Replace session's value with sessions's cookies

This is a simplifaction with the benefits of
only allocating needed memory and avoiding to
create indexes on apis (path to dynanic?).
Conversely it replaces a direct access with
a linear search.

Change-Id: Ibb130528ad8f23dfd6b420c228f51e181efb2664
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

7 files changed, 11 insertions, 60 deletions

diff --git a/src/afb-apis.c b/src/afb-apis.c
index 5a53d375..9ffffdb3 100644
--- a/src/afb-apis.c
+++ b/src/afb-apis.c
@@ -39,14 +39,6 @@ static struct api_desc *apis_array = NULL;
 static int apis_count = 0;
 
 /**
- * Returns the current count of APIs
- */
-int afb_apis_count()
-{
-	return apis_count;
-}
-
-/**
  * Checks wether 'name' is a valid API name.
  * @return 1 if valid, 0 otherwise
  */
@@ -178,7 +170,7 @@ void afb_apis_call(struct afb_req req, struct afb_context *context, const char *
 		c = strcasecmp(a->name, api);
 		if (c == 0) {
 			/* api found */
-			context->api_index = i;
+			context->api_key = a->api.closure;
 			a->api.call(a->api.closure, req, context, verb);
 			break;
 		}
diff --git a/src/afb-apis.h b/src/afb-apis.h
index 3e90f661..9b060ce8 100644
--- a/src/afb-apis.h
+++ b/src/afb-apis.h
@@ -28,7 +28,6 @@ struct afb_api
 };
 
 
-extern int afb_apis_count();
 extern int afb_apis_is_valid_api_name(const char *name);
 
 extern int afb_apis_add(const char *name, struct afb_api api);
diff --git a/src/afb-context.c b/src/afb-context.c
index eec4ebb0..6eb29f0d 100644
--- a/src/afb-context.c
+++ b/src/afb-context.c
@@ -31,7 +31,7 @@ static void init_context(struct afb_context *context, struct afb_session *sessio
 	/* reset the context for the session */
 	context->session = session;
 	context->flags = 0;
-	context->api_index = -1;
+	context->api_key = NULL;
 	context->loa_in = afb_session_get_LOA(session) & 7;
 
 	/* check the token */
@@ -109,13 +109,15 @@ const char *afb_context_sent_uuid(struct afb_context *context)
 void *afb_context_get(struct afb_context *context)
 {
 	assert(context->session != NULL);
-	return afb_session_get_value(context->session, context->api_index);
+	return afb_session_get_cookie(context->session, context->api_key);
 }
 
 void afb_context_set(struct afb_context *context, void *value, void (*free_value)(void*))
 {
+	int rc;
 	assert(context->session != NULL);
-	return afb_session_set_value(context->session, context->api_index, value, free_value);
+	rc = afb_session_set_cookie(context->session, context->api_key, value, free_value);
+	(void)rc; /* TODO */
 }
 
 void afb_context_close(struct afb_context *context)
diff --git a/src/afb-context.h b/src/afb-context.h
index d65e6ffa..3eb49742 100644
--- a/src/afb-context.h
+++ b/src/afb-context.h
@@ -38,7 +38,7 @@ struct afb_context
 			unsigned loa_changed: 1;
 		};
 	};
-	int api_index;
+	void *api_key;
 };
 
 extern void afb_context_init(struct afb_context *context, struct afb_session *session, const char *token);
diff --git a/src/afb-session.c b/src/afb-session.c
index db81457c..13b9505e 100644
--- a/src/afb-session.c
+++ b/src/afb-session.c
@@ -33,12 +33,6 @@
 
 #define NOW (time(NULL))
 
-struct value
-{
-	void *value;
-	void (*freecb)(void*);
-};
-
 struct cookie
 {
 	struct cookie *next;
@@ -56,7 +50,6 @@ struct afb_session
 	time_t access;
 	char uuid[37];        // long term authentication of remote client
 	char token[37];       // short term authentication of remote client
-	struct value *values;
 	struct cookie *cookies;
 };
 
@@ -67,7 +60,6 @@ static struct {
 	int count;                      // current number of sessions
 	int max;
 	int timeout;
-	int apicount;
 	char initok[37];
 } sessions;
 
@@ -82,16 +74,8 @@ static void new_uuid(char uuid[37])
 // Free context [XXXX Should be protected again memory abort XXXX]
 static void free_data (struct afb_session *session)
 {
-	int idx;
 	struct cookie *cookie;
 
-	// If application add a handle let's free it now
-	assert (session->values != NULL);
-
-	// Free session handle with a standard Free function, with app callback or ignore it
-	for (idx=0; idx < sessions.apicount; idx ++)
-		afb_session_set_value(session, idx, NULL, NULL);
-
 	// free cookies
 	cookie = session->cookies;
 	while (cookie != NULL) {
@@ -104,13 +88,12 @@ static void free_data (struct afb_session *session)
 }
 
 // Create a new store in RAM, not that is too small it will be automatically extended
-void afb_session_init (int max_session_count, int timeout, const char *initok, int context_count)
+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.max = max_session_count;
 	sessions.timeout = timeout;
-	sessions.apicount = context_count;
 	if (initok == NULL)
 		/* without token, a secret is made to forbid creation of sessions */
 		new_uuid(sessions.initok);
@@ -223,12 +206,11 @@ static struct afb_session *make_session (const char *uuid, int timeout, time_t n
 	struct afb_session *session;
 
 	/* allocates a new one */
-	session = calloc(1, sizeof(struct afb_session) + ((unsigned)sessions.apicount * sizeof(*session->values)));
+	session = calloc(1, sizeof(struct afb_session));
 	if (session == NULL) {
 		errno = ENOMEM;
 		goto error;
 	}
-	session->values = (void*)(session + 1);
 
 	/* generate the uuid */
 	if (uuid == NULL) {
@@ -394,26 +376,6 @@ void afb_session_set_LOA (struct afb_session *session, unsigned loa)
 	session->loa = loa;
 }
 
-void *afb_session_get_value(struct afb_session *session, int index)
-{
-	assert(session != NULL);
-	assert(index >= 0);
-	assert(index < sessions.apicount);
-	return session->values[index].value;
-}
-
-void afb_session_set_value(struct afb_session *session, int index, void *value, void (*freecb)(void*))
-{
-	struct value prev;
-	assert(session != NULL);
-	assert(index >= 0);
-	assert(index < sessions.apicount);
-	prev = session->values[index];
-	session->values[index] = (struct value){.value = value, .freecb = freecb};
-	if (prev.value != NULL && prev.value != value && prev.freecb != NULL)
-		prev.freecb(prev.value);
-}
-
 void *afb_session_get_cookie(struct afb_session *session, const void *key)
 {
 	struct cookie *cookie;
diff --git a/src/afb-session.h b/src/afb-session.h
index 7b3a7101..c45a7e23 100644
--- a/src/afb-session.h
+++ b/src/afb-session.h
@@ -17,10 +17,9 @@
 
 #pragma once
 
-struct json_object;
 struct afb_session;
 
-extern void afb_session_init(int max_session_count, int timeout, const char *initok, int context_count);
+extern void afb_session_init(int max_session_count, int timeout, const char *initok);
 
 extern struct afb_session *afb_session_create (const char *uuid, int timeout);
 extern struct afb_session *afb_session_get (const char *uuid, int *created);
@@ -38,9 +37,6 @@ extern const char *afb_session_token(struct afb_session *session);
 extern unsigned afb_session_get_LOA(struct afb_session *session);
 extern void afb_session_set_LOA (struct afb_session *session, unsigned loa);
 
-extern void *afb_session_get_value(struct afb_session *session, int index);
-extern void afb_session_set_value(struct afb_session *session, int index, void *value, void (*freecb)(void*));
-
 extern void *afb_session_get_cookie(struct afb_session *session, const void *key);
 extern int afb_session_set_cookie(struct afb_session *session, const void *key, void *value, void (*freecb)(void*));
 
diff --git a/src/main.c b/src/main.c
index 40ad19c8..39296742 100644
--- a/src/main.c
+++ b/src/main.c
@@ -429,7 +429,7 @@ int main(int argc, char *argv[])
 	start_list(config->ldpaths, afb_api_so_add_pathset, "the binding path set");
 	start_list(config->so_bindings, afb_api_so_add_binding, "the binding");
 
-	afb_session_init(config->nbSessionMax, config->cntxTimeout, config->token, afb_apis_count());
+	afb_session_init(config->nbSessionMax, config->cntxTimeout, config->token);
 
 	start_list(config->dbus_servers, afb_api_dbus_add_server, "the afb-dbus service");
 	start_list(config->ws_servers, afb_api_ws_add_server, "the afb-websocket service");