Fix segfault on improper -C syntax

Avoid null pointer segfault when -C param is specified with no '=' e.g.
"rigctl -C foo".

Thanks to Charles Suprin <hamaa1vs@gmail.com> for the report.



git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@3058 7ae35d74-ebe9-4afe-98af-79ac388436b8

rpcrig/rpcrigd.c

@@ -91,7 +91,9 @@ int set_conf(RIG *my_rig, char *conf_parms)
 	while (p && *p != '\0') {
 			/* FIXME: left hand value of = cannot be null */
 		q = strchr(p, '=');
-		if (q) *q++ = '\0';
+		if ( !q )
+			return RIG_EINVAL;
+		*q++ = '\0';
 		n = strchr(q, ',');
 		if (n) *n++ = '\0';
 

tests/rigctl_parse.c

@@ -661,7 +661,9 @@ int set_conf(RIG *my_rig, char *conf_parms)
 	while (p && *p != '\0') {
 			/* FIXME: left hand value of = cannot be null */
 		q = strchr(p, '=');
-		if (q) *q++ = '\0';
+		if ( !q )
+			return RIG_EINVAL;
+		*q++ = '\0';
 		n = strchr(q, ',');
 		if (n) *n++ = '\0';
 

tests/rigmem.c

@@ -347,7 +347,9 @@ int set_conf(RIG *rig, char *conf_parms)
 	while (p && *p != '\0') {
 			/* FIXME: left hand value of = cannot be null */
 		q = strchr(p, '=');
-		if (q) *q++ = '\0';
+		if ( !q )
+			return RIG_EINVAL;
+		*q++ = '\0';
 		n = strchr(q, ',');
 		if (n) *n++ = '\0';
 

tests/rigsmtr.c

@@ -355,7 +355,9 @@ int set_conf_rig(RIG *rig, char *conf_parms)
 	while (p && *p != '\0') {
 			/* FIXME: left hand value of = cannot be null */
 		q = strchr(p, '=');
-		if (q) *q++ = '\0';
+		if ( !q )
+			return RIG_EINVAL;
+		*q++ = '\0';
 		n = strchr(q, ',');
 		if (n) *n++ = '\0';
 

tests/rigswr.c

@@ -303,7 +303,9 @@ int set_conf(RIG *rig, char *conf_parms)
 	while (p && *p != '\0') {
 			/* FIXME: left hand value of = cannot be null */
 		q = strchr(p, '=');
-		if (q) *q++ = '\0';
+		if ( !q )
+			return RIG_EINVAL;
+		*q++ = '\0';
 		n = strchr(q, ',');
 		if (n) *n++ = '\0';
 

tests/rotctl_parse.c

@@ -555,7 +555,9 @@ int set_conf(ROT *my_rot, char *conf_parms)
 	while (p && *p != '\0') {
 			/* FIXME: left hand value of = cannot be null */
 		q = strchr(p, '=');
-		if (q) *q++ = '\0';
+		if ( !q )
+			return RIG_EINVAL;
+		*q++ = '\0';
 		n = strchr(q, ',');
 		if (n) *n++ = '\0';