From 80a14ef0f636b8976c74d9832a8d7570750dfa09 Mon Sep 17 00:00:00 2001
From: paulino <paulino@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 16 Apr 2015 16:20:18 +0000
Subject: [PATCH] Prints a friendly error message when --resume is used with
 other options. Fixes #84

---
 main.cc | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/main.cc b/main.cc
index cd53306eb..c50a95116 100644
--- a/main.cc
+++ b/main.cc
@@ -175,6 +175,7 @@ int main(int argc, char *argv[]) {
   char *cptr;
   int ret;
   int i;
+  int resume;
 
   set_program_name(argv[0]);
 
@@ -216,14 +217,22 @@ int main(int argc, char *argv[]) {
     return ret;
   }
 
-  if (argc == 3 && strcmp("--resume", argv[1]) == 0) {
-    /* OK, they want to resume an aborted scan given the log file specified.
-       Lets gather our state from the log file */
-    if (gather_logfile_resumption_state(argv[2], &myargc, &myargv) == -1) {
-      fatal("Cannot resume from (supposed) log file %s", argv[2]);
+  /* Don't allow users to use --resume with other options */
+  for (i=0; i<argc; i++) {
+    if ( strcmp("--resume", argv[i]) == 0) {
+      resume = 1;
+      if(argc!=3) {
+        fatal("Cannot use --resume with other options. Usage: nmap --resume <filename>");
+      }
+      if (gather_logfile_resumption_state(argv[i+1], &myargc, &myargv) == -1) {
+        fatal("Cannot resume from (supposed) log file %s", argv[i+1]);
+      }
     }
-    return nmap_main(myargc, myargv);
   }
 
-  return nmap_main(argc, argv);
+  if (resume == 1) {
+    return nmap_main(myargc, myargv);
+  } else {
+    return nmap_main(argc, argv);
+  }
 }