Mercurial > hg > nginx
changeset 6175:8807a2369b1a
Stream: access module.
stream {
server {
...
allow 127.0.0.1;
deny all;
}
}
| author | Vladimir Homutov <vl@nginx.com> |
|---|---|
| date | Thu, 04 Jun 2015 13:04:12 +0300 |
| parents | 68c106e6fa0a |
| children | c983c8dea44c |
| files | auto/modules auto/options auto/sources src/stream/ngx_stream.h src/stream/ngx_stream_access_module.c src/stream/ngx_stream_handler.c |
| diffstat | 6 files changed, 491 insertions(+), 12 deletions(-) [+] |
line wrap: on
line diff
--- a/auto/modules +++ b/auto/modules @@ -514,6 +514,11 @@ if [ $STREAM = YES ]; then STREAM_SRCS="$STREAM_SRCS $STREAM_SSL_SRCS" fi + if [ $STREAM_ACCESS = YES ]; then + modules="$modules $STREAM_ACCESS_MODULE" + STREAM_SRCS="$STREAM_SRCS $STREAM_ACCESS_SRCS" + fi + if [ $STREAM_UPSTREAM_HASH = YES ]; then modules="$modules $STREAM_UPSTREAM_HASH_MODULE" STREAM_SRCS="$STREAM_SRCS $STREAM_UPSTREAM_HASH_SRCS"
--- a/auto/options +++ b/auto/options @@ -113,6 +113,7 @@ MAIL_SMTP=YES STREAM=NO STREAM_SSL=NO +STREAM_ACCESS=YES STREAM_UPSTREAM_HASH=YES STREAM_UPSTREAM_LEAST_CONN=YES STREAM_UPSTREAM_ZONE=YES @@ -282,6 +283,7 @@ use the \"--with-mail_ssl_module\" optio --with-stream) STREAM=YES ;; --with-stream_ssl_module) STREAM_SSL=YES ;; + --without-stream_access_module) STREAM_ACCESS=NO ;; --without-stream_upstream_hash_module) STREAM_UPSTREAM_HASH=NO ;; --without-stream_upstream_least_conn_module) @@ -450,6 +452,7 @@ cat << END --with-stream enable TCP proxy module --with-stream_ssl_module enable ngx_stream_ssl_module + --without-stream_access_module disable ngx_stream_access_module --without-stream_upstream_hash_module disable ngx_stream_upstream_hash_module --without-stream_upstream_least_conn_module
--- a/auto/sources +++ b/auto/sources @@ -567,6 +567,9 @@ STREAM_SSL_MODULE="ngx_stream_ssl_module STREAM_SSL_DEPS="src/stream/ngx_stream_ssl_module.h" STREAM_SSL_SRCS="src/stream/ngx_stream_ssl_module.c" +STREAM_ACCESS_MODULE=ngx_stream_access_module +STREAM_ACCESS_SRCS=src/stream/ngx_stream_access_module.c + STREAM_UPSTREAM_HASH_MODULE=ngx_stream_upstream_hash_module STREAM_UPSTREAM_HASH_SRCS=src/stream/ngx_stream_upstream_hash_module.c
--- a/src/stream/ngx_stream.h +++ b/src/stream/ngx_stream.h @@ -112,9 +112,13 @@ typedef struct { } ngx_stream_conf_addr_t; +typedef ngx_int_t (*ngx_stream_access_pt)(ngx_stream_session_t *s); + + typedef struct { ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ ngx_array_t listen; /* ngx_stream_listen_t */ + ngx_stream_access_pt access_handler; } ngx_stream_core_main_conf_t;
new file mode 100644 --- /dev/null +++ b/src/stream/ngx_stream_access_module.c @@ -0,0 +1,451 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Nginx, Inc. + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_stream.h> + + +typedef struct { + in_addr_t mask; + in_addr_t addr; + ngx_uint_t deny; /* unsigned deny:1; */ +} ngx_stream_access_rule_t; + +#if (NGX_HAVE_INET6) + +typedef struct { + struct in6_addr addr; + struct in6_addr mask; + ngx_uint_t deny; /* unsigned deny:1; */ +} ngx_stream_access_rule6_t; + +#endif + +#if (NGX_HAVE_UNIX_DOMAIN) + +typedef struct { + ngx_uint_t deny; /* unsigned deny:1; */ +} ngx_stream_access_rule_un_t; + +#endif + +typedef struct { + ngx_array_t *rules; /* array of ngx_stream_access_rule_t */ +#if (NGX_HAVE_INET6) + ngx_array_t *rules6; /* array of ngx_stream_access_rule6_t */ +#endif +#if (NGX_HAVE_UNIX_DOMAIN) + ngx_array_t *rules_un; /* array of ngx_stream_access_rule_un_t */ +#endif +} ngx_stream_access_srv_conf_t; + + +static ngx_int_t ngx_stream_access_handler(ngx_stream_session_t *s); +static ngx_int_t ngx_stream_access_inet(ngx_stream_session_t *s, + ngx_stream_access_srv_conf_t *ascf, in_addr_t addr); +#if (NGX_HAVE_INET6) +static ngx_int_t ngx_stream_access_inet6(ngx_stream_session_t *s, + ngx_stream_access_srv_conf_t *ascf, u_char *p); +#endif +#if (NGX_HAVE_UNIX_DOMAIN) +static ngx_int_t ngx_stream_access_unix(ngx_stream_session_t *s, + ngx_stream_access_srv_conf_t *ascf); +#endif +static ngx_int_t ngx_stream_access_found(ngx_stream_session_t *s, + ngx_uint_t deny); +static char *ngx_stream_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static void *ngx_stream_access_create_srv_conf(ngx_conf_t *cf); +static char *ngx_stream_access_merge_srv_conf(ngx_conf_t *cf, + void *parent, void *child); +static ngx_int_t ngx_stream_access_init(ngx_conf_t *cf); + + +static ngx_command_t ngx_stream_access_commands[] = { + + { ngx_string("allow"), + NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, + ngx_stream_access_rule, + NGX_STREAM_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("deny"), + NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, + ngx_stream_access_rule, + NGX_STREAM_SRV_CONF_OFFSET, + 0, + NULL }, + + ngx_null_command +}; + + + +static ngx_stream_module_t ngx_stream_access_module_ctx = { + ngx_stream_access_init, /* postconfiguration */ + + NULL, /* create main configuration */ + NULL, /* init main configuration */ + + ngx_stream_access_create_srv_conf, /* create server configuration */ + ngx_stream_access_merge_srv_conf /* merge server configuration */ +}; + + +ngx_module_t ngx_stream_access_module = { + NGX_MODULE_V1, + &ngx_stream_access_module_ctx, /* module context */ + ngx_stream_access_commands, /* module directives */ + NGX_STREAM_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 ngx_int_t +ngx_stream_access_handler(ngx_stream_session_t *s) +{ + struct sockaddr_in *sin; + ngx_stream_access_srv_conf_t *ascf; +#if (NGX_HAVE_INET6) + u_char *p; + in_addr_t addr; + struct sockaddr_in6 *sin6; +#endif + + ascf = ngx_stream_get_module_srv_conf(s, ngx_stream_access_module); + + switch (s->connection->sockaddr->sa_family) { + + case AF_INET: + if (ascf->rules) { + sin = (struct sockaddr_in *) s->connection->sockaddr; + return ngx_stream_access_inet(s, ascf, sin->sin_addr.s_addr); + } + break; + +#if (NGX_HAVE_INET6) + + case AF_INET6: + sin6 = (struct sockaddr_in6 *) s->connection->sockaddr; + p = sin6->sin6_addr.s6_addr; + + if (ascf->rules && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { + addr = p[12] << 24; + addr += p[13] << 16; + addr += p[14] << 8; + addr += p[15]; + return ngx_stream_access_inet(s, ascf, htonl(addr)); + } + + if (ascf->rules6) { + return ngx_stream_access_inet6(s, ascf, p); + } + + break; + +#endif + +#if (NGX_HAVE_UNIX_DOMAIN) + + case AF_UNIX: + if (ascf->rules_un) { + return ngx_stream_access_unix(s, ascf); + } + + break; + +#endif + } + + return NGX_DECLINED; +} + + +static ngx_int_t +ngx_stream_access_inet(ngx_stream_session_t *s, + ngx_stream_access_srv_conf_t *ascf, in_addr_t addr) +{ + ngx_uint_t i; + ngx_stream_access_rule_t *rule; + + rule = ascf->rules->elts; + for (i = 0; i < ascf->rules->nelts; i++) { + + ngx_log_debug3(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, + "access: %08XD %08XD %08XD", + addr, rule[i].mask, rule[i].addr); + + if ((addr & rule[i].mask) == rule[i].addr) { + return ngx_stream_access_found(s, rule[i].deny); + } + } + + return NGX_DECLINED; +} + + +#if (NGX_HAVE_INET6) + +static ngx_int_t +ngx_stream_access_inet6(ngx_stream_session_t *s, + ngx_stream_access_srv_conf_t *ascf, u_char *p) +{ + ngx_uint_t n; + ngx_uint_t i; + ngx_stream_access_rule6_t *rule6; + + rule6 = ascf->rules6->elts; + for (i = 0; i < ascf->rules6->nelts; i++) { + +#if (NGX_DEBUG) + { + size_t cl, ml, al; + u_char ct[NGX_INET6_ADDRSTRLEN]; + u_char mt[NGX_INET6_ADDRSTRLEN]; + u_char at[NGX_INET6_ADDRSTRLEN]; + + cl = ngx_inet6_ntop(p, ct, NGX_INET6_ADDRSTRLEN); + ml = ngx_inet6_ntop(rule6[i].mask.s6_addr, mt, NGX_INET6_ADDRSTRLEN); + al = ngx_inet6_ntop(rule6[i].addr.s6_addr, at, NGX_INET6_ADDRSTRLEN); + + ngx_log_debug6(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, + "access: %*s %*s %*s", cl, ct, ml, mt, al, at); + } +#endif + + for (n = 0; n < 16; n++) { + if ((p[n] & rule6[i].mask.s6_addr[n]) != rule6[i].addr.s6_addr[n]) { + goto next; + } + } + + return ngx_stream_access_found(s, rule6[i].deny); + + next: + continue; + } + + return NGX_DECLINED; +} + +#endif + + +#if (NGX_HAVE_UNIX_DOMAIN) + +static ngx_int_t +ngx_stream_access_unix(ngx_stream_session_t *s, + ngx_stream_access_srv_conf_t *ascf) +{ + ngx_uint_t i; + ngx_stream_access_rule_un_t *rule_un; + + rule_un = ascf->rules_un->elts; + for (i = 0; i < ascf->rules_un->nelts; i++) { + + /* TODO: check path */ + if (1) { + return ngx_stream_access_found(s, rule_un[i].deny); + } + } + + return NGX_DECLINED; +} + +#endif + + +static ngx_int_t +ngx_stream_access_found(ngx_stream_session_t *s, ngx_uint_t deny) +{ + if (deny) { + ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, + "access forbidden by rule"); + return NGX_ABORT; + } + + return NGX_OK; +} + + +static char * +ngx_stream_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_stream_access_srv_conf_t *ascf = conf; + + ngx_int_t rc; + ngx_uint_t all; + ngx_str_t *value; + ngx_cidr_t cidr; + ngx_stream_access_rule_t *rule; +#if (NGX_HAVE_INET6) + ngx_stream_access_rule6_t *rule6; +#endif +#if (NGX_HAVE_UNIX_DOMAIN) + ngx_stream_access_rule_un_t *rule_un; +#endif + + ngx_memzero(&cidr, sizeof(ngx_cidr_t)); + + value = cf->args->elts; + + all = (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0); + + if (!all) { + +#if (NGX_HAVE_UNIX_DOMAIN) + + if (value[1].len == 5 && ngx_strcmp(value[1].data, "unix:") == 0) { + cidr.family = AF_UNIX; + rc = NGX_OK; + + } else { + rc = ngx_ptocidr(&value[1], &cidr); + } + +#else + rc = ngx_ptocidr(&value[1], &cidr); +#endif + + if (rc == NGX_ERROR) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid parameter \"%V\"", &value[1]); + return NGX_CONF_ERROR; + } + + if (rc == NGX_DONE) { + ngx_conf_log_error(NGX_LOG_WARN, cf, 0, + "low address bits of %V are meaningless", &value[1]); + } + } + + if (cidr.family == AF_INET || all) { + + if (ascf->rules == NULL) { + ascf->rules = ngx_array_create(cf->pool, 4, + sizeof(ngx_stream_access_rule_t)); + if (ascf->rules == NULL) { + return NGX_CONF_ERROR; + } + } + + rule = ngx_array_push(ascf->rules); + if (rule == NULL) { + return NGX_CONF_ERROR; + } + + rule->mask = cidr.u.in.mask; + rule->addr = cidr.u.in.addr; + rule->deny = (value[0].data[0] == 'd') ? 1 : 0; + } + +#if (NGX_HAVE_INET6) + if (cidr.family == AF_INET6 || all) { + + if (ascf->rules6 == NULL) { + ascf->rules6 = ngx_array_create(cf->pool, 4, + sizeof(ngx_stream_access_rule6_t)); + if (ascf->rules6 == NULL) { + return NGX_CONF_ERROR; + } + } + + rule6 = ngx_array_push(ascf->rules6); + if (rule6 == NULL) { + return NGX_CONF_ERROR; + } + + rule6->mask = cidr.u.in6.mask; + rule6->addr = cidr.u.in6.addr; + rule6->deny = (value[0].data[0] == 'd') ? 1 : 0; + } +#endif + +#if (NGX_HAVE_UNIX_DOMAIN) + if (cidr.family == AF_UNIX || all) { + + if (ascf->rules_un == NULL) { + ascf->rules_un = ngx_array_create(cf->pool, 1, + sizeof(ngx_stream_access_rule_un_t)); + if (ascf->rules_un == NULL) { + return NGX_CONF_ERROR; + } + } + + rule_un = ngx_array_push(ascf->rules_un); + if (rule_un == NULL) { + return NGX_CONF_ERROR; + } + + rule_un->deny = (value[0].data[0] == 'd') ? 1 : 0; + } +#endif + + return NGX_CONF_OK; +} + + +static void * +ngx_stream_access_create_srv_conf(ngx_conf_t *cf) +{ + ngx_stream_access_srv_conf_t *conf; + + conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_access_srv_conf_t)); + if (conf == NULL) { + return NULL; + } + + return conf; +} + + +static char * +ngx_stream_access_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_stream_access_srv_conf_t *prev = parent; + ngx_stream_access_srv_conf_t *conf = child; + + if (conf->rules == NULL +#if (NGX_HAVE_INET6) + && conf->rules6 == NULL +#endif +#if (NGX_HAVE_UNIX_DOMAIN) + && conf->rules_un == NULL +#endif + ) { + conf->rules = prev->rules; +#if (NGX_HAVE_INET6) + conf->rules6 = prev->rules6; +#endif +#if (NGX_HAVE_UNIX_DOMAIN) + conf->rules_un = prev->rules_un; +#endif + } + + return NGX_CONF_OK; +} + + +static ngx_int_t +ngx_stream_access_init(ngx_conf_t *cf) +{ + ngx_stream_core_main_conf_t *cmcf; + + cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module); + cmcf->access_handler = ngx_stream_access_handler; + + return NGX_OK; +}
--- a/src/stream/ngx_stream_handler.c +++ b/src/stream/ngx_stream_handler.c @@ -23,20 +23,22 @@ static void ngx_stream_ssl_handshake_han void ngx_stream_init_connection(ngx_connection_t *c) { - u_char text[NGX_SOCKADDR_STRLEN]; - size_t len; - ngx_uint_t i; - struct sockaddr *sa; - ngx_stream_port_t *port; - struct sockaddr_in *sin; - ngx_stream_in_addr_t *addr; - ngx_stream_session_t *s; - ngx_stream_addr_conf_t *addr_conf; + u_char text[NGX_SOCKADDR_STRLEN]; + size_t len; + ngx_int_t rc; + ngx_uint_t i; + struct sockaddr *sa; + ngx_stream_port_t *port; + struct sockaddr_in *sin; + ngx_stream_in_addr_t *addr; + ngx_stream_session_t *s; + ngx_stream_addr_conf_t *addr_conf; #if (NGX_HAVE_INET6) - struct sockaddr_in6 *sin6; - ngx_stream_in6_addr_t *addr6; + struct sockaddr_in6 *sin6; + ngx_stream_in6_addr_t *addr6; #endif - ngx_stream_core_srv_conf_t *cscf; + ngx_stream_core_srv_conf_t *cscf; + ngx_stream_core_main_conf_t *cmcf; /* find the server configuration for the address:port */ @@ -143,6 +145,17 @@ ngx_stream_init_connection(ngx_connectio c->log->action = "initializing connection"; c->log_error = NGX_ERROR_INFO; + cmcf = ngx_stream_get_module_main_conf(s, ngx_stream_core_module); + + if (cmcf->access_handler) { + rc = cmcf->access_handler(s); + + if (rc != NGX_OK && rc != NGX_DECLINED) { + ngx_stream_close_connection(c); + return; + } + } + #if (NGX_STREAM_SSL) { ngx_stream_ssl_conf_t *sslcf;