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thttpd.c
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thttpd.c
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/*
* thttpd.c - tiny/turbo/throttling HTTP server *
*
* Copyright © 1995,1998,1999,2000,2001 by Jef Poskanzer <[email protected]>. *
* 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/wait.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"
#ifndef SHUT_WR
#define SHUT_WR 1
#endif
#ifndef HAVE_INT64T
typedef long long int64_t;
#endif
static char *argv0;
static int debug;
static unsigned short port;
static char *dir;
static char *data_dir;
static int do_chroot, no_log, no_symlink_check, do_vhost, do_global_passwd;
static char *cgi_pattern;
static int cgi_limit;
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;
static char *p3p;
static int max_age;
typedef struct {
char *pattern;
long max_limit, min_limit;
long rate;
off_t bytes_since_avg;
int num_sending;
} throttletab;
static throttletab *throttles;
static int numthrottles, maxthrottles;
#define THROTTLE_NOLIMIT -1
typedef struct {
int conn_state;
int next_free_connect;
httpd_conn *hc;
int tnums [MAXTHROTTLENUMS]; /* throttle indexes */
int numtnums;
long max_limit, min_limit;
time_t started_at, active_at;
Timer *wakeup_timer;
Timer *linger_timer;
long wouldblock_delay;
off_t bytes;
off_t end_byte_index;
off_t next_byte_index;
} connecttab;
static connecttab *connects;
static int num_connects, max_connects, first_free_connect;
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;
off_t stats_bytes;
int stats_simultaneous;
static volatile int got_hup, got_usr1, watchdog_flag;
/* 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 finish_connection(connecttab * c, struct timeval *tvP);
static void clear_connection(connecttab * c, struct timeval *tvP);
static void really_clear_connection(connecttab * c, struct timeval *tvP);
static void idle(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);
/* SIGTERM and SIGINT say to exit immediately. */
static void
handle_term(int sig)
{
/* Don't need to set up the handler again, since it's a one-shot. */
shut_down();
syslog(LOG_NOTICE, "exiting due to signal %d", sig);
closelog();
exit(1);
}
/* SIGCHLD - a chile process exitted, so we need to reap the zombie */
static void
handle_chld(int sig)
{
const int oerrno = errno;
pid_t pid;
int status;
#ifndef HAVE_SIGSET
/* Set up handler again. */
(void)signal(SIGCHLD, handle_chld);
#endif /* ! HAVE_SIGSET */
/* Reap defunct children until there aren't any more. */
for (;;) {
#ifdef HAVE_WAITPID
pid = waitpid((pid_t) - 1, &status, WNOHANG);
#else /* HAVE_WAITPID */
pid = wait3(&status, WNOHANG, (struct rusage *)0);
#endif /* HAVE_WAITPID */
if ((int)pid == 0) /* none left */
break;
if ((int)pid < 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
/*
* ECHILD shouldn't happen with the WNOHANG option, *
* but with some kernels it does anyway. Ignore it.
*/
if (errno != ECHILD)
syslog(LOG_ERR, "child wait - %m");
break;
}
/*
* Decrement the CGI count. Note that this is not accurate,
* since * each CGI can involve two or even three child
* processes. * Decrementing for each child means that when
* there is heavy CGI * activity, the count will be lower
* than it should be, and therefore * more CGIs will be
* allowed than should be.
*/
if (hs != (httpd_server *) 0) {
--hs->cgi_count;
if (hs->cgi_count < 0)
hs->cgi_count = 0;
}
}
/* Restore previous errno. */
errno = oerrno;
}
/* SIGHUP says to re-open the log file. */
static void
handle_hup(int sig)
{
const int oerrno = errno;
#ifndef HAVE_SIGSET
/* Set up handler again. */
(void)signal(SIGHUP, handle_hup);
#endif /* ! HAVE_SIGSET */
/* Just set a flag that we got the signal. */
got_hup = 1;
/* Restore previous errno. */
errno = oerrno;
}
/* SIGUSR1 says to exit as soon as all current connections are done. */
static void
handle_usr1(int sig)
{
/* Don't need to set up the handler again, since it's a one-shot. */
if (num_connects == 0) {
/*
* If there are no active connections we want to exit
* immediately * here. Not only is it faster, but without
* any connections the * main loop won't wake up until the
* next new connection.
*/
shut_down();
syslog(LOG_NOTICE, "exiting");
closelog();
exit(0);
}
/* Otherwise, just set a flag that we got the signal. */
got_usr1 = 1;
/* Don't need to restore old errno, since we didn't do any syscalls. */
}
/* SIGUSR2 says to generate the stats syslogs immediately. */
static void
handle_usr2(int sig)
{
const int oerrno = errno;
#ifndef HAVE_SIGSET
/* Set up handler again. */
(void)signal(SIGUSR2, handle_usr2);
#endif /* ! HAVE_SIGSET */
logstats((struct timeval *)0);
/* Restore previous errno. */
errno = oerrno;
}
/* SIGALRM is used as a watchdog. */
static void
handle_alrm(int sig)
{
const int oerrno = errno;
/* If nothing has been happening */
if (!watchdog_flag) {
/* Try changing dirs to someplace we can write. */
(void)chdir("/tmp");
/* Dump core. */
abort();
}
watchdog_flag = 0;
#ifndef HAVE_SIGSET
/* Set up handler again. */
(void)signal(SIGALRM, handle_alrm);
#endif /* ! HAVE_SIGSET */
/* Set up alarm again. */
(void)alarm(OCCASIONAL_TIME * 3);
/* Restore previous errno. */
errno = oerrno;
}
static void
re_open_logfile(void)
{
FILE *logfp;
if (no_log || hs == (httpd_server *) 0)
return;
/* Re-open the log file. */
if (logfile != (char *)0 && strcmp(logfile, "-") != 0) {
syslog(LOG_NOTICE, "re-opening logfile");
logfp = fopen(logfile, "a");
if (logfp == (FILE *) 0) {
syslog(LOG_CRIT, "re-opening %.80s - %m", logfile);
return;
}
(void)fcntl(fileno(logfp), F_SETFD, 1);
httpd_set_logfp(hs, logfp);
}
}
int
main(int argc, char **argv)
{
char *cp;
struct passwd *pwd;
uid_t uid = 32767;
gid_t gid = 32767;
char cwd [MAXPATHLEN + 1];
FILE *logfp;
int num_ready;
int cnum;
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);
/* 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);
/*
* If we're root and we're going to become another user, get the
* uid/gid * now.
*/
if (getuid() == 0) {
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;
}
/* Log file. */
if (logfile != (char *)0) {
if (strcmp(logfile, "/dev/null") == 0) {
no_log = 1;
logfp = (FILE *) 0;
} else if (strcmp(logfile, "-") == 0)
logfp = stdout;
else {
logfp = fopen(logfile, "a");
if (logfp == (FILE *) 0) {
syslog(LOG_CRIT, "%.80s - %m", logfile);
perror(logfile);
exit(1);
}
if (logfile[0] != '/') {
syslog(LOG_WARNING, "logfile is not an absolute path, you may not be able to re-open it");
(void)fprintf(stderr, "%s: logfile is not an absolute path, you may not be able to re-open it\n", argv0);
}
(void)fcntl(fileno(logfp), F_SETFD, 1);
if (getuid() == 0) {
/*
* If we are root then we chown the log file
* to the user we'll * be switching to.
*/
if (fchown(fileno(logfp), uid, gid) < 0) {
syslog(LOG_WARNING, "fchown logfile - %m");
perror("fchown logfile");
}
}
}
} else
logfp = (FILE *) 0;
/* 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);
if (logfp != stdout)
(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);
}
/*
* Initialize the fdwatch package. Have to do this before chroot, *
* if /dev/poll is used.
*/
max_connects = fdwatch_get_nfiles();
if (max_connects < 0) {
syslog(LOG_CRIT, "fdwatch initialization failure");
exit(1);
}
max_connects -= SPARE_FDS;
/* Chroot if requested. */
if (do_chroot) {
if (chroot(cwd) < 0) {
syslog(LOG_CRIT, "chroot - %m");
perror("chroot");
exit(1);
}
/*
* If we're logging and the logfile's pathname begins with
* the * chroot tree's pathname, then elide the chroot
* pathname so * that the logfile pathname still works from
* inside the chroot * tree.
*/
if (logfile != (char *)0 && strcmp(logfile, "-") != 0) {
if (strncmp(logfile, cwd, strlen(cwd)) == 0) {
(void)strcpy(logfile, &logfile[strlen(cwd) - 1]);
/*
* (We already guaranteed that cwd ends with
* a slash, so leaving * that slash in
* logfile makes it an absolute pathname
* within * the chroot tree.)
*/
} else {
syslog(LOG_WARNING, "logfile is not within the chroot tree, you will not be able to re-open it");
(void)fprintf(stderr, "%s: logfile is not within the chroot tree, you will not be able to re-open it\n", argv0);
}
}
(void)strcpy(cwd, "/");
/* Always chdir to / after a chroot. */
if (chdir(cwd) < 0) {
syslog(LOG_CRIT, "chroot chdir - %m");
perror("chroot chdir");
exit(1);
}
}
/* Switch directories again if requested. */
if (data_dir != (char *)0) {
if (chdir(data_dir) < 0) {
syslog(LOG_CRIT, "data_dir chdir - %m");
perror("data_dir chdir");
exit(1);
}
}
/* Set up to catch signals. */
#ifdef HAVE_SIGSET
(void)sigset(SIGTERM, handle_term);
(void)sigset(SIGINT, handle_term);
(void)sigset(SIGCHLD, handle_chld);
(void)sigset(SIGPIPE, SIG_IGN); /* get EPIPE instead */
(void)sigset(SIGHUP, handle_hup);
(void)sigset(SIGUSR1, handle_usr1);
(void)sigset(SIGUSR2, handle_usr2);
(void)sigset(SIGALRM, handle_alrm);
#else /* HAVE_SIGSET */
(void)signal(SIGTERM, handle_term);
(void)signal(SIGINT, handle_term);
(void)signal(SIGCHLD, handle_chld);
(void)signal(SIGPIPE, SIG_IGN); /* get EPIPE instead */
(void)signal(SIGHUP, handle_hup);
(void)signal(SIGUSR1, handle_usr1);
(void)signal(SIGUSR2, handle_usr2);
(void)signal(SIGALRM, handle_alrm);
#endif /* HAVE_SIGSET */
got_hup = 0;
got_usr1 = 0;
watchdog_flag = 0;
(void)alarm(OCCASIONAL_TIME * 3);
/* 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, cwd, no_log, logfp,
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) {
syslog(LOG_CRIT, "tmr_create(occasional) failed");
exit(1);
}
/* Set up the idle timer. */
if (tmr_create((struct timeval *)0, idle, JunkClientData, 5 * 1000L, 1) == (Timer *) 0) {
syslog(LOG_CRIT, "tmr_create(idle) 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 = 0;
stats_bytes = 0;
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_WARNING,
"started as root without requesting chroot(), warning only");
}
/* Initialize our connections table. */
connects = NEW(connecttab, max_connects);
if (connects == (connecttab *) 0) {
syslog(LOG_CRIT, "out of memory allocating a connecttab");
exit(1);
}
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 we need to re-open the log file? */
if (got_hup) {
re_open_logfile();
got_hup = 0;
}
/* Do the fd watch. */
num_ready = fdwatch(tmr_mstimeout(&tv));
if (num_ready < 0) {
if (errno == EINTR || errno == EAGAIN)
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. */
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);
if (got_usr1 && !terminate) {
terminate = 1;
if (hs != (httpd_server *) 0) {
if (hs->listen4_fd != -1)
fdwatch_del_fd(hs->listen4_fd);
if (hs->listen6_fd != -1)
fdwatch_del_fd(hs->listen6_fd);
httpd_unlisten(hs);
}
}
}
/* 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;
data_dir = (char *)0;
#ifdef ALWAYS_CHROOT
do_chroot = 1;
#else /* ALWAYS_CHROOT */
do_chroot = 0;
#endif /* ALWAYS_CHROOT */
no_log = 0;
no_symlink_check = 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 */
#ifdef CGI_LIMIT
cgi_limit = CGI_LIMIT;
#else /* CGI_LIMIT */
cgi_limit = 0;
#endif /* CGI_LIMIT */
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;
p3p = "";
max_age = -1;
argn = 1;
while (argn < argc && argv[argn][0] == '-') {
if (strcmp(argv[argn], "-V") == 0) {
(void)printf("%s\n", SERVER_SOFTWARE);
exit(0);
} else 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 = (unsigned short)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_check = 1;
} else if (strcmp(argv[argn], "-nor") == 0) {
do_chroot = 0;
no_symlink_check = 0;
} else if (strcmp(argv[argn], "-dd") == 0 && argn + 1 < argc) {
++argn;
data_dir = argv[argn];
} else if (strcmp(argv[argn], "-s") == 0)
no_symlink_check = 0;
else if (strcmp(argv[argn], "-nos") == 0)
no_symlink_check = 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], "-P") == 0 && argn + 1 < argc) {
++argn;
p3p = argv[argn];
} else if (strcmp(argv[argn], "-M") == 0 && argn + 1 < argc) {
++argn;
max_age = atoi(argv[argn]);
} 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] [-dd data_dir] [-s|-nos] [-v|-nov] [-g|-nog] [-u user] [-c cgipat] [-t throttles] [-h host] [-l logfile] [-i pidfile] [-T charset] [-P P3P] [-M maxage] [-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';
/* Skip leading whitespace. */
cp = line;
cp += strspn(cp, " \t\n\r");
/* Split line into words. */
while (*cp != '\0') {
/* 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 = (unsigned short)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_check = 1;
} else if (strcasecmp(name, "nochroot") == 0) {
no_value_required(name, value);
do_chroot = 0;
no_symlink_check = 0;
} else if (strcasecmp(name, "data_dir") == 0) {
value_required(name, value);
data_dir = e_strdup(value);
} else if (strcasecmp(name, "symlink") == 0) {
no_value_required(name, value);
no_symlink_check = 0;
} else if (strcasecmp(name, "nosymlink") == 0) {
no_value_required(name, value);
no_symlink_check = 1;
} else if (strcasecmp(name, "symlinks") == 0) {
no_value_required(name, value);
no_symlink_check = 0;
} else if (strcasecmp(name, "nosymlinks") == 0) {
no_value_required(name, value);
no_symlink_check = 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, "cgilimit") == 0) {
value_required(name, value);
cgi_limit = atoi(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) {