91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
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#include <stdio.h>
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#include <string.h>
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#include <dlfcn.h>
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#include <sys/mman.h> /* PROT_* */
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#include "include/globals.h"
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#include "include/sdk.h"
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#include "include/util.h"
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game_id this_game_id = HL;
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vec3_t g_punchAngles = { 0, 0, 0 };
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void* hw;
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void** h_client;
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DECL_INTF(cl_enginefunc_t, engine);
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DECL_INTF(cl_clientfunc_t, client);
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DECL_INTF(playermove_t, pmove);
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DECL_INTF(engine_studio_api_t, enginestudio);
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DECL_INTF(StudioModelRenderer_t, studiomodelrenderer);
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/* Game struct with some useful info */
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game_t* game_info;
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/* Array of extra_player_info's for each player */
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void* player_extra_info;
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/* Updated in CL_CreateMove hook */
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cl_entity_t* localplayer = NULL;
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/*----------------------------------------------------------------------------*/
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bool globals_init(void) {
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/*
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* Get handler for hw.so
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* RTLD_LAZY: If the symbol is never referenced, then it is never resolved.
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* RTLD_NOLOAD: Don't load the shared object.
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*/
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hw = dlopen("hw.so", RTLD_LAZY | RTLD_NOLOAD);
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if (!hw) {
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printf("hl-cheat: globals_init: can't open hw.so\n");
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return false;
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}
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h_client = (void**)dlsym(hw, "hClientDLL");
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if (!h_client) {
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printf("hl-cheat: globals_init: can't find hClientDLL\n");
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return false;
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}
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/* Get symbol addresses using dlsym and the handler we just opened */
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i_engine = (cl_enginefunc_t*)dlsym(hw, "cl_enginefuncs");
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i_client = (cl_clientfunc_t*)dlsym(hw, "cl_funcs");
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i_pmove = *(playermove_t**)dlsym(hw, "pmove");
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i_enginestudio = (engine_studio_api_t*)dlsym(hw, "engine_studio_api");
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const char* SMR_STR = "g_StudioRenderer"; /* For clang-format */
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i_studiomodelrenderer = *(StudioModelRenderer_t**)dlsym(*h_client, SMR_STR);
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player_extra_info = dlsym(*h_client, "g_PlayerExtraInfo");
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game_info = *(game_t**)dlsym(hw, "game");
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if (!i_engine || !i_client || !i_pmove || !i_enginestudio ||
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!i_studiomodelrenderer || !game_info) {
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printf("hl-cheat: globals_init: couldn't load some symbols\n");
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return false;
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}
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if (!protect_addr(i_studiomodelrenderer, PROT_READ | PROT_WRITE)) {
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printf("hl-cheat: globals_init: couldn't unprotect address of SMR\n");
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return false;
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}
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globals_store();
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return true;
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}
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void globals_store(void) {
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memcpy(&o_engine, i_engine, sizeof(cl_enginefunc_t));
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memcpy(&o_client, i_client, sizeof(cl_clientfunc_t));
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memcpy(&o_enginestudio, i_enginestudio, sizeof(engine_studio_api_t));
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}
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void globals_restore(void) {
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memcpy(i_engine, &o_engine, sizeof(cl_enginefunc_t));
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memcpy(i_client, &o_client, sizeof(cl_clientfunc_t));
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memcpy(i_enginestudio, &o_enginestudio, sizeof(engine_studio_api_t));
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}
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