util iptv: some url processing utilities

src/url.c

@@ -0,0 +1,69 @@
+/*
+ *  Tvheadend - URL Processing
+ *
+ *  Copyright (C) 2013 Adam Sutton
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "tvheadend.h"
+#include "url.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <regex.h>
+#include <string.h>
+
+int 
+urlparse ( const char *str, url_t *url )
+{
+  static regex_t *exp = NULL;
+  regmatch_t m[12];
+  char buf[16];
+
+  /* Create regexp */
+  if (!exp) {
+    exp = calloc(1, sizeof(regex_t));
+    if (regcomp(exp, URL_RE, REG_ICASE | REG_EXTENDED)) {
+      tvherror("iptv", "failed to compile regexp");
+      exit(1);
+    }
+  }
+
+  /* Execute */
+  if (regexec(exp, str, 12, m, 0))
+    return 1;
+    
+  /* Extract data */
+#define copy(x, i)\
+  {\
+    int len = m[i].rm_eo - m[i].rm_so;\
+    if (len >= sizeof(x) - 1)\
+      len = sizeof(x) - 1;\
+    memcpy(x, str+m[i].rm_so, len);\
+    x[len] = 0;\
+  }(void)0
+  copy(url->scheme, 1);
+  copy(url->user,   3);
+  copy(url->pass,   5);
+  copy(url->host,   6);
+  copy(url->path,   9);
+  copy(buf,         8);
+  url->port = atoi(buf);
+
+  strncpy(url->raw, str, sizeof(url->raw));
+
+ 
+  return 0;
+}

src/url.h

@@ -0,0 +1,47 @@
+/*
+ *  Tvheadend - URL Processing
+ *
+ *  Copyright (C) 2013 Adam Sutton
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __TVH_URL_H__
+#define __TVH_URL_H__
+
+#include <stdint.h>
+
+// TODO: might be better to find a lib to do this!
+
+/* URL structure */
+typedef struct url
+{
+  char      scheme[16];
+  char      user[128];
+  char      pass[128];
+  char      host[256];
+  uint16_t  port;
+  char      path[256];
+  char      raw[1024];
+} url_t;
+
+/* URL regexp - I probably found this online */
+#define UC "[a-z0-9_\\-\\.!£$%^&]"
+#define PC UC
+#define HC "[a-z0-9\\-\\.]"
+#define URL_RE "^(\\w+)://(("UC"+)(:("PC"+))?@)?("HC"+)(:([0-9]+))?(/.*)?"
+
+int urlparse ( const char *str, url_t *url );
+
+#endif