2 * git-imap-send - drops patches into an imap Drafts folder
3 * derived from isync/mbsync - mailbox synchronizer
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
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.
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.
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/>.
24 #include "git-compat-util.h"
26 #include "credential.h"
29 #include "run-command.h"
30 #include "parse-options.h"
31 #if defined(NO_OPENSSL) && !defined(HAVE_OPENSSL_CSPRNG)
34 #ifdef USE_CURL_FOR_IMAP_SEND
38 #if defined(USE_CURL_FOR_IMAP_SEND)
39 /* Always default to curl if it's available. */
40 #define USE_CURL_DEFAULT 1
42 /* We don't have curl, so continue to use the historical implementation */
43 #define USE_CURL_DEFAULT 0
47 static int use_curl
= USE_CURL_DEFAULT
;
49 static const char * const imap_send_usage
[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL
};
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"),
59 #define DRV_MSG_BAD -1
60 #define DRV_BOX_BAD -2
61 #define DRV_STORE_BAD -3
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 *, ...);
68 static char *next_arg(char **);
70 __attribute__((format (printf
, 3, 4)))
71 static int nfsnprintf(char *buf
, int blen
, const char *fmt
, ...);
73 static int nfvasprintf(char **strp
, const char *fmt
, va_list ap
)
78 len
= vsnprintf(tmp
, sizeof(tmp
), fmt
, ap
);
80 die("Fatal: Out of memory");
81 if (len
>= sizeof(tmp
))
82 die("imap command overflow!");
83 *strp
= xmemdupz(tmp
, len
);
87 struct imap_server_conf
{
98 const char *auth_method
;
101 static struct imap_server_conf server
= {
111 struct imap_socket sock
;
120 int uidnext
; /* from SELECT responses */
121 unsigned caps
, rcaps
; /* CAPABILITY results */
123 int nexttag
, num_in_progress
, literal_pending
;
124 struct imap_cmd
*in_progress
, **in_progress_append
;
125 struct imap_buffer buf
; /* this is BIG, so put it last */
129 /* currently open mailbox */
130 const char *name
; /* foreign! maybe preset? */
137 int (*cont
)(struct imap_store
*ctx
, struct imap_cmd
*cmd
, const char *prompt
);
138 void (*done
)(struct imap_store
*ctx
, struct imap_cmd
*cmd
, int response
);
146 struct imap_cmd
*next
;
147 struct imap_cmd_cb cb
;
152 #define CAP(cap) (imap->caps & (1 << (cap)))
163 static const char *cap_list
[] = {
176 static int get_cmd_result(struct imap_store
*ctx
, struct imap_cmd
*tcmd
);
180 static void ssl_socket_perror(const char *func
)
182 fprintf(stderr
, "%s: %s\n", func
, ERR_error_string(ERR_get_error(), NULL
));
186 static void socket_perror(const char *func
, struct imap_socket
*sock
, int ret
)
190 int sslerr
= SSL_get_error(sock
->ssl
, ret
);
194 case SSL_ERROR_SYSCALL
:
195 perror("SSL_connect");
198 ssl_socket_perror("SSL_connect");
207 fprintf(stderr
, "%s: unexpected EOF\n", func
);
212 static int ssl_socket_connect(struct imap_socket
*sock
, int use_tls_only
, int verify
)
214 fprintf(stderr
, "SSL requested but SSL support not compiled in\n");
220 static int host_matches(const char *host
, const char *pattern
)
222 if (pattern
[0] == '*' && pattern
[1] == '.') {
224 if (!(host
= strchr(host
, '.')))
229 return *host
&& *pattern
&& !strcasecmp(host
, pattern
);
232 static int verify_hostname(X509
*cert
, const char *hostname
)
238 STACK_OF(GENERAL_NAME
) *subj_alt_names
;
240 /* try the DNS subjectAltNames */
242 if ((subj_alt_names
= X509_get_ext_d2i(cert
, NID_subject_alt_name
, NULL
, NULL
))) {
243 int num_subj_alt_names
= sk_GENERAL_NAME_num(subj_alt_names
);
244 for (i
= 0; !found
&& i
< num_subj_alt_names
; i
++) {
245 GENERAL_NAME
*subj_alt_name
= sk_GENERAL_NAME_value(subj_alt_names
, i
);
246 if (subj_alt_name
->type
== GEN_DNS
&&
247 strlen((const char *)subj_alt_name
->d
.ia5
->data
) == (size_t)subj_alt_name
->d
.ia5
->length
&&
248 host_matches(hostname
, (const char *)(subj_alt_name
->d
.ia5
->data
)))
251 sk_GENERAL_NAME_pop_free(subj_alt_names
, GENERAL_NAME_free
);
256 /* try the common name */
257 if (!(subj
= X509_get_subject_name(cert
)))
258 return error("cannot get certificate subject");
259 if ((len
= X509_NAME_get_text_by_NID(subj
, NID_commonName
, cname
, sizeof(cname
))) < 0)
260 return error("cannot get certificate common name");
261 if (strlen(cname
) == (size_t)len
&& host_matches(hostname
, cname
))
263 return error("certificate owner '%s' does not match hostname '%s'",
267 static int ssl_socket_connect(struct imap_socket
*sock
, int use_tls_only
, int verify
)
269 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
270 const SSL_METHOD
*meth
;
279 SSL_load_error_strings();
281 meth
= SSLv23_method();
283 ssl_socket_perror("SSLv23_method");
287 ctx
= SSL_CTX_new(meth
);
289 ssl_socket_perror("SSL_CTX_new");
294 SSL_CTX_set_options(ctx
, SSL_OP_NO_SSLv2
| SSL_OP_NO_SSLv3
);
297 SSL_CTX_set_verify(ctx
, SSL_VERIFY_PEER
, NULL
);
299 if (!SSL_CTX_set_default_verify_paths(ctx
)) {
300 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
303 sock
->ssl
= SSL_new(ctx
);
305 ssl_socket_perror("SSL_new");
308 if (!SSL_set_rfd(sock
->ssl
, sock
->fd
[0])) {
309 ssl_socket_perror("SSL_set_rfd");
312 if (!SSL_set_wfd(sock
->ssl
, sock
->fd
[1])) {
313 ssl_socket_perror("SSL_set_wfd");
317 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
320 * OpenSSL does not document this function, but the implementation
321 * returns 1 on success, 0 on failure after calling SSLerr().
323 ret
= SSL_set_tlsext_host_name(sock
->ssl
, server
.host
);
325 warning("SSL_set_tlsext_host_name(%s) failed.", server
.host
);
328 ret
= SSL_connect(sock
->ssl
);
330 socket_perror("SSL_connect", sock
, ret
);
335 /* make sure the hostname matches that of the certificate */
336 cert
= SSL_get_peer_certificate(sock
->ssl
);
338 return error("unable to get peer certificate.");
339 if (verify_hostname(cert
, server
.host
) < 0)
347 static int socket_read(struct imap_socket
*sock
, char *buf
, int len
)
352 n
= SSL_read(sock
->ssl
, buf
, len
);
355 n
= xread(sock
->fd
[0], buf
, len
);
357 socket_perror("read", sock
, n
);
360 sock
->fd
[0] = sock
->fd
[1] = -1;
365 static int socket_write(struct imap_socket
*sock
, const char *buf
, int len
)
370 n
= SSL_write(sock
->ssl
, buf
, len
);
373 n
= write_in_full(sock
->fd
[1], buf
, len
);
375 socket_perror("write", sock
, n
);
378 sock
->fd
[0] = sock
->fd
[1] = -1;
383 static void socket_shutdown(struct imap_socket
*sock
)
387 SSL_shutdown(sock
->ssl
);
395 /* simple line buffering */
396 static int buffer_gets(struct imap_buffer
*b
, char **s
)
399 int start
= b
->offset
;
404 /* make sure we have enough data to read the \r\n sequence */
405 if (b
->offset
+ 1 >= b
->bytes
) {
407 /* shift down used bytes */
410 assert(start
<= b
->bytes
);
411 n
= b
->bytes
- start
;
414 memmove(b
->buf
, b
->buf
+ start
, n
);
420 n
= socket_read(&b
->sock
, b
->buf
+ b
->bytes
,
421 sizeof(b
->buf
) - b
->bytes
);
429 if (b
->buf
[b
->offset
] == '\r') {
430 assert(b
->offset
+ 1 < b
->bytes
);
431 if (b
->buf
[b
->offset
+ 1] == '\n') {
432 b
->buf
[b
->offset
] = 0; /* terminate the string */
433 b
->offset
+= 2; /* next line */
445 __attribute__((format (printf
, 1, 2)))
446 static void imap_info(const char *msg
, ...)
450 if (0 <= verbosity
) {
458 __attribute__((format (printf
, 1, 2)))
459 static void imap_warn(const char *msg
, ...)
463 if (-2 < verbosity
) {
465 vfprintf(stderr
, msg
, va
);
470 static char *next_arg(char **s
)
476 while (isspace((unsigned char) **s
))
485 *s
= strchr(*s
, '"');
488 while (**s
&& !isspace((unsigned char) **s
))
500 __attribute__((format (printf
, 3, 4)))
501 static int nfsnprintf(char *buf
, int blen
, const char *fmt
, ...)
507 if (blen
<= 0 || (unsigned)(ret
= vsnprintf(buf
, blen
, fmt
, va
)) >= (unsigned)blen
)
508 BUG("buffer too small. Please report a bug.");
513 static struct imap_cmd
*issue_imap_cmd(struct imap_store
*ctx
,
514 struct imap_cmd_cb
*cb
,
515 const char *fmt
, va_list ap
)
517 struct imap
*imap
= ctx
->imap
;
518 struct imap_cmd
*cmd
;
522 cmd
= xmalloc(sizeof(struct imap_cmd
));
523 nfvasprintf(&cmd
->cmd
, fmt
, ap
);
524 cmd
->tag
= ++imap
->nexttag
;
529 memset(&cmd
->cb
, 0, sizeof(cmd
->cb
));
531 while (imap
->literal_pending
)
532 get_cmd_result(ctx
, NULL
);
535 bufl
= nfsnprintf(buf
, sizeof(buf
), "%d %s\r\n", cmd
->tag
, cmd
->cmd
);
537 bufl
= nfsnprintf(buf
, sizeof(buf
), "%d %s{%d%s}\r\n",
538 cmd
->tag
, cmd
->cmd
, cmd
->cb
.dlen
,
539 CAP(LITERALPLUS
) ? "+" : "");
542 if (imap
->num_in_progress
)
543 printf("(%d in progress) ", imap
->num_in_progress
);
544 if (!starts_with(cmd
->cmd
, "LOGIN"))
545 printf(">>> %s", buf
);
547 printf(">>> %d LOGIN <user> <pass>\n", cmd
->tag
);
549 if (socket_write(&imap
->buf
.sock
, buf
, bufl
) != bufl
) {
557 if (CAP(LITERALPLUS
)) {
558 n
= socket_write(&imap
->buf
.sock
, cmd
->cb
.data
, cmd
->cb
.dlen
);
560 if (n
!= cmd
->cb
.dlen
||
561 socket_write(&imap
->buf
.sock
, "\r\n", 2) != 2) {
568 imap
->literal_pending
= 1;
569 } else if (cmd
->cb
.cont
)
570 imap
->literal_pending
= 1;
572 *imap
->in_progress_append
= cmd
;
573 imap
->in_progress_append
= &cmd
->next
;
574 imap
->num_in_progress
++;
578 __attribute__((format (printf
, 3, 4)))
579 static int imap_exec(struct imap_store
*ctx
, struct imap_cmd_cb
*cb
,
580 const char *fmt
, ...)
583 struct imap_cmd
*cmdp
;
586 cmdp
= issue_imap_cmd(ctx
, cb
, fmt
, ap
);
591 return get_cmd_result(ctx
, cmdp
);
594 __attribute__((format (printf
, 3, 4)))
595 static int imap_exec_m(struct imap_store
*ctx
, struct imap_cmd_cb
*cb
,
596 const char *fmt
, ...)
599 struct imap_cmd
*cmdp
;
602 cmdp
= issue_imap_cmd(ctx
, cb
, fmt
, ap
);
605 return DRV_STORE_BAD
;
607 switch (get_cmd_result(ctx
, cmdp
)) {
608 case RESP_BAD
: return DRV_STORE_BAD
;
609 case RESP_NO
: return DRV_MSG_BAD
;
610 default: return DRV_OK
;
614 static int skip_imap_list_l(char **sp
, int level
)
619 while (isspace((unsigned char)*s
))
621 if (level
&& *s
== ')') {
628 if (skip_imap_list_l(&s
, level
+ 1))
630 } else if (*s
== '"') {
633 for (; *s
!= '"'; s
++)
639 for (; *s
&& !isspace((unsigned char)*s
); s
++)
640 if (level
&& *s
== ')')
656 static void skip_list(char **sp
)
658 skip_imap_list_l(sp
, 0);
661 static void parse_capability(struct imap
*imap
, char *cmd
)
666 imap
->caps
= 0x80000000;
667 while ((arg
= next_arg(&cmd
)))
668 for (i
= 0; i
< ARRAY_SIZE(cap_list
); i
++)
669 if (!strcmp(cap_list
[i
], arg
))
670 imap
->caps
|= 1 << i
;
671 imap
->rcaps
= imap
->caps
;
674 static int parse_response_code(struct imap_store
*ctx
, struct imap_cmd_cb
*cb
,
677 struct imap
*imap
= ctx
->imap
;
681 return RESP_OK
; /* no response code */
683 if (!(p
= strchr(s
, ']'))) {
684 fprintf(stderr
, "IMAP error: malformed response code\n");
690 fprintf(stderr
, "IMAP error: empty response code\n");
693 if (!strcmp("UIDVALIDITY", arg
)) {
694 if (!(arg
= next_arg(&s
)) || !(ctx
->uidvalidity
= atoi(arg
))) {
695 fprintf(stderr
, "IMAP error: malformed UIDVALIDITY status\n");
698 } else if (!strcmp("UIDNEXT", arg
)) {
699 if (!(arg
= next_arg(&s
)) || !(imap
->uidnext
= atoi(arg
))) {
700 fprintf(stderr
, "IMAP error: malformed NEXTUID status\n");
703 } else if (!strcmp("CAPABILITY", arg
)) {
704 parse_capability(imap
, s
);
705 } else if (!strcmp("ALERT", arg
)) {
706 /* RFC2060 says that these messages MUST be displayed
709 for (; isspace((unsigned char)*p
); p
++);
710 fprintf(stderr
, "*** IMAP ALERT *** %s\n", p
);
711 } else if (cb
&& cb
->ctx
&& !strcmp("APPENDUID", arg
)) {
712 if (!(arg
= next_arg(&s
)) || !(ctx
->uidvalidity
= atoi(arg
)) ||
713 !(arg
= next_arg(&s
)) || !(*(int *)cb
->ctx
= atoi(arg
))) {
714 fprintf(stderr
, "IMAP error: malformed APPENDUID status\n");
721 static int get_cmd_result(struct imap_store
*ctx
, struct imap_cmd
*tcmd
)
723 struct imap
*imap
= ctx
->imap
;
724 struct imap_cmd
*cmdp
, **pcmdp
;
726 const char *arg
, *arg1
;
727 int n
, resp
, resp2
, tag
;
730 if (buffer_gets(&imap
->buf
, &cmd
))
733 arg
= next_arg(&cmd
);
735 fprintf(stderr
, "IMAP error: empty response\n");
739 arg
= next_arg(&cmd
);
741 fprintf(stderr
, "IMAP error: unable to parse untagged response\n");
745 if (!strcmp("NAMESPACE", arg
)) {
746 /* rfc2342 NAMESPACE response. */
747 skip_list(&cmd
); /* Personal mailboxes */
748 skip_list(&cmd
); /* Others' mailboxes */
749 skip_list(&cmd
); /* Shared mailboxes */
750 } else if (!strcmp("OK", arg
) || !strcmp("BAD", arg
) ||
751 !strcmp("NO", arg
) || !strcmp("BYE", arg
)) {
752 if ((resp
= parse_response_code(ctx
, NULL
, cmd
)) != RESP_OK
)
754 } else if (!strcmp("CAPABILITY", arg
)) {
755 parse_capability(imap
, cmd
);
756 } else if ((arg1
= next_arg(&cmd
))) {
758 * Unhandled response-data with at least two words.
761 * NEEDSWORK: Previously this case handled '<num> EXISTS'
762 * and '<num> RECENT' but as a probably-unintended side
763 * effect it ignores other unrecognized two-word
764 * responses. imap-send doesn't ever try to read
765 * messages or mailboxes these days, so consider
766 * eliminating this case.
769 fprintf(stderr
, "IMAP error: unable to parse untagged response\n");
772 } else if (!imap
->in_progress
) {
773 fprintf(stderr
, "IMAP error: unexpected reply: %s %s\n", arg
, cmd
? cmd
: "");
775 } else if (*arg
== '+') {
776 /* This can happen only with the last command underway, as
777 it enforces a round-trip. */
778 cmdp
= (struct imap_cmd
*)((char *)imap
->in_progress_append
-
779 offsetof(struct imap_cmd
, next
));
781 n
= socket_write(&imap
->buf
.sock
, cmdp
->cb
.data
, cmdp
->cb
.dlen
);
782 FREE_AND_NULL(cmdp
->cb
.data
);
783 if (n
!= (int)cmdp
->cb
.dlen
)
785 } else if (cmdp
->cb
.cont
) {
786 if (cmdp
->cb
.cont(ctx
, cmdp
, cmd
))
789 fprintf(stderr
, "IMAP error: unexpected command continuation request\n");
792 if (socket_write(&imap
->buf
.sock
, "\r\n", 2) != 2)
795 imap
->literal_pending
= 0;
800 for (pcmdp
= &imap
->in_progress
; (cmdp
= *pcmdp
); pcmdp
= &cmdp
->next
)
801 if (cmdp
->tag
== tag
)
803 fprintf(stderr
, "IMAP error: unexpected tag %s\n", arg
);
806 if (!(*pcmdp
= cmdp
->next
))
807 imap
->in_progress_append
= pcmdp
;
808 imap
->num_in_progress
--;
809 if (cmdp
->cb
.cont
|| cmdp
->cb
.data
)
810 imap
->literal_pending
= 0;
811 arg
= next_arg(&cmd
);
814 if (!strcmp("OK", arg
))
817 if (!strcmp("NO", arg
))
819 else /*if (!strcmp("BAD", arg))*/
821 fprintf(stderr
, "IMAP command '%s' returned response (%s) - %s\n",
822 !starts_with(cmdp
->cmd
, "LOGIN") ?
823 cmdp
->cmd
: "LOGIN <user> <pass>",
824 arg
, cmd
? cmd
: "");
826 if ((resp2
= parse_response_code(ctx
, &cmdp
->cb
, cmd
)) > resp
)
829 cmdp
->cb
.done(ctx
, cmdp
, resp
);
833 if (!tcmd
|| tcmd
== cmdp
)
840 static void imap_close_server(struct imap_store
*ictx
)
842 struct imap
*imap
= ictx
->imap
;
844 if (imap
->buf
.sock
.fd
[0] != -1) {
845 imap_exec(ictx
, NULL
, "LOGOUT");
846 socket_shutdown(&imap
->buf
.sock
);
851 static void imap_close_store(struct imap_store
*ctx
)
853 imap_close_server(ctx
);
860 * hexchar() and cram() functions are based on the code from the isync
861 * project (http://isync.sf.net/).
863 static char hexchar(unsigned int b
)
865 return b
< 10 ? '0' + b
: 'a' + (b
- 10);
868 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
869 static char *cram(const char *challenge_64
, const char *user
, const char *pass
)
871 int i
, resp_len
, encoded_len
, decoded_len
;
872 unsigned char hash
[16];
874 char *response
, *response_64
, *challenge
;
877 * length of challenge_64 (i.e. base-64 encoded string) is a good
878 * enough upper bound for challenge (decoded result).
880 encoded_len
= strlen(challenge_64
);
881 challenge
= xmalloc(encoded_len
);
882 decoded_len
= EVP_DecodeBlock((unsigned char *)challenge
,
883 (unsigned char *)challenge_64
, encoded_len
);
885 die("invalid challenge %s", challenge_64
);
886 if (!HMAC(EVP_md5(), pass
, strlen(pass
), (unsigned char *)challenge
, decoded_len
, hash
, NULL
))
890 for (i
= 0; i
< 16; i
++) {
891 hex
[2 * i
] = hexchar((hash
[i
] >> 4) & 0xf);
892 hex
[2 * i
+ 1] = hexchar(hash
[i
] & 0xf);
895 /* response: "<user> <digest in hex>" */
896 response
= xstrfmt("%s %s", user
, hex
);
897 resp_len
= strlen(response
);
899 response_64
= xmallocz(ENCODED_SIZE(resp_len
));
900 encoded_len
= EVP_EncodeBlock((unsigned char *)response_64
,
901 (unsigned char *)response
, resp_len
);
903 die("EVP_EncodeBlock error");
904 return (char *)response_64
;
909 static char *cram(const char *challenge_64
, const char *user
, const char *pass
)
911 die("If you want to use CRAM-MD5 authenticate method, "
912 "you have to build git-imap-send with OpenSSL library.");
917 static int auth_cram_md5(struct imap_store
*ctx
, struct imap_cmd
*cmd
, const char *prompt
)
922 response
= cram(prompt
, server
.user
, server
.pass
);
924 ret
= socket_write(&ctx
->imap
->buf
.sock
, response
, strlen(response
));
925 if (ret
!= strlen(response
))
926 return error("IMAP error: sending response failed");
933 static void server_fill_credential(struct imap_server_conf
*srvc
, struct credential
*cred
)
935 if (srvc
->user
&& srvc
->pass
)
938 cred
->protocol
= xstrdup(srvc
->use_ssl
? "imaps" : "imap");
939 cred
->host
= xstrdup(srvc
->host
);
941 cred
->username
= xstrdup_or_null(srvc
->user
);
942 cred
->password
= xstrdup_or_null(srvc
->pass
);
944 credential_fill(cred
);
947 srvc
->user
= xstrdup(cred
->username
);
949 srvc
->pass
= xstrdup(cred
->password
);
952 static struct imap_store
*imap_open_store(struct imap_server_conf
*srvc
, const char *folder
)
954 struct credential cred
= CREDENTIAL_INIT
;
955 struct imap_store
*ctx
;
960 CALLOC_ARRAY(ctx
, 1);
962 ctx
->imap
= CALLOC_ARRAY(imap
, 1);
963 imap
->buf
.sock
.fd
[0] = imap
->buf
.sock
.fd
[1] = -1;
964 imap
->in_progress_append
= &imap
->in_progress
;
966 /* open connection to IMAP server */
969 struct child_process tunnel
= CHILD_PROCESS_INIT
;
971 imap_info("Starting tunnel '%s'... ", srvc
->tunnel
);
973 strvec_push(&tunnel
.args
, srvc
->tunnel
);
974 tunnel
.use_shell
= 1;
977 if (start_command(&tunnel
))
978 die("cannot start proxy %s", srvc
->tunnel
);
980 imap
->buf
.sock
.fd
[0] = tunnel
.out
;
981 imap
->buf
.sock
.fd
[1] = tunnel
.in
;
986 struct addrinfo hints
, *ai0
, *ai
;
990 xsnprintf(portstr
, sizeof(portstr
), "%d", srvc
->port
);
992 memset(&hints
, 0, sizeof(hints
));
993 hints
.ai_socktype
= SOCK_STREAM
;
994 hints
.ai_protocol
= IPPROTO_TCP
;
996 imap_info("Resolving %s... ", srvc
->host
);
997 gai
= getaddrinfo(srvc
->host
, portstr
, &hints
, &ai
);
999 fprintf(stderr
, "getaddrinfo: %s\n", gai_strerror(gai
));
1004 for (ai0
= ai
; ai
; ai
= ai
->ai_next
) {
1005 char addr
[NI_MAXHOST
];
1007 s
= socket(ai
->ai_family
, ai
->ai_socktype
,
1012 getnameinfo(ai
->ai_addr
, ai
->ai_addrlen
, addr
,
1013 sizeof(addr
), NULL
, 0, NI_NUMERICHOST
);
1014 imap_info("Connecting to [%s]:%s... ", addr
, portstr
);
1016 if (connect(s
, ai
->ai_addr
, ai
->ai_addrlen
) < 0) {
1028 struct sockaddr_in addr
;
1030 memset(&addr
, 0, sizeof(addr
));
1031 addr
.sin_port
= htons(srvc
->port
);
1032 addr
.sin_family
= AF_INET
;
1034 imap_info("Resolving %s... ", srvc
->host
);
1035 he
= gethostbyname(srvc
->host
);
1037 perror("gethostbyname");
1042 addr
.sin_addr
.s_addr
= *((int *) he
->h_addr_list
[0]);
1044 s
= socket(PF_INET
, SOCK_STREAM
, 0);
1046 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr
.sin_addr
), ntohs(addr
.sin_port
));
1047 if (connect(s
, (struct sockaddr
*)&addr
, sizeof(addr
))) {
1054 fputs("Error: unable to connect to server.\n", stderr
);
1058 imap
->buf
.sock
.fd
[0] = s
;
1059 imap
->buf
.sock
.fd
[1] = dup(s
);
1061 if (srvc
->use_ssl
&&
1062 ssl_socket_connect(&imap
->buf
.sock
, 0, srvc
->ssl_verify
)) {
1069 /* read the greeting string */
1070 if (buffer_gets(&imap
->buf
, &rsp
)) {
1071 fprintf(stderr
, "IMAP error: no greeting response\n");
1074 arg
= next_arg(&rsp
);
1075 if (!arg
|| *arg
!= '*' || (arg
= next_arg(&rsp
)) == NULL
) {
1076 fprintf(stderr
, "IMAP error: invalid greeting response\n");
1080 if (!strcmp("PREAUTH", arg
))
1082 else if (strcmp("OK", arg
) != 0) {
1083 fprintf(stderr
, "IMAP error: unknown greeting response\n");
1086 parse_response_code(ctx
, NULL
, rsp
);
1087 if (!imap
->caps
&& imap_exec(ctx
, NULL
, "CAPABILITY") != RESP_OK
)
1092 if (!srvc
->use_ssl
&& CAP(STARTTLS
)) {
1093 if (imap_exec(ctx
, NULL
, "STARTTLS") != RESP_OK
)
1095 if (ssl_socket_connect(&imap
->buf
.sock
, 1,
1098 /* capabilities may have changed, so get the new capabilities */
1099 if (imap_exec(ctx
, NULL
, "CAPABILITY") != RESP_OK
)
1103 imap_info("Logging in...\n");
1104 server_fill_credential(srvc
, &cred
);
1106 if (srvc
->auth_method
) {
1107 struct imap_cmd_cb cb
;
1109 if (!strcmp(srvc
->auth_method
, "CRAM-MD5")) {
1110 if (!CAP(AUTH_CRAM_MD5
)) {
1111 fprintf(stderr
, "You specified "
1112 "CRAM-MD5 as authentication method, "
1113 "but %s doesn't support it.\n", srvc
->host
);
1118 memset(&cb
, 0, sizeof(cb
));
1119 cb
.cont
= auth_cram_md5
;
1120 if (imap_exec(ctx
, &cb
, "AUTHENTICATE CRAM-MD5") != RESP_OK
) {
1121 fprintf(stderr
, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1125 fprintf(stderr
, "Unknown authentication method:%s\n", srvc
->host
);
1130 fprintf(stderr
, "Skipping account %s@%s, server forbids LOGIN\n",
1131 srvc
->user
, srvc
->host
);
1134 if (!imap
->buf
.sock
.ssl
)
1135 imap_warn("*** IMAP Warning *** Password is being "
1136 "sent in the clear\n");
1137 if (imap_exec(ctx
, NULL
, "LOGIN \"%s\" \"%s\"", srvc
->user
, srvc
->pass
) != RESP_OK
) {
1138 fprintf(stderr
, "IMAP error: LOGIN failed\n");
1145 credential_approve(&cred
);
1146 credential_clear(&cred
);
1148 /* check the target mailbox exists */
1150 switch (imap_exec(ctx
, NULL
, "EXAMINE \"%s\"", ctx
->name
)) {
1155 fprintf(stderr
, "IMAP error: could not check mailbox\n");
1158 if (imap_exec(ctx
, NULL
, "CREATE \"%s\"", ctx
->name
) == RESP_OK
) {
1159 imap_info("Created missing mailbox\n");
1161 fprintf(stderr
, "IMAP error: could not create missing mailbox\n");
1172 credential_reject(&cred
);
1173 credential_clear(&cred
);
1176 imap_close_store(ctx
);
1181 * Insert CR characters as necessary in *msg to ensure that every LF
1182 * character in *msg is preceded by a CR.
1184 static void lf_to_crlf(struct strbuf
*msg
)
1190 /* First pass: tally, in j, the size of the new_msg string: */
1191 for (i
= j
= 0, lastc
= '\0'; i
< msg
->len
; i
++) {
1192 if (msg
->buf
[i
] == '\n' && lastc
!= '\r')
1193 j
++; /* a CR will need to be added here */
1194 lastc
= msg
->buf
[i
];
1198 new_msg
= xmallocz(j
);
1201 * Second pass: write the new_msg string. Note that this loop is
1202 * otherwise identical to the first pass.
1204 for (i
= j
= 0, lastc
= '\0'; i
< msg
->len
; i
++) {
1205 if (msg
->buf
[i
] == '\n' && lastc
!= '\r')
1206 new_msg
[j
++] = '\r';
1207 lastc
= new_msg
[j
++] = msg
->buf
[i
];
1209 strbuf_attach(msg
, new_msg
, j
, j
+ 1);
1213 * Store msg to IMAP. Also detach and free the data from msg->data,
1214 * leaving msg->data empty.
1216 static int imap_store_msg(struct imap_store
*ctx
, struct strbuf
*msg
)
1218 struct imap
*imap
= ctx
->imap
;
1219 struct imap_cmd_cb cb
;
1220 const char *prefix
, *box
;
1224 memset(&cb
, 0, sizeof(cb
));
1227 cb
.data
= strbuf_detach(msg
, NULL
);
1230 prefix
= !strcmp(box
, "INBOX") ? "" : ctx
->prefix
;
1231 ret
= imap_exec_m(ctx
, &cb
, "APPEND \"%s%s\" ", prefix
, box
);
1232 imap
->caps
= imap
->rcaps
;
1239 static void wrap_in_html(struct strbuf
*msg
)
1241 struct strbuf buf
= STRBUF_INIT
;
1242 static char *content_type
= "Content-Type: text/html;\n";
1243 static char *pre_open
= "<pre>\n";
1244 static char *pre_close
= "</pre>\n";
1245 const char *body
= strstr(msg
->buf
, "\n\n");
1248 return; /* Headers but no body; no wrapping needed */
1252 strbuf_add(&buf
, msg
->buf
, body
- msg
->buf
- 1);
1253 strbuf_addstr(&buf
, content_type
);
1254 strbuf_addch(&buf
, '\n');
1255 strbuf_addstr(&buf
, pre_open
);
1256 strbuf_addstr_xml_quoted(&buf
, body
);
1257 strbuf_addstr(&buf
, pre_close
);
1259 strbuf_release(msg
);
1263 static int count_messages(struct strbuf
*all_msgs
)
1266 char *p
= all_msgs
->buf
;
1269 if (starts_with(p
, "From ")) {
1270 p
= strstr(p
+5, "\nFrom: ");
1272 p
= strstr(p
+7, "\nDate: ");
1274 p
= strstr(p
+7, "\nSubject: ");
1279 p
= strstr(p
+5, "\nFrom ");
1288 * Copy the next message from all_msgs, starting at offset *ofs, to
1289 * msg. Update *ofs to the start of the following message. Return
1290 * true iff a message was successfully copied.
1292 static int split_msg(struct strbuf
*all_msgs
, struct strbuf
*msg
, int *ofs
)
1297 if (*ofs
>= all_msgs
->len
)
1300 data
= &all_msgs
->buf
[*ofs
];
1301 len
= all_msgs
->len
- *ofs
;
1303 if (len
< 5 || !starts_with(data
, "From "))
1306 p
= strchr(data
, '\n');
1314 p
= strstr(data
, "\nFrom ");
1318 strbuf_add(msg
, data
, len
);
1323 static int git_imap_config(const char *var
, const char *val
, void *cb
)
1326 if (!strcmp("imap.sslverify", var
))
1327 server
.ssl_verify
= git_config_bool(var
, val
);
1328 else if (!strcmp("imap.preformattedhtml", var
))
1329 server
.use_html
= git_config_bool(var
, val
);
1330 else if (!strcmp("imap.folder", var
))
1331 return git_config_string(&server
.folder
, var
, val
);
1332 else if (!strcmp("imap.user", var
))
1333 return git_config_string(&server
.user
, var
, val
);
1334 else if (!strcmp("imap.pass", var
))
1335 return git_config_string(&server
.pass
, var
, val
);
1336 else if (!strcmp("imap.tunnel", var
))
1337 return git_config_string(&server
.tunnel
, var
, val
);
1338 else if (!strcmp("imap.authmethod", var
))
1339 return git_config_string(&server
.auth_method
, var
, val
);
1340 else if (!strcmp("imap.port", var
))
1341 server
.port
= git_config_int(var
, val
);
1342 else if (!strcmp("imap.host", var
)) {
1344 git_die_config("imap.host", "Missing value for 'imap.host'");
1346 if (starts_with(val
, "imap:"))
1348 else if (starts_with(val
, "imaps:")) {
1352 if (starts_with(val
, "//"))
1354 server
.host
= xstrdup(val
);
1357 return git_default_config(var
, val
, cb
);
1362 static int append_msgs_to_imap(struct imap_server_conf
*server
,
1363 struct strbuf
* all_msgs
, int total
)
1365 struct strbuf msg
= STRBUF_INIT
;
1366 struct imap_store
*ctx
= NULL
;
1371 ctx
= imap_open_store(server
, server
->folder
);
1373 fprintf(stderr
, "failed to open store\n");
1376 ctx
->name
= server
->folder
;
1378 fprintf(stderr
, "sending %d message%s\n", total
, (total
!= 1) ? "s" : "");
1380 unsigned percent
= n
* 100 / total
;
1382 fprintf(stderr
, "%4u%% (%d/%d) done\r", percent
, n
, total
);
1384 if (!split_msg(all_msgs
, &msg
, &ofs
))
1386 if (server
->use_html
)
1388 r
= imap_store_msg(ctx
, &msg
);
1393 fprintf(stderr
, "\n");
1395 imap_close_store(ctx
);
1400 #ifdef USE_CURL_FOR_IMAP_SEND
1401 static CURL
*setup_curl(struct imap_server_conf
*srvc
, struct credential
*cred
)
1404 struct strbuf path
= STRBUF_INIT
;
1405 char *uri_encoded_folder
;
1407 if (curl_global_init(CURL_GLOBAL_ALL
) != CURLE_OK
)
1408 die("curl_global_init failed");
1410 curl
= curl_easy_init();
1413 die("curl_easy_init failed");
1415 server_fill_credential(&server
, cred
);
1416 curl_easy_setopt(curl
, CURLOPT_USERNAME
, server
.user
);
1417 curl_easy_setopt(curl
, CURLOPT_PASSWORD
, server
.pass
);
1419 strbuf_addstr(&path
, server
.use_ssl
? "imaps://" : "imap://");
1420 strbuf_addstr(&path
, server
.host
);
1421 if (!path
.len
|| path
.buf
[path
.len
- 1] != '/')
1422 strbuf_addch(&path
, '/');
1424 uri_encoded_folder
= curl_easy_escape(curl
, server
.folder
, 0);
1425 if (!uri_encoded_folder
)
1426 die("failed to encode server folder");
1427 strbuf_addstr(&path
, uri_encoded_folder
);
1428 curl_free(uri_encoded_folder
);
1430 curl_easy_setopt(curl
, CURLOPT_URL
, path
.buf
);
1431 strbuf_release(&path
);
1432 curl_easy_setopt(curl
, CURLOPT_PORT
, server
.port
);
1434 if (server
.auth_method
) {
1435 #ifndef GIT_CURL_HAVE_CURLOPT_LOGIN_OPTIONS
1436 warning("No LOGIN_OPTIONS support in this cURL version");
1438 struct strbuf auth
= STRBUF_INIT
;
1439 strbuf_addstr(&auth
, "AUTH=");
1440 strbuf_addstr(&auth
, server
.auth_method
);
1441 curl_easy_setopt(curl
, CURLOPT_LOGIN_OPTIONS
, auth
.buf
);
1442 strbuf_release(&auth
);
1446 if (!server
.use_ssl
)
1447 curl_easy_setopt(curl
, CURLOPT_USE_SSL
, (long)CURLUSESSL_TRY
);
1449 curl_easy_setopt(curl
, CURLOPT_SSL_VERIFYPEER
, server
.ssl_verify
);
1450 curl_easy_setopt(curl
, CURLOPT_SSL_VERIFYHOST
, server
.ssl_verify
);
1452 curl_easy_setopt(curl
, CURLOPT_READFUNCTION
, fread_buffer
);
1454 curl_easy_setopt(curl
, CURLOPT_UPLOAD
, 1L);
1456 if (0 < verbosity
|| getenv("GIT_CURL_VERBOSE"))
1457 http_trace_curl_no_data();
1458 setup_curl_trace(curl
);
1463 static int curl_append_msgs_to_imap(struct imap_server_conf
*server
,
1464 struct strbuf
* all_msgs
, int total
)
1468 struct buffer msgbuf
= { STRBUF_INIT
, 0 };
1470 CURLcode res
= CURLE_OK
;
1471 struct credential cred
= CREDENTIAL_INIT
;
1473 curl
= setup_curl(server
, &cred
);
1474 curl_easy_setopt(curl
, CURLOPT_READDATA
, &msgbuf
);
1476 fprintf(stderr
, "sending %d message%s\n", total
, (total
!= 1) ? "s" : "");
1478 unsigned percent
= n
* 100 / total
;
1481 fprintf(stderr
, "%4u%% (%d/%d) done\r", percent
, n
, total
);
1483 prev_len
= msgbuf
.buf
.len
;
1484 if (!split_msg(all_msgs
, &msgbuf
.buf
, &ofs
))
1486 if (server
->use_html
)
1487 wrap_in_html(&msgbuf
.buf
);
1488 lf_to_crlf(&msgbuf
.buf
);
1490 curl_easy_setopt(curl
, CURLOPT_INFILESIZE_LARGE
,
1491 (curl_off_t
)(msgbuf
.buf
.len
-prev_len
));
1493 res
= curl_easy_perform(curl
);
1495 if(res
!= CURLE_OK
) {
1496 fprintf(stderr
, "curl_easy_perform() failed: %s\n",
1497 curl_easy_strerror(res
));
1503 fprintf(stderr
, "\n");
1505 curl_easy_cleanup(curl
);
1506 curl_global_cleanup();
1508 if (cred
.username
) {
1509 if (res
== CURLE_OK
)
1510 credential_approve(&cred
);
1511 else if (res
== CURLE_LOGIN_DENIED
)
1512 credential_reject(&cred
);
1515 credential_clear(&cred
);
1517 return res
!= CURLE_OK
;
1521 int cmd_main(int argc
, const char **argv
)
1523 struct strbuf all_msgs
= STRBUF_INIT
;
1527 setup_git_directory_gently(&nongit_ok
);
1528 git_config(git_imap_config
, NULL
);
1530 argc
= parse_options(argc
, (const char **)argv
, "", imap_send_options
, imap_send_usage
, 0);
1533 usage_with_options(imap_send_usage
, imap_send_options
);
1535 #ifndef USE_CURL_FOR_IMAP_SEND
1537 warning("--curl not supported in this build");
1540 #elif defined(NO_OPENSSL)
1542 warning("--no-curl not supported in this build");
1548 server
.port
= server
.use_ssl
? 993 : 143;
1550 if (!server
.folder
) {
1551 fprintf(stderr
, "no imap store specified\n");
1555 if (!server
.tunnel
) {
1556 fprintf(stderr
, "no imap host specified\n");
1559 server
.host
= "tunnel";
1562 /* read the messages */
1563 if (strbuf_read(&all_msgs
, 0, 0) < 0) {
1564 error_errno(_("could not read from stdin"));
1568 if (all_msgs
.len
== 0) {
1569 fprintf(stderr
, "nothing to send\n");
1573 total
= count_messages(&all_msgs
);
1575 fprintf(stderr
, "no messages to send\n");
1579 /* write it to the imap server */
1582 return append_msgs_to_imap(&server
, &all_msgs
, total
);
1584 #ifdef USE_CURL_FOR_IMAP_SEND
1586 return curl_append_msgs_to_imap(&server
, &all_msgs
, total
);
1589 return append_msgs_to_imap(&server
, &all_msgs
, total
);