525 lines
16 KiB
C
525 lines
16 KiB
C
/*
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* Copyright (c) 2004, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/* Configurable Contiki Webserver - see httpd.h */
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#include <string.h>
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#include <stdio.h>
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#include "contiki-net.h"
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#include "httpd.h"
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#include "webserver.h"
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#include "httpd-fs.h"
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#if WEBSERVER_CONF_CGI
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#include "httpd-cgi.h"
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#endif
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#include "lib/petsciiconv.h"
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#if COFFEE_FILES
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#include "cfs-coffee-arch.h"
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#endif
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#define DEBUG 0
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#if DEBUG
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#define PRINTD PRINTA
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#else
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#define PRINTD(...)
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#endif
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#define STATE_WAITING 0
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#define STATE_OUTPUT 1
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/* Allocate memory for the tcp connections */
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MEMB(conns, struct httpd_state, WEBSERVER_CONF_CONNS);
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#define ISO_tab 0x09
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#define ISO_nl 0x0a
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#define ISO_cr 0x0d
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#define ISO_space 0x20
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#define ISO_bang 0x21
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#define ISO_percent 0x25
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#define ISO_period 0x2e
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#define ISO_slash 0x2f
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#define ISO_colon 0x3a
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#define ISO_qmark 0x3f
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/*---------------------------------------------------------------------------*/
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static unsigned short
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generate(void *state)
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{
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struct httpd_state *s = (struct httpd_state *)state;
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if(s->file.len > uip_mss()) {
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s->len = uip_mss();
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} else {
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s->len = s->file.len;
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}
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httpd_fs_cpy(uip_appdata, s->file.data, s->len);
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return s->len;
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(send_file(struct httpd_state *s))
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{
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PSOCK_BEGIN(&s->sout);
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do {
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PSOCK_GENERATOR_SEND(&s->sout, generate, s);
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s->file.len -= s->len;
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s->file.data += s->len;
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} while(s->file.len > 0);
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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#if WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI
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static
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PT_THREAD(send_part_of_file(struct httpd_state *s))
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{
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PSOCK_BEGIN(&s->sout);
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static int oldfilelen, oldlen;
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static char * olddata;
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//Store stuff that gets clobbered...
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oldfilelen = s->file.len;
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oldlen = s->len;
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olddata = s->file.data;
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s->file.len = s->len;
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do {
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PSOCK_GENERATOR_SEND(&s->sout, generate, s);
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s->file.len -= s->len;
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s->file.data += s->len;
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} while(s->file.len > 0);
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s->len = oldlen;
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s->file.len = oldfilelen;
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s->file.data = olddata;
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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static void
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next_scriptstate(struct httpd_state *s)
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{
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char *p;
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/* Skip over any script parameters to the beginning of the next line */
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if((p = (char *)httpd_fs_strchr(s->scriptptr, ISO_nl)) != NULL) {
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p += 1;
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s->scriptlen -= (unsigned short)(p - s->scriptptr);
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s->scriptptr = p;
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} else {
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s->scriptlen = 0;
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}
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}
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/*---------------------------------------------------------------------------*/
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char *
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get_scriptname(char *dest, char *fromfile)
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{
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uint8_t i=0,skip=1;
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/* Extract a file or cgi name, trim leading spaces and replace termination with zero */
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/* Returns number of characters processed up to the next non-tab or space */
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do {
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dest[i]=httpd_fs_getchar(fromfile++);
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if (dest[i]==ISO_colon) {if (!skip) break;} //allow leading colons
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else if (dest[i]==ISO_tab ) {if (skip) continue;else break;}//skip leading tabs
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else if (dest[i]==ISO_space) {if (skip) continue;else break;}//skip leading spaces
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else if (dest[i]==ISO_nl ) break; //nl is preferred delimiter
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else if (dest[i]==ISO_cr ) break; //some editors insert cr
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else if (dest[i]==0 ) break; //files are terminated with null
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else skip=0;
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i++;
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} while (i<(MAX_SCRIPT_NAME_LENGTH+1));
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fromfile--;
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while ((dest[i]==ISO_space) || (dest[i]==ISO_tab)) dest[i]=httpd_fs_getchar(++fromfile);
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dest[i]=0;
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return (fromfile);
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(handle_script(struct httpd_state *s))
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{
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/* Note script includes will attach a leading : to the filename and a trailing zero */
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static char scriptname[MAX_SCRIPT_NAME_LENGTH+1],*pptr;
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static uint16_t filelength;
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PT_BEGIN(&s->scriptpt);
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filelength=s->file.len;
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while(s->file.len > 0) {
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/* Sanity check */
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if (s->file.len > filelength) break;
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/* Check if we should start executing a script, flagged by %! */
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if(httpd_fs_getchar(s->file.data) == ISO_percent &&
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httpd_fs_getchar(s->file.data + 1) == ISO_bang) {
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/* Extract name, if starts with colon include file else call cgi */
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s->scriptptr=get_scriptname(scriptname,s->file.data+2);
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s->scriptlen=s->file.len-(s->scriptptr-s->file.data);
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PRINTD("httpd: Handle script named %s\n",scriptname);
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if(scriptname[0] == ISO_colon) {
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#if WEBSERVER_CONF_INCLUDE
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if (httpd_fs_open(&scriptname[1], &s->file)) {
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PT_WAIT_THREAD(&s->scriptpt, send_file(s));
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}
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/*TODO dont print anything if file not found */
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#endif
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} else {
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#if WEBSERVER_CONF_CGI
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PT_WAIT_THREAD(&s->scriptpt,httpd_cgi(scriptname)(s, s->scriptptr));
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#endif
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}
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next_scriptstate(s);
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/* Reset the pointers and continue sending the current file. */
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s->file.data = s->scriptptr;
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s->file.len = s->scriptlen;
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} else {
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/* Send file up to the next potential script */
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if(s->file.len > uip_mss()) {
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s->len = uip_mss();
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} else {
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s->len = s->file.len;
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}
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if(httpd_fs_getchar(s->file.data) == ISO_percent) {
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pptr = (char *) httpd_fs_strchr(s->file.data + 1, ISO_percent);
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} else {
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pptr = (char *) httpd_fs_strchr(s->file.data, ISO_percent);
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}
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if(pptr != NULL && pptr != s->file.data) {
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s->len = (int)(pptr - s->file.data);
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if(s->len >= uip_mss()) {
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s->len = uip_mss();
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}
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}
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PRINTD("httpd: Sending %u bytes from 0x%04x\n",s->file.len,(unsigned int)s->file.data);
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PT_WAIT_THREAD(&s->scriptpt, send_part_of_file(s));
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s->file.data += s->len;
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s->file.len -= s->len;
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}
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}
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PT_END(&s->scriptpt);
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}
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#endif /* WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI */
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/*---------------------------------------------------------------------------*/
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const char httpd_http[] HTTPD_STRING_ATTR = "HTTP/1.0 ";
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const char httpd_server[] HTTPD_STRING_ATTR = "\r\nServer: Contiki/2.0 http://www.sics.se/contiki/\r\nConnection: close\r\n";
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static unsigned short
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generate_status(void *sstr)
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{
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uint8_t slen=httpd_strlen((char *)sstr);
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httpd_memcpy(uip_appdata, httpd_http, sizeof(httpd_http)-1);
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httpd_memcpy(uip_appdata+sizeof(httpd_http)-1, (char *)sstr, slen);
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slen+=sizeof(httpd_http)-1;
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httpd_memcpy(uip_appdata+slen, httpd_server, sizeof(httpd_server)-1);
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return slen+sizeof(httpd_server)-1;
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}
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/*---------------------------------------------------------------------------*/
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const char httpd_content[] HTTPD_STRING_ATTR = "Content-type: ";
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const char httpd_crlf[] HTTPD_STRING_ATTR = "\r\n\r\n";
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static unsigned short
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generate_header(void *hstr)
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{
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uint8_t slen=httpd_strlen((char *)hstr);
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httpd_memcpy(uip_appdata,httpd_content,sizeof(httpd_content)-1);
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httpd_memcpy(uip_appdata+sizeof(httpd_content)-1, (char *)hstr, slen);
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slen+=sizeof(httpd_content)-1;
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httpd_memcpy(uip_appdata+slen,httpd_crlf,sizeof(httpd_crlf)-1);
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return slen+4;
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}
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/*---------------------------------------------------------------------------*/
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const char httpd_mime_htm[] HTTPD_STRING_ATTR = "text/html";
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#if WEBSERVER_CONF_CSS
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const char httpd_mime_css[] HTTPD_STRING_ATTR = "text/css";
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#endif
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#if WEBSERVER_CONF_PNG
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const char httpd_mime_png[] HTTPD_STRING_ATTR = "image/png";
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#endif
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#if WEBSERVER_CONF_GIF
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const char httpd_mime_gif[] HTTPD_STRING_ATTR = "image/gif";
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#endif
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#if WEBSERVER_CONF_JPG
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const char httpd_mime_jpg[] HTTPD_STRING_ATTR = "image/jpeg";
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const char httpd_jpg [] HTTPD_STRING_ATTR = "jpg";
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#endif
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#if WEBSERVER_CONF_TXT
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const char httpd_mime_txt[] HTTPD_STRING_ATTR = "text/plain";
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#endif
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#if WEBSERVER_CONF_BIN
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const char httpd_mime_bin[] HTTPD_STRING_ATTR = "application/octet-stream";
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#endif
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#if WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI
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const char httpd_shtml [] HTTPD_STRING_ATTR = ".shtml";
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#endif
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static
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PT_THREAD(send_headers(struct httpd_state *s, const char *statushdr))
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{
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char *ptr;
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PSOCK_BEGIN(&s->sout);
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PSOCK_GENERATOR_SEND(&s->sout, generate_status, (char *)statushdr);
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ptr = strrchr(s->filename, ISO_period);
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if (httpd_strncmp("4", statushdr, 1)==0) { //404
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_htm );
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} else if(ptr == NULL) {
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#if WEBSERVER_CONF_BIN
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_bin );
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#else
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_htm );
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#endif
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} else {
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ptr++;
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#if WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI
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if(httpd_strncmp(ptr, &httpd_mime_htm[5],3)== 0 ||httpd_strncmp(ptr, &httpd_shtml[1], 4) == 0) {
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#else
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if(httpd_strncmp(ptr, &httpd_mime_htm[5],3)== 0) {
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#endif
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_htm );
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#if WEBSEVER_CONF_CSS
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} else if(httpd_strcmp(ptr, &httpd_mime_css[5]) == 0) {
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_css );
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#endif
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#if WEBSERVER_CONF_PNG
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} else if(httpd_strcmp(ptr, &httpd_mime_png[6]) == 0) {
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_png );
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#endif
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#if WEBSERVER_CONF_GIF
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} else if(httpd_strcmp(ptr, &httpd_mime_gif[6])== 0) {
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_gif );
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#endif
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#if WEBSERVER_CONF_JPG
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} else if(httpd_strcmp(ptr, httpd_mime_jpg) == 0) {
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_jpg );
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#endif
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#if WEBSERVER_CONF_TXT
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} else {
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PSOCK_GENERATOR_SEND(&s->sout, generate_header, &httpd_mime_txt);
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#endif
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}
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}
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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const char httpd_indexfn [] HTTPD_STRING_ATTR = "/index.html";
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#if WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI
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const char httpd_indexsfn [] HTTPD_STRING_ATTR = "/index.shtml";
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#endif
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const char httpd_404fn [] HTTPD_STRING_ATTR = "/404.html";
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const char httpd_404notf [] HTTPD_STRING_ATTR = "404 Not found";
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const char httpd_200ok [] HTTPD_STRING_ATTR = "200 OK";
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static
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PT_THREAD(handle_output(struct httpd_state *s))
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{
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char *ptr;
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PT_BEGIN(&s->outputpt);
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#if DEBUGLOGIC
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httpd_strcpy(s->filename,httpd_indexfn);
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#endif
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if(!httpd_fs_open(s->filename, &s->file)) {
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#if WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI
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/* If index.html not found try index.shtml */
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if (httpd_strcmp(s->filename,httpd_indexfn)==0) httpd_strcpy(s->filename,httpd_indexsfn);
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if (httpd_fs_open(s->filename, &s->file)) goto sendfile;
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#endif
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httpd_strcpy(s->filename, httpd_404fn);
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httpd_fs_open(s->filename, &s->file);
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PT_WAIT_THREAD(&s->outputpt, send_headers(s, httpd_404notf));
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PT_WAIT_THREAD(&s->outputpt, send_file(s));
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} else {
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sendfile:
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PT_WAIT_THREAD(&s->outputpt, send_headers(s, httpd_200ok));
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#if WEBSERVER_CONF_INCLUDE || WEBSERVER_CONF_CGI
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ptr = strchr(s->filename, ISO_period);
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if((ptr != NULL && httpd_strncmp(ptr, httpd_shtml, 6) == 0) || httpd_strcmp(s->filename,httpd_indexfn)==0) {
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PT_INIT(&s->scriptpt);
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PT_WAIT_THREAD(&s->outputpt, handle_script(s));
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} else {
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#else
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if (1)
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#endif
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PT_WAIT_THREAD(&s->outputpt, send_file(s));
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}
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}
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PSOCK_CLOSE(&s->sout);
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PT_END(&s->outputpt);
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}
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/*---------------------------------------------------------------------------*/
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#if WEBSERVER_CONF_PASSQUERY
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char httpd_query[WEBSERVER_CONF_PASSQUERY];
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#endif
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const char httpd_get[] HTTPD_STRING_ATTR = "GET ";
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const char httpd_ref[] HTTPD_STRING_ATTR = "Referer:";
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static
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PT_THREAD(handle_input(struct httpd_state *s))
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{
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PSOCK_BEGIN(&s->sin);
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PSOCK_READTO(&s->sin, ISO_space);
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if(httpd_strncmp(s->inputbuf, httpd_get, 4) != 0) {
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PSOCK_CLOSE_EXIT(&s->sin);
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}
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PSOCK_READTO(&s->sin, ISO_space);
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if(s->inputbuf[0] != ISO_slash) {
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PSOCK_CLOSE_EXIT(&s->sin);
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}
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if(s->inputbuf[1] == ISO_space) {
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httpd_strcpy(s->filename, httpd_indexfn);
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} else {
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uint8_t i;
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for (i=0;i<sizeof(s->filename)+1;i++) {
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if (i >= (PSOCK_DATALEN(&s->sin)-1)) break;
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if (s->inputbuf[i]==ISO_space) break;
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#if WEBSERVER_CONF_PASSQUERY
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/* Query string is left in the httpd_query buffer until zeroed by the application! */
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if (s->inputbuf[i]==ISO_qmark) {
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strncpy(httpd_query,&s->inputbuf[i+1],sizeof(httpd_query));
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break;
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}
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#endif
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s->filename[i]=s->inputbuf[i];
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}
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s->filename[i]=0;
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}
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#if WEBSERVER_CONF_LOG
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webserver_log_file(&uip_conn->ripaddr, s->filename);
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// webserver_log(httpd_query);
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#endif
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#if WEBSERVER_CONF_LOADTIME
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s->pagetime = clock_time();
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#endif
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s->state = STATE_OUTPUT;
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while(1) {
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PSOCK_READTO(&s->sin, ISO_nl);
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#if WEBSERVER_CONF_LOG && WEBSERVER_CONF_REFERER
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if(httpd_strncmp(s->inputbuf, httpd_ref, 8) == 0) {
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s->inputbuf[PSOCK_DATALEN(&s->sin) - 2] = 0;
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petsciiconv_topetscii(s->inputbuf, PSOCK_DATALEN(&s->sin) - 2);
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webserver_log(s->inputbuf);
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}
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#endif
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}
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PSOCK_END(&s->sin);
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}
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/*---------------------------------------------------------------------------*/
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static void
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handle_connection(struct httpd_state *s)
|
|
{
|
|
#if DEBUGLOGIC
|
|
handle_output(s);
|
|
#endif
|
|
handle_input(s);
|
|
if(s->state == STATE_OUTPUT) {
|
|
handle_output(s);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
httpd_appcall(void *state)
|
|
{
|
|
#if DEBUGLOGIC
|
|
struct httpd_state *s; //Enter here for debugging with output directed to TCPBUF
|
|
s = sg = (struct httpd_state *)memb_alloc(&conns);
|
|
if (1) {
|
|
#else
|
|
struct httpd_state *s = (struct httpd_state *)state;
|
|
if(uip_closed() || uip_aborted() || uip_timedout()) {
|
|
if(s != NULL) {
|
|
memb_free(&conns, s);
|
|
}
|
|
} else if(uip_connected()) {
|
|
s = (struct httpd_state *)memb_alloc(&conns);
|
|
if(s == NULL) {
|
|
uip_abort();
|
|
return;
|
|
}
|
|
#endif
|
|
tcp_markconn(uip_conn, s);
|
|
PSOCK_INIT(&s->sin, (uint8_t *)s->inputbuf, sizeof(s->inputbuf) - 1);
|
|
PSOCK_INIT(&s->sout, (uint8_t *)s->inputbuf, sizeof(s->inputbuf) - 1);
|
|
PT_INIT(&s->outputpt);
|
|
s->state = STATE_WAITING;
|
|
s->timer = 0;
|
|
#if WEBSERVER_CONF_AJAX
|
|
s->ajax_timeout = WEBSERVER_CONF_TIMEOUT;
|
|
#endif
|
|
handle_connection(s);
|
|
} else if(s != NULL) {
|
|
if(uip_poll()) {
|
|
++s->timer;
|
|
#if WEBSERVER_CONF_AJAX
|
|
if(s->timer >= s->ajax_timeout) {
|
|
#else
|
|
if(s->timer >= WEBSERVER_CONF_TIMEOUT) {
|
|
#endif
|
|
uip_abort();
|
|
memb_free(&conns, s);
|
|
}
|
|
} else {
|
|
s->timer = 0;
|
|
}
|
|
handle_connection(s);
|
|
} else {
|
|
uip_abort();
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
httpd_init(void)
|
|
{
|
|
tcp_listen(UIP_HTONS(80));
|
|
memb_init(&conns);
|
|
PRINTD(" sizof(struct httpd_state) = %d\n",sizeof(struct httpd_state));
|
|
PRINTA(" %d bytes used for httpd state storage\n",conns.size * conns.num);
|
|
#if WEBSERVER_CONF_CGI
|
|
httpd_cgi_init();
|
|
#endif
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|