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gpgme-1.23.0
gpgme/tests/run-decrypt.c
Ingo Klöcker 1a9f192ab4
core: Support reading the archive to decrypt/verify directly from a file 
* src/engine-gpg.c (add_file_name_arg_or_data): New.
(gpg_decrypt): Use add_file_name_arg_or_data instead of add_data for the
ciphertext.
(gpg_verify): Use add_file_name_arg_or_data instead of add_data for the
signature and the signed text.

* tests/run-decrypt.c (show_usage): New option --direct-file-io.
(main): Parse new option. If option is given, then don't open input
file, create simple data object instead of data object from stream and
set input file name on input data.
* tests/run-verify.c (show_usage): New option --direct-file-io.
(main): Parse new option. If option is given, then don't open input
files, create simple data objects instead of data objects from stream
and set input file names on input data objects.
--

This change makes it possible to tell gpg (and gpgtar) to read the
input (i.e. the signed/encrypted data or the signature or the created
archive) directly from the files with given file names instead of from
streams piped through GpgME's Data IO.

GnuPG-bug-id: 6530
2023-06-21 14:38:50 +02:00

423 lines
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/* run-decrypt.c - Helper to perform a verify operation
* Copyright (C) 2009 g10 Code GmbH
* 2016 by Bundesamt für Sicherheit in der Informationstechnik
* Software engineering by Intevation GmbH
*
* This file is part of GPGME.
*
* GPGME is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* GPGME 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <https://gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
/* We need to include config.h so that we know whether we are building
with large file system (LFS) support. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gpgme.h>
#define PGM "run-decrypt"
#include "run-support.h"
static int verbose;
static gpg_error_t
status_cb (void *opaque, const char *keyword, const char *value)
{
(void)opaque;
fprintf (stderr, "status_cb: %s %s\n", keyword, value);
return 0;
}
static void
print_result (gpgme_decrypt_result_t result)
{
gpgme_recipient_t recp;
int count = 0;
printf ("Original file name .: %s\n", nonnull(result->file_name));
printf ("Wrong key usage ....: %s\n", result->wrong_key_usage? "yes":"no");
printf ("Legacy w/o MDC ... .: %s\n", result->legacy_cipher_nomdc?"yes":"no");
printf ("Compliance de-vs ...: %s\n", result->is_de_vs? "yes":"no");
printf ("MIME flag ..........: %s\n", result->is_mime? "yes":"no");
printf ("Unsupported algo ...: %s\n", nonnull(result->unsupported_algorithm));
printf ("Session key ........: %s\n", nonnull (result->session_key));
printf ("Symmetric algorithm : %s\n", result->symkey_algo);
for (recp = result->recipients; recp && recp->next; recp = recp->next)
{
printf ("Recipient ...: %d\n", count++);
printf (" status ....: %s\n", gpgme_strerror (recp->status));
printf (" keyid .....: %s\n", nonnull (recp->keyid));
printf (" algo ......: %s\n",
gpgme_pubkey_algo_name (recp->pubkey_algo));
}
}
static int
show_usage (int ex)
{
fputs ("usage: " PGM " [options] FILE\n\n"
"Options:\n"
" --verbose run in verbose mode\n"
" --status print status lines from the backend\n"
" --openpgp use the OpenPGP protocol (default)\n"
" --cms use the CMS protocol\n"
" --export-session-key show the session key\n"
" --override-session-key STRING use STRING as session key\n"
" --request-origin STRING use STRING as request origin\n"
" --no-symkey-cache disable the use of that cache\n"
" --ignore-mdc-error allow decryption of legacy data\n"
" --unwrap remove only the encryption layer\n"
" --large-buffers use large I/O buffer\n"
" --sensitive mark data objects as sensitive\n"
" --archive extract files from an encrypted archive\n"
" --directory DIR extract the files into the directory DIR\n"
" --diagnostics print diagnostics\n"
" --direct-file-io pass FILE instead of stream with content of FILE to backend\n"
, stderr);
exit (ex);
}
int
main (int argc, char **argv)
{
int last_argc = -1;
gpgme_error_t err;
gpgme_ctx_t ctx;
gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
gpgme_decrypt_flags_t flags = 0;
FILE *fp_in = NULL;
gpgme_data_t in = NULL;
gpgme_data_t out = NULL;
gpgme_decrypt_result_t result;
int print_status = 0;
int export_session_key = 0;
const char *override_session_key = NULL;
const char *request_origin = NULL;
const char *directory = NULL;
int no_symkey_cache = 0;
int ignore_mdc_error = 0;
int raw_output = 0;
int large_buffers = 0;
int sensitive = 0;
int diagnostics = 0;
int direct_file_io = 0;
if (argc)
{ argc--; argv++; }
while (argc && last_argc != argc )
{
last_argc = argc;
if (!strcmp (*argv, "--"))
{
argc--; argv++;
break;
}
else if (!strcmp (*argv, "--help"))
show_usage (0);
else if (!strcmp (*argv, "--verbose"))
{
verbose = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--status"))
{
print_status = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--openpgp"))
{
protocol = GPGME_PROTOCOL_OpenPGP;
argc--; argv++;
}
else if (!strcmp (*argv, "--cms"))
{
protocol = GPGME_PROTOCOL_CMS;
argc--; argv++;
}
else if (!strcmp (*argv, "--export-session-key"))
{
export_session_key = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--override-session-key"))
{
argc--; argv++;
if (!argc)
show_usage (1);
override_session_key = *argv;
argc--; argv++;
}
else if (!strcmp (*argv, "--request-origin"))
{
argc--; argv++;
if (!argc)
show_usage (1);
request_origin = *argv;
argc--; argv++;
}
else if (!strcmp (*argv, "--no-symkey-cache"))
{
no_symkey_cache = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--ignore-mdc-error"))
{
ignore_mdc_error = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--diagnostics"))
{
diagnostics = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--large-buffers"))
{
large_buffers = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--sensitive"))
{
sensitive = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--unwrap"))
{
flags |= GPGME_DECRYPT_UNWRAP;
raw_output = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--archive"))
{
flags |= GPGME_DECRYPT_ARCHIVE;
argc--; argv++;
}
else if (!strcmp (*argv, "--directory"))
{
argc--; argv++;
if (!argc)
show_usage (1);
directory = *argv;
argc--; argv++;
}
else if (!strcmp (*argv, "--direct-file-io"))
{
direct_file_io = 1;
argc--; argv++;
}
else if (!strncmp (*argv, "--", 2))
show_usage (1);
}
if (argc < 1 || argc > 2)
show_usage (1);
if (!direct_file_io)
{
fp_in = fopen (argv[0], "rb");
if (!fp_in)
{
err = gpgme_error_from_syserror ();
fprintf (stderr, PGM ": can't open `%s': %s\n",
argv[0], gpgme_strerror (err));
exit (1);
}
}
init_gpgme (protocol);
err = gpgme_new (&ctx);
fail_if_err (err);
gpgme_set_protocol (ctx, protocol);
if (print_status)
{
gpgme_set_status_cb (ctx, status_cb, NULL);
gpgme_set_ctx_flag (ctx, "full-status", "1");
}
if (export_session_key)
{
err = gpgme_set_ctx_flag (ctx, "export-session-key", "1");
if (err)
{
fprintf (stderr, PGM ": error requesting exported session key: %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (override_session_key)
{
err = gpgme_set_ctx_flag (ctx, "override-session-key",
override_session_key);
if (err)
{
fprintf (stderr, PGM ": error setting overriding session key: %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (request_origin)
{
err = gpgme_set_ctx_flag (ctx, "request-origin", request_origin);
if (err)
{
fprintf (stderr, PGM ": error setting request_origin: %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (no_symkey_cache)
{
err = gpgme_set_ctx_flag (ctx, "no-symkey-cache", "1");
if (err)
{
fprintf (stderr, PGM ": error setting no-symkey-cache: %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (ignore_mdc_error)
{
err = gpgme_set_ctx_flag (ctx, "ignore-mdc-error", "1");
if (err)
{
fprintf (stderr, PGM ": error setting ignore-mdc-error: %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (direct_file_io)
err = gpgme_data_new (&in);
else
err = gpgme_data_new_from_stream (&in, fp_in);
if (err)
{
fprintf (stderr, PGM ": error allocating data object: %s\n",
gpgme_strerror (err));
exit (1);
}
if (direct_file_io)
{
err = gpgme_data_set_file_name (in, argv[0]);
if (err)
{
fprintf (stderr, PGM ": error setting file name (in): %s\n",
gpgme_strerror (err));
exit (1);
}
}
err = gpgme_data_new (&out);
if (err)
{
fprintf (stderr, PGM ": error allocating data object: %s\n",
gpgme_strerror (err));
exit (1);
}
if (directory && (flags & GPGME_DECRYPT_ARCHIVE))
{
err = gpgme_data_set_file_name (out, directory);
if (err)
{
fprintf (stderr, PGM ": error setting file name (out): %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (large_buffers)
{
err = gpgme_data_set_flag (out, "io-buffer-size", "1000000");
if (err)
{
fprintf (stderr, PGM ": error setting io-buffer-size (out): %s\n",
gpgme_strerror (err));
exit (1);
}
}
if (sensitive)
{
err = gpgme_data_set_flag (out, "sensitive", "1");
if (err)
{
fprintf (stderr, PGM ": error setting sensitive flag (out): %s\n",
gpgme_strerror (err));
exit (1);
}
}
err = gpgme_op_decrypt_ext (ctx, flags, in, out);
result = gpgme_op_decrypt_result (ctx);
if (diagnostics)
{
gpgme_data_t diag;
gpgme_error_t diag_err;
gpgme_data_new (&diag);
diag_err = gpgme_op_getauditlog (ctx, diag, GPGME_AUDITLOG_DIAG);
if (diag_err)
{
fprintf (stderr, PGM ": getting diagnostics failed: %s\n",
gpgme_strerror (diag_err));
}
else
{
fputs ("Begin Diagnostics:\n", stdout);
print_data (diag);
fputs ("End Diagnostics.\n", stdout);
}
gpgme_data_release (diag);
}
if (err)
{
fprintf (stderr, PGM ": decrypt failed: %s\n", gpgme_strerror (err));
if (result)
print_result (result);
exit (1);
}
if (result)
{
if (!raw_output)
print_result (result);
if (!raw_output)
fputs ("Begin Output:\n", stdout);
print_data (out);
if (!raw_output)
fputs ("End Output.\n", stdout);
}
gpgme_data_release (out);
gpgme_data_release (in);
gpgme_release (ctx);
return 0;
}
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