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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/safe_browsing/extension_telemetry/extension_js_callstacks.h"
#include "base/containers/span.h"
#include "base/debug/crash_logging.h"
#include "base/hash/sha1.h"
#include "base/strings/utf_string_conversions.h"
namespace {
constexpr unsigned int kMaxCallStacks = 3;
}
namespace safe_browsing {
ExtensionJSCallStacks::ExtensionJSCallStacks() = default;
ExtensionJSCallStacks::~ExtensionJSCallStacks() = default;
ExtensionJSCallStacks::ExtensionJSCallStacks(const ExtensionJSCallStacks& src) =
default;
void ExtensionJSCallStacks::Add(const extensions::StackTrace& callstack) {
if (callstack.empty() || siginfo_callstack_map_.size() == kMaxCallStacks) {
return;
}
SignalInfoJSCallStack siginfo_callstack = ToSignalInfoJSCallStack(callstack);
std::string key = GetUniqueId(siginfo_callstack);
siginfo_callstack_map_.emplace(std::move(key), std::move(siginfo_callstack));
}
RepeatedPtrField<SignalInfoJSCallStack> ExtensionJSCallStacks::GetAll() {
RepeatedPtrField<SignalInfoJSCallStack> siginfo_callstacks;
for (auto& [key, siginfo_callstack] : siginfo_callstack_map_) {
siginfo_callstacks.Add(std::move(siginfo_callstack));
}
return siginfo_callstacks;
}
// static
unsigned int ExtensionJSCallStacks::MaxCallStacks() {
return kMaxCallStacks;
}
// static
SignalInfoJSCallStack ExtensionJSCallStacks::ToSignalInfoJSCallStack(
const extensions::StackTrace& callstack) {
SignalInfoJSCallStack siginfo_stack;
for (auto& frame : callstack) {
SignalInfoJSCallStackFrame siginfo_frame;
siginfo_frame.set_function_name(base::UTF16ToUTF8(frame.function));
siginfo_frame.set_script_name(base::UTF16ToUTF8(frame.source));
siginfo_frame.set_line(frame.line_number);
siginfo_frame.set_column(frame.column_number);
*siginfo_stack.add_frames() = std::move(siginfo_frame);
}
return siginfo_stack;
}
// static
extensions::StackTrace ExtensionJSCallStacks::ToExtensionsStackTrace(
const SignalInfoJSCallStack& siginfo_callstack) {
extensions::StackTrace stack_trace;
for (int i = 0; i < siginfo_callstack.frames_size(); i++) {
const SignalInfoJSCallStackFrame& siginfo_frame =
siginfo_callstack.frames(i);
extensions::StackFrame frame;
frame.line_number = siginfo_frame.line();
frame.column_number = siginfo_frame.column();
frame.source = base::UTF8ToUTF16(siginfo_frame.script_name());
frame.function = base::UTF8ToUTF16(siginfo_frame.function_name());
stack_trace.push_back(std::move(frame));
}
return stack_trace;
}
// static
std::string ExtensionJSCallStacks::GetUniqueId(
const SignalInfoJSCallStack& siginfo_callstack) {
std::stringstream ss;
for (auto& siginfo_frame : siginfo_callstack.frames()) {
ss << siginfo_frame.function_name() << siginfo_frame.script_name()
<< siginfo_frame.line() << siginfo_frame.column();
}
return base::SHA1HashString(ss.str());
}
// Used for debug logging only.
// static
std::string ExtensionJSCallStacks::SignalInfoJSCallStackAsString(
const SignalInfoJSCallStack& js_callstack) {
std::stringstream ss;
for (const auto& frame : js_callstack.frames()) {
ss << "\n function: " << frame.function_name();
ss << " script: " << frame.script_name();
ss << " line: " << frame.line();
ss << " col: " << frame.column();
}
ss << "\n";
return ss.str();
}
} // namespace safe_browsing
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