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authorRemko Tronçon <git@el-tramo.be>2012-08-17 21:07:13 (GMT)
committerRemko Tronçon <git@el-tramo.be>2012-08-17 21:07:13 (GMT)
commit4397df6b409ca84f63838fa635fc2abe8af80b71 (patch)
tree0806d51a1aaa6a1f9ac00df318be72fbee19ec1d /3rdParty/Breakpad/src/common/mac/macho_id.cc
parentead6c91f24d77de3319e77ae1354387407065ef1 (diff)
downloadswift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.zip
swift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.tar.bz2
Added Breakpad support for Windows.
Diffstat (limited to '3rdParty/Breakpad/src/common/mac/macho_id.cc')
-rw-r--r--3rdParty/Breakpad/src/common/mac/macho_id.cc366
1 files changed, 366 insertions, 0 deletions
diff --git a/3rdParty/Breakpad/src/common/mac/macho_id.cc b/3rdParty/Breakpad/src/common/mac/macho_id.cc
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+++ b/3rdParty/Breakpad/src/common/mac/macho_id.cc
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+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// macho_id.cc: Functions to gather identifying information from a macho file
+//
+// See macho_id.h for documentation
+//
+// Author: Dan Waylonis
+
+extern "C" { // necessary for Leopard
+ #include <fcntl.h>
+ #include <mach-o/loader.h>
+ #include <mach-o/swap.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <sys/time.h>
+ #include <sys/types.h>
+ #include <unistd.h>
+}
+
+#include "common/mac/macho_id.h"
+#include "common/mac/macho_walker.h"
+#include "common/mac/macho_utilities.h"
+
+namespace MacFileUtilities {
+
+using google_breakpad::MD5Init;
+using google_breakpad::MD5Update;
+using google_breakpad::MD5Final;
+
+MachoID::MachoID(const char *path)
+ : memory_(0),
+ memory_size_(0),
+ crc_(0),
+ md5_context_(),
+ update_function_(NULL) {
+ strlcpy(path_, path, sizeof(path_));
+}
+
+MachoID::MachoID(const char *path, void *memory, size_t size)
+ : memory_(memory),
+ memory_size_(size),
+ crc_(0),
+ md5_context_(),
+ update_function_(NULL) {
+ strlcpy(path_, path, sizeof(path_));
+}
+
+MachoID::~MachoID() {
+}
+
+// The CRC info is from http://en.wikipedia.org/wiki/Adler-32
+// With optimizations from http://www.zlib.net/
+
+// The largest prime smaller than 65536
+#define MOD_ADLER 65521
+// MAX_BLOCK is the largest n such that 255n(n+1)/2 + (n+1)(MAX_BLOCK-1) <= 2^32-1
+#define MAX_BLOCK 5552
+
+void MachoID::UpdateCRC(unsigned char *bytes, size_t size) {
+// Unrolled loops for summing
+#define DO1(buf,i) {sum1 += (buf)[i]; sum2 += sum1;}
+#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf) DO8(buf,0); DO8(buf,8);
+ // Split up the crc
+ uint32_t sum1 = crc_ & 0xFFFF;
+ uint32_t sum2 = (crc_ >> 16) & 0xFFFF;
+
+ // Do large blocks
+ while (size >= MAX_BLOCK) {
+ size -= MAX_BLOCK;
+ int block_count = MAX_BLOCK / 16;
+ do {
+ DO16(bytes);
+ bytes += 16;
+ } while (--block_count);
+ sum1 %= MOD_ADLER;
+ sum2 %= MOD_ADLER;
+ }
+
+ // Do remaining bytes
+ if (size) {
+ while (size >= 16) {
+ size -= 16;
+ DO16(bytes);
+ bytes += 16;
+ }
+ while (size--) {
+ sum1 += *bytes++;
+ sum2 += sum1;
+ }
+ sum1 %= MOD_ADLER;
+ sum2 %= MOD_ADLER;
+ crc_ = (sum2 << 16) | sum1;
+ }
+}
+
+void MachoID::UpdateMD5(unsigned char *bytes, size_t size) {
+ MD5Update(&md5_context_, bytes, size);
+}
+
+void MachoID::Update(MachoWalker *walker, off_t offset, size_t size) {
+ if (!update_function_ || !size)
+ return;
+
+ // Read up to 4k bytes at a time
+ unsigned char buffer[4096];
+ size_t buffer_size;
+ off_t file_offset = offset;
+ while (size > 0) {
+ if (size > sizeof(buffer)) {
+ buffer_size = sizeof(buffer);
+ size -= buffer_size;
+ } else {
+ buffer_size = size;
+ size = 0;
+ }
+
+ if (!walker->ReadBytes(buffer, buffer_size, file_offset))
+ return;
+
+ (this->*update_function_)(buffer, buffer_size);
+ file_offset += buffer_size;
+ }
+}
+
+bool MachoID::UUIDCommand(int cpu_type, unsigned char bytes[16]) {
+ struct breakpad_uuid_command uuid_cmd;
+ uuid_cmd.cmd = 0;
+ if (!WalkHeader(cpu_type, UUIDWalkerCB, &uuid_cmd))
+ return false;
+
+ // If we found the command, we'll have initialized the uuid_command
+ // structure
+ if (uuid_cmd.cmd == LC_UUID) {
+ memcpy(bytes, uuid_cmd.uuid, sizeof(uuid_cmd.uuid));
+ return true;
+ }
+
+ return false;
+}
+
+bool MachoID::IDCommand(int cpu_type, unsigned char identifier[16]) {
+ struct dylib_command dylib_cmd;
+ dylib_cmd.cmd = 0;
+ if (!WalkHeader(cpu_type, IDWalkerCB, &dylib_cmd))
+ return false;
+
+ // If we found the command, we'll have initialized the dylib_command
+ // structure
+ if (dylib_cmd.cmd == LC_ID_DYLIB) {
+ // Take the hashed filename, version, and compatability version bytes
+ // to form the first 12 bytes, pad the rest with zeros
+
+ // create a crude hash of the filename to generate the first 4 bytes
+ identifier[0] = 0;
+ identifier[1] = 0;
+ identifier[2] = 0;
+ identifier[3] = 0;
+
+ for (int j = 0, i = (int)strlen(path_)-1; i>=0 && path_[i]!='/'; ++j, --i) {
+ identifier[j%4] += path_[i];
+ }
+
+ identifier[4] = (dylib_cmd.dylib.current_version >> 24) & 0xFF;
+ identifier[5] = (dylib_cmd.dylib.current_version >> 16) & 0xFF;
+ identifier[6] = (dylib_cmd.dylib.current_version >> 8) & 0xFF;
+ identifier[7] = dylib_cmd.dylib.current_version & 0xFF;
+ identifier[8] = (dylib_cmd.dylib.compatibility_version >> 24) & 0xFF;
+ identifier[9] = (dylib_cmd.dylib.compatibility_version >> 16) & 0xFF;
+ identifier[10] = (dylib_cmd.dylib.compatibility_version >> 8) & 0xFF;
+ identifier[11] = dylib_cmd.dylib.compatibility_version & 0xFF;
+ identifier[12] = (cpu_type >> 24) & 0xFF;
+ identifier[13] = (cpu_type >> 16) & 0xFF;
+ identifier[14] = (cpu_type >> 8) & 0xFF;
+ identifier[15] = cpu_type & 0xFF;
+
+ return true;
+ }
+
+ return false;
+}
+
+uint32_t MachoID::Adler32(int cpu_type) {
+ update_function_ = &MachoID::UpdateCRC;
+ crc_ = 0;
+
+ if (!WalkHeader(cpu_type, WalkerCB, this))
+ return 0;
+
+ return crc_;
+}
+
+bool MachoID::MD5(int cpu_type, unsigned char identifier[16]) {
+ update_function_ = &MachoID::UpdateMD5;
+
+ MD5Init(&md5_context_);
+
+ if (!WalkHeader(cpu_type, WalkerCB, this))
+ return false;
+
+ MD5Final(identifier, &md5_context_);
+ return true;
+}
+
+bool MachoID::WalkHeader(int cpu_type,
+ MachoWalker::LoadCommandCallback callback,
+ void *context) {
+ if (memory_) {
+ MachoWalker walker(memory_, memory_size_, callback, context);
+ return walker.WalkHeader(cpu_type);
+ } else {
+ MachoWalker walker(path_, callback, context);
+ return walker.WalkHeader(cpu_type);
+ }
+}
+
+// static
+bool MachoID::WalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
+ bool swap, void *context) {
+ MachoID *macho_id = (MachoID *)context;
+
+ if (cmd->cmd == LC_SEGMENT) {
+ struct segment_command seg;
+
+ if (!walker->ReadBytes(&seg, sizeof(seg), offset))
+ return false;
+
+ if (swap)
+ swap_segment_command(&seg, NXHostByteOrder());
+
+ struct mach_header_64 header;
+ off_t header_offset;
+
+ if (!walker->CurrentHeader(&header, &header_offset))
+ return false;
+
+ // Process segments that have sections:
+ // (e.g., __TEXT, __DATA, __IMPORT, __OBJC)
+ offset += sizeof(struct segment_command);
+ struct section sec;
+ for (unsigned long i = 0; i < seg.nsects; ++i) {
+ if (!walker->ReadBytes(&sec, sizeof(sec), offset))
+ return false;
+
+ if (swap)
+ swap_section(&sec, 1, NXHostByteOrder());
+
+ // sections of type S_ZEROFILL are "virtual" and contain no data
+ // in the file itself
+ if ((sec.flags & SECTION_TYPE) != S_ZEROFILL && sec.offset != 0)
+ macho_id->Update(walker, header_offset + sec.offset, sec.size);
+
+ offset += sizeof(struct section);
+ }
+ } else if (cmd->cmd == LC_SEGMENT_64) {
+ struct segment_command_64 seg64;
+
+ if (!walker->ReadBytes(&seg64, sizeof(seg64), offset))
+ return false;
+
+ if (swap)
+ breakpad_swap_segment_command_64(&seg64, NXHostByteOrder());
+
+ struct mach_header_64 header;
+ off_t header_offset;
+
+ if (!walker->CurrentHeader(&header, &header_offset))
+ return false;
+
+ // Process segments that have sections:
+ // (e.g., __TEXT, __DATA, __IMPORT, __OBJC)
+ offset += sizeof(struct segment_command_64);
+ struct section_64 sec64;
+ for (unsigned long i = 0; i < seg64.nsects; ++i) {
+ if (!walker->ReadBytes(&sec64, sizeof(sec64), offset))
+ return false;
+
+ if (swap)
+ breakpad_swap_section_64(&sec64, 1, NXHostByteOrder());
+
+ // sections of type S_ZEROFILL are "virtual" and contain no data
+ // in the file itself
+ if ((sec64.flags & SECTION_TYPE) != S_ZEROFILL && sec64.offset != 0)
+ macho_id->Update(walker,
+ header_offset + sec64.offset,
+ (size_t)sec64.size);
+
+ offset += sizeof(struct section_64);
+ }
+ }
+
+ // Continue processing
+ return true;
+}
+
+// static
+bool MachoID::UUIDWalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
+ bool swap, void *context) {
+ if (cmd->cmd == LC_UUID) {
+ struct breakpad_uuid_command *uuid_cmd =
+ (struct breakpad_uuid_command *)context;
+
+ if (!walker->ReadBytes(uuid_cmd, sizeof(struct breakpad_uuid_command),
+ offset))
+ return false;
+
+ if (swap)
+ breakpad_swap_uuid_command(uuid_cmd, NXHostByteOrder());
+
+ return false;
+ }
+
+ // Continue processing
+ return true;
+}
+
+// static
+bool MachoID::IDWalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
+ bool swap, void *context) {
+ if (cmd->cmd == LC_ID_DYLIB) {
+ struct dylib_command *dylib_cmd = (struct dylib_command *)context;
+
+ if (!walker->ReadBytes(dylib_cmd, sizeof(struct dylib_command), offset))
+ return false;
+
+ if (swap)
+ swap_dylib_command(dylib_cmd, NXHostByteOrder());
+
+ return false;
+ }
+
+ // Continue processing
+ return true;
+}
+
+} // namespace MacFileUtilities