sergeyu@chromium.org | f32dd31 | 2014-01-15 23:15:54 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2012, Google Inc. |
| 4 | * Copyright 2012, RTFM Inc. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are met: |
| 8 | * |
| 9 | * 1. Redistributions of source code must retain the above copyright notice, |
| 10 | * this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 12 | * this list of conditions and the following disclaimer in the documentation |
| 13 | * and/or other materials provided with the distribution. |
| 14 | * 3. The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 25 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 26 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include "talk/base/sslfingerprint.h" |
| 30 | |
| 31 | #include <ctype.h> |
| 32 | #include <string> |
| 33 | |
| 34 | #include "talk/base/helpers.h" |
| 35 | #include "talk/base/messagedigest.h" |
| 36 | #include "talk/base/stringencode.h" |
| 37 | |
| 38 | namespace talk_base { |
| 39 | |
| 40 | SSLFingerprint* SSLFingerprint::Create( |
| 41 | const std::string& algorithm, const talk_base::SSLIdentity* identity) { |
| 42 | if (!identity) { |
| 43 | return NULL; |
| 44 | } |
| 45 | |
| 46 | return Create(algorithm, &(identity->certificate())); |
| 47 | } |
| 48 | |
| 49 | SSLFingerprint* SSLFingerprint::Create( |
| 50 | const std::string& algorithm, const talk_base::SSLCertificate* cert) { |
| 51 | uint8 digest_val[64]; |
| 52 | size_t digest_len; |
| 53 | bool ret = cert->ComputeDigest( |
| 54 | algorithm, digest_val, sizeof(digest_val), &digest_len); |
| 55 | if (!ret) { |
| 56 | return NULL; |
| 57 | } |
| 58 | |
| 59 | return new SSLFingerprint(algorithm, digest_val, digest_len); |
| 60 | } |
| 61 | |
| 62 | SSLFingerprint* SSLFingerprint::CreateFromRfc4572( |
| 63 | const std::string& algorithm, const std::string& fingerprint) { |
| 64 | if (algorithm.empty() || !talk_base::IsFips180DigestAlgorithm(algorithm)) |
| 65 | return NULL; |
| 66 | |
| 67 | if (fingerprint.empty()) |
| 68 | return NULL; |
| 69 | |
| 70 | size_t value_len; |
| 71 | char value[talk_base::MessageDigest::kMaxSize]; |
| 72 | value_len = talk_base::hex_decode_with_delimiter(value, sizeof(value), |
| 73 | fingerprint.c_str(), |
| 74 | fingerprint.length(), |
| 75 | ':'); |
| 76 | if (!value_len) |
| 77 | return NULL; |
| 78 | |
| 79 | return new SSLFingerprint(algorithm, |
| 80 | reinterpret_cast<uint8*>(value), |
| 81 | value_len); |
| 82 | } |
| 83 | |
| 84 | SSLFingerprint::SSLFingerprint( |
| 85 | const std::string& algorithm, const uint8* digest_in, size_t digest_len) |
| 86 | : algorithm(algorithm) { |
| 87 | digest.SetData(digest_in, digest_len); |
| 88 | } |
| 89 | |
| 90 | SSLFingerprint::SSLFingerprint(const SSLFingerprint& from) |
| 91 | : algorithm(from.algorithm), digest(from.digest) {} |
| 92 | |
| 93 | bool SSLFingerprint::operator==(const SSLFingerprint& other) const { |
| 94 | return algorithm == other.algorithm && |
| 95 | digest == other.digest; |
| 96 | } |
| 97 | |
| 98 | std::string SSLFingerprint::GetRfc4572Fingerprint() const { |
| 99 | std::string fingerprint = |
| 100 | talk_base::hex_encode_with_delimiter( |
| 101 | digest.data(), digest.length(), ':'); |
| 102 | std::transform(fingerprint.begin(), fingerprint.end(), |
| 103 | fingerprint.begin(), ::toupper); |
| 104 | return fingerprint; |
| 105 | } |
| 106 | |
| 107 | std::string SSLFingerprint::ToString() { |
| 108 | std::string fp_str = algorithm; |
| 109 | fp_str.append(" "); |
| 110 | fp_str.append(GetRfc4572Fingerprint()); |
| 111 | return fp_str; |
| 112 | } |
| 113 | |
| 114 | } // namespace talk_base |