/* * 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 1.16 2010/10/19 18:29:03 adamdunkels 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 "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",*/ {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}; 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}; 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, 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); 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; conn = &uip_conns[s->u.count]; #if UIP_CONF_IPV6 char buf[48]; httpd_sprint_ip6(conn->ripaddr, buf); return snprintf((char *)uip_appdata, uip_mss(), "%d%s:%u%s%u%u%c %c\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(), "%d%u.%u.%u.%u:%u%s%u%u%c %c\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 /* UIP_CONF_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 make_processes(void *p) { char name[40]; strncpy(name, ((struct process *)p)->name, 40); petsciiconv_toascii(name, 40); return snprintf((char *)uip_appdata, uip_mss(), "%p%s%p%s\r\n", p, name, *((char **)&(((struct process *)p)->thread)), 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); } /*---------------------------------------------------------------------------*/ 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; } } /*---------------------------------------------------------------------------*/ HTTPD_CGI_CALL(file, file_name, file_stats); HTTPD_CGI_CALL(tcp, tcp_name, tcp_stats); HTTPD_CGI_CALL(proc, proc_name, processes); void httpd_cgi_init(void) { httpd_cgi_add(&file); httpd_cgi_add(&tcp); httpd_cgi_add(&proc); } /*---------------------------------------------------------------------------*/