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authorFederico Ceratto <federico.ceratto@gmail.com>2016-03-30 21:40:42 +0000
committerFederico Ceratto <federico.ceratto@gmail.com>2016-03-30 21:40:42 +0000
commit9ce153ce7167c11adba8ac225edc7a707e97c6eb (patch)
tree9f6e849cce2dcc7e5b4e9e6252c843dc2d0787a2 /src/url.c
downloadnetdata-9ce153ce7167c11adba8ac225edc7a707e97c6eb.tar.xz
netdata-9ce153ce7167c11adba8ac225edc7a707e97c6eb.zip
Imported Upstream version 1.0.0upstream/1.0.0
Diffstat (limited to 'src/url.c')
-rwxr-xr-xsrc/url.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/url.c b/src/url.c
new file mode 100755
index 000000000..c4933b205
--- /dev/null
+++ b/src/url.c
@@ -0,0 +1,81 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "common.h"
+#include "log.h"
+#include "url.h"
+
+// ----------------------------------------------------------------------------
+// URL encode / decode
+// code from: http://www.geekhideout.com/urlcode.shtml
+
+/* Converts a hex character to its integer value */
+char from_hex(char ch) {
+ return (char)(isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10);
+}
+
+/* Converts an integer value to its hex character*/
+char to_hex(char code) {
+ static char hex[] = "0123456789abcdef";
+ return hex[code & 15];
+}
+
+/* Returns a url-encoded version of str */
+/* IMPORTANT: be sure to free() the returned string after use */
+char *url_encode(char *str) {
+ char *pstr = str,
+ *buf = malloc(strlen(str) * 3 + 1),
+ *pbuf = buf;
+
+ while (*pstr) {
+ if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~')
+ *pbuf++ = *pstr;
+
+ else if (*pstr == ' ')
+ *pbuf++ = '+';
+
+ else
+ *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
+
+ pstr++;
+ }
+
+ *pbuf = '\0';
+
+ return buf;
+}
+
+/* Returns a url-decoded version of str */
+/* IMPORTANT: be sure to free() the returned string after use */
+char *url_decode(char *str) {
+ char *pstr = str,
+ *buf = malloc(strlen(str) + 1),
+ *pbuf = buf;
+
+ if(!buf) fatal("Cannot allocate memory.");
+
+ while (*pstr) {
+ if (*pstr == '%') {
+ if (pstr[1] && pstr[2]) {
+ *pbuf++ = from_hex(pstr[1]) << 4 | from_hex(pstr[2]);
+ pstr += 2;
+ }
+ }
+ else if (*pstr == '+')
+ *pbuf++ = ' ';
+
+ else
+ *pbuf++ = *pstr;
+
+ pstr++;
+ }
+
+ *pbuf = '\0';
+
+ return buf;
+}
+