Update copyright dates

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

diff --git a/src/afb-context.c b/src/afb-context.c
index 5235707..899baa6 100644 (file)
--- a/src/afb-context.c
+++ b/src/afb-context.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2015-2019 "IoT.bzh"
+ * Copyright (C) 2015-2020 "IoT.bzh"
  * Author "Fulup Ar Foll"
  * Author José Bollo <jose.bollo@iot.bzh>
  *
@@ -27,6 +27,7 @@
 #include "afb-context.h"
 #include "afb-token.h"
 #include "afb-cred.h"
+#include "afb-perm.h"
 #include "afb-permission-text.h"
 #include "verbose.h"
 
@@ -41,25 +42,6 @@ static void init_context(struct afb_context *context, struct afb_session *sessio
        context->api_key = NULL;
        context->token = afb_token_addref(token);
        context->credentials = afb_cred_addref(cred);
-
-       /* check the token */
-       if (token != NULL) {
-               if (afb_token_check(token))
-                       context->validated = 1;
-               else
-                       context->invalidated = 1;
-       }
-}
-
-void afb_context_init(struct afb_context *context, struct afb_session *session, struct afb_token *token, struct afb_cred *cred)
-{
-       init_context(context, afb_session_addref(session), token, cred);
-}
-
-void afb_context_init_validated(struct afb_context *context, struct afb_session *session, struct afb_token *token, struct afb_cred *cred)
-{
-       afb_context_init(context, session, token, cred);
-       context->validated = 1;
 }
 
 void afb_context_subinit(struct afb_context *context, struct afb_context *super)
@@ -72,6 +54,11 @@ void afb_context_subinit(struct afb_context *context, struct afb_context *super)
        context->credentials = afb_cred_addref(super->credentials);
 }
 
+void afb_context_init(struct afb_context *context, struct afb_session *session, struct afb_token *token, struct afb_cred *cred)
+{
+       init_context(context, afb_session_addref(session), token, cred);
+}
+
 int afb_context_connect(struct afb_context *context, const char *uuid, struct afb_token *token, struct afb_cred *cred)
 {
        int created;
@@ -95,6 +82,12 @@ int afb_context_connect_validated(struct afb_context *context, const char *uuid,
        return rc;
 }
 
+void afb_context_init_validated(struct afb_context *context, struct afb_session *session, struct afb_token *token, struct afb_cred *cred)
+{
+       afb_context_init(context, session, token, cred);
+       context->validated = 1;
+}
+
 void afb_context_disconnect(struct afb_context *context)
 {
        if (context->session && !context->super && context->closing && !context->closed) {
@@ -123,8 +116,6 @@ void afb_context_change_token(struct afb_context *context, struct afb_token *tok
 {
        struct afb_token *otoken = context->token;
        if (otoken != token) {
-               context->validated = 0;
-               context->invalidated = 0;
                context->token = afb_token_addref(token);
                afb_token_unref(otoken);
        }
@@ -170,7 +161,17 @@ void afb_context_on_behalf_other_context(struct afb_context *context, struct afb
 
 int afb_context_has_permission(struct afb_context *context, const char *permission)
 {
-       return afb_cred_has_permission(context->credentials, permission, context);
+       return afb_perm_check(context, permission);
+}
+
+void afb_context_has_permission_async(
+       struct afb_context *context,
+       const char *permission,
+       void (*callback)(void *_closure, int _status),
+       void *closure
+)
+{
+       return afb_perm_check_async(context, permission, callback, closure);
 }
 
 const char *afb_context_uuid(struct afb_context *context)
@@ -201,16 +202,77 @@ void afb_context_close(struct afb_context *context)
        context->closing = 1;
 }
 
-int afb_context_check(struct afb_context *context)
+struct chkctx {
+       struct afb_context *context;
+       void (*callback)(void *_closure, int _status);
+       void *closure;
+};
+
+static void check_context_cb(void *closure_chkctx, int status)
 {
-       if (context->super)
-               return afb_context_check(context);
-       return context->validated;
+       struct chkctx *cc = closure_chkctx;
+       struct afb_context *context = cc->context;
+       void (*callback)(void*,int) = cc->callback;
+       void *closure = cc->closure;
+
+       free(cc);
+       if (status)
+               context->validated = 1;
+       else
+               context->invalidated = 1;
+       callback(closure, status);
 }
 
-int afb_context_check_loa(struct afb_context *context, unsigned loa)
+static int check_context(
+       struct afb_context *context,
+       void (*callback)(void *_closure, int _status),
+       void *closure
+) {
+       int r;
+       struct chkctx *cc;
+
+       if (context->validated)
+               r = 1;
+       else if (context->invalidated)
+               r = 0;
+       else {
+               if (context->super)
+                       r = check_context(context->super, callback, closure);
+               else if (!callback)
+                       r = afb_context_has_permission(context, afb_permission_token_valid);
+               else {
+                       cc = malloc(sizeof *cc);
+                       if (cc) {
+                               cc->context = context;
+                               cc->callback = callback;
+                               cc->closure = closure;
+                               afb_context_has_permission_async(context, afb_permission_token_valid, check_context_cb, cc);
+                               return -1;
+                       }
+                       ERROR("out-of-memory");
+                       r = 0;
+               }
+               if (r)
+                       context->validated = 1;
+               else
+                       context->invalidated = 1;
+       }
+       return r;
+}
+
+int afb_context_check(struct afb_context *context)
 {
-       return afb_context_get_loa(context) >= loa;
+       return check_context(context, 0, 0);
+}
+
+void afb_context_check_async(
+       struct afb_context *context,
+       void (*callback)(void *_closure, int _status),
+       void *closure
+) {
+       int r = check_context(context, callback, closure);
+       if (r >= 0)
+               callback(closure, r);
 }
 
 static inline const void *loa_key(struct afb_context *context)
@@ -230,10 +292,14 @@ static inline unsigned ptr2loa(void *ptr)
 
 int afb_context_change_loa(struct afb_context *context, unsigned loa)
 {
-       if (!context->validated || loa > 7) {
+       if (loa > 7) {
                errno = EINVAL;
                return -1;
        }
+       if (!afb_context_check(context)) {
+               errno = EPERM;
+               return -1;
+       }
 
        return afb_session_set_cookie(context->session, loa_key(context), loa2ptr(loa), NULL);
 }
@@ -243,3 +309,8 @@ unsigned afb_context_get_loa(struct afb_context *context)
        assert(context->session != NULL);
        return ptr2loa(afb_session_get_cookie(context->session, loa_key(context)));
 }
+
+int afb_context_check_loa(struct afb_context *context, unsigned loa)
+{
+       return afb_context_get_loa(context) >= loa;
+}