Function lua_mem_patch

src/agent/lua/api_memory.c:634–663

}

static int lua_mem_patch(lua_State* L) {
    uintptr_t address = (uintptr_t)luaL_checkinteger(L, 1);
    size_t patch_len;
    const char* patch_bytes = luaL_checklstring(L, 2, &patch_len);

    LOGI("Memory.patch: address=0x%lx, len=%zu", (unsigned long)address, patch_len);

    size_t page_size = sysconf(_SC_PAGESIZE);
    uintptr_t page_start = address & ~(page_size - 1);
    size_t region_size = ((address + patch_len - page_start) + page_size - 1) & ~(page_size - 1);

    if (mprotect((void*)page_start, region_size, PROT_READ | PROT_WRITE | PROT_EXEC) != 0) {
        char err_msg[256];
        snprintf(err_msg, sizeof(err_msg), "ERROR: mprotect failed at 0x%lx", (unsigned long)address);
        send_to_cli(err_msg);
        lua_pushboolean(L, 0);
        lua_pushstring(L, "mprotect failed");
        return 2;
    }

    memcpy((void*)address, patch_bytes, patch_len);


    char success_msg[256];
    snprintf(success_msg, sizeof(success_msg), "✓ Patched %zu bytes at 0x%lx", patch_len, (unsigned long)address);
    send_to_cli(success_msg);

    lua_pushboolean(L, 1);
    return 1;
}

/*
 * hexdump(target [, length])