29c10a417c0dd5f71340728dfade4e3bda7b93a3
   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#include "prompt.h"
  29#ifdef NO_OPENSSL
  30typedef void *SSL;
  31#else
  32#include <openssl/evp.h>
  33#include <openssl/hmac.h>
  34#endif
  35
  36struct store_conf {
  37        char *name;
  38        const char *path; /* should this be here? its interpretation is driver-specific */
  39        char *map_inbox;
  40        char *trash;
  41        unsigned max_size; /* off_t is overkill */
  42        unsigned trash_remote_new:1, trash_only_new:1;
  43};
  44
  45/* For message->status */
  46#define M_RECENT       (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
  47#define M_DEAD         (1<<1) /* expunged */
  48#define M_FLAGS        (1<<2) /* flags fetched */
  49
  50struct message {
  51        struct message *next;
  52        size_t size; /* zero implies "not fetched" */
  53        int uid;
  54        unsigned char flags, status;
  55};
  56
  57struct store {
  58        struct store_conf *conf; /* foreign */
  59
  60        /* currently open mailbox */
  61        const char *name; /* foreign! maybe preset? */
  62        char *path; /* own */
  63        struct message *msgs; /* own */
  64        int uidvalidity;
  65        unsigned char opts; /* maybe preset? */
  66        /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
  67        int count; /* # of messages */
  68        int recent; /* # of recent messages - don't trust this beyond the initial read */
  69};
  70
  71static const char imap_send_usage[] = "git imap-send < <mbox>";
  72
  73#undef DRV_OK
  74#define DRV_OK          0
  75#define DRV_MSG_BAD     -1
  76#define DRV_BOX_BAD     -2
  77#define DRV_STORE_BAD   -3
  78
  79static int Verbose, Quiet;
  80
  81__attribute__((format (printf, 1, 2)))
  82static void imap_info(const char *, ...);
  83__attribute__((format (printf, 1, 2)))
  84static void imap_warn(const char *, ...);
  85
  86static char *next_arg(char **);
  87
  88static void free_generic_messages(struct message *);
  89
  90__attribute__((format (printf, 3, 4)))
  91static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
  92
  93static int nfvasprintf(char **strp, const char *fmt, va_list ap)
  94{
  95        int len;
  96        char tmp[8192];
  97
  98        len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
  99        if (len < 0)
 100                die("Fatal: Out of memory");
 101        if (len >= sizeof(tmp))
 102                die("imap command overflow!");
 103        *strp = xmemdupz(tmp, len);
 104        return len;
 105}
 106
 107struct imap_server_conf {
 108        char *name;
 109        char *tunnel;
 110        char *host;
 111        int port;
 112        char *user;
 113        char *pass;
 114        int use_ssl;
 115        int ssl_verify;
 116        int use_html;
 117        char *auth_method;
 118};
 119
 120static struct imap_server_conf server = {
 121        NULL,   /* name */
 122        NULL,   /* tunnel */
 123        NULL,   /* host */
 124        0,      /* port */
 125        NULL,   /* user */
 126        NULL,   /* pass */
 127        0,      /* use_ssl */
 128        1,      /* ssl_verify */
 129        0,      /* use_html */
 130        NULL,   /* auth_method */
 131};
 132
 133struct imap_store_conf {
 134        struct store_conf gen;
 135        struct imap_server_conf *server;
 136};
 137
 138#define NIL     (void *)0x1
 139#define LIST    (void *)0x2
 140
 141struct imap_list {
 142        struct imap_list *next, *child;
 143        char *val;
 144        int len;
 145};
 146
 147struct imap_socket {
 148        int fd[2];
 149        SSL *ssl;
 150};
 151
 152struct imap_buffer {
 153        struct imap_socket sock;
 154        int bytes;
 155        int offset;
 156        char buf[1024];
 157};
 158
 159struct imap_cmd;
 160
 161struct imap {
 162        int uidnext; /* from SELECT responses */
 163        struct imap_list *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
 164        unsigned caps, rcaps; /* CAPABILITY results */
 165        /* command queue */
 166        int nexttag, num_in_progress, literal_pending;
 167        struct imap_cmd *in_progress, **in_progress_append;
 168        struct imap_buffer buf; /* this is BIG, so put it last */
 169};
 170
 171struct imap_store {
 172        struct store gen;
 173        int uidvalidity;
 174        struct imap *imap;
 175        const char *prefix;
 176        unsigned /*currentnc:1,*/ trashnc:1;
 177};
 178
 179struct imap_cmd_cb {
 180        int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
 181        void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
 182        void *ctx;
 183        char *data;
 184        int dlen;
 185        int uid;
 186        unsigned create:1, trycreate:1;
 187};
 188
 189struct imap_cmd {
 190        struct imap_cmd *next;
 191        struct imap_cmd_cb cb;
 192        char *cmd;
 193        int tag;
 194};
 195
 196#define CAP(cap) (imap->caps & (1 << (cap)))
 197
 198enum CAPABILITY {
 199        NOLOGIN = 0,
 200        UIDPLUS,
 201        LITERALPLUS,
 202        NAMESPACE,
 203        STARTTLS,
 204        AUTH_CRAM_MD5
 205};
 206
 207static const char *cap_list[] = {
 208        "LOGINDISABLED",
 209        "UIDPLUS",
 210        "LITERAL+",
 211        "NAMESPACE",
 212        "STARTTLS",
 213        "AUTH=CRAM-MD5",
 214};
 215
 216#define RESP_OK    0
 217#define RESP_NO    1
 218#define RESP_BAD   2
 219
 220static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
 221
 222
 223#ifndef NO_OPENSSL
 224static void ssl_socket_perror(const char *func)
 225{
 226        fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
 227}
 228#endif
 229
 230static void socket_perror(const char *func, struct imap_socket *sock, int ret)
 231{
 232#ifndef NO_OPENSSL
 233        if (sock->ssl) {
 234                int sslerr = SSL_get_error(sock->ssl, ret);
 235                switch (sslerr) {
 236                case SSL_ERROR_NONE:
 237                        break;
 238                case SSL_ERROR_SYSCALL:
 239                        perror("SSL_connect");
 240                        break;
 241                default:
 242                        ssl_socket_perror("SSL_connect");
 243                        break;
 244                }
 245        } else
 246#endif
 247        {
 248                if (ret < 0)
 249                        perror(func);
 250                else
 251                        fprintf(stderr, "%s: unexpected EOF\n", func);
 252        }
 253}
 254
 255static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
 256{
 257#ifdef NO_OPENSSL
 258        fprintf(stderr, "SSL requested but SSL support not compiled in\n");
 259        return -1;
 260#else
 261#if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
 262        const SSL_METHOD *meth;
 263#else
 264        SSL_METHOD *meth;
 265#endif
 266        SSL_CTX *ctx;
 267        int ret;
 268
 269        SSL_library_init();
 270        SSL_load_error_strings();
 271
 272        if (use_tls_only)
 273                meth = TLSv1_method();
 274        else
 275                meth = SSLv23_method();
 276
 277        if (!meth) {
 278                ssl_socket_perror("SSLv23_method");
 279                return -1;
 280        }
 281
 282        ctx = SSL_CTX_new(meth);
 283
 284        if (verify)
 285                SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
 286
 287        if (!SSL_CTX_set_default_verify_paths(ctx)) {
 288                ssl_socket_perror("SSL_CTX_set_default_verify_paths");
 289                return -1;
 290        }
 291        sock->ssl = SSL_new(ctx);
 292        if (!sock->ssl) {
 293                ssl_socket_perror("SSL_new");
 294                return -1;
 295        }
 296        if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
 297                ssl_socket_perror("SSL_set_rfd");
 298                return -1;
 299        }
 300        if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
 301                ssl_socket_perror("SSL_set_wfd");
 302                return -1;
 303        }
 304
 305        ret = SSL_connect(sock->ssl);
 306        if (ret <= 0) {
 307                socket_perror("SSL_connect", sock, ret);
 308                return -1;
 309        }
 310
 311        return 0;
 312#endif
 313}
 314
 315static int socket_read(struct imap_socket *sock, char *buf, int len)
 316{
 317        ssize_t n;
 318#ifndef NO_OPENSSL
 319        if (sock->ssl)
 320                n = SSL_read(sock->ssl, buf, len);
 321        else
 322#endif
 323                n = xread(sock->fd[0], buf, len);
 324        if (n <= 0) {
 325                socket_perror("read", sock, n);
 326                close(sock->fd[0]);
 327                close(sock->fd[1]);
 328                sock->fd[0] = sock->fd[1] = -1;
 329        }
 330        return n;
 331}
 332
 333static int socket_write(struct imap_socket *sock, const char *buf, int len)
 334{
 335        int n;
 336#ifndef NO_OPENSSL
 337        if (sock->ssl)
 338                n = SSL_write(sock->ssl, buf, len);
 339        else
 340#endif
 341                n = write_in_full(sock->fd[1], buf, len);
 342        if (n != len) {
 343                socket_perror("write", 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
 351static void socket_shutdown(struct imap_socket *sock)
 352{
 353#ifndef NO_OPENSSL
 354        if (sock->ssl) {
 355                SSL_shutdown(sock->ssl);
 356                SSL_free(sock->ssl);
 357        }
 358#endif
 359        close(sock->fd[0]);
 360        close(sock->fd[1]);
 361}
 362
 363/* simple line buffering */
 364static int buffer_gets(struct imap_buffer *b, char **s)
 365{
 366        int n;
 367        int start = b->offset;
 368
 369        *s = b->buf + start;
 370
 371        for (;;) {
 372                /* make sure we have enough data to read the \r\n sequence */
 373                if (b->offset + 1 >= b->bytes) {
 374                        if (start) {
 375                                /* shift down used bytes */
 376                                *s = b->buf;
 377
 378                                assert(start <= b->bytes);
 379                                n = b->bytes - start;
 380
 381                                if (n)
 382                                        memmove(b->buf, b->buf + start, n);
 383                                b->offset -= start;
 384                                b->bytes = n;
 385                                start = 0;
 386                        }
 387
 388                        n = socket_read(&b->sock, b->buf + b->bytes,
 389                                         sizeof(b->buf) - b->bytes);
 390
 391                        if (n <= 0)
 392                                return -1;
 393
 394                        b->bytes += n;
 395                }
 396
 397                if (b->buf[b->offset] == '\r') {
 398                        assert(b->offset + 1 < b->bytes);
 399                        if (b->buf[b->offset + 1] == '\n') {
 400                                b->buf[b->offset] = 0;  /* terminate the string */
 401                                b->offset += 2; /* next line */
 402                                if (Verbose)
 403                                        puts(*s);
 404                                return 0;
 405                        }
 406                }
 407
 408                b->offset++;
 409        }
 410        /* not reached */
 411}
 412
 413static void imap_info(const char *msg, ...)
 414{
 415        va_list va;
 416
 417        if (!Quiet) {
 418                va_start(va, msg);
 419                vprintf(msg, va);
 420                va_end(va);
 421                fflush(stdout);
 422        }
 423}
 424
 425static void imap_warn(const char *msg, ...)
 426{
 427        va_list va;
 428
 429        if (Quiet < 2) {
 430                va_start(va, msg);
 431                vfprintf(stderr, msg, va);
 432                va_end(va);
 433        }
 434}
 435
 436static char *next_arg(char **s)
 437{
 438        char *ret;
 439
 440        if (!s || !*s)
 441                return NULL;
 442        while (isspace((unsigned char) **s))
 443                (*s)++;
 444        if (!**s) {
 445                *s = NULL;
 446                return NULL;
 447        }
 448        if (**s == '"') {
 449                ++*s;
 450                ret = *s;
 451                *s = strchr(*s, '"');
 452        } else {
 453                ret = *s;
 454                while (**s && !isspace((unsigned char) **s))
 455                        (*s)++;
 456        }
 457        if (*s) {
 458                if (**s)
 459                        *(*s)++ = 0;
 460                if (!**s)
 461                        *s = NULL;
 462        }
 463        return ret;
 464}
 465
 466static void free_generic_messages(struct message *msgs)
 467{
 468        struct message *tmsg;
 469
 470        for (; msgs; msgs = tmsg) {
 471                tmsg = msgs->next;
 472                free(msgs);
 473        }
 474}
 475
 476static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
 477{
 478        int ret;
 479        va_list va;
 480
 481        va_start(va, fmt);
 482        if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
 483                die("Fatal: buffer too small. Please report a bug.");
 484        va_end(va);
 485        return ret;
 486}
 487
 488static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
 489                                         struct imap_cmd_cb *cb,
 490                                         const char *fmt, va_list ap)
 491{
 492        struct imap *imap = ctx->imap;
 493        struct imap_cmd *cmd;
 494        int n, bufl;
 495        char buf[1024];
 496
 497        cmd = xmalloc(sizeof(struct imap_cmd));
 498        nfvasprintf(&cmd->cmd, fmt, ap);
 499        cmd->tag = ++imap->nexttag;
 500
 501        if (cb)
 502                cmd->cb = *cb;
 503        else
 504                memset(&cmd->cb, 0, sizeof(cmd->cb));
 505
 506        while (imap->literal_pending)
 507                get_cmd_result(ctx, NULL);
 508
 509        if (!cmd->cb.data)
 510                bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
 511        else
 512                bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
 513                                  cmd->tag, cmd->cmd, cmd->cb.dlen,
 514                                  CAP(LITERALPLUS) ? "+" : "");
 515
 516        if (Verbose) {
 517                if (imap->num_in_progress)
 518                        printf("(%d in progress) ", imap->num_in_progress);
 519                if (memcmp(cmd->cmd, "LOGIN", 5))
 520                        printf(">>> %s", buf);
 521                else
 522                        printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
 523        }
 524        if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
 525                free(cmd->cmd);
 526                free(cmd);
 527                if (cb)
 528                        free(cb->data);
 529                return NULL;
 530        }
 531        if (cmd->cb.data) {
 532                if (CAP(LITERALPLUS)) {
 533                        n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
 534                        free(cmd->cb.data);
 535                        if (n != cmd->cb.dlen ||
 536                            socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
 537                                free(cmd->cmd);
 538                                free(cmd);
 539                                return NULL;
 540                        }
 541                        cmd->cb.data = NULL;
 542                } else
 543                        imap->literal_pending = 1;
 544        } else if (cmd->cb.cont)
 545                imap->literal_pending = 1;
 546        cmd->next = NULL;
 547        *imap->in_progress_append = cmd;
 548        imap->in_progress_append = &cmd->next;
 549        imap->num_in_progress++;
 550        return cmd;
 551}
 552
 553__attribute__((format (printf, 3, 4)))
 554static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
 555                                       struct imap_cmd_cb *cb,
 556                                       const char *fmt, ...)
 557{
 558        struct imap_cmd *ret;
 559        va_list ap;
 560
 561        va_start(ap, fmt);
 562        ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
 563        va_end(ap);
 564        return ret;
 565}
 566
 567__attribute__((format (printf, 3, 4)))
 568static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
 569                     const char *fmt, ...)
 570{
 571        va_list ap;
 572        struct imap_cmd *cmdp;
 573
 574        va_start(ap, fmt);
 575        cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 576        va_end(ap);
 577        if (!cmdp)
 578                return RESP_BAD;
 579
 580        return get_cmd_result(ctx, cmdp);
 581}
 582
 583__attribute__((format (printf, 3, 4)))
 584static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
 585                       const char *fmt, ...)
 586{
 587        va_list ap;
 588        struct imap_cmd *cmdp;
 589
 590        va_start(ap, fmt);
 591        cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
 592        va_end(ap);
 593        if (!cmdp)
 594                return DRV_STORE_BAD;
 595
 596        switch (get_cmd_result(ctx, cmdp)) {
 597        case RESP_BAD: return DRV_STORE_BAD;
 598        case RESP_NO: return DRV_MSG_BAD;
 599        default: return DRV_OK;
 600        }
 601}
 602
 603static int is_atom(struct imap_list *list)
 604{
 605        return list && list->val && list->val != NIL && list->val != LIST;
 606}
 607
 608static int is_list(struct imap_list *list)
 609{
 610        return list && list->val == LIST;
 611}
 612
 613static void free_list(struct imap_list *list)
 614{
 615        struct imap_list *tmp;
 616
 617        for (; list; list = tmp) {
 618                tmp = list->next;
 619                if (is_list(list))
 620                        free_list(list->child);
 621                else if (is_atom(list))
 622                        free(list->val);
 623                free(list);
 624        }
 625}
 626
 627static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
 628{
 629        struct imap_list *cur;
 630        char *s = *sp, *p;
 631        int n, bytes;
 632
 633        for (;;) {
 634                while (isspace((unsigned char)*s))
 635                        s++;
 636                if (level && *s == ')') {
 637                        s++;
 638                        break;
 639                }
 640                *curp = cur = xmalloc(sizeof(*cur));
 641                curp = &cur->next;
 642                cur->val = NULL; /* for clean bail */
 643                if (*s == '(') {
 644                        /* sublist */
 645                        s++;
 646                        cur->val = LIST;
 647                        if (parse_imap_list_l(imap, &s, &cur->child, level + 1))
 648                                goto bail;
 649                } else if (imap && *s == '{') {
 650                        /* literal */
 651                        bytes = cur->len = strtol(s + 1, &s, 10);
 652                        if (*s != '}')
 653                                goto bail;
 654
 655                        s = cur->val = xmalloc(cur->len);
 656
 657                        /* dump whats left over in the input buffer */
 658                        n = imap->buf.bytes - imap->buf.offset;
 659
 660                        if (n > bytes)
 661                                /* the entire message fit in the buffer */
 662                                n = bytes;
 663
 664                        memcpy(s, imap->buf.buf + imap->buf.offset, n);
 665                        s += n;
 666                        bytes -= n;
 667
 668                        /* mark that we used part of the buffer */
 669                        imap->buf.offset += n;
 670
 671                        /* now read the rest of the message */
 672                        while (bytes > 0) {
 673                                if ((n = socket_read(&imap->buf.sock, s, bytes)) <= 0)
 674                                        goto bail;
 675                                s += n;
 676                                bytes -= n;
 677                        }
 678
 679                        if (buffer_gets(&imap->buf, &s))
 680                                goto bail;
 681                } else if (*s == '"') {
 682                        /* quoted string */
 683                        s++;
 684                        p = s;
 685                        for (; *s != '"'; s++)
 686                                if (!*s)
 687                                        goto bail;
 688                        cur->len = s - p;
 689                        s++;
 690                        cur->val = xmemdupz(p, cur->len);
 691                } else {
 692                        /* atom */
 693                        p = s;
 694                        for (; *s && !isspace((unsigned char)*s); s++)
 695                                if (level && *s == ')')
 696                                        break;
 697                        cur->len = s - p;
 698                        if (cur->len == 3 && !memcmp("NIL", p, 3))
 699                                cur->val = NIL;
 700                        else
 701                                cur->val = xmemdupz(p, cur->len);
 702                }
 703
 704                if (!level)
 705                        break;
 706                if (!*s)
 707                        goto bail;
 708        }
 709        *sp = s;
 710        *curp = NULL;
 711        return 0;
 712
 713bail:
 714        *curp = NULL;
 715        return -1;
 716}
 717
 718static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
 719{
 720        struct imap_list *head;
 721
 722        if (!parse_imap_list_l(imap, sp, &head, 0))
 723                return head;
 724        free_list(head);
 725        return NULL;
 726}
 727
 728static struct imap_list *parse_list(char **sp)
 729{
 730        return parse_imap_list(NULL, sp);
 731}
 732
 733static void parse_capability(struct imap *imap, char *cmd)
 734{
 735        char *arg;
 736        unsigned i;
 737
 738        imap->caps = 0x80000000;
 739        while ((arg = next_arg(&cmd)))
 740                for (i = 0; i < ARRAY_SIZE(cap_list); i++)
 741                        if (!strcmp(cap_list[i], arg))
 742                                imap->caps |= 1 << i;
 743        imap->rcaps = imap->caps;
 744}
 745
 746static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
 747                               char *s)
 748{
 749        struct imap *imap = ctx->imap;
 750        char *arg, *p;
 751
 752        if (*s != '[')
 753                return RESP_OK;         /* no response code */
 754        s++;
 755        if (!(p = strchr(s, ']'))) {
 756                fprintf(stderr, "IMAP error: malformed response code\n");
 757                return RESP_BAD;
 758        }
 759        *p++ = 0;
 760        arg = next_arg(&s);
 761        if (!strcmp("UIDVALIDITY", arg)) {
 762                if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg))) {
 763                        fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
 764                        return RESP_BAD;
 765                }
 766        } else if (!strcmp("UIDNEXT", arg)) {
 767                if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
 768                        fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
 769                        return RESP_BAD;
 770                }
 771        } else if (!strcmp("CAPABILITY", arg)) {
 772                parse_capability(imap, s);
 773        } else if (!strcmp("ALERT", arg)) {
 774                /* RFC2060 says that these messages MUST be displayed
 775                 * to the user
 776                 */
 777                for (; isspace((unsigned char)*p); p++);
 778                fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
 779        } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
 780                if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg)) ||
 781                    !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
 782                        fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
 783                        return RESP_BAD;
 784                }
 785        }
 786        return RESP_OK;
 787}
 788
 789static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
 790{
 791        struct imap *imap = ctx->imap;
 792        struct imap_cmd *cmdp, **pcmdp, *ncmdp;
 793        char *cmd, *arg, *arg1, *p;
 794        int n, resp, resp2, tag;
 795
 796        for (;;) {
 797                if (buffer_gets(&imap->buf, &cmd))
 798                        return RESP_BAD;
 799
 800                arg = next_arg(&cmd);
 801                if (*arg == '*') {
 802                        arg = next_arg(&cmd);
 803                        if (!arg) {
 804                                fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 805                                return RESP_BAD;
 806                        }
 807
 808                        if (!strcmp("NAMESPACE", arg)) {
 809                                imap->ns_personal = parse_list(&cmd);
 810                                imap->ns_other = parse_list(&cmd);
 811                                imap->ns_shared = parse_list(&cmd);
 812                        } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
 813                                   !strcmp("NO", arg) || !strcmp("BYE", arg)) {
 814                                if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
 815                                        return resp;
 816                        } else if (!strcmp("CAPABILITY", arg))
 817                                parse_capability(imap, cmd);
 818                        else if ((arg1 = next_arg(&cmd))) {
 819                                if (!strcmp("EXISTS", arg1))
 820                                        ctx->gen.count = atoi(arg);
 821                                else if (!strcmp("RECENT", arg1))
 822                                        ctx->gen.recent = atoi(arg);
 823                        } else {
 824                                fprintf(stderr, "IMAP error: unable to parse untagged response\n");
 825                                return RESP_BAD;
 826                        }
 827                } else if (!imap->in_progress) {
 828                        fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
 829                        return RESP_BAD;
 830                } else if (*arg == '+') {
 831                        /* This can happen only with the last command underway, as
 832                           it enforces a round-trip. */
 833                        cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
 834                               offsetof(struct imap_cmd, next));
 835                        if (cmdp->cb.data) {
 836                                n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
 837                                free(cmdp->cb.data);
 838                                cmdp->cb.data = NULL;
 839                                if (n != (int)cmdp->cb.dlen)
 840                                        return RESP_BAD;
 841                        } else if (cmdp->cb.cont) {
 842                                if (cmdp->cb.cont(ctx, cmdp, cmd))
 843                                        return RESP_BAD;
 844                        } else {
 845                                fprintf(stderr, "IMAP error: unexpected command continuation request\n");
 846                                return RESP_BAD;
 847                        }
 848                        if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
 849                                return RESP_BAD;
 850                        if (!cmdp->cb.cont)
 851                                imap->literal_pending = 0;
 852                        if (!tcmd)
 853                                return DRV_OK;
 854                } else {
 855                        tag = atoi(arg);
 856                        for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
 857                                if (cmdp->tag == tag)
 858                                        goto gottag;
 859                        fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
 860                        return RESP_BAD;
 861                gottag:
 862                        if (!(*pcmdp = cmdp->next))
 863                                imap->in_progress_append = pcmdp;
 864                        imap->num_in_progress--;
 865                        if (cmdp->cb.cont || cmdp->cb.data)
 866                                imap->literal_pending = 0;
 867                        arg = next_arg(&cmd);
 868                        if (!strcmp("OK", arg))
 869                                resp = DRV_OK;
 870                        else {
 871                                if (!strcmp("NO", arg)) {
 872                                        if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
 873                                                p = strchr(cmdp->cmd, '"');
 874                                                if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) {
 875                                                        resp = RESP_BAD;
 876                                                        goto normal;
 877                                                }
 878                                                /* not waiting here violates the spec, but a server that does not
 879                                                   grok this nonetheless violates it too. */
 880                                                cmdp->cb.create = 0;
 881                                                if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
 882                                                        resp = RESP_BAD;
 883                                                        goto normal;
 884                                                }
 885                                                free(cmdp->cmd);
 886                                                free(cmdp);
 887                                                if (!tcmd)
 888                                                        return 0;       /* ignored */
 889                                                if (cmdp == tcmd)
 890                                                        tcmd = ncmdp;
 891                                                continue;
 892                                        }
 893                                        resp = RESP_NO;
 894                                } else /*if (!strcmp("BAD", arg))*/
 895                                        resp = RESP_BAD;
 896                                fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
 897                                         memcmp(cmdp->cmd, "LOGIN", 5) ?
 898                                                        cmdp->cmd : "LOGIN <user> <pass>",
 899                                                        arg, cmd ? cmd : "");
 900                        }
 901                        if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
 902                                resp = resp2;
 903                normal:
 904                        if (cmdp->cb.done)
 905                                cmdp->cb.done(ctx, cmdp, resp);
 906                        free(cmdp->cb.data);
 907                        free(cmdp->cmd);
 908                        free(cmdp);
 909                        if (!tcmd || tcmd == cmdp)
 910                                return resp;
 911                }
 912        }
 913        /* not reached */
 914}
 915
 916static void imap_close_server(struct imap_store *ictx)
 917{
 918        struct imap *imap = ictx->imap;
 919
 920        if (imap->buf.sock.fd[0] != -1) {
 921                imap_exec(ictx, NULL, "LOGOUT");
 922                socket_shutdown(&imap->buf.sock);
 923        }
 924        free_list(imap->ns_personal);
 925        free_list(imap->ns_other);
 926        free_list(imap->ns_shared);
 927        free(imap);
 928}
 929
 930static void imap_close_store(struct store *ctx)
 931{
 932        imap_close_server((struct imap_store *)ctx);
 933        free_generic_messages(ctx->msgs);
 934        free(ctx);
 935}
 936
 937#ifndef NO_OPENSSL
 938
 939/*
 940 * hexchar() and cram() functions are based on the code from the isync
 941 * project (http://isync.sf.net/).
 942 */
 943static char hexchar(unsigned int b)
 944{
 945        return b < 10 ? '0' + b : 'a' + (b - 10);
 946}
 947
 948#define ENCODED_SIZE(n) (4*((n+2)/3))
 949static char *cram(const char *challenge_64, const char *user, const char *pass)
 950{
 951        int i, resp_len, encoded_len, decoded_len;
 952        HMAC_CTX hmac;
 953        unsigned char hash[16];
 954        char hex[33];
 955        char *response, *response_64, *challenge;
 956
 957        /*
 958         * length of challenge_64 (i.e. base-64 encoded string) is a good
 959         * enough upper bound for challenge (decoded result).
 960         */
 961        encoded_len = strlen(challenge_64);
 962        challenge = xmalloc(encoded_len);
 963        decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
 964                                      (unsigned char *)challenge_64, encoded_len);
 965        if (decoded_len < 0)
 966                die("invalid challenge %s", challenge_64);
 967        HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5());
 968        HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len);
 969        HMAC_Final(&hmac, hash, NULL);
 970        HMAC_CTX_cleanup(&hmac);
 971
 972        hex[32] = 0;
 973        for (i = 0; i < 16; i++) {
 974                hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
 975                hex[2 * i + 1] = hexchar(hash[i] & 0xf);
 976        }
 977
 978        /* response: "<user> <digest in hex>" */
 979        resp_len = strlen(user) + 1 + strlen(hex) + 1;
 980        response = xmalloc(resp_len);
 981        sprintf(response, "%s %s", user, hex);
 982
 983        response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
 984        encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
 985                                      (unsigned char *)response, resp_len);
 986        if (encoded_len < 0)
 987                die("EVP_EncodeBlock error");
 988        response_64[encoded_len] = '\0';
 989        return (char *)response_64;
 990}
 991
 992#else
 993
 994static char *cram(const char *challenge_64, const char *user, const char *pass)
 995{
 996        die("If you want to use CRAM-MD5 authenticate method, "
 997            "you have to build git-imap-send with OpenSSL library.");
 998}
 999
1000#endif
1001
1002static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
1003{
1004        int ret;
1005        char *response;
1006
1007        response = cram(prompt, server.user, server.pass);
1008
1009        ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
1010        if (ret != strlen(response))
1011                return error("IMAP error: sending response failed");
1012
1013        free(response);
1014
1015        return 0;
1016}
1017
1018static struct store *imap_open_store(struct imap_server_conf *srvc)
1019{
1020        struct imap_store *ctx;
1021        struct imap *imap;
1022        char *arg, *rsp;
1023        int s = -1, preauth;
1024
1025        ctx = xcalloc(sizeof(*ctx), 1);
1026
1027        ctx->imap = imap = xcalloc(sizeof(*imap), 1);
1028        imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
1029        imap->in_progress_append = &imap->in_progress;
1030
1031        /* open connection to IMAP server */
1032
1033        if (srvc->tunnel) {
1034                const char *argv[] = { srvc->tunnel, NULL };
1035                struct child_process tunnel = {NULL};
1036
1037                imap_info("Starting tunnel '%s'... ", srvc->tunnel);
1038
1039                tunnel.argv = argv;
1040                tunnel.use_shell = 1;
1041                tunnel.in = -1;
1042                tunnel.out = -1;
1043                if (start_command(&tunnel))
1044                        die("cannot start proxy %s", argv[0]);
1045
1046                imap->buf.sock.fd[0] = tunnel.out;
1047                imap->buf.sock.fd[1] = tunnel.in;
1048
1049                imap_info("ok\n");
1050        } else {
1051#ifndef NO_IPV6
1052                struct addrinfo hints, *ai0, *ai;
1053                int gai;
1054                char portstr[6];
1055
1056                snprintf(portstr, sizeof(portstr), "%d", srvc->port);
1057
1058                memset(&hints, 0, sizeof(hints));
1059                hints.ai_socktype = SOCK_STREAM;
1060                hints.ai_protocol = IPPROTO_TCP;
1061
1062                imap_info("Resolving %s... ", srvc->host);
1063                gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
1064                if (gai) {
1065                        fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
1066                        goto bail;
1067                }
1068                imap_info("ok\n");
1069
1070                for (ai0 = ai; ai; ai = ai->ai_next) {
1071                        char addr[NI_MAXHOST];
1072
1073                        s = socket(ai->ai_family, ai->ai_socktype,
1074                                   ai->ai_protocol);
1075                        if (s < 0)
1076                                continue;
1077
1078                        getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1079                                    sizeof(addr), NULL, 0, NI_NUMERICHOST);
1080                        imap_info("Connecting to [%s]:%s... ", addr, portstr);
1081
1082                        if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1083                                close(s);
1084                                s = -1;
1085                                perror("connect");
1086                                continue;
1087                        }
1088
1089                        break;
1090                }
1091                freeaddrinfo(ai0);
1092#else /* NO_IPV6 */
1093                struct hostent *he;
1094                struct sockaddr_in addr;
1095
1096                memset(&addr, 0, sizeof(addr));
1097                addr.sin_port = htons(srvc->port);
1098                addr.sin_family = AF_INET;
1099
1100                imap_info("Resolving %s... ", srvc->host);
1101                he = gethostbyname(srvc->host);
1102                if (!he) {
1103                        perror("gethostbyname");
1104                        goto bail;
1105                }
1106                imap_info("ok\n");
1107
1108                addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1109
1110                s = socket(PF_INET, SOCK_STREAM, 0);
1111
1112                imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1113                if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1114                        close(s);
1115                        s = -1;
1116                        perror("connect");
1117                }
1118#endif
1119                if (s < 0) {
1120                        fputs("Error: unable to connect to server.\n", stderr);
1121                        goto bail;
1122                }
1123
1124                imap->buf.sock.fd[0] = s;
1125                imap->buf.sock.fd[1] = dup(s);
1126
1127                if (srvc->use_ssl &&
1128                    ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1129                        close(s);
1130                        goto bail;
1131                }
1132                imap_info("ok\n");
1133        }
1134
1135        /* read the greeting string */
1136        if (buffer_gets(&imap->buf, &rsp)) {
1137                fprintf(stderr, "IMAP error: no greeting response\n");
1138                goto bail;
1139        }
1140        arg = next_arg(&rsp);
1141        if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1142                fprintf(stderr, "IMAP error: invalid greeting response\n");
1143                goto bail;
1144        }
1145        preauth = 0;
1146        if (!strcmp("PREAUTH", arg))
1147                preauth = 1;
1148        else if (strcmp("OK", arg) != 0) {
1149                fprintf(stderr, "IMAP error: unknown greeting response\n");
1150                goto bail;
1151        }
1152        parse_response_code(ctx, NULL, rsp);
1153        if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1154                goto bail;
1155
1156        if (!preauth) {
1157#ifndef NO_OPENSSL
1158                if (!srvc->use_ssl && CAP(STARTTLS)) {
1159                        if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1160                                goto bail;
1161                        if (ssl_socket_connect(&imap->buf.sock, 1,
1162                                               srvc->ssl_verify))
1163                                goto bail;
1164                        /* capabilities may have changed, so get the new capabilities */
1165                        if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1166                                goto bail;
1167                }
1168#endif
1169                imap_info("Logging in...\n");
1170                if (!srvc->user) {
1171                        fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
1172                        goto bail;
1173                }
1174                if (!srvc->pass) {
1175                        struct strbuf prompt = STRBUF_INIT;
1176                        strbuf_addf(&prompt, "Password (%s@%s): ", srvc->user, srvc->host);
1177                        arg = git_getpass(prompt.buf);
1178                        strbuf_release(&prompt);
1179                        if (!*arg) {
1180                                fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
1181                                goto bail;
1182                        }
1183                        /*
1184                         * getpass() returns a pointer to a static buffer.  make a copy
1185                         * for long term storage.
1186                         */
1187                        srvc->pass = xstrdup(arg);
1188                }
1189                if (CAP(NOLOGIN)) {
1190                        fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1191                        goto bail;
1192                }
1193
1194                if (srvc->auth_method) {
1195                        struct imap_cmd_cb cb;
1196
1197                        if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1198                                if (!CAP(AUTH_CRAM_MD5)) {
1199                                        fprintf(stderr, "You specified"
1200                                                "CRAM-MD5 as authentication method, "
1201                                                "but %s doesn't support it.\n", srvc->host);
1202                                        goto bail;
1203                                }
1204                                /* CRAM-MD5 */
1205
1206                                memset(&cb, 0, sizeof(cb));
1207                                cb.cont = auth_cram_md5;
1208                                if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1209                                        fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1210                                        goto bail;
1211                                }
1212                        } else {
1213                                fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1214                                goto bail;
1215                        }
1216                } else {
1217                        if (!imap->buf.sock.ssl)
1218                                imap_warn("*** IMAP Warning *** Password is being "
1219                                          "sent in the clear\n");
1220                        if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1221                                fprintf(stderr, "IMAP error: LOGIN failed\n");
1222                                goto bail;
1223                        }
1224                }
1225        } /* !preauth */
1226
1227        ctx->prefix = "";
1228        ctx->trashnc = 1;
1229        return (struct store *)ctx;
1230
1231bail:
1232        imap_close_store(&ctx->gen);
1233        return NULL;
1234}
1235
1236static void lf_to_crlf(struct strbuf *msg)
1237{
1238        size_t new_len;
1239        char *new;
1240        int i, j, lfnum = 0;
1241
1242        if (msg->buf[0] == '\n')
1243                lfnum++;
1244        for (i = 1; i < msg->len; i++) {
1245                if (msg->buf[i - 1] != '\r' && msg->buf[i] == '\n')
1246                        lfnum++;
1247        }
1248
1249        new_len = msg->len + lfnum;
1250        new = xmalloc(new_len + 1);
1251        if (msg->buf[0] == '\n') {
1252                new[0] = '\r';
1253                new[1] = '\n';
1254                i = 1;
1255                j = 2;
1256        } else {
1257                new[0] = msg->buf[0];
1258                i = 1;
1259                j = 1;
1260        }
1261        for ( ; i < msg->len; i++) {
1262                if (msg->buf[i] != '\n') {
1263                        new[j++] = msg->buf[i];
1264                        continue;
1265                }
1266                if (msg->buf[i - 1] != '\r')
1267                        new[j++] = '\r';
1268                /* otherwise it already had CR before */
1269                new[j++] = '\n';
1270        }
1271        strbuf_attach(msg, new, new_len, new_len + 1);
1272}
1273
1274/*
1275 * Store msg to IMAP.  Also detach and free the data from msg->data,
1276 * leaving msg->data empty.
1277 */
1278static int imap_store_msg(struct store *gctx, struct strbuf *msg)
1279{
1280        struct imap_store *ctx = (struct imap_store *)gctx;
1281        struct imap *imap = ctx->imap;
1282        struct imap_cmd_cb cb;
1283        const char *prefix, *box;
1284        int ret;
1285
1286        lf_to_crlf(msg);
1287        memset(&cb, 0, sizeof(cb));
1288
1289        cb.dlen = msg->len;
1290        cb.data = strbuf_detach(msg, NULL);
1291
1292        box = gctx->name;
1293        prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1294        cb.create = 0;
1295        ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1296        imap->caps = imap->rcaps;
1297        if (ret != DRV_OK)
1298                return ret;
1299        gctx->count++;
1300
1301        return DRV_OK;
1302}
1303
1304static void wrap_in_html(struct strbuf *msg)
1305{
1306        struct strbuf buf = STRBUF_INIT;
1307        static char *content_type = "Content-Type: text/html;\n";
1308        static char *pre_open = "<pre>\n";
1309        static char *pre_close = "</pre>\n";
1310        const char *body = strstr(msg->buf, "\n\n");
1311
1312        if (!body)
1313                return; /* Headers but no body; no wrapping needed */
1314
1315        body += 2;
1316
1317        strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1318        strbuf_addstr(&buf, content_type);
1319        strbuf_addch(&buf, '\n');
1320        strbuf_addstr(&buf, pre_open);
1321        strbuf_addstr_xml_quoted(&buf, body);
1322        strbuf_addstr(&buf, pre_close);
1323
1324        strbuf_release(msg);
1325        *msg = buf;
1326}
1327
1328#define CHUNKSIZE 0x1000
1329
1330static int read_message(FILE *f, struct strbuf *all_msgs)
1331{
1332        do {
1333                if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1334                        break;
1335        } while (!feof(f));
1336
1337        return ferror(f) ? -1 : 0;
1338}
1339
1340static int count_messages(struct strbuf *all_msgs)
1341{
1342        int count = 0;
1343        char *p = all_msgs->buf;
1344
1345        while (1) {
1346                if (!prefixcmp(p, "From ")) {
1347                        p = strstr(p+5, "\nFrom: ");
1348                        if (!p) break;
1349                        p = strstr(p+7, "\nDate: ");
1350                        if (!p) break;
1351                        p = strstr(p+7, "\nSubject: ");
1352                        if (!p) break;
1353                        p += 10;
1354                        count++;
1355                }
1356                p = strstr(p+5, "\nFrom ");
1357                if (!p)
1358                        break;
1359                p++;
1360        }
1361        return count;
1362}
1363
1364/*
1365 * Copy the next message from all_msgs, starting at offset *ofs, to
1366 * msg.  Update *ofs to the start of the following message.  Return
1367 * true iff a message was successfully copied.
1368 */
1369static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1370{
1371        char *p, *data;
1372        size_t len;
1373
1374        if (*ofs >= all_msgs->len)
1375                return 0;
1376
1377        data = &all_msgs->buf[*ofs];
1378        len = all_msgs->len - *ofs;
1379
1380        if (len < 5 || prefixcmp(data, "From "))
1381                return 0;
1382
1383        p = strchr(data, '\n');
1384        if (p) {
1385                p++;
1386                len -= p - data;
1387                *ofs += p - data;
1388                data = p;
1389        }
1390
1391        p = strstr(data, "\nFrom ");
1392        if (p)
1393                len = &p[1] - data;
1394
1395        strbuf_add(msg, data, len);
1396        *ofs += len;
1397        return 1;
1398}
1399
1400static char *imap_folder;
1401
1402static int git_imap_config(const char *key, const char *val, void *cb)
1403{
1404        char imap_key[] = "imap.";
1405
1406        if (strncmp(key, imap_key, sizeof imap_key - 1))
1407                return 0;
1408
1409        key += sizeof imap_key - 1;
1410
1411        /* check booleans first, and barf on others */
1412        if (!strcmp("sslverify", key))
1413                server.ssl_verify = git_config_bool(key, val);
1414        else if (!strcmp("preformattedhtml", key))
1415                server.use_html = git_config_bool(key, val);
1416        else if (!val)
1417                return config_error_nonbool(key);
1418
1419        if (!strcmp("folder", key)) {
1420                imap_folder = xstrdup(val);
1421        } else if (!strcmp("host", key)) {
1422                if (!prefixcmp(val, "imap:"))
1423                        val += 5;
1424                else if (!prefixcmp(val, "imaps:")) {
1425                        val += 6;
1426                        server.use_ssl = 1;
1427                }
1428                if (!prefixcmp(val, "//"))
1429                        val += 2;
1430                server.host = xstrdup(val);
1431        } else if (!strcmp("user", key))
1432                server.user = xstrdup(val);
1433        else if (!strcmp("pass", key))
1434                server.pass = xstrdup(val);
1435        else if (!strcmp("port", key))
1436                server.port = git_config_int(key, val);
1437        else if (!strcmp("tunnel", key))
1438                server.tunnel = xstrdup(val);
1439        else if (!strcmp("authmethod", key))
1440                server.auth_method = xstrdup(val);
1441
1442        return 0;
1443}
1444
1445int main(int argc, char **argv)
1446{
1447        struct strbuf all_msgs = STRBUF_INIT;
1448        struct strbuf msg = STRBUF_INIT;
1449        struct store *ctx = NULL;
1450        int ofs = 0;
1451        int r;
1452        int total, n = 0;
1453        int nongit_ok;
1454
1455        git_extract_argv0_path(argv[0]);
1456
1457        git_setup_gettext();
1458
1459        if (argc != 1)
1460                usage(imap_send_usage);
1461
1462        setup_git_directory_gently(&nongit_ok);
1463        git_config(git_imap_config, NULL);
1464
1465        if (!server.port)
1466                server.port = server.use_ssl ? 993 : 143;
1467
1468        if (!imap_folder) {
1469                fprintf(stderr, "no imap store specified\n");
1470                return 1;
1471        }
1472        if (!server.host) {
1473                if (!server.tunnel) {
1474                        fprintf(stderr, "no imap host specified\n");
1475                        return 1;
1476                }
1477                server.host = "tunnel";
1478        }
1479
1480        /* read the messages */
1481        if (read_message(stdin, &all_msgs)) {
1482                fprintf(stderr, "error reading input\n");
1483                return 1;
1484        }
1485
1486        if (all_msgs.len == 0) {
1487                fprintf(stderr, "nothing to send\n");
1488                return 1;
1489        }
1490
1491        total = count_messages(&all_msgs);
1492        if (!total) {
1493                fprintf(stderr, "no messages to send\n");
1494                return 1;
1495        }
1496
1497        /* write it to the imap server */
1498        ctx = imap_open_store(&server);
1499        if (!ctx) {
1500                fprintf(stderr, "failed to open store\n");
1501                return 1;
1502        }
1503
1504        fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1505        ctx->name = imap_folder;
1506        while (1) {
1507                unsigned percent = n * 100 / total;
1508
1509                fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1510                if (!split_msg(&all_msgs, &msg, &ofs))
1511                        break;
1512                if (server.use_html)
1513                        wrap_in_html(&msg);
1514                r = imap_store_msg(ctx, &msg);
1515                if (r != DRV_OK)
1516                        break;
1517                n++;
1518        }
1519        fprintf(stderr, "\n");
1520
1521        imap_close_store(ctx);
1522
1523        return 0;
1524}