Rod Coleman / NetServSB2

Netservices modded to read fragmented HTTP respsonse/payload from special purpose server - 180 bytes only

services/http/util/urlencode.cpp@0:850eacf3e945, 2011-09-08 (annotated)

Committer:
RodColeman
Date:
Thu Sep 08 10:48:09 2011 +0000
Revision:
0:850eacf3e945
revised fixed length to 178 bytes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:850eacf3e945 1
RodColeman 0:850eacf3e945 2 /*
RodColeman 0:850eacf3e945 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
RodColeman 0:850eacf3e945 4
RodColeman 0:850eacf3e945 5 Permission is hereby granted, free of charge, to any person obtaining a copy
RodColeman 0:850eacf3e945 6 of this software and associated documentation files (the "Software"), to deal
RodColeman 0:850eacf3e945 7 in the Software without restriction, including without limitation the rights
RodColeman 0:850eacf3e945 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
RodColeman 0:850eacf3e945 9 copies of the Software, and to permit persons to whom the Software is
RodColeman 0:850eacf3e945 10 furnished to do so, subject to the following conditions:
RodColeman 0:850eacf3e945 11
RodColeman 0:850eacf3e945 12 The above copyright notice and this permission notice shall be included in
RodColeman 0:850eacf3e945 13 all copies or substantial portions of the Software.
RodColeman 0:850eacf3e945 14
RodColeman 0:850eacf3e945 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
RodColeman 0:850eacf3e945 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
RodColeman 0:850eacf3e945 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
RodColeman 0:850eacf3e945 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
RodColeman 0:850eacf3e945 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
RodColeman 0:850eacf3e945 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
RodColeman 0:850eacf3e945 21 THE SOFTWARE.
RodColeman 0:850eacf3e945 22 */
RodColeman 0:850eacf3e945 23
RodColeman 0:850eacf3e945 24 #include "url.h"
RodColeman 0:850eacf3e945 25 #include <stdlib.h>
RodColeman 0:850eacf3e945 26 #include <ctype.h>
RodColeman 0:850eacf3e945 27
RodColeman 0:850eacf3e945 28 //From http://www.geekhideout.com/urlcode.shtml
RodColeman 0:850eacf3e945 29
RodColeman 0:850eacf3e945 30 char from_hex(char ch);
RodColeman 0:850eacf3e945 31 char to_hex(char code);
RodColeman 0:850eacf3e945 32
RodColeman 0:850eacf3e945 33 /* Converts a hex character to its integer value */
RodColeman 0:850eacf3e945 34 char from_hex(char ch) {
RodColeman 0:850eacf3e945 35 return isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10;
RodColeman 0:850eacf3e945 36 }
RodColeman 0:850eacf3e945 37
RodColeman 0:850eacf3e945 38 /* Converts an integer value to its hex character*/
RodColeman 0:850eacf3e945 39 char to_hex(char code) {
RodColeman 0:850eacf3e945 40 static char hex[] = "0123456789abcdef";
RodColeman 0:850eacf3e945 41 return hex[code & 15];
RodColeman 0:850eacf3e945 42 }
RodColeman 0:850eacf3e945 43
RodColeman 0:850eacf3e945 44 /* Returns a url-encoded version of str */
RodColeman 0:850eacf3e945 45 /* IMPORTANT: be sure to free() the returned string after use */
RodColeman 0:850eacf3e945 46 char *url_encode(char *str) {
RodColeman 0:850eacf3e945 47 char *pstr = str, *buf = (char*)malloc(strlen(str) * 3 + 1), *pbuf = buf;
RodColeman 0:850eacf3e945 48 while (*pstr) {
RodColeman 0:850eacf3e945 49 if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~')
RodColeman 0:850eacf3e945 50 *pbuf++ = *pstr;
RodColeman 0:850eacf3e945 51 else if (*pstr == ' ')
RodColeman 0:850eacf3e945 52 *pbuf++ = '+';
RodColeman 0:850eacf3e945 53 else
RodColeman 0:850eacf3e945 54 *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
RodColeman 0:850eacf3e945 55 pstr++;
RodColeman 0:850eacf3e945 56 }
RodColeman 0:850eacf3e945 57 *pbuf = '\0';
RodColeman 0:850eacf3e945 58 return buf;
RodColeman 0:850eacf3e945 59 }
RodColeman 0:850eacf3e945 60
RodColeman 0:850eacf3e945 61 /* Returns a url-decoded version of str */
RodColeman 0:850eacf3e945 62 /* IMPORTANT: be sure to free() the returned string after use */
RodColeman 0:850eacf3e945 63 char *url_decode(char *str) {
RodColeman 0:850eacf3e945 64 char *pstr = str, *buf = (char*)malloc(strlen(str) + 1), *pbuf = buf;
RodColeman 0:850eacf3e945 65 while (*pstr) {
RodColeman 0:850eacf3e945 66 if (*pstr == '%') {
RodColeman 0:850eacf3e945 67 if (pstr[1] && pstr[2]) {
RodColeman 0:850eacf3e945 68 *pbuf++ = from_hex(pstr[1]) << 4 | from_hex(pstr[2]);
RodColeman 0:850eacf3e945 69 pstr += 2;
RodColeman 0:850eacf3e945 70 }
RodColeman 0:850eacf3e945 71 } else if (*pstr == '+') {
RodColeman 0:850eacf3e945 72 *pbuf++ = ' ';
RodColeman 0:850eacf3e945 73 } else {
RodColeman 0:850eacf3e945 74 *pbuf++ = *pstr;
RodColeman 0:850eacf3e945 75 }
RodColeman 0:850eacf3e945 76 pstr++;
RodColeman 0:850eacf3e945 77 }
RodColeman 0:850eacf3e945 78 *pbuf = '\0';
RodColeman 0:850eacf3e945 79 return buf;
RodColeman 0:850eacf3e945 80 }