/* * Copyright (C) Igor Sysoev */ #include #include #include #include static char *ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static int ngx_libc_cdecl ngx_cmp_server_names(const void *one, const void *two); static ngx_int_t ngx_http_add_address(ngx_conf_t *cf, ngx_http_in_port_t *in_port, ngx_http_listen_t *lscf, ngx_http_core_srv_conf_t *cscf); static ngx_int_t ngx_http_add_names(ngx_conf_t *cf, ngx_http_in_addr_t *in_addr, ngx_http_core_srv_conf_t *cscf); static char *ngx_http_merge_locations(ngx_conf_t *cf, ngx_array_t *locations, void **loc_conf, ngx_http_module_t *module, ngx_uint_t ctx_index); ngx_uint_t ngx_http_max_module; ngx_uint_t ngx_http_total_requests; uint64_t ngx_http_total_sent; ngx_int_t (*ngx_http_top_header_filter) (ngx_http_request_t *r); ngx_int_t (*ngx_http_top_body_filter) (ngx_http_request_t *r, ngx_chain_t *ch); static ngx_command_t ngx_http_commands[] = { { ngx_string("http"), NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, ngx_http_block, 0, 0, NULL }, ngx_null_command }; static ngx_core_module_t ngx_http_module_ctx = { ngx_string("http"), NULL, NULL }; ngx_module_t ngx_http_module = { NGX_MODULE_V1, &ngx_http_module_ctx, /* module context */ ngx_http_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_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *rv; ngx_uint_t mi, m, s, l, p, a, n, key; ngx_uint_t port_found, addr_found; ngx_uint_t virtual_names, separate_binding; ngx_conf_t pcf; ngx_array_t in_ports; ngx_listening_t *ls; ngx_http_listen_t *lscf; ngx_http_module_t *module; ngx_http_handler_pt *h; ngx_http_conf_ctx_t *ctx; ngx_http_in_port_t *in_port, *inport; ngx_http_in_addr_t *in_addr, *inaddr; ngx_http_server_name_t *s_name, *name; ngx_http_core_srv_conf_t **cscfp, *cscf; ngx_http_core_loc_conf_t *clcf; ngx_http_core_main_conf_t *cmcf; #if (NGX_WIN32) ngx_iocp_conf_t *iocpcf; #endif /* the main http context */ ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); if (ctx == NULL) { return NGX_CONF_ERROR; } *(ngx_http_conf_ctx_t **) conf = ctx; /* count the number of the http modules and set up their indices */ ngx_http_max_module = 0; for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } ngx_modules[m]->ctx_index = ngx_http_max_module++; } /* the http main_conf context, it is the same in the all http contexts */ ctx->main_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); if (ctx->main_conf == NULL) { return NGX_CONF_ERROR; } /* * the http 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_http_max_module); if (ctx->srv_conf == NULL) { return NGX_CONF_ERROR; } /* * the http null loc_conf context, it is used to merge * the server{}s' loc_conf's */ ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); if (ctx->loc_conf == NULL) { return NGX_CONF_ERROR; } /* * create the main_conf's, the null srv_conf's, and the null loc_conf's * of the all http modules */ for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; mi = ngx_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; } } if (module->create_loc_conf) { ctx->loc_conf[mi] = module->create_loc_conf(cf); if (ctx->loc_conf[mi] == NULL) { return NGX_CONF_ERROR; } } } pcf = *cf; cf->ctx = ctx; for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; mi = ngx_modules[m]->ctx_index; if (module->preconfiguration) { if (module->preconfiguration(cf) != NGX_OK) { return NGX_CONF_ERROR; } } } /* parse inside the http{} block */ cf->module_type = NGX_HTTP_MODULE; cf->cmd_type = NGX_HTTP_MAIN_CONF; rv = ngx_conf_parse(cf, NULL); if (rv != NGX_CONF_OK) { *cf = pcf; return rv; } /* * init http{} main_conf's, merge the server{}s' srv_conf's * and its location{}s' loc_conf's */ cmcf = ctx->main_conf[ngx_http_core_module.ctx_index]; cscfp = cmcf->servers.elts; for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; mi = ngx_modules[m]->ctx_index; /* init http{} main_conf's */ 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 */ 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 (module->merge_loc_conf) { /* merge the server{}'s loc_conf */ rv = module->merge_loc_conf(cf, ctx->loc_conf[mi], cscfp[s]->ctx->loc_conf[mi]); if (rv != NGX_CONF_OK) { *cf = pcf; return rv; } /* merge the locations{}' loc_conf's */ rv = ngx_http_merge_locations(cf, &cscfp[s]->locations, cscfp[s]->ctx->loc_conf, module, mi); if (rv != NGX_CONF_OK) { *cf = pcf; return rv; } } } } /* init lists of the handlers */ if (ngx_array_init(&cmcf->phases[NGX_HTTP_POST_READ_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_CONF_ERROR; } cmcf->phases[NGX_HTTP_POST_READ_PHASE].type = NGX_OK; if (ngx_array_init(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_CONF_ERROR; } cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].type = NGX_OK; /* the special find config phase for a single handler */ if (ngx_array_init(&cmcf->phases[NGX_HTTP_FIND_CONFIG_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_CONF_ERROR; } cmcf->phases[NGX_HTTP_FIND_CONFIG_PHASE].type = NGX_OK; h = ngx_array_push(&cmcf->phases[NGX_HTTP_FIND_CONFIG_PHASE].handlers); if (h == NULL) { return NGX_CONF_ERROR; } *h = ngx_http_find_location_config; if (ngx_array_init(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_CONF_ERROR; } cmcf->phases[NGX_HTTP_REWRITE_PHASE].type = NGX_OK; if (ngx_array_init(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers, cf->pool, 4, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_CONF_ERROR; } cmcf->phases[NGX_HTTP_ACCESS_PHASE].type = NGX_DECLINED; if (ngx_array_init(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers, cf->pool, 4, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_CONF_ERROR; } cmcf->phases[NGX_HTTP_CONTENT_PHASE].type = NGX_OK; cmcf->headers_in_hash.max_size = 100; cmcf->headers_in_hash.bucket_limit = 1; cmcf->headers_in_hash.bucket_size = sizeof(ngx_http_header_t); cmcf->headers_in_hash.name = "http headers_in"; if (ngx_hash_init(&cmcf->headers_in_hash, cf->pool, ngx_http_headers_in, 0) != NGX_OK) { return NGX_CONF_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "http headers_in hash size: %ui, max buckets per entry: %ui", cmcf->headers_in_hash.hash_size, cmcf->headers_in_hash.min_buckets); for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; mi = ngx_modules[m]->ctx_index; if (module->postconfiguration) { if (module->postconfiguration(cf) != NGX_OK) { return NGX_CONF_ERROR; } } } if (ngx_http_variables_init_vars(cf) != NGX_OK) { return NGX_CONF_ERROR; } /* * http{}'s cf->ctx was needed while the configuration merging * and in postconfiguration process */ *cf = pcf; /* * create the lists of ports, addresses and server names * to quickly find the server core module configuration at run-time */ if (ngx_array_init(&in_ports, cf->pool, 2, sizeof(ngx_http_in_port_t)) != NGX_OK) { return NGX_CONF_ERROR; } /* "server" directives */ cscfp = cmcf->servers.elts; for (s = 0; s < cmcf->servers.nelts; s++) { /* "listen" directives */ lscf = cscfp[s]->listen.elts; for (l = 0; l < cscfp[s]->listen.nelts; l++) { port_found = 0; /* AF_INET only */ in_port = in_ports.elts; for (p = 0; p < in_ports.nelts; p++) { if (lscf[l].port == in_port[p].port) { /* the port is already in the port list */ port_found = 1; addr_found = 0; in_addr = in_port[p].addrs.elts; for (a = 0; a < in_port[p].addrs.nelts; a++) { if (lscf[l].addr == in_addr[a].addr) { /* the address is already in the address list */ if (ngx_http_add_names(cf, &in_addr[a], cscfp[s]) != NGX_OK) { return NGX_CONF_ERROR; } /* * check the duplicate "default" server * for this address:port */ if (lscf[l].conf.default_server) { if (in_addr[a].conf.default_server) { ngx_log_error(NGX_LOG_ERR, cf->log, 0, "the duplicate default server in %V:%d", &lscf[l].file_name, lscf[l].line); return NGX_CONF_ERROR; } in_addr[a].core_srv_conf = cscfp[s]; in_addr[a].conf.default_server = 1; } addr_found = 1; break; } else if (in_addr[a].addr == INADDR_ANY) { /* the INADDR_ANY is always the last address */ inaddr = ngx_array_push(&in_port[p].addrs); if (inaddr == NULL) { return NGX_CONF_ERROR; } in_addr = in_port[p].addrs.elts; /* * the INADDR_ANY must be the last resort * so we move it to the end of the address list * and put the new address in its place */ ngx_memcpy(inaddr, &in_addr[a], sizeof(ngx_http_in_addr_t)); in_addr[a].addr = lscf[l].addr; in_addr[a].names.elts = NULL; in_addr[a].hash = NULL; in_addr[a].wildcards.elts = NULL; in_addr[a].core_srv_conf = cscfp[s]; in_addr[a].conf = lscf[l].conf; if (ngx_http_add_names(cf, &in_addr[a], cscfp[s]) != NGX_OK) { return NGX_CONF_ERROR; } addr_found = 1; break; } } if (!addr_found) { /* * add the address to the addresses list that * bound to this port */ if (ngx_http_add_address(cf, &in_port[p], &lscf[l], cscfp[s]) != NGX_OK) { return NGX_CONF_ERROR; } } } } if (!port_found) { /* add the port to the in_port list */ in_port = ngx_array_push(&in_ports); if (in_port == NULL) { return NGX_CONF_ERROR; } in_port->port = lscf[l].port; in_port->addrs.elts = NULL; in_port->port_text.data = ngx_palloc(cf->pool, 7); if (in_port->port_text.data == NULL) { return NGX_CONF_ERROR; } in_port->port_text.len = ngx_sprintf(in_port->port_text.data, ":%d", in_port->port) - in_port->port_text.data; if (ngx_http_add_address(cf, in_port, &lscf[l], cscfp[s]) != NGX_OK) { return NGX_CONF_ERROR; } } } } /* optimize the lists of ports, addresses and server names */ /* AF_INET only */ in_port = in_ports.elts; for (p = 0; p < in_ports.nelts; p++) { separate_binding = 0; /* * check whether all name-based servers have the same configuraiton * as the default server, or some servers restrict the host names */ in_addr = in_port[p].addrs.elts; for (a = 0; a < in_port[p].addrs.nelts; a++) { if (in_addr[a].conf.bind) { separate_binding = 1; } virtual_names = 0; name = in_addr[a].names.elts; for (n = 0; n < in_addr[a].names.nelts; n++) { if (in_addr[a].core_srv_conf != name[n].core_srv_conf || name[n].core_srv_conf->restrict_host_names != NGX_HTTP_RESTRICT_HOST_OFF) { virtual_names = 1; break; } } if (!virtual_names) { name = in_addr[a].wildcards.elts; for (n = 0; n < in_addr[a].wildcards.nelts; n++) { if (in_addr[a].core_srv_conf != name[n].core_srv_conf || name[n].core_srv_conf->restrict_host_names != NGX_HTTP_RESTRICT_HOST_OFF) { virtual_names = 1; break; } } } /* * if all name-based servers have the same configuration * as the default server, and no servers restrict the host names * then we do not need to check them at run-time at all */ if (!virtual_names) { in_addr[a].names.nelts = 0; continue; } ngx_qsort(in_addr[a].names.elts, in_addr[a].names.nelts, sizeof(ngx_http_server_name_t), ngx_cmp_server_names); /* create a hash for many names */ if (in_addr[a].names.nelts > cmcf->server_names_hash_threshold) { in_addr[a].hash = ngx_palloc(cf->pool, cmcf->server_names_hash * sizeof(ngx_array_t)); if (in_addr[a].hash == NULL) { return NGX_CONF_ERROR; } for (n = 0; n < cmcf->server_names_hash; n++) { if (ngx_array_init(&in_addr[a].hash[n], cf->pool, 4, sizeof(ngx_http_server_name_t)) != NGX_OK) { return NGX_CONF_ERROR; } } name = in_addr[a].names.elts; for (s = 0; s < in_addr[a].names.nelts; s++) { ngx_http_server_names_hash_key(key, name[s].name.data, name[s].name.len, cmcf->server_names_hash); s_name = ngx_array_push(&in_addr[a].hash[key]); if (s_name == NULL) { return NGX_CONF_ERROR; } name = in_addr[a].names.elts; *s_name = name[s]; } } } /* * if there is the binding to the "*:port" then we need to bind() * to the "*:port" only and ignore the other bindings */ if (in_addr[a - 1].addr == INADDR_ANY && !separate_binding) { a--; } else { a = 0; } in_addr = in_port[p].addrs.elts; while (a < in_port[p].addrs.nelts) { ls = ngx_listening_inet_stream_socket(cf, in_addr[a].addr, in_port[p].port); if (ls == NULL) { return NGX_CONF_ERROR; } ls->addr_ntop = 1; ls->handler = ngx_http_init_connection; cscf = in_addr[a].core_srv_conf; ls->pool_size = cscf->connection_pool_size; ls->post_accept_timeout = cscf->client_header_timeout; clcf = cscf->ctx->loc_conf[ngx_http_core_module.ctx_index]; ls->log = *clcf->err_log; ls->log.data = &ls->addr_text; ls->log.handler = ngx_accept_log_error; #if (NGX_WIN32) iocpcf = ngx_event_get_conf(cf->cycle->conf_ctx, ngx_iocp_module); if (iocpcf->acceptex_read) { ls->post_accept_buffer_size = cscf->client_header_buffer_size; } #endif ls->backlog = in_addr[a].conf.backlog; ls->rcvbuf = in_addr[a].conf.rcvbuf; ls->sndbuf = in_addr[a].conf.sndbuf; #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) ls->accept_filter = in_addr[a].conf.accept_filter; #endif #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) ls->deferred_accept = in_addr[a].conf.deferred_accept; #endif ls->ctx = ctx; if (in_port[p].addrs.nelts > 1) { in_addr = in_port[p].addrs.elts; if (in_addr[in_port[p].addrs.nelts - 1].addr != INADDR_ANY) { /* * if this port has not the "*:port" binding then create * the separate ngx_http_in_port_t for the all bindings */ inport = ngx_palloc(cf->pool, sizeof(ngx_http_in_port_t)); if (inport == NULL) { return NGX_CONF_ERROR; } inport->port = in_port[p].port; inport->port_text = in_port[p].port_text; /* init list of the addresses ... */ if (ngx_array_init(&inport->addrs, cf->pool, 1, sizeof(ngx_http_in_addr_t)) != NGX_OK) { return NGX_CONF_ERROR; } /* ... and set up it with the first address */ inport->addrs.nelts = 1; inport->addrs.elts = in_port[p].addrs.elts; ls->servers = inport; /* prepare for the next cycle */ in_port[p].addrs.elts = (char *) in_port[p].addrs.elts + in_port[p].addrs.size; in_port[p].addrs.nelts--; in_addr = (ngx_http_in_addr_t *) in_port[p].addrs.elts; a = 0; continue; } } ls->servers = &in_port[p]; a++; } } #if (NGX_DEBUG0) { u_char address[20]; ngx_uint_t p, a, nn; in_port = in_ports.elts; for (p = 0; p < in_ports.nelts; p++) { ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "port: %d %p", in_port[p].port, &in_port[p]); in_addr = in_port[p].addrs.elts; for (a = 0; a < in_port[p].addrs.nelts; a++) { ngx_inet_ntop(AF_INET, &in_addr[a].addr, address, 20); ngx_log_debug3(NGX_LOG_DEBUG_HTTP, cf->log, 0, "%s:%d %p", address, in_port[p].port, in_addr[a].core_srv_conf); s_name = in_addr[a].names.elts; for (n = 0; n < in_addr[a].names.nelts; n++) { ngx_log_debug4(NGX_LOG_DEBUG_HTTP, cf->log, 0, "%s:%d %V %p", address, in_port[p].port, &s_name[n].name, s_name[n].core_srv_conf); } } } } #endif return NGX_CONF_OK; } static int ngx_libc_cdecl ngx_cmp_server_names(const void *one, const void *two) { ngx_http_server_name_t *first = (ngx_http_server_name_t *) one; ngx_http_server_name_t *second = (ngx_http_server_name_t *) two; return ngx_strcmp(first->name.data, second->name.data); } /* * add the server address, the server names and the server core module * configurations to the port (in_port) */ static ngx_int_t ngx_http_add_address(ngx_conf_t *cf, ngx_http_in_port_t *in_port, ngx_http_listen_t *lscf, ngx_http_core_srv_conf_t *cscf) { ngx_http_in_addr_t *in_addr; if (in_port->addrs.elts == NULL) { if (ngx_array_init(&in_port->addrs, cf->pool, 4, sizeof(ngx_http_in_addr_t)) != NGX_OK) { return NGX_ERROR; } } in_addr = ngx_array_push(&in_port->addrs); if (in_addr == NULL) { return NGX_ERROR; } in_addr->addr = lscf->addr; in_addr->names.elts = NULL; in_addr->hash = NULL; in_addr->wildcards.elts = NULL; in_addr->core_srv_conf = cscf; in_addr->conf = lscf->conf; #if (NGX_DEBUG) { u_char text[20]; ngx_inet_ntop(AF_INET, &in_addr->addr, text, 20); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "address: %s:%d", text, in_port->port); } #endif return ngx_http_add_names(cf, in_addr, cscf); } /* * add the server names and the server core module * configurations to the address:port (in_addr) */ static ngx_int_t ngx_http_add_names(ngx_conf_t *cf, ngx_http_in_addr_t *in_addr, ngx_http_core_srv_conf_t *cscf) { ngx_uint_t i, n; ngx_array_t *array; ngx_http_server_name_t *server_names, *name; if (in_addr->names.elts == NULL) { if (ngx_array_init(&in_addr->names, cf->pool, 4, sizeof(ngx_http_server_name_t)) != NGX_OK) { return NGX_ERROR; } } if (in_addr->wildcards.elts == NULL) { if (ngx_array_init(&in_addr->wildcards, cf->pool, 1, sizeof(ngx_http_server_name_t)) != NGX_OK) { return NGX_ERROR; } } server_names = cscf->server_names.elts; for (i = 0; i < cscf->server_names.nelts; i++) { for (n = 0; n < server_names[i].name.len; n++) { server_names[i].name.data[n] = ngx_tolower(server_names[i].name.data[n]); } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0, "name: %V", &server_names[i].name); /* TODO: duplicate names can be checked here */ if (server_names[i].wildcard) { array = &in_addr->wildcards; } else { array = &in_addr->names; } name = ngx_array_push(array); if (name == NULL) { return NGX_ERROR; } server_names = cscf->server_names.elts; *name = server_names[i]; } return NGX_OK; } static char * ngx_http_merge_locations(ngx_conf_t *cf, ngx_array_t *locations, void **loc_conf, ngx_http_module_t *module, ngx_uint_t ctx_index) { char *rv; ngx_uint_t i; ngx_http_core_loc_conf_t **clcfp; clcfp = /* (ngx_http_core_loc_conf_t **) */ locations->elts; for (i = 0; i < locations->nelts; i++) { rv = module->merge_loc_conf(cf, loc_conf[ctx_index], clcfp[i]->loc_conf[ctx_index]); if (rv != NGX_CONF_OK) { return rv; } rv = ngx_http_merge_locations(cf, &clcfp[i]->locations, clcfp[i]->loc_conf, module, ctx_index); if (rv != NGX_CONF_OK) { return rv; } } return NGX_CONF_OK; }