From b7849c483393cf510cbe4bca137ce4520b636685 Mon Sep 17 00:00:00 2001
From: epochqwert <epoch@hacking.allowed.org>
Date: Sat, 22 Aug 2015 03:36:15 -0500
Subject: initial commit.

---
 url.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 url.c

(limited to 'url.c')

diff --git a/url.c b/url.c
new file mode 100644
index 0000000..3fd2dae
--- /dev/null
+++ b/url.c
@@ -0,0 +1,131 @@
+//#include <stdio.h>
+#include <string.h>
+//#include <stdlib.h>
+
+/*
+ schemes are case sensitive but cononicals are lower case.
+ domain is case insensitive. return it lowercased?
+ port is optional and in decimal
+ path
+ scheme://username:password@domain:port/path?query_string#fragment_id
+ mailto:username@domain
+
+ optional stuff:
+ scheme, username, password, port, path, query_string, fragment_id
+*/
+
+#include "url.h"
+
+/*
+struct url {
+ char *scheme;
+ char *username;
+ char *password;
+ char *domain;
+ char *port;
+ char *path;
+ char *query_string;
+ char *fragment_id;
+}
+*/
+
+void urlfromline(struct url *u,char *line) {
+ int i;
+  //split at first single / into line and path
+  for(i=0;line[i];i++) {
+   if(line[i] == '/' && line[i+1] == '/') {
+    i++;
+    continue;
+   }
+   if(line[i] == '/') {
+    line[i]=0;
+    u->path=line+i+1;
+    break;
+   }
+  }
+  if(u->path) {
+   if(strchr(u->path,'?')) {
+    u->query_string=strchr(u->path,'?');
+    *u->query_string=0;
+    u->query_string++;
+   }
+  }
+
+  if(u->query_string) {
+   if(strchr(u->query_string,'#')) {
+    u->fragment_id=strchr(u->query_string,'#');
+    *u->fragment_id=0;
+    u->fragment_id++;
+   }
+  }
+
+  if(strstr(line,"://")) {
+   u->scheme=line;
+   u->domain=strstr(line,"://");
+   *u->domain=0;
+   u->domain+=3;
+  } else {
+   u->domain=line;
+  }
+
+  if(u->domain) {
+   if(strchr(u->domain,'@')) {
+    u->username=u->domain;
+    u->domain=strchr(u->domain,'@');
+    *u->domain=0;
+    u->domain++;
+   }
+  }
+
+  if(u->username) {
+   if(strchr(u->username,':')) {
+    u->password=strchr(u->username,':');
+    *u->password=0;
+    u->password++;
+   }
+  }
+
+  if(u->domain) {
+   if(strchr(u->domain,']')) {//the end of an IPv6 address
+    if(strchr(strchr(u->domain,']'),':')) {
+     u->port=strchr(strchr(u->domain,']'),':');
+     if(u->port[1] == '?') {//for magnet links
+      u->port=0;
+     } else {
+      *u->port=0;
+      u->port++;
+     }
+    }
+   } else {
+    if(strchr(u->domain,':')) {
+     u->port=strchr(u->domain,':');
+     if(u->port[1] == '?') {//for magnet links
+      u->port=0;
+     } else {
+      *u->port=0;
+      u->port++;
+     }
+    }
+   }
+  }
+
+  if(u->domain) {//for magnet links.
+   if(strchr(u->domain,'?')) {
+    u->query_string=strchr(u->domain,'?');
+    *u->query_string=0;
+    u->query_string++;
+   }
+  }
+
+  if(strchr(u->domain,':') && !strchr(u->domain,']')) {//for scheme:?query_string
+   u->scheme=u->domain;
+   *strchr(u->scheme,':')=0;
+   u->domain=0;
+  }
+
+  if(!u->scheme && u->username) {//for mailto:
+   u->scheme=u->username;
+   u->username=u->password;
+   u->password=0;
+  }
+}
-- 
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