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, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "run-command.h"
32 #include <openssl/evp.h>
33 #include <openssl/hmac.h>
34 #include <openssl/x509v3.h>
37 static const char imap_send_usage[] = "git imap-send < <mbox>";
41 #define DRV_MSG_BAD -1
42 #define DRV_BOX_BAD -2
43 #define DRV_STORE_BAD -3
45 static int Verbose, Quiet;
47 __attribute__((format (printf, 1, 2)))
48 static void imap_info(const char *, ...);
49 __attribute__((format (printf, 1, 2)))
50 static void imap_warn(const char *, ...);
52 static char *next_arg(char **);
54 __attribute__((format (printf, 3, 4)))
55 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
57 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
62 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
64 die("Fatal: Out of memory");
65 if (len >= sizeof(tmp))
66 die("imap command overflow!");
67 *strp = xmemdupz(tmp, len);
71 struct imap_server_conf {
84 static struct imap_server_conf server = {
94 NULL, /* auth_method */
103 struct imap_socket sock;
112 int uidnext; /* from SELECT responses */
113 unsigned caps, rcaps; /* CAPABILITY results */
115 int nexttag, num_in_progress, literal_pending;
116 struct imap_cmd *in_progress, **in_progress_append;
117 struct imap_buffer buf; /* this is BIG, so put it last */
121 /* currently open mailbox */
122 const char *name; /* foreign! maybe preset? */
129 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
130 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
135 unsigned create:1, trycreate:1;
139 struct imap_cmd *next;
140 struct imap_cmd_cb cb;
145 #define CAP(cap) (imap->caps & (1 << (cap)))
156 static const char *cap_list[] = {
169 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
173 static void ssl_socket_perror(const char *func)
175 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
179 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
183 int sslerr = SSL_get_error(sock->ssl, ret);
187 case SSL_ERROR_SYSCALL:
188 perror("SSL_connect");
191 ssl_socket_perror("SSL_connect");
200 fprintf(stderr, "%s: unexpected EOF\n", func);
205 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
207 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
213 static int host_matches(const char *host, const char *pattern)
215 if (pattern[0] == '*' && pattern[1] == '.') {
217 if (!(host = strchr(host, '.')))
222 return *host && *pattern && !strcasecmp(host, pattern);
225 static int verify_hostname(X509 *cert, const char *hostname)
231 STACK_OF(GENERAL_NAME) *subj_alt_names;
233 /* try the DNS subjectAltNames */
235 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
236 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
237 for (i = 0; !found && i < num_subj_alt_names; i++) {
238 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
239 if (subj_alt_name->type == GEN_DNS &&
240 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
241 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
244 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
249 /* try the common name */
250 if (!(subj = X509_get_subject_name(cert)))
251 return error("cannot get certificate subject");
252 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
253 return error("cannot get certificate common name");
254 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
256 return error("certificate owner '%s' does not match hostname '%s'",
260 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
262 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
263 const SSL_METHOD *meth;
272 SSL_load_error_strings();
275 meth = TLSv1_method();
277 meth = SSLv23_method();
280 ssl_socket_perror("SSLv23_method");
284 ctx = SSL_CTX_new(meth);
287 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
289 if (!SSL_CTX_set_default_verify_paths(ctx)) {
290 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
293 sock->ssl = SSL_new(ctx);
295 ssl_socket_perror("SSL_new");
298 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
299 ssl_socket_perror("SSL_set_rfd");
302 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
303 ssl_socket_perror("SSL_set_wfd");
307 ret = SSL_connect(sock->ssl);
309 socket_perror("SSL_connect", sock, ret);
314 /* make sure the hostname matches that of the certificate */
315 cert = SSL_get_peer_certificate(sock->ssl);
317 return error("unable to get peer certificate.");
318 if (verify_hostname(cert, server.host) < 0)
326 static int socket_read(struct imap_socket *sock, char *buf, int len)
331 n = SSL_read(sock->ssl, buf, len);
334 n = xread(sock->fd[0], buf, len);
336 socket_perror("read", sock, n);
339 sock->fd[0] = sock->fd[1] = -1;
344 static int socket_write(struct imap_socket *sock, const char *buf, int len)
349 n = SSL_write(sock->ssl, buf, len);
352 n = write_in_full(sock->fd[1], buf, len);
354 socket_perror("write", sock, n);
357 sock->fd[0] = sock->fd[1] = -1;
362 static void socket_shutdown(struct imap_socket *sock)
366 SSL_shutdown(sock->ssl);
374 /* simple line buffering */
375 static int buffer_gets(struct imap_buffer *b, char **s)
378 int start = b->offset;
383 /* make sure we have enough data to read the \r\n sequence */
384 if (b->offset + 1 >= b->bytes) {
386 /* shift down used bytes */
389 assert(start <= b->bytes);
390 n = b->bytes - start;
393 memmove(b->buf, b->buf + start, n);
399 n = socket_read(&b->sock, b->buf + b->bytes,
400 sizeof(b->buf) - b->bytes);
408 if (b->buf[b->offset] == '\r') {
409 assert(b->offset + 1 < b->bytes);
410 if (b->buf[b->offset + 1] == '\n') {
411 b->buf[b->offset] = 0; /* terminate the string */
412 b->offset += 2; /* next line */
424 static void imap_info(const char *msg, ...)
436 static void imap_warn(const char *msg, ...)
442 vfprintf(stderr, msg, va);
447 static char *next_arg(char **s)
453 while (isspace((unsigned char) **s))
462 *s = strchr(*s, '"');
465 while (**s && !isspace((unsigned char) **s))
477 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
483 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
484 die("Fatal: buffer too small. Please report a bug.");
489 static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
490 struct imap_cmd_cb *cb,
491 const char *fmt, va_list ap)
493 struct imap *imap = ctx->imap;
494 struct imap_cmd *cmd;
498 cmd = xmalloc(sizeof(struct imap_cmd));
499 nfvasprintf(&cmd->cmd, fmt, ap);
500 cmd->tag = ++imap->nexttag;
505 memset(&cmd->cb, 0, sizeof(cmd->cb));
507 while (imap->literal_pending)
508 get_cmd_result(ctx, NULL);
511 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
513 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
514 cmd->tag, cmd->cmd, cmd->cb.dlen,
515 CAP(LITERALPLUS) ? "+" : "");
518 if (imap->num_in_progress)
519 printf("(%d in progress) ", imap->num_in_progress);
520 if (memcmp(cmd->cmd, "LOGIN", 5))
521 printf(">>> %s", buf);
523 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
525 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
533 if (CAP(LITERALPLUS)) {
534 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
536 if (n != cmd->cb.dlen ||
537 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
544 imap->literal_pending = 1;
545 } else if (cmd->cb.cont)
546 imap->literal_pending = 1;
548 *imap->in_progress_append = cmd;
549 imap->in_progress_append = &cmd->next;
550 imap->num_in_progress++;
554 __attribute__((format (printf, 3, 4)))
555 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
556 struct imap_cmd_cb *cb,
557 const char *fmt, ...)
559 struct imap_cmd *ret;
563 ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
568 __attribute__((format (printf, 3, 4)))
569 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
570 const char *fmt, ...)
573 struct imap_cmd *cmdp;
576 cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
581 return get_cmd_result(ctx, cmdp);
584 __attribute__((format (printf, 3, 4)))
585 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
586 const char *fmt, ...)
589 struct imap_cmd *cmdp;
592 cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
595 return DRV_STORE_BAD;
597 switch (get_cmd_result(ctx, cmdp)) {
598 case RESP_BAD: return DRV_STORE_BAD;
599 case RESP_NO: return DRV_MSG_BAD;
600 default: return DRV_OK;
604 static int skip_imap_list_l(char **sp, int level)
609 while (isspace((unsigned char)*s))
611 if (level && *s == ')') {
618 if (skip_imap_list_l(&s, level + 1))
620 } else if (*s == '"') {
623 for (; *s != '"'; s++)
629 for (; *s && !isspace((unsigned char)*s); s++)
630 if (level && *s == ')')
646 static void skip_list(char **sp)
648 skip_imap_list_l(sp, 0);
651 static void parse_capability(struct imap *imap, char *cmd)
656 imap->caps = 0x80000000;
657 while ((arg = next_arg(&cmd)))
658 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
659 if (!strcmp(cap_list[i], arg))
660 imap->caps |= 1 << i;
661 imap->rcaps = imap->caps;
664 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
667 struct imap *imap = ctx->imap;
671 return RESP_OK; /* no response code */
673 if (!(p = strchr(s, ']'))) {
674 fprintf(stderr, "IMAP error: malformed response code\n");
679 if (!strcmp("UIDVALIDITY", arg)) {
680 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
681 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
684 } else if (!strcmp("UIDNEXT", arg)) {
685 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
686 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
689 } else if (!strcmp("CAPABILITY", arg)) {
690 parse_capability(imap, s);
691 } else if (!strcmp("ALERT", arg)) {
692 /* RFC2060 says that these messages MUST be displayed
695 for (; isspace((unsigned char)*p); p++);
696 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
697 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
698 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
699 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
700 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
707 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
709 struct imap *imap = ctx->imap;
710 struct imap_cmd *cmdp, **pcmdp, *ncmdp;
711 char *cmd, *arg, *arg1, *p;
712 int n, resp, resp2, tag;
715 if (buffer_gets(&imap->buf, &cmd))
718 arg = next_arg(&cmd);
720 arg = next_arg(&cmd);
722 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
726 if (!strcmp("NAMESPACE", arg)) {
727 /* rfc2342 NAMESPACE response. */
728 skip_list(&cmd); /* Personal mailboxes */
729 skip_list(&cmd); /* Others' mailboxes */
730 skip_list(&cmd); /* Shared mailboxes */
731 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
732 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
733 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
735 } else if (!strcmp("CAPABILITY", arg)) {
736 parse_capability(imap, cmd);
737 } else if ((arg1 = next_arg(&cmd))) {
739 * Unhandled response-data with at least two words.
742 * NEEDSWORK: Previously this case handled '<num> EXISTS'
743 * and '<num> RECENT' but as a probably-unintended side
744 * effect it ignores other unrecognized two-word
745 * responses. imap-send doesn't ever try to read
746 * messages or mailboxes these days, so consider
747 * eliminating this case.
750 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
753 } else if (!imap->in_progress) {
754 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
756 } else if (*arg == '+') {
757 /* This can happen only with the last command underway, as
758 it enforces a round-trip. */
759 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
760 offsetof(struct imap_cmd, next));
762 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
764 cmdp->cb.data = NULL;
765 if (n != (int)cmdp->cb.dlen)
767 } else if (cmdp->cb.cont) {
768 if (cmdp->cb.cont(ctx, cmdp, cmd))
771 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
774 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
777 imap->literal_pending = 0;
782 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
783 if (cmdp->tag == tag)
785 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
788 if (!(*pcmdp = cmdp->next))
789 imap->in_progress_append = pcmdp;
790 imap->num_in_progress--;
791 if (cmdp->cb.cont || cmdp->cb.data)
792 imap->literal_pending = 0;
793 arg = next_arg(&cmd);
794 if (!strcmp("OK", arg))
797 if (!strcmp("NO", arg)) {
798 if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
799 p = strchr(cmdp->cmd, '"');
800 if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) {
804 /* not waiting here violates the spec, but a server that does not
805 grok this nonetheless violates it too. */
807 if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
814 return 0; /* ignored */
820 } else /*if (!strcmp("BAD", arg))*/
822 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
823 memcmp(cmdp->cmd, "LOGIN", 5) ?
824 cmdp->cmd : "LOGIN <user> <pass>",
825 arg, cmd ? cmd : "");
827 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
831 cmdp->cb.done(ctx, cmdp, resp);
835 if (!tcmd || tcmd == cmdp)
842 static void imap_close_server(struct imap_store *ictx)
844 struct imap *imap = ictx->imap;
846 if (imap->buf.sock.fd[0] != -1) {
847 imap_exec(ictx, NULL, "LOGOUT");
848 socket_shutdown(&imap->buf.sock);
853 static void imap_close_store(struct imap_store *ctx)
855 imap_close_server(ctx);
862 * hexchar() and cram() functions are based on the code from the isync
863 * project (http://isync.sf.net/).
865 static char hexchar(unsigned int b)
867 return b < 10 ? '0' + b : 'a' + (b - 10);
870 #define ENCODED_SIZE(n) (4*((n+2)/3))
871 static char *cram(const char *challenge_64, const char *user, const char *pass)
873 int i, resp_len, encoded_len, decoded_len;
875 unsigned char hash[16];
877 char *response, *response_64, *challenge;
880 * length of challenge_64 (i.e. base-64 encoded string) is a good
881 * enough upper bound for challenge (decoded result).
883 encoded_len = strlen(challenge_64);
884 challenge = xmalloc(encoded_len);
885 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
886 (unsigned char *)challenge_64, encoded_len);
888 die("invalid challenge %s", challenge_64);
889 HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5());
890 HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len);
891 HMAC_Final(&hmac, hash, NULL);
892 HMAC_CTX_cleanup(&hmac);
895 for (i = 0; i < 16; i++) {
896 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
897 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
900 /* response: "<user> <digest in hex>" */
901 resp_len = strlen(user) + 1 + strlen(hex) + 1;
902 response = xmalloc(resp_len);
903 sprintf(response, "%s %s", user, hex);
905 response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
906 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
907 (unsigned char *)response, resp_len);
909 die("EVP_EncodeBlock error");
910 response_64[encoded_len] = '\0';
911 return (char *)response_64;
916 static char *cram(const char *challenge_64, const char *user, const char *pass)
918 die("If you want to use CRAM-MD5 authenticate method, "
919 "you have to build git-imap-send with OpenSSL library.");
924 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
929 response = cram(prompt, server.user, server.pass);
931 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
932 if (ret != strlen(response))
933 return error("IMAP error: sending response failed");
940 static struct imap_store *imap_open_store(struct imap_server_conf *srvc)
942 struct imap_store *ctx;
947 ctx = xcalloc(sizeof(*ctx), 1);
949 ctx->imap = imap = xcalloc(sizeof(*imap), 1);
950 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
951 imap->in_progress_append = &imap->in_progress;
953 /* open connection to IMAP server */
956 const char *argv[] = { srvc->tunnel, NULL };
957 struct child_process tunnel = {NULL};
959 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
962 tunnel.use_shell = 1;
965 if (start_command(&tunnel))
966 die("cannot start proxy %s", argv[0]);
968 imap->buf.sock.fd[0] = tunnel.out;
969 imap->buf.sock.fd[1] = tunnel.in;
974 struct addrinfo hints, *ai0, *ai;
978 snprintf(portstr, sizeof(portstr), "%d", srvc->port);
980 memset(&hints, 0, sizeof(hints));
981 hints.ai_socktype = SOCK_STREAM;
982 hints.ai_protocol = IPPROTO_TCP;
984 imap_info("Resolving %s... ", srvc->host);
985 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
987 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
992 for (ai0 = ai; ai; ai = ai->ai_next) {
993 char addr[NI_MAXHOST];
995 s = socket(ai->ai_family, ai->ai_socktype,
1000 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1001 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1002 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1004 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1016 struct sockaddr_in addr;
1018 memset(&addr, 0, sizeof(addr));
1019 addr.sin_port = htons(srvc->port);
1020 addr.sin_family = AF_INET;
1022 imap_info("Resolving %s... ", srvc->host);
1023 he = gethostbyname(srvc->host);
1025 perror("gethostbyname");
1030 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1032 s = socket(PF_INET, SOCK_STREAM, 0);
1034 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1035 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1042 fputs("Error: unable to connect to server.\n", stderr);
1046 imap->buf.sock.fd[0] = s;
1047 imap->buf.sock.fd[1] = dup(s);
1049 if (srvc->use_ssl &&
1050 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1057 /* read the greeting string */
1058 if (buffer_gets(&imap->buf, &rsp)) {
1059 fprintf(stderr, "IMAP error: no greeting response\n");
1062 arg = next_arg(&rsp);
1063 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1064 fprintf(stderr, "IMAP error: invalid greeting response\n");
1068 if (!strcmp("PREAUTH", arg))
1070 else if (strcmp("OK", arg) != 0) {
1071 fprintf(stderr, "IMAP error: unknown greeting response\n");
1074 parse_response_code(ctx, NULL, rsp);
1075 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1080 if (!srvc->use_ssl && CAP(STARTTLS)) {
1081 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1083 if (ssl_socket_connect(&imap->buf.sock, 1,
1086 /* capabilities may have changed, so get the new capabilities */
1087 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1091 imap_info("Logging in...\n");
1093 fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
1097 struct strbuf prompt = STRBUF_INIT;
1098 strbuf_addf(&prompt, "Password (%s@%s): ", srvc->user, srvc->host);
1099 arg = git_getpass(prompt.buf);
1100 strbuf_release(&prompt);
1102 fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
1106 * getpass() returns a pointer to a static buffer. make a copy
1107 * for long term storage.
1109 srvc->pass = xstrdup(arg);
1112 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1116 if (srvc->auth_method) {
1117 struct imap_cmd_cb cb;
1119 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1120 if (!CAP(AUTH_CRAM_MD5)) {
1121 fprintf(stderr, "You specified"
1122 "CRAM-MD5 as authentication method, "
1123 "but %s doesn't support it.\n", srvc->host);
1128 memset(&cb, 0, sizeof(cb));
1129 cb.cont = auth_cram_md5;
1130 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1131 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1135 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1139 if (!imap->buf.sock.ssl)
1140 imap_warn("*** IMAP Warning *** Password is being "
1141 "sent in the clear\n");
1142 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1143 fprintf(stderr, "IMAP error: LOGIN failed\n");
1153 imap_close_store(ctx);
1158 * Insert CR characters as necessary in *msg to ensure that every LF
1159 * character in *msg is preceded by a CR.
1161 static void lf_to_crlf(struct strbuf *msg)
1167 /* First pass: tally, in j, the size of the new 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];
1175 new = xmalloc(j + 1);
1178 * Second pass: write the new string. Note that this loop is
1179 * otherwise identical to the first pass.
1181 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1182 if (msg->buf[i] == '\n' && lastc != '\r')
1184 lastc = new[j++] = msg->buf[i];
1186 strbuf_attach(msg, new, j, j + 1);
1190 * Store msg to IMAP. Also detach and free the data from msg->data,
1191 * leaving msg->data empty.
1193 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1195 struct imap *imap = ctx->imap;
1196 struct imap_cmd_cb cb;
1197 const char *prefix, *box;
1201 memset(&cb, 0, sizeof(cb));
1204 cb.data = strbuf_detach(msg, NULL);
1207 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1209 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1210 imap->caps = imap->rcaps;
1217 static void wrap_in_html(struct strbuf *msg)
1219 struct strbuf buf = STRBUF_INIT;
1220 static char *content_type = "Content-Type: text/html;\n";
1221 static char *pre_open = "<pre>\n";
1222 static char *pre_close = "</pre>\n";
1223 const char *body = strstr(msg->buf, "\n\n");
1226 return; /* Headers but no body; no wrapping needed */
1230 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1231 strbuf_addstr(&buf, content_type);
1232 strbuf_addch(&buf, '\n');
1233 strbuf_addstr(&buf, pre_open);
1234 strbuf_addstr_xml_quoted(&buf, body);
1235 strbuf_addstr(&buf, pre_close);
1237 strbuf_release(msg);
1241 #define CHUNKSIZE 0x1000
1243 static int read_message(FILE *f, struct strbuf *all_msgs)
1246 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1250 return ferror(f) ? -1 : 0;
1253 static int count_messages(struct strbuf *all_msgs)
1256 char *p = all_msgs->buf;
1259 if (!prefixcmp(p, "From ")) {
1260 p = strstr(p+5, "\nFrom: ");
1262 p = strstr(p+7, "\nDate: ");
1264 p = strstr(p+7, "\nSubject: ");
1269 p = strstr(p+5, "\nFrom ");
1278 * Copy the next message from all_msgs, starting at offset *ofs, to
1279 * msg. Update *ofs to the start of the following message. Return
1280 * true iff a message was successfully copied.
1282 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1287 if (*ofs >= all_msgs->len)
1290 data = &all_msgs->buf[*ofs];
1291 len = all_msgs->len - *ofs;
1293 if (len < 5 || prefixcmp(data, "From "))
1296 p = strchr(data, '\n');
1304 p = strstr(data, "\nFrom ");
1308 strbuf_add(msg, data, len);
1313 static char *imap_folder;
1315 static int git_imap_config(const char *key, const char *val, void *cb)
1317 char imap_key[] = "imap.";
1319 if (strncmp(key, imap_key, sizeof imap_key - 1))
1322 key += sizeof imap_key - 1;
1324 /* check booleans first, and barf on others */
1325 if (!strcmp("sslverify", key))
1326 server.ssl_verify = git_config_bool(key, val);
1327 else if (!strcmp("preformattedhtml", key))
1328 server.use_html = git_config_bool(key, val);
1330 return config_error_nonbool(key);
1332 if (!strcmp("folder", key)) {
1333 imap_folder = xstrdup(val);
1334 } else if (!strcmp("host", key)) {
1335 if (!prefixcmp(val, "imap:"))
1337 else if (!prefixcmp(val, "imaps:")) {
1341 if (!prefixcmp(val, "//"))
1343 server.host = xstrdup(val);
1344 } else if (!strcmp("user", key))
1345 server.user = xstrdup(val);
1346 else if (!strcmp("pass", key))
1347 server.pass = xstrdup(val);
1348 else if (!strcmp("port", key))
1349 server.port = git_config_int(key, val);
1350 else if (!strcmp("tunnel", key))
1351 server.tunnel = xstrdup(val);
1352 else if (!strcmp("authmethod", key))
1353 server.auth_method = xstrdup(val);
1358 int main(int argc, char **argv)
1360 struct strbuf all_msgs = STRBUF_INIT;
1361 struct strbuf msg = STRBUF_INIT;
1362 struct imap_store *ctx = NULL;
1368 git_extract_argv0_path(argv[0]);
1370 git_setup_gettext();
1373 usage(imap_send_usage);
1375 setup_git_directory_gently(&nongit_ok);
1376 git_config(git_imap_config, NULL);
1379 server.port = server.use_ssl ? 993 : 143;
1382 fprintf(stderr, "no imap store specified\n");
1386 if (!server.tunnel) {
1387 fprintf(stderr, "no imap host specified\n");
1390 server.host = "tunnel";
1393 /* read the messages */
1394 if (read_message(stdin, &all_msgs)) {
1395 fprintf(stderr, "error reading input\n");
1399 if (all_msgs.len == 0) {
1400 fprintf(stderr, "nothing to send\n");
1404 total = count_messages(&all_msgs);
1406 fprintf(stderr, "no messages to send\n");
1410 /* write it to the imap server */
1411 ctx = imap_open_store(&server);
1413 fprintf(stderr, "failed to open store\n");
1417 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1418 ctx->name = imap_folder;
1420 unsigned percent = n * 100 / total;
1422 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1423 if (!split_msg(&all_msgs, &msg, &ofs))
1425 if (server.use_html)
1427 r = imap_store_msg(ctx, &msg);
1432 fprintf(stderr, "\n");
1434 imap_close_store(ctx);