masqmail
view src/accept.c @ 208:3708b655a371
added newlines to the end of log and debug messages where missing
| author | meillo@marmaro.de |
|---|---|
| date | Sun, 18 Jul 2010 21:49:15 +0200 |
| parents | cd59a5b4d3dd |
| children | 996b53a50f55 |
line source
1 /* MasqMail
2 Copyright (C) 1999-2001 Oliver Kurth
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
19 #include "masqmail.h"
20 #include "readsock.h"
22 gchar *prot_names[] = {
23 "local",
24 "bsmtp",
25 "smtp",
26 "esmtp",
27 "(unknown)" /* should not happen, but better than crashing. */
28 };
30 static gchar*
31 string_base62(gchar * res, guint value, gchar len)
32 {
33 static gchar base62_chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
34 gchar *p = res + len;
35 *p = '\0';
36 while (p > res) {
37 *(--p) = base62_chars[value % 62];
38 value /= 62;
39 }
40 return res;
41 }
43 static gint
44 _g_list_addr_isequal(gconstpointer a, gconstpointer b)
45 {
46 address *addr1 = (address *) a;
47 address *addr2 = (address *) b;
48 int ret;
50 if ((ret = strcasecmp(addr1->domain, addr2->domain)) == 0)
51 return strcmp(addr1->local_part, addr2->local_part);
52 else
53 return ret;
54 }
56 /* accept message from anywhere.
57 A locally originating message is indicated by msg->recieved_host == NULL
59 The -t option:
60 The ACC_RCPT_FROM_HEAD flag adds the recipients found in To/Cc/Bcc
61 headers to the recipients list.
62 The ACC_DEL_RCPTS flag makes only sense if the ACC_RCPT_FROM_HEAD
63 flag is given too. With ACC_DEL_RCPTS the recipients given on the
64 command line are removed from the ones given in headers.
65 */
67 accept_error
68 accept_message_stream(FILE * in, message * msg, guint flags)
69 {
70 gchar *line, *line1;
71 int line_size = MAX_DATALINE;
72 gboolean in_headers = TRUE;
73 header *hdr = NULL;
74 gint line_cnt = 0, data_size = 0;
76 line = g_malloc(line_size);
77 line[0] = '\0';
79 while (TRUE) {
80 int len = read_sockline1(in, &line, &line_size, 5 * 60, READSOCKL_CVT_CRLF);
82 line1 = line;
84 if ((line[0] == '.') && (!(flags & ACC_DOT_IGNORE))) {
85 if (line[1] == '\n') {
86 g_free(line);
87 break;
88 }
89 line1++;
90 }
92 if (len <= 0) {
93 if ((len == -1) && (flags & (ACC_DOT_IGNORE | ACC_NODOT_RELAX))) {
94 /* we got an EOF, and the last line was not terminated by a CR */
95 gint len1 = strlen(line1);
96 if (len1 > 0) { /* == 0 is 'normal' (EOF after a CR) */
97 if (line1[len1 - 1] != '\n') { /* some mail clients allow unterminated lines */
98 line1[len1] = '\n';
99 line1[len1 + 1] = '\0';
100 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1));
101 data_size += strlen(line1);
102 line_cnt++;
103 }
104 }
105 break;
106 } else {
107 g_free(line);
108 if (len == -1) {
109 return AERR_EOF;
110 } else if (len == -2) {
111 /* should not happen any more */
112 return AERR_OVERFLOW;
113 } else if (len == -3) {
114 return AERR_TIMEOUT;
115 } else {
116 /* does not happen */
117 DEBUG(5) debugf("read_sockline returned %d\n", len);
118 return AERR_UNKNOWN;
119 }
120 }
121 } else {
122 if (in_headers) {
124 /* some pop servers send the 'From ' line, skip it: */
125 if (msg->hdr_list == NULL)
126 if (strncmp(line1, "From ", 5) == 0)
127 continue;
129 if (line1[0] == ' ' || line1[0] == '\t') {
130 /* continuation of 'folded' header: */
131 if (hdr) {
132 hdr->header = g_strconcat(hdr->header, line1, NULL);
133 }
135 } else if (line1[0] == '\n') {
136 /* an empty line marks end of headers */
137 in_headers = FALSE;
138 } else {
139 /* in all other cases we expect another header */
140 if ((hdr = get_header(line1)))
141 msg->hdr_list = g_list_append(msg->hdr_list, hdr);
142 else {
143 /* if get_header() returns NULL, no header was recognized,
144 so this seems to be the first data line of a broken mailer
145 which does not send an empty line after the headers */
146 in_headers = FALSE;
147 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1));
148 }
149 }
150 } else {
151 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1));
152 data_size += strlen(line1);
153 line_cnt++;
154 }
155 }
156 if (conf.max_msg_size && (data_size > conf.max_msg_size)) {
157 DEBUG(4) debugf("accept_message_stream(): "
158 "received %d bytes (conf.max_msg_size=%d)\n",
159 data_size, conf.max_msg_size);
160 return AERR_SIZE;
161 }
163 }
165 if (msg->data_list != NULL)
166 msg->data_list = g_list_reverse(msg->data_list);
167 else
168 /* make sure data list is not NULL: */
169 msg->data_list = g_list_append(NULL, g_strdup(""));
171 DEBUG(4) debugf("received %d lines of data (%d bytes)\n", line_cnt, data_size);
172 /* we get here after we succesfully received the mail data */
174 msg->data_size = data_size;
175 msg->received_time = time(NULL);
177 return AERR_OK;
178 }
180 accept_error
181 accept_message_prepare(message * msg, guint flags)
182 {
183 struct passwd *passwd = NULL;
184 GList *non_rcpt_list = NULL;
185 time_t rec_time = time(NULL);
187 DEBUG(5) debugf("accept_message_prepare()\n");
189 /* create unique message id */
190 msg->uid = g_malloc(14);
192 string_base62(msg->uid, rec_time, 6);
193 msg->uid[6] = '-';
194 string_base62(&(msg->uid[7]), getpid(), 3);
195 msg->uid[10] = '-';
196 string_base62(&(msg->uid[11]), msg->transfer_id, 2);
197 msg->uid[13] = 0;
199 /* if local, get password entry */
200 if (msg->received_host == NULL) {
201 passwd = g_memdup(getpwuid(geteuid()), sizeof(struct passwd));
202 msg->ident = g_strdup(passwd->pw_name);
203 }
205 /* set return path if local */
206 if (msg->return_path == NULL && msg->received_host == NULL) {
207 gchar *path = g_strdup_printf("<%s@%s>", passwd->pw_name, conf.host_name);
208 DEBUG(3) debugf("setting return_path for local accept: %s\n", path);
209 msg->return_path = create_address(path, TRUE);
210 g_free(path);
211 }
213 /* -t option (see comment above) */
214 if (flags & ACC_DEL_RCPTS) {
215 non_rcpt_list = msg->rcpt_list;
216 msg->rcpt_list = NULL;
217 }
219 /* scan headers */
220 {
221 gboolean has_id = FALSE;
222 gboolean has_date = FALSE;
223 gboolean has_sender = FALSE;
224 gboolean has_from = FALSE;
225 gboolean has_to_or_cc = FALSE;
226 GList *hdr_node, *hdr_node_next;
227 header *hdr;
229 for (hdr_node = g_list_first(msg->hdr_list);
230 hdr_node != NULL; hdr_node = hdr_node_next) {
231 hdr_node_next = g_list_next(hdr_node);
232 hdr = ((header *) (hdr_node->data));
233 DEBUG(5) debugf("scanning headers: %s", hdr->header);
234 switch (hdr->id) {
235 case HEAD_MESSAGE_ID:
236 has_id = TRUE;
237 break;
238 case HEAD_DATE:
239 has_date = TRUE;
240 break;
241 case HEAD_FROM:
242 has_from = TRUE;
243 break;
244 case HEAD_SENDER:
245 has_sender = TRUE;
246 break;
247 case HEAD_TO:
248 case HEAD_CC:
249 has_to_or_cc = TRUE;
250 /* fall through */
251 case HEAD_BCC:
252 if (flags & ACC_RCPT_FROM_HEAD) {
253 /* -t option (see comment above) */
254 DEBUG(5) debugf("hdr->value = %s\n", hdr->value);
255 if (hdr->value) {
256 msg->rcpt_list = addr_list_append_rfc822(msg->rcpt_list, hdr->value, conf.host_name);
257 }
258 }
259 if (hdr->id == HEAD_BCC) {
260 DEBUG(3) debugf("removing 'Bcc' header\n");
261 msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node);
262 g_list_free_1(hdr_node);
263 destroy_header(hdr);
264 }
265 break;
266 case HEAD_ENVELOPE_TO:
267 if (flags & ACC_SAVE_ENVELOPE_TO) {
268 DEBUG(3) debugf("creating 'X-Orig-Envelope-To' header\n");
269 msg->hdr_list = g_list_prepend(msg->hdr_list, create_header(HEAD_UNKNOWN,
270 "X-Orig-Envelope-to: %s", hdr->value));
271 }
272 DEBUG(3) debugf("removing 'Envelope-To' header\n");
273 msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node);
274 g_list_free_1(hdr_node);
275 destroy_header(hdr);
276 break;
277 case HEAD_RETURN_PATH:
278 if (flags & ACC_MAIL_FROM_HEAD) {
279 /* usually POP3 accept */
280 msg->return_path = create_address_qualified(hdr->value, TRUE, msg->received_host);
281 DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path));
282 }
283 DEBUG(3) debugf("removing 'Return-Path' header\n");
284 msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node);
285 g_list_free_1(hdr_node);
286 destroy_header(hdr);
287 break;
288 default:
289 break; /* make compiler happy */
290 }
291 }
293 if (msg->return_path == NULL) {
294 /* this can happen for pop3 accept only and if no Return-path: header was given */
295 GList *hdr_list;
296 header *hdr;
298 DEBUG(3) debugf("return_path == NULL\n");
300 hdr_list = find_header(msg->hdr_list, HEAD_SENDER, NULL);
301 if (!hdr_list)
302 hdr_list = find_header(msg->hdr_list, HEAD_FROM, NULL);
303 if (hdr_list) {
304 gchar *addr;
305 hdr = (header *) (g_list_first(hdr_list)->data);
307 DEBUG(5) debugf("hdr->value = '%s'\n", hdr->value);
309 addr = g_strdup(hdr->value);
310 g_strchomp(addr);
312 if ((msg->return_path = create_address_qualified(addr, FALSE, msg->received_host)) != NULL) {
313 DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path));
314 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_UNKNOWN,
315 "X-Warning: return path set from %s address\n",
316 hdr->id == HEAD_SENDER ? "Sender:" : "From:"));
317 }
318 g_free(addr);
319 }
320 if (msg->return_path == NULL) { /* no Sender: or From: or create_address_qualified failed */
321 msg->return_path = create_address_qualified("postmaster", TRUE, conf.host_name);
322 DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path));
323 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_UNKNOWN,
324 "X-Warning: real return path is unknown\n"));
325 }
326 }
328 if (flags & ACC_DEL_RCPTS) {
329 /* remove the recipients given on the command line from the ones given in headers
330 -t option (see comment above) */
331 GList *rcpt_node;
332 foreach(non_rcpt_list, rcpt_node) {
333 address *rcpt = (address *) (rcpt_node->data);
334 GList *node;
335 if ((node = g_list_find_custom(msg->rcpt_list, rcpt, _g_list_addr_isequal))) {
336 DEBUG(3) debugf("removing rcpt address %s\n", addr_string(node->data));
337 msg->rcpt_list = g_list_remove_link(msg->rcpt_list, node);
338 destroy_address((address *) (node->data));
339 g_list_free_1(node);
340 }
341 }
342 }
344 /* here we should have our recipients, fail if not: */
345 if (msg->rcpt_list == NULL) {
346 logwrite(LOG_WARNING, "no recipients found in message\n");
347 return AERR_NORCPT;
348 }
350 if (!(has_sender || has_from)) {
351 DEBUG(3) debugf("adding 'From' header\n");
352 msg->hdr_list = g_list_append(msg->hdr_list,
353 msg->full_sender_name
354 ?
355 create_header(HEAD_FROM, "From: \"%s\" <%s@%s>\n", msg->full_sender_name,
356 msg->return_path->local_part, msg->return_path->domain)
357 :
358 create_header(HEAD_FROM, "From: <%s@%s>\n",
359 msg->return_path->local_part, msg->return_path->domain)
360 );
361 }
362 if (!has_to_or_cc) {
363 DEBUG(3) debugf("no To: or Cc: header, hence adding `To: undisclosed recipients:;'\n");
364 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_TO, "To: undisclosed-recipients:;\n"));
365 }
366 if (!has_date) {
367 DEBUG(3) debugf("adding 'Date:' header\n");
368 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_DATE, "Date: %s\n", rec_timestamp()));
369 }
370 if (!has_id) {
371 DEBUG(3) debugf("adding 'Message-ID:' header\n");
372 msg->hdr_list = g_list_append(msg->hdr_list,
373 create_header(HEAD_MESSAGE_ID, "Message-ID: <%s@%s>\n", msg->uid, conf.host_name));
374 }
375 }
377 /* Received header: */
378 /* At this point because we have to know the rcpts for the 'for' part */
379 gchar *for_string = NULL;
380 header *hdr = NULL;
382 DEBUG(3) debugf("adding 'Received:' header\n");
384 if (g_list_length(msg->rcpt_list) == 1) {
385 address *addr = (address *) (g_list_first(msg->rcpt_list)->data);
386 for_string = g_strdup_printf(" for %s", addr_string(addr));
387 }
389 if (msg->received_host == NULL) {
390 /* received locally */
391 hdr = create_header(HEAD_RECEIVED, "Received: from %s by %s with %s (%s %s) id %s%s; %s\n",
392 passwd->pw_name, conf.host_name, prot_names[msg->received_prot],
393 PACKAGE, VERSION, msg->uid, for_string ? for_string : "", rec_timestamp());
394 } else {
395 /* received from remote */
396 #ifdef ENABLE_IDENT
397 DEBUG(5) debugf("adding 'Received:' header (5)\n");
398 hdr = create_header(HEAD_RECEIVED, "Received: from %s (ident=%s) by %s with %s (%s %s) id %s%s; %s\n",
399 msg->received_host, msg->ident ? msg->ident : "unknown", conf.host_name,
400 prot_names[msg->received_prot], PACKAGE, VERSION, msg->uid, for_string ? for_string : "",
401 rec_timestamp());
402 #else
403 hdr = create_header(HEAD_RECEIVED, "Received: from %s by %s with %s (%s %s) id %s%s; %s\n",
404 msg->received_host, conf.host_name, prot_names[msg->received_prot],
405 PACKAGE, VERSION, msg->uid, for_string ? for_string : "", rec_timestamp());
406 #endif
407 }
408 header_fold(hdr);
409 msg->hdr_list = g_list_prepend(msg->hdr_list, hdr);
411 if (for_string)
412 g_free(for_string);
414 /* write message to spool: */
415 /* accept is no longer responsible for this
416 if (!spool_write(msg, TRUE))
417 return AERR_NOSPOOL;
418 */
419 return AERR_OK;
420 }
422 accept_error
423 accept_message(FILE * in, message * msg, guint flags)
424 {
425 accept_error err;
427 err = accept_message_stream(in, msg, flags);
428 if (err == AERR_OK)
429 err = accept_message_prepare(msg, flags);
431 return err;
432 }