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git-cvsserver: protect against NULL in crypt(3)
[git.git] / imap-send.c
bloba0540ba5cf43e5af6c749f8c1bc7b06a7ff222ad
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, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "cache.h"
25 #include "config.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)
38 /* Always default to curl if it's available. */
39 #define USE_CURL_DEFAULT 1
40 #else
41 /* We don't have curl, so continue to use the historical implementation */
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 const char *name;
88 const char *tunnel;
89 const char *host;
90 int port;
91 const char *folder;
92 const char *user;
93 const char *pass;
94 int use_ssl;
95 int ssl_verify;
96 int use_html;
97 const 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 __attribute__((format (printf, 1, 2)))
455 static void imap_info(const char *msg, ...)
456 {
457 va_list va;
458
459 if (0 <= verbosity) {
460 va_start(va, msg);
461 vprintf(msg, va);
462 va_end(va);
463 fflush(stdout);
464 }
465 }
466
467 __attribute__((format (printf, 1, 2)))
468 static void imap_warn(const char *msg, ...)
469 {
470 va_list va;
471
472 if (-2 < verbosity) {
473 va_start(va, msg);
474 vfprintf(stderr, msg, va);
475 va_end(va);
476 }
477 }
478
479 static char *next_arg(char **s)
480 {
481 char *ret;
482
483 if (!s || !*s)
484 return NULL;
485 while (isspace((unsigned char) **s))
486 (*s)++;
487 if (!**s) {
488 *s = NULL;
489 return NULL;
490 }
491 if (**s == '"') {
492 ++*s;
493 ret = *s;
494 *s = strchr(*s, '"');
495 } else {
496 ret = *s;
497 while (**s && !isspace((unsigned char) **s))
498 (*s)++;
499 }
500 if (*s) {
501 if (**s)
502 *(*s)++ = 0;
503 if (!**s)
504 *s = NULL;
505 }
506 return ret;
507 }
508
509 __attribute__((format (printf, 3, 4)))
510 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
511 {
512 int ret;
513 va_list va;
514
515 va_start(va, fmt);
516 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
517 BUG("buffer too small. Please report a bug.");
518 va_end(va);
519 return ret;
520 }
521
522 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
523 struct imap_cmd_cb *cb,
524 const char *fmt, va_list ap)
525 {
526 struct imap *imap = ctx->imap;
527 struct imap_cmd *cmd;
528 int n, bufl;
529 char buf[1024];
530
531 cmd = xmalloc(sizeof(struct imap_cmd));
532 nfvasprintf(&cmd->cmd, fmt, ap);
533 cmd->tag = ++imap->nexttag;
534
535 if (cb)
536 cmd->cb = *cb;
537 else
538 memset(&cmd->cb, 0, sizeof(cmd->cb));
539
540 while (imap->literal_pending)
541 get_cmd_result(ctx, NULL);
542
543 if (!cmd->cb.data)
544 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
545 else
546 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
547 cmd->tag, cmd->cmd, cmd->cb.dlen,
548 CAP(LITERALPLUS) ? "+" : "");
549
550 if (0 < verbosity) {
551 if (imap->num_in_progress)
552 printf("(%d in progress) ", imap->num_in_progress);
553 if (!starts_with(cmd->cmd, "LOGIN"))
554 printf(">>> %s", buf);
555 else
556 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
557 }
558 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
559 free(cmd->cmd);
560 free(cmd);
561 if (cb)
562 free(cb->data);
563 return NULL;
564 }
565 if (cmd->cb.data) {
566 if (CAP(LITERALPLUS)) {
567 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
568 free(cmd->cb.data);
569 if (n != cmd->cb.dlen ||
570 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
571 free(cmd->cmd);
572 free(cmd);
573 return NULL;
574 }
575 cmd->cb.data = NULL;
576 } else
577 imap->literal_pending = 1;
578 } else if (cmd->cb.cont)
579 imap->literal_pending = 1;
580 cmd->next = NULL;
581 *imap->in_progress_append = cmd;
582 imap->in_progress_append = &cmd->next;
583 imap->num_in_progress++;
584 return cmd;
585 }
586
587 __attribute__((format (printf, 3, 4)))
588 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
589 const char *fmt, ...)
590 {
591 va_list ap;
592 struct imap_cmd *cmdp;
593
594 va_start(ap, fmt);
595 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
596 va_end(ap);
597 if (!cmdp)
598 return RESP_BAD;
599
600 return get_cmd_result(ctx, cmdp);
601 }
602
603 __attribute__((format (printf, 3, 4)))
604 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
605 const char *fmt, ...)
606 {
607 va_list ap;
608 struct imap_cmd *cmdp;
609
610 va_start(ap, fmt);
611 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
612 va_end(ap);
613 if (!cmdp)
614 return DRV_STORE_BAD;
615
616 switch (get_cmd_result(ctx, cmdp)) {
617 case RESP_BAD: return DRV_STORE_BAD;
618 case RESP_NO: return DRV_MSG_BAD;
619 default: return DRV_OK;
620 }
621 }
622
623 static int skip_imap_list_l(char **sp, int level)
624 {
625 char *s = *sp;
626
627 for (;;) {
628 while (isspace((unsigned char)*s))
629 s++;
630 if (level && *s == ')') {
631 s++;
632 break;
633 }
634 if (*s == '(') {
635 /* sublist */
636 s++;
637 if (skip_imap_list_l(&s, level + 1))
638 goto bail;
639 } else if (*s == '"') {
640 /* quoted string */
641 s++;
642 for (; *s != '"'; s++)
643 if (!*s)
644 goto bail;
645 s++;
646 } else {
647 /* atom */
648 for (; *s && !isspace((unsigned char)*s); s++)
649 if (level && *s == ')')
650 break;
651 }
652
653 if (!level)
654 break;
655 if (!*s)
656 goto bail;
657 }
658 *sp = s;
659 return 0;
660
661 bail:
662 return -1;
663 }
664
665 static void skip_list(char **sp)
666 {
667 skip_imap_list_l(sp, 0);
668 }
669
670 static void parse_capability(struct imap *imap, char *cmd)
671 {
672 char *arg;
673 unsigned i;
674
675 imap->caps = 0x80000000;
676 while ((arg = next_arg(&cmd)))
677 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
678 if (!strcmp(cap_list[i], arg))
679 imap->caps |= 1 << i;
680 imap->rcaps = imap->caps;
681 }
682
683 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
684 char *s)
685 {
686 struct imap *imap = ctx->imap;
687 char *arg, *p;
688
689 if (!s || *s != '[')
690 return RESP_OK; /* no response code */
691 s++;
692 if (!(p = strchr(s, ']'))) {
693 fprintf(stderr, "IMAP error: malformed response code\n");
694 return RESP_BAD;
695 }
696 *p++ = 0;
697 arg = next_arg(&s);
698 if (!arg) {
699 fprintf(stderr, "IMAP error: empty response code\n");
700 return RESP_BAD;
701 }
702 if (!strcmp("UIDVALIDITY", arg)) {
703 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
704 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
705 return RESP_BAD;
706 }
707 } else if (!strcmp("UIDNEXT", arg)) {
708 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
709 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
710 return RESP_BAD;
711 }
712 } else if (!strcmp("CAPABILITY", arg)) {
713 parse_capability(imap, s);
714 } else if (!strcmp("ALERT", arg)) {
715 /* RFC2060 says that these messages MUST be displayed
716 * to the user
717 */
718 for (; isspace((unsigned char)*p); p++);
719 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
720 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
721 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
722 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
723 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
724 return RESP_BAD;
725 }
726 }
727 return RESP_OK;
728 }
729
730 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
731 {
732 struct imap *imap = ctx->imap;
733 struct imap_cmd *cmdp, **pcmdp;
734 char *cmd;
735 const char *arg, *arg1;
736 int n, resp, resp2, tag;
737
738 for (;;) {
739 if (buffer_gets(&imap->buf, &cmd))
740 return RESP_BAD;
741
742 arg = next_arg(&cmd);
743 if (!arg) {
744 fprintf(stderr, "IMAP error: empty response\n");
745 return RESP_BAD;
746 }
747 if (*arg == '*') {
748 arg = next_arg(&cmd);
749 if (!arg) {
750 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
751 return RESP_BAD;
752 }
753
754 if (!strcmp("NAMESPACE", arg)) {
755 /* rfc2342 NAMESPACE response. */
756 skip_list(&cmd); /* Personal mailboxes */
757 skip_list(&cmd); /* Others' mailboxes */
758 skip_list(&cmd); /* Shared mailboxes */
759 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
760 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
761 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
762 return resp;
763 } else if (!strcmp("CAPABILITY", arg)) {
764 parse_capability(imap, cmd);
765 } else if ((arg1 = next_arg(&cmd))) {
766 ; /*
767 * Unhandled response-data with at least two words.
768 * Ignore it.
769 *
770 * NEEDSWORK: Previously this case handled '<num> EXISTS'
771 * and '<num> RECENT' but as a probably-unintended side
772 * effect it ignores other unrecognized two-word
773 * responses. imap-send doesn't ever try to read
774 * messages or mailboxes these days, so consider
775 * eliminating this case.
776 */
777 } else {
778 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
779 return RESP_BAD;
780 }
781 } else if (!imap->in_progress) {
782 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
783 return RESP_BAD;
784 } else if (*arg == '+') {
785 /* This can happen only with the last command underway, as
786 it enforces a round-trip. */
787 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
788 offsetof(struct imap_cmd, next));
789 if (cmdp->cb.data) {
790 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
791 FREE_AND_NULL(cmdp->cb.data);
792 if (n != (int)cmdp->cb.dlen)
793 return RESP_BAD;
794 } else if (cmdp->cb.cont) {
795 if (cmdp->cb.cont(ctx, cmdp, cmd))
796 return RESP_BAD;
797 } else {
798 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
799 return RESP_BAD;
800 }
801 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
802 return RESP_BAD;
803 if (!cmdp->cb.cont)
804 imap->literal_pending = 0;
805 if (!tcmd)
806 return DRV_OK;
807 } else {
808 tag = atoi(arg);
809 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
810 if (cmdp->tag == tag)
811 goto gottag;
812 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
813 return RESP_BAD;
814 gottag:
815 if (!(*pcmdp = cmdp->next))
816 imap->in_progress_append = pcmdp;
817 imap->num_in_progress--;
818 if (cmdp->cb.cont || cmdp->cb.data)
819 imap->literal_pending = 0;
820 arg = next_arg(&cmd);
821 if (!arg)
822 arg = "";
823 if (!strcmp("OK", arg))
824 resp = DRV_OK;
825 else {
826 if (!strcmp("NO", arg))
827 resp = RESP_NO;
828 else /*if (!strcmp("BAD", arg))*/
829 resp = RESP_BAD;
830 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
831 !starts_with(cmdp->cmd, "LOGIN") ?
832 cmdp->cmd : "LOGIN <user> <pass>",
833 arg, cmd ? cmd : "");
834 }
835 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
836 resp = resp2;
837 if (cmdp->cb.done)
838 cmdp->cb.done(ctx, cmdp, resp);
839 free(cmdp->cb.data);
840 free(cmdp->cmd);
841 free(cmdp);
842 if (!tcmd || tcmd == cmdp)
843 return resp;
844 }
845 }
846 /* not reached */
847 }
848
849 static void imap_close_server(struct imap_store *ictx)
850 {
851 struct imap *imap = ictx->imap;
852
853 if (imap->buf.sock.fd[0] != -1) {
854 imap_exec(ictx, NULL, "LOGOUT");
855 socket_shutdown(&imap->buf.sock);
856 }
857 free(imap);
858 }
859
860 static void imap_close_store(struct imap_store *ctx)
861 {
862 imap_close_server(ctx);
863 free(ctx);
864 }
865
866 #ifndef NO_OPENSSL
867
868 /*
869 * hexchar() and cram() functions are based on the code from the isync
870 * project (http://isync.sf.net/).
871 */
872 static char hexchar(unsigned int b)
873 {
874 return b < 10 ? '0' + b : 'a' + (b - 10);
875 }
876
877 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
878 static char *cram(const char *challenge_64, const char *user, const char *pass)
879 {
880 int i, resp_len, encoded_len, decoded_len;
881 unsigned char hash[16];
882 char hex[33];
883 char *response, *response_64, *challenge;
884
885 /*
886 * length of challenge_64 (i.e. base-64 encoded string) is a good
887 * enough upper bound for challenge (decoded result).
888 */
889 encoded_len = strlen(challenge_64);
890 challenge = xmalloc(encoded_len);
891 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
892 (unsigned char *)challenge_64, encoded_len);
893 if (decoded_len < 0)
894 die("invalid challenge %s", challenge_64);
895 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
896 die("HMAC error");
897
898 hex[32] = 0;
899 for (i = 0; i < 16; i++) {
900 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
901 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
902 }
903
904 /* response: "<user> <digest in hex>" */
905 response = xstrfmt("%s %s", user, hex);
906 resp_len = strlen(response);
907
908 response_64 = xmallocz(ENCODED_SIZE(resp_len));
909 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
910 (unsigned char *)response, resp_len);
911 if (encoded_len < 0)
912 die("EVP_EncodeBlock error");
913 return (char *)response_64;
914 }
915
916 #else
917
918 static char *cram(const char *challenge_64, const char *user, const char *pass)
919 {
920 die("If you want to use CRAM-MD5 authenticate method, "
921 "you have to build git-imap-send with OpenSSL library.");
922 }
923
924 #endif
925
926 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
927 {
928 int ret;
929 char *response;
930
931 response = cram(prompt, server.user, server.pass);
932
933 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
934 if (ret != strlen(response))
935 return error("IMAP error: sending response failed");
936
937 free(response);
938
939 return 0;
940 }
941
942 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
943 {
944 if (srvc->user && srvc->pass)
945 return;
946
947 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
948 cred->host = xstrdup(srvc->host);
949
950 cred->username = xstrdup_or_null(srvc->user);
951 cred->password = xstrdup_or_null(srvc->pass);
952
953 credential_fill(cred);
954
955 if (!srvc->user)
956 srvc->user = xstrdup(cred->username);
957 if (!srvc->pass)
958 srvc->pass = xstrdup(cred->password);
959 }
960
961 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, const char *folder)
962 {
963 struct credential cred = CREDENTIAL_INIT;
964 struct imap_store *ctx;
965 struct imap *imap;
966 char *arg, *rsp;
967 int s = -1, preauth;
968
969 CALLOC_ARRAY(ctx, 1);
970
971 ctx->imap = CALLOC_ARRAY(imap, 1);
972 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
973 imap->in_progress_append = &imap->in_progress;
974
975 /* open connection to IMAP server */
976
977 if (srvc->tunnel) {
978 struct child_process tunnel = CHILD_PROCESS_INIT;
979
980 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
981
982 strvec_push(&tunnel.args, srvc->tunnel);
983 tunnel.use_shell = 1;
984 tunnel.in = -1;
985 tunnel.out = -1;
986 if (start_command(&tunnel))
987 die("cannot start proxy %s", srvc->tunnel);
988
989 imap->buf.sock.fd[0] = tunnel.out;
990 imap->buf.sock.fd[1] = tunnel.in;
991
992 imap_info("ok\n");
993 } else {
994 #ifndef NO_IPV6
995 struct addrinfo hints, *ai0, *ai;
996 int gai;
997 char portstr[6];
998
999 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
1000
1001 memset(&hints, 0, sizeof(hints));
1002 hints.ai_socktype = SOCK_STREAM;
1003 hints.ai_protocol = IPPROTO_TCP;
1004
1005 imap_info("Resolving %s... ", srvc->host);
1006 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
1007 if (gai) {
1008 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
1009 goto bail;
1010 }
1011 imap_info("ok\n");
1012
1013 for (ai0 = ai; ai; ai = ai->ai_next) {
1014 char addr[NI_MAXHOST];
1015
1016 s = socket(ai->ai_family, ai->ai_socktype,
1017 ai->ai_protocol);
1018 if (s < 0)
1019 continue;
1020
1021 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1022 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1023 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1024
1025 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1026 close(s);
1027 s = -1;
1028 perror("connect");
1029 continue;
1030 }
1031
1032 break;
1033 }
1034 freeaddrinfo(ai0);
1035 #else /* NO_IPV6 */
1036 struct hostent *he;
1037 struct sockaddr_in addr;
1038
1039 memset(&addr, 0, sizeof(addr));
1040 addr.sin_port = htons(srvc->port);
1041 addr.sin_family = AF_INET;
1042
1043 imap_info("Resolving %s... ", srvc->host);
1044 he = gethostbyname(srvc->host);
1045 if (!he) {
1046 perror("gethostbyname");
1047 goto bail;
1048 }
1049 imap_info("ok\n");
1050
1051 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1052
1053 s = socket(PF_INET, SOCK_STREAM, 0);
1054
1055 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1056 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1057 close(s);
1058 s = -1;
1059 perror("connect");
1060 }
1061 #endif
1062 if (s < 0) {
1063 fputs("Error: unable to connect to server.\n", stderr);
1064 goto bail;
1065 }
1066
1067 imap->buf.sock.fd[0] = s;
1068 imap->buf.sock.fd[1] = dup(s);
1069
1070 if (srvc->use_ssl &&
1071 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1072 close(s);
1073 goto bail;
1074 }
1075 imap_info("ok\n");
1076 }
1077
1078 /* read the greeting string */
1079 if (buffer_gets(&imap->buf, &rsp)) {
1080 fprintf(stderr, "IMAP error: no greeting response\n");
1081 goto bail;
1082 }
1083 arg = next_arg(&rsp);
1084 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1085 fprintf(stderr, "IMAP error: invalid greeting response\n");
1086 goto bail;
1087 }
1088 preauth = 0;
1089 if (!strcmp("PREAUTH", arg))
1090 preauth = 1;
1091 else if (strcmp("OK", arg) != 0) {
1092 fprintf(stderr, "IMAP error: unknown greeting response\n");
1093 goto bail;
1094 }
1095 parse_response_code(ctx, NULL, rsp);
1096 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1097 goto bail;
1098
1099 if (!preauth) {
1100 #ifndef NO_OPENSSL
1101 if (!srvc->use_ssl && CAP(STARTTLS)) {
1102 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1103 goto bail;
1104 if (ssl_socket_connect(&imap->buf.sock, 1,
1105 srvc->ssl_verify))
1106 goto bail;
1107 /* capabilities may have changed, so get the new capabilities */
1108 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1109 goto bail;
1110 }
1111 #endif
1112 imap_info("Logging in...\n");
1113 server_fill_credential(srvc, &cred);
1114
1115 if (srvc->auth_method) {
1116 struct imap_cmd_cb cb;
1117
1118 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1119 if (!CAP(AUTH_CRAM_MD5)) {
1120 fprintf(stderr, "You specified "
1121 "CRAM-MD5 as authentication method, "
1122 "but %s doesn't support it.\n", srvc->host);
1123 goto bail;
1124 }
1125 /* CRAM-MD5 */
1126
1127 memset(&cb, 0, sizeof(cb));
1128 cb.cont = auth_cram_md5;
1129 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1130 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1131 goto bail;
1132 }
1133 } else {
1134 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1135 goto bail;
1136 }
1137 } else {
1138 if (CAP(NOLOGIN)) {
1139 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1140 srvc->user, srvc->host);
1141 goto bail;
1142 }
1143 if (!imap->buf.sock.ssl)
1144 imap_warn("*** IMAP Warning *** Password is being "
1145 "sent in the clear\n");
1146 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1147 fprintf(stderr, "IMAP error: LOGIN failed\n");
1148 goto bail;
1149 }
1150 }
1151 } /* !preauth */
1152
1153 if (cred.username)
1154 credential_approve(&cred);
1155 credential_clear(&cred);
1156
1157 /* check the target mailbox exists */
1158 ctx->name = folder;
1159 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1160 case RESP_OK:
1161 /* ok */
1162 break;
1163 case RESP_BAD:
1164 fprintf(stderr, "IMAP error: could not check mailbox\n");
1165 goto out;
1166 case RESP_NO:
1167 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1168 imap_info("Created missing mailbox\n");
1169 } else {
1170 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1171 goto out;
1172 }
1173 break;
1174 }
1175
1176 ctx->prefix = "";
1177 return ctx;
1178
1179 bail:
1180 if (cred.username)
1181 credential_reject(&cred);
1182 credential_clear(&cred);
1183
1184 out:
1185 imap_close_store(ctx);
1186 return NULL;
1187 }
1188
1189 /*
1190 * Insert CR characters as necessary in *msg to ensure that every LF
1191 * character in *msg is preceded by a CR.
1192 */
1193 static void lf_to_crlf(struct strbuf *msg)
1194 {
1195 char *new_msg;
1196 size_t i, j;
1197 char lastc;
1198
1199 /* First pass: tally, in j, the size of the new_msg string: */
1200 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1201 if (msg->buf[i] == '\n' && lastc != '\r')
1202 j++; /* a CR will need to be added here */
1203 lastc = msg->buf[i];
1204 j++;
1205 }
1206
1207 new_msg = xmallocz(j);
1208
1209 /*
1210 * Second pass: write the new_msg string. Note that this loop is
1211 * otherwise identical to the first pass.
1212 */
1213 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1214 if (msg->buf[i] == '\n' && lastc != '\r')
1215 new_msg[j++] = '\r';
1216 lastc = new_msg[j++] = msg->buf[i];
1217 }
1218 strbuf_attach(msg, new_msg, j, j + 1);
1219 }
1220
1221 /*
1222 * Store msg to IMAP. Also detach and free the data from msg->data,
1223 * leaving msg->data empty.
1224 */
1225 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1226 {
1227 struct imap *imap = ctx->imap;
1228 struct imap_cmd_cb cb;
1229 const char *prefix, *box;
1230 int ret;
1231
1232 lf_to_crlf(msg);
1233 memset(&cb, 0, sizeof(cb));
1234
1235 cb.dlen = msg->len;
1236 cb.data = strbuf_detach(msg, NULL);
1237
1238 box = ctx->name;
1239 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1240 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1241 imap->caps = imap->rcaps;
1242 if (ret != DRV_OK)
1243 return ret;
1244
1245 return DRV_OK;
1246 }
1247
1248 static void wrap_in_html(struct strbuf *msg)
1249 {
1250 struct strbuf buf = STRBUF_INIT;
1251 static char *content_type = "Content-Type: text/html;\n";
1252 static char *pre_open = "<pre>\n";
1253 static char *pre_close = "</pre>\n";
1254 const char *body = strstr(msg->buf, "\n\n");
1255
1256 if (!body)
1257 return; /* Headers but no body; no wrapping needed */
1258
1259 body += 2;
1260
1261 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1262 strbuf_addstr(&buf, content_type);
1263 strbuf_addch(&buf, '\n');
1264 strbuf_addstr(&buf, pre_open);
1265 strbuf_addstr_xml_quoted(&buf, body);
1266 strbuf_addstr(&buf, pre_close);
1267
1268 strbuf_release(msg);
1269 *msg = buf;
1270 }
1271
1272 static int count_messages(struct strbuf *all_msgs)
1273 {
1274 int count = 0;
1275 char *p = all_msgs->buf;
1276
1277 while (1) {
1278 if (starts_with(p, "From ")) {
1279 p = strstr(p+5, "\nFrom: ");
1280 if (!p) break;
1281 p = strstr(p+7, "\nDate: ");
1282 if (!p) break;
1283 p = strstr(p+7, "\nSubject: ");
1284 if (!p) break;
1285 p += 10;
1286 count++;
1287 }
1288 p = strstr(p+5, "\nFrom ");
1289 if (!p)
1290 break;
1291 p++;
1292 }
1293 return count;
1294 }
1295
1296 /*
1297 * Copy the next message from all_msgs, starting at offset *ofs, to
1298 * msg. Update *ofs to the start of the following message. Return
1299 * true iff a message was successfully copied.
1300 */
1301 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1302 {
1303 char *p, *data;
1304 size_t len;
1305
1306 if (*ofs >= all_msgs->len)
1307 return 0;
1308
1309 data = &all_msgs->buf[*ofs];
1310 len = all_msgs->len - *ofs;
1311
1312 if (len < 5 || !starts_with(data, "From "))
1313 return 0;
1314
1315 p = strchr(data, '\n');
1316 if (p) {
1317 p++;
1318 len -= p - data;
1319 *ofs += p - data;
1320 data = p;
1321 }
1322
1323 p = strstr(data, "\nFrom ");
1324 if (p)
1325 len = &p[1] - data;
1326
1327 strbuf_add(msg, data, len);
1328 *ofs += len;
1329 return 1;
1330 }
1331
1332 static int git_imap_config(const char *var, const char *val, void *cb)
1333 {
1334
1335 if (!strcmp("imap.sslverify", var))
1336 server.ssl_verify = git_config_bool(var, val);
1337 else if (!strcmp("imap.preformattedhtml", var))
1338 server.use_html = git_config_bool(var, val);
1339 else if (!strcmp("imap.folder", var))
1340 return git_config_string(&server.folder, var, val);
1341 else if (!strcmp("imap.user", var))
1342 return git_config_string(&server.user, var, val);
1343 else if (!strcmp("imap.pass", var))
1344 return git_config_string(&server.pass, var, val);
1345 else if (!strcmp("imap.tunnel", var))
1346 return git_config_string(&server.tunnel, var, val);
1347 else if (!strcmp("imap.authmethod", var))
1348 return git_config_string(&server.auth_method, var, val);
1349 else if (!strcmp("imap.port", var))
1350 server.port = git_config_int(var, val);
1351 else if (!strcmp("imap.host", var)) {
1352 if (!val) {
1353 git_die_config("imap.host", "Missing value for 'imap.host'");
1354 } else {
1355 if (starts_with(val, "imap:"))
1356 val += 5;
1357 else if (starts_with(val, "imaps:")) {
1358 val += 6;
1359 server.use_ssl = 1;
1360 }
1361 if (starts_with(val, "//"))
1362 val += 2;
1363 server.host = xstrdup(val);
1364 }
1365 } else
1366 return git_default_config(var, val, cb);
1367
1368 return 0;
1369 }
1370
1371 static int append_msgs_to_imap(struct imap_server_conf *server,
1372 struct strbuf* all_msgs, int total)
1373 {
1374 struct strbuf msg = STRBUF_INIT;
1375 struct imap_store *ctx = NULL;
1376 int ofs = 0;
1377 int r;
1378 int n = 0;
1379
1380 ctx = imap_open_store(server, server->folder);
1381 if (!ctx) {
1382 fprintf(stderr, "failed to open store\n");
1383 return 1;
1384 }
1385 ctx->name = server->folder;
1386
1387 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1388 while (1) {
1389 unsigned percent = n * 100 / total;
1390
1391 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1392
1393 if (!split_msg(all_msgs, &msg, &ofs))
1394 break;
1395 if (server->use_html)
1396 wrap_in_html(&msg);
1397 r = imap_store_msg(ctx, &msg);
1398 if (r != DRV_OK)
1399 break;
1400 n++;
1401 }
1402 fprintf(stderr, "\n");
1403
1404 imap_close_store(ctx);
1405
1406 return 0;
1407 }
1408
1409 #ifdef USE_CURL_FOR_IMAP_SEND
1410 static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
1411 {
1412 CURL *curl;
1413 struct strbuf path = STRBUF_INIT;
1414 char *uri_encoded_folder;
1415
1416 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1417 die("curl_global_init failed");
1418
1419 curl = curl_easy_init();
1420
1421 if (!curl)
1422 die("curl_easy_init failed");
1423
1424 server_fill_credential(&server, cred);
1425 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1426 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1427
1428 strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
1429 strbuf_addstr(&path, server.host);
1430 if (!path.len || path.buf[path.len - 1] != '/')
1431 strbuf_addch(&path, '/');
1432
1433 uri_encoded_folder = curl_easy_escape(curl, server.folder, 0);
1434 if (!uri_encoded_folder)
1435 die("failed to encode server folder");
1436 strbuf_addstr(&path, uri_encoded_folder);
1437 curl_free(uri_encoded_folder);
1438
1439 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1440 strbuf_release(&path);
1441 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1442
1443 if (server.auth_method) {
1444 #if LIBCURL_VERSION_NUM < 0x072200
1445 warning("No LOGIN_OPTIONS support in this cURL version");
1446 #else
1447 struct strbuf auth = STRBUF_INIT;
1448 strbuf_addstr(&auth, "AUTH=");
1449 strbuf_addstr(&auth, server.auth_method);
1450 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1451 strbuf_release(&auth);
1452 #endif
1453 }
1454
1455 if (!server.use_ssl)
1456 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1457
1458 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1459 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1460
1461 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1462
1463 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1464
1465 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1466 http_trace_curl_no_data();
1467 setup_curl_trace(curl);
1468
1469 return curl;
1470 }
1471
1472 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1473 struct strbuf* all_msgs, int total)
1474 {
1475 int ofs = 0;
1476 int n = 0;
1477 struct buffer msgbuf = { STRBUF_INIT, 0 };
1478 CURL *curl;
1479 CURLcode res = CURLE_OK;
1480 struct credential cred = CREDENTIAL_INIT;
1481
1482 curl = setup_curl(server, &cred);
1483 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1484
1485 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1486 while (1) {
1487 unsigned percent = n * 100 / total;
1488 int prev_len;
1489
1490 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1491
1492 prev_len = msgbuf.buf.len;
1493 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1494 break;
1495 if (server->use_html)
1496 wrap_in_html(&msgbuf.buf);
1497 lf_to_crlf(&msgbuf.buf);
1498
1499 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1500 (curl_off_t)(msgbuf.buf.len-prev_len));
1501
1502 res = curl_easy_perform(curl);
1503
1504 if(res != CURLE_OK) {
1505 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1506 curl_easy_strerror(res));
1507 break;
1508 }
1509
1510 n++;
1511 }
1512 fprintf(stderr, "\n");
1513
1514 curl_easy_cleanup(curl);
1515 curl_global_cleanup();
1516
1517 if (cred.username) {
1518 if (res == CURLE_OK)
1519 credential_approve(&cred);
1520 #if LIBCURL_VERSION_NUM >= 0x070d01
1521 else if (res == CURLE_LOGIN_DENIED)
1522 #else
1523 else
1524 #endif
1525 credential_reject(&cred);
1526 }
1527
1528 credential_clear(&cred);
1529
1530 return res != CURLE_OK;
1531 }
1532 #endif
1533
1534 int cmd_main(int argc, const char **argv)
1535 {
1536 struct strbuf all_msgs = STRBUF_INIT;
1537 int total;
1538 int nongit_ok;
1539
1540 setup_git_directory_gently(&nongit_ok);
1541 git_config(git_imap_config, NULL);
1542
1543 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1544
1545 if (argc)
1546 usage_with_options(imap_send_usage, imap_send_options);
1547
1548 #ifndef USE_CURL_FOR_IMAP_SEND
1549 if (use_curl) {
1550 warning("--curl not supported in this build");
1551 use_curl = 0;
1552 }
1553 #elif defined(NO_OPENSSL)
1554 if (!use_curl) {
1555 warning("--no-curl not supported in this build");
1556 use_curl = 1;
1557 }
1558 #endif
1559
1560 if (!server.port)
1561 server.port = server.use_ssl ? 993 : 143;
1562
1563 if (!server.folder) {
1564 fprintf(stderr, "no imap store specified\n");
1565 return 1;
1566 }
1567 if (!server.host) {
1568 if (!server.tunnel) {
1569 fprintf(stderr, "no imap host specified\n");
1570 return 1;
1571 }
1572 server.host = "tunnel";
1573 }
1574
1575 /* read the messages */
1576 if (strbuf_read(&all_msgs, 0, 0) < 0) {
1577 error_errno(_("could not read from stdin"));
1578 return 1;
1579 }
1580
1581 if (all_msgs.len == 0) {
1582 fprintf(stderr, "nothing to send\n");
1583 return 1;
1584 }
1585
1586 total = count_messages(&all_msgs);
1587 if (!total) {
1588 fprintf(stderr, "no messages to send\n");
1589 return 1;
1590 }
1591
1592 /* write it to the imap server */
1593
1594 if (server.tunnel)
1595 return append_msgs_to_imap(&server, &all_msgs, total);
1596
1597 #ifdef USE_CURL_FOR_IMAP_SEND
1598 if (use_curl)
1599 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1600 #endif
1601
1602 return append_msgs_to_imap(&server, &all_msgs, total);
1603 }
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