masqmail
view src/masqmail.h @ 117:5ec5e6637049
added server-side SMTP SIZE support (patch by Paolo)
``SIZE 0'' (= unlimited) is currently not supported
client-side support was already implemented
| author | meillo@marmaro.de |
|---|---|
| date | Thu, 01 Jul 2010 13:08:53 +0200 |
| parents | c678d0342451 |
| children | 5b621742b2e7 |
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 */
18 #include <config.h>
20 #include <stdio.h>
21 #include <stdarg.h>
22 #include <errno.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <ctype.h>
26 #include <unistd.h>
27 #include <pwd.h>
28 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <netinet/in.h>
31 #include <time.h>
32 #include <sys/time.h>
33 #include <netinet/in.h>
34 #include <arpa/inet.h>
35 #include <netdb.h>
36 #include <syslog.h>
37 #include <signal.h>
38 #include <fcntl.h>
40 #include <glib.h>
42 #ifdef ENABLE_IDENT
43 #include "libident/ident.h"
44 #endif
46 #include "lookup.h"
48 typedef struct _interface {
49 gchar *address;
50 gint port;
51 } interface;
53 #define ADDR_FLAG_DELIVERED 0x01
54 #define ADDR_FLAG_DEFERED 0x02
55 #define ADDR_FLAG_FAILED 0x04
56 #define ADDR_FLAG_LAST_ROUTE 0x40
57 #define ADDR_FLAG_NOEXPAND 0x80
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 gchar *protocol;
86 gboolean is_local_net;
87 gboolean last_route;
89 GList *allowed_return_paths;
90 GList *not_allowed_return_paths;
91 GList *allowed_mail_locals;
92 GList *not_allowed_mail_locals;
93 GList *allowed_rcpt_domains;
94 GList *not_allowed_rcpt_domains;
96 interface *mail_host;
97 gchar *wrapper;
98 gboolean connect_error_fail;
100 gchar *helo_name;
101 gboolean do_correct_helo;
102 gboolean do_pipelining;
104 gchar *set_h_from_domain;
105 gchar *set_h_reply_to_domain;
106 gchar *set_return_path_domain;
108 GList *map_h_from_addresses;
109 GList *map_h_reply_to_addresses;
110 GList *map_h_mail_followup_to_addresses;
111 GList *map_return_path_addresses;
113 gboolean expand_h_sender_domain;
114 gboolean expand_h_sender_address;
116 GList *resolve_list;
118 gchar *auth_name;
119 gchar *auth_login;
120 gchar *auth_secret;
122 gchar *pop3_login;
124 gchar *pipe;
126 gboolean pipe_fromline;
127 gboolean pipe_fromhack;
128 } connect_route;
130 typedef struct _get_conf {
131 gchar *protocol;
132 gchar *server_name;
133 guint server_port;
134 gchar *wrapper;
135 gchar *login_user;
136 gchar *login_pass;
137 address *address;
138 address *return_path;
139 gboolean do_keep;
140 gboolean do_uidl;
141 gboolean do_uidl_dele;
142 gint max_size;
143 gboolean max_size_delete;
144 gint max_count;
146 GList *resolve_list;
148 } get_conf;
150 typedef struct _masqmail_conf {
151 gint mail_uid;
152 gint mail_gid;
154 gint orig_uid;
155 gint orig_gid;
157 gboolean run_as_user;
159 gchar *mail_dir;
160 gchar *lock_dir;
161 gchar *spool_dir;
162 gchar *log_dir;
164 gint debug_level;
165 gboolean use_syslog;
166 guint log_max_pri;
168 gchar *host_name;
169 GList *local_hosts;
170 GList *local_addresses;
171 GList *not_local_addresses;
172 GList *local_nets;
173 GList *listen_addresses;
175 guint remote_port;
177 /* ANSI C defines unsigned long to be at least 32bit
178 i.e. ca. 4GB max; that should be enough. */
179 gulong max_msg_size;
181 gboolean do_save_envelope_to;
183 gboolean defer_all;
184 gboolean do_relay;
186 GList *ident_trusted_nets;
188 gboolean do_queue;
190 gboolean do_verbose;
192 gchar *mbox_default;
193 GList *mbox_users;
194 GList *mda_users;
195 GList *maildir_users;
197 gchar *mda;
198 gboolean mda_fromline;
199 gboolean mda_fromhack;
201 gboolean pipe_fromline;
202 gboolean pipe_fromhack;
204 gchar *alias_file;
205 int (*alias_local_cmp) (const char *, const char *);
207 GList *local_net_routes;
208 GList *connect_routes; /* list of pairs which point to lists */
210 gchar *online_detect;
211 gchar *online_file;
212 gchar *online_pipe;
213 interface *mserver_iface;
215 GList *get_names;
216 GList *online_gets; /* list of pairs which point to lists */
218 gchar *errmsg_file;
219 gchar *warnmsg_file;
220 GList *warn_intervals;
221 gint max_defer_time;
223 gchar *log_user;
224 } masqmail_conf;
226 extern masqmail_conf conf;
228 typedef struct _table_pair {
229 gchar *key;
230 gpointer *value;
231 } table_pair;
234 typedef enum _prot_id {
235 PROT_LOCAL = 0,
236 PROT_BSMTP,
237 PROT_SMTP,
238 PROT_ESMTP,
239 PROT_POP3,
240 PROT_APOP,
241 PROT_NUM
242 } prot_id;
244 extern gchar *prot_names[];
246 typedef enum _header_id {
247 HEAD_FROM = 0,
248 HEAD_SENDER,
249 HEAD_TO,
250 HEAD_CC,
251 HEAD_BCC,
252 HEAD_DATE,
253 HEAD_MESSAGE_ID,
254 HEAD_REPLY_TO,
255 HEAD_SUBJECT,
256 HEAD_RETURN_PATH,
257 HEAD_ENVELOPE_TO,
258 HEAD_RECEIVED,
259 HEAD_NUM_IDS,
260 HEAD_STATUS,
261 HEAD_UNKNOWN = HEAD_NUM_IDS,
262 HEAD_NONE = -1,
263 } header_id;
265 typedef struct _header_name {
266 gchar *header;
267 header_id id;
268 } header_name;
270 typedef struct _header {
271 header_id id;
272 gchar *header;
273 gchar *value;
274 } header;
277 typedef struct _message {
278 gchar *uid;
280 gchar *received_host;
281 prot_id received_prot;
282 gchar *ident;
283 gint transfer_id; /* for multiple messages per transfer */
285 address *return_path;
286 GList *rcpt_list;
287 GList *non_rcpt_list;
289 GList *hdr_list;
290 GList *data_list;
292 gint data_size;
293 time_t received_time;
294 time_t warned_time;
296 gchar *full_sender_name;
297 } message;
299 typedef struct _msg_out {
300 message *msg;
302 address *return_path;
303 GList *rcpt_list;
305 GList *hdr_list;
306 GList *xtra_hdr_list;
307 } msg_out;
309 typedef struct _msgout_perhost {
310 gchar *host;
311 GList *msgout_list;
312 } msgout_perhost;
314 /* flags for accept() */
315 #define ACC_DEL_RCPTS 0x02 /* -t option, delete rcpts that were given as cmd args */
316 #define ACC_RCPT_FROM_HEAD 0x08 /* -t option, get rcpts from headers */
317 #define ACC_DOT_IGNORE 0x10 /* a dot on a line itself does not end the message (-oi option) */
318 #define ACC_MAIL_FROM_HEAD 0x40 /* get return path from header */
319 #define ACC_NODOT_RELAX 0x80 /* do not be picky if message ist not terminated by a dot on a line */
320 #define ACC_SAVE_ENVELOPE_TO 0x0100 /* save an existent Envelope-to header as X-Orig-Envelope-to */
322 #define DLVR_LOCAL 0x01
323 #define DLVR_LAN 0x02
324 #define DLVR_ONLINE 0x04
325 #define DLVR_ALL (DLVR_LOCAL|DLVR_LAN|DLVR_ONLINE)
327 /* transport flags */
328 #define MSGSTR_FROMLINE 0x01
329 #define MSGSTR_FROMHACK 0x02
331 typedef enum _accept_error {
332 AERR_OK = 0,
333 AERR_TIMEOUT,
334 AERR_EOF,
335 AERR_OVERFLOW,
336 AERR_SYNTAX,
337 AERR_NOSPOOL,
338 AERR_NORCPT,
339 AERR_SIZE, /* max msg size exeeded (SMTP SIZE) */
340 AERR_UNKNOWN
341 } accept_error;
343 #define BUF_LEN 1024
344 #define MAX_ADDRESS 256
345 #define MAX_DATALINE 4096
347 typedef enum _smtp_cmd_id {
348 SMTP_HELO = 0,
349 SMTP_EHLO,
350 SMTP_MAIL_FROM,
351 SMTP_RCPT_TO,
352 SMTP_DATA,
353 SMTP_QUIT,
354 SMTP_RSET,
355 SMTP_NOOP,
356 SMTP_HELP,
357 SMTP_NUM_IDS,
358 SMTP_EOF = -1,
359 SMTP_ERROR = -2,
360 } smtp_cmd_id;
362 typedef struct _smtp_cmd {
363 smtp_cmd_id id;
364 gchar *cmd;
365 } smtp_cmd;
367 typedef struct _smtp_connection {
368 gchar *remote_host;
370 prot_id prot;
371 gint next_id;
373 gboolean helo_seen;
374 gboolean from_seen;
375 gboolean rcpt_seen;
377 message *msg;
378 } smtp_connection;
380 /* alias.c*/
381 gboolean addr_is_local(address * addr);
382 GList *alias_expand(GList * alias_table, GList * rcpt_list, GList * non_rcpt_list);
384 /* child.c */
385 int child(const char *command);
387 /* conf.c */
388 void init_conf();
389 gboolean read_conf(gchar * filename);
390 connect_route *read_route(gchar * filename, gboolean is_local_net);
391 GList *read_route_list(GList * rf_list, gboolean is_local_net);
392 void destroy_route(connect_route * r);
393 void destroy_route_list(GList * list);
394 get_conf *read_get_conf(gchar * filename);
395 void destroy_get_conf(get_conf * gc);
396 connect_route *create_local_route();
398 /* expand.c */
399 GList *var_table_rcpt(GList * var_table, address * rcpt);
400 GList *var_table_msg(GList * var_table, message * msg);
401 GList *var_table_conf(GList * var_table);
402 gint expand(GList * var_list, gchar * format, gchar * result, gint result_len);
404 /* message.c */
405 message *create_message(void);
406 void destroy_message(message * msg);
407 void destroy_msg_list(GList * msg_list);
408 void msg_free_data(message * msg);
409 gint msg_calc_size(message * msg, gboolean is_smtp);
411 msg_out *create_msg_out(message * msg);
412 msg_out *clone_msg_out(msg_out * msgout_orig);
413 GList *create_msg_out_list(GList * msg_list);
414 void destroy_msg_out(msg_out * msgout);
415 void destroy_msg_out_list(GList * msgout_list);
417 /* address.c */
418 address *create_address(gchar * path, gboolean is_rfc821);
419 address *create_address_qualified(gchar * path, gboolean is_rfc821, gchar * domain);
420 address *create_address_pipe(gchar * path);
421 void destroy_address(address * addr);
422 address *copy_modify_address(const address * orig, gchar * l_part, gchar * dom);
423 #define copy_address(addr) copy_modify_address(addr, NULL, NULL)
424 gboolean addr_isequal(address * addr1, address * addr2);
425 gboolean addr_isequal_parent(address * addr1, address * addr2);
426 address *addr_find_ancestor(address * addr);
427 gboolean addr_is_delivered_children(address * addr);
428 gboolean addr_is_finished_children(address * addr);
429 gchar *addr_string(address * addr);
430 gint addr_match(address * addr1, address * addr2);
432 /* accept.c */
433 accept_error accept_message(FILE * in, message * msg, guint flags);
434 accept_error accept_message_prepare(message * msg, guint flags);
436 /* header.c */
437 gchar *rec_timestamp();
438 GList *find_header(GList * hdr_list, header_id id, gchar * hdr_str);
439 void header_unfold(header * hdr);
440 void header_fold(header * hdr);
441 header *create_header(header_id id, gchar * fmt, ...);
442 void destroy_header(header * hdr);
443 header *copy_header(header * hdr);
444 header *get_header(gchar * line);
446 /* smtp_in.c */
447 void smtp_in(FILE * in, FILE * out, gchar * remote_host, gchar * ident);
449 /* listen.c */
450 void listen_port(GList * addr_list, gint qival, char *argv[]);
452 /* parse.c */
453 gboolean split_address(const gchar * path, gchar ** local_part, gchar ** domain, gboolean is_rfc821);
454 gboolean parse_address_rfc822(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);
455 gboolean parse_address_rfc821(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);
456 address *_create_address(gchar * string, gchar ** end, gboolean is_rfc821);
457 address *create_address_rfc821(gchar * string, gchar ** end);
458 address *create_address_rfc822(gchar * string, gchar ** end);
459 GList *addr_list_append_rfc822(GList * addr_list, gchar * string, gchar * domain);
460 gboolean addr_isequal(address * addr1, address * addr2);
462 /* connect.c */
463 mxip_addr *connect_hostlist(int *psockfd, gchar * host, guint port, GList * addr_list);
464 mxip_addr *connect_resolvelist(int *psockfd, gchar * host, guint port, GList * res_funcs);
466 /* deliver.c */
467 void msg_rcptlist_local(GList * rcpt_list, GList **, GList **);
468 gboolean deliver_local(msg_out * msgout);
469 gboolean deliver_msglist_host(connect_route * route, GList * msg_list, gchar * host, GList * res_list);
470 gboolean deliver_route_msgout_list(connect_route * route, GList * msgout_list);
471 gboolean deliver_route_msg_list(connect_route * route, GList * msgout_list);
472 gboolean deliver_finish(msg_out * msgout);
473 gboolean deliver_finish_list(GList * msgout_list);
474 gboolean deliver_msg_list(GList * msg_list, guint flags);
475 gboolean deliver(message * msg);
477 /* fail_msg.c */
478 gboolean fail_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args);
479 gboolean warn_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args);
481 /* get.c */
482 gboolean get_from_file(gchar * fname);
483 gboolean get_from_name(gchar * name);
484 gboolean get_all(void);
485 void get_online(void);
486 void get_daemon(gint gival, char *argv[]);
487 gboolean pop_before_smtp(gchar * fname);
489 /* interface.c */
490 gboolean init_sockaddr(struct sockaddr_in *name, interface * iface);
491 int make_server_socket(interface * iface);
493 /* local.c */
494 gboolean append_file(message * msg, GList * hdr_list, gchar * user);
495 gboolean maildir_out(message * msg, GList * hdr_list, gchar * user, guint flags);
496 gboolean pipe_out(message * msg, GList * hdr_list, address * rcpt, gchar * cmd, guint flags);
498 /* log.c */
499 gchar *ext_strerror(int err);
500 gboolean logopen(void);
501 void logclose(void);
502 void vlogwrite(int pri, const char *fmt, va_list args);
503 void logwrite(int pri, const char *fmt, ...);
504 void debugf(const char *fmt, ...);
505 void vdebugf(const char *fmt, va_list args);
506 void maillog(const char *fmt, ...);
508 /* spool.c */
509 gboolean spool_read_data(message * msg);
510 gboolean spool_read_data(message * msg);
511 message *msg_spool_read(gchar * uid, gboolean do_readdata);
512 gboolean spool_write(message * msg, gboolean do_writedata);
513 gboolean spool_lock(gchar * uid);
514 gboolean spool_unlock(gchar * uid);
515 gboolean spool_delete_all(message * msg);
517 /* queue.c */
518 GList *read_queue(gboolean do_readdata);
519 gboolean queue_run(void);
520 gboolean queue_run_online(void);
521 void queue_list(void);
522 gboolean queue_delete(gchar * uid);
524 /* online.c */
525 gchar *detect_online();
526 void set_online_name(gchar * name);
528 /* permissions.c */
529 gboolean is_ingroup(uid_t uid, gid_t gid);
530 void set_euidgid(gint uid, gint gid, uid_t * old_uid, gid_t * old_gid);
531 void set_identity(uid_t old_uid, gchar * task_name);
533 /* rewrite.c */
534 gboolean set_address_header_domain(header * hdr, gchar * domain);
535 gboolean map_address_header(header * hdr, GList * table);
537 /* route.c */
538 msgout_perhost *create_msgout_perhost(gchar * host);
539 void destroy_msgout_perhost(msgout_perhost * mo_ph);
540 void rewrite_headers(msg_out * msgout, connect_route * route);
541 void rcptlist_with_one_of_hostlist(GList * rcpt_list, GList * host_list, GList **, GList **);
542 void rcptlist_with_addr_is_local(GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list);
543 gboolean route_strip_msgout(connect_route * route, msg_out * msgout);
544 msg_out *route_prepare_msgout(connect_route * route, msg_out * msgout);
545 GList *route_msgout_list(connect_route * route, GList * msgout_list);
546 gboolean route_is_allowed_return_path(connect_route * route, address * ret_path);
547 gboolean route_is_allowed_mail_local(connect_route * route, address * ret_path);
548 void msg_rcptlist_route(connect_route * route, GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list);
550 /* tables.c */
551 table_pair *create_pair(gchar * key, gpointer value);
552 table_pair *create_pair_string(gchar * key, gpointer value);
553 table_pair *parse_table_pair(gchar * line, char delim);
554 gpointer *table_find_func(GList * table_list, gchar * key, int (*cmp_func) (const char *, const char *));
555 gpointer *table_find(GList * table_list, gchar * key);
556 gpointer *table_find_case(GList * table_list, gchar * key);
557 gpointer *table_find_fnmatch(GList * table_list, gchar * key);
558 GList *table_read(gchar * fname, gchar delim);
559 void destroy_table(GList * table);
561 /* timeival.c */
562 gint time_interval(gchar * str, gint * pos);
564 /* permissions.c */
565 gboolean is_privileged_user(uid_t uid);
567 /* other things */
569 #define foreach(list, node)\
570 for((node) = g_list_first(list);\
571 (node);\
572 (node) = g_list_next(node))
574 #ifdef ENABLE_DEBUG
575 #define DEBUG(level) if(level <= conf.debug_level)
576 #else
577 /* hopefully the compiler optmizes this away... */
578 #define DEBUG(level) if(0)
579 #endif
581 #define LOG_VERBOSE 0x100
583 #ifndef HAVE_GETLINE
584 #define getline(buf, size, file) getdelim(buf, size, '\n', file)
585 #endif
587 #ifndef HAVE_FDATASYNC
588 #define fdatasync(fd) fsync(fd)
589 #endif
591 #ifndef CONF_DIR
592 #define CONF_DIR "/etc/masqmail"
593 #endif
595 #define CONF_FILE CONF_DIR"/masqmail.conf"
597 #define PIDFILEDIR "/var/run/masqmail/"
599 #ifndef va_copy
600 #ifdef __va_copy
601 #define va_copy(ap1, ap2) __va_copy(ap1, ap2)
602 #else
603 #define va_copy(ap1, ap2) G_VA_COPY(ap1, ap2)
604 #endif
605 #endif
607 /* *BSD needs this: */
608 extern char **environ;