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-rw-r--r--src/common/mac/macho_id.cc175
1 files changed, 21 insertions, 154 deletions
diff --git a/src/common/mac/macho_id.cc b/src/common/mac/macho_id.cc
index c396ad88..e67ccddb 100644
--- a/src/common/mac/macho_id.cc
+++ b/src/common/mac/macho_id.cc
@@ -1,5 +1,4 @@
-// Copyright (c) 2006, Google Inc.
-// All rights reserved.
+// Copyright 2006 Google LLC
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
@@ -11,7 +10,7 @@
// 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
+// * Neither the name of Google LLC nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
@@ -37,11 +36,7 @@
#include <fcntl.h>
#include <mach-o/loader.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"
@@ -53,80 +48,25 @@ 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) {
+MachoID::MachoID(const char* path)
+ : memory_(0), memory_size_(0), md5_context_(), update_function_(NULL) {
snprintf(path_, sizeof(path_), "%s", path);
}
-MachoID::MachoID(const char *path, void *memory, size_t size)
- : memory_(memory),
- memory_size_(size),
- crc_(0),
- md5_context_(),
- update_function_(NULL) {
- snprintf(path_, sizeof(path_), "%s", path);
-}
-
-MachoID::~MachoID() {
-}
+MachoID::MachoID(void* memory, size_t size)
+ : path_(),
+ memory_(memory),
+ memory_size_(size),
+ md5_context_(),
+ update_function_(NULL) {}
-// 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;
- }
+MachoID::~MachoID() {}
- // 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) {
+void MachoID::UpdateMD5(unsigned char* bytes, size_t size) {
MD5Update(&md5_context_, bytes, static_cast<unsigned>(size));
}
-void MachoID::Update(MachoWalker *walker, off_t offset, size_t size) {
+void MachoID::Update(MachoWalker* walker, off_t offset, size_t size) {
if (!update_function_ || !size)
return;
@@ -169,59 +109,6 @@ bool MachoID::UUIDCommand(cpu_type_t cpu_type,
return false;
}
-bool MachoID::IDCommand(cpu_type_t cpu_type,
- cpu_subtype_t cpu_subtype,
- unsigned char identifier[16]) {
- struct dylib_command dylib_cmd;
- dylib_cmd.cmd = 0;
- if (!WalkHeader(cpu_type, cpu_subtype, 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(cpu_type_t cpu_type, cpu_subtype_t cpu_subtype) {
- update_function_ = &MachoID::UpdateCRC;
- crc_ = 0;
-
- if (!WalkHeader(cpu_type, cpu_subtype, WalkerCB, this))
- return 0;
-
- return crc_;
-}
-
bool MachoID::MD5(cpu_type_t cpu_type, cpu_subtype_t cpu_subtype, unsigned char identifier[16]) {
update_function_ = &MachoID::UpdateMD5;
@@ -237,7 +124,7 @@ bool MachoID::MD5(cpu_type_t cpu_type, cpu_subtype_t cpu_subtype, unsigned char
bool MachoID::WalkHeader(cpu_type_t cpu_type,
cpu_subtype_t cpu_subtype,
MachoWalker::LoadCommandCallback callback,
- void *context) {
+ void* context) {
if (memory_) {
MachoWalker walker(memory_, memory_size_, callback, context);
return walker.WalkHeader(cpu_type, cpu_subtype);
@@ -248,9 +135,9 @@ bool MachoID::WalkHeader(cpu_type_t cpu_type,
}
// static
-bool MachoID::WalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
- bool swap, void *context) {
- MachoID *macho_id = (MachoID *)context;
+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;
@@ -327,11 +214,11 @@ bool MachoID::WalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
}
// static
-bool MachoID::UUIDWalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
- bool swap, void *context) {
+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;
+ struct breakpad_uuid_command* uuid_cmd =
+ (struct breakpad_uuid_command*)context;
if (!walker->ReadBytes(uuid_cmd, sizeof(struct breakpad_uuid_command),
offset))
@@ -346,24 +233,4 @@ bool MachoID::UUIDWalkerCB(MachoWalker *walker, load_command *cmd, off_t offset,
// 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)
- breakpad_swap_dylib_command(dylib_cmd);
-
- return false;
- }
-
- // Continue processing
- return true;
-}
-
} // namespace MacFileUtilities
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-27 18:39:03 +0000