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Merge pull request #337 from aviraxp/main

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Fix read() and write() usages
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Marcos 2024-06-17 21:44:57 +02:00 committed by GitHub
commit b2b60f781e
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1 changed files with 34 additions and 8 deletions
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42
app/src/main/cpp/main.cpp
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@ -19,6 +19,32 @@ typedef void (*T_Callback)(void *, const char *, const char *, uint32_t);
static T_Callback o_callback = nullptr;
ssize_t xread(int fd, void *buffer, size_t count) {
ssize_t total = 0;
char *buf = (char *)buffer;
while (count > 0) {
ssize_t ret = read(fd, buf, count);
if (ret < 0) return -1;
buf += ret;
total += ret;
count -= ret;
}
return total;
}
ssize_t xwrite(int fd, void *buffer, size_t count) {
ssize_t total = 0;
char *buf = (char *)buffer;
while (count > 0) {
ssize_t ret = write(fd, buf, count);
if (ret < 0) return -1;
buf += ret;
total += ret;
count -= ret;
}
return total;
}
static void modify_callback(void *cookie, const char *name, const char *value, uint32_t serial) {
if (cookie == nullptr || name == nullptr || value == nullptr || o_callback == nullptr) return;
@ -115,8 +141,8 @@ public:
int fd = api->connectCompanion();
read(fd, &dexSize, sizeof(long));
read(fd, &jsonSize, sizeof(long));
xread(fd, &dexSize, sizeof(long));
xread(fd, &jsonSize, sizeof(long));
LOGD("Dex file size: %ld", dexSize);
LOGD("Json file size: %ld", jsonSize);
@ -128,12 +154,12 @@ public:
}
dexVector.resize(dexSize);
read(fd, dexVector.data(), dexSize);
xread(fd, dexVector.data(), dexSize);
std::vector<uint8_t> jsonVector;
jsonVector.resize(jsonSize);
read(fd, jsonVector.data(), jsonSize);
xread(fd, jsonVector.data(), jsonSize);
close(fd);
@ -236,11 +262,11 @@ static void companion(int fd) {
long dexSize = dexVector.size();
long jsonSize = jsonVector.size();
write(fd, &dexSize, sizeof(long));
write(fd, &jsonSize, sizeof(long));
xwrite(fd, &dexSize, sizeof(long));
xwrite(fd, &jsonSize, sizeof(long));
write(fd, dexVector.data(), dexSize);
write(fd, jsonVector.data(), jsonSize);
xwrite(fd, dexVector.data(), dexSize);
xwrite(fd, jsonVector.data(), jsonSize);
}
REGISTER_ZYGISK_MODULE(PlayIntegrityFix)