1 /** \file fetchmail.h header file for fetchmail */
5 * For license terms, see the file COPYING in this directory.
8 /* We need this for HAVE_STDARG_H, etc */
13 /* We need this for size_t */
14 #include <sys/types.h>
16 /* We need this for time_t */
17 #if TIME_WITH_SYS_TIME
18 # include <sys/time.h>
22 # include <sys/time.h>
28 #ifdef HAVE_SYS_SOCKET_H
29 #include <sys/socket.h>
31 #ifdef HAVE_NET_SOCKET_H
32 #include <net/socket.h>
37 /* Import Trio if needed */
38 #if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF)
39 # include "trio/trio.h"
42 /* We need this for strstr */
43 #if !defined(HAVE_STRSTR) && !defined(strstr)
44 char *strstr(const char *, const char *);
47 /* constants designating the various supported protocols */
57 #define SMTP_PORT "smtp"
58 #define SMTP_PORT_NUM 25
59 #define KPOP_PORT "kpop"
62 #define SIMAP_PORT 993
63 #define SPOP3_PORT 995
67 * We need to distinguish between mailbox and mailbag protocols.
68 * Under a mailbox protocol wwe're pulling mail for a speecific user.
69 * Under a mailbag protocol we're fetching mail for an entire domain.
71 #define MAILBOX_PROTOCOL(ctl) ((ctl)->server.protocol < P_ETRN)
73 /* authentication types */
74 #define A_ANY 0 /* use the first method that works */
75 #define A_PASSWORD 1 /* password authentication */
76 #define A_NTLM 2 /* Microsoft NTLM protocol */
77 #define A_CRAM_MD5 3 /* CRAM-MD5 shrouding (RFC2195) */
78 #define A_OTP 4 /* One-time password (RFC1508) */
79 #define A_KERBEROS_V4 5 /* authenticate w/ Kerberos V4 */
80 #define A_KERBEROS_V5 6 /* authenticate w/ Kerberos V5 */
81 #define A_GSSAPI 7 /* authenticate with GSSAPI */
82 #define A_SSH 8 /* authentication at session level */
83 #define A_MSN 9 /* same as NTLM with keyword MSN */
84 #define A_EXTERNAL 10 /* external authentication (client cert) */
86 /* some protocols or authentication types (KERBEROS, GSSAPI, SSH) don't
87 * require a password */
88 #define NO_PASSWORD(ctl) \
89 ((ctl)->server.authenticate == A_OTP \
90 || (ctl)->server.authenticate == A_KERBEROS_V4 \
91 || (ctl)->server.authenticate == A_KERBEROS_V5 \
92 || (ctl)->server.authenticate == A_GSSAPI \
93 || (ctl)->server.authenticate == A_SSH \
94 || (ctl)->server.authenticate == A_EXTERNAL \
95 || (ctl)->server.protocol == P_ETRN)
98 * Definitions for buffer sizes. We get little help on setting maxima
99 * from IMAP RFCs up to 2060, so these are mostly from POP3.
101 #define HOSTLEN 635 /* max hostname length (RFC1123) */
102 #define POPBUFSIZE 512 /* max length of response (RFC1939) */
103 #define IDLEN 128 /* max length of UID (RFC1939) */
105 /* per RFC1939 this should be 40, but Microsoft Exchange ignores that limit */
106 #define USERNAMELEN 128 /* max POP3 arg length */
108 /* clear a netBSD kernel parameter out of the way */
112 * The RFC822 limit on message line size is just 998. But
113 * make this *way* oversized; idiot DOS-world mailers that
114 * don't line-wrap properly often ship entire paragraphs as
117 #define MSGBUFSIZE 8192
119 #define NAMELEN 64 /* max username length */
120 #define PASSWORDLEN 64 /* max password length */
121 #define DIGESTLEN 33 /* length of MD5 digest */
123 /* exit code values */
124 /* NOTE THAT PS_SUCCESS MUST ALWAYS BE 0 - SOME PARTS OF THE CODE
125 * RELY ON THIS VALUE! */
126 #define PS_SUCCESS 0 /* successful receipt of messages */
127 #define PS_NOMAIL 1 /* no mail available */
128 #define PS_SOCKET 2 /* socket I/O woes */
129 #define PS_AUTHFAIL 3 /* user authorization failed */
130 #define PS_PROTOCOL 4 /* protocol violation */
131 #define PS_SYNTAX 5 /* command-line syntax error */
132 #define PS_IOERR 6 /* bad permissions on rc file */
133 #define PS_ERROR 7 /* protocol error */
134 #define PS_EXCLUDE 8 /* client-side exclusion error */
135 #define PS_LOCKBUSY 9 /* server responded lock busy */
136 #define PS_SMTP 10 /* SMTP error */
137 #define PS_DNS 11 /* fatal DNS error */
138 #define PS_BSMTP 12 /* output batch could not be opened */
139 #define PS_MAXFETCH 13 /* poll ended by fetch limit */
140 #define PS_SERVBUSY 14 /* server is busy */
141 /* leave space for more codes */
142 #define PS_UNDEFINED 23 /* something I hadn't thought of */
143 #define PS_TRANSIENT 24 /* transient failure (internal use) */
144 #define PS_REFUSED 25 /* mail refused (internal use) */
145 #define PS_RETAINED 26 /* message retained (internal use) */
146 #define PS_TRUNCATED 27 /* headers incomplete (internal use) */
147 #define PS_REPOLL 28 /* repoll immediately with changed parameters (internal use) */
148 #define PS_IDLETIMEOUT 29 /* timeout on imap IDLE (internal use) */
150 /* output noise level */
151 #define O_SILENT 0 /* mute, max squelch, etc. */
152 #define O_NORMAL 1 /* user-friendly */
153 #define O_VERBOSE 2 /* chatty */
154 #define O_DEBUG 3 /* prolix */
155 #define O_MONITOR O_VERBOSE
157 #define SIZETICKER 1024 /* print 1 dot per this many bytes */
160 * We #ifdef this and use flag rather than bool
161 * to avoid a type clash with curses.h
169 /* we need to use zero as a flag-uninitialized value */
173 /** run control data */
176 char *logfile; /** where to write log information */
177 char *idfile; /** where to store UID data */
178 char *pidfile; /** where to record the PID of daemon mode processes */
181 int poll_interval; /** poll interval in seconds (daemon mode, 0 == off) */
197 flag mark; /* UID-index information */
198 #define UID_UNSEEN 0 /* hasn't been seen */
199 #define UID_SEEN 1 /* seen, but not deleted */
200 #define UID_DELETED 2 /* this message has been marked deleted */
201 #define UID_EXPUNGED 3 /* this message has been expunged */
211 struct method /* describe methods for protocol state machine */
213 const char *name; /* protocol name */
214 const char *service; /* service port (unencrypted) */
215 const char *sslservice; /* service port (SSL) */
216 flag tagged; /* if true, generate & expect command tags */
217 flag delimited; /* if true, accept "." message delimiter */
218 int (*parse_response)(int, char *);
219 /* response_parsing function */
220 int (*getauth)(int, struct query *, char *);
221 /* authorization fetcher */
222 int (*getrange)(int, struct query *, const char *, int *, int *, int *);
223 /* get message range to fetch */
224 int (*getsizes)(int, int, int *);
225 /* get sizes of messages */
226 int (*getpartialsizes)(int, int, int, int *);
227 /* get sizes of subset of messages */
228 int (*is_old)(int, struct query *, int);
229 /* check for old message */
230 int (*fetch_headers)(int, struct query *, int, int *);
231 /* fetch header from a given message */
232 int (*fetch_body)(int, struct query *, int, int *);
233 /* fetch a given message */
234 int (*trail)(int, struct query *, const char *);
235 /* eat trailer of a message */
236 int (*delete_msg)(int, struct query *, int);
238 int (*mark_seen)(int, struct query *, int);
239 /* mark as seen method */
240 int (*end_mailbox_poll)(int, struct query *);
241 /* end-of-mailbox processing */
242 int (*logout_cmd)(int, struct query *);
244 flag retry; /* can getrange poll for new messages? */
247 struct hostdata /* shared among all user connections to given server */
250 char *pollname; /* poll label of host */
251 char *via; /* "true" server name if non-NULL */
252 struct idlist *akalist; /* server name first, then akas */
253 struct idlist *localdomains; /* list of pass-through domains */
254 int protocol; /* protocol type */
255 char *service; /* service name */
256 int interval; /* # cycles to skip between polls */
257 int authenticate; /* authentication mode to try */
258 int timeout; /* inactivity timout in seconds */
259 char *envelope; /* envelope address list header */
260 int envskip; /* skip to numbered envelope header */
261 char *qvirtual; /* prefix removed from local user id */
262 flag skip; /* suppress poll in implicit mode? */
263 flag dns; /* do DNS lookup on multidrop? */
264 flag uidl; /* use RFC1725 UIDLs? */
266 flag sdps; /* use Demon Internet SDPS *ENV */
267 #endif /* SDPS_ENABLE */
268 flag checkalias; /* resolve aliases by comparing IPs? */
269 flag tracepolls; /* if TRUE, add poll trace info to Received */
270 char *principal; /* Kerberos principal for mail service */
271 char *esmtp_name, *esmtp_password; /* ESMTP AUTH information */
273 #if defined(linux) || defined(__FreeBSD__)
281 struct interface_pair_s *interface_pair;
284 char *plugin,*plugout;
286 /* computed for internal use */
287 const struct method *base_protocol; /* relevant protocol method table */
288 int poll_count; /* count of polls so far */
289 char *queryname; /* name to attempt DNS lookup on */
290 char *truename; /* "true name" of server host */
291 struct sockaddr *trueaddr; /* IP address of truename */
292 size_t trueaddr_len; /* size of trueaddr data */
293 struct hostdata *lead_server; /* ptr to lead query for this server */
295 int workarounds; /* track which workarounds the user was warned about */
299 * bit flags to set in workarounds after the corresponding warning,
300 * which we assume to be server-specific, has been printed,
301 * so we don't spam our users in daemon mode.
303 #define WKA_TOP (1L << 0) /* Maillennium TOP -> RETR override warning */
307 /* mailserver connection controls */
308 struct hostdata server;
311 struct idlist *localnames; /* including calling user's name */
312 int wildcard; /* should unmatched names be passed through */
313 char *remotename; /* remote login name to use */
314 char *password; /* remote password to use */
315 struct idlist *mailboxes; /* list of mailboxes to check */
317 /* per-forwarding-target data */
318 struct idlist *smtphunt; /* list of SMTP hosts to try forwarding to */
319 struct idlist *domainlist; /* domainlist to fetch from */
320 char *smtpaddress; /* address to force in RCPT TO */
321 char *smtpname; /* full RCPT TO name, including domain */
322 struct idlist *antispam; /* list of listener's antispam response */
323 char *mda; /* local MDA to pass mail to */
324 char *bsmtp; /* BSMTP output file */
325 char listener; /* what's the listener's wire protocol? */
326 #define SMTP_MODE 'S'
327 #define LMTP_MODE 'L'
328 char *preconnect; /* pre-connection command to execute */
329 char *postconnect; /* post-connection command to execute */
331 /* per-user control flags */
332 flag keep; /* if TRUE, leave messages undeleted */
333 flag fetchall; /* if TRUE, fetch all (not just unseen) */
334 flag flush; /* if TRUE, delete messages already seen */
335 flag limitflush; /* if TRUE, delete oversized mails */
336 flag rewrite; /* if TRUE, canonicalize recipient addresses */
337 flag stripcr; /* if TRUE, strip CRs in text */
338 flag forcecr; /* if TRUE, force CRs before LFs in text */
339 flag pass8bits; /* if TRUE, ignore Content-Transfer-Encoding */
340 flag dropstatus; /* if TRUE, drop Status lines in mail */
341 flag dropdelivered; /* if TRUE, drop Delivered-To lines in mail */
342 flag mimedecode; /* if TRUE, decode MIME-armored messages */
343 flag idle; /* if TRUE, idle after each poll */
344 int limit; /* limit size of retrieved messages */
345 int warnings; /* size warning interval */
346 int fetchlimit; /* max # msgs to get in single poll */
347 int fetchsizelimit; /* max # msg sizes to get in a request */
348 int fastuidl; /* do binary search for new UIDLs? */
349 int fastuidlcount; /* internal count for frequency of binary search */
350 int batchlimit; /* max # msgs to pass in single SMTP session */
351 int expunge; /* max # msgs to pass between expunges */
352 flag use_ssl; /* use SSL encrypted session */
353 char *sslkey; /* optional SSL private key file */
354 char *sslcert; /* optional SSL certificate file */
355 char *sslproto; /** force transport protocol (ssl2|ssl3|ssl23|tls1) - if NULL,
356 use ssl23 for SSL and opportunistic tls1 for non-SSL connections. */
357 char *sslcertpath; /* Trusted certificate directory for checking the server cert */
358 flag sslcertck; /* Strictly check the server cert. */
359 char *sslfingerprint; /* Fingerprint to check against */
360 char *properties; /* passthrough properties for extensions */
362 /* internal use -- per-poll state */
363 flag active; /* should we actually poll this server? */
364 char *destaddr; /* destination host for this query */
365 int errcount; /* count transient errors in last pass */
366 int authfailcount; /* count of authorization failures */
367 int wehaveauthed; /* We've managed to logon at least once! */
368 int wehavesentauthnote; /* We've sent an authorization failure note */
369 int wedged; /* wedged by auth failures or timeouts? */
370 char *smtphost; /* actual SMTP host we connected to */
371 char smtphostmode; /* what's the actual SMTP host's wire protocol? */
372 int smtp_socket; /* socket descriptor for SMTP connection */
373 unsigned int uid; /* UID of user to deliver to */
374 struct idlist *skipped; /* messages skipped on the mail server */
375 struct idlist *oldsaved, *newsaved;
376 struct idlist **oldsavedend;
377 char lastdigest[DIGESTLEN]; /* last MD5 hash seen on this connection */
378 char *folder; /* folder currently being polled */
380 /* internal use -- per-message state */
381 int mimemsg; /* bitmask indicating MIME body-type */
382 char digest[DIGESTLEN]; /* md5 digest buffer */
384 /* internal use -- housekeeping */
385 struct query *next; /* next query control block in chain */
388 struct msgblk /* message header parsed for open_sink() */
390 char *headers; /* raw message headers */
391 struct idlist *recipients; /* addressees */
392 char return_path[HOSTLEN + USERNAMELEN + 4];
399 * Numeric option handling. Numeric option value of zero actually means
400 * it's unspecified. Value less than zero is zero. The reason for this
401 * screwy encoding is so we can zero out an option block in order to set the
402 * numeric flags in it to unspecified.
404 #define NUM_VALUE_IN(n) (((n) == 0) ? -1 : (n))
405 #define NUM_VALUE_OUT(n) (((n) < 0) ? 0 : (n))
406 #define NUM_NONZERO(n) ((n) > 0)
407 #define NUM_ZERO(n) ((n) < 0)
408 #define NUM_SPECIFIED(n) ((n) != 0)
410 #define MULTIDROP(ctl) (ctl->wildcard || \
411 ((ctl)->localnames && (ctl)->localnames->next))
414 * Note: tags are generated with an a%04d format from a 1-origin
415 * integer sequence number. Length 4 permits transaction numbers
416 * up to 9999, so we force rollover with % 10000. There's no special
417 * reason for this format other than to look like the exmples in the
420 #define TAGLEN 6 /* 'a' + 4 digits + NUL */
421 extern char tag[TAGLEN];
424 /* list of hosts assembled from run control file and command line */
425 extern struct query cmd_opts, *querylist;
427 /* what's returned by envquery */
428 extern void envquery(int, char **);
430 /* controls the detail level of status/progress messages written to stderr */
431 extern int outlevel; /* see the O_.* constants above */
432 extern int yydebug; /* enable parse debugging */
434 /* these get computed */
435 extern int batchcount; /* count of messages sent in current batch */
436 extern flag peek_capable; /* can we read msgs without setting seen? */
438 /* miscellaneous global controls */
439 extern struct runctl run; /* global controls for this run */
440 extern flag nodetach; /* if TRUE, don't detach daemon process */
441 extern flag quitmode; /* if --quit was set */
442 extern int quitind; /* optind after position of last --quit option */
443 extern flag check_only; /* if --check was set */
444 extern char *rcfile; /* path name of rc file */
445 extern int linelimit; /* limit # lines retrieved per site */
446 extern flag versioninfo; /* emit only version info */
447 extern char *user; /* name of invoking user */
448 extern char *home; /* home directory of invoking user */
449 extern char *fmhome; /* fetchmail home directory */
450 extern int pass; /* number of re-polling pass */
451 extern flag configdump; /* dump control blocks as Python dictionary */
452 extern char *fetchmailhost; /* either "localhost" or an FQDN */
453 extern int suppress_tags; /* suppress tags in tagged protocols? */
454 extern char shroud[PASSWORDLEN*2+3]; /* string to shroud in debug output */
456 extern char *sdps_envfrom;
457 extern char *sdps_envto;
458 #endif /* SDPS_ENABLE */
460 extern const char *iana_charset; /* IANA assigned charset name */
462 /* from ucs/norm_charmap.c */
463 const char *norm_charmap(const char *name);
465 /* prototypes for globally callable functions */
467 /* from /usr/include/sys/cdefs.h */
468 #if !defined __GNUC__ || __GNUC__ < 2
469 # define __attribute__(xyz) /* Ignore. */
472 /* error.c: Error reporting */
473 #if defined(HAVE_STDARG_H)
474 void report_init(int foreground);
475 void report (FILE *fp, const char *format, ...)
476 __attribute__ ((format (printf, 2, 3)))
478 void report_build (FILE *fp, const char *format, ...)
479 __attribute__ ((format (printf, 2, 3)))
481 void report_complete (FILE *fp, const char *format, ...)
482 __attribute__ ((format (printf, 2, 3)))
484 void report_at_line (FILE *fp, int, const char *, unsigned int, const char *, ...)
485 __attribute__ ((format (printf, 5, 6)))
489 void report_build ();
490 void report_complete ();
491 void report_at_line ();
494 /* driver.c -- main driver loop */
495 void set_timeout(int);
496 int is_idletimeout(void);
497 void resetidletimeout(void);
498 int do_protocol(struct query *, const struct method *);
500 /* transact.c: transaction support */
501 void init_transact(const struct method *);
502 int readheaders(int sock,
507 flag *suppress_readbody);
508 int readbody(int sock, struct query *ctl, flag forward, int len);
509 #if defined(HAVE_STDARG_H)
510 void gen_send(int sock, const char *, ... )
511 __attribute__ ((format (printf, 2, 3)))
513 int gen_recv(int sock, char *buf, int size);
514 int gen_transact(int sock, const char *, ... )
515 __attribute__ ((format (printf, 2, 3)))
522 extern struct msgblk msgblk;
524 /* use these to track what was happening when the nonresponse timer fired */
525 #define GENERAL_WAIT 0 /* unknown wait type */
526 #define OPEN_WAIT 1 /* waiting from mailserver open */
527 #define SERVER_WAIT 2 /* waiting for mailserver response */
528 #define LISTENER_WAIT 3 /* waiting for listener initialization */
529 #define FORWARDING_WAIT 4 /* waiting for listener response */
532 /* response hooks can use this to identify the query stage */
533 #define STAGE_GETAUTH 0
534 #define STAGE_GETRANGE 1
535 #define STAGE_GETSIZES 2
536 #define STAGE_FETCH 3
538 #define STAGE_LOGOUT 5
541 extern int mytimeout;
543 /* mark values for name lists */
544 #define XMIT_ACCEPT 1 /* accepted; matches local domain or name */
545 #define XMIT_REJECT 2 /* rejected; no match */
546 #define XMIT_RCPTBAD 3 /* SMTP listener rejected the name */
549 int interruptible_idle(int interval);
550 extern volatile int lastsig;
552 /* sink.c: forwarding */
553 void smtp_close(struct query *, int);
554 int smtp_open(struct query *);
555 char *rcpt_address(struct query *, const char *, int);
556 int stuffline(struct query *, char *);
557 int open_sink(struct query*, struct msgblk *, int*, int*);
558 void release_sink(struct query *);
559 int close_sink(struct query *, struct msgblk *, flag);
560 int open_warning_by_mail(struct query *);
561 #if defined(HAVE_STDARG_H)
562 void stuff_warning(const char *, struct query *, const char *, ... )
563 __attribute__ ((format (printf, 3, 4)))
566 void stuff_warning();
568 void close_warning_by_mail(struct query *, struct msgblk *);
570 /* rfc822.c: RFC822 header parsing */
571 char *reply_hack(char *, const char *, size_t *);
572 char *nxtaddr(const char *);
574 /* uid.c: UID support */
575 extern int dofastuidl;
577 void initialize_saved_lists(struct query *, const char *);
578 struct idlist *save_str(struct idlist **, const char *, flag);
579 void free_str_list(struct idlist **);
580 struct idlist *copy_str_list(struct idlist *idl);
581 void save_str_pair(struct idlist **, const char *, const char *);
582 void free_str_pair_list(struct idlist **);
583 int delete_str(struct idlist **, long);
584 struct idlist *str_in_list(struct idlist **, const char *, const flag);
585 int str_nr_in_list(struct idlist **, const char *);
586 int str_nr_last_in_list(struct idlist **, const char *);
587 void str_set_mark( struct idlist **, const char *, const flag);
588 int count_list( struct idlist **idl );
589 char *str_from_nr_list( struct idlist **idl, long number );
590 char *str_find(struct idlist **, long);
591 struct idlist *id_find(struct idlist **idl, long);
592 char *idpair_find(struct idlist **, const char *);
593 void append_str_list(struct idlist **, struct idlist **);
594 void expunge_uids(struct query *);
595 void uid_swap_lists(struct query *);
596 void uid_discard_new_list(struct query *ctl);
597 void uid_reset_num(struct query *ctl);
598 void write_saved_lists(struct query *, const char *);
601 int prc_parse_file(const char *, const flag);
602 int prc_filecheck(const char *, const flag);
605 void to64frombits(char *, const void *, int);
606 int from64tobits(void *, const char *, int maxlen);
609 /* Bit-mask returned by MimeBodyType */
610 #define MSG_IS_7BIT 0x01
611 #define MSG_IS_8BIT 0x02
612 #define MSG_NEEDS_DECODE 0x80
613 extern void UnMimeHeader(char *buf);
614 extern int MimeBodyType(char *hdrs, int WantDecode);
615 extern int UnMimeBodyline(char **buf, flag delimited, flag issoftline);
618 void interface_init(void);
619 void interface_parse(char *, struct hostdata *);
620 void interface_note_activity(struct hostdata *);
621 int interface_approve(struct hostdata *, flag domonitor);
624 #if defined(HAVE_VOIDPOINTER)
625 #define XMALLOCTYPE void
627 #define XMALLOCTYPE char
629 XMALLOCTYPE *xmalloc(size_t);
630 XMALLOCTYPE *xrealloc(/*@null@*/ XMALLOCTYPE *, size_t);
631 #define xfree(p) { if (p) { free(p); } (p) = 0; }
632 char *xstrdup(const char *);
634 /* protocol driver and methods */
635 int doPOP2 (struct query *);
636 int doPOP3 (struct query *);
637 int doIMAP (struct query *);
638 int doETRN (struct query *);
639 int doODMR (struct query *);
641 /* authentication functions */
642 int do_cram_md5(int sock, char *command, struct query *ctl, char *strip);
643 int do_rfc1731(int sock, char *command, char *truename);
644 int do_gssauth(int sock, char *command, char *service, char *hostname, char *username);
645 int do_otp(int sock, char *command, struct query *ctl);
649 /* these should be of size PATH_MAX */
650 extern char currentwd[1024], rcfiledir[1024];
652 struct query *hostalloc(struct query *);
653 int parsecmdline (int, char **, struct runctl *, struct query *);
654 char *prependdir (const char *, const char *);
655 char *MD5Digest (unsigned const char *);
656 void hmac_md5 (char *, size_t, char *, size_t, unsigned char *, size_t);
657 int POP3_auth_rpa(char *, char *, int socket);
658 typedef RETSIGTYPE (*SIGHANDLERTYPE) (int);
659 void deal_with_sigchld(void);
660 RETSIGTYPE null_signal_handler(int sig);
661 SIGHANDLERTYPE set_signal_handler(int sig, SIGHANDLERTYPE handler);
662 int daemonize(const char *);
663 char *fm_getpassword(char *);
664 void escapes(const char *, char *);
665 char *visbuf(const char *);
666 const char *showproto(int);
667 void dump_config(struct runctl *runp, struct query *querylist);
668 int is_host_alias(const char *, struct query *, struct addrinfo **);
670 extern struct addrinfo *ai0, *ai1;
672 /** Try to obtain fully qualified hostname of current host. Exit with
673 * PS_DNS if \a required is true and there is a DNS error. Exit with
674 * PS_DNS if gethostname() fails, independent of the value of \a
677 * - fully qualified hostname if \a required is non-zero.
678 * - unqualified or fully qualified hostname if \a required is zero (0).
680 char *host_fqdn(int required /** exit with PS_DNS if the name cannot be qualified */);
681 char *rfc822timestamp(void);
683 char *rfc2047e(const char*, const char *);
685 void yyerror(const char *);
689 void itimerthread(void*);
690 /* Have to include these first to avoid errors from redefining getcwd
691 and chdir. They're re-include protected in EMX, so it's okay, I
695 /* Redefine getcwd and chdir to get drive-letter support so we can
696 find all of our lock files and stuff. */
697 #define getcwd _getcwd2
698 #define chdir _chdir2
702 # if !defined(strerror) && !defined(HAVE_DECL_STRERROR) /* On some systems, strerror is a macro */
703 char *strerror (int);
705 #endif /* HAVE_STRERROR */
707 #define STRING_DISABLED (char *)-1
708 #define STRING_DUMMY ""
712 #define S_IXGRP 0000010
717 char *stpcpy(char *, const char*);
720 #ifdef FETCHMAIL_DEBUG
721 #define exit(e) do { \
723 out = fopen("/tmp/fetchmail.log", "a"); \
725 "Exiting fetchmail from file %s, line %d with status %d\n", \
726 __FILE__, __LINE__, e); \
730 #endif /* FETCHMAIL_DEBUG */
734 #else /* !__CYGWIN__ */
736 #endif /* __CYGWIN__ */
738 extern int mailserver_socket_temp;
739 extern char *program_name;
741 /* POSIX space characters,
742 * <tab>;<newline>;<vertical-tab>;<form-feed>;<carriage-return>;<space> */
743 #define POSIX_space "\t\n\v\f\r "
745 /* strlcpy/strlcat prototypes */
748 strlcat(char *dst, const char *src, size_t siz);
752 strlcpy(char *dst, const char *src, size_t siz);
755 /** Resolve the a TCP service name or a string containing only a decimal
756 * positive integer to a port number. Returns -1 for error. */
757 int servport(const char *service);
759 #ifndef HAVE_GETNAMEINFO
760 # define NI_NUMERICHOST 1
761 # define NI_NUMERICSERV 2
763 # define NI_NAMEREQD 8
767 int fm_getaddrinfo(const char *node, const char *serv, const struct addrinfo *hints, struct addrinfo **res);
768 void fm_freeaddrinfo(struct addrinfo *ai);
770 /* prototypes from tls.c */
771 int maybe_tls(struct query *ctl);
772 int must_tls(struct query *ctl);
775 /* fetchmail.h ends here */