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* Added breakpad support for Linux.

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This commit is contained in:
Christian Muehlhaeuser
2011-09-15 07:27:31 +02:00
parent d8b07cee9c
commit d8d7347394
1163 changed files with 465521 additions and 4 deletions
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555
thirdparty/breakpad/client/mac/crash_generation/Inspector.mm vendored Normal file
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// Copyright (c) 2007, 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.
//
// Utility that can inspect another process and write a crash dump
#include <cstdio>
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <string>
#include <sys/time.h>
#import "client/mac/crash_generation/Inspector.h"
#import "client/mac/Framework/Breakpad.h"
#import "client/mac/handler/minidump_generator.h"
#import "common/mac/SimpleStringDictionary.h"
#import "common/mac/MachIPC.h"
#import "GTMDefines.h"
#import <Foundation/Foundation.h>
#if VERBOSE
bool gDebugLog = true;
#else
bool gDebugLog = false;
#endif
namespace google_breakpad {
//=============================================================================
BOOL EnsureDirectoryPathExists(NSString *dirPath) {
NSFileManager *mgr = [NSFileManager defaultManager];
// If we got a relative path, prepend the current directory
if (![dirPath isAbsolutePath])
dirPath = [[mgr currentDirectoryPath] stringByAppendingPathComponent:dirPath];
NSString *path = dirPath;
// Ensure that no file exists within the path which would block creation
while (1) {
BOOL isDir;
if ([mgr fileExistsAtPath:path isDirectory:&isDir]) {
if (isDir)
break;
return NO;
}
path = [path stringByDeletingLastPathComponent];
}
// Path now contains the first valid directory (or is empty)
if (![path length])
return NO;
NSString *common =
[dirPath commonPrefixWithString:path options:NSLiteralSearch];
// If everything is good
if ([common isEqualToString:dirPath])
return YES;
// Break up the difference into components
NSString *diff = [dirPath substringFromIndex:[common length] + 1];
NSArray *components = [diff pathComponents];
NSUInteger count = [components count];
// Rebuild the path one component at a time
NSDictionary *attrs =
[NSDictionary dictionaryWithObject:[NSNumber numberWithUnsignedLong:0750]
forKey:NSFilePosixPermissions];
path = common;
for (NSUInteger i = 0; i < count; ++i) {
path = [path stringByAppendingPathComponent:[components objectAtIndex:i]];
if (![mgr createDirectoryAtPath:path attributes:attrs])
return NO;
}
return YES;
}
//=============================================================================
BOOL ConfigFile::WriteData(const void *data, size_t length) {
size_t result = write(config_file_, data, length);
return result == length;
}
//=============================================================================
BOOL ConfigFile::AppendConfigData(const char *key,
const void *data, size_t length) {
assert(config_file_ != -1);
if (!key) {
DEBUGLOG(stderr, "Breakpad: Missing Key\n");
return NO;
}
if (!data) {
DEBUGLOG(stderr, "Breakpad: Missing data for key: %s\n", key ? key :
"<Unknown Key>");
return NO;
}
// Write the key, \n, length of data (ascii integer), \n, data
char buffer[16];
char nl = '\n';
BOOL result = WriteData(key, strlen(key));
snprintf(buffer, sizeof(buffer) - 1, "\n%lu\n", length);
result &= WriteData(buffer, strlen(buffer));
result &= WriteData(data, length);
result &= WriteData(&nl, 1);
return result;
}
//=============================================================================
BOOL ConfigFile::AppendConfigString(const char *key,
const char *value) {
return AppendConfigData(key, value, strlen(value));
}
//=============================================================================
void ConfigFile::WriteFile(const SimpleStringDictionary *configurationParameters,
const char *dump_dir,
const char *minidump_id) {
assert(config_file_ == -1);
// Open and write out configuration file preamble
strlcpy(config_file_path_, "/tmp/Config-XXXXXX",
sizeof(config_file_path_));
config_file_ = mkstemp(config_file_path_);
if (config_file_ == -1) {
DEBUGLOG(stderr,
"mkstemp(config_file_path_) == -1 (%s)\n",
strerror(errno));
return;
}
else {
DEBUGLOG(stderr, "Writing config file to (%s)\n", config_file_path_);
}
has_created_file_ = true;
// Add the minidump dir
AppendConfigString(kReporterMinidumpDirectoryKey, dump_dir);
AppendConfigString(kReporterMinidumpIDKey, minidump_id);
// Write out the configuration parameters
BOOL result = YES;
const SimpleStringDictionary &dictionary = *configurationParameters;
const KeyValueEntry *entry = NULL;
SimpleStringDictionaryIterator iter(dictionary);
while ((entry = iter.Next())) {
DEBUGLOG(stderr,
"config: (%s) -> (%s)\n",
entry->GetKey(),
entry->GetValue());
result = AppendConfigString(entry->GetKey(), entry->GetValue());
if (!result)
break;
}
close(config_file_);
config_file_ = -1;
}
//=============================================================================
void Inspector::Inspect(const char *receive_port_name) {
kern_return_t result = ServiceCheckIn(receive_port_name);
if (result == KERN_SUCCESS) {
result = ReadMessages();
if (result == KERN_SUCCESS) {
// Inspect the task and write a minidump file.
bool wrote_minidump = InspectTask();
// Send acknowledgement to the crashed process that the inspection
// has finished. It will then be able to cleanly exit.
// The return value is ignored because failure isn't fatal. If the process
// didn't get the message there's nothing we can do, and we still want to
// send the report.
SendAcknowledgement();
if (wrote_minidump) {
// Ask the user if he wants to upload the crash report to a server,
// and do so if he agrees.
LaunchReporter(config_file_.GetFilePath());
} else {
fprintf(stderr, "Inspection of crashed process failed\n");
}
// Now that we're done reading messages, cleanup the service, but only
// if there was an actual exception
// Otherwise, it means the dump was generated on demand and the process
// lives on, and we might be needed again in the future.
if (exception_code_) {
ServiceCheckOut(receive_port_name);
}
} else {
PRINT_MACH_RESULT(result, "Inspector: WaitForMessage()");
}
}
}
//=============================================================================
kern_return_t Inspector::ServiceCheckIn(const char *receive_port_name) {
// We need to get the mach port representing this service, so we can
// get information from the crashed process.
kern_return_t kr = bootstrap_check_in(bootstrap_port,
(char*)receive_port_name,
&service_rcv_port_);
if (kr != KERN_SUCCESS) {
#if VERBOSE
PRINT_MACH_RESULT(kr, "Inspector: bootstrap_check_in()");
#endif
}
return kr;
}
//=============================================================================
kern_return_t Inspector::ServiceCheckOut(const char *receive_port_name) {
// We're done receiving mach messages from the crashed process,
// so clean up a bit.
kern_return_t kr;
// DO NOT use mach_port_deallocate() here -- it will fail and the
// following bootstrap_register() will also fail leaving our service
// name hanging around forever (until reboot)
kr = mach_port_destroy(mach_task_self(), service_rcv_port_);
if (kr != KERN_SUCCESS) {
PRINT_MACH_RESULT(kr,
"Inspector: UNREGISTERING: service_rcv_port mach_port_deallocate()");
return kr;
}
// Unregister the service associated with the receive port.
kr = bootstrap_register(bootstrap_port,
(char*)receive_port_name,
MACH_PORT_NULL);
if (kr != KERN_SUCCESS) {
PRINT_MACH_RESULT(kr, "Inspector: UNREGISTERING: bootstrap_register()");
}
return kr;
}
//=============================================================================
kern_return_t Inspector::ReadMessages() {
// Wait for an initial message from the crashed process containing basic
// information about the crash.
ReceivePort receive_port(service_rcv_port_);
MachReceiveMessage message;
kern_return_t result = receive_port.WaitForMessage(&message, 1000);
if (result == KERN_SUCCESS) {
InspectorInfo &info = (InspectorInfo &)*message.GetData();
exception_type_ = info.exception_type;
exception_code_ = info.exception_code;
exception_subcode_ = info.exception_subcode;
#if VERBOSE
printf("message ID = %d\n", message.GetMessageID());
#endif
remote_task_ = message.GetTranslatedPort(0);
crashing_thread_ = message.GetTranslatedPort(1);
handler_thread_ = message.GetTranslatedPort(2);
ack_port_ = message.GetTranslatedPort(3);
#if VERBOSE
printf("exception_type = %d\n", exception_type_);
printf("exception_code = %d\n", exception_code_);
printf("exception_subcode = %d\n", exception_subcode_);
printf("remote_task = %d\n", remote_task_);
printf("crashing_thread = %d\n", crashing_thread_);
printf("handler_thread = %d\n", handler_thread_);
printf("ack_port_ = %d\n", ack_port_);
printf("parameter count = %d\n", info.parameter_count);
#endif
// In certain situations where multiple crash requests come
// through quickly, we can end up with the mach IPC messages not
// coming through correctly. Since we don't know what parameters
// we've missed, we can't do much besides abort the crash dump
// situation in this case.
unsigned int parameters_read = 0;
// The initial message contains the number of key value pairs that
// we are expected to read.
// Read each key/value pair, one mach message per key/value pair.
for (unsigned int i = 0; i < info.parameter_count; ++i) {
MachReceiveMessage parameter_message;
result = receive_port.WaitForMessage(&parameter_message, 1000);
if(result == KERN_SUCCESS) {
KeyValueMessageData &key_value_data =
(KeyValueMessageData&)*parameter_message.GetData();
// If we get a blank key, make sure we don't increment the
// parameter count; in some cases (notably on-demand generation
// many times in a short period of time) caused the Mach IPC
// messages to not come through correctly.
if (strlen(key_value_data.key) == 0) {
continue;
}
parameters_read++;
config_params_.SetKeyValue(key_value_data.key, key_value_data.value);
} else {
PRINT_MACH_RESULT(result, "Inspector: key/value message");
break;
}
}
if (parameters_read != info.parameter_count) {
DEBUGLOG(stderr, "Only read %d parameters instead of %d, aborting crash "
"dump generation.", parameters_read, info.parameter_count);
return KERN_FAILURE;
}
}
return result;
}
//=============================================================================
// Sets keys in the parameters dictionary that are specific to process uptime.
// The two we set are process up time, and process crash time.
void Inspector::SetCrashTimeParameters() {
// Set process uptime parameter
struct timeval tv;
gettimeofday(&tv, NULL);
char processUptimeString[32], processCrashtimeString[32];
const char *processStartTimeString =
config_params_.GetValueForKey(BREAKPAD_PROCESS_START_TIME);
// Set up time if we've received the start time.
if (processStartTimeString) {
time_t processStartTime = strtol(processStartTimeString, NULL, 10);
time_t processUptime = tv.tv_sec - processStartTime;
sprintf(processUptimeString, "%zd", processUptime);
config_params_.SetKeyValue(BREAKPAD_PROCESS_UP_TIME, processUptimeString);
}
sprintf(processCrashtimeString, "%zd", tv.tv_sec);
config_params_.SetKeyValue(BREAKPAD_PROCESS_CRASH_TIME,
processCrashtimeString);
}
bool Inspector::InspectTask() {
// keep the task quiet while we're looking at it
task_suspend(remote_task_);
DEBUGLOG(stderr, "Suspended Remote task\n");
NSString *minidumpDir;
const char *minidumpDirectory =
config_params_.GetValueForKey(BREAKPAD_DUMP_DIRECTORY);
SetCrashTimeParameters();
// If the client app has not specified a minidump directory,
// use a default of Library/<kDefaultLibrarySubdirectory>/<Product Name>
if (!minidumpDirectory || 0 == strlen(minidumpDirectory)) {
NSArray *libraryDirectories =
NSSearchPathForDirectoriesInDomains(NSLibraryDirectory,
NSUserDomainMask,
YES);
NSString *applicationSupportDirectory =
[libraryDirectories objectAtIndex:0];
NSString *library_subdirectory = [NSString
stringWithUTF8String:kDefaultLibrarySubdirectory];
NSString *breakpad_product = [NSString
stringWithUTF8String:config_params_.GetValueForKey(BREAKPAD_PRODUCT)];
NSArray *path_components = [NSArray
arrayWithObjects:applicationSupportDirectory,
library_subdirectory,
breakpad_product,
nil];
minidumpDir = [NSString pathWithComponents:path_components];
} else {
minidumpDir = [[NSString stringWithUTF8String:minidumpDirectory]
stringByExpandingTildeInPath];
}
DEBUGLOG(stderr,
"Writing minidump to directory (%s)\n",
[minidumpDir UTF8String]);
MinidumpLocation minidumpLocation(minidumpDir);
// Obscure bug alert:
// Don't use [NSString stringWithFormat] to build up the path here since it
// assumes system encoding and in RTL locales will prepend an LTR override
// character for paths beginning with '/' which fileSystemRepresentation does
// not remove. Filed as rdar://6889706 .
NSString *path_ns = [NSString
stringWithUTF8String:minidumpLocation.GetPath()];
NSString *pathid_ns = [NSString
stringWithUTF8String:minidumpLocation.GetID()];
NSString *minidumpPath = [path_ns stringByAppendingPathComponent:pathid_ns];
minidumpPath = [minidumpPath
stringByAppendingPathExtension:@"dmp"];
DEBUGLOG(stderr,
"minidump path (%s)\n",
[minidumpPath UTF8String]);
config_file_.WriteFile( &config_params_,
minidumpLocation.GetPath(),
minidumpLocation.GetID());
MinidumpGenerator generator(remote_task_, handler_thread_);
if (exception_type_ && exception_code_) {
generator.SetExceptionInformation(exception_type_,
exception_code_,
exception_subcode_,
crashing_thread_);
}
bool result = generator.Write([minidumpPath fileSystemRepresentation]);
if (result) {
DEBUGLOG(stderr, "Wrote minidump - OK\n");
} else {
DEBUGLOG(stderr, "Error writing minidump - errno=%s\n", strerror(errno));
}
// let the task continue
task_resume(remote_task_);
DEBUGLOG(stderr, "Resumed remote task\n");
return result;
}
//=============================================================================
// The crashed task needs to be told that the inspection has finished.
// It will wait on a mach port (with timeout) until we send acknowledgement.
kern_return_t Inspector::SendAcknowledgement() {
if (ack_port_ != MACH_PORT_DEAD) {
MachPortSender sender(ack_port_);
MachSendMessage ack_message(kMsgType_InspectorAcknowledgement);
DEBUGLOG(stderr, "Inspector: trying to send acknowledgement to port %d\n",
ack_port_);
kern_return_t result = sender.SendMessage(ack_message, 2000);
#if VERBOSE
PRINT_MACH_RESULT(result, "Inspector: sent acknowledgement");
#endif
return result;
}
DEBUGLOG(stderr, "Inspector: port translation failure!\n");
return KERN_INVALID_NAME;
}
//=============================================================================
void Inspector::LaunchReporter(const char *inConfigFilePath) {
// Extract the path to the reporter executable.
const char *reporterExecutablePath =
config_params_.GetValueForKey(BREAKPAD_REPORTER_EXE_LOCATION);
DEBUGLOG(stderr, "reporter path = %s\n", reporterExecutablePath);
// Setup and launch the crash dump sender.
const char *argv[3];
argv[0] = reporterExecutablePath;
argv[1] = inConfigFilePath;
argv[2] = NULL;
// Launch the reporter
pid_t pid = fork();
// If we're in the child, load in our new executable and run.
// The parent will not wait for the child to complete.
if (pid == 0) {
execv(argv[0], (char * const *)argv);
config_file_.Unlink(); // launch failed - get rid of config file
DEBUGLOG(stderr, "Inspector: unable to launch reporter app\n");
_exit(1);
}
// Wait until the Reporter child process exits.
//
// We'll use a timeout of one minute.
int timeoutCount = 60; // 60 seconds
while (timeoutCount-- > 0) {
int status;
pid_t result = waitpid(pid, &status, WNOHANG);
if (result == 0) {
// The child has not yet finished.
sleep(1);
} else if (result == -1) {
DEBUGLOG(stderr, "Inspector: waitpid error (%d) waiting for reporter app\n",
errno);
break;
} else {
// child has finished
break;
}
}
}
} // namespace google_breakpad