bitlbee - personal fork of github.com/bitlbee/bitlbee

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author	Wilmer van der Gaast <wilmer@gaast.net>	2010-12-06 00:03:49 +0000
committer	Wilmer van der Gaast <wilmer@gaast.net>	2010-12-06 00:03:49 +0000
commit	d88c92a40438e0ac8e897beb3ead44c4404050b3 (patch)
tree	8dd4e41d7490e49501386e57cb281463b9bce7b1 /protocols/oscar
parent	a429907207d5b8b05463c72a9b8c880ba03ad921 (diff)

First bits of CTCP support to contacts. (Try /CTCP VERSION on a Jabber

contact.)

Diffstat (limited to 'protocols/oscar')

0 files changed, 0 insertions, 0 deletions

/********************************************************************\ * BitlBee -- An IRC to other IM-networks gateway * * * * Copyright 2002-2005 Wilmer van der Gaast and others * \********************************************************************/ /* HTTP(S) module */ /* This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License with the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <string.h> #include <stdio.h> #include "http_client.h" #include "url.h" #include "sock.h" static gboolean http_connected( gpointer data, int source, b_input_condition cond ); static gboolean http_ssl_connected( gpointer data, void *source, b_input_condition cond ); static gboolean http_incoming_data( gpointer data, int source, b_input_condition cond ); static void http_free( struct http_request *req ); struct http_request *http_dorequest( char *host, int port, int ssl, char *request, http_input_function func, gpointer data ) { struct http_request *req; int error = 0; req = g_new0( struct http_request, 1 ); if( ssl ) { req->ssl = ssl_connect( host, port, http_ssl_connected, req ); if( req->ssl == NULL ) error = 1; } else { req->fd = proxy_connect( host, port, http_connected, req ); if( req->fd < 0 ) error = 1; } if( error ) { http_free( req ); return NULL; } req->func = func; req->data = data; req->request = g_strdup( request ); req->request_length = strlen( request ); req->redir_ttl = 3; return( req ); } struct http_request *http_dorequest_url( char *url_string, http_input_function func, gpointer data ) { url_t *url = g_new0( url_t, 1 ); char *request; void *ret; if( !url_set( url, url_string ) ) { g_free( url ); return NULL; } if( url->proto != PROTO_HTTP && url->proto != PROTO_HTTPS ) { g_free( url ); return NULL; } request = g_strdup_printf( "GET %s HTTP/1.0\r\n" "Host: %s\r\n" "User-Agent: BitlBee " BITLBEE_VERSION " " ARCH "/" CPU "\r\n" "\r\n", url->file, url->host ); ret = http_dorequest( url->host, url->port, url->proto == PROTO_HTTPS, request, func, data ); g_free( url ); g_free( request ); return ret; } /* This one is actually pretty simple... Might get more calls if we can't write the whole request at once. */ static gboolean http_connected( gpointer data, int source, b_input_condition cond ) { struct http_request *req = data; int st; if( source < 0 ) goto error; if( req->inpa > 0 ) b_event_remove( req->inpa ); sock_make_nonblocking( req->fd ); if( req->ssl ) { st = ssl_write( req->ssl, req->request + req->bytes_written, req->request_length - req->bytes_written ); if( st < 0 ) { if( ssl_errno != SSL_AGAIN ) { ssl_disconnect( req->ssl ); goto error; } } } else { st = write( source, req->request + req->bytes_written, req->request_length - req->bytes_written ); if( st < 0 ) { if( !sockerr_again() ) { closesocket( req->fd ); goto error; } } } if( st > 0 ) req->bytes_written += st; if( req->bytes_written < req->request_length ) req->inpa = b_input_add( source, req->ssl ? ssl_getdirection( req->ssl ) : B_EV_IO_WRITE, http_connected, req ); else req->inpa = b_input_add( source, B_EV_IO_READ, http_incoming_data, req ); return FALSE; error: req->status_string = g_strdup( "Error while writing HTTP request" ); req->func( req ); http_free( req ); return FALSE; } static gboolean http_ssl_connected( gpointer data, void *source, b_input_condition cond ) { struct http_request *req = data; if( source == NULL ) return http_connected( data, -1, cond ); req->fd = ssl_getfd( source ); return http_connected( data, req->fd, cond ); } static gboolean http_incoming_data( gpointer data, int source, b_input_condition cond ) { struct http_request *req = data; int evil_server = 0; char buffer[2048]; char *end1, *end2; int st; if( req->inpa > 0 ) b_event_remove( req->inpa ); if( req->ssl ) { st = ssl_read( req->ssl, buffer, sizeof( buffer ) ); if( st < 0 ) { if( ssl_errno != SSL_AGAIN ) { /* goto cleanup; */ /* YAY! We have to deal with crappy Microsoft servers that LOVE to send invalid TLS packets that abort connections! \o/ */ goto got_reply; } } else if( st == 0 ) { goto got_reply; } } else { st = read( req->fd, buffer, sizeof( buffer ) ); if( st < 0 ) { if( !sockerr_again() ) { req->status_string = g_strdup( strerror( errno ) ); goto cleanup; } } else if( st == 0 ) { goto got_reply; } } if( st > 0 ) { req->reply_headers = g_realloc( req->reply_headers, req->bytes_read + st + 1 ); memcpy( req->reply_headers + req->bytes_read, buffer, st ); req->bytes_read += st; } /* There will be more! */ req->inpa = b_input_add( req->fd, req->ssl ? ssl_getdirection( req->ssl ) : B_EV_IO_READ, http_incoming_data, req ); return FALSE; got_reply: /* Maybe if the webserver is overloaded, or when there's bad SSL support... */ if( req->bytes_read == 0 ) { req->status_string = g_strdup( "Empty HTTP reply" ); goto cleanup; } /* Zero termination is very convenient. */ req->reply_headers[req->bytes_read] = 0; /* Find the separation between headers and body, and keep stupid webservers in mind. */ end1 = strstr( req->reply_headers, "\r\n\r\n" ); end2 = strstr( req->reply_headers, "\n\n" ); if( end2 && end2 < end1 ) { end1 = end2 + 1; evil_server = 1; } else if( end1 ) { end1 += 2; } else { req->status_string = g_strdup( "Malformed HTTP reply" ); goto cleanup; } *end1 = 0; if( evil_server ) req->reply_body = end1 + 1; else req->reply_body = end1 + 2; req->body_size = req->reply_headers + req->bytes_read - req->reply_body; if( ( end1 = strchr( req->reply_headers, ' ' ) ) != NULL ) { if( sscanf( end1 + 1, "%d", &req->status_code ) != 1 ) { req->status_string = g_strdup( "Can't parse status code" ); req->status_code = -1; } else { char *eol; if( evil_server ) eol = strchr( end1, '\n' ); else eol = strchr( end1, '\r' ); req->status_string = g_strndup( end1 + 1, eol - end1 - 1 ); /* Just to be sure... */ if( ( eol = strchr( req->status_string, '\r' ) ) ) *eol = 0; if( ( eol = strchr( req->status_string, '\n' ) ) ) *eol = 0; } } else { req->status_string = g_strdup( "Can't locate status code" ); req->status_code = -1; } if( ( req->status_code == 301 || req->status_code == 302 ) && req->redir_ttl-- > 0 ) { char *loc, *new_request, *new_host; int error = 0, new_port, new_proto; /* We might fill it again, so let's not leak any memory. */ g_free( req->status_string ); req->status_string = NULL; loc = strstr( req->reply_headers, "\nLocation: " ); if( loc == NULL ) /* We can't handle this redirect... */ { req->status_string = g_strdup( "Can't locate Location: header" ); goto cleanup; } loc += 11; while( *loc == ' ' ) loc ++; /* TODO/FIXME: Possibly have to handle relative redirections, and rewrite Host: headers. Not necessary for now, it's enough for passport authentication like this. */ if( *loc == '/' ) { /* Just a different pathname... */ /* Since we don't cache the servername, and since we don't need this yet anyway, I won't implement it. */ req->status_string = g_strdup( "Can't handle recursive redirects" ); goto cleanup; } else { /* A whole URL */ url_t *url; char *s; s = strstr( loc, "\r\n" ); if( s == NULL ) goto cleanup; url = g_new0( url_t, 1 ); *s = 0; if( !url_set( url, loc ) ) { req->status_string = g_strdup( "Malformed redirect URL" ); g_free( url ); goto cleanup; } /* Okay, this isn't fun! We have to rebuild the request... :-( */ new_request = g_malloc( req->request_length + strlen( url->file ) ); /* So, now I just allocated enough memory, so I'm going to use strcat(), whether you like it or not. :-) */ sprintf( new_request, "GET %s HTTP/1.0", url->file ); s = strstr( req->request, "\r\n" ); if( s == NULL ) { req->status_string = g_strdup( "Error while rebuilding request string" ); g_free( new_request ); g_free( url ); goto cleanup; } strcat( new_request, s ); new_host = g_strdup( url->host ); new_port = url->port; new_proto = url->proto; g_free( url ); } if( req->ssl ) ssl_disconnect( req->ssl ); else closesocket( req->fd ); req->fd = -1; req->ssl = NULL; if( new_proto == PROTO_HTTPS ) { req->ssl = ssl_connect( new_host, new_port, http_ssl_connected, req ); if( req->ssl == NULL ) error = 1; } else { req->fd = proxy_connect( new_host, new_port, http_connected, req ); if( req->fd < 0 ) error = 1; } g_free( new_host ); if( error ) { req->status_string = g_strdup( "Connection problem during redirect" ); g_free( new_request ); goto cleanup; } g_free( req->request ); g_free( req->reply_headers ); req->request = new_request; req->request_length = strlen( new_request ); req->bytes_read = req->bytes_written = req->inpa = 0; req->reply_headers = req->reply_body = NULL; return FALSE; } /* Assume that a closed connection means we're finished, this indeed breaks with keep-alive connections and faulty connections. */ req->finished = 1; cleanup: if( req->ssl ) ssl_disconnect( req->ssl ); else closesocket( req->fd ); req->func( req ); http_free( req ); return FALSE; } static void http_free( struct http_request *req ) { g_free( req->request ); g_free( req->reply_headers ); g_free( req->status_string ); g_free( req ); }


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