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wget: initial support for ftps://

Browse Source 
function                                             old     new   delta
spawn_ssl_client                                       -     185    +185
parse_url                                            409     461     +52
packed_usage                                       32259   32278     +19
tls_run_copy_loop                                    293     306     +13
ssl_client_main                                      128     138     +10
showmode                                             330     338      +8
P_FTPS                                                 -       5      +5
filter_datapoints                                    177     179      +2
deflate                                              907     905      -2
decode_one_format                                    723     716      -7
wget_main                                           2591    2440    -151
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 6/3 up/down: 294/-160)          Total: 134 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-02-06 15:15:08 +01:00
parent e999657f6d
commit 403f2999f9
4 changed files with 42 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/libbb.h
View File

@ -772,7 +772,8 @@ static inline tls_state_t *new_tls_state(void)
return tls;
}
void tls_handshake(tls_state_t *tls, const char *sni) FAST_FUNC;
void tls_run_copy_loop(tls_state_t *tls) FAST_FUNC;
#define TLSLOOP_EXIT_ON_LOCAL_EOF (1 << 0)
void tls_run_copy_loop(tls_state_t *tls, unsigned flags) FAST_FUNC;
void socket_want_pktinfo(int fd) FAST_FUNC;

14
networking/ssl_client.c
View File

@ -15,7 +15,7 @@
//kbuild:lib-$(CONFIG_SSL_CLIENT) += ssl_client.o
//usage:#define ssl_client_trivial_usage
//usage: "-s FD [-r FD] [-n SNI]"
//usage: "[-e] -s FD [-r FD] [-n SNI]"
//usage:#define ssl_client_full_usage ""
#include "libbb.h"
@ -30,26 +30,28 @@ int ssl_client_main(int argc UNUSED_PARAM, char **argv)
// INIT_G();
tls = new_tls_state();
opt = getopt32(argv, "s:#r:#n:", &tls->ofd, &tls->ifd, &sni);
if (!(opt & 2)) {
opt = getopt32(argv, "es:#r:#n:", &tls->ofd, &tls->ifd, &sni);
if (!(opt & (1<<2))) {
/* -r N defaults to -s N */
tls->ifd = tls->ofd;
}
if (!(opt & 3)) {
if (!(opt & (3<<1))) {
if (!argv[1])
bb_show_usage();
/* Undocumented debug feature: without -s and -r, takes HOST arg and connects to it */
//
// Talk to kernel.org:
// printf "GET / HTTP/1.1\r\nHost: kernel.org\r\n\r\n" | ./busybox ssl_client kernel.org
// printf "GET / HTTP/1.1\r\nHost: kernel.org\r\n\r\n" | busybox ssl_client kernel.org
if (!sni)
sni = argv[1];
tls->ifd = tls->ofd = create_and_connect_stream_or_die(argv[1], 443);
}
tls_handshake(tls, sni);
tls_run_copy_loop(tls);
BUILD_BUG_ON(TLSLOOP_EXIT_ON_LOCAL_EOF != 1);
tls_run_copy_loop(tls, /*flags*/ opt & 1);
return EXIT_SUCCESS;
}

4
networking/tls.c
View File

@ -1727,7 +1727,7 @@ static void tls_xwrite(tls_state_t *tls, int len)
// openssl s_server -key key.pem -cert server.pem -debug -tls1_2 -no_tls1 -no_tls1_1 -cipher NULL
// openssl s_client -connect 127.0.0.1:4433 -debug -tls1_2 -no_tls1 -no_tls1_1 -cipher NULL-SHA256
void FAST_FUNC tls_run_copy_loop(tls_state_t *tls)
void FAST_FUNC tls_run_copy_loop(tls_state_t *tls, unsigned flags)
{
int inbuf_size;
const int INBUF_STEP = 4 * 1024;
@ -1762,6 +1762,8 @@ void FAST_FUNC tls_run_copy_loop(tls_state_t *tls)
*/
pfds[0].fd = -1;
tls_free_outbuf(tls); /* mem usage optimization */
if (flags & TLSLOOP_EXIT_ON_LOCAL_EOF)
break;
} else {
if (nread == inbuf_size) {
/* TLS has per record overhead, if input comes fast,

37
networking/wget.c
View File

@ -48,6 +48,7 @@
//config:
//config:config FEATURE_WGET_HTTPS
//config: bool "Support HTTPS using internal TLS code"
//it also enables FTPS support, but it's not well tested yet
//config: default y
//config: depends on WGET
//config: select TLS
@ -176,6 +177,9 @@ struct host_info {
static const char P_FTP[] ALIGN1 = "ftp";
static const char P_HTTP[] ALIGN1 = "http";
#if SSL_SUPPORTED
# if ENABLE_FEATURE_WGET_HTTPS
static const char P_FTPS[] ALIGN1 = "ftps";
# endif
static const char P_HTTPS[] ALIGN1 = "https";
#endif
@ -484,6 +488,12 @@ static void parse_url(const char *src_url, struct host_info *h)
h->port = bb_lookup_port(P_FTP, "tcp", 21);
} else
#if SSL_SUPPORTED
# if ENABLE_FEATURE_WGET_HTTPS
if (strcmp(url, P_FTPS) == 0) {
h->port = bb_lookup_port(P_FTPS, "tcp", 990);
h->protocol = P_FTPS;
} else
# endif
if (strcmp(url, P_HTTPS) == 0) {
h->port = bb_lookup_port(P_HTTPS, "tcp", 443);
h->protocol = P_HTTPS;
@ -678,7 +688,7 @@ static int spawn_https_helper_openssl(const char *host, unsigned port)
#endif
#if ENABLE_FEATURE_WGET_HTTPS
static void spawn_ssl_client(const char *host, int network_fd)
static void spawn_ssl_client(const char *host, int network_fd, int flags)
{
int sp[2];
int pid;
@ -703,17 +713,19 @@ static void spawn_ssl_client(const char *host, int network_fd)
tls_state_t *tls = new_tls_state();
tls->ifd = tls->ofd = network_fd;
tls_handshake(tls, servername);
tls_run_copy_loop(tls);
tls_run_copy_loop(tls, flags);
exit(0);
} else {
char *argv[5];
char *argv[6];
xmove_fd(network_fd, 3);
argv[0] = (char*)"ssl_client";
argv[1] = (char*)"-s3";
//TODO: if (!is_ip_address(servername))...
argv[2] = (char*)"-n";
argv[3] = servername;
argv[4] = NULL;
argv[4] = (flags & TLSLOOP_EXIT_ON_LOCAL_EOF ? (char*)"-e" : NULL);
argv[5] = NULL;
BB_EXECVP(argv[0], argv);
bb_perror_msg_and_die("can't execute '%s'", argv[0]);
}
@ -737,6 +749,11 @@ static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_
target->user = xstrdup("anonymous:busybox@");
sfp = open_socket(lsa);
#if ENABLE_FEATURE_WGET_HTTPS
if (target->protocol == P_FTPS)
spawn_ssl_client(target->host, fileno(sfp), TLSLOOP_EXIT_ON_LOCAL_EOF);
#endif
if (ftpcmd(NULL, NULL, sfp) != 220)
bb_error_msg_and_die("%s", sanitize_string(G.wget_buf + 4));
@ -794,6 +811,10 @@ static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_
*dfpp = open_socket(lsa);
//For encrypted data, need to send "PROT P" and get "200 PROT now Private" response first
//Without it (or with "PROT C"), data is sent unencrypted
//spawn_ssl_client(target->host, fileno(*dfpp), /*flags*/ 0);
if (G.beg_range != 0) {
sprintf(G.wget_buf, "REST %"OFF_FMT"u", G.beg_range);
if (ftpcmd(G.wget_buf, NULL, sfp) == 350)
@ -981,7 +1002,7 @@ static void download_one_url(const char *url)
/* Use the proxy if necessary */
use_proxy = (strcmp(G.proxy_flag, "off") != 0);
if (use_proxy) {
proxy = getenv(target.protocol == P_FTP ? "ftp_proxy" : "http_proxy");
proxy = getenv(target.protocol[0] == 'f' ? "ftp_proxy" : "http_proxy");
//FIXME: what if protocol is https? Ok to use http_proxy?
use_proxy = (proxy && proxy[0]);
if (use_proxy)
@ -1042,7 +1063,7 @@ static void download_one_url(const char *url)
/*G.content_len = 0; - redundant, got_clen = 0 is enough */
G.got_clen = 0;
G.chunked = 0;
if (use_proxy || target.protocol != P_FTP) {
if (use_proxy || target.protocol[0] != 'f' /*not ftp[s]*/) {
/*
* HTTP session
*/
@ -1060,7 +1081,7 @@ static void download_one_url(const char *url)
# if ENABLE_FEATURE_WGET_HTTPS
if (fd < 0) { /* no openssl? try internal */
sfp = open_socket(lsa);
spawn_ssl_client(server.host, fileno(sfp));
spawn_ssl_client(server.host, fileno(sfp), /*flags*/ 0);
goto socket_opened;
}
# else
@ -1077,7 +1098,7 @@ static void download_one_url(const char *url)
/* Only internal TLS support is configured */
sfp = open_socket(lsa);
if (target.protocol == P_HTTPS)
spawn_ssl_client(server.host, fileno(sfp));
spawn_ssl_client(server.host, fileno(sfp), /*flags*/ 0);
#else
/* ssl (https) support is not configured */
sfp = open_socket(lsa);