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RelNotes: minor typo fixes in 2.15.1 draft
[git/debian.git] / imap-send.c
blobe0523d3427205065037a493750da03fbefd1c8f4
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 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 != '[')
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 (!strcmp("UIDVALIDITY", arg)) {
696 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
697 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
698 return RESP_BAD;
699 }
700 } else if (!strcmp("UIDNEXT", arg)) {
701 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
702 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
703 return RESP_BAD;
704 }
705 } else if (!strcmp("CAPABILITY", arg)) {
706 parse_capability(imap, s);
707 } else if (!strcmp("ALERT", arg)) {
708 /* RFC2060 says that these messages MUST be displayed
709 * to the user
710 */
711 for (; isspace((unsigned char)*p); p++);
712 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
713 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
714 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
715 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
716 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
717 return RESP_BAD;
718 }
719 }
720 return RESP_OK;
721 }
722
723 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
724 {
725 struct imap *imap = ctx->imap;
726 struct imap_cmd *cmdp, **pcmdp;
727 char *cmd, *arg, *arg1;
728 int n, resp, resp2, tag;
729
730 for (;;) {
731 if (buffer_gets(&imap->buf, &cmd))
732 return RESP_BAD;
733
734 arg = next_arg(&cmd);
735 if (*arg == '*') {
736 arg = next_arg(&cmd);
737 if (!arg) {
738 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
739 return RESP_BAD;
740 }
741
742 if (!strcmp("NAMESPACE", arg)) {
743 /* rfc2342 NAMESPACE response. */
744 skip_list(&cmd); /* Personal mailboxes */
745 skip_list(&cmd); /* Others' mailboxes */
746 skip_list(&cmd); /* Shared mailboxes */
747 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
748 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
749 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
750 return resp;
751 } else if (!strcmp("CAPABILITY", arg)) {
752 parse_capability(imap, cmd);
753 } else if ((arg1 = next_arg(&cmd))) {
754 ; /*
755 * Unhandled response-data with at least two words.
756 * Ignore it.
757 *
758 * NEEDSWORK: Previously this case handled '<num> EXISTS'
759 * and '<num> RECENT' but as a probably-unintended side
760 * effect it ignores other unrecognized two-word
761 * responses. imap-send doesn't ever try to read
762 * messages or mailboxes these days, so consider
763 * eliminating this case.
764 */
765 } else {
766 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
767 return RESP_BAD;
768 }
769 } else if (!imap->in_progress) {
770 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
771 return RESP_BAD;
772 } else if (*arg == '+') {
773 /* This can happen only with the last command underway, as
774 it enforces a round-trip. */
775 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
776 offsetof(struct imap_cmd, next));
777 if (cmdp->cb.data) {
778 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
779 FREE_AND_NULL(cmdp->cb.data);
780 if (n != (int)cmdp->cb.dlen)
781 return RESP_BAD;
782 } else if (cmdp->cb.cont) {
783 if (cmdp->cb.cont(ctx, cmdp, cmd))
784 return RESP_BAD;
785 } else {
786 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
787 return RESP_BAD;
788 }
789 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
790 return RESP_BAD;
791 if (!cmdp->cb.cont)
792 imap->literal_pending = 0;
793 if (!tcmd)
794 return DRV_OK;
795 } else {
796 tag = atoi(arg);
797 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
798 if (cmdp->tag == tag)
799 goto gottag;
800 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
801 return RESP_BAD;
802 gottag:
803 if (!(*pcmdp = cmdp->next))
804 imap->in_progress_append = pcmdp;
805 imap->num_in_progress--;
806 if (cmdp->cb.cont || cmdp->cb.data)
807 imap->literal_pending = 0;
808 arg = next_arg(&cmd);
809 if (!strcmp("OK", arg))
810 resp = DRV_OK;
811 else {
812 if (!strcmp("NO", arg))
813 resp = RESP_NO;
814 else /*if (!strcmp("BAD", arg))*/
815 resp = RESP_BAD;
816 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
817 !starts_with(cmdp->cmd, "LOGIN") ?
818 cmdp->cmd : "LOGIN <user> <pass>",
819 arg, cmd ? cmd : "");
820 }
821 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
822 resp = resp2;
823 if (cmdp->cb.done)
824 cmdp->cb.done(ctx, cmdp, resp);
825 free(cmdp->cb.data);
826 free(cmdp->cmd);
827 free(cmdp);
828 if (!tcmd || tcmd == cmdp)
829 return resp;
830 }
831 }
832 /* not reached */
833 }
834
835 static void imap_close_server(struct imap_store *ictx)
836 {
837 struct imap *imap = ictx->imap;
838
839 if (imap->buf.sock.fd[0] != -1) {
840 imap_exec(ictx, NULL, "LOGOUT");
841 socket_shutdown(&imap->buf.sock);
842 }
843 free(imap);
844 }
845
846 static void imap_close_store(struct imap_store *ctx)
847 {
848 imap_close_server(ctx);
849 free(ctx);
850 }
851
852 #ifndef NO_OPENSSL
853
854 /*
855 * hexchar() and cram() functions are based on the code from the isync
856 * project (http://isync.sf.net/).
857 */
858 static char hexchar(unsigned int b)
859 {
860 return b < 10 ? '0' + b : 'a' + (b - 10);
861 }
862
863 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
864 static char *cram(const char *challenge_64, const char *user, const char *pass)
865 {
866 int i, resp_len, encoded_len, decoded_len;
867 unsigned char hash[16];
868 char hex[33];
869 char *response, *response_64, *challenge;
870
871 /*
872 * length of challenge_64 (i.e. base-64 encoded string) is a good
873 * enough upper bound for challenge (decoded result).
874 */
875 encoded_len = strlen(challenge_64);
876 challenge = xmalloc(encoded_len);
877 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
878 (unsigned char *)challenge_64, encoded_len);
879 if (decoded_len < 0)
880 die("invalid challenge %s", challenge_64);
881 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
882 die("HMAC error");
883
884 hex[32] = 0;
885 for (i = 0; i < 16; i++) {
886 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
887 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
888 }
889
890 /* response: "<user> <digest in hex>" */
891 response = xstrfmt("%s %s", user, hex);
892 resp_len = strlen(response);
893
894 response_64 = xmallocz(ENCODED_SIZE(resp_len));
895 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
896 (unsigned char *)response, resp_len);
897 if (encoded_len < 0)
898 die("EVP_EncodeBlock error");
899 return (char *)response_64;
900 }
901
902 #else
903
904 static char *cram(const char *challenge_64, const char *user, const char *pass)
905 {
906 die("If you want to use CRAM-MD5 authenticate method, "
907 "you have to build git-imap-send with OpenSSL library.");
908 }
909
910 #endif
911
912 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
913 {
914 int ret;
915 char *response;
916
917 response = cram(prompt, server.user, server.pass);
918
919 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
920 if (ret != strlen(response))
921 return error("IMAP error: sending response failed");
922
923 free(response);
924
925 return 0;
926 }
927
928 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
929 {
930 if (srvc->user && srvc->pass)
931 return;
932
933 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
934 cred->host = xstrdup(srvc->host);
935
936 cred->username = xstrdup_or_null(srvc->user);
937 cred->password = xstrdup_or_null(srvc->pass);
938
939 credential_fill(cred);
940
941 if (!srvc->user)
942 srvc->user = xstrdup(cred->username);
943 if (!srvc->pass)
944 srvc->pass = xstrdup(cred->password);
945 }
946
947 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
948 {
949 struct credential cred = CREDENTIAL_INIT;
950 struct imap_store *ctx;
951 struct imap *imap;
952 char *arg, *rsp;
953 int s = -1, preauth;
954
955 ctx = xcalloc(1, sizeof(*ctx));
956
957 ctx->imap = imap = xcalloc(1, sizeof(*imap));
958 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
959 imap->in_progress_append = &imap->in_progress;
960
961 /* open connection to IMAP server */
962
963 if (srvc->tunnel) {
964 struct child_process tunnel = CHILD_PROCESS_INIT;
965
966 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
967
968 argv_array_push(&tunnel.args, srvc->tunnel);
969 tunnel.use_shell = 1;
970 tunnel.in = -1;
971 tunnel.out = -1;
972 if (start_command(&tunnel))
973 die("cannot start proxy %s", srvc->tunnel);
974
975 imap->buf.sock.fd[0] = tunnel.out;
976 imap->buf.sock.fd[1] = tunnel.in;
977
978 imap_info("ok\n");
979 } else {
980 #ifndef NO_IPV6
981 struct addrinfo hints, *ai0, *ai;
982 int gai;
983 char portstr[6];
984
985 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
986
987 memset(&hints, 0, sizeof(hints));
988 hints.ai_socktype = SOCK_STREAM;
989 hints.ai_protocol = IPPROTO_TCP;
990
991 imap_info("Resolving %s... ", srvc->host);
992 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
993 if (gai) {
994 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
995 goto bail;
996 }
997 imap_info("ok\n");
998
999 for (ai0 = ai; ai; ai = ai->ai_next) {
1000 char addr[NI_MAXHOST];
1001
1002 s = socket(ai->ai_family, ai->ai_socktype,
1003 ai->ai_protocol);
1004 if (s < 0)
1005 continue;
1006
1007 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1008 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1009 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1010
1011 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1012 close(s);
1013 s = -1;
1014 perror("connect");
1015 continue;
1016 }
1017
1018 break;
1019 }
1020 freeaddrinfo(ai0);
1021 #else /* NO_IPV6 */
1022 struct hostent *he;
1023 struct sockaddr_in addr;
1024
1025 memset(&addr, 0, sizeof(addr));
1026 addr.sin_port = htons(srvc->port);
1027 addr.sin_family = AF_INET;
1028
1029 imap_info("Resolving %s... ", srvc->host);
1030 he = gethostbyname(srvc->host);
1031 if (!he) {
1032 perror("gethostbyname");
1033 goto bail;
1034 }
1035 imap_info("ok\n");
1036
1037 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1038
1039 s = socket(PF_INET, SOCK_STREAM, 0);
1040
1041 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1042 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1043 close(s);
1044 s = -1;
1045 perror("connect");
1046 }
1047 #endif
1048 if (s < 0) {
1049 fputs("Error: unable to connect to server.\n", stderr);
1050 goto bail;
1051 }
1052
1053 imap->buf.sock.fd[0] = s;
1054 imap->buf.sock.fd[1] = dup(s);
1055
1056 if (srvc->use_ssl &&
1057 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1058 close(s);
1059 goto bail;
1060 }
1061 imap_info("ok\n");
1062 }
1063
1064 /* read the greeting string */
1065 if (buffer_gets(&imap->buf, &rsp)) {
1066 fprintf(stderr, "IMAP error: no greeting response\n");
1067 goto bail;
1068 }
1069 arg = next_arg(&rsp);
1070 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1071 fprintf(stderr, "IMAP error: invalid greeting response\n");
1072 goto bail;
1073 }
1074 preauth = 0;
1075 if (!strcmp("PREAUTH", arg))
1076 preauth = 1;
1077 else if (strcmp("OK", arg) != 0) {
1078 fprintf(stderr, "IMAP error: unknown greeting response\n");
1079 goto bail;
1080 }
1081 parse_response_code(ctx, NULL, rsp);
1082 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1083 goto bail;
1084
1085 if (!preauth) {
1086 #ifndef NO_OPENSSL
1087 if (!srvc->use_ssl && CAP(STARTTLS)) {
1088 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1089 goto bail;
1090 if (ssl_socket_connect(&imap->buf.sock, 1,
1091 srvc->ssl_verify))
1092 goto bail;
1093 /* capabilities may have changed, so get the new capabilities */
1094 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1095 goto bail;
1096 }
1097 #endif
1098 imap_info("Logging in...\n");
1099 server_fill_credential(srvc, &cred);
1100
1101 if (srvc->auth_method) {
1102 struct imap_cmd_cb cb;
1103
1104 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1105 if (!CAP(AUTH_CRAM_MD5)) {
1106 fprintf(stderr, "You specified"
1107 "CRAM-MD5 as authentication method, "
1108 "but %s doesn't support it.\n", srvc->host);
1109 goto bail;
1110 }
1111 /* CRAM-MD5 */
1112
1113 memset(&cb, 0, sizeof(cb));
1114 cb.cont = auth_cram_md5;
1115 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1116 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1117 goto bail;
1118 }
1119 } else {
1120 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1121 goto bail;
1122 }
1123 } else {
1124 if (CAP(NOLOGIN)) {
1125 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1126 srvc->user, srvc->host);
1127 goto bail;
1128 }
1129 if (!imap->buf.sock.ssl)
1130 imap_warn("*** IMAP Warning *** Password is being "
1131 "sent in the clear\n");
1132 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1133 fprintf(stderr, "IMAP error: LOGIN failed\n");
1134 goto bail;
1135 }
1136 }
1137 } /* !preauth */
1138
1139 if (cred.username)
1140 credential_approve(&cred);
1141 credential_clear(&cred);
1142
1143 /* check the target mailbox exists */
1144 ctx->name = folder;
1145 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1146 case RESP_OK:
1147 /* ok */
1148 break;
1149 case RESP_BAD:
1150 fprintf(stderr, "IMAP error: could not check mailbox\n");
1151 goto out;
1152 case RESP_NO:
1153 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1154 imap_info("Created missing mailbox\n");
1155 } else {
1156 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1157 goto out;
1158 }
1159 break;
1160 }
1161
1162 ctx->prefix = "";
1163 return ctx;
1164
1165 bail:
1166 if (cred.username)
1167 credential_reject(&cred);
1168 credential_clear(&cred);
1169
1170 out:
1171 imap_close_store(ctx);
1172 return NULL;
1173 }
1174
1175 /*
1176 * Insert CR characters as necessary in *msg to ensure that every LF
1177 * character in *msg is preceded by a CR.
1178 */
1179 static void lf_to_crlf(struct strbuf *msg)
1180 {
1181 char *new;
1182 size_t i, j;
1183 char lastc;
1184
1185 /* First pass: tally, in j, the size of the new string: */
1186 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1187 if (msg->buf[i] == '\n' && lastc != '\r')
1188 j++; /* a CR will need to be added here */
1189 lastc = msg->buf[i];
1190 j++;
1191 }
1192
1193 new = xmallocz(j);
1194
1195 /*
1196 * Second pass: write the new string. Note that this loop is
1197 * otherwise identical to the first pass.
1198 */
1199 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1200 if (msg->buf[i] == '\n' && lastc != '\r')
1201 new[j++] = '\r';
1202 lastc = new[j++] = msg->buf[i];
1203 }
1204 strbuf_attach(msg, new, j, j + 1);
1205 }
1206
1207 /*
1208 * Store msg to IMAP. Also detach and free the data from msg->data,
1209 * leaving msg->data empty.
1210 */
1211 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1212 {
1213 struct imap *imap = ctx->imap;
1214 struct imap_cmd_cb cb;
1215 const char *prefix, *box;
1216 int ret;
1217
1218 lf_to_crlf(msg);
1219 memset(&cb, 0, sizeof(cb));
1220
1221 cb.dlen = msg->len;
1222 cb.data = strbuf_detach(msg, NULL);
1223
1224 box = ctx->name;
1225 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1226 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1227 imap->caps = imap->rcaps;
1228 if (ret != DRV_OK)
1229 return ret;
1230
1231 return DRV_OK;
1232 }
1233
1234 static void wrap_in_html(struct strbuf *msg)
1235 {
1236 struct strbuf buf = STRBUF_INIT;
1237 static char *content_type = "Content-Type: text/html;\n";
1238 static char *pre_open = "<pre>\n";
1239 static char *pre_close = "</pre>\n";
1240 const char *body = strstr(msg->buf, "\n\n");
1241
1242 if (!body)
1243 return; /* Headers but no body; no wrapping needed */
1244
1245 body += 2;
1246
1247 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1248 strbuf_addstr(&buf, content_type);
1249 strbuf_addch(&buf, '\n');
1250 strbuf_addstr(&buf, pre_open);
1251 strbuf_addstr_xml_quoted(&buf, body);
1252 strbuf_addstr(&buf, pre_close);
1253
1254 strbuf_release(msg);
1255 *msg = buf;
1256 }
1257
1258 #define CHUNKSIZE 0x1000
1259
1260 static int read_message(FILE *f, struct strbuf *all_msgs)
1261 {
1262 do {
1263 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1264 break;
1265 } while (!feof(f));
1266
1267 return ferror(f) ? -1 : 0;
1268 }
1269
1270 static int count_messages(struct strbuf *all_msgs)
1271 {
1272 int count = 0;
1273 char *p = all_msgs->buf;
1274
1275 while (1) {
1276 if (starts_with(p, "From ")) {
1277 p = strstr(p+5, "\nFrom: ");
1278 if (!p) break;
1279 p = strstr(p+7, "\nDate: ");
1280 if (!p) break;
1281 p = strstr(p+7, "\nSubject: ");
1282 if (!p) break;
1283 p += 10;
1284 count++;
1285 }
1286 p = strstr(p+5, "\nFrom ");
1287 if (!p)
1288 break;
1289 p++;
1290 }
1291 return count;
1292 }
1293
1294 /*
1295 * Copy the next message from all_msgs, starting at offset *ofs, to
1296 * msg. Update *ofs to the start of the following message. Return
1297 * true iff a message was successfully copied.
1298 */
1299 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1300 {
1301 char *p, *data;
1302 size_t len;
1303
1304 if (*ofs >= all_msgs->len)
1305 return 0;
1306
1307 data = &all_msgs->buf[*ofs];
1308 len = all_msgs->len - *ofs;
1309
1310 if (len < 5 || !starts_with(data, "From "))
1311 return 0;
1312
1313 p = strchr(data, '\n');
1314 if (p) {
1315 p++;
1316 len -= p - data;
1317 *ofs += p - data;
1318 data = p;
1319 }
1320
1321 p = strstr(data, "\nFrom ");
1322 if (p)
1323 len = &p[1] - data;
1324
1325 strbuf_add(msg, data, len);
1326 *ofs += len;
1327 return 1;
1328 }
1329
1330 static void git_imap_config(void)
1331 {
1332 const char *val = NULL;
1333
1334 git_config_get_bool("imap.sslverify", &server.ssl_verify);
1335 git_config_get_bool("imap.preformattedhtml", &server.use_html);
1336 git_config_get_string("imap.folder", &server.folder);
1337
1338 if (!git_config_get_value("imap.host", &val)) {
1339 if (!val) {
1340 git_die_config("imap.host", "Missing value for 'imap.host'");
1341 } else {
1342 if (starts_with(val, "imap:"))
1343 val += 5;
1344 else if (starts_with(val, "imaps:")) {
1345 val += 6;
1346 server.use_ssl = 1;
1347 }
1348 if (starts_with(val, "//"))
1349 val += 2;
1350 server.host = xstrdup(val);
1351 }
1352 }
1353
1354 git_config_get_string("imap.user", &server.user);
1355 git_config_get_string("imap.pass", &server.pass);
1356 git_config_get_int("imap.port", &server.port);
1357 git_config_get_string("imap.tunnel", &server.tunnel);
1358 git_config_get_string("imap.authmethod", &server.auth_method);
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
1405 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1406 die("curl_global_init failed");
1407
1408 curl = curl_easy_init();
1409
1410 if (!curl)
1411 die("curl_easy_init failed");
1412
1413 server_fill_credential(&server, cred);
1414 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1415 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1416
1417 strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
1418 strbuf_addstr(&path, server.host);
1419 if (!path.len || path.buf[path.len - 1] != '/')
1420 strbuf_addch(&path, '/');
1421 strbuf_addstr(&path, server.folder);
1422
1423 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1424 strbuf_release(&path);
1425 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1426
1427 if (server.auth_method) {
1428 #if LIBCURL_VERSION_NUM < 0x072200
1429 warning("No LOGIN_OPTIONS support in this cURL version");
1430 #else
1431 struct strbuf auth = STRBUF_INIT;
1432 strbuf_addstr(&auth, "AUTH=");
1433 strbuf_addstr(&auth, server.auth_method);
1434 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1435 strbuf_release(&auth);
1436 #endif
1437 }
1438
1439 if (!server.use_ssl)
1440 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1441
1442 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1443 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1444
1445 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1446
1447 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1448
1449 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1450 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1451 setup_curl_trace(curl);
1452
1453 return curl;
1454 }
1455
1456 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1457 struct strbuf* all_msgs, int total) {
1458 int ofs = 0;
1459 int n = 0;
1460 struct buffer msgbuf = { STRBUF_INIT, 0 };
1461 CURL *curl;
1462 CURLcode res = CURLE_OK;
1463 struct credential cred = CREDENTIAL_INIT;
1464
1465 curl = setup_curl(server, &cred);
1466 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1467
1468 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1469 while (1) {
1470 unsigned percent = n * 100 / total;
1471 int prev_len;
1472
1473 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1474
1475 prev_len = msgbuf.buf.len;
1476 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1477 break;
1478 if (server->use_html)
1479 wrap_in_html(&msgbuf.buf);
1480 lf_to_crlf(&msgbuf.buf);
1481
1482 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1483 (curl_off_t)(msgbuf.buf.len-prev_len));
1484
1485 res = curl_easy_perform(curl);
1486
1487 if(res != CURLE_OK) {
1488 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1489 curl_easy_strerror(res));
1490 break;
1491 }
1492
1493 n++;
1494 }
1495 fprintf(stderr, "\n");
1496
1497 curl_easy_cleanup(curl);
1498 curl_global_cleanup();
1499
1500 if (cred.username) {
1501 if (res == CURLE_OK)
1502 credential_approve(&cred);
1503 #if LIBCURL_VERSION_NUM >= 0x070d01
1504 else if (res == CURLE_LOGIN_DENIED)
1505 #else
1506 else
1507 #endif
1508 credential_reject(&cred);
1509 }
1510
1511 credential_clear(&cred);
1512
1513 return res != CURLE_OK;
1514 }
1515 #endif
1516
1517 int cmd_main(int argc, const char **argv)
1518 {
1519 struct strbuf all_msgs = STRBUF_INIT;
1520 int total;
1521 int nongit_ok;
1522
1523 setup_git_directory_gently(&nongit_ok);
1524 git_imap_config();
1525
1526 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1527
1528 if (argc)
1529 usage_with_options(imap_send_usage, imap_send_options);
1530
1531 #ifndef USE_CURL_FOR_IMAP_SEND
1532 if (use_curl) {
1533 warning("--curl not supported in this build");
1534 use_curl = 0;
1535 }
1536 #elif defined(NO_OPENSSL)
1537 if (!use_curl) {
1538 warning("--no-curl not supported in this build");
1539 use_curl = 1;
1540 }
1541 #endif
1542
1543 if (!server.port)
1544 server.port = server.use_ssl ? 993 : 143;
1545
1546 if (!server.folder) {
1547 fprintf(stderr, "no imap store specified\n");
1548 return 1;
1549 }
1550 if (!server.host) {
1551 if (!server.tunnel) {
1552 fprintf(stderr, "no imap host specified\n");
1553 return 1;
1554 }
1555 server.host = "tunnel";
1556 }
1557
1558 /* read the messages */
1559 if (read_message(stdin, &all_msgs)) {
1560 fprintf(stderr, "error reading input\n");
1561 return 1;
1562 }
1563
1564 if (all_msgs.len == 0) {
1565 fprintf(stderr, "nothing to send\n");
1566 return 1;
1567 }
1568
1569 total = count_messages(&all_msgs);
1570 if (!total) {
1571 fprintf(stderr, "no messages to send\n");
1572 return 1;
1573 }
1574
1575 /* write it to the imap server */
1576
1577 if (server.tunnel)
1578 return append_msgs_to_imap(&server, &all_msgs, total);
1579
1580 #ifdef USE_CURL_FOR_IMAP_SEND
1581 if (use_curl)
1582 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1583 #endif
1584
1585 return append_msgs_to_imap(&server, &all_msgs, total);
1586 }
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