afb-session: rewrite of cookie handling

[src/app-framework-binder.git] / src / afb-session.c

diff --git a/src/afb-session.c b/src/afb-session.c
index 536cdbc..77a20fa 100644 (file)
--- a/src/afb-session.c
+++ b/src/afb-session.c
@@ -120,7 +120,7 @@ static void free_data (struct afb_session *session)
 void afb_session_init (int max_session_count, int timeout, const char *initok)
 {
        // let's create as store as hashtable does not have any
-       sessions.store = calloc (1 + (unsigned)max_session_count, sizeof(struct afb_session));
+       sessions.store = calloc (1 + (unsigned)max_session_count, sizeof *sessions.store);
        pthread_mutex_init(&sessions.mutex, NULL);
        sessions.max = max_session_count;
        sessions.timeout = timeout;
@@ -135,6 +135,11 @@ void afb_session_init (int max_session_count, int timeout, const char *initok)
        }
 }
 
+const char *afb_session_initial_token()
+{
+       return sessions.initok;
+}
+
 static struct afb_session *search (const char* uuid)
 {
        int  idx;
@@ -309,6 +314,8 @@ struct afb_session *afb_session_get (const char *uuid, int *created)
        /* search for an existing one not too old */
        if (uuid != NULL) {
                session = search(uuid);
+               if (!created)
+                       return session;
                if (session != NULL) {
                        *created = 0;
                        session->access = now;
@@ -317,7 +324,9 @@ struct afb_session *afb_session_get (const char *uuid, int *created)
                }
        }
 
-       *created = 1;
+       if (created)
+               *created = 1;
+
        return make_session(uuid, sessions.timeout, now);
 }
 
@@ -397,52 +406,47 @@ const char *afb_session_token (struct afb_session *session)
        return session->token;
 }
 
-static struct cookie *cookie_search(struct afb_session *session, const void *key, int *idx)
-{
-       struct cookie *cookie;
-
-       cookie = session->cookies[*idx = cookeyidx(key)];
-       while(cookie != NULL && cookie->key != key)
-               cookie = cookie->next;
-       return cookie;
-}
-
-static struct cookie *cookie_add(struct afb_session *session, int idx, const void *key, void *value, void (*freecb)(void*))
-{
-       struct cookie *cookie;
-
-       cookie = malloc(sizeof *cookie);
-       if (!cookie)
-               errno = ENOMEM;
-       else {
-               cookie->key = key;
-               cookie->value = value;
-               cookie->freecb = freecb;
-               cookie->next = session->cookies[idx];
-               session->cookies[idx] = cookie;
-       }
-       return cookie;
-}
-
-void *afb_session_cookie(struct afb_session *session, const void *key, void *(*makecb)(void), void (*freecb)(void*))
+void *afb_session_cookie(struct afb_session *session, const void *key, void *(*makecb)(void *closure), void (*freecb)(void *item), void *closure, int replace)
 {
        int idx;
        void *value;
        struct cookie *cookie;
 
+       idx = cookeyidx(key);
        lock(session);
-       cookie = cookie_search(session, key, &idx);
-       if (cookie)
-               value = cookie->value;
-       else {
-               value = makecb ? makecb() : NULL;
-               if (makecb || freecb) {
-                       cookie = cookie_add(session, idx, key, value, freecb);
-                       if (!cookie) {
-                               if (makecb && freecb)
-                                       free(value);
-                               value = NULL;
+       cookie = session->cookies[idx];
+       for (;;) {
+               if (!cookie) {
+                       value = makecb ? makecb(closure) : closure;
+                       if (replace || makecb || freecb) {
+                               cookie = malloc(sizeof *cookie);
+                               if (!cookie) {
+                                       errno = ENOMEM;
+                                       if (freecb)
+                                               freecb(value);
+                                       value = NULL;
+                               } else {
+                                       cookie->key = key;
+                                       cookie->value = value;
+                                       cookie->freecb = freecb;
+                                       cookie->next = session->cookies[idx];
+                                       session->cookies[idx] = cookie;
+                               }
+                       }
+                       break;
+               } else if (cookie->key == key) {
+                       if (!replace)
+                               value = cookie->value;
+                       else {
+                               value = makecb ? makecb(closure) : closure;
+                               if (cookie->value != value && cookie->freecb)
+                                       cookie->freecb(cookie->value);
+                               cookie->value = value;
+                               cookie->freecb = freecb;
                        }
+                       break;
+               } else {
+                       cookie = cookie->next;
                }
        }
        unlock(session);
@@ -451,33 +455,11 @@ void *afb_session_cookie(struct afb_session *session, const void *key, void *(*m
 
 void *afb_session_get_cookie(struct afb_session *session, const void *key)
 {
-       int idx;
-       void *value;
-       struct cookie *cookie;
-
-       lock(session);
-       cookie = cookie_search(session, key, &idx);
-       value = cookie ? cookie->value : NULL;
-       unlock(session);
-       return value;
+       return afb_session_cookie(session, key, NULL, NULL, NULL, 0);
 }
 
 int afb_session_set_cookie(struct afb_session *session, const void *key, void *value, void (*freecb)(void*))
 {
-       int idx;
-       struct cookie *cookie;
-
-       lock(session);
-       cookie = cookie_search(session, key, &idx);
-       if (!cookie)
-               cookie = cookie_add(session, idx, key, value, freecb);
-       else {
-               if (cookie->value != value && cookie->freecb)
-                       cookie->freecb(cookie->value);
-               cookie->value = value;
-               cookie->freecb = freecb;
-       }
-       unlock(session);
-       return -!cookie;
+       return -(value != afb_session_cookie(session, key, NULL, freecb, value, 1));
 }