* rename cmd: exists -> check

src/backend-test.c

@@ -48,8 +48,8 @@ int main(int argc, char *argv[]) {
     goto cleanup;
   }
 
-  if (!backend->exists(backend->cfg, ip)) {
-    f2b_log_msg(log_error, "action 'exists' failed");
+  if (!backend->check(backend->cfg, ip)) {
+    f2b_log_msg(log_error, "action 'check' failed");
     goto cleanup;
   }
 

src/backend.c

@@ -38,9 +38,9 @@ f2b_backend_create(f2b_config_section_t *config, const char *id) {
     goto cleanup;
   if ((*(void **) (&backend->ban)     = dlsym(backend->h, "ban"))     == NULL)
     goto cleanup;
-  if ((*(void **) (&backend->unban)   = dlsym(backend->h, "unban"))   == NULL)
+  if ((*(void **) (&backend->check)   = dlsym(backend->h, "check"))   == NULL)
     goto cleanup;
-  if ((*(void **) (&backend->exists)  = dlsym(backend->h, "exists"))  == NULL)
+  if ((*(void **) (&backend->unban)   = dlsym(backend->h, "unban"))   == NULL)
     goto cleanup;
   if ((*(void **) (&backend->destroy) = dlsym(backend->h, "destroy")) == NULL)
     goto cleanup;

src/backend.h

@@ -14,8 +14,8 @@ typedef struct f2b_backend_t {
   bool  (*stop)    (void *cfg);
   bool  (*ping)    (void *cfg);
   bool  (*ban)     (void *cfg, const char *ip);
+  bool  (*check)   (void *cfg, const char *ip);
   bool  (*unban)   (void *cfg, const char *ip);
-  bool  (*exists)  (void *cfg, const char *ip);
   void  (*destroy) (void *cfg);
 } f2b_backend_t;
 

src/backends/backend.h

@@ -11,6 +11,6 @@ extern bool    start(cfg_t *c);
 extern bool     stop(cfg_t *c);
 extern bool     ping(cfg_t *c);
 extern bool      ban(cfg_t *c, const char *ip);
+extern bool    check(cfg_t *c, const char *ip);
 extern bool    unban(cfg_t *c, const char *ip);
-extern bool   exists(cfg_t *c, const char *ip);
 extern void  destroy(cfg_t *c);

src/backends/exec.c

@@ -24,7 +24,7 @@ struct _config {
   cmd_t *stop;
   cmd_t *ban;
   cmd_t *unban;
-  cmd_t *exists;
+  cmd_t *check;
 };
 
 static cmd_t *
@@ -167,7 +167,7 @@ config(cfg_t *cfg, const char *key, const char *value) {
   CREATE_CMD(stop)
   CREATE_CMD(ban)
   CREATE_CMD(unban)
-  CREATE_CMD(exists)
+  CREATE_CMD(check)
 
   return false;
 }
@@ -217,16 +217,15 @@ unban(cfg_t *cfg, const char *ip) {
 }
 
 bool
-exists(cfg_t *cfg, const char *ip) {
+check(cfg_t *cfg, const char *ip) {
   assert(cfg != NULL && ip != NULL);
 
-  if (!cfg->exists)
-    return true;
+  if (!cfg->check)
+    return false;
 
-  return cmd_list_exec(cfg->exists, ip, cfg->timeout);
+  return cmd_list_exec(cfg->check, ip, cfg->timeout);
 }
 
-
 bool
 ping(cfg_t *cfg) {
   return cfg != NULL;
@@ -241,6 +240,6 @@ destroy(cfg_t *cfg) {
   cmd_list_destroy(cfg->stop);
   cmd_list_destroy(cfg->ban);
   cmd_list_destroy(cfg->unban);
-  cmd_list_destroy(cfg->exists);
+  cmd_list_destroy(cfg->check);
   free(cfg);
 }