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/*
* de/encoding stuff. hopefully mostly to be depricated in favour of subst.c + strbuf
*/
#define SHOW_ME_VAPPEND_PRINTF
#include <stdio.h>
#include <stdarg.h>
#include "webcit.h"
/*
* remove escaped strings from i.e. the url string (like %20 for blanks)
*/
long unescape_input(char *buf)
{
unsigned int a, b;
char hex[3];
long buflen;
long len;
buflen = strlen(buf);
while ((buflen > 0) && (isspace(buf[buflen - 1]))){
buf[buflen - 1] = 0;
buflen --;
}
a = 0;
while (a < buflen) {
if (buf[a] == '+')
buf[a] = ' ';
if (buf[a] == '%') {
/* don't let % chars through, rather truncate the input. */
if (a + 2 > buflen) {
buf[a] = '\0';
buflen = a;
}
else {
hex[0] = buf[a + 1];
hex[1] = buf[a + 2];
hex[2] = 0;
b = 0;
b = decode_hex(hex);
buf[a] = (char) b;
len = buflen - a - 2;
if (len > 0)
memmove(&buf[a + 1], &buf[a + 3], len);
buflen -=2;
}
}
a++;
}
return a;
}
/*
* Copy a string, escaping characters which have meaning in HTML.
*
* target target buffer
* strbuf source buffer
* nbsp If nonzero, spaces are converted to non-breaking spaces.
* nolinebreaks if set, linebreaks are removed from the string.
*/
long stresc(char *target, long tSize, char *strbuf, int nbsp, int nolinebreaks)
{
char *aptr, *bptr, *eptr;
*target = '\0';
aptr = strbuf;
bptr = target;
eptr = target + tSize - 6; /* our biggest unit to put in... */
while ((bptr < eptr) && !IsEmptyStr(aptr) ){
if (*aptr == '<') {
memcpy(bptr, "<", 4);
bptr += 4;
}
else if (*aptr == '>') {
memcpy(bptr, ">", 4);
bptr += 4;
}
else if (*aptr == '&') {
memcpy(bptr, "&", 5);
bptr += 5;
}
else if (*aptr == '\"') {
memcpy(bptr, """, 6);
bptr += 6;
}
else if (*aptr == '\'') {
memcpy(bptr, "'", 5);
bptr += 5;
}
else if (*aptr == LB) {
*bptr = '<';
bptr ++;
}
else if (*aptr == RB) {
*bptr = '>';
bptr ++;
}
else if (*aptr == QU) {
*bptr ='"';
bptr ++;
}
else if ((*aptr == 32) && (nbsp == 1)) {
memcpy(bptr, " ", 6);
bptr += 6;
}
else if ((*aptr == '\n') && (nolinebreaks)) {
*bptr='\0'; /* nothing */
}
else if ((*aptr == '\r') && (nolinebreaks)) {
*bptr='\0'; /* nothing */
}
else{
*bptr = *aptr;
bptr++;
}
aptr ++;
}
*bptr = '\0';
if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
return -1;
return (bptr - target);
}
/*
* static wrapper for ecsputs1
*/
void escputs(const char *strbuf)
{
StrEscAppend(WC->WBuf, NULL, strbuf, 0, 0);
}
/*
* urlescape buffer and print it to the client
*/
void urlescputs(const char *strbuf)
{
StrBufUrlescAppend(WC->WBuf, NULL, strbuf);
}
/**
* urlescape buffer and print it as header
*/
void hurlescputs(const char *strbuf)
{
StrBufUrlescAppend(WC->HBuf, NULL, strbuf);
}
/*
* Output a string to the client as a CDATA block
*/
void cdataout(char *rawdata)
{
char *ptr = rawdata;
wc_printf("<![CDATA[");
while ((ptr != NULL) && (ptr[0] != 0))
{
if (!strncmp(ptr, "]]>", 3)) {
wc_printf("]]]]><![CDATA[>");
++ptr; ++ptr; ++ptr;
}
else {
wc_printf("%c", ptr[0]);
++ptr;
}
}
wc_printf("]]>");
}
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