1 /* Copyright (c) 2015, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15 #include "test_util.h"
16
17 #include <ostream>
18
19 #include "../internal.h"
20
21
hexdump(FILE * fp,const char * msg,const void * in,size_t len)22 void hexdump(FILE *fp, const char *msg, const void *in, size_t len) {
23 const uint8_t *data = reinterpret_cast<const uint8_t*>(in);
24
25 fputs(msg, fp);
26 for (size_t i = 0; i < len; i++) {
27 fprintf(fp, "%02x", data[i]);
28 }
29 fputs("\n", fp);
30 }
31
operator <<(std::ostream & os,const Bytes & in)32 std::ostream &operator<<(std::ostream &os, const Bytes &in) {
33 if (in.span_.empty()) {
34 return os << "<empty Bytes>";
35 }
36
37 // Print a byte slice as hex.
38 os << EncodeHex(in.span_);
39 return os;
40 }
41
FromHexDigit(uint8_t * out,char c)42 static bool FromHexDigit(uint8_t *out, char c) {
43 if ('0' <= c && c <= '9') {
44 *out = c - '0';
45 return true;
46 }
47 if ('a' <= c && c <= 'f') {
48 *out = c - 'a' + 10;
49 return true;
50 }
51 if ('A' <= c && c <= 'F') {
52 *out = c - 'A' + 10;
53 return true;
54 }
55 return false;
56 }
57
DecodeHex(std::vector<uint8_t> * out,const std::string & in)58 bool DecodeHex(std::vector<uint8_t> *out, const std::string &in) {
59 out->clear();
60 if (in.size() % 2 != 0) {
61 return false;
62 }
63 out->reserve(in.size() / 2);
64 for (size_t i = 0; i < in.size(); i += 2) {
65 uint8_t hi, lo;
66 if (!FromHexDigit(&hi, in[i]) ||
67 !FromHexDigit(&lo, in[i + 1])) {
68 return false;
69 }
70 out->push_back((hi << 4) | lo);
71 }
72 return true;
73 }
74
EncodeHex(bssl::Span<const uint8_t> in)75 std::string EncodeHex(bssl::Span<const uint8_t> in) {
76 static const char kHexDigits[] = "0123456789abcdef";
77 std::string ret;
78 ret.reserve(in.size() * 2);
79 for (uint8_t b : in) {
80 ret += kHexDigits[b >> 4];
81 ret += kHexDigits[b & 0xf];
82 }
83 return ret;
84 }
85
86