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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <nginx.h>
static int ngx_open_listening_sockets(ngx_log_t *log);
ngx_log_t ngx_log;
ngx_pool_t *ngx_pool;
void ****ngx_conf_ctx;
ngx_os_io_t ngx_io;
int ngx_max_module;
void *ctx_conf;
int ngx_connection_counter;
ngx_array_t ngx_listening_sockets;
int main(int argc, char *const *argv)
{
int i;
ngx_str_t conf_file;
ngx_log_t *log;
ngx_conf_t conf;
ngx_max_sockets = -1;
#if 0
ngx_log.fd = STDERR_FILENO;
ngx_log.log_level = NGX_LOG_INFO;
/* STUB */ ngx_log.log_level = NGX_LOG_DEBUG;
#endif
log = ngx_log_init_errlog();
if (ngx_os_init(log) == NGX_ERROR) {
return 1;
}
ngx_pool = ngx_create_pool(16 * 1024, log);
/* */
ngx_max_module = 0;
for (i = 0; ngx_modules[i]; i++) {
ngx_modules[i]->index = ngx_max_module++;
}
/* life cycle */
{
ngx_init_array(ngx_listening_sockets,
ngx_pool, 10, sizeof(ngx_listening_t),
1);
ngx_memzero(&conf, sizeof(ngx_conf_t));
ngx_test_null(conf.args,
ngx_create_array(ngx_pool, 10, sizeof(ngx_str_t)),
1);
ngx_test_null(ngx_conf_ctx,
ngx_pcalloc(ngx_pool, ngx_max_module * sizeof(void *)),
1);
conf.ctx = ngx_conf_ctx;
conf.pool = ngx_pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
conf_file.len = sizeof(NGINX_CONF) - 1;
conf_file.data = NGINX_CONF;
if (ngx_conf_parse(&conf, &conf_file) != NGX_CONF_OK) {
return 1;
}
#if 0
log = (ngx_log_t *) ngx_get_conf(ngx_errlog_module);
/* STUB */ log->log_level = NGX_LOG_DEBUG;
#endif
ngx_init_temp_number();
ngx_io = ngx_os_io;
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(ngx_pool) == NGX_ERROR) {
return 1;
}
}
}
if (ngx_open_listening_sockets(log) == NGX_ERROR) {
return 1;
}
/* TODO: daemon, once only */
/* TODO: fork */
ngx_pre_thread(&ngx_listening_sockets, ngx_pool, log);
/* TODO: threads */
/* STUB */
ngx_worker(log);
}
return 0;
}
static int ngx_open_listening_sockets(ngx_log_t *log)
{
int times, failed, reuseaddr, i;
ngx_err_t err;
ngx_socket_t s;
ngx_listening_t *ls;
reuseaddr = 1;
for (times = 10; times; times--) {
failed = 0;
/* for each listening socket */
ls = ngx_listening_sockets.elts;
for (i = 0; i < ngx_listening_sockets.nelts; i++) {
if (ls[i].bound)
continue;
if (ls[i].inherited) {
/* TODO: close on exit */
/* TODO: nonblocking */
/* TODO: deferred accept */
ls[i].bound = 1;
continue;
}
s = ngx_socket(ls[i].family, ls[i].type, ls[i].protocol,
ls[i].flags);
if (s == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_socket_n " %s falied", ls[i].addr_text.data);
return NGX_ERROR;
}
#if (WIN32)
/*
* Winsock assignes a socket number divisible by 4
* so to find a connection we divide a socket number by 4.
*/
if (s % 4) {
ngx_log_error(NGX_LOG_EMERG, ls->log, 0,
ngx_socket_n " created socket %d", s);
return NGX_ERROR;
}
#endif
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
(const void *) &reuseaddr, sizeof(int)) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
"setsockopt(SO_REUSEADDR) %s failed",
ls[i].addr_text.data);
return NGX_ERROR;
}
/* TODO: close on exit */
if (ls[i].nonblocking) {
if (ngx_nonblocking(s) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_nonblocking_n " %s failed",
ls[i].addr_text.data);
return NGX_ERROR;
}
}
if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
err = ngx_socket_errno;
ngx_log_error(NGX_LOG_EMERG, log, err,
"bind() to %s failed", ls[i].addr_text.data);
if (err != NGX_EADDRINUSE)
return NGX_ERROR;
if (ngx_close_socket(s) == -1)
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %s failed",
ls[i].addr_text.data);
failed = 1;
continue;
}
if (listen(s, ls[i].backlog) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
"listen() to %s failed", ls[i].addr_text.data);
return NGX_ERROR;
}
/* TODO: deferred accept */
ls[i].fd = s;
ls[i].bound = 1;
}
if (!failed)
break;
ngx_log_error(NGX_LOG_NOTICE, log, 0,
"try again to bind() after 500ms");
ngx_msleep(500);
}
if (failed) {
ngx_log_error(NGX_LOG_EMERG, log, 0, "can not bind(), exiting");
return NGX_ERROR;
}
return NGX_OK;
}
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