NSAPI_PUBLIC int process_notification(pblock *param, Session *sn, Request *rq)
{
void* agent_config = NULL;
agent_config = am_web_get_agent_configuration();
process_new_notification(param,sn,rq,agent_config);
am_web_delete_agent_configuration(agent_config);
return REQ_PROCEED;
}
/*
* Method to evaluate a non-boolean policy question for a resource.
*/
extern "C" am_status_t
am_policy_evaluate(am_policy_t policy_handle,
const char *sso_token,
const char *resource_name,
const char *action_name,
const am_map_t env_table,
am_map_t policy_response_map_ptr,
am_policy_result_t *policy_res) {
void* agent_config = am_web_get_agent_configuration();
AgentConfigurationRefCntPtr* agentConfigPtr =
(AgentConfigurationRefCntPtr*) agent_config;
return am_policy_evaluate_ignore_url_notenforced(policy_handle,
sso_token,
resource_name,
action_name,
env_table,
policy_response_map_ptr,
policy_res,
AM_FALSE,
(*agentConfigPtr)->properties);
}
/*
* Function Name: validate_session_policy
* This is the NSAPI directive funtion which gets called for each request
* It does session validation and policy check for each request.
* Input: As defined by a SAF
* Output: As defined by a SAF
*/
NSAPI_PUBLIC int
validate_session_policy(pblock *param, Session *sn, Request *rq) {
const char *thisfunc = "validate_session_policy()";
char *dpro_cookie = NULL;
am_status_t status = AM_SUCCESS;
int requestResult = REQ_ABORTED;
int notifResult = REQ_ABORTED;
const char *ruser = NULL;
am_map_t env_parameter_map = NULL;
am_policy_result_t result = AM_POLICY_RESULT_INITIALIZER;
void *args[] = { (void *)rq };
char *request_url = NULL;
char *orig_req = NULL ;
char *response = NULL;
char *clf_req = NULL;
char *server_protocol = NULL;
void *agent_config = NULL;
char *logout_url = NULL;
char *uri_hdr = NULL;
char *pathInfo_hdr = NULL;
char *method_hdr = NULL;
char *method = NULL;
char *virtHost_hdr = NULL;
char *query_hdr = NULL;
char *query = NULL;
char *protocol = "HTTP";
const char *clientIP_hdr_name = NULL;
char *clientIP_hdr = NULL;
char *clientIP = NULL;
const char *clientHostname_hdr_name = NULL;
char *clientHostname_hdr = NULL;
char *clientHostname = NULL;
am_status_t cdStatus = AM_FAILURE;
// check if agent is initialized.
// if not initialized, then call agent init function
// This needs to be synchronized as only one time agent
// initialization needs to be done.
if(agentInitialized != B_TRUE){
//Start critical section
crit_enter(initLock);
if(agentInitialized != B_TRUE){
am_web_log_debug("%s: Will call init.", thisfunc);
init_at_request();
if(agentInitialized != B_TRUE){
am_web_log_error("%s: Agent is still not intialized",
thisfunc);
//deny the access
requestResult = do_deny(sn, rq, status);
status = AM_FAILURE;
} else {
am_web_log_debug("%s: Agent intialized");
}
}
//end critical section
crit_exit(initLock);
}
if (status == AM_SUCCESS) {
// Get the agent configuration
agent_config = am_web_get_agent_configuration();
// Dump the entire set of request headers
if (am_web_is_max_debug_on()) {
char *header_str = pblock_pblock2str(rq->reqpb, NULL);
am_web_log_max_debug("%s: Headers: %s", thisfunc, header_str);
system_free(header_str);
}
}
// Get header values
if (status == AM_SUCCESS) {
status = get_header_value(rq->reqpb, REQUEST_URI,
B_TRUE, &uri_hdr, B_FALSE, NULL);
}
if (status == AM_SUCCESS) {
status = get_header_value(rq->vars, PATH_INFO,
B_FALSE, &pathInfo_hdr, B_FALSE, NULL);
}
if (status == AM_SUCCESS) {
status = get_header_value(rq->reqpb, REQUEST_METHOD,
B_TRUE, &method_hdr, B_TRUE, &method);
}
if (status == AM_SUCCESS) {
status = get_header_value(rq->headers, "ampxy_host",
B_TRUE, &virtHost_hdr, B_FALSE, NULL);
}
if (status == AM_SUCCESS) {
status = get_header_value(rq->reqpb, REQUEST_QUERY,
B_FALSE, &query_hdr, B_TRUE, &query);
}
if (security_active) {
protocol = "HTTPS";
}
// Get the request URL
if (status == AM_SUCCESS) {
if (am_web_is_proxy_override_host_port_set(agent_config) == AM_FALSE) {
status = am_web_get_request_url(virtHost_hdr, protocol,
NULL, 0, uri_hdr, query,
&request_url, agent_config);
if(status == AM_SUCCESS) {
am_web_log_debug("%s: Request_url: %s", thisfunc, request_url);
} else {
am_web_log_error("%s: Could not get the request URL. "
"Failed with error: %s.",
thisfunc, am_status_to_string(status));
}
}
}
if (status == AM_SUCCESS) {
if (am_web_is_proxy_override_host_port_set(agent_config) == AM_TRUE) {
const char *agent_host = am_web_get_agent_server_host(agent_config);
int agent_port = am_web_get_agent_server_port(agent_config);
if (agent_host != NULL) {
char *temp = NULL;
temp = replace_host_port(request_url, agent_host, agent_port,
agent_config);
if (temp != NULL) {
free(request_url);
request_url = temp;
}
}
am_web_log_debug("%s: Request_url after overriding "
"host and port: %s",
thisfunc, request_url);
}
}
if (status == AM_SUCCESS) {
// Check for magic notification URL
if (B_TRUE == am_web_is_notification(request_url, agent_config)) {
am_web_free_memory(request_url);
am_web_delete_agent_configuration(agent_config);
if(query != NULL) {
free(query);
query = NULL;
}
if(method != NULL) {
free(method);
method = NULL;
}
return REQ_PROCEED;
}
}
// Check if the SSO token is in the cookie header
if (status == AM_SUCCESS) {
requestResult = getISCookie(pblock_findval(COOKIE_HDR, rq->headers),
&dpro_cookie, agent_config);
if (requestResult == REQ_ABORTED) {
status = AM_FAILURE;
} else if (dpro_cookie != NULL) {
am_web_log_debug("%s: SSO token found in cookie header.",
thisfunc);
}
}
// Create the environment map
if( status == AM_SUCCESS) {
status = am_map_create(&env_parameter_map);
if( status != AM_SUCCESS) {
am_web_log_error("%s: Unable to create map, status = %s (%d)",
thisfunc, am_status_to_string(status), status);
}
}
// If there is a proxy in front of the agent, the user can set in the
// properties file the name of the headers that the proxy uses to set
// the real client IP and host name. In that case the agent needs
// to use the value of these headers to process the request
//
// Get the client IP address header set by the proxy, if there is one
if (status == AM_SUCCESS) {
clientIP_hdr_name = am_web_get_client_ip_header_name(agent_config);
if (clientIP_hdr_name != NULL) {
status = get_header_value(rq->headers, clientIP_hdr_name,
B_FALSE, &clientIP_hdr,
B_FALSE, NULL);
}
}
// Get the client host name header set by the proxy, if there is one
if (status == AM_SUCCESS) {
clientHostname_hdr_name =
am_web_get_client_hostname_header_name(agent_config);
if (clientHostname_hdr_name != NULL) {
status = get_header_value(rq->headers, clientHostname_hdr_name,
B_FALSE, &clientHostname_hdr,
B_FALSE, NULL);
}
}
// If the client IP and host name headers contain more than one
// value, take the first value.
if (status == AM_SUCCESS) {
if ((clientIP_hdr != NULL) || (clientHostname_hdr != NULL)) {
status = am_web_get_client_ip_host(clientIP_hdr,
clientHostname_hdr,
&clientIP, &clientHostname);
}
}
// Set the IP address and host name in the environment map
if ((status == AM_SUCCESS) && (clientIP != NULL)) {
status = am_web_set_host_ip_in_env_map(clientIP, clientHostname,
env_parameter_map, agent_config);
}
// If the client IP was not obtained previously,
// get it from the REMOTE_ADDR header.
if ((status == AM_SUCCESS) && (clientIP == NULL)) {
status = get_header_value(sn->client, REQUEST_IP_ADDR,
B_FALSE, &clientIP_hdr, B_TRUE, &clientIP);
}
// In CDSSO mode, check if the sso token is in the post data
if( status == AM_SUCCESS) {
if((am_web_is_cdsso_enabled(agent_config) == B_TRUE) &&
(strcmp(method, REQUEST_METHOD_POST) == 0))
{
if((dpro_cookie == NULL) &&
(am_web_is_url_enforced(request_url, pathInfo_hdr,
clientIP, agent_config) == B_TRUE))
{
// Set original method to GET
orig_req = strdup(REQUEST_METHOD_GET);
if (orig_req != NULL) {
am_web_log_debug("%s: Request method set to GET.",
thisfunc);
} else {
am_web_log_error("%s: Not enough memory to ",
"allocate orig_req.", thisfunc);
status = AM_NO_MEMORY;
}
// Check if dpro_cookie is in post data
if( status == AM_SUCCESS) {
response = get_post_assertion_data(sn, rq, request_url);
status = am_web_check_cookie_in_post(args, &dpro_cookie,
&request_url,
&orig_req, method, response,
B_FALSE, set_cookie,
set_method, agent_config);
if( status == AM_SUCCESS) {
am_web_log_debug("%s: SSO token found in "
"assertion.",thisfunc);
} else {
am_web_log_debug("%s: SSO token not found in "
"assertion. Redirecting to login page.",
thisfunc);
status = AM_INVALID_SESSION;
}
}
// Set back the original clf-request attribute
if (status == AM_SUCCESS) {
int clf_reqSize = 0;
if ((query != NULL) && (strlen(query) > 0)) {
clf_reqSize = strlen(orig_req) + strlen(uri_hdr) +
strlen (query) + strlen(protocol) + 4;
} else {
clf_reqSize = strlen(orig_req) + strlen(uri_hdr) +
strlen(protocol) + 3;
}
clf_req = malloc(clf_reqSize);
if (clf_req == NULL) {
am_web_log_error("%s: Unable to allocate %i "
"bytes for clf_req",
thisfunc, clf_reqSize);
status = AM_NO_MEMORY;
} else {
memset (clf_req,'\0',clf_reqSize);
strcpy(clf_req, orig_req);
strcat(clf_req, " ");
strcat(clf_req, uri_hdr);
if ((query != NULL) && (strlen(query) > 0)) {
strcat(clf_req, "?");
strcat(clf_req, query);
}
strcat(clf_req, " ");
strcat(clf_req, protocol);
am_web_log_debug("%s: clf-request set to %s",
thisfunc, clf_req);
}
pblock_nvinsert(REQUEST_CLF, clf_req, rq->reqpb);
}
}
}
}
// Check if access is allowed.
if( status == AM_SUCCESS) {
if (dpro_cookie != NULL) {
am_web_log_debug("%s: SSO token = %s", thisfunc, dpro_cookie);
} else {
am_web_log_debug("%s: SSO token not found.", thisfunc);
}
status = am_web_is_access_allowed(dpro_cookie,
request_url,
pathInfo_hdr, method,
clientIP,
env_parameter_map,
&result,
agent_config);
am_map_destroy(env_parameter_map);
}
switch(status) {
case AM_SUCCESS:
// Set remote user and authentication type
ruser = result.remote_user;
if (ruser != NULL) {
pb_param *pbuser = pblock_remove(AUTH_USER_VAR, rq->vars);
pb_param *pbauth = pblock_remove(AUTH_TYPE_VAR, rq->vars);
if (pbuser != NULL) {
param_free(pbuser);
}
pblock_nvinsert(AUTH_USER_VAR, ruser, rq->vars);
if (pbauth != NULL) {
param_free(pbauth);
}
pblock_nvinsert(AUTH_TYPE_VAR, AM_WEB_AUTH_TYPE_VALUE, rq->vars);
am_web_log_debug("%s: access allowed to %s", thisfunc, ruser);
} else {
am_web_log_debug("%s: Remote user not set, "
"allowing access to the url as it is in not "
"enforced list", thisfunc);
}
if (am_web_is_logout_url(request_url, agent_config) == B_TRUE) {
(void)am_web_logout_cookies_reset(reset_cookie, args, agent_config);
}
// set LDAP user attributes to http header
status = am_web_result_attr_map_set(&result, set_header,
set_cookie_in_response,
set_header_attr_as_cookie,
get_cookie_sync, args, agent_config);
if (status != AM_SUCCESS) {
am_web_log_error("%s: am_web_result_attr_map_set failed, "
"status = %s (%d)", thisfunc,
am_status_to_string(status), status);
requestResult = REQ_ABORTED;
} else {
requestResult = REQ_PROCEED;
}
break;
case AM_ACCESS_DENIED:
am_web_log_debug("%s: Access denied to %s", thisfunc,
result.remote_user ? result.remote_user :
"******");
requestResult = do_redirect(sn, rq, status, &result,
request_url, method, agent_config);
break;
case AM_INVALID_SESSION:
if (am_web_is_cdsso_enabled(agent_config) == B_TRUE) {
cdStatus = am_web_do_cookie_domain_set(set_cookie, args,
EMPTY_STRING,
agent_config);
if(cdStatus != AM_SUCCESS) {
am_web_log_error("%s: CDSSO reset cookie failed", thisfunc);
}
}
am_web_do_cookies_reset(reset_cookie, args, agent_config);
requestResult = do_redirect(sn, rq, status, &result,
request_url, method,
agent_config);
break;
case AM_INVALID_FQDN_ACCESS:
// Redirect to self with correct FQDN - no post preservation
requestResult = do_redirect(sn, rq, status, &result,
request_url, method, agent_config);
break;
case AM_REDIRECT_LOGOUT:
status = am_web_get_logout_url(&logout_url, agent_config);
if(status == AM_SUCCESS)
{
do_url_redirect(sn,rq,logout_url);
}
else
{
requestResult = REQ_ABORTED;
am_web_log_debug("validate_session_policy(): "
"am_web_get_logout_url failed. ");
}
break;
case AM_INVALID_ARGUMENT:
case AM_NO_MEMORY:
default:
am_web_log_error("validate_session_policy() Status: %s (%d)",
am_status_to_string(status), status);
requestResult = REQ_ABORTED;
break;
}
// Cleaning
am_web_clear_attributes_map(&result);
am_policy_result_destroy(&result);
am_web_free_memory(dpro_cookie);
am_web_free_memory(request_url);
am_web_free_memory(logout_url);
am_web_delete_agent_configuration(agent_config);
if (orig_req != NULL) {
free(orig_req);
orig_req = NULL;
}
if (response != NULL) {
free(response);
response = NULL;
}
if (clf_req != NULL) {
free(clf_req);
clf_req = NULL;
}
if(query != NULL) {
free(query);
query = NULL;
}
if(method != NULL) {
free(method);
method = NULL;
}
if(clientIP != NULL) {
am_web_free_memory(clientIP);
}
if(clientHostname != NULL) {
am_web_free_memory(clientHostname);
}
am_web_log_max_debug("%s: Completed handling request with status: %s.",
thisfunc, am_status_to_string(status));
return requestResult;
}
