static int connection_handle_write_prepare(server *srv, connection *con) {
if (con->mode == DIRECT) {
/* static files */
switch(con->request.http_method) {
case HTTP_METHOD_GET:
case HTTP_METHOD_POST:
case HTTP_METHOD_HEAD:
break;
case HTTP_METHOD_OPTIONS:
/*
* 400 is coming from the request-parser BEFORE uri.path is set
* 403 is from the response handler when noone else catched it
*
* */
if ((!con->http_status || con->http_status == 200) && !buffer_string_is_empty(con->uri.path) &&
con->uri.path->ptr[0] != '*') {
response_header_insert(srv, con, CONST_STR_LEN("Allow"), CONST_STR_LEN("OPTIONS, GET, HEAD, POST"));
con->response.transfer_encoding &= ~HTTP_TRANSFER_ENCODING_CHUNKED;
con->parsed_response &= ~HTTP_CONTENT_LENGTH;
con->http_status = 200;
con->file_finished = 1;
chunkqueue_reset(con->write_queue);
}
break;
default:
if (0 == con->http_status) {
con->http_status = 501;
}
break;
}
}
if (con->http_status == 0) {
con->http_status = 403;
}
switch(con->http_status) {
case 204: /* class: header only */
case 205:
case 304:
/* disable chunked encoding again as we have no body */
con->response.transfer_encoding &= ~HTTP_TRANSFER_ENCODING_CHUNKED;
con->parsed_response &= ~HTTP_CONTENT_LENGTH;
chunkqueue_reset(con->write_queue);
con->file_finished = 1;
break;
default: /* class: header + body */
if (con->mode != DIRECT) break;
/* only custom body for 4xx and 5xx */
if (con->http_status < 400 || con->http_status >= 600) break;
con->file_finished = 0;
connection_handle_errdoc_init(srv, con);
/* try to send static errorfile */
if (!buffer_string_is_empty(con->conf.errorfile_prefix)) {
stat_cache_entry *sce = NULL;
buffer_copy_buffer(con->physical.path, con->conf.errorfile_prefix);
buffer_append_int(con->physical.path, con->http_status);
buffer_append_string_len(con->physical.path, CONST_STR_LEN(".html"));
if (0 == http_chunk_append_file(srv, con, con->physical.path)) {
con->file_finished = 1;
if (HANDLER_ERROR != stat_cache_get_entry(srv, con, con->physical.path, &sce)) {
response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_BUF_LEN(sce->content_type));
}
}
}
if (!con->file_finished) {
buffer *b;
buffer_reset(con->physical.path);
con->file_finished = 1;
b = buffer_init();
/* build default error-page */
buffer_copy_string_len(b, CONST_STR_LEN(
"<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n"
" <head>\n"
" <title>"));
buffer_append_int(b, con->http_status);
buffer_append_string_len(b, CONST_STR_LEN(" - "));
buffer_append_string(b, get_http_status_name(con->http_status));
buffer_append_string_len(b, CONST_STR_LEN(
"</title>\n"
" </head>\n"
" <body>\n"
" <h1>"));
buffer_append_int(b, con->http_status);
buffer_append_string_len(b, CONST_STR_LEN(" - "));
buffer_append_string(b, get_http_status_name(con->http_status));
buffer_append_string_len(b, CONST_STR_LEN("</h1>\n"
" </body>\n"
"</html>\n"
));
(void)http_chunk_append_buffer(srv, con, b);
buffer_free(b);
response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
}
break;
}
/* Allow filter plugins to change response headers before they are written. */
switch(plugins_call_handle_response_start(srv, con)) {
case HANDLER_GO_ON:
case HANDLER_FINISHED:
break;
default:
log_error_write(srv, __FILE__, __LINE__, "s", "response_start plugin failed");
return -1;
}
if (con->file_finished) {
/* we have all the content and chunked encoding is not used, set a content-length */
if ((!(con->parsed_response & HTTP_CONTENT_LENGTH)) &&
(con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) == 0) {
off_t qlen = chunkqueue_length(con->write_queue);
/**
* The Content-Length header only can be sent if we have content:
* - HEAD doesn't have a content-body (but have a content-length)
* - 1xx, 204 and 304 don't have a content-body (RFC 2616 Section 4.3)
*
* Otherwise generate a Content-Length header as chunked encoding is not
* available
*/
if ((con->http_status >= 100 && con->http_status < 200) ||
con->http_status == 204 ||
con->http_status == 304) {
data_string *ds;
/* no Content-Body, no Content-Length */
if (NULL != (ds = (data_string*) array_get_element(con->response.headers, "Content-Length"))) {
buffer_reset(ds->value); /* Headers with empty values are ignored for output */
}
} else if (qlen > 0 || con->request.http_method != HTTP_METHOD_HEAD) {
/* qlen = 0 is important for Redirects (301, ...) as they MAY have
* a content. Browsers are waiting for a Content otherwise
*/
buffer_copy_int(srv->tmp_buf, qlen);
response_header_overwrite(srv, con, CONST_STR_LEN("Content-Length"), CONST_BUF_LEN(srv->tmp_buf));
}
}
} else {
/**
* the file isn't finished yet, but we have all headers
*
* to get keep-alive we either need:
* - Content-Length: ... (HTTP/1.0 and HTTP/1.0) or
* - Transfer-Encoding: chunked (HTTP/1.1)
*/
if (((con->parsed_response & HTTP_CONTENT_LENGTH) == 0) &&
((con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) == 0)) {
if (con->request.http_version == HTTP_VERSION_1_1) {
off_t qlen = chunkqueue_length(con->write_queue);
con->response.transfer_encoding = HTTP_TRANSFER_ENCODING_CHUNKED;
if (qlen) {
/* create initial Transfer-Encoding: chunked segment */
buffer *b = srv->tmp_chunk_len;
buffer_string_set_length(b, 0);
buffer_append_uint_hex(b, (uintmax_t)qlen);
buffer_append_string_len(b, CONST_STR_LEN("\r\n"));
chunkqueue_prepend_buffer(con->write_queue, b);
chunkqueue_append_mem(con->write_queue, CONST_STR_LEN("\r\n"));
}
} else {
con->keep_alive = 0;
}
}
/**
* if the backend sent a Connection: close, follow the wish
*
* NOTE: if the backend sent Connection: Keep-Alive, but no Content-Length, we
* will close the connection. That's fine. We can always decide the close
* the connection
*
* FIXME: to be nice we should remove the Connection: ...
*/
if (con->parsed_response & HTTP_CONNECTION) {
/* a subrequest disable keep-alive although the client wanted it */
if (con->keep_alive && !con->response.keep_alive) {
con->keep_alive = 0;
}
}
}
if (con->request.http_method == HTTP_METHOD_HEAD) {
/**
* a HEAD request has the same as a GET
* without the content
*/
con->file_finished = 1;
chunkqueue_reset(con->write_queue);
con->response.transfer_encoding &= ~HTTP_TRANSFER_ENCODING_CHUNKED;
}
http_response_write_header(srv, con);
return 0;
}
int main (int argc, char **argv) {
server *srv = NULL;
int print_config = 0;
int test_config = 0;
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 happen?\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;
#ifdef APP_IPKG
if(!access("/etc/server.pem",F_OK)){
}
else{
start_ssl();
}
#endif
while(-1 != (o = getopt(argc, argv, "f:m:hvVDpt"))) {
switch(o) {
case 'f':
if (srv->config_storage) {
log_error_write(srv, __FILE__, __LINE__, "s",
"Can only read one config file. Use the include command to use multiple config files.");
server_free(srv);
return -1;
}
if (config_read(srv, optarg)) {
server_free(srv);
return -1;
}
break;
case 'm':
buffer_copy_string(srv->srvconf.modules_dir, optarg);
break;
case 'p': print_config = 1; break;
case 't': test_config = 1; break;
case 'D': srv->srvconf.dont_daemonize = 1; break;
case 'v': show_version(); return 0;
case 'V': show_features(); 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;
}
if (print_config) {
data_unset *dc = srv->config_context->data[0];
if (dc) {
dc->print(dc, 0);
fprintf(stdout, "\n");
} else {
/* shouldn't happend */
fprintf(stderr, "global config not found\n");
}
}
if (test_config) {
printf("Syntax OK\n");
}
if (test_config || print_config) {
server_free(srv);
return 0;
}
/* close stdin and stdout, as they are not needed */
openDevNull(STDIN_FILENO);
openDevNull(STDOUT_FILENO);
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 && issetugid()) {
/* 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 (buffer_string_is_empty(srv->config_storage[0]->document_root)) {
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 (!buffer_string_is_empty(srv->srvconf.pid_file)) {
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 (srv->event_handler == FDEVENT_HANDLER_SELECT) {
/* select limits itself
*
* as it is a hard limit and will lead to a segfault we add some safety
* */
srv->max_fds = FD_SETSIZE - 200;
} else {
srv->max_fds = 4096;
}
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;
}
}
if (srv->event_handler == FDEVENT_HANDLER_SELECT) {
srv->max_fds = rlim.rlim_cur < ((int)FD_SETSIZE) - 200 ? rlim.rlim_cur : FD_SETSIZE - 200;
} else {
srv->max_fds = rlim.rlim_cur;
}
/* set core file rlimit, if enable_cores is set */
if (use_rlimit && srv->srvconf.enable_cores && getrlimit(RLIMIT_CORE, &rlim) == 0) {
rlim.rlim_cur = rlim.rlim_max;
setrlimit(RLIMIT_CORE, &rlim);
}
#endif
if (srv->event_handler == FDEVENT_HANDLER_SELECT) {
/* don't raise the limit above FD_SET_SIZE */
if (srv->max_fds > ((int)FD_SETSIZE) - 200) {
log_error_write(srv, __FILE__, __LINE__, "sd",
"can't raise max filedescriptors above", FD_SETSIZE - 200,
"if event-handler is 'select'. Use 'poll' or something else or reduce server.max-fds.");
return -1;
}
}
#ifdef HAVE_PWD_H
/* set user and group */
if (!buffer_string_is_empty(srv->srvconf.username)) {
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 (!buffer_string_is_empty(srv->srvconf.groupname)) {
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_PWD_H
/*
* Change group before chroot, when we have access
* to /etc/group
* */
if (NULL != grp) {
if (-1 == setgid(grp->gr_gid)) {
log_error_write(srv, __FILE__, __LINE__, "ss", "setgid failed: ", strerror(errno));
return -1;
}
if (-1 == setgroups(0, NULL)) {
log_error_write(srv, __FILE__, __LINE__, "ss", "setgroups failed: ", strerror(errno));
return -1;
}
if (!buffer_string_is_empty(srv->srvconf.username)) {
initgroups(srv->srvconf.username->ptr, grp->gr_gid);
}
}
#endif
#ifdef HAVE_CHROOT
if (!buffer_string_is_empty(srv->srvconf.changeroot)) {
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 (NULL != pwd) {
if (-1 == setuid(pwd->pw_uid)) {
log_error_write(srv, __FILE__, __LINE__, "ss", "setuid failed: ", strerror(errno));
return -1;
}
}
#endif
#if defined(HAVE_SYS_PRCTL_H) && defined(PR_SET_DUMPABLE)
/**
* on IRIX 6.5.30 they have prctl() but no DUMPABLE
*/
if (srv->srvconf.enable_cores) {
prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
}
#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;
}
/**
* we are not root can can't increase the fd-limit, but we can reduce it
*/
if (srv->srvconf.max_fds && srv->srvconf.max_fds < rlim.rlim_cur) {
/* set rlimits */
rlim.rlim_cur = 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;
}
}
if (srv->event_handler == FDEVENT_HANDLER_SELECT) {
srv->max_fds = rlim.rlim_cur < ((int)FD_SETSIZE) - 200 ? rlim.rlim_cur : FD_SETSIZE - 200;
} else {
srv->max_fds = rlim.rlim_cur;
}
/* set core file rlimit, if enable_cores is set */
if (srv->srvconf.enable_cores && getrlimit(RLIMIT_CORE, &rlim) == 0) {
rlim.rlim_cur = rlim.rlim_max;
setrlimit(RLIMIT_CORE, &rlim);
}
#endif
if (srv->event_handler == FDEVENT_HANDLER_SELECT) {
/* don't raise the limit above FD_SET_SIZE */
if (srv->max_fds > ((int)FD_SETSIZE) - 200) {
log_error_write(srv, __FILE__, __LINE__, "sd",
"can't raise max filedescriptors above", FD_SETSIZE - 200,
"if event-handler is 'select'. Use 'poll' or something else or reduce server.max-fds.");
return -1;
}
}
if (0 != network_init(srv)) {
plugins_free(srv);
server_free(srv);
return -1;
}
}
/* set max-conns */
if (srv->srvconf.max_conns > srv->max_fds/2) {
/* we can't have more connections than max-fds/2 */
log_error_write(srv, __FILE__, __LINE__, "sdd", "can't have more connections than fds/2: ", srv->srvconf.max_conns, srv->max_fds);
srv->max_conns = srv->max_fds/2;
} else if (srv->srvconf.max_conns) {
/* otherwise respect the wishes of the user */
srv->max_conns = srv->srvconf.max_conns;
} else {
/* or use the default: we really don't want to hit max-fds */
srv->max_conns = srv->max_fds/3;
}
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
#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(SIGINT, &act, NULL);
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);
signal(SIGINT, signal_handler);
#endif
#if EMBEDDED_EANBLE
sigset_t sigs_to_catch;
/* set the signal handler */
sigemptyset(&sigs_to_catch);
sigaddset(&sigs_to_catch, SIGTERM);
sigaddset(&sigs_to_catch, SIGUSR2);
sigprocmask(SIG_UNBLOCK, &sigs_to_catch, NULL);
signal(SIGTERM, sigaction_handler);
//- 20121108 Sungmin add
signal(SIGUSR2, sigaction_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__, "s", "setting timer failed");
return -1;
}
getitimer(ITIMER_REAL, &interval);
#endif
srv->gid = getgid();
srv->uid = getuid();
/* write pid file */
if (pid_fd != -1) {
buffer_copy_int(srv->tmp_buf, getpid());
buffer_append_string_len(srv->tmp_buf, CONST_STR_LEN("\n"));
if (-1 == write_all(pid_fd, CONST_BUF_LEN(srv->tmp_buf))) {
log_error_write(srv, __FILE__, __LINE__, "ss", "Couldn't write pid file:", strerror(errno));
close(pid_fd);
return -1;
}
close(pid_fd);
pid_fd = -1;
}
/* Close stderr ASAP in the child process to make sure that nothing
* is being written to that fd which may not be valid anymore. */
if (-1 == log_error_open(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s", "Opening errorlog failed. Going down.");
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
//- Sungmin add
if (-1 == log_sys_open(srv)) {
log_error_write(srv, __FILE__, __LINE__, "s", "Opening syslog failed. Going down.");
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
#if EMBEDDED_EANBLE
#ifndef APP_IPKG
buffer_copy_string( srv->last_login_info, nvram_get_webdav_last_login_info() );
buffer_copy_string( srv->cur_login_info, nvram_get_webdav_last_login_info() );
#else
char *last_login_info = nvram_get_webdav_last_login_info();
fprintf(stderr,"last_login_info=%s\n",last_login_info);
if(last_login_info == NULL || *last_login_info == '(')
{
fprintf(stderr,"111\n");
}
else
{
buffer_copy_string( srv->last_login_info, last_login_info);
buffer_copy_string( srv->cur_login_info, last_login_info);
free(last_login_info);
}
#endif
#else
buffer_copy_string( srv->last_login_info, "admin>2012/08/08 18:28:28>100.100.100.100" );
buffer_copy_string( srv->cur_login_info, "admin>2012/08/08 18:28:28>100.100.100.100" );
#endif
//////////////////////////////////////////////////////////////////////////////////////////
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; i < srv->config_context->used; i++) {
array *config = ((data_config *)srv->config_context->data[i])->value;
size_t j;
for (j = 0; config && j < config->used; j++) {
data_unset *du = config->data[j];
/* all var.* is known as user defined variable */
if (strncmp(du->key->ptr, "var.", sizeof("var.") - 1) == 0) {
continue;
}
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_unsupported) {
log_error_write(srv, __FILE__, __LINE__, "s",
"Configuration contains unsupported keys. Going down.");
}
if (srv->config_deprecated) {
log_error_write(srv, __FILE__, __LINE__, "s",
"Configuration contains deprecated keys. Going down.");
}
if (srv->config_unsupported || srv->config_deprecated) {
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
#ifdef HAVE_FORK
/* start watcher and workers */
num_childs = srv->srvconf.max_worker;
if (num_childs > 0) {
int child = 0;
while (!child && !srv_shutdown && !graceful_shutdown) {
if (num_childs > 0) {
switch (fork()) {
case -1:
return -1;
case 0:
child = 1;
break;
default:
num_childs--;
break;
}
} else {
int status;
if (-1 != wait(&status)) {
/**
* one of our workers went away
*/
num_childs++;
} else {
switch (errno) {
case EINTR:
/**
* if we receive a SIGHUP we have to close our logs ourself as we don't
* have the mainloop who can help us here
*/
if (handle_sig_hup) {
handle_sig_hup = 0;
log_error_cycle(srv);
/**
* forward to all procs in the process-group
*
* we also send it ourself
*/
if (!forwarded_sig_hup) {
forwarded_sig_hup = 1;
kill(0, SIGHUP);
}
}
break;
default:
break;
}
}
}
}
/**
* for the parent this is the exit-point
*/
if (!child) {
/**
* kill all children too
*/
if (graceful_shutdown) {
kill(0, SIGINT);
} else if (srv_shutdown) {
kill(0, SIGTERM);
}
log_error_close(srv);
network_close(srv);
connections_free(srv);
plugins_free(srv);
server_free(srv);
return 0;
}
}
#endif
if (NULL == (srv->ev = fdevent_init(srv, srv->max_fds + 1, srv->event_handler))) {
log_error_write(srv, __FILE__, __LINE__,
"s", "fdevent_init failed");
return -1;
}
/* libev backend overwrites our SIGCHLD handler and calls waitpid on SIGCHLD; we want our own SIGCHLD handling. */
#ifdef HAVE_SIGACTION
sigaction(SIGCHLD, &act, NULL);
#elif defined(HAVE_SIGNAL)
signal(SIGCHLD, signal_handler);
#endif
/*
* kqueue() is called here, select resets its internals,
* all server sockets get their handlers
*
* */
if (0 != network_register_fdevents(srv)) {
plugins_free(srv);
network_close(srv);
server_free(srv);
return -1;
}
/* might fail if user is using fam (not gamin) and famd isn't running */
if (NULL == (srv->stat_cache = stat_cache_init())) {
log_error_write(srv, __FILE__, __LINE__, "s",
"stat-cache could not be setup, dieing.");
return -1;
}
#ifdef HAVE_FAM_H
/* setup FAM */
if (srv->srvconf.stat_cache_engine == STAT_CACHE_ENGINE_FAM) {
if (0 != FAMOpen2(&srv->stat_cache->fam, "lighttpd")) {
log_error_write(srv, __FILE__, __LINE__, "s",
"could not open a fam connection, dieing.");
return -1;
}
#ifdef HAVE_FAMNOEXISTS
FAMNoExists(&srv->stat_cache->fam);
#endif
fdevent_register(srv->ev, FAMCONNECTION_GETFD(&srv->stat_cache->fam), stat_cache_handle_fdevent, NULL);
fdevent_event_set(srv->ev, &(srv->stat_cache->fam_fcce_ndx), FAMCONNECTION_GETFD(&srv->stat_cache->fam), FDEVENT_IN);
}
#endif
/* get the current number of FDs */
srv->cur_fds = open("/dev/null", O_RDONLY);
close(srv->cur_fds);
for (i = 0; i < srv->srv_sockets.used; i++) {
server_socket *srv_socket = srv->srv_sockets.ptr[i];
if (-1 == fdevent_fcntl_set(srv->ev, srv_socket->fd)) {
log_error_write(srv, __FILE__, __LINE__, "ss", "fcntl failed:", strerror(errno));
return -1;
}
}
/* 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;
} else {
#ifdef HAVE_SIGACTION
log_error_write(srv, __FILE__, __LINE__, "sdsd",
"logfiles cycled UID =",
last_sighup_info.si_uid,
"PID =",
last_sighup_info.si_pid);
#else
log_error_write(srv, __FILE__, __LINE__, "s",
"logfiles cycled");
#endif
}
}
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) {
#ifdef DEBUG_CONNECTION_STATES
int cs = 0;
#endif
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;
/* cleanup stat-cache */
stat_cache_trigger_cleanup(srv);
/**
* 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 || con->state == CON_STATE_READ_POST) {
if (srv->cur_ts - con->read_idle_ts > con->conf.max_read_idle) {
/* time - out */
if (con->conf.log_request_handling) {
log_error_write(srv, __FILE__, __LINE__, "sd",
"connection closed - read timeout:", con->fd);
}
connection_set_state(srv, con, CON_STATE_ERROR);
changed = 1;
}
} else {
if (srv->cur_ts - con->read_idle_ts > con->keep_alive_idle) {
/* time - out */
if (con->conf.log_request_handling) {
log_error_write(srv, __FILE__, __LINE__, "sd",
"connection closed - keep-alive timeout:", con->fd);
}
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 (con->conf.log_timeouts) {
log_error_write(srv, __FILE__, __LINE__, "sbsosds",
"NOTE: a request for",
con->request.uri,
"timed out after writing",
con->bytes_written,
"bytes. We waited",
(int)con->conf.max_write_idle,
"seconds. If this a problem increase server.max-write-idle");
}
connection_set_state(srv, con, CON_STATE_ERROR);
changed = 1;
}
}
if (con->state == CON_STATE_CLOSE && (srv->cur_ts - con->close_timeout_ts > HTTP_LINGER_TIMEOUT)) {
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->conf.kbytes_per_second == 0 ||
((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 DEBUG_CONNECTION_STATES
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
}
#ifdef DEBUG_CONNECTION_STATES
if (cs == 1) fprintf(stderr, "\n");
#endif
}
}
if (srv->sockets_disabled) {
/* our server sockets are disabled, why ? */
if ((srv->cur_fds + srv->want_fds < srv->max_fds * 8 / 10) && /* we have enough unused fds */
(srv->conns->used <= srv->max_conns * 9 / 10) &&
(0 == graceful_shutdown)) {
for (i = 0; i < srv->srv_sockets.used; i++) {
server_socket *srv_socket = srv->srv_sockets.ptr[i];
fdevent_event_set(srv->ev, &(srv_socket->fde_ndx), srv_socket->fd, FDEVENT_IN);
}
log_error_write(srv, __FILE__, __LINE__, "s", "[note] sockets enabled again");
srv->sockets_disabled = 0;
}
} else {
if ((srv->cur_fds + srv->want_fds > srv->max_fds * 9 / 10) || /* out of fds */
(srv->conns->used >= srv->max_conns) || /* out of connections */
(graceful_shutdown)) { /* graceful_shutdown */
/* 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);
if (graceful_shutdown) {
/* we don't want this socket anymore,
*
* closing it right away will make it possible for
* the next lighttpd to take over (graceful restart)
* */
fdevent_unregister(srv->ev, srv_socket->fd);
close(srv_socket->fd);
srv_socket->fd = -1;
/* network_close() will cleanup after us */
if (!buffer_string_is_empty(srv->srvconf.pid_file) &&
buffer_string_is_empty(srv->srvconf.changeroot)) {
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));
}
}
}
}
}
if (graceful_shutdown) {
log_error_write(srv, __FILE__, __LINE__, "s", "[note] graceful shutdown started");
} else if (srv->conns->used >= srv->max_conns) {
log_error_write(srv, __FILE__, __LINE__, "s", "[note] sockets disabled, connection limit reached");
} else {
log_error_write(srv, __FILE__, __LINE__, "s", "[note] sockets disabled, out-of-fds");
}
srv->sockets_disabled = 1;
}
}
if (graceful_shutdown && srv->conns->used == 0) {
/* we are in graceful shutdown phase and all connections are closed
* we are ready to terminate without harming anyone */
srv_shutdown = 1;
}
/* 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);
if (-1 == fd_ndx) break; /* not all fdevent handlers know how many fds got an event */
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 (!buffer_string_is_empty(srv->srvconf.pid_file) &&
buffer_string_is_empty(srv->srvconf.changeroot) &&
0 == graceful_shutdown) {
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));
}
}
}
#ifdef HAVE_SIGACTION
log_error_write(srv, __FILE__, __LINE__, "sdsd",
"server stopped by UID =",
last_sigterm_info.si_uid,
"PID =",
last_sigterm_info.si_pid);
#else
log_error_write(srv, __FILE__, __LINE__, "s",
"server stopped");
#endif
/* clean-up */
log_error_close(srv);
network_close(srv);
connections_free(srv);
plugins_free(srv);
server_free(srv);
return 0;
}