struct timeval *tmr_timeout(struct timeval *nowP)
{
long msecs;
static struct timeval timeout;
msecs = tmr_mstimeout(nowP);
if (msecs == INFTIM)
return (struct timeval *) 0;
timeout.tv_sec = msecs / 1000L;
timeout.tv_usec = (msecs % 1000L) * 1000L;
return &timeout;
}
int thttpd_main(int argc, char **argv)
#endif
{
int num_ready;
int cnum;
FAR struct connect_s *conn;
FAR httpd_conn *hc;
httpd_sockaddr sa;
struct timeval tv;
#ifdef CONFIG_THTTPD_DIR
int ret;
#endif
nvdbg("THTTPD started\n");
/* Setup host address */
#ifdef CONFIG_NET_IPv6
# error "IPv6 support not yet implemented"
#else
sa.sin_family = AF_INET;
sa.sin_port = HTONS(CONFIG_THTTPD_PORT);
sa.sin_addr.s_addr = HTONL(CONFIG_THTTPD_IPADDR);
#endif
/* Initialize the fdwatch package to handle all of the configured
* socket descriptors
*/
fw = fdwatch_initialize(CONFIG_NSOCKET_DESCRIPTORS);
if (!fw)
{
ndbg("fdwatch initialization failure\n");
exit(1);
}
/* Switch directories again if requested */
#ifdef CONFIG_THTTPD_DATADIR
if (chdir(CONFIG_THTTPD_DATADIR) < 0)
{
ndbg("chdir to %s: %d\n", CONFIG_THTTPD_DATADIR, errno);
exit(1);
}
#endif
/* Initialize the timer package */
tmr_init();
/* Initialize the HTTP layer */
nvdbg("Calling httpd_initialize()\n");
hs = httpd_initialize(&sa);
if (!hs)
{
ndbg("httpd_initialize() failed\n");
exit(1);
}
/* Set up the occasional timer */
if (tmr_create(NULL, occasional, JunkClientData, CONFIG_THTTPD_OCCASIONAL_MSEC * 1000L, 1) == NULL)
{
ndbg("tmr_create(occasional) failed\n");
exit(1);
}
/* Set up the idle timer */
if (tmr_create(NULL, idle, JunkClientData, 5 * 1000L, 1) == NULL)
{
ndbg("tmr_create(idle) failed\n");
exit(1);
}
/* Initialize our connections table */
connects = NEW(struct connect_s, AVAILABLE_FDS);
if (connects == NULL)
{
ndbg("Out of memory allocating a struct connect_s\n");
exit(1);
}
for (cnum = 0; cnum < AVAILABLE_FDS; ++cnum)
{
connects[cnum].conn_state = CNST_FREE;
connects[cnum].next = &connects[cnum + 1];
connects[cnum].hc = NULL;
}
connects[AVAILABLE_FDS-1].next = NULL; /* End of link list */
free_connections = connects; /* Beginning of the link list */
if (hs != NULL)
{
if (hs->listen_fd != -1)
{
fdwatch_add_fd(fw, hs->listen_fd, NULL);
}
}
/* Main loop */
nvdbg("Entering the main loop\n");
(void)gettimeofday(&tv, NULL);
for (;;)
{
/* Do the fd watch */
num_ready = fdwatch(fw, tmr_mstimeout(&tv));
if (num_ready < 0)
{
if (errno == EINTR || errno == EAGAIN)
{
/* Not errors... try again */
continue;
}
ndbg("fdwatch failed: %d\n", errno);
exit(1);
}
(void)gettimeofday(&tv, NULL);
if (num_ready == 0)
{
/* No fd's are ready - run the timers */
tmr_run(&tv);
continue;
}
/* Is it a new connection? */
if (fdwatch_check_fd(fw, hs->listen_fd))
{
if (!handle_newconnect(&tv, hs->listen_fd))
{
/* Go around the loop and do another fdwatch, rather than
* dropping through and processing existing connections. New
* connections always get priority.
*/
continue;
}
}
/* Find the connections that need servicing */
while ((conn = (struct connect_s*)fdwatch_get_next_client_data(fw)) != (struct connect_s*)-1)
{
if (conn)
{
hc = conn->hc;
if (fdwatch_check_fd(fw, hc->conn_fd))
{
nvdbg("Handle conn_state %d\n", conn->conn_state);
switch (conn->conn_state)
{
case CNST_READING:
{
handle_read(conn, &tv);
/* If a GET request was received and a file is ready to
* be sent, then fall through to send the file.
*/
if (conn->conn_state != CNST_SENDING)
{
break;
}
}
case CNST_SENDING:
{
/* Send a file -- this really should be performed on a
* separate thread to keep the serve from locking up during
* the write.
*/
handle_send(conn, &tv);
}
break;
case CNST_LINGERING:
{
/* Linger close the connection */
handle_linger(conn, &tv);
}
break;
}
}
}
}
tmr_run(&tv);
}
/* The main loop terminated */
shut_down();
ndbg("Exiting\n");
exit(0);
}
int
thttpd_run(void)
{
char* cp;
struct passwd* pwd;
uid_t uid = 32767;
gid_t gid = 32767;
int num_ready;
int cnum;
connecttab* c;
httpd_conn* hc;
httpd_sockaddr sa4;
httpd_sockaddr sa6;
int gotv4, gotv6;
struct timeval tv;
cp = getenv( "GHTTPPORT" );
if ( cp )
port = atoi( cp );
if( port == 0 )
port = 9999;
/* Read zone info now, in case we chroot(). */
tzset();
/* Look up hostname now, in case we chroot(). */
lookup_hostname( &sa4, sizeof(sa4), &gotv4, &sa6, sizeof(sa6), &gotv6 );
if ( ! ( gotv4 || gotv6 ) )
{
memset(&sa4, 0, sizeof sa4);
gotv4 = 1;
}
/* Initialize the fdwatch package. Have to do this before chroot,
** if /dev/poll is used.
*/
max_connects = fdwatch_get_nfiles();
if ( max_connects < 0 )
{
return;
}
max_connects -= SPARE_FDS;
/* Set up to catch signals. */
#ifdef HAVE_SIGSET
(void) sigset( SIGPIPE, SIG_IGN ); /* get EPIPE instead */
#else /* HAVE_SIGSET */
(void) signal( SIGPIPE, SIG_IGN ); /* get EPIPE instead */
#endif /* HAVE_SIGSET */
/* Initialize the timer package. */
tmr_init();
/* Initialize the HTTP layer. Got to do this before giving up root,
** so that we can bind to a privileged port.
*/
hs = httpd_initialize(
hostname,
gotv4 ? &sa4 : (httpd_sockaddr*) 0, gotv6 ? &sa6 : (httpd_sockaddr*) 0,
port, cgi_pattern, cgi_limit, charset, p3p, max_age, "/", no_log,
no_symlink_check, do_vhost, do_global_passwd, url_pattern,
local_pattern, no_empty_referers );
if ( hs == (httpd_server*) 0 )
exit( 1 );
/* Set up the occasional timer. */
if ( tmr_create( (struct timeval*) 0, occasional, JunkClientData, OCCASIONAL_TIME * 1000L, 1 ) == (Timer*) 0 )
{
return;
}
/* Set up the idle timer. */
if ( tmr_create( (struct timeval*) 0, idle, JunkClientData, 5 * 1000L, 1 ) == (Timer*) 0 )
{
return;
}
start_time = stats_time = time( (time_t*) 0 );
stats_connections = 0;
stats_bytes = 0;
stats_simultaneous = 0;
/* Initialize our connections table. */
connects = NEW( connecttab, max_connects );
if ( connects == (connecttab*) 0 )
{
return;
}
for ( cnum = 0; cnum < max_connects; ++cnum )
{
connects[cnum].conn_state = CNST_FREE;
connects[cnum].next_free_connect = cnum + 1;
connects[cnum].hc = (httpd_conn*) 0;
}
connects[max_connects - 1].next_free_connect = -1; /* end of link list */
first_free_connect = 0;
num_connects = 0;
httpd_conn_count = 0;
if ( hs != (httpd_server*) 0 )
{
if ( hs->listen4_fd != -1 )
fdwatch_add_fd( hs->listen4_fd, (void*) 0, FDW_READ );
if ( hs->listen6_fd != -1 )
fdwatch_add_fd( hs->listen6_fd, (void*) 0, FDW_READ );
}
/* Main loop. */
(void) gettimeofday( &tv, (struct timezone*) 0 );
while ( ( ! terminate ) || num_connects > 0 )
{
/* Do the fd watch. */
num_ready = fdwatch( tmr_mstimeout( &tv ) );
if ( num_ready < 0 )
{
if ( errno == EINTR || errno == EAGAIN )
continue; /* try again */
return;
}
(void) gettimeofday( &tv, (struct timezone*) 0 );
if ( num_ready == 0 )
{
/* No fd's are ready - run the timers. */
tmr_run( &tv );
continue;
}
/* Is it a new connection? */
if ( hs != (httpd_server*) 0 && hs->listen6_fd != -1 &&
fdwatch_check_fd( hs->listen6_fd ) )
{
if ( handle_newconnect( &tv, hs->listen6_fd ) )
/* Go around the loop and do another fdwatch, rather than
** dropping through and processing existing connections.
** New connections always get priority.
*/
continue;
}
if ( hs != (httpd_server*) 0 && hs->listen4_fd != -1 &&
fdwatch_check_fd( hs->listen4_fd ) )
{
if ( handle_newconnect( &tv, hs->listen4_fd ) )
/* Go around the loop and do another fdwatch, rather than
** dropping through and processing existing connections.
** New connections always get priority.
*/
continue;
}
/* Find the connections that need servicing. */
while ( ( c = (connecttab*) fdwatch_get_next_client_data() ) != (connecttab*) -1 )
{
if ( c == (connecttab*) 0 )
continue;
hc = c->hc;
if ( ! fdwatch_check_fd( hc->conn_fd ) )
/* Something went wrong. */
clear_connection( c, &tv );
else
switch ( c->conn_state )
{
case CNST_READING: handle_read( c, &tv ); break;
case CNST_SENDING: handle_send( c, &tv ); break;
case CNST_LINGERING: handle_linger( c, &tv ); break;
}
}
tmr_run( &tv );
}
/* The main loop terminated. */
shut_down();
return 0;
}
int
main( int argc, char** argv )
{
char* cp;
struct passwd* pwd;
uid_t uid;
gid_t gid;
char cwd[MAXPATHLEN];
FILE* logfp;
int num_ready;
int cnum, ridx;
connecttab* c;
httpd_conn* hc;
httpd_sockaddr sa4;
httpd_sockaddr sa6;
int gotv4, gotv6;
struct timeval tv;
argv0 = argv[0];
cp = strrchr( argv0, '/' );
if ( cp != (char*) 0 )
++cp;
else
cp = argv0;
openlog( cp, LOG_NDELAY|LOG_PID, LOG_FACILITY );
/* Handle command-line arguments. */
parse_args( argc, argv );
/* Check port number. */
if ( port <= 0 )
{
syslog( LOG_CRIT, "illegal port number" );
(void) fprintf( stderr, "%s: illegal port number\n", argv0 );
exit( 1 );
}
/* Read zone info now, in case we chroot(). */
tzset();
/* Look up hostname now, in case we chroot(). */
lookup_hostname( &sa4, sizeof(sa4), &gotv4, &sa6, sizeof(sa6), &gotv6 );
if ( ! ( gotv4 || gotv6 ) )
{
syslog( LOG_ERR, "can't find any valid address" );
(void) fprintf( stderr, "%s: can't find any valid address\n", argv0 );
exit( 1 );
}
/* Throttle file. */
numthrottles = 0;
maxthrottles = 0;
throttles = (throttletab*) 0;
if ( throttlefile != (char*) 0 )
read_throttlefile( throttlefile );
/* Log file. */
if ( logfile != (char*) 0 )
{
if ( strcmp( logfile, "/dev/null" ) == 0 )
{
no_log = 1;
logfp = (FILE*) 0;
}
else
{
logfp = fopen( logfile, "a" );
if ( logfp == (FILE*) 0 )
{
syslog( LOG_CRIT, "%.80s - %m", logfile );
perror( logfile );
exit( 1 );
}
(void) fcntl( fileno( logfp ), F_SETFD, 1 );
}
}
else
logfp = (FILE*) 0;
/* Figure out uid/gid from user. */
pwd = getpwnam( user );
if ( pwd == (struct passwd*) 0 )
{
syslog( LOG_CRIT, "unknown user - '%.80s'", user );
(void) fprintf( stderr, "%s: unknown user - '%s'\n", argv0, user );
exit( 1 );
}
uid = pwd->pw_uid;
gid = pwd->pw_gid;
/* Switch directories if requested. */
if ( dir != (char*) 0 )
{
if ( chdir( dir ) < 0 )
{
syslog( LOG_CRIT, "chdir - %m" );
perror( "chdir" );
exit( 1 );
}
}
#ifdef USE_USER_DIR
else if ( getuid() == 0 )
{
/* No explicit directory was specified, we're root, and the
** USE_USER_DIR option is set - switch to the specified user's
** home dir.
*/
if ( chdir( pwd->pw_dir ) < 0 )
{
syslog( LOG_CRIT, "chdir - %m" );
perror( "chdir" );
exit( 1 );
}
}
#endif /* USE_USER_DIR */
/* Get current directory. */
(void) getcwd( cwd, sizeof(cwd) - 1 );
if ( cwd[strlen( cwd ) - 1] != '/' )
(void) strcat( cwd, "/" );
if ( ! debug )
{
/* We're not going to use stdin stdout or stderr from here on, so close
** them to save file descriptors.
*/
(void) fclose( stdin );
(void) fclose( stdout );
(void) fclose( stderr );
/* Daemonize - make ourselves a subprocess. */
#ifdef HAVE_DAEMON
if ( daemon( 1, 1 ) < 0 )
{
syslog( LOG_CRIT, "daemon - %m" );
exit( 1 );
}
#else /* HAVE_DAEMON */
switch ( fork() )
{
case 0:
break;
case -1:
syslog( LOG_CRIT, "fork - %m" );
exit( 1 );
default:
exit( 0 );
}
#ifdef HAVE_SETSID
(void) setsid();
#endif /* HAVE_SETSID */
#endif /* HAVE_DAEMON */
}
else
{
/* Even if we don't daemonize, we still want to disown our parent
** process.
*/
#ifdef HAVE_SETSID
(void) setsid();
#endif /* HAVE_SETSID */
}
if ( pidfile != (char*) 0 )
{
/* Write the PID file. */
FILE* pidfp = fopen( pidfile, "w" );
if ( pidfp == (FILE*) 0 )
{
syslog( LOG_CRIT, "%.80s - %m", pidfile );
exit( 1 );
}
(void) fprintf( pidfp, "%d\n", (int) getpid() );
(void) fclose( pidfp );
}
/* Chroot if requested. */
if ( do_chroot )
{
if ( chroot( cwd ) < 0 )
{
syslog( LOG_CRIT, "chroot - %m" );
perror( "chroot" );
exit( 1 );
}
(void) strcpy( cwd, "/" );
/* Always chdir to / after a chroot. */
if ( chdir( cwd ) < 0 )
{
syslog( LOG_CRIT, "chroot chdir - %m" );
perror( "chroot chdir" );
exit( 1 );
}
}
/* Set up to catch signals. */
(void) signal( SIGTERM, handle_term );
(void) signal( SIGINT, handle_term );
(void) signal( SIGPIPE, SIG_IGN ); /* get EPIPE instead */
(void) signal( SIGHUP, handle_hup );
got_usr1 = 0;
(void) signal( SIGUSR1, handle_usr1 );
(void) signal( SIGUSR2, handle_usr2 );
/* Initialize the timer package. */
tmr_init();
/* Initialize the HTTP layer. Got to do this before giving up root,
** so that we can bind to a privileged port.
*/
hs = httpd_initialize(
hostname,
gotv4 ? &sa4 : (httpd_sockaddr*) 0, gotv6 ? &sa6 : (httpd_sockaddr*) 0,
port, cgi_pattern, charset, cwd, no_log, logfp, no_symlink, do_vhost,
do_global_passwd, url_pattern, local_pattern, no_empty_referers );
if ( hs == (httpd_server*) 0 )
exit( 1 );
/* Set up the occasional timer. */
if ( tmr_create( (struct timeval*) 0, occasional, JunkClientData, OCCASIONAL_TIME * 1000L, 1 ) == (Timer*) 0 )
{
syslog( LOG_CRIT, "tmr_create(occasional) failed" );
exit( 1 );
}
if ( numthrottles > 0 )
{
/* Set up the throttles timer. */
if ( tmr_create( (struct timeval*) 0, update_throttles, JunkClientData, THROTTLE_TIME * 1000L, 1 ) == (Timer*) 0 )
{
syslog( LOG_CRIT, "tmr_create(update_throttles) failed" );
exit( 1 );
}
}
#ifdef STATS_TIME
/* Set up the stats timer. */
if ( tmr_create( (struct timeval*) 0, show_stats, JunkClientData, STATS_TIME * 1000L, 1 ) == (Timer*) 0 )
{
syslog( LOG_CRIT, "tmr_create(show_stats) failed" );
exit( 1 );
}
#endif /* STATS_TIME */
start_time = stats_time = time( (time_t*) 0 );
stats_connections = stats_bytes = 0L;
stats_simultaneous = 0;
/* If we're root, try to become someone else. */
if ( getuid() == 0 )
{
/* Set aux groups to null. */
if ( setgroups( 0, (const gid_t*) 0 ) < 0 )
{
syslog( LOG_CRIT, "setgroups - %m" );
exit( 1 );
}
/* Set primary group. */
if ( setgid( gid ) < 0 )
{
syslog( LOG_CRIT, "setgid - %m" );
exit( 1 );
}
/* Try setting aux groups correctly - not critical if this fails. */
if ( initgroups( user, gid ) < 0 )
syslog( LOG_WARNING, "initgroups - %m" );
#ifdef HAVE_SETLOGIN
/* Set login name. */
(void) setlogin( user );
#endif /* HAVE_SETLOGIN */
/* Set uid. */
if ( setuid( uid ) < 0 )
{
syslog( LOG_CRIT, "setuid - %m" );
exit( 1 );
}
/* Check for unnecessary security exposure. */
if ( ! do_chroot )
syslog(
LOG_CRIT,
"started as root without requesting chroot(), warning only" );
}
/* Initialize our connections table. */
maxconnects = fdwatch_get_nfiles();
if ( maxconnects < 0 )
{
syslog( LOG_CRIT, "fdwatch initialization failure" );
exit( 1 );
}
maxconnects -= SPARE_FDS;
connects = NEW( connecttab, maxconnects );
if ( connects == (connecttab*) 0 )
{
syslog( LOG_CRIT, "out of memory allocating a connecttab" );
exit( 1 );
}
for ( cnum = 0; cnum < maxconnects; ++cnum )
{
connects[cnum].conn_state = CNST_FREE;
connects[cnum].hc = (httpd_conn*) 0;
}
numconnects = 0;
httpd_conn_count = 0;
if ( hs != (httpd_server*) 0 )
{
if ( hs->listen4_fd != -1 )
fdwatch_add_fd( hs->listen4_fd, (void*) 0, FDW_READ );
if ( hs->listen6_fd != -1 )
fdwatch_add_fd( hs->listen6_fd, (void*) 0, FDW_READ );
}
/* Main loop. */
(void) gettimeofday( &tv, (struct timezone*) 0 );
while ( ( ! terminate ) || numconnects > 0 )
{
/* Do the fd watch. */
num_ready = fdwatch( tmr_mstimeout( &tv ) );
if ( num_ready < 0 )
{
if ( errno == EINTR )
continue; /* try again */
syslog( LOG_ERR, "fdwatch - %m" );
exit( 1 );
}
(void) gettimeofday( &tv, (struct timezone*) 0 );
if ( num_ready == 0 )
{
/* No fd's are ready - run the timers. */
tmr_run( &tv );
continue;
}
/* Is it a new connection? */
if ( hs != (httpd_server*) 0 && hs->listen6_fd != -1 &&
fdwatch_check_fd( hs->listen6_fd ) )
{
if ( handle_newconnect( &tv, hs->listen6_fd ) )
/* Go around the loop and do another fdwatch, rather than
** dropping through and processing existing connections.
** New connections always get priority.
*/
continue;
}
if ( hs != (httpd_server*) 0 && hs->listen4_fd != -1 &&
fdwatch_check_fd( hs->listen4_fd ) )
{
if ( handle_newconnect( &tv, hs->listen4_fd ) )
/* Go around the loop and do another fdwatch, rather than
** dropping through and processing existing connections.
** New connections always get priority.
*/
continue;
}
/* Find the connections that need servicing. */
for ( ridx = 0; ridx < num_ready; ++ridx )
{
c = (connecttab*) fdwatch_get_client_data( ridx );
if ( c == (connecttab*) 0 )
continue;
hc = c->hc;
if ( c->conn_state == CNST_READING &&
fdwatch_check_fd( hc->conn_fd ) )
handle_read( c, &tv );
else if ( c->conn_state == CNST_SENDING &&
fdwatch_check_fd( hc->conn_fd ) )
handle_send( c, &tv );
else if ( c->conn_state == CNST_LINGERING &&
fdwatch_check_fd( hc->conn_fd ) )
handle_linger( c, &tv );
}
tmr_run( &tv );
if ( got_usr1 && ! terminate )
{
terminate = 1;
if ( hs != (httpd_server*) 0 )
{
httpd_terminate( hs );
hs = (httpd_server*) 0;
}
}
}
/* The main loop terminated. */
shut_down();
syslog( LOG_NOTICE, "exiting" );
closelog();
exit( 0 );
}