1 files changed, 99 insertions, 0 deletions
diff --git a/src/or/args.c b/src/or/args.c
new file mode 100644
index 000000000..fc3837ca8
--- /dev/null
+++ b/src/or/args.c
@@ -0,0 +1,99 @@
+/**
+ * args.c 
+ * Routines for processing command-line arguments.
+ *
+ * Matej Pfajfar <mp292@cam.ac.uk>
+ */
+
+/*
+ * Changes :
+ * $Log$
+ * Revision 1.1  2002/06/26 22:45:50  arma
+ * Initial revision
+ *
+ * Revision 1.3  2002/01/27 00:42:50  mp292
+ * Reviewed according to Secure-Programs-HOWTO.
+ *
+ * Revision 1.2  2002/01/04 10:05:28  badbytes
+ * Completed.
+ *
+ * Revision 1.1  2002/01/03 10:23:43  badbytes
+ * Code based on that in op. Needs to be modified.
+ */
+
+#include "or.h"
+
+/* prints help on using or */
+void print_usage()
+{
+  char *program = "or";
+  printf("\n%s - Onion Router.\nUsage : %s -f config [-l loglevel -h]\n-h : display this help\n-f config : config file\n-l loglevel : logging threshold; one of alert|crit|err|warning|notice|info|debug\n\n", program,program);
+}
+
+
+/* get command-line arguments */
+int getargs(int argc,char *argv[], char *args, char **conf_filename, int *loglevel)
+{
+  char c; /* next option character */
+  int gotf=0;
+
+  if ((!args) || (!conf_filename) || (!loglevel))
+    return -1;
+  
+  while ((c = getopt(argc,argv,args)) != -1)
+  {
+    switch(c)
+    {
+     case 'f': /* config file */
+      *conf_filename = optarg;
+      gotf=1;
+      break;
+     case 'h':
+      print_usage(argv[0]);
+      exit(0);
+     case 'l':
+      if (!strcmp(optarg,"emerg"))
+	*loglevel = LOG_EMERG;
+      else if (!strcmp(optarg,"alert"))
+	*loglevel = LOG_ALERT;
+      else if (!strcmp(optarg,"crit"))
+	*loglevel = LOG_CRIT;
+      else if (!strcmp(optarg,"err"))
+	*loglevel = LOG_ERR;
+      else if (!strcmp(optarg,"warning"))
+	*loglevel = LOG_WARNING;
+      else if (!strcmp(optarg,"notice"))
+	*loglevel = LOG_NOTICE;
+      else if (!strcmp(optarg,"info"))
+	*loglevel = LOG_INFO;
+      else if (!strcmp(optarg,"debug"))
+	*loglevel = LOG_DEBUG;
+      else
+      {
+	log(LOG_ERR,"Error : argument to -l must be one of alert|crit|err|warning|notice|info|debug.");
+	print_usage(argv[0]);
+	return -1;
+      }
+      break;
+     case '?':
+      if (isprint(c))
+	log(LOG_ERR,"Missing argument or unknown option '-%c'. See help (-h).",optopt);
+      else
+	log(LOG_ERR,"Unknown option character 'x%x'. See help (-h).",optopt);
+      print_usage(argv[0]);
+      return -1;
+      break;
+     default:
+      return -1;
+    }
+  }
+  
+  /* the -f option is mandatory */
+  if (!gotf)
+  {
+    log(LOG_ERR,"You must specify a config file with the -f option. See help (-h).");
+    return -1;
+  }
+  
+  return 0;
+}