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0c322ecc3f
This adds zlib to Crashpad. By default in standalone Crashpad builds, the system zlib will be used where available. A copy of Chromium’s zlib (currently a slightly patched 1.2.11) is checked out via DEPS into third_party for use on Windows, which does not have a system zlib. zlib is used to produce gzip streams for HTTP upload request bodies sent by crashpad_handler by default. The Content-Encoding: gzip header is set for these compressed request bodies. Compression can be disabled for upload to servers without corresponding decompression support by starting crashpad_handler with the --no-upload-gzip option. Most minidumps compress quite well with zlib. A size reduction of 90% is not uncommon. BUG=crashpad:157 TEST=crashpad_util_test GzipHTTPBodyStream.*:HTTPTransport.* Change-Id: I99b86db3952c3685cd78f5dc858a60b54399c513 Reviewed-on: https://chromium-review.googlesource.com/438585 Reviewed-by: Robert Sesek <rsesek@chromium.org>
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
// Copyright 2017 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/misc/zlib.h"
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#include "base/logging.h"
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#include "base/strings/stringprintf.h"
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#include "third_party/zlib/zlib_crashpad.h"
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namespace crashpad {
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int ZlibWindowBitsWithGzipWrapper(int window_bits) {
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// See the documentation for deflateInit2() and inflateInit2() in <zlib.h>. 0
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// is only valid during decompression.
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DCHECK(window_bits == 0 || (window_bits >= 8 && window_bits <= 15))
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<< window_bits;
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return 16 + window_bits;
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}
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std::string ZlibErrorString(int zr) {
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return base::StringPrintf("%s (%d)", zError(zr), zr);
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}
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} // namespace crashpad
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