[a2b99ec] | 1 | /********************************************************************\ |
---|
| 2 | * BitlBee -- An IRC to other IM-networks gateway * |
---|
| 3 | * * |
---|
| 4 | * Copyright 2008 Uli Meis * |
---|
| 5 | * Copyright 2006 Marijn Kruisselbrink and others * |
---|
| 6 | \********************************************************************/ |
---|
| 7 | |
---|
| 8 | /* MSN module - File transfer support */ |
---|
| 9 | |
---|
| 10 | /* |
---|
| 11 | This program is free software; you can redistribute it and/or modify |
---|
| 12 | it under the terms of the GNU General Public License as published by |
---|
| 13 | the Free Software Foundation; either version 2 of the License, or |
---|
| 14 | (at your option) any later version. |
---|
| 15 | |
---|
| 16 | This program is distributed in the hope that it will be useful, |
---|
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 19 | GNU General Public License for more details. |
---|
| 20 | |
---|
| 21 | You should have received a copy of the GNU General Public License with |
---|
| 22 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
---|
| 23 | if not, write to the Free Software Foundation, Inc., 59 Temple Place, |
---|
| 24 | Suite 330, Boston, MA 02111-1307 USA |
---|
| 25 | */ |
---|
| 26 | |
---|
| 27 | #include "bitlbee.h" |
---|
| 28 | #include "invitation.h" |
---|
| 29 | #include "msn.h" |
---|
| 30 | |
---|
| 31 | #ifdef debug |
---|
| 32 | #undef debug |
---|
| 33 | #endif |
---|
| 34 | #define debug(msg...) log_message( LOGLVL_INFO, msg ) |
---|
| 35 | |
---|
| 36 | static void msn_ftp_free( file_transfer_t *file ); |
---|
| 37 | static void msn_ftpr_accept( file_transfer_t *file ); |
---|
| 38 | static void msn_ftp_finished( file_transfer_t *file ); |
---|
| 39 | static void msn_ftp_canceled( file_transfer_t *file, char *reason ); |
---|
| 40 | static gboolean msn_ftpr_write_request( file_transfer_t *file ); |
---|
| 41 | |
---|
| 42 | static gboolean msn_ftp_connected( gpointer data, gint fd, b_input_condition cond ); |
---|
| 43 | static gboolean msn_ftp_read( gpointer data, gint fd, b_input_condition cond ); |
---|
| 44 | gboolean msn_ftps_write( file_transfer_t *file, char *buffer, unsigned int len ); |
---|
| 45 | |
---|
| 46 | /* |
---|
| 47 | * Vararg wrapper for imcb_file_canceled(). |
---|
| 48 | */ |
---|
| 49 | gboolean msn_ftp_abort( file_transfer_t *file, char *format, ... ) |
---|
| 50 | { |
---|
| 51 | va_list params; |
---|
| 52 | va_start( params, format ); |
---|
| 53 | char error[128]; |
---|
| 54 | |
---|
| 55 | if( vsnprintf( error, 128, format, params ) < 0 ) |
---|
| 56 | sprintf( error, "internal error parsing error string (BUG)" ); |
---|
| 57 | va_end( params ); |
---|
| 58 | imcb_file_canceled( file, error ); |
---|
| 59 | return FALSE; |
---|
| 60 | } |
---|
| 61 | |
---|
| 62 | /* very useful */ |
---|
| 63 | #define ASSERTSOCKOP(op, msg) \ |
---|
| 64 | if( (op) == -1 ) \ |
---|
| 65 | return msn_ftp_abort( file , msg ": %s", strerror( errno ) ); |
---|
| 66 | |
---|
| 67 | /* |
---|
| 68 | * Creates a listening socket and returns its address in host, port. |
---|
| 69 | */ |
---|
| 70 | gboolean msn_ftp_listen( msn_filetransfer_t *msn_file, char *host, char *port ) |
---|
| 71 | { |
---|
| 72 | file_transfer_t *file = msn_file->dcc; |
---|
| 73 | int fd,gret; |
---|
| 74 | char hostname[ HOST_NAME_MAX + 1 ]; |
---|
| 75 | struct addrinfo hints, *rp; |
---|
| 76 | struct sockaddr_storage saddrst, *saddr = &saddrst; |
---|
| 77 | socklen_t ssize = sizeof( struct sockaddr_storage ); |
---|
| 78 | |
---|
| 79 | /* won't be long till someone asks for this to be configurable :) */ |
---|
| 80 | |
---|
| 81 | ASSERTSOCKOP( gethostname( hostname, sizeof( hostname ) ), "gethostname()" ); |
---|
| 82 | |
---|
| 83 | memset( &hints, 0, sizeof( struct addrinfo ) ); |
---|
| 84 | hints.ai_socktype = SOCK_STREAM; |
---|
| 85 | hints.ai_flags = AI_NUMERICSERV; |
---|
| 86 | |
---|
| 87 | if ( ( gret = getaddrinfo( hostname, "0", &hints, &rp ) ) != 0 ) |
---|
| 88 | return msn_ftp_abort( file, "getaddrinfo() failed: %s", gai_strerror( gret ) ); |
---|
| 89 | |
---|
| 90 | memcpy( saddr, rp->ai_addr, rp->ai_addrlen ); |
---|
| 91 | |
---|
| 92 | ASSERTSOCKOP( fd = msn_file->fd = socket( saddr->ss_family, SOCK_STREAM, 0 ), "Opening socket" ); |
---|
| 93 | |
---|
| 94 | ASSERTSOCKOP( bind( fd, ( struct sockaddr *)saddr, rp->ai_addrlen ), "Binding socket" ); |
---|
| 95 | |
---|
| 96 | freeaddrinfo( rp ); |
---|
| 97 | |
---|
| 98 | ASSERTSOCKOP( listen( fd, 1 ), "Making socket listen" ); |
---|
| 99 | |
---|
| 100 | if ( !inet_ntop( saddr->ss_family, saddr->ss_family == AF_INET ? |
---|
| 101 | ( void * )&( ( struct sockaddr_in * ) saddr )->sin_addr.s_addr : ( void * )&( ( struct sockaddr_in6 * ) saddr )->sin6_addr.s6_addr |
---|
| 102 | , host, INET6_ADDRSTRLEN ) ) |
---|
| 103 | return msn_ftp_abort( file, "inet_ntop failed on listening socket" ); |
---|
| 104 | |
---|
| 105 | ASSERTSOCKOP( getsockname( fd, ( struct sockaddr *)saddr, &ssize ), "Getting socket name" ); |
---|
| 106 | |
---|
| 107 | if( saddr->ss_family == AF_INET ) |
---|
| 108 | sprintf( port, "%d", ntohs( ( ( struct sockaddr_in *) saddr )->sin_port ) ); |
---|
| 109 | else |
---|
| 110 | sprintf( port, "%d", ntohs( ( ( struct sockaddr_in6 *) saddr )->sin6_port ) ); |
---|
| 111 | |
---|
| 112 | return TRUE; |
---|
| 113 | } |
---|
| 114 | |
---|
| 115 | void msn_ftp_invitation_cmd( struct im_connection *ic, char *who, int cookie, char *icmd, |
---|
| 116 | char *trailer ) |
---|
| 117 | { |
---|
| 118 | struct msn_message *m = g_new0( struct msn_message, 1 ); |
---|
| 119 | |
---|
| 120 | m->text = g_strdup_printf( "%s" |
---|
| 121 | "Invitation-Command: %s\r\n" |
---|
| 122 | "Invitation-Cookie: %u\r\n" |
---|
| 123 | "%s", |
---|
| 124 | MSN_INVITE_HEADERS, |
---|
| 125 | icmd, |
---|
| 126 | cookie, |
---|
| 127 | trailer); |
---|
| 128 | |
---|
| 129 | m->who = g_strdup( who ); |
---|
| 130 | |
---|
| 131 | msn_sb_write_msg( ic, m ); |
---|
| 132 | } |
---|
| 133 | |
---|
| 134 | void msn_ftp_cancel_invite( struct im_connection *ic, char *who, int cookie, char *code ) |
---|
| 135 | { |
---|
| 136 | char buf[64]; |
---|
| 137 | |
---|
| 138 | g_snprintf( buf, sizeof( buf ), "Cancel-Code: %s\r\n", code ); |
---|
| 139 | msn_ftp_invitation_cmd( ic, who, cookie, "CANCEL", buf ); |
---|
| 140 | } |
---|
| 141 | |
---|
| 142 | void msn_ftp_transfer_request( struct im_connection *ic, file_transfer_t *file, char *who ) |
---|
| 143 | { |
---|
| 144 | unsigned int cookie = time( NULL ); /* TODO: randomize */ |
---|
| 145 | char buf[2048]; |
---|
| 146 | |
---|
| 147 | msn_filetransfer_t *msn_file = g_new0( msn_filetransfer_t, 1 ); |
---|
| 148 | file->data = msn_file; |
---|
| 149 | file->free = msn_ftp_free; |
---|
| 150 | file->canceled = msn_ftp_canceled; |
---|
| 151 | file->write = msn_ftps_write; |
---|
| 152 | msn_file->md = ic->proto_data; |
---|
| 153 | msn_file->invite_cookie = cookie; |
---|
| 154 | msn_file->handle = g_strdup( who ); |
---|
| 155 | msn_file->dcc = file; |
---|
| 156 | msn_file->md->filetransfers = g_slist_prepend( msn_file->md->filetransfers, msn_file->dcc ); |
---|
| 157 | msn_file->fd = -1; |
---|
| 158 | msn_file->sbufpos = 3; |
---|
| 159 | |
---|
| 160 | g_snprintf( buf, sizeof( buf ), |
---|
| 161 | "Application-Name: File Transfer\r\n" |
---|
| 162 | "Application-GUID: {5D3E02AB-6190-11d3-BBBB-00C04F795683}\r\n" |
---|
| 163 | "Application-File: %s\r\n" |
---|
| 164 | "Application-FileSize: %zd\r\n", |
---|
| 165 | file->file_name, |
---|
| 166 | file->file_size); |
---|
| 167 | |
---|
| 168 | msn_ftp_invitation_cmd( msn_file->md->ic, msn_file->handle, cookie, "INVITE", buf ); |
---|
| 169 | |
---|
| 170 | imcb_file_recv_start( file ); |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | void msn_invitation_invite( struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen ) |
---|
| 174 | { |
---|
| 175 | char *itype = msn_findheader( body, "Application-GUID:", blen ); |
---|
| 176 | char *name, *size, *invitecookie, *reject = NULL; |
---|
| 177 | user_t *u; |
---|
| 178 | size_t isize; |
---|
| 179 | file_transfer_t *file; |
---|
| 180 | |
---|
| 181 | if( !itype || strcmp( itype, "{5D3E02AB-6190-11d3-BBBB-00C04F795683}" ) != 0 ) { |
---|
| 182 | /* Don't know what that is - don't care */ |
---|
| 183 | char *iname = msn_findheader( body, "Application-Name:", blen ); |
---|
| 184 | imcb_log( sb->ic, "Received unknown MSN invitation %s (%s) from %s", |
---|
| 185 | itype ? : "with no GUID", iname ? iname : "no application name", handle ); |
---|
| 186 | g_free( iname ); |
---|
| 187 | reject = "REJECT_NOT_INSTALLED"; |
---|
| 188 | } else if ( |
---|
| 189 | !( name = msn_findheader( body, "Application-File:", blen )) || |
---|
| 190 | !( size = msn_findheader( body, "Application-FileSize:", blen )) || |
---|
| 191 | !( invitecookie = msn_findheader( body, "Invitation-Cookie:", blen)) || |
---|
| 192 | !( isize = atoll( size ) ) ) { |
---|
| 193 | imcb_log( sb->ic, "Received corrupted transfer request from %s" |
---|
| 194 | "(name=%s, size=%s, invitecookie=%s)", |
---|
| 195 | handle, name, size, invitecookie ); |
---|
| 196 | reject = "REJECT"; |
---|
| 197 | } else if ( !( u = user_findhandle( sb->ic, handle ) ) ) { |
---|
| 198 | imcb_log( sb->ic, "Error in parsing transfer request, User '%s'" |
---|
| 199 | "is not in contact list", handle ); |
---|
| 200 | reject = "REJECT"; |
---|
| 201 | } else if ( !( file = imcb_file_send_start( sb->ic, handle, name, isize ) ) ) { |
---|
| 202 | imcb_log( sb->ic, "Error initiating transfer for request from %s for %s", |
---|
| 203 | handle, name ); |
---|
| 204 | reject = "REJECT"; |
---|
| 205 | } else { |
---|
| 206 | msn_filetransfer_t *msn_file = g_new0( msn_filetransfer_t, 1 ); |
---|
| 207 | file->data = msn_file; |
---|
| 208 | file->accept = msn_ftpr_accept; |
---|
| 209 | file->free = msn_ftp_free; |
---|
| 210 | file->finished = msn_ftp_finished; |
---|
| 211 | file->canceled = msn_ftp_canceled; |
---|
| 212 | file->write_request = msn_ftpr_write_request; |
---|
| 213 | msn_file->md = sb->ic->proto_data; |
---|
| 214 | msn_file->invite_cookie = cookie; |
---|
| 215 | msn_file->handle = g_strdup( handle ); |
---|
| 216 | msn_file->dcc = file; |
---|
| 217 | msn_file->md->filetransfers = g_slist_prepend( msn_file->md->filetransfers, msn_file->dcc ); |
---|
| 218 | msn_file->fd = -1; |
---|
| 219 | } |
---|
| 220 | |
---|
| 221 | if( reject ) |
---|
| 222 | msn_ftp_cancel_invite( sb->ic, sb->who, cookie, reject ); |
---|
| 223 | |
---|
| 224 | g_free( name ); |
---|
| 225 | g_free( size ); |
---|
| 226 | g_free( invitecookie ); |
---|
| 227 | g_free( itype ); |
---|
| 228 | } |
---|
| 229 | |
---|
| 230 | msn_filetransfer_t* msn_find_filetransfer( struct msn_data *md, unsigned int cookie, char *handle ) |
---|
| 231 | { |
---|
| 232 | GSList *l; |
---|
| 233 | |
---|
| 234 | for( l = md->filetransfers; l; l = l->next ) { |
---|
| 235 | msn_filetransfer_t *file = ( (file_transfer_t*) l->data )->data; |
---|
| 236 | if( file->invite_cookie == cookie && strcmp( handle, file->handle ) == 0 ) { |
---|
| 237 | return file; |
---|
| 238 | } |
---|
| 239 | } |
---|
| 240 | return NULL; |
---|
| 241 | } |
---|
| 242 | |
---|
| 243 | gboolean msn_ftps_connected( gpointer data, gint fd, b_input_condition cond ) |
---|
| 244 | { |
---|
| 245 | file_transfer_t *file = data; |
---|
| 246 | msn_filetransfer_t *msn_file = file->data; |
---|
| 247 | struct sockaddr_storage clt_addr; |
---|
| 248 | socklen_t ssize = sizeof( clt_addr ); |
---|
| 249 | |
---|
| 250 | debug( "Connected to MSNFTP client" ); |
---|
| 251 | |
---|
| 252 | ASSERTSOCKOP( msn_file->fd = accept( fd, (struct sockaddr *) &clt_addr, &ssize ), "Accepting connection" ); |
---|
| 253 | |
---|
| 254 | closesocket( fd ); |
---|
| 255 | fd = msn_file->fd; |
---|
| 256 | sock_make_nonblocking( fd ); |
---|
| 257 | |
---|
| 258 | msn_file->r_event_id = b_input_add( fd, GAIM_INPUT_READ, msn_ftp_read, file ); |
---|
| 259 | |
---|
| 260 | return FALSE; |
---|
| 261 | } |
---|
| 262 | |
---|
| 263 | void msn_invitations_accept( msn_filetransfer_t *msn_file, struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen ) |
---|
| 264 | { |
---|
| 265 | file_transfer_t *file = msn_file->dcc; |
---|
| 266 | char buf[1024]; |
---|
| 267 | unsigned int acookie = time ( NULL ); |
---|
| 268 | char host[INET6_ADDRSTRLEN]; |
---|
| 269 | char port[6]; |
---|
| 270 | |
---|
| 271 | msn_file->auth_cookie = acookie; |
---|
| 272 | |
---|
| 273 | if( !msn_ftp_listen( msn_file, host, port ) ) |
---|
| 274 | return; |
---|
| 275 | |
---|
| 276 | msn_file->r_event_id = b_input_add( msn_file->fd, GAIM_INPUT_READ, msn_ftps_connected, file ); |
---|
| 277 | |
---|
| 278 | g_snprintf( buf, sizeof( buf ), |
---|
| 279 | "IP-Address: %s\r\n" |
---|
| 280 | "Port: %s\r\n" |
---|
| 281 | "AuthCookie: %d\r\n" |
---|
| 282 | "Launch-Application: FALSE\r\n" |
---|
| 283 | "Request-Data: IP-Address:\r\n\r\n", |
---|
| 284 | host, |
---|
| 285 | port, |
---|
| 286 | msn_file->auth_cookie ); |
---|
| 287 | |
---|
| 288 | msn_ftp_invitation_cmd( msn_file->md->ic, handle, msn_file->invite_cookie, "ACCEPT", buf ); |
---|
| 289 | } |
---|
| 290 | |
---|
| 291 | void msn_invitationr_accept( msn_filetransfer_t *msn_file, struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen ) { |
---|
| 292 | file_transfer_t *file = msn_file->dcc; |
---|
| 293 | char *authcookie, *ip, *port; |
---|
| 294 | |
---|
| 295 | if( !( authcookie = msn_findheader( body, "AuthCookie:", blen ) ) || |
---|
| 296 | !( ip = msn_findheader( body, "IP-Address:", blen ) ) || |
---|
| 297 | !( port = msn_findheader( body, "Port:", blen ) ) ) { |
---|
| 298 | msn_ftp_abort( file, "Received invalid accept reply" ); |
---|
| 299 | } else if( |
---|
| 300 | ( msn_file->fd = proxy_connect( ip, atoi( port ), msn_ftp_connected, file ) ) |
---|
| 301 | < 0 ) { |
---|
| 302 | msn_ftp_abort( file, "Error connecting to MSN client" ); |
---|
| 303 | } else |
---|
| 304 | msn_file->auth_cookie = strtoul( authcookie, NULL, 10 ); |
---|
| 305 | |
---|
| 306 | g_free( authcookie ); |
---|
| 307 | g_free( ip ); |
---|
| 308 | g_free( port ); |
---|
| 309 | } |
---|
| 310 | |
---|
| 311 | void msn_invitation_accept( struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen ) |
---|
| 312 | { |
---|
| 313 | msn_filetransfer_t *msn_file = msn_find_filetransfer( sb->ic->proto_data, cookie, handle ); |
---|
| 314 | file_transfer_t *file = msn_file ? msn_file->dcc : NULL; |
---|
| 315 | |
---|
| 316 | if( !msn_file ) |
---|
| 317 | imcb_log( sb->ic, "Received invitation ACCEPT message for unknown invitation (already aborted?)" ); |
---|
| 318 | else if( file->sending ) |
---|
| 319 | msn_invitations_accept( msn_file, sb, handle, cookie, body, blen ); |
---|
| 320 | else |
---|
| 321 | msn_invitationr_accept( msn_file, sb, handle, cookie, body, blen ); |
---|
| 322 | } |
---|
| 323 | |
---|
| 324 | void msn_invitation_cancel( struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen ) |
---|
| 325 | { |
---|
| 326 | msn_filetransfer_t *msn_file = msn_find_filetransfer( sb->ic->proto_data, cookie, handle ); |
---|
| 327 | |
---|
| 328 | if( !msn_file ) |
---|
| 329 | imcb_log( sb->ic, "Received invitation CANCEL message for unknown invitation (already aborted?)" ); |
---|
| 330 | else |
---|
| 331 | msn_ftp_abort( msn_file->dcc, msn_findheader( body, "Cancel-Code:", blen ) ); |
---|
| 332 | } |
---|
| 333 | |
---|
| 334 | int msn_ftp_write( file_transfer_t *file, char *format, ... ) |
---|
| 335 | { |
---|
| 336 | msn_filetransfer_t *msn_file = file->data; |
---|
| 337 | va_list params; |
---|
| 338 | int st; |
---|
| 339 | char *s; |
---|
| 340 | |
---|
| 341 | va_start( params, format ); |
---|
| 342 | s = g_strdup_vprintf( format, params ); |
---|
| 343 | va_end( params ); |
---|
| 344 | |
---|
| 345 | st = write( msn_file->fd, s, strlen( s ) ); |
---|
| 346 | if( st != strlen( s ) ) |
---|
| 347 | return msn_ftp_abort( file, "Error sending data over MSNFTP connection: %s", |
---|
| 348 | strerror( errno ) ); |
---|
| 349 | |
---|
| 350 | g_free( s ); |
---|
| 351 | return 1; |
---|
| 352 | } |
---|
| 353 | |
---|
| 354 | gboolean msn_ftp_connected( gpointer data, gint fd, b_input_condition cond ) |
---|
| 355 | { |
---|
| 356 | file_transfer_t *file = data; |
---|
| 357 | msn_filetransfer_t *msn_file = file->data; |
---|
| 358 | |
---|
| 359 | debug( "Connected to MSNFTP server, starting authentication" ); |
---|
| 360 | if( !msn_ftp_write( file, "VER MSNFTP\r\n" ) ) |
---|
| 361 | return FALSE; |
---|
| 362 | |
---|
| 363 | sock_make_nonblocking( msn_file->fd ); |
---|
| 364 | msn_file->r_event_id = b_input_add( msn_file->fd, GAIM_INPUT_READ, msn_ftp_read, file ); |
---|
| 365 | |
---|
| 366 | return FALSE; |
---|
| 367 | } |
---|
| 368 | |
---|
| 369 | gboolean msn_ftp_handle_command( file_transfer_t *file, char* line ) |
---|
| 370 | { |
---|
| 371 | msn_filetransfer_t *msn_file = file->data; |
---|
| 372 | char **cmd = msn_linesplit( line ); |
---|
| 373 | int count = 0; |
---|
| 374 | if( cmd[0] ) while( cmd[++count] ); |
---|
| 375 | |
---|
| 376 | if( count < 1 ) |
---|
| 377 | return msn_ftp_abort( file, "Missing command in MSNFTP communication" ); |
---|
| 378 | |
---|
| 379 | if( strcmp( cmd[0], "VER" ) == 0 ) { |
---|
| 380 | if( strcmp( cmd[1], "MSNFTP" ) != 0 ) |
---|
| 381 | return msn_ftp_abort( file, "Unsupported filetransfer protocol: %s", cmd[1] ); |
---|
| 382 | if( file->sending ) |
---|
| 383 | msn_ftp_write( file, "VER MSNFTP\r\n" ); |
---|
| 384 | else |
---|
| 385 | msn_ftp_write( file, "USR %s %u\r\n", msn_file->md->ic->acc->user, msn_file->auth_cookie ); |
---|
| 386 | } else if( strcmp( cmd[0], "FIL" ) == 0 ) { |
---|
| 387 | if( strtoul( cmd[1], NULL, 10 ) != file->file_size ) |
---|
| 388 | return msn_ftp_abort( file, "FIL reply contains a different file size than the size in the invitation" ); |
---|
| 389 | msn_ftp_write( file, "TFR\r\n" ); |
---|
| 390 | msn_file->status |= MSN_TRANSFER_RECEIVING; |
---|
| 391 | } else if( strcmp( cmd[0], "USR" ) == 0 ) { |
---|
| 392 | if( ( strcmp( cmd[1], msn_file->handle ) != 0 ) || |
---|
| 393 | ( strtoul( cmd[2], NULL, 10 ) != msn_file->auth_cookie ) ) |
---|
| 394 | msn_ftp_abort( file, "Authentication failed. " |
---|
| 395 | "Expected handle: %s (got %s), cookie: %u (got %s)", |
---|
| 396 | msn_file->handle, cmd[1], |
---|
| 397 | msn_file->auth_cookie, cmd[2] ); |
---|
| 398 | msn_ftp_write( file, "FIL %zu\r\n", file->file_size); |
---|
| 399 | } else if( strcmp( cmd[0], "TFR" ) == 0 ) { |
---|
| 400 | file->write_request( file ); |
---|
| 401 | } else if( strcmp( cmd[0], "BYE" ) == 0 ) { |
---|
| 402 | unsigned int retcode = count > 1 ? atoi(cmd[1]) : 1; |
---|
| 403 | |
---|
| 404 | if( ( retcode==16777989 ) || ( retcode==16777987 ) ) |
---|
| 405 | imcb_file_finished( file ); |
---|
| 406 | else if( retcode==2147942405 ) |
---|
| 407 | imcb_file_canceled( file, "Failure: receiver is out of disk space" ); |
---|
| 408 | else if( retcode==2164261682 ) |
---|
| 409 | imcb_file_canceled( file, "Failure: receiver cancelled the transfer" ); |
---|
| 410 | else if( retcode==2164261683 ) |
---|
| 411 | imcb_file_canceled( file, "Failure: sender has cancelled the transfer" ); |
---|
| 412 | else if( retcode==2164261694 ) |
---|
| 413 | imcb_file_canceled( file, "Failure: connection is blocked" ); |
---|
| 414 | else { |
---|
| 415 | char buf[128]; |
---|
| 416 | |
---|
| 417 | sprintf( buf, "Failure: unknown BYE code: %d", retcode); |
---|
| 418 | imcb_file_canceled( file, buf ); |
---|
| 419 | } |
---|
| 420 | } else if( strcmp( cmd[0], "CCL" ) == 0 ) { |
---|
| 421 | imcb_file_canceled( file, "Failure: receiver cancelled the transfer" ); |
---|
| 422 | } else { |
---|
| 423 | msn_ftp_abort( file, "Received invalid command %s from msn client", cmd[0] ); |
---|
| 424 | } |
---|
| 425 | return TRUE; |
---|
| 426 | } |
---|
| 427 | |
---|
| 428 | gboolean msn_ftp_send( gpointer data, gint fd, b_input_condition cond ) |
---|
| 429 | { |
---|
| 430 | file_transfer_t *file = data; |
---|
| 431 | msn_filetransfer_t *msn_file = file->data; |
---|
| 432 | |
---|
| 433 | msn_file->w_event_id = 0; |
---|
| 434 | |
---|
| 435 | file->write_request( file ); |
---|
| 436 | |
---|
| 437 | return FALSE; |
---|
| 438 | } |
---|
| 439 | |
---|
| 440 | /* |
---|
| 441 | * This should only be called if we can write, so just do it. |
---|
| 442 | * Add a write watch so we can write more during the next cycle (if possible). |
---|
| 443 | * This got a bit complicated because (at least) amsn expects packets of size 2045. |
---|
| 444 | */ |
---|
| 445 | gboolean msn_ftps_write( file_transfer_t *file, char *buffer, unsigned int len ) |
---|
| 446 | { |
---|
| 447 | msn_filetransfer_t *msn_file = file->data; |
---|
| 448 | int ret, overflow; |
---|
| 449 | |
---|
| 450 | /* what we can't send now */ |
---|
| 451 | overflow = msn_file->sbufpos + len - MSNFTP_PSIZE; |
---|
| 452 | |
---|
| 453 | /* append what we can do the send buffer */ |
---|
| 454 | memcpy( msn_file->sbuf + msn_file->sbufpos, buffer, MIN( len, MSNFTP_PSIZE - msn_file->sbufpos ) ); |
---|
| 455 | msn_file->sbufpos += MIN( len, MSNFTP_PSIZE - msn_file->sbufpos ); |
---|
| 456 | |
---|
| 457 | /* if we don't have enough for a full packet and there's more wait for it */ |
---|
| 458 | if( ( msn_file->sbufpos < MSNFTP_PSIZE ) && |
---|
| 459 | ( msn_file->data_sent + msn_file->sbufpos - 3 < file->file_size ) ) { |
---|
| 460 | if( !msn_file->w_event_id ) |
---|
| 461 | msn_file->w_event_id = b_input_add( msn_file->fd, GAIM_INPUT_WRITE, msn_ftp_send, file ); |
---|
| 462 | return TRUE; |
---|
| 463 | } |
---|
| 464 | |
---|
| 465 | /* Accumulated enough data, lets send something out */ |
---|
| 466 | |
---|
| 467 | msn_file->sbuf[0] = 0; |
---|
| 468 | msn_file->sbuf[1] = ( msn_file->sbufpos - 3 ) & 0xff; |
---|
| 469 | msn_file->sbuf[2] = ( ( msn_file->sbufpos - 3 ) >> 8 ) & 0xff; |
---|
| 470 | |
---|
| 471 | ASSERTSOCKOP( ret = send( msn_file->fd, msn_file->sbuf, msn_file->sbufpos, 0 ), "Sending" ); |
---|
| 472 | |
---|
| 473 | msn_file->data_sent += ret - 3; |
---|
| 474 | |
---|
| 475 | /* TODO: this should really not be fatal */ |
---|
| 476 | if( ret < msn_file->sbufpos ) |
---|
| 477 | return msn_ftp_abort( file, "send() sent %d instead of %d (send buffer full!)", ret, msn_file->sbufpos ); |
---|
| 478 | |
---|
| 479 | msn_file->sbufpos = 3; |
---|
| 480 | |
---|
| 481 | if( overflow > 0 ) { |
---|
| 482 | while( overflow > ( MSNFTP_PSIZE - 3 ) ) { |
---|
| 483 | if( !msn_ftps_write( file, buffer + len - overflow, MSNFTP_PSIZE - 3 ) ) |
---|
| 484 | return FALSE; |
---|
| 485 | overflow -= MSNFTP_PSIZE - 3; |
---|
| 486 | } |
---|
| 487 | return msn_ftps_write( file, buffer + len - overflow, overflow ); |
---|
| 488 | } |
---|
| 489 | |
---|
| 490 | if( msn_file->data_sent == file->file_size ) { |
---|
| 491 | if( msn_file->w_event_id ) { |
---|
| 492 | b_event_remove( msn_file->w_event_id ); |
---|
| 493 | msn_file->w_event_id = 0; |
---|
| 494 | } |
---|
| 495 | } else { |
---|
| 496 | /* we might already be listening if this is data from an overflow */ |
---|
| 497 | if( !msn_file->w_event_id ) |
---|
| 498 | msn_file->w_event_id = b_input_add( msn_file->fd, GAIM_INPUT_WRITE, msn_ftp_send, file ); |
---|
| 499 | } |
---|
| 500 | |
---|
| 501 | return TRUE; |
---|
| 502 | } |
---|
| 503 | |
---|
| 504 | /* Binary part of the file transfer protocol */ |
---|
| 505 | gboolean msn_ftpr_read( file_transfer_t *file ) |
---|
| 506 | { |
---|
| 507 | msn_filetransfer_t *msn_file = file->data; |
---|
| 508 | int st; |
---|
| 509 | unsigned char buf[3]; |
---|
| 510 | |
---|
| 511 | if( msn_file->data_remaining ) { |
---|
| 512 | msn_file->r_event_id = 0; |
---|
| 513 | |
---|
| 514 | ASSERTSOCKOP( st = read( msn_file->fd, file->buffer, MIN( sizeof( file->buffer ), msn_file->data_remaining ) ), "Receiving" ); |
---|
| 515 | |
---|
| 516 | if( st == 0 ) |
---|
| 517 | return msn_ftp_abort( file, "Remote end closed connection"); |
---|
| 518 | |
---|
| 519 | msn_file->data_sent += st; |
---|
| 520 | |
---|
| 521 | msn_file->data_remaining -= st; |
---|
| 522 | |
---|
| 523 | file->write( file, file->buffer, st ); |
---|
| 524 | |
---|
| 525 | if( msn_file->data_sent >= file->file_size ) |
---|
| 526 | imcb_file_finished( file ); |
---|
| 527 | |
---|
| 528 | return FALSE; |
---|
| 529 | } else { |
---|
| 530 | ASSERTSOCKOP( st = read( msn_file->fd, buf, 1 ), "Receiving" ); |
---|
| 531 | if( st == 0 ) { |
---|
| 532 | return msn_ftp_abort( file, "read returned EOF while reading data header from msn client" ); |
---|
| 533 | } else if( buf[0] == '\r' || buf[0] == '\n' ) { |
---|
| 534 | debug( "Discarding extraneous newline" ); |
---|
| 535 | } else if( buf[0] != 0 ) { |
---|
| 536 | msn_ftp_abort( file, "Remote end canceled the transfer"); |
---|
| 537 | /* don't really care about these last 2 (should be 0,0) */ |
---|
| 538 | read( msn_file->fd, buf, 2 ); |
---|
| 539 | return FALSE; |
---|
| 540 | } else { |
---|
| 541 | unsigned int size; |
---|
| 542 | ASSERTSOCKOP( st = read( msn_file->fd, buf, 2 ), "Receiving" ); |
---|
| 543 | if( st < 2 ) |
---|
| 544 | return msn_ftp_abort( file, "read returned EOF while reading data header from msn client" ); |
---|
| 545 | |
---|
| 546 | size = buf[0] + ((unsigned int) buf[1] << 8); |
---|
| 547 | msn_file->data_remaining = size; |
---|
| 548 | } |
---|
| 549 | } |
---|
| 550 | return TRUE; |
---|
| 551 | } |
---|
| 552 | |
---|
| 553 | /* Text mode part of the file transfer protocol */ |
---|
| 554 | gboolean msn_ftp_txtproto( file_transfer_t *file ) |
---|
| 555 | { |
---|
| 556 | msn_filetransfer_t *msn_file = file->data; |
---|
| 557 | int i = msn_file->tbufpos, st; |
---|
| 558 | char *tbuf = msn_file->tbuf; |
---|
| 559 | |
---|
| 560 | ASSERTSOCKOP( st = read( msn_file->fd, |
---|
| 561 | tbuf + msn_file->tbufpos, |
---|
| 562 | sizeof( msn_file->tbuf ) - msn_file->tbufpos ), |
---|
| 563 | "Receiving" ); |
---|
| 564 | |
---|
| 565 | if( st == 0 ) |
---|
| 566 | return msn_ftp_abort( file, "read returned EOF while reading text from msn client" ); |
---|
| 567 | |
---|
| 568 | msn_file->tbufpos += st; |
---|
| 569 | |
---|
| 570 | do { |
---|
| 571 | for( ;i < msn_file->tbufpos; i++ ) { |
---|
| 572 | if( tbuf[i] == '\n' || tbuf[i] == '\r' ) { |
---|
| 573 | tbuf[i] = '\0'; |
---|
| 574 | if( i > 0 ) |
---|
| 575 | msn_ftp_handle_command( file, tbuf ); |
---|
| 576 | else |
---|
| 577 | while( tbuf[i] == '\n' || tbuf[i] == '\r' ) i++; |
---|
| 578 | memmove( tbuf, tbuf + i + 1, msn_file->tbufpos - i - 1 ); |
---|
| 579 | msn_file->tbufpos -= i + 1; |
---|
| 580 | i = 0; |
---|
| 581 | break; |
---|
| 582 | } |
---|
| 583 | } |
---|
| 584 | } while ( i < msn_file->tbufpos ); |
---|
| 585 | |
---|
| 586 | if( msn_file->tbufpos == sizeof( msn_file->tbuf ) ) |
---|
| 587 | return msn_ftp_abort( file, |
---|
| 588 | "Line exceeded %d bytes in text protocol", |
---|
| 589 | sizeof( msn_file->tbuf ) ); |
---|
| 590 | return TRUE; |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | gboolean msn_ftp_read( gpointer data, gint fd, b_input_condition cond ) |
---|
| 594 | { |
---|
| 595 | file_transfer_t *file = data; |
---|
| 596 | msn_filetransfer_t *msn_file = file->data; |
---|
| 597 | |
---|
| 598 | if( msn_file->status & MSN_TRANSFER_RECEIVING ) |
---|
| 599 | return msn_ftpr_read( file ); |
---|
| 600 | else |
---|
| 601 | return msn_ftp_txtproto( file ); |
---|
| 602 | } |
---|
| 603 | |
---|
| 604 | void msn_ftp_free( file_transfer_t *file ) |
---|
| 605 | { |
---|
| 606 | msn_filetransfer_t *msn_file = file->data; |
---|
| 607 | |
---|
| 608 | if( msn_file->r_event_id ) |
---|
| 609 | b_event_remove( msn_file->r_event_id ); |
---|
| 610 | |
---|
| 611 | if( msn_file->w_event_id ) |
---|
| 612 | b_event_remove( msn_file->w_event_id ); |
---|
| 613 | |
---|
| 614 | if( msn_file->fd != -1 ) |
---|
| 615 | closesocket( msn_file->fd ); |
---|
| 616 | |
---|
| 617 | msn_file->md->filetransfers = g_slist_remove( msn_file->md->filetransfers, msn_file->dcc ); |
---|
| 618 | |
---|
| 619 | g_free( msn_file->handle ); |
---|
| 620 | |
---|
| 621 | g_free( msn_file ); |
---|
| 622 | } |
---|
| 623 | |
---|
| 624 | void msn_ftpr_accept( file_transfer_t *file ) |
---|
| 625 | { |
---|
| 626 | msn_filetransfer_t *msn_file = file->data; |
---|
| 627 | |
---|
| 628 | msn_ftp_invitation_cmd( msn_file->md->ic, msn_file->handle, msn_file->invite_cookie, "ACCEPT", |
---|
| 629 | "Launch-Application: FALSE\r\n" |
---|
| 630 | "Request-Data: IP-Address:\r\n"); |
---|
| 631 | } |
---|
| 632 | |
---|
| 633 | void msn_ftp_finished( file_transfer_t *file ) |
---|
| 634 | { |
---|
| 635 | msn_ftp_write( file, "BYE 16777989\r\n" ); |
---|
| 636 | } |
---|
| 637 | |
---|
| 638 | void msn_ftp_canceled( file_transfer_t *file, char *reason ) |
---|
| 639 | { |
---|
| 640 | msn_filetransfer_t *msn_file = file->data; |
---|
| 641 | |
---|
| 642 | msn_ftp_cancel_invite( msn_file->md->ic, msn_file->handle, |
---|
| 643 | msn_file->invite_cookie, |
---|
| 644 | file->status & FT_STATUS_TRANSFERRING ? |
---|
| 645 | "FTTIMEOUT" : |
---|
| 646 | "FAIL" ); |
---|
| 647 | |
---|
| 648 | imcb_log( msn_file->md->ic, "File transfer aborted: %s", reason ); |
---|
| 649 | } |
---|
| 650 | |
---|
| 651 | gboolean msn_ftpr_write_request( file_transfer_t *file ) |
---|
| 652 | { |
---|
| 653 | msn_filetransfer_t *msn_file = file->data; |
---|
| 654 | if( msn_file->r_event_id != 0 ) { |
---|
| 655 | msn_ftp_abort( file, |
---|
| 656 | "BUG in MSN file transfer:" |
---|
| 657 | "write_request called when" |
---|
| 658 | "already watching for input" ); |
---|
| 659 | return FALSE; |
---|
| 660 | } |
---|
| 661 | |
---|
| 662 | msn_file->r_event_id = |
---|
| 663 | b_input_add( msn_file->fd, GAIM_INPUT_READ, msn_ftp_read, file ); |
---|
| 664 | |
---|
| 665 | return TRUE; |
---|
| 666 | } |
---|