check_dhcp: Fix option parsing

The call_getopt() function didn't always return the correct number of
processed arguments.  However, since check_dhcp doesn't support
non-option arguments, the caller doesn't need this number anyway.

Closes #1345.

1 files changed, 12 insertions, 31 deletions

diff --git a/plugins-root/check_dhcp.c b/plugins-root/check_dhcp.c
index 5508d5f9..25d4ed40 100644
--- a/plugins-root/check_dhcp.c
+++ b/plugins-root/check_dhcp.c
@@ -229,7 +229,7 @@ struct in_addr requested_address;
 
 int process_arguments(int, char **);
 int call_getopt(int, char **);
-int validate_arguments(void);
+int validate_arguments(int, int);
 void print_usage(void);
 void print_help(void);
 
@@ -1059,29 +1059,19 @@ int get_results(void){
 
 /* process command-line arguments */
 int process_arguments(int argc, char **argv){
-        int c;
+        int arg_index;
 
         if(argc<1)
                 return ERROR;
 
-        c=0;
-        while((c+=(call_getopt(argc-c,&argv[c])))<argc){
-
-                /*
-                if(is_option(argv[c]))
-                        continue;
-                */
-                }
-
-        return validate_arguments();
+        arg_index = call_getopt(argc,argv);
+        return validate_arguments(argc,arg_index);
         }
 
 
 
 int call_getopt(int argc, char **argv){
-        int c=0;
-        int i=0;
-
+        extern int optind;
         int option_index = 0;
         static struct option long_options[] =
         {
@@ -1098,25 +1088,14 @@ int call_getopt(int argc, char **argv){
         };
 
         while(1){
-                c=getopt_long(argc,argv,"+hVvt:s:r:t:i:m:u",long_options,&option_index);
+                int c=0;
 
-                i++;
+                c=getopt_long(argc,argv,"+hVvt:s:r:t:i:m:u",long_options,&option_index);
 
                 if(c==-1||c==EOF||c==1)
                         break;
 
                 switch(c){
-                case 'w':
-                case 'r':
-                case 't':
-                case 'i':
-                        i++;
-                        break;
-                default:
-                        break;
-                        }
-
-                switch(c){
 
                 case 's': /* DHCP server address */
                         resolve_host(optarg,&dhcp_ip);
@@ -1181,12 +1160,14 @@ int call_getopt(int argc, char **argv){
                         break;
                         }
                 }
-
-        return i+1;
+        return optind;
         }
 
 
-int validate_arguments(void){
+int validate_arguments(int argc, int arg_index){
+
+        if(argc-optind > 0)
+                usage(_("Got unexpected non-option argument"));
 
         return OK;
         }