{ERR_PACK(ERR_LIB_CRYPTO, 0, CRYPTO_R_TOO_MANY_BYTES), "too many bytes"},
{ERR_PACK(ERR_LIB_CRYPTO, 0, CRYPTO_R_TOO_MANY_RECORDS),
"too many records"},
+ {ERR_PACK(ERR_LIB_CRYPTO, 0, CRYPTO_R_TOO_SMALL_BUFFER),
+ "too small buffer"},
{ERR_PACK(ERR_LIB_CRYPTO, 0, CRYPTO_R_ZERO_LENGTH_NUMBER),
"zero length number"},
{0, NULL}
CRYPTO_F_GET_PROVIDER_STORE:133:get_provider_store
CRYPTO_F_OPENSSL_ATEXIT:114:OPENSSL_atexit
CRYPTO_F_OPENSSL_BUF2HEXSTR:117:OPENSSL_buf2hexstr
+CRYPTO_F_OPENSSL_BUF2HEXSTR_EX:153:
CRYPTO_F_OPENSSL_FOPEN:119:openssl_fopen
CRYPTO_F_OPENSSL_HEXSTR2BUF:118:OPENSSL_hexstr2buf
+CRYPTO_F_OPENSSL_HEXSTR2BUF_EX:154:
CRYPTO_F_OPENSSL_INIT_CRYPTO:116:OPENSSL_init_crypto
CRYPTO_F_OPENSSL_LH_NEW:126:OPENSSL_LH_new
CRYPTO_F_OPENSSL_SK_DEEP_COPY:127:OPENSSL_sk_deep_copy
CRYPTO_R_STRING_TOO_LONG:112:string too long
CRYPTO_R_TOO_MANY_BYTES:113:too many bytes
CRYPTO_R_TOO_MANY_RECORDS:114:too many records
+CRYPTO_R_TOO_SMALL_BUFFER:116:too small buffer
CRYPTO_R_ZERO_LENGTH_NUMBER:115:zero length number
CT_R_BASE64_DECODE_ERROR:108:base64 decode error
CT_R_INVALID_LOG_ID_LENGTH:100:invalid log id length
/*
* Give a string of hex digits convert to a buffer
*/
-unsigned char *OPENSSL_hexstr2buf(const char *str, long *len)
+int OPENSSL_hexstr2buf_ex(unsigned char *buf, size_t buf_n, size_t *buflen,
+ const char *str)
{
- unsigned char *hexbuf, *q;
+ unsigned char *q;
unsigned char ch, cl;
int chi, cli;
const unsigned char *p;
- size_t s;
+ size_t cnt;
- s = strlen(str);
- if ((hexbuf = OPENSSL_malloc(s >> 1)) == NULL) {
- CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- for (p = (const unsigned char *)str, q = hexbuf; *p; ) {
+ for (p = (const unsigned char *)str, q = buf, cnt = 0; *p; ) {
ch = *p++;
if (ch == ':')
continue;
cl = *p++;
if (!cl) {
- CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF,
+ CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF_EX,
CRYPTO_R_ODD_NUMBER_OF_DIGITS);
- OPENSSL_free(hexbuf);
- return NULL;
+ return 0;
}
cli = OPENSSL_hexchar2int(cl);
chi = OPENSSL_hexchar2int(ch);
if (cli < 0 || chi < 0) {
- OPENSSL_free(hexbuf);
- CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF, CRYPTO_R_ILLEGAL_HEX_DIGIT);
- return NULL;
+ CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF_EX,
+ CRYPTO_R_ILLEGAL_HEX_DIGIT);
+ return 0;
+ }
+ cnt++;
+ if (q != NULL) {
+ if (cnt > buf_n) {
+ CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF_EX,
+ CRYPTO_R_TOO_SMALL_BUFFER);
+ return 0;
+ }
+ *q++ = (unsigned char)((chi << 4) | cli);
}
- *q++ = (unsigned char)((chi << 4) | cli);
}
- if (len)
- *len = q - hexbuf;
- return hexbuf;
+ if (buflen != NULL)
+ *buflen = cnt;
+ return 1;
}
-/*
- * 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 *buffer, long len)
+unsigned char *OPENSSL_hexstr2buf(const char *str, long *buflen)
+{
+ unsigned char *buf;
+ size_t buf_n, tmp_buflen;
+
+ buf_n = strlen(str) >> 1;
+ if ((buf = OPENSSL_malloc(buf_n)) == NULL) {
+ CRYPTOerr(CRYPTO_F_OPENSSL_HEXSTR2BUF, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ if (buflen != NULL)
+ *buflen = 0;
+ tmp_buflen = 0;
+ if (OPENSSL_hexstr2buf_ex(buf, buf_n, &tmp_buflen, str)) {
+ if (buflen != NULL)
+ *buflen = (long)tmp_buflen;
+ return buf;
+ }
+ OPENSSL_free(buf);
+ return NULL;
+}
+
+int OPENSSL_buf2hexstr_ex(char *str, size_t str_n, size_t *strlen,
+ const unsigned char *buf, size_t buflen)
{
static const char hexdig[] = "0123456789ABCDEF";
- char *tmp, *q;
const unsigned char *p;
- int i;
+ char *q;
+ size_t i;
- if (len == 0)
- return OPENSSL_zalloc(1);
+ if (strlen != NULL)
+ *strlen = buflen * 3;
+ if (str == NULL)
+ return 1;
- if ((tmp = OPENSSL_malloc(len * 3)) == NULL) {
- CRYPTOerr(CRYPTO_F_OPENSSL_BUF2HEXSTR, ERR_R_MALLOC_FAILURE);
- return NULL;
+ if (str_n < (unsigned long)buflen * 3) {
+ CRYPTOerr(CRYPTO_F_OPENSSL_BUF2HEXSTR_EX, CRYPTO_R_TOO_SMALL_BUFFER);
+ return 0;
}
- q = tmp;
- for (i = 0, p = buffer; i < len; i++, p++) {
+
+ q = str;
+ for (i = 0, p = buf; i < buflen; i++, p++) {
*q++ = hexdig[(*p >> 4) & 0xf];
*q++ = hexdig[*p & 0xf];
*q++ = ':';
}
q[-1] = 0;
#ifdef CHARSET_EBCDIC
- ebcdic2ascii(tmp, tmp, q - tmp - 1);
+ ebcdic2ascii(str, str, q - str - 1);
#endif
+ return 1;
+}
+
+/*
+ * 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)
+{
+ char *tmp;
+ size_t tmp_n;
+
+ if (buflen == 0)
+ return OPENSSL_zalloc(1);
+
+ tmp_n = buflen * 3;
+ if ((tmp = OPENSSL_malloc(tmp_n)) == NULL) {
+ CRYPTOerr(CRYPTO_F_OPENSSL_BUF2HEXSTR, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
- return tmp;
+ if (OPENSSL_buf2hexstr_ex(tmp, tmp_n, NULL, buf, buflen))
+ return tmp;
+ OPENSSL_free(tmp);
+ return NULL;
}
int openssl_strerror_r(int errnum, char *buf, size_t buflen)
--- /dev/null
+=pod
+
+=head1 NAME
+
+OPENSSL_hexchar2int,
+OPENSSL_hexstr2buf_ex, OPENSSL_hexstr2buf,
+OPENSSL_buf2hexstr_ex, OPENSSL_buf2hexstr
+- Hex encoding and decoding functions
+
+=head1 SYNOPSIS
+
+ #include <openssl/crypto.h>
+
+ int OPENSSL_hexchar2int(unsigned char c);
+ int OPENSSL_hexstr2buf_ex(unsigned char *buf, size_t buf_n, long *buflen,
+ const char *str);
+ unsigned char *OPENSSL_hexstr2buf(const char *str, long *len);
+ int OPENSSL_buf2hexstr_ex(char *str, size_t str_n, size_t *strlen,
+ const unsigned char *buf, long buflen);
+ char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen);
+
+=head1 DESCRIPTION
+
+OPENSSL_hexchar2int() converts a hexadecimal character to its numeric
+equivalent.
+
+OPENSSL_hexstr2buf_ex() decodes the hex string B<str> and places the
+resulting string of bytes in the given I<buf>.
+I<buf_n> gives the size of the buffer.
+If I<buflen> is not NULL, it is filled in with the result length.
+To find out how large the result will be, call this function with NULL
+for I<buf>.
+Colons between two-character hex "bytes" are accepted and ignored.
+An odd number of hex digits is an error.
+
+OPENSSL_hexstr2buf() does the same thing as OPENSSL_hexstr2buf_ex(),
+but allocates the space for the result, and returns the result.
+The memory is allocated by calling OPENSSL_malloc() and should be
+released by calling OPENSSL_free().
+
+OPENSSL_buf2hexstr_ex() encodes the contents of the given I<buf> with
+length I<buflen> and places the resulting hexadecimal character string
+in the given I<str>.
+I<str_n> gives the size of the of the string buffer.
+If I<strlen> is not NULL, it is filled in with the result length.
+To find out how large the result will be, call this function with NULL
+for I<str>.
+
+OPENSSL_buf2hexstr() does the same thing as OPENSSL_buf2hexstr_ex(),
+but allocates the space for the result, and returns the result.
+The memory is allocated by calling OPENSSL_malloc() and should be
+released by calling OPENSSL_free().
+
+=head1 RETURN VALUES
+
+OPENSSL_hexchar2int returns the value of a decoded hex character,
+or -1 on error.
+
+OPENSSL_buf2hexstr() and OPENSSL_hexstr2buf()
+return a pointer to allocated memory, or NULL on error.
+
+OPENSSL_buf2hexstr_ex() and OPENSSL_hexstr2buf_ex() return 1 on
+success, or 0 on error.
+
+=head1 COPYRIGHT
+
+Copyright 2016-2019 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
+L<https://www.openssl.org/source/license.html>.
+
+=cut
CRYPTO_malloc, CRYPTO_zalloc, CRYPTO_realloc, CRYPTO_free,
OPENSSL_strdup, OPENSSL_strndup,
OPENSSL_memdup, OPENSSL_strlcpy, OPENSSL_strlcat,
-OPENSSL_hexstr2buf, OPENSSL_buf2hexstr, OPENSSL_hexchar2int,
CRYPTO_strdup, CRYPTO_strndup,
OPENSSL_mem_debug_push, OPENSSL_mem_debug_pop,
CRYPTO_mem_debug_push, CRYPTO_mem_debug_pop,
void OPENSSL_clear_free(void *str, size_t num)
void OPENSSL_cleanse(void *ptr, size_t len);
- unsigned char *OPENSSL_hexstr2buf(const char *str, long *len);
- char *OPENSSL_buf2hexstr(const unsigned char *buffer, long len);
- int OPENSSL_hexchar2int(unsigned char c);
-
void *CRYPTO_malloc(size_t num, const char *file, int line)
void *CRYPTO_zalloc(size_t num, const char *file, int line)
void *CRYPTO_realloc(void *p, size_t num, const char *file, int line)
OPENSSL_strlcat() and OPENSSL_strnlen() are equivalents of the common C
library functions and are provided for portability.
-OPENSSL_hexstr2buf() parses B<str> as a hex string and returns a
-pointer to the parsed value. The memory is allocated by calling
-OPENSSL_malloc() and should be released by calling OPENSSL_free().
-If B<len> is not NULL, it is filled in with the output length.
-Colons between two-character hex "bytes" are ignored.
-An odd number of hex digits is an error.
-
-OPENSSL_buf2hexstr() takes the specified buffer and length, and returns
-a hex string for value, or NULL on error.
-B<Buffer> cannot be NULL; if B<len> is 0 an empty string is returned.
-
-OPENSSL_hexchar2int() converts a character to the hexadecimal equivalent,
-or returns -1 on error.
-
If no allocations have been done, it is possible to "swap out" the default
implementations for OPENSSL_malloc(), OPENSSL_realloc and OPENSSL_free()
and replace them with alternate versions (hooks).
OPENSSL_clear_realloc(),
CRYPTO_malloc(), CRYPTO_zalloc(), CRYPTO_realloc(),
CRYPTO_clear_realloc(),
-OPENSSL_buf2hexstr(), OPENSSL_hexstr2buf(),
OPENSSL_strdup(), and OPENSSL_strndup()
return a pointer to allocated memory or NULL on error.
size_t OPENSSL_strlcpy(char *dst, const char *src, size_t siz);
size_t OPENSSL_strlcat(char *dst, const char *src, size_t siz);
size_t OPENSSL_strnlen(const char *str, size_t maxlen);
-char *OPENSSL_buf2hexstr(const unsigned char *buffer, long len);
-unsigned char *OPENSSL_hexstr2buf(const char *str, long *len);
+int OPENSSL_buf2hexstr_ex(char *str, size_t str_n, size_t *strlen,
+ const unsigned char *buf, size_t buflen);
+char *OPENSSL_buf2hexstr(const unsigned char *buf, long buflen);
+int OPENSSL_hexstr2buf_ex(unsigned char *buf, size_t buf_n, size_t *buflen,
+ const char *str);
+unsigned char *OPENSSL_hexstr2buf(const char *str, long *buflen);
int OPENSSL_hexchar2int(unsigned char c);
# define OPENSSL_MALLOC_MAX_NELEMS(type) (((1U<<(sizeof(int)*8-1))-1)/sizeof(type))
# define CRYPTO_F_GET_PROVIDER_STORE 0
# define CRYPTO_F_OPENSSL_ATEXIT 0
# define CRYPTO_F_OPENSSL_BUF2HEXSTR 0
+# define CRYPTO_F_OPENSSL_BUF2HEXSTR_EX 0
# define CRYPTO_F_OPENSSL_FOPEN 0
# define CRYPTO_F_OPENSSL_HEXSTR2BUF 0
+# define CRYPTO_F_OPENSSL_HEXSTR2BUF_EX 0
# define CRYPTO_F_OPENSSL_INIT_CRYPTO 0
# define CRYPTO_F_OPENSSL_LH_NEW 0
# define CRYPTO_F_OPENSSL_SK_DEEP_COPY 0
# define CRYPTO_R_STRING_TOO_LONG 112
# define CRYPTO_R_TOO_MANY_BYTES 113
# define CRYPTO_R_TOO_MANY_RECORDS 114
+# define CRYPTO_R_TOO_SMALL_BUFFER 116
# define CRYPTO_R_ZERO_LENGTH_NUMBER 115
#endif
EC_GROUP_new_by_curve_name_ex 4816 3_0_0 EXIST::FUNCTION:EC
EC_KEY_new_ex 4817 3_0_0 EXIST::FUNCTION:EC
EC_KEY_new_by_curve_name_ex 4818 3_0_0 EXIST::FUNCTION:EC
+OPENSSL_hexstr2buf_ex 4819 3_0_0 EXIST::FUNCTION:
+OPENSSL_buf2hexstr_ex 4820 3_0_0 EXIST::FUNCTION:
projects / openssl.git / commitdiff