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| 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 | #include <stdarg.h> |
| 28 | #include <ctype.h> |
| 29 | #include <unistd.h> |
| 30 | #include <time.h> |
| 31 | #include <errno.h> |
| 32 | |
| 33 | #include "intl.h" |
| 34 | #include "pop.h" |
| 35 | #include "md5.h" |
| 36 | #include "prefs_account.h" |
| 37 | #include "utils.h" |
| 38 | #include "recv.h" |
| 39 | |
| 40 | static gint pop3_greeting_recv (Pop3Session *session,
|
| 41 | const gchar *msg);
|
| 42 | static gint pop3_getauth_user_send (Pop3Session *session);
|
| 43 | static gint pop3_getauth_pass_send (Pop3Session *session);
|
| 44 | static gint pop3_getauth_apop_send (Pop3Session *session);
|
| 45 | #if USE_SSL
|
| 46 | static gint pop3_stls_send (Pop3Session *session);
|
| 47 | static gint pop3_stls_recv (Pop3Session *session);
|
| 48 | #endif
|
| 49 | static gint pop3_getrange_stat_send (Pop3Session *session);
|
| 50 | static gint pop3_getrange_stat_recv (Pop3Session *session,
|
| 51 | const gchar *msg);
|
| 52 | static gint pop3_getrange_last_send (Pop3Session *session);
|
| 53 | static gint pop3_getrange_last_recv (Pop3Session *session,
|
| 54 | const gchar *msg);
|
| 55 | static gint pop3_getrange_uidl_send (Pop3Session *session);
|
| 56 | static gint pop3_getrange_uidl_recv (Pop3Session *session,
|
| 57 | const gchar *data,
|
| 58 | guint len); |
| 59 | static gint pop3_getsize_list_send (Pop3Session *session);
|
| 60 | static gint pop3_getsize_list_recv (Pop3Session *session,
|
| 61 | const gchar *data,
|
| 62 | guint len); |
| 63 | static gint pop3_retr_send (Pop3Session *session);
|
| 64 | static gint pop3_retr_recv (Pop3Session *session,
|
| 65 | const gchar *data,
|
| 66 | guint len); |
| 67 | static gint pop3_delete_send (Pop3Session *session);
|
| 68 | static gint pop3_delete_recv (Pop3Session *session);
|
| 69 | static gint pop3_logout_send (Pop3Session *session);
|
| 70 | |
| 71 | static void pop3_gen_send (Pop3Session *session, |
| 72 | const gchar *format, ...);
|
| 73 | |
| 74 | static void pop3_session_destroy (Session *session); |
| 75 | |
| 76 | static gint pop3_write_msg_to_file (const gchar *file, |
| 77 | const gchar *data,
|
| 78 | guint len); |
| 79 | |
| 80 | static Pop3State pop3_lookup_next (Pop3Session *session);
|
| 81 | static Pop3ErrorValue pop3_ok (Pop3Session *session,
|
| 82 | const gchar *msg);
|
| 83 | |
| 84 | static gint pop3_session_recv_msg (Session *session,
|
| 85 | const gchar *msg);
|
| 86 | static gint pop3_session_recv_data_finished (Session *session,
|
| 87 | guchar *data, |
| 88 | guint len); |
| 89 | |
| 90 | |
| 91 | static gint pop3_greeting_recv(Pop3Session *session, const gchar *msg) |
| 92 | {
|
| 93 | session->state = POP3_GREETING; |
| 94 | |
| 95 | session->greeting = g_strdup(msg); |
| 96 | return PS_SUCCESS;
|
| 97 | } |
| 98 | |
| 99 | #if USE_SSL
|
| 100 | static gint pop3_stls_send(Pop3Session *session)
|
| 101 | {
|
| 102 | session->state = POP3_STLS; |
| 103 | pop3_gen_send(session, "STLS");
|
| 104 | return PS_SUCCESS;
|
| 105 | } |
| 106 | |
| 107 | static gint pop3_stls_recv(Pop3Session *session)
|
| 108 | {
|
| 109 | if (session_start_tls(SESSION(session)) < 0) { |
| 110 | session->error_val = PS_SOCKET; |
| 111 | return -1; |
| 112 | } |
| 113 | return PS_SUCCESS;
|
| 114 | } |
| 115 | #endif /* USE_SSL */ |
| 116 | |
| 117 | static gint pop3_getauth_user_send(Pop3Session *session)
|
| 118 | {
|
| 119 | g_return_val_if_fail(session->user != NULL, -1); |
| 120 | |
| 121 | session->state = POP3_GETAUTH_USER; |
| 122 | pop3_gen_send(session, "USER %s", session->user);
|
| 123 | return PS_SUCCESS;
|
| 124 | } |
| 125 | |
| 126 | static gint pop3_getauth_pass_send(Pop3Session *session)
|
| 127 | {
|
| 128 | g_return_val_if_fail(session->pass != NULL, -1); |
| 129 | |
| 130 | session->state = POP3_GETAUTH_PASS; |
| 131 | pop3_gen_send(session, "PASS %s", session->pass);
|
| 132 | return PS_SUCCESS;
|
| 133 | } |
| 134 | |
| 135 | static gint pop3_getauth_apop_send(Pop3Session *session)
|
| 136 | {
|
| 137 | gchar *start, *end; |
| 138 | gchar *apop_str; |
| 139 | gchar md5sum[33];
|
| 140 | |
| 141 | g_return_val_if_fail(session->user != NULL, -1); |
| 142 | g_return_val_if_fail(session->pass != NULL, -1); |
| 143 | |
| 144 | session->state = POP3_GETAUTH_APOP; |
| 145 | |
| 146 | if ((start = strchr(session->greeting, '<')) == NULL) { |
| 147 | log_warning(_("Required APOP timestamp not found "
|
| 148 | "in greeting\n"));
|
| 149 | session->error_val = PS_PROTOCOL; |
| 150 | return -1; |
| 151 | } |
| 152 | |
| 153 | if ((end = strchr(start, '>')) == NULL || end == start + 1) { |
| 154 | log_warning(_("Timestamp syntax error in greeting\n"));
|
| 155 | session->error_val = PS_PROTOCOL; |
| 156 | return -1; |
| 157 | } |
| 158 | |
| 159 | *(end + 1) = '\0'; |
| 160 | |
| 161 | apop_str = g_strconcat(start, session->pass, NULL);
|
| 162 | md5_hex_digest(md5sum, apop_str); |
| 163 | g_free(apop_str); |
| 164 | |
| 165 | pop3_gen_send(session, "APOP %s %s", session->user, md5sum);
|
| 166 | |
| 167 | return PS_SUCCESS;
|
| 168 | } |
| 169 | |
| 170 | static gint pop3_getrange_stat_send(Pop3Session *session)
|
| 171 | {
|
| 172 | session->state = POP3_GETRANGE_STAT; |
| 173 | pop3_gen_send(session, "STAT");
|
| 174 | return PS_SUCCESS;
|
| 175 | } |
| 176 | |
| 177 | static gint pop3_getrange_stat_recv(Pop3Session *session, const gchar *msg) |
| 178 | {
|
| 179 | if (sscanf(msg, "%d %d", &session->count, &session->total_bytes) != 2) { |
| 180 | log_warning(_("POP3 protocol error\n"));
|
| 181 | session->error_val = PS_PROTOCOL; |
| 182 | return -1; |
| 183 | } else {
|
| 184 | if (session->count == 0) { |
| 185 | session->uidl_is_valid = TRUE; |
| 186 | } else {
|
| 187 | session->msg = g_new0(Pop3MsgInfo, session->count + 1);
|
| 188 | session->cur_msg = 1;
|
| 189 | } |
| 190 | } |
| 191 | |
| 192 | return PS_SUCCESS;
|
| 193 | } |
| 194 | |
| 195 | static gint pop3_getrange_last_send(Pop3Session *session)
|
| 196 | {
|
| 197 | session->state = POP3_GETRANGE_LAST; |
| 198 | pop3_gen_send(session, "LAST");
|
| 199 | return PS_SUCCESS;
|
| 200 | } |
| 201 | |
| 202 | static gint pop3_getrange_last_recv(Pop3Session *session, const gchar *msg) |
| 203 | {
|
| 204 | gint last; |
| 205 | |
| 206 | if (sscanf(msg, "%d", &last) == 0) { |
| 207 | log_warning(_("POP3 protocol error\n"));
|
| 208 | session->error_val = PS_PROTOCOL; |
| 209 | return -1; |
| 210 | } else {
|
| 211 | if (session->count > last) {
|
| 212 | session->new_msg_exist = TRUE; |
| 213 | session->cur_msg = last + 1;
|
| 214 | } else
|
| 215 | session->cur_msg = 0;
|
| 216 | } |
| 217 | |
| 218 | return PS_SUCCESS;
|
| 219 | } |
| 220 | |
| 221 | static gint pop3_getrange_uidl_send(Pop3Session *session)
|
| 222 | {
|
| 223 | session->state = POP3_GETRANGE_UIDL; |
| 224 | pop3_gen_send(session, "UIDL");
|
| 225 | return PS_SUCCESS;
|
| 226 | } |
| 227 | |
| 228 | static gint pop3_getrange_uidl_recv(Pop3Session *session, const gchar *data, |
| 229 | guint len) |
| 230 | {
|
| 231 | gchar id[IDLEN + 1];
|
| 232 | gchar buf[POPBUFSIZE]; |
| 233 | gint buf_len; |
| 234 | gint num; |
| 235 | time_t recv_time; |
| 236 | const gchar *p = data;
|
| 237 | const gchar *lastp = data + len;
|
| 238 | const gchar *newline;
|
| 239 | |
| 240 | while (p < lastp) {
|
| 241 | if ((newline = memchr(p, '\r', lastp - p)) == NULL) |
| 242 | return -1; |
| 243 | buf_len = MIN(newline - p, sizeof(buf) - 1); |
| 244 | memcpy(buf, p, buf_len); |
| 245 | buf[buf_len] = '\0';
|
| 246 | |
| 247 | p = newline + 1;
|
| 248 | if (p < lastp && *p == '\n') p++; |
| 249 | |
| 250 | if (sscanf(buf, "%d %" Xstr(IDLEN) "s", &num, id) != 2 || |
| 251 | num <= 0 || num > session->count) {
|
| 252 | log_warning(_("invalid UIDL response: %s\n"), buf);
|
| 253 | continue;
|
| 254 | } |
| 255 | |
| 256 | session->msg[num].uidl = g_strdup(id); |
| 257 | |
| 258 | recv_time = (time_t)g_hash_table_lookup(session->uidl_table, id); |
| 259 | session->msg[num].recv_time = recv_time; |
| 260 | |
| 261 | if (!session->ac_prefs->getall && recv_time != RECV_TIME_NONE)
|
| 262 | session->msg[num].received = TRUE; |
| 263 | |
| 264 | if (!session->new_msg_exist &&
|
| 265 | (session->ac_prefs->getall || recv_time == RECV_TIME_NONE || |
| 266 | session->ac_prefs->rmmail)) {
|
| 267 | session->cur_msg = num; |
| 268 | session->new_msg_exist = TRUE; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | session->uidl_is_valid = TRUE; |
| 273 | return PS_SUCCESS;
|
| 274 | } |
| 275 | |
| 276 | static gint pop3_getsize_list_send(Pop3Session *session)
|
| 277 | {
|
| 278 | session->state = POP3_GETSIZE_LIST; |
| 279 | pop3_gen_send(session, "LIST");
|
| 280 | return PS_SUCCESS;
|
| 281 | } |
| 282 | |
| 283 | static gint pop3_getsize_list_recv(Pop3Session *session, const gchar *data, |
| 284 | guint len) |
| 285 | {
|
| 286 | gchar buf[POPBUFSIZE]; |
| 287 | gint buf_len; |
| 288 | guint num, size; |
| 289 | const gchar *p = data;
|
| 290 | const gchar *lastp = data + len;
|
| 291 | const gchar *newline;
|
| 292 | |
| 293 | while (p < lastp) {
|
| 294 | if ((newline = memchr(p, '\r', lastp - p)) == NULL) |
| 295 | return -1; |
| 296 | buf_len = MIN(newline - p, sizeof(buf) - 1); |
| 297 | memcpy(buf, p, buf_len); |
| 298 | buf[buf_len] = '\0';
|
| 299 | |
| 300 | p = newline + 1;
|
| 301 | if (p < lastp && *p == '\n') p++; |
| 302 | |
| 303 | if (sscanf(buf, "%u %u", &num, &size) != 2) { |
| 304 | session->error_val = PS_PROTOCOL; |
| 305 | return -1; |
| 306 | } |
| 307 | |
| 308 | if (num > 0 && num <= session->count) |
| 309 | session->msg[num].size = size; |
| 310 | if (num > 0 && num < session->cur_msg) |
| 311 | session->cur_total_bytes += size; |
| 312 | } |
| 313 | |
| 314 | return PS_SUCCESS;
|
| 315 | } |
| 316 | |
| 317 | static gint pop3_retr_send(Pop3Session *session)
|
| 318 | {
|
| 319 | session->state = POP3_RETR; |
| 320 | pop3_gen_send(session, "RETR %d", session->cur_msg);
|
| 321 | return PS_SUCCESS;
|
| 322 | } |
| 323 | |
| 324 | static gint pop3_retr_recv(Pop3Session *session, const gchar *data, guint len) |
| 325 | {
|
| 326 | gchar *file; |
| 327 | gint drop_ok; |
| 328 | |
| 329 | file = get_tmp_file(); |
| 330 | if (pop3_write_msg_to_file(file, data, len) < 0) { |
| 331 | g_free(file); |
| 332 | session->error_val = PS_IOERR; |
| 333 | return -1; |
| 334 | } |
| 335 | |
| 336 | drop_ok = session->drop_message(session, file); |
| 337 | unlink(file); |
| 338 | g_free(file); |
| 339 | if (drop_ok < 0) { |
| 340 | session->error_val = PS_IOERR; |
| 341 | return -1; |
| 342 | } |
| 343 | |
| 344 | session->cur_total_bytes += session->msg[session->cur_msg].size; |
| 345 | session->cur_total_recv_bytes += session->msg[session->cur_msg].size; |
| 346 | session->cur_total_num++; |
| 347 | |
| 348 | session->msg[session->cur_msg].received = TRUE; |
| 349 | session->msg[session->cur_msg].recv_time = |
| 350 | drop_ok == DROP_DONT_RECEIVE ? RECV_TIME_KEEP |
| 351 | : drop_ok == DROP_DELETE ? RECV_TIME_DELETE |
| 352 | : session->current_time; |
| 353 | |
| 354 | return PS_SUCCESS;
|
| 355 | } |
| 356 | |
| 357 | static gint pop3_delete_send(Pop3Session *session)
|
| 358 | {
|
| 359 | session->state = POP3_DELETE; |
| 360 | pop3_gen_send(session, "DELE %d", session->cur_msg);
|
| 361 | return PS_SUCCESS;
|
| 362 | } |
| 363 | |
| 364 | static gint pop3_delete_recv(Pop3Session *session)
|
| 365 | {
|
| 366 | session->msg[session->cur_msg].deleted = TRUE; |
| 367 | return PS_SUCCESS;
|
| 368 | } |
| 369 | |
| 370 | static gint pop3_logout_send(Pop3Session *session)
|
| 371 | {
|
| 372 | session->state = POP3_LOGOUT; |
| 373 | pop3_gen_send(session, "QUIT");
|
| 374 | return PS_SUCCESS;
|
| 375 | } |
| 376 | |
| 377 | static void pop3_gen_send(Pop3Session *session, const gchar *format, ...) |
| 378 | {
|
| 379 | gchar buf[POPBUFSIZE + 1];
|
| 380 | va_list args; |
| 381 | |
| 382 | va_start(args, format); |
| 383 | g_vsnprintf(buf, sizeof(buf) - 2, format, args); |
| 384 | va_end(args); |
| 385 | |
| 386 | if (!strncasecmp(buf, "PASS ", 5)) |
| 387 | log_print("POP3> PASS ********\n");
|
| 388 | else
|
| 389 | log_print("POP3> %s\n", buf);
|
| 390 | |
| 391 | session_send_msg(SESSION(session), SESSION_MSG_NORMAL, buf); |
| 392 | } |
| 393 | |
| 394 | Session *pop3_session_new(PrefsAccount *account) |
| 395 | {
|
| 396 | Pop3Session *session; |
| 397 | |
| 398 | g_return_val_if_fail(account != NULL, NULL); |
| 399 | |
| 400 | session = g_new0(Pop3Session, 1);
|
| 401 | |
| 402 | session_init(SESSION(session)); |
| 403 | |
| 404 | SESSION(session)->type = SESSION_POP3; |
| 405 | |
| 406 | SESSION(session)->recv_msg = pop3_session_recv_msg; |
| 407 | SESSION(session)->recv_data_finished = pop3_session_recv_data_finished; |
| 408 | SESSION(session)->send_data_finished = NULL;
|
| 409 | |
| 410 | SESSION(session)->destroy = pop3_session_destroy; |
| 411 | |
| 412 | session->state = POP3_READY; |
| 413 | session->ac_prefs = account; |
| 414 | session->uidl_table = pop3_get_uidl_table(account); |
| 415 | session->current_time = time(NULL);
|
| 416 | session->error_val = PS_SUCCESS; |
| 417 | session->error_msg = NULL;
|
| 418 | |
| 419 | return SESSION(session);
|
| 420 | } |
| 421 | |
| 422 | static void pop3_session_destroy(Session *session) |
| 423 | {
|
| 424 | Pop3Session *pop3_session = POP3_SESSION(session); |
| 425 | gint n; |
| 426 | |
| 427 | g_return_if_fail(session != NULL);
|
| 428 | |
| 429 | for (n = 1; n <= pop3_session->count; n++) |
| 430 | g_free(pop3_session->msg[n].uidl); |
| 431 | g_free(pop3_session->msg); |
| 432 | |
| 433 | if (pop3_session->uidl_table) {
|
| 434 | hash_free_strings(pop3_session->uidl_table); |
| 435 | g_hash_table_destroy(pop3_session->uidl_table); |
| 436 | } |
| 437 | |
| 438 | g_free(pop3_session->greeting); |
| 439 | g_free(pop3_session->user); |
| 440 | g_free(pop3_session->pass); |
| 441 | g_free(pop3_session->error_msg); |
| 442 | } |
| 443 | |
| 444 | GHashTable *pop3_get_uidl_table(PrefsAccount *ac_prefs) |
| 445 | {
|
| 446 | GHashTable *table; |
| 447 | gchar *path; |
| 448 | FILE *fp; |
| 449 | gchar buf[POPBUFSIZE]; |
| 450 | gchar uidl[POPBUFSIZE]; |
| 451 | time_t recv_time; |
| 452 | time_t now; |
| 453 | |
| 454 | table = g_hash_table_new(g_str_hash, g_str_equal); |
| 455 | |
| 456 | path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, |
| 457 | "uidl", G_DIR_SEPARATOR_S, ac_prefs->recv_server,
|
| 458 | "-", ac_prefs->userid, NULL); |
| 459 | if ((fp = fopen(path, "rb")) == NULL) { |
| 460 | if (ENOENT != errno) FILE_OP_ERROR(path, "fopen"); |
| 461 | g_free(path); |
| 462 | path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, |
| 463 | "uidl-", ac_prefs->recv_server,
|
| 464 | "-", ac_prefs->userid, NULL); |
| 465 | if ((fp = fopen(path, "rb")) == NULL) { |
| 466 | if (ENOENT != errno) FILE_OP_ERROR(path, "fopen"); |
| 467 | g_free(path); |
| 468 | return table;
|
| 469 | } |
| 470 | } |
| 471 | g_free(path); |
| 472 | |
| 473 | now = time(NULL);
|
| 474 | |
| 475 | while (fgets(buf, sizeof(buf), fp) != NULL) { |
| 476 | strretchomp(buf); |
| 477 | recv_time = RECV_TIME_NONE; |
| 478 | if (sscanf(buf, "%s\t%ld", uidl, &recv_time) != 2) { |
| 479 | if (sscanf(buf, "%s", uidl) != 1) |
| 480 | continue;
|
| 481 | else
|
| 482 | recv_time = now; |
| 483 | } |
| 484 | if (recv_time == RECV_TIME_NONE)
|
| 485 | recv_time = RECV_TIME_RECEIVED; |
| 486 | g_hash_table_insert(table, g_strdup(uidl), |
| 487 | GINT_TO_POINTER(recv_time)); |
| 488 | } |
| 489 | |
| 490 | fclose(fp); |
| 491 | return table;
|
| 492 | } |
| 493 | |
| 494 | gint pop3_write_uidl_list(Pop3Session *session) |
| 495 | {
|
| 496 | gchar *path; |
| 497 | FILE *fp; |
| 498 | Pop3MsgInfo *msg; |
| 499 | gint n; |
| 500 | |
| 501 | if (!session->uidl_is_valid) return 0; |
| 502 | |
| 503 | path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, |
| 504 | "uidl", G_DIR_SEPARATOR_S,
|
| 505 | session->ac_prefs->recv_server, |
| 506 | "-", session->ac_prefs->userid, NULL); |
| 507 | if ((fp = fopen(path, "wb")) == NULL) { |
| 508 | FILE_OP_ERROR(path, "fopen");
|
| 509 | g_free(path); |
| 510 | return -1; |
| 511 | } |
| 512 | |
| 513 | for (n = 1; n <= session->count; n++) { |
| 514 | msg = &session->msg[n]; |
| 515 | if (msg->uidl && msg->received && !msg->deleted)
|
| 516 | fprintf(fp, "%s\t%ld\n", msg->uidl, msg->recv_time);
|
| 517 | } |
| 518 | |
| 519 | if (fclose(fp) == EOF) FILE_OP_ERROR(path, "fclose"); |
| 520 | g_free(path); |
| 521 | |
| 522 | return 0; |
| 523 | } |
| 524 | |
| 525 | static gint pop3_write_msg_to_file(const gchar *file, const gchar *data, |
| 526 | guint len) |
| 527 | {
|
| 528 | FILE *fp; |
| 529 | const gchar *prev, *cur;
|
| 530 | |
| 531 | g_return_val_if_fail(file != NULL, -1); |
| 532 | |
| 533 | if ((fp = fopen(file, "wb")) == NULL) { |
| 534 | FILE_OP_ERROR(file, "fopen");
|
| 535 | return -1; |
| 536 | } |
| 537 | |
| 538 | if (change_file_mode_rw(fp, file) < 0) |
| 539 | FILE_OP_ERROR(file, "chmod");
|
| 540 | |
| 541 | /* +------------------+----------------+--------------------------+ *
|
| 542 | * ^data ^prev ^cur data+len-1^ */ |
| 543 | |
| 544 | prev = data; |
| 545 | while ((cur = (gchar *)my_memmem(prev, len - (prev - data), "\r\n", 2)) |
| 546 | != NULL) {
|
| 547 | if ((cur > prev && fwrite(prev, cur - prev, 1, fp) < 1) || |
| 548 | fputc('\n', fp) == EOF) { |
| 549 | FILE_OP_ERROR(file, "fwrite");
|
| 550 | g_warning("can't write to file: %s\n", file);
|
| 551 | fclose(fp); |
| 552 | unlink(file); |
| 553 | return -1; |
| 554 | } |
| 555 | |
| 556 | if (cur == data + len - 1) { |
| 557 | prev = cur + 1;
|
| 558 | break;
|
| 559 | } |
| 560 | |
| 561 | if (*(cur + 1) == '\n') |
| 562 | prev = cur + 2;
|
| 563 | else
|
| 564 | prev = cur + 1;
|
| 565 | |
| 566 | if (prev - data < len - 1 && *prev == '.' && *(prev + 1) == '.') |
| 567 | prev++; |
| 568 | |
| 569 | if (prev - data >= len)
|
| 570 | break;
|
| 571 | } |
| 572 | |
| 573 | if (prev - data < len &&
|
| 574 | fwrite(prev, len - (prev - data), 1, fp) < 1) { |
| 575 | FILE_OP_ERROR(file, "fwrite");
|
| 576 | g_warning("can't write to file: %s\n", file);
|
| 577 | fclose(fp); |
| 578 | unlink(file); |
| 579 | return -1; |
| 580 | } |
| 581 | if (data[len - 1] != '\r' && data[len - 1] != '\n') { |
| 582 | if (fputc('\n', fp) == EOF) { |
| 583 | FILE_OP_ERROR(file, "fputc");
|
| 584 | g_warning("can't write to file: %s\n", file);
|
| 585 | fclose(fp); |
| 586 | unlink(file); |
| 587 | return -1; |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | if (fclose(fp) == EOF) { |
| 592 | FILE_OP_ERROR(file, "fclose");
|
| 593 | unlink(file); |
| 594 | return -1; |
| 595 | } |
| 596 | |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | static Pop3State pop3_lookup_next(Pop3Session *session)
|
| 601 | {
|
| 602 | Pop3MsgInfo *msg; |
| 603 | PrefsAccount *ac = session->ac_prefs; |
| 604 | gint size; |
| 605 | gboolean size_limit_over; |
| 606 | |
| 607 | for (;;) {
|
| 608 | msg = &session->msg[session->cur_msg]; |
| 609 | size = msg->size; |
| 610 | size_limit_over = |
| 611 | (ac->enable_size_limit && |
| 612 | ac->size_limit > 0 &&
|
| 613 | size > ac->size_limit * 1024);
|
| 614 | |
| 615 | if (msg->recv_time == RECV_TIME_DELETE ||
|
| 616 | (ac->rmmail && |
| 617 | msg->recv_time != RECV_TIME_NONE && |
| 618 | msg->recv_time != RECV_TIME_KEEP && |
| 619 | session->current_time - msg->recv_time >= |
| 620 | ac->msg_leave_time * 24 * 60 * 60)) { |
| 621 | log_print(_("POP3: Deleting expired message %d\n"),
|
| 622 | session->cur_msg); |
| 623 | pop3_delete_send(session); |
| 624 | return POP3_DELETE;
|
| 625 | } |
| 626 | |
| 627 | if (size_limit_over)
|
| 628 | log_print |
| 629 | (_("POP3: Skipping message %d (%d bytes)\n"),
|
| 630 | session->cur_msg, size); |
| 631 | |
| 632 | if (size == 0 || msg->received || size_limit_over) { |
| 633 | session->cur_total_bytes += size; |
| 634 | if (session->cur_msg == session->count) {
|
| 635 | pop3_logout_send(session); |
| 636 | return POP3_LOGOUT;
|
| 637 | } else
|
| 638 | session->cur_msg++; |
| 639 | } else
|
| 640 | break;
|
| 641 | } |
| 642 | |
| 643 | pop3_retr_send(session); |
| 644 | return POP3_RETR;
|
| 645 | } |
| 646 | |
| 647 | static Pop3ErrorValue pop3_ok(Pop3Session *session, const gchar *msg) |
| 648 | {
|
| 649 | Pop3ErrorValue ok; |
| 650 | |
| 651 | log_print("POP3< %s\n", msg);
|
| 652 | |
| 653 | if (!strncmp(msg, "+OK", 3)) |
| 654 | ok = PS_SUCCESS; |
| 655 | else if (!strncmp(msg, "-ERR", 4)) { |
| 656 | if (strstr(msg + 4, "lock") || |
| 657 | strstr(msg + 4, "Lock") || |
| 658 | strstr(msg + 4, "LOCK") || |
| 659 | strstr(msg + 4, "wait")) { |
| 660 | log_warning(_("mailbox is locked\n"));
|
| 661 | ok = PS_LOCKBUSY; |
| 662 | } else if (strcasestr(msg + 4, "timeout")) { |
| 663 | log_warning(_("session timeout\n"));
|
| 664 | ok = PS_ERROR; |
| 665 | } else {
|
| 666 | switch (session->state) {
|
| 667 | #if USE_SSL
|
| 668 | case POP3_STLS:
|
| 669 | log_warning(_("can't start TLS session\n"));
|
| 670 | ok = PS_ERROR; |
| 671 | break;
|
| 672 | #endif
|
| 673 | case POP3_GETAUTH_USER:
|
| 674 | case POP3_GETAUTH_PASS:
|
| 675 | case POP3_GETAUTH_APOP:
|
| 676 | log_warning(_("error occurred on authentication\n"));
|
| 677 | ok = PS_AUTHFAIL; |
| 678 | break;
|
| 679 | case POP3_GETRANGE_LAST:
|
| 680 | case POP3_GETRANGE_UIDL:
|
| 681 | log_warning(_("command not supported\n"));
|
| 682 | ok = PS_NOTSUPPORTED; |
| 683 | break;
|
| 684 | default:
|
| 685 | log_warning(_("error occurred on POP3 session\n"));
|
| 686 | ok = PS_ERROR; |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | g_free(session->error_msg); |
| 691 | session->error_msg = g_strdup(msg); |
| 692 | fprintf(stderr, "POP3: %s\n", msg);
|
| 693 | } else
|
| 694 | ok = PS_PROTOCOL; |
| 695 | |
| 696 | session->error_val = ok; |
| 697 | return ok;
|
| 698 | } |
| 699 | |
| 700 | static gint pop3_session_recv_msg(Session *session, const gchar *msg) |
| 701 | {
|
| 702 | Pop3Session *pop3_session = POP3_SESSION(session); |
| 703 | Pop3ErrorValue val = PS_SUCCESS; |
| 704 | const guchar *body;
|
| 705 | |
| 706 | body = msg; |
| 707 | if (pop3_session->state != POP3_GETRANGE_UIDL_RECV &&
|
| 708 | pop3_session->state != POP3_GETSIZE_LIST_RECV) {
|
| 709 | val = pop3_ok(pop3_session, msg); |
| 710 | if (val != PS_SUCCESS) {
|
| 711 | if (val != PS_NOTSUPPORTED) {
|
| 712 | pop3_session->state = POP3_ERROR; |
| 713 | return -1; |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | if (*body == '+' || *body == '-') |
| 718 | body++; |
| 719 | while (isalpha(*body))
|
| 720 | body++; |
| 721 | while (isspace(*body))
|
| 722 | body++; |
| 723 | } |
| 724 | |
| 725 | switch (pop3_session->state) {
|
| 726 | case POP3_READY:
|
| 727 | case POP3_GREETING:
|
| 728 | pop3_greeting_recv(pop3_session, body); |
| 729 | #if USE_SSL
|
| 730 | if (pop3_session->ac_prefs->ssl_pop == SSL_STARTTLS)
|
| 731 | pop3_stls_send(pop3_session); |
| 732 | else
|
| 733 | #endif
|
| 734 | if (pop3_session->ac_prefs->use_apop_auth)
|
| 735 | pop3_getauth_apop_send(pop3_session); |
| 736 | else
|
| 737 | pop3_getauth_user_send(pop3_session); |
| 738 | break;
|
| 739 | #if USE_SSL
|
| 740 | case POP3_STLS:
|
| 741 | if (pop3_stls_recv(pop3_session) != PS_SUCCESS)
|
| 742 | return -1; |
| 743 | if (pop3_session->ac_prefs->use_apop_auth)
|
| 744 | pop3_getauth_apop_send(pop3_session); |
| 745 | else
|
| 746 | pop3_getauth_user_send(pop3_session); |
| 747 | break;
|
| 748 | #endif
|
| 749 | case POP3_GETAUTH_USER:
|
| 750 | pop3_getauth_pass_send(pop3_session); |
| 751 | break;
|
| 752 | case POP3_GETAUTH_PASS:
|
| 753 | case POP3_GETAUTH_APOP:
|
| 754 | pop3_getrange_stat_send(pop3_session); |
| 755 | break;
|
| 756 | case POP3_GETRANGE_STAT:
|
| 757 | if (pop3_getrange_stat_recv(pop3_session, body) < 0) |
| 758 | return -1; |
| 759 | if (pop3_session->count > 0) |
| 760 | pop3_getrange_uidl_send(pop3_session); |
| 761 | else
|
| 762 | pop3_logout_send(pop3_session); |
| 763 | break;
|
| 764 | case POP3_GETRANGE_LAST:
|
| 765 | if (val == PS_NOTSUPPORTED)
|
| 766 | pop3_session->error_val = PS_SUCCESS; |
| 767 | else if (pop3_getrange_last_recv(pop3_session, body) < 0) |
| 768 | return -1; |
| 769 | if (pop3_session->cur_msg > 0) |
| 770 | pop3_getsize_list_send(pop3_session); |
| 771 | else
|
| 772 | pop3_logout_send(pop3_session); |
| 773 | break;
|
| 774 | case POP3_GETRANGE_UIDL:
|
| 775 | if (val == PS_NOTSUPPORTED) {
|
| 776 | pop3_session->error_val = PS_SUCCESS; |
| 777 | pop3_getrange_last_send(pop3_session); |
| 778 | } else {
|
| 779 | pop3_session->state = POP3_GETRANGE_UIDL_RECV; |
| 780 | session_recv_data(session, 0, ".\r\n"); |
| 781 | } |
| 782 | break;
|
| 783 | case POP3_GETSIZE_LIST:
|
| 784 | pop3_session->state = POP3_GETSIZE_LIST_RECV; |
| 785 | session_recv_data(session, 0, ".\r\n"); |
| 786 | break;
|
| 787 | case POP3_RETR:
|
| 788 | pop3_session->state = POP3_RETR_RECV; |
| 789 | session_recv_data(session, 0, ".\r\n"); |
| 790 | break;
|
| 791 | case POP3_DELETE:
|
| 792 | pop3_delete_recv(pop3_session); |
| 793 | if (pop3_session->cur_msg == pop3_session->count)
|
| 794 | pop3_logout_send(pop3_session); |
| 795 | else {
|
| 796 | pop3_session->cur_msg++; |
| 797 | if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
| 798 | return -1; |
| 799 | } |
| 800 | break;
|
| 801 | case POP3_LOGOUT:
|
| 802 | session_disconnect(session); |
| 803 | break;
|
| 804 | case POP3_ERROR:
|
| 805 | default:
|
| 806 | return -1; |
| 807 | } |
| 808 | |
| 809 | return 0; |
| 810 | } |
| 811 | |
| 812 | static gint pop3_session_recv_data_finished(Session *session, guchar *data,
|
| 813 | guint len) |
| 814 | {
|
| 815 | Pop3Session *pop3_session = POP3_SESSION(session); |
| 816 | Pop3ErrorValue val = PS_SUCCESS; |
| 817 | |
| 818 | switch (pop3_session->state) {
|
| 819 | case POP3_GETRANGE_UIDL_RECV:
|
| 820 | val = pop3_getrange_uidl_recv(pop3_session, data, len); |
| 821 | if (val == PS_SUCCESS) {
|
| 822 | if (pop3_session->new_msg_exist)
|
| 823 | pop3_getsize_list_send(pop3_session); |
| 824 | else
|
| 825 | pop3_logout_send(pop3_session); |
| 826 | } else
|
| 827 | return -1; |
| 828 | break;
|
| 829 | case POP3_GETSIZE_LIST_RECV:
|
| 830 | val = pop3_getsize_list_recv(pop3_session, data, len); |
| 831 | if (val == PS_SUCCESS) {
|
| 832 | if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
| 833 | return -1; |
| 834 | } else
|
| 835 | return -1; |
| 836 | break;
|
| 837 | case POP3_RETR_RECV:
|
| 838 | if (pop3_retr_recv(pop3_session, data, len) < 0) |
| 839 | return -1; |
| 840 | |
| 841 | if (pop3_session->msg[pop3_session->cur_msg].recv_time
|
| 842 | == RECV_TIME_DELETE || |
| 843 | (pop3_session->ac_prefs->rmmail && |
| 844 | pop3_session->ac_prefs->msg_leave_time == 0 &&
|
| 845 | pop3_session->msg[pop3_session->cur_msg].recv_time |
| 846 | != RECV_TIME_KEEP)) |
| 847 | pop3_delete_send(pop3_session); |
| 848 | else if (pop3_session->cur_msg == pop3_session->count) |
| 849 | pop3_logout_send(pop3_session); |
| 850 | else {
|
| 851 | pop3_session->cur_msg++; |
| 852 | if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
| 853 | return -1; |
| 854 | } |
| 855 | break;
|
| 856 | case POP3_ERROR:
|
| 857 | default:
|
| 858 | return -1; |
| 859 | } |
| 860 | |
| 861 | return 0; |
| 862 | } |