Init

Plugin/LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) 2020 The Skyline Project
+Copyright (c) 2021 MasaGratoR
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Plugin/Makefile

@@ -0,0 +1,16 @@
+.PHONY: all clean skyline
+
+NAME 			:= $(shell basename $(CURDIR))
+NAME_LOWER		:= $(shell echo $(NAME) | tr A-Z a-z)
+
+BUILD_DIR 		:= build
+
+MAKE_NSO		:= nso.mk
+
+all: skyline
+
+skyline:
+	$(MAKE) all -f $(MAKE_NSO) MAKE_NSO=$(MAKE_NSO) BUILD=$(BUILD_DIR) TARGET=$(NAME)
+
+clean:
+	$(MAKE) clean -f $(MAKE_NSO)

Plugin/exported.txt

@@ -0,0 +1,14 @@
+{
+    global:
+        __custom_init;
+        __custom_fini;
+        skyline_tcp_send_raw;
+        getRegionAddress;
+        A64HookFunction;
+        A64InlineHook;
+        sky_memcpy;
+        get_program_id;
+        get_plugin_addresses;
+
+    local: *;
+};  

Plugin/include/ModuleObject.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <assert.h>
+#include <elf.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+namespace rtld {
+struct ModuleObject {
+   private:
+    // ResolveSymbols internals
+    inline void ResolveSymbolRelAbsolute(Elf64_Rel* entry);
+    inline void ResolveSymbolRelaAbsolute(Elf64_Rela* entry);
+    inline void ResolveSymbolRelJumpSlot(Elf64_Rel* entry, bool do_lazy_got_init);
+    inline void ResolveSymbolRelaJumpSlot(Elf64_Rela* entry, bool do_lazy_got_init);
+
+   public:
+    struct ModuleObject* next;
+    struct ModuleObject* prev;
+    union {
+        Elf64_Rel* rel;
+        Elf64_Rela* rela;
+        void* raw;
+    } rela_or_rel_plt;
+    union {
+        Elf64_Rel* rel;
+        Elf64_Rela* rela;
+    } rela_or_rel;
+    uint64_t module_base;
+    Elf64_Dyn* dynamic;
+    bool is_rela;
+    uint64_t rela_or_rel_plt_size;
+    void (*dt_init)(void);
+    void (*dt_fini)(void);
+    uint32_t* hash_bucket;
+    uint32_t* hash_chain;
+    char* dynstr;
+    Elf64_Sym* dynsym;
+    uint64_t dynstr_size;
+    void** got;
+    uint64_t rela_dyn_size;
+    uint64_t rel_dyn_size;
+    uint64_t rel_count;
+    uint64_t rela_count;
+    uint64_t hash_nchain_value;
+    uint64_t hash_nbucket_value;
+    uint64_t got_stub_ptr;
+#ifdef __RTLD_6XX__
+    uint64_t soname_idx;
+    uint64_t nro_size;
+    bool cannot_revert_symbols;
+#endif
+
+    void Initialize(uint64_t aslr_base, Elf64_Dyn* dynamic);
+    void Relocate();
+    Elf64_Sym* GetSymbolByName(const char* name);
+    void ResolveSymbols(bool do_lazy_got_init);
+    bool TryResolveSymbol(Elf64_Addr* target_symbol_address, Elf64_Sym* symbol);
+};
+
+#ifdef __RTLD_6XX__
+static_assert(sizeof(ModuleObject) == 0xD0, "ModuleObject size isn't valid");
+#else
+static_assert(sizeof(ModuleObject) == 0xB8, "ModuleObject size isn't valid");
+#endif
+}  // namespace rtld