Coverage Report

Created: 2024-03-28 05:37

/src/openssl/crypto/o_str.c
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Count
Source (jump to first uncovered line)
1
/*
2
 * Copyright 2003-2017 The OpenSSL Project Authors. All Rights Reserved.
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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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10
#include "e_os.h"
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#include <limits.h>
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#include <openssl/crypto.h>
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#include "internal/cryptlib.h"
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15
char *CRYPTO_strdup(const char *str, const char* file, int line)
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112k
{
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112k
    char *ret;
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19
112k
    if (str == NULL)
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0
        return NULL;
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112k
    ret = CRYPTO_malloc(strlen(str) + 1, file, line);
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112k
    if (ret != NULL)
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112k
        strcpy(ret, str);
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112k
    return ret;
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112k
}
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27
char *CRYPTO_strndup(const char *str, size_t s, const char* file, int line)
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0
{
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0
    size_t maxlen;
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0
    char *ret;
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32
0
    if (str == NULL)
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0
        return NULL;
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35
0
    maxlen = OPENSSL_strnlen(str, s);
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37
0
    ret = CRYPTO_malloc(maxlen + 1, file, line);
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0
    if (ret) {
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0
        memcpy(ret, str, maxlen);
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0
        ret[maxlen] = '\0';
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0
    }
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0
    return ret;
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0
}
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void *CRYPTO_memdup(const void *data, size_t siz, const char* file, int line)
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230k
{
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230k
    void *ret;
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230k
    if (data == NULL || siz >= INT_MAX)
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0
        return NULL;
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230k
    ret = CRYPTO_malloc(siz, file, line);
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230k
    if (ret == NULL) {
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0
        CRYPTOerr(CRYPTO_F_CRYPTO_MEMDUP, ERR_R_MALLOC_FAILURE);
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0
        return NULL;
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0
    }
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230k
    return memcpy(ret, data, siz);
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230k
}
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size_t OPENSSL_strnlen(const char *str, size_t maxlen)
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5.63M
{
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5.63M
    const char *p;
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64
17.4M
    for (p = str; maxlen-- != 0 && *p != '\0'; ++p) ;
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66
5.63M
    return p - str;
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5.63M
}
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size_t OPENSSL_strlcpy(char *dst, const char *src, size_t size)
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10.6M
{
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10.6M
    size_t l = 0;
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77.4M
    for (; size > 1 && *src; size--) {
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66.8M
        *dst++ = *src++;
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66.8M
        l++;
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66.8M
    }
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10.6M
    if (size)
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10.6M
        *dst = '\0';
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10.6M
    return l + strlen(src);
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10.6M
}
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size_t OPENSSL_strlcat(char *dst, const char *src, size_t size)
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8.94M
{
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8.94M
    size_t l = 0;
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43.0M
    for (; size > 0 && *dst; size--, dst++)
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34.1M
        l++;
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8.94M
    return l + OPENSSL_strlcpy(dst, src, size);
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8.94M
}
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int OPENSSL_hexchar2int(unsigned char c)
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0
{
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#ifdef CHARSET_EBCDIC
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    c = os_toebcdic[c];
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#endif
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0
    switch (c) {
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0
    case '0':
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0
        return 0;
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0
    case '1':
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0
        return 1;
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0
    case '2':
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0
        return 2;
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0
    case '3':
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0
        return 3;
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0
    case '4':
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0
          return 4;
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0
    case '5':
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0
          return 5;
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0
    case '6':
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0
          return 6;
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0
    case '7':
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0
          return 7;
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0
    case '8':
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0
          return 8;
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0
    case '9':
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0
          return 9;
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0
    case 'a': case 'A':
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0
          return 0x0A;
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0
    case 'b': case 'B':
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0
          return 0x0B;
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0
    case 'c': case 'C':
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0
          return 0x0C;
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0
    case 'd': case 'D':
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0
          return 0x0D;
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0
    case 'e': case 'E':
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0
          return 0x0E;
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0
    case 'f': case 'F':
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0
          return 0x0F;
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0
    }
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0
    return -1;
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0
}
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/*
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 * Give a string of hex digits convert to a buffer
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 */
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int OPENSSL_hexstr2buf_ex(unsigned char *buf, size_t buf_n, size_t *buflen,
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                          const char *str)
137
0
{
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0
    unsigned char *q;
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0
    unsigned char ch, cl;
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0
    int chi, cli;
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0
    const unsigned char *p;
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0
    size_t cnt;
143
144
0
    for (p = (const unsigned char *)str, q = buf, cnt = 0; *p; ) {
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0
        ch = *p++;
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0
        if (ch == ':')
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0
            continue;
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0
        cl = *p++;
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0
        if (!cl) {
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0
            CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF_EX,
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0
                      CRYPTO_R_ODD_NUMBER_OF_DIGITS);
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0
            return 0;
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0
        }
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0
        cli = OPENSSL_hexchar2int(cl);
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0
        chi = OPENSSL_hexchar2int(ch);
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0
        if (cli < 0 || chi < 0) {
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0
            CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF_EX,
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0
                      CRYPTO_R_ILLEGAL_HEX_DIGIT);
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0
            return 0;
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0
        }
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0
        cnt++;
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0
        if (q != NULL) {
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0
            if (cnt > buf_n) {
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0
                CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF_EX,
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0
                          CRYPTO_R_TOO_SMALL_BUFFER);
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0
                return 0;
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0
            }
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0
            *q++ = (unsigned char)((chi << 4) | cli);
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0
        }
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0
    }
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172
0
    if (buflen != NULL)
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0
        *buflen = cnt;
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0
    return 1;
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0
}
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177
unsigned char *OPENSSL_hexstr2buf(const char *str, long *buflen)
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0
{
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0
    unsigned char *buf;
180
0
    size_t buf_n, tmp_buflen;
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182
0
    buf_n = strlen(str) >> 1;
183
0
    if ((buf = OPENSSL_malloc(buf_n)) == NULL) {
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0
        CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF, ERR_R_MALLOC_FAILURE);
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0
        return NULL;
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0
    }
187
188
0
    if (buflen != NULL)
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0
        *buflen = 0;
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0
    tmp_buflen = 0;
191
0
    if (OPENSSL_hexstr2buf_ex(buf, buf_n, &tmp_buflen, str)) {
192
0
        if (buflen != NULL)
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0
            *buflen = (long)tmp_buflen;
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0
        return buf;
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0
    }
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0
    OPENSSL_free(buf);
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0
    return NULL;
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0
}
199
200
int OPENSSL_buf2hexstr_ex(char *str, size_t str_n, size_t *strlen,
201
                          const unsigned char *buf, size_t buflen)
202
64.9k
{
203
64.9k
    static const char hexdig[] = "0123456789ABCDEF";
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64.9k
    const unsigned char *p;
205
64.9k
    char *q;
206
64.9k
    size_t i;
207
208
64.9k
    if (strlen != NULL)
209
0
        *strlen = buflen * 3;
210
64.9k
    if (str == NULL)
211
0
        return 1;
212
213
64.9k
    if (str_n < (unsigned long)buflen * 3) {
214
0
        CRYPTOerr(CRYPTO_F_OPENSSL_BUF2HEXSTR_EX, CRYPTO_R_TOO_SMALL_BUFFER);
215
0
        return 0;
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0
    }
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64.9k
    q = str;
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657k
    for (i = 0, p = buf; i < buflen; i++, p++) {
220
592k
        *q++ = hexdig[(*p >> 4) & 0xf];
221
592k
        *q++ = hexdig[*p & 0xf];
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592k
        *q++ = ':';
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592k
    }
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64.9k
    q[-1] = 0;
225
#ifdef CHARSET_EBCDIC
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    ebcdic2ascii(str, str, q - str - 1);
227
#endif
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64.9k
    return 1;
229
64.9k
}
230
231
/*
232
 * Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
233
 * hex representation @@@ (Contents of buffer are always kept in ASCII, also
234
 * on EBCDIC machines)
235
 */
236
char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen)
237
65.0k
{
238
65.0k
    char *tmp;
239
65.0k
    size_t tmp_n;
240
241
65.0k
    if (buflen == 0)
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160
        return OPENSSL_zalloc(1);
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244
64.9k
    tmp_n = buflen * 3;
245
64.9k
    if ((tmp = OPENSSL_malloc(tmp_n)) == NULL) {
246
0
        CRYPTOerr(CRYPTO_F_OPENSSL_BUF2HEXSTR, ERR_R_MALLOC_FAILURE);
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0
        return NULL;
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0
    }
249
250
64.9k
    if (OPENSSL_buf2hexstr_ex(tmp, tmp_n, NULL, buf, buflen))
251
64.9k
        return tmp;
252
0
    OPENSSL_free(tmp);
253
0
    return NULL;
254
64.9k
}
255
256
int openssl_strerror_r(int errnum, char *buf, size_t buflen)
257
328k
{
258
#if defined(_MSC_VER) && _MSC_VER>=1400
259
    return !strerror_s(buf, buflen, errnum);
260
#elif defined(_GNU_SOURCE)
261
    char *err;
262
263
    /*
264
     * GNU strerror_r may not actually set buf.
265
     * It can return a pointer to some (immutable) static string in which case
266
     * buf is left unused.
267
     */
268
    err = strerror_r(errnum, buf, buflen);
269
    if (err == NULL || buflen == 0)
270
        return 0;
271
    /*
272
     * If err is statically allocated, err != buf and we need to copy the data.
273
     * If err points somewhere inside buf, OPENSSL_strlcpy can handle this,
274
     * since src and dest are not annotated with __restrict and the function
275
     * reads src byte for byte and writes to dest.
276
     * If err == buf we do not have to copy anything.
277
     */
278
    if (err != buf)
279
        OPENSSL_strlcpy(buf, err, buflen);
280
    return 1;
281
#elif (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) || \
282
      (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 600)
283
    /*
284
     * We can use "real" strerror_r. The OpenSSL version differs in that it
285
     * gives 1 on success and 0 on failure for consistency with other OpenSSL
286
     * functions. Real strerror_r does it the other way around
287
     */
288
328k
    return !strerror_r(errnum, buf, buflen);
289
#else
290
    char *err;
291
292
    /* Fall back to non-thread safe strerror()...its all we can do */
293
    if (buflen < 2)
294
        return 0;
295
    err = strerror(errnum);
296
    /* Can this ever happen? */
297
    if (err == NULL)
298
        return 0;
299
    OPENSSL_strlcpy(buf, err, buflen);
300
    return 1;
301
#endif
302
328k
}