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Upgrade libsrtp from 2.0.0 to 2.3.0, with source code. 4.0.79
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111 changed files with 45307 additions and 5 deletions
212
trunk/3rdparty/libsrtp-2-fit/test/util.c
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trunk/3rdparty/libsrtp-2-fit/test/util.c
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/*
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* util.c
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*
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* Utilities used by the test apps
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*
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* John A. Foley
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* Cisco Systems, Inc.
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*/
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/*
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*
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* Copyright (c) 2014-2017, Cisco Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* Neither the name of the Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "config.h"
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#include "util.h"
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#include <string.h>
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#include <stdint.h>
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/* include space for null terminator */
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char bit_string[MAX_PRINT_STRING_LEN + 1];
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static inline int hex_char_to_nibble(uint8_t c)
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{
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switch (c) {
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case ('0'):
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return 0x0;
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case ('1'):
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return 0x1;
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case ('2'):
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return 0x2;
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case ('3'):
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return 0x3;
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case ('4'):
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return 0x4;
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case ('5'):
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return 0x5;
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case ('6'):
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return 0x6;
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case ('7'):
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return 0x7;
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case ('8'):
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return 0x8;
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case ('9'):
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return 0x9;
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case ('a'):
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return 0xa;
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case ('A'):
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return 0xa;
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case ('b'):
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return 0xb;
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case ('B'):
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return 0xb;
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case ('c'):
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return 0xc;
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case ('C'):
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return 0xc;
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case ('d'):
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return 0xd;
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case ('D'):
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return 0xd;
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case ('e'):
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return 0xe;
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case ('E'):
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return 0xe;
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case ('f'):
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return 0xf;
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case ('F'):
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return 0xf;
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default:
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return -1; /* this flags an error */
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}
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/* NOTREACHED */
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return -1; /* this keeps compilers from complaining */
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}
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uint8_t nibble_to_hex_char(uint8_t nibble)
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{
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char buf[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
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return buf[nibble & 0xF];
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}
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/*
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* hex_string_to_octet_string converts a hexadecimal string
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* of length 2 * len to a raw octet string of length len
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*/
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int hex_string_to_octet_string(char *raw, char *hex, int len)
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{
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uint8_t x;
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int tmp;
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int hex_len;
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hex_len = 0;
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while (hex_len < len) {
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tmp = hex_char_to_nibble(hex[0]);
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if (tmp == -1) {
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return hex_len;
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}
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x = (tmp << 4);
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hex_len++;
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tmp = hex_char_to_nibble(hex[1]);
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if (tmp == -1) {
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return hex_len;
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}
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x |= (tmp & 0xff);
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hex_len++;
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*raw++ = x;
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hex += 2;
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}
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return hex_len;
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}
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char *octet_string_hex_string(const void *s, int length)
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{
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const uint8_t *str = (const uint8_t *)s;
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int i;
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/* double length, since one octet takes two hex characters */
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length *= 2;
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/* truncate string if it would be too long */
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if (length > MAX_PRINT_STRING_LEN) {
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length = MAX_PRINT_STRING_LEN;
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}
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for (i = 0; i < length; i += 2) {
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bit_string[i] = nibble_to_hex_char(*str >> 4);
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bit_string[i + 1] = nibble_to_hex_char(*str++ & 0xF);
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}
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bit_string[i] = 0; /* null terminate string */
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return bit_string;
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}
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static const char b64chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"abcdefghijklmnopqrstuvwxyz0123456789+/";
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static int base64_block_to_octet_triple(char *out, char *in)
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{
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unsigned char sextets[4] = { 0 };
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int j = 0;
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int i;
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for (i = 0; i < 4; i++) {
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char *p = strchr(b64chars, in[i]);
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if (p != NULL) {
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sextets[i] = p - b64chars;
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} else {
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j++;
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}
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}
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out[0] = (sextets[0] << 2) | (sextets[1] >> 4);
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if (j < 2) {
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out[1] = (sextets[1] << 4) | (sextets[2] >> 2);
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}
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if (j < 1) {
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out[2] = (sextets[2] << 6) | sextets[3];
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}
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return j;
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}
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int base64_string_to_octet_string(char *out, int *pad, char *in, int len)
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{
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int k = 0;
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int i = 0;
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int j = 0;
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if (len % 4 != 0) {
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return 0;
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}
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while (i < len && j == 0) {
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j = base64_block_to_octet_triple(out + k, in + i);
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k += 3;
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i += 4;
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}
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*pad = j;
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return i;
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}
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