-/* crypto/o_str.c -*- mode:C; c-file-style: "eay" -*- */
/*
- * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project
- * 2003.
- */
-/* ====================================================================
- * Copyright (c) 2003 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+ * Copyright 2003-2017 The OpenSSL Project Authors. All Rights Reserved.
*
+ * 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 <ctype.h>
-#include <e_os.h>
-#include "o_str.h"
+#include "e_os.h"
+#include <limits.h>
+#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
-#if !defined(OPENSSL_IMPLEMENTS_strncasecmp) && \
- !defined(OPENSSL_SYSNAME_WIN32) && !defined(OPENSSL_SYSNAME_WINCE) && \
- !defined(NETWARE_CLIB)
-# include <strings.h>
-#endif
+#define DEFAULT_SEPARATOR ':'
+#define CH_ZERO '\0'
-int OPENSSL_strncasecmp(const char *str1, const char *str2, size_t n)
+char *CRYPTO_strdup(const char *str, const char* file, int line)
{
-#if defined(OPENSSL_IMPLEMENTS_strncasecmp)
- while (*str1 && *str2 && n) {
- int res = toupper(*str1) - toupper(*str2);
- if (res)
- return res < 0 ? -1 : 1;
- str1++;
- str2++;
- n--;
+ char *ret;
+
+ if (str == NULL)
+ return NULL;
+ ret = CRYPTO_malloc(strlen(str) + 1, file, line);
+ if (ret != NULL)
+ strcpy(ret, str);
+ return ret;
+}
+
+char *CRYPTO_strndup(const char *str, size_t s, const char* file, int line)
+{
+ size_t maxlen;
+ char *ret;
+
+ if (str == NULL)
+ return NULL;
+
+ maxlen = OPENSSL_strnlen(str, s);
+
+ ret = CRYPTO_malloc(maxlen + 1, file, line);
+ if (ret) {
+ memcpy(ret, str, maxlen);
+ ret[maxlen] = CH_ZERO;
}
- if (n == 0)
+ return ret;
+}
+
+void *CRYPTO_memdup(const void *data, size_t siz, const char* file, int line)
+{
+ void *ret;
+
+ if (data == NULL || siz >= INT_MAX)
+ return NULL;
+
+ ret = CRYPTO_malloc(siz, file, line);
+ if (ret == NULL) {
+ CRYPTOerr(CRYPTO_F_CRYPTO_MEMDUP, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ return memcpy(ret, data, siz);
+}
+
+size_t OPENSSL_strnlen(const char *str, size_t maxlen)
+{
+ const char *p;
+
+ for (p = str; maxlen-- != 0 && *p != CH_ZERO; ++p) ;
+
+ return p - str;
+}
+
+size_t OPENSSL_strlcpy(char *dst, const char *src, size_t size)
+{
+ size_t l = 0;
+ for (; size > 1 && *src; size--) {
+ *dst++ = *src++;
+ l++;
+ }
+ if (size)
+ *dst = CH_ZERO;
+ return l + strlen(src);
+}
+
+size_t OPENSSL_strlcat(char *dst, const char *src, size_t size)
+{
+ size_t l = 0;
+ for (; size > 0 && *dst; size--, dst++)
+ l++;
+ return l + OPENSSL_strlcpy(dst, src, size);
+}
+
+int OPENSSL_hexchar2int(unsigned char c)
+{
+#ifdef CHARSET_EBCDIC
+ c = os_toebcdic[c];
+#endif
+
+ switch (c) {
+ case '0':
return 0;
- if (*str1)
+ case '1':
return 1;
- if (*str2)
- return -1;
- return 0;
-#else
- /*
- * Recursion hazard warning! Whenever strncasecmp is #defined as
- * OPENSSL_strncasecmp, OPENSSL_IMPLEMENTS_strncasecmp must be defined as
- * well.
- */
- return strncasecmp(str1, str2, n);
-#endif
+ case '2':
+ return 2;
+ case '3':
+ return 3;
+ case '4':
+ return 4;
+ case '5':
+ return 5;
+ case '6':
+ return 6;
+ case '7':
+ return 7;
+ case '8':
+ return 8;
+ case '9':
+ return 9;
+ case 'a': case 'A':
+ return 0x0A;
+ case 'b': case 'B':
+ return 0x0B;
+ case 'c': case 'C':
+ return 0x0C;
+ case 'd': case 'D':
+ return 0x0D;
+ case 'e': case 'E':
+ return 0x0E;
+ case 'f': case 'F':
+ return 0x0F;
+ }
+ return -1;
}
-int OPENSSL_strcasecmp(const char *str1, const char *str2)
+static int hexstr2buf_sep(unsigned char *buf, size_t buf_n, size_t *buflen,
+ const char *str, const char sep)
{
-#if defined(OPENSSL_IMPLEMENTS_strncasecmp)
- return OPENSSL_strncasecmp(str1, str2, (size_t)-1);
-#else
- return strcasecmp(str1, str2);
+ unsigned char *q;
+ unsigned char ch, cl;
+ int chi, cli;
+ const unsigned char *p;
+ size_t cnt;
+
+ for (p = (const unsigned char *)str, q = buf, cnt = 0; *p; ) {
+ ch = *p++;
+ /* A separator of CH_ZERO means there is no separator */
+ if (ch == sep && sep != CH_ZERO)
+ continue;
+ cl = *p++;
+ if (!cl) {
+ CRYPTOerr(0, CRYPTO_R_ODD_NUMBER_OF_DIGITS);
+ return 0;
+ }
+ cli = OPENSSL_hexchar2int(cl);
+ chi = OPENSSL_hexchar2int(ch);
+ if (cli < 0 || chi < 0) {
+ CRYPTOerr(0, CRYPTO_R_ILLEGAL_HEX_DIGIT);
+ return 0;
+ }
+ cnt++;
+ if (q != NULL) {
+ if (cnt > buf_n) {
+ CRYPTOerr(0, CRYPTO_R_TOO_SMALL_BUFFER);
+ return 0;
+ }
+ *q++ = (unsigned char)((chi << 4) | cli);
+ }
+ }
+
+ if (buflen != NULL)
+ *buflen = cnt;
+ return 1;
+}
+
+/*
+ * Given a string of hex digits convert to a buffer
+ */
+int OPENSSL_hexstr2buf_ex(unsigned char *buf, size_t buf_n, size_t *buflen,
+ const char *str)
+{
+ return hexstr2buf_sep(buf, buf_n, buflen, str, DEFAULT_SEPARATOR);
+}
+
+unsigned char *openssl_hexstr2buf_sep(const char *str, long *buflen,
+ const char sep)
+{
+ unsigned char *buf;
+ size_t buf_n, tmp_buflen;
+
+ buf_n = strlen(str) >> 1;
+ if ((buf = OPENSSL_malloc(buf_n)) == NULL) {
+ CRYPTOerr(0, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ if (buflen != NULL)
+ *buflen = 0;
+ tmp_buflen = 0;
+ if (hexstr2buf_sep(buf, buf_n, &tmp_buflen, str, sep)) {
+ if (buflen != NULL)
+ *buflen = (long)tmp_buflen;
+ return buf;
+ }
+ OPENSSL_free(buf);
+ return NULL;
+}
+
+unsigned char *OPENSSL_hexstr2buf(const char *str, long *buflen)
+{
+ return openssl_hexstr2buf_sep(str, buflen, DEFAULT_SEPARATOR);
+}
+
+static int buf2hexstr_sep(char *str, size_t str_n, size_t *strlen,
+ const unsigned char *buf, size_t buflen,
+ const char sep)
+{
+ static const char hexdig[] = "0123456789ABCDEF";
+ const unsigned char *p;
+ char *q;
+ size_t i;
+ int has_sep = (sep != CH_ZERO);
+ size_t len = has_sep ? buflen * 3 : 1 + buflen * 2;
+
+ if (strlen != NULL)
+ *strlen = len;
+ if (str == NULL)
+ return 1;
+
+ if (str_n < (unsigned long)len) {
+ CRYPTOerr(0, CRYPTO_R_TOO_SMALL_BUFFER);
+ return 0;
+ }
+
+ q = str;
+ for (i = 0, p = buf; i < buflen; i++, p++) {
+ *q++ = hexdig[(*p >> 4) & 0xf];
+ *q++ = hexdig[*p & 0xf];
+ if (has_sep)
+ *q++ = sep;
+ }
+ if (has_sep)
+ --q;
+ *q = CH_ZERO;
+
+#ifdef CHARSET_EBCDIC
+ ebcdic2ascii(str, str, q - str - 1);
#endif
+ return 1;
}
-int OPENSSL_memcmp(const void *v1, const void *v2, size_t n)
+int OPENSSL_buf2hexstr_ex(char *str, size_t str_n, size_t *strlen,
+ const unsigned char *buf, size_t buflen)
{
- const unsigned char *c1 = v1, *c2 = v2;
- int ret = 0;
+ return buf2hexstr_sep(str, str_n, strlen, buf, buflen, DEFAULT_SEPARATOR);
+}
- while (n && (ret = *c1 - *c2) == 0)
- n--, c1++, c2++;
+char *openssl_buf2hexstr_sep(const unsigned char *buf, long buflen, char sep)
+{
+ char *tmp;
+ size_t tmp_n;
- return ret;
+ if (buflen == 0)
+ return OPENSSL_zalloc(1);
+
+ tmp_n = (sep != CH_ZERO) ? buflen * 3 : 1 + buflen * 2;
+ if ((tmp = OPENSSL_malloc(tmp_n)) == NULL) {
+ CRYPTOerr(0, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ if (buf2hexstr_sep(tmp, tmp_n, NULL, buf, buflen, sep))
+ return tmp;
+ OPENSSL_free(tmp);
+ return NULL;
+}
+
+
+/*
+ * Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
+ * hex representation @@@ (Contents of buffer are always kept in ASCII, also
+ * on EBCDIC machines)
+ */
+char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen)
+{
+ return openssl_buf2hexstr_sep(buf, buflen, ':');
+}
+
+int openssl_strerror_r(int errnum, char *buf, size_t buflen)
+{
+#if defined(_MSC_VER) && _MSC_VER>=1400
+ return !strerror_s(buf, buflen, errnum);
+#elif defined(_GNU_SOURCE)
+ char *err;
+
+ /*
+ * GNU strerror_r may not actually set buf.
+ * It can return a pointer to some (immutable) static string in which case
+ * buf is left unused.
+ */
+ err = strerror_r(errnum, buf, buflen);
+ if (err == NULL || buflen == 0)
+ return 0;
+ /*
+ * If err is statically allocated, err != buf and we need to copy the data.
+ * If err points somewhere inside buf, OPENSSL_strlcpy can handle this,
+ * since src and dest are not annotated with __restrict and the function
+ * reads src byte for byte and writes to dest.
+ * If err == buf we do not have to copy anything.
+ */
+ if (err != buf)
+ OPENSSL_strlcpy(buf, err, buflen);
+ return 1;
+#elif (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) || \
+ (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 600)
+ /*
+ * We can use "real" strerror_r. The OpenSSL version differs in that it
+ * gives 1 on success and 0 on failure for consistency with other OpenSSL
+ * functions. Real strerror_r does it the other way around
+ */
+ return !strerror_r(errnum, buf, buflen);
+#else
+ char *err;
+
+ /* Fall back to non-thread safe strerror()...its all we can do */
+ if (buflen < 2)
+ return 0;
+ err = strerror(errnum);
+ /* Can this ever happen? */
+ if (err == NULL)
+ return 0;
+ OPENSSL_strlcpy(buf, err, buflen);
+ return 1;
+#endif
}
projects / openssl.git / blobdiff