masqmail: ea5f86e0a81c src/masqmail.h

masqmail

view src/masqmail.h @ 281:ea5f86e0a81c

modes are now enforced exclusive Other MTAs (exim, postfix) are more relaxing, but as combinations of exclusive modes are senseless we behave more obvious if we fail early. This makes understanding the behavior easier too.

author	markus schnalke <meillo@marmaro.de>
date	Tue, 07 Dec 2010 14:04:56 -0300
parents	82d168dd52fd
children	ca2d11aec2a3

line source

1 /* MasqMail

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 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 instant_helo;

103 gboolean do_pipelining;

104

105 gchar *set_h_from_domain;

106 gchar *set_h_reply_to_domain;

107 gchar *set_return_path_domain;

108

109 GList *map_h_from_addresses;

110 GList *map_h_reply_to_addresses;

111 GList *map_h_mail_followup_to_addresses;

112 GList *map_return_path_addresses;

113

114 gboolean expand_h_sender_domain;

115 gboolean expand_h_sender_address;

116

117 GList *resolve_list;

118

119 gchar *auth_name;

120 gchar *auth_login;

121 gchar *auth_secret;

122

123 gchar *pipe;

124

125 gboolean pipe_fromline;

126 gboolean pipe_fromhack;

127 } connect_route;

128

129 typedef struct _masqmail_conf {

130 gint mail_uid;

131 gint mail_gid;

132

133 gint orig_uid;

134 gint orig_gid;

135

136 gboolean run_as_user;

137

138 gchar *mail_dir;

139 gchar *lock_dir;

140 gchar *spool_dir;

141 gchar *log_dir;

142

143 gint debug_level;

144 gboolean use_syslog;

145 guint log_max_pri;

146

147 gchar *host_name;

148 GList *local_hosts;

149 GList *local_addresses;

150 GList *not_local_addresses;

151 GList *local_nets;

152 GList *listen_addresses;

153

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

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

156 gulong max_msg_size;

157

158 gboolean do_save_envelope_to;

159

160 gboolean defer_all;

161 gboolean do_relay;

162

163 GList *ident_trusted_nets;

164

165 gboolean do_queue;

166

167 gboolean do_verbose;

168

169 gchar *mbox_default;

170 GList *mbox_users;

171 GList *mda_users;

172

173 gchar *mda;

174 gboolean mda_fromline;

175 gboolean mda_fromhack;

176

177 gboolean pipe_fromline;

178 gboolean pipe_fromhack;

179

180 gchar *alias_file;

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

182

183 GList *local_net_routes;

184 GList *connect_routes; /* list of pairs which point to lists */

185

186 gchar *online_detect;

187 gchar *online_file;

188 gchar *online_pipe;

189

190 gchar *errmsg_file;

191 gchar *warnmsg_file;

192 GList *warn_intervals;

193 gint max_defer_time;

194

195 gchar *log_user;

196 } masqmail_conf;

197

198 extern masqmail_conf conf;

199

200 typedef struct _table_pair {

201 gchar *key;

202 gpointer *value;

203 } table_pair;

204

205

206 typedef enum _prot_id {

207 PROT_LOCAL = 0,

208 PROT_BSMTP,

209 PROT_SMTP,

210 PROT_ESMTP,

211 PROT_NUM

212 } prot_id;

213

214 extern gchar *prot_names[];

215

216 typedef enum _header_id {

217 HEAD_FROM = 0,

218 HEAD_SENDER,

219 HEAD_TO,

220 HEAD_CC,

221 HEAD_BCC,

222 HEAD_DATE,

223 HEAD_MESSAGE_ID,

224 HEAD_REPLY_TO,

225 HEAD_SUBJECT,

226 HEAD_RETURN_PATH,

227 HEAD_ENVELOPE_TO,

228 HEAD_RECEIVED,

229 HEAD_NUM_IDS,

230 HEAD_STATUS,

231 HEAD_UNKNOWN = HEAD_NUM_IDS,

232 HEAD_NONE = -1,

233 } header_id;

234

235 typedef struct _header_name {

236 gchar *header;

237 header_id id;

238 } header_name;

239

240 typedef struct _header {

241 header_id id;

242 gchar *header;

243 gchar *value;

244 } header;

245

246

247 typedef struct _message {

248 gchar *uid;

249

250 gchar *received_host;

251 prot_id received_prot;

252 gchar *ident;

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

254

255 address *return_path;

256 GList *rcpt_list;

257 GList *non_rcpt_list;

258

259 GList *hdr_list;

260 GList *data_list;

261

262 gint data_size;

263 time_t received_time;

264 time_t warned_time;

265

266 gchar *full_sender_name;

267 } message;

268

269 typedef struct _msg_out {

270 message *msg;

271

272 address *return_path;

273 GList *rcpt_list;

274

275 GList *hdr_list;

276 GList *xtra_hdr_list;

277 } msg_out;

278

279 typedef struct _msgout_perhost {

280 gchar *host;

281 GList *msgout_list;

282 } msgout_perhost;

283

284 /* flags for accept() */

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

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

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

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

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

290

291 #define DLVR_LOCAL 0x01

292 #define DLVR_LAN 0x02

293 #define DLVR_ONLINE 0x04

294 #define DLVR_ALL (DLVR_LOCAL|DLVR_LAN|DLVR_ONLINE)

295

296 /* transport flags */

297 #define MSGSTR_FROMLINE 0x01

298 #define MSGSTR_FROMHACK 0x02

299

300 typedef enum _accept_error {

301 AERR_OK = 0,

302 AERR_TIMEOUT,

303 AERR_EOF,

304 AERR_OVERFLOW,

305 AERR_SYNTAX,

306 AERR_NOSPOOL,

307 AERR_NORCPT,

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

309 AERR_UNKNOWN

310 } accept_error;

311

312 #define BUF_LEN 1024

313 #define MAX_ADDRESS 256

314 #define MAX_DATALINE 4096

315

316 typedef enum _smtp_cmd_id {

317 SMTP_HELO = 0,

318 SMTP_EHLO,

319 SMTP_MAIL_FROM,

320 SMTP_RCPT_TO,

321 SMTP_DATA,

322 SMTP_QUIT,

323 SMTP_RSET,

324 SMTP_NOOP,

325 SMTP_HELP,

326 SMTP_NUM_IDS,

327 SMTP_EOF = -1,

328 SMTP_ERROR = -2,

329 } smtp_cmd_id;

330

331 typedef struct _smtp_cmd {

332 smtp_cmd_id id;

333 gchar *cmd;

334 } smtp_cmd;

335

336 typedef struct _smtp_connection {

337 gchar *remote_host;

338

339 prot_id prot;

340 gint next_id;

341

342 gboolean helo_seen;

343 gboolean from_seen;

344 gboolean rcpt_seen;

345

346 message *msg;

347 } smtp_connection;

348

349 /* alias.c*/

350 gboolean addr_is_local(address * addr);

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

352

353 /* child.c */

354 int child(const char *command);

355

356 /* conf.c */

357 void init_conf();

358 gboolean read_conf(gchar * filename);

359 connect_route *read_route(gchar * filename, gboolean is_local_net);

360 GList *read_route_list(GList * rf_list, gboolean is_local_net);

361 void destroy_route(connect_route * r);

362 void destroy_route_list(GList * list);

363 connect_route *create_local_route();

364

365 /* expand.c */

366 GList *var_table_rcpt(GList * var_table, address * rcpt);

367 GList *var_table_msg(GList * var_table, message * msg);

368 GList *var_table_conf(GList * var_table);

369 gint expand(GList * var_list, gchar * format, gchar * result, gint result_len);

370

371 /* message.c */

372 message *create_message(void);

373 void destroy_message(message * msg);

374 void destroy_msg_list(GList * msg_list);

375 void msg_free_data(message * msg);

376 gint msg_calc_size(message * msg, gboolean is_smtp);

377

378 msg_out *create_msg_out(message * msg);

379 msg_out *clone_msg_out(msg_out * msgout_orig);

380 GList *create_msg_out_list(GList * msg_list);

381 void destroy_msg_out(msg_out * msgout);

382 void destroy_msg_out_list(GList * msgout_list);

383

384 /* address.c */

385 address *create_address(gchar * path, gboolean is_rfc821);

386 address *create_address_qualified(gchar * path, gboolean is_rfc821, gchar * domain);

387 address *create_address_pipe(gchar * path);

388 void destroy_address(address * addr);

389 address *copy_modify_address(const address * orig, gchar * l_part, gchar * dom);

390 #define copy_address(addr) copy_modify_address(addr, NULL, NULL)

391 gboolean addr_isequal(address * addr1, address * addr2, int (*cmpfunc) (const char*, const char*));

392 gboolean addr_isequal_parent(address * addr1, address * addr2, int (*cmpfunc) (const char*, const char*));

393 address *addr_find_ancestor(address * addr);

394 gboolean addr_is_delivered_children(address * addr);

395 gboolean addr_is_finished_children(address * addr);

396 gchar *addr_string(address * addr);

397 gint addr_match(address * addr1, address * addr2);

398

399 /* accept.c */

400 accept_error accept_message(FILE * in, message * msg, guint flags);

401 accept_error accept_message_prepare(message * msg, guint flags);

402

403 /* header.c */

404 gchar *rec_timestamp();

405 GList *find_header(GList * hdr_list, header_id id, gchar * hdr_str);

406 void header_unfold(header * hdr);

407 void header_fold(header * hdr);

408 header *create_header(header_id id, gchar * fmt, ...);

409 void destroy_header(header * hdr);

410 header *copy_header(header * hdr);

411 header *get_header(gchar * line);

412

413 /* smtp_in.c */

414 void smtp_in(FILE * in, FILE * out, gchar * remote_host, gchar * ident);

415

416 /* listen.c */

417 void listen_port(GList * addr_list, gint qival, char *argv[]);

418

419 /* parse.c */

420 gboolean split_address(const gchar * path, gchar ** local_part, gchar ** domain, gboolean is_rfc821);

421 gboolean parse_address_rfc822(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);

422 gboolean parse_address_rfc821(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);

423 address *_create_address(gchar * string, gchar ** end, gboolean is_rfc821);

424 address *create_address_rfc821(gchar * string, gchar ** end);

425 address *create_address_rfc822(gchar * string, gchar ** end);

426 GList *addr_list_append_rfc822(GList * addr_list, gchar * string, gchar * domain);

427

428 /* connect.c */

429 mxip_addr *connect_hostlist(int *psockfd, gchar * host, guint port, GList * addr_list);

430 mxip_addr *connect_resolvelist(int *psockfd, gchar * host, guint port, GList * res_funcs);

431

432 /* deliver.c */

433 void msg_rcptlist_local(GList * rcpt_list, GList **, GList **);

434 gboolean deliver_local(msg_out * msgout);