2 * For license terms, see the file COPYING in this directory.
5 /* constants designating the various supported protocols */
17 #define KPOP_PORT "kpop"
19 #define KPOP_PORT 1109
22 /* preauthentication types */
23 #define A_PASSWORD 0 /* password or inline authentication */
24 #define A_KERBEROS_V4 1 /* preauthenticate w/ Kerberos V4 */
25 #define A_KERBEROS_V5 2 /* preauthenticate w/ Kerberos V5 */
28 * Definitions for buffer sizes. We get little help on setting maxima
29 * from IMAP RFCs up to 2060, so these are mostly from POP3.
31 #define HOSTLEN 635 /* max hostname length (RFC1123) */
32 #define POPBUFSIZE 512 /* max length of response (RFC1939) */
33 #define IDLEN 128 /* max length of UID (RFC1939) */
35 /* per RFC1939 this should be 40, but Microsoft Exchange ignores that limit */
36 #define USERNAMELEN 128 /* max POP3 arg length */
38 /* clear a netBSD kernel parameter out of the way */
42 * The RFC822 limit on message line size is just 998. But
43 * make this *way* oversized; idiot DOS-world mailers that
44 * don't line-wrap properly often ship entire paragraphs as
47 #define MSGBUFSIZE 8192
49 #define PASSWORDLEN 64 /* max password length */
50 #define DIGESTLEN 33 /* length of MD5 digest */
52 /* exit code values */
53 #define PS_SUCCESS 0 /* successful receipt of messages */
54 #define PS_NOMAIL 1 /* no mail available */
55 #define PS_SOCKET 2 /* socket I/O woes */
56 #define PS_AUTHFAIL 3 /* user authorization failed */
57 #define PS_PROTOCOL 4 /* protocol violation */
58 #define PS_SYNTAX 5 /* command-line syntax error */
59 #define PS_IOERR 6 /* bad permissions on rc file */
60 #define PS_ERROR 7 /* protocol error */
61 #define PS_EXCLUDE 8 /* client-side exclusion error */
62 #define PS_LOCKBUSY 9 /* server responded lock busy */
63 #define PS_SMTP 10 /* SMTP error */
64 #define PS_DNS 11 /* fatal DNS error */
65 #define PS_UNDEFINED 12 /* something I hadn't thought of */
66 #define PS_TRANSIENT 13 /* transient failure (internal use) */
67 #define PS_REFUSED 14 /* mail refused (internal use) */
68 #define PS_RETAINED 15 /* message retained (internal use) */
69 #define PS_TRUNCATED 16 /* headers incomplete (internal use) */
71 /* output noise level */
72 #define O_SILENT 0 /* mute, max squelch, etc. */
73 #define O_NORMAL 1 /* user-friendly */
74 #define O_VERBOSE 2 /* chatty */
75 #define O_DEBUG 3 /* prolix */
76 #define O_MONITOR O_VERBOSE
78 #define SIZETICKER 1024 /* print 1 dot per this many bytes */
81 * We #ifdef this and use flag rather than bool
82 * to avoid a type clash with curses.h
90 /* we need to use zero as a flag-uninitialized value */
112 flag mark; /* UID-index information */
113 #define UID_UNSEEN 0 /* hasn't been seen */
114 #define UID_SEEN 1 /* seen, but not deleted */
115 #define UID_DELETED 2 /* this message has been deleted */
116 #define UID_EXPUNGED 3 /* this message has been expunged */
124 struct method /* describe methods for protocol state machine */
126 char *name; /* protocol name */
130 int port; /* service port */
132 flag tagged; /* if true, generate & expect command tags */
133 flag delimited; /* if true, accept "." message delimiter */
134 int (*parse_response)(); /* response_parsing function */
135 int (*password_canonify)(); /* canonicalize password */
136 int (*getauth)(); /* authorization fetcher */
137 int (*getrange)(); /* get message range to fetch */
138 int (*getsizes)(); /* get sizes of messages */
139 int (*is_old)(); /* check for old message */
140 int (*fetch_headers)(); /* fetch FROM headera given message */
141 int (*fetch_body)(); /* fetch a given message */
142 int (*trail)(); /* eat trailer of a message */
143 int (*delete)(); /* delete method */
144 int (*logout_cmd)(); /* logout command */
145 flag retry; /* can getrange poll for new messages? */
148 struct hostdata /* shared among all user connections to given server */
151 char *pollname; /* poll label of host */
152 char *via; /* "true" server name if non-NULL */
153 struct idlist *akalist; /* server name first, then akas */
154 struct idlist *localdomains; /* list of pass-through domains */
155 int protocol; /* protocol type */
157 char *service; /* IPv6 service name */
158 void *netsec; /* IPv6 security request */
160 int port; /* TCP/IP service port number */
162 int interval; /* # cycles to skip between polls */
163 int preauthenticate; /* preauthentication mode to try */
164 int timeout; /* inactivity timout in seconds */
165 char *envelope; /* envelope address list header */
166 int envskip; /* skip to numbered envelope header */
167 char *qvirtual; /* prefix removed from local user id */
168 flag skip; /* suppress poll in implicit mode? */
169 flag dns; /* do DNS lookup on multidrop? */
170 flag uidl; /* use RFC1725 UIDLs? */
172 flag sdps; /* use Demon Internet SDPS *ENV */
173 #endif /* SDPS_ENABLE */
174 flag checkalias; /* resolve aliases by comparing IPs? */
181 struct interface_pair_s *interface_pair;
184 /* computed for internal use */
185 struct method *base_protocol; /* relevant protocol method table */
186 int poll_count; /* count of polls so far */
187 char *queryname; /* name to attempt DNS lookup on */
188 char *truename; /* "true name" of server host */
189 struct hostdata *lead_server; /* ptr to lead query for this server */
195 /* mailserver connection controls */
196 struct hostdata server;
199 struct idlist *localnames; /* including calling user's name */
200 int wildcard; /* should unmatched names be passed through */
201 char *remotename; /* remote login name to use */
202 char *password; /* remote password to use */
203 struct idlist *mailboxes; /* list of mailboxes to check */
204 struct idlist *smtphunt; /* list of SMTP hosts to try forwarding to */
205 char *smtphost; /* actual SMTP host to point to */
206 char *smtpaddress; /* address we want to force in the delivery messages */
207 struct idlist *antispam; /* list of listener's antispam response */
208 char *mda; /* local MDA to pass mail to */
209 char *preconnect; /* pre-connection command to execute */
210 char *postconnect; /* post-connection command to execute */
212 /* per-user control flags */
213 flag keep; /* if TRUE, leave messages undeleted */
214 flag fetchall; /* if TRUE, fetch all (not just unseen) */
215 flag flush; /* if TRUE, delete messages already seen */
216 flag rewrite; /* if TRUE, canonicalize recipient addresses */
217 flag stripcr; /* if TRUE, strip CRs in text */
218 flag forcecr; /* if TRUE, force CRs before LFs in text */
219 flag pass8bits; /* if TRUE, ignore Content-Transfer-Encoding */
220 flag dropstatus; /* if TRUE, drop Status lines in mail */
221 flag mimedecode; /* if TRUE, decode MIME-coded headers/coded printable*/
222 int limit; /* limit size of retrieved messages */
223 int warnings; /* size warning interval */
224 int fetchlimit; /* max # msgs to get in single poll */
225 int batchlimit; /* max # msgs to pass in single SMTP session */
226 int expunge; /* max # msgs to pass between expunges */
227 char *properties; /* passthrough properties for extensions */
229 struct idlist *oldsaved, *newsaved;
231 /* internal use -- per-poll state */
232 flag active; /* should we actually poll this server? */
233 char *destaddr; /* destination host for this query */
234 int errcount; /* count transient errors in last pass */
235 int smtp_socket; /* socket descriptor for SMTP connection */
236 unsigned int uid; /* UID of user to deliver to */
237 struct idlist *skipped; /* messages skipped on the mail server */
239 /* internal use -- per-message state */
240 int mimemsg; /* bitmask indicating MIME body-type */
241 char digest [DIGESTLEN]; /* md5 digest buffer */
243 /* internal use -- housekeeping */
244 struct query *next; /* next query control block in chain */
248 * Numeric option handling. Numeric option value of zero actually means
249 * it's unspecified. Value less than zero is zero.
251 #define NUM_VALUE(n) (((n) == 0) ? -1 : (n))
252 #define NUM_NONZERO(n) ((n) > 0)
253 #define NUM_ZERO(n) ((n) < 0)
254 #define NUM_SPECIFIED(n) ((n) != 0)
256 #define MULTIDROP(ctl) (ctl->wildcard || \
257 ((ctl)->localnames && (ctl)->localnames->next))
260 * Note: tags are generated with an a%04d format from a 1-origin
261 * integer sequence number. Length 4 permits transaction numbers
262 * up to 9999, so we force rollover with % 10000. There's no special
263 * reason for this format other than to look like the exmples in the
266 #define TAGLEN 6 /* 'a' + 4 digits + NUL */
267 extern char tag[TAGLEN];
270 /* list of hosts assembled from run control file and command line */
271 extern struct query cmd_opts, *querylist;
273 /* what's returned by envquery */
274 extern void envquery(int, char **);
276 /* controls the detail level of status/progress messages written to stderr */
277 extern int outlevel; /* see the O_.* constants above */
278 extern int yydebug; /* enable parse debugging */
280 /* these get computed */
281 extern int batchcount; /* count of messages sent in current batch */
282 extern flag peek_capable; /* can we read msgs without setting seen? */
284 /* miscellaneous global controls */
285 extern struct runctl run; /* global controls for this run */
286 extern flag nodetach; /* if TRUE, don't detach daemon process */
287 extern flag quitmode; /* if --quit was set */
288 extern flag check_only; /* if --check was set */
289 extern char *rcfile; /* path name of rc file */
290 extern int linelimit; /* limit # lines retrieved per site */
291 extern flag versioninfo; /* emit only version info */
292 extern char *user; /* name of invoking user */
293 extern char *home; /* home directory of invoking user */
294 extern int pass; /* number of re-polling pass */
295 extern flag configdump; /* dump control blocks as Python dictionary */
296 extern char *fetchmailhost; /* either "localhost" or an FQDN */
298 /* prototypes for globally callable functions */
300 /* error.c: Error reporting */
301 #if defined(HAVE_STDARG_H)
302 void error_init(int foreground);
303 void error (int status, int errnum, const char *format, ...);
304 void error_build (const char *format, ...);
305 void error_complete (int status, int errnum, const char *format, ...);
306 void error_at_line (int, int, const char *, unsigned int, const char *, ...);
310 void error_complete ();
311 void error_at_line ();
314 /* driver.c: transaction support */
315 void set_timeout(int);
316 #if defined(HAVE_STDARG_H)
317 void gen_send (int sock, const char *, ... );
318 int gen_recv(int sock, char *buf, int size);
319 int gen_transact (int sock, char *, ... );
326 /* use these to track what was happening when the nonresponse timer fired */
327 #define GENERAL_WAIT 0 /* unknown wait type */
328 #define OPEN_WAIT 1 /* waiting from mailserver open */
329 #define SERVER_WAIT 2 /* waiting for mailserver response */
330 #define LISTENER_WAIT 3 /* waiting for listener initialization */
331 #define FORWARDING_WAIT 4 /* waiting for listener response */
334 /* mark values for name lists */
335 #define XMIT_ACCEPT 1
336 #define XMIT_REJECT 2
337 #define XMIT_ANTISPAM 3
339 /* sink.c: forwarding */
340 int stuffline(struct query *, char *);
341 int open_sink(struct query*, char*, struct idlist*, long reallen, int*, int*);
342 void release_sink(struct query *);
343 int close_sink(struct query *, flag);
345 /* rfc822.c: RFC822 header parsing */
346 char *reply_hack(char *, const char *);
347 char *nxtaddr(const char *);
349 /* uid.c: UID support */
350 void initialize_saved_lists(struct query *, const char *);
351 struct idlist *save_str(struct idlist **, const char *, flag);
352 void free_str_list(struct idlist **);
353 void save_str_pair(struct idlist **, const char *, const char *);
354 void free_str_pair_list(struct idlist **);
355 int delete_str(struct idlist **, int);
356 int str_in_list(struct idlist **, const char *, const flag);
357 int str_nr_in_list(struct idlist **, const char *);
358 int str_nr_last_in_list(struct idlist **, const char *);
359 void str_set_mark( struct idlist **, const char *, const flag);
360 int count_list( struct idlist **idl );
361 char *str_from_nr_list( struct idlist **idl, int number );
362 char *str_find(struct idlist **, int);
363 char *idpair_find(struct idlist **, const char *);
364 void append_str_list(struct idlist **, struct idlist **);
365 void expunge_uids(struct query *);
366 void update_str_lists(struct query *);
367 void write_saved_lists(struct query *, const char *);
370 int prc_parse_file(const char *, const flag);
371 int prc_filecheck(const char *, const flag);
374 void to64frombits(unsigned char *, const unsigned char *, int);
375 int from64tobits(char *, const char *);
378 /* Bit-mask returned by MimeBodyType */
379 #define MSG_IS_7BIT 0x01
380 #define MSG_IS_8BIT 0x02
381 #define MSG_NEEDS_DECODE 0x80
382 extern void UnMimeHeader(unsigned char *buf);
383 extern int MimeBodyType(unsigned char *hdrs, int WantDecode);
384 extern int UnMimeBodyline(unsigned char **buf, int collapsedoubledot);
387 void interface_parse(char *, struct hostdata *);
388 void interface_note_activity(struct hostdata *);
389 int interface_approve(struct hostdata *);
392 #if defined(HAVE_VOIDPOINTER)
393 #define XMALLOCTYPE void
395 #define XMALLOCTYPE char
397 XMALLOCTYPE *xmalloc(int);
398 XMALLOCTYPE *xrealloc(XMALLOCTYPE *, int);
399 char *xstrdup(const char *);
400 #if defined(HAVE_ALLOCA_H)
407 #define xalloca(ptr, t, n) if (!(ptr = (t) alloca(n))) error(PS_UNDEFINED, 0, "alloca failed")
409 /* protocol driver and methods */
410 int do_protocol(struct query *, const struct method *);
411 int doPOP2 (struct query *);
412 int doPOP3 (struct query *);
413 int doIMAP (struct query *);
414 int doETRN (struct query *);
417 struct query *hostalloc(struct query *);
418 int parsecmdline (int, char **, struct runctl *, struct query *);
419 char *MD5Digest (unsigned char *);
420 int POP3_auth_rpa(unsigned char *, unsigned char *, int socket);
421 int daemonize(const char *, void (*)(int));
422 char *getpassword(char *);
423 void escapes(const char *, char *);
424 char *visbuf(const char *);
425 char *showproto(int);
426 void dump_config(struct runctl *runp, struct query *querylist);
427 int is_host_alias(const char *, struct query *);
428 char *host_fqdn(void);
431 #endif /* SDPS_ENABLE */
433 void yyerror(const char *);
437 void itimerthread(void*);
438 /* Have to include these first to avoid errors from redefining getcwd
439 and chdir. They're re-include protected in EMX, so it's okay, I
443 /* Redefine getcwd and chdir to get drive-letter support so we can
444 find all of our lock files and stuff. */
445 #define getcwd _getcwd2
446 #define chdir _chdir2
449 #define STRING_DISABLED (char *)-1
450 #define STRING_DUMMY ""
452 /* fetchmail.h ends here */