Files
GmSSL/src/tls_ocsp.c
2026-05-27 21:55:11 +08:00

333 lines
8.8 KiB
C

/*
* Copyright 2014-2026 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
*/
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <gmssl/rand.h>
#include <gmssl/x509.h>
#include <gmssl/error.h>
#include <gmssl/sm2.h>
#include <gmssl/sm3.h>
#include <gmssl/sm4.h>
#include <gmssl/pem.h>
#include <gmssl/mem.h>
#include <gmssl/tls.h>
/*
5. status_request
ClientHello.status_request
ext_data := CertificateStatusRequest;
struct {
uint8 status_type = ocsp(1);
opaque request<0..2^16-1>;
} CertificateStatusRequest;
request.data := OCSPStatusRequest;
struct {
ResponderID responder_id_list<0..2^16-1>;
Extensions request_extensions;
} OCSPStatusRequest;
*/
int tls_ocsp_status_request_to_bytes(
const uint8_t *responder_id_list, size_t responder_id_list_len, // optional
const uint8_t *request_exts, size_t request_exts_len, // optinoal
uint8_t **out, size_t *outlen)
{
if (!outlen) {
error_print();
return -1;
}
tls_uint16array_to_bytes(responder_id_list, responder_id_list_len, out, outlen);
tls_uint16array_to_bytes(request_exts, request_exts_len, out, outlen);
return 1;
}
int tls_ocsp_status_request_from_bytes(
const uint8_t **responder_id_list, size_t *responder_id_list_len,
const uint8_t **request_exts, size_t *request_exts_len,
const uint8_t **in, size_t *inlen)
{
if (!in || !(*in) || !inlen) {
error_print();
return -1;
}
if (tls_uint16array_from_bytes(responder_id_list, responder_id_list_len, in, inlen) != 1
|| tls_uint16array_from_bytes(request_exts, request_exts_len, in, inlen) != 1) {
error_print();
return -1;
}
return 1;
}
int tls_ocsp_status_request_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *request, size_t request_len)
{
const uint8_t *responder_id_list;
size_t responder_id_list_len;
const uint8_t *request_exts;
size_t request_exts_len;
format_print(fp, fmt, ind, "%s\n", label);
ind += 4;
if (!request) {
format_print(fp, fmt, ind, "(null)\n");
return 1;
}
if (tls_uint16array_from_bytes(&responder_id_list, &responder_id_list_len, &request, &request_len) != 1
|| tls_uint16array_from_bytes(&request_exts, &request_exts_len, &request, &request_len) != 1) {
error_print();
return -1;
}
while (responder_id_list_len) {
const uint8_t *responder_id;
size_t responder_id_len;
if (tls_uint16array_from_bytes(&responder_id, &responder_id_len,
&responder_id_list, &responder_id_list_len) != 1) {
error_print();
return -1;
}
format_bytes(fp, fmt, ind + 4, "ResponderID", responder_id, responder_id_len);
}
while (request_exts_len) {
int ext_type;
const uint8_t *ext_data;
size_t ext_datalen;
if (tls_ext_from_bytes(&ext_type, &ext_data, &ext_datalen, &request_exts, &request_exts_len) != 1) {
error_print();
return -1;
}
// TODO: print
}
return 1;
}
int tls_client_status_request_ext_to_bytes(int status_type,
const uint8_t *responder_id_list, size_t responder_id_list_len,
const uint8_t *request_exts, size_t request_exts_len,
uint8_t **out, size_t *outlen)
{
int ext_type = TLS_extension_status_request;
size_t ext_datalen = 0;
uint8_t request[256];
size_t request_len = 0;
uint8_t *p;
uint8_t **pp = NULL;
size_t len;
if (!outlen) {
error_print();
return -1;
}
if (status_type != TLS_certificate_status_type_ocsp) {
error_print();
return -1;
}
if (responder_id_list && responder_id_list_len
&& request_exts && request_exts_len) {
if (tls_ocsp_status_request_to_bytes(
responder_id_list, responder_id_list_len,
request_exts, request_exts_len, NULL, &request_len) != 1) {
error_print();
return -1;
}
if (request_len > sizeof(request)) {
error_print();
return -1;
}
p = request;
request_len = 0;
if (tls_ocsp_status_request_to_bytes(
responder_id_list, responder_id_list_len,
request_exts, request_exts_len, &p, &request_len) != 1) {
error_print();
return -1;
}
}
if (out) {
p = *out;
pp = &p;
}
tls_ext_to_bytes(ext_type, NULL, 0, out, &len);
tls_uint8_to_bytes(status_type, out, &ext_datalen);
tls_uint16array_to_bytes(request, request_len, out, &ext_datalen);
tls_ext_to_bytes(ext_type, NULL, ext_datalen, pp, outlen);
return 1;
}
int tls_client_status_request_from_bytes(int *status_type,
const uint8_t **responder_id_list, size_t *responder_id_list_len,
const uint8_t **request_exts, size_t *request_exts_len,
const uint8_t *ext_data, size_t ext_datalen)
{
uint8_t status;
const uint8_t *request;
size_t request_len;
if (!status_type || !responder_id_list || !responder_id_list_len
|| !request_exts || !request_exts_len) {
error_print();
return -1;
}
if (!ext_data || !ext_datalen) {
error_print();
return -1;
}
if (tls_uint8_from_bytes(&status, &ext_data, &ext_datalen) != 1
|| tls_uint16array_from_bytes(&request, &request_len, &ext_data, &ext_datalen) != 1
|| tls_length_is_zero(ext_datalen) != 1) {
error_print();
return -1;
}
if (status != TLS_certificate_status_type_ocsp) {
error_print();
return -1;
}
*status_type = status;
*responder_id_list = NULL;
*responder_id_list_len = 0;
*request_exts = NULL;
*request_exts_len = 0;
if (request) {
if (tls_ocsp_status_request_from_bytes(
responder_id_list, responder_id_list_len,
request_exts, request_exts_len, &request, &request_len) != 1
|| tls_length_is_zero(request_len) != 1) {
error_print();
return -1;
}
}
return 1;
}
int tls_client_status_request_print(FILE *fp, int fmt, int ind, const uint8_t *ext_data, size_t ext_datalen)
{
uint8_t status_type;
const uint8_t *request;
size_t request_len;
if (tls_uint8_from_bytes(&status_type, &ext_data, &ext_datalen) != 1
|| tls_uint16array_from_bytes(&request, &request_len, &ext_data, &ext_datalen) != 1) {
error_print();
return -1;
}
format_print(fp, fmt, ind, "status_type: %s (%d)\n", status_type == TLS_certificate_status_type_ocsp ? "ocsp" : NULL, status_type);
tls_ocsp_status_request_print(fp, fmt, ind, "request", request, request_len);
if (ext_datalen) {
format_print(fp, fmt, ind, "left: %zu bytes\n", ext_datalen);
}
return 1;
}
/*
Certificate.certificate_list.CertificateEntry.status_request
ext_data := CertificateStatus;
struct {
CertificateStatusType status_type;
opaque response<1..2^24-1>;
} CertificateStatus;
*/
int tls_server_status_request_ext_to_bytes(const uint8_t *ocsp_response, size_t ocsp_response_len,
uint8_t **out, size_t *outlen)
{
int ext_type = TLS_extension_status_request;
size_t ext_datalen = 0;
uint8_t **pp = out;
size_t len;
if (!ocsp_response || !ocsp_response_len || !outlen) {
error_print();
return -1;
}
tls_ext_to_bytes(ext_type, NULL, 0, out, &len);
tls_uint24array_to_bytes(ocsp_response, ocsp_response_len, out, &ext_datalen);
tls_ext_to_bytes(ext_type, NULL, ext_datalen, pp, outlen);
return 1;
}
int tls_server_status_request_from_bytes(const uint8_t **ocsp_response, size_t *ocsp_response_len,
const uint8_t *ext_data, size_t ext_datalen)
{
if (!ocsp_response || !ocsp_response_len || !ext_data || !ext_datalen) {
error_print();
return -1;
}
if (tls_uint24array_from_bytes(ocsp_response, ocsp_response_len, &ext_data, &ext_datalen) != 1
|| tls_length_is_zero(ext_datalen) != 1) {
error_print();
return -1;
}
return 1;
}
int tls_server_status_request_print(FILE *fp, int fmt, int ind, const uint8_t *ext_data, size_t ext_datalen)
{
const uint8_t *ocsp_response;
size_t ocsp_response_len;
if (tls_uint24array_from_bytes(&ocsp_response, &ocsp_response_len, &ext_data, &ext_datalen) != 1) {
error_print();
return -1;
}
format_bytes(fp, fmt, ind, "ocsp_response", ocsp_response, ocsp_response_len);
if (ext_datalen) {
error_print();
return -1;
}
return 1;
}
int tls13_set_client_status_request(TLS_CONNECT *conn,
const uint8_t *status_request_responder_id_list, size_t status_request_responder_id_list_len, // optional
const uint8_t *status_request_exts, size_t status_request_exts_len) // optional
{
if (!conn) {
error_print();
return -1;
}
if (!conn->is_client) {
error_print();
return -1;
}
conn->status_request_responder_id_list = status_request_responder_id_list;
conn->status_request_responder_id_list_len = status_request_responder_id_list_len;
conn->status_request_exts = status_request_exts;
conn->status_request_exts_len = status_request_exts_len;
conn->status_request = 1;
return 1;
}
int ocsp_response_verify(const uint8_t *ocsp_response, size_t ocsp_response_len,
const uint8_t *ca_certs, size_t ca_certs_len)
{
error_print();
return 1;
}
int tls_ocsp_response_match_status_request(
const uint8_t *status_request_ocsp_response, size_t status_request_ocsp_response_len,
const uint8_t *responder_id_list, size_t responder_id_list_len,
const uint8_t *request_exts, size_t request_exts_len)
{
error_print();
return 1;
}