/*
* Encode (hexify) a mailto url.
*
* Args s -- src url
*
* Returns An allocated string which is suitably encoded.
* Result should be freed by caller.
*
* Since we don't know here which characters are reserved characters (? and &)
* for use in delimiting the pieces of the url and which are just those
* characters contained in the data that should be encoded, we always encode
* them. That's because we know we don't use those as reserved characters.
* If you do use those as reserved characters you have to encode each part
* separately.
*/
char *
rfc1738_encode_mailto(char *s)
{
char *d, *ret = NULL;
if(s){
/* Worst case, encode every character */
ret = d = (char *)fs_get((3*strlen(s) + 1) * sizeof(char));
while(*s){
if(isalnum((unsigned char)*s)
|| strchr(RFC1738_SAFE, *s)
|| strchr(RFC1738_EXTRA, *s))
*d++ = *s++;
else{
*d++ = '%';
C2XPAIR(*s, d);
s++;
}
}
*d = '\0';
}
return(ret);
}
int
rfc2231_output(STORE_S *so, char *attrib, char *value, char *specials, char *charset)
{
int i, line = 0, encode = 0, quote = 0;
/*
* scan for hibit first since encoding clue has to
* come on first line if any parms are broken up...
*/
for(i = 0; value && value[i]; i++)
if(value[i] & 0x80){
encode++;
break;
}
for(i = 0; ; i++){
if(!(value && value[i]) || i > 80){ /* flush! */
if((line++ && !so_puts(so, ";\015\012 "))
|| !so_puts(so, attrib))
return(0);
if(value){
if(((value[i] || line > 1) /* more lines or already lines */
&& !(so_writec('*', so)
&& so_puts(so, int2string(line - 1))))
|| (encode && !so_writec('*', so))
|| !so_writec('=', so)
|| (quote && !so_writec('\"', so))
|| ((line == 1 && encode)
&& !(so_puts(so, charset ? charset : UNKNOWN_CHARSET)
&& so_puts(so, "''"))))
return(0);
while(i--){
if(*value & 0x80){
char tmp[3], *p;
p = tmp;
C2XPAIR(*value, p);
*p = '\0';
if(!(so_writec('%', so) && so_puts(so, tmp)))
return(0);
}
else if(((*value == '\\' || *value == '\"')
&& !so_writec('\\', so))
|| !so_writec(*value, so))
return(0);
value++;
}
if(quote && !so_writec('\"', so))
return(0);
if(*value) /* more? */
i = quote = 0; /* reset! */
else
return(1); /* done! */
}
else
return(1);
}
if(!quote && strchr(specials, value[i]))
quote++;
}
}
