crashpad/snapshot/mac/mach_o_image_annotations_reader.h
Mark Mentovai 6278690abe Update copyright boilerplate, 2022 edition (Crashpad)
sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$')

Bug: chromium:1098010
Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-09-06 23:54:07 +00:00

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// Copyright 2014 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CRASHPAD_SNAPSHOT_MAC_MACH_O_IMAGE_ANNOTATIONS_READER_H_
#define CRASHPAD_SNAPSHOT_MAC_MACH_O_IMAGE_ANNOTATIONS_READER_H_
#include <map>
#include <string>
#include <vector>
#include "snapshot/annotation_snapshot.h"
#include "snapshot/mac/process_types.h"
namespace crashpad {
class MachOImageReader;
class ProcessReaderMac;
//! \brief A reader for annotations stored in a Mach-O image mapped into another
//! process.
//!
//! These annotations are stored for the benefit of crash reporters, and provide
//! information thought to be potentially useful for crash analysis. This class
//! can decode annotations stored in these formats:
//! - CrashpadInfo. This format is used by Crashpad clients. The “simple
//! annotations” are recovered from any module with a compatible data
//! section, and are included in the annotations returned by SimpleMap().
//! - `CrashReporterClient.h`s `crashreporter_annotations_t`. This format is
//! used by Apple code. The `message` and `message2` fields can be recovered
//! from any module with a compatible data section, and are included in the
//! annotations returned by Vector().
//! - `dyld`s `error_string`. This format is used exclusively by dyld,
//! typically for fatal errors. This string can be recovered from any
//! `MH_DYLINKER`-type module with this symbol, and is included in the
//! annotations returned by Vector().
class MachOImageAnnotationsReader {
public:
//! \brief Constructs an object.
//!
//! \param[in] process_reader The reader for the remote process.
//! \param[in] image_reader The MachOImageReader for the Mach-O image file
//! contained within the remote process.
//! \param[in] name The modules name, a string to be used in logged messages.
//! This string is for diagnostic purposes only, and may be empty.
MachOImageAnnotationsReader(ProcessReaderMac* process_reader,
const MachOImageReader* image_reader,
const std::string& name);
MachOImageAnnotationsReader(const MachOImageAnnotationsReader&) = delete;
MachOImageAnnotationsReader& operator=(const MachOImageAnnotationsReader&) =
delete;
~MachOImageAnnotationsReader() {}
//! \brief Returns the modules annotations that are organized as a vector of
//! strings.
std::vector<std::string> Vector() const;
//! \brief Returns the modules annotations that are organized as key-value
//! pairs, where all keys and values are strings.
std::map<std::string, std::string> SimpleMap() const;
//! \brief Returns the modules annotations that are organized as a list of
// typed annotation objects.
std::vector<AnnotationSnapshot> AnnotationsList() const;
private:
// Reades crashreporter_annotations_t::message and
// crashreporter_annotations_t::message2 on behalf of Vector().
void ReadCrashReporterClientAnnotations(
std::vector<std::string>* vector_annotations) const;
// Reads dyld_error_string on behalf of Vector().
void ReadDyldErrorStringAnnotation(
std::vector<std::string>* vector_annotations) const;
// Reads CrashpadInfo::simple_annotations_ on behalf of SimpleMap().
void ReadCrashpadSimpleAnnotations(
std::map<std::string, std::string>* simple_map_annotations) const;
// Reads CrashpadInfo::annotations_list_ on behalf of AnnotationsList().
void ReadCrashpadAnnotationsList(
std::vector<AnnotationSnapshot>* vector_annotations) const;
std::string name_;
ProcessReaderMac* process_reader_; // weak
const MachOImageReader* image_reader_; // weak
};
} // namespace crashpad
#endif // CRASHPAD_SNAPSHOT_MAC_MACH_O_IMAGE_ANNOTATIONS_READER_H_