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fix: fix a crash in safeStorage on Linux (#34147)

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On Linux, `isEncryptionAvailable()` was crashing instead of returning a
boolean before the 'ready' event was emitted by the app. The reason of
the crash is that [`CreateKeyStorage()`](https://source.chromium.org/chromium/chromium/src/+/main:components/os_crypt/os_crypt_linux.cc;l=74;drc=35be6215ec8f09e50176f36753c68f26c63d1885;bpv=1;bpt=0)
expects the config to be set but the function responsible for setting the
config, [`SetConfig()`](https://source.chromium.org/chromium/chromium/src/+/main:components/os_crypt/os_crypt_linux.cc;l=237;drc=35be6215ec8f09e50176f36753c68f26c63d1885;bpv=1;bpt=0),
is called only after the app is ready inside [`PostCreateMainMessageLoop()`](https://github.com/electron/electron/blob/main/shell/browser/electron_browser_main_parts.cc#L499).
So this changes `IsEncryptionAvailable()` to return `false` when the app
is not ready on Linux and uses that instead of the raw API in other
places like `EncryptString()` and `DecryptString()`.

Fixes: https://github.com/electron/electron/issues/32206
Signed-off-by: Darshan Sen <raisinten@gmail.com>

Co-authored-by: Darshan Sen <raisinten@gmail.com>
This commit is contained in:
trop[bot]
2022-05-11 10:20:30 -04:00
committed by GitHub
parent 49ee456797
commit b07e17a3bb
4 changed files with 79 additions and 4 deletions
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21
shell/browser/api/electron_api_safe_storage.cc
View File

@@ -31,12 +31,24 @@ void SetElectronCryptoReady(bool ready) {
#endif
bool IsEncryptionAvailable() {
#if BUILDFLAG(IS_LINUX)
// Calling IsEncryptionAvailable() before the app is ready results in a crash
// on Linux.
// Refs: https://github.com/electron/electron/issues/32206.
if (!Browser::Get()->is_ready())
return false;
#endif
return OSCrypt::IsEncryptionAvailable();
}
v8::Local<v8::Value> EncryptString(v8::Isolate* isolate,
const std::string& plaintext) {
if (!OSCrypt::IsEncryptionAvailable()) {
if (!IsEncryptionAvailable()) {
if (!Browser::Get()->is_ready()) {
gin_helper::ErrorThrower(isolate).ThrowError(
"safeStorage cannot be used before app is ready");
return v8::Local<v8::Value>();
}
gin_helper::ErrorThrower(isolate).ThrowError(
"Error while decrypting the ciphertext provided to "
"safeStorage.decryptString. "
@@ -59,7 +71,12 @@ v8::Local<v8::Value> EncryptString(v8::Isolate* isolate,
}
std::string DecryptString(v8::Isolate* isolate, v8::Local<v8::Value> buffer) {
if (!OSCrypt::IsEncryptionAvailable()) {
if (!IsEncryptionAvailable()) {
if (!Browser::Get()->is_ready()) {
gin_helper::ErrorThrower(isolate).ThrowError(
"safeStorage cannot be used before app is ready");
return "";
}
gin_helper::ErrorThrower(isolate).ThrowError(
"Error while decrypting the ciphertext provided to "
"safeStorage.decryptString. "