1192 lines
28 KiB
C
1192 lines
28 KiB
C
/*
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* Copyright (C) 2008-2012 Tobias Brunner
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* Copyright (C) 2008 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include <libgen.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#ifdef HAVE_GLOB_H
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#include <glob.h>
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#endif
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#include "stroke_cred.h"
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#include <credentials/certificates/x509.h>
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#include <credentials/certificates/crl.h>
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#include <credentials/certificates/ac.h>
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#include <credentials/sets/mem_cred.h>
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#include <credentials/sets/callback_cred.h>
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#include <utils/linked_list.h>
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#include <utils/lexparser.h>
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#include <threading/rwlock.h>
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#include <daemon.h>
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/* configuration directories and files */
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#define CONFIG_DIR IPSEC_CONFDIR
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#define IPSEC_D_DIR CONFIG_DIR "/ipsec.d"
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#define PRIVATE_KEY_DIR IPSEC_D_DIR "/private"
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#define CERTIFICATE_DIR IPSEC_D_DIR "/certs"
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#define CA_CERTIFICATE_DIR IPSEC_D_DIR "/cacerts"
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#define AA_CERTIFICATE_DIR IPSEC_D_DIR "/aacerts"
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#define ATTR_CERTIFICATE_DIR IPSEC_D_DIR "/acerts"
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#define OCSP_CERTIFICATE_DIR IPSEC_D_DIR "/ocspcerts"
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#define CRL_DIR IPSEC_D_DIR "/crls"
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#define SECRETS_FILE CONFIG_DIR "/ipsec.secrets"
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#define MAX_SECRETS_RECURSION 10
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typedef struct private_stroke_cred_t private_stroke_cred_t;
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/**
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* private data of stroke_cred
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*/
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struct private_stroke_cred_t {
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/**
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* public functions
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*/
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stroke_cred_t public;
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/**
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* credentials
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*/
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mem_cred_t *creds;
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/**
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* ignore missing CA basic constraint (i.e. treat all certificates in
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* ipsec.conf ca sections and ipsec.d/cacert as CA certificates)
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*/
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bool force_ca_cert;
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/**
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* cache CRLs to disk?
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*/
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bool cachecrl;
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};
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METHOD(stroke_cred_t, load_ca, certificate_t*,
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private_stroke_cred_t *this, char *filename)
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{
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certificate_t *cert;
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char path[PATH_MAX];
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if (*filename == '/')
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{
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snprintf(path, sizeof(path), "%s", filename);
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}
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else
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{
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snprintf(path, sizeof(path), "%s/%s", CA_CERTIFICATE_DIR, filename);
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}
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if (this->force_ca_cert)
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{ /* we treat this certificate as a CA certificate even if it has no
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* CA basic constraint */
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509,
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BUILD_FROM_FILE, path, BUILD_X509_FLAG, X509_CA,
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BUILD_END);
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}
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else
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{
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509,
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BUILD_FROM_FILE, path,
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BUILD_END);
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}
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if (cert)
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{
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x509_t *x509 = (x509_t*)cert;
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if (!(x509->get_flags(x509) & X509_CA))
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{
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DBG1(DBG_CFG, " ca certificate \"%Y\" misses ca basic constraint, "
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"discarded", cert->get_subject(cert));
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cert->destroy(cert);
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return NULL;
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}
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return this->creds->add_cert_ref(this->creds, TRUE, cert);
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}
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return NULL;
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}
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METHOD(stroke_cred_t, load_peer, certificate_t*,
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private_stroke_cred_t *this, char *filename)
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{
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certificate_t *cert;
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char path[PATH_MAX];
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if (*filename == '/')
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{
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snprintf(path, sizeof(path), "%s", filename);
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}
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else
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{
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snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename);
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}
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_ANY,
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BUILD_FROM_FILE, path,
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BUILD_END);
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if (cert)
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{
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cert = this->creds->add_cert_ref(this->creds, TRUE, cert);
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DBG1(DBG_CFG, " loaded certificate \"%Y\" from '%s'",
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cert->get_subject(cert), filename);
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return cert;
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}
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DBG1(DBG_CFG, " loading certificate from '%s' failed", filename);
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return NULL;
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}
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METHOD(stroke_cred_t, load_pubkey, certificate_t*,
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private_stroke_cred_t *this, key_type_t type, char *filename,
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identification_t *identity)
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{
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certificate_t *cert;
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char path[PATH_MAX];
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if (streq(filename, "%dns"))
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{
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}
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else if (strncaseeq(filename, "0x", 2) || strncaseeq(filename, "0s", 2))
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{
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chunk_t printable_key, rfc3110_key;
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public_key_t *key;
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printable_key = chunk_create(filename + 2, strlen(filename) - 2);
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rfc3110_key = strncaseeq(filename, "0x", 2) ?
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chunk_from_hex(printable_key, NULL) :
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chunk_from_base64(printable_key, NULL);
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key = lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_RSA,
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BUILD_BLOB_DNSKEY, rfc3110_key,
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BUILD_END);
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free(rfc3110_key.ptr);
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if (key)
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{
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cert = lib->creds->create(lib->creds, CRED_CERTIFICATE,
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CERT_TRUSTED_PUBKEY,
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BUILD_PUBLIC_KEY, key,
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BUILD_SUBJECT, identity,
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BUILD_END);
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key->destroy(key);
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if (cert)
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{
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cert = this->creds->add_cert_ref(this->creds, TRUE, cert);
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DBG1(DBG_CFG, " loaded %N public key for \"%Y\"",
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key_type_names, type, identity);
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return cert;
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}
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}
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DBG1(DBG_CFG, " loading %N public key for \"%Y\" failed",
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key_type_names, type, identity);
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}
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else
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{
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if (*filename == '/')
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{
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snprintf(path, sizeof(path), "%s", filename);
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}
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else
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{
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snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename);
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}
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_TRUSTED_PUBKEY,
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BUILD_FROM_FILE, path,
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BUILD_SUBJECT, identity,
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BUILD_END);
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if (cert)
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{
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cert = this->creds->add_cert_ref(this->creds, TRUE, cert);
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DBG1(DBG_CFG, " loaded %N public key for \"%Y\" from '%s'",
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key_type_names, type, identity, filename);
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return cert;
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}
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DBG1(DBG_CFG, " loading %N public key for \"%Y\" from '%s' failed",
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key_type_names, type, identity, filename);
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}
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return NULL;
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}
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/**
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* load trusted certificates from a directory
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*/
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static void load_certdir(private_stroke_cred_t *this, char *path,
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certificate_type_t type, x509_flag_t flag)
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{
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struct stat st;
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char *file;
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enumerator_t *enumerator = enumerator_create_directory(path);
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if (!enumerator)
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{
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DBG1(DBG_CFG, " reading directory failed");
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return;
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}
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while (enumerator->enumerate(enumerator, NULL, &file, &st))
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{
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certificate_t *cert;
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if (!S_ISREG(st.st_mode))
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{
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/* skip special file */
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continue;
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}
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switch (type)
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{
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case CERT_X509:
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if (flag & X509_CA)
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{
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if (this->force_ca_cert)
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{ /* treat this certificate as CA cert even it has no
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* CA basic constraint */
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509,
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BUILD_FROM_FILE, file, BUILD_X509_FLAG,
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X509_CA, BUILD_END);
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}
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else
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{
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509,
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BUILD_FROM_FILE, file, BUILD_END);
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}
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if (cert)
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{
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x509_t *x509 = (x509_t*)cert;
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if (!(x509->get_flags(x509) & X509_CA))
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{
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DBG1(DBG_CFG, " ca certificate \"%Y\" lacks "
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"ca basic constraint, discarded",
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cert->get_subject(cert));
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cert->destroy(cert);
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cert = NULL;
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}
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else
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{
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DBG1(DBG_CFG, " loaded ca certificate \"%Y\" "
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"from '%s'", cert->get_subject(cert), file);
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}
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}
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else
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{
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DBG1(DBG_CFG, " loading ca certificate from '%s' "
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"failed", file);
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}
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}
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else
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{ /* for all other flags, we add them to the certificate. */
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509,
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BUILD_FROM_FILE, file,
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BUILD_X509_FLAG, flag, BUILD_END);
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if (cert)
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{
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DBG1(DBG_CFG, " loaded certificate \"%Y\" from '%s'",
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cert->get_subject(cert), file);
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}
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else
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{
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DBG1(DBG_CFG, " loading certificate from '%s' "
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"failed", file);
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}
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}
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if (cert)
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{
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this->creds->add_cert(this->creds, TRUE, cert);
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}
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break;
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case CERT_X509_CRL:
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509_CRL,
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BUILD_FROM_FILE, file,
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BUILD_END);
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if (cert)
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{
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this->creds->add_crl(this->creds, (crl_t*)cert);
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DBG1(DBG_CFG, " loaded crl from '%s'", file);
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}
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else
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{
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DBG1(DBG_CFG, " loading crl from '%s' failed", file);
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}
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break;
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case CERT_X509_AC:
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cert = lib->creds->create(lib->creds,
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CRED_CERTIFICATE, CERT_X509_AC,
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BUILD_FROM_FILE, file,
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BUILD_END);
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if (cert)
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{
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this->creds->add_cert(this->creds, FALSE, cert);
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DBG1(DBG_CFG, " loaded attribute certificate from '%s'",
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file);
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}
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else
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{
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DBG1(DBG_CFG, " loading attribute certificate from '%s' "
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"failed", file);
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}
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break;
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default:
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break;
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}
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}
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enumerator->destroy(enumerator);
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}
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METHOD(stroke_cred_t, cache_cert, void,
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private_stroke_cred_t *this, certificate_t *cert)
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{
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if (cert->get_type(cert) == CERT_X509_CRL && this->cachecrl)
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{
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/* CRLs get written to /etc/ipsec.d/crls/<authkeyId>.crl */
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crl_t *crl = (crl_t*)cert;
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cert->get_ref(cert);
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if (this->creds->add_crl(this->creds, crl))
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{
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char buf[BUF_LEN];
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chunk_t chunk, hex;
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chunk = crl->get_authKeyIdentifier(crl);
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hex = chunk_to_hex(chunk, NULL, FALSE);
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snprintf(buf, sizeof(buf), "%s/%s.crl", CRL_DIR, hex.ptr);
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free(hex.ptr);
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if (cert->get_encoding(cert, CERT_ASN1_DER, &chunk))
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{
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chunk_write(chunk, buf, "crl", 022, TRUE);
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free(chunk.ptr);
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}
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}
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}
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}
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METHOD(stroke_cred_t, cachecrl, void,
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private_stroke_cred_t *this, bool enabled)
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{
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DBG1(DBG_CFG, "crl caching to %s %s",
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CRL_DIR, enabled ? "enabled" : "disabled");
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this->cachecrl = enabled;
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}
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/**
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* Convert a string of characters into a binary secret
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* A string between single or double quotes is treated as ASCII characters
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* A string prepended by 0x is treated as HEX and prepended by 0s as Base64
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*/
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static err_t extract_secret(chunk_t *secret, chunk_t *line)
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{
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chunk_t raw_secret;
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char delimiter = ' ';
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bool quotes = FALSE;
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if (!eat_whitespace(line))
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{
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return "missing secret";
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}
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if (*line->ptr == '\'' || *line->ptr == '"')
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{
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quotes = TRUE;
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delimiter = *line->ptr;
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line->ptr++; line->len--;
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}
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if (!extract_token(&raw_secret, delimiter, line))
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{
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if (delimiter == ' ')
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{
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raw_secret = *line;
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}
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else
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{
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return "missing second delimiter";
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}
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}
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if (quotes)
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{
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/* treat as an ASCII string */
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*secret = chunk_clone(raw_secret);
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return NULL;
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}
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/* treat 0x as hex, 0s as base64 */
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if (raw_secret.len > 2)
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{
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if (strncasecmp("0x", raw_secret.ptr, 2) == 0)
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{
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*secret = chunk_from_hex(chunk_skip(raw_secret, 2), NULL);
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return NULL;
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}
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if (strncasecmp("0s", raw_secret.ptr, 2) == 0)
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{
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*secret = chunk_from_base64(chunk_skip(raw_secret, 2), NULL);
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return NULL;
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}
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}
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*secret = chunk_clone(raw_secret);
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return NULL;
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}
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/**
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* Data for passphrase callback
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*/
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typedef struct {
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/** socket we use for prompting */
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FILE *prompt;
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/** private key file */
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char *path;
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/** number of tries */
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int try;
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} passphrase_cb_data_t;
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/**
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* Callback function to receive Passphrases
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*/
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static shared_key_t* passphrase_cb(passphrase_cb_data_t *data,
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shared_key_type_t type,
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identification_t *me, identification_t *other,
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id_match_t *match_me, id_match_t *match_other)
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{
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chunk_t secret;
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char buf[256];
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if (type != SHARED_ANY && type != SHARED_PRIVATE_KEY_PASS)
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{
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return NULL;
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}
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if (data->try > 1)
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{
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if (data->try > 5)
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{
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fprintf(data->prompt, "PIN invalid, giving up.\n");
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return NULL;
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}
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fprintf(data->prompt, "PIN invalid!\n");
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}
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data->try++;
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fprintf(data->prompt, "Private key '%s' is encrypted.\n", data->path);
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fprintf(data->prompt, "Passphrase:\n");
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if (fgets(buf, sizeof(buf), data->prompt))
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{
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secret = chunk_create(buf, strlen(buf));
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if (secret.len > 1)
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{ /* trim appended \n */
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secret.len--;
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if (match_me)
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{
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*match_me = ID_MATCH_PERFECT;
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}
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if (match_other)
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{
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*match_other = ID_MATCH_NONE;
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}
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return shared_key_create(SHARED_PRIVATE_KEY_PASS, chunk_clone(secret));
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}
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}
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return NULL;
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}
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|
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/**
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* Data for PIN callback
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*/
|
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typedef struct {
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/** socket we use for prompting */
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FILE *prompt;
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/** card label */
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char *card;
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/** card keyid */
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chunk_t keyid;
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/** number of tries */
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int try;
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} pin_cb_data_t;
|
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|
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/**
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* Callback function to receive PINs
|
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*/
|
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static shared_key_t* pin_cb(pin_cb_data_t *data, shared_key_type_t type,
|
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identification_t *me, identification_t *other,
|
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id_match_t *match_me, id_match_t *match_other)
|
|
{
|
|
chunk_t secret;
|
|
char buf[256];
|
|
|
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if (type != SHARED_ANY && type != SHARED_PIN)
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{
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return NULL;
|
|
}
|
|
|
|
if (!me || !chunk_equals(me->get_encoding(me), data->keyid))
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
if (data->try > 1)
|
|
{
|
|
fprintf(data->prompt, "PIN invalid, aborting.\n");
|
|
return NULL;
|
|
}
|
|
data->try++;
|
|
fprintf(data->prompt, "Login to '%s' required\n", data->card);
|
|
fprintf(data->prompt, "PIN:\n");
|
|
if (fgets(buf, sizeof(buf), data->prompt))
|
|
{
|
|
secret = chunk_create(buf, strlen(buf));
|
|
if (secret.len > 1)
|
|
{ /* trim appended \n */
|
|
secret.len--;
|
|
if (match_me)
|
|
{
|
|
*match_me = ID_MATCH_PERFECT;
|
|
}
|
|
if (match_other)
|
|
{
|
|
*match_other = ID_MATCH_NONE;
|
|
}
|
|
return shared_key_create(SHARED_PIN, chunk_clone(secret));
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Load a smartcard with a PIN
|
|
*/
|
|
static bool load_pin(private_stroke_cred_t *this, chunk_t line, int line_nr,
|
|
FILE *prompt)
|
|
{
|
|
chunk_t sc = chunk_empty, secret = chunk_empty;
|
|
char smartcard[64], keyid[64], module[64], *pos;
|
|
private_key_t *key = NULL;
|
|
u_int slot;
|
|
chunk_t chunk;
|
|
shared_key_t *shared;
|
|
identification_t *id;
|
|
mem_cred_t *mem = NULL;
|
|
callback_cred_t *cb = NULL;
|
|
pin_cb_data_t pin_data;
|
|
enum {
|
|
SC_FORMAT_SLOT_MODULE_KEYID,
|
|
SC_FORMAT_SLOT_KEYID,
|
|
SC_FORMAT_KEYID,
|
|
} format;
|
|
|
|
err_t ugh = extract_value(&sc, &line);
|
|
|
|
if (ugh != NULL)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
|
|
return FALSE;
|
|
}
|
|
if (sc.len == 0)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: expected %%smartcard specifier", line_nr);
|
|
return FALSE;
|
|
}
|
|
snprintf(smartcard, sizeof(smartcard), "%.*s", (int)sc.len, sc.ptr);
|
|
smartcard[sizeof(smartcard) - 1] = '\0';
|
|
|
|
/* parse slot and key id. Three formats are supported:
|
|
* - %smartcard<slot>@<module>:<keyid>
|
|
* - %smartcard<slot>:<keyid>
|
|
* - %smartcard:<keyid>
|
|
*/
|
|
if (sscanf(smartcard, "%%smartcard%u@%s", &slot, module) == 2)
|
|
{
|
|
pos = strchr(module, ':');
|
|
if (!pos)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: the given %%smartcard specifier is "
|
|
"invalid", line_nr);
|
|
return FALSE;
|
|
}
|
|
*pos = '\0';
|
|
strncpy(keyid, pos + 1, sizeof(keyid));
|
|
format = SC_FORMAT_SLOT_MODULE_KEYID;
|
|
}
|
|
else if (sscanf(smartcard, "%%smartcard%u:%s", &slot, keyid) == 2)
|
|
{
|
|
format = SC_FORMAT_SLOT_KEYID;
|
|
}
|
|
else if (sscanf(smartcard, "%%smartcard:%s", keyid) == 1)
|
|
{
|
|
format = SC_FORMAT_KEYID;
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_CFG, "line %d: the given %%smartcard specifier is not"
|
|
" supported or invalid", line_nr);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!eat_whitespace(&line))
|
|
{
|
|
DBG1(DBG_CFG, "line %d: expected PIN", line_nr);
|
|
return FALSE;
|
|
}
|
|
ugh = extract_secret(&secret, &line);
|
|
if (ugh != NULL)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: malformed PIN: %s", line_nr, ugh);
|
|
return FALSE;
|
|
}
|
|
|
|
chunk = chunk_from_hex(chunk_create(keyid, strlen(keyid)), NULL);
|
|
if (secret.len == 7 && strneq(secret.ptr, "%prompt", 7))
|
|
{
|
|
free(secret.ptr);
|
|
if (!prompt)
|
|
{ /* no IO channel to prompt, skip */
|
|
free(chunk.ptr);
|
|
return TRUE;
|
|
}
|
|
/* use callback credential set to prompt for the pin */
|
|
pin_data.prompt = prompt;
|
|
pin_data.card = smartcard;
|
|
pin_data.keyid = chunk;
|
|
pin_data.try = 1;
|
|
cb = callback_cred_create_shared((void*)pin_cb, &pin_data);
|
|
lib->credmgr->add_local_set(lib->credmgr, &cb->set);
|
|
}
|
|
else
|
|
{
|
|
/* provide our pin in a temporary credential set */
|
|
shared = shared_key_create(SHARED_PIN, secret);
|
|
id = identification_create_from_encoding(ID_KEY_ID, chunk);
|
|
mem = mem_cred_create();
|
|
mem->add_shared(mem, shared, id, NULL);
|
|
lib->credmgr->add_local_set(lib->credmgr, &mem->set);
|
|
}
|
|
|
|
/* unlock: smartcard needs the pin and potentially calls public set */
|
|
switch (format)
|
|
{
|
|
case SC_FORMAT_SLOT_MODULE_KEYID:
|
|
key = lib->creds->create(lib->creds,
|
|
CRED_PRIVATE_KEY, KEY_ANY,
|
|
BUILD_PKCS11_SLOT, slot,
|
|
BUILD_PKCS11_MODULE, module,
|
|
BUILD_PKCS11_KEYID, chunk, BUILD_END);
|
|
break;
|
|
case SC_FORMAT_SLOT_KEYID:
|
|
key = lib->creds->create(lib->creds,
|
|
CRED_PRIVATE_KEY, KEY_ANY,
|
|
BUILD_PKCS11_SLOT, slot,
|
|
BUILD_PKCS11_KEYID, chunk, BUILD_END);
|
|
break;
|
|
case SC_FORMAT_KEYID:
|
|
key = lib->creds->create(lib->creds,
|
|
CRED_PRIVATE_KEY, KEY_ANY,
|
|
BUILD_PKCS11_KEYID, chunk, BUILD_END);
|
|
break;
|
|
}
|
|
if (mem)
|
|
{
|
|
lib->credmgr->remove_local_set(lib->credmgr, &mem->set);
|
|
mem->destroy(mem);
|
|
}
|
|
if (cb)
|
|
{
|
|
lib->credmgr->remove_local_set(lib->credmgr, &cb->set);
|
|
cb->destroy(cb);
|
|
}
|
|
|
|
if (key)
|
|
{
|
|
DBG1(DBG_CFG, " loaded private key from %.*s", sc.len, sc.ptr);
|
|
this->creds->add_key(this->creds, key);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Load a private key
|
|
*/
|
|
static bool load_private(private_stroke_cred_t *this, chunk_t line, int line_nr,
|
|
FILE *prompt, key_type_t key_type)
|
|
{
|
|
char path[PATH_MAX];
|
|
chunk_t filename;
|
|
chunk_t secret = chunk_empty;
|
|
private_key_t *key;
|
|
|
|
err_t ugh = extract_value(&filename, &line);
|
|
|
|
if (ugh != NULL)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
|
|
return FALSE;
|
|
}
|
|
if (filename.len == 0)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: empty filename", line_nr);
|
|
return FALSE;
|
|
}
|
|
if (*filename.ptr == '/')
|
|
{
|
|
/* absolute path name */
|
|
snprintf(path, sizeof(path), "%.*s", (int)filename.len, filename.ptr);
|
|
}
|
|
else
|
|
{
|
|
/* relative path name */
|
|
snprintf(path, sizeof(path), "%s/%.*s", PRIVATE_KEY_DIR,
|
|
(int)filename.len, filename.ptr);
|
|
}
|
|
|
|
/* check for optional passphrase */
|
|
if (eat_whitespace(&line))
|
|
{
|
|
ugh = extract_secret(&secret, &line);
|
|
if (ugh != NULL)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: malformed passphrase: %s", line_nr, ugh);
|
|
return FALSE;
|
|
}
|
|
}
|
|
if (secret.len == 7 && strneq(secret.ptr, "%prompt", 7))
|
|
{
|
|
callback_cred_t *cb = NULL;
|
|
passphrase_cb_data_t pp_data = {
|
|
.prompt = prompt,
|
|
.path = path,
|
|
.try = 1,
|
|
};
|
|
|
|
free(secret.ptr);
|
|
if (!prompt)
|
|
{
|
|
return TRUE;
|
|
}
|
|
/* use callback credential set to prompt for the passphrase */
|
|
pp_data.prompt = prompt;
|
|
pp_data.path = path;
|
|
pp_data.try = 1;
|
|
cb = callback_cred_create_shared((void*)passphrase_cb, &pp_data);
|
|
lib->credmgr->add_local_set(lib->credmgr, &cb->set);
|
|
|
|
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, key_type,
|
|
BUILD_FROM_FILE, path, BUILD_END);
|
|
|
|
lib->credmgr->remove_local_set(lib->credmgr, &cb->set);
|
|
cb->destroy(cb);
|
|
}
|
|
else
|
|
{
|
|
mem_cred_t *mem = NULL;
|
|
shared_key_t *shared;
|
|
|
|
/* provide our pin in a temporary credential set */
|
|
shared = shared_key_create(SHARED_PRIVATE_KEY_PASS, secret);
|
|
mem = mem_cred_create();
|
|
mem->add_shared(mem, shared, NULL);
|
|
lib->credmgr->add_local_set(lib->credmgr, &mem->set);
|
|
|
|
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, key_type,
|
|
BUILD_FROM_FILE, path, BUILD_END);
|
|
|
|
lib->credmgr->remove_local_set(lib->credmgr, &mem->set);
|
|
mem->destroy(mem);
|
|
}
|
|
if (key)
|
|
{
|
|
DBG1(DBG_CFG, " loaded %N private key from '%s'",
|
|
key_type_names, key->get_type(key), path);
|
|
this->creds->add_key(this->creds, key);
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_CFG, " loading private key from '%s' failed", path);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Load a shared key
|
|
*/
|
|
static bool load_shared(private_stroke_cred_t *this, chunk_t line, int line_nr,
|
|
shared_key_type_t type, chunk_t ids)
|
|
{
|
|
shared_key_t *shared_key;
|
|
linked_list_t *owners;
|
|
chunk_t secret = chunk_empty;
|
|
bool any = TRUE;
|
|
|
|
err_t ugh = extract_secret(&secret, &line);
|
|
if (ugh != NULL)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: malformed secret: %s", line_nr, ugh);
|
|
return FALSE;
|
|
}
|
|
shared_key = shared_key_create(type, secret);
|
|
DBG1(DBG_CFG, " loaded %N secret for %s", shared_key_type_names, type,
|
|
ids.len > 0 ? (char*)ids.ptr : "%any");
|
|
DBG4(DBG_CFG, " secret: %#B", &secret);
|
|
|
|
owners = linked_list_create();
|
|
while (ids.len > 0)
|
|
{
|
|
chunk_t id;
|
|
identification_t *peer_id;
|
|
|
|
ugh = extract_value(&id, &ids);
|
|
if (ugh != NULL)
|
|
{
|
|
DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
|
|
shared_key->destroy(shared_key);
|
|
owners->destroy_offset(owners, offsetof(identification_t, destroy));
|
|
return FALSE;
|
|
}
|
|
if (id.len == 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
/* NULL terminate the ID string */
|
|
*(id.ptr + id.len) = '\0';
|
|
peer_id = identification_create_from_string(id.ptr);
|
|
if (peer_id->get_type(peer_id) == ID_ANY)
|
|
{
|
|
peer_id->destroy(peer_id);
|
|
continue;
|
|
}
|
|
|
|
owners->insert_last(owners, peer_id);
|
|
any = FALSE;
|
|
}
|
|
if (any)
|
|
{
|
|
owners->insert_last(owners,
|
|
identification_create_from_encoding(ID_ANY, chunk_empty));
|
|
}
|
|
this->creds->add_shared_list(this->creds, shared_key, owners);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* reload ipsec.secrets
|
|
*/
|
|
static void load_secrets(private_stroke_cred_t *this, char *file, int level,
|
|
FILE *prompt)
|
|
{
|
|
int line_nr = 0, fd;
|
|
chunk_t src, line;
|
|
struct stat sb;
|
|
void *addr;
|
|
|
|
DBG1(DBG_CFG, "loading secrets from '%s'", file);
|
|
fd = open(file, O_RDONLY);
|
|
if (fd == -1)
|
|
{
|
|
DBG1(DBG_CFG, "opening secrets file '%s' failed: %s", file,
|
|
strerror(errno));
|
|
return;
|
|
}
|
|
if (fstat(fd, &sb) == -1)
|
|
{
|
|
DBG1(DBG_LIB, "getting file size of '%s' failed: %s", file,
|
|
strerror(errno));
|
|
close(fd);
|
|
return;
|
|
}
|
|
addr = mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
|
|
if (addr == MAP_FAILED)
|
|
{
|
|
DBG1(DBG_LIB, "mapping '%s' failed: %s", file, strerror(errno));
|
|
close(fd);
|
|
return;
|
|
}
|
|
src = chunk_create(addr, sb.st_size);
|
|
|
|
if (level == 0)
|
|
{ /* flush secrets on non-recursive invocation */
|
|
this->creds->clear_secrets(this->creds);
|
|
}
|
|
|
|
while (fetchline(&src, &line))
|
|
{
|
|
chunk_t ids, token;
|
|
shared_key_type_t type;
|
|
|
|
line_nr++;
|
|
|
|
if (!eat_whitespace(&line))
|
|
{
|
|
continue;
|
|
}
|
|
if (line.len > strlen("include ") &&
|
|
strneq(line.ptr, "include ", strlen("include ")))
|
|
{
|
|
char **expanded, *dir, pattern[PATH_MAX];
|
|
u_char *pos;
|
|
|
|
if (level > MAX_SECRETS_RECURSION)
|
|
{
|
|
DBG1(DBG_CFG, "maximum level of %d includes reached, ignored",
|
|
MAX_SECRETS_RECURSION);
|
|
continue;
|
|
}
|
|
/* terminate filename by space */
|
|
line = chunk_skip(line, strlen("include "));
|
|
pos = memchr(line.ptr, ' ', line.len);
|
|
if (pos)
|
|
{
|
|
line.len = pos - line.ptr;
|
|
}
|
|
if (line.len && line.ptr[0] == '/')
|
|
{
|
|
if (line.len + 1 > sizeof(pattern))
|
|
{
|
|
DBG1(DBG_CFG, "include pattern too long, ignored");
|
|
continue;
|
|
}
|
|
snprintf(pattern, sizeof(pattern), "%.*s",
|
|
(int)line.len, line.ptr);
|
|
}
|
|
else
|
|
{ /* use directory of current file if relative */
|
|
dir = strdup(file);
|
|
dir = dirname(dir);
|
|
|
|
if (line.len + 1 + strlen(dir) + 1 > sizeof(pattern))
|
|
{
|
|
DBG1(DBG_CFG, "include pattern too long, ignored");
|
|
free(dir);
|
|
continue;
|
|
}
|
|
snprintf(pattern, sizeof(pattern), "%s/%.*s",
|
|
dir, (int)line.len, line.ptr);
|
|
free(dir);
|
|
}
|
|
#ifdef HAVE_GLOB_H
|
|
{
|
|
glob_t buf;
|
|
if (glob(pattern, GLOB_ERR, NULL, &buf) != 0)
|
|
{
|
|
DBG1(DBG_CFG, "expanding file expression '%s' failed",
|
|
pattern);
|
|
}
|
|
else
|
|
{
|
|
for (expanded = buf.gl_pathv; *expanded != NULL; expanded++)
|
|
{
|
|
load_secrets(this, *expanded, level + 1, prompt);
|
|
}
|
|
}
|
|
globfree(&buf);
|
|
}
|
|
#else /* HAVE_GLOB_H */
|
|
/* if glob(3) is not available, try to load pattern directly */
|
|
load_secrets(this, pattern, level + 1, prompt);
|
|
#endif /* HAVE_GLOB_H */
|
|
continue;
|
|
}
|
|
|
|
if (line.len > 2 && strneq(": ", line.ptr, 2))
|
|
{
|
|
/* no ids, skip the ':' */
|
|
ids = chunk_empty;
|
|
line.ptr++;
|
|
line.len--;
|
|
}
|
|
else if (extract_token_str(&ids, " : ", &line))
|
|
{
|
|
/* NULL terminate the extracted id string */
|
|
*(ids.ptr + ids.len) = '\0';
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_CFG, "line %d: missing ' : ' separator", line_nr);
|
|
break;
|
|
}
|
|
|
|
if (!eat_whitespace(&line) || !extract_token(&token, ' ', &line))
|
|
{
|
|
DBG1(DBG_CFG, "line %d: missing token", line_nr);
|
|
break;
|
|
}
|
|
if (match("RSA", &token) || match("ECDSA", &token))
|
|
{
|
|
if (!load_private(this, line, line_nr, prompt,
|
|
match("RSA", &token) ? KEY_RSA : KEY_ECDSA))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if (match("PIN", &token))
|
|
{
|
|
if (!load_pin(this, line, line_nr, prompt))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else if ((match("PSK", &token) && (type = SHARED_IKE)) ||
|
|
(match("EAP", &token) && (type = SHARED_EAP)) ||
|
|
(match("NTLM", &token) && (type = SHARED_NT_HASH)) ||
|
|
(match("XAUTH", &token) && (type = SHARED_EAP)))
|
|
{
|
|
if (!load_shared(this, line, line_nr, type, ids))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_CFG, "line %d: token must be either "
|
|
"RSA, ECDSA, PSK, EAP, XAUTH or PIN", line_nr);
|
|
break;
|
|
}
|
|
}
|
|
munmap(addr, sb.st_size);
|
|
close(fd);
|
|
}
|
|
|
|
/**
|
|
* load all certificates from ipsec.d
|
|
*/
|
|
static void load_certs(private_stroke_cred_t *this)
|
|
{
|
|
DBG1(DBG_CFG, "loading ca certificates from '%s'",
|
|
CA_CERTIFICATE_DIR);
|
|
load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
|
|
|
|
DBG1(DBG_CFG, "loading aa certificates from '%s'",
|
|
AA_CERTIFICATE_DIR);
|
|
load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
|
|
|
|
DBG1(DBG_CFG, "loading ocsp signer certificates from '%s'",
|
|
OCSP_CERTIFICATE_DIR);
|
|
load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509, X509_OCSP_SIGNER);
|
|
|
|
DBG1(DBG_CFG, "loading attribute certificates from '%s'",
|
|
ATTR_CERTIFICATE_DIR);
|
|
load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
|
|
|
|
DBG1(DBG_CFG, "loading crls from '%s'",
|
|
CRL_DIR);
|
|
load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
|
|
}
|
|
|
|
METHOD(stroke_cred_t, reread, void,
|
|
private_stroke_cred_t *this, stroke_msg_t *msg, FILE *prompt)
|
|
{
|
|
if (msg->reread.flags & REREAD_SECRETS)
|
|
{
|
|
DBG1(DBG_CFG, "rereading secrets");
|
|
load_secrets(this, SECRETS_FILE, 0, prompt);
|
|
}
|
|
if (msg->reread.flags & REREAD_CACERTS)
|
|
{
|
|
DBG1(DBG_CFG, "rereading ca certificates from '%s'",
|
|
CA_CERTIFICATE_DIR);
|
|
load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
|
|
}
|
|
if (msg->reread.flags & REREAD_OCSPCERTS)
|
|
{
|
|
DBG1(DBG_CFG, "rereading ocsp signer certificates from '%s'",
|
|
OCSP_CERTIFICATE_DIR);
|
|
load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509,
|
|
X509_OCSP_SIGNER);
|
|
}
|
|
if (msg->reread.flags & REREAD_AACERTS)
|
|
{
|
|
DBG1(DBG_CFG, "rereading aa certificates from '%s'",
|
|
AA_CERTIFICATE_DIR);
|
|
load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
|
|
}
|
|
if (msg->reread.flags & REREAD_ACERTS)
|
|
{
|
|
DBG1(DBG_CFG, "rereading attribute certificates from '%s'",
|
|
ATTR_CERTIFICATE_DIR);
|
|
load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
|
|
}
|
|
if (msg->reread.flags & REREAD_CRLS)
|
|
{
|
|
DBG1(DBG_CFG, "rereading crls from '%s'",
|
|
CRL_DIR);
|
|
load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
|
|
}
|
|
}
|
|
|
|
METHOD(stroke_cred_t, add_shared, void,
|
|
private_stroke_cred_t *this, shared_key_t *shared, linked_list_t *owners)
|
|
{
|
|
this->creds->add_shared_list(this->creds, shared, owners);
|
|
}
|
|
|
|
METHOD(stroke_cred_t, destroy, void,
|
|
private_stroke_cred_t *this)
|
|
{
|
|
lib->credmgr->remove_set(lib->credmgr, &this->creds->set);
|
|
this->creds->destroy(this->creds);
|
|
free(this);
|
|
}
|
|
|
|
/*
|
|
* see header file
|
|
*/
|
|
stroke_cred_t *stroke_cred_create()
|
|
{
|
|
private_stroke_cred_t *this;
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.set = {
|
|
.create_private_enumerator = (void*)return_null,
|
|
.create_cert_enumerator = (void*)return_null,
|
|
.create_shared_enumerator = (void*)return_null,
|
|
.create_cdp_enumerator = (void*)return_null,
|
|
.cache_cert = (void*)_cache_cert,
|
|
},
|
|
.reread = _reread,
|
|
.load_ca = _load_ca,
|
|
.load_peer = _load_peer,
|
|
.load_pubkey = _load_pubkey,
|
|
.add_shared = _add_shared,
|
|
.cachecrl = _cachecrl,
|
|
.destroy = _destroy,
|
|
},
|
|
.creds = mem_cred_create(),
|
|
);
|
|
|
|
lib->credmgr->add_set(lib->credmgr, &this->creds->set);
|
|
|
|
this->force_ca_cert = lib->settings->get_bool(lib->settings,
|
|
"charon.plugins.stroke.ignore_missing_ca_basic_constraint", FALSE);
|
|
|
|
load_certs(this);
|
|
load_secrets(this, SECRETS_FILE, 0, NULL);
|
|
|
|
return &this->public;
|
|
}
|
|
|