lighttpd 1.4.x https://www.lighttpd.net/
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#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
#include <signal.h>
#include <assert.h>
#include <locale.h>
#include <stdio.h>
#include "server.h"
#include "buffer.h"
#include "network.h"
#include "log.h"
#include "keyvalue.h"
#include "response.h"
#include "request.h"
#include "chunk.h"
#include "http_chunk.h"
#include "fdevent.h"
#include "connections.h"
#include "file_cache.h"
#include "plugin.h"
#include "joblist.h"
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#ifdef HAVE_VALGRIND_VALGRIND_H
#include <valgrind/valgrind.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_PWD_H
#include <grp.h>
#include <pwd.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
const char *patches[] = { "SERVERsocket", "HTTPurl", "HTTPhost", "HTTPreferer", "HTTPuseragent", "HTTPcookie", NULL };
#ifndef __sgi
/* IRIX doesn't like the alarm based time() optimization */
/* #define USE_ALARM */
#endif
static sig_atomic_t srv_shutdown = 0;
static sig_atomic_t handle_sig_alarm = 1;
static sig_atomic_t handle_sig_hup = 0;
#if defined(HAVE_SIGACTION) && defined(SA_SIGINFO)
static void sigaction_handler(int sig, siginfo_t *si, void *context) {
UNUSED(si);
UNUSED(context);
switch (sig) {
case SIGTERM: srv_shutdown = 1; break;
case SIGALRM: handle_sig_alarm = 1; break;
case SIGHUP: handle_sig_hup = 1; break;
case SIGCHLD: break;
}
}
#elif defined(HAVE_SIGNAL) || defined(HAVE_SIGACTION)
static void signal_handler(int sig) {
switch (sig) {
case SIGTERM: srv_shutdown = 1; break;
case SIGALRM: handle_sig_alarm = 1; break;
case SIGHUP: handle_sig_hup = 1; break;
case SIGCHLD: break;
}
}
#endif
#ifdef HAVE_FORK
static void daemonize(void) {
#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif
#ifdef SIGTTIN
signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
#endif
if (fork() != 0) exit(0);
if (setsid() == -1) exit(0);
signal(SIGHUP, SIG_IGN);
if (fork() != 0) exit(0);
chdir("/");
umask(0);
}
#endif
static server *server_init(void) {
int i;
server *srv = calloc(1, sizeof(*srv));
assert(srv);
#define CLEAN(x) \
srv->x = buffer_init();
CLEAN(response_header);
CLEAN(parse_full_path);
CLEAN(ts_debug_str);
CLEAN(ts_date_str);
CLEAN(error_log);
CLEAN(response_range);
CLEAN(tmp_buf);
CLEAN(file_cache_etag);
CLEAN(range_buf);
CLEAN(empty_string);
buffer_copy_string(srv->empty_string, "");
CLEAN(srvconf.error_logfile);
CLEAN(srvconf.groupname);
CLEAN(srvconf.username);
CLEAN(srvconf.changeroot);
CLEAN(srvconf.bindhost);
CLEAN(srvconf.errorfile_prefix);
CLEAN(srvconf.license);
CLEAN(srvconf.event_handler);
CLEAN(srvconf.pid_file);
CLEAN(tmp_chunk_len);
#undef CLEAN
#define CLEAN(x) \
srv->x = array_init();
CLEAN(config_context);
CLEAN(config_touched);
#undef CLEAN
for (i = 0; i < FILE_CACHE_MAX; i++) {
srv->mtime_cache[i].str = buffer_init();
}
srv->cur_ts = time(NULL);
srv->startup_ts = srv->cur_ts;
srv->conns = calloc(1, sizeof(*srv->conns));
assert(srv->conns);
srv->joblist = calloc(1, sizeof(*srv->joblist));
assert(srv->joblist);
srv->fdwaitqueue = calloc(1, sizeof(*srv->fdwaitqueue));
assert(srv->fdwaitqueue);
srv->file_cache = file_cache_init();
assert(srv->file_cache);
srv->srvconf.modules = array_init();
/* use syslog */
srv->log_error_fd = -1;
srv->split_vals = array_init();
srv->config_patches = buffer_array_init();
for (i = 0; patches[i]; i++) {
buffer *b;
b = buffer_array_append_get_buffer(srv->config_patches);
buffer_copy_string(b, patches[i]);
}
return srv;
}
static void server_free(server *srv) {
size_t i;
for (i = 0; i < FILE_CACHE_MAX; i++) {
buffer_free(srv->mtime_cache[i].str);
}
buffer_array_free(srv->config_patches);
#define CLEAN(x) \
buffer_free(srv->x);
CLEAN(response_header);
CLEAN(parse_full_path);
CLEAN(ts_debug_str);
CLEAN(ts_date_str);
CLEAN(error_log);
CLEAN(response_range);
CLEAN(tmp_buf);
CLEAN(file_cache_etag);
CLEAN(range_buf);
CLEAN(empty_string);
CLEAN(srvconf.error_logfile);
CLEAN(srvconf.groupname);
CLEAN(srvconf.username);
CLEAN(srvconf.changeroot);
CLEAN(srvconf.bindhost);
CLEAN(srvconf.errorfile_prefix);
CLEAN(srvconf.license);
CLEAN(srvconf.event_handler);
CLEAN(srvconf.pid_file);
CLEAN(tmp_chunk_len);
#undef CLEAN
#if 0
fdevent_unregister(srv->ev, srv->fd);
#endif
fdevent_free(srv->ev);
connections_free(srv);
free(srv->conns);
if (srv->config_storage) {
for (i = 0; i < srv->config_context->used; i++) {
specific_config *s = srv->config_storage[i];
buffer_free(s->document_root);
buffer_free(s->server_name);
buffer_free(s->server_tag);
buffer_free(s->ssl_pemfile);
buffer_free(s->ssl_ca_file);
buffer_free(s->error_handler);
buffer_free(s->dirlist_css);
array_free(s->indexfiles);
array_free(s->mimetypes);
free(s);
}
free(srv->config_storage);
srv->config_storage = NULL;
}
#define CLEAN(x) \
array_free(srv->x);
CLEAN(config_context);
CLEAN(config_touched);
#undef CLEAN
joblist_free(srv, srv->joblist);
fdwaitqueue_free(srv, srv->fdwaitqueue);
file_cache_free(srv, srv->file_cache);
array_free(srv->srvconf.modules);
array_free(srv->split_vals);
free(srv);
}
static void show_version (void) {
#ifdef USE_OPENSSL
# define TEXT_SSL " (ssl)"
#else
# define TEXT_SSL
#endif
char *b = PACKAGE_NAME "-" PACKAGE_VERSION TEXT_SSL \
" - a light and fast webserver\n" \
"Build-Date: " __DATE__ " " __TIME__ "\n";
;
#undef TEXT_SSL
write(STDOUT_FILENO, b, strlen(b));
}
static void show_help (void) {
#ifdef USE_OPENSSL
# define TEXT_SSL " (ssl)"
#else
# define TEXT_SSL
#endif
#ifdef HAVE_IPV6
# define TEXT_IPV6 " -6 use IPv6\n"
#else
# define TEXT_IPV6
#endif
char *b = PACKAGE_NAME "-" PACKAGE_VERSION TEXT_SSL " ("__DATE__ " " __TIME__ ")" \
" - a light and fast webserver\n" \
"usage:\n" \
" -f <name> filename of the config-file\n" \
" -D don't go to background (default: go to background)\n" \
TEXT_IPV6 \
" -v show version\n" \
" -h show this help\n" \
"\n"
;
#undef TEXT_SSL
#undef TEXT_IPV6
write(STDOUT_FILENO, b, strlen(b));
}
int main (int argc, char **argv) {
server *srv = NULL;
int i_am_root;
int o;
int num_childs = 0;
int pid_fd = -1, fd;
size_t i;
#ifdef HAVE_SIGACTION
struct sigaction act;
#endif
#ifdef HAVE_GETRLIMIT
struct rlimit rlim;
#endif
#ifdef USE_ALARM
struct itimerval interval;
interval.it_interval.tv_sec = 1;
interval.it_interval.tv_usec = 0;
interval.it_value.tv_sec = 1;
interval.it_value.tv_usec = 0;
#endif
/* for nice %b handling in strfime() */
setlocale(LC_TIME, "C");
if (NULL == (srv = server_init())) {
fprintf(stderr, "did this really happend ?\n");
return -1;
}
/* init structs done */
srv->srvconf.port = 0;
#ifdef HAVE_GETUID
i_am_root = (getuid() == 0);
#else
i_am_root = 0;
#endif
srv->srvconf.dont_daemonize = 0;
while(-1 != (o = getopt(argc, argv, "f:hvD"))) {
switch(o) {
case 'f':
if (config_read(srv, optarg)) {
server_free(srv);
return -1;
}
break;
case 'D': srv->srvconf.dont_daemonize = 1; break;
case 'v': show_version(); return 0;
case 'h': show_help(); return 0;
default:
show_help();
server_free(srv);
return -1;
}
}
if (!srv->config_storage) {
log_error_write(srv, __FILE__, __LINE__, "s",
"No configuration available. Try using -f option.");
server_free(srv);
return -1;
}
/* close stdin and stdout, as they are not needed */
/* move stdin to /dev/null */
if (-1 != (fd = open("/dev/null", O_RDONLY))) {
close(STDIN_FILENO);
dup2(fd, STDIN_FILENO);
close(fd);
}
/* move stdout to /dev/null */
if (-1 != (fd = open("/dev/null", O_WRONLY))) {
close(STDOUT_FILENO);
dup2(fd, STDOUT_FILENO);
close(fd);
}
if (0 != config_set_defaults(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s",
"setting default values failed");
server_free(srv);
return -1;
}
/* UID handling */
#ifdef HAVE_GETUID
if (!i_am_root && (geteuid() == 0 || getegid() == 0)) {
/* we are setuid-root */
log_error_write(srv, __FILE__, __LINE__, "s",
"Are you nuts ? Don't apply a SUID bit to this binary");
server_free(srv);
return -1;
}
#endif
/* check document-root */
if (srv->config_storage[0]->document_root->used <= 1) {
log_error_write(srv, __FILE__, __LINE__, "s",
"document-root is not set\n");
server_free(srv);
return -1;
}
if (plugins_load(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s",
"loading plugins finally failed");
plugins_free(srv);
server_free(srv);
return -1;
}
/* open pid file BEFORE chroot */
if (srv->srvconf.pid_file->used) {
if (-1 == (pid_fd = open(srv->srvconf.pid_file->ptr, O_WRONLY | O_CREAT | O_EXCL | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH))) {
struct stat st;
if (errno != EEXIST) {
log_error_write(srv, __FILE__, __LINE__, "sbs",
"opening pid-file failed:", srv->srvconf.pid_file, strerror(errno));
return -1;
}
if (0 != stat(srv->srvconf.pid_file->ptr, &st)) {
log_error_write(srv, __FILE__, __LINE__, "sbs",
"stating existing pid-file failed:", srv->srvconf.pid_file, strerror(errno));
}
if (!S_ISREG(st.st_mode)) {
log_error_write(srv, __FILE__, __LINE__, "sb",
"pid-file exists and isn't regular file:", srv->srvconf.pid_file);
return -1;
}
if (-1 == (pid_fd = open(srv->srvconf.pid_file->ptr, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH))) {
log_error_write(srv, __FILE__, __LINE__, "sbs",
"opening pid-file failed:", srv->srvconf.pid_file, strerror(errno));
return -1;
}
}
}
if (i_am_root) {
struct group *grp = NULL;
struct passwd *pwd = NULL;
int use_rlimit = 1;
#ifdef HAVE_VALGRIND_VALGRIND_H
if (RUNNING_ON_VALGRIND) use_rlimit = 0;
#endif
#ifdef HAVE_GETRLIMIT
if (0 != getrlimit(RLIMIT_NOFILE, &rlim)) {
log_error_write(srv, __FILE__, __LINE__,
"ss", "couldn't get 'max filedescriptors'",
strerror(errno));
return -1;
}
if (use_rlimit && srv->srvconf.max_fds) {
/* set rlimits */
rlim.rlim_cur = srv->srvconf.max_fds;
rlim.rlim_max = srv->srvconf.max_fds;
if (0 != setrlimit(RLIMIT_NOFILE, &rlim)) {
log_error_write(srv, __FILE__, __LINE__,
"ss", "couldn't set 'max filedescriptors'",
strerror(errno));
return -1;
}
}
srv->max_fds = rlim.rlim_cur;
#else
srv->max_fds = 4096;
#endif
if (NULL == (srv->ev = fdevent_init(srv->max_fds + 1, srv->event_handler))) {
log_error_write(srv, __FILE__, __LINE__,
"s", "fdevent_init failed");
return -1;
}
#ifdef HAVE_PWD_H
/* set user and group */
if (srv->srvconf.username->used) {
if (NULL == (pwd = getpwnam(srv->srvconf.username->ptr))) {
log_error_write(srv, __FILE__, __LINE__, "sb",
"can't find username", srv->srvconf.username);
return -1;
}
if (pwd->pw_uid == 0) {
log_error_write(srv, __FILE__, __LINE__, "s",
"I will not set uid to 0\n");
return -1;
}
}
if (srv->srvconf.groupname->used) {
if (NULL == (grp = getgrnam(srv->srvconf.groupname->ptr))) {
log_error_write(srv, __FILE__, __LINE__, "sb",
"can't find groupname", srv->srvconf.groupname);
return -1;
}
if (grp->gr_gid == 0) {
log_error_write(srv, __FILE__, __LINE__, "s",
"I will not set gid to 0\n");
return -1;
}
}
#endif
/* we need root-perms for port < 1024 */
if (0 != network_init(srv)) {
plugins_free(srv);
server_free(srv);
return -1;
}
#ifdef HAVE_CHROOT
if (srv->srvconf.changeroot->used) {
tzset();
if (-1 == chroot(srv->srvconf.changeroot->ptr)) {
log_error_write(srv, __FILE__, __LINE__, "ss", "chroot failed: ", strerror(errno));
return -1;
}
if (-1 == chdir("/")) {
log_error_write(srv, __FILE__, __LINE__, "ss", "chdir failed: ", strerror(errno));
return -1;
}
}
#endif
#ifdef HAVE_PWD_H
/* drop root privs */
if (srv->srvconf.groupname->used) {
setgid(grp->gr_gid);
setgroups(0, NULL);
}
if (srv->srvconf.username->used) setuid(pwd->pw_uid);
#endif
} else {
#ifdef HAVE_GETRLIMIT
if (0 != getrlimit(RLIMIT_NOFILE, &rlim)) {
log_error_write(srv, __FILE__, __LINE__,
"ss", "couldn't get 'max filedescriptors'",
strerror(errno));
return -1;
}
srv->max_fds = rlim.rlim_cur;
#else
srv->max_fds = 4096;
#endif
if (NULL == (srv->ev = fdevent_init(srv->max_fds + 1, srv->event_handler))) {
log_error_write(srv, __FILE__, __LINE__,
"s", "fdevent_init failed");
return -1;
}
if (0 != network_init(srv)) {
plugins_free(srv);
server_free(srv);
return -1;
}
}
if (HANDLER_GO_ON != plugins_call_init(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s", "Initialization of plugins failed. Going down.");
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
#ifdef HAVE_FORK
/* network is up, let's deamonize ourself */
if (srv->srvconf.dont_daemonize == 0) daemonize();
#endif
/* write pid file */
if (pid_fd != -1) {
buffer_copy_long(srv->tmp_buf, getpid());
buffer_append_string(srv->tmp_buf, "\n");
write(pid_fd, srv->tmp_buf->ptr, srv->tmp_buf->used - 1);
close(pid_fd);
pid_fd = -1;
}
if (HANDLER_GO_ON != plugins_call_set_defaults(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s", "Configuration of plugins failed. Going down.");
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
/* dump unused config-keys */
for (i = 0; srv->config && i < srv->config->used; i++) {
data_unset *du = srv->config->data[i];
if (NULL == array_get_element(srv->config_touched, du->key->ptr)) {
log_error_write(srv, __FILE__, __LINE__, "sbs",
"WARNING: unknown config-key:",
du->key,
"(ignored)");
}
}
if (srv->config_deprecated) {
log_error_write(srv, __FILE__, __LINE__, "s",
"Configuration contains deprecated keys. Going down.");
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
if (-1 == log_error_open(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s",
"opening errorlog failed, dying");
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
/* kqueue needs a reset AFTER daemonize() */
if (0 != network_register_fdevents(srv)) {
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
/* get the current number of FDs */
srv->cur_fds = open("/dev/null", O_RDONLY);
close(srv->cur_fds);
#ifdef HAVE_SIGACTION
memset(&act, 0, sizeof(act));
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, NULL);
sigaction(SIGUSR1, &act, NULL);
# if defined(SA_SIGINFO)
act.sa_sigaction = sigaction_handler;
sigemptyset(&act.sa_mask);
act.sa_flags = SA_SIGINFO;
# else
act.sa_handler = signal_handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
# endif
sigaction(SIGTERM, &act, NULL);
sigaction(SIGHUP, &act, NULL);
sigaction(SIGALRM, &act, NULL);
sigaction(SIGCHLD, &act, NULL);
#elif defined(HAVE_SIGNAL)
/* ignore the SIGPIPE from sendfile() */
signal(SIGPIPE, SIG_IGN);
signal(SIGUSR1, SIG_IGN);
signal(SIGALRM, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGHUP, signal_handler);
signal(SIGCHLD, signal_handler);
#endif
#ifdef USE_ALARM
signal(SIGALRM, signal_handler);
/* setup periodic timer (1 second) */
if (setitimer(ITIMER_REAL, &interval, NULL)) {
log_error_write(srv, __FILE__, __LINE__, "setting timer failed");
return -1;
}
getitimer(ITIMER_REAL, &interval);
#endif
#ifdef HAVE_FORK
/* start watcher and workers */
num_childs = srv->srvconf.max_worker;
if (num_childs > 0) {
int child = 0;
while (!child && !srv_shutdown) {
if (num_childs > 0) {
switch (fork()) {
case -1:
return -1;
case 0:
child = 1;
break;
default:
num_childs--;
break;
}
} else {
int status;
wait(&status);
num_childs++;
}
}
if (!child) return 0;
}
#endif
/* main-loop */
while (!srv_shutdown) {
int n;
size_t ndx;
time_t min_ts;
if (handle_sig_hup) {
handler_t r;
/* reset notification */
handle_sig_hup = 0;
/* cycle logfiles */
switch(r = plugins_call_handle_sighup(srv)) {
case HANDLER_GO_ON:
break;
default:
log_error_write(srv, __FILE__, __LINE__, "sd", "sighup-handler return with an error", r);
break;
}
if (-1 == log_error_cycle(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s", "cycling errorlog failed, dying");
return -1;
}
}
if (handle_sig_alarm) {
/* a new second */
#ifdef USE_ALARM
/* reset notification */
handle_sig_alarm = 0;
#endif
/* get current time */
min_ts = time(NULL);
if (min_ts != srv->cur_ts) {
int cs = 0;
connections *conns = srv->conns;
handler_t r;
switch(r = plugins_call_handle_trigger(srv)) {
case HANDLER_GO_ON:
break;
case HANDLER_ERROR:
log_error_write(srv, __FILE__, __LINE__, "s", "one of the triggers failed");
break;
default:
log_error_write(srv, __FILE__, __LINE__, "d", r);
break;
}
/* trigger waitpid */
srv->cur_ts = min_ts;
/**
* check all connections for timeouts
*
*/
for (ndx = 0; ndx < conns->used; ndx++) {
int changed = 0;
connection *con;
int t_diff;
con = conns->ptr[ndx];
if (con->state == CON_STATE_READ ||
con->state == CON_STATE_READ_POST) {
if (con->request_count == 1) {
if (srv->cur_ts - con->read_idle_ts > con->conf.max_read_idle) {
/* time - out */
#if 0
log_error_write(srv, __FILE__, __LINE__, "sd",
"connection closed - read-timeout:", con->fd);
#endif
connection_set_state(srv, con, CON_STATE_ERROR);
changed = 1;
}
} else {
if (srv->cur_ts - con->read_idle_ts > con->conf.max_keep_alive_idle) {
/* time - out */
#if 0
log_error_write(srv, __FILE__, __LINE__, "sd",
"connection closed - read-timeout:", con->fd);
#endif
connection_set_state(srv, con, CON_STATE_ERROR);
changed = 1;
}
}
}
if ((con->state == CON_STATE_WRITE) &&
(con->write_request_ts != 0)) {
#if 0
if (srv->cur_ts - con->write_request_ts > 60) {
log_error_write(srv, __FILE__, __LINE__, "sdd",
"connection closed - pre-write-request-timeout:", con->fd, srv->cur_ts - con->write_request_ts);
}
#endif
if (srv->cur_ts - con->write_request_ts > con->conf.max_write_idle) {
/* time - out */
#if 1
log_error_write(srv, __FILE__, __LINE__, "sd",
"connection closed - write-request-timeout:", con->fd);
#endif
connection_set_state(srv, con, CON_STATE_ERROR);
changed = 1;
}
}
/* we don't like div by zero */
if (0 == (t_diff = srv->cur_ts - con->connection_start)) t_diff = 1;
if (con->traffic_limit_reached &&
((con->bytes_written / t_diff) < con->conf.kbytes_per_second * 1024)) {
/* enable connection again */
con->traffic_limit_reached = 0;
changed = 1;
}
if (changed) {
connection_state_machine(srv, con);
}
con->bytes_written_cur_second = 0;
*(con->conf.global_bytes_per_second_cnt_ptr) = 0;
#if 0
if (cs == 0) {
fprintf(stderr, "connection-state: ");
cs = 1;
}
fprintf(stderr, "c[%d,%d]: %s ",
con->fd,
con->fcgi.fd,
connection_get_state(con->state));
#endif
}
if (cs == 1) fprintf(stderr, "\n");
}
}
/* handle out of fd condition */
if (!srv->sockets_disabled &&
srv->cur_fds + srv->want_fds > srv->max_fds * 0.9) {
/* disable server-fds */
for (i = 0; i < srv->srv_sockets.used; i++) {
server_socket *srv_socket = srv->srv_sockets.ptr[i];
fdevent_event_del(srv->ev, &(srv_socket->fde_ndx), srv_socket->fd);
}
log_error_write(srv, __FILE__, __LINE__, "s", "[note] sockets disabled, out-of-fds");
srv->sockets_disabled = 1;
} else if (srv->sockets_disabled &&
srv->cur_fds + srv->want_fds < srv->max_fds * 0.8) {
for (i = 0; i < srv->srv_sockets.used; i++) {
server_socket *srv_socket = srv->srv_sockets.ptr[i];
fdevent_event_add(srv->ev, &(srv_socket->fde_ndx), srv_socket->fd, FDEVENT_IN);
}
log_error_write(srv, __FILE__, __LINE__, "s", "[note] sockets enabled, out-of-fds");
srv->sockets_disabled = 0;
}
/* we still have some fds to share */
if (srv->want_fds) {
/* check the fdwaitqueue for waiting fds */
int free_fds = srv->max_fds - srv->cur_fds - 16;
connection *con;
for (; free_fds > 0 && NULL != (con = fdwaitqueue_unshift(srv, srv->fdwaitqueue)); free_fds--) {
connection_state_machine(srv, con);
srv->want_fds--;
}
}
if ((n = fdevent_poll(srv->ev, 1000)) > 0) {
/* n is the number of events */
int revents;
int fd_ndx;
#if 0
if (n > 0) {
log_error_write(srv, __FILE__, __LINE__, "sd",
"polls:", n);
}
#endif
fd_ndx = -1;
do {
fdevent_handler handler;
void *context;
handler_t r;
fd_ndx = fdevent_event_next_fdndx (srv->ev, fd_ndx);
revents = fdevent_event_get_revent (srv->ev, fd_ndx);
fd = fdevent_event_get_fd (srv->ev, fd_ndx);
handler = fdevent_get_handler(srv->ev, fd);
context = fdevent_get_context(srv->ev, fd);
/* connection_handle_fdevent needs a joblist_append */
#if 0
log_error_write(srv, __FILE__, __LINE__, "sdd",
"event for", fd, revents);
#endif
switch (r = (*handler)(srv, context, revents)) {
case HANDLER_FINISHED:
case HANDLER_GO_ON:
case HANDLER_WAIT_FOR_EVENT:
case HANDLER_WAIT_FOR_FD:
break;
case HANDLER_ERROR:
/* should never happen */
SEGFAULT();
break;
default:
log_error_write(srv, __FILE__, __LINE__, "d", r);
break;
}
} while (--n > 0);
} else if (n < 0 && errno != EINTR) {
log_error_write(srv, __FILE__, __LINE__, "ss",
"fdevent_poll failed:",
strerror(errno));
}
for (ndx = 0; ndx < srv->joblist->used; ndx++) {
connection *con = srv->joblist->ptr[ndx];
handler_t r;
connection_state_machine(srv, con);
switch(r = plugins_call_handle_joblist(srv, con)) {
case HANDLER_FINISHED:
case HANDLER_GO_ON:
break;
default:
log_error_write(srv, __FILE__, __LINE__, "d", r);
break;
}
con->in_joblist = 0;
}
srv->joblist->used = 0;
}
if (srv->srvconf.pid_file->used &&
srv->srvconf.changeroot->used == 0) {
if (0 != unlink(srv->srvconf.pid_file->ptr)) {
if (errno != EACCES && errno != EPERM) {
log_error_write(srv, __FILE__, __LINE__, "sbds",
"unlink failed for:",
srv->srvconf.pid_file,
errno,
strerror(errno));
}
}
}
/* clean-up */
log_error_close(srv);
network_close(srv);
plugins_free(srv);
server_free(srv);
return 0;
}