1 /** \file fetchmail.h header file for fetchmail */
5 * For license terms, see the file COPYING in this directory.
12 /* We need this for size_t */
13 #include <sys/types.h>
15 /* We need this for time_t */
16 #if TIME_WITH_SYS_TIME
17 # include <sys/time.h>
21 # include <sys/time.h>
27 #ifdef HAVE_SYS_SOCKET_H
28 #include <sys/socket.h>
30 #ifdef HAVE_NET_SOCKET_H
31 #include <net/socket.h>
36 /* We need this for strstr */
37 #if !defined(HAVE_STRSTR) && !defined(strstr)
38 char *strstr(const char *, const char *);
43 /* constants designating the various supported protocols */
52 #define SMTP_PORT "smtp"
53 #define SMTP_PORT_NUM 25
54 #define KPOP_PORT "kpop"
57 #define SIMAP_PORT 993
58 #define SPOP3_PORT 995
62 * We need to distinguish between mailbox and mailbag protocols.
63 * Under a mailbox protocol wwe're pulling mail for a speecific user.
64 * Under a mailbag protocol we're fetching mail for an entire domain.
66 #define MAILBOX_PROTOCOL(ctl) ((ctl)->server.protocol < P_ETRN)
68 /* authentication types */
69 #define A_ANY 0 /* use the first method that works */
70 #define A_PASSWORD 1 /* password authentication */
71 #define A_NTLM 2 /* Microsoft NTLM protocol */
72 #define A_CRAM_MD5 3 /* CRAM-MD5 shrouding (RFC2195) */
73 #define A_OTP 4 /* One-time password (RFC1508) */
74 #define A_KERBEROS_V4 5 /* authenticate w/ Kerberos V4 */
75 #define A_KERBEROS_V5 6 /* authenticate w/ Kerberos V5 */
76 #define A_GSSAPI 7 /* authenticate with GSSAPI */
77 #define A_SSH 8 /* authentication at session level */
78 #define A_MSN 9 /* same as NTLM with keyword MSN */
79 #define A_EXTERNAL 10 /* external authentication (client cert) */
81 /* some protocols or authentication types (KERBEROS, GSSAPI, SSH) don't
82 * require a password */
83 #define NO_PASSWORD(ctl) \
84 ((ctl)->server.authenticate == A_OTP \
85 || (ctl)->server.authenticate == A_KERBEROS_V4 \
86 || (ctl)->server.authenticate == A_KERBEROS_V5 \
87 || (ctl)->server.authenticate == A_GSSAPI \
88 || (ctl)->server.authenticate == A_SSH \
89 || (ctl)->server.authenticate == A_EXTERNAL \
90 || (ctl)->server.protocol == P_ETRN)
93 * Definitions for buffer sizes. We get little help on setting maxima
94 * from IMAP RFCs up to 2060, so these are mostly from POP3.
96 #define HOSTLEN 635 /* max hostname length (RFC1123) */
97 #define POPBUFSIZE 512 /* max length of response (RFC1939) */
98 #define IDLEN 128 /* max length of UID (RFC1939) */
100 /* per RFC1939 this should be 40, but Microsoft Exchange ignores that limit */
101 #define USERNAMELEN 128 /* max POP3 arg length */
103 /* clear a netBSD kernel parameter out of the way */
107 * The RFC822 limit on message line size is just 998. But
108 * make this *way* oversized; idiot DOS-world mailers that
109 * don't line-wrap properly often ship entire paragraphs as
112 #define MSGBUFSIZE 8192
114 #define NAMELEN 64 /* max username length */
115 #define PASSWORDLEN 64 /* max password length */
116 #define DIGESTLEN 33 /* length of MD5 digest */
118 /* exit code values */
119 /* NOTE THAT PS_SUCCESS MUST ALWAYS BE 0 - SOME PARTS OF THE CODE
120 * RELY ON THIS VALUE! */
121 #define PS_SUCCESS 0 /* successful receipt of messages */
122 #define PS_NOMAIL 1 /* no mail available */
123 #define PS_SOCKET 2 /* socket I/O woes */
124 #define PS_AUTHFAIL 3 /* user authorization failed */
125 #define PS_PROTOCOL 4 /* protocol violation */
126 #define PS_SYNTAX 5 /* command-line syntax error */
127 #define PS_IOERR 6 /* bad permissions on rc file */
128 #define PS_ERROR 7 /* protocol error */
129 #define PS_EXCLUDE 8 /* client-side exclusion error */
130 #define PS_LOCKBUSY 9 /* server responded lock busy */
131 #define PS_SMTP 10 /* SMTP error */
132 #define PS_DNS 11 /* fatal DNS error */
133 #define PS_BSMTP 12 /* output batch could not be opened */
134 #define PS_MAXFETCH 13 /* poll ended by fetch limit */
135 #define PS_SERVBUSY 14 /* server is busy */
136 /* leave space for more codes */
137 #define PS_UNDEFINED 23 /* something I hadn't thought of */
138 #define PS_TRANSIENT 24 /* transient failure (internal use) */
139 #define PS_REFUSED 25 /* mail refused (internal use) */
140 #define PS_RETAINED 26 /* message retained (internal use) */
141 #define PS_REPOLL 28 /* repoll immediately with changed parameters (internal use) */
142 #define PS_IDLETIMEOUT 29 /* timeout on imap IDLE (internal use) */
143 #define PS_UNTAGGED 30 /* untagged response on imap command (internal use) */
145 /* output noise level */
146 #define O_SILENT 0 /* mute, max squelch, etc. */
147 #define O_NORMAL 1 /* user-friendly */
148 #define O_VERBOSE 2 /* chatty */
149 #define O_DEBUG 3 /* prolix */
150 #define O_MONITOR O_VERBOSE
152 #define SIZETICKER 1024 /* print 1 dot per this many bytes */
155 * We #ifdef this and use flag rather than bool
156 * to avoid a type clash with curses.h
164 /* we need to use zero as a flag-uninitialized value */
168 /** run control data */
171 char *logfile; /** where to write log information */
172 char *idfile; /** where to store UID data */
173 char *pidfile; /** where to record the PID of daemon mode processes */
174 const char *postmaster;
176 int poll_interval; /** poll interval in seconds (daemon mode, 0 == off) */
186 /** Dual-use entry of singly-linked list for storing id/status or id/id2
190 char *id; /**< key */
196 flag mark; /**< UID-index information */
198 status; /**< value for id/status pairs */
199 char *id2; /**< value for id/id2 pairs */
200 } val; /**< union to store value for key \a id */
201 struct idlist *next; /**< pointer to next list element */
204 /** List of possible values for idlist::mark */
206 UID_UNSEEN= 0, /**< id hasn't been seen */
207 UID_SEEN= 1, /**< id was seen, but not deleted */
208 UID_DELETED= 2, /**< this message has been marked deleted */
209 UID_EXPUNGED= 3 /**< this message has been expunged */
216 struct method /* describe methods for protocol state machine */
218 const char *name; /* protocol name */
219 const char *service; /* service port (unencrypted) */
220 const char *sslservice; /* service port (SSL) */
221 flag tagged; /* if true, generate & expect command tags */
222 flag delimited; /* if true, accept "." message delimiter */
223 int (*parse_response)(int, char *);
224 /* response_parsing function */
225 int (*getauth)(int, struct query *, char *);
226 /* authorization fetcher */
227 int (*getrange)(int, struct query *, const char *, int *, int *, int *);
228 /* get message range to fetch */
229 int (*getsizes)(int, int, int *);
230 /* get sizes of messages */
231 int (*getpartialsizes)(int, int, int, int *);
232 /* get sizes of subset of messages */
233 int (*is_old)(int, struct query *, int);
234 /* check for old message */
235 int (*fetch_headers)(int, struct query *, int, int *);
236 /* fetch header from a given message */
237 int (*fetch_body)(int, struct query *, int, int *);
238 /* fetch a given message */
239 int (*trail)(int, struct query *, const char *);
240 /* eat trailer of a message */
241 int (*delete_msg)(int, struct query *, int);
243 int (*mark_seen)(int, struct query *, int);
244 /* mark as seen method */
245 int (*end_mailbox_poll)(int, struct query *);
246 /* end-of-mailbox processing */
247 int (*logout_cmd)(int, struct query *);
249 flag retry; /* can getrange poll for new messages? */
252 enum badheader { BHREJECT = 0, BHACCEPT };
254 struct hostdata /* shared among all user connections to given server */
257 char *pollname; /* poll label of host */
258 char *via; /* "true" server name if non-NULL */
259 struct idlist *akalist; /* server name first, then akas */
260 struct idlist *localdomains; /* list of pass-through domains */
261 int protocol; /* protocol type */
262 const char *service; /* service name */
263 int interval; /* # cycles to skip between polls */
264 int authenticate; /* authentication mode to try */
265 int timeout; /* inactivity timout in seconds */
266 char *envelope; /* envelope address list header */
267 int envskip; /* skip to numbered envelope header */
268 char *qvirtual; /* prefix removed from local user id */
269 flag skip; /* suppress poll in implicit mode? */
270 flag dns; /* do DNS lookup on multidrop? */
271 flag uidl; /* use RFC1725 UIDLs? */
273 flag sdps; /* use Demon Internet SDPS *ENV */
274 #endif /* SDPS_ENABLE */
275 flag checkalias; /* resolve aliases by comparing IPs? */
276 flag tracepolls; /* if TRUE, add poll trace info to Received */
277 char *principal; /* Kerberos principal for mail service */
278 char *esmtp_name, *esmtp_password; /* ESMTP AUTH information */
279 enum badheader badheader; /* bad-header {pass|reject} */
281 #if defined(linux) || defined(__FreeBSD__)
289 struct interface_pair_s *interface_pair;
292 char *plugin,*plugout;
294 /* computed for internal use */
295 const struct method *base_protocol; /* relevant protocol method table */
296 int poll_count; /* count of polls so far */
297 char *queryname; /* name to attempt DNS lookup on */
298 char *truename; /* "true name" of server host */
299 struct sockaddr *trueaddr; /* IP address of truename */
300 size_t trueaddr_len; /* size of trueaddr data */
301 struct hostdata *lead_server; /* ptr to lead query for this server */
303 int workarounds; /* track which workarounds the user was warned about */
307 * bit flags to set in workarounds after the corresponding warning,
308 * which we assume to be server-specific, has been printed,
309 * so we don't spam our users in daemon mode.
311 #define WKA_TOP (1L << 0) /* Maillennium TOP -> RETR override warning */
315 /* mailserver connection controls */
316 struct hostdata server;
319 struct idlist *localnames; /* including calling user's name */
320 int wildcard; /* should unmatched names be passed through */
321 char *remotename; /* remote login name to use */
322 char *password; /* remote password to use */
323 struct idlist *mailboxes; /* list of mailboxes to check */
325 /* per-forwarding-target data */
326 struct idlist *smtphunt; /* list of SMTP hosts to try forwarding to */
327 struct idlist *domainlist; /* domainlist to fetch from */
328 char *smtpaddress; /* address to force in RCPT TO */
329 char *smtpname; /* full RCPT TO name, including domain */
330 struct idlist *antispam; /* list of listener's antispam response */
331 const char *mda; /* local MDA to pass mail to */
332 char *bsmtp; /* BSMTP output file */
333 char listener; /* what's the listener's wire protocol? */
334 #define SMTP_MODE 'S'
335 #define LMTP_MODE 'L'
336 char *preconnect; /* pre-connection command to execute */
337 char *postconnect; /* post-connection command to execute */
339 /* per-user control flags */
340 flag keep; /* if TRUE, leave messages undeleted */
341 flag fetchall; /* if TRUE, fetch all (not just unseen) */
342 flag flush; /* if TRUE, delete messages already seen */
343 flag limitflush; /* if TRUE, delete oversized mails */
344 flag rewrite; /* if TRUE, canonicalize recipient addresses */
345 flag stripcr; /* if TRUE, strip CRs in text */
346 flag forcecr; /* if TRUE, force CRs before LFs in text */
347 flag pass8bits; /* if TRUE, ignore Content-Transfer-Encoding */
348 flag dropstatus; /* if TRUE, drop Status lines in mail */
349 flag dropdelivered; /* if TRUE, drop Delivered-To lines in mail */
350 flag mimedecode; /* if TRUE, decode MIME-armored messages */
351 flag idle; /* if TRUE, idle after each poll */
352 int limit; /* limit size of retrieved messages */
353 int warnings; /* size warning interval */
354 int fetchlimit; /* max # msgs to get in single poll */
355 int fetchsizelimit; /* max # msg sizes to get in a request */
356 int fastuidl; /* do binary search for new UIDLs? */
357 int fastuidlcount; /* internal count for frequency of binary search */
358 int batchlimit; /* max # msgs to pass in single SMTP session */
359 int expunge; /* max # msgs to pass between expunges */
360 flag use_ssl; /* use SSL encrypted session */
361 char *sslkey; /* optional SSL private key file */
362 char *sslcert; /* optional SSL certificate file */
363 char *sslproto; /** force transport protocol (ssl2|ssl3|ssl23|tls1) - if NULL,
364 use ssl23 for SSL and opportunistic tls1 for non-SSL connections. */
365 char *sslcertfile; /* Trusted certificate file for checking the server cert */
366 char *sslcertpath; /* Trusted certificate directory for checking the server cert */
367 flag sslcertck; /* Strictly check the server cert. */
368 char *sslcommonname; /* CommonName to expect from server */
369 char *sslfingerprint; /* Fingerprint to check against */
370 char *properties; /* passthrough properties for extensions */
372 /* internal use -- per-poll state */
373 flag active; /* should we actually poll this server? */
374 char *destaddr; /* destination host for this query */
375 int errcount; /* count transient errors in last pass */
376 int authfailcount; /* count of authorization failures */
377 int wehaveauthed; /* We've managed to logon at least once! */
378 int wehavesentauthnote; /* We've sent an authorization failure note */
379 int wedged; /* wedged by auth failures or timeouts? */
380 char *smtphost; /* actual SMTP host we connected to */
381 char smtphostmode; /* what's the actual SMTP host's wire protocol? */
382 int smtp_socket; /* socket descriptor for SMTP connection */
383 unsigned int uid; /* UID of user to deliver to */
384 struct idlist *skipped; /* messages skipped on the mail server */
385 struct idlist *oldsaved, *newsaved;
386 struct idlist **oldsavedend;
387 char lastdigest[DIGESTLEN]; /* last MD5 hash seen on this connection */
388 char *folder; /* folder currently being polled */
390 /* internal use -- per-message state */
391 int mimemsg; /* bitmask indicating MIME body-type */
392 unsigned char digest[DIGESTLEN]; /* md5 digest buffer */
394 /* internal use -- housekeeping */
395 struct query *next; /* next query control block in chain */
398 struct msgblk /* message header parsed for open_sink() */
400 char *headers; /* raw message headers */
401 struct idlist *recipients; /* addressees */
402 char return_path[HOSTLEN + USERNAMELEN + 4];
409 * Numeric option handling. Numeric option value of zero actually means
410 * it's unspecified. Value less than zero is zero. The reason for this
411 * screwy encoding is so we can zero out an option block in order to set the
412 * numeric flags in it to unspecified.
414 #define NUM_VALUE_IN(n) (((n) == 0) ? -1 : (n))
415 #define NUM_VALUE_OUT(n) (((n) < 0) ? 0 : (n))
416 #define NUM_NONZERO(n) ((n) > 0)
417 #define NUM_ZERO(n) ((n) < 0)
418 #define NUM_SPECIFIED(n) ((n) != 0)
420 #define MULTIDROP(ctl) ((ctl)->wildcard || \
421 ((ctl)->localnames && (ctl)->localnames->next))
424 * Note: tags are generated with an a%04d format from a 1-origin
425 * integer sequence number. Length 4 permits transaction numbers
426 * up to 9999, so we force rollover with % 10000. There's no special
427 * reason for this format other than to look like the exmples in the
430 #define TAGLEN 6 /* 'a' + 4 digits + NUL */
431 extern char tag[TAGLEN];
434 /* list of hosts assembled from run control file and command line */
435 extern struct query cmd_opts, *querylist;
437 /* what's returned by envquery */
438 extern void envquery(int, char **);
440 /* controls the detail level of status/progress messages written to stderr */
441 extern int outlevel; /* see the O_.* constants above */
442 extern int yydebug; /* enable parse debugging */
444 /* these get computed */
445 extern int batchcount; /* count of messages sent in current batch */
446 extern flag peek_capable; /* can we read msgs without setting seen? */
448 /* miscellaneous global controls */
449 extern struct runctl run; /* global controls for this run */
450 extern flag nodetach; /* if TRUE, don't detach daemon process */
451 extern flag quitmode; /* if --quit was set */
452 extern int quitind; /* optind after position of last --quit option */
453 extern flag check_only; /* if --check was set */
454 extern char *rcfile; /* path name of rc file */
455 extern int linelimit; /* limit # lines retrieved per site */
456 extern flag versioninfo; /* emit only version info */
457 extern char *user; /* name of invoking user */
458 extern char *home; /* home directory of invoking user */
459 extern char *fmhome; /* fetchmail home directory */
460 extern int pass; /* number of re-polling pass */
461 extern flag configdump; /* dump control blocks as Python dictionary */
462 extern const char *fetchmailhost; /* either "localhost" or an FQDN */
463 extern int suppress_tags; /* suppress tags in tagged protocols? */
464 extern char shroud[PASSWORDLEN*2+3]; /* string to shroud in debug output */
466 extern char *sdps_envfrom;
467 extern char *sdps_envto;
468 #endif /* SDPS_ENABLE */
470 extern const char *iana_charset; /* IANA assigned charset name */
472 /* from/for ucs/norm_charmap.c */
473 #include "ucs/norm_charmap.h"
475 /* prototypes for globally callable functions */
477 /* from /usr/include/sys/cdefs.h */
478 #if !defined __GNUC__ || __GNUC__ < 2
479 # define __attribute__(xyz) /* Ignore. */
482 /* error.c: Error reporting */
483 void report_init(int foreground);
484 /** Flush partial message, suppress program name tag for next report printout. */
485 void report_flush(FILE *fp);
486 void report (FILE *fp, const char *format, ...)
487 __attribute__ ((format (printf, 2, 3)))
489 void report_build (FILE *fp, const char *format, ...)
490 __attribute__ ((format (printf, 2, 3)))
492 void report_complete (FILE *fp, const char *format, ...)
493 __attribute__ ((format (printf, 2, 3)))
495 void report_at_line (FILE *fp, int, const char *, unsigned int, const char *, ...)
496 __attribute__ ((format (printf, 5, 6)))
499 /* driver.c -- main driver loop */
500 void set_timeout(int);
501 int is_idletimeout(void);
502 void resetidletimeout(void);
503 int do_protocol(struct query *, const struct method *);
505 /* transact.c: transaction support */
506 void init_transact(const struct method *);
507 int readheaders(int sock,
512 flag *suppress_readbody);
513 int readbody(int sock, struct query *ctl, flag forward, int len);
514 void gen_send(int sock, const char *, ... )
515 __attribute__ ((format (printf, 2, 3)))
517 int gen_recv(int sock, char *buf, int size);
518 int gen_transact(int sock, const char *, ... )
519 __attribute__ ((format (printf, 2, 3)))
521 extern struct msgblk msgblk;
523 /* use these to track what was happening when the nonresponse timer fired */
524 #define GENERAL_WAIT 0 /* unknown wait type */
525 #define OPEN_WAIT 1 /* waiting from mailserver open */
526 #define SERVER_WAIT 2 /* waiting for mailserver response */
527 #define LISTENER_WAIT 3 /* waiting for listener initialization */
528 #define FORWARDING_WAIT 4 /* waiting for listener response */
531 /* response hooks can use this to identify the query stage */
532 #define STAGE_GETAUTH 0
533 #define STAGE_GETRANGE 1
534 #define STAGE_GETSIZES 2
535 #define STAGE_FETCH 3
537 #define STAGE_LOGOUT 5
540 extern int mytimeout;
542 /* mark values for name lists */
543 #define XMIT_ACCEPT 1 /* accepted; matches local domain or name */
544 #define XMIT_REJECT 2 /* rejected; no match */
545 #define XMIT_RCPTBAD 3 /* SMTP listener rejected the name */
548 int interruptible_idle(int interval);
549 extern volatile int lastsig;
551 /* sink.c: forwarding */
552 void smtp_close(struct query *, int);
553 int smtp_open(struct query *);
554 int smtp_setup(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 void stuff_warning(const char *, struct query *, const char *, ... )
562 __attribute__ ((format (printf, 3, 4)))
564 void close_warning_by_mail(struct query *, struct msgblk *);
566 /* rfc822.c: RFC822 header parsing */
567 char *reply_hack(char *, const char *, size_t *);
568 char *nxtaddr(const char *);
570 /* uid.c: UID support */
571 extern int dofastuidl;
572 void initialize_saved_lists(struct query *hostlist, const char *idfile);
573 void expunge_uids(struct query *ctl);
574 void uid_swap_lists(struct query *ctl);
575 void uid_discard_new_list(struct query *ctl);
576 void uid_reset_num(struct query *ctl);
577 void write_saved_lists(struct query *hostlist, const char *idfile);
580 struct idlist *save_str(struct idlist **idl, const char *str, flag status);
581 void free_str_list(struct idlist **idl);
582 void save_str_pair(struct idlist **idl, const char *str1, const char *str2);
583 struct idlist *str_in_list(struct idlist **idl, const char *str, const flag caseblind);
584 int str_nr_in_list(struct idlist **idl, const char *str);
585 int str_nr_last_in_list(struct idlist **idl, const char *str);
586 void str_set_mark(struct idlist **idl, const char *str, const flag val);
587 int count_list(struct idlist **idl);
588 char *str_from_nr_list(struct idlist **idl, long number);
589 char *str_find(struct idlist **idl, long number);
590 struct idlist *id_find(struct idlist **idl, long number);
591 char *idpair_find(struct idlist **idl, const char *id);
592 int delete_str(struct idlist **idl, long num);
593 struct idlist *copy_str_list(struct idlist *idl);
594 void append_str_list(struct idlist **idl, struct idlist **nidl);
597 int prc_parse_file(const char *, const flag);
598 int prc_filecheck(const char *, const flag);
601 void to64frombits(char *, const void *, int);
602 int from64tobits(void *, const char *, int maxlen);
605 /* Bit-mask returned by MimeBodyType */
606 #define MSG_IS_7BIT 0x01
607 #define MSG_IS_8BIT 0x02
608 #define MSG_NEEDS_DECODE 0x80
609 extern void UnMimeHeader(char *buf);
610 extern int MimeBodyType(char *hdrs, int WantDecode);
611 extern int UnMimeBodyline(char **buf, flag delimited, flag issoftline);
614 void interface_init(void);
615 void interface_parse(char *, struct hostdata *);
616 void interface_note_activity(struct hostdata *);
617 int interface_approve(struct hostdata *, flag domonitor);
621 /* protocol driver and methods */
622 int doPOP3 (struct query *);
623 int doIMAP (struct query *);
624 int doETRN (struct query *);
625 int doODMR (struct query *);
627 /* authentication functions */
628 int do_cram_md5(int sock, const char *command, struct query *ctl, const char *strip);
629 int do_rfc1731(int sock, const char *command, const char *truename);
630 int check_gss_creds(const char *service, const char *hostname);
631 int do_gssauth(int sock, const char *command, const char *service, const char *hostname, const char *username);
632 int do_otp(int sock, const char *command, struct query *ctl);
636 /* these should be of size PATH_MAX */
637 extern char currentwd[1024], rcfiledir[1024];
639 struct query *hostalloc(struct query *);
640 int parsecmdline (int, char **, struct runctl *, struct query *);
641 char *prependdir (const char *, const char *);
642 char *MD5Digest (unsigned const char *);
643 void hmac_md5 (const unsigned char *, size_t, const unsigned char *, size_t, unsigned char *, size_t);
644 int POP3_auth_rpa(char *, char *, int socket);
645 typedef RETSIGTYPE (*SIGHANDLERTYPE) (int);
646 void deal_with_sigchld(void);
647 RETSIGTYPE null_signal_handler(int sig);
648 SIGHANDLERTYPE set_signal_handler(int sig, SIGHANDLERTYPE handler);
649 int daemonize(const char *);
650 char *fm_getpassword(char *);
651 void escapes(const char *, char *);
652 char *visbuf(const char *);
653 const char *showproto(int);
654 void dump_config(struct runctl *runp, struct query *querylist);
655 int is_host_alias(const char *, struct query *, struct addrinfo **);
657 extern struct addrinfo *ai0, *ai1;
659 /** Try to obtain fully qualified hostname of current host. Exit with
660 * PS_DNS if \a required is true and there is a DNS error. Exit with
661 * PS_DNS if gethostname() fails, independent of the value of \a
664 * - fully qualified hostname if \a required is non-zero.
665 * - unqualified or fully qualified hostname if \a required is zero (0).
667 char *host_fqdn(int required /** exit with PS_DNS if the name cannot be qualified */);
668 char *rfc822timestamp(void);
670 char *rfc2047e(const char*, const char *);
672 void yyerror(const char *);
675 #define STRING_DISABLED (char *)-1
676 #define STRING_DUMMY ""
680 #define S_IXGRP 0000010
685 char *stpcpy(char *, const char*);
690 #else /* !__CYGWIN__ */
692 #endif /* __CYGWIN__ */
694 extern int mailserver_socket_temp;
695 extern const char *program_name;
697 /* POSIX space characters,
698 * <tab>;<newline>;<vertical-tab>;<form-feed>;<carriage-return>;<space> */
699 #define POSIX_space "\t\n\v\f\r "
701 /** Resolve the a TCP service name or a string containing only a decimal
702 * positive integer to a port number. Returns -1 for error. */
703 int servport(const char *service);
705 #ifndef HAVE_GETNAMEINFO
706 # define NI_NUMERICHOST 1
707 # define NI_NUMERICSERV 2
709 # define NI_NAMEREQD 8
713 int fm_getaddrinfo(const char *node, const char *serv, const struct addrinfo *hints, struct addrinfo **res);
714 void fm_freeaddrinfo(struct addrinfo *ai);
716 /* prototypes from tls.c */
717 int maybe_tls(struct query *ctl);
718 int must_tls(struct query *ctl);
720 /* prototype from rfc822valid.c */
721 int rfc822_valid_msgid(const unsigned char *);
723 /* prototype from x509_name_match.c */
724 int name_match(const char *p1, const char *p2);
726 /* prototype from ntlmsubr.c */
728 int ntlm_helper(int sock, struct query *ctl, const char *protocol);
731 /* macro to determine if we want to spam progress to stdout */
732 #define want_progress() \
733 ((outlevel >= O_VERBOSE || (outlevel > O_SILENT && run.showdots)) \
735 && (run.showdots || !is_a_file(1)))
738 /* fetchmail.h ends here */