/
thttpd.c
1828 lines (1658 loc) · 45.2 KB
/
thttpd.c
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/* thttpd.c - tiny/turbo/throttling HTTP server
**
** Copyright © 1995,1998,1999,2000,2001 by Jef Poskanzer <jef@acme.com>.
** 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.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include "config.h"
#include "version.h"
#include <sys/param.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <errno.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <pwd.h>
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#ifdef TIME_WITH_SYS_TIME
#include <time.h>
#endif
#include <unistd.h>
#include "fdwatch.h"
#include "libhttpd.h"
#include "mmc.h"
#include "timers.h"
#include "match.h"
static char* argv0;
static int debug;
static int port;
static char* dir;
static int do_chroot, no_log, no_symlink, do_vhost, do_global_passwd;
static char* cgi_pattern;
static char* url_pattern;
static int no_empty_referers;
static char* local_pattern;
static char* logfile;
static char* throttlefile;
static char* hostname;
static char* pidfile;
static char* user;
static char* charset;
typedef struct {
char* pattern;
long limit;
long rate;
off_t bytes_since_avg;
int num_sending;
} throttletab;
static throttletab* throttles;
static int numthrottles, maxthrottles;
#define THROTTLE_NOLIMIT 1234567890L /* default limit (if none) */
typedef struct {
int conn_state;
httpd_conn* hc;
int tnums[MAXTHROTTLENUMS]; /* throttle indexes */
int numtnums;
long limit;
time_t started_at;
Timer* idle_read_timer;
Timer* idle_send_timer;
Timer* wakeup_timer;
Timer* linger_timer;
long wouldblock_delay;
off_t bytes;
off_t bytes_sent;
off_t bytes_to_send;
} connecttab;
static connecttab* connects;
static int numconnects, maxconnects;
static int httpd_conn_count;
/* The connection states. */
#define CNST_FREE 0
#define CNST_READING 1
#define CNST_SENDING 2
#define CNST_PAUSING 3
#define CNST_LINGERING 4
static httpd_server* hs = (httpd_server*) 0;
int terminate = 0;
time_t start_time, stats_time;
long stats_connections, stats_bytes;
int stats_simultaneous;
static int got_usr1;
/* Forwards. */
static void parse_args( int argc, char** argv );
static void usage( void );
static void read_config( char* filename );
static void value_required( char* name, char* value );
static void no_value_required( char* name, char* value );
static char* e_strdup( char* oldstr );
static void lookup_hostname( httpd_sockaddr* sa4P, size_t sa4_len, int* gotv4P, httpd_sockaddr* sa6P, size_t sa6_len, int* gotv6P );
static void read_throttlefile( char* throttlefile );
static void shut_down( void );
static int handle_newconnect( struct timeval* tvP, int listen_fd );
static void handle_read( connecttab* c, struct timeval* tvP );
static void handle_send( connecttab* c, struct timeval* tvP );
static void handle_linger( connecttab* c, struct timeval* tvP );
static int check_throttles( connecttab* c );
static void clear_throttles( connecttab* c, struct timeval* tvP );
static void update_throttles( ClientData client_data, struct timeval* nowP );
static void clear_connection( connecttab* c, struct timeval* tvP );
static void really_clear_connection( connecttab* c, struct timeval* tvP );
static void idle_read_connection( ClientData client_data, struct timeval* nowP );
static void idle_send_connection( ClientData client_data, struct timeval* nowP );
static void wakeup_connection( ClientData client_data, struct timeval* nowP );
static void linger_clear_connection( ClientData client_data, struct timeval* nowP );
static void occasional( ClientData client_data, struct timeval* nowP );
#ifdef STATS_TIME
static void show_stats( ClientData client_data, struct timeval* nowP );
#endif /* STATS_TIME */
static void logstats( struct timeval* nowP );
static void thttpd_logstats( long secs );
static void
handle_term( int sig )
{
shut_down();
syslog( LOG_NOTICE, "exiting due to signal %d", sig );
closelog();
exit( 1 );
}
static void
handle_hup( int sig )
{
FILE* logfp;
if ( no_log )
return;
/* Re-open the log file. */
if ( logfile != (char*) 0 )
{
logfp = fopen( logfile, "a" );
if ( logfp == (FILE*) 0 )
{
syslog( LOG_CRIT, "reopening %.80s - %m", logfile );
return;
}
(void) fcntl( fileno( logfp ), F_SETFD, 1 );
httpd_set_logfp( hs, logfp );
}
}
static void
handle_usr1( int sig )
{
got_usr1 = 1;
}
static void
handle_usr2( int sig )
{
logstats( (struct timeval*) 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 );
}
static void
parse_args( int argc, char** argv )
{
int argn;
debug = 0;
port = DEFAULT_PORT;
dir = (char*) 0;
#ifdef ALWAYS_CHROOT
do_chroot = 1;
#else /* ALWAYS_CHROOT */
do_chroot = 0;
#endif /* ALWAYS_CHROOT */
no_log = 0;
no_symlink = do_chroot;
#ifdef ALWAYS_VHOST
do_vhost = 1;
#else /* ALWAYS_VHOST */
do_vhost = 0;
#endif /* ALWAYS_VHOST */
#ifdef ALWAYS_GLOBAL_PASSWD
do_global_passwd = 1;
#else /* ALWAYS_GLOBAL_PASSWD */
do_global_passwd = 0;
#endif /* ALWAYS_GLOBAL_PASSWD */
#ifdef CGI_PATTERN
cgi_pattern = CGI_PATTERN;
#else /* CGI_PATTERN */
cgi_pattern = (char*) 0;
#endif /* CGI_PATTERN */
url_pattern = (char*) 0;
no_empty_referers = 0;
local_pattern = (char*) 0;
throttlefile = (char*) 0;
hostname = (char*) 0;
logfile = (char*) 0;
pidfile = (char*) 0;
user = DEFAULT_USER;
charset = DEFAULT_CHARSET;
argn = 1;
while ( argn < argc && argv[argn][0] == '-' )
{
if ( strcmp( argv[argn], "-C" ) == 0 && argn + 1 < argc )
{
++argn;
read_config( argv[argn] );
}
else if ( strcmp( argv[argn], "-p" ) == 0 && argn + 1 < argc )
{
++argn;
port = atoi( argv[argn] );
}
else if ( strcmp( argv[argn], "-d" ) == 0 && argn + 1 < argc )
{
++argn;
dir = argv[argn];
}
else if ( strcmp( argv[argn], "-r" ) == 0 )
{
do_chroot = 1;
no_symlink = 1;
}
else if ( strcmp( argv[argn], "-nor" ) == 0 )
{
do_chroot = 0;
no_symlink = 0;
}
else if ( strcmp( argv[argn], "-s" ) == 0 )
no_symlink = 0;
else if ( strcmp( argv[argn], "-nos" ) == 0 )
no_symlink = 1;
else if ( strcmp( argv[argn], "-u" ) == 0 && argn + 1 < argc )
{
++argn;
user = argv[argn];
}
else if ( strcmp( argv[argn], "-c" ) == 0 && argn + 1 < argc )
{
++argn;
cgi_pattern = argv[argn];
}
else if ( strcmp( argv[argn], "-t" ) == 0 && argn + 1 < argc )
{
++argn;
throttlefile = argv[argn];
}
else if ( strcmp( argv[argn], "-h" ) == 0 && argn + 1 < argc )
{
++argn;
hostname = argv[argn];
}
else if ( strcmp( argv[argn], "-l" ) == 0 && argn + 1 < argc )
{
++argn;
logfile = argv[argn];
}
else if ( strcmp( argv[argn], "-v" ) == 0 )
do_vhost = 1;
else if ( strcmp( argv[argn], "-nov" ) == 0 )
do_vhost = 0;
else if ( strcmp( argv[argn], "-g" ) == 0 )
do_global_passwd = 1;
else if ( strcmp( argv[argn], "-nog" ) == 0 )
do_global_passwd = 0;
else if ( strcmp( argv[argn], "-i" ) == 0 && argn + 1 < argc )
{
++argn;
pidfile = argv[argn];
}
else if ( strcmp( argv[argn], "-T" ) == 0 && argn + 1 < argc )
{
++argn;
charset = argv[argn];
}
else if ( strcmp( argv[argn], "-V" ) == 0 )
{
(void) fprintf( stderr, "%s\n", SERVER_SOFTWARE );
exit( 0 );
}
else if ( strcmp( argv[argn], "-D" ) == 0 )
debug = 1;
else
usage();
++argn;
}
if ( argn != argc )
usage();
}
static void
usage( void )
{
(void) fprintf( stderr,
"usage: %s [-C configfile] [-p port] [-d dir] [-r|-nor] [-v|-nov] [-g|-nog] [-u user] [-c cgipat] [-t throttles] [-h host] [-l logfile] [-i pidfile] [-T charset] [-V] [-D]\n",
argv0 );
exit( 1 );
}
static void
read_config( char* filename )
{
FILE* fp;
char line[10000];
char* cp;
char* cp2;
char* name;
char* value;
fp = fopen( filename, "r" );
if ( fp == (FILE*) 0 )
{
perror( filename );
exit( 1 );
}
while ( fgets( line, sizeof(line), fp ) != (char*) 0 )
{
/* Trim comments. */
if ( ( cp = strchr( line, '#' ) ) != (char*) 0 )
*cp = '\0';
/* Split line into words. */
for ( cp = line; *cp != '\0'; cp = cp2 )
{
/* Skip leading whitespace. */
cp += strspn( cp, " \t\n\r" );
/* Find next whitespace. */
cp2 = cp + strcspn( cp, " \t\n\r" );
/* Insert EOS and advance next-word pointer. */
while ( *cp2 == ' ' || *cp2 == '\t' || *cp2 == '\n' || *cp2 == '\r' )
*cp2++ = '\0';
/* Split into name and value. */
name = cp;
value = strchr( name, '=' );
if ( value != (char*) 0 )
*value++ = '\0';
/* Interpret. */
if ( strcasecmp( name, "debug" ) == 0 )
{
no_value_required( name, value );
debug = 1;
}
else if ( strcasecmp( name, "port" ) == 0 )
{
value_required( name, value );
port = atoi( value );
}
else if ( strcasecmp( name, "dir" ) == 0 )
{
value_required( name, value );
dir = e_strdup( value );
}
else if ( strcasecmp( name, "chroot" ) == 0 )
{
no_value_required( name, value );
do_chroot = 1;
no_symlink = 1;
}
else if ( strcasecmp( name, "nochroot" ) == 0 )
{
no_value_required( name, value );
do_chroot = 0;
no_symlink = 0;
}
else if ( strcasecmp( name, "symlink" ) == 0 )
{
no_value_required( name, value );
no_symlink = 0;
}
else if ( strcasecmp( name, "nosymlink" ) == 0 )
{
no_value_required( name, value );
no_symlink = 1;
}
else if ( strcasecmp( name, "symlinks" ) == 0 )
{
no_value_required( name, value );
no_symlink = 0;
}
else if ( strcasecmp( name, "nosymlinks" ) == 0 )
{
no_value_required( name, value );
no_symlink = 1;
}
else if ( strcasecmp( name, "user" ) == 0 )
{
value_required( name, value );
user = e_strdup( value );
}
else if ( strcasecmp( name, "cgipat" ) == 0 )
{
value_required( name, value );
cgi_pattern = e_strdup( value );
}
else if ( strcasecmp( name, "urlpat" ) == 0 )
{
value_required( name, value );
url_pattern = e_strdup( value );
}
else if ( strcasecmp( name, "noemptyreferers" ) == 0 )
{
no_value_required( name, value );
no_empty_referers = 1;
}
else if ( strcasecmp( name, "localpat" ) == 0 )
{
value_required( name, value );
local_pattern = e_strdup( value );
}
else if ( strcasecmp( name, "throttles" ) == 0 )
{
value_required( name, value );
throttlefile = e_strdup( value );
}
else if ( strcasecmp( name, "host" ) == 0 )
{
value_required( name, value );
hostname = e_strdup( value );
}
else if ( strcasecmp( name, "logfile" ) == 0 )
{
value_required( name, value );
logfile = e_strdup( value );
}
else if ( strcasecmp( name, "vhost" ) == 0 )
{
no_value_required( name, value );
do_vhost = 1;
}
else if ( strcasecmp( name, "novhost" ) == 0 )
{
no_value_required( name, value );
do_vhost = 0;
}
else if ( strcasecmp( name, "globalpasswd" ) == 0 )
{
no_value_required( name, value );
do_global_passwd = 1;
}
else if ( strcasecmp( name, "noglobalpasswd" ) == 0 )
{
no_value_required( name, value );
do_global_passwd = 0;
}
else if ( strcasecmp( name, "pidfile" ) == 0 )
{
value_required( name, value );
pidfile = e_strdup( value );
}
else if ( strcasecmp( name, "charset" ) == 0 )
{
value_required( name, value );
charset = e_strdup( value );
}
else
{
(void) fprintf(
stderr, "%s: unknown config option '%s'\n", argv0, name );
exit( 1 );
}
}
}
(void) fclose( fp );
}
static void
value_required( char* name, char* value )
{
if ( value == (char*) 0 )
{
(void) fprintf(
stderr, "%s: value required for %s option\n", argv0, name );
exit( 1 );
}
}
static void
no_value_required( char* name, char* value )
{
if ( value != (char*) 0 )
{
(void) fprintf(
stderr, "%s: no value required for %s option\n",
argv0, name );
exit( 1 );
}
}
static char*
e_strdup( char* oldstr )
{
char* newstr;
newstr = strdup( oldstr );
if ( newstr == (char*) 0 )
{
syslog( LOG_CRIT, "out of memory copying a string" );
(void) fprintf( stderr, "%s: out of memory copying a string\n", argv0 );
exit( 1 );
}
return newstr;
}
static void
lookup_hostname( httpd_sockaddr* sa4P, size_t sa4_len, int* gotv4P, httpd_sockaddr* sa6P, size_t sa6_len, int* gotv6P )
{
#if defined(HAVE_GETADDRINFO) && defined(HAVE_GAI_STRERROR)
struct addrinfo hints;
struct addrinfo* ai;
struct addrinfo* ai2;
struct addrinfo* aiv4;
struct addrinfo* aiv6;
int gaierr;
char strport[10];
memset( &hints, 0, sizeof(hints) );
hints.ai_family = AF_UNSPEC;
hints.ai_flags = AI_PASSIVE;
hints.ai_socktype = SOCK_STREAM;
(void) snprintf( strport, sizeof(strport), "%d", port );
if ( (gaierr = getaddrinfo( hostname, strport, &hints, &ai )) != 0 )
{
syslog(
LOG_CRIT, "getaddrinfo %.80s - %.80s",
hostname, gai_strerror( gaierr ) );
(void) fprintf(
stderr, "%s: getaddrinfo %s - %s\n",
argv0, hostname, gai_strerror( gaierr ) );
exit( 1 );
}
/* Find the first IPv4 and IPv6 entries. */
aiv4 = (struct addrinfo*) 0;
aiv6 = (struct addrinfo*) 0;
for ( ai2 = ai; ai2 != (struct addrinfo*) 0; ai2 = ai2->ai_next )
{
switch ( ai2->ai_family )
{
case AF_INET:
if ( aiv4 == (struct addrinfo*) 0 )
aiv4 = ai2;
break;
#if defined(AF_INET6) && defined(HAVE_SOCKADDR_IN6)
case AF_INET6:
if ( aiv6 == (struct addrinfo*) 0 )
aiv6 = ai2;
break;
#endif /* AF_INET6 && HAVE_SOCKADDR_IN6 */
}
}
if ( aiv4 == (struct addrinfo*) 0 )
*gotv4P = 0;