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Fix detection of invalid signer keys.

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Support the new INV_SGNR status code.
This commit is contained in:
Werner Koch 2009-08-06 17:17:18 +00:00
parent 54719f4937
commit 0fcf3ee915
13 changed files with 271 additions and 14 deletions
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6
NEWS
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@ -3,6 +3,12 @@ Noteworthy changes in version 1.2.1 (unreleased)
* (none yet)
* Interface changes relative to the 1.1.7 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GPGME_STATUS_INV_SGNR NEW.
GPGME_STATUS_NO_SGNR NEW.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Noteworthy changes in version 1.2.0 (2009-06-18)
------------------------------------------------

5
doc/ChangeLog
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@ -1,3 +1,8 @@
2009-07-21 Werner Koch <wk@g10code.com>
* uiserver.texi (UI Server Encrypt): Add --expect-sign option to
PREP_ENCRYPT.
2009-06-16 Marcus Brinkmann <marcus@g10code.de>
* gpgme.texi (Result Management): New section.

2
doc/gpgme.texi
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@ -4777,7 +4777,7 @@ of a @code{gpgme_op_sign} operation. The pointer is only valid if the
last operation on the context was a @code{gpgme_op_sign},
@code{gpgme_op_sign_start}, @code{gpgme_op_encrypt_sign} or
@code{gpgme_op_encrypt_sign_start} operation. If that operation
failed, the function might return a @code{NULL} pointer, The returned
failed, the function might return a @code{NULL} pointer. The returned
pointer is only valid until the next operation is started on the
context.
@end deftypefun

9
doc/uiserver.texi
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@ -118,7 +118,7 @@ Use the CMS (PKCS#7) protocol (RFC-3852).
To support automagically selection of the protocol depending on the
selected keys, the server MAY implement the command:
@deffn Command PREP_ENCRYPT [-@w{}-protocol=@var{name}]
@deffn Command PREP_ENCRYPT [-@w{}-protocol=@var{name}] [-@w{}-expect-sign]
This commands considers all recipients set so far and decides whether it
is able to take input and start the actual decryption. This is kind of
@ -129,6 +129,13 @@ command is send. The @option{--protocol} option is optional; if it is
not given, the server should allow the user to select the protocol to be
used based on the recipients given or by any other means.
If @option{--expect-sign} is given the server should expect that the
message will also be signed and use this hint to present a unified
recipient and signer selection dialog if possible and desired. A
selected signer should then be cached for the expected SIGN command
(which is expected in the same session but possible on another
connection).
If this command is given again before a successful @command{ENCRYPT}
command, the second one takes effect.

13
src/ChangeLog
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@ -1,3 +1,16 @@
2009-08-06 Werner Koch <wk@g10code.com>
* op-support.c (_gpgme_parse_inv_recp): Allow for no fingerprint.
* engine-gpgsm.c (gpgsm_sign): Hook up the status func for the
SIGNER command.
* gpgme.h.in (GPGME_STATUS_INV_SGNR, GPGME_STATUS_NO_SGNR): New.
* sign.c (op_data_t): Add fields IGNORE_INV_RECP and INV_SGNR_SEEN.
(_gpgme_op_sign_init_result): Factor code out to ...
(sign_init_result): .. new. Init new fields.
(sign_start): Use sign_init_result.
(_gpgme_sign_status_handler): Take care of the new INV_SGNR.
2009-07-07 Werner Koch <wk@g10code.com>
* engine-gpgsm.c (struct engine_gpgsm): Add fields

3
src/engine-gpgsm.c
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@ -1885,7 +1885,8 @@ gpgsm_sign (void *engine, gpgme_data_t in, gpgme_data_t out,
strcpy (stpcpy (buf, "SIGNER "), s);
err = gpgsm_assuan_simple_command (gpgsm->assuan_ctx, buf,
NULL, NULL);
gpgsm->status.fnc,
gpgsm->status.fnc_value);
}
else
err = gpg_error (GPG_ERR_INV_VALUE);

4
src/gpgme.h.in
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@ -485,7 +485,9 @@ typedef enum
GPGME_STATUS_PKA_TRUST_BAD = 79,
GPGME_STATUS_PKA_TRUST_GOOD = 80,
GPGME_STATUS_PLAINTEXT = 81
GPGME_STATUS_PLAINTEXT = 81,
GPGME_STATUS_INV_SGNR = 82,
GPGME_STATUS_NO_SGNR = 83
}
gpgme_status_code_t;

8
src/op-support.c
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@ -162,8 +162,8 @@ _gpgme_op_reset (gpgme_ctx_t ctx, int type)
}
/* Parse the INV_RECP status line in ARGS and return the result in
KEY. */
/* Parse the INV_RECP or INV-SNDR status line in ARGS and return the
result in KEY. */
gpgme_error_t
_gpgme_parse_inv_recp (char *args, gpgme_invalid_key_t *key)
{
@ -177,7 +177,7 @@ _gpgme_parse_inv_recp (char *args, gpgme_invalid_key_t *key)
inv_key->next = NULL;
errno = 0;
reason = strtol (args, &tail, 0);
if (errno || args == tail || *tail != ' ')
if (errno || args == tail || (*tail && *tail != ' '))
{
/* The crypto backend does not behave. */
free (inv_key);
@ -236,7 +236,7 @@ _gpgme_parse_inv_recp (char *args, gpgme_invalid_key_t *key)
break;
}
while (*tail == ' ')
while (*tail && *tail == ' ')
tail++;
if (*tail)
{

27
src/sign.c
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@ -46,6 +46,10 @@ typedef struct
/* Likewise for signature information. */
gpgme_new_signature_t *last_sig_p;
/* Flags used while processing the status lines. */
unsigned int ignore_inv_recp:1;
unsigned int inv_sgnr_seen:1;
} *op_data_t;
@ -266,6 +270,12 @@ _gpgme_sign_status_handler (void *priv, gpgme_status_code_t code, char *args)
break;
case GPGME_STATUS_INV_RECP:
if (opd->inv_sgnr_seen && opd->ignore_inv_recp)
break;
/* FALLTROUGH */
case GPGME_STATUS_INV_SGNR:
if (code == GPGME_STATUS_INV_SGNR)
opd->inv_sgnr_seen = 1;
err = _gpgme_parse_inv_recp (args, opd->last_signer_p);
if (err)
return err;
@ -297,8 +307,8 @@ sign_status_handler (void *priv, gpgme_status_code_t code, char *args)
}
gpgme_error_t
_gpgme_op_sign_init_result (gpgme_ctx_t ctx)
static gpgme_error_t
sign_init_result (gpgme_ctx_t ctx, int ignore_inv_recp)
{
gpgme_error_t err;
void *hook;
@ -311,9 +321,17 @@ _gpgme_op_sign_init_result (gpgme_ctx_t ctx)
return err;
opd->last_signer_p = &opd->result.invalid_signers;
opd->last_sig_p = &opd->result.signatures;
opd->ignore_inv_recp = !!ignore_inv_recp;
opd->inv_sgnr_seen = 0;
return 0;
}
gpgme_error_t
_gpgme_op_sign_init_result (gpgme_ctx_t ctx)
{
return sign_init_result (ctx, 0);
}
static gpgme_error_t
sign_start (gpgme_ctx_t ctx, int synchronous, gpgme_data_t plain,
@ -325,7 +343,10 @@ sign_start (gpgme_ctx_t ctx, int synchronous, gpgme_data_t plain,
if (err)
return err;
err = _gpgme_op_sign_init_result (ctx);
/* If we are using the CMS protocol, we ignore the INV_RECP status
code if a newer GPGSM is in use. GPGMS does not support combined
sign+encrypt and thus this can't harm. */
err = sign_init_result (ctx, (ctx->protocol == GPGME_PROTOCOL_CMS));
if (err)
return err;

4
tests/ChangeLog
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@ -1,3 +1,7 @@
2009-08-06 Werner Koch <wk@g10code.com>
* run-sign.c: New.
2009-07-07 Werner Koch <wk@g10code.com>
* run-keylist.c (main): Add options --cms and --openpgp.

2
tests/Makefile.am
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@ -32,7 +32,7 @@ LDADD = ../src/libgpgme.la @GPG_ERROR_LIBS@
noinst_HEADERS = run-support.h
noinst_PROGRAMS = $(TESTS) run-keylist run-export run-import
noinst_PROGRAMS = $(TESTS) run-keylist run-export run-import run-sign
if RUN_GPG_TESTS

11
tests/gpg/t-sign.c
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@ -103,6 +103,17 @@ main (int argc, char **argv)
gpgme_set_textmode (ctx, 1);
gpgme_set_armor (ctx, 1);
#if 0
{
gpgme_key_t akey;
err = gpgme_get_key (ctx, "0x68697734", &akey, 0);
fail_if_err (err);
err = gpgme_signers_add (ctx, akey);
fail_if_err (err);
gpgme_key_unref (akey);
}
#endif
err = gpgme_data_new_from_mem (&in, "Hallo Leute\n", 12, 0);
fail_if_err (err);

187
tests/run-sign.c Normal file
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@ -0,0 +1,187 @@
/* run-sign.c - Helper to perform a sign operation
Copyright (C) 2009 g10 Code 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 <http://www.gnu.org/licenses/>.
*/
/* 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-sign"
#include "run-support.h"
static int verbose;
static void
print_result (gpgme_sign_result_t result, gpgme_sig_mode_t type)
{
gpgme_invalid_key_t invkey;
gpgme_new_signature_t sig;
for (invkey = result->invalid_signers; invkey; invkey = invkey->next)
printf ("Signing key `%s' not used: %s <%s>\n",
nonnull (invkey->fpr),
gpg_strerror (invkey->reason), gpg_strsource (invkey->reason));
for (sig = result->signatures; sig; sig = sig->next)
{
printf ("Key fingerprint: %s\n", nonnull (sig->fpr));
printf ("Signature type : %d\n", sig->type);
printf ("Public key algo: %d\n", sig->pubkey_algo);
printf ("Hash algo .....: %d\n", sig->hash_algo);
printf ("Creation time .: %ld\n", sig->timestamp);
printf ("Sig class .....: 0x%u\n", sig->sig_class);
}
}
static int
show_usage (int ex)
{
fputs ("usage: " PGM " [options] FILE\n\n"
"Options:\n"
" --verbose run in verbose mode\n"
" --openpgp use the OpenPGP protocol (default)\n"
" --cms use the CMS protocol\n"
" --key NAME use key NAME for signing\n"
, stderr);
exit (ex);
}
int
main (int argc, char **argv)
{
int last_argc = -1;
gpgme_error_t err;
gpgme_ctx_t ctx;
const char *key_string = NULL;
gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
gpgme_sig_mode_t sigmode = GPGME_SIG_MODE_NORMAL;
gpgme_data_t in, out;
gpgme_sign_result_t result;
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, "--openpgp"))
{
protocol = GPGME_PROTOCOL_OpenPGP;
argc--; argv++;
}
else if (!strcmp (*argv, "--cms"))
{
protocol = GPGME_PROTOCOL_CMS;
argc--; argv++;
}
else if (!strcmp (*argv, "--key"))
{
argc--; argv++;
if (!argc)
show_usage (1);
key_string = *argv;
argc--; argv++;
}
else if (!strncmp (*argv, "--", 2))
show_usage (1);
}
if (argc != 1)
show_usage (1);
init_gpgme (protocol);
err = gpgme_new (&ctx);
fail_if_err (err);
gpgme_set_protocol (ctx, protocol);
gpgme_set_armor (ctx, 1);
if (key_string)
{
gpgme_key_t akey;
err = gpgme_get_key (ctx, key_string, &akey, 1);
if (err)
{
fprintf (stderr, PGM ": error getting key `%s': %s\n",
key_string, gpg_strerror (err));
exit (1);
}
err = gpgme_signers_add (ctx, akey);
fail_if_err (err);
gpgme_key_unref (akey);
}
err = gpgme_data_new_from_file (&in, *argv, 1);
if (err)
{
fprintf (stderr, PGM ": error reading `%s': %s\n",
*argv, gpg_strerror (err));
exit (1);
}
err = gpgme_data_new (&out);
fail_if_err (err);
err = gpgme_op_sign (ctx, in, out, sigmode);
result = gpgme_op_sign_result (ctx);
if (result)
print_result (result, sigmode);
if (err)
{
fprintf (stderr, PGM ": signing failed: %s\n", gpg_strerror (err));
exit (1);
}
fputs ("Begin Output:\n", stdout);
print_data (out);
fputs ("End Output.\n", stdout);
gpgme_data_release (out);
gpgme_data_release (in);
gpgme_release (ctx);
return 0;
}