2 * Copyright notice from original mutt:
3 * Copyright (C) 1996-8 Michael R. Elkins <me@mutt.org>
4 * Copyright (C) 1996-9 Brandon Long <blong@fiction.net>
5 * Copyright (C) 1999-2002 Brendan Cully <brendan@kublai.com>
7 * This file is part of mutt-ng, see http://www.muttng.org/.
8 * It's licensed under the GNU General Public License,
9 * please see the file GPL in the top level source directory.
12 /* general IMAP utility functions */
17 #include "mx.h" /* for M_IMAP */
19 #include "imap_private.h"
24 #include "lib/debug.h"
29 #include <sys/types.h>
33 #include <netinet/in.h>
37 /* -- public functions -- */
39 /* imap_expand_path: IMAP implementation of mutt_expand_path. Rewrite
40 * an IMAP path in canonical and absolute form.
41 * Inputs: a buffer containing an IMAP path, and the number of bytes in
43 * Outputs: The buffer is rewritten in place with the canonical IMAP path.
44 * Returns 0 on success, or -1 if imap_parse_path chokes or url_ciss_tostring
45 * fails, which it might if there isn't enough room in the buffer. */
46 int imap_expand_path (char *path, size_t len)
52 if (imap_parse_path (path, &mx) < 0)
55 mutt_account_tourl (&mx.account, &url);
58 rc = url_ciss_tostring (&url, path, len, U_DECODE_PASSWD);
64 /* imap_parse_path: given an IMAP mailbox name, return host, port
65 * and a path IMAP servers will recognise.
66 * mx.mbox is malloc'd, caller must free it */
67 int imap_parse_path (const char *path, IMAP_MBOX * mx)
69 static unsigned short ImapPort = 0;
70 static unsigned short ImapsPort = 0;
71 struct servent *service;
76 service = getservbyname ("imap", "tcp");
78 ImapPort = ntohs (service->s_port);
81 debug_print (3, ("Using default IMAP port %d\n", ImapPort));
84 service = getservbyname ("imaps", "tcp");
86 ImapsPort = ntohs (service->s_port);
88 ImapsPort = IMAP_SSL_PORT;
89 debug_print (3, ("Using default IMAPS port %d\n", ImapsPort));
93 mx->account.flags = 0;
94 mx->account.port = ImapPort;
95 mx->account.type = M_ACCT_TYPE_IMAP;
97 c = safe_strdup (path);
98 url_parse_ciss (&url, c);
100 if (!(url.scheme == U_IMAP || url.scheme == U_IMAPS) ||
101 mutt_account_fromurl (&mx->account, &url) < 0) {
106 mx->mbox = safe_strdup (url.path);
108 if (url.scheme == U_IMAPS)
109 mx->account.flags |= M_ACCT_SSL;
113 #if defined(USE_SSL) || defined(USE_GNUTLS)
114 if (option (OPTIMAPFORCESSL))
115 mx->account.flags |= M_ACCT_SSL;
118 if ((mx->account.flags & M_ACCT_SSL) && !(mx->account.flags & M_ACCT_PORT))
119 mx->account.port = ImapsPort;
124 /* imap_pretty_mailbox: called by mutt_pretty_mailbox to make IMAP paths
126 void imap_pretty_mailbox (char *path)
128 IMAP_MBOX home, target;
135 if (imap_parse_path (path, &target) < 0)
138 tlen = mutt_strlen (target.mbox);
139 /* check whether we can do '=' substitution */
140 if (mx_get_magic (Maildir) == M_IMAP && !imap_parse_path (Maildir, &home)) {
141 hlen = mutt_strlen (home.mbox);
142 if (tlen && mutt_account_match (&home.account, &target.account) &&
143 !safe_strncmp (home.mbox, target.mbox, hlen)) {
147 for (delim = ImapDelimChars; *delim != '\0'; delim++)
148 if (target.mbox[hlen] == *delim)
154 /* do the '=' substitution */
157 /* copy remaining path, skipping delimiter */
160 memcpy (path, target.mbox + hlen + 1, tlen - hlen - 1);
161 path[tlen - hlen - 1] = '\0';
164 mutt_account_tourl (&target.account, &url);
165 url.path = target.mbox;
166 /* FIXME: That hard-coded constant is bogus. But we need the actual
167 * size of the buffer from mutt_pretty_mailbox. And these pretty
168 * operations usually shrink the result. Still... */
169 url_ciss_tostring (&url, path, 1024, 0);
175 /* -- library functions -- */
177 /* imap_continue: display a message and ask the user if she wants to
179 int imap_continue (const char *msg, const char *resp)
181 imap_error (msg, resp);
182 return mutt_yesorno (_("Continue?"), 0);
185 /* imap_error: show an error and abort */
186 void imap_error (const char *where, const char *msg)
188 mutt_error ("%s [%s]\n", where, msg);
192 /* imap_new_idata: Allocate and initialise a new IMAP_DATA structure.
193 * Returns NULL on failure (no mem) */
194 IMAP_DATA *imap_new_idata (void)
196 return safe_calloc (1, sizeof (IMAP_DATA));
199 /* imap_free_idata: Release and clear storage in an IMAP_DATA structure. */
200 void imap_free_idata (IMAP_DATA ** idata)
205 FREE (&(*idata)->capstr);
206 mutt_free_list (&(*idata)->flags);
207 FREE (&((*idata)->cmd.buf));
212 * Fix up the imap path. This is necessary because the rest of mutt
213 * assumes a hierarchy delimiter of '/', which is not necessarily true
214 * in IMAP. Additionally, the filesystem converts multiple hierarchy
215 * delimiters into a single one, ie "///" is equal to "/". IMAP servers
216 * are not required to do this.
217 * Moreover, IMAP servers may dislike the path ending with the delimiter.
219 char *imap_fix_path (IMAP_DATA * idata, char *mailbox, char *path,
224 if (!mailbox || !*mailbox) {
225 strfcpy (path, "INBOX", plen);
229 while (mailbox && *mailbox && (x < (plen - 1))) {
230 if ((*mailbox == '/') || (*mailbox == idata->delim)) {
231 while ((*mailbox == '/') || (*mailbox == idata->delim))
233 path[x] = idata->delim;
241 if (x && path[--x] != idata->delim)
247 /* imap_get_literal_count: write number of bytes in an IMAP literal into
248 * bytes, return 0 on success, -1 on failure. */
249 int imap_get_literal_count (const char *buf, long *bytes)
254 if (!(pc = strchr (buf, '{')))
258 while (isdigit ((unsigned char) *pc))
265 /* imap_get_qualifier: in a tagged response, skip tag and status for
266 * the qualifier message. Used by imap_copy_message for TRYCREATE */
267 char *imap_get_qualifier (char *buf)
272 s = imap_next_word (s);
273 /* skip OK/NO/BAD response */
274 s = imap_next_word (s);
279 /* imap_next_word: return index into string where next IMAP word begins */
280 char *imap_next_word (char *s)
292 quoted = quoted ? 0 : 1;
293 if (!quoted && ISSPACE (*s))
302 /* imap_parse_date: date is of the form: DD-MMM-YYYY HH:MM:SS +ZZzz */
303 time_t imap_parse_date (char *s)
308 t.tm_mday = (s[0] == ' ' ? s[1] - '0' : (s[0] - '0') * 10 + (s[1] - '0'));
313 t.tm_mon = mutt_check_month (s);
319 (s[0] - '0') * 1000 + (s[1] - '0') * 100 + (s[2] - '0') * 10 + (s[3] -
328 t.tm_hour = (s[0] - '0') * 10 + (s[1] - '0');
333 t.tm_min = (s[0] - '0') * 10 + (s[1] - '0');
338 t.tm_sec = (s[0] - '0') * 10 + (s[1] - '0');
345 tz = ((s[1] - '0') * 10 + (s[2] - '0')) * 3600 +
346 ((s[3] - '0') * 10 + (s[4] - '0')) * 60;
350 return (mutt_mktime (&t, 0) + tz);
353 /* imap_qualify_path: make an absolute IMAP folder target, given IMAP_MBOX
354 * and relative path. */
355 void imap_qualify_path (char *dest, size_t len, IMAP_MBOX * mx, char *path)
359 mutt_account_tourl (&mx->account, &url);
362 url_ciss_tostring (&url, dest, len, 0);
366 /* imap_quote_string: quote string according to IMAP rules:
367 * surround string with quotes, escape " and \ with \ */
368 void imap_quote_string (char *dest, size_t dlen, const char *src)
370 char quote[] = "\"\\", *pt;
377 /* save room for trailing quote-char */
380 for (; *s && dlen; s++) {
381 if (strchr (quote, *s)) {
397 /* imap_unquote_string: equally stupid unquoting routine */
398 void imap_unquote_string (char *s)
425 * Quoting and UTF-7 conversion
428 void imap_munge_mbox_name (char *dest, size_t dlen, const char *src)
432 buf = safe_strdup (src);
433 imap_utf7_encode (&buf);
435 imap_quote_string (dest, dlen, buf);
440 void imap_unmunge_mbox_name (char *s)
444 imap_unquote_string (s);
446 buf = safe_strdup (s);
448 imap_utf7_decode (&buf);
449 strncpy (s, buf, mutt_strlen (s));
455 /* imap_wordcasecmp: find word a in word list b */
456 int imap_wordcasecmp (const char *a, const char *b)
458 char tmp[SHORT_STRING];
459 char *s = (char *) b;
462 tmp[SHORT_STRING - 1] = 0;
463 for (i = 0; i < SHORT_STRING - 2; i++, s++) {
464 if (!*s || ISSPACE (*s)) {
472 return ascii_strcasecmp (a, tmp);
476 * Imap keepalive: poll the current folder to keep the
481 static RETSIGTYPE alrm_handler (int sig)
486 void imap_keepalive (void)
492 conn = mutt_socket_head ();
494 if (conn->account.type == M_ACCT_TYPE_IMAP) {
495 idata = (IMAP_DATA *) conn->data;
497 if (idata->state >= IMAP_AUTHENTICATED
498 && time (NULL) >= idata->lastread + ImapKeepalive) {
502 ctx = safe_calloc (1, sizeof (CONTEXT));
505 imap_check_mailbox (ctx, NULL, 1);
515 int imap_wait_keepalive (pid_t pid)
517 struct sigaction oldalrm;
518 struct sigaction act;
522 short imap_passive = option (OPTIMAPPASSIVE);
524 set_option (OPTIMAPPASSIVE);
525 set_option (OPTKEEPQUIET);
527 sigprocmask (SIG_SETMASK, NULL, &oldmask);
529 sigemptyset (&act.sa_mask);
530 act.sa_handler = alrm_handler;
532 act.sa_flags = SA_INTERRUPT;
537 sigaction (SIGALRM, &act, &oldalrm);
539 alarm (ImapKeepalive);
540 while (waitpid (pid, &rc, 0) < 0 && errno == EINTR) {
541 alarm (0); /* cancel a possibly pending alarm */
543 alarm (ImapKeepalive);
546 alarm (0); /* cancel a possibly pending alarm */
548 sigaction (SIGALRM, &oldalrm, NULL);
549 sigprocmask (SIG_SETMASK, &oldmask, NULL);
551 unset_option (OPTKEEPQUIET);
553 unset_option (OPTIMAPPASSIVE);
558 /* Allow/disallow re-opening a folder upon expunge. */
560 void imap_allow_reopen (CONTEXT * ctx)
562 if (ctx && ctx->magic == M_IMAP && CTX_DATA->ctx == ctx)
563 CTX_DATA->reopen |= IMAP_REOPEN_ALLOW;
566 void imap_disallow_reopen (CONTEXT * ctx)
568 if (ctx && ctx->magic == M_IMAP && CTX_DATA->ctx == ctx)
569 CTX_DATA->reopen &= ~IMAP_REOPEN_ALLOW;