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 };
  95
  96 static const char imap_send_usage[] = "git imap-send < <mbox>";
  97
  98 #undef DRV_OK
  99 #define DRV_OK          0
 100 #define DRV_MSG_BAD     -1
 101 #define DRV_BOX_BAD     -2
 102 #define DRV_STORE_BAD   -3
 103
 104 static int Verbose, Quiet;
 105
 106 __attribute__((format (printf, 1, 2)))
 107 static void imap_info(const char *, ...);
 108 __attribute__((format (printf, 1, 2)))
 109 static void imap_warn(const char *, ...);
 110
 111 static char *next_arg(char **);
 112
 113 static void free_generic_messages(struct message *);
 114
 115 __attribute__((format (printf, 3, 4)))
 116 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
 117
 118 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
 119 {
 120         int len;
 121         char tmp[8192];
 122
 123         len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
 124         if (len < 0)
 125                 die("Fatal: Out of memory");
 126         if (len >= sizeof(tmp))
 127                 die("imap command overflow!");
 128         *strp = xmemdupz(tmp, len);
 129         return len;
 130 }
 131
 132 struct imap_server_conf {
 133         char *name;
 134         char *tunnel;
 135         char *host;
 136         int port;
 137         char *user;
 138         char *pass;
 139         int use_ssl;
 140         int ssl_verify;
 141         int use_html;
 142 };
 143
 144 struct imap_store_conf {
 145         struct store_conf gen;
 146         struct imap_server_conf *server;
 147         unsigned use_namespace:1;
 148 };
 149
 150 #define NIL     (void *)0x1
 151 #define LIST    (void *)0x2
 152
 153 struct imap_list {
 154         struct imap_list *next, *child;
 155         char *val;
 156         int len;
 157 };
 158
 159 struct imap_socket {
 160         int fd[2];
 161         SSL *ssl;
 162 };
 163
 164 struct imap_buffer {
 165         struct imap_socket sock;
 166         int bytes;
 167         int offset;
 168         char buf[1024];
 169 };
 170
 171 struct imap_cmd;
 172
 173 struct imap {
 174         int uidnext; /* from SELECT responses */
 175         struct imap_list *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
 176         unsigned caps, rcaps; /* CAPABILITY results */
 177         /* command queue */
 178         int nexttag, num_in_progress, literal_pending;
 179         struct imap_cmd *in_progress, **in_progress_append;
 180         struct imap_buffer buf; /* this is BIG, so put it last */
 181 };
 182
 183 struct imap_store {
 184         struct store gen;
 185         int uidvalidity;
 186         struct imap *imap;
 187         const char *prefix;
 188         unsigned /*currentnc:1,*/ trashnc:1;
 189 };
 190
 191 struct imap_cmd_cb {
 192         int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
 193         void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
 194         void *ctx;
 195         char *data;
 196         int dlen;
 197         int uid;
 198         unsigned create:1, trycreate:1;
 199 };
 200
 201 struct imap_cmd {
 202         struct imap_cmd *next;
 203         struct imap_cmd_cb cb;
 204         char *cmd;
 205         int tag;
 206 };
 207
 208 #define CAP(cap) (imap->caps & (1 << (cap)))
 209
 210 enum CAPABILITY {
 211         NOLOGIN = 0,
 212         UIDPLUS,
 213         LITERALPLUS,
 214         NAMESPACE,
 215         STARTTLS,
 216 };
 217
 218 static const char *cap_list[] = {
 219         "LOGINDISABLED",
 220         "UIDPLUS",
 221         "LITERAL+",
 222         "NAMESPACE",
 223         "STARTTLS",
 224 };
 225
 226 #define RESP_OK    0
 227 #define RESP_NO    1
 228 #define RESP_BAD   2
 229
 230 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
 231
 232
 233 static const char *Flags[] = {
 234         "Draft",
 235         "Flagged",
 236         "Answered",
 237         "Seen",
 238         "Deleted",
 239 };
 240
 241 #ifndef NO_OPENSSL
 242 static void ssl_socket_perror(const char *func)
 243 {
 244         fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
 245 }
 246 #endif
 247
 248 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
 249 {
 250 #ifndef NO_OPENSSL
 251         if (sock->ssl) {
 252                 int sslerr = SSL_get_error(sock->ssl, ret);
 253                 switch (sslerr) {
 254                 case SSL_ERROR_NONE:
 255                         break;
 256                 case SSL_ERROR_SYSCALL:
 257                         perror("SSL_connect");
 258                         break;
 259                 default:
 260                         ssl_socket_perror("SSL_connect");
 261                         break;
 262                 }
 263         } else
 264 #endif
 265         {
 266                 if (ret < 0)
 267                         perror(func);
 268                 else
 269                         fprintf(stderr, "%s: unexpected EOF\n", func);
 270         }
 271 }
 272
 273 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
 274 {
 275 #ifdef NO_OPENSSL
 276         fprintf(stderr, "SSL requested but SSL support not compiled in\n");
 277         return -1;
 278 #else
 279 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
 280         const SSL_METHOD *meth;
 281 #else
 282         SSL_METHOD *meth;
 283 #endif
 284         SSL_CTX *ctx;
 285         int ret;
 286
 287         SSL_library_init();
 288         SSL_load_error_strings();
 289
 290         if (use_tls_only)
 291                 meth = TLSv1_method();
 292         else
 293                 meth = SSLv23_method();
 294
 295         if (!meth) {
 296                 ssl_socket_perror("SSLv23_method");
 297                 return -1;
 298         }
 299
 300         ctx = SSL_CTX_new(meth);
 301
 302         if (verify)
 303                 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
 304
 305         if (!SSL_CTX_set_default_verify_paths(ctx)) {
 306                 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
 307                 return -1;
 308         }
 309         sock->ssl = SSL_new(ctx);
 310         if (!sock->ssl) {
 311                 ssl_socket_perror("SSL_new");
 312                 return -1;
 313         }
 314         if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
 315                 ssl_socket_perror("SSL_set_rfd");
 316                 return -1;
 317         }
 318         if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
 319                 ssl_socket_perror("SSL_set_wfd");
 320                 return -1;
 321         }
 322
 323         ret = SSL_connect(sock->ssl);
 324         if (ret <= 0) {
 325                 socket_perror("SSL_connect", sock, ret);
 326                 return -1;
 327         }
 328
 329         return 0;
 330 #endif
 331 }
 332
 333 static int socket_read(struct imap_socket *sock, char *buf, int len)
 334 {
 335         ssize_t n;
 336 #ifndef NO_OPENSSL
 337         if (sock->ssl)
 338                 n = SSL_read(sock->ssl, buf, len);
 339         else
 340 #endif
 341                 n = xread(sock->fd[0], buf, len);
 342         if (n <= 0) {
 343                 socket_perror("read", sock, n);
 344                 close(sock->fd[0]);
 345                 close(sock->fd[1]);
 346                 sock->fd[0] = sock->fd[1] = -1;
 347         }
 348         return n;
 349 }
 350
 351 static int socket_write(struct imap_socket *sock, const char *buf, int len)
 352 {
 353         int n;
 354 #ifndef NO_OPENSSL
 355         if (sock->ssl)
 356                 n = SSL_write(sock->ssl, buf, len);
 357         else
 358 #endif
 359                 n = write_in_full(sock->fd[1], buf, len);
 360         if (n != len) {
 361                 socket_perror("write", sock, n);
 362                 close(sock->fd[0]);
 363                 close(sock->fd[1]);
 364                 sock->fd[0] = sock->fd[1] = -1;
 365         }
 366         return n;
 367 }
 368
 369 static void socket_shutdown(struct imap_socket *sock)
 370 {
 371 #ifndef NO_OPENSSL
 372         if (sock->ssl) {
 373                 SSL_shutdown(sock->ssl);
 374                 SSL_free(sock->ssl);
 375         }
 376 #endif
 377         close(sock->fd[0]);
 378         close(sock->fd[1]);
 379 }
 380
 381 /* simple line buffering */
 382 static int buffer_gets(struct imap_buffer *b, char **s)
 383 {
 384         int n;
 385         int start = b->offset;
 386
 387         *s = b->buf + start;
 388
 389         for (;;) {
 390                 /* make sure we have enough data to read the \r\n sequence */
 391                 if (b->offset + 1 >= b->bytes) {
 392                         if (start) {
 393                                 /* shift down used bytes */
 394                                 *s = b->buf;
 395
 396                                 assert(start <= b->bytes);
 397                                 n = b->bytes - start;
 398
 399                                 if (n)
 400                                         memmove(b->buf, b->buf + start, n);
 401                                 b->offset -= start;
 402                                 b->bytes = n;
 403                                 start = 0;
 404                         }
 405
 406                         n = socket_read(&b->sock, b->buf + b->bytes,
 407                                          sizeof(b->buf) - b->bytes);
 408
 409                         if (n <= 0)
 410                                 return -1;
 411
 412                         b->bytes += n;
 413                 }
 414
 415                 if (b->buf[b->offset] == '\r') {
 416                         assert(b->offset + 1 < b->bytes);
 417                         if (b->buf[b->offset + 1] == '\n') {
 418                                 b->buf[b->offset] = 0;  /* terminate the string */
 419                                 b->offset += 2; /* next line */
 420                                 if (Verbose)
 421                                         puts(*s);
 422                                 return 0;
 423                         }
 424                 }
 425
 426                 b->offset++;
 427         }
 428         /* not reached */
 429 }
 430
 431 static void imap_info(const char *msg, ...)
 432 {
 433         va_list va;
 434
 435         if (!Quiet) {
 436                 va_start(va, msg);
 437                 vprintf(msg, va);
 438                 va_end(va);
 439                 fflush(stdout);
 440         }
 441 }
 442
 443 static void imap_warn(const char *msg, ...)
 444 {
 445         va_list va;
 446
 447         if (Quiet < 2) {
 448                 va_start(va, msg);
 449                 vfprintf(stderr, msg, va);
 450                 va_end(va);
 451         }
 452 }
 453
 454 static char *next_arg(char **s)
 455 {
 456         char *ret;
 457
 458         if (!s || !*s)
 459                 return NULL;
 460         while (isspace((unsigned char) **s))
 461                 (*s)++;
 462         if (!**s) {
 463                 *s = NULL;
 464                 return NULL;
 465         }
 466         if (**s == '"') {
 467                 ++*s;
 468                 ret = *s;
 469                 *s = strchr(*s, '"');
 470         } else {
 471                 ret = *s;
 472                 while (**s && !isspace((unsigned char) **s))
 473                         (*s)++;
 474         }
 475         if (*s) {
 476                 if (**s)
 477                         *(*s)++ = 0;
 478                 if (!**s)
 479                         *s = NULL;
 480         }
 481         return ret;
 482 }
 483
 484 static void free_generic_messages(struct message *msgs)
 485 {
 486         struct message *tmsg;
 487
 488         for (; msgs; msgs = tmsg) {
 489                 tmsg = msgs->next;
 490                 free(msgs);
 491         }
 492 }
 493
 494 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
 495 {
 496         int ret;
 497         va_list va;
 498
 499         va_start(va, fmt);
 500         if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
 501                 die("Fatal: buffer too small. Please report a bug.");
 502         va_end(va);
 503         return ret;
 504 }
 505
 506 static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
 507                                          struct imap_cmd_cb *cb,
 508                                          const char *fmt, va_list ap)
 509 {
 510         struct imap *imap = ctx->imap;
 511         struct imap_cmd *cmd;
 512         int n, bufl;
 513         char buf[1024];
 514
 515         cmd = xmalloc(sizeof(struct imap_cmd));
 516         nfvasprintf(&cmd->cmd, fmt, ap);
 517         cmd->tag = ++imap->nexttag;
 518
 519         if (cb)
 520                 cmd->cb = *cb;
 521         else
 522                 memset(&cmd->cb, 0, sizeof(cmd->cb));
 523
 524         while (imap->literal_pending)
 525                 get_cmd_result(ctx, NULL);
 526
 527         bufl = nfsnprintf(buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
 528                            "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
 529                            cmd->tag, cmd->cmd, cmd->cb.dlen);
 530         if (Verbose) {
 531                 if (imap->num_in_progress)
 532                         printf("(%d in progress) ", imap->num_in_progress);
 533                 if (memcmp(cmd->cmd, "LOGIN", 5))
 534                         printf(">>> %s", buf);
 535                 else
 536                         printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
 537         }
 538         if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
 539                 free(cmd->cmd);
 540                 free(cmd);
 541                 if (cb)
 542                         free(cb->data);
 543                 return NULL;
 544         }
 545         if (cmd->cb.data) {
 546                 if (CAP(LITERALPLUS)) {
 547                         n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
 548                         free(cmd->cb.data);
 549                         if (n != cmd->cb.dlen ||
 550                             socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
 551                                 free(cmd->cmd);
 552                                 free(cmd);
 553                                 return NULL;
 554                         }
 555                         cmd->cb.data = NULL;
 556                 } else
 557                         imap->literal_pending = 1;
 558         } else if (cmd->cb.cont)
 559                 imap->literal_pending = 1;
 560         cmd->next = NULL;
 561         *imap->in_progress_append = cmd;
 562         imap->in_progress_append = &cmd->next;
 563         imap->num_in_progress++;
 564         return cmd;
 565 }
 566
 567 __attribute__((format (printf, 3, 4)))
 568 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
 569                                        struct imap_cmd_cb *cb,
 570                                        const char *fmt, ...)
 571 {
 572         struct imap_cmd *ret;
 573         va_list ap;
 574
 575         va_start(ap, fmt);
 576         ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
 577         va_end(ap);
 578         return ret;
 579 }
 580
 581 __attribute__((format (printf, 3, 4)))
 582 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
 583                      const char *fmt, ...)
 584 {
 585         va_list ap;
 586         struct imap_cmd *cmdp;
 587
 588         va_start(ap, fmt);
 589         cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 590         va_end(ap);
 591         if (!cmdp)
 592                 return RESP_BAD;
 593
 594         return get_cmd_result(ctx, cmdp);
 595 }
 596
 597 __attribute__((format (printf, 3, 4)))
 598 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
 599                        const char *fmt, ...)
 600 {
 601         va_list ap;
 602         struct imap_cmd *cmdp;
 603
 604         va_start(ap, fmt);
 605         cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 606         va_end(ap);
 607         if (!cmdp)
 608                 return DRV_STORE_BAD;
 609
 610         switch (get_cmd_result(ctx, cmdp)) {
 611         case RESP_BAD: return DRV_STORE_BAD;
 612         case RESP_NO: return DRV_MSG_BAD;
 613         default: return DRV_OK;
 614         }
 615 }
 616
 617 static int is_atom(struct imap_list *list)
 618 {
 619         return list && list->val && list->val != NIL && list->val != LIST;
 620 }
 621
 622 static int is_list(struct imap_list *list)
 623 {
 624         return list && list->val == LIST;
 625 }
 626
 627 static void free_list(struct imap_list *list)
 628 {
 629         struct imap_list *tmp;
 630
 631         for (; list; list = tmp) {
 632                 tmp = list->next;
 633                 if (is_list(list))
 634                         free_list(list->child);
 635                 else if (is_atom(list))
 636                         free(list->val);
 637                 free(list);
 638         }
 639 }
 640
 641 static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
 642 {
 643         struct imap_list *cur;
 644         char *s = *sp, *p;
 645         int n, bytes;
 646
 647         for (;;) {
 648                 while (isspace((unsigned char)*s))
 649                         s++;
 650                 if (level && *s == ')') {
 651                         s++;
 652                         break;
 653                 }
 654                 *curp = cur = xmalloc(sizeof(*cur));
 655                 curp = &cur->next;
 656                 cur->val = NULL; /* for clean bail */
 657                 if (*s == '(') {
 658                         /* sublist */
 659                         s++;
 660                         cur->val = LIST;
 661                         if (parse_imap_list_l(imap, &s, &cur->child, level + 1))
 662                                 goto bail;
 663                 } else if (imap && *s == '{') {
 664                         /* literal */
 665                         bytes = cur->len = strtol(s + 1, &s, 10);
 666                         if (*s != '}')
 667                                 goto bail;
 668
 669                         s = cur->val = xmalloc(cur->len);
 670
 671                         /* dump whats left over in the input buffer */
 672                         n = imap->buf.bytes - imap->buf.offset;
 673
 674                         if (n > bytes)
 675                                 /* the entire message fit in the buffer */
 676                                 n = bytes;
 677
 678                         memcpy(s, imap->buf.buf + imap->buf.offset, n);
 679                         s += n;
 680                         bytes -= n;
 681
 682                         /* mark that we used part of the buffer */
 683                         imap->buf.offset += n;
 684
 685                         /* now read the rest of the message */
 686                         while (bytes > 0) {
 687                                 if ((n = socket_read(&imap->buf.sock, s, bytes)) <= 0)
 688                                         goto bail;
 689                                 s += n;
 690                                 bytes -= n;
 691                         }
 692
 693                         if (buffer_gets(&imap->buf, &s))
 694                                 goto bail;
 695                 } else if (*s == '"') {
 696                         /* quoted string */
 697                         s++;
 698                         p = s;
 699                         for (; *s != '"'; s++)
 700                                 if (!*s)
 701                                         goto bail;
 702                         cur->len = s - p;
 703                         s++;
 704                         cur->val = xmemdupz(p, cur->len);
 705                 } else {
 706                         /* atom */
 707                         p = s;
 708                         for (; *s && !isspace((unsigned char)*s); s++)
 709                                 if (level && *s == ')')
 710                                         break;
 711                         cur->len = s - p;
 712                         if (cur->len == 3 && !memcmp("NIL", p, 3))
 713                                 cur->val = NIL;
 714                         else
 715                                 cur->val = xmemdupz(p, cur->len);
 716                 }
 717
 718                 if (!level)
 719                         break;
 720                 if (!*s)
 721                         goto bail;
 722         }
 723         *sp = s;
 724         *curp = NULL;
 725         return 0;
 726
 727 bail:
 728         *curp = NULL;
 729         return -1;
 730 }
 731
 732 static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
 733 {
 734         struct imap_list *head;
 735
 736         if (!parse_imap_list_l(imap, sp, &head, 0))
 737                 return head;
 738         free_list(head);
 739         return NULL;
 740 }
 741
 742 static struct imap_list *parse_list(char **sp)
 743 {
 744         return parse_imap_list(NULL, sp);
 745 }
 746
 747 static void parse_capability(struct imap *imap, char *cmd)
 748 {
 749         char *arg;
 750         unsigned i;
 751
 752         imap->caps = 0x80000000;
 753         while ((arg = next_arg(&cmd)))
 754                 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
 755                         if (!strcmp(cap_list[i], arg))
 756                                 imap->caps |= 1 << i;
 757         imap->rcaps = imap->caps;
 758 }
 759
 760 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
 761                                char *s)
 762 {
 763         struct imap *imap = ctx->imap;
 764         char *arg, *p;
 765
 766         if (*s != '[')
 767                 return RESP_OK;         /* no response code */
 768         s++;
 769         if (!(p = strchr(s, ']'))) {
 770                 fprintf(stderr, "IMAP error: malformed response code\n");
 771                 return RESP_BAD;
 772         }
 773         *p++ = 0;
 774         arg = next_arg(&s);
 775         if (!strcmp("UIDVALIDITY", arg)) {
 776                 if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg))) {
 777                         fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
 778                         return RESP_BAD;
 779                 }
 780         } else if (!strcmp("UIDNEXT", arg)) {
 781                 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
 782                         fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
 783                         return RESP_BAD;
 784                 }
 785         } else if (!strcmp("CAPABILITY", arg)) {
 786                 parse_capability(imap, s);
 787         } else if (!strcmp("ALERT", arg)) {
 788                 /* RFC2060 says that these messages MUST be displayed
 789                  * to the user
 790                  */
 791                 for (; isspace((unsigned char)*p); p++);
 792                 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
 793         } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
 794                 if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg)) ||
 795                     !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
 796                         fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
 797                         return RESP_BAD;
 798                 }
 799         }
 800         return RESP_OK;
 801 }
 802
 803 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
 804 {
 805         struct imap *imap = ctx->imap;
 806         struct imap_cmd *cmdp, **pcmdp, *ncmdp;
 807         char *cmd, *arg, *arg1, *p;
 808         int n, resp, resp2, tag;
 809
 810         for (;;) {
 811                 if (buffer_gets(&imap->buf, &cmd))
 812                         return RESP_BAD;
 813
 814                 arg = next_arg(&cmd);
 815                 if (*arg == '*') {
 816                         arg = next_arg(&cmd);
 817                         if (!arg) {
 818                                 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 819                                 return RESP_BAD;
 820                         }
 821
 822                         if (!strcmp("NAMESPACE", arg)) {
 823                                 imap->ns_personal = parse_list(&cmd);
 824                                 imap->ns_other = parse_list(&cmd);
 825                                 imap->ns_shared = parse_list(&cmd);
 826                         } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
 827                                    !strcmp("NO", arg) || !strcmp("BYE", arg)) {
 828                                 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
 829                                         return resp;
 830                         } else if (!strcmp("CAPABILITY", arg))
 831                                 parse_capability(imap, cmd);
 832                         else if ((arg1 = next_arg(&cmd))) {
 833                                 if (!strcmp("EXISTS", arg1))
 834                                         ctx->gen.count = atoi(arg);
 835                                 else if (!strcmp("RECENT", arg1))
 836                                         ctx->gen.recent = atoi(arg);
 837                         } else {
 838                                 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 839                                 return RESP_BAD;
 840                         }
 841                 } else if (!imap->in_progress) {
 842                         fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
 843                         return RESP_BAD;
 844                 } else if (*arg == '+') {
 845                         /* This can happen only with the last command underway, as
 846                            it enforces a round-trip. */
 847                         cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
 848                                offsetof(struct imap_cmd, next));
 849                         if (cmdp->cb.data) {
 850                                 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
 851                                 free(cmdp->cb.data);
 852                                 cmdp->cb.data = NULL;
 853                                 if (n != (int)cmdp->cb.dlen)
 854                                         return RESP_BAD;
 855                         } else if (cmdp->cb.cont) {
 856                                 if (cmdp->cb.cont(ctx, cmdp, cmd))
 857                                         return RESP_BAD;
 858                         } else {
 859                                 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
 860                                 return RESP_BAD;
 861                         }
 862                         if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
 863                                 return RESP_BAD;
 864                         if (!cmdp->cb.cont)
 865                                 imap->literal_pending = 0;
 866                         if (!tcmd)
 867                                 return DRV_OK;
 868                 } else {
 869                         tag = atoi(arg);
 870                         for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
 871                                 if (cmdp->tag == tag)
 872                                         goto gottag;
 873                         fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
 874                         return RESP_BAD;
 875                 gottag:
 876                         if (!(*pcmdp = cmdp->next))
 877                                 imap->in_progress_append = pcmdp;
 878                         imap->num_in_progress--;
 879                         if (cmdp->cb.cont || cmdp->cb.data)
 880                                 imap->literal_pending = 0;
 881                         arg = next_arg(&cmd);
 882                         if (!strcmp("OK", arg))
 883                                 resp = DRV_OK;
 884                         else {
 885                                 if (!strcmp("NO", arg)) {
 886                                         if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
 887                                                 p = strchr(cmdp->cmd, '"');
 888                                                 if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) {
 889                                                         resp = RESP_BAD;
 890                                                         goto normal;
 891                                                 }
 892                                                 /* not waiting here violates the spec, but a server that does not
 893                                                    grok this nonetheless violates it too. */
 894                                                 cmdp->cb.create = 0;
 895                                                 if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
 896                                                         resp = RESP_BAD;
 897                                                         goto normal;
 898                                                 }
 899                                                 free(cmdp->cmd);
 900                                                 free(cmdp);
 901                                                 if (!tcmd)
 902                                                         return 0;       /* ignored */
 903                                                 if (cmdp == tcmd)
 904                                                         tcmd = ncmdp;
 905                                                 continue;
 906                                         }
 907                                         resp = RESP_NO;
 908                                 } else /*if (!strcmp("BAD", arg))*/
 909                                         resp = RESP_BAD;
 910                                 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
 911                                          memcmp(cmdp->cmd, "LOGIN", 5) ?
 912                                                         cmdp->cmd : "LOGIN <user> <pass>",
 913                                                         arg, cmd ? cmd : "");
 914                         }
 915                         if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
 916                                 resp = resp2;
 917                 normal:
 918                         if (cmdp->cb.done)
 919                                 cmdp->cb.done(ctx, cmdp, resp);
 920                         free(cmdp->cb.data);
 921                         free(cmdp->cmd);
 922                         free(cmdp);
 923                         if (!tcmd || tcmd == cmdp)
 924                                 return resp;
 925                 }
 926         }
 927         /* not reached */
 928 }
 929
 930 static void imap_close_server(struct imap_store *ictx)
 931 {
 932         struct imap *imap = ictx->imap;
 933
 934         if (imap->buf.sock.fd[0] != -1) {
 935                 imap_exec(ictx, NULL, "LOGOUT");
 936                 socket_shutdown(&imap->buf.sock);
 937         }
 938         free_list(imap->ns_personal);
 939         free_list(imap->ns_other);
 940         free_list(imap->ns_shared);
 941         free(imap);
 942 }
 943
 944 static void imap_close_store(struct store *ctx)
 945 {
 946         imap_close_server((struct imap_store *)ctx);
 947         free_generic_messages(ctx->msgs);
 948         free(ctx);
 949 }
 950
 951 static struct store *imap_open_store(struct imap_server_conf *srvc)
 952 {
 953         struct imap_store *ctx;
 954         struct imap *imap;
 955         char *arg, *rsp;
 956         int s = -1, preauth;
 957
 958         ctx = xcalloc(sizeof(*ctx), 1);
 959
 960         ctx->imap = imap = xcalloc(sizeof(*imap), 1);
 961         imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
 962         imap->in_progress_append = &imap->in_progress;
 963
 964         /* open connection to IMAP server */
 965
 966         if (srvc->tunnel) {
 967                 const char *argv[] = { srvc->tunnel, NULL };
 968                 struct child_process tunnel = {0};
 969
 970                 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
 971
 972                 tunnel.argv = argv;
 973                 tunnel.use_shell = 1;
 974                 tunnel.in = -1;
 975                 tunnel.out = -1;
 976                 if (start_command(&tunnel))
 977                         die("cannot start proxy %s", argv[0]);
 978
 979                 imap->buf.sock.fd[0] = tunnel.out;
 980                 imap->buf.sock.fd[1] = tunnel.in;
 981
 982                 imap_info("ok\n");
 983         } else {
 984 #ifndef NO_IPV6
 985                 struct addrinfo hints, *ai0, *ai;
 986                 int gai;
 987                 char portstr[6];
 988
 989                 snprintf(portstr, sizeof(portstr), "%hu", srvc->port);
 990
 991                 memset(&hints, 0, sizeof(hints));
 992                 hints.ai_socktype = SOCK_STREAM;
 993                 hints.ai_protocol = IPPROTO_TCP;
 994
 995                 imap_info("Resolving %s... ", srvc->host);
 996                 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
 997                 if (gai) {
 998                         fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
 999                         goto bail;
1000                 }
1001                 imap_info("ok\n");
1002
1003                 for (ai0 = ai; ai; ai = ai->ai_next) {
1004                         char addr[NI_MAXHOST];
1005
1006                         s = socket(ai->ai_family, ai->ai_socktype,
1007                                    ai->ai_protocol);
1008                         if (s < 0)
1009                                 continue;
1010
1011                         getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1012                                     sizeof(addr), NULL, 0, NI_NUMERICHOST);
1013                         imap_info("Connecting to [%s]:%s... ", addr, portstr);
1014
1015                         if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1016                                 close(s);
1017                                 s = -1;
1018                                 perror("connect");
1019                                 continue;
1020                         }
1021
1022                         break;
1023                 }
1024                 freeaddrinfo(ai0);
1025 #else /* NO_IPV6 */
1026                 struct hostent *he;
1027                 struct sockaddr_in addr;
1028
1029                 memset(&addr, 0, sizeof(addr));
1030                 addr.sin_port = htons(srvc->port);
1031                 addr.sin_family = AF_INET;
1032
1033                 imap_info("Resolving %s... ", srvc->host);
1034                 he = gethostbyname(srvc->host);
1035                 if (!he) {
1036                         perror("gethostbyname");
1037                         goto bail;
1038                 }
1039                 imap_info("ok\n");
1040
1041                 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1042
1043                 s = socket(PF_INET, SOCK_STREAM, 0);
1044
1045                 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1046                 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1047                         close(s);
1048                         s = -1;
1049                         perror("connect");
1050                 }
1051 #endif
1052                 if (s < 0) {
1053                         fputs("Error: unable to connect to server.\n", stderr);
1054                         goto bail;
1055                 }
1056
1057                 imap->buf.sock.fd[0] = s;
1058                 imap->buf.sock.fd[1] = dup(s);
1059
1060                 if (srvc->use_ssl &&
1061                     ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1062                         close(s);
1063                         goto bail;
1064                 }
1065                 imap_info("ok\n");
1066         }
1067
1068         /* read the greeting string */
1069         if (buffer_gets(&imap->buf, &rsp)) {
1070                 fprintf(stderr, "IMAP error: no greeting response\n");
1071                 goto bail;
1072         }
1073         arg = next_arg(&rsp);
1074         if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1075                 fprintf(stderr, "IMAP error: invalid greeting response\n");
1076                 goto bail;
1077         }
1078         preauth = 0;
1079         if (!strcmp("PREAUTH", arg))
1080                 preauth = 1;
1081         else if (strcmp("OK", arg) != 0) {
1082                 fprintf(stderr, "IMAP error: unknown greeting response\n");
1083                 goto bail;
1084         }
1085         parse_response_code(ctx, NULL, rsp);
1086         if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1087                 goto bail;
1088
1089         if (!preauth) {
1090 #ifndef NO_OPENSSL
1091                 if (!srvc->use_ssl && CAP(STARTTLS)) {
1092                         if (imap_exec(ctx, 0, "STARTTLS") != RESP_OK)
1093                                 goto bail;
1094                         if (ssl_socket_connect(&imap->buf.sock, 1,
1095                                                srvc->ssl_verify))
1096                                 goto bail;
1097                         /* capabilities may have changed, so get the new capabilities */
1098                         if (imap_exec(ctx, 0, "CAPABILITY") != RESP_OK)
1099                                 goto bail;
1100                 }
1101 #endif
1102                 imap_info("Logging in...\n");
1103                 if (!srvc->user) {
1104                         fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
1105                         goto bail;
1106                 }
1107                 if (!srvc->pass) {
1108                         char prompt[80];
1109                         sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host);
1110                         arg = getpass(prompt);
1111                         if (!arg) {
1112                                 perror("getpass");
1113                                 exit(1);
1114                         }
1115                         if (!*arg) {
1116                                 fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
1117                                 goto bail;
1118                         }
1119                         /*
1120                          * getpass() returns a pointer to a static buffer.  make a copy
1121                          * for long term storage.
1122                          */
1123                         srvc->pass = xstrdup(arg);
1124                 }
1125                 if (CAP(NOLOGIN)) {
1126                         fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1127                         goto bail;
1128                 }
1129                 if (!imap->buf.sock.ssl)
1130                         imap_warn("*** IMAP Warning *** Password is being "
1131                                   "sent in the clear\n");
1132                 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1133                         fprintf(stderr, "IMAP error: LOGIN failed\n");
1134                         goto bail;
1135                 }
1136         } /* !preauth */
1137
1138         ctx->prefix = "";
1139         ctx->trashnc = 1;
1140         return (struct store *)ctx;
1141
1142 bail:
1143         imap_close_store(&ctx->gen);
1144         return NULL;
1145 }
1146
1147 static int imap_make_flags(int flags, char *buf)
1148 {
1149         const char *s;
1150         unsigned i, d;
1151
1152         for (i = d = 0; i < ARRAY_SIZE(Flags); i++)
1153                 if (flags & (1 << i)) {
1154                         buf[d++] = ' ';
1155                         buf[d++] = '\\';
1156                         for (s = Flags[i]; *s; s++)
1157                                 buf[d++] = *s;
1158                 }
1159         buf[0] = '(';
1160         buf[d++] = ')';
1161         return d;
1162 }
1163
1164 static void lf_to_crlf(struct msg_data *msg)
1165 {
1166         char *new;
1167         int i, j, lfnum = 0;
1168
1169         if (msg->data[0] == '\n')
1170                 lfnum++;
1171         for (i = 1; i < msg->len; i++) {
1172                 if (msg->data[i - 1] != '\r' && msg->data[i] == '\n')
1173                         lfnum++;
1174         }
1175
1176         new = xmalloc(msg->len + lfnum);
1177         if (msg->data[0] == '\n') {
1178                 new[0] = '\r';
1179                 new[1] = '\n';
1180                 i = 1;
1181                 j = 2;
1182         } else {
1183                 new[0] = msg->data[0];
1184                 i = 1;
1185                 j = 1;
1186         }
1187         for ( ; i < msg->len; i++) {
1188                 if (msg->data[i] != '\n') {
1189                         new[j++] = msg->data[i];
1190                         continue;
1191                 }
1192                 if (msg->data[i - 1] != '\r')
1193                         new[j++] = '\r';
1194                 /* otherwise it already had CR before */
1195                 new[j++] = '\n';
1196         }
1197         msg->len += lfnum;
1198         free(msg->data);
1199         msg->data = new;
1200 }
1201
1202 static int imap_store_msg(struct store *gctx, struct msg_data *data)
1203 {
1204         struct imap_store *ctx = (struct imap_store *)gctx;
1205         struct imap *imap = ctx->imap;
1206         struct imap_cmd_cb cb;
1207         const char *prefix, *box;
1208         int ret, d;
1209         char flagstr[128];
1210
1211         lf_to_crlf(data);
1212         memset(&cb, 0, sizeof(cb));
1213
1214         cb.dlen = data->len;
1215         cb.data = xmalloc(cb.dlen);
1216         memcpy(cb.data, data->data, data->len);
1217
1218         d = 0;
1219         if (data->flags) {
1220                 d = imap_make_flags(data->flags, flagstr);
1221                 flagstr[d++] = ' ';
1222         }
1223         flagstr[d] = 0;
1224
1225         box = gctx->name;
1226         prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1227         cb.create = 0;
1228         ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
1229         imap->caps = imap->rcaps;
1230         if (ret != DRV_OK)
1231                 return ret;
1232         gctx->count++;
1233
1234         return DRV_OK;
1235 }
1236
1237 static void encode_html_chars(struct strbuf *p)
1238 {
1239         int i;
1240         for (i = 0; i < p->len; i++) {
1241                 if (p->buf[i] == '&')
1242                         strbuf_splice(p, i, 1, "&amp;", 5);
1243                 if (p->buf[i] == '<')
1244                         strbuf_splice(p, i, 1, "&lt;", 4);
1245                 if (p->buf[i] == '>')
1246                         strbuf_splice(p, i, 1, "&gt;", 4);
1247                 if (p->buf[i] == '"')
1248                         strbuf_splice(p, i, 1, "&quot;", 6);
1249         }
1250 }
1251 static void wrap_in_html(struct msg_data *msg)
1252 {
1253         struct strbuf buf = STRBUF_INIT;
1254         struct strbuf **lines;
1255         struct strbuf **p;
1256         static char *content_type = "Content-Type: text/html;\n";
1257         static char *pre_open = "<pre>\n";
1258         static char *pre_close = "</pre>\n";
1259         int added_header = 0;
1260
1261         strbuf_attach(&buf, msg->data, msg->len, msg->len);
1262         lines = strbuf_split(&buf, '\n');
1263         strbuf_release(&buf);
1264         for (p = lines; *p; p++) {
1265                 if (! added_header) {
1266                         if ((*p)->len == 1 && *((*p)->buf) == '\n') {
1267                                 strbuf_addstr(&buf, content_type);
1268                                 strbuf_addbuf(&buf, *p);
1269                                 strbuf_addstr(&buf, pre_open);
1270                                 added_header = 1;
1271                                 continue;
1272                         }
1273                 }
1274                 else
1275                         encode_html_chars(*p);
1276                 strbuf_addbuf(&buf, *p);
1277         }
1278         strbuf_addstr(&buf, pre_close);
1279         strbuf_list_free(lines);
1280         msg->len  = buf.len;
1281         msg->data = strbuf_detach(&buf, NULL);
1282 }
1283
1284 #define CHUNKSIZE 0x1000
1285
1286 static int read_message(FILE *f, struct msg_data *msg)
1287 {
1288         struct strbuf buf = STRBUF_INIT;
1289
1290         memset(msg, 0, sizeof(*msg));
1291
1292         do {
1293                 if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
1294                         break;
1295         } while (!feof(f));
1296
1297         msg->len  = buf.len;
1298         msg->data = strbuf_detach(&buf, NULL);
1299         return msg->len;
1300 }
1301
1302 static int count_messages(struct msg_data *msg)
1303 {
1304         int count = 0;
1305         char *p = msg->data;
1306
1307         while (1) {
1308                 if (!prefixcmp(p, "From ")) {
1309                         p = strstr(p+5, "\nFrom: ");
1310                         if (!p) break;
1311                         p = strstr(p+7, "\nDate: ");
1312                         if (!p) break;
1313                         p = strstr(p+7, "\nSubject: ");
1314                         if (!p) break;
1315                         p += 10;
1316                         count++;
1317                 }
1318                 p = strstr(p+5, "\nFrom ");
1319                 if (!p)
1320                         break;
1321                 p++;
1322         }
1323         return count;
1324 }
1325
1326 static int split_msg(struct msg_data *all_msgs, struct msg_data *msg, int *ofs)
1327 {
1328         char *p, *data;
1329
1330         memset(msg, 0, sizeof *msg);
1331         if (*ofs >= all_msgs->len)
1332                 return 0;
1333
1334         data = &all_msgs->data[*ofs];
1335         msg->len = all_msgs->len - *ofs;
1336
1337         if (msg->len < 5 || prefixcmp(data, "From "))
1338                 return 0;
1339
1340         p = strchr(data, '\n');
1341         if (p) {
1342                 p = &p[1];
1343                 msg->len -= p-data;
1344                 *ofs += p-data;
1345                 data = p;
1346         }
1347
1348         p = strstr(data, "\nFrom ");
1349         if (p)
1350                 msg->len = &p[1] - data;
1351
1352         msg->data = xmemdupz(data, msg->len);
1353         *ofs += msg->len;
1354         return 1;
1355 }
1356
1357 static struct imap_server_conf server = {
1358         NULL,   /* name */
1359         NULL,   /* tunnel */
1360         NULL,   /* host */
1361         0,      /* port */
1362         NULL,   /* user */
1363         NULL,   /* pass */
1364         0,      /* use_ssl */
1365         1,      /* ssl_verify */
1366         0,      /* use_html */
1367 };
1368
1369 static char *imap_folder;
1370
1371 static int git_imap_config(const char *key, const char *val, void *cb)
1372 {
1373         char imap_key[] = "imap.";
1374
1375         if (strncmp(key, imap_key, sizeof imap_key - 1))
1376                 return 0;
1377
1378         key += sizeof imap_key - 1;
1379
1380         /* check booleans first, and barf on others */
1381         if (!strcmp("sslverify", key))
1382                 server.ssl_verify = git_config_bool(key, val);
1383         else if (!strcmp("preformattedhtml", key))
1384                 server.use_html = git_config_bool(key, val);
1385         else if (!val)
1386                 return config_error_nonbool(key);
1387
1388         if (!strcmp("folder", key)) {
1389                 imap_folder = xstrdup(val);
1390         } else if (!strcmp("host", key)) {
1391                 if (!prefixcmp(val, "imap:"))
1392                         val += 5;
1393                 else if (!prefixcmp(val, "imaps:")) {
1394                         val += 6;
1395                         server.use_ssl = 1;
1396                 }
1397                 if (!prefixcmp(val, "//"))
1398                         val += 2;
1399                 server.host = xstrdup(val);
1400         } else if (!strcmp("user", key))
1401                 server.user = xstrdup(val);
1402         else if (!strcmp("pass", key))
1403                 server.pass = xstrdup(val);
1404         else if (!strcmp("port", key))
1405                 server.port = git_config_int(key, val);
1406         else if (!strcmp("tunnel", key))
1407                 server.tunnel = xstrdup(val);
1408         return 0;
1409 }
1410
1411 int main(int argc, char **argv)
1412 {
1413         struct msg_data all_msgs, msg;
1414         struct store *ctx = NULL;
1415         int ofs = 0;
1416         int r;
1417         int total, n = 0;
1418         int nongit_ok;
1419
1420         git_extract_argv0_path(argv[0]);
1421
1422         if (argc != 1)
1423                 usage(imap_send_usage);
1424
1425         setup_git_directory_gently(&nongit_ok);
1426         git_config(git_imap_config, NULL);
1427
1428         if (!server.port)
1429                 server.port = server.use_ssl ? 993 : 143;
1430
1431         if (!imap_folder) {
1432                 fprintf(stderr, "no imap store specified\n");
1433                 return 1;
1434         }
1435         if (!server.host) {
1436                 if (!server.tunnel) {
1437                         fprintf(stderr, "no imap host specified\n");
1438                         return 1;
1439                 }
1440                 server.host = "tunnel";
1441         }
1442
1443         /* read the messages */
1444         if (!read_message(stdin, &all_msgs)) {
1445                 fprintf(stderr, "nothing to send\n");
1446                 return 1;
1447         }
1448
1449         total = count_messages(&all_msgs);
1450         if (!total) {
1451                 fprintf(stderr, "no messages to send\n");
1452                 return 1;
1453         }
1454
1455         /* write it to the imap server */
1456         ctx = imap_open_store(&server);
1457         if (!ctx) {
1458                 fprintf(stderr, "failed to open store\n");
1459                 return 1;
1460         }
1461
1462         fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1463         ctx->name = imap_folder;
1464         while (1) {
1465                 unsigned percent = n * 100 / total;
1466                 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1467                 if (!split_msg(&all_msgs, &msg, &ofs))
1468                         break;
1469                 if (server.use_html)
1470                         wrap_in_html(&msg);
1471                 r = imap_store_msg(ctx, &msg);
1472                 if (r != DRV_OK)
1473                         break;
1474                 n++;
1475         }
1476         fprintf(stderr, "\n");
1477
1478         imap_close_store(ctx);
1479
1480         return 0;
1481 }