masqmail-0.2

annotate src/smtp_out.c @ 163:06525982a56c

find changesets by author, revision, files, or words in the commit message
we need at least 32 bits, so let's take a long Solar Designer explained to me that it was int for better performance
author meillo@marmaro.de
date Sun, 18 Jul 2010 22:03:08 +0200
parents 1e2fd87d58ea
children 349518b940db
rev   line source
meillo@0 1 /* smtp_out.c, Copyright (C) 1999-2001 Oliver Kurth,
meillo@0 2 *
meillo@0 3 * This program is free software; you can redistribute it and/or modify
meillo@0 4 * it under the terms of the GNU General Public License as published by
meillo@0 5 * the Free Software Foundation; either version 2 of the License, or
meillo@0 6 * (at your option) any later version.
meillo@10 7 *
meillo@0 8 * This program is distributed in the hope that it will be useful,
meillo@0 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 11 * GNU General Public License for more details.
meillo@0 12 *
meillo@0 13 * You should have received a copy of the GNU General Public License
meillo@0 14 * along with this program; if not, write to the Free Software
meillo@0 15 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
meillo@0 16 */
meillo@0 17
meillo@0 18 /*
meillo@0 19 send bugs to: kurth@innominate.de
meillo@0 20 */
meillo@0 21
meillo@0 22 /*
meillo@0 23 I always forget these rfc numbers:
meillo@0 24 RFC 821 (SMTP)
meillo@0 25 RFC 1869 (ESMTP)
meillo@0 26 RFC 1870 (ESMTP SIZE)
meillo@0 27 RFC 2197 (ESMTP PIPELINE)
meillo@0 28 RFC 2554 (ESMTP AUTH)
meillo@0 29 */
meillo@0 30
meillo@0 31 #include "masqmail.h"
meillo@0 32 #include "smtp_out.h"
meillo@0 33 #include "readsock.h"
meillo@0 34
meillo@0 35 #ifdef ENABLE_AUTH
meillo@0 36
meillo@0 37 #ifdef USE_LIB_CRYPTO
meillo@0 38 #include <openssl/hmac.h>
meillo@0 39 #include <openssl/md5.h>
meillo@0 40 #include <openssl/evp.h>
meillo@0 41 #else
meillo@0 42 #include "md5/md5.h"
meillo@0 43 #include "md5/hmac_md5.h"
meillo@0 44 #endif
meillo@0 45
meillo@0 46 #include "base64/base64.h"
meillo@0 47 #endif
meillo@0 48
meillo@10 49 void
meillo@10 50 destroy_smtpbase(smtp_base * psb)
meillo@0 51 {
meillo@10 52 fclose(psb->in);
meillo@10 53 fclose(psb->out);
meillo@0 54
meillo@10 55 close(psb->sock);
meillo@0 56
meillo@10 57 if (psb->helo_name)
meillo@10 58 g_free(psb->helo_name);
meillo@10 59 if (psb->buffer)
meillo@10 60 g_free(psb->buffer);
meillo@10 61 if (psb->auth_names)
meillo@10 62 g_strfreev(psb->auth_names);
meillo@0 63
meillo@10 64 if (psb->auth_name)
meillo@10 65 g_free(psb->auth_name);
meillo@10 66 if (psb->auth_login)
meillo@10 67 g_free(psb->auth_login);
meillo@10 68 if (psb->auth_secret)
meillo@10 69 g_free(psb->auth_secret);
meillo@0 70 }
meillo@0 71
meillo@10 72 gchar*
meillo@10 73 set_heloname(smtp_base * psb, gchar * default_name, gboolean do_correct)
meillo@0 74 {
meillo@10 75 struct sockaddr_in sname;
meillo@10 76 int len = sizeof(struct sockaddr_in);
meillo@10 77 struct hostent *host_entry;
meillo@0 78
meillo@10 79 if (do_correct) {
meillo@10 80 getsockname(psb->sock, (struct sockaddr *) (&sname), &len);
meillo@10 81 DEBUG(5) debugf("socket: name.sin_addr = %s\n", inet_ntoa(sname.sin_addr));
meillo@10 82 host_entry = gethostbyaddr((const char *) &(sname.sin_addr), sizeof(sname.sin_addr), AF_INET);
meillo@10 83 if (host_entry) {
meillo@10 84 psb->helo_name = g_strdup(host_entry->h_name);
meillo@10 85 } else {
meillo@10 86 /* we failed to look up our own name. Instead of giving our local hostname,
meillo@10 87 we may give our IP number to show the server that we are at least
meillo@10 88 willing to be honest. For the really picky ones. */
meillo@10 89 DEBUG(5) debugf("failed to look up own host name.\n");
meillo@10 90 psb->helo_name = g_strdup_printf("[%s]", inet_ntoa(sname.sin_addr));
meillo@10 91 }
meillo@10 92 DEBUG(5) debugf("helo_name = %s\n", psb->helo_name);
meillo@10 93 }
meillo@10 94 if (psb->helo_name == NULL) {
meillo@10 95 psb->helo_name = g_strdup(default_name);
meillo@10 96 }
meillo@10 97 return psb->helo_name;
meillo@10 98 }
meillo@0 99
meillo@0 100 #ifdef ENABLE_AUTH
meillo@0 101
meillo@10 102 gboolean
meillo@10 103 set_auth(smtp_base * psb, gchar * name, gchar * login, gchar * secret)
meillo@0 104 {
meillo@10 105 if ((strcasecmp(name, "CRAM-MD5") == 0) || (strcasecmp(name, "LOGIN") == 0)) {
meillo@10 106 psb->auth_name = g_strdup(name);
meillo@10 107 psb->auth_login = g_strdup(login);
meillo@10 108 psb->auth_secret = g_strdup(secret);
meillo@10 109
meillo@10 110 return TRUE;
meillo@10 111 }
meillo@10 112 return FALSE;
meillo@0 113 }
meillo@0 114
meillo@0 115 #endif
meillo@0 116
meillo@10 117 static smtp_base*
meillo@10 118 create_smtpbase(gint sock)
meillo@0 119 {
meillo@10 120 gint dup_sock;
meillo@0 121
meillo@10 122 smtp_base *psb = (smtp_base *) g_malloc(sizeof(smtp_base));
meillo@0 123
meillo@10 124 psb->sock = sock;
meillo@0 125
meillo@10 126 psb->use_esmtp = FALSE;
meillo@10 127 psb->use_size = FALSE;
meillo@10 128 psb->use_pipelining = FALSE;
meillo@10 129 psb->use_auth = FALSE;
meillo@0 130
meillo@10 131 psb->max_size = 0;
meillo@10 132 psb->auth_names = NULL;
meillo@0 133
meillo@10 134 psb->buffer = (gchar *) g_malloc(SMTP_BUF_LEN);
meillo@0 135
meillo@10 136 dup_sock = dup(sock);
meillo@10 137 psb->out = fdopen(sock, "w");
meillo@10 138 psb->in = fdopen(dup_sock, "r");
meillo@0 139
meillo@10 140 psb->error = smtp_ok;
meillo@0 141
meillo@10 142 psb->helo_name = NULL;
meillo@0 143
meillo@10 144 psb->auth_name = psb->auth_login = psb->auth_secret = NULL;
meillo@10 145
meillo@10 146 return psb;
meillo@0 147 }
meillo@0 148
meillo@10 149 static gboolean
meillo@10 150 read_response(smtp_base * psb, int timeout)
meillo@0 151 {
meillo@10 152 gint buf_pos = 0;
meillo@10 153 gchar code[5];
meillo@10 154 gint i, len;
meillo@0 155
meillo@10 156 do {
meillo@10 157 len = read_sockline(psb->in, &(psb->buffer[buf_pos]), SMTP_BUF_LEN - buf_pos, timeout, READSOCKL_CHUG);
meillo@10 158 if (len == -3) {
meillo@10 159 psb->error = smtp_timeout;
meillo@10 160 return FALSE;
meillo@10 161 } else if (len == -2) {
meillo@10 162 psb->error = smtp_syntax;
meillo@10 163 return FALSE;
meillo@10 164 } else if (len == -1) {
meillo@10 165 psb->error = smtp_eof;
meillo@10 166 return FALSE;
meillo@10 167 }
meillo@10 168 for (i = 0; i < 4; i++)
meillo@10 169 code[i] = psb->buffer[buf_pos + i];
meillo@15 170 code[i] = '\0';
meillo@10 171 psb->last_code = atoi(code);
meillo@0 172
meillo@10 173 buf_pos += len;
meillo@0 174
meillo@10 175 } while (code[3] == '-');
meillo@0 176
meillo@10 177 return TRUE;
meillo@0 178 }
meillo@0 179
meillo@10 180 static gboolean
meillo@10 181 check_response(smtp_base * psb, gboolean after_data)
meillo@0 182 {
meillo@10 183 char c = psb->buffer[0];
meillo@0 184
meillo@10 185 if (((c == '2') && !after_data) || ((c == '3') && after_data)) {
meillo@10 186 psb->error = smtp_ok;
meillo@10 187 DEBUG(6) debugf("response OK:'%s' after_date = %d\n", psb->buffer, (int) after_data);
meillo@10 188 return TRUE;
meillo@10 189 } else {
meillo@10 190 if (c == '4')
meillo@10 191 psb->error = smtp_trylater;
meillo@10 192 else if (c == '5')
meillo@10 193 psb->error = smtp_fail;
meillo@10 194 else
meillo@10 195 psb->error = smtp_syntax;
meillo@10 196 DEBUG(6) debugf("response failure:'%s' after_date = %d\n", psb->buffer, (int) after_data);
meillo@10 197 return FALSE;
meillo@10 198 }
meillo@0 199 }
meillo@0 200
meillo@10 201 static gboolean
meillo@10 202 check_init_response(smtp_base * psb)
meillo@0 203 {
meillo@10 204 if (check_response(psb, FALSE)) {
meillo@10 205 psb->use_esmtp = (strstr(psb->buffer, "ESMTP") != NULL);
meillo@0 206
meillo@10 207 DEBUG(4) debugf(psb->use_esmtp ? "uses esmtp\n" : "no esmtp\n");
meillo@0 208
meillo@10 209 return TRUE;
meillo@10 210 }
meillo@10 211 return FALSE;
meillo@0 212 }
meillo@0 213
meillo@10 214 static gchar*
meillo@10 215 get_response_arg(gchar * response)
meillo@0 216 {
meillo@10 217 gchar buf[SMTP_BUF_LEN];
meillo@10 218 gchar *p = response, *q = buf;
meillo@0 219
meillo@10 220 while (*p && (*p != '\n') && isspace(*p))
meillo@10 221 p++;
meillo@10 222 if (*p && (*p != '\n')) {
meillo@10 223 while (*p && (*p != '\n') && (*p != '\r') && (q < buf + SMTP_BUF_LEN - 1))
meillo@10 224 *(q++) = *(p++);
meillo@15 225 *q = '\0';
meillo@10 226 return g_strdup(buf);
meillo@10 227 }
meillo@10 228 return NULL;
meillo@0 229 }
meillo@0 230
meillo@10 231 static gboolean
meillo@10 232 check_helo_response(smtp_base * psb)
meillo@0 233 {
meillo@10 234 gchar *ptr = psb->buffer;
meillo@0 235
meillo@10 236 if (!check_response(psb, FALSE))
meillo@10 237 return FALSE;
meillo@0 238
meillo@10 239 while (*ptr) {
meillo@10 240 if (strncasecmp(&(ptr[4]), "SIZE", 4) == 0) {
meillo@10 241 gchar *arg;
meillo@10 242 psb->use_size = TRUE;
meillo@10 243 arg = get_response_arg(&(ptr[8]));
meillo@10 244 if (arg) {
meillo@10 245 psb->max_size = atoi(arg);
meillo@10 246 g_free(arg);
meillo@10 247 }
meillo@10 248 }
meillo@0 249
meillo@10 250 if (strncasecmp(&(ptr[4]), "PIPELINING", 10) == 0)
meillo@10 251 psb->use_pipelining = TRUE;
meillo@0 252
meillo@10 253 if (strncasecmp(&(ptr[4]), "AUTH", 4) == 0) {
meillo@10 254 if ((ptr[8] == ' ') || (ptr[8] == '=') || (ptr[8] == '\t')) { /* not sure about '\t' */
meillo@10 255 gchar *arg;
meillo@10 256 psb->use_auth = TRUE;
meillo@10 257 arg = get_response_arg(&(ptr[9])); /* after several years I finally learnt to count */
meillo@10 258 if (arg) {
meillo@10 259 psb->auth_names = g_strsplit(arg, " ", 0);
meillo@10 260 g_free(arg);
meillo@10 261
meillo@10 262 DEBUG(4) {
meillo@10 263 gint i = 0;
meillo@114 264 debugf("in check_helo_response()\n");
meillo@10 265 while (psb->auth_names[i]) {
meillo@114 266 debugf(" offered AUTH %s\n", psb->auth_names[i]);
meillo@10 267 i++;
meillo@10 268 }
meillo@10 269 }
meillo@10 270 }
meillo@10 271 }
meillo@10 272 }
meillo@10 273
meillo@10 274 while (*ptr != '\n')
meillo@10 275 ptr++;
meillo@10 276 ptr++;
meillo@0 277 }
meillo@0 278
meillo@10 279 DEBUG(4) {
meillo@114 280 debugf(" %s\n", psb->use_size ? "uses SIZE" : "no size");
meillo@114 281 debugf(" %s\n", psb->use_pipelining ? "uses PIPELINING" : "no pipelining");
meillo@114 282 debugf(" %s\n", psb->use_auth ? "uses AUTH" : "no auth");
meillo@10 283 }
meillo@0 284
meillo@10 285 return TRUE;
meillo@0 286 }
meillo@0 287
meillo@10 288 static gboolean
meillo@10 289 smtp_helo(smtp_base * psb, gchar * helo)
meillo@0 290 {
meillo@10 291 while (TRUE) {
meillo@10 292 if (psb->use_esmtp) {
meillo@10 293 fprintf(psb->out, "EHLO %s\r\n", helo);
meillo@10 294 fflush(psb->out);
meillo@0 295
meillo@10 296 DEBUG(4) debugf("EHLO %s\r\n", helo);
meillo@0 297
meillo@10 298 } else {
meillo@10 299 fprintf(psb->out, "HELO %s\r\n", helo);
meillo@10 300 fflush(psb->out);
meillo@0 301
meillo@10 302 DEBUG(4) debugf("HELO %s\r\n", helo);
meillo@0 303
meillo@10 304 }
meillo@0 305
meillo@10 306 if (!read_response(psb, SMTP_CMD_TIMEOUT))
meillo@10 307 return FALSE;
meillo@10 308
meillo@10 309 if (check_helo_response(psb))
meillo@10 310 return TRUE;
meillo@10 311 else {
meillo@10 312 if (psb->error == smtp_fail) {
meillo@10 313 if (psb->use_esmtp) {
meillo@10 314 /* our guess that server understands EHLO was wrong, try again with HELO */
meillo@10 315 psb->use_esmtp = FALSE;
meillo@10 316 } else {
meillo@10 317 /* what sort of server ist THAT ?! give up... */
meillo@10 318 return FALSE;
meillo@10 319 }
meillo@10 320 } else
meillo@10 321 return FALSE;
meillo@10 322 }
meillo@0 323 }
meillo@0 324 }
meillo@0 325
meillo@10 326 static void
meillo@10 327 smtp_cmd_mailfrom(smtp_base * psb, address * return_path, guint size)
meillo@0 328 {
meillo@10 329 if (psb->use_size) {
meillo@10 330 fprintf(psb->out, "MAIL FROM:%s SIZE=%d\r\n", addr_string(return_path), size);
meillo@10 331 fflush(psb->out);
meillo@0 332
meillo@10 333 DEBUG(4) debugf("MAIL FROM:%s SIZE=%d\r\n", addr_string(return_path), size);
meillo@0 334
meillo@10 335 } else {
meillo@10 336 fprintf(psb->out, "MAIL FROM:%s\r\n", addr_string(return_path));
meillo@10 337 fflush(psb->out);
meillo@0 338
meillo@10 339 DEBUG(4) debugf("MAIL FROM:%s\r\n", addr_string(return_path));
meillo@10 340 }
meillo@0 341 }
meillo@0 342
meillo@10 343 static void
meillo@10 344 smtp_cmd_rcptto(smtp_base * psb, address * rcpt)
meillo@0 345 {
meillo@10 346 fprintf(psb->out, "RCPT TO:%s\r\n", addr_string(rcpt));
meillo@10 347 fflush(psb->out);
meillo@10 348 DEBUG(4) debugf("RCPT TO:%s\n", addr_string(rcpt));
meillo@0 349 }
meillo@0 350
meillo@10 351 static void
meillo@10 352 send_data_line(smtp_base * psb, gchar * data)
meillo@0 353 {
meillo@10 354 /* According to RFC 821 each line should be terminated with CRLF.
meillo@10 355 Since a dot on a line itself marks the end of data, each line
meillo@10 356 beginning with a dot is prepended with another dot.
meillo@10 357 */
meillo@10 358 gchar *ptr;
meillo@15 359 gboolean new_line = TRUE; /* previous versions assumed that each item was exactly one line.
meillo@15 360 This is no longer the case */
meillo@0 361
meillo@10 362 ptr = data;
meillo@10 363 while (*ptr) {
meillo@10 364 int c = (int) (*ptr);
meillo@119 365 if (c == '.' && new_line) {
meillo@119 366 /* dot-stuffing */
meillo@119 367 putc('.', psb->out);
meillo@119 368 }
meillo@10 369 if (c == '\n') {
meillo@119 370 /* CRLF line terminators */
meillo@10 371 putc('\r', psb->out);
meillo@10 372 putc('\n', psb->out);
meillo@10 373 new_line = TRUE;
meillo@10 374 } else {
meillo@10 375 putc(c, psb->out);
meillo@10 376 new_line = FALSE;
meillo@10 377 }
meillo@10 378 ptr++;
meillo@10 379 }
meillo@0 380 }
meillo@0 381
meillo@10 382 static void
meillo@10 383 send_header(smtp_base * psb, GList * hdr_list)
meillo@0 384 {
meillo@10 385 GList *node;
meillo@10 386 gint num_hdrs = 0;
meillo@0 387
meillo@10 388 /* header */
meillo@10 389 if (hdr_list) {
meillo@10 390 foreach(hdr_list, node) {
meillo@10 391 if (node->data) {
meillo@10 392 header *hdr = (header *) (node->data);
meillo@10 393 if (hdr->header) {
meillo@10 394 send_data_line(psb, hdr->header);
meillo@10 395 num_hdrs++;
meillo@10 396 }
meillo@10 397 }
meillo@10 398 }
meillo@0 399 }
meillo@0 400
meillo@10 401 /* empty line separating headers from data: */
meillo@10 402 putc('\r', psb->out);
meillo@10 403 putc('\n', psb->out);
meillo@0 404
meillo@10 405 DEBUG(4) debugf("sent %d headers\n", num_hdrs);
meillo@0 406 }
meillo@0 407
meillo@10 408 static void
meillo@10 409 send_data(smtp_base * psb, message * msg)
meillo@0 410 {
meillo@10 411 GList *node;
meillo@10 412 gint num_lines = 0;
meillo@0 413
meillo@10 414 /* data */
meillo@10 415 if (msg->data_list) {
meillo@10 416 for (node = g_list_first(msg->data_list); node; node = g_list_next(node)) {
meillo@10 417 if (node->data) {
meillo@10 418 send_data_line(psb, node->data);
meillo@10 419 num_lines++;
meillo@10 420 }
meillo@10 421 }
meillo@10 422 }
meillo@0 423
meillo@10 424 DEBUG(4) debugf("sent %d lines of data\n", num_lines);
meillo@0 425
meillo@10 426 fprintf(psb->out, ".\r\n");
meillo@10 427 fflush(psb->out);
meillo@0 428 }
meillo@0 429
meillo@10 430 void
meillo@10 431 smtp_out_mark_rcpts(smtp_base * psb, GList * rcpt_list)
meillo@0 432 {
meillo@10 433 GList *rcpt_node;
meillo@10 434 for (rcpt_node = g_list_first(rcpt_list); rcpt_node; rcpt_node = g_list_next(rcpt_node)) {
meillo@10 435 address *rcpt = (address *) (rcpt_node->data);
meillo@0 436
meillo@10 437 addr_unmark_delivered(rcpt);
meillo@0 438
meillo@10 439 if ((psb->error == smtp_trylater) || (psb->error == smtp_timeout) || (psb->error == smtp_eof)) {
meillo@10 440 addr_mark_defered(rcpt);
meillo@10 441 } else {
meillo@10 442 addr_mark_failed(rcpt);
meillo@10 443 }
meillo@10 444 }
meillo@0 445 }
meillo@0 446
meillo@10 447 void
meillo@10 448 smtp_out_log_failure(smtp_base * psb, message * msg)
meillo@0 449 {
meillo@10 450 gchar *err_str;
meillo@0 451
meillo@10 452 if (psb->error == smtp_timeout)
meillo@10 453 err_str = g_strdup("connection timed out.");
meillo@10 454 else if (psb->error == smtp_eof)
meillo@10 455 err_str = g_strdup("connection terminated prematurely.");
meillo@10 456 else if (psb->error == smtp_syntax)
meillo@10 457 err_str = g_strdup_printf("got unexpected response: %s", psb->buffer);
meillo@10 458 else if (psb->error == smtp_cancel)
meillo@10 459 err_str = g_strdup("delivery was canceled.\n");
meillo@10 460 else
meillo@10 461 /* error message should still be in the buffer */
meillo@10 462 err_str = g_strdup_printf("failed: %s\n", psb->buffer);
meillo@0 463
meillo@10 464 if (msg == NULL)
meillo@10 465 logwrite(LOG_NOTICE, "host=%s %s\n", psb->remote_host, err_str);
meillo@10 466 else
meillo@10 467 logwrite(LOG_NOTICE, "%s == host=%s %s\n", msg->uid, psb->remote_host, err_str);
meillo@0 468
meillo@10 469 g_free(err_str);
meillo@0 470 }
meillo@0 471
meillo@10 472 smtp_base*
meillo@10 473 smtp_out_open(gchar * host, gint port, GList * resolve_list)
meillo@0 474 {
meillo@10 475 smtp_base *psb;
meillo@10 476 gint sock;
meillo@10 477 mxip_addr *addr;
meillo@0 478
meillo@10 479 DEBUG(5) debugf("smtp_out_open entered, host = %s\n", host);
meillo@0 480
meillo@10 481 if ((addr = connect_resolvelist(&sock, host, port, resolve_list))) {
meillo@10 482 /* create structure to hold status data: */
meillo@10 483 psb = create_smtpbase(sock);
meillo@10 484 psb->remote_host = addr->name;
meillo@0 485
meillo@10 486 DEBUG(5) {
meillo@10 487 struct sockaddr_in name;
meillo@10 488 int len = sizeof(struct sockaddr);
meillo@10 489 getsockname(sock, (struct sockaddr *) (&name), &len);
meillo@10 490 debugf("socket: name.sin_addr = %s\n", inet_ntoa(name.sin_addr));
meillo@10 491 }
meillo@10 492 return psb;
meillo@10 493 } else {
meillo@10 494 DEBUG(5) debugf("connect_resolvelist failed: %s %s\n", strerror(errno), hstrerror(h_errno));
meillo@10 495 }
meillo@0 496
meillo@10 497 return NULL;
meillo@0 498 }
meillo@0 499
meillo@10 500 smtp_base*
meillo@10 501 smtp_out_open_child(gchar * cmd)
meillo@0 502 {
meillo@10 503 smtp_base *psb;
meillo@10 504 gint sock;
meillo@0 505
meillo@10 506 DEBUG(5) debugf("smtp_out_open_child entered, cmd = %s\n", cmd);
meillo@0 507
meillo@10 508 sock = child(cmd);
meillo@0 509
meillo@10 510 if (sock > 0) {
meillo@10 511 psb = create_smtpbase(sock);
meillo@10 512 psb->remote_host = NULL;
meillo@0 513
meillo@10 514 return psb;
meillo@10 515 }
meillo@0 516
meillo@10 517 return NULL;
meillo@0 518 }
meillo@0 519
meillo@10 520 gboolean
meillo@10 521 smtp_out_rset(smtp_base * psb)
meillo@0 522 {
meillo@10 523 gboolean ok;
meillo@0 524
meillo@10 525 fprintf(psb->out, "RSET\r\n");
meillo@10 526 fflush(psb->out);
meillo@10 527 DEBUG(4) debugf("RSET\n");
meillo@0 528
meillo@10 529 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT)))
meillo@10 530 if (check_response(psb, FALSE))
meillo@10 531 return TRUE;
meillo@0 532
meillo@10 533 smtp_out_log_failure(psb, NULL);
meillo@10 534
meillo@10 535 return FALSE;
meillo@0 536 }
meillo@0 537
meillo@0 538 #ifdef ENABLE_AUTH
meillo@0 539
meillo@10 540 static gboolean
meillo@10 541 smtp_out_auth_cram_md5(smtp_base * psb)
meillo@0 542 {
meillo@10 543 gboolean ok = FALSE;
meillo@0 544
meillo@10 545 fprintf(psb->out, "AUTH CRAM-MD5\r\n");
meillo@10 546 fflush(psb->out);
meillo@10 547 DEBUG(4) debugf("AUTH CRAM-MD5\n");
meillo@10 548 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT))) {
meillo@10 549 if ((ok = check_response(psb, TRUE))) {
meillo@10 550 gchar *chall64 = get_response_arg(&(psb->buffer[4]));
meillo@10 551 gint chall_size;
meillo@10 552 gchar *chall = base64_decode(chall64, &chall_size);
meillo@10 553 guchar digest[16], *reply64, *reply;
meillo@10 554 gchar digest_string[33];
meillo@10 555 gint i;
meillo@0 556 #ifdef USE_LIB_CRYPTO
meillo@10 557 unsigned int digest_len;
meillo@0 558 #endif
meillo@10 559
meillo@114 560 DEBUG(5) debugf("smtp_out_auth_cram_md5():\n");
meillo@114 561 DEBUG(5) debugf(" encoded challenge = %s\n", chall64);
meillo@114 562 DEBUG(5) debugf(" decoded challenge = %s, size = %d\n", chall, chall_size);
meillo@114 563 DEBUG(5) debugf(" secret = %s\n", psb->auth_secret);
meillo@10 564
meillo@0 565 #ifdef USE_LIB_CRYPTO
meillo@10 566 HMAC(EVP_md5(), psb->auth_secret, strlen(psb->auth_secret), chall, chall_size, digest, &digest_len);
meillo@0 567 #else
meillo@10 568 hmac_md5(chall, chall_size, psb->auth_secret, strlen(psb->auth_secret), digest);
meillo@0 569 #endif
meillo@10 570
meillo@10 571 for (i = 0; i < 16; i++)
meillo@10 572 sprintf(&(digest_string[i + i]), "%02x", (unsigned int) (digest[i]));
meillo@15 573 digest_string[32] = '\0';
meillo@10 574
meillo@114 575 DEBUG(5) debugf(" digest = %s\n", digest_string);
meillo@10 576
meillo@10 577 reply = g_strdup_printf("%s %s", psb->auth_login, digest_string);
meillo@114 578 DEBUG(5) debugf(" unencoded reply = %s\n", reply);
meillo@10 579
meillo@10 580 reply64 = base64_encode(reply, strlen(reply));
meillo@114 581 DEBUG(5) debugf(" encoded reply = %s\n", reply64);
meillo@10 582
meillo@10 583 fprintf(psb->out, "%s\r\n", reply64);
meillo@10 584 fflush(psb->out);
meillo@114 585 DEBUG(4) debugf(" reply64 = %s\n", reply64);
meillo@10 586
meillo@10 587 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT)))
meillo@10 588 ok = check_response(psb, FALSE);
meillo@10 589
meillo@10 590 g_free(reply64);
meillo@10 591 g_free(reply);
meillo@10 592 g_free(chall);
meillo@10 593 g_free(chall64);
meillo@10 594 }
meillo@10 595 }
meillo@10 596 return ok;
meillo@0 597 }
meillo@0 598
meillo@10 599 static gboolean
meillo@10 600 smtp_out_auth_login(smtp_base * psb)
meillo@0 601 {
meillo@10 602 gboolean ok = FALSE;
meillo@10 603 fprintf(psb->out, "AUTH LOGIN\r\n");
meillo@10 604 fflush(psb->out);
meillo@10 605 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT))) {
meillo@10 606 if ((ok = check_response(psb, TRUE))) {
meillo@10 607 gchar *resp64;
meillo@10 608 guchar *resp;
meillo@10 609 gint resp_size;
meillo@10 610 gchar *reply64;
meillo@10 611
meillo@114 612 DEBUG(5) debugf("smtp_out_auth_login():\n");
meillo@10 613 resp64 = get_response_arg(&(psb->buffer[4]));
meillo@114 614 DEBUG(5) debugf(" encoded response = %s\n", resp64);
meillo@10 615 resp = base64_decode(resp64, &resp_size);
meillo@10 616 g_free(resp64);
meillo@114 617 DEBUG(5) debugf(" decoded response = %s, size = %d\n", resp, resp_size);
meillo@10 618 g_free(resp);
meillo@10 619 reply64 = base64_encode(psb->auth_login, strlen(psb->auth_login));
meillo@10 620 fprintf(psb->out, "%s\r\n", reply64);
meillo@10 621 fflush(psb->out);
meillo@10 622 g_free(reply64);
meillo@10 623 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT))) {
meillo@10 624 if ((ok = check_response(psb, TRUE))) {
meillo@10 625 resp64 = get_response_arg(&(psb->buffer[4]));
meillo@114 626 DEBUG(5) debugf(" encoded response = %s\n", resp64);
meillo@10 627 resp = base64_decode(resp64, &resp_size);
meillo@10 628 g_free(resp64);
meillo@114 629 DEBUG(5) debugf(" decoded response = %s, size = %d\n", resp, resp_size);
meillo@10 630 g_free(resp);
meillo@10 631 reply64 = base64_encode(psb->auth_secret, strlen(psb->auth_secret));
meillo@10 632 fprintf(psb->out, "%s\r\n", reply64);
meillo@10 633 fflush(psb->out);
meillo@10 634 g_free(reply64);
meillo@10 635 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT)))
meillo@10 636 ok = check_response(psb, FALSE);
meillo@10 637 }
meillo@10 638 }
meillo@10 639 }
meillo@0 640 }
meillo@10 641 return ok;
meillo@0 642 }
meillo@0 643
meillo@10 644 gboolean
meillo@10 645 smtp_out_auth(smtp_base * psb)
meillo@0 646 {
meillo@10 647 gboolean ok = FALSE;
meillo@10 648 gint i = 0;
meillo@10 649 while (psb->auth_names[i]) {
meillo@10 650 if (strcasecmp(psb->auth_names[i], psb->auth_name) == 0)
meillo@10 651 break;
meillo@10 652 i++;
meillo@10 653 }
meillo@10 654 if (psb->auth_names[i]) {
meillo@10 655 if (strcasecmp(psb->auth_name, "cram-md5") == 0) {
meillo@10 656 smtp_out_auth_cram_md5(psb);
meillo@10 657 } else if (strcasecmp(psb->auth_name, "login") == 0) {
meillo@10 658 smtp_out_auth_login(psb);
meillo@10 659 } else {
meillo@10 660 logwrite(LOG_ERR, "auth method %s not supported\n", psb->auth_name);
meillo@10 661 }
meillo@10 662 } else {
meillo@10 663 logwrite(LOG_ERR, "no auth method %s found.\n", psb->auth_name);
meillo@10 664 }
meillo@10 665 return ok;
meillo@0 666 }
meillo@0 667
meillo@0 668 #endif
meillo@0 669
meillo@10 670 gboolean
meillo@10 671 smtp_out_init(smtp_base * psb)
meillo@0 672 {
meillo@10 673 gboolean ok;
meillo@0 674
meillo@10 675 if ((ok = read_response(psb, SMTP_INITIAL_TIMEOUT))) {
meillo@10 676 if ((ok = check_init_response(psb))) {
meillo@10 677
meillo@10 678 if ((ok = smtp_helo(psb, psb->helo_name))) {
meillo@0 679 #ifdef ENABLE_AUTH
meillo@10 680 if (psb->auth_name && psb->use_auth) {
meillo@10 681 /* we completely disregard the response of server here. If
meillo@10 682 authentication fails, the server will complain later
meillo@10 683 anyway. I know, this is not polite... */
meillo@10 684 smtp_out_auth(psb);
meillo@10 685 }
meillo@10 686 #endif
meillo@10 687 }
meillo@10 688 }
meillo@0 689 }
meillo@10 690 if (!ok)
meillo@10 691 smtp_out_log_failure(psb, NULL);
meillo@10 692 return ok;
meillo@0 693 }
meillo@0 694
meillo@10 695 gint
meillo@10 696 smtp_out_msg(smtp_base * psb, message * msg, address * return_path, GList * rcpt_list, GList * hdr_list)
meillo@0 697 {
meillo@10 698 gint i, size;
meillo@10 699 gboolean ok = TRUE;
meillo@10 700 int rcpt_cnt;
meillo@10 701 int rcpt_accept = 0;
meillo@0 702
meillo@10 703 DEBUG(5) debugf("smtp_out_msg entered\n");
meillo@0 704
meillo@10 705 /* defaults: */
meillo@10 706 if (return_path == NULL)
meillo@10 707 return_path = msg->return_path;
meillo@10 708 if (hdr_list == NULL)
meillo@10 709 hdr_list = msg->hdr_list;
meillo@10 710 if (rcpt_list == NULL)
meillo@10 711 rcpt_list = msg->rcpt_list;
meillo@10 712 rcpt_cnt = g_list_length(rcpt_list);
meillo@0 713
meillo@10 714 size = msg_calc_size(msg, TRUE);
meillo@0 715
meillo@10 716 /* respect maximum size given by server: */
meillo@10 717 if ((psb->max_size > 0) && (size > psb->max_size)) {
meillo@114 718 logwrite(LOG_WARNING, "%s == host=%s message size (%d) > "
meillo@114 719 "fixed maximum message size of server (%d)",
meillo@10 720 msg->uid, psb->remote_host, size, psb->max_size);
meillo@10 721 psb->error = smtp_cancel;
meillo@10 722 ok = FALSE;
meillo@10 723 }
meillo@0 724
meillo@10 725 if (ok) {
meillo@119 726 /* pretend the message is a bit larger,
meillo@119 727 just in case the size calculation is buggy */
meillo@119 728 smtp_cmd_mailfrom(psb, return_path, psb->use_size ? size+SMTP_SIZE_ADD : 0);
meillo@0 729
meillo@10 730 if (!psb->use_pipelining) {
meillo@10 731 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT)))
meillo@10 732 ok = check_response(psb, FALSE);
meillo@10 733 }
meillo@10 734 }
meillo@10 735 if (ok) {
meillo@10 736 GList *rcpt_node;
meillo@10 737 rcpt_accept = 0;
meillo@0 738
meillo@10 739 for (rcpt_node = g_list_first(rcpt_list); rcpt_node != NULL; rcpt_node = g_list_next(rcpt_node)) {
meillo@10 740 address *rcpt = (address *) (rcpt_node->data);
meillo@10 741 smtp_cmd_rcptto(psb, rcpt);
meillo@10 742 if (!psb->use_pipelining) {
meillo@10 743 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT)))
meillo@10 744 if (check_response(psb, FALSE)) {
meillo@10 745 rcpt_accept++;
meillo@10 746 addr_mark_delivered(rcpt);
meillo@10 747 } else {
meillo@10 748 /* if server returned an error for one recp. we
meillo@10 749 may still try the others. But if it is a timeout, eof
meillo@10 750 or unexpected response, it is more serious and we should
meillo@10 751 give up. */
meillo@10 752 if ((psb->error != smtp_trylater) && (psb->error != smtp_fail)) {
meillo@10 753 ok = FALSE;
meillo@10 754 break;
meillo@10 755 } else {
meillo@114 756 logwrite(LOG_NOTICE, "%s == %s host=%s failed: %s\n",
meillo@15 757 msg->uid, addr_string(rcpt), psb->remote_host, psb->buffer);
meillo@10 758 if (psb->error == smtp_trylater) {
meillo@10 759 addr_mark_defered(rcpt);
meillo@10 760 } else {
meillo@10 761 addr_mark_failed(rcpt);
meillo@10 762 }
meillo@10 763 }
meillo@10 764 } else
meillo@10 765 break;
meillo@10 766 }
meillo@10 767 }
meillo@0 768
meillo@10 769 /* There is no point in going on if no recp.s were accpted.
meillo@10 770 But we can check that at this point only if not pipelining: */
meillo@10 771 ok = (ok && (psb->use_pipelining || (rcpt_accept > 0)));
meillo@10 772 if (ok) {
meillo@0 773
meillo@10 774 fprintf(psb->out, "DATA\r\n");
meillo@10 775 fflush(psb->out);
meillo@0 776
meillo@10 777 DEBUG(4) debugf("DATA\r\n");
meillo@10 778
meillo@10 779 if (psb->use_pipelining) {
meillo@10 780 /* the first pl'ed command was MAIL FROM
meillo@10 781 the last was DATA, whose response can be handled by the 'normal' code
meillo@10 782 all in between were RCPT TO:
meillo@10 783 */
meillo@10 784 /* response to MAIL FROM: */
meillo@10 785 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT))) {
meillo@10 786 if ((ok = check_response(psb, FALSE))) {
meillo@10 787
meillo@10 788 /* response(s) to RCPT TO:
meillo@10 789 this is very similar to the sequence above for no pipeline
meillo@10 790 */
meillo@10 791 for (i = 0; i < rcpt_cnt; i++) {
meillo@10 792 if ((ok = read_response(psb, SMTP_CMD_TIMEOUT))) {
meillo@10 793 address *rcpt = g_list_nth_data(rcpt_list, i);
meillo@10 794 if (check_response(psb, FALSE)) {
meillo@10 795 rcpt_accept++;
meillo@10 796 addr_mark_delivered(rcpt);
meillo@10 797 } else {
meillo@10 798 /* if server returned an error 4xx or 5xx for one recp. we
meillo@10 799 may still try the others. But if it is a timeout, eof
meillo@10 800 or unexpected response, it is more serious and we
meillo@10 801 should give up. */
meillo@10 802 if ((psb->error != smtp_trylater) &&
meillo@10 803 (psb->error != smtp_fail)) {
meillo@10 804 ok = FALSE;
meillo@10 805 break;
meillo@10 806 } else {
meillo@114 807 logwrite(LOG_NOTICE, "%s == %s host=%s failed: %s\n", msg->uid,
meillo@10 808 addr_string(rcpt), psb->remote_host, psb->buffer);
meillo@10 809 if (psb->error == smtp_trylater) {
meillo@10 810 addr_mark_defered(rcpt);
meillo@10 811 } else {
meillo@10 812 addr_mark_failed(rcpt);
meillo@10 813 }
meillo@10 814 }
meillo@10 815 }
meillo@10 816 } else {
meillo@10 817 DEBUG(5) debugf("check_response failed after RCPT TO\n");
meillo@10 818 break;
meillo@10 819 }
meillo@10 820 }
meillo@10 821 if (rcpt_accept == 0)
meillo@10 822 ok = FALSE;
meillo@10 823 } else {
meillo@10 824 DEBUG(5) debugf("check_response failed after MAIL FROM\n");
meillo@10 825 }
meillo@10 826 } else {
meillo@10 827 DEBUG(5)
meillo@10 828 debugf("read_response failed after MAIL FROM\n");
meillo@10 829 }
meillo@10 830 }
meillo@10 831
meillo@10 832 /* if(psb->use_pipelining) */
meillo@10 833 /* response to the DATA cmd */
meillo@10 834 if (ok) {
meillo@10 835 if (read_response(psb, SMTP_DATA_TIMEOUT)) {
meillo@10 836 if (check_response(psb, TRUE)) {
meillo@10 837 send_header(psb, hdr_list);
meillo@10 838 send_data(psb, msg);
meillo@10 839
meillo@10 840 if (read_response(psb, SMTP_FINAL_TIMEOUT))
meillo@10 841 ok = check_response(psb, FALSE);
meillo@10 842 }
meillo@10 843 }
meillo@10 844 }
meillo@0 845 }
meillo@10 846 }
meillo@10 847
meillo@10 848 DEBUG(5) {
meillo@114 849 debugf("smtp_out_msg():\n");
meillo@114 850 debugf(" psb->error = %d\n", psb->error);
meillo@114 851 debugf(" ok = %d\n", ok);
meillo@114 852 debugf(" rcpt_accept = %d\n", rcpt_accept);
meillo@10 853 }
meillo@10 854
meillo@10 855 if (psb->error == smtp_ok) {
meillo@10 856 GList *rcpt_node;
meillo@10 857 for (rcpt_node = g_list_first(rcpt_list); rcpt_node; rcpt_node = g_list_next(rcpt_node)) {
meillo@10 858 address *rcpt = (address *) (rcpt_node->data);
meillo@10 859 if (addr_is_delivered(rcpt))
meillo@10 860 logwrite(LOG_NOTICE, "%s => %s host=%s with %s\n", msg->uid, addr_string(rcpt),
meillo@10 861 psb->remote_host, psb->use_esmtp ? "esmtp" : "smtp");
meillo@0 862 }
meillo@10 863 } else {
meillo@10 864 /* if something went wrong,
meillo@10 865 we have to unmark the rcpts prematurely marked as delivered
meillo@10 866 and mark the status */
meillo@10 867 smtp_out_mark_rcpts(psb, rcpt_list);
meillo@10 868
meillo@10 869 /* log the failure: */
meillo@10 870 smtp_out_log_failure(psb, msg);
meillo@0 871 }
meillo@10 872 return rcpt_accept;
meillo@0 873 }
meillo@0 874
meillo@10 875 gboolean
meillo@10 876 smtp_out_quit(smtp_base * psb)
meillo@0 877 {
meillo@10 878 fprintf(psb->out, "QUIT\r\n");
meillo@10 879 fflush(psb->out);
meillo@0 880
meillo@10 881 DEBUG(4) debugf("QUIT\n");
meillo@0 882
meillo@10 883 signal(SIGALRM, SIG_DFL);
meillo@10 884
meillo@10 885 return TRUE;
meillo@0 886 }
meillo@10 887
meillo@10 888 gint
meillo@10 889 smtp_deliver(gchar * host, gint port, GList * resolve_list, message * msg, address * return_path, GList * rcpt_list)
meillo@0 890 {
meillo@10 891 smtp_base *psb;
meillo@10 892 smtp_error err;
meillo@0 893
meillo@10 894 DEBUG(5) debugf("smtp_deliver entered\n");
meillo@0 895
meillo@10 896 if (return_path == NULL)
meillo@10 897 return_path = msg->return_path;
meillo@0 898
meillo@10 899 if ((psb = smtp_out_open(host, port, resolve_list))) {
meillo@10 900 set_heloname(psb, return_path->domain, TRUE);
meillo@10 901 /* initiate connection, send message and quit: */
meillo@10 902 if (smtp_out_init(psb)) {
meillo@10 903 smtp_out_msg(psb, msg, return_path, rcpt_list, NULL);
meillo@10 904 if (psb->error == smtp_ok || (psb->error == smtp_fail) || (psb->error == smtp_trylater)
meillo@10 905 || (psb->error == smtp_syntax) || (psb->error == smtp_cancel))
meillo@10 906 smtp_out_quit(psb);
meillo@10 907 }
meillo@10 908
meillo@10 909 err = psb->error;
meillo@10 910 destroy_smtpbase(psb);
meillo@10 911
meillo@10 912 return err;
meillo@10 913 }
meillo@10 914 return -1;
meillo@0 915 }