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Update X509

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This commit is contained in:
Zhi Guan
2023-02-06 11:48:33 +08:00
parent 36f9a76d3a
commit 97d08c956a
10 changed files with 222 additions and 275 deletions
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2
include/gmssl/x509.h
View File

@@ -104,6 +104,8 @@ int x509_directory_name_check(int tag, const uint8_t *d, size_t dlen);
int x509_directory_name_check_ex(int tag, const uint8_t *d, size_t dlen, size_t minlen, size_t maxlen); int x509_directory_name_check_ex(int tag, const uint8_t *d, size_t dlen, size_t minlen, size_t maxlen);
int x509_directory_name_to_der(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen); int x509_directory_name_to_der(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int x509_directory_name_from_der(int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen); int x509_directory_name_from_der(int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
int x509_explicit_directory_name_to_der(int index, int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int x509_explicit_directory_name_from_der(int index, int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
int x509_directory_name_print(FILE *fp, int fmt, int ind, const char *label, int tag, const uint8_t *d, size_t dlen); int x509_directory_name_print(FILE *fp, int fmt, int ind, const char *label, int tag, const uint8_t *d, size_t dlen);
/* /*

1
include/gmssl/x509_ext.h
View File

@@ -386,6 +386,7 @@ BasicConstraints ::= SEQUENCE {
cA BOOLEAN DEFAULT FALSE, cA BOOLEAN DEFAULT FALSE,
pathLenConstraint INTEGER (0..MAX) OPTIONAL } pathLenConstraint INTEGER (0..MAX) OPTIONAL }
*/ */
#define X509_MAX_PATH_LEN_CONSTRAINT 6
int x509_basic_constraints_to_der(int ca, int path_len_cons, uint8_t **out, size_t *outlen); int x509_basic_constraints_to_der(int ca, int path_len_cons, uint8_t **out, size_t *outlen);
int x509_basic_constraints_from_der(int *ca, int *path_len_cons, const uint8_t **in, size_t *inlen); int x509_basic_constraints_from_der(int *ca, int *path_len_cons, const uint8_t **in, size_t *inlen);
int x509_basic_constraints_check(int ca, int path_len_cons, int cert_type); int x509_basic_constraints_check(int ca, int path_len_cons, int cert_type);

36
include/gmssl/x509_str.h
View File

@@ -1,36 +0,0 @@
/*
* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
#ifndef GMSSL_X509_STR_H
#define GMSSL_X509_STR_H
#include <time.h>
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include <gmssl/sm2.h>
#include <gmssl/oid.h>
#include <gmssl/asn1.h>
#ifdef __cplusplus
extern "C" {
#endif
int x509_explicit_directory_name_to_der(int index, int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int x509_explicit_directory_name_from_der(int index, int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
#ifdef __cplusplus
}
#endif
#endif

1
src/cms.c
View File

@@ -20,7 +20,6 @@
#include <gmssl/digest.h> #include <gmssl/digest.h>
#include <gmssl/error.h> #include <gmssl/error.h>
#include <gmssl/x509.h> #include <gmssl/x509.h>
#include <gmssl/x509_str.h>
#include <gmssl/x509_alg.h> #include <gmssl/x509_alg.h>
#include <gmssl/x509_ext.h> #include <gmssl/x509_ext.h>
#include <gmssl/x509_crl.h> #include <gmssl/x509_crl.h>

39
src/x509_cer.c
View File

@@ -21,7 +21,6 @@
#include <gmssl/rsa.h> #include <gmssl/rsa.h>
#include <gmssl/file.h> #include <gmssl/file.h>
#include <gmssl/x509_oid.h> #include <gmssl/x509_oid.h>
#include <gmssl/x509_str.h>
#include <gmssl/x509_alg.h> #include <gmssl/x509_alg.h>
#include <gmssl/x509_ext.h> #include <gmssl/x509_ext.h>
#include <gmssl/x509.h> #include <gmssl/x509.h>
@@ -268,8 +267,6 @@ int x509_directory_name_check_ex(int tag, const uint8_t *d, size_t dlen, size_t
int x509_directory_name_to_der(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen) int x509_directory_name_to_der(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen)
{ {
int ret;
if (dlen == 0) { if (dlen == 0) {
return 0; return 0;
} }
@@ -318,6 +315,41 @@ int x509_directory_name_print(FILE *fp, int fmt, int ind, const char *label, int
return asn1_string_print(fp, fmt, ind, label, tag, d, dlen); return asn1_string_print(fp, fmt, ind, label, tag, d, dlen);
} }
int x509_explicit_directory_name_to_der(int index, int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen)
{
int ret;
size_t len = 0;
if ((ret = x509_directory_name_to_der(tag, d, dlen, NULL, &len)) != 1) {
if (ret < 0) error_print();
return ret;
}
if (asn1_explicit_header_to_der(index, len, out, outlen) != 1
|| x509_directory_name_to_der(tag, d, dlen, out, outlen) != 1) {
error_print();
return -1;
}
return 1;
}
int x509_explicit_directory_name_from_der(int index, int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen)
{
int ret;
const uint8_t *p;
size_t len;
if ((ret = asn1_explicit_from_der(index, &p, &len, in, inlen)) != 1) {
if (ret < 0) error_print();
return ret;
}
if (x509_directory_name_from_der(tag, d, dlen, &p, &len) != 1
|| asn1_length_is_zero(len) != 1) {
error_print();
return -1;
}
return 1;
}
static const struct { static const struct {
int oid; int oid;
int is_printable_string_only; int is_printable_string_only;
@@ -1223,7 +1255,6 @@ static int x509_certificate_print(FILE *fp, int fmt, int ind, const char *label,
{ {
const uint8_t *p; const uint8_t *p;
size_t len; size_t len;
int val;
format_print(fp, fmt, ind, "%s\n", label); format_print(fp, fmt, ind, "%s\n", label);
ind += 4; ind += 4;

155
src/x509_crl.c
View File

@@ -1209,9 +1209,6 @@ int x509_crl_exts_check(const uint8_t *d, size_t dlen)
int critical; int critical;
const uint8_t *val; const uint8_t *val;
size_t vlen; size_t vlen;
int tag;
const uint8_t *p;
size_t len;
while (dlen) { while (dlen) {
if (x509_crl_ext_from_der_ex(&oid, nodes, &nodes_cnt, &critical, &val, &vlen, &d, &dlen) != 1) { if (x509_crl_ext_from_der_ex(&oid, nodes, &nodes_cnt, &critical, &val, &vlen, &d, &dlen) != 1) {
@@ -1359,7 +1356,6 @@ err:
static int x509_cert_list_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen) static int x509_cert_list_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen)
{ {
int val;
const uint8_t *p; const uint8_t *p;
size_t len; size_t len;
@@ -1700,154 +1696,3 @@ int x509_crls_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t
} }
return 1; return 1;
} }
int x509_crl_new_from_uri(uint8_t **crl, size_t *crl_len, const char *uri, size_t urilen)
{
int ret = -1;
char *uristr = NULL;
uint8_t *buf = NULL;
size_t buflen;
const uint8_t *p;
if (!(uristr = strndup(uri, urilen))) {
error_print();
return -1;
}
if (http_get(uristr, NULL, &buflen, 0) < 0) {
error_print();
goto end;
}
if (!buflen) {
error_print();
goto end;
}
if (!(buf = malloc(buflen))) {
error_print();
goto end;
}
if (http_get(uristr, buf, &buflen, buflen) != 1) {
error_print();
goto end;
}
p = buf;
if (x509_crl_from_der((const uint8_t **)crl, crl_len, &p, &buflen) != 1) {
error_print();
goto end;
}
buf = NULL;
ret = 1;
end:
if (uristr) free(uristr);
if (buf) free(buf);
return ret;
}
int x509_crl_new_from_cert(uint8_t **crl, size_t *crl_len, const uint8_t *cert, size_t certlen)
{
int ret;
const uint8_t *exts;
size_t extslen;
int critical;
const uint8_t *val;
size_t vlen;
const char *uri;
size_t urilen;
int reason;
const uint8_t *crl_issuer;
size_t crl_issuer_len;
if ((ret = x509_cert_get_exts(cert, certlen, &exts, &extslen)) != 1) {
if (ret < 0) error_print();
return ret;
}
if ((ret = x509_exts_get_ext_by_oid(exts, extslen,
OID_ce_crl_distribution_points, &critical, &val, &vlen)) != 1) {
if (ret < 0) error_print();
return ret;
}
if (x509_uri_as_distribution_points_from_der(&uri, &urilen,
&reason, &crl_issuer, &crl_issuer_len, &val, &vlen) != 1
|| asn1_length_is_zero(vlen) != 1) {
error_print();
return -1;
}
if (!uri) {
*crl = NULL;
*crl_len = 0;
return 0;
}
if (x509_crl_new_from_uri(crl, crl_len, uri, urilen) != 1) {
error_print();
return -1;
}
return 1;
}
int x509_cert_check_crl(const uint8_t *cert, size_t certlen, const uint8_t *cacert, size_t cacertlen,
const char *ca_signer_id, size_t ca_signer_id_len)
{
int ret = -1;
uint8_t *crl = NULL;
size_t crl_len = 0;
const uint8_t *crl_issuer;
size_t crl_issuer_len;
const uint8_t *issuer;
size_t issuer_len;
const uint8_t *serial;
size_t serial_len;
time_t revoke_date;
const uint8_t *crl_entry_exts;
size_t crl_entry_exts_len;
// download CRL and do basic validation
if (x509_crl_new_from_cert(&crl, &crl_len, cert, certlen) != 1) {
error_print();
return -1;
}
if (x509_crl_check(crl, crl_len, time(NULL)) != 1) {
error_print();
goto end;
}
if (x509_cert_get_issuer_and_serial_number(cert, certlen, &issuer, &issuer_len, &serial, &serial_len) != 1) {
error_print();
goto end;
}
// make sure CRL's issuer is the certificate issuer
if (x509_crl_get_issuer(crl, crl_len, &crl_issuer, &crl_issuer_len) != 1) {
error_print();
goto end;
}
if (x509_name_equ(issuer, issuer_len, crl_issuer, crl_issuer_len) != 1) {
error_print();
goto end;
}
// verify CRL
if (x509_crl_verify_by_ca_cert(crl, crl_len, cacert, cacertlen, ca_signer_id, ca_signer_id_len) != 1) {
error_print();
goto end;
}
// check if the certificate in the CRL
if ((ret = x509_crl_find_revoked_cert_by_serial_number(crl, crl_len, serial, serial_len,
&revoke_date, &crl_entry_exts, &crl_entry_exts_len)) < 0) {
error_print();
goto end;
}
if (ret == 1) {
ret = -1;
error_print();
goto end;
}
ret = 1;
end:
if (crl) free(crl);
return ret;
}

84
src/x509_ext.c
View File

@@ -18,7 +18,6 @@
#include <gmssl/oid.h> #include <gmssl/oid.h>
#include <gmssl/asn1.h> #include <gmssl/asn1.h>
#include <gmssl/x509.h> #include <gmssl/x509.h>
#include <gmssl/x509_str.h>
#include <gmssl/x509_oid.h> #include <gmssl/x509_oid.h>
#include <gmssl/x509_ext.h> #include <gmssl/x509_ext.h>
#include <gmssl/error.h> #include <gmssl/error.h>
@@ -326,9 +325,10 @@ int x509_exts_add_key_usage(uint8_t *exts, size_t *extslen, size_t maxlen, int c
return 0; return 0;
} }
if (!bits) { if (!bits) {
// TODO: 检查是否在合法范围内 if (x509_key_usage_check(bits, -1) != 1) {
error_print(); error_print();
return -1; return -1;
}
} }
exts += *extslen; exts += *extslen;
@@ -663,41 +663,6 @@ err:
return -1; return -1;
} }
int x509_explicit_directory_name_to_der(int index, int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen)
{
int ret;
size_t len = 0;
if ((ret = x509_directory_name_to_der(tag, d, dlen, NULL, &len)) != 1) {
if (ret < 0) error_print();
return ret;
}
if (asn1_explicit_header_to_der(index, len, out, outlen) != 1
|| x509_directory_name_to_der(tag, d, dlen, out, outlen) != 1) {
error_print();
return -1;
}
return 1;
}
int x509_explicit_directory_name_from_der(int index, int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen)
{
int ret;
const uint8_t *p;
size_t len;
if ((ret = asn1_explicit_from_der(index, &p, &len, in, inlen)) != 1) {
if (ret < 0) error_print();
return ret;
}
if (x509_directory_name_from_der(tag, d, dlen, &p, &len) != 1
|| asn1_length_is_zero(len) != 1) {
error_print();
return -1;
}
return 1;
}
int x509_edi_party_name_to_der( int x509_edi_party_name_to_der(
int assigner_choice, const uint8_t *assigner, size_t assigner_len, int assigner_choice, const uint8_t *assigner, size_t assigner_len,
int party_name_choice, const uint8_t *party_name, size_t party_name_len, int party_name_choice, const uint8_t *party_name, size_t party_name_len,
@@ -1177,7 +1142,17 @@ int x509_key_usage_from_name(int *flag, const char *name)
int x509_key_usage_check(int bits, int cert_type) int x509_key_usage_check(int bits, int cert_type)
{ {
if (bits == -1) {
return 0;
}
if (!bits) {
error_print();
return -1;
}
switch (cert_type) { switch (cert_type) {
case -1:
break;
case X509_cert_server_auth: case X509_cert_server_auth:
case X509_cert_client_auth: case X509_cert_client_auth:
if (!(bits & X509_KU_DIGITAL_SIGNATURE) if (!(bits & X509_KU_DIGITAL_SIGNATURE)
@@ -1230,7 +1205,6 @@ int x509_key_usage_check(int bits, int cert_type)
//return -1; // comment to print warning //return -1; // comment to print warning
} }
break; break;
default: default:
error_print(); error_print();
return -1; return -1;
@@ -1344,7 +1318,7 @@ int x509_notice_reference_to_der(
int x509_notice_reference_from_der( int x509_notice_reference_from_der(
int *org_tag, const uint8_t **org, size_t *org_len, int *org_tag, const uint8_t **org, size_t *org_len,
int notice_numbers[X509_MAX_NOTICE_NUMBERS], size_t *notice_numbers_cnt, size_t max_notice_numbers, //FIXME: max_notice_numbers 还没检查 int *notice_numbers, size_t *notice_numbers_cnt, size_t max_notice_numbers,
const uint8_t **in, size_t *inlen) const uint8_t **in, size_t *inlen)
{ {
int ret; int ret;
@@ -1357,7 +1331,7 @@ int x509_notice_reference_from_der(
return ret; return ret;
} }
if (x509_display_text_from_der(org_tag, org, org_len, &d, &dlen) != 1 if (x509_display_text_from_der(org_tag, org, org_len, &d, &dlen) != 1
|| asn1_sequence_of_int_from_der(notice_numbers, notice_numbers_cnt, X509_MAX_NOTICE_NUMBERS, &d, &dlen) != 1 || asn1_sequence_of_int_from_der(notice_numbers, notice_numbers_cnt, max_notice_numbers, &d, &dlen) != 1
|| asn1_length_is_zero(dlen) != 1) { || asn1_length_is_zero(dlen) != 1) {
error_print(); error_print();
return -1; return -1;
@@ -1416,7 +1390,7 @@ int x509_user_notice_to_der(
int x509_user_notice_from_der( int x509_user_notice_from_der(
int *notice_ref_org_tag, const uint8_t **notice_ref_org, size_t *notice_ref_org_len, int *notice_ref_org_tag, const uint8_t **notice_ref_org, size_t *notice_ref_org_len,
int *notice_ref_notice_numbers, size_t *notice_ref_notice_numbers_cnt, size_t max_notice_ref_notice_numbers, // FIXME: max_notice_ref_notice_numbers int *notice_ref_notice_numbers, size_t *notice_ref_notice_numbers_cnt, size_t max_notice_ref_notice_numbers,
int *explicit_text_tag, const uint8_t **explicit_text, size_t *explicit_text_len, int *explicit_text_tag, const uint8_t **explicit_text, size_t *explicit_text_len,
const uint8_t **in, size_t *inlen) const uint8_t **in, size_t *inlen)
{ {
@@ -1459,7 +1433,6 @@ err:
return -1; return -1;
} }
// 是否要针对oid = cps的IA5String做一个方便的接口呢？毕竟oid 只有两个可选项
int x509_policy_qualifier_info_to_der( int x509_policy_qualifier_info_to_der(
int oid, int oid,
const uint8_t *qualifier, size_t qualifier_len, const uint8_t *qualifier, size_t qualifier_len,
@@ -1842,7 +1815,6 @@ int x509_basic_constraints_from_der(int *ca, int *path_len_cons, const uint8_t *
return 1; return 1;
} }
// 这个函数原型可能要改一下
int x509_basic_constraints_check(int ca, int path_len_cons, int cert_type) int x509_basic_constraints_check(int ca, int path_len_cons, int cert_type)
{ {
/* /*
@@ -1864,7 +1836,7 @@ int x509_basic_constraints_check(int ca, int path_len_cons, int cert_type)
error_print(); error_print();
return -1; return -1;
} }
if (path_len_cons < 0 || path_len_cons > 6) { if (path_len_cons < 0 || path_len_cons > X509_MAX_PATH_LEN_CONSTRAINT) {
error_print(); error_print();
return -1; return -1;
} }
@@ -1891,7 +1863,7 @@ int x509_basic_constraints_print(FILE *fp, int fmt, int ind, const char *label,
if ((ret = asn1_boolean_from_der(&val, &d, &dlen)) < 0) goto err; if ((ret = asn1_boolean_from_der(&val, &d, &dlen)) < 0) goto err;
if (ret) format_print(fp, fmt, ind, "cA: %s\n", asn1_boolean_name(val)); if (ret) format_print(fp, fmt, ind, "cA: %s\n", asn1_boolean_name(val));
else format_print(fp, fmt, ind, "cA: %s\n", asn1_boolean_name(0)); // 特殊对待，无论cA值是否编码均输出结果 //else format_print(fp, fmt, ind, "cA: %s\n", asn1_boolean_name(0));
if ((ret = asn1_int_from_der(&val, &d, &dlen)) < 0) goto err; if ((ret = asn1_int_from_der(&val, &d, &dlen)) < 0) goto err;
if (ret) format_print(fp, fmt, ind, "pathLenConstraint: %d\n", val); if (ret) format_print(fp, fmt, ind, "pathLenConstraint: %d\n", val);
if (asn1_length_is_zero(dlen) != 1) goto err; if (asn1_length_is_zero(dlen) != 1) goto err;
@@ -2108,8 +2080,8 @@ int x509_policy_constraints_from_der(
int x509_policy_constraints_check(const uint8_t *a, size_t alen) int x509_policy_constraints_check(const uint8_t *a, size_t alen)
{ {
error_print();
return -1; return -1;
} }
int x509_policy_constraints_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen) int x509_policy_constraints_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen)
@@ -2184,7 +2156,6 @@ int x509_ext_key_usage_from_der(int *oids, size_t *oids_cnt, size_t max_cnt, con
return 1; return 1;
} }
// 这个函数原型可能也要改一下
int x509_ext_key_usage_check(const int *oids, size_t oids_cnt, int cert_type) int x509_ext_key_usage_check(const int *oids, size_t oids_cnt, int cert_type)
{ {
int ret = -1; int ret = -1;
@@ -2290,9 +2261,13 @@ int x509_uri_as_distribution_point_name_to_der(const char *uri, size_t urilen,
{ {
int ret; int ret;
int tag = ASN1_TAG_EXPLICIT(X509_full_name); int tag = ASN1_TAG_EXPLICIT(X509_full_name);
if ((ret = x509_uri_as_general_names_to_der_ex(tag, uri, urilen, out, outlen)) != 1) {
if (ret < 0) error_print(); // 检查一下，是否有必要支持返回0 if (urilen == 0) {
return ret; return 0;
}
if (x509_uri_as_general_names_to_der_ex(tag, uri, urilen, out, outlen) != 1) {
error_print();
return -1;
} }
return 1; return 1;
} }
@@ -2879,8 +2854,6 @@ int x509_authority_info_access_from_der(
int ret; int ret;
const uint8_t *d; const uint8_t *d;
size_t dlen; size_t dlen;
const uint8_t *ad;
size_t adlen;
if (!ca_issuers_uri || !ca_issuers_urilen || !ocsp_uri || !ocsp_urilen || !in || !(*in) || !inlen) { if (!ca_issuers_uri || !ca_issuers_urilen || !ocsp_uri || !ocsp_urilen || !in || !(*in) || !inlen) {
error_print(); error_print();
@@ -2974,6 +2947,3 @@ int x509_exts_add_authority_info_access(uint8_t *exts, size_t *extslen, size_t m
} }
return 1; return 1;
} }

177
src/x509_str.c
View File

@@ -17,34 +17,17 @@
#include <gmssl/oid.h> #include <gmssl/oid.h>
#include <gmssl/pem.h> #include <gmssl/pem.h>
#include <gmssl/asn1.h> #include <gmssl/asn1.h>
#include <gmssl/x509_str.h>
#include <gmssl/x509_req.h> #include <gmssl/x509_req.h>
#include <gmssl/x509_crl.h>
#include <gmssl/x509_ext.h>
#include <gmssl/x509.h> #include <gmssl/x509.h>
#include <gmssl/error.h> #include <gmssl/error.h>
#include <gmssl/file.h> #include <gmssl/file.h>
#include <gmssl/http.h>
#include <errno.h> #include <errno.h>
#include <sys/stat.h> #include <sys/stat.h>
/*
DirectoryString ::= CHOICE {
teletexString TeletexString (SIZE (1..MAX)),
printableString PrintableString (SIZE (1..MAX)),
universalString UniversalString (SIZE (1..MAX)),
utf8String UTF8String (SIZE (1..MAX)),
bmpString BMPString (SIZE (1..MAX)) }
BMPString has zeros!
"Cert" in BMPStirng is 00 43 00 65 00 72 00 74
RDN 中很多值都是这个类型，但是有特定的长度限制，因此这个函数应该增加一个长度限制选项。
*/
int x509_cert_new_from_file(uint8_t **out, size_t *outlen, const char *file) int x509_cert_new_from_file(uint8_t **out, size_t *outlen, const char *file)
{ {
int ret = -1; int ret = -1;
@@ -145,3 +128,157 @@ int x509_req_new_from_file(uint8_t **req, size_t *reqlen, const char *file)
fclose(fp); fclose(fp);
return 1; return 1;
} }
int x509_crl_new_from_uri(uint8_t **crl, size_t *crl_len, const char *uri, size_t urilen)
{
int ret = -1;
char *uristr = NULL;
uint8_t *buf = NULL;
size_t buflen;
const uint8_t *p;
if (!(uristr = malloc(urilen + 1))) {
error_print();
return -1;
}
memcpy(uristr, uri, urilen);
uristr[urilen] = 0;
if (http_get(uristr, NULL, &buflen, 0) < 0) {
error_print();
goto end;
}
if (!buflen) {
error_print();
goto end;
}
if (!(buf = malloc(buflen))) {
error_print();
goto end;
}
if (http_get(uristr, buf, &buflen, buflen) != 1) {
error_print();
goto end;
}
p = buf;
if (x509_crl_from_der((const uint8_t **)crl, crl_len, &p, &buflen) != 1) {
error_print();
goto end;
}
buf = NULL;
ret = 1;
end:
if (uristr) free(uristr);
if (buf) free(buf);
return ret;
}
int x509_crl_new_from_cert(uint8_t **crl, size_t *crl_len, const uint8_t *cert, size_t certlen)
{
int ret;
const uint8_t *exts;
size_t extslen;
int critical;
const uint8_t *val;
size_t vlen;
const char *uri;
size_t urilen;
int reason;
const uint8_t *crl_issuer;
size_t crl_issuer_len;
if ((ret = x509_cert_get_exts(cert, certlen, &exts, &extslen)) != 1) {
if (ret < 0) error_print();
return ret;
}
if ((ret = x509_exts_get_ext_by_oid(exts, extslen,
OID_ce_crl_distribution_points, &critical, &val, &vlen)) != 1) {
if (ret < 0) error_print();
return ret;
}
if (x509_uri_as_distribution_points_from_der(&uri, &urilen,
&reason, &crl_issuer, &crl_issuer_len, &val, &vlen) != 1
|| asn1_length_is_zero(vlen) != 1) {
error_print();
return -1;
}
if (!uri) {
*crl = NULL;
*crl_len = 0;
return 0;
}
if (x509_crl_new_from_uri(crl, crl_len, uri, urilen) != 1) {
error_print();
return -1;
}
return 1;
}
int x509_cert_check_crl(const uint8_t *cert, size_t certlen, const uint8_t *cacert, size_t cacertlen,
const char *ca_signer_id, size_t ca_signer_id_len)
{
int ret = -1;
uint8_t *crl = NULL;
size_t crl_len = 0;
const uint8_t *crl_issuer;
size_t crl_issuer_len;
const uint8_t *issuer;
size_t issuer_len;
const uint8_t *serial;
size_t serial_len;
time_t revoke_date;
const uint8_t *crl_entry_exts;
size_t crl_entry_exts_len;
// download CRL and do basic validation
if (x509_crl_new_from_cert(&crl, &crl_len, cert, certlen) != 1) {
error_print();
return -1;
}
if (x509_crl_check(crl, crl_len, time(NULL)) != 1) {
error_print();
goto end;
}
if (x509_cert_get_issuer_and_serial_number(cert, certlen, &issuer, &issuer_len, &serial, &serial_len) != 1) {
error_print();
goto end;
}
// make sure CRL's issuer is the certificate issuer
if (x509_crl_get_issuer(crl, crl_len, &crl_issuer, &crl_issuer_len) != 1) {
error_print();
goto end;
}
if (x509_name_equ(issuer, issuer_len, crl_issuer, crl_issuer_len) != 1) {
error_print();
goto end;
}
// verify CRL
if (x509_crl_verify_by_ca_cert(crl, crl_len, cacert, cacertlen, ca_signer_id, ca_signer_id_len) != 1) {
error_print();
goto end;
}
// check if the certificate in the CRL
if ((ret = x509_crl_find_revoked_cert_by_serial_number(crl, crl_len, serial, serial_len,
&revoke_date, &crl_entry_exts, &crl_entry_exts_len)) < 0) {
error_print();
goto end;
}
if (ret == 1) {
ret = -1;
error_print();
goto end;
}
ret = 1;
end:
if (crl) free(crl);
return ret;
}

1
tests/x509_exttest.c
View File

@@ -14,7 +14,6 @@
#include <gmssl/oid.h> #include <gmssl/oid.h>
#include <gmssl/x509_alg.h> #include <gmssl/x509_alg.h>
#include <gmssl/x509_oid.h> #include <gmssl/x509_oid.h>
#include <gmssl/x509_str.h>
#include <gmssl/x509_ext.h> #include <gmssl/x509_ext.h>
#include <gmssl/x509.h> #include <gmssl/x509.h>
#include <gmssl/rand.h> #include <gmssl/rand.h>

1
tests/x509_strtest.c
View File

@@ -12,7 +12,6 @@
#include <string.h> #include <string.h>
#include <stdlib.h> #include <stdlib.h>
#include <gmssl/oid.h> #include <gmssl/oid.h>
#include <gmssl/x509_str.h>
#include <gmssl/x509_ext.h> #include <gmssl/x509_ext.h>
#include <gmssl/x509.h> #include <gmssl/x509.h>
#include <gmssl/rand.h> #include <gmssl/rand.h>