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The 19th batch
[alt-git.git] / imap-send.c
blobec68a0668777658bd981c3f46e030d4fcd47af34
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 <https://www.gnu.org/licenses/>.
22 */
23
24 #define USE_THE_REPOSITORY_VARIABLE
25
26 #include "git-compat-util.h"
27 #include "config.h"
28 #include "credential.h"
29 #include "gettext.h"
30 #include "run-command.h"
31 #include "parse-options.h"
32 #include "setup.h"
33 #include "strbuf.h"
34 #ifdef USE_CURL_FOR_IMAP_SEND
35 #include "http.h"
36 #endif
37
38 #if defined(USE_CURL_FOR_IMAP_SEND)
39 /* Always default to curl if it's available. */
40 #define USE_CURL_DEFAULT 1
41 #else
42 /* We don't have curl, so continue to use the historical implementation */
43 #define USE_CURL_DEFAULT 0
44 #endif
45
46 static int verbosity;
47 static int use_curl = USE_CURL_DEFAULT;
48
49 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
50
51 static struct option imap_send_options[] = {
52 OPT__VERBOSITY(&verbosity),
53 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
54 OPT_END()
55 };
56
57 #undef DRV_OK
58 #define DRV_OK 0
59 #define DRV_MSG_BAD -1
60 #define DRV_BOX_BAD -2
61 #define DRV_STORE_BAD -3
62
63 __attribute__((format (printf, 1, 2)))
64 static void imap_info(const char *, ...);
65 __attribute__((format (printf, 1, 2)))
66 static void imap_warn(const char *, ...);
67
68 static char *next_arg(char **);
69
70 struct imap_server_conf {
71 char *tunnel;
72 char *host;
73 int port;
74 char *folder;
75 char *user;
76 char *pass;
77 int use_ssl;
78 int ssl_verify;
79 int use_html;
80 char *auth_method;
81 };
82
83 struct imap_socket {
84 int fd[2];
85 #if defined(NO_OPENSSL) && !defined(HAVE_OPENSSL_CSPRNG)
86 void *ssl;
87 #else
88 SSL *ssl;
89 #endif
90 };
91
92 struct imap_buffer {
93 struct imap_socket sock;
94 int bytes;
95 int offset;
96 char buf[1024];
97 };
98
99 struct imap_cmd;
100
101 struct imap {
102 int uidnext; /* from SELECT responses */
103 unsigned caps, rcaps; /* CAPABILITY results */
104 /* command queue */
105 int nexttag, num_in_progress, literal_pending;
106 struct imap_cmd *in_progress, **in_progress_append;
107 struct imap_buffer buf; /* this is BIG, so put it last */
108 };
109
110 struct imap_store {
111 const struct imap_server_conf *cfg;
112 /* currently open mailbox */
113 const char *name; /* foreign! maybe preset? */
114 int uidvalidity;
115 struct imap *imap;
116 const char *prefix;
117 };
118
119 struct imap_cmd_cb {
120 int (*cont)(struct imap_store *ctx, const char *prompt);
121 void *ctx;
122 char *data;
123 int dlen;
124 };
125
126 struct imap_cmd {
127 struct imap_cmd *next;
128 struct imap_cmd_cb cb;
129 char *cmd;
130 int tag;
131 };
132
133 #define CAP(cap) (imap->caps & (1 << (cap)))
134
135 enum CAPABILITY {
136 NOLOGIN = 0,
137 UIDPLUS,
138 LITERALPLUS,
139 NAMESPACE,
140 STARTTLS,
141 AUTH_CRAM_MD5
142 };
143
144 static const char *cap_list[] = {
145 "LOGINDISABLED",
146 "UIDPLUS",
147 "LITERAL+",
148 "NAMESPACE",
149 "STARTTLS",
150 "AUTH=CRAM-MD5",
151 };
152
153 #define RESP_OK 0
154 #define RESP_NO 1
155 #define RESP_BAD 2
156
157 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
158
159
160 #ifndef NO_OPENSSL
161 static void ssl_socket_perror(const char *func)
162 {
163 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
164 }
165 #endif
166
167 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
168 {
169 #ifndef NO_OPENSSL
170 if (sock->ssl) {
171 int sslerr = SSL_get_error(sock->ssl, ret);
172 switch (sslerr) {
173 case SSL_ERROR_NONE:
174 break;
175 case SSL_ERROR_SYSCALL:
176 perror("SSL_connect");
177 break;
178 default:
179 ssl_socket_perror("SSL_connect");
180 break;
181 }
182 } else
183 #endif
184 {
185 if (ret < 0)
186 perror(func);
187 else
188 fprintf(stderr, "%s: unexpected EOF\n", func);
189 }
190 /* mark as used to appease -Wunused-parameter with NO_OPENSSL */
191 (void)sock;
192 }
193
194 #ifdef NO_OPENSSL
195 static int ssl_socket_connect(struct imap_socket *sock UNUSED,
196 const struct imap_server_conf *cfg UNUSED,
197 int use_tls_only UNUSED)
198 {
199 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
200 return -1;
201 }
202
203 #else
204
205 static int host_matches(const char *host, const char *pattern)
206 {
207 if (pattern[0] == '*' && pattern[1] == '.') {
208 pattern += 2;
209 if (!(host = strchr(host, '.')))
210 return 0;
211 host++;
212 }
213
214 return *host && *pattern && !strcasecmp(host, pattern);
215 }
216
217 static int verify_hostname(X509 *cert, const char *hostname)
218 {
219 int len;
220 X509_NAME *subj;
221 char cname[1000];
222 int i, found;
223 STACK_OF(GENERAL_NAME) *subj_alt_names;
224
225 /* try the DNS subjectAltNames */
226 found = 0;
227 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
228 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
229 for (i = 0; !found && i < num_subj_alt_names; i++) {
230 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
231 if (subj_alt_name->type == GEN_DNS &&
232 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
233 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
234 found = 1;
235 }
236 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
237 }
238 if (found)
239 return 0;
240
241 /* try the common name */
242 if (!(subj = X509_get_subject_name(cert)))
243 return error("cannot get certificate subject");
244 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
245 return error("cannot get certificate common name");
246 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
247 return 0;
248 return error("certificate owner '%s' does not match hostname '%s'",
249 cname, hostname);
250 }
251
252 static int ssl_socket_connect(struct imap_socket *sock,
253 const struct imap_server_conf *cfg,
254 int use_tls_only)
255 {
256 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
257 const SSL_METHOD *meth;
258 #else
259 SSL_METHOD *meth;
260 #endif
261 SSL_CTX *ctx;
262 int ret;
263 X509 *cert;
264
265 SSL_library_init();
266 SSL_load_error_strings();
267
268 meth = SSLv23_method();
269 if (!meth) {
270 ssl_socket_perror("SSLv23_method");
271 return -1;
272 }
273
274 ctx = SSL_CTX_new(meth);
275 if (!ctx) {
276 ssl_socket_perror("SSL_CTX_new");
277 return -1;
278 }
279
280 if (use_tls_only)
281 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
282
283 if (cfg->ssl_verify)
284 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
285
286 if (!SSL_CTX_set_default_verify_paths(ctx)) {
287 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
288 return -1;
289 }
290 sock->ssl = SSL_new(ctx);
291 if (!sock->ssl) {
292 ssl_socket_perror("SSL_new");
293 return -1;
294 }
295 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
296 ssl_socket_perror("SSL_set_rfd");
297 return -1;
298 }
299 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
300 ssl_socket_perror("SSL_set_wfd");
301 return -1;
302 }
303
304 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
305 /*
306 * SNI (RFC4366)
307 * OpenSSL does not document this function, but the implementation
308 * returns 1 on success, 0 on failure after calling SSLerr().
309 */
310 ret = SSL_set_tlsext_host_name(sock->ssl, cfg->host);
311 if (ret != 1)
312 warning("SSL_set_tlsext_host_name(%s) failed.", cfg->host);
313 #endif
314
315 ret = SSL_connect(sock->ssl);
316 if (ret <= 0) {
317 socket_perror("SSL_connect", sock, ret);
318 return -1;
319 }
320
321 if (cfg->ssl_verify) {
322 /* make sure the hostname matches that of the certificate */
323 cert = SSL_get_peer_certificate(sock->ssl);
324 if (!cert)
325 return error("unable to get peer certificate.");
326 if (verify_hostname(cert, cfg->host) < 0)
327 return -1;
328 }
329
330 return 0;
331 }
332 #endif
333
334 static int socket_read(struct imap_socket *sock, char *buf, int len)
335 {
336 ssize_t n;
337 #ifndef NO_OPENSSL
338 if (sock->ssl)
339 n = SSL_read(sock->ssl, buf, len);
340 else
341 #endif
342 n = xread(sock->fd[0], buf, len);
343 if (n <= 0) {
344 socket_perror("read", sock, n);
345 close(sock->fd[0]);
346 close(sock->fd[1]);
347 sock->fd[0] = sock->fd[1] = -1;
348 }
349 return n;
350 }
351
352 static int socket_write(struct imap_socket *sock, const char *buf, int len)
353 {
354 int n;
355 #ifndef NO_OPENSSL
356 if (sock->ssl)
357 n = SSL_write(sock->ssl, buf, len);
358 else
359 #endif
360 n = write_in_full(sock->fd[1], buf, len);
361 if (n != len) {
362 socket_perror("write", sock, n);
363 close(sock->fd[0]);
364 close(sock->fd[1]);
365 sock->fd[0] = sock->fd[1] = -1;
366 }
367 return n;
368 }
369
370 static void socket_shutdown(struct imap_socket *sock)
371 {
372 #ifndef NO_OPENSSL
373 if (sock->ssl) {
374 SSL_shutdown(sock->ssl);
375 SSL_free(sock->ssl);
376 }
377 #endif
378 close(sock->fd[0]);
379 close(sock->fd[1]);
380 }
381
382 /* simple line buffering */
383 static int buffer_gets(struct imap_buffer *b, char **s)
384 {
385 int n;
386 int start = b->offset;
387
388 *s = b->buf + start;
389
390 for (;;) {
391 /* make sure we have enough data to read the \r\n sequence */
392 if (b->offset + 1 >= b->bytes) {
393 if (start) {
394 /* shift down used bytes */
395 *s = b->buf;
396
397 assert(start <= b->bytes);
398 n = b->bytes - start;
399
400 if (n)
401 memmove(b->buf, b->buf + start, n);
402 b->offset -= start;
403 b->bytes = n;
404 start = 0;
405 }
406
407 n = socket_read(&b->sock, b->buf + b->bytes,
408 sizeof(b->buf) - b->bytes);
409
410 if (n <= 0)
411 return -1;
412
413 b->bytes += n;
414 }
415
416 if (b->buf[b->offset] == '\r') {
417 assert(b->offset + 1 < b->bytes);
418 if (b->buf[b->offset + 1] == '\n') {
419 b->buf[b->offset] = 0; /* terminate the string */
420 b->offset += 2; /* next line */
421 if (0 < verbosity)
422 puts(*s);
423 return 0;
424 }
425 }
426
427 b->offset++;
428 }
429 /* not reached */
430 }
431
432 __attribute__((format (printf, 1, 2)))
433 static void imap_info(const char *msg, ...)
434 {
435 va_list va;
436
437 if (0 <= verbosity) {
438 va_start(va, msg);
439 vprintf(msg, va);
440 va_end(va);
441 fflush(stdout);
442 }
443 }
444
445 __attribute__((format (printf, 1, 2)))
446 static void imap_warn(const char *msg, ...)
447 {
448 va_list va;
449
450 if (-2 < verbosity) {
451 va_start(va, msg);
452 vfprintf(stderr, msg, va);
453 va_end(va);
454 }
455 }
456
457 static char *next_arg(char **s)
458 {
459 char *ret;
460
461 if (!s || !*s)
462 return NULL;
463 while (isspace((unsigned char) **s))
464 (*s)++;
465 if (!**s) {
466 *s = NULL;
467 return NULL;
468 }
469 if (**s == '"') {
470 ++*s;
471 ret = *s;
472 *s = strchr(*s, '"');
473 } else {
474 ret = *s;
475 while (**s && !isspace((unsigned char) **s))
476 (*s)++;
477 }
478 if (*s) {
479 if (**s)
480 *(*s)++ = 0;
481 if (!**s)
482 *s = NULL;
483 }
484 return ret;
485 }
486
487 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
488 struct imap_cmd_cb *cb,
489 const char *fmt, va_list ap)
490 {
491 struct imap *imap = ctx->imap;
492 struct imap_cmd *cmd;
493 int n;
494 struct strbuf buf = STRBUF_INIT;
495
496 cmd = xmalloc(sizeof(struct imap_cmd));
497 cmd->cmd = xstrvfmt(fmt, ap);
498 cmd->tag = ++imap->nexttag;
499
500 if (cb)
501 cmd->cb = *cb;
502 else
503 memset(&cmd->cb, 0, sizeof(cmd->cb));
504
505 while (imap->literal_pending)
506 get_cmd_result(ctx, NULL);
507
508 if (!cmd->cb.data)
509 strbuf_addf(&buf, "%d %s\r\n", cmd->tag, cmd->cmd);
510 else
511 strbuf_addf(&buf, "%d %s{%d%s}\r\n", cmd->tag, cmd->cmd,
512 cmd->cb.dlen, CAP(LITERALPLUS) ? "+" : "");
513 if (buf.len > INT_MAX)
514 die("imap command overflow!");
515
516 if (0 < verbosity) {
517 if (imap->num_in_progress)
518 printf("(%d in progress) ", imap->num_in_progress);
519 if (!starts_with(cmd->cmd, "LOGIN"))
520 printf(">>> %s", buf.buf);
521 else
522 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
523 }
524 if (socket_write(&imap->buf.sock, buf.buf, buf.len) != buf.len) {
525 free(cmd->cmd);
526 free(cmd);
527 if (cb)
528 free(cb->data);
529 strbuf_release(&buf);
530 return NULL;
531 }
532 strbuf_release(&buf);
533 if (cmd->cb.data) {
534 if (CAP(LITERALPLUS)) {
535 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
536 free(cmd->cb.data);
537 if (n != cmd->cb.dlen ||
538 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
539 free(cmd->cmd);
540 free(cmd);
541 return NULL;
542 }
543 cmd->cb.data = NULL;
544 } else
545 imap->literal_pending = 1;
546 } else if (cmd->cb.cont)
547 imap->literal_pending = 1;
548 cmd->next = NULL;
549 *imap->in_progress_append = cmd;
550 imap->in_progress_append = &cmd->next;
551 imap->num_in_progress++;
552 return cmd;
553 }
554
555 __attribute__((format (printf, 3, 4)))
556 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
557 const char *fmt, ...)
558 {
559 va_list ap;
560 struct imap_cmd *cmdp;
561
562 va_start(ap, fmt);
563 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
564 va_end(ap);
565 if (!cmdp)
566 return RESP_BAD;
567
568 return get_cmd_result(ctx, cmdp);
569 }
570
571 __attribute__((format (printf, 3, 4)))
572 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
573 const char *fmt, ...)
574 {
575 va_list ap;
576 struct imap_cmd *cmdp;
577
578 va_start(ap, fmt);
579 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
580 va_end(ap);
581 if (!cmdp)
582 return DRV_STORE_BAD;
583
584 switch (get_cmd_result(ctx, cmdp)) {
585 case RESP_BAD: return DRV_STORE_BAD;
586 case RESP_NO: return DRV_MSG_BAD;
587 default: return DRV_OK;
588 }
589 }
590
591 static int skip_imap_list_l(char **sp, int level)
592 {
593 char *s = *sp;
594
595 for (;;) {
596 while (isspace((unsigned char)*s))
597 s++;
598 if (level && *s == ')') {
599 s++;
600 break;
601 }
602 if (*s == '(') {
603 /* sublist */
604 s++;
605 if (skip_imap_list_l(&s, level + 1))
606 goto bail;
607 } else if (*s == '"') {
608 /* quoted string */
609 s++;
610 for (; *s != '"'; s++)
611 if (!*s)
612 goto bail;
613 s++;
614 } else {
615 /* atom */
616 for (; *s && !isspace((unsigned char)*s); s++)
617 if (level && *s == ')')
618 break;
619 }
620
621 if (!level)
622 break;
623 if (!*s)
624 goto bail;
625 }
626 *sp = s;
627 return 0;
628
629 bail:
630 return -1;
631 }
632
633 static void skip_list(char **sp)
634 {
635 skip_imap_list_l(sp, 0);
636 }
637
638 static void parse_capability(struct imap *imap, char *cmd)
639 {
640 char *arg;
641 unsigned i;
642
643 imap->caps = 0x80000000;
644 while ((arg = next_arg(&cmd)))
645 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
646 if (!strcmp(cap_list[i], arg))
647 imap->caps |= 1 << i;
648 imap->rcaps = imap->caps;
649 }
650
651 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
652 char *s)
653 {
654 struct imap *imap = ctx->imap;
655 char *arg, *p;
656
657 if (!s || *s != '[')
658 return RESP_OK; /* no response code */
659 s++;
660 if (!(p = strchr(s, ']'))) {
661 fprintf(stderr, "IMAP error: malformed response code\n");
662 return RESP_BAD;
663 }
664 *p++ = 0;
665 arg = next_arg(&s);
666 if (!arg) {
667 fprintf(stderr, "IMAP error: empty response code\n");
668 return RESP_BAD;
669 }
670 if (!strcmp("UIDVALIDITY", arg)) {
671 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
672 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
673 return RESP_BAD;
674 }
675 } else if (!strcmp("UIDNEXT", arg)) {
676 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
677 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
678 return RESP_BAD;
679 }
680 } else if (!strcmp("CAPABILITY", arg)) {
681 parse_capability(imap, s);
682 } else if (!strcmp("ALERT", arg)) {
683 /* RFC2060 says that these messages MUST be displayed
684 * to the user
685 */
686 for (; isspace((unsigned char)*p); p++);
687 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
688 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
689 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
690 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
691 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
692 return RESP_BAD;
693 }
694 }
695 return RESP_OK;
696 }
697
698 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
699 {
700 struct imap *imap = ctx->imap;
701 struct imap_cmd *cmdp, **pcmdp;
702 char *cmd;
703 const char *arg, *arg1;
704 int n, resp, resp2, tag;
705
706 for (;;) {
707 if (buffer_gets(&imap->buf, &cmd))
708 return RESP_BAD;
709
710 arg = next_arg(&cmd);
711 if (!arg) {
712 fprintf(stderr, "IMAP error: empty response\n");
713 return RESP_BAD;
714 }
715 if (*arg == '*') {
716 arg = next_arg(&cmd);
717 if (!arg) {
718 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
719 return RESP_BAD;
720 }
721
722 if (!strcmp("NAMESPACE", arg)) {
723 /* rfc2342 NAMESPACE response. */
724 skip_list(&cmd); /* Personal mailboxes */
725 skip_list(&cmd); /* Others' mailboxes */
726 skip_list(&cmd); /* Shared mailboxes */
727 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
728 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
729 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
730 return resp;
731 } else if (!strcmp("CAPABILITY", arg)) {
732 parse_capability(imap, cmd);
733 } else if ((arg1 = next_arg(&cmd))) {
734 ; /*
735 * Unhandled response-data with at least two words.
736 * Ignore it.
737 *
738 * NEEDSWORK: Previously this case handled '<num> EXISTS'
739 * and '<num> RECENT' but as a probably-unintended side
740 * effect it ignores other unrecognized two-word
741 * responses. imap-send doesn't ever try to read
742 * messages or mailboxes these days, so consider
743 * eliminating this case.
744 */
745 } else {
746 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
747 return RESP_BAD;
748 }
749 } else if (!imap->in_progress) {
750 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
751 return RESP_BAD;
752 } else if (*arg == '+') {
753 /* This can happen only with the last command underway, as
754 it enforces a round-trip. */
755 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
756 offsetof(struct imap_cmd, next));
757 if (cmdp->cb.data) {
758 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
759 FREE_AND_NULL(cmdp->cb.data);
760 if (n != (int)cmdp->cb.dlen)
761 return RESP_BAD;
762 } else if (cmdp->cb.cont) {
763 if (cmdp->cb.cont(ctx, cmd))
764 return RESP_BAD;
765 } else {
766 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
767 return RESP_BAD;
768 }
769 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
770 return RESP_BAD;
771 if (!cmdp->cb.cont)
772 imap->literal_pending = 0;
773 if (!tcmd)
774 return DRV_OK;
775 } else {
776 tag = atoi(arg);
777 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
778 if (cmdp->tag == tag)
779 goto gottag;
780 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
781 return RESP_BAD;
782 gottag:
783 if (!(*pcmdp = cmdp->next))
784 imap->in_progress_append = pcmdp;
785 imap->num_in_progress--;
786 if (cmdp->cb.cont || cmdp->cb.data)
787 imap->literal_pending = 0;
788 arg = next_arg(&cmd);
789 if (!arg)
790 arg = "";
791 if (!strcmp("OK", arg))
792 resp = DRV_OK;
793 else {
794 if (!strcmp("NO", arg))
795 resp = RESP_NO;
796 else /*if (!strcmp("BAD", arg))*/
797 resp = RESP_BAD;
798 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
799 !starts_with(cmdp->cmd, "LOGIN") ?
800 cmdp->cmd : "LOGIN <user> <pass>",
801 arg, cmd ? cmd : "");
802 }
803 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
804 resp = resp2;
805 free(cmdp->cb.data);
806 free(cmdp->cmd);
807 free(cmdp);
808 if (!tcmd || tcmd == cmdp)
809 return resp;
810 }
811 }
812 /* not reached */
813 }
814
815 static void imap_close_server(struct imap_store *ictx)
816 {
817 struct imap *imap = ictx->imap;
818
819 if (imap->buf.sock.fd[0] != -1) {
820 imap_exec(ictx, NULL, "LOGOUT");
821 socket_shutdown(&imap->buf.sock);
822 }
823 free(imap);
824 }
825
826 static void imap_close_store(struct imap_store *ctx)
827 {
828 imap_close_server(ctx);
829 free(ctx);
830 }
831
832 #ifndef NO_OPENSSL
833
834 /*
835 * hexchar() and cram() functions are based on the code from the isync
836 * project (https://isync.sourceforge.io/).
837 */
838 static char hexchar(unsigned int b)
839 {
840 return b < 10 ? '0' + b : 'a' + (b - 10);
841 }
842
843 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
844 static char *cram(const char *challenge_64, const char *user, const char *pass)
845 {
846 int i, resp_len, encoded_len, decoded_len;
847 unsigned char hash[16];
848 char hex[33];
849 char *response, *response_64, *challenge;
850
851 /*
852 * length of challenge_64 (i.e. base-64 encoded string) is a good
853 * enough upper bound for challenge (decoded result).
854 */
855 encoded_len = strlen(challenge_64);
856 challenge = xmalloc(encoded_len);
857 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
858 (unsigned char *)challenge_64, encoded_len);
859 if (decoded_len < 0)
860 die("invalid challenge %s", challenge_64);
861 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
862 die("HMAC error");
863
864 hex[32] = 0;
865 for (i = 0; i < 16; i++) {
866 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
867 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
868 }
869
870 /* response: "<user> <digest in hex>" */
871 response = xstrfmt("%s %s", user, hex);
872 resp_len = strlen(response);
873
874 response_64 = xmallocz(ENCODED_SIZE(resp_len));
875 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
876 (unsigned char *)response, resp_len);
877 if (encoded_len < 0)
878 die("EVP_EncodeBlock error");
879 return (char *)response_64;
880 }
881
882 #else
883
884 static char *cram(const char *challenge_64 UNUSED,
885 const char *user UNUSED,
886 const char *pass UNUSED)
887 {
888 die("If you want to use CRAM-MD5 authenticate method, "
889 "you have to build git-imap-send with OpenSSL library.");
890 }
891
892 #endif
893
894 static int auth_cram_md5(struct imap_store *ctx, const char *prompt)
895 {
896 int ret;
897 char *response;
898
899 response = cram(prompt, ctx->cfg->user, ctx->cfg->pass);
900
901 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
902 if (ret != strlen(response))
903 return error("IMAP error: sending response failed");
904
905 free(response);
906
907 return 0;
908 }
909
910 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
911 {
912 if (srvc->user && srvc->pass)
913 return;
914
915 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
916 cred->host = xstrdup(srvc->host);
917
918 cred->username = xstrdup_or_null(srvc->user);
919 cred->password = xstrdup_or_null(srvc->pass);
920
921 credential_fill(cred, 1);
922
923 if (!srvc->user)
924 srvc->user = xstrdup(cred->username);
925 if (!srvc->pass)
926 srvc->pass = xstrdup(cred->password);
927 }
928
929 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, const char *folder)
930 {
931 struct credential cred = CREDENTIAL_INIT;
932 struct imap_store *ctx;
933 struct imap *imap;
934 char *arg, *rsp;
935 int s = -1, preauth;
936
937 CALLOC_ARRAY(ctx, 1);
938
939 ctx->cfg = srvc;
940 ctx->imap = CALLOC_ARRAY(imap, 1);
941 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
942 imap->in_progress_append = &imap->in_progress;
943
944 /* open connection to IMAP server */
945
946 if (srvc->tunnel) {
947 struct child_process tunnel = CHILD_PROCESS_INIT;
948
949 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
950
951 strvec_push(&tunnel.args, srvc->tunnel);
952 tunnel.use_shell = 1;
953 tunnel.in = -1;
954 tunnel.out = -1;
955 if (start_command(&tunnel))
956 die("cannot start proxy %s", srvc->tunnel);
957
958 imap->buf.sock.fd[0] = tunnel.out;
959 imap->buf.sock.fd[1] = tunnel.in;
960
961 imap_info("ok\n");
962 } else {
963 #ifndef NO_IPV6
964 struct addrinfo hints, *ai0, *ai;
965 int gai;
966 char portstr[6];
967
968 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
969
970 memset(&hints, 0, sizeof(hints));
971 hints.ai_socktype = SOCK_STREAM;
972 hints.ai_protocol = IPPROTO_TCP;
973
974 imap_info("Resolving %s... ", srvc->host);
975 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
976 if (gai) {
977 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
978 goto bail;
979 }
980 imap_info("ok\n");
981
982 for (ai0 = ai; ai; ai = ai->ai_next) {
983 char addr[NI_MAXHOST];
984
985 s = socket(ai->ai_family, ai->ai_socktype,
986 ai->ai_protocol);
987 if (s < 0)
988 continue;
989
990 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
991 sizeof(addr), NULL, 0, NI_NUMERICHOST);
992 imap_info("Connecting to [%s]:%s... ", addr, portstr);
993
994 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
995 close(s);
996 s = -1;
997 perror("connect");
998 continue;
999 }
1000
1001 break;
1002 }
1003 freeaddrinfo(ai0);
1004 #else /* NO_IPV6 */
1005 struct hostent *he;
1006 struct sockaddr_in addr;
1007
1008 memset(&addr, 0, sizeof(addr));
1009 addr.sin_port = htons(srvc->port);
1010 addr.sin_family = AF_INET;
1011
1012 imap_info("Resolving %s... ", srvc->host);
1013 he = gethostbyname(srvc->host);
1014 if (!he) {
1015 perror("gethostbyname");
1016 goto bail;
1017 }
1018 imap_info("ok\n");
1019
1020 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1021
1022 s = socket(PF_INET, SOCK_STREAM, 0);
1023
1024 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1025 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1026 close(s);
1027 s = -1;
1028 perror("connect");
1029 }
1030 #endif
1031 if (s < 0) {
1032 fputs("Error: unable to connect to server.\n", stderr);
1033 goto bail;
1034 }
1035
1036 imap->buf.sock.fd[0] = s;
1037 imap->buf.sock.fd[1] = dup(s);
1038
1039 if (srvc->use_ssl &&
1040 ssl_socket_connect(&imap->buf.sock, srvc, 0)) {
1041 close(s);
1042 goto bail;
1043 }
1044 imap_info("ok\n");
1045 }
1046
1047 /* read the greeting string */
1048 if (buffer_gets(&imap->buf, &rsp)) {
1049 fprintf(stderr, "IMAP error: no greeting response\n");
1050 goto bail;
1051 }
1052 arg = next_arg(&rsp);
1053 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1054 fprintf(stderr, "IMAP error: invalid greeting response\n");
1055 goto bail;
1056 }
1057 preauth = 0;
1058 if (!strcmp("PREAUTH", arg))
1059 preauth = 1;
1060 else if (strcmp("OK", arg) != 0) {
1061 fprintf(stderr, "IMAP error: unknown greeting response\n");
1062 goto bail;
1063 }
1064 parse_response_code(ctx, NULL, rsp);
1065 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1066 goto bail;
1067
1068 if (!preauth) {
1069 #ifndef NO_OPENSSL
1070 if (!srvc->use_ssl && CAP(STARTTLS)) {
1071 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1072 goto bail;
1073 if (ssl_socket_connect(&imap->buf.sock, srvc, 1))
1074 goto bail;
1075 /* capabilities may have changed, so get the new capabilities */
1076 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1077 goto bail;
1078 }
1079 #endif
1080 imap_info("Logging in...\n");
1081 server_fill_credential(srvc, &cred);
1082
1083 if (srvc->auth_method) {
1084 struct imap_cmd_cb cb;
1085
1086 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1087 if (!CAP(AUTH_CRAM_MD5)) {
1088 fprintf(stderr, "You specified "
1089 "CRAM-MD5 as authentication method, "
1090 "but %s doesn't support it.\n", srvc->host);
1091 goto bail;
1092 }
1093 /* CRAM-MD5 */
1094
1095 memset(&cb, 0, sizeof(cb));
1096 cb.cont = auth_cram_md5;
1097 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1098 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1099 goto bail;
1100 }
1101 } else {
1102 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1103 goto bail;
1104 }
1105 } else {
1106 if (CAP(NOLOGIN)) {
1107 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1108 srvc->user, srvc->host);
1109 goto bail;
1110 }
1111 if (!imap->buf.sock.ssl)
1112 imap_warn("*** IMAP Warning *** Password is being "
1113 "sent in the clear\n");
1114 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1115 fprintf(stderr, "IMAP error: LOGIN failed\n");
1116 goto bail;
1117 }
1118 }
1119 } /* !preauth */
1120
1121 if (cred.username)
1122 credential_approve(&cred);
1123 credential_clear(&cred);
1124
1125 /* check the target mailbox exists */
1126 ctx->name = folder;
1127 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1128 case RESP_OK:
1129 /* ok */
1130 break;
1131 case RESP_BAD:
1132 fprintf(stderr, "IMAP error: could not check mailbox\n");
1133 goto out;
1134 case RESP_NO:
1135 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1136 imap_info("Created missing mailbox\n");
1137 } else {
1138 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1139 goto out;
1140 }
1141 break;
1142 }
1143
1144 ctx->prefix = "";
1145 return ctx;
1146
1147 bail:
1148 if (cred.username)
1149 credential_reject(&cred);
1150 credential_clear(&cred);
1151
1152 out:
1153 imap_close_store(ctx);
1154 return NULL;
1155 }
1156
1157 /*
1158 * Insert CR characters as necessary in *msg to ensure that every LF
1159 * character in *msg is preceded by a CR.
1160 */
1161 static void lf_to_crlf(struct strbuf *msg)
1162 {
1163 char *new_msg;
1164 size_t i, j;
1165 char lastc;
1166
1167 /* First pass: tally, in j, the size of the new_msg string: */
1168 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1169 if (msg->buf[i] == '\n' && lastc != '\r')
1170 j++; /* a CR will need to be added here */
1171 lastc = msg->buf[i];
1172 j++;
1173 }
1174
1175 new_msg = xmallocz(j);
1176
1177 /*
1178 * Second pass: write the new_msg string. Note that this loop is
1179 * otherwise identical to the first pass.
1180 */
1181 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1182 if (msg->buf[i] == '\n' && lastc != '\r')
1183 new_msg[j++] = '\r';
1184 lastc = new_msg[j++] = msg->buf[i];
1185 }
1186 strbuf_attach(msg, new_msg, j, j + 1);
1187 }
1188
1189 /*
1190 * Store msg to IMAP. Also detach and free the data from msg->data,
1191 * leaving msg->data empty.
1192 */
1193 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1194 {
1195 struct imap *imap = ctx->imap;
1196 struct imap_cmd_cb cb;
1197 const char *prefix, *box;
1198 int ret;
1199
1200 lf_to_crlf(msg);
1201 memset(&cb, 0, sizeof(cb));
1202
1203 cb.dlen = msg->len;
1204 cb.data = strbuf_detach(msg, NULL);
1205
1206 box = ctx->name;
1207 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1208 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1209 imap->caps = imap->rcaps;
1210 if (ret != DRV_OK)
1211 return ret;
1212
1213 return DRV_OK;
1214 }
1215
1216 static void wrap_in_html(struct strbuf *msg)
1217 {
1218 struct strbuf buf = STRBUF_INIT;
1219 static const char *content_type = "Content-Type: text/html;\n";
1220 static const char *pre_open = "<pre>\n";
1221 static const char *pre_close = "</pre>\n";
1222 const char *body = strstr(msg->buf, "\n\n");
1223
1224 if (!body)
1225 return; /* Headers but no body; no wrapping needed */
1226
1227 body += 2;
1228
1229 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1230 strbuf_addstr(&buf, content_type);
1231 strbuf_addch(&buf, '\n');
1232 strbuf_addstr(&buf, pre_open);
1233 strbuf_addstr_xml_quoted(&buf, body);
1234 strbuf_addstr(&buf, pre_close);
1235
1236 strbuf_release(msg);
1237 *msg = buf;
1238 }
1239
1240 static int count_messages(struct strbuf *all_msgs)
1241 {
1242 int count = 0;
1243 char *p = all_msgs->buf;
1244
1245 while (1) {
1246 if (starts_with(p, "From ")) {
1247 p = strstr(p+5, "\nFrom: ");
1248 if (!p) break;
1249 p = strstr(p+7, "\nDate: ");
1250 if (!p) break;
1251 p = strstr(p+7, "\nSubject: ");
1252 if (!p) break;
1253 p += 10;
1254 count++;
1255 }
1256 p = strstr(p+5, "\nFrom ");
1257 if (!p)
1258 break;
1259 p++;
1260 }
1261 return count;
1262 }
1263
1264 /*
1265 * Copy the next message from all_msgs, starting at offset *ofs, to
1266 * msg. Update *ofs to the start of the following message. Return
1267 * true iff a message was successfully copied.
1268 */
1269 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1270 {
1271 char *p, *data;
1272 size_t len;
1273
1274 if (*ofs >= all_msgs->len)
1275 return 0;
1276
1277 data = &all_msgs->buf[*ofs];
1278 len = all_msgs->len - *ofs;
1279
1280 if (len < 5 || !starts_with(data, "From "))
1281 return 0;
1282
1283 p = strchr(data, '\n');
1284 if (p) {
1285 p++;
1286 len -= p - data;
1287 *ofs += p - data;
1288 data = p;
1289 }
1290
1291 p = strstr(data, "\nFrom ");
1292 if (p)
1293 len = &p[1] - data;
1294
1295 strbuf_add(msg, data, len);
1296 *ofs += len;
1297 return 1;
1298 }
1299
1300 static int git_imap_config(const char *var, const char *val,
1301 const struct config_context *ctx, void *cb)
1302 {
1303 struct imap_server_conf *cfg = cb;
1304
1305 if (!strcmp("imap.sslverify", var)) {
1306 cfg->ssl_verify = git_config_bool(var, val);
1307 } else if (!strcmp("imap.preformattedhtml", var)) {
1308 cfg->use_html = git_config_bool(var, val);
1309 } else if (!strcmp("imap.folder", var)) {
1310 FREE_AND_NULL(cfg->folder);
1311 return git_config_string(&cfg->folder, var, val);
1312 } else if (!strcmp("imap.user", var)) {
1313 FREE_AND_NULL(cfg->folder);
1314 return git_config_string(&cfg->user, var, val);
1315 } else if (!strcmp("imap.pass", var)) {
1316 FREE_AND_NULL(cfg->folder);
1317 return git_config_string(&cfg->pass, var, val);
1318 } else if (!strcmp("imap.tunnel", var)) {
1319 FREE_AND_NULL(cfg->folder);
1320 return git_config_string(&cfg->tunnel, var, val);
1321 } else if (!strcmp("imap.authmethod", var)) {
1322 FREE_AND_NULL(cfg->folder);
1323 return git_config_string(&cfg->auth_method, var, val);
1324 } else if (!strcmp("imap.port", var)) {
1325 cfg->port = git_config_int(var, val, ctx->kvi);
1326 } else if (!strcmp("imap.host", var)) {
1327 if (!val) {
1328 return config_error_nonbool(var);
1329 } else {
1330 if (starts_with(val, "imap:"))
1331 val += 5;
1332 else if (starts_with(val, "imaps:")) {
1333 val += 6;
1334 cfg->use_ssl = 1;
1335 }
1336 if (starts_with(val, "//"))
1337 val += 2;
1338 cfg->host = xstrdup(val);
1339 }
1340 } else {
1341 return git_default_config(var, val, ctx, cb);
1342 }
1343
1344 return 0;
1345 }
1346
1347 static int append_msgs_to_imap(struct imap_server_conf *server,
1348 struct strbuf* all_msgs, int total)
1349 {
1350 struct strbuf msg = STRBUF_INIT;
1351 struct imap_store *ctx = NULL;
1352 int ofs = 0;
1353 int r;
1354 int n = 0;
1355
1356 ctx = imap_open_store(server, server->folder);
1357 if (!ctx) {
1358 fprintf(stderr, "failed to open store\n");
1359 return 1;
1360 }
1361 ctx->name = server->folder;
1362
1363 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1364 while (1) {
1365 unsigned percent = n * 100 / total;
1366
1367 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1368
1369 if (!split_msg(all_msgs, &msg, &ofs))
1370 break;
1371 if (server->use_html)
1372 wrap_in_html(&msg);
1373 r = imap_store_msg(ctx, &msg);
1374 if (r != DRV_OK)
1375 break;
1376 n++;
1377 }
1378 fprintf(stderr, "\n");
1379
1380 imap_close_store(ctx);
1381
1382 return 0;
1383 }
1384
1385 #ifdef USE_CURL_FOR_IMAP_SEND
1386 static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
1387 {
1388 CURL *curl;
1389 struct strbuf path = STRBUF_INIT;
1390 char *uri_encoded_folder;
1391
1392 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1393 die("curl_global_init failed");
1394
1395 curl = curl_easy_init();
1396
1397 if (!curl)
1398 die("curl_easy_init failed");
1399
1400 server_fill_credential(srvc, cred);
1401 curl_easy_setopt(curl, CURLOPT_USERNAME, srvc->user);
1402 curl_easy_setopt(curl, CURLOPT_PASSWORD, srvc->pass);
1403
1404 strbuf_addstr(&path, srvc->use_ssl ? "imaps://" : "imap://");
1405 strbuf_addstr(&path, srvc->host);
1406 if (!path.len || path.buf[path.len - 1] != '/')
1407 strbuf_addch(&path, '/');
1408
1409 uri_encoded_folder = curl_easy_escape(curl, srvc->folder, 0);
1410 if (!uri_encoded_folder)
1411 die("failed to encode server folder");
1412 strbuf_addstr(&path, uri_encoded_folder);
1413 curl_free(uri_encoded_folder);
1414
1415 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1416 strbuf_release(&path);
1417 curl_easy_setopt(curl, CURLOPT_PORT, srvc->port);
1418
1419 if (srvc->auth_method) {
1420 #ifndef GIT_CURL_HAVE_CURLOPT_LOGIN_OPTIONS
1421 warning("No LOGIN_OPTIONS support in this cURL version");
1422 #else
1423 struct strbuf auth = STRBUF_INIT;
1424 strbuf_addstr(&auth, "AUTH=");
1425 strbuf_addstr(&auth, srvc->auth_method);
1426 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1427 strbuf_release(&auth);
1428 #endif
1429 }
1430
1431 if (!srvc->use_ssl)
1432 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1433
1434 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, srvc->ssl_verify);
1435 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, srvc->ssl_verify);
1436
1437 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1438
1439 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1440
1441 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1442 http_trace_curl_no_data();
1443 setup_curl_trace(curl);
1444
1445 return curl;
1446 }
1447
1448 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1449 struct strbuf* all_msgs, int total)
1450 {
1451 int ofs = 0;
1452 int n = 0;
1453 struct buffer msgbuf = { STRBUF_INIT, 0 };
1454 CURL *curl;
1455 CURLcode res = CURLE_OK;
1456 struct credential cred = CREDENTIAL_INIT;
1457
1458 curl = setup_curl(server, &cred);
1459 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1460
1461 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1462 while (1) {
1463 unsigned percent = n * 100 / total;
1464 int prev_len;
1465
1466 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1467
1468 prev_len = msgbuf.buf.len;
1469 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1470 break;
1471 if (server->use_html)
1472 wrap_in_html(&msgbuf.buf);
1473 lf_to_crlf(&msgbuf.buf);
1474
1475 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1476 (curl_off_t)(msgbuf.buf.len-prev_len));
1477
1478 res = curl_easy_perform(curl);
1479
1480 if(res != CURLE_OK) {
1481 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1482 curl_easy_strerror(res));
1483 break;
1484 }
1485
1486 n++;
1487 }
1488 fprintf(stderr, "\n");
1489
1490 curl_easy_cleanup(curl);
1491 curl_global_cleanup();
1492
1493 if (cred.username) {
1494 if (res == CURLE_OK)
1495 credential_approve(&cred);
1496 else if (res == CURLE_LOGIN_DENIED)
1497 credential_reject(&cred);
1498 }
1499
1500 credential_clear(&cred);
1501
1502 return res != CURLE_OK;
1503 }
1504 #endif
1505
1506 int cmd_main(int argc, const char **argv)
1507 {
1508 struct imap_server_conf server = {
1509 .ssl_verify = 1,
1510 };
1511 struct strbuf all_msgs = STRBUF_INIT;
1512 int total;
1513 int nongit_ok;
1514 int ret;
1515
1516 setup_git_directory_gently(&nongit_ok);
1517 git_config(git_imap_config, &server);
1518
1519 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1520
1521 if (argc)
1522 usage_with_options(imap_send_usage, imap_send_options);
1523
1524 #ifndef USE_CURL_FOR_IMAP_SEND
1525 if (use_curl) {
1526 warning("--curl not supported in this build");
1527 use_curl = 0;
1528 }
1529 #elif defined(NO_OPENSSL)
1530 if (!use_curl) {
1531 warning("--no-curl not supported in this build");
1532 use_curl = 1;
1533 }
1534 #endif
1535
1536 if (!server.port)
1537 server.port = server.use_ssl ? 993 : 143;
1538
1539 if (!server.folder) {
1540 fprintf(stderr, "no imap store specified\n");
1541 ret = 1;
1542 goto out;
1543 }
1544 if (!server.host) {
1545 if (!server.tunnel) {
1546 fprintf(stderr, "no imap host specified\n");
1547 ret = 1;
1548 goto out;
1549 }
1550 server.host = xstrdup("tunnel");
1551 }
1552
1553 /* read the messages */
1554 if (strbuf_read(&all_msgs, 0, 0) < 0) {
1555 error_errno(_("could not read from stdin"));
1556 ret = 1;
1557 goto out;
1558 }
1559
1560 if (all_msgs.len == 0) {
1561 fprintf(stderr, "nothing to send\n");
1562 ret = 1;
1563 goto out;
1564 }
1565
1566 total = count_messages(&all_msgs);
1567 if (!total) {
1568 fprintf(stderr, "no messages to send\n");
1569 ret = 1;
1570 goto out;
1571 }
1572
1573 /* write it to the imap server */
1574
1575 if (server.tunnel)
1576 ret = append_msgs_to_imap(&server, &all_msgs, total);
1577 #ifdef USE_CURL_FOR_IMAP_SEND
1578 else if (use_curl)
1579 ret = curl_append_msgs_to_imap(&server, &all_msgs, total);
1580 #endif
1581 else
1582 ret = append_msgs_to_imap(&server, &all_msgs, total);
1583
1584 out:
1585 free(server.tunnel);
1586 free(server.host);
1587 free(server.folder);
1588 free(server.user);
1589 free(server.pass);
1590 free(server.auth_method);
1591 strbuf_release(&all_msgs);
1592 return ret;
1593 }
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