2008-12-07 12:58:24 -05:00
|
|
|
/*
|
|
|
|
* signing.c
|
|
|
|
*
|
|
|
|
* Copyright (c) 2008-2011 Pacman Development Team <pacman-dev@archlinux.org>
|
|
|
|
*
|
|
|
|
* This program 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 2 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program 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 <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "config.h"
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <string.h>
|
2011-04-24 12:40:58 -04:00
|
|
|
|
|
|
|
#if HAVE_LIBGPGME
|
2008-12-07 12:58:24 -05:00
|
|
|
#include <locale.h> /* setlocale() */
|
|
|
|
#include <gpgme.h>
|
2011-04-24 12:40:58 -04:00
|
|
|
#include "base64.h"
|
|
|
|
#endif
|
2008-12-07 12:58:24 -05:00
|
|
|
|
|
|
|
/* libalpm */
|
|
|
|
#include "signing.h"
|
|
|
|
#include "package.h"
|
|
|
|
#include "util.h"
|
|
|
|
#include "log.h"
|
|
|
|
#include "alpm.h"
|
2011-06-07 17:06:16 -04:00
|
|
|
#include "handle.h"
|
2008-12-07 12:58:24 -05:00
|
|
|
|
2011-04-24 12:40:58 -04:00
|
|
|
#if HAVE_LIBGPGME
|
2008-12-07 12:58:24 -05:00
|
|
|
#define CHECK_ERR(void) do { \
|
2011-07-01 16:51:21 -04:00
|
|
|
if(gpg_err_code(err) != GPG_ERR_NO_ERROR) { goto error; } \
|
2008-12-07 12:58:24 -05:00
|
|
|
} while(0)
|
|
|
|
|
2011-06-14 11:15:43 -04:00
|
|
|
static const char *string_validity(gpgme_validity_t validity)
|
2011-04-22 16:55:54 -04:00
|
|
|
{
|
|
|
|
switch(validity) {
|
|
|
|
case GPGME_VALIDITY_UNKNOWN:
|
|
|
|
return "unknown";
|
|
|
|
case GPGME_VALIDITY_UNDEFINED:
|
|
|
|
return "undefined";
|
|
|
|
case GPGME_VALIDITY_NEVER:
|
|
|
|
return "never";
|
|
|
|
case GPGME_VALIDITY_MARGINAL:
|
|
|
|
return "marginal";
|
|
|
|
case GPGME_VALIDITY_FULL:
|
|
|
|
return "full";
|
|
|
|
case GPGME_VALIDITY_ULTIMATE:
|
|
|
|
return "ultimate";
|
|
|
|
}
|
|
|
|
return "???";
|
|
|
|
}
|
|
|
|
|
2011-06-14 11:15:43 -04:00
|
|
|
static void sigsum_test_bit(gpgme_sigsum_t sigsum, alpm_list_t **summary,
|
2011-05-04 16:42:50 -04:00
|
|
|
gpgme_sigsum_t bit, const char *value)
|
|
|
|
{
|
|
|
|
if(sigsum & bit) {
|
2011-06-14 11:15:43 -04:00
|
|
|
*summary = alpm_list_add(*summary, (void *)value);
|
2011-05-04 16:42:50 -04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-06-14 11:15:43 -04:00
|
|
|
static alpm_list_t *list_sigsum(gpgme_sigsum_t sigsum)
|
2011-04-22 16:55:54 -04:00
|
|
|
{
|
|
|
|
alpm_list_t *summary = NULL;
|
|
|
|
/* The docs say this can be a bitmask...not sure I believe it, but we'll code
|
|
|
|
* for it anyway and show all possible flags in the returned string. */
|
|
|
|
|
|
|
|
/* The signature is fully valid. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_VALID, "valid");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* The signature is good. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_GREEN, "green");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* The signature is bad. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_RED, "red");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* One key has been revoked. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_KEY_REVOKED, "key revoked");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* One key has expired. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_KEY_EXPIRED, "key expired");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* The signature has expired. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_SIG_EXPIRED, "sig expired");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* Can't verify: key missing. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_KEY_MISSING, "key missing");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* CRL not available. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_CRL_MISSING, "crl missing");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* Available CRL is too old. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_CRL_TOO_OLD, "crl too old");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* A policy was not met. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_BAD_POLICY, "bad policy");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* A system error occured. */
|
2011-06-14 11:15:43 -04:00
|
|
|
sigsum_test_bit(sigsum, &summary, GPGME_SIGSUM_SYS_ERROR, "sys error");
|
2011-04-22 16:55:54 -04:00
|
|
|
/* Fallback case */
|
|
|
|
if(!sigsum) {
|
2011-05-04 16:42:50 -04:00
|
|
|
summary = alpm_list_add(summary, (void *)"(empty)");
|
2011-04-22 16:55:54 -04:00
|
|
|
}
|
|
|
|
return summary;
|
|
|
|
}
|
|
|
|
|
2011-06-28 00:04:00 -04:00
|
|
|
static int init_gpgme(alpm_handle_t *handle)
|
2008-12-07 12:58:24 -05:00
|
|
|
{
|
|
|
|
static int init = 0;
|
2011-06-14 11:15:43 -04:00
|
|
|
const char *version, *sigdir;
|
2008-12-07 12:58:24 -05:00
|
|
|
gpgme_error_t err;
|
|
|
|
gpgme_engine_info_t enginfo;
|
|
|
|
|
|
|
|
if(init) {
|
|
|
|
/* we already successfully initialized the library */
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-06-15 13:02:29 -04:00
|
|
|
sigdir = alpm_option_get_gpgdir(handle);
|
2008-12-07 12:58:24 -05:00
|
|
|
|
2011-07-06 11:24:19 -04:00
|
|
|
if (_alpm_access(handle, sigdir, "pubring.gpg", R_OK)
|
|
|
|
|| _alpm_access(handle, sigdir, "trustdb.gpg", R_OK)) {
|
|
|
|
handle->pm_errno = ALPM_ERR_NOT_A_FILE;
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "Signature verification will fail!\n");
|
|
|
|
}
|
|
|
|
|
2008-12-07 12:58:24 -05:00
|
|
|
/* calling gpgme_check_version() returns the current version and runs
|
|
|
|
* some internal library setup code */
|
|
|
|
version = gpgme_check_version(NULL);
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "GPGME version: %s\n", version);
|
2008-12-07 12:58:24 -05:00
|
|
|
gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
|
|
|
|
#ifdef LC_MESSAGES
|
|
|
|
gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
|
|
|
|
#endif
|
|
|
|
/* NOTE:
|
|
|
|
* The GPGME library installs a SIGPIPE signal handler automatically if
|
|
|
|
* the default signal hander is in use. The only time we set a handler
|
|
|
|
* for SIGPIPE is in dload.c, and we reset it when we are done. Given that
|
|
|
|
* we do this, we can let GPGME do its automagic. However, if we install
|
|
|
|
* a library-wide SIGPIPE handler, we will have to be careful.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* check for OpenPGP support (should be a no-brainer, but be safe) */
|
|
|
|
err = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
|
|
|
|
CHECK_ERR();
|
|
|
|
|
|
|
|
/* set and check engine information */
|
2011-06-14 11:15:43 -04:00
|
|
|
err = gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP, NULL, sigdir);
|
2008-12-07 12:58:24 -05:00
|
|
|
CHECK_ERR();
|
|
|
|
err = gpgme_get_engine_info(&enginfo);
|
|
|
|
CHECK_ERR();
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "GPGME engine info: file=%s, home=%s\n",
|
2008-12-07 12:58:24 -05:00
|
|
|
enginfo->file_name, enginfo->home_dir);
|
|
|
|
|
|
|
|
init = 1;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error:
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_ERROR, _("GPGME error: %s\n"), gpgme_strerror(err));
|
2011-07-01 12:01:39 -04:00
|
|
|
RET_ERR(handle, ALPM_ERR_GPGME, 1);
|
2008-12-07 12:58:24 -05:00
|
|
|
}
|
|
|
|
|
2011-04-21 20:25:44 -04:00
|
|
|
/**
|
|
|
|
* Decode a loaded signature in base64 form.
|
|
|
|
* @param base64_data the signature to attempt to decode
|
|
|
|
* @param data the decoded data; must be freed by the caller
|
|
|
|
* @param data_len the length of the returned data
|
|
|
|
* @return 0 on success, 1 on failure to properly decode
|
|
|
|
*/
|
|
|
|
static int decode_signature(const char *base64_data,
|
2011-08-14 21:39:43 -04:00
|
|
|
unsigned char **data, size_t *data_len) {
|
2011-08-14 21:47:08 -04:00
|
|
|
size_t len = strlen(base64_data);
|
|
|
|
unsigned char *usline = (unsigned char *)base64_data;
|
|
|
|
/* reasonable allocation of expected length is 3/4 of encoded length */
|
|
|
|
size_t destlen = len * 3 / 4;
|
2011-08-14 21:39:43 -04:00
|
|
|
MALLOC(*data, destlen, goto error);
|
2011-08-14 21:47:08 -04:00
|
|
|
if(base64_decode(*data, &destlen, usline, len)) {
|
2011-04-21 20:25:44 -04:00
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
*data_len = destlen;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error:
|
|
|
|
*data = NULL;
|
|
|
|
*data_len = 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2011-08-15 09:56:58 -04:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Form a signature path given a file path.
|
|
|
|
* Caller must free the result.
|
|
|
|
* @param handle the context handle
|
|
|
|
* @param path the full path to a file
|
|
|
|
* @return the path with '.sig' appended, NULL on errors
|
|
|
|
*/
|
|
|
|
char *_alpm_sigpath(alpm_handle_t *handle, const char *path)
|
|
|
|
{
|
|
|
|
char *sigpath;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
if(!path) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
len = strlen(path) + 5;
|
|
|
|
CALLOC(sigpath, len, sizeof(char), RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
|
|
|
|
sprintf(sigpath, "%s.sig", path);
|
|
|
|
return sigpath;
|
|
|
|
}
|
|
|
|
|
2008-12-07 12:58:24 -05:00
|
|
|
/**
|
2011-06-14 11:15:43 -04:00
|
|
|
* Check the PGP signature for the given file path.
|
|
|
|
* If base64_sig is provided, it will be used as the signature data after
|
|
|
|
* decoding. If base64_sig is NULL, expect a signature file next to path
|
2011-06-27 17:29:49 -04:00
|
|
|
* (e.g. "%s.sig").
|
|
|
|
*
|
|
|
|
* The return value will be 0 if nothing abnormal happened during the signature
|
|
|
|
* check, and -1 if an error occurred while checking signatures or if a
|
|
|
|
* signature could not be found; pm_errno will be set. Note that "abnormal"
|
|
|
|
* does not include a failed signature; the value in #result should be checked
|
|
|
|
* to determine if the signature(s) are good.
|
2011-06-07 14:15:43 -04:00
|
|
|
* @param handle the context handle
|
2010-11-22 00:06:09 -05:00
|
|
|
* @param path the full path to a file
|
2011-06-14 11:15:43 -04:00
|
|
|
* @param base64_sig optional PGP signature data in base64 encoding
|
2011-06-27 17:29:49 -04:00
|
|
|
* @result
|
|
|
|
* @return 0 in normal cases, -1 if the something failed in the check process
|
2008-12-07 12:58:24 -05:00
|
|
|
*/
|
2011-06-28 00:04:00 -04:00
|
|
|
int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
|
2011-06-27 17:29:49 -04:00
|
|
|
const char *base64_sig, alpm_sigresult_t *result)
|
2008-12-07 12:58:24 -05:00
|
|
|
{
|
2011-06-27 17:29:49 -04:00
|
|
|
int ret = -1, sigcount;
|
2008-12-07 12:58:24 -05:00
|
|
|
gpgme_error_t err;
|
|
|
|
gpgme_ctx_t ctx;
|
2010-11-22 00:06:09 -05:00
|
|
|
gpgme_data_t filedata, sigdata;
|
2011-06-27 17:29:49 -04:00
|
|
|
gpgme_verify_result_t verify_result;
|
2008-12-07 12:58:24 -05:00
|
|
|
gpgme_signature_t gpgsig;
|
2011-04-21 20:01:06 -04:00
|
|
|
char *sigpath = NULL;
|
2011-04-21 20:25:44 -04:00
|
|
|
unsigned char *decoded_sigdata = NULL;
|
2010-11-22 00:06:09 -05:00
|
|
|
FILE *file = NULL, *sigfile = NULL;
|
2008-12-07 12:58:24 -05:00
|
|
|
|
2011-07-06 12:26:56 -04:00
|
|
|
if(!path || _alpm_access(handle, NULL, path, R_OK) != 0) {
|
2011-07-01 12:01:39 -04:00
|
|
|
RET_ERR(handle, ALPM_ERR_NOT_A_FILE, -1);
|
2008-12-07 12:58:24 -05:00
|
|
|
}
|
2011-04-21 20:01:06 -04:00
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
if(!result) {
|
|
|
|
RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1);
|
|
|
|
}
|
|
|
|
result->count = 0;
|
|
|
|
|
2011-04-21 20:25:44 -04:00
|
|
|
if(!base64_sig) {
|
2011-08-15 09:56:58 -04:00
|
|
|
sigpath = _alpm_sigpath(handle, path);
|
|
|
|
/* this will just help debugging */
|
|
|
|
_alpm_access(handle, NULL, sigpath, R_OK);
|
2011-04-21 20:01:06 -04:00
|
|
|
}
|
|
|
|
|
2011-06-14 11:15:43 -04:00
|
|
|
if(init_gpgme(handle)) {
|
2008-12-07 12:58:24 -05:00
|
|
|
/* pm_errno was set in gpgme_init() */
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "checking signature for %s\n", path);
|
2008-12-07 12:58:24 -05:00
|
|
|
|
|
|
|
memset(&ctx, 0, sizeof(ctx));
|
|
|
|
memset(&sigdata, 0, sizeof(sigdata));
|
2010-11-22 00:06:09 -05:00
|
|
|
memset(&filedata, 0, sizeof(filedata));
|
2008-12-07 12:58:24 -05:00
|
|
|
|
|
|
|
err = gpgme_new(&ctx);
|
|
|
|
CHECK_ERR();
|
|
|
|
|
|
|
|
/* create our necessary data objects to verify the signature */
|
2010-11-22 00:06:09 -05:00
|
|
|
file = fopen(path, "rb");
|
|
|
|
if(file == NULL) {
|
2011-07-01 12:01:39 -04:00
|
|
|
handle->pm_errno = ALPM_ERR_NOT_A_FILE;
|
2008-12-07 12:58:24 -05:00
|
|
|
goto error;
|
|
|
|
}
|
2010-11-22 00:06:09 -05:00
|
|
|
err = gpgme_data_new_from_stream(&filedata, file);
|
2008-12-07 12:58:24 -05:00
|
|
|
CHECK_ERR();
|
|
|
|
|
|
|
|
/* next create data object for the signature */
|
2011-04-21 20:25:44 -04:00
|
|
|
if(base64_sig) {
|
2011-04-21 20:01:06 -04:00
|
|
|
/* memory-based, we loaded it from a sync DB */
|
2011-08-14 21:39:43 -04:00
|
|
|
size_t data_len;
|
2011-04-21 20:25:44 -04:00
|
|
|
int decode_ret = decode_signature(base64_sig,
|
|
|
|
&decoded_sigdata, &data_len);
|
|
|
|
if(decode_ret) {
|
2011-06-27 17:29:49 -04:00
|
|
|
handle->pm_errno = ALPM_ERR_SIG_INVALID;
|
2011-04-21 20:25:44 -04:00
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
err = gpgme_data_new_from_mem(&sigdata,
|
|
|
|
(char *)decoded_sigdata, data_len, 0);
|
2011-04-21 20:01:06 -04:00
|
|
|
} else {
|
|
|
|
/* file-based, it is on disk */
|
|
|
|
sigfile = fopen(sigpath, "rb");
|
|
|
|
if(sigfile == NULL) {
|
2011-08-15 09:56:58 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "sig path %s could not be opened\n",
|
|
|
|
sigpath);
|
2011-06-27 17:29:49 -04:00
|
|
|
handle->pm_errno = ALPM_ERR_SIG_MISSING;
|
2011-04-21 20:01:06 -04:00
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
err = gpgme_data_new_from_stream(&sigdata, sigfile);
|
|
|
|
}
|
2008-12-07 12:58:24 -05:00
|
|
|
CHECK_ERR();
|
|
|
|
|
|
|
|
/* here's where the magic happens */
|
2010-11-22 00:06:09 -05:00
|
|
|
err = gpgme_op_verify(ctx, sigdata, filedata, NULL);
|
2008-12-07 12:58:24 -05:00
|
|
|
CHECK_ERR();
|
2011-06-27 17:29:49 -04:00
|
|
|
verify_result = gpgme_op_verify_result(ctx);
|
|
|
|
CHECK_ERR();
|
|
|
|
if(!verify_result || !verify_result->signatures) {
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "no signatures returned\n");
|
2011-06-27 17:29:49 -04:00
|
|
|
handle->pm_errno = ALPM_ERR_SIG_MISSING;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
for(gpgsig = verify_result->signatures, sigcount = 0;
|
|
|
|
gpgsig; gpgsig = gpgsig->next, sigcount++);
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "%d signatures returned\n", sigcount);
|
|
|
|
|
|
|
|
result->status = calloc(sigcount, sizeof(alpm_sigstatus_t));
|
2011-07-22 11:48:13 -04:00
|
|
|
result->validity = calloc(sigcount, sizeof(alpm_sigvalidity_t));
|
2011-06-27 17:29:49 -04:00
|
|
|
result->uid = calloc(sigcount, sizeof(char*));
|
2011-07-22 11:48:13 -04:00
|
|
|
if(!result->status || !result->validity || !result->uid) {
|
2011-06-27 17:29:49 -04:00
|
|
|
handle->pm_errno = ALPM_ERR_MEMORY;
|
2008-12-07 12:58:24 -05:00
|
|
|
goto error;
|
|
|
|
}
|
2011-06-27 17:29:49 -04:00
|
|
|
result->count = sigcount;
|
2011-04-22 16:55:54 -04:00
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
for(gpgsig = verify_result->signatures, sigcount = 0; gpgsig;
|
|
|
|
gpgsig = gpgsig->next, sigcount++) {
|
2011-04-22 16:55:54 -04:00
|
|
|
alpm_list_t *summary_list, *summary;
|
2011-06-27 17:29:49 -04:00
|
|
|
alpm_sigstatus_t status;
|
2011-07-22 11:48:13 -04:00
|
|
|
alpm_sigvalidity_t validity;
|
2011-07-01 17:50:32 -04:00
|
|
|
gpgme_key_t key;
|
2011-04-22 16:55:54 -04:00
|
|
|
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "fingerprint: %s\n", gpgsig->fpr);
|
2011-06-14 11:15:43 -04:00
|
|
|
summary_list = list_sigsum(gpgsig->summary);
|
2011-04-22 16:55:54 -04:00
|
|
|
for(summary = summary_list; summary; summary = summary->next) {
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "summary: %s\n", (const char *)summary->data);
|
2011-04-22 16:55:54 -04:00
|
|
|
}
|
2011-05-04 16:42:50 -04:00
|
|
|
alpm_list_free(summary_list);
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "status: %s\n", gpgme_strerror(gpgsig->status));
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "timestamp: %lu\n", gpgsig->timestamp);
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "exp_timestamp: %lu\n", gpgsig->exp_timestamp);
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "validity: %s; reason: %s\n",
|
2011-04-29 19:25:44 -04:00
|
|
|
string_validity(gpgsig->validity),
|
2011-04-22 16:55:54 -04:00
|
|
|
gpgme_strerror(gpgsig->validity_reason));
|
2008-12-07 12:58:24 -05:00
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
err = gpgme_get_key(ctx, gpgsig->fpr, &key, 0);
|
|
|
|
if(gpg_err_code(err) == GPG_ERR_EOF) {
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "key lookup failed, unknown key\n");
|
|
|
|
err = GPG_ERR_NO_ERROR;
|
2011-07-22 11:48:13 -04:00
|
|
|
STRDUP(result->uid[sigcount], gpgsig->fpr,
|
|
|
|
handle->pm_errno = ALPM_ERR_MEMORY; goto error);
|
2011-06-27 17:29:49 -04:00
|
|
|
} else {
|
|
|
|
CHECK_ERR();
|
|
|
|
if(key->uids) {
|
|
|
|
const char *uid = key->uids->uid;
|
|
|
|
STRDUP(result->uid[sigcount], uid,
|
|
|
|
handle->pm_errno = ALPM_ERR_MEMORY; goto error);
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "key user: %s\n", uid);
|
|
|
|
}
|
|
|
|
gpgme_key_unref(key);
|
|
|
|
}
|
|
|
|
|
2011-07-22 11:48:13 -04:00
|
|
|
switch(gpg_err_code(gpgsig->status)) {
|
|
|
|
/* good cases */
|
|
|
|
case GPG_ERR_NO_ERROR:
|
|
|
|
status = ALPM_SIGSTATUS_VALID;
|
|
|
|
break;
|
|
|
|
case GPG_ERR_KEY_EXPIRED:
|
|
|
|
status = ALPM_SIGSTATUS_KEY_EXPIRED;
|
|
|
|
break;
|
|
|
|
/* bad cases */
|
|
|
|
case GPG_ERR_SIG_EXPIRED:
|
|
|
|
status = ALPM_SIGSTATUS_SIG_EXPIRED;
|
|
|
|
break;
|
|
|
|
case GPG_ERR_NO_PUBKEY:
|
|
|
|
status = ALPM_SIGSTATUS_KEY_UNKNOWN;
|
|
|
|
break;
|
|
|
|
case GPG_ERR_BAD_SIGNATURE:
|
|
|
|
default:
|
|
|
|
status = ALPM_SIGSTATUS_INVALID;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(status == ALPM_SIGSTATUS_VALID
|
|
|
|
|| status == ALPM_SIGSTATUS_KEY_EXPIRED) {
|
|
|
|
switch(gpgsig->validity) {
|
|
|
|
case GPGME_VALIDITY_ULTIMATE:
|
|
|
|
case GPGME_VALIDITY_FULL:
|
|
|
|
validity = ALPM_SIGVALIDITY_FULL;
|
|
|
|
break;
|
|
|
|
case GPGME_VALIDITY_MARGINAL:
|
|
|
|
validity = ALPM_SIGVALIDITY_MARGINAL;
|
|
|
|
break;
|
|
|
|
case GPGME_VALIDITY_NEVER:
|
|
|
|
validity = ALPM_SIGVALIDITY_NEVER;
|
|
|
|
break;
|
|
|
|
case GPGME_VALIDITY_UNKNOWN:
|
|
|
|
case GPGME_VALIDITY_UNDEFINED:
|
|
|
|
default:
|
|
|
|
validity = ALPM_SIGVALIDITY_UNKNOWN;
|
|
|
|
break;
|
|
|
|
}
|
2011-04-29 19:25:44 -04:00
|
|
|
} else {
|
2011-07-22 11:48:13 -04:00
|
|
|
validity = ALPM_SIGVALIDITY_NEVER;
|
2011-04-29 19:25:44 -04:00
|
|
|
}
|
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
result->status[sigcount] = status;
|
2011-07-22 11:48:13 -04:00
|
|
|
result->validity[sigcount] = validity;
|
2008-12-07 12:58:24 -05:00
|
|
|
}
|
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
ret = 0;
|
|
|
|
|
2008-12-07 12:58:24 -05:00
|
|
|
error:
|
|
|
|
gpgme_data_release(sigdata);
|
2010-11-22 00:06:09 -05:00
|
|
|
gpgme_data_release(filedata);
|
2008-12-07 12:58:24 -05:00
|
|
|
gpgme_release(ctx);
|
|
|
|
if(sigfile) {
|
|
|
|
fclose(sigfile);
|
|
|
|
}
|
2010-11-22 00:06:09 -05:00
|
|
|
if(file) {
|
|
|
|
fclose(file);
|
2008-12-07 12:58:24 -05:00
|
|
|
}
|
2011-04-21 20:01:06 -04:00
|
|
|
FREE(sigpath);
|
2011-04-21 20:25:44 -04:00
|
|
|
FREE(decoded_sigdata);
|
2011-07-01 16:51:21 -04:00
|
|
|
if(gpg_err_code(err) != GPG_ERR_NO_ERROR) {
|
2011-07-01 12:01:38 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_ERROR, _("GPGME error: %s\n"), gpgme_strerror(err));
|
2011-07-01 12:01:39 -04:00
|
|
|
RET_ERR(handle, ALPM_ERR_GPGME, -1);
|
2008-12-07 12:58:24 -05:00
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
2011-04-24 12:40:58 -04:00
|
|
|
#else
|
2011-07-16 11:48:47 -04:00
|
|
|
int _alpm_gpgme_checksig(alpm_handle_t UNUSED *handle, const char UNUSED *path,
|
|
|
|
const char UNUSED *base64_sig, alpm_sigresult_t UNUSED *result)
|
2011-04-24 12:40:58 -04:00
|
|
|
{
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
#endif
|
2008-12-07 12:58:24 -05:00
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
int _alpm_check_pgp_helper(alpm_handle_t *handle, const char *path,
|
|
|
|
const char *base64_sig, int optional, int marginal, int unknown,
|
|
|
|
enum _alpm_errno_t invalid_err)
|
|
|
|
{
|
|
|
|
alpm_sigresult_t result;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
memset(&result, 0, sizeof(result));
|
|
|
|
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "checking signatures for %s\n", path);
|
|
|
|
ret = _alpm_gpgme_checksig(handle, path, base64_sig, &result);
|
|
|
|
if(ret && handle->pm_errno == ALPM_ERR_SIG_MISSING) {
|
|
|
|
if(optional) {
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "missing optional signature\n");
|
|
|
|
handle->pm_errno = 0;
|
|
|
|
ret = 0;
|
|
|
|
} else {
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "missing required signature\n");
|
|
|
|
/* ret will already be -1 */
|
|
|
|
}
|
|
|
|
} else if(ret) {
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature check failed\n");
|
|
|
|
/* ret will already be -1 */
|
|
|
|
} else {
|
|
|
|
int num;
|
2011-07-22 11:48:13 -04:00
|
|
|
for(num = 0; !ret && num < result.count; num++) {
|
2011-06-27 17:29:49 -04:00
|
|
|
switch(result.status[num]) {
|
|
|
|
case ALPM_SIGSTATUS_VALID:
|
2011-07-22 11:48:13 -04:00
|
|
|
case ALPM_SIGSTATUS_KEY_EXPIRED:
|
2011-06-27 17:29:49 -04:00
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature is valid\n");
|
2011-07-22 11:48:13 -04:00
|
|
|
switch(result.validity[num]) {
|
|
|
|
case ALPM_SIGVALIDITY_FULL:
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature is fully trusted\n");
|
|
|
|
break;
|
|
|
|
case ALPM_SIGVALIDITY_MARGINAL:
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature is marginal trust\n");
|
|
|
|
if(!marginal) {
|
|
|
|
ret = -1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case ALPM_SIGVALIDITY_UNKNOWN:
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature is unknown trust\n");
|
|
|
|
if(!unknown) {
|
|
|
|
ret = -1;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case ALPM_SIGVALIDITY_NEVER:
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature should never be trusted\n");
|
|
|
|
ret = -1;
|
|
|
|
break;
|
2011-06-27 17:29:49 -04:00
|
|
|
}
|
2011-07-22 11:48:13 -04:00
|
|
|
break;
|
|
|
|
case ALPM_SIGSTATUS_SIG_EXPIRED:
|
|
|
|
case ALPM_SIGSTATUS_KEY_UNKNOWN:
|
|
|
|
case ALPM_SIGSTATUS_INVALID:
|
|
|
|
_alpm_log(handle, ALPM_LOG_DEBUG, "signature is not valid\n");
|
2011-06-27 17:29:49 -04:00
|
|
|
ret = -1;
|
2011-07-22 11:48:13 -04:00
|
|
|
break;
|
2011-06-27 17:29:49 -04:00
|
|
|
}
|
|
|
|
}
|
2011-07-22 11:48:13 -04:00
|
|
|
|
|
|
|
if(ret) {
|
|
|
|
handle->pm_errno = invalid_err;
|
|
|
|
}
|
2011-06-27 17:29:49 -04:00
|
|
|
}
|
|
|
|
|
2011-07-01 17:50:32 -04:00
|
|
|
alpm_sigresult_cleanup(&result);
|
2011-06-27 17:29:49 -04:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2008-12-07 12:58:24 -05:00
|
|
|
/**
|
2011-04-21 20:01:06 -04:00
|
|
|
* Check the PGP signature for the given package file.
|
2008-12-07 12:58:24 -05:00
|
|
|
* @param pkg the package to check
|
2011-03-25 21:40:16 -04:00
|
|
|
* @return a int value : 0 (valid), 1 (invalid), -1 (an error occurred)
|
2008-12-07 12:58:24 -05:00
|
|
|
*/
|
2011-06-27 17:29:49 -04:00
|
|
|
int SYMEXPORT alpm_pkg_check_pgp_signature(alpm_pkg_t *pkg,
|
|
|
|
alpm_sigresult_t *result)
|
2008-12-07 12:58:24 -05:00
|
|
|
{
|
2011-06-14 11:15:43 -04:00
|
|
|
ASSERT(pkg != NULL, return -1);
|
2011-06-27 17:29:49 -04:00
|
|
|
ASSERT(result != NULL, RET_ERR(pkg->handle, ALPM_ERR_WRONG_ARGS, -1));
|
2011-06-14 11:01:08 -04:00
|
|
|
pkg->handle->pm_errno = 0;
|
2008-12-07 12:58:24 -05:00
|
|
|
|
2011-06-07 14:15:43 -04:00
|
|
|
return _alpm_gpgme_checksig(pkg->handle, alpm_pkg_get_filename(pkg),
|
2011-06-27 17:29:49 -04:00
|
|
|
pkg->base64_sig, result);
|
2008-12-07 12:58:24 -05:00
|
|
|
}
|
|
|
|
|
2010-11-22 00:06:09 -05:00
|
|
|
/**
|
2011-04-21 20:01:06 -04:00
|
|
|
* Check the PGP signature for the given database.
|
2010-11-22 00:06:09 -05:00
|
|
|
* @param db the database to check
|
2011-03-25 21:40:16 -04:00
|
|
|
* @return a int value : 0 (valid), 1 (invalid), -1 (an error occurred)
|
2010-11-22 00:06:09 -05:00
|
|
|
*/
|
2011-06-27 17:29:49 -04:00
|
|
|
int SYMEXPORT alpm_db_check_pgp_signature(alpm_db_t *db,
|
|
|
|
alpm_sigresult_t *result)
|
2010-11-22 00:06:09 -05:00
|
|
|
{
|
2011-06-14 11:15:43 -04:00
|
|
|
ASSERT(db != NULL, return -1);
|
2011-06-27 17:29:49 -04:00
|
|
|
ASSERT(result != NULL, RET_ERR(db->handle, ALPM_ERR_WRONG_ARGS, -1));
|
2011-06-14 11:01:08 -04:00
|
|
|
db->handle->pm_errno = 0;
|
2010-11-22 00:06:09 -05:00
|
|
|
|
2011-06-27 17:29:49 -04:00
|
|
|
return _alpm_gpgme_checksig(db->handle, _alpm_db_path(db), NULL, result);
|
2010-11-22 00:06:09 -05:00
|
|
|
}
|
|
|
|
|
2011-07-01 17:50:32 -04:00
|
|
|
int SYMEXPORT alpm_sigresult_cleanup(alpm_sigresult_t *result)
|
|
|
|
{
|
|
|
|
ASSERT(result != NULL, return -1);
|
|
|
|
/* Because it is likely result is on the stack, uid and status may have bogus
|
|
|
|
* values in the struct. Only look at them if count is greater than 0. */
|
|
|
|
if(result->count > 0) {
|
|
|
|
free(result->status);
|
|
|
|
if(result->uid) {
|
|
|
|
int i;
|
|
|
|
for(i = 0; i < result->count; i++) {
|
|
|
|
free(result->uid[i]);
|
|
|
|
}
|
|
|
|
free(result->uid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-12-07 12:58:24 -05:00
|
|
|
/* vim: set ts=2 sw=2 noet: */
|