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| author | Tobias Markmann <tm@ayena.de> | 2011-05-26 18:46:49 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2011-09-25 17:42:32 (GMT) |
| commit | 4f62e5ec4b42929fe3c1a68667e63cb1b7a35509 (patch) | |
| tree | 0d19fac3f578dec00ccf3e58930312951e38de89 /Swiften/StringCodecs/Hexify.cpp | |
| parent | de660b763459cdd707876ec244b6866abca07fa2 (diff) | |
| download | swift-4f62e5ec4b42929fe3c1a68667e63cb1b7a35509.zip swift-4f62e5ec4b42929fe3c1a68667e63cb1b7a35509.tar.bz2 | |
Google Summer of Code 2011 Project: Adding support for Jingle File Transfers (XEP-0234), Jingle SOCKS5 Bytestreams Transport Method (XEP-0260), Jingle In-Band Bytestreams Transport Method (XEP-0261) and SOCKS5 Bytestreams (XEP-0065).
License: This patch is BSD-licensed, see http://www.opensource.org/licenses/bsd-license.php
Diffstat (limited to 'Swiften/StringCodecs/Hexify.cpp')
| -rw-r--r-- | Swiften/StringCodecs/Hexify.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Swiften/StringCodecs/Hexify.cpp b/Swiften/StringCodecs/Hexify.cpp index 367743c..668079b 100644 --- a/Swiften/StringCodecs/Hexify.cpp +++ b/Swiften/StringCodecs/Hexify.cpp @@ -31,4 +31,22 @@ std::string Hexify::hexify(const ByteArray& data) { return std::string(result.str()); } +ByteArray Hexify::unhexify(const std::string& hexstring) { + if (hexstring.size() % 2) { + return ByteArray(); + } + ByteArray result = ByteArray(hexstring.size() / 2); + for (size_t pos = 0; pos < hexstring.size() - 1; pos += 2) { + char c; + c = hexstring[pos]; + int a = (c>='0'&&c<='9') ? c-'0' : (c>='A'&&c<='Z') ? c-'A' + 10 : (c>='a'&&c<='z') ? c-'a' + 10 : -1; + c = hexstring[pos+1]; + int b = (c>='0'&&c<='9') ? c-'0' : (c>='A'&&c<='Z') ? c-'A' + 10 : (c>='a'&&c<='z') ? c-'a' + 10 : -1; + if (a == -1 || b == -1) return ByteArray(); // fail + result[pos/2] = (a<<4) | b; + + } + return result; +} + } |