contiki/apps/webserver/httpd-cgi.c

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/*
* Copyright (c) 2001, Adam Dunkels.
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
*
*
*/
/*
* This file includes functions that are called by the web server
* scripts. The functions takes no argument, and the return value is
* interpreted as follows. A zero means that the function did not
* complete and should be invoked for the next packet as well. A
* non-zero value indicates that the function has completed and that
* the web server should move along to the next script line.
*
*/
#include <stdio.h>
#include <string.h>
#include "contiki-net.h"
#include "httpd.h"
#include "httpd-cgi.h"
#include "httpd-fs.h"
#include "lib/petsciiconv.h"
static struct httpd_cgi_call *calls = NULL;
static const char closed[] = /* "CLOSED",*/
{0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
static const char syn_rcvd[] = /* "SYN-RCVD",*/
{0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
0x44, 0};
static const char syn_sent[] = /* "SYN-SENT",*/
{0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
0x54, 0};
static const char established[] = /* "ESTABLISHED",*/
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{0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49,
0x53, 0x48, 0x45, 0x44, 0};
static const char fin_wait_1[] = /* "FIN-WAIT-1",*/
{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
0x54, 0x2d, 0x31, 0};
static const char fin_wait_2[] = /* "FIN-WAIT-2",*/
{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
0x54, 0x2d, 0x32, 0};
static const char closing[] = /* "CLOSING",*/
{0x43, 0x4c, 0x4f, 0x53, 0x49,
0x4e, 0x47, 0};
static const char time_wait[] = /* "TIME-WAIT,"*/
{0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
0x49, 0x54, 0};
static const char last_ack[] = /* "LAST-ACK"*/
{0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
0x4b, 0};
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static const char none[] = /* "NONE"*/
{0x4e, 0x4f, 0x4e, 0x45, 0};
static const char running[] = /* "RUNNING"*/
{0x52, 0x55, 0x4e, 0x4e, 0x49, 0x4e, 0x47,
0};
static const char called[] = /* "CALLED"*/
{0x43, 0x41, 0x4c, 0x4c, 0x45, 0x44, 0};
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static const char file_name[] = /* "file-stats"*/
{0x66, 0x69, 0x6c, 0x65, 0x2d, 0x73, 0x74,
0x61, 0x74, 0x73, 0};
static const char tcp_name[] = /* "tcp-connections"*/
{0x74, 0x63, 0x70, 0x2d, 0x63, 0x6f, 0x6e,
0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e,
0x73, 0};
static const char proc_name[] = /* "processes"*/
{0x70, 0x72, 0x6f, 0x63, 0x65, 0x73, 0x73,
0x65, 0x73, 0};
static const char *states[] = {
closed,
syn_rcvd,
syn_sent,
established,
fin_wait_1,
fin_wait_2,
closing,
time_wait,
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last_ack,
none,
running,
called};
/*---------------------------------------------------------------------------*/
static
PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
httpd_cgifunction
httpd_cgi(char *name)
{
struct httpd_cgi_call *f;
/* Find the matching name in the table, return the function. */
for(f = calls; f != NULL; f = f->next) {
if(strncmp(f->name, name, strlen(f->name)) == 0) {
return f->function;
}
}
return nullfunction;
}
/*---------------------------------------------------------------------------*/
static unsigned short
generate_file_stats(void *arg)
{
char *f = (char *)arg;
return snprintf((char *)uip_appdata, uip_mss(), "%5u", httpd_fs_count(f));
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
Support for z80(sdcc) port. In order to support, some core modules are modified as follows: core/sys/dsc.h - If CTK_CONF_ICONS is diabled, the whole icon-related code is disabled. - DSC_HEADER is changed to remove extra semicolon. core/sys/process.h - process_data_t is expressed by void* in signatures (known bug on sdcc). core/sys/autostart.h - autostart_processes is changed to remove extra semicolon. core/sys/cc.h - CC_CONF_ASSIGN_AGGREGATE is introduced. - CC_CONF_INC_CAST_POINTER is introduced, a workaround of a kind of sdcc bug for an increment. core/net/hc.c core/net/uip_arp.c core/net/uaodv.c - Aggregation assignments are changed to uip_ipaddr_copy. core/net/psock.c core/net/uipbuf.c core/net/dhcpc.c apps/shell/shell.c core/ctk/vnc-server.c core/ctk/vnc-out.c - "register" keyword in a signature cannot be used in sdcc, CC_REGISTER_ARG is used instead. core/net/uip-over-mesh.c - An extra semicolon is removed. apps/dhcp/dhcp-dsc.c apps/shell/shell-dsc. apps/ftp/ftp-dsc.c apps/process-list/process-list-dsc.c apps/email/email-dsc.c apps/webserver/webserver-dsc.c apps/vnc/vnc-dsc.c apps/vnc/vnc-viewer.h apps/webbrowser/www-dsc.c apps/about/about-dsc.c apps/irc/irc-dsc.c apps/telnet/telnet-dsc.c apps/telnetd/telnetd-dsc.c apps/netconf/netconf-dsc.c apps/directory/directory-dsc.c pps/calc/calc-dsc.c - Modify an extern type to a real declaration, which is static to prevent a compile error. core/net/mac/xmac.c - Variables cannot be defined in a head of block on sdcc. core/ctk/ctk.h core/ctk/ctk.c apps/program-handler/program-handler.c - If CTK_CONF_ICONS is diabled, the whole icon-related code is disabled. Makefile.include - Add a set of configuration for an assembler. - $(CLEAN) variable is introduced for customized cleanup. apps/process-list/process-list.c - PROCESSLIST_CONF_HEIGHT is introduced to address smaller screen size. core/lib/ctk-filedialog.c - FILES_CONF_HEIGHT is introduced to address smaller screen size. - "register" keyword in a signature cannot be used in sdcc, CC_REGISTER_ARG is used instead. apps/vnc/vnc-viewer.c - A cast is added to prevent a compile error. - "register" keyword in a signature cannot be used in sdcc, CC_REGISTER_ARG is used instead. apps/webbrowser/webclient.c - CC_CONF_INC_CAST_POINTER is introduced, a workaround of a kind of sdcc bug for an increment. core/loader/elfloader.c - A cast is added to prevent a compile error. core/net/rime/rimeaddr.c - An initialization is added to prevent a compile error. core/net/rime/rudolph0.c - NULL is changed to 0, because NULL causes a compile error. core/net/rime/route-discovery.c - Add an argument to match the definition of nf_callbacks. cpu/z80/strcasecmp.h cpu/z80/strcasecmp.c cpu/z80/contiki-sdcc-conf.h cpu/z80/mtarch.c cpu/z80/mtarch.h cpu/z80/Makefile.z80 - New files to make compilation availble on sdcc. - Added support for multithreading.
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PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, (void *) (strchr(ptr, ' ') + 1));
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
make_tcp_stats(void *arg)
{
struct uip_conn *conn;
struct httpd_state *s = (struct httpd_state *)arg;
#if NETSTACK_CONF_WITH_IPV6
char buf[48];
#endif
conn = &uip_conns[s->u.count];
#if NETSTACK_CONF_WITH_IPV6
httpd_sprint_ip6(conn->ripaddr, buf);
return snprintf((char *)uip_appdata, uip_mss(),
"<tr align=\"center\"><td>%d</td><td>%s:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
uip_htons(conn->lport),
buf,
uip_htons(conn->rport),
states[conn->tcpstateflags & UIP_TS_MASK],
conn->nrtx,
conn->timer,
(uip_outstanding(conn))? '*':' ',
(uip_stopped(conn))? '!':' ');
#else
return snprintf((char *)uip_appdata, uip_mss(),
"<tr align=\"center\"><td>%d</td><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
uip_htons(conn->lport),
conn->ripaddr.u8[0],
conn->ripaddr.u8[1],
conn->ripaddr.u8[2],
conn->ripaddr.u8[3],
uip_htons(conn->rport),
states[conn->tcpstateflags & UIP_TS_MASK],
conn->nrtx,
conn->timer,
(uip_outstanding(conn))? '*':' ',
(uip_stopped(conn))? '!':' ');
#endif /* NETSTACK_CONF_WITH_IPV6 */
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
for(s->u.count = 0; s->u.count < UIP_CONNS; ++s->u.count) {
if((uip_conns[s->u.count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
PSOCK_GENERATOR_SEND(&s->sout, make_tcp_stats, s);
}
}
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
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make_processes(void *p)
{
char name[40];
strncpy(name, PROCESS_NAME_STRING((struct process *)p), 40);
petsciiconv_toascii(name, 40);
return snprintf((char *)uip_appdata, uip_mss(),
"<tr align=\"center\"><td>%p</td><td>%s</td><td>%p</td><td>%s</td></tr>\r\n",
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p, name,
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*((char **)&(((struct process *)p)->thread)),
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states[9 + ((struct process *)p)->state]);
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(processes(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
for(s->u.ptr = PROCESS_LIST(); s->u.ptr != NULL; s->u.ptr = ((struct process *)s->u.ptr)->next) {
PSOCK_GENERATOR_SEND(&s->sout, make_processes, s->u.ptr);
}
PSOCK_END(&s->sout);
}
#if WEBSERVER_CONF_STATUSPAGE && NETSTACK_CONF_WITH_IPV6
/* These cgi's are invoked by the status.shtml page in /apps/webserver/httpd-fs.
* To keep the webserver build small that 160 byte page is not present in the
* default httpd-fsdata.c file. Run the PERL script /../../tools/makefsdata from the
* /apps/webserver/ directory to include it. Delete status.shtml before running
* the script if you want to exclude it again.
* NB: Webserver builds on all platforms will use the current httpd-fsdata.c file. The added 160 bytes
* could overflow memory on the smaller platforms.
*/
/*---------------------------------------------------------------------------*/
#define HTTPD_STRING_ATTR
#define httpd_snprintf snprintf
#define httpd_cgi_sprint_ip6 httpd_sprint_ip6
static const char httpd_cgi_addrh[] HTTPD_STRING_ATTR = "<code>";
static const char httpd_cgi_addrf[] HTTPD_STRING_ATTR = "</code>[Room for %u more]";
static const char httpd_cgi_addrb[] HTTPD_STRING_ATTR = "<br>";
static const char httpd_cgi_addrn[] HTTPD_STRING_ATTR = "(none)<br>";
extern uip_ds6_netif_t uip_ds6_if;
static unsigned short
make_addresses(void *p)
{
uint8_t i,j=0;
uint16_t numprinted;
numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh);
for (i=0; i<UIP_DS6_ADDR_NB;i++) {
if (uip_ds6_if.addr_list[i].isused) {
j++;
numprinted += httpd_cgi_sprint_ip6(uip_ds6_if.addr_list[i].ipaddr, uip_appdata + numprinted);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrb);
}
}
//if (j==0) numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrn);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrf, UIP_DS6_ADDR_NB-j);
return numprinted;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(addresses(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_GENERATOR_SEND(&s->sout, make_addresses, s->u.ptr);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
make_neighbors(void *p)
{
uint8_t i,j=0;
uint16_t numprinted;
numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh);
uip_ds6_nbr_t *nbr;
for(nbr = nbr_table_head(ds6_neighbors);
nbr != NULL;
nbr = nbr_table_next(ds6_neighbors, nbr)) {
j++;
numprinted += httpd_cgi_sprint_ip6(nbr->ipaddr, uip_appdata + numprinted);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrb);
}
//if (j==0) numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrn);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrf,NBR_TABLE_MAX_NEIGHBORS-j);
return numprinted;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(neighbors(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_GENERATOR_SEND(&s->sout, make_neighbors, s->u.ptr);
PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
make_routes(void *p)
{
static const char httpd_cgi_rtes1[] HTTPD_STRING_ATTR = "(%u (via ";
static const char httpd_cgi_rtes2[] HTTPD_STRING_ATTR = ") %lus<br>";
static const char httpd_cgi_rtes3[] HTTPD_STRING_ATTR = ")<br>";
uint8_t i,j=0;
uint16_t numprinted;
uip_ds6_route_t *r;
numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh);
for(r = uip_ds6_route_head();
r != NULL;
r = uip_ds6_route_next(r)) {
j++;
numprinted += httpd_cgi_sprint_ip6(r->ipaddr, uip_appdata + numprinted);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_rtes1, r->length);
numprinted += httpd_cgi_sprint_ip6(uip_ds6_route_nexthop(r), uip_appdata + numprinted);
if(r->state.lifetime < 3600) {
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_rtes2, r->state.lifetime);
} else {
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_rtes3);
}
}
if (j==0) numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrn);
numprinted += httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_addrf,UIP_DS6_ROUTE_NB-j);
return numprinted;
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(routes(struct httpd_state *s, char *ptr))
{
PSOCK_BEGIN(&s->sout);
PSOCK_GENERATOR_SEND(&s->sout, make_routes, s->u.ptr);
PSOCK_END(&s->sout);
}
#endif /* WEBSERVER_CONF_STATUSPAGE */
/*---------------------------------------------------------------------------*/
void
httpd_cgi_add(struct httpd_cgi_call *c)
{
struct httpd_cgi_call *l;
c->next = NULL;
if(calls == NULL) {
calls = c;
} else {
for(l = calls; l->next != NULL; l = l->next);
l->next = c;
}
}
/*---------------------------------------------------------------------------*/
#if WEBSERVER_CONF_STATUSPAGE && NETSTACK_CONF_WITH_IPV6
static const char adrs_name[] HTTPD_STRING_ATTR = "addresses";
static const char nbrs_name[] HTTPD_STRING_ATTR = "neighbors";
static const char rtes_name[] HTTPD_STRING_ATTR = "routes";
#endif
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HTTPD_CGI_CALL(file, file_name, file_stats);
HTTPD_CGI_CALL(tcp, tcp_name, tcp_stats);
HTTPD_CGI_CALL(proc, proc_name, processes);
#if WEBSERVER_CONF_STATUSPAGE && NETSTACK_CONF_WITH_IPV6
HTTPD_CGI_CALL(adrs, adrs_name, addresses);
HTTPD_CGI_CALL(nbrs, nbrs_name, neighbors);
HTTPD_CGI_CALL(rtes, rtes_name, routes);
#endif
void
httpd_cgi_init(void)
{
httpd_cgi_add(&file);
httpd_cgi_add(&tcp);
httpd_cgi_add(&proc);
#if WEBSERVER_CONF_STATUSPAGE && NETSTACK_CONF_WITH_IPV6
httpd_cgi_add(&adrs);
httpd_cgi_add(&nbrs);
httpd_cgi_add(&rtes);
#endif
}
/*---------------------------------------------------------------------------*/