148 lines
4.3 KiB
C
148 lines
4.3 KiB
C
/*
|
|
* Copyright (c) 2010, Kajtar Zsolt <soci@c64.rulez.org>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
* Author: Kajtar Zsolt <soci@c64.rulez.org>
|
|
*
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "cfs/cfs.h"
|
|
#include "http-strings.h"
|
|
|
|
#define ISO_number 0x23
|
|
#define ISO_percent 0x25
|
|
#define ISO_period 0x2e
|
|
#define ISO_slash 0x2f
|
|
#define ISO_question 0x3f
|
|
|
|
static char wwwroot[40];
|
|
static unsigned char wwwrootlen;
|
|
|
|
void
|
|
urlconv_init(void)
|
|
{
|
|
int fd = cfs_open("wwwroot.cfg", CFS_READ);
|
|
int rd = cfs_read(fd, wwwroot, sizeof(wwwroot));
|
|
cfs_close(fd);
|
|
if(rd != -1) wwwrootlen = rd;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/* URL to filename conversion
|
|
*
|
|
* prepends wwwroot prefix
|
|
* normalizes path by removing "/./"
|
|
* interprets "/../" and calculates path accordingly
|
|
* resulting path is always absolute
|
|
* replaces "%AB" notation with characters
|
|
* strips "#fragment" and "?query" from end
|
|
* replaces multiple slashes with a single one
|
|
* rejects non-ASCII characters
|
|
*
|
|
* MAXLEN is including trailing zero!
|
|
* input and output is ASCII
|
|
*/
|
|
void
|
|
urlconv_tofilename(char *dest, char *source, unsigned char maxlen)
|
|
{
|
|
static unsigned char len;
|
|
static unsigned char c, hex1;
|
|
static unsigned char *from, *to;
|
|
|
|
*dest = ISO_slash;
|
|
strncpy(dest + 1, wwwroot, wwwrootlen);
|
|
len = 0;
|
|
from = (unsigned char *)source; to = (unsigned char *)dest + wwwrootlen;
|
|
maxlen -= 2 + wwwrootlen;
|
|
do {
|
|
c = *(from++);
|
|
switch(c) {
|
|
case ISO_number:
|
|
case ISO_question:
|
|
c = 0;
|
|
break;
|
|
case ISO_percent:
|
|
c = 0;
|
|
hex1 = (*(from++) | 0x20) ^ 0x30; // ascii only!
|
|
if(hex1 > 0x50 && hex1 < 0x57)
|
|
hex1 -= 0x47;
|
|
else
|
|
if(hex1 > 9)
|
|
break; // invalid hex
|
|
c = (*(from++) | 0x20) ^ 0x30; // ascii only!
|
|
if(c > 0x50 && c < 0x57)
|
|
c -= 0x47;
|
|
else
|
|
if(c > 9)
|
|
break; // invalid hex
|
|
c |= hex1 << 4;
|
|
}
|
|
|
|
if(c < 0x20 || c > 0x7e)
|
|
c = 0; // non ascii?!
|
|
if(len >= maxlen)
|
|
c = 0; // too long?
|
|
|
|
if(c == ISO_slash || !c) {
|
|
switch(*to) {
|
|
case ISO_slash:
|
|
continue; // no repeated slash
|
|
case ISO_period:
|
|
switch(to[-1]) {
|
|
case ISO_slash: // handle "./"
|
|
--to; --len;
|
|
continue;
|
|
case ISO_period:
|
|
if(to[-2] == ISO_slash) {
|
|
to -= 2; len -= 2;
|
|
if(len) {
|
|
do {
|
|
--to; --len;
|
|
} while(*to != ISO_slash);
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(c) {
|
|
++to; ++len;
|
|
*to = c;
|
|
}
|
|
} while(c);
|
|
if(*to == ISO_slash && (len + sizeof(http_index_htm) - 3) < maxlen) {
|
|
strcpy((char *)to, http_index_htm); // add index.htm
|
|
} else {
|
|
++to;
|
|
*to = 0;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|