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imap-send: handle missing response codes gracefully
[git.git] / imap-send.c
blobefa6af4b511219821875414def17dd2b727228fc
1 /*
2 * git-imap-send - drops patches into an imap Drafts folder
3 * derived from isync/mbsync - mailbox synchronizer
4 *
5 * Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
6 * Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
7 * Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
8 * Copyright (C) 2006 Mike McCormack
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #include "cache.h"
26 #include "credential.h"
27 #include "exec_cmd.h"
28 #include "run-command.h"
29 #include "parse-options.h"
30 #ifdef NO_OPENSSL
31 typedef void *SSL;
32 #endif
33 #ifdef USE_CURL_FOR_IMAP_SEND
34 #include "http.h"
35 #endif
36
37 #if defined(USE_CURL_FOR_IMAP_SEND) && defined(NO_OPENSSL)
38 /* only available option */
39 #define USE_CURL_DEFAULT 1
40 #else
41 /* strictly opt in */
42 #define USE_CURL_DEFAULT 0
43 #endif
44
45 static int verbosity;
46 static int use_curl = USE_CURL_DEFAULT;
47
48 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
49
50 static struct option imap_send_options[] = {
51 OPT__VERBOSITY(&verbosity),
52 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
53 OPT_END()
54 };
55
56 #undef DRV_OK
57 #define DRV_OK 0
58 #define DRV_MSG_BAD -1
59 #define DRV_BOX_BAD -2
60 #define DRV_STORE_BAD -3
61
62 __attribute__((format (printf, 1, 2)))
63 static void imap_info(const char *, ...);
64 __attribute__((format (printf, 1, 2)))
65 static void imap_warn(const char *, ...);
66
67 static char *next_arg(char **);
68
69 __attribute__((format (printf, 3, 4)))
70 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
71
72 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
73 {
74 int len;
75 char tmp[8192];
76
77 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
78 if (len < 0)
79 die("Fatal: Out of memory");
80 if (len >= sizeof(tmp))
81 die("imap command overflow!");
82 *strp = xmemdupz(tmp, len);
83 return len;
84 }
85
86 struct imap_server_conf {
87 char *name;
88 char *tunnel;
89 char *host;
90 int port;
91 char *folder;
92 char *user;
93 char *pass;
94 int use_ssl;
95 int ssl_verify;
96 int use_html;
97 char *auth_method;
98 };
99
100 static struct imap_server_conf server = {
101 NULL, /* name */
102 NULL, /* tunnel */
103 NULL, /* host */
104 0, /* port */
105 NULL, /* folder */
106 NULL, /* user */
107 NULL, /* pass */
108 0, /* use_ssl */
109 1, /* ssl_verify */
110 0, /* use_html */
111 NULL, /* auth_method */
112 };
113
114 struct imap_socket {
115 int fd[2];
116 SSL *ssl;
117 };
118
119 struct imap_buffer {
120 struct imap_socket sock;
121 int bytes;
122 int offset;
123 char buf[1024];
124 };
125
126 struct imap_cmd;
127
128 struct imap {
129 int uidnext; /* from SELECT responses */
130 unsigned caps, rcaps; /* CAPABILITY results */
131 /* command queue */
132 int nexttag, num_in_progress, literal_pending;
133 struct imap_cmd *in_progress, **in_progress_append;
134 struct imap_buffer buf; /* this is BIG, so put it last */
135 };
136
137 struct imap_store {
138 /* currently open mailbox */
139 const char *name; /* foreign! maybe preset? */
140 int uidvalidity;
141 struct imap *imap;
142 const char *prefix;
143 };
144
145 struct imap_cmd_cb {
146 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
147 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
148 void *ctx;
149 char *data;
150 int dlen;
151 int uid;
152 };
153
154 struct imap_cmd {
155 struct imap_cmd *next;
156 struct imap_cmd_cb cb;
157 char *cmd;
158 int tag;
159 };
160
161 #define CAP(cap) (imap->caps & (1 << (cap)))
162
163 enum CAPABILITY {
164 NOLOGIN = 0,
165 UIDPLUS,
166 LITERALPLUS,
167 NAMESPACE,
168 STARTTLS,
169 AUTH_CRAM_MD5
170 };
171
172 static const char *cap_list[] = {
173 "LOGINDISABLED",
174 "UIDPLUS",
175 "LITERAL+",
176 "NAMESPACE",
177 "STARTTLS",
178 "AUTH=CRAM-MD5",
179 };
180
181 #define RESP_OK 0
182 #define RESP_NO 1
183 #define RESP_BAD 2
184
185 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
186
187
188 #ifndef NO_OPENSSL
189 static void ssl_socket_perror(const char *func)
190 {
191 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
192 }
193 #endif
194
195 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
196 {
197 #ifndef NO_OPENSSL
198 if (sock->ssl) {
199 int sslerr = SSL_get_error(sock->ssl, ret);
200 switch (sslerr) {
201 case SSL_ERROR_NONE:
202 break;
203 case SSL_ERROR_SYSCALL:
204 perror("SSL_connect");
205 break;
206 default:
207 ssl_socket_perror("SSL_connect");
208 break;
209 }
210 } else
211 #endif
212 {
213 if (ret < 0)
214 perror(func);
215 else
216 fprintf(stderr, "%s: unexpected EOF\n", func);
217 }
218 }
219
220 #ifdef NO_OPENSSL
221 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
222 {
223 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
224 return -1;
225 }
226
227 #else
228
229 static int host_matches(const char *host, const char *pattern)
230 {
231 if (pattern[0] == '*' && pattern[1] == '.') {
232 pattern += 2;
233 if (!(host = strchr(host, '.')))
234 return 0;
235 host++;
236 }
237
238 return *host && *pattern && !strcasecmp(host, pattern);
239 }
240
241 static int verify_hostname(X509 *cert, const char *hostname)
242 {
243 int len;
244 X509_NAME *subj;
245 char cname[1000];
246 int i, found;
247 STACK_OF(GENERAL_NAME) *subj_alt_names;
248
249 /* try the DNS subjectAltNames */
250 found = 0;
251 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
252 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
253 for (i = 0; !found && i < num_subj_alt_names; i++) {
254 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
255 if (subj_alt_name->type == GEN_DNS &&
256 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
257 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
258 found = 1;
259 }
260 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
261 }
262 if (found)
263 return 0;
264
265 /* try the common name */
266 if (!(subj = X509_get_subject_name(cert)))
267 return error("cannot get certificate subject");
268 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
269 return error("cannot get certificate common name");
270 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
271 return 0;
272 return error("certificate owner '%s' does not match hostname '%s'",
273 cname, hostname);
274 }
275
276 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
277 {
278 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
279 const SSL_METHOD *meth;
280 #else
281 SSL_METHOD *meth;
282 #endif
283 SSL_CTX *ctx;
284 int ret;
285 X509 *cert;
286
287 SSL_library_init();
288 SSL_load_error_strings();
289
290 meth = SSLv23_method();
291 if (!meth) {
292 ssl_socket_perror("SSLv23_method");
293 return -1;
294 }
295
296 ctx = SSL_CTX_new(meth);
297 if (!ctx) {
298 ssl_socket_perror("SSL_CTX_new");
299 return -1;
300 }
301
302 if (use_tls_only)
303 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
304
305 if (verify)
306 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
307
308 if (!SSL_CTX_set_default_verify_paths(ctx)) {
309 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
310 return -1;
311 }
312 sock->ssl = SSL_new(ctx);
313 if (!sock->ssl) {
314 ssl_socket_perror("SSL_new");
315 return -1;
316 }
317 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
318 ssl_socket_perror("SSL_set_rfd");
319 return -1;
320 }
321 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
322 ssl_socket_perror("SSL_set_wfd");
323 return -1;
324 }
325
326 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
327 /*
328 * SNI (RFC4366)
329 * OpenSSL does not document this function, but the implementation
330 * returns 1 on success, 0 on failure after calling SSLerr().
331 */
332 ret = SSL_set_tlsext_host_name(sock->ssl, server.host);
333 if (ret != 1)
334 warning("SSL_set_tlsext_host_name(%s) failed.", server.host);
335 #endif
336
337 ret = SSL_connect(sock->ssl);
338 if (ret <= 0) {
339 socket_perror("SSL_connect", sock, ret);
340 return -1;
341 }
342
343 if (verify) {
344 /* make sure the hostname matches that of the certificate */
345 cert = SSL_get_peer_certificate(sock->ssl);
346 if (!cert)
347 return error("unable to get peer certificate.");
348 if (verify_hostname(cert, server.host) < 0)
349 return -1;
350 }
351
352 return 0;
353 }
354 #endif
355
356 static int socket_read(struct imap_socket *sock, char *buf, int len)
357 {
358 ssize_t n;
359 #ifndef NO_OPENSSL
360 if (sock->ssl)
361 n = SSL_read(sock->ssl, buf, len);
362 else
363 #endif
364 n = xread(sock->fd[0], buf, len);
365 if (n <= 0) {
366 socket_perror("read", sock, n);
367 close(sock->fd[0]);
368 close(sock->fd[1]);
369 sock->fd[0] = sock->fd[1] = -1;
370 }
371 return n;
372 }
373
374 static int socket_write(struct imap_socket *sock, const char *buf, int len)
375 {
376 int n;
377 #ifndef NO_OPENSSL
378 if (sock->ssl)
379 n = SSL_write(sock->ssl, buf, len);
380 else
381 #endif
382 n = write_in_full(sock->fd[1], buf, len);
383 if (n != len) {
384 socket_perror("write", sock, n);
385 close(sock->fd[0]);
386 close(sock->fd[1]);
387 sock->fd[0] = sock->fd[1] = -1;
388 }
389 return n;
390 }
391
392 static void socket_shutdown(struct imap_socket *sock)
393 {
394 #ifndef NO_OPENSSL
395 if (sock->ssl) {
396 SSL_shutdown(sock->ssl);
397 SSL_free(sock->ssl);
398 }
399 #endif
400 close(sock->fd[0]);
401 close(sock->fd[1]);
402 }
403
404 /* simple line buffering */
405 static int buffer_gets(struct imap_buffer *b, char **s)
406 {
407 int n;
408 int start = b->offset;
409
410 *s = b->buf + start;
411
412 for (;;) {
413 /* make sure we have enough data to read the \r\n sequence */
414 if (b->offset + 1 >= b->bytes) {
415 if (start) {
416 /* shift down used bytes */
417 *s = b->buf;
418
419 assert(start <= b->bytes);
420 n = b->bytes - start;
421
422 if (n)
423 memmove(b->buf, b->buf + start, n);
424 b->offset -= start;
425 b->bytes = n;
426 start = 0;
427 }
428
429 n = socket_read(&b->sock, b->buf + b->bytes,
430 sizeof(b->buf) - b->bytes);
431
432 if (n <= 0)
433 return -1;
434
435 b->bytes += n;
436 }
437
438 if (b->buf[b->offset] == '\r') {
439 assert(b->offset + 1 < b->bytes);
440 if (b->buf[b->offset + 1] == '\n') {
441 b->buf[b->offset] = 0; /* terminate the string */
442 b->offset += 2; /* next line */
443 if (0 < verbosity)
444 puts(*s);
445 return 0;
446 }
447 }
448
449 b->offset++;
450 }
451 /* not reached */
452 }
453
454 static void imap_info(const char *msg, ...)
455 {
456 va_list va;
457
458 if (0 <= verbosity) {
459 va_start(va, msg);
460 vprintf(msg, va);
461 va_end(va);
462 fflush(stdout);
463 }
464 }
465
466 static void imap_warn(const char *msg, ...)
467 {
468 va_list va;
469
470 if (-2 < verbosity) {
471 va_start(va, msg);
472 vfprintf(stderr, msg, va);
473 va_end(va);
474 }
475 }
476
477 static char *next_arg(char **s)
478 {
479 char *ret;
480
481 if (!s || !*s)
482 return NULL;
483 while (isspace((unsigned char) **s))
484 (*s)++;
485 if (!**s) {
486 *s = NULL;
487 return NULL;
488 }
489 if (**s == '"') {
490 ++*s;
491 ret = *s;
492 *s = strchr(*s, '"');
493 } else {
494 ret = *s;
495 while (**s && !isspace((unsigned char) **s))
496 (*s)++;
497 }
498 if (*s) {
499 if (**s)
500 *(*s)++ = 0;
501 if (!**s)
502 *s = NULL;
503 }
504 return ret;
505 }
506
507 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
508 {
509 int ret;
510 va_list va;
511
512 va_start(va, fmt);
513 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
514 die("BUG: buffer too small. Please report a bug.");
515 va_end(va);
516 return ret;
517 }
518
519 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
520 struct imap_cmd_cb *cb,
521 const char *fmt, va_list ap)
522 {
523 struct imap *imap = ctx->imap;
524 struct imap_cmd *cmd;
525 int n, bufl;
526 char buf[1024];
527
528 cmd = xmalloc(sizeof(struct imap_cmd));
529 nfvasprintf(&cmd->cmd, fmt, ap);
530 cmd->tag = ++imap->nexttag;
531
532 if (cb)
533 cmd->cb = *cb;
534 else
535 memset(&cmd->cb, 0, sizeof(cmd->cb));
536
537 while (imap->literal_pending)
538 get_cmd_result(ctx, NULL);
539
540 if (!cmd->cb.data)
541 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
542 else
543 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
544 cmd->tag, cmd->cmd, cmd->cb.dlen,
545 CAP(LITERALPLUS) ? "+" : "");
546
547 if (0 < verbosity) {
548 if (imap->num_in_progress)
549 printf("(%d in progress) ", imap->num_in_progress);
550 if (!starts_with(cmd->cmd, "LOGIN"))
551 printf(">>> %s", buf);
552 else
553 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
554 }
555 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
556 free(cmd->cmd);
557 free(cmd);
558 if (cb)
559 free(cb->data);
560 return NULL;
561 }
562 if (cmd->cb.data) {
563 if (CAP(LITERALPLUS)) {
564 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
565 free(cmd->cb.data);
566 if (n != cmd->cb.dlen ||
567 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
568 free(cmd->cmd);
569 free(cmd);
570 return NULL;
571 }
572 cmd->cb.data = NULL;
573 } else
574 imap->literal_pending = 1;
575 } else if (cmd->cb.cont)
576 imap->literal_pending = 1;
577 cmd->next = NULL;
578 *imap->in_progress_append = cmd;
579 imap->in_progress_append = &cmd->next;
580 imap->num_in_progress++;
581 return cmd;
582 }
583
584 __attribute__((format (printf, 3, 4)))
585 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
586 const char *fmt, ...)
587 {
588 va_list ap;
589 struct imap_cmd *cmdp;
590
591 va_start(ap, fmt);
592 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
593 va_end(ap);
594 if (!cmdp)
595 return RESP_BAD;
596
597 return get_cmd_result(ctx, cmdp);
598 }
599
600 __attribute__((format (printf, 3, 4)))
601 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
602 const char *fmt, ...)
603 {
604 va_list ap;
605 struct imap_cmd *cmdp;
606
607 va_start(ap, fmt);
608 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
609 va_end(ap);
610 if (!cmdp)
611 return DRV_STORE_BAD;
612
613 switch (get_cmd_result(ctx, cmdp)) {
614 case RESP_BAD: return DRV_STORE_BAD;
615 case RESP_NO: return DRV_MSG_BAD;
616 default: return DRV_OK;
617 }
618 }
619
620 static int skip_imap_list_l(char **sp, int level)
621 {
622 char *s = *sp;
623
624 for (;;) {
625 while (isspace((unsigned char)*s))
626 s++;
627 if (level && *s == ')') {
628 s++;
629 break;
630 }
631 if (*s == '(') {
632 /* sublist */
633 s++;
634 if (skip_imap_list_l(&s, level + 1))
635 goto bail;
636 } else if (*s == '"') {
637 /* quoted string */
638 s++;
639 for (; *s != '"'; s++)
640 if (!*s)
641 goto bail;
642 s++;
643 } else {
644 /* atom */
645 for (; *s && !isspace((unsigned char)*s); s++)
646 if (level && *s == ')')
647 break;
648 }
649
650 if (!level)
651 break;
652 if (!*s)
653 goto bail;
654 }
655 *sp = s;
656 return 0;
657
658 bail:
659 return -1;
660 }
661
662 static void skip_list(char **sp)
663 {
664 skip_imap_list_l(sp, 0);
665 }
666
667 static void parse_capability(struct imap *imap, char *cmd)
668 {
669 char *arg;
670 unsigned i;
671
672 imap->caps = 0x80000000;
673 while ((arg = next_arg(&cmd)))
674 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
675 if (!strcmp(cap_list[i], arg))
676 imap->caps |= 1 << i;
677 imap->rcaps = imap->caps;
678 }
679
680 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
681 char *s)
682 {
683 struct imap *imap = ctx->imap;
684 char *arg, *p;
685
686 if (!s || *s != '[')
687 return RESP_OK; /* no response code */
688 s++;
689 if (!(p = strchr(s, ']'))) {
690 fprintf(stderr, "IMAP error: malformed response code\n");
691 return RESP_BAD;
692 }
693 *p++ = 0;
694 arg = next_arg(&s);
695 if (!arg) {
696 fprintf(stderr, "IMAP error: empty response code\n");
697 return RESP_BAD;
698 }
699 if (!strcmp("UIDVALIDITY", arg)) {
700 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
701 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
702 return RESP_BAD;
703 }
704 } else if (!strcmp("UIDNEXT", arg)) {
705 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
706 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
707 return RESP_BAD;
708 }
709 } else if (!strcmp("CAPABILITY", arg)) {
710 parse_capability(imap, s);
711 } else if (!strcmp("ALERT", arg)) {
712 /* RFC2060 says that these messages MUST be displayed
713 * to the user
714 */
715 for (; isspace((unsigned char)*p); p++);
716 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
717 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
718 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
719 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
720 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
721 return RESP_BAD;
722 }
723 }
724 return RESP_OK;
725 }
726
727 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
728 {
729 struct imap *imap = ctx->imap;
730 struct imap_cmd *cmdp, **pcmdp;
731 char *cmd;
732 const char *arg, *arg1;
733 int n, resp, resp2, tag;
734
735 for (;;) {
736 if (buffer_gets(&imap->buf, &cmd))
737 return RESP_BAD;
738
739 arg = next_arg(&cmd);
740 if (!arg) {
741 fprintf(stderr, "IMAP error: empty response\n");
742 return RESP_BAD;
743 }
744 if (*arg == '*') {
745 arg = next_arg(&cmd);
746 if (!arg) {
747 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
748 return RESP_BAD;
749 }
750
751 if (!strcmp("NAMESPACE", arg)) {
752 /* rfc2342 NAMESPACE response. */
753 skip_list(&cmd); /* Personal mailboxes */
754 skip_list(&cmd); /* Others' mailboxes */
755 skip_list(&cmd); /* Shared mailboxes */
756 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
757 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
758 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
759 return resp;
760 } else if (!strcmp("CAPABILITY", arg)) {
761 parse_capability(imap, cmd);
762 } else if ((arg1 = next_arg(&cmd))) {
763 ; /*
764 * Unhandled response-data with at least two words.
765 * Ignore it.
766 *
767 * NEEDSWORK: Previously this case handled '<num> EXISTS'
768 * and '<num> RECENT' but as a probably-unintended side
769 * effect it ignores other unrecognized two-word
770 * responses. imap-send doesn't ever try to read
771 * messages or mailboxes these days, so consider
772 * eliminating this case.
773 */
774 } else {
775 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
776 return RESP_BAD;
777 }
778 } else if (!imap->in_progress) {
779 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
780 return RESP_BAD;
781 } else if (*arg == '+') {
782 /* This can happen only with the last command underway, as
783 it enforces a round-trip. */
784 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
785 offsetof(struct imap_cmd, next));
786 if (cmdp->cb.data) {
787 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
788 free(cmdp->cb.data);
789 cmdp->cb.data = NULL;
790 if (n != (int)cmdp->cb.dlen)
791 return RESP_BAD;
792 } else if (cmdp->cb.cont) {
793 if (cmdp->cb.cont(ctx, cmdp, cmd))
794 return RESP_BAD;
795 } else {
796 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
797 return RESP_BAD;
798 }
799 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
800 return RESP_BAD;
801 if (!cmdp->cb.cont)
802 imap->literal_pending = 0;
803 if (!tcmd)
804 return DRV_OK;
805 } else {
806 tag = atoi(arg);
807 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
808 if (cmdp->tag == tag)
809 goto gottag;
810 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
811 return RESP_BAD;
812 gottag:
813 if (!(*pcmdp = cmdp->next))
814 imap->in_progress_append = pcmdp;
815 imap->num_in_progress--;
816 if (cmdp->cb.cont || cmdp->cb.data)
817 imap->literal_pending = 0;
818 arg = next_arg(&cmd);
819 if (!arg)
820 arg = "";
821 if (!strcmp("OK", arg))
822 resp = DRV_OK;
823 else {
824 if (!strcmp("NO", arg))
825 resp = RESP_NO;
826 else /*if (!strcmp("BAD", arg))*/
827 resp = RESP_BAD;
828 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
829 !starts_with(cmdp->cmd, "LOGIN") ?
830 cmdp->cmd : "LOGIN <user> <pass>",
831 arg, cmd ? cmd : "");
832 }
833 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
834 resp = resp2;
835 if (cmdp->cb.done)
836 cmdp->cb.done(ctx, cmdp, resp);
837 free(cmdp->cb.data);
838 free(cmdp->cmd);
839 free(cmdp);
840 if (!tcmd || tcmd == cmdp)
841 return resp;
842 }
843 }
844 /* not reached */
845 }
846
847 static void imap_close_server(struct imap_store *ictx)
848 {
849 struct imap *imap = ictx->imap;
850
851 if (imap->buf.sock.fd[0] != -1) {
852 imap_exec(ictx, NULL, "LOGOUT");
853 socket_shutdown(&imap->buf.sock);
854 }
855 free(imap);
856 }
857
858 static void imap_close_store(struct imap_store *ctx)
859 {
860 imap_close_server(ctx);
861 free(ctx);
862 }
863
864 #ifndef NO_OPENSSL
865
866 /*
867 * hexchar() and cram() functions are based on the code from the isync
868 * project (http://isync.sf.net/).
869 */
870 static char hexchar(unsigned int b)
871 {
872 return b < 10 ? '0' + b : 'a' + (b - 10);
873 }
874
875 #define ENCODED_SIZE(n) (4*((n+2)/3))
876 static char *cram(const char *challenge_64, const char *user, const char *pass)
877 {
878 int i, resp_len, encoded_len, decoded_len;
879 unsigned char hash[16];
880 char hex[33];
881 char *response, *response_64, *challenge;
882
883 /*
884 * length of challenge_64 (i.e. base-64 encoded string) is a good
885 * enough upper bound for challenge (decoded result).
886 */
887 encoded_len = strlen(challenge_64);
888 challenge = xmalloc(encoded_len);
889 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
890 (unsigned char *)challenge_64, encoded_len);
891 if (decoded_len < 0)
892 die("invalid challenge %s", challenge_64);
893 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
894 die("HMAC error");
895
896 hex[32] = 0;
897 for (i = 0; i < 16; i++) {
898 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
899 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
900 }
901
902 /* response: "<user> <digest in hex>" */
903 response = xstrfmt("%s %s", user, hex);
904 resp_len = strlen(response);
905
906 response_64 = xmallocz(ENCODED_SIZE(resp_len));
907 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
908 (unsigned char *)response, resp_len);
909 if (encoded_len < 0)
910 die("EVP_EncodeBlock error");
911 return (char *)response_64;
912 }
913
914 #else
915
916 static char *cram(const char *challenge_64, const char *user, const char *pass)
917 {
918 die("If you want to use CRAM-MD5 authenticate method, "
919 "you have to build git-imap-send with OpenSSL library.");
920 }
921
922 #endif
923
924 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
925 {
926 int ret;
927 char *response;
928
929 response = cram(prompt, server.user, server.pass);
930
931 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
932 if (ret != strlen(response))
933 return error("IMAP error: sending response failed");
934
935 free(response);
936
937 return 0;
938 }
939
940 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
941 {
942 struct credential cred = CREDENTIAL_INIT;
943 struct imap_store *ctx;
944 struct imap *imap;
945 char *arg, *rsp;
946 int s = -1, preauth;
947
948 ctx = xcalloc(1, sizeof(*ctx));
949
950 ctx->imap = imap = xcalloc(1, sizeof(*imap));
951 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
952 imap->in_progress_append = &imap->in_progress;
953
954 /* open connection to IMAP server */
955
956 if (srvc->tunnel) {
957 struct child_process tunnel = CHILD_PROCESS_INIT;
958
959 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
960
961 argv_array_push(&tunnel.args, srvc->tunnel);
962 tunnel.use_shell = 1;
963 tunnel.in = -1;
964 tunnel.out = -1;
965 if (start_command(&tunnel))
966 die("cannot start proxy %s", srvc->tunnel);
967
968 imap->buf.sock.fd[0] = tunnel.out;
969 imap->buf.sock.fd[1] = tunnel.in;
970
971 imap_info("ok\n");
972 } else {
973 #ifndef NO_IPV6
974 struct addrinfo hints, *ai0, *ai;
975 int gai;
976 char portstr[6];
977
978 snprintf(portstr, sizeof(portstr), "%d", srvc->port);
979
980 memset(&hints, 0, sizeof(hints));
981 hints.ai_socktype = SOCK_STREAM;
982 hints.ai_protocol = IPPROTO_TCP;
983
984 imap_info("Resolving %s... ", srvc->host);
985 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
986 if (gai) {
987 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
988 goto bail;
989 }
990 imap_info("ok\n");
991
992 for (ai0 = ai; ai; ai = ai->ai_next) {
993 char addr[NI_MAXHOST];
994
995 s = socket(ai->ai_family, ai->ai_socktype,
996 ai->ai_protocol);
997 if (s < 0)
998 continue;
999
1000 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1001 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1002 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1003
1004 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1005 close(s);
1006 s = -1;
1007 perror("connect");
1008 continue;
1009 }
1010
1011 break;
1012 }
1013 freeaddrinfo(ai0);
1014 #else /* NO_IPV6 */
1015 struct hostent *he;
1016 struct sockaddr_in addr;
1017
1018 memset(&addr, 0, sizeof(addr));
1019 addr.sin_port = htons(srvc->port);
1020 addr.sin_family = AF_INET;
1021
1022 imap_info("Resolving %s... ", srvc->host);
1023 he = gethostbyname(srvc->host);
1024 if (!he) {
1025 perror("gethostbyname");
1026 goto bail;
1027 }
1028 imap_info("ok\n");
1029
1030 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1031
1032 s = socket(PF_INET, SOCK_STREAM, 0);
1033
1034 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1035 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1036 close(s);
1037 s = -1;
1038 perror("connect");
1039 }
1040 #endif
1041 if (s < 0) {
1042 fputs("Error: unable to connect to server.\n", stderr);
1043 goto bail;
1044 }
1045
1046 imap->buf.sock.fd[0] = s;
1047 imap->buf.sock.fd[1] = dup(s);
1048
1049 if (srvc->use_ssl &&
1050 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1051 close(s);
1052 goto bail;
1053 }
1054 imap_info("ok\n");
1055 }
1056
1057 /* read the greeting string */
1058 if (buffer_gets(&imap->buf, &rsp)) {
1059 fprintf(stderr, "IMAP error: no greeting response\n");
1060 goto bail;
1061 }
1062 arg = next_arg(&rsp);
1063 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1064 fprintf(stderr, "IMAP error: invalid greeting response\n");
1065 goto bail;
1066 }
1067 preauth = 0;
1068 if (!strcmp("PREAUTH", arg))
1069 preauth = 1;
1070 else if (strcmp("OK", arg) != 0) {
1071 fprintf(stderr, "IMAP error: unknown greeting response\n");
1072 goto bail;
1073 }
1074 parse_response_code(ctx, NULL, rsp);
1075 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1076 goto bail;
1077
1078 if (!preauth) {
1079 #ifndef NO_OPENSSL
1080 if (!srvc->use_ssl && CAP(STARTTLS)) {
1081 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1082 goto bail;
1083 if (ssl_socket_connect(&imap->buf.sock, 1,
1084 srvc->ssl_verify))
1085 goto bail;
1086 /* capabilities may have changed, so get the new capabilities */
1087 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1088 goto bail;
1089 }
1090 #endif
1091 imap_info("Logging in...\n");
1092 if (!srvc->user || !srvc->pass) {
1093 cred.protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
1094 cred.host = xstrdup(srvc->host);
1095
1096 cred.username = xstrdup_or_null(srvc->user);
1097 cred.password = xstrdup_or_null(srvc->pass);
1098
1099 credential_fill(&cred);
1100
1101 if (!srvc->user)
1102 srvc->user = xstrdup(cred.username);
1103 if (!srvc->pass)
1104 srvc->pass = xstrdup(cred.password);
1105 }
1106
1107 if (srvc->auth_method) {
1108 struct imap_cmd_cb cb;
1109
1110 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1111 if (!CAP(AUTH_CRAM_MD5)) {
1112 fprintf(stderr, "You specified"
1113 "CRAM-MD5 as authentication method, "
1114 "but %s doesn't support it.\n", srvc->host);
1115 goto bail;
1116 }
1117 /* CRAM-MD5 */
1118
1119 memset(&cb, 0, sizeof(cb));
1120 cb.cont = auth_cram_md5;
1121 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1122 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1123 goto bail;
1124 }
1125 } else {
1126 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1127 goto bail;
1128 }
1129 } else {
1130 if (CAP(NOLOGIN)) {
1131 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1132 srvc->user, srvc->host);
1133 goto bail;
1134 }
1135 if (!imap->buf.sock.ssl)
1136 imap_warn("*** IMAP Warning *** Password is being "
1137 "sent in the clear\n");
1138 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1139 fprintf(stderr, "IMAP error: LOGIN failed\n");
1140 goto bail;
1141 }
1142 }
1143 } /* !preauth */
1144
1145 if (cred.username)
1146 credential_approve(&cred);
1147 credential_clear(&cred);
1148
1149 /* check the target mailbox exists */
1150 ctx->name = folder;
1151 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1152 case RESP_OK:
1153 /* ok */
1154 break;
1155 case RESP_BAD:
1156 fprintf(stderr, "IMAP error: could not check mailbox\n");
1157 goto out;
1158 case RESP_NO:
1159 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1160 imap_info("Created missing mailbox\n");
1161 } else {
1162 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1163 goto out;
1164 }
1165 break;
1166 }
1167
1168 ctx->prefix = "";
1169 return ctx;
1170
1171 bail:
1172 if (cred.username)
1173 credential_reject(&cred);
1174 credential_clear(&cred);
1175
1176 out:
1177 imap_close_store(ctx);
1178 return NULL;
1179 }
1180
1181 /*
1182 * Insert CR characters as necessary in *msg to ensure that every LF
1183 * character in *msg is preceded by a CR.
1184 */
1185 static void lf_to_crlf(struct strbuf *msg)
1186 {
1187 char *new;
1188 size_t i, j;
1189 char lastc;
1190
1191 /* First pass: tally, in j, the size of the new string: */
1192 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1193 if (msg->buf[i] == '\n' && lastc != '\r')
1194 j++; /* a CR will need to be added here */
1195 lastc = msg->buf[i];
1196 j++;
1197 }
1198
1199 new = xmallocz(j);
1200
1201 /*
1202 * Second pass: write the new string. Note that this loop is
1203 * otherwise identical to the first pass.
1204 */
1205 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1206 if (msg->buf[i] == '\n' && lastc != '\r')
1207 new[j++] = '\r';
1208 lastc = new[j++] = msg->buf[i];
1209 }
1210 strbuf_attach(msg, new, j, j + 1);
1211 }
1212
1213 /*
1214 * Store msg to IMAP. Also detach and free the data from msg->data,
1215 * leaving msg->data empty.
1216 */
1217 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1218 {
1219 struct imap *imap = ctx->imap;
1220 struct imap_cmd_cb cb;
1221 const char *prefix, *box;
1222 int ret;
1223
1224 lf_to_crlf(msg);
1225 memset(&cb, 0, sizeof(cb));
1226
1227 cb.dlen = msg->len;
1228 cb.data = strbuf_detach(msg, NULL);
1229
1230 box = ctx->name;
1231 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1232 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1233 imap->caps = imap->rcaps;
1234 if (ret != DRV_OK)
1235 return ret;
1236
1237 return DRV_OK;
1238 }
1239
1240 static void wrap_in_html(struct strbuf *msg)
1241 {
1242 struct strbuf buf = STRBUF_INIT;
1243 static char *content_type = "Content-Type: text/html;\n";
1244 static char *pre_open = "<pre>\n";
1245 static char *pre_close = "</pre>\n";
1246 const char *body = strstr(msg->buf, "\n\n");
1247
1248 if (!body)
1249 return; /* Headers but no body; no wrapping needed */
1250
1251 body += 2;
1252
1253 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1254 strbuf_addstr(&buf, content_type);
1255 strbuf_addch(&buf, '\n');
1256 strbuf_addstr(&buf, pre_open);
1257 strbuf_addstr_xml_quoted(&buf, body);
1258 strbuf_addstr(&buf, pre_close);
1259
1260 strbuf_release(msg);
1261 *msg = buf;
1262 }
1263
1264 #define CHUNKSIZE 0x1000
1265
1266 static int read_message(FILE *f, struct strbuf *all_msgs)
1267 {
1268 do {
1269 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1270 break;
1271 } while (!feof(f));
1272
1273 return ferror(f) ? -1 : 0;
1274 }
1275
1276 static int count_messages(struct strbuf *all_msgs)
1277 {
1278 int count = 0;
1279 char *p = all_msgs->buf;
1280
1281 while (1) {
1282 if (starts_with(p, "From ")) {
1283 p = strstr(p+5, "\nFrom: ");
1284 if (!p) break;
1285 p = strstr(p+7, "\nDate: ");
1286 if (!p) break;
1287 p = strstr(p+7, "\nSubject: ");
1288 if (!p) break;
1289 p += 10;
1290 count++;
1291 }
1292 p = strstr(p+5, "\nFrom ");
1293 if (!p)
1294 break;
1295 p++;
1296 }
1297 return count;
1298 }
1299
1300 /*
1301 * Copy the next message from all_msgs, starting at offset *ofs, to
1302 * msg. Update *ofs to the start of the following message. Return
1303 * true iff a message was successfully copied.
1304 */
1305 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1306 {
1307 char *p, *data;
1308 size_t len;
1309
1310 if (*ofs >= all_msgs->len)
1311 return 0;
1312
1313 data = &all_msgs->buf[*ofs];
1314 len = all_msgs->len - *ofs;
1315
1316 if (len < 5 || !starts_with(data, "From "))
1317 return 0;
1318
1319 p = strchr(data, '\n');
1320 if (p) {
1321 p++;
1322 len -= p - data;
1323 *ofs += p - data;
1324 data = p;
1325 }
1326
1327 p = strstr(data, "\nFrom ");
1328 if (p)
1329 len = &p[1] - data;
1330
1331 strbuf_add(msg, data, len);
1332 *ofs += len;
1333 return 1;
1334 }
1335
1336 static void git_imap_config(void)
1337 {
1338 const char *val = NULL;
1339
1340 git_config_get_bool("imap.sslverify", &server.ssl_verify);
1341 git_config_get_bool("imap.preformattedhtml", &server.use_html);
1342 git_config_get_string("imap.folder", &server.folder);
1343
1344 if (!git_config_get_value("imap.host", &val)) {
1345 if (!val) {
1346 git_die_config("imap.host", "Missing value for 'imap.host'");
1347 } else {
1348 if (starts_with(val, "imap:"))
1349 val += 5;
1350 else if (starts_with(val, "imaps:")) {
1351 val += 6;
1352 server.use_ssl = 1;
1353 }
1354 if (starts_with(val, "//"))
1355 val += 2;
1356 server.host = xstrdup(val);
1357 }
1358 }
1359
1360 git_config_get_string("imap.user", &server.user);
1361 git_config_get_string("imap.pass", &server.pass);
1362 git_config_get_int("imap.port", &server.port);
1363 git_config_get_string("imap.tunnel", &server.tunnel);
1364 git_config_get_string("imap.authmethod", &server.auth_method);
1365 }
1366
1367 static int append_msgs_to_imap(struct imap_server_conf *server,
1368 struct strbuf* all_msgs, int total)
1369 {
1370 struct strbuf msg = STRBUF_INIT;
1371 struct imap_store *ctx = NULL;
1372 int ofs = 0;
1373 int r;
1374 int n = 0;
1375
1376 ctx = imap_open_store(server, server->folder);
1377 if (!ctx) {
1378 fprintf(stderr, "failed to open store\n");
1379 return 1;
1380 }
1381 ctx->name = server->folder;
1382
1383 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1384 while (1) {
1385 unsigned percent = n * 100 / total;
1386
1387 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1388
1389 if (!split_msg(all_msgs, &msg, &ofs))
1390 break;
1391 if (server->use_html)
1392 wrap_in_html(&msg);
1393 r = imap_store_msg(ctx, &msg);
1394 if (r != DRV_OK)
1395 break;
1396 n++;
1397 }
1398 fprintf(stderr, "\n");
1399
1400 imap_close_store(ctx);
1401
1402 return 0;
1403 }
1404
1405 #ifdef USE_CURL_FOR_IMAP_SEND
1406 static CURL *setup_curl(struct imap_server_conf *srvc)
1407 {
1408 CURL *curl;
1409 struct strbuf path = STRBUF_INIT;
1410
1411 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1412 die("curl_global_init failed");
1413
1414 curl = curl_easy_init();
1415
1416 if (!curl)
1417 die("curl_easy_init failed");
1418
1419 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1420 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1421
1422 strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
1423 strbuf_addstr(&path, server.host);
1424 if (!path.len || path.buf[path.len - 1] != '/')
1425 strbuf_addch(&path, '/');
1426 strbuf_addstr(&path, server.folder);
1427
1428 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1429 strbuf_release(&path);
1430 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1431
1432 if (server.auth_method) {
1433 #if LIBCURL_VERSION_NUM < 0x072200
1434 warning("No LOGIN_OPTIONS support in this cURL version");
1435 #else
1436 struct strbuf auth = STRBUF_INIT;
1437 strbuf_addstr(&auth, "AUTH=");
1438 strbuf_addstr(&auth, server.auth_method);
1439 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1440 strbuf_release(&auth);
1441 #endif
1442 }
1443
1444 if (!server.use_ssl)
1445 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1446
1447 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1448 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1449
1450 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1451
1452 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1453
1454 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1455 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1456 setup_curl_trace(curl);
1457
1458 return curl;
1459 }
1460
1461 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1462 struct strbuf* all_msgs, int total) {
1463 int ofs = 0;
1464 int n = 0;
1465 struct buffer msgbuf = { STRBUF_INIT, 0 };
1466 CURL *curl;
1467 CURLcode res = CURLE_OK;
1468
1469 curl = setup_curl(server);
1470 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1471
1472 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1473 while (1) {
1474 unsigned percent = n * 100 / total;
1475 int prev_len;
1476
1477 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1478
1479 prev_len = msgbuf.buf.len;
1480 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1481 break;
1482 if (server->use_html)
1483 wrap_in_html(&msgbuf.buf);
1484 lf_to_crlf(&msgbuf.buf);
1485
1486 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1487 (curl_off_t)(msgbuf.buf.len-prev_len));
1488
1489 res = curl_easy_perform(curl);
1490
1491 if(res != CURLE_OK) {
1492 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1493 curl_easy_strerror(res));
1494 break;
1495 }
1496
1497 n++;
1498 }
1499 fprintf(stderr, "\n");
1500
1501 curl_easy_cleanup(curl);
1502 curl_global_cleanup();
1503
1504 return 0;
1505 }
1506 #endif
1507
1508 int cmd_main(int argc, const char **argv)
1509 {
1510 struct strbuf all_msgs = STRBUF_INIT;
1511 int total;
1512 int nongit_ok;
1513
1514 setup_git_directory_gently(&nongit_ok);
1515 git_imap_config();
1516
1517 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1518
1519 if (argc)
1520 usage_with_options(imap_send_usage, imap_send_options);
1521
1522 #ifndef USE_CURL_FOR_IMAP_SEND
1523 if (use_curl) {
1524 warning("--curl not supported in this build");
1525 use_curl = 0;
1526 }
1527 #elif defined(NO_OPENSSL)
1528 if (!use_curl) {
1529 warning("--no-curl not supported in this build");
1530 use_curl = 1;
1531 }
1532 #endif
1533
1534 if (!server.port)
1535 server.port = server.use_ssl ? 993 : 143;
1536
1537 if (!server.folder) {
1538 fprintf(stderr, "no imap store specified\n");
1539 return 1;
1540 }
1541 if (!server.host) {
1542 if (!server.tunnel) {
1543 fprintf(stderr, "no imap host specified\n");
1544 return 1;
1545 }
1546 server.host = "tunnel";
1547 }
1548
1549 /* read the messages */
1550 if (read_message(stdin, &all_msgs)) {
1551 fprintf(stderr, "error reading input\n");
1552 return 1;
1553 }
1554
1555 if (all_msgs.len == 0) {
1556 fprintf(stderr, "nothing to send\n");
1557 return 1;
1558 }
1559
1560 total = count_messages(&all_msgs);
1561 if (!total) {
1562 fprintf(stderr, "no messages to send\n");
1563 return 1;
1564 }
1565
1566 /* write it to the imap server */
1567
1568 if (server.tunnel)
1569 return append_msgs_to_imap(&server, &all_msgs, total);
1570
1571 #ifdef USE_CURL_FOR_IMAP_SEND
1572 if (use_curl)
1573 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1574 #endif
1575
1576 return append_msgs_to_imap(&server, &all_msgs, total);
1577 }
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