X-Git-Url: https://git.octo.it/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmain.c;h=010572d5b5153490e81aa2a2975ffe90a6243d81;hb=2161912e62a4a6fb9559c62a84f0af862a1092ca;hp=d35c30c1e5687da44979157ece95c806aac9b347;hpb=eaf833181d524686630c4a5504e16ab9cbcbbc2d;p=routeros-api.git

diff --git a/src/main.c b/src/main.c
index d35c30c..010572d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -348,6 +348,12 @@ static int send_command (ros_connection_t *c, /* {{{ */
 	size_t i;
 	int status;
 
+	assert (c != NULL);
+	assert (command != NULL);
+
+	if ((args == NULL) && (args_num > 0))
+		return (EINVAL);
+
 	/* FIXME: For debugging only */
 	memset (buffer, 0, sizeof (buffer));
 
@@ -412,6 +418,8 @@ static int read_word (ros_connection_t *c, /* {{{ */
 	if ((buffer == NULL) || (*buffer_size < 1))
 		return (EINVAL);
 
+	assert (c != NULL);
+
 	/* read one byte from the socket */
 	status = read_exact (c->fd, word_length, 1);
 	if (status != 0)
@@ -558,6 +566,9 @@ static ros_reply_t *receive_reply (ros_connection_t *c) /* {{{ */
 	ros_reply_t *head;
 	ros_reply_t *tail;
 
+	if (c == NULL)
+		return (NULL);
+
 	head = NULL;
 	tail = NULL;
 
@@ -845,6 +856,9 @@ int ros_query (ros_connection_t *c, /* {{{ */
 	int status;
 	ros_reply_t *r;
 
+	if ((c == NULL) || (command == NULL) || (handler == NULL))
+		return (EINVAL);
+
 	status = send_command (c, command, args_num, args);
 	if (status != 0)
 		return (status);