mirror of https://github.com/openssl/openssl.git
392 lines
12 KiB
C
392 lines
12 KiB
C
/*
|
|
* Copyright 2007-2020 The OpenSSL Project Authors. All Rights Reserved.
|
|
* Copyright Nokia 2007-2019
|
|
* Copyright Siemens AG 2015-2019
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <openssl/cmp_util.h>
|
|
#include "cmp_local.h" /* just for decls of internal functions defined here */
|
|
#include <openssl/cmperr.h>
|
|
#include <openssl/err.h> /* should be implied by cmperr.h */
|
|
#include <openssl/x509v3.h>
|
|
|
|
DEFINE_STACK_OF(X509)
|
|
DEFINE_STACK_OF(X509_OBJECT)
|
|
DEFINE_STACK_OF(ASN1_UTF8STRING)
|
|
|
|
/*
|
|
* use trace API for CMP-specific logging, prefixed by "CMP " and severity
|
|
*/
|
|
|
|
int OSSL_CMP_log_open(void) /* is designed to be idempotent */
|
|
{
|
|
#ifndef OPENSSL_NO_STDIO
|
|
BIO *bio = BIO_new_fp(stdout, BIO_NOCLOSE);
|
|
|
|
if (bio != NULL && OSSL_trace_set_channel(OSSL_TRACE_CATEGORY_CMP, bio))
|
|
return 1;
|
|
BIO_free(bio);
|
|
#endif
|
|
CMPerr(0, CMP_R_NO_STDIO);
|
|
return 0;
|
|
}
|
|
|
|
void OSSL_CMP_log_close(void) /* is designed to be idempotent */
|
|
{
|
|
(void)OSSL_trace_set_channel(OSSL_TRACE_CATEGORY_CMP, NULL);
|
|
}
|
|
|
|
/* return >= 0 if level contains logging level, possibly preceded by "CMP " */
|
|
#define max_level_len 5 /* = max length of the below strings, e.g., "EMERG" */
|
|
static OSSL_CMP_severity parse_level(const char *level)
|
|
{
|
|
const char *end_level = strchr(level, ':');
|
|
int len;
|
|
char level_copy[max_level_len + 1];
|
|
|
|
if (end_level == NULL)
|
|
return -1;
|
|
|
|
if (strncmp(level, OSSL_CMP_LOG_PREFIX,
|
|
strlen(OSSL_CMP_LOG_PREFIX)) == 0)
|
|
level += strlen(OSSL_CMP_LOG_PREFIX);
|
|
len = end_level - level;
|
|
if (len > max_level_len)
|
|
return -1;
|
|
OPENSSL_strlcpy(level_copy, level, len + 1);
|
|
return
|
|
strcmp(level_copy, "EMERG") == 0 ? OSSL_CMP_LOG_EMERG :
|
|
strcmp(level_copy, "ALERT") == 0 ? OSSL_CMP_LOG_ALERT :
|
|
strcmp(level_copy, "CRIT") == 0 ? OSSL_CMP_LOG_CRIT :
|
|
strcmp(level_copy, "ERROR") == 0 ? OSSL_CMP_LOG_ERR :
|
|
strcmp(level_copy, "WARN") == 0 ? OSSL_CMP_LOG_WARNING :
|
|
strcmp(level_copy, "NOTE") == 0 ? OSSL_CMP_LOG_NOTICE :
|
|
strcmp(level_copy, "INFO") == 0 ? OSSL_CMP_LOG_INFO :
|
|
strcmp(level_copy, "DEBUG") == 0 ? OSSL_CMP_LOG_DEBUG :
|
|
-1;
|
|
}
|
|
|
|
const char *ossl_cmp_log_parse_metadata(const char *buf,
|
|
OSSL_CMP_severity *level,
|
|
char **func, char **file, int *line)
|
|
{
|
|
const char *p_func = buf;
|
|
const char *p_file = buf == NULL ? NULL : strchr(buf, ':');
|
|
const char *p_level = buf;
|
|
const char *msg = buf;
|
|
|
|
*level = -1;
|
|
*func = NULL;
|
|
*file = NULL;
|
|
*line = 0;
|
|
|
|
if (p_file != NULL) {
|
|
const char *p_line = strchr(++p_file, ':');
|
|
|
|
if ((*level = parse_level(buf)) < 0 && p_line != NULL) {
|
|
/* check if buf contains location info and logging level */
|
|
char *p_level_tmp = (char *)p_level;
|
|
const long line_number = strtol(++p_line, &p_level_tmp, 10);
|
|
|
|
p_level = p_level_tmp;
|
|
if (p_level > p_line && *(p_level++) == ':') {
|
|
if ((*level = parse_level(p_level)) >= 0) {
|
|
*func = OPENSSL_strndup(p_func, p_file - 1 - p_func);
|
|
*file = OPENSSL_strndup(p_file, p_line - 1 - p_file);
|
|
/* no real problem if OPENSSL_strndup() returns NULL */
|
|
*line = (int)line_number;
|
|
msg = strchr(p_level, ':') + 1;
|
|
if (*msg == ' ')
|
|
msg++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return msg;
|
|
}
|
|
|
|
#define UNKNOWN_FUNC "(unknown function)" /* the default for OPENSSL_FUNC */
|
|
/*
|
|
* substitute fallback if component/function name is NULL or empty or contains
|
|
* just pseudo-information "(unknown function)" due to -pedantic and macros.h
|
|
*/
|
|
static const char *improve_location_name(const char *func, const char *fallback)
|
|
{
|
|
if (fallback == NULL)
|
|
return func == NULL ? UNKNOWN_FUNC : func;
|
|
|
|
return func == NULL || *func == '\0' || strcmp(func, UNKNOWN_FUNC) == 0
|
|
? fallback : func;
|
|
}
|
|
|
|
int OSSL_CMP_print_to_bio(BIO *bio, const char *component, const char *file,
|
|
int line, OSSL_CMP_severity level, const char *msg)
|
|
{
|
|
const char *level_string =
|
|
level == OSSL_CMP_LOG_EMERG ? "EMERG" :
|
|
level == OSSL_CMP_LOG_ALERT ? "ALERT" :
|
|
level == OSSL_CMP_LOG_CRIT ? "CRIT" :
|
|
level == OSSL_CMP_LOG_ERR ? "error" :
|
|
level == OSSL_CMP_LOG_WARNING ? "warning" :
|
|
level == OSSL_CMP_LOG_NOTICE ? "NOTE" :
|
|
level == OSSL_CMP_LOG_INFO ? "info" :
|
|
level == OSSL_CMP_LOG_DEBUG ? "DEBUG" : "(unknown level)";
|
|
|
|
#ifndef NDEBUG
|
|
if (BIO_printf(bio, "%s:%s:%d:", improve_location_name(component, "CMP"),
|
|
file, line) < 0)
|
|
return 0;
|
|
#endif
|
|
return BIO_printf(bio, OSSL_CMP_LOG_PREFIX"%s: %s\n",
|
|
level_string, msg) >= 0;
|
|
}
|
|
|
|
#define ERR_PRINT_BUF_SIZE 4096
|
|
/* this is similar to ERR_print_errors_cb, but uses the CMP-specific cb type */
|
|
void OSSL_CMP_print_errors_cb(OSSL_CMP_log_cb_t log_fn)
|
|
{
|
|
unsigned long err;
|
|
char msg[ERR_PRINT_BUF_SIZE];
|
|
const char *file = NULL, *func = NULL, *data = NULL;
|
|
int line, flags;
|
|
|
|
while ((err = ERR_get_error_all(&file, &line, &func, &data, &flags)) != 0) {
|
|
const char *component =
|
|
improve_location_name(func, ERR_lib_error_string(err));
|
|
|
|
if (!(flags & ERR_TXT_STRING))
|
|
data = NULL;
|
|
BIO_snprintf(msg, sizeof(msg), "%s%s%s", ERR_reason_error_string(err),
|
|
data == NULL || *data == '\0' ? "" : " : ",
|
|
data == NULL ? "" : data);
|
|
if (log_fn == NULL) {
|
|
#ifndef OPENSSL_NO_STDIO
|
|
BIO *bio = BIO_new_fp(stderr, BIO_NOCLOSE);
|
|
|
|
if (bio != NULL) {
|
|
OSSL_CMP_print_to_bio(bio, component, file, line,
|
|
OSSL_CMP_LOG_ERR, msg);
|
|
BIO_free(bio);
|
|
}
|
|
#else
|
|
/* CMPerr(0, CMP_R_NO_STDIO) makes no sense during error printing */
|
|
#endif
|
|
} else {
|
|
if (log_fn(component, file, line, OSSL_CMP_LOG_ERR, msg) <= 0)
|
|
break; /* abort outputting the error report */
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* functions manipulating lists of certificates etc.
|
|
* these functions could be generally useful.
|
|
*/
|
|
|
|
int ossl_cmp_sk_X509_add1_cert(STACK_OF(X509) *sk, X509 *cert,
|
|
int no_dup, int prepend)
|
|
{
|
|
if (sk == NULL) {
|
|
CMPerr(0, CMP_R_NULL_ARGUMENT);
|
|
return 0;
|
|
}
|
|
if (no_dup) {
|
|
/*
|
|
* not using sk_X509_set_cmp_func() and sk_X509_find()
|
|
* because this re-orders the certs on the stack
|
|
*/
|
|
int i;
|
|
|
|
for (i = 0; i < sk_X509_num(sk); i++) {
|
|
if (X509_cmp(sk_X509_value(sk, i), cert) == 0)
|
|
return 1;
|
|
}
|
|
}
|
|
if (!X509_up_ref(cert))
|
|
return 0;
|
|
if (!sk_X509_insert(sk, cert, prepend ? 0 : -1)) {
|
|
X509_free(cert);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int ossl_cmp_sk_X509_add1_certs(STACK_OF(X509) *sk, STACK_OF(X509) *certs,
|
|
int no_self_issued, int no_dups, int prepend)
|
|
/* compiler would allow 'const' for the list of certs, yet they are up-ref'ed */
|
|
{
|
|
int i;
|
|
|
|
if (sk == NULL) {
|
|
CMPerr(0, CMP_R_NULL_ARGUMENT);
|
|
return 0;
|
|
}
|
|
for (i = 0; i < sk_X509_num(certs); i++) { /* certs may be NULL */
|
|
X509 *cert = sk_X509_value(certs, i);
|
|
|
|
if (!no_self_issued || X509_check_issued(cert, cert) != X509_V_OK) {
|
|
if (!ossl_cmp_sk_X509_add1_cert(sk, cert, no_dups, prepend))
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int ossl_cmp_X509_STORE_add1_certs(X509_STORE *store, STACK_OF(X509) *certs,
|
|
int only_self_issued)
|
|
{
|
|
int i;
|
|
|
|
if (store == NULL) {
|
|
CMPerr(0, CMP_R_NULL_ARGUMENT);
|
|
return 0;
|
|
}
|
|
if (certs == NULL)
|
|
return 1;
|
|
for (i = 0; i < sk_X509_num(certs); i++) {
|
|
X509 *cert = sk_X509_value(certs, i);
|
|
|
|
if (!only_self_issued || X509_check_issued(cert, cert) == X509_V_OK)
|
|
if (!X509_STORE_add_cert(store, cert)) /* ups cert ref counter */
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*-
|
|
* Builds up the certificate chain of certs as high up as possible using
|
|
* the given list of certs containing all possible intermediate certificates and
|
|
* optionally the (possible) trust anchor(s). See also ssl_add_cert_chain().
|
|
*
|
|
* Intended use of this function is to find all the certificates above the trust
|
|
* anchor needed to verify an EE's own certificate. Those are supposed to be
|
|
* included in the ExtraCerts field of every first sent message of a transaction
|
|
* when MSG_SIG_ALG is utilized.
|
|
*
|
|
* NOTE: This allocates a stack and increments the reference count of each cert,
|
|
* so when not needed any more the stack and all its elements should be freed.
|
|
* NOTE: in case there is more than one possibility for the chain,
|
|
* OpenSSL seems to take the first one, check X509_verify_cert() for details.
|
|
*
|
|
* returns a pointer to a stack of (up_ref'ed) X509 certificates containing:
|
|
* - the EE certificate given in the function arguments (cert)
|
|
* - all intermediate certificates up the chain toward the trust anchor
|
|
* whereas the (self-signed) trust anchor is not included
|
|
* returns NULL on error
|
|
*/
|
|
STACK_OF(X509) *ossl_cmp_build_cert_chain(STACK_OF(X509) *certs, X509 *cert)
|
|
{
|
|
STACK_OF(X509) *chain = NULL, *result = NULL;
|
|
X509_STORE *store = X509_STORE_new();
|
|
X509_STORE_CTX *csc = NULL;
|
|
|
|
if (certs == NULL || cert == NULL || store == NULL) {
|
|
CMPerr(0, CMP_R_NULL_ARGUMENT);
|
|
goto err;
|
|
}
|
|
|
|
csc = X509_STORE_CTX_new();
|
|
if (csc == NULL)
|
|
goto err;
|
|
|
|
if (!ossl_cmp_X509_STORE_add1_certs(store, certs, 0)
|
|
|| !X509_STORE_CTX_init(csc, store, cert, NULL))
|
|
goto err;
|
|
|
|
(void)ERR_set_mark();
|
|
/*
|
|
* ignore return value as it would fail without trust anchor given in store
|
|
*/
|
|
(void)X509_verify_cert(csc);
|
|
|
|
/* don't leave any new errors in the queue */
|
|
(void)ERR_pop_to_mark();
|
|
|
|
chain = X509_STORE_CTX_get0_chain(csc);
|
|
|
|
/* result list to store the up_ref'ed not self-issued certificates */
|
|
if ((result = sk_X509_new_null()) == NULL)
|
|
goto err;
|
|
if (!ossl_cmp_sk_X509_add1_certs(result, chain, 1 /* no self-issued */,
|
|
1 /* no duplicates */, 0)) {
|
|
sk_X509_free(result);
|
|
result = NULL;
|
|
}
|
|
|
|
err:
|
|
X509_STORE_free(store);
|
|
X509_STORE_CTX_free(csc);
|
|
return result;
|
|
}
|
|
|
|
int ossl_cmp_sk_ASN1_UTF8STRING_push_str(STACK_OF(ASN1_UTF8STRING) *sk,
|
|
const char *text)
|
|
{
|
|
ASN1_UTF8STRING *utf8string;
|
|
|
|
if (!ossl_assert(sk != NULL && text != NULL))
|
|
return 0;
|
|
if ((utf8string = ASN1_UTF8STRING_new()) == NULL)
|
|
return 0;
|
|
if (!ASN1_STRING_set(utf8string, text, -1))
|
|
goto err;
|
|
if (!sk_ASN1_UTF8STRING_push(sk, utf8string))
|
|
goto err;
|
|
return 1;
|
|
|
|
err:
|
|
ASN1_UTF8STRING_free(utf8string);
|
|
return 0;
|
|
}
|
|
|
|
int ossl_cmp_asn1_octet_string_set1(ASN1_OCTET_STRING **tgt,
|
|
const ASN1_OCTET_STRING *src)
|
|
{
|
|
ASN1_OCTET_STRING *new;
|
|
if (tgt == NULL) {
|
|
CMPerr(0, CMP_R_NULL_ARGUMENT);
|
|
return 0;
|
|
}
|
|
if (*tgt == src) /* self-assignment */
|
|
return 1;
|
|
|
|
if (src != NULL) {
|
|
if ((new = ASN1_OCTET_STRING_dup(src)) == NULL)
|
|
return 0;
|
|
} else {
|
|
new = NULL;
|
|
}
|
|
|
|
ASN1_OCTET_STRING_free(*tgt);
|
|
*tgt = new;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_cmp_asn1_octet_string_set1_bytes(ASN1_OCTET_STRING **tgt,
|
|
const unsigned char *bytes, int len)
|
|
{
|
|
ASN1_OCTET_STRING *new = NULL;
|
|
|
|
if (tgt == NULL) {
|
|
CMPerr(0, CMP_R_NULL_ARGUMENT);
|
|
return 0;
|
|
}
|
|
if (bytes != NULL) {
|
|
if ((new = ASN1_OCTET_STRING_new()) == NULL
|
|
|| !(ASN1_OCTET_STRING_set(new, bytes, len))) {
|
|
ASN1_OCTET_STRING_free(new);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
ASN1_OCTET_STRING_free(*tgt);
|
|
*tgt = new;
|
|
return 1;
|
|
}
|