imap-send.c

   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, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include "cache.h"
  26 #include "exec_cmd.h"
  27 #include "run-command.h"
  28 #ifdef NO_OPENSSL
  29 typedef void *SSL;
  30 #endif
  31
  32 struct store_conf {
  33         char *name;
  34         const char *path; /* should this be here? its interpretation is driver-specific */
  35         char *map_inbox;
  36         char *trash;
  37         unsigned max_size; /* off_t is overkill */
  38         unsigned trash_remote_new:1, trash_only_new:1;
  39 };
  40
  41 struct string_list {
  42         struct string_list *next;
  43         char string[1];
  44 };
  45
  46 struct channel_conf {
  47         struct channel_conf *next;
  48         char *name;
  49         struct store_conf *master, *slave;
  50         char *master_name, *slave_name;
  51         char *sync_state;
  52         struct string_list *patterns;
  53         int mops, sops;
  54         unsigned max_messages; /* for slave only */
  55 };
  56
  57 struct group_conf {
  58         struct group_conf *next;
  59         char *name;
  60         struct string_list *channels;
  61 };
  62
  63 /* For message->status */
  64 #define M_RECENT       (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
  65 #define M_DEAD         (1<<1) /* expunged */
  66 #define M_FLAGS        (1<<2) /* flags fetched */
  67
  68 struct message {
  69         struct message *next;
  70         /* struct string_list *keywords; */
  71         size_t size; /* zero implies "not fetched" */
  72         int uid;
  73         unsigned char flags, status;
  74 };
  75
  76 struct store {
  77         struct store_conf *conf; /* foreign */
  78
  79         /* currently open mailbox */
  80         const char *name; /* foreign! maybe preset? */
  81         char *path; /* own */
  82         struct message *msgs; /* own */
  83         int uidvalidity;
  84         unsigned char opts; /* maybe preset? */
  85         /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
  86         int count; /* # of messages */
  87         int recent; /* # of recent messages - don't trust this beyond the initial read */
  88 };
  89
  90 struct msg_data {
  91         char *data;
  92         int len;
  93         unsigned char flags;
  94         unsigned int crlf:1;
  95 };
  96
  97 static const char imap_send_usage[] = "git imap-send < <mbox>";
  98
  99 #undef DRV_OK
 100 #define DRV_OK          0
 101 #define DRV_MSG_BAD     -1
 102 #define DRV_BOX_BAD     -2
 103 #define DRV_STORE_BAD   -3
 104
 105 static int Verbose, Quiet;
 106
 107 __attribute__((format (printf, 1, 2)))
 108 static void imap_info(const char *, ...);
 109 __attribute__((format (printf, 1, 2)))
 110 static void imap_warn(const char *, ...);
 111
 112 static char *next_arg(char **);
 113
 114 static void free_generic_messages(struct message *);
 115
 116 __attribute__((format (printf, 3, 4)))
 117 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
 118
 119 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
 120 {
 121         int len;
 122         char tmp[8192];
 123
 124         len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
 125         if (len < 0)
 126                 die("Fatal: Out of memory");
 127         if (len >= sizeof(tmp))
 128                 die("imap command overflow!");
 129         *strp = xmemdupz(tmp, len);
 130         return len;
 131 }
 132
 133 struct imap_server_conf {
 134         char *name;
 135         char *tunnel;
 136         char *host;
 137         int port;
 138         char *user;
 139         char *pass;
 140         int use_ssl;
 141         int ssl_verify;
 142         int use_html;
 143 };
 144
 145 struct imap_store_conf {
 146         struct store_conf gen;
 147         struct imap_server_conf *server;
 148         unsigned use_namespace:1;
 149 };
 150
 151 #define NIL     (void *)0x1
 152 #define LIST    (void *)0x2
 153
 154 struct imap_list {
 155         struct imap_list *next, *child;
 156         char *val;
 157         int len;
 158 };
 159
 160 struct imap_socket {
 161         int fd[2];
 162         SSL *ssl;
 163 };
 164
 165 struct imap_buffer {
 166         struct imap_socket sock;
 167         int bytes;
 168         int offset;
 169         char buf[1024];
 170 };
 171
 172 struct imap_cmd;
 173
 174 struct imap {
 175         int uidnext; /* from SELECT responses */
 176         struct imap_list *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
 177         unsigned caps, rcaps; /* CAPABILITY results */
 178         /* command queue */
 179         int nexttag, num_in_progress, literal_pending;
 180         struct imap_cmd *in_progress, **in_progress_append;
 181         struct imap_buffer buf; /* this is BIG, so put it last */
 182 };
 183
 184 struct imap_store {
 185         struct store gen;
 186         int uidvalidity;
 187         struct imap *imap;
 188         const char *prefix;
 189         unsigned /*currentnc:1,*/ trashnc:1;
 190 };
 191
 192 struct imap_cmd_cb {
 193         int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
 194         void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
 195         void *ctx;
 196         char *data;
 197         int dlen;
 198         int uid;
 199         unsigned create:1, trycreate:1;
 200 };
 201
 202 struct imap_cmd {
 203         struct imap_cmd *next;
 204         struct imap_cmd_cb cb;
 205         char *cmd;
 206         int tag;
 207 };
 208
 209 #define CAP(cap) (imap->caps & (1 << (cap)))
 210
 211 enum CAPABILITY {
 212         NOLOGIN = 0,
 213         UIDPLUS,
 214         LITERALPLUS,
 215         NAMESPACE,
 216         STARTTLS,
 217 };
 218
 219 static const char *cap_list[] = {
 220         "LOGINDISABLED",
 221         "UIDPLUS",
 222         "LITERAL+",
 223         "NAMESPACE",
 224         "STARTTLS",
 225 };
 226
 227 #define RESP_OK    0
 228 #define RESP_NO    1
 229 #define RESP_BAD   2
 230
 231 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
 232
 233
 234 static const char *Flags[] = {
 235         "Draft",
 236         "Flagged",
 237         "Answered",
 238         "Seen",
 239         "Deleted",
 240 };
 241
 242 #ifndef NO_OPENSSL
 243 static void ssl_socket_perror(const char *func)
 244 {
 245         fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
 246 }
 247 #endif
 248
 249 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
 250 {
 251 #ifndef NO_OPENSSL
 252         if (sock->ssl) {
 253                 int sslerr = SSL_get_error(sock->ssl, ret);
 254                 switch (sslerr) {
 255                 case SSL_ERROR_NONE:
 256                         break;
 257                 case SSL_ERROR_SYSCALL:
 258                         perror("SSL_connect");
 259                         break;
 260                 default:
 261                         ssl_socket_perror("SSL_connect");
 262                         break;
 263                 }
 264         } else
 265 #endif
 266         {
 267                 if (ret < 0)
 268                         perror(func);
 269                 else
 270                         fprintf(stderr, "%s: unexpected EOF\n", func);
 271         }
 272 }
 273
 274 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
 275 {
 276 #ifdef NO_OPENSSL
 277         fprintf(stderr, "SSL requested but SSL support not compiled in\n");
 278         return -1;
 279 #else
 280 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
 281         const SSL_METHOD *meth;
 282 #else
 283         SSL_METHOD *meth;
 284 #endif
 285         SSL_CTX *ctx;
 286         int ret;
 287
 288         SSL_library_init();
 289         SSL_load_error_strings();
 290
 291         if (use_tls_only)
 292                 meth = TLSv1_method();
 293         else
 294                 meth = SSLv23_method();
 295
 296         if (!meth) {
 297                 ssl_socket_perror("SSLv23_method");
 298                 return -1;
 299         }
 300
 301         ctx = SSL_CTX_new(meth);
 302
 303         if (verify)
 304                 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
 305
 306         if (!SSL_CTX_set_default_verify_paths(ctx)) {
 307                 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
 308                 return -1;
 309         }
 310         sock->ssl = SSL_new(ctx);
 311         if (!sock->ssl) {
 312                 ssl_socket_perror("SSL_new");
 313                 return -1;
 314         }
 315         if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
 316                 ssl_socket_perror("SSL_set_rfd");
 317                 return -1;
 318         }
 319         if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
 320                 ssl_socket_perror("SSL_set_wfd");
 321                 return -1;
 322         }
 323
 324         ret = SSL_connect(sock->ssl);
 325         if (ret <= 0) {
 326                 socket_perror("SSL_connect", sock, ret);
 327                 return -1;
 328         }
 329
 330         return 0;
 331 #endif
 332 }
 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 (Verbose)
 422                                         puts(*s);
 423                                 return 0;
 424                         }
 425                 }
 426
 427                 b->offset++;
 428         }
 429         /* not reached */
 430 }
 431
 432 static void imap_info(const char *msg, ...)
 433 {
 434         va_list va;
 435
 436         if (!Quiet) {
 437                 va_start(va, msg);
 438                 vprintf(msg, va);
 439                 va_end(va);
 440                 fflush(stdout);
 441         }
 442 }
 443
 444 static void imap_warn(const char *msg, ...)
 445 {
 446         va_list va;
 447
 448         if (Quiet < 2) {
 449                 va_start(va, msg);
 450                 vfprintf(stderr, msg, va);
 451                 va_end(va);
 452         }
 453 }
 454
 455 static char *next_arg(char **s)
 456 {
 457         char *ret;
 458
 459         if (!s || !*s)
 460                 return NULL;
 461         while (isspace((unsigned char) **s))
 462                 (*s)++;
 463         if (!**s) {
 464                 *s = NULL;
 465                 return NULL;
 466         }
 467         if (**s == '"') {
 468                 ++*s;
 469                 ret = *s;
 470                 *s = strchr(*s, '"');
 471         } else {
 472                 ret = *s;
 473                 while (**s && !isspace((unsigned char) **s))
 474                         (*s)++;
 475         }
 476         if (*s) {
 477                 if (**s)
 478                         *(*s)++ = 0;
 479                 if (!**s)
 480                         *s = NULL;
 481         }
 482         return ret;
 483 }
 484
 485 static void free_generic_messages(struct message *msgs)
 486 {
 487         struct message *tmsg;
 488
 489         for (; msgs; msgs = tmsg) {
 490                 tmsg = msgs->next;
 491                 free(msgs);
 492         }
 493 }
 494
 495 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
 496 {
 497         int ret;
 498         va_list va;
 499
 500         va_start(va, fmt);
 501         if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
 502                 die("Fatal: buffer too small. Please report a bug.");
 503         va_end(va);
 504         return ret;
 505 }
 506
 507 static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
 508                                          struct imap_cmd_cb *cb,
 509                                          const char *fmt, va_list ap)
 510 {
 511         struct imap *imap = ctx->imap;
 512         struct imap_cmd *cmd;
 513         int n, bufl;
 514         char buf[1024];
 515
 516         cmd = xmalloc(sizeof(struct imap_cmd));
 517         nfvasprintf(&cmd->cmd, fmt, ap);
 518         cmd->tag = ++imap->nexttag;
 519
 520         if (cb)
 521                 cmd->cb = *cb;
 522         else
 523                 memset(&cmd->cb, 0, sizeof(cmd->cb));
 524
 525         while (imap->literal_pending)
 526                 get_cmd_result(ctx, NULL);
 527
 528         bufl = nfsnprintf(buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
 529                            "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
 530                            cmd->tag, cmd->cmd, cmd->cb.dlen);
 531         if (Verbose) {
 532                 if (imap->num_in_progress)
 533                         printf("(%d in progress) ", imap->num_in_progress);
 534                 if (memcmp(cmd->cmd, "LOGIN", 5))
 535                         printf(">>> %s", buf);
 536                 else
 537                         printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
 538         }
 539         if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
 540                 free(cmd->cmd);
 541                 free(cmd);
 542                 if (cb)
 543                         free(cb->data);
 544                 return NULL;
 545         }
 546         if (cmd->cb.data) {
 547                 if (CAP(LITERALPLUS)) {
 548                         n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
 549                         free(cmd->cb.data);
 550                         if (n != cmd->cb.dlen ||
 551                             socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
 552                                 free(cmd->cmd);
 553                                 free(cmd);
 554                                 return NULL;
 555                         }
 556                         cmd->cb.data = NULL;
 557                 } else
 558                         imap->literal_pending = 1;
 559         } else if (cmd->cb.cont)
 560                 imap->literal_pending = 1;
 561         cmd->next = NULL;
 562         *imap->in_progress_append = cmd;
 563         imap->in_progress_append = &cmd->next;
 564         imap->num_in_progress++;
 565         return cmd;
 566 }
 567
 568 __attribute__((format (printf, 3, 4)))
 569 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
 570                                        struct imap_cmd_cb *cb,
 571                                        const char *fmt, ...)
 572 {
 573         struct imap_cmd *ret;
 574         va_list ap;
 575
 576         va_start(ap, fmt);
 577         ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
 578         va_end(ap);
 579         return ret;
 580 }
 581
 582 __attribute__((format (printf, 3, 4)))
 583 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
 584                      const char *fmt, ...)
 585 {
 586         va_list ap;
 587         struct imap_cmd *cmdp;
 588
 589         va_start(ap, fmt);
 590         cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 591         va_end(ap);
 592         if (!cmdp)
 593                 return RESP_BAD;
 594
 595         return get_cmd_result(ctx, cmdp);
 596 }
 597
 598 __attribute__((format (printf, 3, 4)))
 599 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
 600                        const char *fmt, ...)
 601 {
 602         va_list ap;
 603         struct imap_cmd *cmdp;
 604
 605         va_start(ap, fmt);
 606         cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 607         va_end(ap);
 608         if (!cmdp)
 609                 return DRV_STORE_BAD;
 610
 611         switch (get_cmd_result(ctx, cmdp)) {
 612         case RESP_BAD: return DRV_STORE_BAD;
 613         case RESP_NO: return DRV_MSG_BAD;
 614         default: return DRV_OK;
 615         }
 616 }
 617
 618 static int is_atom(struct imap_list *list)
 619 {
 620         return list && list->val && list->val != NIL && list->val != LIST;
 621 }
 622
 623 static int is_list(struct imap_list *list)
 624 {
 625         return list && list->val == LIST;
 626 }
 627
 628 static void free_list(struct imap_list *list)
 629 {
 630         struct imap_list *tmp;
 631
 632         for (; list; list = tmp) {
 633                 tmp = list->next;
 634                 if (is_list(list))
 635                         free_list(list->child);
 636                 else if (is_atom(list))
 637                         free(list->val);
 638                 free(list);
 639         }
 640 }
 641
 642 static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
 643 {
 644         struct imap_list *cur;
 645         char *s = *sp, *p;
 646         int n, bytes;
 647
 648         for (;;) {
 649                 while (isspace((unsigned char)*s))
 650                         s++;
 651                 if (level && *s == ')') {
 652                         s++;
 653                         break;
 654                 }
 655                 *curp = cur = xmalloc(sizeof(*cur));
 656                 curp = &cur->next;
 657                 cur->val = NULL; /* for clean bail */
 658                 if (*s == '(') {
 659                         /* sublist */
 660                         s++;
 661                         cur->val = LIST;
 662                         if (parse_imap_list_l(imap, &s, &cur->child, level + 1))
 663                                 goto bail;
 664                 } else if (imap && *s == '{') {
 665                         /* literal */
 666                         bytes = cur->len = strtol(s + 1, &s, 10);
 667                         if (*s != '}')
 668                                 goto bail;
 669
 670                         s = cur->val = xmalloc(cur->len);
 671
 672                         /* dump whats left over in the input buffer */
 673                         n = imap->buf.bytes - imap->buf.offset;
 674
 675                         if (n > bytes)
 676                                 /* the entire message fit in the buffer */
 677                                 n = bytes;
 678
 679                         memcpy(s, imap->buf.buf + imap->buf.offset, n);
 680                         s += n;
 681                         bytes -= n;
 682
 683                         /* mark that we used part of the buffer */
 684                         imap->buf.offset += n;
 685
 686                         /* now read the rest of the message */
 687                         while (bytes > 0) {
 688                                 if ((n = socket_read(&imap->buf.sock, s, bytes)) <= 0)
 689                                         goto bail;
 690                                 s += n;
 691                                 bytes -= n;
 692                         }
 693
 694                         if (buffer_gets(&imap->buf, &s))
 695                                 goto bail;
 696                 } else if (*s == '"') {
 697                         /* quoted string */
 698                         s++;
 699                         p = s;
 700                         for (; *s != '"'; s++)
 701                                 if (!*s)
 702                                         goto bail;
 703                         cur->len = s - p;
 704                         s++;
 705                         cur->val = xmemdupz(p, cur->len);
 706                 } else {
 707                         /* atom */
 708                         p = s;
 709                         for (; *s && !isspace((unsigned char)*s); s++)
 710                                 if (level && *s == ')')
 711                                         break;
 712                         cur->len = s - p;
 713                         if (cur->len == 3 && !memcmp("NIL", p, 3))
 714                                 cur->val = NIL;
 715                         else
 716                                 cur->val = xmemdupz(p, cur->len);
 717                 }
 718
 719                 if (!level)
 720                         break;
 721                 if (!*s)
 722                         goto bail;
 723         }
 724         *sp = s;
 725         *curp = NULL;
 726         return 0;
 727
 728 bail:
 729         *curp = NULL;
 730         return -1;
 731 }
 732
 733 static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
 734 {
 735         struct imap_list *head;
 736
 737         if (!parse_imap_list_l(imap, sp, &head, 0))
 738                 return head;
 739         free_list(head);
 740         return NULL;
 741 }
 742
 743 static struct imap_list *parse_list(char **sp)
 744 {
 745         return parse_imap_list(NULL, sp);
 746 }
 747
 748 static void parse_capability(struct imap *imap, char *cmd)
 749 {
 750         char *arg;
 751         unsigned i;
 752
 753         imap->caps = 0x80000000;
 754         while ((arg = next_arg(&cmd)))
 755                 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
 756                         if (!strcmp(cap_list[i], arg))
 757                                 imap->caps |= 1 << i;
 758         imap->rcaps = imap->caps;
 759 }
 760
 761 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
 762                                char *s)
 763 {
 764         struct imap *imap = ctx->imap;
 765         char *arg, *p;
 766
 767         if (*s != '[')
 768                 return RESP_OK;         /* no response code */
 769         s++;
 770         if (!(p = strchr(s, ']'))) {
 771                 fprintf(stderr, "IMAP error: malformed response code\n");
 772                 return RESP_BAD;
 773         }
 774         *p++ = 0;
 775         arg = next_arg(&s);
 776         if (!strcmp("UIDVALIDITY", arg)) {
 777                 if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg))) {
 778                         fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
 779                         return RESP_BAD;
 780                 }
 781         } else if (!strcmp("UIDNEXT", arg)) {
 782                 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
 783                         fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
 784                         return RESP_BAD;
 785                 }
 786         } else if (!strcmp("CAPABILITY", arg)) {
 787                 parse_capability(imap, s);
 788         } else if (!strcmp("ALERT", arg)) {
 789                 /* RFC2060 says that these messages MUST be displayed
 790                  * to the user
 791                  */
 792                 for (; isspace((unsigned char)*p); p++);
 793                 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
 794         } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
 795                 if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg)) ||
 796                     !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
 797                         fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
 798                         return RESP_BAD;
 799                 }
 800         }
 801         return RESP_OK;
 802 }
 803
 804 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
 805 {
 806         struct imap *imap = ctx->imap;
 807         struct imap_cmd *cmdp, **pcmdp, *ncmdp;
 808         char *cmd, *arg, *arg1, *p;
 809         int n, resp, resp2, tag;
 810
 811         for (;;) {
 812                 if (buffer_gets(&imap->buf, &cmd))
 813                         return RESP_BAD;
 814
 815                 arg = next_arg(&cmd);
 816                 if (*arg == '*') {
 817                         arg = next_arg(&cmd);
 818                         if (!arg) {
 819                                 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 820                                 return RESP_BAD;
 821                         }
 822
 823                         if (!strcmp("NAMESPACE", arg)) {
 824                                 imap->ns_personal = parse_list(&cmd);
 825                                 imap->ns_other = parse_list(&cmd);
 826                                 imap->ns_shared = parse_list(&cmd);
 827                         } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
 828                                    !strcmp("NO", arg) || !strcmp("BYE", arg)) {
 829                                 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
 830                                         return resp;
 831                         } else if (!strcmp("CAPABILITY", arg))
 832                                 parse_capability(imap, cmd);
 833                         else if ((arg1 = next_arg(&cmd))) {
 834                                 if (!strcmp("EXISTS", arg1))
 835                                         ctx->gen.count = atoi(arg);
 836                                 else if (!strcmp("RECENT", arg1))
 837                                         ctx->gen.recent = atoi(arg);
 838                         } else {
 839                                 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 840                                 return RESP_BAD;
 841                         }
 842                 } else if (!imap->in_progress) {
 843                         fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
 844                         return RESP_BAD;
 845                 } else if (*arg == '+') {
 846                         /* This can happen only with the last command underway, as
 847                            it enforces a round-trip. */
 848                         cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
 849                                offsetof(struct imap_cmd, next));
 850                         if (cmdp->cb.data) {
 851                                 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
 852                                 free(cmdp->cb.data);
 853                                 cmdp->cb.data = NULL;
 854                                 if (n != (int)cmdp->cb.dlen)
 855                                         return RESP_BAD;
 856                         } else if (cmdp->cb.cont) {
 857                                 if (cmdp->cb.cont(ctx, cmdp, cmd))
 858                                         return RESP_BAD;
 859                         } else {
 860                                 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
 861                                 return RESP_BAD;
 862                         }
 863                         if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
 864                                 return RESP_BAD;
 865                         if (!cmdp->cb.cont)
 866                                 imap->literal_pending = 0;
 867                         if (!tcmd)
 868                                 return DRV_OK;
 869                 } else {
 870                         tag = atoi(arg);
 871                         for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
 872                                 if (cmdp->tag == tag)
 873                                         goto gottag;
 874                         fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
 875                         return RESP_BAD;
 876                 gottag:
 877                         if (!(*pcmdp = cmdp->next))
 878                                 imap->in_progress_append = pcmdp;
 879                         imap->num_in_progress--;
 880                         if (cmdp->cb.cont || cmdp->cb.data)
 881                                 imap->literal_pending = 0;
 882                         arg = next_arg(&cmd);
 883                         if (!strcmp("OK", arg))
 884                                 resp = DRV_OK;
 885                         else {
 886                                 if (!strcmp("NO", arg)) {
 887                                         if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
 888                                                 p = strchr(cmdp->cmd, '"');
 889                                                 if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) {
 890                                                         resp = RESP_BAD;
 891                                                         goto normal;
 892                                                 }
 893                                                 /* not waiting here violates the spec, but a server that does not
 894                                                    grok this nonetheless violates it too. */
 895                                                 cmdp->cb.create = 0;
 896                                                 if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
 897                                                         resp = RESP_BAD;
 898                                                         goto normal;
 899                                                 }
 900                                                 free(cmdp->cmd);
 901                                                 free(cmdp);
 902                                                 if (!tcmd)
 903                                                         return 0;       /* ignored */
 904                                                 if (cmdp == tcmd)
 905                                                         tcmd = ncmdp;
 906                                                 continue;
 907                                         }
 908                                         resp = RESP_NO;
 909                                 } else /*if (!strcmp("BAD", arg))*/
 910                                         resp = RESP_BAD;
 911                                 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
 912                                          memcmp(cmdp->cmd, "LOGIN", 5) ?
 913                                                         cmdp->cmd : "LOGIN <user> <pass>",
 914                                                         arg, cmd ? cmd : "");
 915                         }
 916                         if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
 917                                 resp = resp2;
 918                 normal:
 919                         if (cmdp->cb.done)
 920                                 cmdp->cb.done(ctx, cmdp, resp);
 921                         free(cmdp->cb.data);
 922                         free(cmdp->cmd);
 923                         free(cmdp);
 924                         if (!tcmd || tcmd == cmdp)
 925                                 return resp;
 926                 }
 927         }
 928         /* not reached */
 929 }
 930
 931 static void imap_close_server(struct imap_store *ictx)
 932 {
 933         struct imap *imap = ictx->imap;
 934
 935         if (imap->buf.sock.fd[0] != -1) {
 936                 imap_exec(ictx, NULL, "LOGOUT");
 937                 socket_shutdown(&imap->buf.sock);
 938         }
 939         free_list(imap->ns_personal);
 940         free_list(imap->ns_other);
 941         free_list(imap->ns_shared);
 942         free(imap);
 943 }
 944
 945 static void imap_close_store(struct store *ctx)
 946 {
 947         imap_close_server((struct imap_store *)ctx);
 948         free_generic_messages(ctx->msgs);
 949         free(ctx);
 950 }
 951
 952 static struct store *imap_open_store(struct imap_server_conf *srvc)
 953 {
 954         struct imap_store *ctx;
 955         struct imap *imap;
 956         char *arg, *rsp;
 957         int s = -1, preauth;
 958
 959         ctx = xcalloc(sizeof(*ctx), 1);
 960
 961         ctx->imap = imap = xcalloc(sizeof(*imap), 1);
 962         imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
 963         imap->in_progress_append = &imap->in_progress;
 964
 965         /* open connection to IMAP server */
 966
 967         if (srvc->tunnel) {
 968                 const char *argv[4];
 969                 struct child_process tunnel = {0};
 970
 971                 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
 972
 973                 argv[0] = "sh";
 974                 argv[1] = "-c";
 975                 argv[2] = srvc->tunnel;
 976                 argv[3] = NULL;
 977
 978                 tunnel.argv = argv;
 979                 tunnel.in = -1;
 980                 tunnel.out = -1;
 981                 if (start_command(&tunnel))
 982                         die("cannot start proxy %s", argv[0]);
 983
 984                 imap->buf.sock.fd[0] = tunnel.out;
 985                 imap->buf.sock.fd[1] = tunnel.in;
 986
 987                 imap_info("ok\n");
 988         } else {
 989 #ifndef NO_IPV6
 990                 struct addrinfo hints, *ai0, *ai;
 991                 int gai;
 992                 char portstr[6];
 993
 994                 snprintf(portstr, sizeof(portstr), "%hu", srvc->port);
 995
 996                 memset(&hints, 0, sizeof(hints));
 997                 hints.ai_socktype = SOCK_STREAM;
 998                 hints.ai_protocol = IPPROTO_TCP;
 999
1000                 imap_info("Resolving %s... ", srvc->host);
1001                 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
1002                 if (gai) {
1003                         fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
1004                         goto bail;
1005                 }
1006                 imap_info("ok\n");
1007
1008                 for (ai0 = ai; ai; ai = ai->ai_next) {
1009                         char addr[NI_MAXHOST];
1010
1011                         s = socket(ai->ai_family, ai->ai_socktype,
1012                                    ai->ai_protocol);
1013                         if (s < 0)
1014                                 continue;
1015
1016                         getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1017                                     sizeof(addr), NULL, 0, NI_NUMERICHOST);
1018                         imap_info("Connecting to [%s]:%s... ", addr, portstr);
1019
1020                         if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1021                                 close(s);
1022                                 s = -1;
1023                                 perror("connect");
1024                                 continue;
1025                         }
1026
1027                         break;
1028                 }
1029                 freeaddrinfo(ai0);
1030 #else /* NO_IPV6 */
1031                 struct hostent *he;
1032                 struct sockaddr_in addr;
1033
1034                 memset(&addr, 0, sizeof(addr));
1035                 addr.sin_port = htons(srvc->port);
1036                 addr.sin_family = AF_INET;
1037
1038                 imap_info("Resolving %s... ", srvc->host);
1039                 he = gethostbyname(srvc->host);
1040                 if (!he) {
1041                         perror("gethostbyname");
1042                         goto bail;
1043                 }
1044                 imap_info("ok\n");
1045
1046                 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1047
1048                 s = socket(PF_INET, SOCK_STREAM, 0);
1049
1050                 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1051                 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1052                         close(s);
1053                         s = -1;
1054                         perror("connect");
1055                 }
1056 #endif
1057                 if (s < 0) {
1058                         fputs("Error: unable to connect to server.\n", stderr);
1059                         goto bail;
1060                 }
1061
1062                 imap->buf.sock.fd[0] = s;
1063                 imap->buf.sock.fd[1] = dup(s);
1064
1065                 if (srvc->use_ssl &&
1066                     ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1067                         close(s);
1068                         goto bail;
1069                 }
1070                 imap_info("ok\n");
1071         }
1072
1073         /* read the greeting string */
1074         if (buffer_gets(&imap->buf, &rsp)) {
1075                 fprintf(stderr, "IMAP error: no greeting response\n");
1076                 goto bail;
1077         }
1078         arg = next_arg(&rsp);
1079         if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1080                 fprintf(stderr, "IMAP error: invalid greeting response\n");
1081                 goto bail;
1082         }
1083         preauth = 0;
1084         if (!strcmp("PREAUTH", arg))
1085                 preauth = 1;
1086         else if (strcmp("OK", arg) != 0) {
1087                 fprintf(stderr, "IMAP error: unknown greeting response\n");
1088                 goto bail;
1089         }
1090         parse_response_code(ctx, NULL, rsp);
1091         if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1092                 goto bail;
1093
1094         if (!preauth) {
1095 #ifndef NO_OPENSSL
1096                 if (!srvc->use_ssl && CAP(STARTTLS)) {
1097                         if (imap_exec(ctx, 0, "STARTTLS") != RESP_OK)
1098                                 goto bail;
1099                         if (ssl_socket_connect(&imap->buf.sock, 1,
1100                                                srvc->ssl_verify))
1101                                 goto bail;
1102                         /* capabilities may have changed, so get the new capabilities */
1103                         if (imap_exec(ctx, 0, "CAPABILITY") != RESP_OK)
1104                                 goto bail;
1105                 }
1106 #endif
1107                 imap_info("Logging in...\n");
1108                 if (!srvc->user) {
1109                         fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
1110                         goto bail;
1111                 }
1112                 if (!srvc->pass) {
1113                         char prompt[80];
1114                         sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host);
1115                         arg = getpass(prompt);
1116                         if (!arg) {
1117                                 perror("getpass");
1118                                 exit(1);
1119                         }
1120                         if (!*arg) {
1121                                 fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
1122                                 goto bail;
1123                         }
1124                         /*
1125                          * getpass() returns a pointer to a static buffer.  make a copy
1126                          * for long term storage.
1127                          */
1128                         srvc->pass = xstrdup(arg);
1129                 }
1130                 if (CAP(NOLOGIN)) {
1131                         fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1132                         goto bail;
1133                 }
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");
1139                         goto bail;
1140                 }
1141         } /* !preauth */
1142
1143         ctx->prefix = "";
1144         ctx->trashnc = 1;
1145         return (struct store *)ctx;
1146
1147 bail:
1148         imap_close_store(&ctx->gen);
1149         return NULL;
1150 }
1151
1152 static int imap_make_flags(int flags, char *buf)
1153 {
1154         const char *s;
1155         unsigned i, d;
1156
1157         for (i = d = 0; i < ARRAY_SIZE(Flags); i++)
1158                 if (flags & (1 << i)) {
1159                         buf[d++] = ' ';
1160                         buf[d++] = '\\';
1161                         for (s = Flags[i]; *s; s++)
1162                                 buf[d++] = *s;
1163                 }
1164         buf[0] = '(';
1165         buf[d++] = ')';
1166         return d;
1167 }
1168
1169 static int imap_store_msg(struct store *gctx, struct msg_data *data)
1170 {
1171         struct imap_store *ctx = (struct imap_store *)gctx;
1172         struct imap *imap = ctx->imap;
1173         struct imap_cmd_cb cb;
1174         const char *prefix, *box;
1175         int ret, d;
1176         char flagstr[128];
1177
1178         memset(&cb, 0, sizeof(cb));
1179
1180         cb.dlen = data->len;
1181         cb.data = xmalloc(cb.dlen);
1182         memcpy(cb.data, data->data, data->len);
1183
1184         d = 0;
1185         if (data->flags) {
1186                 d = imap_make_flags(data->flags, flagstr);
1187                 flagstr[d++] = ' ';
1188         }
1189         flagstr[d] = 0;
1190
1191         box = gctx->name;
1192         prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1193         cb.create = 0;
1194         ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
1195         imap->caps = imap->rcaps;
1196         if (ret != DRV_OK)
1197                 return ret;
1198         gctx->count++;
1199
1200         return DRV_OK;
1201 }
1202
1203 static void encode_html_chars(struct strbuf *p)
1204 {
1205         int i;
1206         for (i = 0; i < p->len; i++) {
1207                 if (p->buf[i] == '&')
1208                         strbuf_splice(p, i, 1, "&amp;", 5);
1209                 if (p->buf[i] == '<')
1210                         strbuf_splice(p, i, 1, "&lt;", 4);
1211                 if (p->buf[i] == '>')
1212                         strbuf_splice(p, i, 1, "&gt;", 4);
1213                 if (p->buf[i] == '"')
1214                         strbuf_splice(p, i, 1, "&quot;", 6);
1215         }
1216 }
1217 static void wrap_in_html(struct msg_data *msg)
1218 {
1219         struct strbuf buf = STRBUF_INIT;
1220         struct strbuf **lines;
1221         struct strbuf **p;
1222         static char *content_type = "Content-Type: text/html;\n";
1223         static char *pre_open = "<pre>\n";
1224         static char *pre_close = "</pre>\n";
1225         int added_header = 0;
1226
1227         strbuf_attach(&buf, msg->data, msg->len, msg->len);
1228         lines = strbuf_split(&buf, '\n');
1229         strbuf_release(&buf);
1230         for (p = lines; *p; p++) {
1231                 if (! added_header) {
1232                         if ((*p)->len == 1 && *((*p)->buf) == '\n') {
1233                                 strbuf_addstr(&buf, content_type);
1234                                 strbuf_addbuf(&buf, *p);
1235                                 strbuf_addstr(&buf, pre_open);
1236                                 added_header = 1;
1237                                 continue;
1238                         }
1239                 }
1240                 else
1241                         encode_html_chars(*p);
1242                 strbuf_addbuf(&buf, *p);
1243         }
1244         strbuf_addstr(&buf, pre_close);
1245         strbuf_list_free(lines);
1246         msg->len  = buf.len;
1247         msg->data = strbuf_detach(&buf, NULL);
1248 }
1249
1250 #define CHUNKSIZE 0x1000
1251
1252 static int read_message(FILE *f, struct msg_data *msg)
1253 {
1254         struct strbuf buf = STRBUF_INIT;
1255
1256         memset(msg, 0, sizeof(*msg));
1257
1258         do {
1259                 if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
1260                         break;
1261         } while (!feof(f));
1262
1263         msg->len  = buf.len;
1264         msg->data = strbuf_detach(&buf, NULL);
1265         return msg->len;
1266 }
1267
1268 static int count_messages(struct msg_data *msg)
1269 {
1270         int count = 0;
1271         char *p = msg->data;
1272
1273         while (1) {
1274                 if (!prefixcmp(p, "From ")) {
1275                         count++;
1276                         p += 5;
1277                 }
1278                 p = strstr(p+5, "\nFrom ");
1279                 if (!p)
1280                         break;
1281                 p++;
1282         }
1283         return count;
1284 }
1285
1286 static int split_msg(struct msg_data *all_msgs, struct msg_data *msg, int *ofs)
1287 {
1288         char *p, *data;
1289
1290         memset(msg, 0, sizeof *msg);
1291         if (*ofs >= all_msgs->len)
1292                 return 0;
1293
1294         data = &all_msgs->data[*ofs];
1295         msg->len = all_msgs->len - *ofs;
1296
1297         if (msg->len < 5 || prefixcmp(data, "From "))
1298                 return 0;
1299
1300         p = strchr(data, '\n');
1301         if (p) {
1302                 p = &p[1];
1303                 msg->len -= p-data;
1304                 *ofs += p-data;
1305                 data = p;
1306         }
1307
1308         p = strstr(data, "\nFrom ");
1309         if (p)
1310                 msg->len = &p[1] - data;
1311
1312         msg->data = xmemdupz(data, msg->len);
1313         *ofs += msg->len;
1314         return 1;
1315 }
1316
1317 static struct imap_server_conf server = {
1318         NULL,   /* name */
1319         NULL,   /* tunnel */
1320         NULL,   /* host */
1321         0,      /* port */
1322         NULL,   /* user */
1323         NULL,   /* pass */
1324         0,      /* use_ssl */
1325         1,      /* ssl_verify */
1326         0,      /* use_html */
1327 };
1328
1329 static char *imap_folder;
1330
1331 static int git_imap_config(const char *key, const char *val, void *cb)
1332 {
1333         char imap_key[] = "imap.";
1334
1335         if (strncmp(key, imap_key, sizeof imap_key - 1))
1336                 return 0;
1337
1338         if (!val)
1339                 return config_error_nonbool(key);
1340
1341         key += sizeof imap_key - 1;
1342
1343         if (!strcmp("folder", key)) {
1344                 imap_folder = xstrdup(val);
1345         } else if (!strcmp("host", key)) {
1346                 if (!prefixcmp(val, "imap:"))
1347                         val += 5;
1348                 else if (!prefixcmp(val, "imaps:")) {
1349                         val += 6;
1350                         server.use_ssl = 1;
1351                 }
1352                 if (!prefixcmp(val, "//"))
1353                         val += 2;
1354                 server.host = xstrdup(val);
1355         } else if (!strcmp("user", key))
1356                 server.user = xstrdup(val);
1357         else if (!strcmp("pass", key))
1358                 server.pass = xstrdup(val);
1359         else if (!strcmp("port", key))
1360                 server.port = git_config_int(key, val);
1361         else if (!strcmp("tunnel", key))
1362                 server.tunnel = xstrdup(val);
1363         else if (!strcmp("sslverify", key))
1364                 server.ssl_verify = git_config_bool(key, val);
1365         else if (!strcmp("preformattedHTML", key))
1366                 server.use_html = git_config_bool(key, val);
1367         return 0;
1368 }
1369
1370 int main(int argc, char **argv)
1371 {
1372         struct msg_data all_msgs, msg;
1373         struct store *ctx = NULL;
1374         int ofs = 0;
1375         int r;
1376         int total, n = 0;
1377         int nongit_ok;
1378
1379         git_extract_argv0_path(argv[0]);
1380
1381         if (argc != 1)
1382                 usage(imap_send_usage);
1383
1384         setup_git_directory_gently(&nongit_ok);
1385         git_config(git_imap_config, NULL);
1386
1387         if (!server.port)
1388                 server.port = server.use_ssl ? 993 : 143;
1389
1390         if (!imap_folder) {
1391                 fprintf(stderr, "no imap store specified\n");
1392                 return 1;
1393         }
1394         if (!server.host) {
1395                 if (!server.tunnel) {
1396                         fprintf(stderr, "no imap host specified\n");
1397                         return 1;
1398                 }
1399                 server.host = "tunnel";
1400         }
1401
1402         /* read the messages */
1403         if (!read_message(stdin, &all_msgs)) {
1404                 fprintf(stderr, "nothing to send\n");
1405                 return 1;
1406         }
1407
1408         total = count_messages(&all_msgs);
1409         if (!total) {
1410                 fprintf(stderr, "no messages to send\n");
1411                 return 1;
1412         }
1413
1414         /* write it to the imap server */
1415         ctx = imap_open_store(&server);
1416         if (!ctx) {
1417                 fprintf(stderr, "failed to open store\n");
1418                 return 1;
1419         }
1420
1421         fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1422         ctx->name = imap_folder;
1423         while (1) {
1424                 unsigned percent = n * 100 / total;
1425                 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1426                 if (!split_msg(&all_msgs, &msg, &ofs))
1427                         break;
1428                 if (server.use_html)
1429                         wrap_in_html(&msg);
1430                 r = imap_store_msg(ctx, &msg);
1431                 if (r != DRV_OK)
1432                         break;
1433                 n++;
1434         }
1435         fprintf(stderr, "\n");
1436
1437         imap_close_store(ctx);
1438
1439         return 0;
1440 }