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-rw-r--r--src/hook/payloads/SysLoadLibrary.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/src/hook/payloads/SysLoadLibrary.c b/src/hook/payloads/SysLoadLibrary.c
new file mode 100644
index 0000000..314426d
--- /dev/null
+++ b/src/hook/payloads/SysLoadLibrary.c
@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <string.h>
+#include <assert.h>
+#include <dlfcn.h>
+
+#define _DEBUG 1
+#define Q_IsAbsolutePath V_IsAbsolutePath
+#define Assert(f) assert(f)
+#define CommandLine CommandLine_Tier0
+#define Msg printf
+#define V_strcpy_safe strcpy
+#define Q_snprintf snprintf
+#define _getcwd getcwd
+
+typedef void* HMODULE;
+typedef int Sys_Flags;
+typedef void* CSysModule;
+
+static bool (*V_IsAbsolutePath)(const char *pPath) = NULL;
+static HMODULE (*Sys_LoadLibrary)(const char *pLibraryName, Sys_Flags flags) = NULL;
+static char* (*CommandLine__ParmValue)(const char* param) = NULL;
+
+CSysModule *Sys_LoadModule_replacement( const char *pModuleName, Sys_Flags flags /* = SYS_NOFLAGS (0) */ )
+{
+ // If using the Steam filesystem, either the DLL must be a minimum footprint
+ // file in the depot (MFP) or a filesystem GetLocalCopy() call must be made
+ // prior to the call to this routine.
+ char szCwd[1024];
+ HMODULE hDLL = NULL;
+
+ if ( !Q_IsAbsolutePath( pModuleName ) )
+ {
+ char szAbsoluteModuleName[1024];
+
+ // check if the sourcemod provides the library
+ const char *pGameDir = CommandLine__ParmValue("-game");
+ if ( pGameDir )
+ {
+ V_strcpy_safe( szCwd, pGameDir );
+ if (szCwd[strlen(szCwd) - 1] == '/' || szCwd[strlen(szCwd) - 1] == '\\' )
+ {
+ szCwd[strlen(szCwd) - 1] = 0;
+ }
+
+ Q_snprintf( szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/bin/%s", szCwd, pModuleName );
+
+ hDLL = Sys_LoadLibrary( szAbsoluteModuleName, flags );
+ }
+
+ // if the lib was not in the mod check the base game
+ if (!hDLL)
+ {
+ // full path wasn't passed in, using the current working dir
+ Assert( _getcwd( szCwd, sizeof( szCwd ) ) );
+
+ if (szCwd[strlen(szCwd) - 1] == '/' || szCwd[strlen(szCwd) - 1] == '\\' )
+ {
+ szCwd[strlen(szCwd) - 1] = 0;
+ }
+
+ size_t cCwd = strlen( szCwd );
+ if ( strstr( pModuleName, "bin/") == pModuleName || ( szCwd[ cCwd - 1 ] == 'n' && szCwd[ cCwd - 2 ] == 'i' && szCwd[ cCwd - 3 ] == 'b' ) )
+ {
+ // don't make bin/bin path
+ Q_snprintf( szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/%s", szCwd, pModuleName );
+ }
+ else
+ {
+ Q_snprintf( szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/bin/%s", szCwd, pModuleName );
+ }
+ hDLL = Sys_LoadLibrary( szAbsoluteModuleName, flags );
+ }
+ }
+
+ if ( !hDLL )
+ {
+ // full path failed, let LoadLibrary() try to search the PATH now
+ hDLL = Sys_LoadLibrary( pModuleName, flags );
+#if defined( _DEBUG )
+ if ( !hDLL )
+ {
+ // So you can see what the error is in the debugger...
+ Msg( "Failed to load %s: %s\n", pModuleName, dlerror() );
+ }
+#endif // DEBUG
+ }
+
+ return hDLL;
+}
+
+
+void __attribute__((constructor)) lib_entry()
+{
+ //It prints "Injected!" once the library gets loaded.
+ fprintf(stderr, "Injected!\n");
+}