masqmail: 3f923f97563b src/masqmail.h

masqmail

view src/masqmail.h @ 375:3f923f97563b

local_hosts now understands glob patterns like `*example.org'.

author	markus schnalke <meillo@marmaro.de>
date	Sat, 14 Jan 2012 18:14:07 +0100
parents	41958685480d
children	5781ba87df95

line source

2 ** MasqMail

3 ** Copyright (C) 1999-2001 Oliver Kurth

4 ** Copyright (C) 2010 markus schnalke <meillo@marmaro.de>

6 ** This program is free software; you can redistribute it and/or modify

7 ** it under the terms of the GNU General Public License as published by

8 ** the Free Software Foundation; either version 2 of the License, or

9 ** (at your option) any later version.

11 ** This program is distributed in the hope that it will be useful,

12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of

13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

14 ** GNU General Public License for more details.

16 ** You should have received a copy of the GNU General Public License

17 ** along with this program; if not, write to the Free Software

18 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

20 #include <config.h>

22 #include <stdio.h>

23 #include <stdarg.h>

24 #include <errno.h>

25 #include <stdlib.h>

26 #include <string.h>

27 #include <ctype.h>

28 #include <unistd.h>

29 #include <pwd.h>

30 #include <sys/types.h>

31 #include <sys/socket.h>

32 #include <netinet/in.h>

33 #include <time.h>

34 #include <sys/time.h>

35 #include <netinet/in.h>

36 #include <arpa/inet.h>

37 #include <netdb.h>

38 #include <syslog.h>

39 #include <signal.h>

40 #include <fcntl.h>

42 #include <glib.h>

44 #ifdef ENABLE_IDENT

45 #include "libident/ident.h"

46 #endif

48 #include "lookup.h"

50 typedef struct _interface {

51 gchar *address;

52 gint port;

53 } interface;

55 #define ADDR_FLAG_DELIVERED 0x01

56 #define ADDR_FLAG_DEFERED 0x02

57 #define ADDR_FLAG_FAILED 0x04

58 #define ADDR_FLAG_LAST_ROUTE 0x40

60 typedef struct _address {

61 gchar *address;

62 gchar *local_part;

63 gchar *domain;

64 gint flags;

65 GList *children;

66 struct _address *parent;

67 } address;

69 #define addr_mark_delivered(addr) { addr->flags |= ADDR_FLAG_DELIVERED; }

70 #define addr_unmark_delivered(addr) { addr->flags &= ~ADDR_FLAG_DELIVERED; }

71 #define addr_is_delivered(addr) ((addr->flags & ADDR_FLAG_DELIVERED) != 0 )

73 #define addr_mark_defered(addr) { addr->flags |= ADDR_FLAG_DEFERED; }

74 #define addr_unmark_defered(addr) { addr->flags &= ~ADDR_FLAG_DEFERED; }

75 #define addr_is_defered(addr) ((addr->flags & ADDR_FLAG_DEFERED) != 0 )

77 #define addr_mark_failed(addr) { addr->flags |= ADDR_FLAG_FAILED; }

78 #define addr_unmark_failed(addr) { addr->flags &= ~ADDR_FLAG_FAILED; }

79 #define addr_is_failed(addr) ((addr->flags & ADDR_FLAG_FAILED) != 0 )

81 typedef struct _connect_route {

82 gchar *name;

83 gchar *filename;

85 gboolean is_perma;

86 gboolean last_route;

88 GList *allowed_senders;

89 GList *denied_senders;

90 GList *allowed_recipients;

91 GList *denied_recipients;

93 interface *mail_host;

94 gboolean connect_error_fail;

95 GList *resolve_list;

96 gchar *helo_name;

97 gboolean do_correct_helo;

98 gboolean instant_helo;

99 gboolean do_pipelining;

100 gchar *auth_name;

101 gchar *auth_login;

102 gchar *auth_secret;

103 gchar *wrapper;

105 gchar *set_h_from_domain;

106 gchar *set_h_reply_to_domain;

107 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;

112 gboolean expand_h_sender_domain;

113 gboolean expand_h_sender_address;

115 gchar *pipe;

116 gboolean pipe_fromline;

117 gboolean pipe_fromhack;

118 } connect_route;

120 typedef struct _masqmail_conf {

121 gint mail_uid;

122 gint mail_gid;

124 gint orig_uid;

125 gint orig_gid;

127 gboolean run_as_user;

129 gchar *mail_dir;

130 gchar *lock_dir;

131 gchar *spool_dir;

132 gchar *log_dir;

134 gint debug_level;

135 gboolean use_syslog;

136 guint log_max_pri;

138 gchar *host_name;

139 GList *local_hosts;

140 GList *local_addresses;

141 GList *not_local_addresses;

142 GList *listen_addresses;

145 ** ANSI C defines unsigned long to be at least 32bit

146 ** i.e. ca. 4GB max; that should be enough.

148 gulong max_msg_size;

150 gboolean do_save_envelope_to;

152 gboolean defer_all;

153 gboolean do_relay;

155 GList *ident_trusted_nets;

157 gboolean do_queue;

159 gboolean do_verbose;

161 gchar *mbox_default;

162 GList *mbox_users;

163 GList *mda_users;

165 gchar *mda;

166 gboolean mda_fromline;

167 gboolean mda_fromhack;

169 gboolean pipe_fromline;

170 gboolean pipe_fromhack;

172 gchar *alias_file;

173 int (*localpartcmp) (const char *, const char *);

175 GList *perma_routes;

176 GList *query_routes; /* list of pairs which point to lists */

178 gchar *online_query;

180 gchar *errmsg_file;

181 gchar *warnmsg_file;

182 GList *warn_intervals;

183 gint max_defer_time;

185 gchar *log_user;

186 } masqmail_conf;

188 extern masqmail_conf conf;

190 typedef struct _table_pair {

191 gchar *key;

192 gpointer *value;

193 } table_pair;

196 /* must match the contents of prot_names[] in accept.c */

197 typedef enum _prot_id {

198 PROT_LOCAL = 0,

199 PROT_SMTP,

200 PROT_ESMTP,

201 PROT_NUM

202 } prot_id;

204 extern gchar *prot_names[];

206 typedef enum _header_id {

207 HEAD_FROM = 0,

208 HEAD_SENDER,

209 HEAD_TO,

210 HEAD_CC,

211 HEAD_BCC,

212 HEAD_DATE,

213 HEAD_MESSAGE_ID,

214 HEAD_REPLY_TO,

215 HEAD_SUBJECT,

216 HEAD_RETURN_PATH,

217 HEAD_ENVELOPE_TO,

218 HEAD_RECEIVED,

219 HEAD_NUM_IDS,

220 HEAD_STATUS,

221 HEAD_UNKNOWN = HEAD_NUM_IDS,

222 HEAD_NONE = -1,

223 } header_id;

225 typedef struct _header_name {

226 gchar *header;

227 header_id id;

228 } header_name;

230 typedef struct _header {

231 header_id id;

232 gchar *header;

233 gchar *value;

234 } header;

237 typedef struct _message {

238 gchar *uid;

240 gchar *received_host;

241 prot_id received_prot;

242 gchar *ident;

243 gint transfer_id; /* for multiple messages per transfer */

245 address *return_path;

246 GList *rcpt_list;

247 GList *non_rcpt_list;

249 GList *hdr_list;

250 GList *data_list;

252 gint data_size;

253 time_t received_time;

254 time_t warned_time;

256 gchar *full_sender_name;

257 } message;

259 typedef struct _msg_out {

260 message *msg;

262 address *return_path;

263 GList *rcpt_list;

265 GList *hdr_list;

266 GList *xtra_hdr_list; /* rewritten headers */

267 } msg_out;

269 typedef struct _msgout_perhost {

270 gchar *host;

271 GList *msgout_list;

272 } msgout_perhost;

274 /* flags for accept() */

275 #define ACC_RCPT_FROM_HEAD 0x08 /* -t option, get rcpts from headers */

276 #define ACC_DOT_IGNORE 0x10 /* a dot on a line itself does not end the message (-oi option) */

277 #define ACC_MAIL_FROM_HEAD 0x40 /* get return path from header */

278 #define ACC_NODOT_RELAX 0x80 /* do not be picky if message ist not terminated by a dot on a line */

279 #define ACC_SAVE_ENVELOPE_TO 0x0100 /* save an existent Envelope-to header as X-Orig-Envelope-to */

281 #define DLVR_LOCAL 0x01

282 #define DLVR_ONLINE 0x02

283 #define DLVR_ALL (DLVR_LOCAL|DLVR_ONLINE)

285 /* transport flags */

286 #define MSGSTR_FROMLINE 0x01

287 #define MSGSTR_FROMHACK 0x02

289 typedef enum _accept_error {

290 AERR_OK = 0,

291 AERR_TIMEOUT,

292 AERR_EOF,

293 AERR_OVERFLOW,

294 AERR_SYNTAX,

295 AERR_NOSPOOL,

296 AERR_NORCPT,

297 AERR_SIZE, /* max msg size exeeded (SMTP SIZE) */

298 AERR_UNKNOWN

299 } accept_error;

301 #define BUF_LEN 1024

302 #define MAX_ADDRESS 256

303 #define MAX_DATALINE 4096

305 typedef enum _smtp_cmd_id {

306 SMTP_HELO = 0,

307 SMTP_EHLO,

308 SMTP_MAIL_FROM,

309 SMTP_RCPT_TO,

310 SMTP_DATA,

311 SMTP_QUIT,

312 SMTP_RSET,

313 SMTP_NOOP,

314 SMTP_HELP,

315 SMTP_NUM_IDS,

316 SMTP_EOF = -1,

317 SMTP_ERROR = -2,

318 } smtp_cmd_id;

320 typedef struct _smtp_cmd {

321 smtp_cmd_id id;

322 gchar *cmd;

323 } smtp_cmd;

325 typedef struct _smtp_connection {

326 gchar *remote_host;

328 prot_id prot;

329 gint next_id;

331 gboolean helo_seen;

332 gboolean from_seen;

333 gboolean rcpt_seen;

335 message *msg;

336 } smtp_connection;

338 /* alias.c*/

339 gboolean addr_is_local(address *addr);

340 GList *alias_expand(GList *alias_table, GList *rcpt_list, GList *non_rcpt_list);

342 /* child.c */

343 int child(const char *command);

345 /* conf.c */

346 void init_conf();

347 gboolean read_conf(gchar *filename);

348 connect_route *read_route(gchar *filename, gboolean is_perma);

349 GList *read_route_list(GList *rf_list, gboolean is_perma);

350 void destroy_route(connect_route *r);

351 void destroy_route_list(GList *list);

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_msg_list(GList *msg_list, guint flags);

426 gboolean deliver(message *msg);

428 /* fail_msg.c */

429 gboolean fail_msg(message *msg, gchar *template, GList *failed_rcpts, gchar *err_fmt, va_list args);

430 gboolean warn_msg(message *msg, gchar *template, GList *failed_rcpts, gchar *err_fmt, va_list args);

432 /* interface.c */

433 gboolean init_sockaddr(struct sockaddr_in *name, interface *iface);

434 int make_server_socket(interface *iface);

436 /* local.c */

437 gboolean append_file(message *msg, GList *hdr_list, gchar *user);

438 gboolean pipe_out(message *msg, GList *hdr_list, address *rcpt, gchar *cmd, guint flags);

440 /* log.c */

441 gchar *ext_strerror(int err);

442 gboolean logopen(void);

443 void logclose(void);

444 void vlogwrite(int pri, const char *fmt, va_list args);

445 void logwrite(int pri, const char *fmt, ...);

446 void debugf(const char *fmt, ...);

447 void vdebugf(const char *fmt, va_list args);

448 void maillog(const char *fmt, ...);

450 /* spool.c */

451 gboolean spool_read_data(message *msg);

452 message *msg_spool_read(gchar *uid);

453 gboolean spool_write(message *msg, gboolean do_writedata);

454 gboolean spool_lock(gchar *uid);

455 gboolean spool_unlock(gchar *uid);

456 gboolean spool_delete_all(message *msg);

458 /* queue.c */

459 GList *read_queue(void);

460 gboolean queue_run(void);

461 gboolean queue_run_online(void);

462 void queue_list(void);

463 gboolean queue_delete(gchar *uid);

465 /* online.c */

466 gchar *online_query();

468 /* permissions.c */

469 gboolean is_ingroup(uid_t uid, gid_t gid);

470 void set_euidgid(gint uid, gint gid, uid_t *old_uid, gid_t *old_gid);

471 void set_identity(uid_t old_uid, gchar *task_name);

473 /* rewrite.c */

474 gboolean set_address_header_domain(header *hdr, gchar *domain);

475 gboolean map_address_header(header *hdr, GList *table);

477 /* route.c */

478 msgout_perhost *create_msgout_perhost(gchar *host);

479 void destroy_msgout_perhost(msgout_perhost *mo_ph);

480 void rewrite_headers(msg_out *msgout, connect_route *route);

481 void split_rcpts(GList *rcpt_list, GList *localnets, GList **rl_local, GList **rl_localnet, GList **rl_others);

482 GList *local_rcpts(GList *rcpt_list);

483 GList *remote_rcpts(GList *rcpt_list);

484 gboolean route_strip_msgout(connect_route *route, msg_out *msgout);

485 msg_out *route_prepare_msgout(connect_route *route, msg_out *msgout);

486 GList *route_msgout_list(connect_route *route, GList *msgout_list);

487 gboolean route_sender_is_allowed(connect_route *route, address *ret_path);

488 void route_split_rcpts(connect_route *route, GList *rcpt_list, GList **p_rcpt_list, GList **p_non_rcpt_list);

490 /* tables.c */

491 table_pair *create_pair(gchar *key, gpointer value);

492 table_pair *create_pair_string(gchar *key, gpointer value);

493 table_pair *parse_table_pair(gchar *line, char delim);

494 gpointer *table_find_func(GList *table_list, gchar *key, int (*cmp_func) (const char *, const char *));

495 gpointer *table_find(GList *table_list, gchar *key);

496 gpointer *table_find_case(GList *table_list, gchar *key);

497 gpointer *table_find_fnmatch(GList *table_list, gchar *key);

498 GList *table_read(gchar *fname, gchar delim);

499 void destroy_table(GList *table);

501 /* timeival.c */

502 gint time_interval(gchar *str);

504 /* permissions.c */

505 gboolean is_privileged_user(uid_t uid);

507 /* other things */

509 #define foreach(list, node)\

510 for((node) = g_list_first(list);\

511 (node);\

512 (node) = g_list_next(node))

514 #ifdef ENABLE_DEBUG

515 #define DEBUG(level) if(level <= conf.debug_level)

516 #else

517 /* hopefully the compiler optmizes this away... */

518 #define DEBUG(level) if(0)

519 #endif

521 #define LOG_VERBOSE 0x100

523 #ifndef HAVE_GETLINE

524 #define getline(buf, size, file) getdelim(buf, size, '\n', file)

525 #endif

527 #ifndef HAVE_FDATASYNC

528 #define fdatasync(fd) fsync(fd)

529 #endif

531 #ifndef CONF_DIR

532 #define CONF_DIR "/etc/masqmail"

533 #endif

535 #define CONF_FILE CONF_DIR"/masqmail.conf"

537 #define PIDFILEDIR "/var/run/masqmail/"

539 #ifndef va_copy

540 #ifdef __va_copy

541 #define va_copy(ap1, ap2) __va_copy(ap1, ap2)

542 #else

543 #define va_copy(ap1, ap2) G_VA_COPY(ap1, ap2)

544 #endif

545 #endif

547 /* *BSD needs this: */

548 extern char **environ;