static void SSHReload(struct _SnortConfig *sc, char *args, void **new_config)
{
tSfPolicyUserContextId ssh_swap_config = (tSfPolicyUserContextId)*new_config;
tSfPolicyId policy_id = _dpd.getParserPolicy(sc);
SSHConfig * pPolicyConfig = NULL;
if (ssh_swap_config == NULL)
{
//create a context
ssh_swap_config = sfPolicyConfigCreate();
if (ssh_swap_config == NULL)
{
DynamicPreprocessorFatalMessage("Failed to allocate memory "
"for SSH config.\n");
}
if (_dpd.streamAPI == NULL)
{
DynamicPreprocessorFatalMessage("SetupSSH(): The Stream preprocessor must be enabled.\n");
}
*new_config = (void *)ssh_swap_config;
}
sfPolicyUserPolicySet (ssh_swap_config, policy_id);
pPolicyConfig = (SSHConfig *)sfPolicyUserDataGetCurrent(ssh_swap_config);
if (pPolicyConfig != NULL)
{
DynamicPreprocessorFatalMessage("SSH preprocessor can only be "
"configured once.\n");
}
pPolicyConfig = (SSHConfig *)calloc(1, sizeof(SSHConfig));
if (!pPolicyConfig)
{
DynamicPreprocessorFatalMessage("Could not allocate memory for "
"SSH preprocessor configuration.\n");
}
sfPolicyUserDataSetCurrent(ssh_swap_config, pPolicyConfig);
ParseSSHArgs(pPolicyConfig, (u_char *)args);
_dpd.addPreproc( sc, ProcessSSH, PRIORITY_APPLICATION, PP_SSH, PROTO_BIT__TCP );
_addPortsToStream5Filter(sc, pPolicyConfig, policy_id);
#ifdef TARGET_BASED
_addServicesToStream5Filter(sc, policy_id);
#endif
}
/* Initializes the SSH preprocessor module and registers
* it in the preprocessor list.
*
* PARAMETERS:
*
* argp: Pointer to argument string to process for config
* data.
*
* RETURNS: Nothing.
*/
static void
SSHInit( u_char* argp )
{
if(!_dpd.streamAPI)
{
_dpd.fatalMsg("SetupSSH(): The Stream preprocessor must be enabled.\n");
}
_dpd.addPreproc( ProcessSSH, PRIORITY_APPLICATION, PP_SSH );
ParseSSHArgs( argp );
#ifdef PERF_PROFILING
_dpd.addPreprocProfileFunc("ssh", (void *)&sshPerfStats, 0, _dpd.totalPerfStats);
#endif
}
/* Initializes the SSH preprocessor module and registers
* it in the preprocessor list.
*
* PARAMETERS:
*
* argp: Pointer to argument string to process for config
* data.
*
* RETURNS: Nothing.
*/
static void SSHInit(char *argp)
{
tSfPolicyId policy_id = _dpd.getParserPolicy();
SSHConfig *pPolicyConfig = NULL;
if (ssh_config == NULL)
{
//create a context
ssh_config = sfPolicyConfigCreate();
if (ssh_config == NULL)
{
DynamicPreprocessorFatalMessage("Failed to allocate memory "
"for SSH config.\n");
}
if (_dpd.streamAPI == NULL)
{
DynamicPreprocessorFatalMessage("SetupSSH(): The Stream preprocessor must be enabled.\n");
}
_dpd.addPreprocConfCheck(SSHCheckConfig);
_dpd.addPreprocExit(SSHCleanExit, NULL, PRIORITY_LAST, PP_SSH);
#ifdef PERF_PROFILING
_dpd.addPreprocProfileFunc("ssh", (void *)&sshPerfStats, 0, _dpd.totalPerfStats);
#endif
#ifdef TARGET_BASED
ssh_app_id = _dpd.findProtocolReference("ssh");
if (ssh_app_id == SFTARGET_UNKNOWN_PROTOCOL)
ssh_app_id = _dpd.addProtocolReference("ssh");
#endif
}
sfPolicyUserPolicySet (ssh_config, policy_id);
pPolicyConfig = (SSHConfig *)sfPolicyUserDataGetCurrent(ssh_config);
if (pPolicyConfig != NULL)
{
DynamicPreprocessorFatalMessage("SSH preprocessor can only be "
"configured once.\n");
}
pPolicyConfig = (SSHConfig *)calloc(1, sizeof(SSHConfig));
if (!pPolicyConfig)
{
DynamicPreprocessorFatalMessage("Could not allocate memory for "
"SSH preprocessor configuration.\n");
}
sfPolicyUserDataSetCurrent(ssh_config, pPolicyConfig);
ParseSSHArgs(pPolicyConfig, (u_char *)argp);
_dpd.addPreproc( ProcessSSH, PRIORITY_APPLICATION, PP_SSH, PROTO_BIT__TCP );
_addPortsToStream5Filter(pPolicyConfig, policy_id);
#ifdef TARGET_BASED
_addServicesToStream5Filter(policy_id);
#endif
}
