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0a18a9d744
php-src/ext/standard/ftp_fopen_wrapper.c
Wez Furlong 0a18a9d744 A add much more useful select(2) implementation than is provided by 
windows sockets.  The winsock implementation will only work with sockets;
our implementation works with sockets and file descriptors.
By association, stream_select() will now operate correctly with files, pipes and sockets.

This change required linking against the winsock2 library.  In terms of
compatibility, only older versions of windows 95 do not have winsock2
installed by default.  It is available as a redistributable file, and is most likely installed by any OS patches (eg: Internet Explorer) applied by the user.

Also, add a win32 compatible pipe test when opening a stream from a pipe.  This test will only work on NT, win2k and XP platforms.  Without this test, interleaved fread() and select() calls would cause the read buffer to be clobbered.  I will be working on a fix for this issue for win9x.
2003-02-16 03:48:49 +00:00

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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@php.net> |
| Jim Winstead <jimw@php.net> |
| Hartmut Holzgraefe <hholzgra@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "php_globals.h"
#include "php_network.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef PHP_WIN32
#include <windows.h>
#include <winsock2.h>
#define O_RDONLY _O_RDONLY
#include "win32/param.h"
#elif defined(NETWARE)
/*#include <ws2nlm.h>*/
/*#include <sys/socket.h>*/
#ifdef NEW_LIBC
#include <sys/param.h>
#else
#include "netware/param.h"
#endif
#else
#include <sys/param.h>
#endif
#include "php_standard.h"
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef PHP_WIN32
#include <winsock2.h>
#elif defined(NETWARE) && defined(USE_WINSOCK)
/*#include <ws2nlm.h>*/
#include <novsock2.h>
#else
#include <netinet/in.h>
#include <netdb.h>
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#endif
#if defined(PHP_WIN32) || defined(__riscos__) || defined(NETWARE)
#undef AF_UNIX
#endif
#if defined(AF_UNIX)
#include <sys/un.h>
#endif
#include "php_fopen_wrappers.h"
static inline int get_ftp_result(php_stream *stream, char *buffer, size_t buffer_size TSRMLS_DC)
{
while (php_stream_gets(stream, buffer, buffer_size-1) &&
!(isdigit((int) buffer[0]) && isdigit((int) buffer[1]) &&
isdigit((int) buffer[2]) && buffer[3] == ' '));
return strtol(buffer, NULL, 10);
}
#define GET_FTP_RESULT(stream) get_ftp_result((stream), tmp_line, sizeof(tmp_line) TSRMLS_CC)
#define FTPS_ENCRYPT_DATA 1
static int php_stream_ftp_stream_stat(php_stream_wrapper *wrapper,
php_stream *stream,
php_stream_statbuf *ssb
TSRMLS_DC)
{
/* For now, we return with a failure code to prevent the underlying
* file's details from being used instead. */
return -1;
}
static int php_stream_ftp_stream_close(php_stream_wrapper *wrapper,
php_stream *stream
TSRMLS_DC)
{
php_stream *controlstream = (php_stream *)stream->wrapperdata;
if (controlstream) {
php_stream_write_string(controlstream, "QUIT\r\n");
php_stream_close(controlstream);
stream->wrapperdata = NULL;
}
return 0;
}
static php_stream_wrapper_ops ftp_stream_wops = {
php_stream_url_wrap_ftp,
php_stream_ftp_stream_close, /* stream_close */
php_stream_ftp_stream_stat,
NULL, /* stat_url */
NULL, /* opendir */
"FTP"
};
php_stream_wrapper php_stream_ftp_wrapper = {
&ftp_stream_wops,
NULL,
1 /* is_url */
};
/* {{{ php_fopen_url_wrap_ftp
*/
php_stream * php_stream_url_wrap_ftp(php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)
{
php_stream *stream=NULL, *datastream=NULL;
php_url *resource=NULL;
char tmp_line[512];
char ip[sizeof("123.123.123.123")];
unsigned short portno;
char *scratch;
int result;
int i, use_ssl;
#if HAVE_OPENSSL_EXT
int use_ssl_on_data=0;
php_stream *reuseid=NULL;
#endif
char *tpath, *ttpath, *hoststart=NULL;
size_t file_size = 0;
tmp_line[0] = '\0';
if (strpbrk(mode, "a+")) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "FTP does not support simultaneous read/write connections.");
return NULL;
}
resource = php_url_parse((char *) path);
if (resource == NULL || resource->path == NULL)
return NULL;
use_ssl = resource->scheme && (strlen(resource->scheme) > 3) && resource->scheme[3] == 's';
/* use port 21 if one wasn't specified */
if (resource->port == 0)
resource->port = 21;
stream = php_stream_sock_open_host(resource->host, resource->port, SOCK_STREAM, NULL, 0);
if (stream == NULL) {
result = 0; /* silence */
goto errexit;
}
php_stream_context_set(stream, context);
php_stream_notify_info(context, PHP_STREAM_NOTIFY_CONNECT, NULL, 0);
/* Start talking to ftp server */
result = GET_FTP_RESULT(stream);
if (result > 299 || result < 200) {
php_stream_notify_error(context, PHP_STREAM_NOTIFY_FAILURE, tmp_line, result);
goto errexit;
}
#if HAVE_OPENSSL_EXT
if (use_ssl) {
/* send the AUTH TLS request name */
php_stream_write_string(stream, "AUTH TLS\r\n");
/* get the response */
result = GET_FTP_RESULT(stream);
if (result != 234) {
/* AUTH TLS not supported try AUTH SSL */
php_stream_write_string(stream, "AUTH SSL\r\n");
/* get the response */
result = GET_FTP_RESULT(stream);
if (result != 334) {
use_ssl = 0;
} else {
/* we must reuse the old SSL session id */
/* if we talk to an old ftpd-ssl */
reuseid = stream;
}
} else {
/* encrypt data etc */
}
}
if (use_ssl) {
if (use_ssl && php_stream_sock_ssl_activate(stream, 1) == FAILURE) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Unable to activate SSL mode");
php_stream_close(stream);
stream = NULL;
goto errexit;
}
/* set PBSZ to 0 */
php_stream_write_string(stream, "PBSZ 0\r\n");
/* ignore the response */
result = GET_FTP_RESULT(stream);
/* set data connection protection level */
#if FTPS_ENCRYPT_DATA
php_stream_write_string(stream, "PROT P\r\n");
/* get the response */
result = GET_FTP_RESULT(stream);
use_ssl_on_data = (result >= 200 && result<=299) || reuseid;
#else
php_stream_write_string(stream, "PROT C\r\n");
/* get the response */
result = GET_FTP_RESULT(stream);
#endif
}
#endif
/* send the user name */
php_stream_write_string(stream, "USER ");
if (resource->user != NULL) {
php_raw_url_decode(resource->user, strlen(resource->user));
php_stream_write_string(stream, resource->user);
} else {
php_stream_write_string(stream, "anonymous");
}
php_stream_write_string(stream, "\r\n");
/* get the response */
result = GET_FTP_RESULT(stream);
/* if a password is required, send it */
if (result >= 300 && result <= 399) {
php_stream_notify_info(context, PHP_STREAM_NOTIFY_AUTH_REQUIRED, tmp_line, 0);
php_stream_write_string(stream, "PASS ");
if (resource->pass != NULL) {
php_raw_url_decode(resource->pass, strlen(resource->pass));
php_stream_write_string(stream, resource->pass);
} else {
/* if the user has configured who they are,
send that as the password */
if (cfg_get_string("from", &scratch) == SUCCESS) {
php_stream_write_string(stream, scratch);
} else {
php_stream_write_string(stream, "anonymous");
}
}
php_stream_write_string(stream, "\r\n");
/* read the response */
result = GET_FTP_RESULT(stream);
if (result > 299 || result < 200) {
php_stream_notify_error(context, PHP_STREAM_NOTIFY_AUTH_RESULT, tmp_line, result);
} else {
php_stream_notify_info(context, PHP_STREAM_NOTIFY_AUTH_RESULT, tmp_line, result);
}
}
if (result > 299 || result < 200)
goto errexit;
/* set the connection to be binary */
php_stream_write_string(stream, "TYPE I\r\n");
result = GET_FTP_RESULT(stream);
if (result > 299 || result < 200)
goto errexit;
/* find out the size of the file (verifying it exists) */
php_stream_write_string(stream, "SIZE ");
php_stream_write_string(stream, resource->path);
php_stream_write_string(stream, "\r\n");
/* read the response */
result = GET_FTP_RESULT(stream);
if (mode[0] == 'r') {
char *sizestr;
/* when reading file, it must exist */
if (result > 299 || result < 200) {
errno = ENOENT;
goto errexit;
}
sizestr = strchr(tmp_line, ' ');
if (sizestr) {
sizestr++;
file_size = atoi(sizestr);
php_stream_notify_file_size(context, file_size, tmp_line, result);
}
} else {
/* when writing file, it must NOT exist */
if (result <= 299 && result >= 200) {
errno = EEXIST;
goto errexit;
}
}
/* set up the passive connection */
/* We try EPSV first, needed for IPv6 and works on some IPv4 servers */
php_stream_write_string(stream, "EPSV\r\n");
result = GET_FTP_RESULT(stream);
/* check if we got a 229 response */
if (result != 229) {
/* EPSV failed, let's try PASV */
php_stream_write_string(stream, "PASV\r\n");
result = GET_FTP_RESULT(stream);
/* make sure we got a 227 response */
if (result != 227)
goto errexit;
/* parse pasv command (129, 80, 95, 25, 13, 221) */
tpath = tmp_line;
/* skip over the "227 Some message " part */
for (tpath += 4; *tpath && !isdigit((int) *tpath); tpath++);
if (!*tpath)
goto errexit;
/* skip over the host ip, to get the port */
hoststart = tpath;
for (i = 0; i < 4; i++) {
for (; isdigit((int) *tpath); tpath++);
if (*tpath != ',')
goto errexit;
*tpath='.';
tpath++;
}
tpath[-1] = '\0';
memcpy(ip, hoststart, sizeof(ip));
ip[sizeof(ip)-1] = '\0';
hoststart = ip;
/* pull out the MSB of the port */
portno = (unsigned short) strtoul(tpath, &ttpath, 10) * 256;
if (ttpath == NULL) {
/* didn't get correct response from PASV */
goto errexit;
}
tpath = ttpath;
if (*tpath != ',')
goto errexit;
tpath++;
/* pull out the LSB of the port */
portno += (unsigned short) strtoul(tpath, &ttpath, 10);
} else {
/* parse epsv command (|||6446|) */
for (i = 0, tpath = tmp_line + 4; *tpath; tpath++) {
if (*tpath == '|') {
i++;
if (i == 3)
break;
}
}
if (i < 3)
goto errexit;
/* pull out the port */
portno = (unsigned short) strtoul(tpath + 1, &ttpath, 10);
}
if (ttpath == NULL) {
/* didn't get correct response from EPSV/PASV */
goto errexit;
}
if (mode[0] == 'r') {
/* retrieve file */
php_stream_write_string(stream, "RETR ");
} else {
/* store file */
php_stream_write_string(stream, "STOR ");
}
if (resource->path != NULL) {
php_stream_write_string(stream, resource->path);
} else {
php_stream_write_string(stream, "/");
}
php_stream_write_string(stream, "\r\n");
/* open the data channel */
if (hoststart == NULL) {
hoststart = resource->host;
}
datastream = php_stream_sock_open_host(hoststart, portno, SOCK_STREAM, 0, 0);
if (datastream == NULL) {
goto errexit;
}
result = GET_FTP_RESULT(stream);
if (result != 150) {
/* Could not retrieve or send the file
* this data will only be sent to us after connection on the data port was initiated.
*/
php_stream_close(datastream);
datastream = NULL;
goto errexit;
}
/* close control connection if not in ssl mode */
if (!use_ssl) {
php_stream_write_string(stream, "QUIT\r\n");
php_stream_close(stream);
stream = NULL;
}
php_stream_context_set(datastream, context);
php_stream_notify_progress_init(context, 0, file_size);
#if HAVE_OPENSSL_EXT
if (use_ssl_on_data && php_stream_sock_ssl_activate_with_method(datastream, 1, SSLv23_method(), reuseid TSRMLS_CC) == FAILURE) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Unable to activate SSL mode");
php_stream_close(datastream);
datastream = NULL;
goto errexit;
}
#endif
/* remember control stream */
datastream->wrapperdata = (zval *)stream;
php_url_free(resource);
return datastream;
errexit:
php_url_free(resource);
if (stream) {
php_stream_notify_error(context, PHP_STREAM_NOTIFY_FAILURE, tmp_line, result);
php_stream_close(stream);
}
if (tmp_line[0] != '\0')
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "FTP server reports %s", tmp_line);
return NULL;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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