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/*
* Ouroboros - Copyright (C) 2016 - 2024
*
* OAP - Shared credential and configuration loading
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#if defined(__linux__) || defined(__CYGWIN__)
#define _DEFAULT_SOURCE
#else
#define _POSIX_C_SOURCE 200809L
#endif
#define OUROBOROS_PREFIX "irmd/oap"
#include <ouroboros/crypt.h>
#include <ouroboros/errno.h>
#include <ouroboros/logs.h>
#include "config.h"
#include <assert.h>
#include <string.h>
#include <sys/stat.h>
/*
* Shared credential and configuration loading helpers
*/
#ifndef OAP_TEST_MODE
static bool file_exists(const char * path)
{
struct stat s;
if (stat(path, &s) < 0 && errno == ENOENT) {
log_dbg("File %s does not exist.", path);
return false;
}
return true;
}
int load_credentials(const char * name,
const struct name_sec_paths * paths,
void ** pkp,
void ** crt)
{
assert(paths != NULL);
assert(pkp != NULL);
assert(crt != NULL);
*pkp = NULL;
*crt = NULL;
if (!file_exists(paths->crt) || !file_exists(paths->key)) {
log_info("No authentication certificates for %s.", name);
return 0;
}
if (crypt_load_crt_file(paths->crt, crt) < 0) {
log_err("Failed to load %s for %s.", paths->crt, name);
goto fail_crt;
}
if (crypt_load_privkey_file(paths->key, pkp) < 0) {
log_err("Failed to load %s for %s.", paths->key, name);
goto fail_key;
}
log_info("Loaded authentication certificates for %s.", name);
return 0;
fail_key:
crypt_free_crt(*crt);
*crt = NULL;
fail_crt:
return -EAUTH;
}
int load_kex_config(const char * name,
const char * path,
struct sec_config * cfg)
{
assert(name != NULL);
assert(cfg != NULL);
memset(cfg, 0, sizeof(*cfg));
/* Load encryption config */
if (!file_exists(path))
log_dbg("No encryption %s for %s.", path, name);
if (load_sec_config_file(cfg, path) < 0) {
log_warn("Failed to load %s for %s.", path, name);
return -1;
}
if (!IS_KEX_ALGO_SET(cfg)) {
log_info("Key exchange not configured for %s.", name);
return 0;
}
if (cfg->c.nid == NID_undef || crypt_nid_to_str(cfg->c.nid) == NULL) {
log_err("Invalid cipher NID %d for %s.", cfg->c.nid, name);
return -ECRYPT;
}
log_info("Encryption enabled for %s.", name);
return 0;
}
#endif /* OAP_TEST_MODE */
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