aboutsummaryrefslogtreecommitdiffstats
path: root/lang/cpp/src/configuration.cpp
diff options
context:
space:
mode:
authorWerner Koch <[email protected]>2016-05-21 08:21:06 +0000
committerWerner Koch <[email protected]>2016-05-21 08:31:20 +0000
commita92946a8cacc44f655249d84b316deae59e62671 (patch)
treea3b25f4cef4cb6ab3cfdb5940d92f714949a88e9 /lang/cpp/src/configuration.cpp
parentQt: Add test for changeownertrust (diff)
downloadgpgme-a92946a8cacc44f655249d84b316deae59e62671.tar.gz
gpgme-a92946a8cacc44f655249d84b316deae59e62671.zip
core: New functions to help parsing of status lines.
* src/conversion.c (_gpgme_split_fields): New. (_gpgme_strtoul_field): New. -- Signed-off-by: Werner Koch <[email protected]>
Diffstat (limited to 'lang/cpp/src/configuration.cpp')
0 files changed, 0 insertions, 0 deletions
generated by cgit (git 2.51.2) at 2025-11-27 10:04:33 +0000
>58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 
/* gpgparsemail.c - Standalone crypto mail parser
 *	Copyright (C) 2004, 2007 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * GnuPG is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses/>.
 */


/* This utility prints an RFC822, possible MIME structured, message
   in an annotated format with the first column having an indicator
   for the content of the line.  Several options are available to
   scrutinize the message.  S/MIME and OpenPGP support is included. */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <stdarg.h>
#include <assert.h>
#include <time.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/wait.h>

#include "rfc822parse.h"


#define PGM "gpgparsemail"

/* Option flags. */
static int verbose;
static int debug;
static int opt_crypto;    /* Decrypt or verify messages. */
static int opt_no_header; /* Don't output the header lines. */

/* Structure used to communicate with the parser callback. */
struct parse_info_s {
  int show_header;             /* Show the header lines. */
  int show_data;               /* Show the data lines. */
  unsigned int skip_show;      /* Temporary disable above for these
                                   number of lines. */
  int show_data_as_note;       /* The next data line should be shown
                                  as a note. */
  int show_boundary;
  int nesting_level;

  int is_pkcs7;                /* Old style S/MIME message. */

  int smfm_state;              /* State of PGP/MIME or S/MIME parsing.  */
  int is_smime;                /* This is S/MIME and not PGP/MIME. */

  const char *signing_protocol;
  const char *signing_protocol_2; /* there are two ways to present
                                     PKCS7 */
  int hashing_level;           /* The nesting level we are hashing. */
  int hashing;
  FILE *hash_file;

  FILE *sig_file;              /* Signature part with MIME or full
                                  pkcs7 data if IS_PCKS7 is set. */
  int  verify_now;             /* Flag set when all signature data is
                                  available. */
};


/* Print diagnostic message and exit with failure. */
static void
die (const char *format, ...)
{
  va_list arg_ptr;

  fflush (stdout);
  fprintf (stderr, "%s: ", PGM);

  va_start (arg_ptr, format);
  vfprintf (stderr, format, arg_ptr);
  va_end (arg_ptr);
  putc ('\n', stderr);

  exit (1);
}


/* Print diagnostic message. */
static void
err (const char *format, ...)
{
  va_list arg_ptr;

  fflush (stdout);
  fprintf (stderr, "%s: ", PGM);

  va_start (arg_ptr, format);
  vfprintf (stderr, format, arg_ptr);
  va_end (arg_ptr);
  putc ('\n', stderr);
}

static void *
xmalloc (size_t n)
{
  void *p = malloc (n);
  if (!p)
    die ("out of core: %s", strerror (errno));
  return p;
}

/* static void * */
/* xcalloc (size_t n, size_t m) */
/* { */
/*   void *p = calloc (n, m); */
/*   if (!p) */
/*     die ("out of core: %s", strerror (errno)); */
/*   return p; */
/* } */

/* static void * */
/* xrealloc (void *old, size_t n) */
/* { */
/*   void *p = realloc (old, n); */
/*   if (!p) */
/*     die ("out of core: %s", strerror (errno)); */
/*   return p; */
/* } */

/* static char * */
/* xstrdup (const char *string) */
/* { */
/*   void *p = malloc (strlen (string)+1); */
/*   if (!p) */
/*     die ("out of core: %s", strerror (errno)); */
/*   strcpy (p, string); */
/*   return p; */
/* } */

#ifndef HAVE_STPCPY
static char *
stpcpy (char *a,const char *b)
{
  while (*b)
    *a++ = *b++;
  *a = 0;

  return (char*)a;
}
#endif

static int
run_gnupg (int smime, int sig_fd, int data_fd, int *close_list)
{
  int rp[2];
  pid_t pid;
  int i, c, is_status;
  unsigned int pos;
  char status_buf[10];
  FILE *fp;

  if (pipe (rp) == -1)
    die ("error creating a pipe: %s", strerror (errno));

  pid = fork ();
  if (pid == -1)
    die ("error forking process: %s", strerror (errno));

  if (!pid)
    { /* Child. */
      char data_fd_buf[50];
      int fd;

      /* Connect our signature fd to stdin. */
      if (sig_fd != 0)
        {
          if (dup2 (sig_fd, 0) == -1)
            die ("dup2 stdin failed: %s", strerror (errno));
        }

      /* Keep our data fd and format it for gpg/gpgsm use. */
      if (data_fd == -1)
        *data_fd_buf = 0;
      else
        sprintf (data_fd_buf, "-&%d", data_fd);

      /* Send stdout to the bit bucket. */
      fd = open ("/dev/null", O_WRONLY);
      if (fd == -1)
        die ("can't open '/dev/null': %s", strerror (errno));
      if (fd != 1)
	{
          if (dup2 (fd, 1) == -1)
            die ("dup2 stderr failed: %s", strerror (errno));
        }

      /* Connect stderr to our pipe. */
      if (rp[1] != 2)
	{
	  if (dup2 (rp[1], 2) == -1)
	    die ("dup2 stderr failed: %s", strerror (errno));
	}

      /* Close other files. */
      for (i=0; (fd=close_list[i]) != -1; i++)
        if (fd > 2 && fd != data_fd)
          close (fd);
      errno = 0;

      if (smime)
        execlp ("gpgsm", "gpgsm",
                "--enable-special-filenames",
                "--status-fd", "2",
                "--assume-base64",
                "--verify",
                "--",
                "-", data_fd == -1? NULL : data_fd_buf,
                NULL);
      else
        execlp ("gpg", "gpg",
                "--enable-special-filenames",
                "--status-fd", "2",
                "--verify",
                "--debug=512",
                "--",
                "-", data_fd == -1? NULL : data_fd_buf,
                NULL);

      die ("failed to exec the crypto command: %s", strerror (errno));
    }

  /* Parent. */
  close (rp[1]);

  fp = fdopen (rp[0], "r");
  if (!fp)
    die ("can't fdopen pipe for reading: %s", strerror (errno));

  pos = 0;
  is_status = 0;
  assert (sizeof status_buf > 9);
  while ((c=getc (fp)) != EOF)
    {
      if (pos < 9)
        status_buf[pos] = c;
      else
        {
          if (pos == 9)
            {
              is_status = !memcmp (status_buf, "[GNUPG:] ", 9);
              if (is_status)
                fputs ( "c ", stdout);
              else if (verbose)
                fputs ( "# ", stdout);
              fwrite (status_buf, 9, 1, stdout);
            }
          putchar (c);
        }
      if (c == '\n')
        {
          if (verbose && pos < 9)
            {
              fputs ( "# ", stdout);
              fwrite (status_buf, pos+1, 1, stdout);
            }
          pos = 0;
        }
      else
        pos++;
    }
  if (pos)
    {
      if (verbose && pos < 9)
        {
          fputs ( "# ", stdout);
          fwrite (status_buf, pos+1, 1, stdout);
        }
      putchar ('\n');
    }
  fclose (fp);

  while ( (i=waitpid (pid, NULL, 0)) == -1 && errno == EINTR)
    ;
  if (i == -1)
    die ("waiting for child failed: %s", strerror (errno));

  return 0;
}




/* Verify the signature in the current temp files. */
static void
verify_signature (struct parse_info_s *info)
{
  int close_list[10];

  if (info->is_pkcs7)
    {
      assert (!info->hash_file);
      assert (info->sig_file);
      rewind (info->sig_file);
    }
  else
    {
      assert (info->hash_file);
      assert (info->sig_file);
      rewind (info->hash_file);
      rewind (info->sig_file);
    }

/*   printf ("# Begin hashed data\n"); */
/*   while ( (c=getc (info->hash_file)) != EOF) */
/*     putchar (c); */
/*   printf ("# End hashed data signature\n"); */
/*   printf ("# Begin signature\n"); */
/*   while ( (c=getc (info->sig_file)) != EOF) */
/*     putchar (c); */
/*   printf ("# End signature\n"); */
/*   rewind (info->hash_file); */
/*   rewind (info->sig_file); */

  close_list[0] = -1;
  run_gnupg (info->is_smime, fileno (info->sig_file),
             info->hash_file ? fileno (info->hash_file) : -1, close_list);
}





/* Prepare for a multipart/signed.
   FIELD_CTX is the parsed context of the content-type header.*/
static void
mime_signed_begin (struct parse_info_s *info, rfc822parse_t msg,
                   rfc822parse_field_t field_ctx)
{
  const char *s;

  (void)msg;

  s = rfc822parse_query_parameter (field_ctx, "protocol", 1);
  if (s)
    {
      printf ("h signed.protocol: %s\n", s);
      if (!strcmp (s, "application/pgp-signature"))
        {
          if (info->smfm_state)
            err ("note: ignoring nested PGP/MIME or S/MIME signature");
          else
            {
              info->smfm_state = 1;
              info->is_smime = 0;
              info->signing_protocol = "application/pgp-signature";
              info->signing_protocol_2 = NULL;
            }
        }
      else if (!strcmp (s, "application/pkcs7-signature")
               || !strcmp (s, "application/x-pkcs7-signature"))
        {
          if (info->smfm_state)
            err ("note: ignoring nested PGP/MIME or S/MIME signature");
          else
            {
              info->smfm_state = 1;
              info->is_smime = 1;
              info->signing_protocol = "application/pkcs7-signature";
              info->signing_protocol_2 = "application/x-pkcs7-signature";
            }
        }
      else if (verbose)
        printf ("# this protocol is not supported\n");
    }
}


/* Prepare for a multipart/encrypted.
   FIELD_CTX is the parsed context of the content-type header.*/
static void
mime_encrypted_begin (struct parse_info_s *info, rfc822parse_t msg,
                      rfc822parse_field_t field_ctx)
{
  const char *s;

  (void)info;
  (void)msg;

  s = rfc822parse_query_parameter (field_ctx, "protocol", 0);
  if (s)
    printf ("h encrypted.protocol: %s\n", s);
}


/* Prepare for old-style pkcs7 messages. */
static void
pkcs7_begin (struct parse_info_s *info, rfc822parse_t msg,
             rfc822parse_field_t field_ctx)
{
  const char *s;

  (void)msg;

  s = rfc822parse_query_parameter (field_ctx, "name", 0);
  if (s)
    printf ("h pkcs7.name: %s\n", s);
  if (info->is_pkcs7)
    err ("note: ignoring nested pkcs7 data");
  else
    {
      info->is_pkcs7 = 1;
      if (opt_crypto)
        {
          assert (!info->sig_file);
          info->sig_file = tmpfile ();
          if (!info->sig_file)
            die ("error creating temp file: %s", strerror (errno));
        }
    }
}


/* Print the event received by the parser for debugging as comment
   line. */
static void
show_event (rfc822parse_event_t event)
{
  const char *s;

  switch (event)
    {
    case RFC822PARSE_OPEN: s= "Open"; break;
    case RFC822PARSE_CLOSE: s= "Close"; break;
    case RFC822PARSE_CANCEL: s= "Cancel"; break;
    case RFC822PARSE_T2BODY: s= "T2Body"; break;
    case RFC822PARSE_FINISH: s= "Finish"; break;
    case RFC822PARSE_RCVD_SEEN: s= "Rcvd_Seen"; break;
    case RFC822PARSE_LEVEL_DOWN: s= "Level_Down"; break;
    case RFC822PARSE_LEVEL_UP: s= "Level_Up"; break;