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hashfile: allow skipping the hash function
[git/debian.git] / imap-send.c
bloba50af56b827033dc68923e038566e7718fb81a65
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 #if defined(NO_OPENSSL) && !defined(HAVE_OPENSSL_CSPRNG)
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 .ssl_verify = 1,
102 };
103
104 struct imap_socket {
105 int fd[2];
106 SSL *ssl;
107 };
108
109 struct imap_buffer {
110 struct imap_socket sock;
111 int bytes;
112 int offset;
113 char buf[1024];
114 };
115
116 struct imap_cmd;
117
118 struct imap {
119 int uidnext; /* from SELECT responses */
120 unsigned caps, rcaps; /* CAPABILITY results */
121 /* command queue */
122 int nexttag, num_in_progress, literal_pending;
123 struct imap_cmd *in_progress, **in_progress_append;
124 struct imap_buffer buf; /* this is BIG, so put it last */
125 };
126
127 struct imap_store {
128 /* currently open mailbox */
129 const char *name; /* foreign! maybe preset? */
130 int uidvalidity;
131 struct imap *imap;
132 const char *prefix;
133 };
134
135 struct imap_cmd_cb {
136 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
137 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
138 void *ctx;
139 char *data;
140 int dlen;
141 int uid;
142 };
143
144 struct imap_cmd {
145 struct imap_cmd *next;
146 struct imap_cmd_cb cb;
147 char *cmd;
148 int tag;
149 };
150
151 #define CAP(cap) (imap->caps & (1 << (cap)))
152
153 enum CAPABILITY {
154 NOLOGIN = 0,
155 UIDPLUS,
156 LITERALPLUS,
157 NAMESPACE,
158 STARTTLS,
159 AUTH_CRAM_MD5
160 };
161
162 static const char *cap_list[] = {
163 "LOGINDISABLED",
164 "UIDPLUS",
165 "LITERAL+",
166 "NAMESPACE",
167 "STARTTLS",
168 "AUTH=CRAM-MD5",
169 };
170
171 #define RESP_OK 0
172 #define RESP_NO 1
173 #define RESP_BAD 2
174
175 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
176
177
178 #ifndef NO_OPENSSL
179 static void ssl_socket_perror(const char *func)
180 {
181 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
182 }
183 #endif
184
185 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
186 {
187 #ifndef NO_OPENSSL
188 if (sock->ssl) {
189 int sslerr = SSL_get_error(sock->ssl, ret);
190 switch (sslerr) {
191 case SSL_ERROR_NONE:
192 break;
193 case SSL_ERROR_SYSCALL:
194 perror("SSL_connect");
195 break;
196 default:
197 ssl_socket_perror("SSL_connect");
198 break;
199 }
200 } else
201 #endif
202 {
203 if (ret < 0)
204 perror(func);
205 else
206 fprintf(stderr, "%s: unexpected EOF\n", func);
207 }
208 }
209
210 #ifdef NO_OPENSSL
211 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
212 {
213 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
214 return -1;
215 }
216
217 #else
218
219 static int host_matches(const char *host, const char *pattern)
220 {
221 if (pattern[0] == '*' && pattern[1] == '.') {
222 pattern += 2;
223 if (!(host = strchr(host, '.')))
224 return 0;
225 host++;
226 }
227
228 return *host && *pattern && !strcasecmp(host, pattern);
229 }
230
231 static int verify_hostname(X509 *cert, const char *hostname)
232 {
233 int len;
234 X509_NAME *subj;
235 char cname[1000];
236 int i, found;
237 STACK_OF(GENERAL_NAME) *subj_alt_names;
238
239 /* try the DNS subjectAltNames */
240 found = 0;
241 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
242 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
243 for (i = 0; !found && i < num_subj_alt_names; i++) {
244 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
245 if (subj_alt_name->type == GEN_DNS &&
246 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
247 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
248 found = 1;
249 }
250 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
251 }
252 if (found)
253 return 0;
254
255 /* try the common name */
256 if (!(subj = X509_get_subject_name(cert)))
257 return error("cannot get certificate subject");
258 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
259 return error("cannot get certificate common name");
260 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
261 return 0;
262 return error("certificate owner '%s' does not match hostname '%s'",
263 cname, hostname);
264 }
265
266 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
267 {
268 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
269 const SSL_METHOD *meth;
270 #else
271 SSL_METHOD *meth;
272 #endif
273 SSL_CTX *ctx;
274 int ret;
275 X509 *cert;
276
277 SSL_library_init();
278 SSL_load_error_strings();
279
280 meth = SSLv23_method();
281 if (!meth) {
282 ssl_socket_perror("SSLv23_method");
283 return -1;
284 }
285
286 ctx = SSL_CTX_new(meth);
287 if (!ctx) {
288 ssl_socket_perror("SSL_CTX_new");
289 return -1;
290 }
291
292 if (use_tls_only)
293 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
294
295 if (verify)
296 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
297
298 if (!SSL_CTX_set_default_verify_paths(ctx)) {
299 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
300 return -1;
301 }
302 sock->ssl = SSL_new(ctx);
303 if (!sock->ssl) {
304 ssl_socket_perror("SSL_new");
305 return -1;
306 }
307 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
308 ssl_socket_perror("SSL_set_rfd");
309 return -1;
310 }
311 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
312 ssl_socket_perror("SSL_set_wfd");
313 return -1;
314 }
315
316 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
317 /*
318 * SNI (RFC4366)
319 * OpenSSL does not document this function, but the implementation
320 * returns 1 on success, 0 on failure after calling SSLerr().
321 */
322 ret = SSL_set_tlsext_host_name(sock->ssl, server.host);
323 if (ret != 1)
324 warning("SSL_set_tlsext_host_name(%s) failed.", server.host);
325 #endif
326
327 ret = SSL_connect(sock->ssl);
328 if (ret <= 0) {
329 socket_perror("SSL_connect", sock, ret);
330 return -1;
331 }
332
333 if (verify) {
334 /* make sure the hostname matches that of the certificate */
335 cert = SSL_get_peer_certificate(sock->ssl);
336 if (!cert)
337 return error("unable to get peer certificate.");
338 if (verify_hostname(cert, server.host) < 0)
339 return -1;
340 }
341
342 return 0;
343 }
344 #endif
345
346 static int socket_read(struct imap_socket *sock, char *buf, int len)
347 {
348 ssize_t n;
349 #ifndef NO_OPENSSL
350 if (sock->ssl)
351 n = SSL_read(sock->ssl, buf, len);
352 else
353 #endif
354 n = xread(sock->fd[0], buf, len);
355 if (n <= 0) {
356 socket_perror("read", sock, n);
357 close(sock->fd[0]);
358 close(sock->fd[1]);
359 sock->fd[0] = sock->fd[1] = -1;
360 }
361 return n;
362 }
363
364 static int socket_write(struct imap_socket *sock, const char *buf, int len)
365 {
366 int n;
367 #ifndef NO_OPENSSL
368 if (sock->ssl)
369 n = SSL_write(sock->ssl, buf, len);
370 else
371 #endif
372 n = write_in_full(sock->fd[1], buf, len);
373 if (n != len) {
374 socket_perror("write", sock, n);
375 close(sock->fd[0]);
376 close(sock->fd[1]);
377 sock->fd[0] = sock->fd[1] = -1;
378 }
379 return n;
380 }
381
382 static void socket_shutdown(struct imap_socket *sock)
383 {
384 #ifndef NO_OPENSSL
385 if (sock->ssl) {
386 SSL_shutdown(sock->ssl);
387 SSL_free(sock->ssl);
388 }
389 #endif
390 close(sock->fd[0]);
391 close(sock->fd[1]);
392 }
393
394 /* simple line buffering */
395 static int buffer_gets(struct imap_buffer *b, char **s)
396 {
397 int n;
398 int start = b->offset;
399
400 *s = b->buf + start;
401
402 for (;;) {
403 /* make sure we have enough data to read the \r\n sequence */
404 if (b->offset + 1 >= b->bytes) {
405 if (start) {
406 /* shift down used bytes */
407 *s = b->buf;
408
409 assert(start <= b->bytes);
410 n = b->bytes - start;
411
412 if (n)
413 memmove(b->buf, b->buf + start, n);
414 b->offset -= start;
415 b->bytes = n;
416 start = 0;
417 }
418
419 n = socket_read(&b->sock, b->buf + b->bytes,
420 sizeof(b->buf) - b->bytes);
421
422 if (n <= 0)
423 return -1;
424
425 b->bytes += n;
426 }
427
428 if (b->buf[b->offset] == '\r') {
429 assert(b->offset + 1 < b->bytes);
430 if (b->buf[b->offset + 1] == '\n') {
431 b->buf[b->offset] = 0; /* terminate the string */
432 b->offset += 2; /* next line */
433 if (0 < verbosity)
434 puts(*s);
435 return 0;
436 }
437 }
438
439 b->offset++;
440 }
441 /* not reached */
442 }
443
444 __attribute__((format (printf, 1, 2)))
445 static void imap_info(const char *msg, ...)
446 {
447 va_list va;
448
449 if (0 <= verbosity) {
450 va_start(va, msg);
451 vprintf(msg, va);
452 va_end(va);
453 fflush(stdout);
454 }
455 }
456
457 __attribute__((format (printf, 1, 2)))
458 static void imap_warn(const char *msg, ...)
459 {
460 va_list va;
461
462 if (-2 < verbosity) {
463 va_start(va, msg);
464 vfprintf(stderr, msg, va);
465 va_end(va);
466 }
467 }
468
469 static char *next_arg(char **s)
470 {
471 char *ret;
472
473 if (!s || !*s)
474 return NULL;
475 while (isspace((unsigned char) **s))
476 (*s)++;
477 if (!**s) {
478 *s = NULL;
479 return NULL;
480 }
481 if (**s == '"') {
482 ++*s;
483 ret = *s;
484 *s = strchr(*s, '"');
485 } else {
486 ret = *s;
487 while (**s && !isspace((unsigned char) **s))
488 (*s)++;
489 }
490 if (*s) {
491 if (**s)
492 *(*s)++ = 0;
493 if (!**s)
494 *s = NULL;
495 }
496 return ret;
497 }
498
499 __attribute__((format (printf, 3, 4)))
500 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
501 {
502 int ret;
503 va_list va;
504
505 va_start(va, fmt);
506 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
507 BUG("buffer too small. Please report a bug.");
508 va_end(va);
509 return ret;
510 }
511
512 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
513 struct imap_cmd_cb *cb,
514 const char *fmt, va_list ap)
515 {
516 struct imap *imap = ctx->imap;
517 struct imap_cmd *cmd;
518 int n, bufl;
519 char buf[1024];
520
521 cmd = xmalloc(sizeof(struct imap_cmd));
522 nfvasprintf(&cmd->cmd, fmt, ap);
523 cmd->tag = ++imap->nexttag;
524
525 if (cb)
526 cmd->cb = *cb;
527 else
528 memset(&cmd->cb, 0, sizeof(cmd->cb));
529
530 while (imap->literal_pending)
531 get_cmd_result(ctx, NULL);
532
533 if (!cmd->cb.data)
534 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
535 else
536 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
537 cmd->tag, cmd->cmd, cmd->cb.dlen,
538 CAP(LITERALPLUS) ? "+" : "");
539
540 if (0 < verbosity) {
541 if (imap->num_in_progress)
542 printf("(%d in progress) ", imap->num_in_progress);
543 if (!starts_with(cmd->cmd, "LOGIN"))
544 printf(">>> %s", buf);
545 else
546 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
547 }
548 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
549 free(cmd->cmd);
550 free(cmd);
551 if (cb)
552 free(cb->data);
553 return NULL;
554 }
555 if (cmd->cb.data) {
556 if (CAP(LITERALPLUS)) {
557 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
558 free(cmd->cb.data);
559 if (n != cmd->cb.dlen ||
560 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
561 free(cmd->cmd);
562 free(cmd);
563 return NULL;
564 }
565 cmd->cb.data = NULL;
566 } else
567 imap->literal_pending = 1;
568 } else if (cmd->cb.cont)
569 imap->literal_pending = 1;
570 cmd->next = NULL;
571 *imap->in_progress_append = cmd;
572 imap->in_progress_append = &cmd->next;
573 imap->num_in_progress++;
574 return cmd;
575 }
576
577 __attribute__((format (printf, 3, 4)))
578 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
579 const char *fmt, ...)
580 {
581 va_list ap;
582 struct imap_cmd *cmdp;
583
584 va_start(ap, fmt);
585 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
586 va_end(ap);
587 if (!cmdp)
588 return RESP_BAD;
589
590 return get_cmd_result(ctx, cmdp);
591 }
592
593 __attribute__((format (printf, 3, 4)))
594 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
595 const char *fmt, ...)
596 {
597 va_list ap;
598 struct imap_cmd *cmdp;
599
600 va_start(ap, fmt);
601 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
602 va_end(ap);
603 if (!cmdp)
604 return DRV_STORE_BAD;
605
606 switch (get_cmd_result(ctx, cmdp)) {
607 case RESP_BAD: return DRV_STORE_BAD;
608 case RESP_NO: return DRV_MSG_BAD;
609 default: return DRV_OK;
610 }
611 }
612
613 static int skip_imap_list_l(char **sp, int level)
614 {
615 char *s = *sp;
616
617 for (;;) {
618 while (isspace((unsigned char)*s))
619 s++;
620 if (level && *s == ')') {
621 s++;
622 break;
623 }
624 if (*s == '(') {
625 /* sublist */
626 s++;
627 if (skip_imap_list_l(&s, level + 1))
628 goto bail;
629 } else if (*s == '"') {
630 /* quoted string */
631 s++;
632 for (; *s != '"'; s++)
633 if (!*s)
634 goto bail;
635 s++;
636 } else {
637 /* atom */
638 for (; *s && !isspace((unsigned char)*s); s++)
639 if (level && *s == ')')
640 break;
641 }
642
643 if (!level)
644 break;
645 if (!*s)
646 goto bail;
647 }
648 *sp = s;
649 return 0;
650
651 bail:
652 return -1;
653 }
654
655 static void skip_list(char **sp)
656 {
657 skip_imap_list_l(sp, 0);
658 }
659
660 static void parse_capability(struct imap *imap, char *cmd)
661 {
662 char *arg;
663 unsigned i;
664
665 imap->caps = 0x80000000;
666 while ((arg = next_arg(&cmd)))
667 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
668 if (!strcmp(cap_list[i], arg))
669 imap->caps |= 1 << i;
670 imap->rcaps = imap->caps;
671 }
672
673 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
674 char *s)
675 {
676 struct imap *imap = ctx->imap;
677 char *arg, *p;
678
679 if (!s || *s != '[')
680 return RESP_OK; /* no response code */
681 s++;
682 if (!(p = strchr(s, ']'))) {
683 fprintf(stderr, "IMAP error: malformed response code\n");
684 return RESP_BAD;
685 }
686 *p++ = 0;
687 arg = next_arg(&s);
688 if (!arg) {
689 fprintf(stderr, "IMAP error: empty response code\n");
690 return RESP_BAD;
691 }
692 if (!strcmp("UIDVALIDITY", arg)) {
693 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
694 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
695 return RESP_BAD;
696 }
697 } else if (!strcmp("UIDNEXT", arg)) {
698 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
699 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
700 return RESP_BAD;
701 }
702 } else if (!strcmp("CAPABILITY", arg)) {
703 parse_capability(imap, s);
704 } else if (!strcmp("ALERT", arg)) {
705 /* RFC2060 says that these messages MUST be displayed
706 * to the user
707 */
708 for (; isspace((unsigned char)*p); p++);
709 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
710 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
711 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
712 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
713 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
714 return RESP_BAD;
715 }
716 }
717 return RESP_OK;
718 }
719
720 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
721 {
722 struct imap *imap = ctx->imap;
723 struct imap_cmd *cmdp, **pcmdp;
724 char *cmd;
725 const char *arg, *arg1;
726 int n, resp, resp2, tag;
727
728 for (;;) {
729 if (buffer_gets(&imap->buf, &cmd))
730 return RESP_BAD;
731
732 arg = next_arg(&cmd);
733 if (!arg) {
734 fprintf(stderr, "IMAP error: empty response\n");
735 return RESP_BAD;
736 }
737 if (*arg == '*') {
738 arg = next_arg(&cmd);
739 if (!arg) {
740 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
741 return RESP_BAD;
742 }
743
744 if (!strcmp("NAMESPACE", arg)) {
745 /* rfc2342 NAMESPACE response. */
746 skip_list(&cmd); /* Personal mailboxes */
747 skip_list(&cmd); /* Others' mailboxes */
748 skip_list(&cmd); /* Shared mailboxes */
749 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
750 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
751 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
752 return resp;
753 } else if (!strcmp("CAPABILITY", arg)) {
754 parse_capability(imap, cmd);
755 } else if ((arg1 = next_arg(&cmd))) {
756 ; /*
757 * Unhandled response-data with at least two words.
758 * Ignore it.
759 *
760 * NEEDSWORK: Previously this case handled '<num> EXISTS'
761 * and '<num> RECENT' but as a probably-unintended side
762 * effect it ignores other unrecognized two-word
763 * responses. imap-send doesn't ever try to read
764 * messages or mailboxes these days, so consider
765 * eliminating this case.
766 */
767 } else {
768 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
769 return RESP_BAD;
770 }
771 } else if (!imap->in_progress) {
772 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
773 return RESP_BAD;
774 } else if (*arg == '+') {
775 /* This can happen only with the last command underway, as
776 it enforces a round-trip. */
777 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
778 offsetof(struct imap_cmd, next));
779 if (cmdp->cb.data) {
780 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
781 FREE_AND_NULL(cmdp->cb.data);
782 if (n != (int)cmdp->cb.dlen)
783 return RESP_BAD;
784 } else if (cmdp->cb.cont) {
785 if (cmdp->cb.cont(ctx, cmdp, cmd))
786 return RESP_BAD;
787 } else {
788 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
789 return RESP_BAD;
790 }
791 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
792 return RESP_BAD;
793 if (!cmdp->cb.cont)
794 imap->literal_pending = 0;
795 if (!tcmd)
796 return DRV_OK;
797 } else {
798 tag = atoi(arg);
799 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
800 if (cmdp->tag == tag)
801 goto gottag;
802 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
803 return RESP_BAD;
804 gottag:
805 if (!(*pcmdp = cmdp->next))
806 imap->in_progress_append = pcmdp;
807 imap->num_in_progress--;
808 if (cmdp->cb.cont || cmdp->cb.data)
809 imap->literal_pending = 0;
810 arg = next_arg(&cmd);
811 if (!arg)
812 arg = "";
813 if (!strcmp("OK", arg))
814 resp = DRV_OK;
815 else {
816 if (!strcmp("NO", arg))
817 resp = RESP_NO;
818 else /*if (!strcmp("BAD", arg))*/
819 resp = RESP_BAD;
820 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
821 !starts_with(cmdp->cmd, "LOGIN") ?
822 cmdp->cmd : "LOGIN <user> <pass>",
823 arg, cmd ? cmd : "");
824 }
825 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
826 resp = resp2;
827 if (cmdp->cb.done)
828 cmdp->cb.done(ctx, cmdp, resp);
829 free(cmdp->cb.data);
830 free(cmdp->cmd);
831 free(cmdp);
832 if (!tcmd || tcmd == cmdp)
833 return resp;
834 }
835 }
836 /* not reached */
837 }
838
839 static void imap_close_server(struct imap_store *ictx)
840 {
841 struct imap *imap = ictx->imap;
842
843 if (imap->buf.sock.fd[0] != -1) {
844 imap_exec(ictx, NULL, "LOGOUT");
845 socket_shutdown(&imap->buf.sock);
846 }
847 free(imap);
848 }
849
850 static void imap_close_store(struct imap_store *ctx)
851 {
852 imap_close_server(ctx);
853 free(ctx);
854 }
855
856 #ifndef NO_OPENSSL
857
858 /*
859 * hexchar() and cram() functions are based on the code from the isync
860 * project (http://isync.sf.net/).
861 */
862 static char hexchar(unsigned int b)
863 {
864 return b < 10 ? '0' + b : 'a' + (b - 10);
865 }
866
867 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
868 static char *cram(const char *challenge_64, const char *user, const char *pass)
869 {
870 int i, resp_len, encoded_len, decoded_len;
871 unsigned char hash[16];
872 char hex[33];
873 char *response, *response_64, *challenge;
874
875 /*
876 * length of challenge_64 (i.e. base-64 encoded string) is a good
877 * enough upper bound for challenge (decoded result).
878 */
879 encoded_len = strlen(challenge_64);
880 challenge = xmalloc(encoded_len);
881 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
882 (unsigned char *)challenge_64, encoded_len);
883 if (decoded_len < 0)
884 die("invalid challenge %s", challenge_64);
885 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
886 die("HMAC error");
887
888 hex[32] = 0;
889 for (i = 0; i < 16; i++) {
890 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
891 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
892 }
893
894 /* response: "<user> <digest in hex>" */
895 response = xstrfmt("%s %s", user, hex);
896 resp_len = strlen(response);
897
898 response_64 = xmallocz(ENCODED_SIZE(resp_len));
899 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
900 (unsigned char *)response, resp_len);
901 if (encoded_len < 0)
902 die("EVP_EncodeBlock error");
903 return (char *)response_64;
904 }
905
906 #else
907
908 static char *cram(const char *challenge_64, const char *user, const char *pass)
909 {
910 die("If you want to use CRAM-MD5 authenticate method, "
911 "you have to build git-imap-send with OpenSSL library.");
912 }
913
914 #endif
915
916 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
917 {
918 int ret;
919 char *response;
920
921 response = cram(prompt, server.user, server.pass);
922
923 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
924 if (ret != strlen(response))
925 return error("IMAP error: sending response failed");
926
927 free(response);
928
929 return 0;
930 }
931
932 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
933 {
934 if (srvc->user && srvc->pass)
935 return;
936
937 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
938 cred->host = xstrdup(srvc->host);
939
940 cred->username = xstrdup_or_null(srvc->user);
941 cred->password = xstrdup_or_null(srvc->pass);
942
943 credential_fill(cred);
944
945 if (!srvc->user)
946 srvc->user = xstrdup(cred->username);
947 if (!srvc->pass)
948 srvc->pass = xstrdup(cred->password);
949 }
950
951 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, const char *folder)
952 {
953 struct credential cred = CREDENTIAL_INIT;
954 struct imap_store *ctx;
955 struct imap *imap;
956 char *arg, *rsp;
957 int s = -1, preauth;
958
959 CALLOC_ARRAY(ctx, 1);
960
961 ctx->imap = CALLOC_ARRAY(imap, 1);
962 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
963 imap->in_progress_append = &imap->in_progress;
964
965 /* open connection to IMAP server */
966
967 if (srvc->tunnel) {
968 struct child_process tunnel = CHILD_PROCESS_INIT;
969
970 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
971
972 strvec_push(&tunnel.args, srvc->tunnel);
973 tunnel.use_shell = 1;
974 tunnel.in = -1;
975 tunnel.out = -1;
976 if (start_command(&tunnel))
977 die("cannot start proxy %s", srvc->tunnel);
978
979 imap->buf.sock.fd[0] = tunnel.out;
980 imap->buf.sock.fd[1] = tunnel.in;
981
982 imap_info("ok\n");
983 } else {
984 #ifndef NO_IPV6
985 struct addrinfo hints, *ai0, *ai;
986 int gai;
987 char portstr[6];
988
989 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
990
991 memset(&hints, 0, sizeof(hints));
992 hints.ai_socktype = SOCK_STREAM;
993 hints.ai_protocol = IPPROTO_TCP;
994
995 imap_info("Resolving %s... ", srvc->host);
996 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
997 if (gai) {
998 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
999 goto bail;
1000 }
1001 imap_info("ok\n");
1002
1003 for (ai0 = ai; ai; ai = ai->ai_next) {
1004 char addr[NI_MAXHOST];
1005
1006 s = socket(ai->ai_family, ai->ai_socktype,
1007 ai->ai_protocol);
1008 if (s < 0)
1009 continue;
1010
1011 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1012 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1013 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1014
1015 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1016 close(s);
1017 s = -1;
1018 perror("connect");
1019 continue;
1020 }
1021
1022 break;
1023 }
1024 freeaddrinfo(ai0);
1025 #else /* NO_IPV6 */
1026 struct hostent *he;
1027 struct sockaddr_in addr;
1028
1029 memset(&addr, 0, sizeof(addr));
1030 addr.sin_port = htons(srvc->port);
1031 addr.sin_family = AF_INET;
1032
1033 imap_info("Resolving %s... ", srvc->host);
1034 he = gethostbyname(srvc->host);
1035 if (!he) {
1036 perror("gethostbyname");
1037 goto bail;
1038 }
1039 imap_info("ok\n");
1040
1041 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1042
1043 s = socket(PF_INET, SOCK_STREAM, 0);
1044
1045 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1046 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1047 close(s);
1048 s = -1;
1049 perror("connect");
1050 }
1051 #endif
1052 if (s < 0) {
1053 fputs("Error: unable to connect to server.\n", stderr);
1054 goto bail;
1055 }
1056
1057 imap->buf.sock.fd[0] = s;
1058 imap->buf.sock.fd[1] = dup(s);
1059
1060 if (srvc->use_ssl &&
1061 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1062 close(s);
1063 goto bail;
1064 }
1065 imap_info("ok\n");
1066 }
1067
1068 /* read the greeting string */
1069 if (buffer_gets(&imap->buf, &rsp)) {
1070 fprintf(stderr, "IMAP error: no greeting response\n");
1071 goto bail;
1072 }
1073 arg = next_arg(&rsp);
1074 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1075 fprintf(stderr, "IMAP error: invalid greeting response\n");
1076 goto bail;
1077 }
1078 preauth = 0;
1079 if (!strcmp("PREAUTH", arg))
1080 preauth = 1;
1081 else if (strcmp("OK", arg) != 0) {
1082 fprintf(stderr, "IMAP error: unknown greeting response\n");
1083 goto bail;
1084 }
1085 parse_response_code(ctx, NULL, rsp);
1086 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1087 goto bail;
1088
1089 if (!preauth) {
1090 #ifndef NO_OPENSSL
1091 if (!srvc->use_ssl && CAP(STARTTLS)) {
1092 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1093 goto bail;
1094 if (ssl_socket_connect(&imap->buf.sock, 1,
1095 srvc->ssl_verify))
1096 goto bail;
1097 /* capabilities may have changed, so get the new capabilities */
1098 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1099 goto bail;
1100 }
1101 #endif
1102 imap_info("Logging in...\n");
1103 server_fill_credential(srvc, &cred);
1104
1105 if (srvc->auth_method) {
1106 struct imap_cmd_cb cb;
1107
1108 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1109 if (!CAP(AUTH_CRAM_MD5)) {
1110 fprintf(stderr, "You specified "
1111 "CRAM-MD5 as authentication method, "
1112 "but %s doesn't support it.\n", srvc->host);
1113 goto bail;
1114 }
1115 /* CRAM-MD5 */
1116
1117 memset(&cb, 0, sizeof(cb));
1118 cb.cont = auth_cram_md5;
1119 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1120 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1121 goto bail;
1122 }
1123 } else {
1124 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1125 goto bail;
1126 }
1127 } else {
1128 if (CAP(NOLOGIN)) {
1129 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1130 srvc->user, srvc->host);
1131 goto bail;
1132 }
1133 if (!imap->buf.sock.ssl)
1134 imap_warn("*** IMAP Warning *** Password is being "
1135 "sent in the clear\n");
1136 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1137 fprintf(stderr, "IMAP error: LOGIN failed\n");
1138 goto bail;
1139 }
1140 }
1141 } /* !preauth */
1142
1143 if (cred.username)
1144 credential_approve(&cred);
1145 credential_clear(&cred);
1146
1147 /* check the target mailbox exists */
1148 ctx->name = folder;
1149 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1150 case RESP_OK:
1151 /* ok */
1152 break;
1153 case RESP_BAD:
1154 fprintf(stderr, "IMAP error: could not check mailbox\n");
1155 goto out;
1156 case RESP_NO:
1157 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1158 imap_info("Created missing mailbox\n");
1159 } else {
1160 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1161 goto out;
1162 }
1163 break;
1164 }
1165
1166 ctx->prefix = "";
1167 return ctx;
1168
1169 bail:
1170 if (cred.username)
1171 credential_reject(&cred);
1172 credential_clear(&cred);
1173
1174 out:
1175 imap_close_store(ctx);
1176 return NULL;
1177 }
1178
1179 /*
1180 * Insert CR characters as necessary in *msg to ensure that every LF
1181 * character in *msg is preceded by a CR.
1182 */
1183 static void lf_to_crlf(struct strbuf *msg)
1184 {
1185 char *new_msg;
1186 size_t i, j;
1187 char lastc;
1188
1189 /* First pass: tally, in j, the size of the new_msg string: */
1190 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1191 if (msg->buf[i] == '\n' && lastc != '\r')
1192 j++; /* a CR will need to be added here */
1193 lastc = msg->buf[i];
1194 j++;
1195 }
1196
1197 new_msg = xmallocz(j);
1198
1199 /*
1200 * Second pass: write the new_msg string. Note that this loop is
1201 * otherwise identical to the first pass.
1202 */
1203 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1204 if (msg->buf[i] == '\n' && lastc != '\r')
1205 new_msg[j++] = '\r';
1206 lastc = new_msg[j++] = msg->buf[i];
1207 }
1208 strbuf_attach(msg, new_msg, j, j + 1);
1209 }
1210
1211 /*
1212 * Store msg to IMAP. Also detach and free the data from msg->data,
1213 * leaving msg->data empty.
1214 */
1215 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1216 {
1217 struct imap *imap = ctx->imap;
1218 struct imap_cmd_cb cb;
1219 const char *prefix, *box;
1220 int ret;
1221
1222 lf_to_crlf(msg);
1223 memset(&cb, 0, sizeof(cb));
1224
1225 cb.dlen = msg->len;
1226 cb.data = strbuf_detach(msg, NULL);
1227
1228 box = ctx->name;
1229 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1230 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1231 imap->caps = imap->rcaps;
1232 if (ret != DRV_OK)
1233 return ret;
1234
1235 return DRV_OK;
1236 }
1237
1238 static void wrap_in_html(struct strbuf *msg)
1239 {
1240 struct strbuf buf = STRBUF_INIT;
1241 static char *content_type = "Content-Type: text/html;\n";
1242 static char *pre_open = "<pre>\n";
1243 static char *pre_close = "</pre>\n";
1244 const char *body = strstr(msg->buf, "\n\n");
1245
1246 if (!body)
1247 return; /* Headers but no body; no wrapping needed */
1248
1249 body += 2;
1250
1251 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1252 strbuf_addstr(&buf, content_type);
1253 strbuf_addch(&buf, '\n');
1254 strbuf_addstr(&buf, pre_open);
1255 strbuf_addstr_xml_quoted(&buf, body);
1256 strbuf_addstr(&buf, pre_close);
1257
1258 strbuf_release(msg);
1259 *msg = buf;
1260 }
1261
1262 static int count_messages(struct strbuf *all_msgs)
1263 {
1264 int count = 0;
1265 char *p = all_msgs->buf;
1266
1267 while (1) {
1268 if (starts_with(p, "From ")) {
1269 p = strstr(p+5, "\nFrom: ");
1270 if (!p) break;
1271 p = strstr(p+7, "\nDate: ");
1272 if (!p) break;
1273 p = strstr(p+7, "\nSubject: ");
1274 if (!p) break;
1275 p += 10;
1276 count++;
1277 }
1278 p = strstr(p+5, "\nFrom ");
1279 if (!p)
1280 break;
1281 p++;
1282 }
1283 return count;
1284 }
1285
1286 /*
1287 * Copy the next message from all_msgs, starting at offset *ofs, to
1288 * msg. Update *ofs to the start of the following message. Return
1289 * true iff a message was successfully copied.
1290 */
1291 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1292 {
1293 char *p, *data;
1294 size_t len;
1295
1296 if (*ofs >= all_msgs->len)
1297 return 0;
1298
1299 data = &all_msgs->buf[*ofs];
1300 len = all_msgs->len - *ofs;
1301
1302 if (len < 5 || !starts_with(data, "From "))
1303 return 0;
1304
1305 p = strchr(data, '\n');
1306 if (p) {
1307 p++;
1308 len -= p - data;
1309 *ofs += p - data;
1310 data = p;
1311 }
1312
1313 p = strstr(data, "\nFrom ");
1314 if (p)
1315 len = &p[1] - data;
1316
1317 strbuf_add(msg, data, len);
1318 *ofs += len;
1319 return 1;
1320 }
1321
1322 static int git_imap_config(const char *var, const char *val, void *cb)
1323 {
1324
1325 if (!strcmp("imap.sslverify", var))
1326 server.ssl_verify = git_config_bool(var, val);
1327 else if (!strcmp("imap.preformattedhtml", var))
1328 server.use_html = git_config_bool(var, val);
1329 else if (!strcmp("imap.folder", var))
1330 return git_config_string(&server.folder, var, val);
1331 else if (!strcmp("imap.user", var))
1332 return git_config_string(&server.user, var, val);
1333 else if (!strcmp("imap.pass", var))
1334 return git_config_string(&server.pass, var, val);
1335 else if (!strcmp("imap.tunnel", var))
1336 return git_config_string(&server.tunnel, var, val);
1337 else if (!strcmp("imap.authmethod", var))
1338 return git_config_string(&server.auth_method, var, val);
1339 else if (!strcmp("imap.port", var))
1340 server.port = git_config_int(var, val);
1341 else if (!strcmp("imap.host", var)) {
1342 if (!val) {
1343 git_die_config("imap.host", "Missing value for 'imap.host'");
1344 } else {
1345 if (starts_with(val, "imap:"))
1346 val += 5;
1347 else if (starts_with(val, "imaps:")) {
1348 val += 6;
1349 server.use_ssl = 1;
1350 }
1351 if (starts_with(val, "//"))
1352 val += 2;
1353 server.host = xstrdup(val);
1354 }
1355 } else
1356 return git_default_config(var, val, cb);
1357
1358 return 0;
1359 }
1360
1361 static int append_msgs_to_imap(struct imap_server_conf *server,
1362 struct strbuf* all_msgs, int total)
1363 {
1364 struct strbuf msg = STRBUF_INIT;
1365 struct imap_store *ctx = NULL;
1366 int ofs = 0;
1367 int r;
1368 int n = 0;
1369
1370 ctx = imap_open_store(server, server->folder);
1371 if (!ctx) {
1372 fprintf(stderr, "failed to open store\n");
1373 return 1;
1374 }
1375 ctx->name = server->folder;
1376
1377 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1378 while (1) {
1379 unsigned percent = n * 100 / total;
1380
1381 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1382
1383 if (!split_msg(all_msgs, &msg, &ofs))
1384 break;
1385 if (server->use_html)
1386 wrap_in_html(&msg);
1387 r = imap_store_msg(ctx, &msg);
1388 if (r != DRV_OK)
1389 break;
1390 n++;
1391 }
1392 fprintf(stderr, "\n");
1393
1394 imap_close_store(ctx);
1395
1396 return 0;
1397 }
1398
1399 #ifdef USE_CURL_FOR_IMAP_SEND
1400 static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
1401 {
1402 CURL *curl;
1403 struct strbuf path = STRBUF_INIT;
1404 char *uri_encoded_folder;
1405
1406 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1407 die("curl_global_init failed");
1408
1409 curl = curl_easy_init();
1410
1411 if (!curl)
1412 die("curl_easy_init failed");
1413
1414 server_fill_credential(&server, cred);
1415 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1416 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1417
1418 strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
1419 strbuf_addstr(&path, server.host);
1420 if (!path.len || path.buf[path.len - 1] != '/')
1421 strbuf_addch(&path, '/');
1422
1423 uri_encoded_folder = curl_easy_escape(curl, server.folder, 0);
1424 if (!uri_encoded_folder)
1425 die("failed to encode server folder");
1426 strbuf_addstr(&path, uri_encoded_folder);
1427 curl_free(uri_encoded_folder);
1428
1429 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1430 strbuf_release(&path);
1431 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1432
1433 if (server.auth_method) {
1434 #ifndef GIT_CURL_HAVE_CURLOPT_LOGIN_OPTIONS
1435 warning("No LOGIN_OPTIONS support in this cURL version");
1436 #else
1437 struct strbuf auth = STRBUF_INIT;
1438 strbuf_addstr(&auth, "AUTH=");
1439 strbuf_addstr(&auth, server.auth_method);
1440 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1441 strbuf_release(&auth);
1442 #endif
1443 }
1444
1445 if (!server.use_ssl)
1446 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1447
1448 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1449 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1450
1451 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1452
1453 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1454
1455 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1456 http_trace_curl_no_data();
1457 setup_curl_trace(curl);
1458
1459 return curl;
1460 }
1461
1462 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1463 struct strbuf* all_msgs, int total)
1464 {
1465 int ofs = 0;
1466 int n = 0;
1467 struct buffer msgbuf = { STRBUF_INIT, 0 };
1468 CURL *curl;
1469 CURLcode res = CURLE_OK;
1470 struct credential cred = CREDENTIAL_INIT;
1471
1472 curl = setup_curl(server, &cred);
1473 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1474
1475 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1476 while (1) {
1477 unsigned percent = n * 100 / total;
1478 int prev_len;
1479
1480 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1481
1482 prev_len = msgbuf.buf.len;
1483 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1484 break;
1485 if (server->use_html)
1486 wrap_in_html(&msgbuf.buf);
1487 lf_to_crlf(&msgbuf.buf);
1488
1489 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1490 (curl_off_t)(msgbuf.buf.len-prev_len));
1491
1492 res = curl_easy_perform(curl);
1493
1494 if(res != CURLE_OK) {
1495 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1496 curl_easy_strerror(res));
1497 break;
1498 }
1499
1500 n++;
1501 }
1502 fprintf(stderr, "\n");
1503
1504 curl_easy_cleanup(curl);
1505 curl_global_cleanup();
1506
1507 if (cred.username) {
1508 if (res == CURLE_OK)
1509 credential_approve(&cred);
1510 else if (res == CURLE_LOGIN_DENIED)
1511 credential_reject(&cred);
1512 }
1513
1514 credential_clear(&cred);
1515
1516 return res != CURLE_OK;
1517 }
1518 #endif
1519
1520 int cmd_main(int argc, const char **argv)
1521 {
1522 struct strbuf all_msgs = STRBUF_INIT;
1523 int total;
1524 int nongit_ok;
1525
1526 setup_git_directory_gently(&nongit_ok);
1527 git_config(git_imap_config, NULL);
1528
1529 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1530
1531 if (argc)
1532 usage_with_options(imap_send_usage, imap_send_options);
1533
1534 #ifndef USE_CURL_FOR_IMAP_SEND
1535 if (use_curl) {
1536 warning("--curl not supported in this build");
1537 use_curl = 0;
1538 }
1539 #elif defined(NO_OPENSSL)
1540 if (!use_curl) {
1541 warning("--no-curl not supported in this build");
1542 use_curl = 1;
1543 }
1544 #endif
1545
1546 if (!server.port)
1547 server.port = server.use_ssl ? 993 : 143;
1548
1549 if (!server.folder) {
1550 fprintf(stderr, "no imap store specified\n");
1551 return 1;
1552 }
1553 if (!server.host) {
1554 if (!server.tunnel) {
1555 fprintf(stderr, "no imap host specified\n");
1556 return 1;
1557 }
1558 server.host = "tunnel";
1559 }
1560
1561 /* read the messages */
1562 if (strbuf_read(&all_msgs, 0, 0) < 0) {
1563 error_errno(_("could not read from stdin"));
1564 return 1;
1565 }
1566
1567 if (all_msgs.len == 0) {
1568 fprintf(stderr, "nothing to send\n");
1569 return 1;
1570 }
1571
1572 total = count_messages(&all_msgs);
1573 if (!total) {
1574 fprintf(stderr, "no messages to send\n");
1575 return 1;
1576 }
1577
1578 /* write it to the imap server */
1579
1580 if (server.tunnel)
1581 return append_msgs_to_imap(&server, &all_msgs, total);
1582
1583 #ifdef USE_CURL_FOR_IMAP_SEND
1584 if (use_curl)
1585 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1586 #endif
1587
1588 return append_msgs_to_imap(&server, &all_msgs, total);
1589 }
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