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Copy the list of hooks to run before iterating on them and running them

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Running hooks could result in the hook list getting mutated, leading
to potential crashes.

Fixes #1222
This commit is contained in:
Maxime Coste 2017-02-19 12:08:13 +00:00
parent 38102595ef
commit 889a2144d4
1 changed files with 10 additions and 7 deletions
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17
src/hook_manager.cc
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@ -68,25 +68,28 @@ void HookManager::run_hook(StringView hook_name,
auto start_time = profile ? Clock::now() : TimePoint{};
auto& disabled_hooks = context.options()["disabled_hooks"].get<Regex>();
bool hook_error = false;
Vector<std::pair<String, HookFunc>> hooks_to_run;
for (auto& hook : hook_list_it->value)
{
if (not hook.key.empty() and not disabled_hooks.empty() and
if (hook.key.empty() or disabled_hooks.empty() or
regex_match(hook.key.begin(), hook.key.end(), disabled_hooks))
continue;
hooks_to_run.push_back({hook.key, hook.value});
}
bool hook_error = false;
for (auto& hook : hooks_to_run)
{
try
{
if (debug_flags & DebugFlags::Hooks)
write_to_debug_buffer(format("hook {}/{}", hook_name, hook.key));
hook.value(param, context);
write_to_debug_buffer(format("hook {}/{}", hook_name, hook.first));
hook.second(param, context);
}
catch (runtime_error& err)
{
hook_error = true;
write_to_debug_buffer(format("error running hook {}({})/{}: {}",
hook_name, param, hook.key, err.what()));
hook_name, param, hook.first, err.what()));
}
}