Magisk/native/jni/init/raw_data.cpp

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#include "raw_data.hpp"
using namespace std;
int mmap_data::patch(str_pairs list) {
if (buf == nullptr)
return 0;
int count = 0;
for (uint8_t *p = buf, *eof = buf + sz; p < eof; ++p) {
for (auto [from, to] : list) {
if (memcmp(p, from.data(), from.length() + 1) == 0) {
LOGD("Replace [%s] -> [%s]\n", from.data(), to.data());
memset(p, 0, from.length());
memcpy(p, to.data(), to.length());
++count;
p += from.length();
}
}
}
return count;
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}
bool mmap_data::contains(string_view pattern) {
if (buf == nullptr)
return false;
for (uint8_t *p = buf, *eof = buf + sz; p < eof; ++p) {
if (memcmp(p, pattern.data(), pattern.length() + 1) == 0) {
LOGD("Found pattern [%s]\n", pattern.data());
return true;
}
}
return false;
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}
void mmap_data::consume(mmap_data &other) {
buf = other.buf;
sz = other.sz;
other.buf = nullptr;
other.sz = 0;
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}
mmap_data mmap_data::rw(const char *name) {
mmap_data data;
mmap_rw(name, data.buf, data.sz);
return data;
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}
mmap_data mmap_data::ro(const char *name) {
mmap_data data;
mmap_ro(name, data.buf, data.sz);
return data;
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}