diff options
Diffstat (limited to 'libraries/gamemode/include/gamemode_client.h')
| -rw-r--r-- | libraries/gamemode/include/gamemode_client.h | 328 |
1 files changed, 150 insertions, 178 deletions
diff --git a/libraries/gamemode/include/gamemode_client.h b/libraries/gamemode/include/gamemode_client.h index b6f7afd4..b186cd48 100644 --- a/libraries/gamemode/include/gamemode_client.h +++ b/libraries/gamemode/include/gamemode_client.h @@ -94,7 +94,7 @@ static volatile int internal_libgamemode_loaded = 1; /* Typedefs for the functions to load */ typedef int (*api_call_return_int)(void); -typedef const char *(*api_call_return_cstring)(void); +typedef const char* (*api_call_return_cstring)(void); typedef int (*api_call_pid_return_int)(pid_t); /* Storage for functors */ @@ -111,26 +111,26 @@ static api_call_pid_return_int REAL_internal_gamemode_query_status_for = NULL; * * Returns 0 on success and -1 on failure */ -__attribute__((always_inline)) static inline int internal_bind_libgamemode_symbol( - void *handle, const char *name, void **out_func, size_t func_size, bool required) +__attribute__((always_inline)) static inline int internal_bind_libgamemode_symbol(void* handle, + const char* name, + void** out_func, + size_t func_size, + bool required) { - void *symbol_lookup = NULL; - char *dl_error = NULL; - - /* Safely look up the symbol */ - symbol_lookup = dlsym(handle, name); - dl_error = dlerror(); - if (required && (dl_error || !symbol_lookup)) { - snprintf(internal_gamemode_client_error_string, - sizeof(internal_gamemode_client_error_string), - "dlsym failed - %s", - dl_error); - return -1; - } - - /* Have the symbol correctly, copy it to make it usable */ - memcpy(out_func, &symbol_lookup, func_size); - return 0; + void* symbol_lookup = NULL; + char* dl_error = NULL; + + /* Safely look up the symbol */ + symbol_lookup = dlsym(handle, name); + dl_error = dlerror(); + if (required && (dl_error || !symbol_lookup)) { + snprintf(internal_gamemode_client_error_string, sizeof(internal_gamemode_client_error_string), "dlsym failed - %s", dl_error); + return -1; + } + + /* Have the symbol correctly, copy it to make it usable */ + memcpy(out_func, &symbol_lookup, func_size); + return 0; } /** @@ -140,98 +140,74 @@ __attribute__((always_inline)) static inline int internal_bind_libgamemode_symbo */ __attribute__((always_inline)) static inline int internal_load_libgamemode(void) { - /* We start at 1, 0 is a success and -1 is a fail */ - if (internal_libgamemode_loaded != 1) { - return internal_libgamemode_loaded; - } - - /* Anonymous struct type to define our bindings */ - struct binding { - const char *name; - void **functor; - size_t func_size; - bool required; - } bindings[] = { - { "real_gamemode_request_start", - (void **)&REAL_internal_gamemode_request_start, - sizeof(REAL_internal_gamemode_request_start), - true }, - { "real_gamemode_request_end", - (void **)&REAL_internal_gamemode_request_end, - sizeof(REAL_internal_gamemode_request_end), - true }, - { "real_gamemode_query_status", - (void **)&REAL_internal_gamemode_query_status, - sizeof(REAL_internal_gamemode_query_status), - false }, - { "real_gamemode_error_string", - (void **)&REAL_internal_gamemode_error_string, - sizeof(REAL_internal_gamemode_error_string), - true }, - { "real_gamemode_request_start_for", - (void **)&REAL_internal_gamemode_request_start_for, - sizeof(REAL_internal_gamemode_request_start_for), - false }, - { "real_gamemode_request_end_for", - (void **)&REAL_internal_gamemode_request_end_for, - sizeof(REAL_internal_gamemode_request_end_for), - false }, - { "real_gamemode_query_status_for", - (void **)&REAL_internal_gamemode_query_status_for, - sizeof(REAL_internal_gamemode_query_status_for), - false }, - }; - - void *libgamemode = NULL; - - /* Try and load libgamemode */ - libgamemode = dlopen("libgamemode.so.0", RTLD_NOW); - if (!libgamemode) { - /* Attempt to load unversioned library for compatibility with older - * versions (as of writing, there are no ABI changes between the two - - * this may need to change if ever ABI-breaking changes are made) */ - libgamemode = dlopen("libgamemode.so", RTLD_NOW); - if (!libgamemode) { - snprintf(internal_gamemode_client_error_string, - sizeof(internal_gamemode_client_error_string), - "dlopen failed - %s", - dlerror()); - internal_libgamemode_loaded = -1; - return -1; - } - } - - /* Attempt to bind all symbols */ - for (size_t i = 0; i < sizeof(bindings) / sizeof(bindings[0]); i++) { - struct binding *binder = &bindings[i]; - - if (internal_bind_libgamemode_symbol(libgamemode, - binder->name, - binder->functor, - binder->func_size, - binder->required)) { - internal_libgamemode_loaded = -1; - return -1; - }; - } - - /* Success */ - internal_libgamemode_loaded = 0; - return 0; + /* We start at 1, 0 is a success and -1 is a fail */ + if (internal_libgamemode_loaded != 1) { + return internal_libgamemode_loaded; + } + + /* Anonymous struct type to define our bindings */ + struct binding { + const char* name; + void** functor; + size_t func_size; + bool required; + } bindings[] = { + { "real_gamemode_request_start", (void**)&REAL_internal_gamemode_request_start, sizeof(REAL_internal_gamemode_request_start), + true }, + { "real_gamemode_request_end", (void**)&REAL_internal_gamemode_request_end, sizeof(REAL_internal_gamemode_request_end), true }, + { "real_gamemode_query_status", (void**)&REAL_internal_gamemode_query_status, sizeof(REAL_internal_gamemode_query_status), false }, + { "real_gamemode_error_string", (void**)&REAL_internal_gamemode_error_string, sizeof(REAL_internal_gamemode_error_string), true }, + { "real_gamemode_request_start_for", (void**)&REAL_internal_gamemode_request_start_for, + sizeof(REAL_internal_gamemode_request_start_for), false }, + { "real_gamemode_request_end_for", (void**)&REAL_internal_gamemode_request_end_for, sizeof(REAL_internal_gamemode_request_end_for), + false }, + { "real_gamemode_query_status_for", (void**)&REAL_internal_gamemode_query_status_for, + sizeof(REAL_internal_gamemode_query_status_for), false }, + }; + + void* libgamemode = NULL; + + /* Try and load libgamemode */ + libgamemode = dlopen("libgamemode.so.0", RTLD_NOW); + if (!libgamemode) { + /* Attempt to load unversioned library for compatibility with older + * versions (as of writing, there are no ABI changes between the two - + * this may need to change if ever ABI-breaking changes are made) */ + libgamemode = dlopen("libgamemode.so", RTLD_NOW); + if (!libgamemode) { + snprintf(internal_gamemode_client_error_string, sizeof(internal_gamemode_client_error_string), "dlopen failed - %s", dlerror()); + internal_libgamemode_loaded = -1; + return -1; + } + } + + /* Attempt to bind all symbols */ + for (size_t i = 0; i < sizeof(bindings) / sizeof(bindings[0]); i++) { + struct binding* binder = &bindings[i]; + + if (internal_bind_libgamemode_symbol(libgamemode, binder->name, binder->functor, binder->func_size, binder->required)) { + internal_libgamemode_loaded = -1; + return -1; + }; + } + + /* Success */ + internal_libgamemode_loaded = 0; + return 0; } /** * Redirect to the real libgamemode */ -__attribute__((always_inline)) static inline const char *gamemode_error_string(void) +__attribute__((always_inline)) static inline const char* gamemode_error_string(void) { - /* If we fail to load the system gamemode, or we have an error string already, return our error - * string instead of diverting to the system version */ - if (internal_load_libgamemode() < 0 || internal_gamemode_client_error_string[0] != '\0') { - return internal_gamemode_client_error_string; - } + /* If we fail to load the system gamemode, or we have an error string already, return our error + * string instead of diverting to the system version */ + if (internal_load_libgamemode() < 0 || internal_gamemode_client_error_string[0] != '\0') { + return internal_gamemode_client_error_string; + } - return REAL_internal_gamemode_error_string(); + return REAL_internal_gamemode_error_string(); } /** @@ -246,22 +222,22 @@ __attribute__((always_inline)) static inline #endif int gamemode_request_start(void) { - /* Need to load gamemode */ - if (internal_load_libgamemode() < 0) { + /* Need to load gamemode */ + if (internal_load_libgamemode() < 0) { #ifdef GAMEMODE_AUTO - fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); + fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); #endif - return -1; - } + return -1; + } - if (REAL_internal_gamemode_request_start() < 0) { + if (REAL_internal_gamemode_request_start() < 0) { #ifdef GAMEMODE_AUTO - fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); + fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); #endif - return -1; - } + return -1; + } - return 0; + return 0; } /* Redirect to the real libgamemode */ @@ -272,94 +248,90 @@ __attribute__((always_inline)) static inline #endif int gamemode_request_end(void) { - /* Need to load gamemode */ - if (internal_load_libgamemode() < 0) { + /* Need to load gamemode */ + if (internal_load_libgamemode() < 0) { #ifdef GAMEMODE_AUTO - fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); + fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); #endif - return -1; - } + return -1; + } - if (REAL_internal_gamemode_request_end() < 0) { + if (REAL_internal_gamemode_request_end() < 0) { #ifdef GAMEMODE_AUTO - fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); + fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string()); #endif - return -1; - } + return -1; + } - return 0; + return 0; } /* Redirect to the real libgamemode */ __attribute__((always_inline)) static inline int gamemode_query_status(void) { - /* Need to load gamemode */ - if (internal_load_libgamemode() < 0) { - return -1; - } - - if (REAL_internal_gamemode_query_status == NULL) { - snprintf(internal_gamemode_client_error_string, - sizeof(internal_gamemode_client_error_string), - "gamemode_query_status missing (older host?)"); - return -1; - } - - return REAL_internal_gamemode_query_status(); + /* Need to load gamemode */ + if (internal_load_libgamemode() < 0) { + return -1; + } + + if (REAL_internal_gamemode_query_status == NULL) { + snprintf(internal_gamemode_client_error_string, sizeof(internal_gamemode_client_error_string), + "gamemode_query_status missing (older host?)"); + return -1; + } + + return REAL_internal_gamemode_query_status(); } /* Redirect to the real libgamemode */ __attribute__((always_inline)) static inline int gamemode_request_start_for(pid_t pid) { - /* Need to load gamemode */ - if (internal_load_libgamemode() < 0) { - return -1; - } - - if (REAL_internal_gamemode_request_start_for == NULL) { - snprintf(internal_gamemode_client_error_string, - sizeof(internal_gamemode_client_error_string), - "gamemode_request_start_for missing (older host?)"); - return -1; - } - - return REAL_internal_gamemode_request_start_for(pid); + /* Need to load gamemode */ + if (internal_load_libgamemode() < 0) { + return -1; + } + + if (REAL_internal_gamemode_request_start_for == NULL) { + snprintf(internal_gamemode_client_error_string, sizeof(internal_gamemode_client_error_string), + "gamemode_request_start_for missing (older host?)"); + return -1; + } + + return REAL_internal_gamemode_request_start_for(pid); } /* Redirect to the real libgamemode */ __attribute__((always_inline)) static inline int gamemode_request_end_for(pid_t pid) { - /* Need to load gamemode */ - if (internal_load_libgamemode() < 0) { - return -1; - } - - if (REAL_internal_gamemode_request_end_for == NULL) { - snprintf(internal_gamemode_client_error_string, - sizeof(internal_gamemode_client_error_string), - "gamemode_request_end_for missing (older host?)"); - return -1; - } - - return REAL_internal_gamemode_request_end_for(pid); + /* Need to load gamemode */ + if (internal_load_libgamemode() < 0) { + return -1; + } + + if (REAL_internal_gamemode_request_end_for == NULL) { + snprintf(internal_gamemode_client_error_string, sizeof(internal_gamemode_client_error_string), + "gamemode_request_end_for missing (older host?)"); + return -1; + } + + return REAL_internal_gamemode_request_end_for(pid); } /* Redirect to the real libgamemode */ __attribute__((always_inline)) static inline int gamemode_query_status_for(pid_t pid) { - /* Need to load gamemode */ - if (internal_load_libgamemode() < 0) { - return -1; - } - - if (REAL_internal_gamemode_query_status_for == NULL) { - snprintf(internal_gamemode_client_error_string, - sizeof(internal_gamemode_client_error_string), - "gamemode_query_status_for missing (older host?)"); - return -1; - } - - return REAL_internal_gamemode_query_status_for(pid); + /* Need to load gamemode */ + if (internal_load_libgamemode() < 0) { + return -1; + } + + if (REAL_internal_gamemode_query_status_for == NULL) { + snprintf(internal_gamemode_client_error_string, sizeof(internal_gamemode_client_error_string), + "gamemode_query_status_for missing (older host?)"); + return -1; + } + + return REAL_internal_gamemode_query_status_for(pid); } -#endif // CLIENT_GAMEMODE_H +#endif // CLIENT_GAMEMODE_H |