368 lines
12 KiB
C
368 lines
12 KiB
C
/*
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* Copyright (c) 2001, 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. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: httpd-cgi.c,v 1.4 2009/07/24 15:41:52 dak664 Exp $
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*
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*/
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/*
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* This file includes functions that are called by the web server
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* scripts. The functions takes no argument, and the return value is
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* interpreted as follows. A zero means that the function did not
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* complete and should be invoked for the next packet as well. A
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* non-zero value indicates that the function has completed and that
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* the web server should move along to the next script line.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "contiki-net.h"
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#include "httpd.h"
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#include "httpd-cgi.h"
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#include "httpd-fs.h"
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#include "httpd-fsdata.h"
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#include "lib/petsciiconv.h"
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#include "sensors.h"
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#define DEBUGLOGIC 0 //See httpd.c, if 1 must also set it there!
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#if DEBUGLOGIC
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#define uip_mss(...) 512
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#define uip_appdata TCPBUF
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extern char TCPBUF[512];
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#endif
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static struct httpd_cgi_call *calls = NULL;
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/*cgi function names*/
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#if HTTPD_FS_STATISTICS
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static const char file_name[] HTTPD_STRING_ATTR = "file-stats";
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#endif
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static const char tcp_name[] HTTPD_STRING_ATTR = "tcp-connections";
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static const char proc_name[] HTTPD_STRING_ATTR = "processes";
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static const char sensor_name[] HTTPD_STRING_ATTR = "sensors";
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/*Process states for processes cgi*/
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static const char closed[] HTTPD_STRING_ATTR = "CLOSED";
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static const char syn_rcvd[] HTTPD_STRING_ATTR = "SYN-RCVD";
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static const char syn_sent[] HTTPD_STRING_ATTR = "SYN-SENT";
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static const char established[] HTTPD_STRING_ATTR = "ESTABLISHED";
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static const char fin_wait_1[] HTTPD_STRING_ATTR = "FIN-WAIT-1";
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static const char fin_wait_2[] HTTPD_STRING_ATTR = "FIN-WAIT-2";
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static const char closing[] HTTPD_STRING_ATTR = "CLOSING";
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static const char time_wait[] HTTPD_STRING_ATTR = "TIME-WAIT";
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static const char last_ack[] HTTPD_STRING_ATTR = "LAST-ACK";
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static const char none[] HTTPD_STRING_ATTR = "NONE";
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static const char running[] HTTPD_STRING_ATTR = "RUNNING";
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static const char called[] HTTPD_STRING_ATTR = "CALLED";
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static const char *states[] = {
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closed,
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syn_rcvd,
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syn_sent,
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established,
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fin_wait_1,
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fin_wait_2,
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closing,
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time_wait,
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last_ack,
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none,
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running,
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called};
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char sensor_temperature[12];
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uint8_t sprint_ip6(uip_ip6addr_t addr, char * result);
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void
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web_set_temp(char *s)
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{
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strcpy(sensor_temperature, s);
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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httpd_cgifunction
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httpd_cgi(char *name)
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{
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struct httpd_cgi_call *f;
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/* Find the matching name in the table, return the function. */
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for(f = calls; f != NULL; f = f->next) {
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if(httpd_strncmp(name, f->name, httpd_strlen(f->name)) == 0) {
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return f->function;
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}
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}
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return nullfunction;
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}
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#if HTTPD_FS_STATISTICS
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static char *thisfilename;
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/*---------------------------------------------------------------------------*/
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static unsigned short
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generate_file_stats(void *arg)
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{
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static const char httpd_cgi_filestat1[] HTTPD_STRING_ATTR = "<p class=right><br><br><i>This page has been sent %u times</i></div></body></html>";
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static const char httpd_cgi_filestat2[] HTTPD_STRING_ATTR = "<tr><td><a href=\"%s\">%s</a></td><td>%d</td>";
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static const char httpd_cgi_filestat3[] HTTPD_STRING_ATTR = "%5u";
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char tmp[20];
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struct httpd_fsdata_file_noconst *f,fram;
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u16_t i;
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unsigned short numprinted;
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/* Transfer arg from whichever flash that contains the html file to RAM */
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httpd_fs_cpy(&tmp, (char *)arg, 20);
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/* Count for this page, with common page footer */
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if (tmp[0]=='.') {
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numprinted=httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_filestat1, httpd_fs_open(thisfilename, 0));
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/* Count for all files */
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/* Note buffer will overflow if there are too many files! */
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} else if (tmp[0]=='*') {
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i=0;numprinted=0;
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for(f = (struct httpd_fsdata_file_noconst *)httpd_fs_get_root();
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f != NULL;
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f = (struct httpd_fsdata_file_noconst *)fram.next) {
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/* Get the linked list file entry into RAM from from wherever it is*/
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httpd_memcpy(&fram,f,sizeof(fram));
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/* Get the file name from whatever memory it is in */
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httpd_fs_cpy(&tmp, fram.name, sizeof(tmp));
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#if HTTPD_FS_STATISTICS==1
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numprinted+=httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_filestat2, tmp, tmp, f->count);
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#elif HTTPD_FS_STATISTICS==2
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numprinted+=httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_filestat2, tmp, tmp, httpd_filecount[i]);
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#endif
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i++;
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}
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/* Count for specified file */
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} else {
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numprinted=httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_filestat3, httpd_fs_open(tmp, 0));
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}
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#if DEBUGLOGIC
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return 0;
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#endif
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return numprinted;
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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thisfilename=&s->filename[0]; //temporary way to pass filename to generate_file_stats
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PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, (void *) ptr);
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PSOCK_END(&s->sout);
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}
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#endif /*HTTPD_FS_STATISTICS*/
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/*---------------------------------------------------------------------------*/
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static unsigned short
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make_tcp_stats(void *arg)
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{
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static const char httpd_cgi_tcpstat1[] HTTPD_STRING_ATTR = "<tr align=\"center\"><td>%d</td><td>";
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static const char httpd_cgi_tcpstat2[] HTTPD_STRING_ATTR = "-%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n";
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struct uip_conn *conn;
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struct httpd_state *s = (struct httpd_state *)arg;
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char tstate[20];
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uint16_t numprinted;
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conn = &uip_conns[s->u.count];
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numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_tcpstat1, htons(conn->lport));
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numprinted += sprint_ip6(conn->ripaddr, uip_appdata + numprinted);
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httpd_strcpy(tstate,states[conn->tcpstateflags & UIP_TS_MASK]);
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numprinted += httpd_snprintf((char *)uip_appdata + numprinted, uip_mss() - numprinted,
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httpd_cgi_tcpstat2,
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htons(conn->rport),
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tstate,
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conn->nrtx,
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conn->timer,
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(uip_outstanding(conn))? '*':' ',
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(uip_stopped(conn))? '!':' ');
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return numprinted;
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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for(s->u.count = 0; s->u.count < UIP_CONNS; ++s->u.count) {
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if((uip_conns[s->u.count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
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PSOCK_GENERATOR_SEND(&s->sout, make_tcp_stats, s);
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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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static unsigned short
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make_processes(void *p)
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{
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static const char httpd_cgi_proc[] HTTPD_STRING_ATTR = "<tr align=\"center\"><td>%p</td><td>%s</td><td>%p</td><td>%s</td></tr>\r\n";
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char name[40],tstate[20];
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strncpy(name, ((struct process *)p)->name, 40);
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petsciiconv_toascii(name, 40);
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httpd_strcpy(tstate,states[9 + ((struct process *)p)->state]);
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return httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_proc, p, name,
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// *((char **)&(((struct process *)p)->thread)),
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*(char *)(&(((struct process *)p)->thread)),
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tstate);
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(processes(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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for(s->u.ptr = PROCESS_LIST(); s->u.ptr != NULL; s->u.ptr = ((struct process *)s->u.ptr)->next) {
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PSOCK_GENERATOR_SEND(&s->sout, make_processes, s->u.ptr);
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}
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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static unsigned short
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generate_sensor_readings(void *arg)
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{
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static const char httpd_cgi_sensor1[] HTTPD_STRING_ATTR = "<em>Temperature:</em> Not enabled\n";
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static const char httpd_cgi_sensor2[] HTTPD_STRING_ATTR = "<em>Temperature:</em> %s\n";
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if (!sensor_temperature[0]) return httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_sensor1);
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return httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_sensor2, sensor_temperature);
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}
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/*---------------------------------------------------------------------------*/
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static
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PT_THREAD(sensor_readings(struct httpd_state *s, char *ptr))
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{
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PSOCK_BEGIN(&s->sout);
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PSOCK_GENERATOR_SEND(&s->sout, generate_sensor_readings, s);
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PSOCK_END(&s->sout);
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}
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/*---------------------------------------------------------------------------*/
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void
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httpd_cgi_add(struct httpd_cgi_call *c)
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{
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struct httpd_cgi_call *l;
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c->next = NULL;
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if(calls == NULL) {
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calls = c;
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} else {
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for(l = calls; l->next != NULL; l = l->next);
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l->next = c;
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}
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}
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/*---------------------------------------------------------------------------*/
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#if HTTPD_FS_STATISTICS
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HTTPD_CGI_CALL( file, file_name, file_stats);
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#endif
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HTTPD_CGI_CALL( tcp, tcp_name, tcp_stats );
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HTTPD_CGI_CALL( proc, proc_name, processes );
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HTTPD_CGI_CALL(sensors, sensor_name, sensor_readings);
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void
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httpd_cgi_init(void)
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{
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#if HTTPD_FS_STATISTICS
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httpd_cgi_add( &file);
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#endif
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httpd_cgi_add( &tcp);
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httpd_cgi_add( &proc);
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httpd_cgi_add(&sensors);
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}
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/*---------------------------------------------------------------------------*/
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uint8_t sprint_ip6(uip_ip6addr_t addr, char * result)
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{
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unsigned char zerocnt = 0;
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unsigned char numprinted = 0;
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char * starting = result;
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unsigned char i = 0;
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while (numprinted < 8)
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{
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//Address is zero, have we used our ability to
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//replace a bunch with : yet?
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if ((addr.u16[i] == 0) && (zerocnt == 0))
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{
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//How mant zeros?
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zerocnt = 0;
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while(addr.u16[zerocnt + i] == 0)
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zerocnt++;
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//just one, don't waste our zeros...
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if (zerocnt == 1)
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{
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*result++ = '0';
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numprinted++;
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break;
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}
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//Cool - can replace a bunch of zeros
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i += zerocnt;
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numprinted += zerocnt;
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}
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//Normal address, just print it
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else
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{
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result += sprintf(result, "%x", (unsigned int)(ntohs(addr.u16[i])));
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i++;
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numprinted++;
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}
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//Don't print : on last one
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if (numprinted != 8)
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*result++ = ':';
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}
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return (result - starting);
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}
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