-#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
/* Converts a hex character to its integer value */
char from_hex(char ch) {
- return (char)(isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10);
+ 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];
+ 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;
+ char *buf, *pbuf;
- while (*pstr) {
- if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~')
- *pbuf++ = *pstr;
+ pbuf = buf = mallocz(strlen(str) * 3 + 1);
- else if (*pstr == ' ')
- *pbuf++ = '+';
+ while (*str) {
+ if (isalnum(*str) || *str == '-' || *str == '_' || *str == '.' || *str == '~')
+ *pbuf++ = *str;
- else
- *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
+ else if (*str == ' ')
+ *pbuf++ = '+';
- pstr++;
- }
+ else
+ *pbuf++ = '%', *pbuf++ = to_hex(*str >> 4), *pbuf++ = to_hex(*str & 15);
- *pbuf = '\0';
+ str++;
+ }
+ *pbuf = '\0';
- return buf;
+ pbuf = strdupz(buf);
+ freez(buf);
+ return pbuf;
}
/* 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;
+ size_t size = strlen(str) + 1;
+
+ char *buf = mallocz(size);
+ return url_decode_r(buf, str, size);
}
+char *url_decode_r(char *to, char *url, size_t size) {
+ char *s = url, // source
+ *d = to, // destination
+ *e = &to[size - 1]; // destination end
+
+ while(*s && d < e) {
+ if(unlikely(*s == '%')) {
+ if(likely(s[1] && s[2])) {
+ *d++ = from_hex(s[1]) << 4 | from_hex(s[2]);
+ s += 2;
+ }
+ }
+ else if(unlikely(*s == '+'))
+ *d++ = ' ';
+
+ else
+ *d++ = *s;
+
+ s++;
+ }
+
+ *d = '\0';
+
+ return to;
+}