From c90f89aff98645642429092e85af75f3f88ce863 Mon Sep 17 00:00:00 2001
From: epochqwert <epoch@hacking.allowed.org>
Date: Tue, 11 Oct 2016 06:41:30 +0000
Subject: added matching of missing portions of the URL

---
 matchurl.c | 40 ++++++++++++++++++++++++++++------------
 1 file changed, 28 insertions(+), 12 deletions(-)

diff --git a/matchurl.c b/matchurl.c
index 9be390f..47a2a20 100644
--- a/matchurl.c
+++ b/matchurl.c
@@ -5,18 +5,31 @@
 
 #define LINE_LENGTH 1024
 
+int match(char negate,char *part,char *arg) {
+ if(negate) {
+  if(part == 0) return 1;//we found that the part isn't here!
+ } else {
+  if(part) {
+   if(!strcmp(part,arg)) return 1;
+  }
+ }
+ return 0;
+}
+
 int main(int argc,char *argv[]) {
  int i;
  int ret=1;
  struct url u;
+ char negate=0;
  char *line=malloc(LINE_LENGTH);
  char copy[LINE_LENGTH];
- if(argc < 3) {
-  printf("usage: matchurl [-][s|u|k|d|D|P|p|q|f] [string]\n");
+ if(argc < 2) {
+  printf("usage: matchurl [-][n][s|u|k|d|D|P|p|q|f] [string]\n");
   printf("scheme://username:password@domain:port/path?query_string#fragment_id\n");
   printf("s://u:k@d:P/p?q#f\n");
   printf("The D flag is special. it matches its argument against the last bytes of the input url's domain.\n");
   printf("This allows matching of subdomains, like `echo epoch.ano | matchurl -D ano` would match.\n");
+  printf("the 'n' flag can be put before any of the other flags to check for a missing.\n");
   return 1;
  }
  while(fgets(line,LINE_LENGTH-1,stdin)) {
@@ -27,18 +40,21 @@ int main(int argc,char *argv[]) {
   urlfromline(&u,line);
   //use the character in argv[1] to match stdin against argv[2]. if match print whole line.
   for(i=1;i<argc;i+=2) {
+   if(negate) {i--;}//we didn't really need to go that far.
+   negate=0;
    if(argv[i][0] == '-') argv[i]++;
+   if(argv[i][0] == 'n') {argv[i]++; negate=1; }//heh.
    switch(argv[i][0]) {
-    case 's': if(u.scheme       && !strcmp(u.scheme,argv[i+1]))       {printf("%s\n",copy); ret=0;} break;
-    case 'u': if(u.username     && !strcmp(u.username,argv[i+1]))     {printf("%s\n",copy); ret=0;} break;
-    case 'k': if(u.password     && !strcmp(u.password,argv[i+1]))     {printf("%s\n",copy); ret=0;} break;
-    case 'd': if(u.domain       && !strcmp(u.domain,argv[i+1]))       {printf("%s\n",copy); ret=0;} break;
-    case 'P': if(u.port         && !strcmp(u.port,argv[i+1]))         {printf("%s\n",copy); ret=0;} break;
-    case 'p': if(u.path         && !strcmp(u.path,argv[i+1]))         {printf("%s\n",copy); ret=0;} break;
-    case 'q': if(u.query_string && !strcmp(u.query_string,argv[i+1])) {printf("%s\n",copy); ret=0;} break;
-    case 'f': if(u.fragment_id  && !strcmp(u.fragment_id,argv[i+1]))  {printf("%s\n",copy); ret=0;} break;
-    case 'D':
-     if(u.domain && strlen(u.domain) >= strlen(argv[i+1]) && !strncmp(u.domain+strlen(u.domain)-strlen(argv[i+1]),argv[i+1],strlen(argv[i+1]))) 
+    case 's': if(match(negate,u.scheme,argv[i+1]))       { printf("%s\n",copy); ret=0;} break;
+    case 'u': if(match(negate,u.username,argv[i+1]))     { printf("%s\n",copy); ret=0;} break;
+    case 'k': if(match(negate,u.password,argv[i+1]))     { printf("%s\n",copy); ret=0;} break;
+    case 'd': if(match(negate,u.domain,argv[i+1]))       { printf("%s\n",copy); ret=0;} break;
+    case 'P': if(match(negate,u.port,argv[i+1]))         { printf("%s\n",copy); ret=0;} break;
+    case 'p': if(match(negate,u.path,argv[i+1]))         { printf("%s\n",copy); ret=0;} break;
+    case 'q': if(match(negate,u.query_string,argv[i+1])) { printf("%s\n",copy); ret=0;} break;
+    case 'f': if(match(negate,u.fragment_id,argv[i+1]))  { printf("%s\n",copy); ret=0;} break;
+    case 'D': //not sure how to look for a missing one of these. it'd be like d.
+     if(u.domain && argv[i+1] && strlen(u.domain) >= strlen(argv[i+1]) && !strncmp(u.domain+strlen(u.domain)-strlen(argv[i+1]),argv[i+1],strlen(argv[i+1]))) 
       printf("%s\n",copy);
       ret=0;
      break;
-- 
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