src/common/nntp.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27
  28 #include "intl.h"
  29 #include "nntp.h"
  30 #include "socket.h"
  31 #include "utils.h"
  32 #include "log.h"
  33 #if USE_OPENSSL
  34 #  include "ssl.h"
  35 #endif
  36
  37 static gint verbose = 1;
  38
  39 static void nntp_session_destroy(Session        *session);
  40
  41 static gint nntp_ok             (SockInfo       *sock,
  42                                  gchar          *argbuf);
  43
  44 static gint nntp_gen_send       (SockInfo       *sock,
  45                                  const gchar    *format,
  46                                  ...);
  47 static gint nntp_gen_recv       (SockInfo       *sock,
  48                                  gchar          *buf,
  49                                  gint            size);
  50 static gint nntp_gen_command    (NNTPSession    *session,
  51                                  gchar          *argbuf,
  52                                  const gchar    *format,
  53                                  ...);
  54
  55 #if USE_OPENSSL
  56 Session *nntp_session_new(const gchar *server, gushort port, gchar *buf,
  57                           const gchar *userid, const gchar *passwd,
  58                           SSLType ssl_type)
  59 #else
  60 Session *nntp_session_new(const gchar *server, gushort port, gchar *buf,
  61                           const gchar *userid, const gchar *passwd)
  62 #endif
  63 {
  64         NNTPSession *session;
  65         SockInfo *sock;
  66
  67         if ((sock = sock_connect(server, port)) == NULL) {
  68                 log_warning("Can't connect to NNTP server: %s:%d\n",
  69                             server, port);
  70                 return NULL;
  71         }
  72
  73 #if USE_OPENSSL
  74         if (ssl_type == SSL_TUNNEL && !ssl_init_socket(sock)) {
  75                 sock_close(sock);
  76                 return NULL;
  77         }
  78 #endif
  79
  80         if (nntp_ok(sock, buf) != NN_SUCCESS) {
  81                 sock_close(sock);
  82                 return NULL;
  83         }
  84
  85         session = g_new0(NNTPSession, 1);
  86
  87         session_init(SESSION(session));
  88
  89         SESSION(session)->type                  = SESSION_NEWS;
  90         SESSION(session)->server                = g_strdup(server);
  91         SESSION(session)->sock                  = sock;
  92         SESSION(session)->last_access_time      = time(NULL);
  93         SESSION(session)->data                  = NULL;
  94
  95         SESSION(session)->destroy               = nntp_session_destroy;
  96
  97         session->group = NULL;
  98
  99         if (userid && passwd) {
 100                 gint ok;
 101
 102                 session->userid = g_strdup(userid);
 103                 session->passwd = g_strdup(passwd);
 104
 105                 ok = nntp_gen_send(sock, "AUTHINFO USER %s", session->userid);
 106                 if (ok != NN_SUCCESS) {
 107                         session_destroy(SESSION(session));
 108                         return NULL;
 109                 }
 110                 ok = nntp_ok(sock, NULL);
 111                 if (ok == NN_AUTHCONT) {
 112                         ok = nntp_gen_send(sock, "AUTHINFO PASS %s",
 113                                            session->passwd);
 114                         if (ok != NN_SUCCESS) {
 115                                 session_destroy(SESSION(session));
 116                                 return NULL;
 117                         }
 118                         ok = nntp_ok(sock, NULL);
 119                         if (ok != NN_SUCCESS)
 120                                 session->auth_failed = TRUE;
 121                 }
 122                 if (ok == NN_SOCKET) {
 123                         session_destroy(SESSION(session));
 124                         return NULL;
 125                 }
 126         }
 127
 128         return SESSION(session);
 129 }
 130
 131 void nntp_forceauth(NNTPSession *session, gchar *buf, const gchar *userid, const gchar *passwd)
 132
 133 {
 134         if (!session) return;
 135
 136         nntp_gen_command(session, buf , "AUTHINFO USER %s", userid);
 137
 138
 139 }
 140
 141 static void nntp_session_destroy(Session *session)
 142 {
 143         NNTPSession *nntp_session = NNTP_SESSION(session);
 144
 145         g_return_if_fail(session != NULL);
 146
 147         g_free(nntp_session->group);
 148         g_free(nntp_session->userid);
 149         g_free(nntp_session->passwd);
 150 }
 151
 152 gint nntp_group(NNTPSession *session, const gchar *group,
 153                 gint *num, gint *first, gint *last)
 154 {
 155         gint ok;
 156         gint resp;
 157         gchar buf[NNTPBUFSIZE];
 158
 159         ok = nntp_gen_command(session, buf, "GROUP %s", group);
 160
 161         if (ok != NN_SUCCESS && ok != NN_SOCKET && ok != NN_AUTHREQ) {
 162                 ok = nntp_mode(session, FALSE);
 163                 if (ok == NN_SUCCESS)
 164                         ok = nntp_gen_command(session, buf, "GROUP %s", group);
 165         }
 166
 167         if (ok != NN_SUCCESS)
 168                 return ok;
 169
 170         if (sscanf(buf, "%d %d %d %d", &resp, num, first, last)
 171             != 4) {
 172                 log_warning("protocol error: %s\n", buf);
 173                 return NN_PROTOCOL;
 174         }
 175
 176         return NN_SUCCESS;
 177 }
 178
 179 gint nntp_get_article(NNTPSession *session, const gchar *cmd, gint num,
 180                       gchar **msgid)
 181 {
 182         gint ok;
 183         gchar buf[NNTPBUFSIZE];
 184
 185         if (num > 0)
 186                 ok = nntp_gen_command(session, buf, "%s %d", cmd, num);
 187         else
 188                 ok = nntp_gen_command(session, buf, cmd);
 189
 190         if (ok != NN_SUCCESS)
 191                 return ok;
 192
 193         extract_parenthesis(buf, '<', '>');
 194         if (buf[0] == '\0') {
 195                 log_warning("protocol error\n");
 196                 return NN_PROTOCOL;
 197         }
 198         *msgid = g_strdup(buf);
 199
 200         return NN_SUCCESS;
 201 }
 202
 203 gint nntp_article(NNTPSession *session, gint num, gchar **msgid)
 204 {
 205         return nntp_get_article(session, "ARTICLE", num, msgid);
 206 }
 207
 208 gint nntp_body(NNTPSession *session, gint num, gchar **msgid)
 209 {
 210         return nntp_get_article(session, "BODY", num, msgid);
 211 }
 212
 213 gint nntp_head(NNTPSession *session, gint num, gchar **msgid)
 214 {
 215         return nntp_get_article(session, "HEAD", num, msgid);
 216 }
 217
 218 gint nntp_stat(NNTPSession *session, gint num, gchar **msgid)
 219 {
 220         return nntp_get_article(session, "STAT", num, msgid);
 221 }
 222
 223 gint nntp_next(NNTPSession *session, gint *num, gchar **msgid)
 224 {
 225         gint ok;
 226         gint resp;
 227         gchar buf[NNTPBUFSIZE];
 228
 229         ok = nntp_gen_command(session, buf, "NEXT");
 230
 231         if (ok != NN_SUCCESS)
 232                 return ok;
 233
 234         if (sscanf(buf, "%d %d", &resp, num) != 2) {
 235                 log_warning("protocol error: %s\n", buf);
 236                 return NN_PROTOCOL;
 237         }
 238
 239         extract_parenthesis(buf, '<', '>');
 240         if (buf[0] == '\0') {
 241                 log_warning("protocol error\n");
 242                 return NN_PROTOCOL;
 243         }
 244         *msgid = g_strdup(buf);
 245
 246         return NN_SUCCESS;
 247 }
 248
 249 gint nntp_xover(NNTPSession *session, gint first, gint last)
 250 {
 251         gint ok;
 252         gchar buf[NNTPBUFSIZE];
 253
 254         ok = nntp_gen_command(session, buf, "XOVER %d-%d", first, last);
 255         if (ok != NN_SUCCESS)
 256                 return ok;
 257
 258         return NN_SUCCESS;
 259 }
 260
 261 gint nntp_xhdr(NNTPSession *session, const gchar *header, gint first, gint last)
 262 {
 263         gint ok;
 264         gchar buf[NNTPBUFSIZE];
 265
 266         ok = nntp_gen_command(session, buf, "XHDR %s %d-%d",
 267                               header, first, last);
 268         if (ok != NN_SUCCESS)
 269                 return ok;
 270
 271         return NN_SUCCESS;
 272 }
 273
 274 gint nntp_list(NNTPSession *session)
 275 {
 276         return nntp_gen_command(session, NULL, "LIST");
 277 }
 278
 279 gint nntp_post(NNTPSession *session, FILE *fp)
 280 {
 281         gint ok;
 282         gchar buf[NNTPBUFSIZE];
 283         gchar *msg;
 284
 285         ok = nntp_gen_command(session, buf, "POST");
 286         if (ok != NN_SUCCESS)
 287                 return ok;
 288
 289         msg = get_outgoing_rfc2822_str(fp);
 290         if (sock_write_all(SESSION(session)->sock, msg, strlen(msg)) < 0) {
 291                 log_warning("Error occurred while posting\n");
 292                 g_free(msg);
 293                 return NN_SOCKET;
 294         }
 295         g_free(msg);
 296
 297         sock_write_all(SESSION(session)->sock, ".\r\n", 3);
 298         if ((ok = nntp_ok(SESSION(session)->sock, buf)) != NN_SUCCESS)
 299                 return ok;
 300
 301         return NN_SUCCESS;
 302 }
 303
 304 gint nntp_newgroups(NNTPSession *session)
 305 {
 306         return NN_SUCCESS;
 307 }
 308
 309 gint nntp_newnews(NNTPSession *session)
 310 {
 311         return NN_SUCCESS;
 312 }
 313
 314 gint nntp_mode(NNTPSession *session, gboolean stream)
 315 {
 316         gint ok;
 317
 318         ok = nntp_gen_command(session, NULL, "MODE %s",
 319                               stream ? "STREAM" : "READER");
 320
 321         return ok;
 322 }
 323
 324 static gint nntp_ok(SockInfo *sock, gchar *argbuf)
 325 {
 326         gint ok;
 327         gchar buf[NNTPBUFSIZE];
 328
 329         if ((ok = nntp_gen_recv(sock, buf, sizeof(buf))) == NN_SUCCESS) {
 330                 if (strlen(buf) < 3)
 331                         return NN_ERROR;
 332
 333                 if ((buf[0] == '1' || buf[0] == '2' || buf[0] == '3') &&
 334                     (buf[3] == ' ' || buf[3] == '\0')) {
 335                         if (argbuf)
 336                                 strcpy(argbuf, buf);
 337
 338                         if (!strncmp(buf, "381", 3))
 339                                 return NN_AUTHCONT;
 340
 341                         return NN_SUCCESS;
 342                 } else if (!strncmp(buf, "480", 3))
 343                         return NN_AUTHREQ;
 344                 else
 345                         return NN_ERROR;
 346         }
 347
 348         return ok;
 349 }
 350
 351 static gint nntp_gen_send(SockInfo *sock, const gchar *format, ...)
 352 {
 353         gchar buf[NNTPBUFSIZE];
 354         va_list args;
 355
 356         va_start(args, format);
 357         g_vsnprintf(buf, sizeof(buf), format, args);
 358         va_end(args);
 359
 360         if (verbose) {
 361                 if (!g_strncasecmp(buf, "AUTHINFO PASS", 13))
 362                         log_print("NNTP> AUTHINFO PASS ********\n");
 363                 else
 364                         log_print("NNTP> %s\n", buf);
 365         }
 366
 367         strcat(buf, "\r\n");
 368         if (sock_write_all(sock, buf, strlen(buf)) < 0) {
 369                 log_warning("Error occurred while sending command\n");
 370                 return NN_SOCKET;
 371         }
 372
 373         return NN_SUCCESS;
 374 }
 375
 376 static gint nntp_gen_recv(SockInfo *sock, gchar *buf, gint size)
 377 {
 378         if (sock_gets(sock, buf, size) == -1)
 379                 return NN_SOCKET;
 380
 381         strretchomp(buf);
 382
 383         if (verbose)
 384                 log_print("NNTP< %s\n", buf);
 385
 386         return NN_SUCCESS;
 387 }
 388
 389 static gint nntp_gen_command(NNTPSession *session, gchar *argbuf,
 390                              const gchar *format, ...)
 391 {
 392         gchar buf[NNTPBUFSIZE];
 393         va_list args;
 394         gint ok;
 395         SockInfo *sock;
 396
 397         va_start(args, format);
 398         g_vsnprintf(buf, sizeof(buf), format, args);
 399         va_end(args);
 400
 401         sock = SESSION(session)->sock;
 402         ok = nntp_gen_send(sock, "%s", buf);
 403         if (ok != NN_SUCCESS)
 404                 return ok;
 405         ok = nntp_ok(sock, argbuf);
 406         if (ok == NN_AUTHREQ) {
 407                 if (!session->userid || !session->passwd) {
 408                         session->auth_failed = TRUE;
 409                         return ok;
 410                 }
 411
 412                 ok = nntp_gen_send(sock, "AUTHINFO USER %s", session->userid);
 413                 if (ok != NN_SUCCESS)
 414                         return ok;
 415                 ok = nntp_ok(sock, NULL);
 416                 if (ok == NN_AUTHCONT) {
 417                         ok = nntp_gen_send(sock, "AUTHINFO PASS %s",
 418                                            session->passwd);
 419                         if (ok != NN_SUCCESS)
 420                                 return ok;
 421                         ok = nntp_ok(sock, NULL);
 422                 }
 423                 if (ok != NN_SUCCESS) {
 424                         session->auth_failed = TRUE;
 425                         return ok;
 426                 }
 427
 428                 ok = nntp_gen_send(sock, "%s", buf);
 429                 if (ok != NN_SUCCESS)
 430                         return ok;
 431                 ok = nntp_ok(sock, argbuf);
 432
 433         } else if (ok == NN_AUTHCONT) {
 434                 ok = nntp_gen_send(sock, "AUTHINFO PASS %s",
 435                                    session->passwd);
 436                 if (ok != NN_SUCCESS)  {
 437                         session->auth_failed = TRUE;
 438                         return ok;
 439                 }
 440                 ok = nntp_ok(sock, NULL);
 441        }
 442
 443         return ok;
 444 }