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-rwxr-xr-xsrc/libstrongswan/crypto/crl.c536
1 files changed, 0 insertions, 536 deletions
diff --git a/src/libstrongswan/crypto/crl.c b/src/libstrongswan/crypto/crl.c
deleted file mode 100755
index ab23bb9ec..000000000
--- a/src/libstrongswan/crypto/crl.c
+++ /dev/null
@@ -1,536 +0,0 @@
-/**
- * @file crl.c
- *
- * @brief Implementation of crl_t.
- *
- */
-
-/*
- * Copyright (C) 2006 Andreas Steffen
- * Hochschule fuer Technik Rapperswil
- *
- * 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. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * 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.
- *
- * RCSID $Id: crl.c 3355 2007-11-20 12:06:40Z martin $
- */
-
-#include <sys/stat.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdio.h>
-
-#include <library.h>
-#include <debug.h>
-#include <asn1/oid.h>
-#include <asn1/asn1.h>
-#include <asn1/pem.h>
-#include <utils/linked_list.h>
-#include <utils/identification.h>
-
-#include "certinfo.h"
-#include "x509.h"
-#include "crl.h"
-
-#define CRL_WARNING_INTERVAL 7 /* days */
-
-/* access structure for a revoked certificate */
-
-typedef struct revokedCert_t revokedCert_t;
-
-struct revokedCert_t {
- chunk_t userCertificate;
- time_t revocationDate;
- crl_reason_t revocationReason;
-};
-
-typedef struct private_crl_t private_crl_t;
-
-/**
- * Private data of a crl_t object.
- */
-struct private_crl_t {
- /**
- * Public interface for this crl.
- */
- crl_t public;
-
- /**
- * Time when crl was installed
- */
- time_t installed;
-
- /**
- * List of crlDistributionPoints
- */
- linked_list_t *crlDistributionPoints;
-
- /**
- * X.509 crl in DER format
- */
- chunk_t certificateList;
-
- /**
- * X.509 crl body over which signature is computed
- */
- chunk_t tbsCertList;
-
- /**
- * Version of the X.509 crl
- */
- u_int version;
-
- /**
- * Signature algorithm
- */
- int sigAlg;
-
- /**
- * ID representing the crl issuer
- */
- identification_t *issuer;
-
- /**
- * CRL number
- */
- chunk_t crlNumber;
-
- /**
- * Time when the crl was generated
- */
- time_t thisUpdate;
-
- /**
- * Time when an update crl will be available
- */
- time_t nextUpdate;
-
- /**
- * List of identification_t's representing subjectAltNames
- */
- linked_list_t *revokedCertificates;
-
- /**
- * Authority Key Identifier
- */
- chunk_t authKeyID;
-
- /**
- * Authority Key Serial Number
- */
- chunk_t authKeySerialNumber;
-
- /**
- * Signature algorithm (must be identical to sigAlg)
- */
- int algorithm;
-
- /**
- * Signature
- */
- chunk_t signature;
-};
-
-/**
- * ASN.1 definition of an X.509 certificate revocation list
- */
-static const asn1Object_t crlObjects[] = {
- { 0, "certificateList", ASN1_SEQUENCE, ASN1_OBJ }, /* 0 */
- { 1, "tbsCertList", ASN1_SEQUENCE, ASN1_OBJ }, /* 1 */
- { 2, "version", ASN1_INTEGER, ASN1_OPT |
- ASN1_BODY }, /* 2 */
- { 2, "end opt", ASN1_EOC, ASN1_END }, /* 3 */
- { 2, "signature", ASN1_EOC, ASN1_RAW }, /* 4 */
- { 2, "issuer", ASN1_SEQUENCE, ASN1_OBJ }, /* 5 */
- { 2, "thisUpdate", ASN1_EOC, ASN1_RAW }, /* 6 */
- { 2, "nextUpdate", ASN1_EOC, ASN1_RAW }, /* 7 */
- { 2, "revokedCertificates", ASN1_SEQUENCE, ASN1_OPT |
- ASN1_LOOP }, /* 8 */
- { 3, "certList", ASN1_SEQUENCE, ASN1_NONE }, /* 9 */
- { 4, "userCertificate", ASN1_INTEGER, ASN1_BODY }, /* 10 */
- { 4, "revocationDate", ASN1_EOC, ASN1_RAW }, /* 11 */
- { 4, "crlEntryExtensions", ASN1_SEQUENCE, ASN1_OPT |
- ASN1_LOOP }, /* 12 */
- { 5, "extension", ASN1_SEQUENCE, ASN1_NONE }, /* 13 */
- { 6, "extnID", ASN1_OID, ASN1_BODY }, /* 14 */
- { 6, "critical", ASN1_BOOLEAN, ASN1_DEF |
- ASN1_BODY }, /* 15 */
- { 6, "extnValue", ASN1_OCTET_STRING, ASN1_BODY }, /* 16 */
- { 4, "end opt or loop", ASN1_EOC, ASN1_END }, /* 17 */
- { 2, "end opt or loop", ASN1_EOC, ASN1_END }, /* 18 */
- { 2, "optional extensions", ASN1_CONTEXT_C_0, ASN1_OPT }, /* 19 */
- { 3, "crlExtensions", ASN1_SEQUENCE, ASN1_LOOP }, /* 20 */
- { 4, "extension", ASN1_SEQUENCE, ASN1_NONE }, /* 21 */
- { 5, "extnID", ASN1_OID, ASN1_BODY }, /* 22 */
- { 5, "critical", ASN1_BOOLEAN, ASN1_DEF |
- ASN1_BODY }, /* 23 */
- { 5, "extnValue", ASN1_OCTET_STRING, ASN1_BODY }, /* 24 */
- { 3, "end loop", ASN1_EOC, ASN1_END }, /* 25 */
- { 2, "end opt", ASN1_EOC, ASN1_END }, /* 26 */
- { 1, "signatureAlgorithm", ASN1_EOC, ASN1_RAW }, /* 27 */
- { 1, "signatureValue", ASN1_BIT_STRING, ASN1_BODY } /* 28 */
- };
-
-#define CRL_OBJ_CERTIFICATE_LIST 0
-#define CRL_OBJ_TBS_CERT_LIST 1
-#define CRL_OBJ_VERSION 2
-#define CRL_OBJ_SIG_ALG 4
-#define CRL_OBJ_ISSUER 5
-#define CRL_OBJ_THIS_UPDATE 6
-#define CRL_OBJ_NEXT_UPDATE 7
-#define CRL_OBJ_USER_CERTIFICATE 10
-#define CRL_OBJ_REVOCATION_DATE 11
-#define CRL_OBJ_CRL_ENTRY_EXTN_ID 14
-#define CRL_OBJ_CRL_ENTRY_CRITICAL 15
-#define CRL_OBJ_CRL_ENTRY_EXTN_VALUE 16
-#define CRL_OBJ_EXTN_ID 22
-#define CRL_OBJ_CRITICAL 23
-#define CRL_OBJ_EXTN_VALUE 24
-#define CRL_OBJ_ALGORITHM 27
-#define CRL_OBJ_SIGNATURE 28
-#define CRL_OBJ_ROOF 29
-
-/**
- * Parses a CRL revocation reason code
- */
-static crl_reason_t parse_crl_reasonCode(chunk_t object)
-{
- crl_reason_t reason = REASON_UNSPECIFIED;
-
- if (*object.ptr == ASN1_ENUMERATED && asn1_length(&object) == 1)
- {
- reason = *object.ptr;
- }
- DBG2(" '%N'", crl_reason_names, reason);
-
- return reason;
-}
-
-/**
- * Parses an X.509 Certificate Revocation List (CRL)
- */
-bool parse_x509crl(chunk_t blob, u_int level0, private_crl_t *crl)
-{
- asn1_ctx_t ctx;
- bool critical;
- chunk_t extnID;
- chunk_t userCertificate = chunk_empty;
- revokedCert_t *revokedCert = NULL;
- chunk_t object;
- u_int level;
- int objectID = 0;
-
- asn1_init(&ctx, blob, level0, FALSE, FALSE);
-
- while (objectID < CRL_OBJ_ROOF)
- {
- if (!extract_object(crlObjects, &objectID, &object, &level, &ctx))
- return FALSE;
-
- /* those objects which will parsed further need the next higher level */
- level++;
-
- switch (objectID)
- {
- case CRL_OBJ_CERTIFICATE_LIST:
- crl->certificateList = object;
- break;
- case CRL_OBJ_TBS_CERT_LIST:
- crl->tbsCertList = object;
- break;
- case CRL_OBJ_VERSION:
- crl->version = (object.len) ? (1+(u_int)*object.ptr) : 1;
- DBG2(" v%d", crl->version);
- break;
- case CRL_OBJ_SIG_ALG:
- crl->sigAlg = parse_algorithmIdentifier(object, level, NULL);
- break;
- case CRL_OBJ_ISSUER:
- crl->issuer = identification_create_from_encoding(ID_DER_ASN1_DN, object);
- DBG2(" '%D'", crl->issuer);
- break;
- case CRL_OBJ_THIS_UPDATE:
- crl->thisUpdate = parse_time(object, level);
- break;
- case CRL_OBJ_NEXT_UPDATE:
- crl->nextUpdate = parse_time(object, level);
- break;
- case CRL_OBJ_USER_CERTIFICATE:
- userCertificate = object;
- break;
- case CRL_OBJ_REVOCATION_DATE:
- revokedCert = malloc_thing(revokedCert_t);
- revokedCert->userCertificate = userCertificate;
- revokedCert->revocationDate = parse_time(object, level);
- revokedCert->revocationReason = REASON_UNSPECIFIED;
- crl->revokedCertificates->insert_last(crl->revokedCertificates, (void *)revokedCert);
- break;
- case CRL_OBJ_CRL_ENTRY_EXTN_ID:
- case CRL_OBJ_EXTN_ID:
- extnID = object;
- break;
- case CRL_OBJ_CRL_ENTRY_CRITICAL:
- case CRL_OBJ_CRITICAL:
- critical = object.len && *object.ptr;
- DBG2(" %s",(critical)?"TRUE":"FALSE");
- break;
- case CRL_OBJ_CRL_ENTRY_EXTN_VALUE:
- case CRL_OBJ_EXTN_VALUE:
- {
- int extn_oid = known_oid(extnID);
-
- if (revokedCert && extn_oid == OID_CRL_REASON_CODE)
- {
- revokedCert->revocationReason = parse_crl_reasonCode(object);
- }
- else if (extn_oid == OID_AUTHORITY_KEY_ID)
- {
- x509_parse_authorityKeyIdentifier(object, level,
- &crl->authKeyID, &crl->authKeySerialNumber);
- }
- else if (extn_oid == OID_CRL_NUMBER)
- {
- if (!parse_asn1_simple_object(&object, ASN1_INTEGER, level, "crlNumber"))
- {
- return FALSE;
- }
- crl->crlNumber = object;
- }
- }
- break;
- case CRL_OBJ_ALGORITHM:
- crl->algorithm = parse_algorithmIdentifier(object, level, NULL);
- if (crl->algorithm != crl->sigAlg)
- {
- DBG1(" signature algorithms do not agree");
- return FALSE;
- }
- break;
- case CRL_OBJ_SIGNATURE:
- crl->signature = object;
- break;
- default:
- break;
- }
- objectID++;
- }
- time(&crl->installed);
- return TRUE;
-}
-
-/**
- * Implements crl_t.is_valid
- */
-static bool is_valid(const private_crl_t *this)
-{
- time_t current_time = time(NULL);
-
- DBG2(" this update : %T", &this->thisUpdate);
- DBG2(" current time: %T", &current_time);
- DBG2(" next update: %T", &this->nextUpdate);
-
- return current_time < this->nextUpdate;
-}
-
-/**
- * Implements crl_t.get_issuer
- */
-static identification_t *get_issuer(const private_crl_t *this)
-{
- return this->issuer;
-}
-
-/**
- * Implements crl_t.equals_issuer
- */
-static bool equals_issuer(const private_crl_t *this, const private_crl_t *other)
-{
- return (this->authKeyID.ptr)
- ? chunk_equals(this->authKeyID, other->authKeyID)
- : (this->issuer->equals(this->issuer, other->issuer)
- && chunk_equals_or_null(this->authKeySerialNumber, other->authKeySerialNumber));
-}
-
-/**
- * Implements crl_t.is_issuer
- */
-static bool is_issuer(const private_crl_t *this, const x509_t *issuer)
-{
- return (this->authKeyID.ptr)
- ? chunk_equals(this->authKeyID, issuer->get_subjectKeyID(issuer))
- : (this->issuer->equals(this->issuer, issuer->get_subject(issuer))
- && chunk_equals_or_null(this->authKeySerialNumber, issuer->get_serialNumber(issuer)));
-}
-
-/**
- * Implements crl_t.is_newer
- */
-static bool is_newer(const private_crl_t *this, const private_crl_t *other)
-{
- return (this->nextUpdate > other->nextUpdate);
-}
-
-/**
- * Implements crl_t.verify
- */
-static bool verify(const private_crl_t *this, const rsa_public_key_t *signer)
-{
- hash_algorithm_t algorithm = hasher_algorithm_from_oid(this->algorithm);
-
- if (algorithm == HASH_UNKNOWN)
- {
- DBG1(" unknown signature algorithm");
- return FALSE;
- }
- return signer->verify_emsa_pkcs1_signature(signer, algorithm, this->tbsCertList, this->signature) == SUCCESS;
-}
-
-/**
- * Implements crl_t.get_status
- */
-static void get_status(const private_crl_t *this, certinfo_t *certinfo)
-{
- chunk_t serialNumber = certinfo->get_serialNumber(certinfo);
- iterator_t *iterator;
- revokedCert_t *revokedCert;
-
- certinfo->set_nextUpdate(certinfo, this->nextUpdate);
- certinfo->set_status(certinfo, CERT_GOOD);
-
- iterator = this->revokedCertificates->create_iterator(this->revokedCertificates, TRUE);
- while (iterator->iterate(iterator, (void**)&revokedCert))
- {
- if (chunk_equals(serialNumber, revokedCert->userCertificate))
- {
- certinfo->set_status(certinfo, CERT_REVOKED);
- certinfo->set_revocationTime(certinfo, revokedCert->revocationDate);
- certinfo->set_revocationReason(certinfo, revokedCert->revocationReason);
- break;
- }
- }
- iterator->destroy(iterator);
-}
-
-/**
- * Implements crl_t.write_to_file.
- */
-static bool write_to_file(private_crl_t *this, const char *path, mode_t mask, bool force)
-{
- return chunk_write(this->certificateList, path, "crl", mask, force);
-}
-
-/**
- * Implements crl_t.destroy
- */
-static void destroy(private_crl_t *this)
-{
- this->revokedCertificates->destroy_function(this->revokedCertificates, free);
- this->crlDistributionPoints->destroy_offset(this->crlDistributionPoints,
- offsetof(identification_t, destroy));
- DESTROY_IF(this->issuer);
- free(this->certificateList.ptr);
- free(this);
-}
-
-/**
- * Implementation of crl_t.list.
- */
-static void list(private_crl_t *this, FILE* out, bool utc)
-{
- time_t now;
-
- now = time(NULL);
-
- fprintf(out, "%#T, revoked certs: %d\n", &this->installed, utc,
- this->revokedCertificates->get_count(this->revokedCertificates));
- fprintf(out, " issuer: '%D'\n", this->issuer);
- if (this->crlNumber.ptr)
- {
- fprintf(out, " crlnumber: %#B\n", &this->crlNumber);
- }
- fprintf(out, " updates: this %#T\n", &this->thisUpdate, utc);
- fprintf(out, " next %#T ", &this->nextUpdate, utc);
- if (this->nextUpdate == UNDEFINED_TIME)
- {
- fprintf(out, "ok (expires never)\n");
- }
- else if (now > this->nextUpdate)
- {
- fprintf(out, "expired (%#V ago)\n", &now, &this->nextUpdate);
- }
- else if (now > this->nextUpdate - CRL_WARNING_INTERVAL * 60 * 60 * 24)
- {
- fprintf(out, "ok (expires in %#V)\n", &now, &this->nextUpdate);
- }
- else
- {
- fprintf(out, "ok\n");
- }
- if (this->authKeyID.ptr)
- {
- fprintf(out, " authkey: %#B\n", &this->authKeyID);
- }
- if (this->authKeySerialNumber.ptr)
- {
- fprintf(out, " aserial: %#B\n", &this->authKeySerialNumber);
- }
-}
-
-/*
- * Described in header.
- */
-crl_t *crl_create_from_chunk(chunk_t chunk)
-{
- private_crl_t *this = malloc_thing(private_crl_t);
-
- /* initialize */
- this->crlDistributionPoints = linked_list_create();
- this->tbsCertList = chunk_empty;
- this->issuer = NULL;
- this->crlNumber = chunk_empty;
- this->revokedCertificates = linked_list_create();
- this->authKeyID = chunk_empty;
- this->authKeySerialNumber = chunk_empty;
-
- /* public functions */
- this->public.get_issuer = (identification_t* (*) (const crl_t*))get_issuer;
- this->public.equals_issuer = (bool (*) (const crl_t*,const crl_t*))equals_issuer;
- this->public.is_issuer = (bool (*) (const crl_t*,const x509_t*))is_issuer;
- this->public.is_valid = (bool (*) (const crl_t*))is_valid;
- this->public.is_newer = (bool (*) (const crl_t*,const crl_t*))is_newer;
- this->public.verify = (bool (*) (const crl_t*,const rsa_public_key_t*))verify;
- this->public.get_status = (void (*) (const crl_t*,certinfo_t*))get_status;
- this->public.write_to_file = (bool (*) (const crl_t*,const char*,mode_t,bool))write_to_file;
- this->public.list = (void(*)(crl_t*, FILE* out, bool utc))list;
- this->public.destroy = (void (*) (crl_t*))destroy;
-
- if (!parse_x509crl(chunk, 0, this))
- {
- destroy(this);
- return NULL;
- }
-
- return &this->public;
-}
-
-/*
- * Described in header.
- */
-crl_t *crl_create_from_file(const char *filename)
-{
- bool pgp = FALSE;
- chunk_t chunk = chunk_empty;
-
- if (!pem_asn1_load_file(filename, NULL, "crl", &chunk, &pgp))
- {
- return NULL;
- }
- return crl_create_from_chunk(chunk);
-}
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