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don't use black list for urlencoding, use white list.

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This commit is contained in:
leitner 2003-09-29 01:12:36 +00:00
parent 57e7673e42
commit 3279ca84f8
1 changed files with 9 additions and 2 deletions
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11
textcode/fmt_urlencoded.c
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@ -3,12 +3,19 @@
#include "str.h" #include "str.h"
#include "haveinline.h" #include "haveinline.h"
static inline int issafe(unsigned char c) {
const char safe[] = "$/.=~";
return ((c>='A' && c<='Z') ||
(c>='a' && c<='z') ||
(c>='0' && c<='9') ||
safe[str_chr(safe,c)]);
}
unsigned long fmt_urlencoded(char* dest,const char* src,unsigned long len) { unsigned long fmt_urlencoded(char* dest,const char* src,unsigned long len) {
const char unsafe[]=" +%<>\"#{}|\\^~[]`;/?:@=&";
register const unsigned char* s=(const unsigned char*) src; register const unsigned char* s=(const unsigned char*) src;
unsigned long written=0,i; unsigned long written=0,i;
for (i=0; i<len; ++i) { for (i=0; i<len; ++i) {
if (s[i]&0x80 || unsafe[str_chr(unsafe,s[i])]==s[i]) { if (!issafe(s[i])) {
if (dest) { if (dest) {
dest[written]='%'; dest[written]='%';
dest[written+1]=fmt_tohex(s[i]>>4); dest[written+1]=fmt_tohex(s[i]>>4);