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Connect to companion only in gms process

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This commit is contained in:
LoveSy
2024-07-21 02:39:40 +08:00
committed by 5ec1cff
parent 9be33d9528
commit 7cb2ad0e13
1 changed files with 57 additions and 50 deletions
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107
module/src/main/cpp/zygisk/main.cpp
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@@ -104,19 +104,6 @@ public:
void preAppSpecialize(AppSpecializeArgs *args) override {
api_->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
int enabled = 0;
SpoofConfig spoofConfig{};
auto fd = api_->connectCompanion();
if (fd >= 0) [[likely]] {
// read enabled
xread(fd, &enabled, sizeof(enabled));
if (enabled) {
xread(fd, &spoofConfig, sizeof(spoofConfig));
}
close(fd);
}
if (!enabled) return;
if (args->app_data_dir == nullptr) {
return;
}
@@ -129,6 +116,18 @@ public:
if (dir.ends_with("/com.google.android.gms") &&
process == "com.google.android.gms.unstable") {
int enabled = 0;
SpoofConfig spoofConfig{};
auto fd = api_->connectCompanion();
if (fd >= 0) [[likely]] {
// read enabled
xread(fd, &enabled, sizeof(enabled));
if (enabled) {
xread(fd, &spoofConfig, sizeof(spoofConfig));
}
close(fd);
}
if (!enabled) return;
LOGI("spoofing build vars in GMS!");
auto buildClass = env_->FindClass("android/os/Build");
auto buildVersionClass = env_->FindClass("android/os/Build$VERSION");
@@ -145,7 +144,9 @@ public:
std::remove_cvref_t<decltype(args)>::getField(),
args.value.data()), true))
? void(0)
: LOGE("Failed to set %s to %s", std::remove_cvref_t<decltype(args)>::getField(),
: LOGE("%s failed to set %s to %s",
std::remove_cvref_t<decltype(args)>::isVersion() ? "VERSION" : "Build",
std::remove_cvref_t<decltype(args)>::getField(),
args.value.data())), ...);
}, spoofConfig);
}
@@ -202,6 +203,45 @@ private:
}
};
void read_config(FILE *config, SpoofConfig &spoof_config) {
char *l = nullptr;
struct finally {
char *(&l);
~finally() { free(l); }
} finally{l};
size_t len = 0;
ssize_t n;
while ((n = getline(&l, &len, config)) != -1) {
if (n <= 1) continue;
std::string_view line{l, static_cast<size_t>(n)};
if (line.back() == '\n') {
line.remove_suffix(1);
}
auto d = line.find_first_of('=');
if (d == std::string_view::npos) {
LOGW("Ignore invalid line %.*s", static_cast<int>(line.size()), line.data());
continue;
}
auto key = line.substr(0, d);
trim(key);
auto value = line.substr(d + 1);
trim(value);
std::apply([&key, &value](auto &&... args) {
((key == std::remove_cvref_t<decltype(args)>::getField() &&
(LOGD("Read config: %.*s = %.*s", static_cast<int>(key.size()), key.data(),
static_cast<int>(value.size()), value.data()),
args.value.size() >= value.size() + 1 ?
(args.has_value = true,
strlcpy(args.value.data(), value.data(),
std::min(args.value.size(), value.size() + 1))) :
(LOGW("Config value %.*s for %.*s is too long, ignored",
static_cast<int>(value.size()), value.data(),
static_cast<int>(key.size()), key.data()), true))) || ...);
}, spoof_config);
}
}
static void companion_handler(int fd) {
constexpr auto kSpoofConfigFile = "/data/adb/tricky_store/spoof_build_vars"sv;
constexpr auto kDefaultSpoofConfig =
@@ -240,43 +280,10 @@ SECURITY_PATCH=2017-12-05
LOGE("[companion_handler] Failed to open spoof_build_vars");
return;
}
SpoofConfig spoof_config{};
{
std::unique_ptr<FILE, decltype([](auto *f) {fclose(f); })> config {fdopen(cfd, "r")};
char *l = nullptr;
struct finally { char *l; ~finally() { free(l); } } finally{l};
size_t len = 0;
ssize_t n;
while ((n = getline(&l, &len, config.get())) != -1) {
if (n == 0) continue;
std::string_view line{l, static_cast<size_t>(n)};
if (line.back() == '\n') {
line.remove_suffix(1);
}
auto d = line.find_first_of('=');
if (d == std::string_view::npos) {
LOGW("Ignore invalid line %.*s", static_cast<int>(line.size()), line.data());
continue;
}
auto key = line.substr(0, d);
trim(key);
auto value = line.substr(d + 1);
trim(value);
std::apply([&key, &value](auto &&... args) {
((key == std::remove_cvref_t<decltype(args)>::getField() &&
(LOGD("Read config: %.*s = %.*s", static_cast<int>(key.size()), key.data(),
static_cast<int>(value.size()), value.data()),
args.value.size() >= value.size() + 1 ?
(args.has_value = true,
strlcpy(args.value.data(), value.data(),
std::min(args.value.size(), value.size() + 1))) :
(LOGW("Config value %.*s for %.*s is too long, ignored",
static_cast<int>(value.size()), value.data(),
static_cast<int>(key.size()), key.data()), true))) || ...);
}, spoof_config);
}
}
SpoofConfig spoof_config{};
std::unique_ptr<FILE, decltype([](auto *f) { fclose(f); })> config{fdopen(cfd, "r")};
read_config(config.get(), spoof_config);
xwrite(fd, &spoof_config, sizeof(spoof_config));
}