Function mod_GetSymbol

module/module.cpp:411–472

Returns a pointer to a function within a loaded module. If it returns NULL there was an error. Check mod_GetLastError to see if there was an error symstr is the name of the function you want to get the symbol for (Do NOT give any pre/suffix to this name) parmbytes is the size (in bytes) of the parameter list the function should have

// mod_GetLastError to see if there was an error symstr is the name of the function you want to get the symbol for (Do
// NOT give any pre/suffix to this name) parmbytes is the size (in bytes) of the parameter list the function should have
MODPROCADDRESS mod_GetSymbol(module *handle, const char *symstr, uint8_t parmbytes) {
  char buffer[256];
  MODPROCADDRESS sym;
  if (!handle) {
    ModLastError = MODERR_INVALIDHANDLE;
    return NULL;
  }
  if (!symstr) {
    ModLastError = MODERR_OTHER;
    return NULL;
  }
  if (!handle->handle) {
    ModLastError = MODERR_NOMOD;
    return NULL;
  }
#if defined(WIN32)
  // We need to first form the correct symbol name (for Windows)
  if (parmbytes == 255)
    sprintf(buffer, "%s", symstr);
  else
    sprintf(buffer, "_%s@%d", symstr, parmbytes);
  DWORD err;
  sym = GetProcAddress(handle->handle, buffer);
  if (!sym) {
    err = GetLastError();

    // Try again using no byte ordinals
    if (parmbytes != 255) {
      sprintf(buffer, "%s", symstr);
      sym = GetProcAddress(handle->handle, buffer);
      if (!sym)
        err = GetLastError();
    }
  }
  if (!sym) {
    // there was an error

    switch (err) {
    case ERROR_DLL_INIT_FAILED:
      ModLastError = MODERR_MODINITFAIL;
      break;
    case ERROR_DLL_NOT_FOUND:
      ModLastError = MODERR_MODNOTFOUND;
      break;
    case ERROR_INVALID_DLL:
      ModLastError = MODERR_INVALIDMOD;
      break;
    default:
      ModLastError = MODERR_OTHER;
      break;
    }
    return NULL;
  }
#elif defined(POSIX)
  sym = dlsym(handle->handle, symstr);
  if (!sym) {
    ModLastError = MODERR_OTHER;
    return NULL;