masqmail: 41958685480d src/masqmail.h

masqmail

view src/masqmail.h @ 366:41958685480d

Switched to `type *name' style Andrew Koenig's ``C Traps and Pitfalls'' (Ch.2.1) convinced me that it is best to go with the way C had been designed. The ``declaration reflects use'' concept conflicts with a ``type* name'' notation. Hence I switched.

author	markus schnalke <meillo@marmaro.de>
date	Thu, 22 Sep 2011 15:07:40 +0200
parents	f4ba4ed28848
children	b27f66555ba8

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 gboolean is_perma;

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;

103

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;

113

114 gchar *pipe;

115 gboolean pipe_fromline;

116 gboolean pipe_fromhack;

117 } connect_route;

118

119 typedef struct _masqmail_conf {

120 gint mail_uid;

121 gint mail_gid;

122

123 gint orig_uid;

124 gint orig_gid;

125

126 gboolean run_as_user;

127

128 gchar *mail_dir;

129 gchar *lock_dir;

130 gchar *spool_dir;

131 gchar *log_dir;

132

133 gint debug_level;

134 gboolean use_syslog;

135 guint log_max_pri;

136

137 gchar *host_name;

138 GList *local_hosts;

139 GList *local_addresses;

140 GList *not_local_addresses;

141 GList *listen_addresses;

142

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

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

145 gulong max_msg_size;

146

147 gboolean do_save_envelope_to;

148

149 gboolean defer_all;

150 gboolean do_relay;

151

152 GList *ident_trusted_nets;

153

154 gboolean do_queue;

155

156 gboolean do_verbose;

157

158 gchar *mbox_default;

159 GList *mbox_users;

160 GList *mda_users;

161

162 gchar *mda;

163 gboolean mda_fromline;

164 gboolean mda_fromhack;

165

166 gboolean pipe_fromline;

167 gboolean pipe_fromhack;

168

169 gchar *alias_file;

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

171

172 GList *perma_routes;

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

174

175 gchar *online_query;

176

177 gchar *errmsg_file;

178 gchar *warnmsg_file;

179 GList *warn_intervals;

180 gint max_defer_time;

181

182 gchar *log_user;

183 } masqmail_conf;

184

185 extern masqmail_conf conf;

186

187 typedef struct _table_pair {

188 gchar *key;

189 gpointer *value;

190 } table_pair;

191

192

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

194 typedef enum _prot_id {

195 PROT_LOCAL = 0,

196 PROT_SMTP,

197 PROT_ESMTP,

198 PROT_NUM

199 } prot_id;

200

201 extern gchar *prot_names[];

202

203 typedef enum _header_id {

204 HEAD_FROM = 0,

205 HEAD_SENDER,

206 HEAD_TO,

207 HEAD_CC,

208 HEAD_BCC,

209 HEAD_DATE,

210 HEAD_MESSAGE_ID,

211 HEAD_REPLY_TO,

212 HEAD_SUBJECT,

213 HEAD_RETURN_PATH,

214 HEAD_ENVELOPE_TO,

215 HEAD_RECEIVED,

216 HEAD_NUM_IDS,

217 HEAD_STATUS,

218 HEAD_UNKNOWN = HEAD_NUM_IDS,

219 HEAD_NONE = -1,

220 } header_id;

221

222 typedef struct _header_name {

223 gchar *header;

224 header_id id;

225 } header_name;

226

227 typedef struct _header {

228 header_id id;

229 gchar *header;

230 gchar *value;

231 } header;

232

233

234 typedef struct _message {

235 gchar *uid;

236

237 gchar *received_host;

238 prot_id received_prot;

239 gchar *ident;

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

241

242 address *return_path;

243 GList *rcpt_list;

244 GList *non_rcpt_list;

245

246 GList *hdr_list;

247 GList *data_list;

248

249 gint data_size;

250 time_t received_time;

251 time_t warned_time;

252

253 gchar *full_sender_name;

254 } message;

255

256 typedef struct _msg_out {

257 message *msg;

258

259 address *return_path;

260 GList *rcpt_list;

261

262 GList *hdr_list;

263 GList *xtra_hdr_list; /* rewritten headers */

264 } msg_out;

265

266 typedef struct _msgout_perhost {

267 gchar *host;

268 GList *msgout_list;

269 } msgout_perhost;

270

271 /* flags for accept() */

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

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

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

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

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

277

278 #define DLVR_LOCAL 0x01

279 #define DLVR_ONLINE 0x02

280 #define DLVR_ALL (DLVR_LOCAL|DLVR_ONLINE)

281

282 /* transport flags */

283 #define MSGSTR_FROMLINE 0x01

284 #define MSGSTR_FROMHACK 0x02

285

286 typedef enum _accept_error {

287 AERR_OK = 0,

288 AERR_TIMEOUT,

289 AERR_EOF,

290 AERR_OVERFLOW,

291 AERR_SYNTAX,

292 AERR_NOSPOOL,

293 AERR_NORCPT,

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

295 AERR_UNKNOWN

296 } accept_error;

297

298 #define BUF_LEN 1024

299 #define MAX_ADDRESS 256

300 #define MAX_DATALINE 4096

301

302 typedef enum _smtp_cmd_id {

303 SMTP_HELO = 0,

304 SMTP_EHLO,

305 SMTP_MAIL_FROM,

306 SMTP_RCPT_TO,

307 SMTP_DATA,

308 SMTP_QUIT,

309 SMTP_RSET,

310 SMTP_NOOP,

311 SMTP_HELP,

312 SMTP_NUM_IDS,

313 SMTP_EOF = -1,

314 SMTP_ERROR = -2,

315 } smtp_cmd_id;

316

317 typedef struct _smtp_cmd {

318 smtp_cmd_id id;

319 gchar *cmd;

320 } smtp_cmd;

321

322 typedef struct _smtp_connection {

323 gchar *remote_host;

324

325 prot_id prot;

326 gint next_id;

327

328 gboolean helo_seen;

329 gboolean from_seen;

330 gboolean rcpt_seen;

331

332 message *msg;

333 } smtp_connection;

334

335 /* alias.c*/

336 gboolean addr_is_local(address *addr);

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

338

339 /* child.c */

340 int child(const char *command);

341

342 /* conf.c */

343 void init_conf();

344 gboolean read_conf(gchar *filename);

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

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

347 void destroy_route(connect_route *r);

348 void destroy_route_list(GList *list);

349

350 /* expand.c */

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

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

353 GList *var_table_conf(GList *var_table);

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

355

356 /* message.c */

357 message *create_message(void);

358 void destroy_message(message *msg);

359 void destroy_msg_list(GList *msg_list);

360 void msg_free_data(message *msg);

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

362

363 msg_out *create_msg_out(message *msg);

364 msg_out *clone_msg_out(msg_out *msgout_orig);

365 void destroy_msg_out(msg_out *msgout);

366 void destroy_msg_out_list(GList *msgout_list);

367

368 /* address.c */

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

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

371 address *create_address_pipe(gchar *path);

372 void destroy_address(address *addr);

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

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

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

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

377 address *addr_find_ancestor(address *addr);

378 gboolean addr_is_delivered_children(address *addr);

379 gboolean addr_is_finished_children(address *addr);

380 gchar *addr_string(address *addr);

381

382 /* accept.c */

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

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

385

386 /* header.c */

387 gchar *rec_timestamp();

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

389 void header_unfold(header *hdr);

390 void header_fold(header *hdr, unsigned int maxlen);

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

392 void destroy_header(header *hdr);

393 header *copy_header(header *hdr);

394 header *get_header(gchar *line);

395

396 /* smtp_in.c */

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

398

399 /* listen.c */

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

401

402 /* parse.c */

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

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

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

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

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

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

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

410

411 /* connect.c */

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

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

414

415 /* deliver.c */

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

417 gboolean deliver_local(msg_out *msgout);