/*
* Copyright (C) Roman Arutyunyan
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_stream.h>
static char *ngx_stream_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_int_t ngx_stream_init_phases(ngx_conf_t *cf,
ngx_stream_core_main_conf_t *cmcf);
static ngx_int_t ngx_stream_init_phase_handlers(ngx_conf_t *cf,
ngx_stream_core_main_conf_t *cmcf);
static ngx_int_t ngx_stream_add_addresses(ngx_conf_t *cf,
ngx_stream_core_srv_conf_t *cscf, ngx_stream_conf_port_t *port,
ngx_stream_listen_opt_t *lsopt);
static ngx_int_t ngx_stream_add_address(ngx_conf_t *cf,
ngx_stream_core_srv_conf_t *cscf, ngx_stream_conf_port_t *port,
ngx_stream_listen_opt_t *lsopt);
static ngx_int_t ngx_stream_add_server(ngx_conf_t *cf,
ngx_stream_core_srv_conf_t *cscf, ngx_stream_conf_addr_t *addr);
static ngx_int_t ngx_stream_optimize_servers(ngx_conf_t *cf,
ngx_stream_core_main_conf_t *cmcf, ngx_array_t *ports);
static ngx_int_t ngx_stream_server_names(ngx_conf_t *cf,
ngx_stream_core_main_conf_t *cmcf, ngx_stream_conf_addr_t *addr);
static ngx_int_t ngx_stream_cmp_conf_addrs(const void *one, const void *two);
static int ngx_libc_cdecl ngx_stream_cmp_dns_wildcards(const void *one,
const void *two);
static ngx_int_t ngx_stream_init_listening(ngx_conf_t *cf,
ngx_stream_conf_port_t *port);
static ngx_listening_t *ngx_stream_add_listening(ngx_conf_t *cf,
ngx_stream_conf_addr_t *addr);
static ngx_int_t ngx_stream_add_addrs(ngx_conf_t *cf, ngx_stream_port_t *stport,
ngx_stream_conf_addr_t *addr);
#if (NGX_HAVE_INET6)
static ngx_int_t ngx_stream_add_addrs6(ngx_conf_t *cf,
ngx_stream_port_t *stport, ngx_stream_conf_addr_t *addr);
#endif
ngx_uint_t ngx_stream_max_module;
ngx_stream_filter_pt ngx_stream_top_filter;
static ngx_command_t ngx_stream_commands[] = {
{ ngx_string("stream"),
NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
ngx_stream_block,
0,
0,
NULL },
ngx_null_command
};
static ngx_core_module_t ngx_stream_module_ctx = {
ngx_string("stream"),
NULL,
NULL
};
ngx_module_t ngx_stream_module = {
NGX_MODULE_V1,
&ngx_stream_module_ctx, /* module context */
ngx_stream_commands, /* module directives */
NGX_CORE_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static char *
ngx_stream_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
char *rv;
ngx_uint_t mi, m, s;
ngx_conf_t pcf;
ngx_stream_module_t *module;
ngx_stream_conf_ctx_t *ctx;
ngx_stream_core_srv_conf_t **cscfp;
ngx_stream_core_main_conf_t *cmcf;
if (*(ngx_stream_conf_ctx_t **) conf) {
return "is duplicate";
}
/* the main stream context */
ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_conf_ctx_t));
if (ctx == NULL) {
return NGX_CONF_ERROR;
}
*(ngx_stream_conf_ctx_t **) conf = ctx;
/* count the number of the stream modules and set up their indices */
ngx_stream_max_module = ngx_count_modules(cf->cycle, NGX_STREAM_MODULE);
/* the stream main_conf context, it's the same in the all stream contexts */
ctx->main_conf = ngx_pcalloc(cf->pool,
sizeof(void *) * ngx_stream_max_module);
if (ctx->main_conf == NULL) {
return NGX_CONF_ERROR;
}
/*
* the stream null srv_conf context, it is used to merge
* the server{}s' srv_conf's
*/
ctx->srv_conf = ngx_pcalloc(cf->pool,
sizeof(void *) * ngx_stream_max_module);
if (ctx->srv_conf == NULL) {
return NGX_CONF_ERROR;
}
/*
* create the main_conf's and the null srv_conf's of the all stream modules
*/
for (m = 0; cf->cycle->modules[m]; m++) {
if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) {
continue;
}
module = cf->cycle->modules[m]->ctx;
mi = cf->cycle->modules[m]->ctx_index;
if (module->create_main_conf) {
ctx->main_conf[mi] = module->create_main_conf(cf);
if (ctx->main_conf[mi] == NULL) {
return NGX_CONF_ERROR;
}
}
if (module->create_srv_conf) {
ctx->srv_conf[mi] = module->create_srv_conf(cf);
if (ctx->srv_conf[mi] == NULL) {
return NGX_CONF_ERROR;
}
}
}
pcf = *cf;
cf->ctx = ctx;
for (m = 0; cf->cycle->modules[m]; m++) {
if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) {
continue;
}
module = cf->cycle->modules[m]->ctx;
if (module->preconfiguration) {
if (module->preconfiguration(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
}
/* parse inside the stream{} block */
cf->module_type = NGX_STREAM_MODULE;
cf->cmd_type = NGX_STREAM_MAIN_CONF;
rv = ngx_conf_parse(cf, NULL);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
/* init stream{} main_conf's, merge the server{}s' srv_conf's */
cmcf = ctx->main_conf[ngx_stream_core_module.ctx_index];
cscfp = cmcf->servers.elts;
for (m = 0; cf->cycle->modules[m]; m++) {
if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) {
continue;
}
module = cf->cycle->modules[m]->ctx;
mi = cf->cycle->modules[m]->ctx_index;
/* init stream{} main_conf's */
cf->ctx = ctx;
if (module->init_main_conf) {
rv = module->init_main_conf(cf, ctx->main_conf[mi]);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
}
for (s = 0; s < cmcf->servers.nelts; s++) {
/* merge the server{}s' srv_conf's */
cf->ctx = cscfp[s]->ctx;
if (module->merge_srv_conf) {
rv = module->merge_srv_conf(cf,
ctx->srv_conf[mi],
cscfp[s]->ctx->srv_conf[mi]);
if (rv != NGX_CONF_OK) {
*cf = pcf;
return rv;
}
}
}
}
if (ngx_stream_init_phases(cf, cmcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
for (m = 0; cf->cycle->modules[m]; m++) {
if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) {
continue;
}
module = cf->cycle->modules[m]->ctx;
if (module->postconfiguration) {
if (module->postconfiguration(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
}
}
if (ngx_stream_variables_init_vars(cf) != NGX_OK) {
return NGX_CONF_ERROR;
}
*cf = pcf;
if (ngx_stream_init_phase_handlers(cf, cmcf) != NGX_OK) {
return NGX_CONF_ERROR;
}
/* optimize the lists of ports, addresses and server names */
if (ngx_stream_optimize_servers(cf, cmcf, cmcf->ports) != NGX_OK) {
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
static ngx_int_t
ngx_stream_init_phases(ngx_conf_t *cf, ngx_stream_core_main_conf_t *cmcf)
{
if (ngx_array_init(&cmcf->phases[NGX_STREAM_POST_ACCEPT_PHASE].handlers,
cf->pool, 1, sizeof(ngx_stream_handler_pt))
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_array_init(&cmcf->phases[NGX_STREAM_PREACCESS_PHASE].handlers,
cf->pool, 1, sizeof(ngx_stream_handler_pt))
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_array_init(&cmcf->phases[NGX_STREAM_ACCESS_PHASE].handlers,
cf->pool, 1, sizeof(ngx_stream_handler_pt))
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_array_init(&cmcf->phases[NGX_STREAM_SSL_PHASE].handlers,
cf->pool, 1, sizeof(ngx_stream_handler_pt))
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_array_init(&cmcf->phases[NGX_STREAM_PREREAD_PHASE].handlers,
cf->pool, 1, sizeof(ngx_stream_handler_pt))
!= NGX_OK)
{
return NGX_ERROR;
}
if (ngx_array_init(&cmcf->phases[NGX_STREAM_LOG_PHASE].handlers,
cf->pool, 1, sizeof(ngx_stream_handler_pt))
!= NGX_OK)
{
return NGX_ERROR;
}
return NGX_OK;
}
static ngx_int_t
ngx_stream_init_phase_handlers(ngx_conf_t *cf,
ngx_stream_core_main_conf_t *cmcf)
{
ngx_int_t j;
ngx_uint_t i, n;
ngx_stream_handler_pt *h;
ngx_stream_phase_handler_t *ph;
ngx_stream_phase_handler_pt checker;
n = 1 /* content phase */;
for (i = 0; i < NGX_STREAM_LOG_PHASE; i++) {
n += cmcf->phases[i].handlers.nelts;
}
ph = ngx_pcalloc(cf->pool,
n * sizeof(ngx_stream_phase_handler_t) + sizeof(void *));
if (ph == NULL) {
return NGX_ERROR;
}
cmcf->phase_engine.handlers = ph;
n = 0;
for (i = 0; i < NGX_STREAM_LOG_PHASE; i++) {
h = cmcf->phases[i].handlers.elts;
switch (i) {
case NGX_STREAM_PREREAD_PHASE:
checker = ngx_stream_core_preread_phase;
break;
case NGX_STREAM_CONTENT_PHASE:
ph->checker = ngx_stream_core_content_phase;
n++;
ph++;
continue;
default:
checker = ngx_stream_core_generic_phase;
}
n += cmcf->phases[i].handlers.nelts;
for (j = cmcf->phases[i].handlers.nelts - 1; j >= 0; j--) {
ph->checker = checker;
ph->handler = h[j];
ph->next = n;
ph++;
}
}
return NGX_OK;
}
ngx_int_t
ngx_stream_add_listen(ngx_conf_t *cf, ngx_stream_core_srv_conf_t *cscf,
ngx_stream_listen_opt_t *lsopt)
{
in_port_t p;
ngx_uint_t i;
struct sockaddr *sa;
ngx_stream_conf_port_t *port;
ngx_stream_core_main_conf_t *cmcf;
cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module);
if (cmcf->ports == NULL) {
cmcf->ports = ngx_array_create(cf->temp_pool, 2,
sizeof(ngx_stream_conf_port_t));
if (cmcf->ports == NULL) {
return NGX_ERROR;
}
}
sa = lsopt->sockaddr;
p = ngx_inet_get_port(sa);
port = cmcf->ports->elts;
for (i = 0; i < cmcf->ports->nelts; i++) {
if (p != port[i].port
|| lsopt->type != port[i].type
|| sa->sa_family != port[i].family)
{
continue;
}
/* a port is already in the port list */
return ngx_stream_add_addresses(cf, cscf, &port[i], lsopt);
}
/* add a port to the port list */
port = ngx_array_push(cmcf->ports);
if (port == NULL) {
return NGX_ERROR;
}
port->family = sa->sa_family;
port->type = lsopt->type;
port->port = p;
port->addrs.elts = NULL;
return ngx_stream_add_address(cf, cscf, port, lsopt);
}
static ngx_int_t
ngx_stream_add_addresses(ngx_conf_t *cf, ngx_stream_core_srv_conf_t *cscf,
ngx_stream_conf_port_t *port, ngx_stream_listen_opt_t *lsopt)
{
ngx_uint_t i, default_server, proxy_protocol,
protocols, protocols_prev;
ngx_stream_conf_addr_t *addr;
#if (NGX_STREAM_SSL)
ngx_uint_t ssl;
#endif
/*
* we cannot compare whole sockaddr struct's as kernel
* may fill some fields in inherited sockaddr struct's
*/
addr = port->addrs.elts;
for (i = 0; i < port->addrs.nelts; i++) {
if (ngx_cmp_sockaddr(lsopt->sockaddr, lsopt->socklen,
addr[i].opt.sockaddr,
addr[i].opt.socklen, 0)
!= NGX_OK)
{
continue;
}
/* the address is already in the address list */
if (ngx_stream_add_server(cf, cscf, &addr[i]) != NGX_OK) {
return NGX_ERROR;
}
/* preserve default_server bit during listen options overwriting */
default_server = addr[i].opt.default_server;
proxy_protocol = lsopt->proxy_protocol || addr[i].opt.proxy_protocol;
protocols = lsopt->proxy_protocol;
protocols_prev = addr[i].opt.proxy_protocol;
#if (NGX_STREAM_SSL)
ssl = lsopt->ssl || addr[i].opt.ssl;
protocols |= lsopt->ssl << 1;
protocols_prev |= addr[i].opt.ssl << 1;
#endif
if (lsopt->set) {
if (addr[i].opt.set) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"duplicate listen options for %V",
&addr[i].opt.addr_text);
return NGX_ERROR;
}
addr[i].opt = *lsopt;
}
/* check the duplicate "default" server for this address:port */
if (lsopt->default_server) {
if (default_server) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"a duplicate default server for %V",
&addr[i].opt.addr_text);
return NGX_ERROR;
}
default_server = 1;
addr[i].default_server = cscf;
}
/* check for conflicting protocol options */
if ((protocols | protocols_prev) != protocols_prev) {
/* options added */
if ((addr[i].opt.set && !lsopt->set)
|| addr[i].protocols_changed
|| (protocols | protocols_prev) != protocols)
{
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"protocol options redefined for %V",
&addr[i].opt.addr_text);
}
addr[i].protocols = protocols_prev;
addr[i].protocols_set = 1;
addr[i].protocols_changed = 1;
} else if ((protocols_prev | protocols) != protocols) {
/* options removed */
if (lsopt->set
|| (addr[i].protocols_set && protocols != addr[i].protocols))
{
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"protocol options redefined for %V",
&addr[i].opt.addr_text);
}
addr[i].protocols = protocols;
addr[i].protocols_set = 1;
addr[i].protocols_changed = 1;
} else {
/* the same options */
if ((lsopt->set && addr[i].protocols_changed)
|| (addr[i].protocols_set && protocols != addr[i].protocols))
{
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"protocol options redefined for %V",
&addr[i].opt.addr_text);
}
addr[i].protocols = protocols;
addr[i].protocols_set = 1;
}
addr[i].opt.default_server = default_server;
addr[i].opt.proxy_protocol = proxy_protocol;
#if (NGX_STREAM_SSL)
addr[i].opt.ssl = ssl;
#endif
return NGX_OK;
}
/* add the address to the addresses list that bound to this port */
return ngx_stream_add_address(cf, cscf, port, lsopt);
}
/*
* add the server address, the server names and the server core module
* configurations to the port list
*/
static ngx_int_t
ngx_stream_add_address(ngx_conf_t *cf, ngx_stream_core_srv_conf_t *cscf,
ngx_stream_conf_port_t *port, ngx_stream_listen_opt_t *lsopt)
{
ngx_stream_conf_addr_t *addr;
if (port->addrs.elts == NULL) {
if (ngx_array_init(&port->addrs, cf->temp_pool, 4,
sizeof(ngx_stream_conf_addr_t))
!= NGX_OK)
{
return NGX_ERROR;
}
}
addr = ngx_array_push(&port->addrs);
if (addr == NULL) {
return NGX_ERROR;
}
addr->opt = *lsopt;
addr->protocols = 0;
addr->protocols_set = 0;
addr->protocols_changed = 0;
addr->hash.buckets = NULL;
addr->hash.size = 0;
addr->wc_head = NULL;
addr->wc_tail = NULL;
#if (NGX_PCRE)
addr->nregex = 0;
addr->regex = NULL;
#endif
addr->default_server = cscf;
addr->servers.elts = NULL;
return ngx_stream_add_server(cf, cscf, addr);
}
/* add the server core module configuration to the address:port */
static ngx_int_t
ngx_stream_add_server(ngx_conf_t *cf, ngx_stream_core_srv_conf_t *cscf,
ngx_stream_conf_addr_t *addr)
{
ngx_uint_t i;
ngx_stream_core_srv_conf_t **server;
if (addr->servers.elts == NULL) {
if (ngx_array_init(&addr->servers, cf->temp_pool, 4,
sizeof(ngx_stream_core_srv_conf_t *))
!= NGX_OK)
{
return NGX_ERROR;
}
} else {
server = addr->servers.elts;
for (i = 0; i < addr->servers.nelts; i++) {
if (server[i] == cscf) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"a duplicate listen %V",
&addr->opt.addr_text);
return NGX_ERROR;
}
}
}
server = ngx_array_push(&addr->servers);
if (server == NULL) {
return NGX_ERROR;
}
*server = cscf;
return NGX_OK;
}
static ngx_int_t
ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_stream_core_main_conf_t *cmcf,
ngx_array_t *ports)
{
ngx_uint_t p, a;
ngx_stream_conf_port_t *port;
ngx_stream_conf_addr_t *addr;
if (ports == NULL) {
return NGX_OK;
}
port = ports->elts;
for (p = 0; p < ports->nelts; p++) {
ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts,
sizeof(ngx_stream_conf_addr_t), ngx_stream_cmp_conf_addrs);
/*
* check whether all name-based servers have the same
* configuration as a default server for given address:port
*/
addr = port[p].addrs.elts;
for (a = 0; a < port[p].addrs.nelts; a++) {
if (addr[a].servers.nelts > 1
#if (NGX_PCRE)
|| addr[a].default_server->captures
#endif
)
{
if (ngx_stream_server_names(cf, cmcf, &addr[a]) != NGX_OK) {
return NGX_ERROR;
}
}
}
if (ngx_stream_init_listening(cf, &port[p]) != NGX_OK) {
return NGX_ERROR;
}
}
return NGX_OK;
}
static ngx_int_t
ngx_stream_server_names(ngx_conf_t *cf, ngx_stream_core_main_conf_t *cmcf,
ngx_stream_conf_addr_t *addr)
{
ngx_int_t rc;
ngx_uint_t n, s;
ngx_hash_init_t hash;
ngx_hash_keys_arrays_t ha;
ngx_stream_server_name_t *name;
ngx_stream_core_srv_conf_t **cscfp;
#if (NGX_PCRE)
ngx_uint_t regex, i;
regex = 0;
#endif
ngx_memzero(&ha, sizeof(ngx_hash_keys_arrays_t));
ha.temp_pool = ngx_create_pool(NGX_DEFAULT_POOL_SIZE, cf->log);
if (ha.temp_pool == NULL) {
return NGX_ERROR;
}
ha.pool = cf->pool;
if (ngx_hash_keys_array_init(&ha, NGX_HASH_LARGE) != NGX_OK) {
goto failed;
}
cscfp = addr->servers.elts;
for (s = 0; s < addr->servers.nelts; s++) {
name = cscfp[s]->server_names.elts;
for (n = 0; n < cscfp[s]->server_names.nelts; n++) {
#if (NGX_PCRE)
if (name[n].regex) {
regex++;
continue;
}
#endif
rc = ngx_hash_add_key(&ha, &name[n].name, name[n].server,
NGX_HASH_WILDCARD_KEY);
if (rc == NGX_ERROR) {
goto failed;
}
if (rc == NGX_DECLINED) {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
"invalid server name or wildcard \"%V\" on %V",
&name[n].name, &addr->opt.addr_text);
goto failed;
}
if (rc == NGX_BUSY) {
ngx_log_error(NGX_LOG_WARN, cf->log, 0,
"conflicting server name \"%V\" on %V, ignored",
&name[n].name, &addr->opt.addr_text);
}
}
}
hash.key = ngx_hash_key_lc;
hash.max_size = cmcf->server_names_hash_max_size;
hash.bucket_size = cmcf->server_names_hash_bucket_size;
hash.name = "server_names_hash";
hash.pool = cf->pool;
if (ha.keys.nelts) {
hash.hash = &addr->hash;
hash.temp_pool = NULL;
if (ngx_hash_init(&hash, ha.keys.elts, ha.keys.nelts) != NGX_OK) {
goto failed;
}
}
if (ha.dns_wc_head.nelts) {
ngx_qsort(ha.dns_wc_head.elts, (size_t) ha.dns_wc_head.nelts,
sizeof(ngx_hash_key_t), ngx_stream_cmp_dns_wildcards);
hash.hash = NULL;
hash.temp_pool = ha.temp_pool;
if (ngx_hash_wildcard_init(&hash, ha.dns_wc_head.elts,
ha.dns_wc_head.nelts)
!= NGX_OK)
{
goto failed;
}
addr->wc_head = (ngx_hash_wildcard_t *) hash.hash;
}
if (ha.dns_wc_tail.nelts) {
ngx_qsort(ha.dns_wc_tail.elts, (size_t) ha.dns_wc_tail.nelts,
sizeof(ngx_hash_key_t), ngx_stream_cmp_dns_wildcards);
hash.hash = NULL;
hash.temp_pool = ha.temp_pool;
if (ngx_hash_wildcard_init(&hash, ha.dns_wc_tail.elts,
ha.dns_wc_tail.nelts)
!= NGX_OK)
{
goto failed;
}
addr->wc_tail = (ngx_hash_wildcard_t *) hash.hash;
}
ngx_destroy_pool(ha.temp_pool);
#if (NGX_PCRE)
if (regex == 0) {
return NGX_OK;
}
addr->nregex = regex;
addr->regex = ngx_palloc(cf->pool,
regex * sizeof(ngx_stream_server_name_t));
if (addr->regex == NULL) {
return NGX_ERROR;
}
i = 0;
for (s = 0; s < addr->servers.nelts; s++) {
name = cscfp[s]->server_names.elts;
for (n = 0; n < cscfp[s]->server_names.nelts; n++) {
if (name[n].regex) {
addr->regex[i++] = name[n];
}
}
}
#endif
return NGX_OK;
failed:
ngx_destroy_pool(ha.temp_pool);
return NGX_ERROR;
}
static ngx_int_t
ngx_stream_cmp_conf_addrs(const void *one, const void *two)
{
ngx_stream_conf_addr_t *first, *second;
first = (ngx_stream_conf_addr_t *) one;
second = (ngx_stream_conf_addr_t *) two;
if (first->opt.wildcard) {
/* a wildcard address must be the last resort, shift it to the end */
return 1;
}
if (second->opt.wildcard) {
/* a wildcard address must be the last resort, shift it to the end */
return -1;
}
if (first->opt.bind && !second->opt.bind) {
/* shift explicit bind()ed addresses to the start */
return -1;
}
if (!first->opt.bind && second->opt.bind) {
/* shift explicit bind()ed addresses to the start */
return 1;
}
/* do not sort by default */
return 0;
}
static int ngx_libc_cdecl
ngx_stream_cmp_dns_wildcards(const void *one, const void *two)
{
ngx_hash_key_t *first, *second;
first = (ngx_hash_key_t *) one;
second = (ngx_hash_key_t *) two;
return ngx_dns_strcmp(first->key.data, second->key.data);
}
static ngx_int_t
ngx_stream_init_listening(ngx_conf_t *cf, ngx_stream_conf_port_t *port)
{
ngx_uint_t i, last, bind_wildcard;
ngx_listening_t *ls;
ngx_stream_port_t *stport;
ngx_stream_conf_addr_t *addr;
addr = port->addrs.elts;
last = port->addrs.nelts;
/*
* If there is a binding to an "*:port" then we need to bind() to
* the "*:port" only and ignore other implicit bindings. The bindings
* have been already sorted: explicit bindings are on the start, then
* implicit bindings go, and wildcard binding is in the end.
*/
if (addr[last - 1].opt.wildcard) {
addr[last - 1].opt.bind = 1;
bind_wildcard = 1;
} else {
bind_wildcard = 0;
}
i = 0;
while (i < last) {
if (bind_wildcard && !addr[i].opt.bind) {
i++;
continue;
}
ls = ngx_stream_add_listening(cf, &addr[i]);
if (ls == NULL) {
return NGX_ERROR;
}
stport = ngx_pcalloc(cf->pool, sizeof(ngx_stream_port_t));
if (stport == NULL) {
return NGX_ERROR;
}
ls->servers = stport;
stport->naddrs = i + 1;
switch (ls->sockaddr->sa_family) {
#if (NGX_HAVE_INET6)
case AF_INET6:
if (ngx_stream_add_addrs6(cf, stport, addr) != NGX_OK) {
return NGX_ERROR;
}
break;
#endif
default: /* AF_INET */
if (ngx_stream_add_addrs(cf, stport, addr) != NGX_OK) {
return NGX_ERROR;
}
break;
}
addr++;
last--;
}
return NGX_OK;
}
static ngx_listening_t *
ngx_stream_add_listening(ngx_conf_t *cf, ngx_stream_conf_addr_t *addr)
{
ngx_listening_t *ls;
ngx_stream_core_srv_conf_t *cscf;
ls = ngx_create_listening(cf, addr->opt.sockaddr, addr->opt.socklen);
if (ls == NULL) {
return NULL;
}
ls->addr_ntop = 1;
ls->handler = ngx_stream_init_connection;
ls->pool_size = 256;
cscf = addr->default_server;
ls->logp = cscf->error_log;
ls->log.data = &ls->addr_text;
ls->log.handler = ngx_accept_log_error;
ls->type = addr->opt.type;
ls->backlog = addr->opt.backlog;
ls->rcvbuf = addr->opt.rcvbuf;
ls->sndbuf = addr->opt.sndbuf;
ls->keepalive = addr->opt.so_keepalive;
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
ls->keepidle = addr->opt.tcp_keepidle;
ls->keepintvl = addr->opt.tcp_keepintvl;
ls->keepcnt = addr->opt.tcp_keepcnt;
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
ls->accept_filter = addr->opt.accept_filter;
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
ls->deferred_accept = addr->opt.deferred_accept;
#endif
#if (NGX_HAVE_INET6)
ls->ipv6only = addr->opt.ipv6only;
#endif
#if (NGX_HAVE_SETFIB)
ls->setfib = addr->opt.setfib;
#endif
#if (NGX_HAVE_TCP_FASTOPEN)
ls->fastopen = addr->opt.fastopen;
#endif
#if (NGX_HAVE_REUSEPORT)
ls->reuseport = addr->opt.reuseport;
#endif
ls->wildcard = addr->opt.wildcard;
return ls;
}
static ngx_int_t
ngx_stream_add_addrs(ngx_conf_t *cf, ngx_stream_port_t *stport,
ngx_stream_conf_addr_t *addr)
{
ngx_uint_t i;
struct sockaddr_in *sin;
ngx_stream_in_addr_t *addrs;
ngx_stream_virtual_names_t *vn;
stport->addrs = ngx_pcalloc(cf->pool,
stport->naddrs * sizeof(ngx_stream_in_addr_t));
if (stport->addrs == NULL) {
return NGX_ERROR;
}
addrs = stport->addrs;
for (i = 0; i < stport->naddrs; i++) {
sin = (struct sockaddr_in *) addr[i].opt.sockaddr;
addrs[i].addr = sin->sin_addr.s_addr;
addrs[i].conf.default_server = addr[i].default_server;
#if (NGX_STREAM_SSL)
addrs[i].conf.ssl = addr[i].opt.ssl;
#endif
addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
if (addr[i].hash.buckets == NULL
&& (addr[i].wc_head == NULL
|| addr[i].wc_head->hash.buckets == NULL)
&& (addr[i].wc_tail == NULL
|| addr[i].wc_tail->hash.buckets == NULL)
#if (NGX_PCRE)
&& addr[i].nregex == 0
#endif
)
{
continue;
}
vn = ngx_palloc(cf->pool, sizeof(ngx_stream_virtual_names_t));
if (vn == NULL) {
return NGX_ERROR;
}
addrs[i].conf.virtual_names = vn;
vn->names.hash = addr[i].hash;
vn->names.wc_head = addr[i].wc_head;
vn->names.wc_tail = addr[i].wc_tail;
#if (NGX_PCRE)
vn->nregex = addr[i].nregex;
vn->regex = addr[i].regex;
#endif
}
return NGX_OK;
}
#if (NGX_HAVE_INET6)
static ngx_int_t
ngx_stream_add_addrs6(ngx_conf_t *cf, ngx_stream_port_t *stport,
ngx_stream_conf_addr_t *addr)
{
ngx_uint_t i;
struct sockaddr_in6 *sin6;
ngx_stream_in6_addr_t *addrs6;
ngx_stream_virtual_names_t *vn;
stport->addrs = ngx_pcalloc(cf->pool,
stport->naddrs * sizeof(ngx_stream_in6_addr_t));
if (stport->addrs == NULL) {
return NGX_ERROR;
}
addrs6 = stport->addrs;
for (i = 0; i < stport->naddrs; i++) {
sin6 = (struct sockaddr_in6 *) addr[i].opt.sockaddr;
addrs6[i].addr6 = sin6->sin6_addr;
addrs6[i].conf.default_server = addr[i].default_server;
#if (NGX_STREAM_SSL)
addrs6[i].conf.ssl = addr[i].opt.ssl;
#endif
addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
if (addr[i].hash.buckets == NULL
&& (addr[i].wc_head == NULL
|| addr[i].wc_head->hash.buckets == NULL)
&& (addr[i].wc_tail == NULL
|| addr[i].wc_tail->hash.buckets == NULL)
#if (NGX_PCRE)
&& addr[i].nregex == 0
#endif
)
{
continue;
}
vn = ngx_palloc(cf->pool, sizeof(ngx_stream_virtual_names_t));
if (vn == NULL) {
return NGX_ERROR;
}
addrs6[i].conf.virtual_names = vn;
vn->names.hash = addr[i].hash;
vn->names.wc_head = addr[i].wc_head;
vn->names.wc_tail = addr[i].wc_tail;
#if (NGX_PCRE)
vn->nregex = addr[i].nregex;
vn->regex = addr[i].regex;
#endif
}
return NGX_OK;
}
#endif
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