imap-send.con commit Merge branch 'maint' (6da14ee)
   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#ifdef NO_OPENSSL
  28typedef void *SSL;
  29#endif
  30
  31struct store_conf {
  32        char *name;
  33        const char *path; /* should this be here? its interpretation is driver-specific */
  34        char *map_inbox;
  35        char *trash;
  36        unsigned max_size; /* off_t is overkill */
  37        unsigned trash_remote_new:1, trash_only_new:1;
  38};
  39
  40struct string_list {
  41        struct string_list *next;
  42        char string[1];
  43};
  44
  45struct channel_conf {
  46        struct channel_conf *next;
  47        char *name;
  48        struct store_conf *master, *slave;
  49        char *master_name, *slave_name;
  50        char *sync_state;
  51        struct string_list *patterns;
  52        int mops, sops;
  53        unsigned max_messages; /* for slave only */
  54};
  55
  56struct group_conf {
  57        struct group_conf *next;
  58        char *name;
  59        struct string_list *channels;
  60};
  61
  62/* For message->status */
  63#define M_RECENT       (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
  64#define M_DEAD         (1<<1) /* expunged */
  65#define M_FLAGS        (1<<2) /* flags fetched */
  66
  67struct message {
  68        struct message *next;
  69        /* struct string_list *keywords; */
  70        size_t size; /* zero implies "not fetched" */
  71        int uid;
  72        unsigned char flags, status;
  73};
  74
  75struct store {
  76        struct store_conf *conf; /* foreign */
  77
  78        /* currently open mailbox */
  79        const char *name; /* foreign! maybe preset? */
  80        char *path; /* own */
  81        struct message *msgs; /* own */
  82        int uidvalidity;
  83        unsigned char opts; /* maybe preset? */
  84        /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
  85        int count; /* # of messages */
  86        int recent; /* # of recent messages - don't trust this beyond the initial read */
  87};
  88
  89struct msg_data {
  90        char *data;
  91        int len;
  92        unsigned char flags;
  93        unsigned int crlf:1;
  94};
  95
  96#define DRV_OK          0
  97#define DRV_MSG_BAD     -1
  98#define DRV_BOX_BAD     -2
  99#define DRV_STORE_BAD   -3
 100
 101static int Verbose, Quiet;
 102
 103static void imap_info(const char *, ...);
 104static void imap_warn(const char *, ...);
 105
 106static char *next_arg(char **);
 107
 108static void free_generic_messages(struct message *);
 109
 110static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
 111
 112static int nfvasprintf(char **strp, const char *fmt, va_list ap)
 113{
 114        int len;
 115        char tmp[8192];
 116
 117        len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
 118        if (len < 0)
 119                die("Fatal: Out of memory");
 120        if (len >= sizeof(tmp))
 121                die("imap command overflow!");
 122        *strp = xmemdupz(tmp, len);
 123        return len;
 124}
 125
 126static void arc4_init(void);
 127static unsigned char arc4_getbyte(void);
 128
 129struct imap_server_conf {
 130        char *name;
 131        char *tunnel;
 132        char *host;
 133        int port;
 134        char *user;
 135        char *pass;
 136        int use_ssl;
 137        int ssl_verify;
 138        int use_html;
 139};
 140
 141struct imap_store_conf {
 142        struct store_conf gen;
 143        struct imap_server_conf *server;
 144        unsigned use_namespace:1;
 145};
 146
 147#define NIL     (void *)0x1
 148#define LIST    (void *)0x2
 149
 150struct imap_list {
 151        struct imap_list *next, *child;
 152        char *val;
 153        int len;
 154};
 155
 156struct imap_socket {
 157        int fd;
 158        SSL *ssl;
 159};
 160
 161struct imap_buffer {
 162        struct imap_socket sock;
 163        int bytes;
 164        int offset;
 165        char buf[1024];
 166};
 167
 168struct imap_cmd;
 169
 170struct imap {
 171        int uidnext; /* from SELECT responses */
 172        struct imap_list *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
 173        unsigned caps, rcaps; /* CAPABILITY results */
 174        /* command queue */
 175        int nexttag, num_in_progress, literal_pending;
 176        struct imap_cmd *in_progress, **in_progress_append;
 177        struct imap_buffer buf; /* this is BIG, so put it last */
 178};
 179
 180struct imap_store {
 181        struct store gen;
 182        int uidvalidity;
 183        struct imap *imap;
 184        const char *prefix;
 185        unsigned /*currentnc:1,*/ trashnc:1;
 186};
 187
 188struct imap_cmd_cb {
 189        int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
 190        void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
 191        void *ctx;
 192        char *data;
 193        int dlen;
 194        int uid;
 195        unsigned create:1, trycreate:1;
 196};
 197
 198struct imap_cmd {
 199        struct imap_cmd *next;
 200        struct imap_cmd_cb cb;
 201        char *cmd;
 202        int tag;
 203};
 204
 205#define CAP(cap) (imap->caps & (1 << (cap)))
 206
 207enum CAPABILITY {
 208        NOLOGIN = 0,
 209        UIDPLUS,
 210        LITERALPLUS,
 211        NAMESPACE,
 212        STARTTLS,
 213};
 214
 215static const char *cap_list[] = {
 216        "LOGINDISABLED",
 217        "UIDPLUS",
 218        "LITERAL+",
 219        "NAMESPACE",
 220        "STARTTLS",
 221};
 222
 223#define RESP_OK    0
 224#define RESP_NO    1
 225#define RESP_BAD   2
 226
 227static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
 228
 229
 230static const char *Flags[] = {
 231        "Draft",
 232        "Flagged",
 233        "Answered",
 234        "Seen",
 235        "Deleted",
 236};
 237
 238#ifndef NO_OPENSSL
 239static void ssl_socket_perror(const char *func)
 240{
 241        fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), 0));
 242}
 243#endif
 244
 245static void socket_perror(const char *func, struct imap_socket *sock, int ret)
 246{
 247#ifndef NO_OPENSSL
 248        if (sock->ssl) {
 249                int sslerr = SSL_get_error(sock->ssl, ret);
 250                switch (sslerr) {
 251                case SSL_ERROR_NONE:
 252                        break;
 253                case SSL_ERROR_SYSCALL:
 254                        perror("SSL_connect");
 255                        break;
 256                default:
 257                        ssl_socket_perror("SSL_connect");
 258                        break;
 259                }
 260        } else
 261#endif
 262        {
 263                if (ret < 0)
 264                        perror(func);
 265                else
 266                        fprintf(stderr, "%s: unexpected EOF\n", func);
 267        }
 268}
 269
 270static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
 271{
 272#ifdef NO_OPENSSL
 273        fprintf(stderr, "SSL requested but SSL support not compiled in\n");
 274        return -1;
 275#else
 276        SSL_METHOD *meth;
 277        SSL_CTX *ctx;
 278        int ret;
 279
 280        SSL_library_init();
 281        SSL_load_error_strings();
 282
 283        if (use_tls_only)
 284                meth = TLSv1_method();
 285        else
 286                meth = SSLv23_method();
 287
 288        if (!meth) {
 289                ssl_socket_perror("SSLv23_method");
 290                return -1;
 291        }
 292
 293        ctx = SSL_CTX_new(meth);
 294
 295        if (verify)
 296                SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
 297
 298        if (!SSL_CTX_set_default_verify_paths(ctx)) {
 299                ssl_socket_perror("SSL_CTX_set_default_verify_paths");
 300                return -1;
 301        }
 302        sock->ssl = SSL_new(ctx);
 303        if (!sock->ssl) {
 304                ssl_socket_perror("SSL_new");
 305                return -1;
 306        }
 307        if (!SSL_set_fd(sock->ssl, sock->fd)) {
 308                ssl_socket_perror("SSL_set_fd");
 309                return -1;
 310        }
 311
 312        ret = SSL_connect(sock->ssl);
 313        if (ret <= 0) {
 314                socket_perror("SSL_connect", sock, ret);
 315                return -1;
 316        }
 317
 318        return 0;
 319#endif
 320}
 321
 322static int socket_read(struct imap_socket *sock, char *buf, int len)
 323{
 324        ssize_t n;
 325#ifndef NO_OPENSSL
 326        if (sock->ssl)
 327                n = SSL_read(sock->ssl, buf, len);
 328        else
 329#endif
 330                n = xread(sock->fd, buf, len);
 331        if (n <= 0) {
 332                socket_perror("read", sock, n);
 333                close(sock->fd);
 334                sock->fd = -1;
 335        }
 336        return n;
 337}
 338
 339static int socket_write(struct imap_socket *sock, const char *buf, int len)
 340{
 341        int n;
 342#ifndef NO_OPENSSL
 343        if (sock->ssl)
 344                n = SSL_write(sock->ssl, buf, len);
 345        else
 346#endif
 347                n = write_in_full(sock->fd, buf, len);
 348        if (n != len) {
 349                socket_perror("write", sock, n);
 350                close(sock->fd);
 351                sock->fd = -1;
 352        }
 353        return n;
 354}
 355
 356static void socket_shutdown(struct imap_socket *sock)
 357{
 358#ifndef NO_OPENSSL
 359        if (sock->ssl) {
 360                SSL_shutdown(sock->ssl);
 361                SSL_free(sock->ssl);
 362        }
 363#endif
 364        close(sock->fd);
 365}
 366
 367/* simple line buffering */
 368static int buffer_gets(struct imap_buffer *b, char **s)
 369{
 370        int n;
 371        int start = b->offset;
 372
 373        *s = b->buf + start;
 374
 375        for (;;) {
 376                /* make sure we have enough data to read the \r\n sequence */
 377                if (b->offset + 1 >= b->bytes) {
 378                        if (start) {
 379                                /* shift down used bytes */
 380                                *s = b->buf;
 381
 382                                assert(start <= b->bytes);
 383                                n = b->bytes - start;
 384
 385                                if (n)
 386                                        memmove(b->buf, b->buf + start, n);
 387                                b->offset -= start;
 388                                b->bytes = n;
 389                                start = 0;
 390                        }
 391
 392                        n = socket_read(&b->sock, b->buf + b->bytes,
 393                                         sizeof(b->buf) - b->bytes);
 394
 395                        if (n <= 0)
 396                                return -1;
 397
 398                        b->bytes += n;
 399                }
 400
 401                if (b->buf[b->offset] == '\r') {
 402                        assert(b->offset + 1 < b->bytes);
 403                        if (b->buf[b->offset + 1] == '\n') {
 404                                b->buf[b->offset] = 0;  /* terminate the string */
 405                                b->offset += 2; /* next line */
 406                                if (Verbose)
 407                                        puts(*s);
 408                                return 0;
 409                        }
 410                }
 411
 412                b->offset++;
 413        }
 414        /* not reached */
 415}
 416
 417static void imap_info(const char *msg, ...)
 418{
 419        va_list va;
 420
 421        if (!Quiet) {
 422                va_start(va, msg);
 423                vprintf(msg, va);
 424                va_end(va);
 425                fflush(stdout);
 426        }
 427}
 428
 429static void imap_warn(const char *msg, ...)
 430{
 431        va_list va;
 432
 433        if (Quiet < 2) {
 434                va_start(va, msg);
 435                vfprintf(stderr, msg, va);
 436                va_end(va);
 437        }
 438}
 439
 440static char *next_arg(char **s)
 441{
 442        char *ret;
 443
 444        if (!s || !*s)
 445                return NULL;
 446        while (isspace((unsigned char) **s))
 447                (*s)++;
 448        if (!**s) {
 449                *s = NULL;
 450                return NULL;
 451        }
 452        if (**s == '"') {
 453                ++*s;
 454                ret = *s;
 455                *s = strchr(*s, '"');
 456        } else {
 457                ret = *s;
 458                while (**s && !isspace((unsigned char) **s))
 459                        (*s)++;
 460        }
 461        if (*s) {
 462                if (**s)
 463                        *(*s)++ = 0;
 464                if (!**s)
 465                        *s = NULL;
 466        }
 467        return ret;
 468}
 469
 470static void free_generic_messages(struct message *msgs)
 471{
 472        struct message *tmsg;
 473
 474        for (; msgs; msgs = tmsg) {
 475                tmsg = msgs->next;
 476                free(msgs);
 477        }
 478}
 479
 480static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
 481{
 482        int ret;
 483        va_list va;
 484
 485        va_start(va, fmt);
 486        if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
 487                die("Fatal: buffer too small. Please report a bug.");
 488        va_end(va);
 489        return ret;
 490}
 491
 492static struct {
 493        unsigned char i, j, s[256];
 494} rs;
 495
 496static void arc4_init(void)
 497{
 498        int i, fd;
 499        unsigned char j, si, dat[128];
 500
 501        if ((fd = open("/dev/urandom", O_RDONLY)) < 0 && (fd = open("/dev/random", O_RDONLY)) < 0) {
 502                fprintf(stderr, "Fatal: no random number source available.\n");
 503                exit(3);
 504        }
 505        if (read_in_full(fd, dat, 128) != 128) {
 506                fprintf(stderr, "Fatal: cannot read random number source.\n");
 507                exit(3);
 508        }
 509        close(fd);
 510
 511        for (i = 0; i < 256; i++)
 512                rs.s[i] = i;
 513        for (i = j = 0; i < 256; i++) {
 514                si = rs.s[i];
 515                j += si + dat[i & 127];
 516                rs.s[i] = rs.s[j];
 517                rs.s[j] = si;
 518        }
 519        rs.i = rs.j = 0;
 520
 521        for (i = 0; i < 256; i++)
 522                arc4_getbyte();
 523}
 524
 525static unsigned char arc4_getbyte(void)
 526{
 527        unsigned char si, sj;
 528
 529        rs.i++;
 530        si = rs.s[rs.i];
 531        rs.j += si;
 532        sj = rs.s[rs.j];
 533        rs.s[rs.i] = sj;
 534        rs.s[rs.j] = si;
 535        return rs.s[(si + sj) & 0xff];
 536}
 537
 538static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
 539                                         struct imap_cmd_cb *cb,
 540                                         const char *fmt, va_list ap)
 541{
 542        struct imap *imap = ctx->imap;
 543        struct imap_cmd *cmd;
 544        int n, bufl;
 545        char buf[1024];
 546
 547        cmd = xmalloc(sizeof(struct imap_cmd));
 548        nfvasprintf(&cmd->cmd, fmt, ap);
 549        cmd->tag = ++imap->nexttag;
 550
 551        if (cb)
 552                cmd->cb = *cb;
 553        else
 554                memset(&cmd->cb, 0, sizeof(cmd->cb));
 555
 556        while (imap->literal_pending)
 557                get_cmd_result(ctx, NULL);
 558
 559        bufl = nfsnprintf(buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
 560                           "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
 561                           cmd->tag, cmd->cmd, cmd->cb.dlen);
 562        if (Verbose) {
 563                if (imap->num_in_progress)
 564                        printf("(%d in progress) ", imap->num_in_progress);
 565                if (memcmp(cmd->cmd, "LOGIN", 5))
 566                        printf(">>> %s", buf);
 567                else
 568                        printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
 569        }
 570        if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
 571                free(cmd->cmd);
 572                free(cmd);
 573                if (cb)
 574                        free(cb->data);
 575                return NULL;
 576        }
 577        if (cmd->cb.data) {
 578                if (CAP(LITERALPLUS)) {
 579                        n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
 580                        free(cmd->cb.data);
 581                        if (n != cmd->cb.dlen ||
 582                            socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
 583                                free(cmd->cmd);
 584                                free(cmd);
 585                                return NULL;
 586                        }
 587                        cmd->cb.data = NULL;
 588                } else
 589                        imap->literal_pending = 1;
 590        } else if (cmd->cb.cont)
 591                imap->literal_pending = 1;
 592        cmd->next = NULL;
 593        *imap->in_progress_append = cmd;
 594        imap->in_progress_append = &cmd->next;
 595        imap->num_in_progress++;
 596        return cmd;
 597}
 598
 599static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
 600                                       struct imap_cmd_cb *cb,
 601                                       const char *fmt, ...)
 602{
 603        struct imap_cmd *ret;
 604        va_list ap;
 605
 606        va_start(ap, fmt);
 607        ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
 608        va_end(ap);
 609        return ret;
 610}
 611
 612static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
 613                     const char *fmt, ...)
 614{
 615        va_list ap;
 616        struct imap_cmd *cmdp;
 617
 618        va_start(ap, fmt);
 619        cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 620        va_end(ap);
 621        if (!cmdp)
 622                return RESP_BAD;
 623
 624        return get_cmd_result(ctx, cmdp);
 625}
 626
 627static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
 628                       const char *fmt, ...)
 629{
 630        va_list ap;
 631        struct imap_cmd *cmdp;
 632
 633        va_start(ap, fmt);
 634        cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 635        va_end(ap);
 636        if (!cmdp)
 637                return DRV_STORE_BAD;
 638
 639        switch (get_cmd_result(ctx, cmdp)) {
 640        case RESP_BAD: return DRV_STORE_BAD;
 641        case RESP_NO: return DRV_MSG_BAD;
 642        default: return DRV_OK;
 643        }
 644}
 645
 646static int is_atom(struct imap_list *list)
 647{
 648        return list && list->val && list->val != NIL && list->val != LIST;
 649}
 650
 651static int is_list(struct imap_list *list)
 652{
 653        return list && list->val == LIST;
 654}
 655
 656static void free_list(struct imap_list *list)
 657{
 658        struct imap_list *tmp;
 659
 660        for (; list; list = tmp) {
 661                tmp = list->next;
 662                if (is_list(list))
 663                        free_list(list->child);
 664                else if (is_atom(list))
 665                        free(list->val);
 666                free(list);
 667        }
 668}
 669
 670static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
 671{
 672        struct imap_list *cur;
 673        char *s = *sp, *p;
 674        int n, bytes;
 675
 676        for (;;) {
 677                while (isspace((unsigned char)*s))
 678                        s++;
 679                if (level && *s == ')') {
 680                        s++;
 681                        break;
 682                }
 683                *curp = cur = xmalloc(sizeof(*cur));
 684                curp = &cur->next;
 685                cur->val = NULL; /* for clean bail */
 686                if (*s == '(') {
 687                        /* sublist */
 688                        s++;
 689                        cur->val = LIST;
 690                        if (parse_imap_list_l(imap, &s, &cur->child, level + 1))
 691                                goto bail;
 692                } else if (imap && *s == '{') {
 693                        /* literal */
 694                        bytes = cur->len = strtol(s + 1, &s, 10);
 695                        if (*s != '}')
 696                                goto bail;
 697
 698                        s = cur->val = xmalloc(cur->len);
 699
 700                        /* dump whats left over in the input buffer */
 701                        n = imap->buf.bytes - imap->buf.offset;
 702
 703                        if (n > bytes)
 704                                /* the entire message fit in the buffer */
 705                                n = bytes;
 706
 707                        memcpy(s, imap->buf.buf + imap->buf.offset, n);
 708                        s += n;
 709                        bytes -= n;
 710
 711                        /* mark that we used part of the buffer */
 712                        imap->buf.offset += n;
 713
 714                        /* now read the rest of the message */
 715                        while (bytes > 0) {
 716                                if ((n = socket_read(&imap->buf.sock, s, bytes)) <= 0)
 717                                        goto bail;
 718                                s += n;
 719                                bytes -= n;
 720                        }
 721
 722                        if (buffer_gets(&imap->buf, &s))
 723                                goto bail;
 724                } else if (*s == '"') {
 725                        /* quoted string */
 726                        s++;
 727                        p = s;
 728                        for (; *s != '"'; s++)
 729                                if (!*s)
 730                                        goto bail;
 731                        cur->len = s - p;
 732                        s++;
 733                        cur->val = xmemdupz(p, cur->len);
 734                } else {
 735                        /* atom */
 736                        p = s;
 737                        for (; *s && !isspace((unsigned char)*s); s++)
 738                                if (level && *s == ')')
 739                                        break;
 740                        cur->len = s - p;
 741                        if (cur->len == 3 && !memcmp("NIL", p, 3))
 742                                cur->val = NIL;
 743                        else
 744                                cur->val = xmemdupz(p, cur->len);
 745                }
 746
 747                if (!level)
 748                        break;
 749                if (!*s)
 750                        goto bail;
 751        }
 752        *sp = s;
 753        *curp = NULL;
 754        return 0;
 755
 756bail:
 757        *curp = NULL;
 758        return -1;
 759}
 760
 761static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
 762{
 763        struct imap_list *head;
 764
 765        if (!parse_imap_list_l(imap, sp, &head, 0))
 766                return head;
 767        free_list(head);
 768        return NULL;
 769}
 770
 771static struct imap_list *parse_list(char **sp)
 772{
 773        return parse_imap_list(NULL, sp);
 774}
 775
 776static void parse_capability(struct imap *imap, char *cmd)
 777{
 778        char *arg;
 779        unsigned i;
 780
 781        imap->caps = 0x80000000;
 782        while ((arg = next_arg(&cmd)))
 783                for (i = 0; i < ARRAY_SIZE(cap_list); i++)
 784                        if (!strcmp(cap_list[i], arg))
 785                                imap->caps |= 1 << i;
 786        imap->rcaps = imap->caps;
 787}
 788
 789static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
 790                               char *s)
 791{
 792        struct imap *imap = ctx->imap;
 793        char *arg, *p;
 794
 795        if (*s != '[')
 796                return RESP_OK;         /* no response code */
 797        s++;
 798        if (!(p = strchr(s, ']'))) {
 799                fprintf(stderr, "IMAP error: malformed response code\n");
 800                return RESP_BAD;
 801        }
 802        *p++ = 0;
 803        arg = next_arg(&s);
 804        if (!strcmp("UIDVALIDITY", arg)) {
 805                if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg))) {
 806                        fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
 807                        return RESP_BAD;
 808                }
 809        } else if (!strcmp("UIDNEXT", arg)) {
 810                if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
 811                        fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
 812                        return RESP_BAD;
 813                }
 814        } else if (!strcmp("CAPABILITY", arg)) {
 815                parse_capability(imap, s);
 816        } else if (!strcmp("ALERT", arg)) {
 817                /* RFC2060 says that these messages MUST be displayed
 818                 * to the user
 819                 */
 820                for (; isspace((unsigned char)*p); p++);
 821                fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
 822        } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
 823                if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg)) ||
 824                    !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
 825                        fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
 826                        return RESP_BAD;
 827                }
 828        }
 829        return RESP_OK;
 830}
 831
 832static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
 833{
 834        struct imap *imap = ctx->imap;
 835        struct imap_cmd *cmdp, **pcmdp, *ncmdp;
 836        char *cmd, *arg, *arg1, *p;
 837        int n, resp, resp2, tag;
 838
 839        for (;;) {
 840                if (buffer_gets(&imap->buf, &cmd))
 841                        return RESP_BAD;
 842
 843                arg = next_arg(&cmd);
 844                if (*arg == '*') {
 845                        arg = next_arg(&cmd);
 846                        if (!arg) {
 847                                fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 848                                return RESP_BAD;
 849                        }
 850
 851                        if (!strcmp("NAMESPACE", arg)) {
 852                                imap->ns_personal = parse_list(&cmd);
 853                                imap->ns_other = parse_list(&cmd);
 854                                imap->ns_shared = parse_list(&cmd);
 855                        } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
 856                                   !strcmp("NO", arg) || !strcmp("BYE", arg)) {
 857                                if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
 858                                        return resp;
 859                        } else if (!strcmp("CAPABILITY", arg))
 860                                parse_capability(imap, cmd);
 861                        else if ((arg1 = next_arg(&cmd))) {
 862                                if (!strcmp("EXISTS", arg1))
 863                                        ctx->gen.count = atoi(arg);
 864                                else if (!strcmp("RECENT", arg1))
 865                                        ctx->gen.recent = atoi(arg);
 866                        } else {
 867                                fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 868                                return RESP_BAD;
 869                        }
 870                } else if (!imap->in_progress) {
 871                        fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
 872                        return RESP_BAD;
 873                } else if (*arg == '+') {
 874                        /* This can happen only with the last command underway, as
 875                           it enforces a round-trip. */
 876                        cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
 877                               offsetof(struct imap_cmd, next));
 878                        if (cmdp->cb.data) {
 879                                n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
 880                                free(cmdp->cb.data);
 881                                cmdp->cb.data = NULL;
 882                                if (n != (int)cmdp->cb.dlen)
 883                                        return RESP_BAD;
 884                        } else if (cmdp->cb.cont) {
 885                                if (cmdp->cb.cont(ctx, cmdp, cmd))
 886                                        return RESP_BAD;
 887                        } else {
 888                                fprintf(stderr, "IMAP error: unexpected command continuation request\n");
 889                                return RESP_BAD;
 890                        }
 891                        if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
 892                                return RESP_BAD;
 893                        if (!cmdp->cb.cont)
 894                                imap->literal_pending = 0;
 895                        if (!tcmd)
 896                                return DRV_OK;
 897                } else {
 898                        tag = atoi(arg);
 899                        for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
 900                                if (cmdp->tag == tag)
 901                                        goto gottag;
 902                        fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
 903                        return RESP_BAD;
 904                gottag:
 905                        if (!(*pcmdp = cmdp->next))
 906                                imap->in_progress_append = pcmdp;
 907                        imap->num_in_progress--;
 908                        if (cmdp->cb.cont || cmdp->cb.data)
 909                                imap->literal_pending = 0;
 910                        arg = next_arg(&cmd);
 911                        if (!strcmp("OK", arg))
 912                                resp = DRV_OK;
 913                        else {
 914                                if (!strcmp("NO", arg)) {
 915                                        if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
 916                                                p = strchr(cmdp->cmd, '"');
 917                                                if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", strchr(p + 1, '"') - p + 1, p)) {
 918                                                        resp = RESP_BAD;
 919                                                        goto normal;
 920                                                }
 921                                                /* not waiting here violates the spec, but a server that does not
 922                                                   grok this nonetheless violates it too. */
 923                                                cmdp->cb.create = 0;
 924                                                if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
 925                                                        resp = RESP_BAD;
 926                                                        goto normal;
 927                                                }
 928                                                free(cmdp->cmd);
 929                                                free(cmdp);
 930                                                if (!tcmd)
 931                                                        return 0;       /* ignored */
 932                                                if (cmdp == tcmd)
 933                                                        tcmd = ncmdp;
 934                                                continue;
 935                                        }
 936                                        resp = RESP_NO;
 937                                } else /*if (!strcmp("BAD", arg))*/
 938                                        resp = RESP_BAD;
 939                                fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
 940                                         memcmp(cmdp->cmd, "LOGIN", 5) ?
 941                                                        cmdp->cmd : "LOGIN <user> <pass>",
 942                                                        arg, cmd ? cmd : "");
 943                        }
 944                        if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
 945                                resp = resp2;
 946                normal:
 947                        if (cmdp->cb.done)
 948                                cmdp->cb.done(ctx, cmdp, resp);
 949                        free(cmdp->cb.data);
 950                        free(cmdp->cmd);
 951                        free(cmdp);
 952                        if (!tcmd || tcmd == cmdp)
 953                                return resp;
 954                }
 955        }
 956        /* not reached */
 957}
 958
 959static void imap_close_server(struct imap_store *ictx)
 960{
 961        struct imap *imap = ictx->imap;
 962
 963        if (imap->buf.sock.fd != -1) {
 964                imap_exec(ictx, NULL, "LOGOUT");
 965                socket_shutdown(&imap->buf.sock);
 966        }
 967        free_list(imap->ns_personal);
 968        free_list(imap->ns_other);
 969        free_list(imap->ns_shared);
 970        free(imap);
 971}
 972
 973static void imap_close_store(struct store *ctx)
 974{
 975        imap_close_server((struct imap_store *)ctx);
 976        free_generic_messages(ctx->msgs);
 977        free(ctx);
 978}
 979
 980static struct store *imap_open_store(struct imap_server_conf *srvc)
 981{
 982        struct imap_store *ctx;
 983        struct imap *imap;
 984        char *arg, *rsp;
 985        struct hostent *he;
 986        struct sockaddr_in addr;
 987        int s, a[2], preauth;
 988        pid_t pid;
 989
 990        ctx = xcalloc(sizeof(*ctx), 1);
 991
 992        ctx->imap = imap = xcalloc(sizeof(*imap), 1);
 993        imap->buf.sock.fd = -1;
 994        imap->in_progress_append = &imap->in_progress;
 995
 996        /* open connection to IMAP server */
 997
 998        if (srvc->tunnel) {
 999                imap_info("Starting tunnel '%s'... ", srvc->tunnel);
1000
1001                if (socketpair(PF_UNIX, SOCK_STREAM, 0, a)) {
1002                        perror("socketpair");
1003                        exit(1);
1004                }
1005
1006                pid = fork();
1007                if (pid < 0)
1008                        _exit(127);
1009                if (!pid) {
1010                        if (dup2(a[0], 0) == -1 || dup2(a[0], 1) == -1)
1011                                _exit(127);
1012                        close(a[0]);
1013                        close(a[1]);
1014                        execl("/bin/sh", "sh", "-c", srvc->tunnel, NULL);
1015                        _exit(127);
1016                }
1017
1018                close(a[0]);
1019
1020                imap->buf.sock.fd = a[1];
1021
1022                imap_info("ok\n");
1023        } else {
1024                memset(&addr, 0, sizeof(addr));
1025                addr.sin_port = htons(srvc->port);
1026                addr.sin_family = AF_INET;
1027
1028                imap_info("Resolving %s... ", srvc->host);
1029                he = gethostbyname(srvc->host);
1030                if (!he) {
1031                        perror("gethostbyname");
1032                        goto bail;
1033                }
1034                imap_info("ok\n");
1035
1036                addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1037
1038                s = socket(PF_INET, SOCK_STREAM, 0);
1039
1040                imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1041                if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1042                        close(s);
1043                        perror("connect");
1044                        goto bail;
1045                }
1046
1047                imap->buf.sock.fd = s;
1048
1049                if (srvc->use_ssl &&
1050                    ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1051                        close(s);
1052                        goto bail;
1053                }
1054                imap_info("ok\n");
1055        }
1056
1057        /* read the greeting string */
1058        if (buffer_gets(&imap->buf, &rsp)) {
1059                fprintf(stderr, "IMAP error: no greeting response\n");
1060                goto bail;
1061        }
1062        arg = next_arg(&rsp);
1063        if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1064                fprintf(stderr, "IMAP error: invalid greeting response\n");
1065                goto bail;
1066        }
1067        preauth = 0;
1068        if (!strcmp("PREAUTH", arg))
1069                preauth = 1;
1070        else if (strcmp("OK", arg) != 0) {
1071                fprintf(stderr, "IMAP error: unknown greeting response\n");
1072                goto bail;
1073        }
1074        parse_response_code(ctx, NULL, rsp);
1075        if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1076                goto bail;
1077
1078        if (!preauth) {
1079#ifndef NO_OPENSSL
1080                if (!srvc->use_ssl && CAP(STARTTLS)) {
1081                        if (imap_exec(ctx, 0, "STARTTLS") != RESP_OK)
1082                                goto bail;
1083                        if (ssl_socket_connect(&imap->buf.sock, 1,
1084                                               srvc->ssl_verify))
1085                                goto bail;
1086                        /* capabilities may have changed, so get the new capabilities */
1087                        if (imap_exec(ctx, 0, "CAPABILITY") != RESP_OK)
1088                                goto bail;
1089                }
1090#endif
1091                imap_info("Logging in...\n");
1092                if (!srvc->user) {
1093                        fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
1094                        goto bail;
1095                }
1096                if (!srvc->pass) {
1097                        char prompt[80];
1098                        sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host);
1099                        arg = getpass(prompt);
1100                        if (!arg) {
1101                                perror("getpass");
1102                                exit(1);
1103                        }
1104                        if (!*arg) {
1105                                fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
1106                                goto bail;
1107                        }
1108                        /*
1109                         * getpass() returns a pointer to a static buffer.  make a copy
1110                         * for long term storage.
1111                         */
1112                        srvc->pass = xstrdup(arg);
1113                }
1114                if (CAP(NOLOGIN)) {
1115                        fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1116                        goto bail;
1117                }
1118                if (!imap->buf.sock.ssl)
1119                        imap_warn("*** IMAP Warning *** Password is being "
1120                                  "sent in the clear\n");
1121                if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1122                        fprintf(stderr, "IMAP error: LOGIN failed\n");
1123                        goto bail;
1124                }
1125        } /* !preauth */
1126
1127        ctx->prefix = "";
1128        ctx->trashnc = 1;
1129        return (struct store *)ctx;
1130
1131bail:
1132        imap_close_store(&ctx->gen);
1133        return NULL;
1134}
1135
1136static int imap_make_flags(int flags, char *buf)
1137{
1138        const char *s;
1139        unsigned i, d;
1140
1141        for (i = d = 0; i < ARRAY_SIZE(Flags); i++)
1142                if (flags & (1 << i)) {
1143                        buf[d++] = ' ';
1144                        buf[d++] = '\\';
1145                        for (s = Flags[i]; *s; s++)
1146                                buf[d++] = *s;
1147                }
1148        buf[0] = '(';
1149        buf[d++] = ')';
1150        return d;
1151}
1152
1153#define TUIDL 8
1154
1155static int imap_store_msg(struct store *gctx, struct msg_data *data, int *uid)
1156{
1157        struct imap_store *ctx = (struct imap_store *)gctx;
1158        struct imap *imap = ctx->imap;
1159        struct imap_cmd_cb cb;
1160        char *fmap, *buf;
1161        const char *prefix, *box;
1162        int ret, i, j, d, len, extra, nocr;
1163        int start, sbreak = 0, ebreak = 0;
1164        char flagstr[128], tuid[TUIDL * 2 + 1];
1165
1166        memset(&cb, 0, sizeof(cb));
1167
1168        fmap = data->data;
1169        len = data->len;
1170        nocr = !data->crlf;
1171        extra = 0, i = 0;
1172        if (!CAP(UIDPLUS) && uid) {
1173        nloop:
1174                start = i;
1175                while (i < len)
1176                        if (fmap[i++] == '\n') {
1177                                extra += nocr;
1178                                if (i - 2 + nocr == start) {
1179                                        sbreak = ebreak = i - 2 + nocr;
1180                                        goto mktid;
1181                                }
1182                                if (!memcmp(fmap + start, "X-TUID: ", 8)) {
1183                                        extra -= (ebreak = i) - (sbreak = start) + nocr;
1184                                        goto mktid;
1185                                }
1186                                goto nloop;
1187                        }
1188                /* invalid message */
1189                free(fmap);
1190                return DRV_MSG_BAD;
1191        mktid:
1192                for (j = 0; j < TUIDL; j++)
1193                        sprintf(tuid + j * 2, "%02x", arc4_getbyte());
1194                extra += 8 + TUIDL * 2 + 2;
1195        }
1196        if (nocr)
1197                for (; i < len; i++)
1198                        if (fmap[i] == '\n')
1199                                extra++;
1200
1201        cb.dlen = len + extra;
1202        buf = cb.data = xmalloc(cb.dlen);
1203        i = 0;
1204        if (!CAP(UIDPLUS) && uid) {
1205                if (nocr) {
1206                        for (; i < sbreak; i++)
1207                                if (fmap[i] == '\n') {
1208                                        *buf++ = '\r';
1209                                        *buf++ = '\n';
1210                                } else
1211                                        *buf++ = fmap[i];
1212                } else {
1213                        memcpy(buf, fmap, sbreak);
1214                        buf += sbreak;
1215                }
1216                memcpy(buf, "X-TUID: ", 8);
1217                buf += 8;
1218                memcpy(buf, tuid, TUIDL * 2);
1219                buf += TUIDL * 2;
1220                *buf++ = '\r';
1221                *buf++ = '\n';
1222                i = ebreak;
1223        }
1224        if (nocr) {
1225                for (; i < len; i++)
1226                        if (fmap[i] == '\n') {
1227                                *buf++ = '\r';
1228                                *buf++ = '\n';
1229                        } else
1230                                *buf++ = fmap[i];
1231        } else
1232                memcpy(buf, fmap + i, len - i);
1233
1234        free(fmap);
1235
1236        d = 0;
1237        if (data->flags) {
1238                d = imap_make_flags(data->flags, flagstr);
1239                flagstr[d++] = ' ';
1240        }
1241        flagstr[d] = 0;
1242
1243        if (!uid) {
1244                box = gctx->conf->trash;
1245                prefix = ctx->prefix;
1246                cb.create = 1;
1247                if (ctx->trashnc)
1248                        imap->caps = imap->rcaps & ~(1 << LITERALPLUS);
1249        } else {
1250                box = gctx->name;
1251                prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1252                cb.create = 0;
1253        }
1254        cb.ctx = uid;
1255        ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
1256        imap->caps = imap->rcaps;
1257        if (ret != DRV_OK)
1258                return ret;
1259        if (!uid)
1260                ctx->trashnc = 0;
1261        else
1262                gctx->count++;
1263
1264        return DRV_OK;
1265}
1266
1267static void encode_html_chars(struct strbuf *p)
1268{
1269        int i;
1270        for (i = 0; i < p->len; i++) {
1271                if (p->buf[i] == '&')
1272                        strbuf_splice(p, i, 1, "&amp;", 5);
1273                if (p->buf[i] == '<')
1274                        strbuf_splice(p, i, 1, "&lt;", 4);
1275                if (p->buf[i] == '>')
1276                        strbuf_splice(p, i, 1, "&gt;", 4);
1277                if (p->buf[i] == '"')
1278                        strbuf_splice(p, i, 1, "&quot;", 6);
1279        }
1280}
1281static void wrap_in_html(struct msg_data *msg)
1282{
1283        struct strbuf buf = STRBUF_INIT;
1284        struct strbuf **lines;
1285        struct strbuf **p;
1286        static char *content_type = "Content-Type: text/html;\n";
1287        static char *pre_open = "<pre>\n";
1288        static char *pre_close = "</pre>\n";
1289        int added_header = 0;
1290
1291        strbuf_attach(&buf, msg->data, msg->len, msg->len);
1292        lines = strbuf_split(&buf, '\n');
1293        strbuf_release(&buf);
1294        for (p = lines; *p; p++) {
1295                if (! added_header) {
1296                        if ((*p)->len == 1 && *((*p)->buf) == '\n') {
1297                                strbuf_addstr(&buf, content_type);
1298                                strbuf_addbuf(&buf, *p);
1299                                strbuf_addstr(&buf, pre_open);
1300                                added_header = 1;
1301                                continue;
1302                        }
1303                }
1304                else
1305                        encode_html_chars(*p);
1306                strbuf_addbuf(&buf, *p);
1307        }
1308        strbuf_addstr(&buf, pre_close);
1309        strbuf_list_free(lines);
1310        msg->len  = buf.len;
1311        msg->data = strbuf_detach(&buf, NULL);
1312}
1313
1314#define CHUNKSIZE 0x1000
1315
1316static int read_message(FILE *f, struct msg_data *msg)
1317{
1318        struct strbuf buf = STRBUF_INIT;
1319
1320        memset(msg, 0, sizeof(*msg));
1321
1322        do {
1323                if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
1324                        break;
1325        } while (!feof(f));
1326
1327        msg->len  = buf.len;
1328        msg->data = strbuf_detach(&buf, NULL);
1329        return msg->len;
1330}
1331
1332static int count_messages(struct msg_data *msg)
1333{
1334        int count = 0;
1335        char *p = msg->data;
1336
1337        while (1) {
1338                if (!prefixcmp(p, "From ")) {
1339                        count++;
1340                        p += 5;
1341                }
1342                p = strstr(p+5, "\nFrom ");
1343                if (!p)
1344                        break;
1345                p++;
1346        }
1347        return count;
1348}
1349
1350static int split_msg(struct msg_data *all_msgs, struct msg_data *msg, int *ofs)
1351{
1352        char *p, *data;
1353
1354        memset(msg, 0, sizeof *msg);
1355        if (*ofs >= all_msgs->len)
1356                return 0;
1357
1358        data = &all_msgs->data[*ofs];
1359        msg->len = all_msgs->len - *ofs;
1360
1361        if (msg->len < 5 || prefixcmp(data, "From "))
1362                return 0;
1363
1364        p = strchr(data, '\n');
1365        if (p) {
1366                p = &p[1];
1367                msg->len -= p-data;
1368                *ofs += p-data;
1369                data = p;
1370        }
1371
1372        p = strstr(data, "\nFrom ");
1373        if (p)
1374                msg->len = &p[1] - data;
1375
1376        msg->data = xmemdupz(data, msg->len);
1377        *ofs += msg->len;
1378        return 1;
1379}
1380
1381static struct imap_server_conf server = {
1382        NULL,   /* name */
1383        NULL,   /* tunnel */
1384        NULL,   /* host */
1385        0,      /* port */
1386        NULL,   /* user */
1387        NULL,   /* pass */
1388        0,      /* use_ssl */
1389        1,      /* ssl_verify */
1390        0,      /* use_html */
1391};
1392
1393static char *imap_folder;
1394
1395static int git_imap_config(const char *key, const char *val, void *cb)
1396{
1397        char imap_key[] = "imap.";
1398
1399        if (strncmp(key, imap_key, sizeof imap_key - 1))
1400                return 0;
1401
1402        if (!val)
1403                return config_error_nonbool(key);
1404
1405        key += sizeof imap_key - 1;
1406
1407        if (!strcmp("folder", key)) {
1408                imap_folder = xstrdup(val);
1409        } else if (!strcmp("host", key)) {
1410                if (!prefixcmp(val, "imap:"))
1411                        val += 5;
1412                else if (!prefixcmp(val, "imaps:")) {
1413                        val += 6;
1414                        server.use_ssl = 1;
1415                }
1416                if (!prefixcmp(val, "//"))
1417                        val += 2;
1418                server.host = xstrdup(val);
1419        } else if (!strcmp("user", key))
1420                server.user = xstrdup(val);
1421        else if (!strcmp("pass", key))
1422                server.pass = xstrdup(val);
1423        else if (!strcmp("port", key))
1424                server.port = git_config_int(key, val);
1425        else if (!strcmp("tunnel", key))
1426                server.tunnel = xstrdup(val);
1427        else if (!strcmp("sslverify", key))
1428                server.ssl_verify = git_config_bool(key, val);
1429        else if (!strcmp("preformattedHTML", key))
1430                server.use_html = git_config_bool(key, val);
1431        return 0;
1432}
1433
1434int main(int argc, char **argv)
1435{
1436        struct msg_data all_msgs, msg;
1437        struct store *ctx = NULL;
1438        int uid = 0;
1439        int ofs = 0;
1440        int r;
1441        int total, n = 0;
1442        int nongit_ok;
1443
1444        git_extract_argv0_path(argv[0]);
1445
1446        /* init the random number generator */
1447        arc4_init();
1448
1449        setup_git_directory_gently(&nongit_ok);
1450        git_config(git_imap_config, NULL);
1451
1452        if (!server.port)
1453                server.port = server.use_ssl ? 993 : 143;
1454
1455        if (!imap_folder) {
1456                fprintf(stderr, "no imap store specified\n");
1457                return 1;
1458        }
1459        if (!server.host) {
1460                if (!server.tunnel) {
1461                        fprintf(stderr, "no imap host specified\n");
1462                        return 1;
1463                }
1464                server.host = "tunnel";
1465        }
1466
1467        /* read the messages */
1468        if (!read_message(stdin, &all_msgs)) {
1469                fprintf(stderr, "nothing to send\n");
1470                return 1;
1471        }
1472
1473        total = count_messages(&all_msgs);
1474        if (!total) {
1475                fprintf(stderr, "no messages to send\n");
1476                return 1;
1477        }
1478
1479        /* write it to the imap server */
1480        ctx = imap_open_store(&server);
1481        if (!ctx) {
1482                fprintf(stderr, "failed to open store\n");
1483                return 1;
1484        }
1485
1486        fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1487        ctx->name = imap_folder;
1488        while (1) {
1489                unsigned percent = n * 100 / total;
1490                fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1491                if (!split_msg(&all_msgs, &msg, &ofs))
1492                        break;
1493                if (server.use_html)
1494                        wrap_in_html(&msg);
1495                r = imap_store_msg(ctx, &msg, &uid);
1496                if (r != DRV_OK)
1497                        break;
1498                n++;
1499        }
1500        fprintf(stderr, "\n");
1501
1502        imap_close_store(ctx);
1503
1504        return 0;
1505}