masqmail
view src/masqmail.h @ 347:53cf6be5843a
Minor refactoring
| author | markus schnalke <meillo@marmaro.de> |
|---|---|
| date | Thu, 14 Jul 2011 11:15:27 +0200 |
| parents | 9149d893eb52 |
| children | a7a387253b2f |
line source
1 /* MasqMail
2 Copyright (C) 1999-2001 Oliver Kurth
3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
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.
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.
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 #include <config.h>
21 #include <stdio.h>
22 #include <stdarg.h>
23 #include <errno.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <ctype.h>
27 #include <unistd.h>
28 #include <pwd.h>
29 #include <sys/types.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <time.h>
33 #include <sys/time.h>
34 #include <netinet/in.h>
35 #include <arpa/inet.h>
36 #include <netdb.h>
37 #include <syslog.h>
38 #include <signal.h>
39 #include <fcntl.h>
41 #include <glib.h>
43 #ifdef ENABLE_IDENT
44 #include "libident/ident.h"
45 #endif
47 #include "lookup.h"
49 typedef struct _interface {
50 gchar *address;
51 gint port;
52 } interface;
54 #define ADDR_FLAG_DELIVERED 0x01
55 #define ADDR_FLAG_DEFERED 0x02
56 #define ADDR_FLAG_FAILED 0x04
57 #define ADDR_FLAG_LAST_ROUTE 0x40
59 typedef struct _address {
60 gchar *address;
61 gchar *local_part;
62 gchar *domain;
63 gint flags;
64 GList *children;
65 struct _address *parent;
66 } address;
68 #define addr_mark_delivered(addr) { addr->flags |= ADDR_FLAG_DELIVERED; }
69 #define addr_unmark_delivered(addr) { addr->flags &= ~ADDR_FLAG_DELIVERED; }
70 #define addr_is_delivered(addr) ((addr->flags & ADDR_FLAG_DELIVERED) != 0 )
72 #define addr_mark_defered(addr) { addr->flags |= ADDR_FLAG_DEFERED; }
73 #define addr_unmark_defered(addr) { addr->flags &= ~ADDR_FLAG_DEFERED; }
74 #define addr_is_defered(addr) ((addr->flags & ADDR_FLAG_DEFERED) != 0 )
76 #define addr_mark_failed(addr) { addr->flags |= ADDR_FLAG_FAILED; }
77 #define addr_unmark_failed(addr) { addr->flags &= ~ADDR_FLAG_FAILED; }
78 #define addr_is_failed(addr) ((addr->flags & ADDR_FLAG_FAILED) != 0 )
80 typedef struct _connect_route {
81 gchar *name;
82 gchar *filename;
84 gboolean is_local_net;
85 gboolean last_route;
87 GList *allowed_senders;
88 GList *denied_senders;
89 GList *allowed_recipients;
90 GList *denied_recipients;
92 interface *mail_host;
93 gboolean connect_error_fail;
94 GList *resolve_list;
95 gchar *helo_name;
96 gboolean do_correct_helo;
97 gboolean instant_helo;
98 gboolean do_pipelining;
99 gchar *auth_name;
100 gchar *auth_login;
101 gchar *auth_secret;
102 gchar *wrapper;
104 gchar *set_h_from_domain;
105 gchar *set_h_reply_to_domain;
106 gchar *set_return_path_domain;
107 GList *map_h_from_addresses;
108 GList *map_h_reply_to_addresses;
109 GList *map_h_mail_followup_to_addresses;
110 GList *map_return_path_addresses;
111 gboolean expand_h_sender_domain;
112 gboolean expand_h_sender_address;
114 gchar *pipe;
115 gboolean pipe_fromline;
116 gboolean pipe_fromhack;
117 } connect_route;
119 typedef struct _masqmail_conf {
120 gint mail_uid;
121 gint mail_gid;
123 gint orig_uid;
124 gint orig_gid;
126 gboolean run_as_user;
128 gchar *mail_dir;
129 gchar *lock_dir;
130 gchar *spool_dir;
131 gchar *log_dir;
133 gint debug_level;
134 gboolean use_syslog;
135 guint log_max_pri;
137 gchar *host_name;
138 GList *local_hosts;
139 GList *local_addresses;
140 GList *not_local_addresses;
141 GList *local_nets;
142 GList *listen_addresses;
144 /* ANSI C defines unsigned long to be at least 32bit
145 i.e. ca. 4GB max; that should be enough. */
146 gulong max_msg_size;
148 gboolean do_save_envelope_to;
150 gboolean defer_all;
151 gboolean do_relay;
153 GList *ident_trusted_nets;
155 gboolean do_queue;
157 gboolean do_verbose;
159 gchar *mbox_default;
160 GList *mbox_users;
161 GList *mda_users;
163 gchar *mda;
164 gboolean mda_fromline;
165 gboolean mda_fromhack;
167 gboolean pipe_fromline;
168 gboolean pipe_fromhack;
170 gchar *alias_file;
171 int (*localpartcmp) (const char *, const char *);
173 GList *local_net_routes;
174 GList *connect_routes; /* list of pairs which point to lists */
176 gchar *online_query;
178 gchar *errmsg_file;
179 gchar *warnmsg_file;
180 GList *warn_intervals;
181 gint max_defer_time;
183 gchar *log_user;
184 } masqmail_conf;
186 extern masqmail_conf conf;
188 typedef struct _table_pair {
189 gchar *key;
190 gpointer *value;
191 } table_pair;
194 /* must match the contents of prot_names[] in accept.c */
195 typedef enum _prot_id {
196 PROT_LOCAL = 0,
197 PROT_SMTP,
198 PROT_ESMTP,
199 PROT_NUM
200 } prot_id;
202 extern gchar *prot_names[];
204 typedef enum _header_id {
205 HEAD_FROM = 0,
206 HEAD_SENDER,
207 HEAD_TO,
208 HEAD_CC,
209 HEAD_BCC,
210 HEAD_DATE,
211 HEAD_MESSAGE_ID,
212 HEAD_REPLY_TO,
213 HEAD_SUBJECT,
214 HEAD_RETURN_PATH,
215 HEAD_ENVELOPE_TO,
216 HEAD_RECEIVED,
217 HEAD_NUM_IDS,
218 HEAD_STATUS,
219 HEAD_UNKNOWN = HEAD_NUM_IDS,
220 HEAD_NONE = -1,
221 } header_id;
223 typedef struct _header_name {
224 gchar *header;
225 header_id id;
226 } header_name;
228 typedef struct _header {
229 header_id id;
230 gchar *header;
231 gchar *value;
232 } header;
235 typedef struct _message {
236 gchar *uid;
238 gchar *received_host;
239 prot_id received_prot;
240 gchar *ident;
241 gint transfer_id; /* for multiple messages per transfer */
243 address *return_path;
244 GList *rcpt_list;
245 GList *non_rcpt_list;
247 GList *hdr_list;
248 GList *data_list;
250 gint data_size;
251 time_t received_time;
252 time_t warned_time;
254 gchar *full_sender_name;
255 } message;
257 typedef struct _msg_out {
258 message *msg;
260 address *return_path;
261 GList *rcpt_list;
263 GList *hdr_list;
264 GList *xtra_hdr_list;
265 } msg_out;
267 typedef struct _msgout_perhost {
268 gchar *host;
269 GList *msgout_list;
270 } msgout_perhost;
272 /* flags for accept() */
273 #define ACC_RCPT_FROM_HEAD 0x08 /* -t option, get rcpts from headers */
274 #define ACC_DOT_IGNORE 0x10 /* a dot on a line itself does not end the message (-oi option) */
275 #define ACC_MAIL_FROM_HEAD 0x40 /* get return path from header */
276 #define ACC_NODOT_RELAX 0x80 /* do not be picky if message ist not terminated by a dot on a line */
277 #define ACC_SAVE_ENVELOPE_TO 0x0100 /* save an existent Envelope-to header as X-Orig-Envelope-to */
279 #define DLVR_LOCAL 0x01
280 #define DLVR_LAN 0x02
281 #define DLVR_ONLINE 0x04
282 #define DLVR_ALL (DLVR_LOCAL|DLVR_LAN|DLVR_ONLINE)
284 /* transport flags */
285 #define MSGSTR_FROMLINE 0x01
286 #define MSGSTR_FROMHACK 0x02
288 typedef enum _accept_error {
289 AERR_OK = 0,
290 AERR_TIMEOUT,
291 AERR_EOF,
292 AERR_OVERFLOW,
293 AERR_SYNTAX,
294 AERR_NOSPOOL,
295 AERR_NORCPT,
296 AERR_SIZE, /* max msg size exeeded (SMTP SIZE) */
297 AERR_UNKNOWN
298 } accept_error;
300 #define BUF_LEN 1024
301 #define MAX_ADDRESS 256
302 #define MAX_DATALINE 4096
304 typedef enum _smtp_cmd_id {
305 SMTP_HELO = 0,
306 SMTP_EHLO,
307 SMTP_MAIL_FROM,
308 SMTP_RCPT_TO,
309 SMTP_DATA,
310 SMTP_QUIT,
311 SMTP_RSET,
312 SMTP_NOOP,
313 SMTP_HELP,
314 SMTP_NUM_IDS,
315 SMTP_EOF = -1,
316 SMTP_ERROR = -2,
317 } smtp_cmd_id;
319 typedef struct _smtp_cmd {
320 smtp_cmd_id id;
321 gchar *cmd;
322 } smtp_cmd;
324 typedef struct _smtp_connection {
325 gchar *remote_host;
327 prot_id prot;
328 gint next_id;
330 gboolean helo_seen;
331 gboolean from_seen;
332 gboolean rcpt_seen;
334 message *msg;
335 } smtp_connection;
337 /* alias.c*/
338 gboolean addr_is_local(address * addr);
339 GList *alias_expand(GList * alias_table, GList * rcpt_list, GList * non_rcpt_list);
341 /* child.c */
342 int child(const char *command);
344 /* conf.c */
345 void init_conf();
346 gboolean read_conf(gchar * filename);
347 connect_route *read_route(gchar * filename, gboolean is_local_net);
348 GList *read_route_list(GList * rf_list, gboolean is_local_net);
349 void destroy_route(connect_route * r);
350 void destroy_route_list(GList * list);
351 connect_route *create_local_route();
353 /* expand.c */
354 GList *var_table_rcpt(GList * var_table, address * rcpt);
355 GList *var_table_msg(GList * var_table, message * msg);
356 GList *var_table_conf(GList * var_table);
357 gint expand(GList * var_list, gchar * format, gchar * result, gint result_len);
359 /* message.c */
360 message *create_message(void);
361 void destroy_message(message * msg);
362 void destroy_msg_list(GList * msg_list);
363 void msg_free_data(message * msg);
364 gint msg_calc_size(message * msg, gboolean is_smtp);
366 msg_out *create_msg_out(message * msg);
367 msg_out *clone_msg_out(msg_out * msgout_orig);
368 void destroy_msg_out(msg_out * msgout);
369 void destroy_msg_out_list(GList * msgout_list);
371 /* address.c */
372 address *create_address(gchar * path, gboolean is_rfc821);
373 address *create_address_qualified(gchar * path, gboolean is_rfc821, gchar * domain);
374 address *create_address_pipe(gchar * path);
375 void destroy_address(address * addr);
376 address *copy_modify_address(const address * orig, gchar * l_part, gchar * dom);
377 #define copy_address(addr) copy_modify_address(addr, NULL, NULL)
378 gboolean addr_isequal(address * addr1, address * addr2, int (*cmpfunc) (const char*, const char*));
379 gboolean addr_isequal_parent(address * addr1, address * addr2, int (*cmpfunc) (const char*, const char*));
380 address *addr_find_ancestor(address * addr);
381 gboolean addr_is_delivered_children(address * addr);
382 gboolean addr_is_finished_children(address * addr);
383 gchar *addr_string(address * addr);
385 /* accept.c */
386 accept_error accept_message(FILE * in, message * msg, guint flags);
387 accept_error accept_message_prepare(message * msg, guint flags);
389 /* header.c */
390 gchar *rec_timestamp();
391 GList *find_header(GList * hdr_list, header_id id, gchar * hdr_str);
392 void header_unfold(header * hdr);
393 void header_fold(header * hdr, unsigned int maxlen);
394 header *create_header(header_id id, gchar * fmt, ...);
395 void destroy_header(header * hdr);
396 header *copy_header(header * hdr);
397 header *get_header(gchar * line);
399 /* smtp_in.c */
400 void smtp_in(FILE * in, FILE * out, gchar * remote_host, gchar * ident);
402 /* listen.c */
403 void listen_port(GList * addr_list, gint qival, char *argv[]);
405 /* parse.c */
406 gboolean split_address(const gchar * path, gchar ** local_part, gchar ** domain, gboolean is_rfc821);
407 gboolean parse_address_rfc822(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);
408 gboolean parse_address_rfc821(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);
409 address *_create_address(gchar * string, gchar ** end, gboolean is_rfc821);
410 address *create_address_rfc821(gchar * string, gchar ** end);
411 address *create_address_rfc822(gchar * string, gchar ** end);
412 GList *addr_list_append_rfc822(GList * addr_list, gchar * string, gchar * domain);
414 /* connect.c */
415 mxip_addr *connect_hostlist(int *psockfd, gchar * host, guint port, GList * addr_list);
416 mxip_addr *connect_resolvelist(int *psockfd, gchar * host, guint port, GList * res_funcs);
418 /* deliver.c */
419 void msg_rcptlist_local(GList * rcpt_list, GList **, GList **);
420 gboolean deliver_local(msg_out * msgout);
421 gboolean deliver_msglist_host(connect_route * route, GList * msg_list, gchar * host, GList * res_list);
422 gboolean deliver_route_msgout_list(connect_route * route, GList * msgout_list);
423 gboolean deliver_route_msg_list(connect_route * route, GList * msgout_list);
424 gboolean deliver_finish(msg_out * msgout);
425 gboolean deliver_finish_list(GList * msgout_list);
426 gboolean deliver_msg_list(GList * msg_list, guint flags);
427 gboolean deliver(message * msg);
429 /* fail_msg.c */
430 gboolean fail_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args);
431 gboolean warn_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args);
433 /* interface.c */
434 gboolean init_sockaddr(struct sockaddr_in *name, interface * iface);
435 int make_server_socket(interface * iface);
437 /* local.c */
438 gboolean append_file(message * msg, GList * hdr_list, gchar * user);
439 gboolean pipe_out(message * msg, GList * hdr_list, address * rcpt, gchar * cmd, guint flags);
441 /* log.c */
442 gchar *ext_strerror(int err);
443 gboolean logopen(void);
444 void logclose(void);
445 void vlogwrite(int pri, const char *fmt, va_list args);
446 void logwrite(int pri, const char *fmt, ...);
447 void debugf(const char *fmt, ...);
448 void vdebugf(const char *fmt, va_list args);
449 void maillog(const char *fmt, ...);
451 /* spool.c */
452 gboolean spool_read_data(message * msg);
453 message *msg_spool_read(gchar * uid, gboolean do_readdata);
454 gboolean spool_write(message * msg, gboolean do_writedata);
455 gboolean spool_lock(gchar * uid);
456 gboolean spool_unlock(gchar * uid);
457 gboolean spool_delete_all(message * msg);
459 /* queue.c */
460 GList *read_queue(gboolean do_readdata);
461 gboolean queue_run(void);
462 gboolean queue_run_online(void);
463 void queue_list(void);
464 gboolean queue_delete(gchar * uid);
466 /* online.c */
467 gchar *online_query();
469 /* permissions.c */
470 gboolean is_ingroup(uid_t uid, gid_t gid);
471 void set_euidgid(gint uid, gint gid, uid_t * old_uid, gid_t * old_gid);
472 void set_identity(uid_t old_uid, gchar * task_name);
474 /* rewrite.c */
475 gboolean set_address_header_domain(header * hdr, gchar * domain);
476 gboolean map_address_header(header * hdr, GList * table);
478 /* route.c */
479 msgout_perhost *create_msgout_perhost(gchar * host);
480 void destroy_msgout_perhost(msgout_perhost * mo_ph);
481 void rewrite_headers(msg_out * msgout, connect_route * route);
482 void split_rcpts(GList* rcpt_list, GList* localnets, GList** rl_local, GList** rl_localnet, GList** rl_others);
483 GList* local_rcpts(GList* rcpt_list);
484 GList* remote_rcpts(GList* rcpt_list);
485 gboolean route_strip_msgout(connect_route * route, msg_out * msgout);
486 msg_out *route_prepare_msgout(connect_route * route, msg_out * msgout);
487 GList *route_msgout_list(connect_route * route, GList * msgout_list);
488 gboolean route_sender_is_allowed(connect_route * route, address * ret_path);
489 void route_split_rcpts(connect_route * route, GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list);
491 /* tables.c */
492 table_pair *create_pair(gchar * key, gpointer value);
493 table_pair *create_pair_string(gchar * key, gpointer value);
494 table_pair *parse_table_pair(gchar * line, char delim);
495 gpointer *table_find_func(GList * table_list, gchar * key, int (*cmp_func) (const char *, const char *));
496 gpointer *table_find(GList * table_list, gchar * key);
497 gpointer *table_find_case(GList * table_list, gchar * key);
498 gpointer *table_find_fnmatch(GList * table_list, gchar * key);
499 GList *table_read(gchar * fname, gchar delim);
500 void destroy_table(GList * table);
502 /* timeival.c */
503 gint time_interval(gchar * str);
505 /* permissions.c */
506 gboolean is_privileged_user(uid_t uid);
508 /* other things */
510 #define foreach(list, node)\
511 for((node) = g_list_first(list);\
512 (node);\
513 (node) = g_list_next(node))
515 #ifdef ENABLE_DEBUG
516 #define DEBUG(level) if(level <= conf.debug_level)
517 #else
518 /* hopefully the compiler optmizes this away... */
519 #define DEBUG(level) if(0)
520 #endif
522 #define LOG_VERBOSE 0x100
524 #ifndef HAVE_GETLINE
525 #define getline(buf, size, file) getdelim(buf, size, '\n', file)
526 #endif
528 #ifndef HAVE_FDATASYNC
529 #define fdatasync(fd) fsync(fd)
530 #endif
532 #ifndef CONF_DIR
533 #define CONF_DIR "/etc/masqmail"
534 #endif
536 #define CONF_FILE CONF_DIR"/masqmail.conf"
538 #define PIDFILEDIR "/var/run/masqmail/"
540 #ifndef va_copy
541 #ifdef __va_copy
542 #define va_copy(ap1, ap2) __va_copy(ap1, ap2)
543 #else
544 #define va_copy(ap1, ap2) G_VA_COPY(ap1, ap2)
545 #endif
546 #endif
548 /* *BSD needs this: */
549 extern char **environ;