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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /comphelper/source/xml/xmltools.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | comphelper/source/xml/xmltools.cxx | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/comphelper/source/xml/xmltools.cxx b/comphelper/source/xml/xmltools.cxx new file mode 100644 index 000000000..1b10964b1 --- /dev/null +++ b/comphelper/source/xml/xmltools.cxx @@ -0,0 +1,99 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#include <comphelper/xmltools.hxx> +#include <rtl/random.h> +#include <tools/Guid.hxx> +#include <vector> + +using namespace com::sun::star; + +namespace +{ + //Will be inside an xml comment, so can't use '-' in case '--' appears in + //output, etc. Despite what *is* legal in an xml comment, just using the + //base-64 subset to avoid pain with simplistic third-party parsers + const sal_uInt8 aChaffEncoder[] = + { + 'A', 'Q', 'g', 'w', 'B', 'R', 'h', 'x', + 'C', 'S', 'i', 'y', 'D', 'T', 'j', 'z', + 'E', 'U', 'k', '0', 'F', 'V', 'l', '1', + 'G', 'W', 'm', '2', 'H', 'X', 'n', '3', + 'I', 'Y', 'o', '4', 'J', 'Z', 'p', '5', + 'K', 'a', 'q', '6', 'L', 'b', 'r', '7', + 'M', 'c', 's', '8', 'N', 'd', 't', '9', + 'O', 'e', 'u', '+', 'P', 'f', 'v', '/', + + 'A', 'Q', 'g', 'w', 'B', 'R', 'h', 'x', + 'C', 'S', 'i', 'y', 'D', 'T', 'j', 'z', + 'E', 'U', 'k', '0', 'F', 'V', 'l', '1', + 'G', 'W', 'm', '2', 'H', 'X', 'n', '3', + 'I', 'Y', 'o', '4', 'J', 'Z', 'p', '5', + 'K', 'a', 'q', '6', 'L', 'b', 'r', '7', + 'M', 'c', 's', '8', 'N', 'd', 't', '9', + 'O', 'e', 'u', '+', 'P', 'f', 'v', '/', + + 'A', 'Q', 'g', 'w', 'B', 'R', 'h', 'x', + 'C', 'S', 'i', 'y', 'D', 'T', 'j', 'z', + 'E', 'U', 'k', '0', 'F', 'V', 'l', '1', + 'G', 'W', 'm', '2', 'H', 'X', 'n', '3', + 'I', 'Y', 'o', '4', 'J', 'Z', 'p', '5', + 'K', 'a', 'q', '6', 'L', 'b', 'r', '7', + 'M', 'c', 's', '8', 'N', 'd', 't', '9', + 'O', 'e', 'u', '+', 'P', 'f', 'v', '/', + + 'A', 'Q', 'g', 'w', 'B', 'R', 'h', 'x', + 'C', 'S', 'i', 'y', 'D', 'T', 'j', 'z', + 'E', 'U', 'k', '0', 'F', 'V', 'l', '1', + 'G', 'W', 'm', '2', 'H', 'X', 'n', '3', + 'I', 'Y', 'o', '4', 'J', 'Z', 'p', '5', + 'K', 'a', 'q', '6', 'L', 'b', 'r', '7', + 'M', 'c', 's', '8', 'N', 'd', 't', '9', + 'O', 'e', 'u', '+', 'P', 'f', 'v', '/' + }; + + void encodeChaff(std::vector<sal_uInt8> &rChaff) + { + static_assert(sizeof(aChaffEncoder) == 256, "this has to cover all chars"); + + for (auto & elem : rChaff) + { + elem = aChaffEncoder[elem]; + } + } +} + +namespace comphelper::xml +{ + OString makeXMLChaff() + { + rtlRandomPool pool = rtl_random_createPool(); + + sal_Int8 n; + rtl_random_getBytes(pool, &n, 1); + + sal_Int32 nLength = 1024+n; + // coverity[tainted_data] - 1024 deliberate random minus max -127/plus max 128 + std::vector<sal_uInt8> aChaff(nLength); + rtl_random_getBytes(pool, aChaff.data(), nLength); + + rtl_random_destroyPool(pool); + + encodeChaff(aChaff); + + return OString(reinterpret_cast<const char*>(aChaff.data()), nLength); + } + + OString generateGUIDString() + { + tools::Guid aGuid(tools::Guid::Generate); + return aGuid.getString(); + } +} +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |