| |
| /* |
| * 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_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_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; |
| |
| |
| 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 i, m, mi, 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; |
| 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; |
| } |
| |
| if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_stream_conf_port_t)) |
| != 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); |
| } |
| |
| |
| 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; |
| } |
| |
| |
| static ngx_int_t |
| ngx_stream_add_ports(ngx_conf_t *cf, ngx_array_t *ports, |
| ngx_stream_listen_t *listen) |
| { |
| in_port_t p; |
| ngx_uint_t i; |
| struct sockaddr *sa; |
| ngx_stream_conf_port_t *port; |
| ngx_stream_conf_addr_t *addr; |
| |
| sa = &listen->sockaddr.sockaddr; |
| p = ngx_inet_get_port(sa); |
| |
| port = ports->elts; |
| for (i = 0; i < ports->nelts; i++) { |
| |
| if (p == port[i].port |
| && listen->type == port[i].type |
| && sa->sa_family == port[i].family) |
| { |
| /* a port is already in the port list */ |
| |
| port = &port[i]; |
| goto found; |
| } |
| } |
| |
| /* add a port to the port list */ |
| |
| port = ngx_array_push(ports); |
| if (port == NULL) { |
| return NGX_ERROR; |
| } |
| |
| port->family = sa->sa_family; |
| port->type = listen->type; |
| port->port = p; |
| |
| if (ngx_array_init(&port->addrs, cf->temp_pool, 2, |
| sizeof(ngx_stream_conf_addr_t)) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| found: |
| |
| addr = ngx_array_push(&port->addrs); |
| if (addr == NULL) { |
| return NGX_ERROR; |
| } |
| |
| addr->opt = *listen; |
| |
| return NGX_OK; |
| } |
| |
| |
| static char * |
| ngx_stream_optimize_servers(ngx_conf_t *cf, 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; |
| |
| 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); |
| |
| 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 |
| */ |
| |
| 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_create_listening(cf, &addr[i].opt.sockaddr.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_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; |
| } |
| |
| if (ngx_clone_listening(cf, ls) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| addr++; |
| last--; |
| } |
| } |
| |
| 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) |
| { |
| u_char *p; |
| size_t len; |
| ngx_uint_t i; |
| struct sockaddr_in *sin; |
| ngx_stream_in_addr_t *addrs; |
| u_char buf[NGX_SOCKADDR_STRLEN]; |
| |
| 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 = &addr[i].opt.sockaddr.sockaddr_in; |
| 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; |
| |
| len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen, |
| buf, NGX_SOCKADDR_STRLEN, 1); |
| |
| p = ngx_pnalloc(cf->pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(p, buf, len); |
| |
| addrs[i].conf.addr_text.len = len; |
| addrs[i].conf.addr_text.data = p; |
| } |
| |
| 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) |
| { |
| u_char *p; |
| size_t len; |
| ngx_uint_t i; |
| struct sockaddr_in6 *sin6; |
| ngx_stream_in6_addr_t *addrs6; |
| u_char buf[NGX_SOCKADDR_STRLEN]; |
| |
| 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 = &addr[i].opt.sockaddr.sockaddr_in6; |
| addrs6[i].addr6 = sin6->sin6_addr; |
| |
| 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; |
| |
| len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen, |
| buf, NGX_SOCKADDR_STRLEN, 1); |
| |
| p = ngx_pnalloc(cf->pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(p, buf, len); |
| |
| addrs6[i].conf.addr_text.len = len; |
| addrs6[i].conf.addr_text.data = p; |
| } |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| |
| 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 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 */ |
| 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; |
| } |