checking Add GET_{BE|HE|LE}_, GET_U_1, GET_S_1, GET_IPV4_TO_HOST_ORDER, GET_IPV4_TO_NETWORK_ORDER macros and get_{be|he|le}_, get_u_1, get_s_1, get_ipv4_to_host_order, get_ipv4_to_network_order inline functions, with setjmp/longjmp logic to do better and easier data fetch with bounds checking. Based on Guy Harris's idea and code.
2018-05-01 00:02:43 +08:00
#include <setjmp.h>
Add a status exit code to the function ndo_error() The status are defined in an enum in status-exit-codes.h. Moreover: Use ndo_error() instead of ndo_warning() for malloc() errors in print-esp.c.
2018-02-25 18:04:39 +08:00
#include "status-exit-codes.h"
netdissect.h requires funcattrs.h ...because the former uses PRINTFLIKE_FUNCPTR(). However, it didn't have the #include. However, the problem was not visible because most files that included netdissect.h also included (directly or through another header) funcattrs.h beforehand. The only exceptions were the following two files, which apparently have not been compiled anywhere for a long time: In file included from missing/strdup.c:38: ./netdissect.h:254:8: error: expected ':', ',', ';', '}' or '__attribute__' before 'PRINTFLIKE_FUNCPTR' In file included from missing/snprintf.c:45: ./netdissect.h:254:8: error: expected ':', ',', ';', '}' or '__attribute__' before 'PRINTFLIKE_FUNCPTR' Add the missing #include to netdissect.h to eliminate this space for failure.
2021-07-30 04:12:06 +08:00
#include "funcattrs.h" /* for PRINTFLIKE_FUNCPTR() */
Fix building on AIX/POWER with XL C. "./netdissect.h", line 283.1: 1506-277 (S) Syntax error: possible missing ';' or ','? make: 1254-004 The error code from the last command is 1.
2022-06-15 17:47:01 +08:00
#include "diag-control.h" /* for ND_UNREACHABLE */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
/*
* Data types corresponding to multi-byte integral values within data
* structures. These are defined as arrays of octets, so that they're
* not aligned on their "natural" boundaries, and so that you *must*
* use the EXTRACT_ macros to extract them (which you should be doing
* *anyway*, so as not to assume a particular byte order or alignment
* in your code).
Make nd_uint8_t and nd_int8_t arrays, to catch direct references. This catches direct references, so we can change them to use EXTRACT_U_1 or EXTRACT_S_1. Also, change some structures to use the nd_ types that weren't already using them. Then make the appropriate EXTRACT_{U,S}_1() changes.
2017-12-11 08:23:34 +08:00
*
* We even want EXTRACT_U_1 used for 8-bit integral values, so we
* define nd_uint8_t and nd_int8_t as arrays as well.
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
*/
Make nd_uint8_t and nd_int8_t arrays, to catch direct references. This catches direct references, so we can change them to use EXTRACT_U_1 or EXTRACT_S_1. Also, change some structures to use the nd_ types that weren't already using them. Then make the appropriate EXTRACT_{U,S}_1() changes.
2017-12-11 08:23:34 +08:00
typedef unsigned char nd_uint8_t[1];
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
typedef unsigned char nd_uint16_t[2];
typedef unsigned char nd_uint24_t[3];
typedef unsigned char nd_uint32_t[4];
typedef unsigned char nd_uint40_t[5];
typedef unsigned char nd_uint48_t[6];
typedef unsigned char nd_uint56_t[7];
typedef unsigned char nd_uint64_t[8];
Make nd_uint8_t and nd_int8_t arrays, to catch direct references. This catches direct references, so we can change them to use EXTRACT_U_1 or EXTRACT_S_1. Also, change some structures to use the nd_ types that weren't already using them. Then make the appropriate EXTRACT_{U,S}_1() changes.
2017-12-11 08:23:34 +08:00
typedef signed char nd_int8_t[1];
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
/*
Use nd_ types, clean up ICMPv6 dissection. Use nd_ types for various packet structures, and use EXTRACT_ macros as necessary. Get rid of & in EXTRACT_ macros if not necessary. The 1-byte pad RPL suboption is called PAD1, not PAD0, in the RFC. Rename rpl_dio_printopt() to rpl_printopts() because 1) it's for all RPL messages and 2) it prints multiple options. Clean up its processing loop. Pass rpl_print() the ICMPv6 code, not a pointer to the full header; all it needs is the code. Use %u to print unsigned values. In Node Information node address lists, the TTL comes before the address, as per the RFC. Dissect it that way.
2017-12-19 13:41:03 +08:00
* "unsigned char" so that sign extension isn't done on the
* individual bytes while they're being assembled.
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
*/
Use nd_ types, clean up ICMPv6 dissection. Use nd_ types for various packet structures, and use EXTRACT_ macros as necessary. Get rid of & in EXTRACT_ macros if not necessary. The 1-byte pad RPL suboption is called PAD1, not PAD0, in the RFC. Rename rpl_dio_printopt() to rpl_printopts() because 1) it's for all RPL messages and 2) it prints multiple options. Clean up its processing loop. Pass rpl_print() the ICMPv6 code, not a pointer to the full header; all it needs is the code. Use %u to print unsigned values. In Node Information node address lists, the TTL comes before the address, as per the RFC. Dissect it that way.
2017-12-19 13:41:03 +08:00
typedef unsigned char nd_int32_t[4];
Use nd_ types, add host-endian extract routines, clean up signed vs. unsigned. We now define the structures for Linux USB headers in print-usb.c, so it doesn't need to include <pcap/usb.h>; don't check for it.
2018-01-12 03:10:21 +08:00
typedef unsigned char nd_int64_t[8];
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
Define FMAXINT only once and use it properly. [skip ci]
2020-07-28 23:02:07 +08:00
#define FMAXINT (4294967296.0) /* floating point rep. of MAXINT */
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
/*
Add some new nd_ types for use in structures for packet layouts. Note that nd_ipv4 is used for IPv4 netmasks as well as IPv4 addresses.
2017-12-11 16:08:25 +08:00
* Use this for IPv4 addresses and netmasks.
*
* It's defined as an array of octets, so that it's not guaranteed to
* be aligned on its "natural" boundary (in some packet formats, it
Add EXTRACT_ macros/functions for IPv4 addresses, get rid of structure wrappers. Add EXTRACT_IPV4_TO_HOST_ORDER() and EXTRACT_IPV4_TO_NETWORK_ORDER(); the former extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in host byte order, and the latter extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in *network* byte order. Some APIs take an address in network byte order, and some operations are more easily done in host byte order, so both are useful. Remove the structure wrappers around nd_ipv4 and nd_ipv6; that makes it easier to pass variables of those types to functions/macros that take a byte pointer as an argument (because they might be used either with pointers to structure members or raw buffer pointers), and the structure probably wouldn't do much to prevent people from using EXTRACT_BE_U_4() when they really want to extract the value in *network* byte order; using the above EXTRACT_IPV4_ calls should do more to encourage that.
2017-12-20 17:07:48 +08:00
* *isn't* so aligned). We have separate EXTRACT_ calls for them;
* sometimes you want the host-byte-order value, other times you want
* the network-byte-order value.
Expand, and update, a comment.
2017-11-20 03:34:23 +08:00
*
Add EXTRACT_ macros/functions for IPv4 addresses, get rid of structure wrappers. Add EXTRACT_IPV4_TO_HOST_ORDER() and EXTRACT_IPV4_TO_NETWORK_ORDER(); the former extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in host byte order, and the latter extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in *network* byte order. Some APIs take an address in network byte order, and some operations are more easily done in host byte order, so both are useful. Remove the structure wrappers around nd_ipv4 and nd_ipv6; that makes it easier to pass variables of those types to functions/macros that take a byte pointer as an argument (because they might be used either with pointers to structure members or raw buffer pointers), and the structure probably wouldn't do much to prevent people from using EXTRACT_BE_U_4() when they really want to extract the value in *network* byte order; using the above EXTRACT_IPV4_ calls should do more to encourage that.
2017-12-20 17:07:48 +08:00
* Don't use EXTRACT_BE_U_4() on them, use EXTRACT_IPV4_TO_HOST_ORDER()
* if you want them in host byte order and EXTRACT_IPV4_TO_NETWORK_ORDER()
* if you want them in network byte order (which you want with system APIs
* that expect network-order IPv4 addresses, such as inet_ntop()).
*
* If, on your little-endian machine (e.g., an "IBM-compatible PC", no matter
* what the OS, or an Intel Mac, no matter what the OS), you get the wrong
* answer, and you've used EXTRACT_BE_U_4(), do *N*O*T* "fix" this by using
* EXTRACT_LE_U_4(), fix it by using EXTRACT_IPV4_TO_NETWORK_ORDER(),
* otherwise you're breaking the result on big-endian machines (e.g.,
* most PowerPC/Power ISA machines, System/390 and z/Architecture, SPARC,
* etc.).
*
* Yes, people do this; that's why Wireshark has tvb_get_ipv4(), to extract
* an IPv4 address from a packet data buffer; it was introduced in reaction
* to somebody who *had* done that.
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
*/
Add EXTRACT_ macros/functions for IPv4 addresses, get rid of structure wrappers. Add EXTRACT_IPV4_TO_HOST_ORDER() and EXTRACT_IPV4_TO_NETWORK_ORDER(); the former extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in host byte order, and the latter extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in *network* byte order. Some APIs take an address in network byte order, and some operations are more easily done in host byte order, so both are useful. Remove the structure wrappers around nd_ipv4 and nd_ipv6; that makes it easier to pass variables of those types to functions/macros that take a byte pointer as an argument (because they might be used either with pointers to structure members or raw buffer pointers), and the structure probably wouldn't do much to prevent people from using EXTRACT_BE_U_4() when they really want to extract the value in *network* byte order; using the above EXTRACT_IPV4_ calls should do more to encourage that.
2017-12-20 17:07:48 +08:00
typedef unsigned char nd_ipv4[4];
Use the nd_uintN_t types more. Define them in netdissect.h. Use them in ip.h, and *don't* mark the structures as UNALIGNED; that should no longer be necessary. Add a new nd_ipv4 type to use as an IPv4 address; it represents the 4 bytes of IPv4 address as an array of unsigned chars, so that its natural alignment is only on a byte boundary. Those changes found some places where we weren't using UNALIGNED_MEMCPY() to extract IPv4 addresses from packets; use it.
2015-10-07 15:14:20 +08:00
Add some new nd_ types for use in structures for packet layouts. Note that nd_ipv4 is used for IPv4 netmasks as well as IPv4 addresses.
2017-12-11 16:08:25 +08:00
/*
* Use this for IPv6 addresses and netmasks.
*/
Add EXTRACT_ macros/functions for IPv4 addresses, get rid of structure wrappers. Add EXTRACT_IPV4_TO_HOST_ORDER() and EXTRACT_IPV4_TO_NETWORK_ORDER(); the former extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in host byte order, and the latter extracts a possibly-unaligned IPv4 address, in network byte order, returning a uint32_t in *network* byte order. Some APIs take an address in network byte order, and some operations are more easily done in host byte order, so both are useful. Remove the structure wrappers around nd_ipv4 and nd_ipv6; that makes it easier to pass variables of those types to functions/macros that take a byte pointer as an argument (because they might be used either with pointers to structure members or raw buffer pointers), and the structure probably wouldn't do much to prevent people from using EXTRACT_BE_U_4() when they really want to extract the value in *network* byte order; using the above EXTRACT_IPV4_ calls should do more to encourage that.
2017-12-20 17:07:48 +08:00
typedef unsigned char nd_ipv6[16];
Add some new nd_ types for use in structures for packet layouts. Note that nd_ipv4 is used for IPv4 netmasks as well as IPv4 addresses.
2017-12-11 16:08:25 +08:00
/*
* Use this for MAC addresses.
*/
Squelch some signed vs. unsigned warnings. They showed up on 64-bit OpenBSD 6.6.
2021-01-02 13:08:32 +08:00
#define MAC_ADDR_LEN 6U /* length of MAC addresses */
Use nd_ types in 802.x and FDDI headers. Use EXTRACT_U_1() as required by those changes. Remove no-longer-necessary & operators from other EXTRACT_ calls. While we're at it, add MAC_ADDR_LEN to netdissect.h, and use it instead of ETHER_ADDR_LEN; eliminate ETHER_ADDR_LEN. Move the maximum Ethernet length field value to ethertype.h, under the name MAX_ETHERNET_LENGTH_VAL. Move the Ethernet header structure, and the #define for the Ethernet header length, to print-ether.c; in non-Ethernet dissectors that were using the Ethernet header structure, just declare two nd_mac_addr variables for the source and destination MAC addresses and use them instead of the Ethernet header (we don't need the type field there). These changes leave nothing in ether.h, so eliminate it.
2017-12-13 02:36:21 +08:00
typedef unsigned char nd_mac_addr[MAC_ADDR_LEN];
Add some new nd_ types for use in structures for packet layouts. Note that nd_ipv4 is used for IPv4 netmasks as well as IPv4 addresses.
2017-12-11 16:08:25 +08:00
/*
* Use this for blobs of bytes; make them arrays of nd_byte.
*/
typedef unsigned char nd_byte;
Make roundup2() generally available.
2018-06-23 02:18:20 +08:00
/*
* Round up x to a multiple of y; y must be a power of 2.
*/
#ifndef roundup2
Clean up rounding up. Have roundup2() cast the power-of-2 argument to u_int; that way, you don't have to explicitly define it as an unsigned value in order to avoid compiler or UBSan complaints about signed integers. Use it instead of rolling our own rounding-to-a-power-of-2.
2019-11-11 12:51:48 +08:00
#define roundup2(x, y) (((x)+((u_int)((y)-1)))&(~((u_int)((y)-1))))
Make roundup2() generally available.
2018-06-23 02:18:20 +08:00
#endif
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
#include <stdarg.h>
Move if_printer to structure netdissect_options The structure 'netdissect_options' can hold if_printer. Thus the structure 'print_info' is useless now. Moreover: Delete useless blank lines Fix indent
2015-09-14 21:34:13 +08:00
#include <pcap.h>
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
NDOize AODV, IPv4 and SCTP decoders
2014-03-26 19:47:29 +08:00
#include "ip.h" /* struct ip for nextproto4_cksum() */
Don't overwrite the destination IPv6 address for routing headers. If we have a routing header, instead of overwriting the packet's IPv6 destination address in the packet with the final destination, so that the next protocol's checksum routine can use it, we do as we do for IPv4, and, in the "next protocol checksum" routine, scan the headers looking for a routing header and, if we find one, copy the final destination from it. While we're at it, clean up a few things.
2016-02-13 12:26:39 +08:00
#include "ip6.h" /* struct ip6 for nextproto6_cksum() */
NDOize AODV, IPv4 and SCTP decoders
2014-03-26 19:47:29 +08:00
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
#ifndef HAVE_STRLCAT
extern size_t strlcat (char *, const char *, size_t);
#endif
#ifndef HAVE_STRLCPY
extern size_t strlcpy (char *, const char *, size_t);
#endif
#ifndef HAVE_STRDUP
extern char *strdup (const char *str);
#endif
The first argument to "ascii_print_with_offset()", "ascii_print()", "hex_print_with_offset()", and "hex_print()" is a string used as a tag; make it a "const char *", not a "const u_char *". Copy the declaration of "strsep()" from "interface.h" to "netdissect.h", and get rid of the include of "interface.h" from "print-esp.c", as it includes "netdissect.h". Update the "ND_TTEST2()" macro to do the same overflow checks that "TTEST2()" now does.
2004-07-22 06:00:10 +08:00
#ifndef HAVE_STRSEP
extern char *strsep(char **, const char *);
#endif
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
struct tok {
base struct tok on unsigned rather than signed int This resolves a few Solaris-specific warnings emitted by /opt/solarisstudio12.3/bin/cc like below: warning: initializer does not fit or is out of range: 0xffffffff (also happened for 0x80000000)
2014-02-26 18:49:56 +08:00
u_int v; /* value */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
const char *s; /* string */
};
new tok2strbuf() API.
2004-04-29 10:15:41 +08:00
/* tok2str is deprecated */
Use unsigned values in tok2str and bittok2str routines. This prevents the compiler issue mentioned in GitHub issue #451, and also cleans up some other signed vs. unsigned stuff. While we're at it, clean up bittok2str_internal() (just pass it the separator string, not a Boolean value that's tested to choose the separator string), and print unknown arguments to the bittok2str routines in hex, not decimal.
2015-04-19 10:56:49 +08:00
extern const char *tok2str(const struct tok *, const char *, u_int);
extern char *bittok2str(const struct tok *, const char *, u_int);
extern char *bittok2str_nosep(const struct tok *, const char *, u_int);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Move some code around. Move stuff to initialize and clean up libraries that are used by netdissect code into nd_init() and nd_cleanup() routines in libnetdissect; this includes Winsock (which is used on Windows by, for example, the code to get names for IP addresses) and libsmi. Call nd_init() when tcpdump starts up, and call nd_cleanup() when it exits. Move util.c routines to tcpdump.c, and make them static. Use ndo->ndo_error to report a failure to open a file in print-esp.c.
2016-08-05 04:19:57 +08:00
/* Initialize netdissect. */
extern int nd_init(char *, size_t);
/* Clean up netdissect. */
extern void nd_cleanup(void);
Move more libsmi stuff to netdissect.c. Have the call to smiLoadModule() be in a nd_load_smi_module() routine. Have it set a *global* flag indicating whether a module has been loaded; that's not per-netdissect_options. Use that global flag in print-snmp.c - and don't test it once per loop iteration, it's not going to change while the loop is running. Have a routine to return the version of the library if we're built with it or NULL if we're not. That removes the last of the code that tests USE_LIBSMI or uses libsmi from tcpdump.c.
2016-08-05 05:35:35 +08:00
/* Do we have libsmi support? */
extern int nd_have_smi_support(void);
/* Load an SMI module. */
extern int nd_load_smi_module(const char *, char *, size_t);
/* Flag indicating whether an SMI module has been loaded. */
extern int nd_smi_module_loaded;
/* Version number of the SMI library, or NULL if we don't have libsmi support. */
extern const char *nd_smi_version_string(void);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
typedef struct netdissect_options netdissect_options;
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
#define IF_PRINTER_ARGS (netdissect_options *, const struct pcap_pkthdr *, const u_char *)
Apply the last step of the new way to update the link-layer header length All the link-layer dissectors are now void functions. All the functions were moved to the void_printers[] array. Rename this array to printers[]. Remove the uint_printers[] array, now empty. Remove the 'ndo_void_printer' flag field, now useless, from netdissect_options. Remove other transitional code.
2020-08-07 01:12:49 +08:00
typedef void (*if_printer) IF_PRINTER_ARGS;
Move if_printer to structure netdissect_options The structure 'netdissect_options' can hold if_printer. Thus the structure 'print_info' is useless now. Moreover: Delete useless blank lines Fix indent
2015-09-14 21:34:13 +08:00
Introduce a buffer stack, and use it for ESP decryption. If a dissector has to process its input - decryption, decompression, etc. - rather than dissect the raw input, it should push the processed input onto the buffer stack. As soon as the dissection is done, the stack should be popped, to free the buffer into which the processing was done, and restore the "pointer to packet data" and "pointer to end of packet data" members of the netdissect_options structure, so the code can go back to dissecting the original data. The stack will get everything popped off it when dissection is done. Use this mechanism in the ESP decryption code rather than scribbling on top of the input packet data.
2019-03-31 10:26:06 +08:00
/*
* In case the data in a buffer needs to be processed by being decrypted,
* decompressed, etc. before it's dissected, we can't process it in place,
* we have to allocate a new buffer for the processed data.
*
* We keep a stack of those buffers; when we allocate a new buffer, we
* push the current one onto a stack, and when we're done with the new
* buffer, we free the current buffer and pop the previous one off the
* stack.
*
Fix some typos [skip ci]
2022-07-04 17:58:59 +08:00
* A buffer has a beginning and end pointer, and a link to the previous
Introduce a buffer stack, and use it for ESP decryption. If a dissector has to process its input - decryption, decompression, etc. - rather than dissect the raw input, it should push the processed input onto the buffer stack. As soon as the dissection is done, the stack should be popped, to free the buffer into which the processing was done, and restore the "pointer to packet data" and "pointer to end of packet data" members of the netdissect_options structure, so the code can go back to dissecting the original data. The stack will get everything popped off it when dissection is done. Use this mechanism in the ESP decryption code rather than scribbling on top of the input packet data.
2019-03-31 10:26:06 +08:00
* buffer on the stack.
Treat the length field in an Ethernet header as such. If we have an Ethernet packet where the last 2 octets of the header are a length rather than an Ethernet type, and it's less than the remaining length of the packet, shorten the length and captured length, update the snapshot end. Turn the buffer stack into a "packet information" stack, so that, if we *do* update the snapshot end, we push the old end onto the stack, and pop it off as soon as we're done dissecting the Ethernet packet, in case there's more data in the packet after the Ethernet packet. Use the stack when we use the IPv4 and IPv6 length fields as well.
2019-04-23 14:48:45 +08:00
*
* In other cases, we temporarily adjust the snapshot end to reflect a
* packet-length field in the packet data and, when finished dissecting
* that part of the packet, restore the old snapshot end. We keep that
* on the stack with null buffer pointer, meaning there's nothing to
* free.
Introduce a buffer stack, and use it for ESP decryption. If a dissector has to process its input - decryption, decompression, etc. - rather than dissect the raw input, it should push the processed input onto the buffer stack. As soon as the dissection is done, the stack should be popped, to free the buffer into which the processing was done, and restore the "pointer to packet data" and "pointer to end of packet data" members of the netdissect_options structure, so the code can go back to dissecting the original data. The stack will get everything popped off it when dissection is done. Use this mechanism in the ESP decryption code rather than scribbling on top of the input packet data.
2019-03-31 10:26:06 +08:00
*/
Treat the length field in an Ethernet header as such. If we have an Ethernet packet where the last 2 octets of the header are a length rather than an Ethernet type, and it's less than the remaining length of the packet, shorten the length and captured length, update the snapshot end. Turn the buffer stack into a "packet information" stack, so that, if we *do* update the snapshot end, we push the old end onto the stack, and pop it off as soon as we're done dissecting the Ethernet packet, in case there's more data in the packet after the Ethernet packet. Use the stack when we use the IPv4 and IPv6 length fields as well.
2019-04-23 14:48:45 +08:00
struct netdissect_saved_packet_info {
u_char *ndspi_buffer; /* pointer to allocated buffer data */
const u_char *ndspi_packetp; /* saved beginning of data */
const u_char *ndspi_snapend; /* saved end of data */
struct netdissect_saved_packet_info *ndspi_prev; /* previous buffer on the stack */
Introduce a buffer stack, and use it for ESP decryption. If a dissector has to process its input - decryption, decompression, etc. - rather than dissect the raw input, it should push the processed input onto the buffer stack. As soon as the dissection is done, the stack should be popped, to free the buffer into which the processing was done, and restore the "pointer to packet data" and "pointer to end of packet data" members of the netdissect_options structure, so the code can go back to dissecting the original data. The stack will get everything popped off it when dissection is done. Use this mechanism in the ESP decryption code rather than scribbling on top of the input packet data.
2019-03-31 10:26:06 +08:00
};
Move if_printer to structure netdissect_options The structure 'netdissect_options' can hold if_printer. Thus the structure 'print_info' is useless now. Moreover: Delete useless blank lines Fix indent
2015-09-14 21:34:13 +08:00
Use a switch to manage the setjmp() return values Also rename 'ndo_truncated' to 'ndo_early_end'. The current case (truncated packet) uses ND_TRUNCATED value. Prepare to add other cases when the current packet cannot be processed any more ('Invalid' cases, etc.).
2020-09-18 19:17:39 +08:00
/* 'val' value(s) for longjmp */
Have routines that set the snapend take a buffer pointer and length as args. Have nd_push_buffer() take a snapshot length, not a snapshot end, as its last argument. Replace nd_push_snapend() and nd_change_snapend() with nd_push_snaplen() and nd_change_snaplen(), both of which take a pointer into the packet buffer and snapshot length relative to that pointer as arguments. Have those routines check the snapshot length to make sure it's not bigger than the number of bytes in the packet past the pointer, and silently ignore the requst if it is. Using a length rather than a pointer avoids the possibility of the calculation of the snapshot end overflowing and resulting in a snapshot end *before* the point in the buffer. Add a test for this, with a capture file containing an IPv6 packet with an extremely large "jumbo" packet size. Revert the "Make sure we don't set the snapend before the beginning of the packet." changes, as they no longer apply with this change (which also makes sure we don't set the snapend before the beginning of the packet).
2022-03-31 17:29:19 +08:00
#define ND_TRUNCATED 1
Use a switch to manage the setjmp() return values Also rename 'ndo_truncated' to 'ndo_early_end'. The current case (truncated packet) uses ND_TRUNCATED value. Prepare to add other cases when the current packet cannot be processed any more ('Invalid' cases, etc.).
2020-09-18 19:17:39 +08:00
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
struct netdissect_options {
from Anantharamu Suryanarayana: add 4-byte AS support to the BGP printer
2009-01-21 04:40:22 +08:00
int ndo_bflag; /* print 4 byte ASes in ASDOT notation */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
int ndo_eflag; /* print ethernet header */
int ndo_fflag; /* don't translate "foreign" IP address */
Fix a comment
2017-09-21 02:45:37 +08:00
int ndo_Kflag; /* don't check IP, TCP or UDP checksums */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
int ndo_nflag; /* leave addresses as numbers */
int ndo_Nflag; /* remove domains from printed host names */
int ndo_qflag; /* quick (shorter) output */
int ndo_Sflag; /* print raw TCP sequence numbers */
int ndo_tflag; /* print packet arrival time */
int ndo_uflag; /* Print undecoded NFS handles */
Update a comment
2015-09-09 04:37:54 +08:00
int ndo_vflag; /* verbosity level */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
int ndo_xflag; /* print packet in hex */
spell ASCII in uppercase
2017-08-10 16:52:46 +08:00
int ndo_Xflag; /* print packet in hex/ASCII */
int ndo_Aflag; /* print packet only in ASCII observing TAB,
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
* LF, CR and SPACE as graphical chars
*/
Use "-H", not "-h", for the 802.11s option, and improve error reporting. I was rudely surprised to find that "tcpdump -h" wasn't printing a usage message, and I'm the person who *added* the "-h" option. Make it "-H", and add an explicit "-h" option to print a usage message, so nobody else makes the same mistake. Also, don't clear opterr, so that if you give an illegal command-line option, you get an explanatory error message.
2011-06-22 09:15:50 +08:00
int ndo_Hflag; /* dissect 802.11s draft mesh standard */
Add the ndo_protocol field in the netdissect_options structure Update this field in printer entry functions. It will be used for some printings.
2018-03-14 23:54:17 +08:00
const char *ndo_protocol; /* protocol */
Use a switch to manage the setjmp() return values Also rename 'ndo_truncated' to 'ndo_early_end'. The current case (truncated packet) uses ND_TRUNCATED value. Prepare to add other cases when the current packet cannot be processed any more ('Invalid' cases, etc.).
2020-09-18 19:17:39 +08:00
jmp_buf ndo_early_end; /* jmp_buf for setjmp()/longjmp() */
Add a malloc/free process with garbage collector Use it in the PPP printer.
2018-03-14 20:41:33 +08:00
void *ndo_last_mem_p; /* pointer to the last allocated memory chunk */
Print an optional packet number in the beginning of line The new option is '--number'.
2014-05-06 18:07:55 +08:00
int ndo_packet_number; /* print a packet number in the beginning of line */
Add --print-sampling option to print every Nth packet New option `--print-sampling=NTH` will parse and print every NTH packet, with all other packets producing no output. This option enables `--print` and `-S` flags. Print sampling is useful for real-time inspection of an interface with a high packet rate, or initial inspection of large capture files.
2022-01-17 08:05:15 +08:00
int ndo_print_sampling; /* print every Nth packet */
Add a flag to suppress the "default_print()" call made in various link-layer print routines if no other print routine claimed the packet. Test whether that flag is set rather than testing whether neither of -x or -q were specified, and have -x, -q, *and* -X set that flag, so that -X suppresses it just as -x does. That way you don't get those pckets dumped twice if -X was specified.
2005-07-07 09:22:15 +08:00
int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
Add program_name field in the netdissect_options structure A program that use the library should set it. Done for tcpdump. ndo_error() and ndo_warning() print now 'ndo->program_name'. Moreover: Fix indent
2015-09-08 01:04:50 +08:00
int ndo_tstamp_precision; /* requested time stamp precision */
const char *program_name; /* Name of the program using the library */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
char *ndo_espsecret;
print-esp has been "NDO"-ized. replace error() and warning() with ndo-ized version. moved snaplen/snapend to ndo structure.
2004-04-05 08:15:50 +08:00
struct sa_list *ndo_sa_list_head; /* used by print-esp.c */
struct sa_list *ndo_sa_default;
Add program_name field in the netdissect_options structure A program that use the library should set it. Done for tcpdump. ndo_error() and ndo_warning() print now 'ndo->program_name'. Moreover: Fix indent
2015-09-08 01:04:50 +08:00
char *ndo_sigsecret; /* Signature verification secret key */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
int ndo_packettype; /* as specified by -T */
int ndo_snaplen;
Rename a field of the netdissect_options structure
2020-07-14 23:32:55 +08:00
int ndo_ll_hdr_len; /* link-layer header length */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
/*global pointers to beginning and end of current packet (during printing) */
const u_char *ndo_packetp;
const u_char *ndo_snapend;
Treat the length field in an Ethernet header as such. If we have an Ethernet packet where the last 2 octets of the header are a length rather than an Ethernet type, and it's less than the remaining length of the packet, shorten the length and captured length, update the snapshot end. Turn the buffer stack into a "packet information" stack, so that, if we *do* update the snapshot end, we push the old end onto the stack, and pop it off as soon as we're done dissecting the Ethernet packet, in case there's more data in the packet after the Ethernet packet. Use the stack when we use the IPv4 and IPv6 length fields as well.
2019-04-23 14:48:45 +08:00
/* stack of saved packet boundary and buffer information */
struct netdissect_saved_packet_info *ndo_packet_info_stack;
Introduce a buffer stack, and use it for ESP decryption. If a dissector has to process its input - decryption, decompression, etc. - rather than dissect the raw input, it should push the processed input onto the buffer stack. As soon as the dissection is done, the stack should be popped, to free the buffer into which the processing was done, and restore the "pointer to packet data" and "pointer to end of packet data" members of the netdissect_options structure, so the code can go back to dissecting the original data. The stack will get everything popped off it when dissection is done. Use this mechanism in the ESP decryption code rather than scribbling on top of the input packet data.
2019-03-31 10:26:06 +08:00
Apply the last step of the new way to update the link-layer header length All the link-layer dissectors are now void functions. All the functions were moved to the void_printers[] array. Rename this array to printers[]. Remove the uint_printers[] array, now empty. Remove the 'ndo_void_printer' flag field, now useless, from netdissect_options. Remove other transitional code.
2020-08-07 01:12:49 +08:00
/* pointer to the if_printer function */
if_printer ndo_if_printer;
Move if_printer to structure netdissect_options The structure 'netdissect_options' can hold if_printer. Thus the structure 'print_info' is useless now. Moreover: Delete useless blank lines Fix indent
2015-09-14 21:34:13 +08:00
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
/* pointer to void function to output stuff */
void (*ndo_default_print)(netdissect_options *,
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
const u_char *bp, u_int length);
added some comments about ndo functions
2014-07-08 10:05:14 +08:00
/* pointer to function to do regular output */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
int (*ndo_printf)(netdissect_options *,
Add __attribute__((format)) to the declarations of the ndo_printf, ndo_error, and ndo_warning function pointers in a netdissect_options structure. Fix some errors adding that caught. Have the RRCP dissector extract fields itself, with the EXTRACT_ macros and a u_char pointer, rather than printing numbers from a structure which doesn't put structure members on natural boundaries (__attribute__((packed)) doesn't help, as not all compilers support it) - note also that not all processors support dereferencing unaligned pointers, e.g. SPARC - and assuming some fields are in the "right" byte order. Also have it check whether data is available in the packet before referring to it.
2009-05-25 05:06:10 +08:00
const char *fmt, ...)
Handle attributes for function pointers by checking the compiler version. Handle attributes for function pointers the same way we handle attributes for functions, by explicitly checking for the compiler version with #if rather than with a configure script check. That's one fewer thing that, if you're not using autoconf, has to be done in some other fashion. While we're at it, put NORETURN in the right place to have it work with Microsoft Visual Studio as well as various UN*X compilers.
2017-08-20 02:25:24 +08:00
PRINTFLIKE_FUNCPTR(2, 3);
added some comments about ndo functions
2014-07-08 10:05:14 +08:00
/* pointer to function to output errors */
Handle attributes for function pointers by checking the compiler version. Handle attributes for function pointers the same way we handle attributes for functions, by explicitly checking for the compiler version with #if rather than with a configure script check. That's one fewer thing that, if you're not using autoconf, has to be done in some other fashion. While we're at it, put NORETURN in the right place to have it work with Microsoft Visual Studio as well as various UN*X compilers.
2017-08-20 02:25:24 +08:00
void NORETURN_FUNCPTR (*ndo_error)(netdissect_options *,
Add a status exit code to the function ndo_error() The status are defined in an enum in status-exit-codes.h. Moreover: Use ndo_error() instead of ndo_warning() for malloc() errors in print-esp.c.
2018-02-25 18:04:39 +08:00
status_exit_codes_t status,
Handle attributes for function pointers by checking the compiler version. Handle attributes for function pointers the same way we handle attributes for functions, by explicitly checking for the compiler version with #if rather than with a configure script check. That's one fewer thing that, if you're not using autoconf, has to be done in some other fashion. While we're at it, put NORETURN in the right place to have it work with Microsoft Visual Studio as well as various UN*X compilers.
2017-08-20 02:25:24 +08:00
const char *fmt, ...)
Add a status exit code to the function ndo_error() The status are defined in an enum in status-exit-codes.h. Moreover: Use ndo_error() instead of ndo_warning() for malloc() errors in print-esp.c.
2018-02-25 18:04:39 +08:00
PRINTFLIKE_FUNCPTR(3, 4);
added some comments about ndo functions
2014-07-08 10:05:14 +08:00
/* pointer to function to output warnings */
print-esp has been "NDO"-ized. replace error() and warning() with ndo-ized version. moved snaplen/snapend to ndo structure.
2004-04-05 08:15:50 +08:00
void (*ndo_warning)(netdissect_options *,
Add __attribute__((format)) to the declarations of the ndo_printf, ndo_error, and ndo_warning function pointers in a netdissect_options structure. Fix some errors adding that caught. Have the RRCP dissector extract fields itself, with the EXTRACT_ macros and a u_char pointer, rather than printing numbers from a structure which doesn't put structure members on natural boundaries (__attribute__((packed)) doesn't help, as not all compilers support it) - note also that not all processors support dereferencing unaligned pointers, e.g. SPARC - and assuming some fields are in the "right" byte order. Also have it check whether data is available in the packet before referring to it.
2009-05-25 05:06:10 +08:00
const char *fmt, ...)
Handle attributes for function pointers by checking the compiler version. Handle attributes for function pointers the same way we handle attributes for functions, by explicitly checking for the compiler version with #if rather than with a configure script check. That's one fewer thing that, if you're not using autoconf, has to be done in some other fashion. While we're at it, put NORETURN in the right place to have it work with Microsoft Visual Studio as well as various UN*X compilers.
2017-08-20 02:25:24 +08:00
PRINTFLIKE_FUNCPTR(2, 3);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
};
Add some const qualifiers
2022-04-02 19:21:29 +08:00
extern WARN_UNUSED_RESULT int nd_push_buffer(netdissect_options *, u_char *, const u_char *, const u_int);
extern WARN_UNUSED_RESULT int nd_push_snaplen(netdissect_options *, const u_char *, const u_int);
extern void nd_change_snaplen(netdissect_options *, const u_char *, const u_int);
Treat the length field in an Ethernet header as such. If we have an Ethernet packet where the last 2 octets of the header are a length rather than an Ethernet type, and it's less than the remaining length of the packet, shorten the length and captured length, update the snapshot end. Turn the buffer stack into a "packet information" stack, so that, if we *do* update the snapshot end, we push the old end onto the stack, and pop it off as soon as we're done dissecting the Ethernet packet, in case there's more data in the packet after the Ethernet packet. Use the stack when we use the IPv4 and IPv6 length fields as well.
2019-04-23 14:48:45 +08:00
extern void nd_pop_packet_info(netdissect_options *);
extern void nd_pop_all_packet_info(netdissect_options *);
Introduce a buffer stack, and use it for ESP decryption. If a dissector has to process its input - decryption, decompression, etc. - rather than dissect the raw input, it should push the processed input onto the buffer stack. As soon as the dissection is done, the stack should be popped, to free the buffer into which the processing was done, and restore the "pointer to packet data" and "pointer to end of packet data" members of the netdissect_options structure, so the code can go back to dissecting the original data. The stack will get everything popped off it when dissection is done. Use this mechanism in the ESP decryption code rather than scribbling on top of the input packet data.
2019-03-31 10:26:06 +08:00
Move nd_trunc_longjmp() to netdissect.h with the other nd_ functions. It's not particularly tied to the data-extraction functions; this makes it available elsewhere.
2022-03-29 03:44:50 +08:00
static inline NORETURN void
nd_trunc_longjmp(netdissect_options *ndo)
{
longjmp(ndo->ndo_early_end, ND_TRUNCATED);
#ifdef _AIX
/*
* In AIX <setjmp.h> decorates longjmp() with "#pragma leaves", which tells
* XL C that the function is noreturn, but GCC remains unaware of that and
* yields a "'noreturn' function does return" warning.
*/
ND_UNREACHABLE
#endif /* _AIX */
}
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
#define PT_VAT 1 /* Visual Audio Tool */
#define PT_WB 2 /* distributed White Board */
#define PT_RPC 3 /* Remote Procedure Call */
#define PT_RTP 4 /* Real-Time Applications protocol */
#define PT_RTCP 5 /* Real-Time Applications control protocol */
#define PT_SNMP 6 /* Simple Network Management Protocol */
#define PT_CNFP 7 /* Cisco NetFlow protocol */
Add "radius" as an option for -T. This allows tcpdump to handle RADIUS running on non-standard ports. Submitted-By: ssb@sourceforge.net Man page also updated by me.
2012-07-01 06:59:18 +08:00
#define PT_TFTP 8 /* trivial file transfer protocol */
#define PT_AODV 9 /* Ad-hoc On-demand Distance Vector Protocol */
fix some PT_* macros indentation with tabs
2013-02-09 16:08:34 +08:00
#define PT_CARP 10 /* Common Address Redundancy Protocol */
#define PT_RADIUS 11 /* RADIUS authentication Protocol */
ZeroMQ initial support (ZMTP/1.0 framing) This change adds support for ZMTP/1.0 (ZeroMQ Message Transport Protocol 1.0) framing in TCP packets, as defined in http://rfc.zeromq.org/spec:13 and implemented in zeromq library. Since there is no assigned port number for ZeroMQ, the user is left responsible for making only the related TCP packets captured and enforcing ZMTP/1.0 decoding through the "-T zmtp1" option. Each ZMTP/1.0 frame of a packet will produce a single additional line of output. The "-v" flag will add up to 8 lines (128 bytes) worth of hex+ASCII dump of the frame body, and "-vv" and higher will dump the full frame body, however long. Beware that this code handles neither IP fragmentation nor TCP segmentation and will incorrectly decode segments not starting at a frame boundary. The included sample capture stands for a short ZeroMQ session between a REQ/REP socket pair doing 3 anonymous 2-way exchanges. It was produced using version 2.1.9 of zeromq library patched to fix its bug #293, so that all MBZ bits of the flags field are set to 0.
2013-02-09 21:36:24 +08:00
#define PT_ZMTP1 12 /* ZeroMQ Message Transport Protocol 1.0 */
- Add support for OTV (draft-hasmit-otv-04). - Use the packettype infrastructure (-T vxlan) for VXLAN parsing (waiting for a well known dest port)
2013-02-26 20:44:11 +08:00
#define PT_VXLAN 13 /* Virtual eXtensible Local Area Network */
use existing PGM decoder for UDP-encapsulated PGM The original PGM uses its own IP protocol number. "EPGM" or "PGM/UDP" stands for UDP-encapsulated PGM, which has no assigned UDP port number and can be decoded only by means of -T option, which now accepts "pgm" protocol type for this purpose. There is also a sample capture of EPGM now (similar to the one of native PGM, but produced using the "epgm://" protocol schema) and a respective test case.
2013-03-15 01:17:53 +08:00
#define PT_PGM 14 /* [UDP-encapsulated] Pragmatic General Multicast */
improve ZeroMQ support (ZMTP/1.0 inside PGM/EPGM) This change adds new code to decode ZeroMQ datagrams, couples it with the PGM decoder and extends the -T option to make all this work. There are two new test cases based on existing captures of ZMTP/1.0 inside [E]PGM to decode the ZMTP/1.0 part of these. This functionality enables decoding of the traffic zeromq library produces for "pgm://" and "epgm://" protocol schemas.
2013-03-15 01:59:38 +08:00
#define PT_PGM_ZMTP1 15 /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
LMP: add -T override and fix version 1 test(s) The Link Management Protocol version 1 sample capture added to the tests directory in commit 212eef2 was produced using non-standard UDP port 49998. Later assignment of port 701 reflected in commit 960aee5 made it impossible to decode the capture. This change adds a -T override for LMP, uses it to replace the broken test with two working tests and dismisses the custom test script, lmp.sh.
2013-09-07 16:22:37 +08:00
#define PT_LMP 16 /* Link Management Protocol */
Initial support for the REdis Serialization Protocol known as RESP. This commit adds support for RESP as defined in: http://redis.io/topics/protocol. It also supports inline commands and pipelining. Due to the popularity of RESP, numerous services are emerging that use this protocol. You may decode RESP packets on arbitrary ports using the "-T resp" option. Example captures can be found in tests/resp_*. A simple way to test this parser is to start redis-server and then run redis-cli commands such as "redis-cli set key value". Traditionally, redis-cli monitor is used to debug redis. Unfortunately, the "monitor" command can cause significant load on a redis-server in production. This parser may be used as a non-invasive alternative to redis-cli monitor.
2016-01-13 01:32:55 +08:00
#define PT_RESP 17 /* RESP */
The ptp (precision time protocol) with UDP as the transport protocol. - the print routines for ptp different ptp messages - test completed for sync message, announce message, delay request message, delay response message and follow up message. - integration of the ptp v2 code with the tcpdump code. Signed-off-by: Partha S. Ghosh <psglinux@gmail.com>
2018-12-14 14:28:36 +08:00
#define PT_PTP 18 /* PTP */
Autosar SOME/IP protocol support
2020-02-18 23:38:16 +08:00
#define PT_SOMEIP 19 /* Autosar SOME/IP Protocol */
Add "domain" as an option for -T This allows tcpdump to handle DNS running on non-standard ports. Add two test files with DNS over TCP and DNS over UDP, port 8053.
2020-03-02 23:04:35 +08:00
#define PT_DOMAIN 20 /* Domain Name System (DNS) */
Initial support to parse QUIC packets.
2021-10-01 09:34:46 +08:00
#define PT_QUIC 21 /* QUIC */
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Rename min() and max() to ND_MIN() and ND_MAX(). [skip ci] As discussed on tcpdump-workers, it was a place for a potential clash with non-macros.
2020-08-25 04:53:58 +08:00
#define ND_MIN(a,b) ((a)>(b)?(b):(a))
#define ND_MAX(a,b) ((b)>(a)?(b):(a))
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Harmonize TCP source or destination ports tests with UDP ones
2015-12-15 03:28:14 +08:00
/* For source or destination ports tests (UDP, TCP, ...) */
#define IS_SRC_OR_DST_PORT(p) (sport == (p) || dport == (p))
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
/*
Make the default snapshot length the maximum; add a #define for the maximum. Get rid of redundant definition of DEFAULT_SNAPLEN in interface.h. Update the documentation.
2009-03-05 17:01:29 +08:00
* Maximum snapshot length. This should be enough to capture the full
* packet on most network interfaces.
*
Boost the maximum snapshot length to 262144, for USBPcap.
2014-06-26 04:41:22 +08:00
*
* Somewhat arbitrary, but chosen to be:
*
* 1) big enough for maximum-size Linux loopback packets (65549)
* and some USB packets captured with USBPcap:
*
Use more HTTPS in URLs [skip ci]
2019-08-05 21:11:50 +08:00
* https://desowin.org/usbpcap/
Boost the maximum snapshot length to 262144, for USBPcap.
2014-06-26 04:41:22 +08:00
*
* (> 131072, < 262144)
*
* and
*
* 2) small enough not to cause attempts to allocate huge amounts of
* memory; some applications might use the snapshot length in a
* savefile header to control the size of the buffer they allocate,
* so a size of, say, 2^31-1 might not work well.
Don't treat 65535 as the maximum snapshot length. Make it 131072, instead; the MTU on the Linux loopback interface, in at least some versions of the kernel, is 65536, and that doesn't count the fake Ethernet header, so we need a value bigger than 65536. We don't want a value that's *too* large, so that it causes attempts to allocate huge amounts of memory, however. This (plus the corresponding change to libpcap) should fix GitHub issue
2014-06-26 04:18:18 +08:00
*
With no -s, or with -s 0, don't specify the snapshot length with newer versions of libpcap. That leaves it up to libpcap to choose an appropriate snapshot length, which it'll do. With upcoming versions, it'll choose, when capturing on a D-Bus interface, a very large snapshot length, to handle the maximum D-Bus message size of 128MB. (For older versions, we still use 262144, as those versions won't pick a default value.)
2017-06-03 12:50:45 +08:00
* XXX - does it need to be bigger still? Note that, for versions of
* libpcap with pcap_create()/pcap_activate(), if no -s flag is specified
* or -s 0 is specified, we won't set the snapshot length at all, and will
* let libpcap choose a snapshot length; newer versions may choose a bigger
* value than 262144 for D-Bus, for example.
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
*/
Boost the maximum snapshot length to 262144, for USBPcap.
2014-06-26 04:41:22 +08:00
#define MAXIMUM_SNAPLEN 262144
Make the default snapshot length the maximum; add a #define for the maximum. Get rid of redundant definition of DEFAULT_SNAPLEN in interface.h. Update the documentation.
2009-03-05 17:01:29 +08:00
/*
Update a comment
2018-09-22 21:19:44 +08:00
* True if "l" bytes from "p" were captured.
The first argument to "ascii_print_with_offset()", "ascii_print()", "hex_print_with_offset()", and "hex_print()" is a string used as a tag; make it a "const char *", not a "const u_char *". Copy the declaration of "strsep()" from "interface.h" to "netdissect.h", and get rid of the include of "interface.h" from "print-esp.c", as it includes "netdissect.h". Update the "ND_TTEST2()" macro to do the same overflow checks that "TTEST2()" now does.
2004-07-22 06:00:10 +08:00
*
* The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
* "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
*
* The check is for <= rather than < because "l" might be 0.
C compilers can, and some do, optimize away pointer underflow checks. Cast the pointers to uintptr_t; use AC_TYPE_UINTPTR_T to get uintptr_t defined on older platforms that don't define it themselves.
2015-03-03 05:25:12 +08:00
*
* We cast the pointers to uintptr_t to make sure that the compiler
* doesn't optimize away any of these tests (which it is allowed to
* do, as adding an integer to, or subtracting an integer from, a
* pointer assumes that the pointer is a pointer to an element of an
* array and that the result of the addition or subtraction yields a
* pointer to another member of the array, so that, for example, if
* you subtract a positive integer from a pointer, the result is
* guaranteed to be less than the original pointer value). See
*
Use more HTTPS in URLs [skip ci]
2019-08-05 21:11:50 +08:00
* https://www.kb.cert.org/vuls/id/162289
The first argument to "ascii_print_with_offset()", "ascii_print()", "hex_print_with_offset()", and "hex_print()" is a string used as a tag; make it a "const char *", not a "const u_char *". Copy the declaration of "strsep()" from "interface.h" to "netdissect.h", and get rid of the include of "interface.h" from "print-esp.c", as it includes "netdissect.h". Update the "ND_TTEST2()" macro to do the same overflow checks that "TTEST2()" now does.
2004-07-22 06:00:10 +08:00
*/
netdissect.h: Update ND_TTEST2 to fix issue 443 Add IS_NOT_NEGATIVE macro. Avoid these warnings: - comparison of unsigned expression >= 0 is always true [-Wtype-limits], - comparison is always true due to limited range of data type [-Wtype-limits].
2015-04-28 00:20:59 +08:00
netdissect.h: Add a comment on IS_NOT_NEGATIVE macro
2015-04-28 12:17:16 +08:00
/*
* Test in two parts to avoid these warnings:
* comparison of unsigned expression >= 0 is always true [-Wtype-limits],
* comparison is always true due to limited range of data type [-Wtype-limits].
*/
netdissect.h: Update ND_TTEST2 to fix issue 443 Add IS_NOT_NEGATIVE macro. Avoid these warnings: - comparison of unsigned expression >= 0 is always true [-Wtype-limits], - comparison is always true due to limited range of data type [-Wtype-limits].
2015-04-28 00:20:59 +08:00
#define IS_NOT_NEGATIVE(x) (((x) > 0) || ((x) == 0))
Replace ND_TTEST2()/ND_TCHECK2() macros by macros using pointers (1/n) ND_TTEST2(var, l) -> ND_TTEST_LEN(p, l) ND_TCHECK2(var, l) -> ND_TCHECK_LEN(p, l)
2017-12-11 19:46:51 +08:00
#define ND_TTEST_LEN(p, l) \
netdissect.h: Update ND_TTEST2 to fix issue 443 Add IS_NOT_NEGATIVE macro. Avoid these warnings: - comparison of unsigned expression >= 0 is always true [-Wtype-limits], - comparison is always true due to limited range of data type [-Wtype-limits].
2015-04-28 00:20:59 +08:00
(IS_NOT_NEGATIVE(l) && \
C compilers can, and some do, optimize away pointer underflow checks. Cast the pointers to uintptr_t; use AC_TYPE_UINTPTR_T to get uintptr_t defined on older platforms that don't define it themselves.
2015-03-03 05:25:12 +08:00
((uintptr_t)ndo->ndo_snapend - (l) <= (uintptr_t)ndo->ndo_snapend && \
Replace ND_TTEST2()/ND_TCHECK2() macros by macros using pointers (1/n) ND_TTEST2(var, l) -> ND_TTEST_LEN(p, l) ND_TCHECK2(var, l) -> ND_TCHECK_LEN(p, l)
2017-12-11 19:46:51 +08:00
(uintptr_t)(p) <= (uintptr_t)ndo->ndo_snapend - (l)))
Add ND_TTEST_SIZE() and ND_TCHECK_SIZE() macros To replace in next steps: ND_TTEST(var) -> ND_TTEST_SIZE(p) ND_TCHECK(var) -> ND_TCHECK_SIZE(p) Moreover: Add a comment
2018-01-02 22:50:24 +08:00
/* True if "*(p)" was captured */
#define ND_TTEST_SIZE(p) ND_TTEST_LEN(p, sizeof(*(p)))
/* Bail out if "l" bytes from "p" were not captured */
Introduce and use ND_LONGJMP_FROM_TCHECK. Apply this to the 4 the recently converted protocols. HOW TO USE: Define this in a print-*.c file before including netdissect.h to make all its ND_TCHECK*() instances longjmp(). Only do this after verifying that every ND_TCHECK*() in the file is correct and that in every possible case it is safe to call longjmp() without incurring resource leaks or any other problems. If it is not safe or feasible to convert whole file, consider converting one function at a time.
2020-09-28 04:43:16 +08:00
#ifdef ND_LONGJMP_FROM_TCHECK
Rename nd_trunc() to nd_trunc_longjmp().
2020-09-28 04:48:16 +08:00
#define ND_TCHECK_LEN(p, l) if (!ND_TTEST_LEN(p, l)) nd_trunc_longjmp(ndo)
Introduce and use ND_LONGJMP_FROM_TCHECK. Apply this to the 4 the recently converted protocols. HOW TO USE: Define this in a print-*.c file before including netdissect.h to make all its ND_TCHECK*() instances longjmp(). Only do this after verifying that every ND_TCHECK*() in the file is correct and that in every possible case it is safe to call longjmp() without incurring resource leaks or any other problems. If it is not safe or feasible to convert whole file, consider converting one function at a time.
2020-09-28 04:43:16 +08:00
#else
Replace ND_TTEST2()/ND_TCHECK2() macros by macros using pointers (1/n) ND_TTEST2(var, l) -> ND_TTEST_LEN(p, l) ND_TCHECK2(var, l) -> ND_TCHECK_LEN(p, l)
2017-12-11 19:46:51 +08:00
#define ND_TCHECK_LEN(p, l) if (!ND_TTEST_LEN(p, l)) goto trunc
Introduce and use ND_LONGJMP_FROM_TCHECK. Apply this to the 4 the recently converted protocols. HOW TO USE: Define this in a print-*.c file before including netdissect.h to make all its ND_TCHECK*() instances longjmp(). Only do this after verifying that every ND_TCHECK*() in the file is correct and that in every possible case it is safe to call longjmp() without incurring resource leaks or any other problems. If it is not safe or feasible to convert whole file, consider converting one function at a time.
2020-09-28 04:43:16 +08:00
#endif
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Add ND_TTEST_SIZE() and ND_TCHECK_SIZE() macros To replace in next steps: ND_TTEST(var) -> ND_TTEST_SIZE(p) ND_TCHECK(var) -> ND_TCHECK_SIZE(p) Moreover: Add a comment
2018-01-02 22:50:24 +08:00
/* Bail out if "*(p)" was not captured */
#define ND_TCHECK_SIZE(p) ND_TCHECK_LEN(p, sizeof(*(p)))
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Squelch more narrowing warnings. Add an ND_BYTES_BETWEEN() macro that computes how many bytes are present, starting at the second argument and running up to (but not including) the first argument, and returns that as a u_int (cutting it to 32 bits on LP64 and LLP64 platforms). Use that, including using it as a replacement for SMB's PTR_DIFF().
2019-04-19 02:01:55 +08:00
/*
* Number of bytes between two pointers.
*/
#define ND_BYTES_BETWEEN(p1, p2) ((u_int)(((const uint8_t *)(p1)) - (const uint8_t *)(p2)))
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Fix some narrowing warnings on LP64/LLP64 platforms. Add a ND_BYTES_AVAILABLE_AFTER() macro to find the number of bytes available in the captured data, starting at the byte pointed to by the argument. It returns a u_int rather than a ptrdiff_t, so it'll be 32 bits on LP64 and LLP64 platforms as well as on ILP32 platforms. Use that macro. Make size-of-buffer arguments size_t. Cast some size_t and ptrdiff_t values to u_int or int.
2019-04-19 01:13:49 +08:00
/*
* Number of bytes remaining in the captured data, starting at the
* byte pointed to by the argument.
*/
Squelch more narrowing warnings. Add an ND_BYTES_BETWEEN() macro that computes how many bytes are present, starting at the second argument and running up to (but not including) the first argument, and returns that as a u_int (cutting it to 32 bits on LP64 and LLP64 platforms). Use that, including using it as a replacement for SMB's PTR_DIFF().
2019-04-19 02:01:55 +08:00
#define ND_BYTES_AVAILABLE_AFTER(p) ND_BYTES_BETWEEN(ndo->ndo_snapend, (p))
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Update the ND_LCHECK*() macros to ND_ICHECK*() macros ICHECK like Invalid-Check. Reminder: If the checked expression is true an error message is printed and a 'goto invalid' is executed. This change adds the parameter 'operator'. Before this change, '<' comparison was hard coded. We can do now: ND_ICHECK_U(length, <, HEADER_LEN); ND_ICHECK_U(length, ==, 24); ND_ICHECK_U(length, !=, 8); ND_ICHECK_ZU(length, <, sizeof(struct my_struct)); ND_ICHECKMSG_U("message length", msg_tlen, <, 4); ... (Any comparison operator) Remark: The change of names from ND_LCHECK*() to ND_ICHECK*() is because something else than a length(L) can be checked. Moreover: Place the 'message' parameter at the beginning of ND_ICHECKMSG_U() and ND_ICHECKMSG_ZU() paramaters lists.
2021-12-29 21:38:08 +08:00
/*
* Check (expression_1 operator expression_2) for invalid packet with
* a custom message, format %u
*/
#define ND_ICHECKMSG_U(message, expression_1, operator, expression_2) \
if ((expression_1) operator (expression_2)) { \
ND_PRINT(" [%s %u %s %u]", (message), (expression_1), (#operator), (expression_2)); \
Add ND_LCHECKMSG_U, ND_LCHECK_U, ND_LCHECKMSG_ZU and ND_LCHECK_ZU macros They check length < minimum for invalid packet with or without a custom message, format %u or %zu. %zu (ND_LCHECKMSG_ZU and ND_LCHECK_ZU) is useful when minimum is a sizeof(...). [skip ci]
2021-01-16 21:27:21 +08:00
goto invalid; \
}
Update the ND_LCHECK*() macros to ND_ICHECK*() macros ICHECK like Invalid-Check. Reminder: If the checked expression is true an error message is printed and a 'goto invalid' is executed. This change adds the parameter 'operator'. Before this change, '<' comparison was hard coded. We can do now: ND_ICHECK_U(length, <, HEADER_LEN); ND_ICHECK_U(length, ==, 24); ND_ICHECK_U(length, !=, 8); ND_ICHECK_ZU(length, <, sizeof(struct my_struct)); ND_ICHECKMSG_U("message length", msg_tlen, <, 4); ... (Any comparison operator) Remark: The change of names from ND_LCHECK*() to ND_ICHECK*() is because something else than a length(L) can be checked. Moreover: Place the 'message' parameter at the beginning of ND_ICHECKMSG_U() and ND_ICHECKMSG_ZU() paramaters lists.
2021-12-29 21:38:08 +08:00
/*
* Check (expression_1 operator expression_2) for invalid packet with
* "expression_1" message, format %u
*/
#define ND_ICHECK_U(expression_1, operator, expression_2) \
ND_ICHECKMSG_U((#expression_1), (expression_1), operator, (expression_2))
Add ND_LCHECKMSG_U, ND_LCHECK_U, ND_LCHECKMSG_ZU and ND_LCHECK_ZU macros They check length < minimum for invalid packet with or without a custom message, format %u or %zu. %zu (ND_LCHECKMSG_ZU and ND_LCHECK_ZU) is useful when minimum is a sizeof(...). [skip ci]
2021-01-16 21:27:21 +08:00
Update the ND_LCHECK*() macros to ND_ICHECK*() macros ICHECK like Invalid-Check. Reminder: If the checked expression is true an error message is printed and a 'goto invalid' is executed. This change adds the parameter 'operator'. Before this change, '<' comparison was hard coded. We can do now: ND_ICHECK_U(length, <, HEADER_LEN); ND_ICHECK_U(length, ==, 24); ND_ICHECK_U(length, !=, 8); ND_ICHECK_ZU(length, <, sizeof(struct my_struct)); ND_ICHECKMSG_U("message length", msg_tlen, <, 4); ... (Any comparison operator) Remark: The change of names from ND_LCHECK*() to ND_ICHECK*() is because something else than a length(L) can be checked. Moreover: Place the 'message' parameter at the beginning of ND_ICHECKMSG_U() and ND_ICHECKMSG_ZU() paramaters lists.
2021-12-29 21:38:08 +08:00
/*
* Check (expression_1 operator expression_2) for invalid packet with
* a custom message, format %zu
*/
#define ND_ICHECKMSG_ZU(message, expression_1, operator, expression_2) \
if ((expression_1) operator (expression_2)) { \
ND_PRINT(" [%s %u %s %zu]", (message), (expression_1), (#operator), (expression_2)); \
Add ND_LCHECKMSG_U, ND_LCHECK_U, ND_LCHECKMSG_ZU and ND_LCHECK_ZU macros They check length < minimum for invalid packet with or without a custom message, format %u or %zu. %zu (ND_LCHECKMSG_ZU and ND_LCHECK_ZU) is useful when minimum is a sizeof(...). [skip ci]
2021-01-16 21:27:21 +08:00
goto invalid; \
}
Update the ND_LCHECK*() macros to ND_ICHECK*() macros ICHECK like Invalid-Check. Reminder: If the checked expression is true an error message is printed and a 'goto invalid' is executed. This change adds the parameter 'operator'. Before this change, '<' comparison was hard coded. We can do now: ND_ICHECK_U(length, <, HEADER_LEN); ND_ICHECK_U(length, ==, 24); ND_ICHECK_U(length, !=, 8); ND_ICHECK_ZU(length, <, sizeof(struct my_struct)); ND_ICHECKMSG_U("message length", msg_tlen, <, 4); ... (Any comparison operator) Remark: The change of names from ND_LCHECK*() to ND_ICHECK*() is because something else than a length(L) can be checked. Moreover: Place the 'message' parameter at the beginning of ND_ICHECKMSG_U() and ND_ICHECKMSG_ZU() paramaters lists.
2021-12-29 21:38:08 +08:00
/*
* Check (expression_1 operator expression_2) for invalid packet with
* "expression_1" message, format %zu
*/
#define ND_ICHECK_ZU(expression_1, operator, expression_2) \
ND_ICHECKMSG_ZU((#expression_1), (expression_1), operator, (expression_2))
Add ND_LCHECKMSG_U, ND_LCHECK_U, ND_LCHECKMSG_ZU and ND_LCHECK_ZU macros They check length < minimum for invalid packet with or without a custom message, format %u or %zu. %zu (ND_LCHECKMSG_ZU and ND_LCHECK_ZU) is useful when minimum is a sizeof(...). [skip ci]
2021-01-16 21:27:21 +08:00
Update ND_PRINT() as a variadic macro
2018-01-07 18:47:30 +08:00
#define ND_PRINT(...) (ndo->ndo_printf)(ndo, __VA_ARGS__)
NDO-ized print-arp.c
2004-05-01 00:42:14 +08:00
#define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
NDOize some generic code
2014-04-03 21:40:30 +08:00
extern void ts_print(netdissect_options *, const struct timeval *);
CVE-2016-7993/Clean up relative time stamp printing. Have separate routines for signed and unsigned relative time stamps. Have the routine for signed time stamps handle the case of -2^31, where you can't negate it and have the result fit in a 32-bit signed integer. There are currently no users of the signed relative time stamp routine, but it's there in case anybody needs it (and is passing 32-bit quantitites, so that there's a risk that a packet might contain -2^31 as the time stamp). Fixes an array overflow found with American Fuzzy Lop by Hanno Böck.
2015-08-09 03:53:36 +08:00
extern void signed_relts_print(netdissect_options *, int32_t);
extern void unsigned_relts_print(netdissect_options *, uint32_t);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
CDP: Filter out non-printable characters Add a fn_print_char() to do filtering.
2015-11-09 22:59:58 +08:00
extern void fn_print_char(netdissect_options *, u_char);
Add the fn_print_str() function This function print a null-terminated string, filtering out non-printable characters. DON'T USE IT with a pointer on the packet buffer because there is no truncation check. For this use, see the nd_printX() functions.
2018-05-19 04:18:46 +08:00
extern void fn_print_str(netdissect_options *, const u_char *);
Remove parameters names in functions declarations As in most similar cases.
2019-03-31 20:36:49 +08:00
extern u_int nd_printztn(netdissect_options *, const u_char *, u_int, const u_char *);
Rename the fn_printX() functions to nd_printX() The functions are: nd_print, nd_printztn, nd_printn and nd_printzp. Trying to make it clearer that they currently have to be used only on part of the packet buffer. Update some comments.
2018-04-30 18:52:10 +08:00
extern int nd_printn(netdissect_options *, const u_char *, u_int, const u_char *);
Add a nd_printjn() function It prints a counted filename (or other ASCII string), part of the packet buffer, filtering out non-printable characters. Stop if truncated (via GET_U_1/longjmp) or after n bytes, whichever is first. The suffix comes from: j:longJmp, n:after N bytes.
2021-01-08 23:09:41 +08:00
extern void nd_printjn(netdissect_options *, const u_char *, u_int);
Add a nd_printjnp() function It prints a null-padded filename (or other ASCII string), part of the packet buffer, filtering out non-printable characters. Stop if truncated (via GET_U_1/longjmp) or after n bytes or before the null char, whichever occurs first. The suffix comes from: j:longJmp, n:after N bytes, p:null-Padded.
2020-11-01 19:43:37 +08:00
extern void nd_printjnp(netdissect_options *, const u_char *, u_int);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
More comments.
2014-10-20 04:46:22 +08:00
/*
* Flags for txtproto_print().
*/
#define RESP_CODE_SECOND_TOKEN 0x00000001 /* response code is second token in response line */
Add a routine to print "text protocols", and add FTP/HTTP/SMTP/RTSP support. "Text protocols" are protocols that have the general feel of FTP, with command lines with a command name and space-separated arguments and response lines beginning with a 3-digit reply code. They can also include HTTP-style headers and an entity body. We add support for the FTP control channel, HTTP, SMTP, and RTSP. We also change the SIP printer to use it.
2014-10-20 02:21:44 +08:00
extern void txtproto_print(netdissect_options *, const u_char *, u_int,
Use the ndo->ndo_protocol field instead of the protoname parameter Moreover: Fix a truncated string: "[!" is not the prefix for a truncated string. Add two comments. Clean up a whitespace.
2019-03-08 05:20:34 +08:00
const char **, u_int);
Add a routine to print "text protocols", and add FTP/HTTP/SMTP/RTSP support. "Text protocols" are protocols that have the general feel of FTP, with command lines with a command name and space-separated arguments and response lines beginning with a 3-digit reply code. They can also include HTTP-style headers and an entity body. We add support for the FTP control channel, HTTP, SMTP, and RTSP. We also change the SIP printer to use it.
2014-10-20 02:21:44 +08:00
Check for unaligned memory access support at compile time. Don't test at configure time; that doesn't work when cross-compiling and may be a pain to do with CMake.
2017-10-16 16:39:10 +08:00
#if (defined(__i386__) || defined(_M_IX86) || defined(__X86__) || defined(__x86_64__) || defined(_M_X64)) || \
(defined(__arm__) || defined(_M_ARM) || defined(__aarch64__)) || \
(defined(__m68k__) && (!defined(__mc68000__) && !defined(__mc68010__))) || \
(defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || defined(_ARCH_PPC64)) || \
(defined(__s390__) || defined(__s390x__) || defined(__zarch__)) || \
defined(__vax__)
Do our own isascii(), isprint(), isgraph(), and toascii(). We do *not* want the behavior of isprint() and isgraph() to be locale-dependent - we want both of them to return "true" only for ASCII characters. We have to do our own isascii() and toascii() on non-UN*X systems anyway, so let's just do all of them ourselves.
2014-02-03 07:17:06 +08:00
/*
Fix some typos [skip ci]
2022-07-04 17:58:59 +08:00
* The processor natively handles unaligned loads, so just use memcpy()
Check for unaligned memory access support at compile time. Don't test at configure time; that doesn't work when cross-compiling and may be a pain to do with CMake.
2017-10-16 16:39:10 +08:00
* and memcmp(), to enable those optimizations.
*
* XXX - are those all the x86 tests we need?
* XXX - do we need to worry about ARMv1 through ARMv5, which didn't
* support unaligned loads, and, if so, do we need to worry about all
* of them, or just some of them, e.g. ARMv5?
* XXX - are those the only 68k tests we need not to generated
* unaligned accesses if the target is the 68000 or 68010?
* XXX - are there any tests we don't need, because some definitions are for
* compilers that also predefine the GCC symbols?
* XXX - do we need to test for both 32-bit and 64-bit versions of those
* architectures in all cases?
Do our own isascii(), isprint(), isgraph(), and toascii(). We do *not* want the behavior of isprint() and isgraph() to be locale-dependent - we want both of them to return "true" only for ASCII characters. We have to do our own isascii() and toascii() on non-UN*X systems anyway, so let's just do all of them ourselves.
2014-02-03 07:17:06 +08:00
*/
Check for unaligned memory access support at compile time. Don't test at configure time; that doesn't work when cross-compiling and may be a pain to do with CMake.
2017-10-16 16:39:10 +08:00
#define UNALIGNED_MEMCPY(p, q, l) memcpy((p), (q), (l))
#define UNALIGNED_MEMCMP(p, q, l) memcmp((p), (q), (l))
#else
Only do the unaligned_mem{cpy,cmp} hack if necessary. If the processor does unaligned accesses, it's not necessary.
2014-01-18 09:51:04 +08:00
/*
* The processor doesn't natively handle unaligned loads,
* and the compiler might "helpfully" optimize memcpy()
* and memcmp(), when handed pointers that would normally
* be properly aligned, into sequences that assume proper
* alignment.
*
* Do copies and compares of possibly-unaligned data by
* calling routines that wrap memcpy() and memcmp(), to
* prevent that optimization.
*/
Move safememcpy() to util.c so it doesn't get inlined. It appears that some C compilers will inline safememcpy() *and* will, as a result, optimize to assume alignment it if it's passed a putatively-aligned pointer. As the pointers in question are not guaranteed to be aligned, that can cause crashes on, for example, SPARC. Also, rename the function to unaligned_memcpy(), to clarify what's "safe" about it, and change some direct memcpy() calls to use it as well.
2014-01-16 10:12:06 +08:00
extern void unaligned_memcpy(void *, const void *, size_t);
memcmp() doesn't modify either of its arguments.
2014-01-16 15:03:31 +08:00
extern int unaligned_memcmp(const void *, const void *, size_t);
Only do the unaligned_mem{cpy,cmp} hack if necessary. If the processor does unaligned accesses, it's not necessary.
2014-01-18 09:51:04 +08:00
#define UNALIGNED_MEMCPY(p, q, l) unaligned_memcpy((p), (q), (l))
#define UNALIGNED_MEMCMP(p, q, l) unaligned_memcmp((p), (q), (l))
#endif
Move safememcpy() to util.c so it doesn't get inlined. It appears that some C compilers will inline safememcpy() *and* will, as a result, optimize to assume alignment it if it's passed a putatively-aligned pointer. As the pointers in question are not guaranteed to be aligned, that can cause crashes on, for example, SPARC. Also, rename the function to unaligned_memcpy(), to clarify what's "safe" about it, and change some direct memcpy() calls to use it as well.
2014-01-16 10:12:06 +08:00
Fix plurals in packet count messages. Based on a patch from cr4ckn@sourceforge.net, but with a macro PLURAL_SUFFIX() defined to return either "s" or "" (rather than possibly printing a NUL character with %c), and with that macro used in a couple of cases where the equivalent had been done by hand, and with one case the patch missed fixed as well.
2011-03-09 01:11:25 +08:00
#define PLURAL_SUFFIX(n) \
(((n) != 1) ? "s" : "")
Move more prototypes in netdissect.h
2015-06-11 03:12:38 +08:00
extern const char *tok2strary_internal(const char **, int, const char *, int);
#define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
Wrap some common code up as uint2tokary(). I like the ternary operator (in programming languages that define it with the same associativity as humans tend to presume), but sometimes a lookup function is better.
2020-10-01 04:45:25 +08:00
struct uint_tokary
{
u_int uintval;
const struct tok *tokary;
};
extern const struct tok *uint2tokary_internal(const struct uint_tokary[], const size_t, const u_int);
#define uint2tokary(a, i) uint2tokary_internal(a, sizeof(a)/sizeof(a[0]), i)
Apply the last step of the new way to update the link-layer header length All the link-layer dissectors are now void functions. All the functions were moved to the void_printers[] array. Rename this array to printers[]. Remove the uint_printers[] array, now empty. Remove the 'ndo_void_printer' flag field, now useless, from netdissect_options. Remove other transitional code.
2020-08-07 01:12:49 +08:00
extern if_printer lookup_printer(int);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Use __func__ from C99 in the debug macro ND_DEBUG
2020-11-01 06:40:09 +08:00
#define ND_DEBUG {printf(" [%s:%d %s] ", __FILE__, __LINE__, __func__); fflush(stdout);}
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
/* The DLT printer routines */
Apple IPoIEEE1394: Update the link-layer dissector to a void function
2020-02-03 03:42:52 +08:00
extern void ap1394_if_print IF_PRINTER_ARGS;
ARCNET: Update the link-layer dissectors to void functions
2020-03-29 03:56:02 +08:00
extern void arcnet_if_print IF_PRINTER_ARGS;
extern void arcnet_linux_if_print IF_PRINTER_ARGS;
ATM: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-02 19:58:24 +08:00
extern void atm_if_print IF_PRINTER_ARGS;
Update more link-layer dissectors to void functions brcm_tag_if_print() brcm_tag_prepend_if_print() dsa_if_print() edsa_if_print() ether_if_print() netanalyzer_if_print() netanalyzer_transparent_if_print() Update ether_print(), ether_common_print() and ether_switch_tag_print() to void functions. Add a flag parameter to ether_print(), ether_common_print() and ether_switch_tag_print() to increment the link-layer header length field of the netdissect_options when needed. The calls use TRUE when the return value of the funtions was used. The calls with FALSE avoid increments when the calls are nested. Moreover: Remove trailing "_if" from some protocol names.
2020-07-13 04:27:33 +08:00
extern void brcm_tag_if_print IF_PRINTER_ARGS;
extern void brcm_tag_prepend_if_print IF_PRINTER_ARGS;
Keep the link-layer dissectors names sorted
2021-12-16 01:10:01 +08:00
extern void bt_if_print IF_PRINTER_ARGS;
CHDLC: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-06 22:08:23 +08:00
extern void chdlc_if_print IF_PRINTER_ARGS;
CIP: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-02 17:50:35 +08:00
extern void cip_if_print IF_PRINTER_ARGS;
Update more link-layer dissectors to void functions brcm_tag_if_print() brcm_tag_prepend_if_print() dsa_if_print() edsa_if_print() ether_if_print() netanalyzer_if_print() netanalyzer_transparent_if_print() Update ether_print(), ether_common_print() and ether_switch_tag_print() to void functions. Add a flag parameter to ether_print(), ether_common_print() and ether_switch_tag_print() to increment the link-layer header length field of the netdissect_options when needed. The calls use TRUE when the return value of the funtions was used. The calls with FALSE avoid increments when the calls are nested. Moreover: Remove trailing "_if" from some protocol names.
2020-07-13 04:27:33 +08:00
extern void dsa_if_print IF_PRINTER_ARGS;
extern void edsa_if_print IF_PRINTER_ARGS;
ENC: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name. Remove a no longer used 'out' label.
2020-02-08 03:31:51 +08:00
extern void enc_if_print IF_PRINTER_ARGS;
Update more link-layer dissectors to void functions brcm_tag_if_print() brcm_tag_prepend_if_print() dsa_if_print() edsa_if_print() ether_if_print() netanalyzer_if_print() netanalyzer_transparent_if_print() Update ether_print(), ether_common_print() and ether_switch_tag_print() to void functions. Add a flag parameter to ether_print(), ether_common_print() and ether_switch_tag_print() to increment the link-layer header length field of the netdissect_options when needed. The calls use TRUE when the return value of the funtions was used. The calls with FALSE avoid increments when the calls are nested. Moreover: Remove trailing "_if" from some protocol names.
2020-07-13 04:27:33 +08:00
extern void ether_if_print IF_PRINTER_ARGS;
FDDI: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-02 18:03:19 +08:00
extern void fddi_if_print IF_PRINTER_ARGS;
FR: Update the link-layer dissectors to void functions Moreover: Remove trailing "_if" from the protocol name. Add two comments.
2020-08-04 23:24:53 +08:00
extern void fr_if_print IF_PRINTER_ARGS;
IEEE 802.11: Update the link-layer dissectors to void functions
2020-08-02 15:46:30 +08:00
extern void ieee802_11_if_print IF_PRINTER_ARGS;
extern void ieee802_11_radio_avs_if_print IF_PRINTER_ARGS;
extern void ieee802_11_radio_if_print IF_PRINTER_ARGS;
IEEE 802.15.4: Update the link-layer dissectors to void functions
2020-08-02 17:24:45 +08:00
extern void ieee802_15_4_if_print IF_PRINTER_ARGS;
extern void ieee802_15_4_tap_if_print IF_PRINTER_ARGS;
IPFC: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-02 19:46:55 +08:00
extern void ipfc_if_print IF_PRINTER_ARGS;
IPNET: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name. Remove a useless ND_TCHECK_1 test (GET_U_1 is used). Remove a no longer used 'trunc' label.
2020-02-08 17:42:36 +08:00
extern void ipnet_if_print IF_PRINTER_ARGS;
Keep the link-layer dissectors names sorted
2021-12-16 01:10:01 +08:00
extern void ipoib_if_print IF_PRINTER_ARGS;
Juniper: Update the link-layer dissectors to void functions
2020-07-28 01:20:02 +08:00
extern void juniper_atm1_if_print IF_PRINTER_ARGS;
extern void juniper_atm2_if_print IF_PRINTER_ARGS;
extern void juniper_chdlc_if_print IF_PRINTER_ARGS;
extern void juniper_es_if_print IF_PRINTER_ARGS;
extern void juniper_ether_if_print IF_PRINTER_ARGS;
extern void juniper_frelay_if_print IF_PRINTER_ARGS;
extern void juniper_ggsn_if_print IF_PRINTER_ARGS;
extern void juniper_mfr_if_print IF_PRINTER_ARGS;
extern void juniper_mlfr_if_print IF_PRINTER_ARGS;
extern void juniper_mlppp_if_print IF_PRINTER_ARGS;
extern void juniper_monitor_if_print IF_PRINTER_ARGS;
extern void juniper_ppp_if_print IF_PRINTER_ARGS;
extern void juniper_pppoe_atm_if_print IF_PRINTER_ARGS;
extern void juniper_pppoe_if_print IF_PRINTER_ARGS;
extern void juniper_services_if_print IF_PRINTER_ARGS;
AppleTalk: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-06 22:23:30 +08:00
extern void ltalk_if_print IF_PRINTER_ARGS;
FR: Update the link-layer dissectors to void functions Moreover: Remove trailing "_if" from the protocol name. Add two comments.
2020-08-04 23:24:53 +08:00
extern void mfr_if_print IF_PRINTER_ARGS;
Update more link-layer dissectors to void functions brcm_tag_if_print() brcm_tag_prepend_if_print() dsa_if_print() edsa_if_print() ether_if_print() netanalyzer_if_print() netanalyzer_transparent_if_print() Update ether_print(), ether_common_print() and ether_switch_tag_print() to void functions. Add a flag parameter to ether_print(), ether_common_print() and ether_switch_tag_print() to increment the link-layer header length field of the netdissect_options when needed. The calls use TRUE when the return value of the funtions was used. The calls with FALSE avoid increments when the calls are nested. Moreover: Remove trailing "_if" from some protocol names.
2020-07-13 04:27:33 +08:00
extern void netanalyzer_if_print IF_PRINTER_ARGS;
extern void netanalyzer_transparent_if_print IF_PRINTER_ARGS;
NFLOG: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name.
2020-05-04 22:14:14 +08:00
extern void nflog_if_print IF_PRINTER_ARGS;
NULL/LOOP: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name. Remove a useless ND_TCHECK_4 test (GET_HE_U_4 used). Remove a no longer used 'trunc' label. Use uint32_t type for family in null_hdr_print().
2020-02-08 01:21:40 +08:00
extern void null_if_print IF_PRINTER_ARGS;
PFLOG: Update the link-layer dissector to a void function Moreover: Use GET_U_1() when needed. Remove trailing "_if" from the protocol name.
2020-08-06 23:22:34 +08:00
extern void pflog_if_print IF_PRINTER_ARGS;
PKTAP: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name. Update the output of a test accordingly.
2020-03-28 17:40:28 +08:00
extern void pktap_if_print IF_PRINTER_ARGS;
PPI: Update the link-layer dissector to a void function Moreover: Merge ppi_if_print() and ppi_print() in one function. Remove two useless ND_TCHECK_ tests (GET_ used). Remove a no longer used 'trunc' label.
2020-03-28 15:38:04 +08:00
extern void ppi_if_print IF_PRINTER_ARGS;
PPP: Update the link-layer dissectors to void functions Moreover: Remove trailing "_if" from some protocol names. Update the outputs of two tests accordingly.
2020-08-06 17:22:56 +08:00
extern void ppp_bsdos_if_print IF_PRINTER_ARGS;
extern void ppp_hdlc_if_print IF_PRINTER_ARGS;
extern void ppp_if_print IF_PRINTER_ARGS;
PPPoE: Update the link-layer dissector to a void function Moreover: Add a length check. Fix a return. Use nd_print_trunc(). Remove trailing "_if" from the protocol name. Style.
2020-08-01 02:36:17 +08:00
extern void pppoe_if_print IF_PRINTER_ARGS;
IEEE 802.11: Update the link-layer dissectors to void functions
2020-08-02 15:46:30 +08:00
extern void prism_if_print IF_PRINTER_ARGS;
Raw IP: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name.
2020-02-08 01:05:05 +08:00
extern void raw_if_print IF_PRINTER_ARGS;
SLIP: Update the link-layer dissectors to void functions Moreover: Update the protocol names (sl_if -> slip and sl_bsdos_if -> slip_bsdos). Update the output of some tests accordingly.
2020-04-30 00:54:31 +08:00
extern void sl_bsdos_if_print IF_PRINTER_ARGS;
extern void sl_if_print IF_PRINTER_ARGS;
SLL: Update the link-layer dissectors to void functions Moreover: Fix two probably copy & paste errors (s/SLL_HDR_LEN/SLL2_HDR_LEN/). Remove trailing "_if" from the protocol name.
2020-08-02 18:51:01 +08:00
extern void sll2_if_print IF_PRINTER_ARGS;
Keep the link-layer dissectors names sorted
2021-12-16 01:10:01 +08:00
extern void sll_if_print IF_PRINTER_ARGS;
SunATM DLPI: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name.
2020-02-08 00:51:01 +08:00
extern void sunatm_if_print IF_PRINTER_ARGS;
Symantec: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol name.
2020-02-07 21:40:39 +08:00
extern void symantec_if_print IF_PRINTER_ARGS;
Token Ring: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from the protocol name.
2020-08-02 19:36:10 +08:00
extern void token_if_print IF_PRINTER_ARGS;
Print packets for unsupported link-layer protocols in hexadecimal/ASCII This avoids to get only: tcpdump: packet printing is not supported for link type XYZ: use -w The default printing is like: 18:45:52.723872 UNSUPPORTED 0x0000: 001f 0000 0540 6078 725d 586d 4d66 4671 .....@`xr]XmMfFq 0x0010: 6d58 4d5c 7159 5f71 565c 556c 4e71 7171 mXM\qY_qV\UlNqqq 0x0020: 7171 7171 7171 7171 7171 7171 7171 5180 qqqqqqqqqqqqqqQ. 0x0030: 7f7f .. 18:45:52.755995 UNSUPPORTED 0x0000: 001f 0000 0540 6043 7851 807f 7f .....@`CxQ... [...]
2020-05-10 01:32:05 +08:00
extern void unsupported_if_print IF_PRINTER_ARGS;
USB: Update the link-layer dissector to a void function Moreover: Remove trailing "_if" from protocol names.
2020-02-07 22:39:55 +08:00
extern void usb_linux_48_byte_if_print IF_PRINTER_ARGS;
extern void usb_linux_64_byte_if_print IF_PRINTER_ARGS;
vsock: Update the link-layer dissector to a void function Moreover: Rename some variables/parameters from 'len' to 'caplen' because they store the capture length.
2020-07-27 03:19:37 +08:00
extern void vsock_if_print IF_PRINTER_ARGS;
reworked print-ether to use netdissect
2010-10-08 02:36:49 +08:00
CVE-2016-7985,7986/Change the way protocols print link-layer addresses. If a protocol that runs under a link-layer protocol would print the link-layer addresses for the packet as source and destination addresses for the packet, don't have it blithely assume those link-layer addresses are present or are at a particular offset from the beginning of that protocol's data; Ethertypes, for example, are used by a number of protocols, not all of which have Ethernet headers and not all of which have any MAC headers. Instead, pass the printers for those protocols structures with a pointer to the address data and a pointer to a routine that prints the address. Fixes some heap overflows found with American Fuzzy Lop by Hanno Böck.
2015-07-04 06:54:14 +08:00
/*
* Structure passed to some printers to allow them to print
* link-layer address information if ndo_eflag isn't set
* (because they are for protocols that don't have their
* own addresses, so that we'd want to report link-layer
* address information).
*
* This contains a pointer to an address and a pointer to a routine
* to which we pass that pointer in order to get a string.
*/
struct lladdr_info {
const char *(*addr_string)(netdissect_options *, const u_char *);
const u_char *addr;
};
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
/* The printer routines. */
NDOize print-ascii.c further Introduce netdissect_options into hex_and_ascii_print_with_offset(), hex_and_ascii_print() and related functions.
2014-03-13 15:06:15 +08:00
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void aarp_print(netdissect_options *, const u_char *, u_int);
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
extern int ah_print(netdissect_options *, const u_char *);
AHCP: Modernize packet parsing style. Similarly to earlier commits, follow up from commit 19b51ded and make changes along the same lines. Also make all functions void, lose a few excess ND_TCHECK_LEN() instances, update comments, reduce scope for a couple variables, rearrange some line breaks and call ND_TCHECK_LEN() for unknown protocol versions.
2020-09-19 07:50:40 +08:00
extern void ahcp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void aodv_print(netdissect_options *, const u_char *, u_int, int);
extern void aoe_print(netdissect_options *, const u_char *, const u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern int arista_ethertype_print(netdissect_options *,const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void arp_print(netdissect_options *, const u_char *, u_int, u_int);
extern void ascii_print(netdissect_options *, const u_char *, u_int);
extern void atalk_print(netdissect_options *, const u_char *, u_int);
extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int);
extern void babel_print(netdissect_options *, const u_char *, u_int);
add support for Broadcom LI header (pull request #843) fix build break for Broadcom LI printer on BSD platforms incorporate review comments: make bcm_li_print() void, add a sample capture incorporate review comments: remove trailing tabs add BCM LI outputs to testset incorporate review comment: return after printing update verbose output for bcm-li
2020-04-01 20:40:50 +08:00
extern void bcm_li_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void beep_print(netdissect_options *, const u_char *, u_int);
NDOize ARCNET, BFD and GRE decoders
2014-03-11 20:08:24 +08:00
extern void bfd_print(netdissect_options *, const u_char *, u_int, u_int);
More cleanups. Add the current BGP RFC as a comment. Use unsigned types where appropriate. Use size_t where appropriate. Further whitespace cleanups.
2017-12-17 02:50:00 +08:00
extern void bgp_print(netdissect_options *, const u_char *, u_int);
Add some const qualifiers
2018-03-16 17:39:25 +08:00
extern const char *bgp_vpn_rd_print(netdissect_options *, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void bootp_print(netdissect_options *, const u_char *, u_int);
CVE-2016-7985,7986/Change the way protocols print link-layer addresses. If a protocol that runs under a link-layer protocol would print the link-layer addresses for the packet as source and destination addresses for the packet, don't have it blithely assume those link-layer addresses are present or are at a particular offset from the beginning of that protocol's data; Ethertypes, for example, are used by a number of protocols, not all of which have Ethernet headers and not all of which have any MAC headers. Instead, pass the printers for those protocols structures with a pointer to the address data and a pointer to a routine that prints the address. Fixes some heap overflows found with American Fuzzy Lop by Hanno Böck.
2015-07-04 06:54:14 +08:00
extern void calm_fast_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
Clean up signed vs. unsigned.
2018-01-12 03:52:30 +08:00
extern void carp_print(netdissect_options *, const u_char *, u_int, u_int);
CDP: Modernize packet parsing style. Enable ND_LONGJMP_FROM_TCHECK. Remove many redundant ND_TCHECK*() instances. Report invalid packets as invalid with a reason, not truncated. Test whether the invalid packet is entirely in the buffer. Remove redundant and add plenty of new length checks. Reduce scope for some variables. Consistently decrement length when advancing the current pointer. Resort to ND_TCHECK_LEN() only when there are no better ways to test the packet buffer space. Do not pass caplen to cdp_print() and remove an improvised snapshot end guard. Move TLV type-specific code from cdp_print() into standalone small functions and upgrade a TLV name lookup table into a more developed TLV registry table along the lines of what was done for OpenFlow. In cdp_print_addr() instead of comparing pointers test the address counter only and trust the loop to do the length checks. Replace cdp_get_number() with GET_*() macros. Rewrite the code to make it easier to follow and make indentation more consistent while at it. Remove a stray CDP case block from print-chdlc.c.
2020-12-09 07:50:23 +08:00
extern void cdp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void cfm_print(netdissect_options *, const u_char *, u_int);
CHDLC: Modernize packet parsing Enable ND_LONGJMP_FROM_TCHECK and remove the "trunc" labels. Use ND_ICHECK_U() for length checks and add standard "invalid" sections. Remove a ndo_ll_hdr_len increment in a truncation case. Update chdlc_print() to a void function. Remove a now useless variable.
2022-08-10 21:02:33 +08:00
extern void chdlc_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void cisco_autorp_print(netdissect_options *, const u_char *, u_int);
Use ND_TCHECK() to do bounds checking. While we're at it, just use the record count to when iterating over records; the ND_TCHECK()s will make sure we don't run past the end of the captured data. Also get rid of an unused argument to cnfp_print().
2014-11-10 15:24:53 +08:00
extern void cnfp_print(netdissect_options *, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int);
extern void decnet_print(netdissect_options *, const u_char *, u_int, u_int);
extern void dhcp6_print(netdissect_options *, const u_char *, u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern void domain_print(netdissect_options *, const u_char *, u_int, int, int);
Handle the IPv6 Jumbo Payload option. If we see one when processing the hop-by-hop extension header, use it to set the payload length. In UDP, if we have a zero length field in the UDP header, and the length of the data handed to us is > 65535, treat that as a Jumbo Payload packet.
2019-05-03 11:01:08 +08:00
extern int dstopt_process(netdissect_options *, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void dtp_print(netdissect_options *, const u_char *, u_int);
NDOize 7 more small decoders This change converts DVMRP, DLT_ENC, EGP, GeoNet, NetFlow, SLIP and TFTP decoders.
2014-03-21 20:48:24 +08:00
extern void dvmrp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void eap_print(netdissect_options *, const u_char *, u_int);
Support for EAP Dump in RADIUS Messages (pull request #864)
2020-07-16 18:13:25 +08:00
extern void eapol_print(netdissect_options *, const u_char *);
NDOize 7 more small decoders This change converts DVMRP, DLT_ENC, EGP, GeoNet, NetFlow, SLIP and TFTP decoders.
2014-03-21 20:48:24 +08:00
extern void egp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void eigrp_print(netdissect_options *, const u_char *, u_int);
Have esp_print() handle printing its payload. That cleans things up a bit, including removing some duplicate code. Clean up some other things, and add a length check, while we're at it.
2019-03-29 02:45:43 +08:00
extern void esp_print(netdissect_options *, const u_char *, u_int, const u_char *, u_int, int, u_int);
Rework "Update more link-layer dissectors to void functions" It's a follow-up to commit 81dbf4a0b05092760d0ff0cdd48c692e4769ba99. There is no need to update ether_print(), ether_common_print() and ether_switch_tag_print() to void functions: back to u_int functions. There is also no need to add a flag parameter to ether_print(), ether_common_print() and ether_switch_tag_print(): Remove it.
2020-08-01 20:05:59 +08:00
extern u_int ether_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), const u_char *);
extern u_int ether_switch_tag_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), u_int);
CVE-2016-7985,7986/Change the way protocols print link-layer addresses. If a protocol that runs under a link-layer protocol would print the link-layer addresses for the packet as source and destination addresses for the packet, don't have it blithely assume those link-layer addresses are present or are at a particular offset from the beginning of that protocol's data; Ethertypes, for example, are used by a number of protocols, not all of which have Ethernet headers and not all of which have any MAC headers. Instead, pass the printers for those protocols structures with a pointer to the address data and a pointer to a routine that prints the address. Fixes some heap overflows found with American Fuzzy Lop by Hanno Böck.
2015-07-04 06:54:14 +08:00
extern int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern u_int fddi_print(netdissect_options *, const u_char *, u_int, u_int);
NDOize ForCES, MPLS LSP ping and OLSR decoders
2014-03-27 18:58:23 +08:00
extern void forces_print(netdissect_options *, const u_char *, u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern const u_char *fqdn_print(netdissect_options *, const u_char *, const u_char *);
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
extern u_int fr_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern int frag6_print(netdissect_options *, const u_char *, const u_char *);
extern void ftp_print(netdissect_options *, const u_char *, u_int);
extern void geneve_print(netdissect_options *, const u_char *, u_int);
CVE-2016-7985,7986/Change the way protocols print link-layer addresses. If a protocol that runs under a link-layer protocol would print the link-layer addresses for the packet as source and destination addresses for the packet, don't have it blithely assume those link-layer addresses are present or are at a particular offset from the beginning of that protocol's data; Ethertypes, for example, are used by a number of protocols, not all of which have Ethernet headers and not all of which have any MAC headers. Instead, pass the printers for those protocols structures with a pointer to the address data and a pointer to a routine that prints the address. Fixes some heap overflows found with American Fuzzy Lop by Hanno Böck.
2015-07-04 06:54:14 +08:00
extern void geonet_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void gre_print(netdissect_options *, const u_char *, u_int);
Handle the IPv6 Jumbo Payload option. If we see one when processing the hop-by-hop extension header, use it to set the payload length. In UDP, if we have a zero length field in the UDP header, and the length of the data handed to us is > 65535, treat that as a Jumbo Payload packet.
2019-05-03 11:01:08 +08:00
extern int hbhopt_process(netdissect_options *, const u_char *, int *, uint32_t *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void hex_and_ascii_print(netdissect_options *, const char *, const u_char *, u_int);
Spell "indent" where it belongs.
2021-03-28 20:44:35 +08:00
extern void hex_print(netdissect_options *, const char *indent, const u_char *cp, u_int);
extern void hex_print_with_offset(netdissect_options *, const char *indent, const u_char *cp, u_int, u_int);
Printer for HNCP (RFCs 7787 and 7788). This is joint work with Antonin Décimo.
2016-07-29 03:09:41 +08:00
extern void hncp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void hsrp_print(netdissect_options *, const u_char *, u_int);
extern void http_print(netdissect_options *, const u_char *, u_int);
extern void icmp6_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
Fix printing of Linux cooked captures with monitor-mode packets. Apparently, if you have an interface in monitor mode, capturing on the "any" device can get packets that have a SLL hatype of 803, which is the ARPHRD_ value for radiotap, and with the payload containing a radiotap header, followed by an 802.11 header, followed by the 802.11 payload. Handle that.
2018-11-13 14:03:49 +08:00
extern u_int ieee802_11_radio_print(netdissect_options *, const u_char *, u_int, u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern u_int ieee802_15_4_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void igmp_print(netdissect_options *, const u_char *, u_int);
extern void igrp_print(netdissect_options *, const u_char *, u_int);
extern void ip6_print(netdissect_options *, const u_char *, u_int);
extern void ipN_print(netdissect_options *, const u_char *, u_int);
extern void ip_print(netdissect_options *, const u_char *, u_int);
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
extern void ipcomp_print(netdissect_options *, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void ipx_netbios_print(netdissect_options *, const u_char *, u_int);
extern void ipx_print(netdissect_options *, const u_char *, u_int);
extern void isakmp_print(netdissect_options *, const u_char *, u_int, const u_char *);
Put IPv4/IPv6 protocol demultiplexing into a common routine. That means less duplication of functionality - and less chance that XXX-over-IPv4 will be handled but XXX-over-IPv6 won't be handled, or *vice versa*. (CARP and VRRP were being handled over IPv4 but not over IPv6; this fixes that.)
2019-03-28 10:58:26 +08:00
extern void isakmp_rfc3948_print(netdissect_options *, const u_char *, u_int, const u_char *, int, int, u_int);
CVE-2017-12897/ISO CLNS: Use ND_TTEST() for the bounds checks in isoclns_print(). This fixes a buffer over-read discovered by Kamil Frankowicz. Don't pass the remaining caplen - that's too hard to get right, and we were getting it wrong in at least one case; just use ND_TTEST(). Add a test using the capture file supplied by the reporter(s).
2017-02-04 04:24:14 +08:00
extern void isoclns_print(netdissect_options *, const u_char *, u_int);
NDOize AppleTalk, CDP and Kerberos decoders
2014-03-28 18:43:43 +08:00
extern void krb_print(netdissect_options *, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void l2tp_print(netdissect_options *, const u_char *, u_int);
extern void lane_print(netdissect_options *, const u_char *, u_int, u_int);
extern void ldp_print(netdissect_options *, const u_char *, u_int);
Initial commit for support of Type 3 and Type 4 LISP packets. Fixing Travis CI build for LISP commit Adding testcases for lisp notify and register Fixing build warnings Added ND_TCHECK for relevant headers Fixing ND_TCHECK2 issues Adding support for multiple LOC records for same EID entry Fixing review issues, adding detailed tests Adding support for verbose outputs Adding RFC information for UDP PORT defination Removing Spaces in type names Print EID record related flags in verbose mode Using tok2str Fixing -Wpedantic issues Negative testcases, Packet structure comments, verbose mode flag printing Printing Map Version Print auth_data, decouple type and xtr_present extraction, handle malformed packets correctly Tests for latest code changes Printing useful info incase not built with IPv6 support
2015-08-15 00:06:52 +08:00
extern void lisp_print(netdissect_options *, const u_char *, u_int);
NDOize AppleTalk, CDP and Kerberos decoders
2014-03-28 18:43:43 +08:00
extern u_int llap_print(netdissect_options *, const u_char *, u_int);
CVE-2016-7985,7986/Change the way protocols print link-layer addresses. If a protocol that runs under a link-layer protocol would print the link-layer addresses for the packet as source and destination addresses for the packet, don't have it blithely assume those link-layer addresses are present or are at a particular offset from the beginning of that protocol's data; Ethertypes, for example, are used by a number of protocols, not all of which have Ethernet headers and not all of which have any MAC headers. Instead, pass the printers for those protocols structures with a pointer to the address data and a pointer to a routine that prints the address. Fixes some heap overflows found with American Fuzzy Lop by Hanno Böck.
2015-07-04 06:54:14 +08:00
extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void lldp_print(netdissect_options *, const u_char *, u_int);
extern void lmp_print(netdissect_options *, const u_char *, u_int);
Loopback/CTP: Fixup loopback_print() declaration. [skip ci]
2020-09-19 07:54:41 +08:00
extern void loopback_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void lspping_print(netdissect_options *, const u_char *, u_int);
extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int);
extern void lwapp_data_print(netdissect_options *, const u_char *, u_int);
NDOize EAP, IEEE CFM, lwres, SIP & Syslog decoders
2014-04-01 23:42:33 +08:00
extern void lwres_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void m3ua_print(netdissect_options *, const u_char *, const u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern int macsec_print(netdissect_options *, const u_char **, u_int *, u_int *, u_int *, const struct lladdr_info *, const struct lladdr_info *);
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
extern u_int mfr_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void mobile_print(netdissect_options *, const u_char *, u_int);
extern int mobility_print(netdissect_options *, const u_char *, const u_char *);
extern void mpcp_print(netdissect_options *, const u_char *, u_int);
extern void mpls_print(netdissect_options *, const u_char *, u_int);
extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char);
extern void msdp_print(netdissect_options *, const u_char *, u_int);
extern void msnlb_print(netdissect_options *, const u_char *);
Clean up signed vs. unsigned. Use unsigned for lengths. Add additional length checks, as we can no longer cheat and rely on "underflow turns the length negative, so just check for > 0". Show most NBT and SMB numerical fields as unsigned, as that's what they are. Have "d" and "D" treat the value as signed; add "u" and "U" for unsigned values.
2018-01-07 14:18:00 +08:00
extern void nbt_tcp_print(netdissect_options *, const u_char *, u_int);
extern void nbt_udp137_print(netdissect_options *, const u_char *, u_int);
extern void nbt_udp138_print(netdissect_options *, const u_char *, u_int);
extern void netbeui_print(netdissect_options *, u_short, const u_char *, u_int);
NFS: Rename two printer functions Their names must end with '_print'
2017-11-16 20:49:06 +08:00
extern void nfsreply_noaddr_print(netdissect_options *, const u_char *, u_int, const u_char *);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern void nfsreply_print(netdissect_options *, const u_char *, u_int, const u_char *);
NFS: Rename two printer functions Their names must end with '_print'
2017-11-16 20:49:06 +08:00
extern void nfsreq_noaddr_print(netdissect_options *, const u_char *, u_int, const u_char *);
Remove parameters names in functions declarations As in most similar cases.
2019-03-31 20:36:49 +08:00
extern void nsh_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void ntp_print(netdissect_options *, const u_char *, u_int);
CVE-2016-7924/Add some bounds checks. Fixes a heap overflow found with American Fuzzy Lop by Hanno Böck. Also, get rid of the return value for oam_print(), as it's not used and not useful.
2015-07-04 07:39:25 +08:00
extern void oam_print(netdissect_options *, const u_char *, u_int, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void olsr_print(netdissect_options *, const u_char *, u_int, int);
OpenFlow: Modernize packet parsing style. Most OpenFlow functions operated on the (cp, ep, len) tuple, returned a pointer to tell the calling function where to decode next (which was not a good idea because the calling functions had the values of cp and len in the first place) and set the pointer to ep to indicate truncated data. Change them to use the (cp, len) tuple, to be void and to use nd_trunc(). Update the header comment to explain this new convention. Now if a low-level function gets an offset wrong, as in the bug recently fixed in of10_queue_props_print(), and manages to return, the error will not propagate into the calling function, which will be able to continue the decoding. Since cp does not have to be current anymore when the [void] function returns, remove a number of cp increments just before the return. Introduce OF_FWD(), which modifies both cp and len in sync, and OF_CHK_FWD(), which also does a bounds check, and use these macros instead of incrementing cp directly in every function that has both cp and len arguments. Update the code to account for len that is decrementing as cp is incrementing. Commit ad69daa2 was fine for its time, but the introduction of the GET macros had made it obsolete. Instead of reintroducing ep back merge of_header_body_print() into openflow_print() to simplify the handling of pointers, sizes and error conditions, all in the style above. While at it, subtract OF_HEADER_FIXLEN from the declared OpenFlow message length before passing it to of10_header_body_print() and make the latter the only function that has to know about the common header size (clarify it in the comment). This and the sufficiently current cp and len disencumber the following functions of type-specific length calculations: of10_features_reply_print(), of10_flow_mod_print(), of10_stats_request_print(), of10_stats_reply_print(), of10_packet_out_print(), of10_packet_in_print() and of10_error_print(). The resulting code in most cases addresses the not yet processed part of the declared structure with just cp and len: nextfunc(ndo, cp, len) and ND_TCHECK_LEN(cp, len) do the right thing regardless of how far the current decoder has made it into the current structure. This makes all the cp0 and len0 snapshot variables obsolete, so remove them too. Update a test case output: the missing closing quote now correctly means that the snapshot end is inside the "data" field of a BSN_SHELL_COMMAND vendor message, not after it.
2020-09-24 00:02:44 +08:00
extern void openflow_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void ospf6_print(netdissect_options *, const u_char *, u_int);
Rename some printer functions to *_print Moreover: Fix spaces.
2018-02-22 21:19:42 +08:00
extern int ospf_grace_lsa_print(netdissect_options *, const u_char *, u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern void ospf_print(netdissect_options *, const u_char *, u_int, const u_char *);
Rename some printer functions to *_print Moreover: Fix spaces.
2018-02-22 21:19:42 +08:00
extern int ospf_te_lsa_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void otv_print(netdissect_options *, const u_char *, u_int);
extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *);
extern void pim_print(netdissect_options *, const u_char *, u_int, const u_char *);
extern void pimv1_print(netdissect_options *, const u_char *, u_int);
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
extern u_int ppp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern u_int pppoe_print(netdissect_options *, const u_char *, u_int);
extern void pptp_print(netdissect_options *, const u_char *);
Make the length argument to print_unknown_data() unsigned. All data lengths should be unsigned.
2020-05-28 00:25:15 +08:00
extern int print_unknown_data(netdissect_options *, const u_char *, const char *, u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern void ptp_print(netdissect_options *, const u_char *, u_int);
Add some const qualifiers
2018-03-16 17:39:25 +08:00
extern const char *q922_string(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void q933_print(netdissect_options *, const u_char *, u_int);
Initial support to parse QUIC packets.
2021-10-01 09:34:46 +08:00
extern int quic_detect(netdissect_options *, const u_char *, const u_int);
extern void quic_print(netdissect_options *, const u_char *, const u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void radius_print(netdissect_options *, const u_char *, u_int);
Initial support for the REdis Serialization Protocol known as RESP. This commit adds support for RESP as defined in: http://redis.io/topics/protocol. It also supports inline commands and pipelining. Due to the popularity of RESP, numerous services are emerging that use this protocol. You may decode RESP packets on arbitrary ports using the "-T resp" option. Example captures can be found in tests/resp_*. A simple way to test this parser is to start redis-server and then run redis-cli commands such as "redis-cli set key value". Traditionally, redis-cli monitor is used to debug redis. Unfortunately, the "monitor" command can cause significant load on a redis-server in production. This parser may be used as a non-invasive alternative to redis-cli monitor.
2016-01-13 01:32:55 +08:00
extern void resp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void rip_print(netdissect_options *, const u_char *, u_int);
extern void ripng_print(netdissect_options *, const u_char *, unsigned int);
extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int);
NDOize LLDP, PPP and RSVP decoders
2014-04-02 20:39:18 +08:00
extern void rsvp_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern int rt6_print(netdissect_options *, const u_char *, const u_char *);
Support more Realtek protocols than RRCP. The Ethertype 0x8899 is used by Realtek for several over-the-wire protocols, as well as for supplying tag information to a host CPU from a Realtek chip. Add code to handle protocols other than RRCP, although we don't fully dissect all of them.
2022-01-23 17:44:16 +08:00
extern void rtl_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *, const struct lladdr_info *);
Add a routine to print "text protocols", and add FTP/HTTP/SMTP/RTSP support. "Text protocols" are protocols that have the general feel of FTP, with command lines with a command name and space-separated arguments and response lines beginning with a 3-digit reply code. They can also include HTTP-style headers and an entity body. We add support for the FTP control channel, HTTP, SMTP, and RTSP. We also change the SIP printer to use it.
2014-10-20 02:21:44 +08:00
extern void rtsp_print(netdissect_options *, const u_char *, u_int);
Rx: Make UDP ports 16-bit to compile (GH #868). Gisle Vanem reported that GCC 7.1 for DJGPP sees u_int and uint32_t as two different types, hence the forward declaration for rx_cache_find() was different from the actual function. UDP port numbers are 16-bit and udp_print() appropriately uses uint16_t for them. Use the same type in the downstream Rx-specific code to make things simpler and consistent.
2020-08-13 07:59:44 +08:00
extern void rx_print(netdissect_options *, const u_char *, u_int, uint16_t, uint16_t, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void sctp_print(netdissect_options *, const u_char *, const u_char *, u_int);
extern void sflow_print(netdissect_options *, const u_char *, u_int);
extern void sip_print(netdissect_options *, const u_char *, u_int);
extern void slow_print(netdissect_options *, const u_char *, u_int);
Clean up signed vs. unsigned. Use unsigned for lengths. Add additional length checks, as we can no longer cheat and rely on "underflow turns the length negative, so just check for > 0". Show most NBT and SMB numerical fields as unsigned, as that's what they are. Have "d" and "D" treat the value as signed; add "u" and "U" for unsigned values.
2018-01-07 14:18:00 +08:00
extern void smb_tcp_print(netdissect_options *, const u_char *, u_int);
Add a routine to print "text protocols", and add FTP/HTTP/SMTP/RTSP support. "Text protocols" are protocols that have the general feel of FTP, with command lines with a command name and space-separated arguments and response lines beginning with a 3-digit reply code. They can also include HTTP-style headers and an entity body. We add support for the FTP control channel, HTTP, SMTP, and RTSP. We also change the SIP printer to use it.
2014-10-20 02:21:44 +08:00
extern void smtp_print(netdissect_options *, const u_char *, u_int);
CVE-2016-7985,7986/Change the way protocols print link-layer addresses. If a protocol that runs under a link-layer protocol would print the link-layer addresses for the packet as source and destination addresses for the packet, don't have it blithely assume those link-layer addresses are present or are at a particular offset from the beginning of that protocol's data; Ethertypes, for example, are used by a number of protocols, not all of which have Ethernet headers and not all of which have any MAC headers. Instead, pass the printers for those protocols structures with a pointer to the address data and a pointer to a routine that prints the address. Fixes some heap overflows found with American Fuzzy Lop by Hanno Böck.
2015-07-04 06:54:14 +08:00
extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void snmp_print(netdissect_options *, const u_char *, u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern void someip_print(netdissect_options *, const u_char *, const u_int);
extern void ssh_print(netdissect_options *, const u_char *, u_int);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void stp_print(netdissect_options *, const u_char *, u_int);
SUNRPC: Rename entry function Most printer entry functions are based on the file name (without print-). Do the same for SUNRPC (sunrpcrequest_print -> sunrpc_print). This change allows easier update by script.
2017-11-16 17:18:43 +08:00
extern void sunrpc_print(netdissect_options *, const u_char *, u_int, const u_char *);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern void syslog_print(netdissect_options *, const u_char *, u_int);
extern void tcp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
extern void telnet_print(netdissect_options *, const u_char *, u_int);
extern void tftp_print(netdissect_options *, const u_char *, u_int);
extern void timed_print(netdissect_options *, const u_char *);
extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int);
extern void udld_print(netdissect_options *, const u_char *, u_int);
Put IPv4/IPv6 protocol demultiplexing into a common routine. That means less duplication of functionality - and less chance that XXX-over-IPv4 will be handled but XXX-over-IPv6 won't be handled, or *vice versa*. (CARP and VRRP were being handled over IPv4 but not over IPv6; this fixes that.)
2019-03-28 10:58:26 +08:00
extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int, u_int);
Remove all storage class specifier 'register' Let the compiler do the optimizations (or not) based on build options. Avoid 'value has been optimized out' messages in gdb using '-O0'.
2017-12-14 02:17:47 +08:00
extern int vjc_print(netdissect_options *, const u_char *, u_short);
extern void vqp_print(netdissect_options *, const u_char *, u_int);
VRRP: Add support for IPv6 Signed-off-by: Quentin Armitage <quentin@armitage.org.uk>
2021-11-01 00:52:54 +08:00
extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int, int);
VTP: Fix a warning The warning on AppVeyor (Visual Studio 2017) was: print-vtp.c(122): warning C4028: formal parameter 3 different from declaration
2021-02-28 21:50:06 +08:00
extern void vtp_print(netdissect_options *, const u_char *, const u_int);
Remove parameters names in functions declarations As in most similar cases.
2019-03-31 20:36:49 +08:00
extern void vxlan_gpe_print(netdissect_options *, const u_char *, u_int);
Restore alphabetical order in Makefile.in and netdissect.h
2016-03-23 00:23:40 +08:00
extern void vxlan_print(netdissect_options *, const u_char *, u_int);
Use 'u_char *' type for input buffer pointer like in most similar cases
2018-01-03 02:08:01 +08:00
extern void wb_print(netdissect_options *, const u_char *, u_int);
WHOIS: Add its own printer source file and printer function Like all other text protocols. This is a follow-up to 185b7ce04b182d2d7e490f23a3f0c7b9ea5916e4.
2022-01-14 20:23:28 +08:00
extern void whois_print(netdissect_options *, const u_char *, u_int);
IEEE 802.15.4 printer which understands frame version 2 frames, and also knows how to print some mac commands and IE contents. Also includes the zep printer to decode ZigBee Encapsulation Protocol frames
2017-03-26 09:48:28 +08:00
extern void zep_print(netdissect_options *, const u_char *, u_int);
Zephyr: Update 'length' type to unsigned It is unsigned in the calling function udp_print().
2021-05-22 15:41:31 +08:00
extern void zephyr_print(netdissect_options *, const u_char *, u_int);
ZMTP: Rename a printer function Its name must end with '_print'
2017-11-16 21:17:26 +08:00
extern void zmtp1_datagram_print(netdissect_options *, const u_char *, const u_int);
netdissect.h: Keep the printers declarations names sorted Moreover: Declare macsec_print() on one line. Remove an extra space. [skip ci]
2021-05-22 19:41:26 +08:00
extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
Convert the IPv6 printer to use netdissect.
2010-11-08 04:50:16 +08:00
Checksum stuff must go in netdissect.h (remainder)
2015-06-10 22:17:27 +08:00
/* checksum routines */
extern void init_checksum(void);
extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int);
extern uint16_t create_osi_cksum(const uint8_t *, int, int);
Go with Wireshark's Internet checksum routine. The Wireshark routine is based on the BSD in-kernel portable checksum routine (thus BSD-licensed); it takes a vector of pointers and lengths and checksums the concatenation of the buffers in question (just as the BSD in-kernel routine checksums a chain of mbufs). This simplifies the "with a pseudo-header" checksums; hopefully it'll fix up the problems being seen on some big-endian platforms, which might be due to hand-calculating some or all of the checksum and doing so incorrectly. It also gets rid of some code that might be dereferencing unaligned pointers.
2011-06-14 05:08:51 +08:00
struct cksum_vec {
More getting rid of old u_intN_t.
2014-04-23 15:45:13 +08:00
const uint8_t *ptr;
Go with Wireshark's Internet checksum routine. The Wireshark routine is based on the BSD in-kernel portable checksum routine (thus BSD-licensed); it takes a vector of pointers and lengths and checksums the concatenation of the buffers in question (just as the BSD in-kernel routine checksums a chain of mbufs). This simplifies the "with a pseudo-header" checksums; hopefully it'll fix up the problems being seen on some big-endian platforms, which might be due to hand-calculating some or all of the checksum and doing so incorrectly. It also gets rid of some code that might be dereferencing unaligned pointers.
2011-06-14 05:08:51 +08:00
int len;
};
More getting rid of old u_intN_t.
2014-04-23 15:45:13 +08:00
extern uint16_t in_cksum(const struct cksum_vec *, int);
extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t);
Checksum stuff must go in netdissect.h
2015-06-10 21:47:54 +08:00
Put IPv4/IPv6 protocol demultiplexing into a common routine. That means less duplication of functionality - and less chance that XXX-over-IPv4 will be handled but XXX-over-IPv6 won't be handled, or *vice versa*. (CARP and VRRP were being handled over IPv4 but not over IPv6; this fixes that.)
2019-03-28 10:58:26 +08:00
/* IP protocol demuxing routines */
IPv4/IPv6 demux: Rename a printer Rename ip_print_demux() to ip_demux_print(), with _print suffix like in most similar cases. Moreover: Rename a test.
2020-03-08 20:48:42 +08:00
extern void ip_demux_print(netdissect_options *, const u_char *, u_int, u_int, int, u_int, uint8_t, const u_char *);
Put IPv4/IPv6 protocol demultiplexing into a common routine. That means less duplication of functionality - and less chance that XXX-over-IPv4 will be handled but XXX-over-IPv6 won't be handled, or *vice versa*. (CARP and VRRP were being handled over IPv4 but not over IPv6; this fixes that.)
2019-03-28 10:58:26 +08:00
Clean up types to squelch narrowing warnings.
2019-04-18 10:53:00 +08:00
extern uint16_t nextproto4_cksum(netdissect_options *, const struct ip *, const uint8_t *, u_int, u_int, uint8_t);
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
Don't overwrite the destination IPv6 address for routing headers. If we have a routing header, instead of overwriting the packet's IPv6 destination address in the packet with the final destination, so that the next protocol's checksum routine can use it, we do as we do for IPv4, and, in the "next protocol checksum" routine, scan the headers looking for a routing header and, if we find one, copy the final destination from it. While we're at it, clean up a few things.
2016-02-13 12:26:39 +08:00
/* in print-ip6.c */
Clean up types to squelch narrowing warnings.
2019-04-18 10:53:00 +08:00
extern uint16_t nextproto6_cksum(netdissect_options *, const struct ip6_hdr *, const uint8_t *, u_int, u_int, uint8_t);
Don't overwrite the destination IPv6 address for routing headers. If we have a routing header, instead of overwriting the packet's IPv6 destination address in the packet with the final destination, so that the next protocol's checksum routine can use it, we do as we do for IPv4, and, in the "next protocol checksum" routine, scan the headers looking for a routing header and, if we find one, copy the final destination from it. While we're at it, clean up a few things.
2016-02-13 12:26:39 +08:00
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
/* Utilities */
Add the nd_print_trunc() function Use the ndo->ndo_protocol field to print a " [|protocol]" message.
2018-05-02 23:12:50 +08:00
extern void nd_print_trunc(netdissect_options *);
Add the nd_print_protocol() function Use the ndo->ndo_protocol field to print the protocol name.
2019-03-19 21:49:34 +08:00
extern void nd_print_protocol(netdissect_options *);
Add the nd_print_protocol_caps() function Use the ndo->ndo_protocol field to print the protocol name in CAPS.
2019-06-11 23:52:07 +08:00
extern void nd_print_protocol_caps(netdissect_options *);
Add the nd_print_invalid() function It prints " (invalid)", used for malformed or corrupted packets. Moreover: Update CONTRIBUTING.
2018-09-11 18:27:55 +08:00
extern void nd_print_invalid(netdissect_options *);
Add the nd_print_trunc() function Use the ndo->ndo_protocol field to print a " [|protocol]" message.
2018-05-02 23:12:50 +08:00
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern int mask2plen(uint32_t);
extern int mask62plen(const u_char *);
added "make check" when optimization is not on, glibc6 doesn't define ntohs(), and our attempt to optimize it for x86 doesn't work --- the functions need to be static, not extern. added decryption of IKE v2 payloads, when keys are provided by -E.
2007-11-25 02:13:33 +08:00
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
extern const char *dnnum_string(netdissect_options *, u_short);
added "make check" when optimization is not on, glibc6 doesn't define ntohs(), and our attempt to optimize it for x86 doesn't work --- the functions need to be static, not extern. added decryption of IKE v2 payloads, when keys are provided by -E.
2007-11-25 02:13:33 +08:00
Fix some narrowing warnings on LP64/LLP64 platforms. Add a ND_BYTES_AVAILABLE_AFTER() macro to find the number of bytes available in the captured data, starting at the byte pointed to by the argument. It returns a u_int rather than a ptrdiff_t, so it'll be 32 bits on LP64 and LLP64 platforms as well as on ILP32 platforms. Use that macro. Make size-of-buffer arguments size_t. Cast some size_t and ptrdiff_t values to u_int or int.
2019-04-19 01:13:49 +08:00
extern int decode_prefix4(netdissect_options *, const u_char *, u_int, char *, size_t);
extern int decode_prefix6(netdissect_options *, const u_char *, u_int, char *, size_t);
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
ESP: Rename two printers Rename esp_print_decodesecret() to esp_decodesecret_print() and esp_print_decrypt_buffer_by_ikev2() to esp_decrypt_buffer_by_ikev2_print() with _print suffix like in most similar cases.
2020-03-08 20:28:17 +08:00
extern void esp_decodesecret_print(netdissect_options *);
extern int esp_decrypt_buffer_by_ikev2_print(netdissect_options *, int,
Clean up ISAKMP dissection, use nd_ types and EXTRACT_ macros. Add some RFC numbers. Structures with nd_ types work well if you overlay them on top of the packet buffer, but not as well with an on-the-stack structure into which you copy from the packet, which is ugly if you do *both* with the same structure. Use overlaying uniformly. Add EXTRACT_ macros as necessary for the nd_ types. Make stuff unsigned if it's appropriate. Use unsigned formats for unsigned values. A number of routines are passed the length of a payload, so they don't have to re-fetch that length themselves. That length has been pre-checked to make sure it's big enough for the payload header; note that in comments.
2017-12-18 13:49:46 +08:00
const u_char spii[8],
const u_char spir[8],
Reorganize netdissect.h Group together: - DLT printers (sorted) - other printers (sorted) - utilities
2015-09-18 21:14:31 +08:00
const u_char *, const u_char *);
Adding support for ISO CALM FAST and ETSI GeoNetworking
2013-06-26 05:43:19 +08:00
beginnings of library version of netdissect.
2004-03-25 11:29:53 +08:00
#endif /* netdissect_h */
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