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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 "defs.h" |
| 25 | |
| 26 | #include <glib.h> |
| 27 | #include <glib/gi18n.h> |
| 28 | #include <stdio.h> |
| 29 | #include <string.h> |
| 30 | #include <stdarg.h> |
| 31 | #include <ctype.h> |
| 32 | #include <unistd.h> |
| 33 | #include <time.h> |
| 34 | #include <errno.h> |
| 35 | |
| 36 | #include "pop.h" |
| 37 | #include "md5.h" |
| 38 | #include "prefs_account.h" |
| 39 | #include "utils.h" |
| 40 | #include "recv.h" |
| 41 | |
| 42 | static gint pop3_greeting_recv (Pop3Session *session,
|
| 43 | const gchar *msg);
|
| 44 | static gint pop3_getauth_user_send (Pop3Session *session);
|
| 45 | static gint pop3_getauth_pass_send (Pop3Session *session);
|
| 46 | static gint pop3_getauth_apop_send (Pop3Session *session);
|
| 47 | #if USE_SSL
|
| 48 | static gint pop3_stls_send (Pop3Session *session);
|
| 49 | static gint pop3_stls_recv (Pop3Session *session);
|
| 50 | #endif
|
| 51 | static gint pop3_getrange_stat_send (Pop3Session *session);
|
| 52 | static gint pop3_getrange_stat_recv (Pop3Session *session,
|
| 53 | const gchar *msg);
|
| 54 | static gint pop3_getrange_last_send (Pop3Session *session);
|
| 55 | static gint pop3_getrange_last_recv (Pop3Session *session,
|
| 56 | const gchar *msg);
|
| 57 | static gint pop3_getrange_uidl_send (Pop3Session *session);
|
| 58 | static gint pop3_getrange_uidl_recv (Pop3Session *session,
|
| 59 | const gchar *data,
|
| 60 | guint len); |
| 61 | static gint pop3_getsize_list_send (Pop3Session *session);
|
| 62 | static gint pop3_getsize_list_recv (Pop3Session *session,
|
| 63 | const gchar *data,
|
| 64 | guint len); |
| 65 | static gint pop3_retr_send (Pop3Session *session);
|
| 66 | static gint pop3_retr_recv (Pop3Session *session,
|
| 67 | const gchar *data,
|
| 68 | guint len); |
| 69 | static gint pop3_delete_send (Pop3Session *session);
|
| 70 | static gint pop3_delete_recv (Pop3Session *session);
|
| 71 | static gint pop3_logout_send (Pop3Session *session);
|
| 72 | |
| 73 | static void pop3_gen_send (Pop3Session *session, |
| 74 | const gchar *format, ...);
|
| 75 | |
| 76 | static void pop3_session_destroy (Session *session); |
| 77 | |
| 78 | static gint pop3_write_msg_to_file (const gchar *file, |
| 79 | const gchar *data,
|
| 80 | guint len); |
| 81 | |
| 82 | static Pop3State pop3_lookup_next (Pop3Session *session);
|
| 83 | static Pop3ErrorValue pop3_ok (Pop3Session *session,
|
| 84 | const gchar *msg);
|
| 85 | |
| 86 | static gint pop3_session_recv_msg (Session *session,
|
| 87 | const gchar *msg);
|
| 88 | static gint pop3_session_recv_data_finished (Session *session,
|
| 89 | guchar *data, |
| 90 | guint len); |
| 91 | |
| 92 | |
| 93 | static gint pop3_greeting_recv(Pop3Session *session, const gchar *msg) |
| 94 | {
|
| 95 | session->state = POP3_GREETING; |
| 96 | |
| 97 | session->greeting = g_strdup(msg); |
| 98 | return PS_SUCCESS;
|
| 99 | } |
| 100 | |
| 101 | #if USE_SSL
|
| 102 | static gint pop3_stls_send(Pop3Session *session)
|
| 103 | {
|
| 104 | session->state = POP3_STLS; |
| 105 | pop3_gen_send(session, "STLS");
|
| 106 | return PS_SUCCESS;
|
| 107 | } |
| 108 | |
| 109 | static gint pop3_stls_recv(Pop3Session *session)
|
| 110 | {
|
| 111 | if (session_start_tls(SESSION(session)) < 0) { |
| 112 | session->error_val = PS_SOCKET; |
| 113 | return -1; |
| 114 | } |
| 115 | return PS_SUCCESS;
|
| 116 | } |
| 117 | #endif /* USE_SSL */ |
| 118 | |
| 119 | static gint pop3_getauth_user_send(Pop3Session *session)
|
| 120 | {
|
| 121 | g_return_val_if_fail(session->user != NULL, -1); |
| 122 | |
| 123 | session->state = POP3_GETAUTH_USER; |
| 124 | pop3_gen_send(session, "USER %s", session->user);
|
| 125 | return PS_SUCCESS;
|
| 126 | } |
| 127 | |
| 128 | static gint pop3_getauth_pass_send(Pop3Session *session)
|
| 129 | {
|
| 130 | g_return_val_if_fail(session->pass != NULL, -1); |
| 131 | |
| 132 | session->state = POP3_GETAUTH_PASS; |
| 133 | pop3_gen_send(session, "PASS %s", session->pass);
|
| 134 | return PS_SUCCESS;
|
| 135 | } |
| 136 | |
| 137 | static gint pop3_getauth_apop_send(Pop3Session *session)
|
| 138 | {
|
| 139 | gchar *start, *end; |
| 140 | gchar *apop_str; |
| 141 | gchar md5sum[33];
|
| 142 | |
| 143 | g_return_val_if_fail(session->user != NULL, -1); |
| 144 | g_return_val_if_fail(session->pass != NULL, -1); |
| 145 | |
| 146 | session->state = POP3_GETAUTH_APOP; |
| 147 | |
| 148 | if ((start = strchr(session->greeting, '<')) == NULL) { |
| 149 | log_warning(_("Required APOP timestamp not found "
|
| 150 | "in greeting\n"));
|
| 151 | session->error_val = PS_PROTOCOL; |
| 152 | return -1; |
| 153 | } |
| 154 | |
| 155 | if ((end = strchr(start, '>')) == NULL || end == start + 1) { |
| 156 | log_warning(_("Timestamp syntax error in greeting\n"));
|
| 157 | session->error_val = PS_PROTOCOL; |
| 158 | return -1; |
| 159 | } |
| 160 | |
| 161 | *(end + 1) = '\0'; |
| 162 | |
| 163 | apop_str = g_strconcat(start, session->pass, NULL);
|
| 164 | md5_hex_digest(md5sum, apop_str); |
| 165 | g_free(apop_str); |
| 166 | |
| 167 | pop3_gen_send(session, "APOP %s %s", session->user, md5sum);
|
| 168 | |
| 169 | return PS_SUCCESS;
|
| 170 | } |
| 171 | |
| 172 | static gint pop3_getrange_stat_send(Pop3Session *session)
|
| 173 | {
|
| 174 | session->state = POP3_GETRANGE_STAT; |
| 175 | pop3_gen_send(session, "STAT");
|
| 176 | return PS_SUCCESS;
|
| 177 | } |
| 178 | |
| 179 | static gint pop3_getrange_stat_recv(Pop3Session *session, const gchar *msg) |
| 180 | {
|
| 181 | if (sscanf(msg, "%d %d", &session->count, &session->total_bytes) != 2) { |
| 182 | log_warning(_("POP3 protocol error\n"));
|
| 183 | session->error_val = PS_PROTOCOL; |
| 184 | return -1; |
| 185 | } else {
|
| 186 | if (session->count == 0) { |
| 187 | session->uidl_is_valid = TRUE; |
| 188 | } else {
|
| 189 | session->msg = g_new0(Pop3MsgInfo, session->count + 1);
|
| 190 | session->cur_msg = 1;
|
| 191 | } |
| 192 | } |
| 193 | |
| 194 | return PS_SUCCESS;
|
| 195 | } |
| 196 | |
| 197 | static gint pop3_getrange_last_send(Pop3Session *session)
|
| 198 | {
|
| 199 | session->state = POP3_GETRANGE_LAST; |
| 200 | pop3_gen_send(session, "LAST");
|
| 201 | return PS_SUCCESS;
|
| 202 | } |
| 203 | |
| 204 | static gint pop3_getrange_last_recv(Pop3Session *session, const gchar *msg) |
| 205 | {
|
| 206 | gint last; |
| 207 | |
| 208 | if (sscanf(msg, "%d", &last) == 0) { |
| 209 | log_warning(_("POP3 protocol error\n"));
|
| 210 | session->error_val = PS_PROTOCOL; |
| 211 | return -1; |
| 212 | } else {
|
| 213 | if (session->count > last) {
|
| 214 | session->new_msg_exist = TRUE; |
| 215 | session->cur_msg = last + 1;
|
| 216 | } else
|
| 217 | session->cur_msg = 0;
|
| 218 | } |
| 219 | |
| 220 | return PS_SUCCESS;
|
| 221 | } |
| 222 | |
| 223 | static gint pop3_getrange_uidl_send(Pop3Session *session)
|
| 224 | {
|
| 225 | session->state = POP3_GETRANGE_UIDL; |
| 226 | pop3_gen_send(session, "UIDL");
|
| 227 | return PS_SUCCESS;
|
| 228 | } |
| 229 | |
| 230 | static gint pop3_getrange_uidl_recv(Pop3Session *session, const gchar *data, |
| 231 | guint len) |
| 232 | {
|
| 233 | gchar id[IDLEN + 1];
|
| 234 | gchar buf[POPBUFSIZE]; |
| 235 | gint buf_len; |
| 236 | gint num; |
| 237 | time_t recv_time; |
| 238 | const gchar *p = data;
|
| 239 | const gchar *lastp = data + len;
|
| 240 | const gchar *newline;
|
| 241 | |
| 242 | while (p < lastp) {
|
| 243 | if ((newline = memchr(p, '\r', lastp - p)) == NULL) |
| 244 | return -1; |
| 245 | buf_len = MIN(newline - p, sizeof(buf) - 1); |
| 246 | memcpy(buf, p, buf_len); |
| 247 | buf[buf_len] = '\0';
|
| 248 | |
| 249 | p = newline + 1;
|
| 250 | if (p < lastp && *p == '\n') p++; |
| 251 | |
| 252 | if (sscanf(buf, "%d %" Xstr(IDLEN) "s", &num, id) != 2 || |
| 253 | num <= 0 || num > session->count) {
|
| 254 | log_warning(_("invalid UIDL response: %s\n"), buf);
|
| 255 | continue;
|
| 256 | } |
| 257 | |
| 258 | session->msg[num].uidl = g_strdup(id); |
| 259 | |
| 260 | recv_time = (time_t)g_hash_table_lookup(session->uidl_table, id); |
| 261 | session->msg[num].recv_time = recv_time; |
| 262 | |
| 263 | if (!session->ac_prefs->getall && recv_time != RECV_TIME_NONE)
|
| 264 | session->msg[num].received = TRUE; |
| 265 | |
| 266 | if (!session->new_msg_exist &&
|
| 267 | (session->ac_prefs->getall || recv_time == RECV_TIME_NONE || |
| 268 | session->ac_prefs->rmmail)) {
|
| 269 | session->cur_msg = num; |
| 270 | session->new_msg_exist = TRUE; |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | session->uidl_is_valid = TRUE; |
| 275 | return PS_SUCCESS;
|
| 276 | } |
| 277 | |
| 278 | static gint pop3_getsize_list_send(Pop3Session *session)
|
| 279 | {
|
| 280 | session->state = POP3_GETSIZE_LIST; |
| 281 | pop3_gen_send(session, "LIST");
|
| 282 | return PS_SUCCESS;
|
| 283 | } |
| 284 | |
| 285 | static gint pop3_getsize_list_recv(Pop3Session *session, const gchar *data, |
| 286 | guint len) |
| 287 | {
|
| 288 | gchar buf[POPBUFSIZE]; |
| 289 | gint buf_len; |
| 290 | guint num, size; |
| 291 | const gchar *p = data;
|
| 292 | const gchar *lastp = data + len;
|
| 293 | const gchar *newline;
|
| 294 | |
| 295 | while (p < lastp) {
|
| 296 | if ((newline = memchr(p, '\r', lastp - p)) == NULL) |
| 297 | return -1; |
| 298 | buf_len = MIN(newline - p, sizeof(buf) - 1); |
| 299 | memcpy(buf, p, buf_len); |
| 300 | buf[buf_len] = '\0';
|
| 301 | |
| 302 | p = newline + 1;
|
| 303 | if (p < lastp && *p == '\n') p++; |
| 304 | |
| 305 | if (sscanf(buf, "%u %u", &num, &size) != 2) { |
| 306 | session->error_val = PS_PROTOCOL; |
| 307 | return -1; |
| 308 | } |
| 309 | |
| 310 | if (num > 0 && num <= session->count) |
| 311 | session->msg[num].size = size; |
| 312 | if (num > 0 && num < session->cur_msg) |
| 313 | session->cur_total_bytes += size; |
| 314 | } |
| 315 | |
| 316 | return PS_SUCCESS;
|
| 317 | } |
| 318 | |
| 319 | static gint pop3_retr_send(Pop3Session *session)
|
| 320 | {
|
| 321 | session->state = POP3_RETR; |
| 322 | pop3_gen_send(session, "RETR %d", session->cur_msg);
|
| 323 | return PS_SUCCESS;
|
| 324 | } |
| 325 | |
| 326 | static gint pop3_retr_recv(Pop3Session *session, const gchar *data, guint len) |
| 327 | {
|
| 328 | gchar *file; |
| 329 | gint drop_ok; |
| 330 | |
| 331 | file = get_tmp_file(); |
| 332 | if (pop3_write_msg_to_file(file, data, len) < 0) { |
| 333 | g_free(file); |
| 334 | session->error_val = PS_IOERR; |
| 335 | return -1; |
| 336 | } |
| 337 | |
| 338 | drop_ok = session->drop_message(session, file); |
| 339 | unlink(file); |
| 340 | g_free(file); |
| 341 | if (drop_ok < 0) { |
| 342 | session->error_val = PS_IOERR; |
| 343 | return -1; |
| 344 | } |
| 345 | |
| 346 | session->cur_total_bytes += session->msg[session->cur_msg].size; |
| 347 | session->cur_total_recv_bytes += session->msg[session->cur_msg].size; |
| 348 | session->cur_total_num++; |
| 349 | |
| 350 | session->msg[session->cur_msg].received = TRUE; |
| 351 | session->msg[session->cur_msg].recv_time = |
| 352 | drop_ok == DROP_DONT_RECEIVE ? RECV_TIME_KEEP |
| 353 | : drop_ok == DROP_DELETE ? RECV_TIME_DELETE |
| 354 | : session->current_time; |
| 355 | |
| 356 | return PS_SUCCESS;
|
| 357 | } |
| 358 | |
| 359 | static gint pop3_delete_send(Pop3Session *session)
|
| 360 | {
|
| 361 | session->state = POP3_DELETE; |
| 362 | pop3_gen_send(session, "DELE %d", session->cur_msg);
|
| 363 | return PS_SUCCESS;
|
| 364 | } |
| 365 | |
| 366 | static gint pop3_delete_recv(Pop3Session *session)
|
| 367 | {
|
| 368 | session->msg[session->cur_msg].deleted = TRUE; |
| 369 | return PS_SUCCESS;
|
| 370 | } |
| 371 | |
| 372 | static gint pop3_logout_send(Pop3Session *session)
|
| 373 | {
|
| 374 | session->state = POP3_LOGOUT; |
| 375 | pop3_gen_send(session, "QUIT");
|
| 376 | return PS_SUCCESS;
|
| 377 | } |
| 378 | |
| 379 | static void pop3_gen_send(Pop3Session *session, const gchar *format, ...) |
| 380 | {
|
| 381 | gchar buf[POPBUFSIZE + 1];
|
| 382 | va_list args; |
| 383 | |
| 384 | va_start(args, format); |
| 385 | g_vsnprintf(buf, sizeof(buf) - 2, format, args); |
| 386 | va_end(args); |
| 387 | |
| 388 | if (!g_ascii_strncasecmp(buf, "PASS ", 5)) |
| 389 | log_print("POP3> PASS ********\n");
|
| 390 | else
|
| 391 | log_print("POP3> %s\n", buf);
|
| 392 | |
| 393 | session_send_msg(SESSION(session), SESSION_MSG_NORMAL, buf); |
| 394 | } |
| 395 | |
| 396 | Session *pop3_session_new(PrefsAccount *account) |
| 397 | {
|
| 398 | Pop3Session *session; |
| 399 | |
| 400 | g_return_val_if_fail(account != NULL, NULL); |
| 401 | |
| 402 | session = g_new0(Pop3Session, 1);
|
| 403 | |
| 404 | session_init(SESSION(session)); |
| 405 | |
| 406 | SESSION(session)->type = SESSION_POP3; |
| 407 | |
| 408 | SESSION(session)->recv_msg = pop3_session_recv_msg; |
| 409 | SESSION(session)->recv_data_finished = pop3_session_recv_data_finished; |
| 410 | SESSION(session)->send_data_finished = NULL;
|
| 411 | |
| 412 | SESSION(session)->destroy = pop3_session_destroy; |
| 413 | |
| 414 | session->state = POP3_READY; |
| 415 | session->ac_prefs = account; |
| 416 | session->uidl_table = pop3_get_uidl_table(account); |
| 417 | session->current_time = time(NULL);
|
| 418 | session->error_val = PS_SUCCESS; |
| 419 | session->error_msg = NULL;
|
| 420 | |
| 421 | return SESSION(session);
|
| 422 | } |
| 423 | |
| 424 | static void pop3_session_destroy(Session *session) |
| 425 | {
|
| 426 | Pop3Session *pop3_session = POP3_SESSION(session); |
| 427 | gint n; |
| 428 | |
| 429 | g_return_if_fail(session != NULL);
|
| 430 | |
| 431 | for (n = 1; n <= pop3_session->count; n++) |
| 432 | g_free(pop3_session->msg[n].uidl); |
| 433 | g_free(pop3_session->msg); |
| 434 | |
| 435 | if (pop3_session->uidl_table) {
|
| 436 | hash_free_strings(pop3_session->uidl_table); |
| 437 | g_hash_table_destroy(pop3_session->uidl_table); |
| 438 | } |
| 439 | |
| 440 | g_free(pop3_session->greeting); |
| 441 | g_free(pop3_session->user); |
| 442 | g_free(pop3_session->pass); |
| 443 | g_free(pop3_session->error_msg); |
| 444 | } |
| 445 | |
| 446 | GHashTable *pop3_get_uidl_table(PrefsAccount *ac_prefs) |
| 447 | {
|
| 448 | GHashTable *table; |
| 449 | gchar *path; |
| 450 | FILE *fp; |
| 451 | gchar buf[POPBUFSIZE]; |
| 452 | gchar uidl[POPBUFSIZE]; |
| 453 | time_t recv_time; |
| 454 | time_t now; |
| 455 | |
| 456 | table = g_hash_table_new(g_str_hash, g_str_equal); |
| 457 | |
| 458 | path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, |
| 459 | UIDL_DIR, G_DIR_SEPARATOR_S, ac_prefs->recv_server, |
| 460 | "-", ac_prefs->userid, NULL); |
| 461 | if ((fp = fopen(path, "rb")) == NULL) { |
| 462 | if (ENOENT != errno) FILE_OP_ERROR(path, "fopen"); |
| 463 | g_free(path); |
| 464 | return table;
|
| 465 | } |
| 466 | g_free(path); |
| 467 | |
| 468 | now = time(NULL);
|
| 469 | |
| 470 | while (fgets(buf, sizeof(buf), fp) != NULL) { |
| 471 | strretchomp(buf); |
| 472 | recv_time = RECV_TIME_NONE; |
| 473 | if (sscanf(buf, "%s\t%ld", uidl, &recv_time) != 2) { |
| 474 | if (sscanf(buf, "%s", uidl) != 1) |
| 475 | continue;
|
| 476 | else
|
| 477 | recv_time = now; |
| 478 | } |
| 479 | if (recv_time == RECV_TIME_NONE)
|
| 480 | recv_time = RECV_TIME_RECEIVED; |
| 481 | g_hash_table_insert(table, g_strdup(uidl), |
| 482 | GINT_TO_POINTER(recv_time)); |
| 483 | } |
| 484 | |
| 485 | fclose(fp); |
| 486 | return table;
|
| 487 | } |
| 488 | |
| 489 | gint pop3_write_uidl_list(Pop3Session *session) |
| 490 | {
|
| 491 | gchar *path; |
| 492 | FILE *fp; |
| 493 | Pop3MsgInfo *msg; |
| 494 | gint n; |
| 495 | |
| 496 | if (!session->uidl_is_valid) return 0; |
| 497 | |
| 498 | path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, |
| 499 | "uidl", G_DIR_SEPARATOR_S,
|
| 500 | session->ac_prefs->recv_server, |
| 501 | "-", session->ac_prefs->userid, NULL); |
| 502 | if ((fp = fopen(path, "wb")) == NULL) { |
| 503 | FILE_OP_ERROR(path, "fopen");
|
| 504 | g_free(path); |
| 505 | return -1; |
| 506 | } |
| 507 | |
| 508 | for (n = 1; n <= session->count; n++) { |
| 509 | msg = &session->msg[n]; |
| 510 | if (msg->uidl && msg->received && !msg->deleted)
|
| 511 | fprintf(fp, "%s\t%ld\n", msg->uidl, msg->recv_time);
|
| 512 | } |
| 513 | |
| 514 | if (fclose(fp) == EOF) FILE_OP_ERROR(path, "fclose"); |
| 515 | g_free(path); |
| 516 | |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | static gint pop3_write_msg_to_file(const gchar *file, const gchar *data, |
| 521 | guint len) |
| 522 | {
|
| 523 | FILE *fp; |
| 524 | const gchar *prev, *cur;
|
| 525 | |
| 526 | g_return_val_if_fail(file != NULL, -1); |
| 527 | |
| 528 | if ((fp = fopen(file, "wb")) == NULL) { |
| 529 | FILE_OP_ERROR(file, "fopen");
|
| 530 | return -1; |
| 531 | } |
| 532 | |
| 533 | if (change_file_mode_rw(fp, file) < 0) |
| 534 | FILE_OP_ERROR(file, "chmod");
|
| 535 | |
| 536 | /* +------------------+----------------+--------------------------+ *
|
| 537 | * ^data ^prev ^cur data+len-1^ */ |
| 538 | |
| 539 | prev = data; |
| 540 | while ((cur = (gchar *)my_memmem(prev, len - (prev - data), "\r\n", 2)) |
| 541 | != NULL) {
|
| 542 | if ((cur > prev && fwrite(prev, cur - prev, 1, fp) < 1) || |
| 543 | fputc('\n', fp) == EOF) { |
| 544 | FILE_OP_ERROR(file, "fwrite");
|
| 545 | g_warning("can't write to file: %s\n", file);
|
| 546 | fclose(fp); |
| 547 | unlink(file); |
| 548 | return -1; |
| 549 | } |
| 550 | |
| 551 | if (cur == data + len - 1) { |
| 552 | prev = cur + 1;
|
| 553 | break;
|
| 554 | } |
| 555 | |
| 556 | if (*(cur + 1) == '\n') |
| 557 | prev = cur + 2;
|
| 558 | else
|
| 559 | prev = cur + 1;
|
| 560 | |
| 561 | if (prev - data < len - 1 && *prev == '.' && *(prev + 1) == '.') |
| 562 | prev++; |
| 563 | |
| 564 | if (prev - data >= len)
|
| 565 | break;
|
| 566 | } |
| 567 | |
| 568 | if (prev - data < len &&
|
| 569 | fwrite(prev, len - (prev - data), 1, fp) < 1) { |
| 570 | FILE_OP_ERROR(file, "fwrite");
|
| 571 | g_warning("can't write to file: %s\n", file);
|
| 572 | fclose(fp); |
| 573 | unlink(file); |
| 574 | return -1; |
| 575 | } |
| 576 | if (data[len - 1] != '\r' && data[len - 1] != '\n') { |
| 577 | if (fputc('\n', fp) == EOF) { |
| 578 | FILE_OP_ERROR(file, "fputc");
|
| 579 | g_warning("can't write to file: %s\n", file);
|
| 580 | fclose(fp); |
| 581 | unlink(file); |
| 582 | return -1; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | if (fclose(fp) == EOF) { |
| 587 | FILE_OP_ERROR(file, "fclose");
|
| 588 | unlink(file); |
| 589 | return -1; |
| 590 | } |
| 591 | |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | static Pop3State pop3_lookup_next(Pop3Session *session)
|
| 596 | {
|
| 597 | Pop3MsgInfo *msg; |
| 598 | PrefsAccount *ac = session->ac_prefs; |
| 599 | gint size; |
| 600 | gboolean size_limit_over; |
| 601 | |
| 602 | for (;;) {
|
| 603 | msg = &session->msg[session->cur_msg]; |
| 604 | size = msg->size; |
| 605 | size_limit_over = |
| 606 | (ac->enable_size_limit && |
| 607 | ac->size_limit > 0 &&
|
| 608 | size > ac->size_limit * 1024);
|
| 609 | |
| 610 | if (msg->recv_time == RECV_TIME_DELETE ||
|
| 611 | (ac->rmmail && |
| 612 | msg->recv_time != RECV_TIME_NONE && |
| 613 | msg->recv_time != RECV_TIME_KEEP && |
| 614 | session->current_time - msg->recv_time >= |
| 615 | ac->msg_leave_time * 24 * 60 * 60)) { |
| 616 | log_print(_("POP3: Deleting expired message %d\n"),
|
| 617 | session->cur_msg); |
| 618 | pop3_delete_send(session); |
| 619 | return POP3_DELETE;
|
| 620 | } |
| 621 | |
| 622 | if (size_limit_over)
|
| 623 | log_print |
| 624 | (_("POP3: Skipping message %d (%d bytes)\n"),
|
| 625 | session->cur_msg, size); |
| 626 | |
| 627 | if (size == 0 || msg->received || size_limit_over) { |
| 628 | session->cur_total_bytes += size; |
| 629 | if (session->cur_msg == session->count) {
|
| 630 | pop3_logout_send(session); |
| 631 | return POP3_LOGOUT;
|
| 632 | } else
|
| 633 | session->cur_msg++; |
| 634 | } else
|
| 635 | break;
|
| 636 | } |
| 637 | |
| 638 | pop3_retr_send(session); |
| 639 | return POP3_RETR;
|
| 640 | } |
| 641 | |
| 642 | static Pop3ErrorValue pop3_ok(Pop3Session *session, const gchar *msg) |
| 643 | {
|
| 644 | Pop3ErrorValue ok; |
| 645 | |
| 646 | log_print("POP3< %s\n", msg);
|
| 647 | |
| 648 | if (!strncmp(msg, "+OK", 3)) |
| 649 | ok = PS_SUCCESS; |
| 650 | else if (!strncmp(msg, "-ERR", 4)) { |
| 651 | if (strstr(msg + 4, "lock") || |
| 652 | strstr(msg + 4, "Lock") || |
| 653 | strstr(msg + 4, "LOCK") || |
| 654 | strstr(msg + 4, "wait")) { |
| 655 | log_warning(_("mailbox is locked\n"));
|
| 656 | ok = PS_LOCKBUSY; |
| 657 | } else if (strcasestr(msg + 4, "timeout")) { |
| 658 | log_warning(_("session timeout\n"));
|
| 659 | ok = PS_ERROR; |
| 660 | } else {
|
| 661 | switch (session->state) {
|
| 662 | #if USE_SSL
|
| 663 | case POP3_STLS:
|
| 664 | log_warning(_("can't start TLS session\n"));
|
| 665 | ok = PS_ERROR; |
| 666 | break;
|
| 667 | #endif
|
| 668 | case POP3_GETAUTH_USER:
|
| 669 | case POP3_GETAUTH_PASS:
|
| 670 | case POP3_GETAUTH_APOP:
|
| 671 | log_warning(_("error occurred on authentication\n"));
|
| 672 | ok = PS_AUTHFAIL; |
| 673 | break;
|
| 674 | case POP3_GETRANGE_LAST:
|
| 675 | case POP3_GETRANGE_UIDL:
|
| 676 | log_warning(_("command not supported\n"));
|
| 677 | ok = PS_NOTSUPPORTED; |
| 678 | break;
|
| 679 | default:
|
| 680 | log_warning(_("error occurred on POP3 session\n"));
|
| 681 | ok = PS_ERROR; |
| 682 | } |
| 683 | } |
| 684 | |
| 685 | g_free(session->error_msg); |
| 686 | session->error_msg = g_strdup(msg); |
| 687 | fprintf(stderr, "POP3: %s\n", msg);
|
| 688 | } else
|
| 689 | ok = PS_PROTOCOL; |
| 690 | |
| 691 | session->error_val = ok; |
| 692 | return ok;
|
| 693 | } |
| 694 | |
| 695 | static gint pop3_session_recv_msg(Session *session, const gchar *msg) |
| 696 | {
|
| 697 | Pop3Session *pop3_session = POP3_SESSION(session); |
| 698 | Pop3ErrorValue val = PS_SUCCESS; |
| 699 | const guchar *body;
|
| 700 | |
| 701 | body = msg; |
| 702 | if (pop3_session->state != POP3_GETRANGE_UIDL_RECV &&
|
| 703 | pop3_session->state != POP3_GETSIZE_LIST_RECV) {
|
| 704 | val = pop3_ok(pop3_session, msg); |
| 705 | if (val != PS_SUCCESS) {
|
| 706 | if (val != PS_NOTSUPPORTED) {
|
| 707 | pop3_session->state = POP3_ERROR; |
| 708 | return -1; |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | if (*body == '+' || *body == '-') |
| 713 | body++; |
| 714 | while (isalpha(*body))
|
| 715 | body++; |
| 716 | while (isspace(*body))
|
| 717 | body++; |
| 718 | } |
| 719 | |
| 720 | switch (pop3_session->state) {
|
| 721 | case POP3_READY:
|
| 722 | case POP3_GREETING:
|
| 723 | pop3_greeting_recv(pop3_session, body); |
| 724 | #if USE_SSL
|
| 725 | if (pop3_session->ac_prefs->ssl_pop == SSL_STARTTLS)
|
| 726 | pop3_stls_send(pop3_session); |
| 727 | else
|
| 728 | #endif
|
| 729 | if (pop3_session->ac_prefs->use_apop_auth)
|
| 730 | pop3_getauth_apop_send(pop3_session); |
| 731 | else
|
| 732 | pop3_getauth_user_send(pop3_session); |
| 733 | break;
|
| 734 | #if USE_SSL
|
| 735 | case POP3_STLS:
|
| 736 | if (pop3_stls_recv(pop3_session) != PS_SUCCESS)
|
| 737 | return -1; |
| 738 | if (pop3_session->ac_prefs->use_apop_auth)
|
| 739 | pop3_getauth_apop_send(pop3_session); |
| 740 | else
|
| 741 | pop3_getauth_user_send(pop3_session); |
| 742 | break;
|
| 743 | #endif
|
| 744 | case POP3_GETAUTH_USER:
|
| 745 | pop3_getauth_pass_send(pop3_session); |
| 746 | break;
|
| 747 | case POP3_GETAUTH_PASS:
|
| 748 | case POP3_GETAUTH_APOP:
|
| 749 | pop3_getrange_stat_send(pop3_session); |
| 750 | break;
|
| 751 | case POP3_GETRANGE_STAT:
|
| 752 | if (pop3_getrange_stat_recv(pop3_session, body) < 0) |
| 753 | return -1; |
| 754 | if (pop3_session->count > 0) |
| 755 | pop3_getrange_uidl_send(pop3_session); |
| 756 | else
|
| 757 | pop3_logout_send(pop3_session); |
| 758 | break;
|
| 759 | case POP3_GETRANGE_LAST:
|
| 760 | if (val == PS_NOTSUPPORTED)
|
| 761 | pop3_session->error_val = PS_SUCCESS; |
| 762 | else if (pop3_getrange_last_recv(pop3_session, body) < 0) |
| 763 | return -1; |
| 764 | if (pop3_session->cur_msg > 0) |
| 765 | pop3_getsize_list_send(pop3_session); |
| 766 | else
|
| 767 | pop3_logout_send(pop3_session); |
| 768 | break;
|
| 769 | case POP3_GETRANGE_UIDL:
|
| 770 | if (val == PS_NOTSUPPORTED) {
|
| 771 | pop3_session->error_val = PS_SUCCESS; |
| 772 | pop3_getrange_last_send(pop3_session); |
| 773 | } else {
|
| 774 | pop3_session->state = POP3_GETRANGE_UIDL_RECV; |
| 775 | session_recv_data(session, 0, ".\r\n"); |
| 776 | } |
| 777 | break;
|
| 778 | case POP3_GETSIZE_LIST:
|
| 779 | pop3_session->state = POP3_GETSIZE_LIST_RECV; |
| 780 | session_recv_data(session, 0, ".\r\n"); |
| 781 | break;
|
| 782 | case POP3_RETR:
|
| 783 | pop3_session->state = POP3_RETR_RECV; |
| 784 | session_recv_data(session, 0, ".\r\n"); |
| 785 | break;
|
| 786 | case POP3_DELETE:
|
| 787 | pop3_delete_recv(pop3_session); |
| 788 | if (pop3_session->cur_msg == pop3_session->count)
|
| 789 | pop3_logout_send(pop3_session); |
| 790 | else {
|
| 791 | pop3_session->cur_msg++; |
| 792 | if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
| 793 | return -1; |
| 794 | } |
| 795 | break;
|
| 796 | case POP3_LOGOUT:
|
| 797 | session_disconnect(session); |
| 798 | break;
|
| 799 | case POP3_ERROR:
|
| 800 | default:
|
| 801 | return -1; |
| 802 | } |
| 803 | |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | static gint pop3_session_recv_data_finished(Session *session, guchar *data,
|
| 808 | guint len) |
| 809 | {
|
| 810 | Pop3Session *pop3_session = POP3_SESSION(session); |
| 811 | Pop3ErrorValue val = PS_SUCCESS; |
| 812 | |
| 813 | switch (pop3_session->state) {
|
| 814 | case POP3_GETRANGE_UIDL_RECV:
|
| 815 | val = pop3_getrange_uidl_recv(pop3_session, data, len); |
| 816 | if (val == PS_SUCCESS) {
|
| 817 | if (pop3_session->new_msg_exist)
|
| 818 | pop3_getsize_list_send(pop3_session); |
| 819 | else
|
| 820 | pop3_logout_send(pop3_session); |
| 821 | } else
|
| 822 | return -1; |
| 823 | break;
|
| 824 | case POP3_GETSIZE_LIST_RECV:
|
| 825 | val = pop3_getsize_list_recv(pop3_session, data, len); |
| 826 | if (val == PS_SUCCESS) {
|
| 827 | if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
| 828 | return -1; |
| 829 | } else
|
| 830 | return -1; |
| 831 | break;
|
| 832 | case POP3_RETR_RECV:
|
| 833 | if (pop3_retr_recv(pop3_session, data, len) < 0) |
| 834 | return -1; |
| 835 | |
| 836 | if (pop3_session->msg[pop3_session->cur_msg].recv_time
|
| 837 | == RECV_TIME_DELETE || |
| 838 | (pop3_session->ac_prefs->rmmail && |
| 839 | pop3_session->ac_prefs->msg_leave_time == 0 &&
|
| 840 | pop3_session->msg[pop3_session->cur_msg].recv_time |
| 841 | != RECV_TIME_KEEP)) |
| 842 | pop3_delete_send(pop3_session); |
| 843 | else if (pop3_session->cur_msg == pop3_session->count) |
| 844 | pop3_logout_send(pop3_session); |
| 845 | else {
|
| 846 | pop3_session->cur_msg++; |
| 847 | if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
| 848 | return -1; |
| 849 | } |
| 850 | break;
|
| 851 | case POP3_ERROR:
|
| 852 | default:
|
| 853 | return -1; |
| 854 | } |
| 855 | |
| 856 | return 0; |
| 857 | } |