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b85d53c167
Don't add 1 if strchr returns NULL PR update Fixes #19279 Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com> Reviewed-by: Hugo Landau <hlandau@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/19282)
286 lines
8.8 KiB
C
286 lines
8.8 KiB
C
/*
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* Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright Nokia 2007-2019
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* Copyright Siemens AG 2015-2019
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <openssl/cmp_util.h>
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#include "cmp_local.h" /* just for decls of internal functions defined here */
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#include <openssl/cmperr.h>
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#include <openssl/err.h> /* should be implied by cmperr.h */
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#include <openssl/x509v3.h>
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/*
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* use trace API for CMP-specific logging, prefixed by "CMP " and severity
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*/
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int OSSL_CMP_log_open(void) /* is designed to be idempotent */
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{
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#ifdef OPENSSL_NO_TRACE
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return 1;
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#else
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# ifndef OPENSSL_NO_STDIO
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BIO *bio = BIO_new_fp(stdout, BIO_NOCLOSE);
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if (bio != NULL && OSSL_trace_set_channel(OSSL_TRACE_CATEGORY_CMP, bio))
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return 1;
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BIO_free(bio);
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# endif
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ERR_raise(ERR_LIB_CMP, CMP_R_NO_STDIO);
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return 0;
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#endif
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}
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void OSSL_CMP_log_close(void) /* is designed to be idempotent */
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{
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(void)OSSL_trace_set_channel(OSSL_TRACE_CATEGORY_CMP, NULL);
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}
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/* return >= 0 if level contains logging level, possibly preceded by "CMP " */
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#define max_level_len 5 /* = max length of the below strings, e.g., "EMERG" */
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static OSSL_CMP_severity parse_level(const char *level)
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{
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const char *end_level = strchr(level, ':');
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int len;
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char level_copy[max_level_len + 1];
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if (end_level == NULL)
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return -1;
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if (HAS_PREFIX(level, OSSL_CMP_LOG_PREFIX))
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level += strlen(OSSL_CMP_LOG_PREFIX);
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len = end_level - level;
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if (len > max_level_len)
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return -1;
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OPENSSL_strlcpy(level_copy, level, len + 1);
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return
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strcmp(level_copy, "EMERG") == 0 ? OSSL_CMP_LOG_EMERG :
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strcmp(level_copy, "ALERT") == 0 ? OSSL_CMP_LOG_ALERT :
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strcmp(level_copy, "CRIT") == 0 ? OSSL_CMP_LOG_CRIT :
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strcmp(level_copy, "ERROR") == 0 ? OSSL_CMP_LOG_ERR :
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strcmp(level_copy, "WARN") == 0 ? OSSL_CMP_LOG_WARNING :
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strcmp(level_copy, "NOTE") == 0 ? OSSL_CMP_LOG_NOTICE :
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strcmp(level_copy, "INFO") == 0 ? OSSL_CMP_LOG_INFO :
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strcmp(level_copy, "DEBUG") == 0 ? OSSL_CMP_LOG_DEBUG :
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-1;
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}
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const char *ossl_cmp_log_parse_metadata(const char *buf,
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OSSL_CMP_severity *level,
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char **func, char **file, int *line)
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{
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const char *p_func = buf;
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const char *p_file = buf == NULL ? NULL : strchr(buf, ':');
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const char *p_level = buf;
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const char *msg = buf;
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*level = -1;
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*func = NULL;
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*file = NULL;
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*line = 0;
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if (p_file != NULL) {
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const char *p_line = strchr(++p_file, ':');
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if ((*level = parse_level(buf)) < 0 && p_line != NULL) {
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/* check if buf contains location info and logging level */
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char *p_level_tmp = (char *)p_level;
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const long line_number = strtol(++p_line, &p_level_tmp, 10);
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p_level = p_level_tmp;
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if (p_level > p_line && *(p_level++) == ':') {
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if ((*level = parse_level(p_level)) >= 0) {
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*func = OPENSSL_strndup(p_func, p_file - 1 - p_func);
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*file = OPENSSL_strndup(p_file, p_line - 1 - p_file);
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/* no real problem if OPENSSL_strndup() returns NULL */
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*line = (int)line_number;
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msg = strchr(p_level, ':');
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if (msg != NULL && *++msg == ' ')
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msg++;
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}
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}
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}
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}
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return msg;
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}
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#define UNKNOWN_FUNC "(unknown function)" /* the default for OPENSSL_FUNC */
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/*
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* substitute fallback if component/function name is NULL or empty or contains
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* just pseudo-information "(unknown function)" due to -pedantic and macros.h
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*/
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static const char *improve_location_name(const char *func, const char *fallback)
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{
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if (fallback == NULL)
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return func == NULL ? UNKNOWN_FUNC : func;
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return func == NULL || *func == '\0' || strcmp(func, UNKNOWN_FUNC) == 0
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? fallback : func;
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}
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int OSSL_CMP_print_to_bio(BIO *bio, const char *component, const char *file,
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int line, OSSL_CMP_severity level, const char *msg)
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{
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const char *level_string =
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level == OSSL_CMP_LOG_EMERG ? "EMERG" :
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level == OSSL_CMP_LOG_ALERT ? "ALERT" :
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level == OSSL_CMP_LOG_CRIT ? "CRIT" :
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level == OSSL_CMP_LOG_ERR ? "error" :
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level == OSSL_CMP_LOG_WARNING ? "warning" :
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level == OSSL_CMP_LOG_NOTICE ? "NOTE" :
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level == OSSL_CMP_LOG_INFO ? "info" :
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level == OSSL_CMP_LOG_DEBUG ? "DEBUG" : "(unknown level)";
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#ifndef NDEBUG
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if (BIO_printf(bio, "%s:%s:%d:", improve_location_name(component, "CMP"),
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file, line) < 0)
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return 0;
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#endif
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return BIO_printf(bio, OSSL_CMP_LOG_PREFIX"%s: %s\n",
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level_string, msg) >= 0;
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}
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#define ERR_PRINT_BUF_SIZE 4096
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/* this is similar to ERR_print_errors_cb, but uses the CMP-specific cb type */
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void OSSL_CMP_print_errors_cb(OSSL_CMP_log_cb_t log_fn)
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{
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unsigned long err;
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char msg[ERR_PRINT_BUF_SIZE];
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const char *file = NULL, *func = NULL, *data = NULL;
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int line, flags;
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while ((err = ERR_get_error_all(&file, &line, &func, &data, &flags)) != 0) {
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const char *component =
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improve_location_name(func, ERR_lib_error_string(err));
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unsigned long reason = ERR_GET_REASON(err);
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const char *rs = NULL;
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char rsbuf[256];
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#ifndef OPENSSL_NO_ERR
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if (ERR_SYSTEM_ERROR(err)) {
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if (openssl_strerror_r(reason, rsbuf, sizeof(rsbuf)))
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rs = rsbuf;
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} else {
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rs = ERR_reason_error_string(err);
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}
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#endif
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if (rs == NULL) {
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BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", reason);
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rs = rsbuf;
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}
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if (data != NULL && (flags & ERR_TXT_STRING) != 0)
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BIO_snprintf(msg, sizeof(msg), "%s:%s", rs, data);
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else
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BIO_snprintf(msg, sizeof(msg), "%s", rs);
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if (log_fn == NULL) {
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#ifndef OPENSSL_NO_STDIO
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BIO *bio = BIO_new_fp(stderr, BIO_NOCLOSE);
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if (bio != NULL) {
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OSSL_CMP_print_to_bio(bio, component, file, line,
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OSSL_CMP_LOG_ERR, msg);
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BIO_free(bio);
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}
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#else
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/* ERR_raise(ERR_LIB_CMP, CMP_R_NO_STDIO) makes no sense during error printing */
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#endif
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} else {
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if (log_fn(component, file, line, OSSL_CMP_LOG_ERR, msg) <= 0)
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break; /* abort outputting the error report */
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}
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}
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}
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int ossl_cmp_X509_STORE_add1_certs(X509_STORE *store, STACK_OF(X509) *certs,
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int only_self_signed)
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{
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int i;
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if (store == NULL) {
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ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
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return 0;
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}
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if (certs == NULL)
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return 1;
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for (i = 0; i < sk_X509_num(certs); i++) {
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X509 *cert = sk_X509_value(certs, i);
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if (!only_self_signed || X509_self_signed(cert, 0) == 1)
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if (!X509_STORE_add_cert(store, cert)) /* ups cert ref counter */
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return 0;
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}
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return 1;
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}
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int ossl_cmp_sk_ASN1_UTF8STRING_push_str(STACK_OF(ASN1_UTF8STRING) *sk,
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const char *text, int len)
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{
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ASN1_UTF8STRING *utf8string;
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if (!ossl_assert(sk != NULL && text != NULL))
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return 0;
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if ((utf8string = ASN1_UTF8STRING_new()) == NULL)
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return 0;
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if (!ASN1_STRING_set(utf8string, text, len))
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goto err;
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if (!sk_ASN1_UTF8STRING_push(sk, utf8string))
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goto err;
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return 1;
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err:
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ASN1_UTF8STRING_free(utf8string);
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return 0;
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}
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int ossl_cmp_asn1_octet_string_set1(ASN1_OCTET_STRING **tgt,
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const ASN1_OCTET_STRING *src)
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{
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ASN1_OCTET_STRING *new;
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if (tgt == NULL) {
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ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
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return 0;
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}
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if (*tgt == src) /* self-assignment */
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return 1;
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if (src != NULL) {
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if ((new = ASN1_OCTET_STRING_dup(src)) == NULL)
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return 0;
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} else {
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new = NULL;
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}
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ASN1_OCTET_STRING_free(*tgt);
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*tgt = new;
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return 1;
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}
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int ossl_cmp_asn1_octet_string_set1_bytes(ASN1_OCTET_STRING **tgt,
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const unsigned char *bytes, int len)
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{
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ASN1_OCTET_STRING *new = NULL;
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if (tgt == NULL) {
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ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
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return 0;
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}
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if (bytes != NULL) {
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if ((new = ASN1_OCTET_STRING_new()) == NULL
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|| !(ASN1_OCTET_STRING_set(new, bytes, len))) {
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ASN1_OCTET_STRING_free(new);
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return 0;
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}
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}
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ASN1_OCTET_STRING_free(*tgt);
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*tgt = new;
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return 1;
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}
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