/* * 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. * * $Id: httpd-cgi.c,v 1.9 2010/12/02 15:37:13 dak664 Exp $ * */ /* * 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 #include #include "contiki-net.h" #include "httpd.h" #include "httpd-cgi.h" #include "httpd-fs.h" #include "httpd-fsdata.h" #include "lib/petsciiconv.h" #include "sensors.h" #define DEBUGLOGIC 0 //See httpd.c, if 1 must also set it there! #if DEBUGLOGIC #define uip_mss(...) 512 #define uip_appdata TCPBUF extern char TCPBUF[512]; #endif /* RADIOSTATS must also be set in clock.c and the radio driver */ #if RF230BB #define RADIOSTATS 1 #endif static struct httpd_cgi_call *calls = NULL; /*cgi function names*/ #if HTTPD_FS_STATISTICS static const char file_name[] HTTPD_STRING_ATTR = "file-stats"; #endif static const char tcp_name[] HTTPD_STRING_ATTR = "tcp-connections"; static const char proc_name[] HTTPD_STRING_ATTR = "processes"; static const char sensor_name[] HTTPD_STRING_ATTR = "sensors"; 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"; /*Process states for processes cgi*/ static const char closed[] HTTPD_STRING_ATTR = "CLOSED"; static const char syn_rcvd[] HTTPD_STRING_ATTR = "SYN-RCVD"; static const char syn_sent[] HTTPD_STRING_ATTR = "SYN-SENT"; static const char established[] HTTPD_STRING_ATTR = "ESTABLISHED"; static const char fin_wait_1[] HTTPD_STRING_ATTR = "FIN-WAIT-1"; static const char fin_wait_2[] HTTPD_STRING_ATTR = "FIN-WAIT-2"; static const char closing[] HTTPD_STRING_ATTR = "CLOSING"; static const char time_wait[] HTTPD_STRING_ATTR = "TIME-WAIT"; static const char last_ack[] HTTPD_STRING_ATTR = "LAST-ACK"; static const char none[] HTTPD_STRING_ATTR = "NONE"; static const char running[] HTTPD_STRING_ATTR = "RUNNING"; static const char called[] HTTPD_STRING_ATTR = "CALLED"; static const char *states[] = { closed, syn_rcvd, syn_sent, established, fin_wait_1, fin_wait_2, closing, time_wait, last_ack, none, running, called}; static char sensor_temperature[12]="Not Enabled"; static char sensor_extvoltage[12]="Not Enabled"; static unsigned long last_tempupdate,last_extvoltageupdate; extern unsigned long seconds; #if RADIOSTATS extern unsigned long radioontime; extern uint8_t RF230_radio_on, RF230_rsigsi; extern uint16_t RF230_sendpackets,RF230_receivepackets,RF230_sendfail,RF230_receivefail; #endif void web_set_temp(char *s) { strcpy(sensor_temperature, s); last_tempupdate=seconds; } void web_set_voltage(char *s) { strcpy(sensor_extvoltage, s); last_extvoltageupdate=seconds; } /*---------------------------------------------------------------------------*/ 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(httpd_strncmp(name, f->name, httpd_strlen(f->name)) == 0) { return f->function; } } return nullfunction; } #if HTTPD_FS_STATISTICS static char *thisfilename; /*---------------------------------------------------------------------------*/ static unsigned short generate_file_stats(void *arg) { static const char httpd_cgi_filestat1[] HTTPD_STRING_ATTR = "



This page has been sent %u times"; static const char httpd_cgi_filestat2[] HTTPD_STRING_ATTR = "%s%d"; static const char httpd_cgi_filestat3[] HTTPD_STRING_ATTR = "%5u"; char tmp[20]; struct httpd_fsdata_file_noconst *f,fram; u16_t i; unsigned short numprinted; /* Transfer arg from whichever flash that contains the html file to RAM */ httpd_fs_cpy(&tmp, (char *)arg, 20); /* Count for this page, with common page footer */ if (tmp[0]=='.') { numprinted=httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_filestat1, httpd_fs_open(thisfilename, 0)); /* Count for all files */ /* Note buffer will overflow if there are too many files! */ } else if (tmp[0]=='*') { i=0;numprinted=0; for(f = (struct httpd_fsdata_file_noconst *)httpd_fs_get_root(); f != NULL; f = (struct httpd_fsdata_file_noconst *)fram.next) { /* Get the linked list file entry into RAM from from wherever it is*/ httpd_memcpy(&fram,f,sizeof(fram)); /* Get the file name from whatever memory it is in */ httpd_fs_cpy(&tmp, fram.name, sizeof(tmp)); #if HTTPD_FS_STATISTICS==1 numprinted+=httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_filestat2, tmp, tmp, f->count); #elif HTTPD_FS_STATISTICS==2 numprinted+=httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_filestat2, tmp, tmp, httpd_filecount[i]); #endif i++; } /* Count for specified file */ } else { numprinted=httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_filestat3, httpd_fs_open(tmp, 0)); } #if DEBUGLOGIC return 0; #endif return numprinted; } /*---------------------------------------------------------------------------*/ static PT_THREAD(file_stats(struct httpd_state *s, char *ptr)) { PSOCK_BEGIN(&s->sout); thisfilename=&s->filename[0]; //temporary way to pass filename to generate_file_stats PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, (void *) ptr); PSOCK_END(&s->sout); } #endif /*HTTPD_FS_STATISTICS*/ /*---------------------------------------------------------------------------*/ static unsigned short make_tcp_stats(void *arg) { static const char httpd_cgi_tcpstat1[] HTTPD_STRING_ATTR = "%d"; static const char httpd_cgi_tcpstat2[] HTTPD_STRING_ATTR = "-%u%s%u%u%c %c\r\n"; struct uip_conn *conn; struct httpd_state *s = (struct httpd_state *)arg; char tstate[20]; uint16_t numprinted; conn = &uip_conns[s->u.count]; numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_tcpstat1, uip_htons(conn->lport)); numprinted += httpd_cgi_sprint_ip6(conn->ripaddr, uip_appdata + numprinted); httpd_strcpy(tstate,states[conn->tcpstateflags & UIP_TS_MASK]); numprinted += httpd_snprintf((char *)uip_appdata + numprinted, uip_mss() - numprinted, httpd_cgi_tcpstat2, uip_htons(conn->rport), tstate, conn->nrtx, conn->timer, (uip_outstanding(conn))? '*':' ', (uip_stopped(conn))? '!':' '); return numprinted; } /*---------------------------------------------------------------------------*/ 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 make_processes(void *p) { static const char httpd_cgi_proc[] HTTPD_STRING_ATTR = "%p%s%p%s\r\n"; char name[40],tstate[20]; strncpy(name, ((struct process *)p)->name, 40); petsciiconv_toascii(name, 40); httpd_strcpy(tstate,states[9 + ((struct process *)p)->state]); return httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_proc, p, name, *(char *)(&(((struct process *)p)->thread)), tstate); } /*---------------------------------------------------------------------------*/ 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); } /*---------------------------------------------------------------------------*/ static const char httpd_cgi_addrh[] HTTPD_STRING_ATTR = ""; static const char httpd_cgi_addrf[] HTTPD_STRING_ATTR = "[Room for %u more]"; static const char httpd_cgi_addrb[] HTTPD_STRING_ATTR = "
"; static const char httpd_cgi_addrn[] HTTPD_STRING_ATTR = "(none)
"; extern uip_ds6_nbr_t uip_ds6_nbr_cache[]; extern uip_ds6_route_t uip_ds6_routing_table[]; extern uip_ds6_netif_t uip_ds6_if; #include "rpl.h" 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; isout); 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); for (i=0; isout); 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
"; static const char httpd_cgi_rtes3[] HTTPD_STRING_ATTR = ")
"; uint8_t i,j=0; uint16_t numprinted; numprinted = httpd_snprintf((char *)uip_appdata, uip_mss(),httpd_cgi_addrh); for (i=0; isout); PSOCK_GENERATOR_SEND(&s->sout, make_routes, s->u.ptr); PSOCK_END(&s->sout); } /*---------------------------------------------------------------------------*/ static unsigned short generate_sensor_readings(void *arg) { uint16_t numprinted; uint16_t h,m,s; static const char httpd_cgi_sensor0[] HTTPD_STRING_ATTR = "[Updated %d seconds ago]

"; static const char httpd_cgi_sensor1[] HTTPD_STRING_ATTR = "Temperature: %s
"; static const char httpd_cgi_sensor2[] HTTPD_STRING_ATTR = "Voltage: %s
"; static const char httpd_cgi_sensor3[] HTTPD_STRING_ATTR = "Up time: %02d:%02d:%02d
"; numprinted=0; if (last_tempupdate) { numprinted =httpd_snprintf((char *)uip_appdata, uip_mss(), httpd_cgi_sensor0,seconds-last_tempupdate); } numprinted+=httpd_snprintf((char *)uip_appdata+numprinted, uip_mss()-numprinted, httpd_cgi_sensor1, sensor_temperature); #if 0 //Measuring AVcc might be useful to check on battery condition but on ext power it's always 3v3 ADMUX =0x1E; //Select AREF as reference, measure 1.1 volt bandgap reference. //ADMUX =0x5E; //Select AVCC as reference, measure 1.1 volt bandgap reference. ADCSRA=0x07; //Enable ADC, not free running, interrupt disabled, clock divider 128 (62 KHz@ 8 MHz) ADCSRA|=1<sout); PSOCK_GENERATOR_SEND(&s->sout, generate_sensor_readings, s); #if RADIOSTATS PSOCK_GENERATOR_SEND(&s->sout, generate_radio_stats, s); #endif PSOCK_END(&s->sout); } /*---------------------------------------------------------------------------*/ 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 HTTPD_FS_STATISTICS HTTPD_CGI_CALL( file, file_name, file_stats); #endif HTTPD_CGI_CALL( tcp, tcp_name, tcp_stats ); HTTPD_CGI_CALL( proc, proc_name, processes ); HTTPD_CGI_CALL( adrs, adrs_name, addresses ); HTTPD_CGI_CALL( nbrs, nbrs_name, neighbors ); HTTPD_CGI_CALL( rtes, rtes_name, routes ); HTTPD_CGI_CALL(sensors, sensor_name, sensor_readings); void httpd_cgi_init(void) { #if HTTPD_FS_STATISTICS httpd_cgi_add( &file); #endif httpd_cgi_add( &tcp); httpd_cgi_add( &proc); httpd_cgi_add( &adrs); httpd_cgi_add( &nbrs); httpd_cgi_add( &rtes); httpd_cgi_add(&sensors); } /*---------------------------------------------------------------------------*/ uint8_t httpd_cgi_sprint_ip6(uip_ip6addr_t addr, char * result) { unsigned char zerocnt = 0; unsigned char numprinted = 0; char * starting = result; unsigned char i = 0; while (numprinted < 8) { //Address is zero, have we used our ability to //replace a bunch with : yet? if ((addr.u16[i] == 0) && (zerocnt == 0)) { //How mant zeros? zerocnt = 0; while(addr.u16[zerocnt + i] == 0) zerocnt++; //just one, don't waste our zeros... if (zerocnt == 1) { *result++ = '0'; numprinted++; break; } //Cool - can replace a bunch of zeros i += zerocnt; numprinted += zerocnt; } //Normal address, just print it else { result += sprintf(result, "%x", (unsigned int)(uip_ntohs(addr.u16[i]))); i++; numprinted++; } //Don't print : on last one if (numprinted != 8) *result++ = ':'; } return (result - starting); }