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[nginx] Stream: virtual servers.

Roman Arutyunyan
March 21, 2024 09:42AM
details: https://hg.nginx.org/nginx/rev/e28b044908cb
branches:
changeset: 9216:e28b044908cb
user: Roman Arutyunyan <arut@nginx.com>
date: Thu Dec 14 21:58:39 2023 +0400
description:
Stream: virtual servers.

Server name is taken either from ngx_stream_ssl_module or
ngx_stream_ssl_preread_module.

The change adds "default_server" parameter to the "listen" directive,
as well as the following directives: "server_names_hash_max_size",
"server_names_hash_bucket_size", "server_name" and "ssl_reject_handshake".

diffstat:

src/stream/ngx_stream.c | 902 ++++++++++++++++++++++------
src/stream/ngx_stream.h | 160 +++-
src/stream/ngx_stream_core_module.c | 494 ++++++++++++---
src/stream/ngx_stream_handler.c | 10 +-
src/stream/ngx_stream_ssl_module.c | 224 ++++++-
src/stream/ngx_stream_ssl_module.h | 5 +-
src/stream/ngx_stream_ssl_preread_module.c | 57 +-
7 files changed, 1457 insertions(+), 395 deletions(-)

diffs (truncated from 2452 to 1000 lines):

diff -r cf890df37bb6 -r e28b044908cb src/stream/ngx_stream.c
--- a/src/stream/ngx_stream.c Wed Dec 13 18:04:55 2023 +0400
+++ b/src/stream/ngx_stream.c Thu Dec 14 21:58:39 2023 +0400
@@ -16,16 +16,34 @@ static ngx_int_t ngx_stream_init_phases(
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_ports(ngx_conf_t *cf, ngx_array_t *ports,
- ngx_stream_listen_t *listen);
-static char *ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports);
+
+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
-static ngx_int_t ngx_stream_cmp_conf_addrs(const void *one, const void *two);


ngx_uint_t ngx_stream_max_module;
@@ -74,10 +92,8 @@ static char *
ngx_stream_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
char *rv;
- ngx_uint_t i, m, mi, s;
+ ngx_uint_t mi, m, s;
ngx_conf_t pcf;
- ngx_array_t ports;
- ngx_stream_listen_t *listen;
ngx_stream_module_t *module;
ngx_stream_conf_ctx_t *ctx;
ngx_stream_core_srv_conf_t **cscfp;
@@ -251,21 +267,13 @@ ngx_stream_block(ngx_conf_t *cf, ngx_com
return NGX_CONF_ERROR;
}

- if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_stream_conf_port_t))
- != NGX_OK)
- {
+ /* optimize the lists of ports, addresses and server names */
+
+ if (ngx_stream_optimize_servers(cf, cmcf, cmcf->ports) != NGX_OK) {
return NGX_CONF_ERROR;
}

- listen = cmcf->listen.elts;
-
- for (i = 0; i < cmcf->listen.nelts; i++) {
- if (ngx_stream_add_ports(cf, &ports, &listen[i]) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
- }
-
- return ngx_stream_optimize_servers(cf, &ports);
+ return NGX_CONF_OK;
}


@@ -377,73 +385,295 @@ ngx_stream_init_phase_handlers(ngx_conf_
}


-static ngx_int_t
-ngx_stream_add_ports(ngx_conf_t *cf, ngx_array_t *ports,
- ngx_stream_listen_t *listen)
+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_conf_addr_t *addr;
+ 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);

- sa = listen->sockaddr;
+ 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 = ports->elts;
- for (i = 0; i < ports->nelts; i++) {
+ port = cmcf->ports->elts;
+ for (i = 0; i < cmcf->ports->nelts; i++) {

- if (p == port[i].port
- && listen->type == port[i].type
- && sa->sa_family == port[i].family)
+ if (p != port[i].port
+ || lsopt->type != port[i].type
+ || sa->sa_family != port[i].family)
{
- /* a port is already in the port list */
+ continue;
+ }

- port = &port[i];
- goto found;
- }
+ /* 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(ports);
+ port = ngx_array_push(cmcf->ports);
if (port == NULL) {
return NGX_ERROR;
}

port->family = sa->sa_family;
- port->type = listen->type;
+ 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 (ngx_array_init(&port->addrs, cf->temp_pool, 2,
- sizeof(ngx_stream_conf_addr_t))
- != NGX_OK)
- {
- return NGX_ERROR;
+ 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;
}

-found:
+ /* 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 = *listen;
+ 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 char *
-ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports)
+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 i, p, last, bind_wildcard;
- ngx_listening_t *ls;
- ngx_stream_port_t *stport;
- ngx_stream_conf_port_t *port;
- ngx_stream_conf_addr_t *addr;
- ngx_stream_core_srv_conf_t *cscf;
+ 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++) {
@@ -451,175 +681,191 @@ ngx_stream_optimize_servers(ngx_conf_t *
ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts,
sizeof(ngx_stream_conf_addr_t), ngx_stream_cmp_conf_addrs);

- addr = port[p].addrs.elts;
- last = port[p].addrs.nelts;
-
/*
- * if there is the binding to the "*:port" then we need to bind()
- * to the "*:port" only and ignore the other bindings
+ * check whether all name-based servers have the same
+ * configuration as a default server for given address:port
*/

- if (addr[last - 1].opt.wildcard) {
- addr[last - 1].opt.bind = 1;
- bind_wildcard = 1;
+ addr = port[p].addrs.elts;
+ for (a = 0; a < port[p].addrs.nelts; a++) {

- } else {
- bind_wildcard = 0;
+ 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;
+ }
+ }
}

- i = 0;
-
- while (i < last) {
-
- if (bind_wildcard && !addr[i].opt.bind) {
- i++;
- continue;
- }
-
- ls = ngx_create_listening(cf, addr[i].opt.sockaddr,
- addr[i].opt.socklen);
- if (ls == NULL) {
- return NGX_CONF_ERROR;
- }
-
- ls->addr_ntop = 1;
- ls->handler = ngx_stream_init_connection;
- ls->pool_size = 256;
- ls->type = addr[i].opt.type;
-
- cscf = addr->opt.ctx->srv_conf[ngx_stream_core_module.ctx_index];
-
- ls->logp = cscf->error_log;
- ls->log.data = &ls->addr_text;
- ls->log.handler = ngx_accept_log_error;
-
- ls->backlog = addr[i].opt.backlog;
- ls->rcvbuf = addr[i].opt.rcvbuf;
- ls->sndbuf = addr[i].opt.sndbuf;
-
- ls->wildcard = addr[i].opt.wildcard;
-
- ls->keepalive = addr[i].opt.so_keepalive;
-#if (NGX_HAVE_KEEPALIVE_TUNABLE)
- ls->keepidle = addr[i].opt.tcp_keepidle;
- ls->keepintvl = addr[i].opt.tcp_keepintvl;
- ls->keepcnt = addr[i].opt.tcp_keepcnt;
-#endif
-
-#if (NGX_HAVE_INET6)
- ls->ipv6only = addr[i].opt.ipv6only;
-#endif
-
-#if (NGX_HAVE_TCP_FASTOPEN)
- ls->fastopen = addr[i].opt.fastopen;
-#endif
-
-#if (NGX_HAVE_REUSEPORT)
- ls->reuseport = addr[i].opt.reuseport;
-#endif
-
- stport = ngx_palloc(cf->pool, sizeof(ngx_stream_port_t));
- if (stport == NULL) {
- return NGX_CONF_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_CONF_ERROR;
- }
- break;
-#endif
- default: /* AF_INET */
- if (ngx_stream_add_addrs(cf, stport, addr) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
- break;
- }
-
- addr++;
- last--;
+ if (ngx_stream_init_listening(cf, &port[p]) != NGX_OK) {
+ return NGX_ERROR;
}
}

- return NGX_CONF_OK;
-}
-
-
-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;
-
- 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.ctx = addr[i].opt.ctx;
-#if (NGX_STREAM_SSL)
- addrs[i].conf.ssl = addr[i].opt.ssl;
-#endif
- addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
- addrs[i].conf.addr_text = addr[i].opt.addr_text;
- }
-
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_server_names(ngx_conf_t *cf, ngx_stream_core_main_conf_t *cmcf,
ngx_stream_conf_addr_t *addr)
{
- ngx_uint_t i;
- struct sockaddr_in6 *sin6;
- ngx_stream_in6_addr_t *addrs6;
+ 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;

- stport->addrs = ngx_pcalloc(cf->pool,
- stport->naddrs * sizeof(ngx_stream_in6_addr_t));
- if (stport->addrs == NULL) {
+ 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;
}

- addrs6 = stport->addrs;
+ 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++) {

- for (i = 0; i < stport->naddrs; i++) {
+#if (NGX_PCRE)
+ if (name[n].regex) {
+ regex++;
+ continue;
+ }
+#endif

- sin6 = (struct sockaddr_in6 *) addr[i].opt.sockaddr;
- addrs6[i].addr6 = sin6->sin6_addr;
+ rc = ngx_hash_add_key(&ha, &name[n].name, name[n].server,
+ NGX_HASH_WILDCARD_KEY);
+
+ if (rc == NGX_ERROR) {
+ goto failed;
+ }

- addrs6[i].conf.ctx = addr[i].opt.ctx;
-#if (NGX_STREAM_SSL)
- addrs6[i].conf.ssl = addr[i].opt.ssl;
-#endif
- addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
- addrs6[i].conf.addr_text = addr[i].opt.addr_text;
+ 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;
+ }
}

- return NGX_OK;
-}
+ 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)
@@ -630,12 +876,12 @@ ngx_stream_cmp_conf_addrs(const void *on
second = (ngx_stream_conf_addr_t *) two;

if (first->opt.wildcard) {
- /* a wildcard must be the last resort, shift it to the end */
+ /* a wildcard address must be the last resort, shift it to the end */
return 1;
}

if (second->opt.wildcard) {
- /* a wildcard must be the last resort, shift it to the end */
+ /* a wildcard address must be the last resort, shift it to the end */
return -1;
}

@@ -653,3 +899,265 @@ ngx_stream_cmp_conf_addrs(const void *on

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_INET6)
+ ls->ipv6only = addr->opt.ipv6only;
+#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
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[nginx] Stream: virtual servers.

Roman Arutyunyan 116 March 21, 2024 09:42AM



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