X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fsession.c;h=131d80c173fa6ae16d9a661a5d189df5913d3e11;hb=acdf592fee6d7f1970e42e31c23c2a88196051aa;hp=3494dadb38d157d2032eb594b93b461497751d7c;hpb=a644a48c2dfdc4ba5129aa3b85a21aadc429f65d;p=src%2Fapp-framework-binder.git

diff --git a/src/session.c b/src/session.c
index 3494dadb..131d80c1 100644
--- a/src/session.c
+++ b/src/session.c
@@ -14,10 +14,10 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- * 
- * Reference: 
- * https://github.com/json-c/json-c/blob/master/linkhash.c
- * https://github.com/json-c/json-c/blob/master/linkhash.h
+ *
+ * Reference:
+ * http://stackoverflow.com/questions/25971505/how-to-delete-element-from-hsearch
+ *
  */
 
 
@@ -27,55 +27,360 @@
 #include <time.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <pthread.h>
+#include <search.h>
 
-#define AFB_SESSION_JTYPE "AFB_session"
-#define AFB_SESSION_JLIST "AFB_sessions"
-#define AFB_SESSION_JINFO "AFB_infos"
 
+// Session UUID are store in a simple array [for 10 sessions this should be enough]
+static struct {
+  pthread_mutex_t mutex;          // declare a mutex to protect hash table
+  AFB_clientCtx **store;          // sessions store
+  int count;                      // current number of sessions
+  int max;
+} sessions;
 
-#define AFB_CURRENT_SESSION "active-session"  // file link name within sndcard dir
-#define AFB_DEFAULT_SESSION "current-session" // should be in sync with UI
+static const char key_uuid[] = "uuid";
+static const char key_token[] = "token";
 
+// Free context [XXXX Should be protected again memory abort XXXX]
+static void ctxUuidFreeCB (AFB_clientCtx *client)
+{
 
-static struct lh_table *clientCtxs=NULL;    // let's use JsonObject Hashtable to Store Sessions
+    AFB_plugin **plugins = client->plugins;
+    AFB_freeCtxCB freeCtxCB;
+    int idx;
 
+    // If application add a handle let's free it now
+    if (client->contexts != NULL) {
 
-// verify we can read/write in session dir
-PUBLIC AFB_error sessionCheckdir (AFB_session *session) {
+        // Free client handle with a standard Free function, with app callback or ignore it
+        for (idx=0; client->plugins[idx] != NULL; idx ++) {
+            if (client->contexts[idx] != NULL) {
+                freeCtxCB = client->plugins[idx]->freeCtxCB;
+                if (freeCtxCB == NULL)
+			free (client->contexts[idx]);
+                else if (freeCtxCB != (void*)-1)
+			freeCtxCB(client->contexts[idx], plugins[idx]->handle, client->uuid);
+            }
+        }
+    }
+}
 
-   int err;
+// Create a new store in RAM, not that is too small it will be automatically extended
+void ctxStoreInit (int nbSession)
+{
 
-   // in case session dir would not exist create one
-   if (verbose) fprintf (stderr, "AFB:notice checking session dir [%s]\n", session->config->sessiondir);
-   mkdir(session->config->sessiondir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
+   // let's create as store as hashtable does not have any
+   sessions.store = calloc (1 + (unsigned)nbSession, sizeof(AFB_clientCtx));
+   sessions.max = nbSession;
+}
 
-   // change for session directory
-   err = chdir(session->config->sessiondir);
-   if (err) {
-     fprintf(stderr,"AFB: Fail to chdir to %s error=%s\n", session->config->sessiondir, strerror(err));
-     return err;
-   }
+static AFB_clientCtx *ctxStoreSearch (const char* uuid)
+{
+    int  idx;
+    AFB_clientCtx *client;
 
-   // verify we can write session in directory
-   json_object *dummy= json_object_new_object();
-   json_object_object_add (dummy, "checked"  , json_object_new_int (getppid()));
-   err = json_object_to_file ("./AFB-probe.json", dummy);
-   if (err < 0) return err;
+    if (uuid == NULL)
+	return NULL;
 
-   return AFB_SUCCESS;
+    pthread_mutex_lock(&sessions.mutex);
+
+    for (idx=0; idx < sessions.max; idx++) {
+        if (sessions.store[idx] && (0 == strcmp (uuid, sessions.store[idx]->uuid))) break;
+    }
+
+    if (idx == sessions.max) client=NULL;
+    else client= sessions.store[idx];
+    pthread_mutex_unlock(&sessions.mutex);
+
+    return client;
+}
+
+static AFB_error ctxStoreDel (AFB_clientCtx *client)
+{
+    int idx;
+    int status;
+
+    if (client == NULL)
+	return AFB_FAIL;
+
+    pthread_mutex_lock(&sessions.mutex);
+
+    for (idx=0; idx < sessions.max; idx++) {
+        if (sessions.store[idx] && (0 == strcmp (client->uuid, sessions.store[idx]->uuid))) break;
+    }
+
+    if (idx == sessions.max)
+	status = AFB_FAIL;
+    else {
+        sessions.count--;
+        ctxUuidFreeCB (sessions.store[idx]);
+        sessions.store[idx]=NULL;
+        status = AFB_SUCCESS;
+    }
+
+    pthread_mutex_unlock(&sessions.mutex);
+    return status;
+}
+
+static AFB_error ctxStoreAdd (AFB_clientCtx *client)
+{
+    int idx;
+    int status;
+    if (client == NULL)
+	return AFB_FAIL;
+
+    //fprintf (stderr, "ctxStoreAdd request uuid=%s count=%d\n", client->uuid, sessions.count);
+
+    pthread_mutex_lock(&sessions.mutex);
+
+    for (idx=0; idx < sessions.max; idx++) {
+        if (NULL == sessions.store[idx]) break;
+    }
+
+    if (idx == sessions.max) status=AFB_FAIL;
+    else {
+        status=AFB_SUCCESS;
+        sessions.count ++;
+        sessions.store[idx]= client;
+    }
+
+    pthread_mutex_unlock(&sessions.mutex);
+    return status;
 }
 
-// let's return only sessions files
-STATIC int fileSelect (const struct dirent *entry) {
+// Check if context timeout or not
+static int ctxStoreToOld (AFB_clientCtx *ctx, int timeout)
+{
+    int res;
+    time_t now =  time(NULL);
+    res = (ctx->timeStamp + timeout) <= now;
+    return res;
+}
+
+// Loop on every entry and remove old context sessions.hash
+void ctxStoreGarbage (const int timeout)
+{
+    AFB_clientCtx *ctx;
+    long idx;
+
+    // Loop on Sessions Table and remove anything that is older than timeout
+    for (idx=0; idx < sessions.max; idx++) {
+        ctx=sessions.store[idx];
+        if ((ctx != NULL) && (ctxStoreToOld(ctx, timeout))) {
+            ctxStoreDel (ctx);
+        }
+    }
+}
+
+// This function will return exiting client context or newly created client context
+AFB_clientCtx *ctxClientGet (AFB_request *request, int idx)
+{
+  AFB_clientCtx *clientCtx=NULL;
+  const char *uuid;
+  uuid_t newuuid;
+
+    if (request->config->token == NULL) return NULL;
+
+    // Check if client as a context or not inside the URL
+    uuid  = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, key_uuid);
+
+    // if UUID in query we're restfull with no cookies otherwise check for cookie
+    if (uuid != NULL)
+        request->restfull = TRUE;
+    else {
+        char cookie[64];
+        request->restfull = FALSE;
+        snprintf(cookie, sizeof cookie, "%s-%d", COOKIE_NAME, request->config->httpdPort);
+        uuid = MHD_lookup_connection_value (request->connection, MHD_COOKIE_KIND, cookie);
+    };
+
+    // Warning when no cookie defined MHD_lookup_connection_value may return something !!!
+    if ((uuid != NULL) && (strnlen (uuid, 10) >= 10))   {
+        // search if client context exist and it not timeout let's use it
+        clientCtx = ctxStoreSearch (uuid);
+
+	if (clientCtx) {
+            if (ctxStoreToOld (clientCtx, request->config->cntxTimeout)) {
+                 // this session is too old let's delete it
+                ctxStoreDel (clientCtx);
+                clientCtx = NULL;
+            } else {
+                request->context=clientCtx->contexts[idx];
+                request->handle  = clientCtx->plugins[idx]->handle;
+                request->uuid= uuid;
+                return clientCtx;
+            }
+        }
+    }
+
+    // we have no session let's create one otherwise let's clean any exiting values
+    if (clientCtx == NULL) {
+        clientCtx = calloc(1, sizeof(AFB_clientCtx)); // init NULL clientContext
+        clientCtx->contexts = calloc (1, (unsigned)request->config->pluginCount * (sizeof (void*)));
+        clientCtx->plugins  = request->plugins;
+    }
+
+    uuid_generate(newuuid);         // create a new UUID
+    uuid_unparse_lower(newuuid, clientCtx->uuid);
+
+    // if table is full at 50% let's clean it up
+    if(sessions.count > (sessions.max / 2)) ctxStoreGarbage(request->config->cntxTimeout);
+
+    // finally add uuid into hashtable
+    if (AFB_SUCCESS != ctxStoreAdd (clientCtx)) {
+        free (clientCtx);
+        return NULL;
+    }
+
+    // if (verbose) fprintf (stderr, "ctxClientGet New uuid=[%s] token=[%s] timestamp=%d\n", clientCtx->uuid, clientCtx->token, clientCtx->timeStamp);
+    request->context = clientCtx->contexts[idx];
+    request->handle  = clientCtx->plugins[idx]->handle;
+    request->uuid=clientCtx->uuid;
+    return clientCtx;
+}
+
+// Sample Generic Ping Debug API
+AFB_error ctxTokenCheck (AFB_clientCtx *clientCtx, AFB_request *request)
+{
+    const char *token;
+
+    if (clientCtx->contexts == NULL)
+	return AFB_EMPTY;
+
+    // this time have to extract token from query list
+    token = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, key_token);
+
+    // if not token is providing we refuse the exchange
+    if ((token == NULL) || (clientCtx->token == NULL))
+	return AFB_FALSE;
+
+    // compare current token with previous one
+    if ((0 == strcmp (token, clientCtx->token)) && (!ctxStoreToOld (clientCtx, request->config->cntxTimeout))) {
+       return AFB_SUCCESS;
+    }
+
+    // Token is not valid let move level of assurance to zero and free attached client handle
+    return AFB_FAIL;
+}
+
+// Free Client Session Context
+AFB_error ctxTokenReset (AFB_clientCtx *clientCtx, AFB_request *request)
+{
+    if (clientCtx == NULL)
+       return AFB_EMPTY;
+    //if (verbose) fprintf (stderr, "ctxClientReset New uuid=[%s] token=[%s] timestamp=%d\n", clientCtx->uuid, clientCtx->token, clientCtx->timeStamp);
+
+    // Search for an existing client with the same UUID
+    clientCtx = ctxStoreSearch (clientCtx->uuid);
+    if (clientCtx == NULL)
+       return AFB_FALSE;
+
+    // Remove client from table
+    ctxStoreDel (clientCtx);
+
+    return AFB_SUCCESS;
+}
+
+// generate a new token
+AFB_error ctxTokenCreate (AFB_clientCtx *clientCtx, AFB_request *request)
+{
+    uuid_t newuuid;
+    const char *token;
+
+    if (clientCtx == NULL)
+       return AFB_EMPTY;
+
+    // if config->token!="" then verify that we have the right initial share secret
+    if (request->config->token[0] != '\0') {
+
+        // check for initial token secret and return if not presented
+        token = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, key_token);
+        if (token == NULL)
+           return AFB_UNAUTH;
+
+        // verify that it fits with initial tokens fit
+        if (strcmp(request->config->token, token))
+           return AFB_UNAUTH;
+    }
+
+    // create a UUID as token value
+    uuid_generate(newuuid);
+    uuid_unparse_lower(newuuid, clientCtx->token);
+
+    // keep track of time for session timeout and further clean up
+    clientCtx->timeStamp=time(NULL);
+
+    // Token is also store in context but it might be convenient for plugin to access it directly
+    return AFB_SUCCESS;
+}
+
+
+// generate a new token and update client context
+AFB_error ctxTokenRefresh (AFB_clientCtx *clientCtx, AFB_request *request)
+{
+    uuid_t newuuid;
+
+    if (clientCtx == NULL)
+        return AFB_EMPTY;
+
+    // Check if the old token is valid
+    if (ctxTokenCheck (clientCtx, request) != AFB_SUCCESS)
+        return AFB_FAIL;
+
+    // Old token was valid let's regenerate a new one
+    uuid_generate(newuuid);         // create a new UUID
+    uuid_unparse_lower(newuuid, clientCtx->token);
+
+    // keep track of time for session timeout and further clean up
+    clientCtx->timeStamp=time(NULL);
+
+    return AFB_SUCCESS;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#if defined(ALLOWS_SESSION_FILES)
+
+#define AFB_SESSION_JTYPE "AFB_session"
+#define AFB_SESSION_JLIST "AFB_sessions.hash"
+#define AFB_SESSION_JINFO "AFB_infos"
+
+
+#define AFB_CURRENT_SESSION "active-session"  // file link name within sndcard dir
+#define AFB_DEFAULT_SESSION "current-session" // should be in sync with UI
+
+// let's return only sessions.hash files
+static int fileSelect (const struct dirent *entry) {
    return (strstr (entry->d_name, ".afb") != NULL);
 }
 
-STATIC  json_object *checkCardDirExit (AFB_session *session, AFB_request *request ) {
+static  json_object *checkCardDirExit (AFB_session *session, AFB_request *request ) {
     int  sessionDir, cardDir;
 
     // card name should be more than 3 character long !!!!
-    if (strlen (request->plugin) < 3) {
-       return (jsonNewMessage (AFB_FAIL,"Fail invalid plugin=%s", request->plugin));
+    if (strlen (request->prefix) < 3) {
+       return (jsonNewMessage (AFB_FAIL,"Fail invalid plugin=%s", request->prefix));
     }
 
     // open session directory
@@ -85,25 +390,67 @@ STATIC  json_object *checkCardDirExit (AFB_session *session, AFB_request *reques
     }
 
    // create session sndcard directory if it does not exit
-    cardDir = openat (sessionDir, request->plugin,  O_DIRECTORY);
+    cardDir = openat (sessionDir, request->prefix,  O_DIRECTORY);
     if (cardDir < 0) {
-          cardDir  = mkdirat (sessionDir, request->plugin, O_RDWR | S_IRWXU | S_IRGRP);
+          cardDir  = mkdirat (sessionDir, request->prefix, O_RDWR | S_IRWXU | S_IRGRP);
           if (cardDir < 0) {
-              return (jsonNewMessage (AFB_FAIL,"Fail to create directory [%s/%s] error=%s", session->config->sessiondir, request->plugin, strerror(cardDir)));
+              return (jsonNewMessage (AFB_FAIL,"Fail to create directory [%s/%s] error=%s", session->config->sessiondir, request->prefix, strerror(cardDir)));
           }
     }
     close (sessionDir);
     return NULL;
 }
 
+// Create a link toward last used sessionname within sndcard directory
+static void makeSessionLink (const char *cardname, const char *sessionname) {
+   char linkname [256], filename [256];
+   int err;
+   // create a link to keep track of last uploaded sessionname for this card
+   strncpy (filename, sessionname, sizeof(filename));
+   strncat (filename, ".afb", sizeof(filename));
+
+   strncpy (linkname, cardname, sizeof(linkname));
+   strncat (linkname, "/", sizeof(filename));
+   strncat (linkname, AFB_CURRENT_SESSION, sizeof(linkname));
+   strncat (linkname, ".afb", sizeof(filename));
+   unlink (linkname); // remove previous link if any
+   err = symlink (filename, linkname);
+   if (err < 0) fprintf (stderr, "Fail to create link %s->%s error=%s\n", linkname, filename, strerror(errno));
+}
+
+// verify we can read/write in session dir
+AFB_error sessionCheckdir (AFB_session *session) {
+
+   int err;
+
+   // in case session dir would not exist create one
+   if (verbose) fprintf (stderr, "AFB:notice checking session dir [%s]\n", session->config->sessiondir);
+   mkdir(session->config->sessiondir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
+
+   // change for session directory
+   err = chdir(session->config->sessiondir);
+   if (err) {
+     fprintf(stderr,"AFB: Fail to chdir to %s error=%s\n", session->config->sessiondir, strerror(err));
+     return err;
+   }
+
+   // verify we can write session in directory
+   json_object *dummy= json_object_new_object();
+   json_object_object_add (dummy, "checked"  , json_object_new_int (getppid()));
+   err = json_object_to_file ("./AFB-probe.json", dummy);
+   if (err < 0) return err;
+
+   return AFB_SUCCESS;
+}
+
 // create a session in current directory
-PUBLIC json_object *sessionList (AFB_session *session, AFB_request *request) {
+json_object *sessionList (AFB_session *session, AFB_request *request) {
     json_object *sessionsJ, *ajgResponse;
     struct stat fstat;
     struct dirent **namelist;
     int  count, sessionDir;
 
-    // if directory for card's sessions does not exist create it
+    // if directory for card's sessions.hash does not exist create it
     ajgResponse = checkCardDirExit (session, request);
     if (ajgResponse != NULL) return ajgResponse;
 
@@ -113,13 +460,13 @@ PUBLIC json_object *sessionList (AFB_session *session, AFB_request *request) {
           return (jsonNewMessage (AFB_FAIL,"Fail to open directory [%s] error=%s", session->config->sessiondir, strerror(sessionDir)));
     }
 
-    count = scandirat (sessionDir, request->plugin, &namelist, fileSelect, alphasort);
+    count = scandirat (sessionDir, request->prefix, &namelist, fileSelect, alphasort);
     close (sessionDir);
 
     if (count < 0) {
-        return (jsonNewMessage (AFB_FAIL,"Fail to scan sessions directory [%s/%s] error=%s", session->config->sessiondir, request->plugin, strerror(sessionDir)));
+        return (jsonNewMessage (AFB_FAIL,"Fail to scan sessions.hash directory [%s/%s] error=%s", session->config->sessiondir, request->prefix, strerror(sessionDir)));
     }
-    if (count == 0) return (jsonNewMessage (AFB_EMPTY,"[%s] no session at [%s]", request->plugin, session->config->sessiondir));
+    if (count == 0) return (jsonNewMessage (AFB_EMPTY,"[%s] no session at [%s]", request->prefix, session->config->sessiondir));
 
     // loop on each session file, retrieve its date and push it into json response object
     sessionsJ = json_object_new_array();
@@ -156,25 +503,8 @@ PUBLIC json_object *sessionList (AFB_session *session, AFB_request *request) {
     return (ajgResponse);
 }
 
-// Create a link toward last used sessionname within sndcard directory
-STATIC void makeSessionLink (const char *cardname, const char *sessionname) {
-   char linkname [256], filename [256];
-   int err;
-   // create a link to keep track of last uploaded sessionname for this card
-   strncpy (filename, sessionname, sizeof(filename));
-   strncat (filename, ".afb", sizeof(filename));
-
-   strncpy (linkname, cardname, sizeof(linkname));
-   strncat (linkname, "/", sizeof(filename));
-   strncat (linkname, AFB_CURRENT_SESSION, sizeof(linkname));
-   strncat (linkname, ".afb", sizeof(filename));
-   unlink (linkname); // remove previous link if any
-   err = symlink (filename, linkname);
-   if (err < 0) fprintf (stderr, "Fail to create link %s->%s error=%s\n", linkname, filename, strerror(errno));
-}
-
 // Load Json session object from disk
-PUBLIC json_object *sessionFromDisk (AFB_session *session, AFB_request *request, char *name) {
+json_object *sessionFromDisk (AFB_session *session, AFB_request *request, char *name) {
     json_object *jsonSession, *jtype, *response;
     const char *ajglabel;
     char filename [256];
@@ -187,12 +517,12 @@ PUBLIC json_object *sessionFromDisk (AFB_session *session, AFB_request *request,
     // check for current session request
     defsession = (strcmp (name, AFB_DEFAULT_SESSION) ==0);
 
-    // if directory for card's sessions does not exist create it
+    // if directory for card's sessions.hash does not exist create it
     response = checkCardDirExit (session, request);
     if (response != NULL) return response;
 
     // add name and file extension to session name
-    strncpy (filename, request->plugin, sizeof(filename));
+    strncpy (filename, request->prefix, sizeof(filename));
     strncat (filename, "/", sizeof(filename));
     if (defsession) strncat (filename, AFB_CURRENT_SESSION, sizeof(filename)-1);
     else strncat (filename, name, sizeof(filename)-1);
@@ -217,13 +547,13 @@ PUBLIC json_object *sessionFromDisk (AFB_session *session, AFB_request *request,
     }
 
     // create a link to keep track of last uploaded session for this card
-    if (!defsession) makeSessionLink (request->plugin, name);
+    if (!defsession) makeSessionLink (request->prefix, name);
 
     return (jsonSession);
 }
 
 // push Json session object to disk
-PUBLIC json_object * sessionToDisk (AFB_session *session, AFB_request *request, char *name, json_object *jsonSession) {
+json_object * sessionToDisk (AFB_session *session, AFB_request *request, char *name, json_object *jsonSession) {
    char filename [256];
    time_t rawtime;
    struct tm * timeinfo;
@@ -236,12 +566,12 @@ PUBLIC json_object * sessionToDisk (AFB_session *session, AFB_request *request,
    // check for current session request
    defsession = (strcmp (name, AFB_DEFAULT_SESSION) ==0);
 
-   // if directory for card's sessions does not exist create it
+   // if directory for card's sessions.hash does not exist create it
    response = checkCardDirExit (session, request);
    if (response != NULL) return response;
 
    // add cardname and file extension to session name
-   strncpy (filename, request->plugin, sizeof(filename));
+   strncpy (filename, request->prefix, sizeof(filename));
    strncat (filename, "/", sizeof(filename));
    if (defsession) strncat (filename, AFB_CURRENT_SESSION, sizeof(filename)-1);
    else strncat (filename, name, sizeof(filename)-1);
@@ -264,13 +594,13 @@ PUBLIC json_object * sessionToDisk (AFB_session *session, AFB_request *request,
        // extract session info from args
        info = json_tokener_parse (request->post->data);
        if (!info) {
-            response = jsonNewMessage (AFB_FATAL,"sndcard=%s session=%s invalid json args=%s", request->plugin, name, request->post);
+            response = jsonNewMessage (AFB_FATAL,"sndcard=%s session=%s invalid json args=%s", request->prefix, name, request->post);
             goto OnErrorExit;
        }
 
        // info is a valid AFB_info type
        if (!json_object_object_get_ex (info, "jtype", &jtype)) {
-            response = jsonNewMessage (AFB_EMPTY,"sndcard=%s session=%s No 'AFB_pluginT' args=%s", request->plugin, name, request->post);
+            response = jsonNewMessage (AFB_EMPTY,"sndcard=%s session=%s No 'AFB_pluginT' args=%s", request->prefix, name, request->post);
             goto OnErrorExit;
        }
 
@@ -295,7 +625,7 @@ PUBLIC json_object * sessionToDisk (AFB_session *session, AFB_request *request,
 
 
    // create a link to keep track of last uploaded session for this card
-   if (!defsession) makeSessionLink (request->plugin, name);
+   if (!defsession) makeSessionLink (request->prefix, name);
 
    // we're donne let's return status message
    response = jsonNewMessage (AFB_SUCCESS,"Session= [%s] saved on disk", filename);
@@ -306,225 +636,5 @@ OnErrorExit:
    json_object_put (jsonSession);
    return response;
 }
-
-
-// Function to handle Cookies and Client session context it relies on json low level
-// linked list functionalities https://github.com/json-c/json-c/blob/master/linkhash.c
-
-// Hash client UUID before storing in table
-STATIC unsigned long ctxUuidHashCB (const void *k1) {
-    unsigned long hash;
-    
-    AFB_clientCtx *ctx = (AFB_clientCtx*) k1;
-    hash = lh_char_hash(ctx->uuid);
-    return (hash);    
-}
-
-// Compare client UUIDs within table
-STATIC int ctxUuidCompCB (const void *k1, const void *k2) {
-    int res;    
-    AFB_clientCtx *ctx1 = (AFB_clientCtx*) k1;
-    AFB_clientCtx *ctx2 = (AFB_clientCtx*) k2;
-    
-    res = lh_char_equal(ctx1->uuid, ctx2->uuid);
-    return (res);    
-}
-
-// Free context [XXXX Should be protected again memory abort XXXX]
-STATIC void ctxUuidFreeCB (struct lh_entry *entry) {
-    AFB_clientCtx *client = (AFB_clientCtx*) entry->v;
-
-    // If application add a handle let's free it now
-    if (client->ctx != NULL) {
-        
-        // Free client handle with a standard Free function, with app callback or ignore it
-        if (client->plugin->freeCtxCB == NULL) free (client->ctx); 
-        else if (client->plugin->freeCtxCB != (void*)-1) client->plugin->freeCtxCB(client); 
-    }
-    free ((void*)entry->v);
-}
-
-// Create a new store in RAM, not that is too small it will be automatically extended
-STATIC struct lh_table *ctxStoreCreate (int nbSession) {
-   lh_table *table; 
-    
-   // function will exit process in case of error !!! 
-   table=lh_table_new (nbSession, "CtxClient", ctxUuidFreeCB, ctxUuidHashCB, ctxUuidCompCB);
-   return (table);
-}
-
-// Check if context timeout or not
-STATIC int ctxStoreToOld (const void *k1, int timeout) {
-    int res;    
-    AFB_clientCtx *ctx = (AFB_clientCtx*) k1;
-
-    res = ((ctx->timeStamp + timeout) < time(NULL));
-    return (res);    
-}
-
-// Loop on every entry and remove old context sessions
-PUBLIC int ctxStoreGarbage (struct lh_table *lht, const int timeout) {
-    struct lh_entry *c;
-    
-    // Loop on every entry within table
-    for(c = lht->head; c != NULL; c = c->next) {
-        if(lht->free_fn) {
-            if(c->k == LH_EMPTY) return lht->count;
-            if(c->k != LH_FREED &&  ctxStoreToOld(c->v, timeout)) lh_table_delete_entry (lht, c);
-	}
-    }
-  
-    // return current size after cleanup
-    return (lht->count);
-}
-
-// This function will return exiting client context or newly created client context
-PUBLIC AFB_error ctxClientGet (AFB_request *request, AFB_plugin *plugin) {
-  static int cid=0;
-  AFB_clientCtx *clientCtx=NULL;
-  const char *uuid;
-  uuid_t newuuid;
-  int ret;
-  
-    if (request->config->token == NULL) return AFB_EMPTY;
-  
-    // if client session store is null create it
-    if (clientCtxs == NULL) {
-       clientCtxs= ctxStoreCreate(CTX_NBCLIENTS);
-    }
-
-    // Check if client as a context or not inside the URL
-    uuid  = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, "uuid");
-       
-    // if UUID in query we're restfull with no cookies otherwise check for cookie
-    if (uuid != NULL) request->restfull = TRUE;
-    else {
-        request->restfull = FALSE;
-        uuid = MHD_lookup_connection_value (request->connection, MHD_COOKIE_KIND, COOKIE_NAME);  
-    };
-    
-    
-    if (uuid != NULL)   {
-        // search if client context exist and it not timeout let's use it
-	if ((lh_table_lookup_ex (clientCtxs, uuid, (void**) &clientCtx)) 
-                && ! ctxStoreToOld (clientCtx, request->config->cntxTimeout)) {
-                request->client=clientCtx;
-                if (verbose) fprintf (stderr, "ctxClientGet Old uuid=[%s] token=[%s] timestamp=%d\n"
-                             ,request->client->uuid, request->client->token, request->client->timeStamp);
-                return;            
-        }
-    }
-
-    
-    // we have no session let's create one otherwise let's clean any exiting values
-    if (clientCtx == NULL) clientCtx = calloc(1, sizeof(AFB_clientCtx)); // init NULL clientContext
-    uuid_generate(newuuid);         // create a new UUID
-    uuid_unparse_lower(newuuid, clientCtx->uuid);
-    clientCtx->cid=cid++;   // simple application uniqueID 
-    clientCtx->plugin = plugin;    // provide plugin callbacks a hook to plugin
-        
-    // if table is full at 50% let's clean it up
-    if(clientCtxs->count > (clientCtxs->size*0.5)) ctxStoreGarbage(clientCtxs, request->config->cntxTimeout);
-    
-    // finally add uuid into hashtable
-    ret=lh_table_insert (clientCtxs, (void*)clientCtx->uuid, clientCtx);
-    if (ret < 0) return (AFB_FAIL);
-    
-    if (verbose) fprintf (stderr, "ctxClientGet New uuid=[%s] token=[%s] timestamp=%d\n", clientCtx->uuid, clientCtx->token, clientCtx->timeStamp);      
-    request->client = clientCtx;
-
-    return (AFB_SUCCESS);
-}
-
-// Sample Generic Ping Debug API
-PUBLIC AFB_error ctxTokenCheck (AFB_request *request) {
-    const char *token;
-    
-    if (request->client == NULL) return AFB_EMPTY;
-    
-    // this time have to extract token from query list
-    token = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, "token");
-    
-    // if not token is providing we refuse the exchange
-    if ((token == NULL) || (request->client->token == NULL)) return (AFB_FALSE);
-    
-    // compare current token with previous one
-    if ((0 == strcmp (token, request->client->token)) && (!ctxStoreToOld (request->client, request->config->cntxTimeout))) {
-       return (AFB_SUCCESS);
-    }
-    
-    // Token is not valid let move level of assurance to zero and free attached client handle
-    return (AFB_FAIL);
-}
-
-// Free Client Session Context
-PUBLIC AFB_error ctxTokenReset (AFB_request *request) {
-    struct lh_entry* entry;
-    int ret;
-
-    if (request->client == NULL) return AFB_EMPTY;
-
-    entry = lh_table_lookup_entry (clientCtxs, request->client->uuid);
-    if (entry == NULL) return AFB_FALSE;
-    
-    lh_table_delete_entry (clientCtxs, entry);
- 
-    return (AFB_SUCCESS);
-}
-
-// generate a new token
-PUBLIC AFB_error ctxTokenCreate (AFB_request *request) {
-    int oldTnkValid;
-    const char *ornew;
-    uuid_t newuuid;
-    const char *token;
-
-    if (request->client == NULL) return AFB_EMPTY;
-
-    // if config->token!="" then verify that we have the right initial share secret   
-    if (request->config->token[0] != '\0') {
-        
-        // check for initial token secret and return if not presented
-        token = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, "token");
-        if (token == NULL) return AFB_UNAUTH;
-        
-        // verify that presented initial tokens fit
-        if (strcmp(request->config->token, token)) return AFB_UNAUTH;       
-    }
-    
-
-    // create a UUID as token value
-    uuid_generate(newuuid); 
-    uuid_unparse_lower(newuuid, request->client->token);
-    
-    // keep track of time for session timeout and further clean up
-    request->client->timeStamp=time(NULL); 
-    
-    // Token is also store in context but it might be convenient for plugin to access it directly
-    return (AFB_SUCCESS);
-}
-
-
-// generate a new token and update client context
-PUBLIC AFB_error ctxTokenRefresh (AFB_request *request) {
-    int oldTnkValid;
-    const char *oldornew;
-    uuid_t newuuid;
-
-    if (request->client == NULL) return AFB_EMPTY;
-    
-    // Check if the old token is valid
-    oldTnkValid= ctxTokenCheck (request);
-    
-    // if token is not valid let check for query argument "oldornew"
-    if (!oldTnkValid) {
-        oldornew = MHD_lookup_connection_value(request->connection, MHD_GET_ARGUMENT_KIND, "oldornew");
-        if (oldornew != NULL) oldTnkValid= TRUE;
-    }
-   
-    // No existing token and no request to create one
-    if (oldTnkValid != TRUE) return AFB_WARNING;
-
-    return (ctxTokenCreate (request));
-}
+#endif