/* * Copyright (C) Roman Arutyunyan * Copyright (C) Dmitry Volyntsev * Copyright (C) NGINX, Inc. */ #include #include #include #include "ngx_js.h" typedef struct { NGX_JS_COMMON_LOC_CONF; ngx_str_t access; ngx_str_t preread; ngx_str_t filter; } ngx_stream_js_srv_conf_t; typedef struct { njs_function_t *function; ngx_uint_t data_type; } ngx_stream_js_ev_t; typedef struct { ngx_stream_conf_ctx_t *conf_ctx; ngx_connection_t *connection; uint8_t *worker_affinity; /** * fd is used for event debug and should be at the same position * as in ngx_connection_t: after a 3rd pointer. */ ngx_socket_t fd; ngx_str_t method; ngx_msec_t interval; ngx_msec_t jitter; ngx_log_t log; ngx_event_t event; } ngx_js_periodic_t; typedef struct { NGX_JS_COMMON_CTX; njs_opaque_value_t retval; njs_opaque_value_t args[3]; ngx_buf_t *buf; ngx_chain_t **last_out; ngx_chain_t *free; ngx_chain_t *upstream_busy; ngx_chain_t *downstream_busy; ngx_int_t status; #define NGX_JS_EVENT_UPLOAD 0 #define NGX_JS_EVENT_DOWNLOAD 1 #define NGX_JS_EVENT_MAX 2 ngx_stream_js_ev_t events[2]; unsigned filter:1; unsigned in_progress:1; ngx_js_periodic_t *periodic; } ngx_stream_js_ctx_t; #define ngx_stream_pending(ctx) \ (ngx_vm_pending(ctx) \ || (ctx)->events[NGX_JS_EVENT_UPLOAD].function != NULL \ || (ctx)->events[NGX_JS_EVENT_DOWNLOAD].function != NULL) static ngx_int_t ngx_stream_js_access_handler(ngx_stream_session_t *s); static ngx_int_t ngx_stream_js_preread_handler(ngx_stream_session_t *s); static ngx_int_t ngx_stream_js_phase_handler(ngx_stream_session_t *s, ngx_str_t *name); static ngx_int_t ngx_stream_js_body_filter(ngx_stream_session_t *s, ngx_chain_t *in, ngx_uint_t from_upstream); static ngx_int_t ngx_stream_js_next_filter(ngx_stream_session_t *s, ngx_stream_js_ctx_t *ctx, ngx_chain_t *out, ngx_uint_t from_upstream); static ngx_int_t ngx_stream_js_variable_set(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_stream_js_variable_var(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_stream_js_init_vm(ngx_stream_session_t *s, njs_int_t proto_id); static void ngx_stream_js_drop_events(ngx_stream_js_ctx_t *ctx); static void ngx_stream_js_cleanup(void *data); static njs_int_t ngx_stream_js_run_event(ngx_stream_session_t *s, ngx_stream_js_ctx_t *ctx, ngx_stream_js_ev_t *event, ngx_uint_t from_upstream); static njs_function_t **ngx_stream_js_event(ngx_stream_session_t *s, njs_str_t *event); static njs_int_t ngx_stream_js_ext_get_remote_address(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval, njs_value_t *retval); static njs_int_t ngx_stream_js_ext_done(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval); static njs_int_t ngx_stream_js_ext_on(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval); static njs_int_t ngx_stream_js_ext_off(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval); static njs_int_t ngx_stream_js_ext_send(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t from_upstream, njs_value_t *retval); static njs_int_t ngx_stream_js_ext_set_return_value(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval); static njs_int_t ngx_stream_js_ext_variables(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval, njs_value_t *retval); static njs_int_t ngx_stream_js_periodic_variables(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval, njs_value_t *retval); static ngx_pool_t *ngx_stream_js_pool(njs_vm_t *vm, ngx_stream_session_t *s); static ngx_resolver_t *ngx_stream_js_resolver(njs_vm_t *vm, ngx_stream_session_t *s); static ngx_msec_t ngx_stream_js_resolver_timeout(njs_vm_t *vm, ngx_stream_session_t *s); static ngx_msec_t ngx_stream_js_fetch_timeout(njs_vm_t *vm, ngx_stream_session_t *s); static size_t ngx_stream_js_buffer_size(njs_vm_t *vm, ngx_stream_session_t *s); static size_t ngx_stream_js_max_response_buffer_size(njs_vm_t *vm, ngx_stream_session_t *s); static void ngx_stream_js_event_finalize(ngx_stream_session_t *s, ngx_int_t rc); static ngx_js_ctx_t *ngx_stream_js_ctx(njs_vm_t *vm, ngx_stream_session_t *s); static void ngx_stream_js_periodic_handler(ngx_event_t *ev); static void ngx_stream_js_periodic_event_handler(ngx_event_t *ev); static void ngx_stream_js_periodic_finalize(ngx_stream_session_t *s, ngx_int_t rc); static void ngx_stream_js_periodic_destroy(ngx_stream_session_t *s, ngx_js_periodic_t *periodic); static njs_int_t ngx_js_stream_init(njs_vm_t *vm); static ngx_int_t ngx_stream_js_init(ngx_conf_t *cf); static ngx_int_t ngx_stream_js_init_worker(ngx_cycle_t *cycle); static char *ngx_stream_js_periodic(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_stream_js_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_stream_js_var(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_int_t ngx_stream_js_init_conf_vm(ngx_conf_t *cf, ngx_js_loc_conf_t *conf); static void *ngx_stream_js_create_main_conf(ngx_conf_t *cf); static void *ngx_stream_js_create_srv_conf(ngx_conf_t *cf); static char *ngx_stream_js_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_stream_js_shared_dict_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_ssl_t *ngx_stream_js_ssl(njs_vm_t *vm, ngx_stream_session_t *s); static ngx_flag_t ngx_stream_js_ssl_verify(njs_vm_t *vm, ngx_stream_session_t *s); #if (NGX_STREAM_SSL) static ngx_conf_bitmask_t ngx_stream_js_ssl_protocols[] = { { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, { ngx_null_string, 0 } }; #endif static ngx_command_t ngx_stream_js_commands[] = { { ngx_string("js_import"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE13, ngx_js_import, NGX_STREAM_SRV_CONF_OFFSET, 0, NULL }, { ngx_string("js_periodic"), NGX_STREAM_SRV_CONF|NGX_CONF_ANY, ngx_stream_js_periodic, NGX_STREAM_SRV_CONF_OFFSET, 0, NULL }, { ngx_string("js_preload_object"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE13, ngx_js_preload_object, NGX_STREAM_SRV_CONF_OFFSET, 0, NULL }, { ngx_string("js_path"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_array_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, paths), NULL }, { ngx_string("js_set"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE2, ngx_stream_js_set, 0, 0, NULL }, { ngx_string("js_var"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE12, ngx_stream_js_var, 0, 0, NULL }, { ngx_string("js_access"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, access), NULL }, { ngx_string("js_preread"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, preread), NULL }, { ngx_string("js_filter"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, filter), NULL }, { ngx_string("js_fetch_buffer_size"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, buffer_size), NULL }, { ngx_string("js_fetch_max_response_buffer_size"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, max_response_body_size), NULL }, { ngx_string("js_fetch_timeout"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, timeout), NULL }, #if (NGX_STREAM_SSL) { ngx_string("js_fetch_ciphers"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, ssl_ciphers), NULL }, { ngx_string("js_fetch_protocols"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_1MORE, ngx_conf_set_bitmask_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, ssl_protocols), &ngx_stream_js_ssl_protocols }, { ngx_string("js_fetch_verify"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, ssl_verify), NULL }, { ngx_string("js_fetch_verify_depth"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, ssl_verify_depth), NULL }, { ngx_string("js_fetch_trusted_certificate"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_stream_js_srv_conf_t, ssl_trusted_certificate), NULL }, #endif { ngx_string("js_shared_dict_zone"), NGX_STREAM_MAIN_CONF|NGX_CONF_1MORE, ngx_stream_js_shared_dict_zone, 0, 0, NULL }, ngx_null_command }; static ngx_stream_module_t ngx_stream_js_module_ctx = { NULL, /* preconfiguration */ ngx_stream_js_init, /* postconfiguration */ ngx_stream_js_create_main_conf, /* create main configuration */ NULL, /* init main configuration */ ngx_stream_js_create_srv_conf, /* create server configuration */ ngx_stream_js_merge_srv_conf, /* merge server configuration */ }; ngx_module_t ngx_stream_js_module = { NGX_MODULE_V1, &ngx_stream_js_module_ctx, /* module context */ ngx_stream_js_commands, /* module directives */ NGX_STREAM_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ ngx_stream_js_init_worker, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static njs_external_t ngx_stream_js_ext_session[] = { { .flags = NJS_EXTERN_PROPERTY | NJS_EXTERN_SYMBOL, .name.symbol = NJS_SYMBOL_TO_STRING_TAG, .u.property = { .value = "Stream Session", } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("allow"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_done, .magic8 = NGX_OK, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("decline"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_done, .magic8 = -NGX_DECLINED, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("deny"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_done, .magic8 = -NGX_DONE, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("done"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_done, .magic8 = NGX_OK, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("error"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_js_ext_log, .magic8 = NGX_LOG_ERR, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("log"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_js_ext_log, .magic8 = NGX_LOG_INFO, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("off"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_off, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("on"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_on, } }, { .flags = NJS_EXTERN_OBJECT, .name.string = njs_str("rawVariables"), .u.object = { .writable = 1, .prop_handler = ngx_stream_js_ext_variables, .magic32 = NGX_JS_BUFFER, } }, { .flags = NJS_EXTERN_PROPERTY, .name.string = njs_str("remoteAddress"), .enumerable = 1, .u.property = { .handler = ngx_stream_js_ext_get_remote_address, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("send"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_send, .magic8 = NGX_JS_BOOL_UNSET, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("sendDownstream"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_send, .magic8 = NGX_JS_BOOL_TRUE, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("sendUpstream"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_send, .magic8 = NGX_JS_BOOL_FALSE, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("setReturnValue"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_stream_js_ext_set_return_value, } }, { .flags = NJS_EXTERN_PROPERTY, .name.string = njs_str("status"), .enumerable = 1, .u.property = { .handler = ngx_js_ext_uint, .magic32 = offsetof(ngx_stream_session_t, status), } }, { .flags = NJS_EXTERN_OBJECT, .name.string = njs_str("variables"), .u.object = { .writable = 1, .prop_handler = ngx_stream_js_ext_variables, .magic32 = NGX_JS_STRING, } }, { .flags = NJS_EXTERN_METHOD, .name.string = njs_str("warn"), .writable = 1, .configurable = 1, .enumerable = 1, .u.method = { .native = ngx_js_ext_log, .magic8 = NGX_LOG_WARN, } }, }; static njs_external_t ngx_stream_js_ext_periodic_session[] = { { .flags = NJS_EXTERN_PROPERTY | NJS_EXTERN_SYMBOL, .name.symbol = NJS_SYMBOL_TO_STRING_TAG, .u.property = { .value = "PeriodicSession", } }, { .flags = NJS_EXTERN_OBJECT, .name.string = njs_str("rawVariables"), .u.object = { .writable = 1, .prop_handler = ngx_stream_js_periodic_variables, .magic32 = NGX_JS_BUFFER, } }, { .flags = NJS_EXTERN_OBJECT, .name.string = njs_str("variables"), .u.object = { .writable = 1, .prop_handler = ngx_stream_js_periodic_variables, .magic32 = NGX_JS_STRING, } }, }; static njs_external_t ngx_stream_js_ext_session_flags[] = { { .flags = NJS_EXTERN_PROPERTY | NJS_EXTERN_SYMBOL, .name.symbol = NJS_SYMBOL_TO_STRING_TAG, .u.property = { .value = "Stream Flags", } }, { .flags = NJS_EXTERN_PROPERTY, .name.string = njs_str("from_upstream"), .enumerable = 1, .u.property = { .handler = ngx_js_ext_flags, .magic16 = NGX_JS_BOOLEAN, .magic32 = 0x00000002, } }, { .flags = NJS_EXTERN_PROPERTY, .name.string = njs_str("last"), .enumerable = 1, .u.property = { .handler = ngx_js_ext_flags, .magic16 = NGX_JS_BOOLEAN, .magic32 = 0x00000001, } }, }; static uintptr_t ngx_stream_js_uptr[] = { offsetof(ngx_stream_session_t, connection), (uintptr_t) ngx_stream_js_pool, (uintptr_t) ngx_stream_js_resolver, (uintptr_t) ngx_stream_js_resolver_timeout, (uintptr_t) ngx_stream_js_event_finalize, (uintptr_t) ngx_stream_js_ssl, (uintptr_t) ngx_stream_js_ssl_verify, (uintptr_t) ngx_stream_js_fetch_timeout, (uintptr_t) ngx_stream_js_buffer_size, (uintptr_t) ngx_stream_js_max_response_buffer_size, (uintptr_t) 0 /* main_conf ptr */, (uintptr_t) ngx_stream_js_ctx, }; static njs_vm_meta_t ngx_stream_js_metas = { .size = njs_nitems(ngx_stream_js_uptr), .values = ngx_stream_js_uptr }; static ngx_stream_filter_pt ngx_stream_next_filter; static njs_int_t ngx_stream_js_session_proto_id; static njs_int_t ngx_stream_js_periodic_session_proto_id; static njs_int_t ngx_stream_js_session_flags_proto_id; njs_module_t ngx_js_stream_module = { .name = njs_str("stream"), .preinit = NULL, .init = ngx_js_stream_init, }; njs_module_t *njs_stream_js_addon_modules[] = { /* * Shared addons should be in the same order and the same positions * in all nginx modules. */ &ngx_js_ngx_module, &ngx_js_fetch_module, &ngx_js_shared_dict_module, #ifdef NJS_HAVE_OPENSSL &njs_webcrypto_module, #endif #ifdef NJS_HAVE_XML &njs_xml_module, #endif #ifdef NJS_HAVE_ZLIB &njs_zlib_module, #endif &ngx_js_stream_module, NULL, }; static ngx_int_t ngx_stream_js_access_handler(ngx_stream_session_t *s) { ngx_stream_js_srv_conf_t *jscf; ngx_log_debug0(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "js access handler"); jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return ngx_stream_js_phase_handler(s, &jscf->access); } static ngx_int_t ngx_stream_js_preread_handler(ngx_stream_session_t *s) { ngx_stream_js_srv_conf_t *jscf; ngx_log_debug0(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "js preread handler"); jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return ngx_stream_js_phase_handler(s, &jscf->preread); } static ngx_int_t ngx_stream_js_phase_handler(ngx_stream_session_t *s, ngx_str_t *name) { ngx_str_t exception; njs_int_t ret; ngx_int_t rc; ngx_connection_t *c; ngx_stream_js_ctx_t *ctx; if (name->len == 0) { return NGX_DECLINED; } ngx_log_debug0(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "stream js phase handler"); rc = ngx_stream_js_init_vm(s, ngx_stream_js_session_proto_id); if (rc != NGX_OK) { return rc; } c = s->connection; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); if (!ctx->in_progress) { /* * status is expected to be overriden by allow(), deny(), decline() or * done() methods. */ ctx->status = NGX_ERROR; ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream js phase call \"%V\"", name); rc = ngx_js_name_call(ctx->vm, name, c->log, &ctx->args[0], 1); if (rc == NGX_ERROR) { return rc; } } ret = ngx_stream_js_run_event(s, ctx, &ctx->events[NGX_JS_EVENT_UPLOAD], 0); if (ret != NJS_OK) { ngx_js_exception(ctx->vm, &exception); ngx_log_error(NGX_LOG_ERR, c->log, 0, "js exception: %V", &exception); return NGX_ERROR; } if (ngx_stream_pending(ctx)) { ctx->in_progress = 1; rc = ctx->events[NGX_JS_EVENT_UPLOAD].function ? NGX_AGAIN : NGX_DONE; } else { ctx->in_progress = 0; rc = ctx->status; } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream js phase rc: %i", rc); return rc; } #define ngx_stream_event(from_upstream) \ (from_upstream ? &ctx->events[NGX_JS_EVENT_DOWNLOAD] \ : &ctx->events[NGX_JS_EVENT_UPLOAD]) static ngx_int_t ngx_stream_js_body_filter(ngx_stream_session_t *s, ngx_chain_t *in, ngx_uint_t from_upstream) { ngx_int_t rc; ngx_str_t exception; njs_int_t ret; ngx_chain_t *out, *cl; ngx_connection_t *c; ngx_stream_js_ev_t *event; ngx_stream_js_ctx_t *ctx; ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); if (jscf->filter.len == 0) { return ngx_stream_next_filter(s, in, from_upstream); } c = s->connection; ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream js filter u:%ui", from_upstream); rc = ngx_stream_js_init_vm(s, ngx_stream_js_session_proto_id); if (rc == NGX_ERROR) { return NGX_ERROR; } if (rc == NGX_DECLINED) { return ngx_stream_next_filter(s, in, from_upstream); } ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); if (!ctx->filter) { ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream js filter call \"%V\"" , &jscf->filter); rc = ngx_js_name_call(ctx->vm, &jscf->filter, c->log, &ctx->args[0], 1); if (rc == NGX_ERROR) { return rc; } } ctx->filter = 1; ctx->last_out = &out; while (in) { ctx->buf = in->buf; event = ngx_stream_event(from_upstream); if (event->function != NULL) { ret = ngx_stream_js_run_event(s, ctx, event, from_upstream); if (ret != NJS_OK) { ngx_js_exception(ctx->vm, &exception); ngx_log_error(NGX_LOG_ERR, c->log, 0, "js exception: %V", &exception); return NGX_ERROR; } ctx->buf->pos = ctx->buf->last; } else { cl = ngx_alloc_chain_link(c->pool); if (cl == NULL) { return NGX_ERROR; } cl->buf = ctx->buf; *ctx->last_out = cl; ctx->last_out = &cl->next; } in = in->next; } ctx->buf = NULL; *ctx->last_out = NULL; return ngx_stream_js_next_filter(s, ctx, out, from_upstream); } static ngx_int_t ngx_stream_js_next_filter(ngx_stream_session_t *s, ngx_stream_js_ctx_t *ctx, ngx_chain_t *out, ngx_uint_t from_upstream) { ngx_int_t rc; ngx_chain_t **busy; ngx_connection_t *c, *dst; c = s->connection; if (from_upstream) { dst = c; busy = &ctx->downstream_busy; } else { dst = s->upstream ? s->upstream->peer.connection : NULL; busy = &ctx->upstream_busy; } if (out != NULL || dst == NULL || dst->buffered) { rc = ngx_stream_next_filter(s, out, from_upstream); ngx_chain_update_chains(c->pool, &ctx->free, busy, &out, (ngx_buf_tag_t) &ngx_stream_js_module); } else { rc = NGX_OK; } return rc; } static ngx_int_t ngx_stream_js_variable_set(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data) { ngx_str_t *fname = (ngx_str_t *) data; ngx_int_t rc; njs_int_t pending; njs_str_t value; ngx_stream_js_ctx_t *ctx; rc = ngx_stream_js_init_vm(s, ngx_stream_js_session_proto_id); if (rc == NGX_ERROR) { return NGX_ERROR; } if (rc == NGX_DECLINED) { v->not_found = 1; return NGX_OK; } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "stream js variable call \"%V\"", fname); ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); pending = ngx_stream_pending(ctx); rc = ngx_js_name_invoke(ctx->vm, fname, s->connection->log, &ctx->args[0], 1, &ctx->retval); if (rc == NGX_ERROR) { v->not_found = 1; return NGX_OK; } if (!pending && rc == NGX_AGAIN) { ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, "async operation inside \"%V\" variable handler", fname); return NGX_ERROR; } if (ngx_js_string(ctx->vm, njs_value_arg(&ctx->retval), &value) != NGX_OK) { return NGX_ERROR; } v->len = value.length; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = value.start; return NGX_OK; } static ngx_int_t ngx_stream_js_variable_var(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data) { ngx_stream_complex_value_t *cv = (ngx_stream_complex_value_t *) data; ngx_str_t value; if (cv != NULL) { if (ngx_stream_complex_value(s, cv, &value) != NGX_OK) { return NGX_ERROR; } } else { ngx_str_null(&value); } v->len = value.len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = value.data; return NGX_OK; } static ngx_int_t ngx_stream_js_init_vm(ngx_stream_session_t *s, njs_int_t proto_id) { njs_int_t rc; njs_str_t key; ngx_str_t exception; ngx_uint_t i; njs_opaque_value_t retval; ngx_pool_cleanup_t *cln; ngx_js_named_path_t *preload; ngx_stream_js_ctx_t *ctx; ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); if (jscf->vm == NULL) { return NGX_DECLINED; } ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); if (ctx == NULL) { ctx = ngx_pcalloc(s->connection->pool, sizeof(ngx_stream_js_ctx_t)); if (ctx == NULL) { return NGX_ERROR; } ngx_js_ctx_init((ngx_js_ctx_t *) ctx); njs_value_invalid_set(njs_value_arg(&ctx->retval)); ngx_stream_set_ctx(s, ctx, ngx_stream_js_module); } if (ctx->vm) { return NGX_OK; } ctx->vm = njs_vm_clone(jscf->vm, s); if (ctx->vm == NULL) { return NGX_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "stream js vm clone: %p from: %p", ctx->vm, jscf->vm); cln = ngx_pool_cleanup_add(s->connection->pool, 0); if (cln == NULL) { return NGX_ERROR; } cln->handler = ngx_stream_js_cleanup; cln->data = s; /* bind objects from preload vm */ if (jscf->preload_objects != NGX_CONF_UNSET_PTR) { preload = jscf->preload_objects->elts; for (i = 0; i < jscf->preload_objects->nelts; i++) { key.start = preload[i].name.data; key.length = preload[i].name.len; rc = njs_vm_value(jscf->preload_vm, &key, njs_value_arg(&retval)); if (rc != NJS_OK) { return NGX_ERROR; } rc = njs_vm_bind(ctx->vm, &key, njs_value_arg(&retval), 0); if (rc != NJS_OK) { return NGX_ERROR; } } } if (njs_vm_start(ctx->vm, njs_value_arg(&retval)) == NJS_ERROR) { ngx_js_exception(ctx->vm, &exception); ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, "js exception: %V", &exception); return NGX_ERROR; } rc = njs_vm_external_create(ctx->vm, njs_value_arg(&ctx->args[0]), proto_id, s, 0); if (rc != NJS_OK) { return NGX_ERROR; } return NGX_OK; } static void ngx_stream_js_drop_events(ngx_stream_js_ctx_t *ctx) { ngx_uint_t i; for (i = 0; i < NGX_JS_EVENT_MAX; i++) { if (ctx->events[i].function != NULL) { ctx->events[i].function = NULL; } } } static void ngx_stream_js_cleanup(void *data) { ngx_stream_js_ctx_t *ctx; ngx_stream_session_t *s = data; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); ngx_stream_js_drop_events(ctx); if (ngx_vm_pending(ctx)) { ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, "pending events"); } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "stream js vm destroy: %p", ctx->vm); ngx_js_ctx_destroy((ngx_js_ctx_t *) ctx); } static njs_int_t ngx_stream_js_run_event(ngx_stream_session_t *s, ngx_stream_js_ctx_t *ctx, ngx_stream_js_ev_t *event, ngx_uint_t from_upstream) { size_t len; u_char *p; njs_int_t ret; ngx_buf_t *b; uintptr_t flags; ngx_connection_t *c; if (event->function == NULL) { return NJS_OK; } c = s->connection; b = ctx->filter ? ctx->buf : c->buffer; len = b ? b->last - b->pos : 0; p = ngx_pnalloc(c->pool, len); if (p == NULL) { njs_vm_memory_error(ctx->vm); return NJS_ERROR; } if (len) { ngx_memcpy(p, b->pos, len); } ret = ngx_js_prop(ctx->vm, event->data_type, njs_value_arg(&ctx->args[1]), p, len); if (ret != NJS_OK) { return ret; } flags = from_upstream << 1 | (uintptr_t) (b && b->last_buf); ret = njs_vm_external_create(ctx->vm, njs_value_arg(&ctx->args[2]), ngx_stream_js_session_flags_proto_id, (void *) flags, 0); if (ret != NJS_OK) { return NGX_ERROR; } return ngx_js_call(ctx->vm, event->function, njs_value_arg(&ctx->args[1]), 2); } static njs_function_t ** ngx_stream_js_event(ngx_stream_session_t *s, njs_str_t *event) { ngx_uint_t i, n, type; ngx_stream_js_ctx_t *ctx; static const struct { ngx_str_t name; ngx_uint_t data_type; ngx_uint_t id; } events[] = { { ngx_string("upload"), NGX_JS_STRING, NGX_JS_EVENT_UPLOAD, }, { ngx_string("download"), NGX_JS_STRING, NGX_JS_EVENT_DOWNLOAD, }, { ngx_string("upstream"), NGX_JS_BUFFER, NGX_JS_EVENT_UPLOAD, }, { ngx_string("downstream"), NGX_JS_BUFFER, NGX_JS_EVENT_DOWNLOAD, }, }; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); i = 0; n = sizeof(events) / sizeof(events[0]); while (i < n) { if (event->length == events[i].name.len && ngx_memcmp(event->start, events[i].name.data, event->length) == 0) { break; } i++; } if (i == n) { njs_vm_error(ctx->vm, "unknown event \"%V\"", event); return NULL; } ctx->events[events[i].id].data_type = events[i].data_type; for (n = 0; n < NGX_JS_EVENT_MAX; n++) { type = ctx->events[n].data_type; if (type != NGX_JS_UNSET && type != events[i].data_type) { njs_vm_error(ctx->vm, "mixing string and buffer events" " is not allowed"); return NULL; } } return &ctx->events[events[i].id].function; } static njs_int_t ngx_stream_js_ext_get_remote_address(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval, njs_value_t *retval) { ngx_connection_t *c; ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_session_proto_id, value); if (s == NULL) { njs_value_undefined_set(retval); return NJS_DECLINED; } c = s->connection; return njs_vm_value_string_create(vm, retval, c->addr_text.data, c->addr_text.len); } static njs_int_t ngx_stream_js_ext_done(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t magic, njs_value_t *retval) { ngx_int_t status; njs_value_t *code; ngx_stream_js_ctx_t *ctx; ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_session_proto_id, njs_argument(args, 0)); if (s == NULL) { njs_vm_error(vm, "\"this\" is not an external"); return NJS_ERROR; } status = (ngx_int_t) magic; status = -status; if (status == NGX_DONE) { status = NGX_STREAM_FORBIDDEN; } code = njs_arg(args, nargs, 1); if (!njs_value_is_undefined(code)) { if (ngx_js_integer(vm, code, &status) != NGX_OK) { return NJS_ERROR; } if (status < NGX_ABORT || status > NGX_STREAM_SERVICE_UNAVAILABLE) { njs_vm_error(vm, "code is out of range"); return NJS_ERROR; } } ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); if (ctx->filter) { njs_vm_error(vm, "should not be called while filtering"); return NJS_ERROR; } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "stream js set status: %i", status); ctx->status = status; ngx_stream_js_drop_events(ctx); njs_value_undefined_set(retval); return NJS_OK; } static njs_int_t ngx_stream_js_ext_on(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval) { njs_str_t name; njs_value_t *callback; njs_function_t **cb; ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_session_proto_id, njs_argument(args, 0)); if (s == NULL) { njs_vm_error(vm, "\"this\" is not an external"); return NJS_ERROR; } if (ngx_js_string(vm, njs_arg(args, nargs, 1), &name) == NJS_ERROR) { njs_vm_error(vm, "failed to convert event arg"); return NJS_ERROR; } callback = njs_arg(args, nargs, 2); if (!njs_value_is_function(callback)) { njs_vm_error(vm, "callback is not a function"); return NJS_ERROR; } cb = ngx_stream_js_event(s, &name); if (cb == NULL) { return NJS_ERROR; } if (*cb != NULL) { njs_vm_error(vm, "event handler \"%V\" is already set", &name); return NJS_ERROR; } *cb = njs_value_function(callback); njs_value_undefined_set(retval); return NJS_OK; } static njs_int_t ngx_stream_js_ext_off(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval) { njs_str_t name; njs_function_t **callback; ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_session_proto_id, njs_argument(args, 0)); if (s == NULL) { njs_vm_error(vm, "\"this\" is not an external"); return NJS_ERROR; } if (ngx_js_string(vm, njs_arg(args, nargs, 1), &name) == NJS_ERROR) { njs_vm_error(vm, "failed to convert event arg"); return NJS_ERROR; } callback = ngx_stream_js_event(s, &name); if (callback == NULL) { return NJS_ERROR; } *callback = NULL; njs_value_undefined_set(retval); return NJS_OK; } static njs_int_t ngx_stream_js_ext_send(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t from_upstream, njs_value_t *retval) { unsigned last_buf, flush; njs_str_t buffer; ngx_buf_t *b; njs_value_t *flags, *value; ngx_chain_t *cl; ngx_connection_t *c; njs_opaque_value_t lvalue; ngx_stream_js_ctx_t *ctx; ngx_stream_session_t *s; static const njs_str_t last_key = njs_str("last"); static const njs_str_t flush_key = njs_str("flush"); static const njs_str_t from_key = njs_str("from_upstream"); s = njs_vm_external(vm, ngx_stream_js_session_proto_id, njs_argument(args, 0)); if (s == NULL) { njs_vm_error(vm, "\"this\" is not an external"); return NJS_ERROR; } c = s->connection; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); if (!ctx->filter) { njs_vm_error(vm, "cannot send buffer in this handler"); return NJS_ERROR; } if (ngx_js_string(vm, njs_arg(args, nargs, 1), &buffer) != NGX_OK) { njs_vm_error(vm, "failed to get buffer arg"); return NJS_ERROR; } /* * ctx->buf != NULL when s.send() is called while processing incoming * data chunks, otherwise s.send() is called asynchronously */ if (ctx->buf != NULL) { flush = ctx->buf->flush; last_buf = ctx->buf->last_buf; } else { flush = 0; last_buf = 0; } flags = njs_arg(args, nargs, 2); if (njs_value_is_object(flags)) { value = njs_vm_object_prop(vm, flags, &flush_key, &lvalue); if (value != NULL) { flush = njs_value_bool(value); } value = njs_vm_object_prop(vm, flags, &last_key, &lvalue); if (value != NULL) { last_buf = njs_value_bool(value); } if (from_upstream == NGX_JS_BOOL_UNSET) { value = njs_vm_object_prop(vm, flags, &from_key, &lvalue); if (value != NULL) { from_upstream = njs_value_bool(value); } if (value == NULL && ctx->buf == NULL) { goto exception; } } } cl = ngx_chain_get_free_buf(c->pool, &ctx->free); if (cl == NULL) { njs_vm_error(vm, "memory error"); return NJS_ERROR; } b = cl->buf; b->flush = flush; b->last_buf = last_buf; b->memory = (buffer.length ? 1 : 0); b->sync = (buffer.length ? 0 : 1); b->tag = (ngx_buf_tag_t) &ngx_stream_js_module; b->start = buffer.start; b->end = buffer.start + buffer.length; b->pos = b->start; b->last = b->end; if (from_upstream == NGX_JS_BOOL_UNSET) { *ctx->last_out = cl; ctx->last_out = &cl->next; } else { if (ngx_stream_js_next_filter(s, ctx, cl, from_upstream) == NGX_ERROR) { njs_vm_error(vm, "ngx_stream_js_next_filter() failed"); return NJS_ERROR; } } njs_value_undefined_set(retval); return NJS_OK; exception: njs_vm_error(vm, "\"from_upstream\" flag is expected when" "called asynchronously"); return NJS_ERROR; } static njs_int_t ngx_stream_js_ext_set_return_value(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs, njs_index_t unused, njs_value_t *retval) { ngx_stream_js_ctx_t *ctx; ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_session_proto_id, njs_argument(args, 0)); if (s == NULL) { njs_vm_error(vm, "\"this\" is not an external"); return NJS_ERROR; } ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); njs_value_assign(&ctx->retval, njs_arg(args, nargs, 1)); njs_value_undefined_set(retval); return NJS_OK; } static njs_int_t ngx_stream_js_session_variables(njs_vm_t *vm, njs_object_prop_t *prop, ngx_stream_session_t *s, njs_value_t *setval, njs_value_t *retval) { njs_int_t rc; njs_str_t val; ngx_str_t name; ngx_uint_t key; ngx_stream_variable_t *v; ngx_stream_core_main_conf_t *cmcf; ngx_stream_variable_value_t *vv; rc = njs_vm_prop_name(vm, prop, &val); if (rc != NJS_OK) { njs_value_undefined_set(retval); return NJS_DECLINED; } name.data = val.start; name.len = val.length; if (setval == NULL) { key = ngx_hash_strlow(name.data, name.data, name.len); vv = ngx_stream_get_variable(s, &name, key); if (vv == NULL || vv->not_found) { njs_value_undefined_set(retval); return NJS_DECLINED; } return ngx_js_prop(vm, njs_vm_prop_magic32(prop), retval, vv->data, vv->len); } cmcf = ngx_stream_get_module_main_conf(s, ngx_stream_core_module); key = ngx_hash_strlow(name.data, name.data, name.len); v = ngx_hash_find(&cmcf->variables_hash, key, name.data, name.len); if (v == NULL) { njs_vm_error(vm, "variable not found"); return NJS_ERROR; } if (ngx_js_string(vm, setval, &val) != NGX_OK) { return NJS_ERROR; } if (v->set_handler != NULL) { vv = ngx_pcalloc(s->connection->pool, sizeof(ngx_stream_variable_value_t)); if (vv == NULL) { return NJS_ERROR; } vv->valid = 1; vv->not_found = 0; vv->data = val.start; vv->len = val.length; v->set_handler(s, vv, v->data); return NJS_OK; } if (!(v->flags & NGX_STREAM_VAR_INDEXED)) { njs_vm_error(vm, "variable is not writable"); return NJS_ERROR; } vv = &s->variables[v->index]; vv->valid = 1; vv->not_found = 0; vv->data = ngx_pnalloc(s->connection->pool, val.length); if (vv->data == NULL) { return NJS_ERROR; } vv->len = val.length; ngx_memcpy(vv->data, val.start, vv->len); return NJS_OK; } static njs_int_t ngx_stream_js_ext_variables(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval, njs_value_t *retval) { ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_session_proto_id, value); if (s == NULL) { njs_value_undefined_set(retval); return NJS_DECLINED; } return ngx_stream_js_session_variables(vm, prop, s, setval, retval); } static njs_int_t ngx_stream_js_periodic_variables(njs_vm_t *vm, njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval, njs_value_t *retval) { ngx_stream_session_t *s; s = njs_vm_external(vm, ngx_stream_js_periodic_session_proto_id, value); if (s == NULL) { njs_value_undefined_set(retval); return NJS_DECLINED; } return ngx_stream_js_session_variables(vm, prop, s, setval, retval); } static ngx_pool_t * ngx_stream_js_pool(njs_vm_t *vm, ngx_stream_session_t *s) { return s->connection->pool; } static ngx_resolver_t * ngx_stream_js_resolver(njs_vm_t *vm, ngx_stream_session_t *s) { ngx_stream_core_srv_conf_t *cscf; cscf = ngx_stream_get_module_srv_conf(s, ngx_stream_core_module); return cscf->resolver; } static ngx_msec_t ngx_stream_js_resolver_timeout(njs_vm_t *vm, ngx_stream_session_t *s) { ngx_stream_core_srv_conf_t *cscf; cscf = ngx_stream_get_module_srv_conf(s, ngx_stream_core_module); return cscf->resolver_timeout; } static ngx_msec_t ngx_stream_js_fetch_timeout(njs_vm_t *vm, ngx_stream_session_t *s) { ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return jscf->timeout; } static size_t ngx_stream_js_buffer_size(njs_vm_t *vm, ngx_stream_session_t *s) { ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return jscf->buffer_size; } static size_t ngx_stream_js_max_response_buffer_size(njs_vm_t *vm, ngx_stream_session_t *s) { ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return jscf->max_response_body_size; } static void ngx_stream_js_event_finalize(ngx_stream_session_t *s, ngx_int_t rc) { ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "http js event finalize rc: %i", rc); if (rc == NGX_ERROR) { if (s->health_check) { ngx_stream_js_periodic_finalize(s, NGX_ERROR); return; } ngx_stream_finalize_session(s, NGX_STREAM_INTERNAL_SERVER_ERROR); return; } if (rc == NGX_OK) { ngx_post_event(s->connection->read, &ngx_posted_events); } } static ngx_js_ctx_t * ngx_stream_js_ctx(njs_vm_t *vm, ngx_stream_session_t *s) { return ngx_stream_get_module_ctx(s, ngx_stream_js_module); } static njs_int_t ngx_js_stream_init(njs_vm_t *vm) { ngx_stream_js_session_proto_id = njs_vm_external_prototype(vm, ngx_stream_js_ext_session, njs_nitems(ngx_stream_js_ext_session)); if (ngx_stream_js_session_proto_id < 0) { return NJS_ERROR; } ngx_stream_js_periodic_session_proto_id = njs_vm_external_prototype(vm, ngx_stream_js_ext_periodic_session, njs_nitems(ngx_stream_js_ext_periodic_session)); if (ngx_stream_js_periodic_session_proto_id < 0) { return NJS_ERROR; } ngx_stream_js_session_flags_proto_id = njs_vm_external_prototype(vm, ngx_stream_js_ext_session_flags, njs_nitems(ngx_stream_js_ext_session_flags)); if (ngx_stream_js_session_flags_proto_id < 0) { return NJS_ERROR; } return NJS_OK; } static ngx_int_t ngx_stream_js_init_conf_vm(ngx_conf_t *cf, ngx_js_loc_conf_t *conf) { njs_vm_opt_t options; ngx_js_main_conf_t *jmcf; njs_vm_opt_init(&options); jmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_js_module); ngx_stream_js_uptr[NGX_JS_MAIN_CONF_INDEX] = (uintptr_t) jmcf; options.backtrace = 1; options.metas = &ngx_stream_js_metas; options.addons = njs_stream_js_addon_modules; options.argv = ngx_argv; options.argc = ngx_argc; return ngx_js_init_conf_vm(cf, conf, &options); } static void ngx_stream_js_periodic_handler(ngx_event_t *ev) { ngx_int_t rc; ngx_msec_t timer; ngx_js_periodic_t *periodic; ngx_connection_t *c; ngx_stream_js_ctx_t *ctx; ngx_stream_session_t *s; ngx_stream_core_main_conf_t *cmcf; if (ngx_terminate || ngx_exiting) { return; } periodic = ev->data; timer = periodic->interval; if (periodic->jitter) { timer += (ngx_msec_t) ngx_random() % periodic->jitter; } ngx_add_timer(&periodic->event, timer); c = periodic->connection; if (c != NULL) { ngx_log_error(NGX_LOG_ERR, c->log, 0, "stream js periodic \"%V\" is already running, killing " "previous instance", &periodic->method); ngx_stream_js_periodic_finalize(c->data, NGX_ERROR); } ngx_log_debug1(NGX_LOG_DEBUG_STREAM, &periodic->log, 0, "stream js periodic handler: \"%V\"", &periodic->method); c = ngx_get_connection(0, &periodic->log); if (c == NULL) { return; } c->pool = ngx_create_pool(1024, c->log); if (c->pool == NULL) { goto free_connection; } s = ngx_pcalloc(c->pool, sizeof(ngx_stream_session_t)); if (s == NULL) { goto free_pool; } s->main_conf = periodic->conf_ctx->main_conf; s->srv_conf = periodic->conf_ctx->srv_conf; s->ctx = ngx_pcalloc(c->pool, sizeof(void *) * ngx_stream_max_module); if (s->ctx == NULL) { goto free_pool; } cmcf = ngx_stream_get_module_main_conf(s, ngx_stream_core_module); s->variables = ngx_pcalloc(c->pool, cmcf->variables.nelts * sizeof(ngx_stream_variable_value_t)); if (s->variables == NULL) { goto free_pool; } c->data = s; c->destroyed = 0; c->read->log = &periodic->log; c->read->handler = ngx_stream_js_periodic_event_handler; s->received = 1; s->connection = c; s->signature = NGX_STREAM_MODULE; s->health_check = 1; rc = ngx_stream_js_init_vm(s, ngx_stream_js_periodic_session_proto_id); if (rc != NGX_OK) { ngx_stream_js_periodic_destroy(s, periodic); return; } periodic->connection = c; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); ctx->periodic = periodic; s->received++; rc = ngx_js_name_invoke(ctx->vm, &periodic->method, &periodic->log, &ctx->args[0], 1, &ctx->retval); if (rc == NGX_AGAIN) { rc = NGX_OK; } s->received--; ngx_stream_js_periodic_finalize(s, rc); return; free_pool: ngx_destroy_pool(c->pool); free_connection: ngx_close_connection(c); } static void ngx_stream_js_periodic_event_handler(ngx_event_t *ev) { ngx_connection_t *c; ngx_stream_js_ctx_t *ctx; ngx_stream_session_t *s; c = ev->data; ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream js periodic event handler"); if (c->close) { ngx_stream_js_periodic_finalize(c->data, NGX_ERROR); return; } s = c->data; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); if (!ngx_vm_pending(ctx)) { ngx_stream_js_periodic_finalize(s, NGX_OK); return; } } static void ngx_stream_js_periodic_finalize(ngx_stream_session_t *s, ngx_int_t rc) { ngx_stream_js_ctx_t *ctx; ctx = ngx_stream_get_module_ctx(s, ngx_stream_js_module); ngx_log_debug4(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, "stream js periodic finalize: \"%V\" rc: %i c: %i " "pending: %i", &ctx->periodic->method, rc, s->received, ngx_vm_pending(ctx)); if (s->received > 1 || (rc == NGX_OK && ngx_vm_pending(ctx))) { return; } ngx_stream_js_periodic_destroy(s, ctx->periodic); } static void ngx_stream_js_periodic_destroy(ngx_stream_session_t *s, ngx_js_periodic_t *periodic) { ngx_connection_t *c; c = s->connection; ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0, "stream js periodic request destroy: \"%V\"", &periodic->method); periodic->connection = NULL; ngx_free_connection(c); ngx_destroy_pool(c->pool); c->fd = (ngx_socket_t) -1; c->pool = NULL; c->destroyed = 1; if (c->read->posted) { ngx_delete_posted_event(c->read); } } static ngx_int_t ngx_stream_js_periodic_init(ngx_js_periodic_t *periodic) { ngx_log_t *log; ngx_msec_t jitter; ngx_stream_core_srv_conf_t *cscf; cscf = ngx_stream_get_module_srv_conf(periodic->conf_ctx, ngx_stream_core_module); log = cscf->error_log; ngx_memcpy(&periodic->log, log, sizeof(ngx_log_t)); periodic->connection = NULL; periodic->event.handler = ngx_stream_js_periodic_handler; periodic->event.data = periodic; periodic->event.log = log; periodic->event.cancelable = 1; jitter = periodic->jitter ? (ngx_msec_t) ngx_random() % periodic->jitter : 0; ngx_add_timer(&periodic->event, jitter + 1); return NGX_OK; } static ngx_int_t ngx_stream_js_init_worker(ngx_cycle_t *cycle) { ngx_uint_t i; ngx_js_periodic_t *periodics; ngx_js_main_conf_t *jmcf; if ((ngx_process != NGX_PROCESS_WORKER) && ngx_process != NGX_PROCESS_SINGLE) { return NGX_OK; } jmcf = ngx_stream_cycle_get_module_main_conf(cycle, ngx_stream_js_module); if (jmcf == NULL || jmcf->periodics == NULL) { return NGX_OK; } periodics = jmcf->periodics->elts; for (i = 0; i < jmcf->periodics->nelts; i++) { if (periodics[i].worker_affinity != NULL && !periodics[i].worker_affinity[ngx_worker]) { continue; } if (periodics[i].worker_affinity == NULL && ngx_worker != 0) { continue; } periodics[i].fd = 1000000 + i; if (ngx_stream_js_periodic_init(&periodics[i]) != NGX_OK) { return NGX_ERROR; } } return NGX_OK; } static char * ngx_stream_js_periodic(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { uint8_t *mask; ngx_str_t *value, s; ngx_msec_t interval, jitter; ngx_uint_t i; ngx_core_conf_t *ccf; ngx_js_periodic_t *periodic; ngx_js_main_conf_t *jmcf; if (cf->args->nelts < 2) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "method name is required"); return NGX_CONF_ERROR; } jmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_js_module); if (jmcf->periodics == NULL) { jmcf->periodics = ngx_array_create(cf->pool, 1, sizeof(ngx_js_periodic_t)); if (jmcf->periodics == NULL) { return NGX_CONF_ERROR; } } periodic = ngx_array_push(jmcf->periodics); if (periodic == NULL) { return NGX_CONF_ERROR; } ngx_memzero(periodic, sizeof(ngx_js_periodic_t)); mask = NULL; jitter = 0; interval = 5000; value = cf->args->elts; for (i = 2; i < cf->args->nelts; i++) { if (ngx_strncmp(value[i].data, "interval=", 9) == 0) { s.len = value[i].len - 9; s.data = value[i].data + 9; interval = ngx_parse_time(&s, 0); if (interval == (ngx_msec_t) NGX_ERROR || interval == 0) { goto invalid; } continue; } if (ngx_strncmp(value[i].data, "jitter=", 7) == 0) { s.len = value[i].len - 7; s.data = value[i].data + 7; jitter = ngx_parse_time(&s, 0); if (jitter == (ngx_msec_t) NGX_ERROR) { goto invalid; } continue; } if (ngx_strncmp(value[i].data, "worker_affinity=", 16) == 0) { s.len = value[i].len - 16; s.data = value[i].data + 16; ccf = (ngx_core_conf_t *) ngx_get_conf(cf->cycle->conf_ctx, ngx_core_module); if (ccf->worker_processes == NGX_CONF_UNSET) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"worker_affinity\" is not supported " "with unset \"worker_processes\" directive"); return NGX_CONF_ERROR; } mask = ngx_palloc(cf->pool, ccf->worker_processes); if (mask == NULL) { return NGX_CONF_ERROR; } if (ngx_strncmp(s.data, "all", 3) == 0) { memset(mask, 1, ccf->worker_processes); continue; } if ((size_t) ccf->worker_processes != s.len) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "the number of " "\"worker_processes\" is not equal to the " "size of \"worker_affinity\" mask"); return NGX_CONF_ERROR; } for (i = 0; i < s.len; i++) { if (s.data[i] == '0') { mask[i] = 0; continue; } if (s.data[i] == '1') { mask[i] = 1; continue; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid character \"%c\" in \"worker_affinity=\"", s.data[i]); return NGX_CONF_ERROR; } continue; } invalid: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[i]); return NGX_CONF_ERROR; } periodic->method = value[1]; periodic->interval = interval; periodic->jitter = jitter; periodic->worker_affinity = mask; periodic->conf_ctx = cf->ctx; return NGX_CONF_OK; } static char * ngx_stream_js_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_str_t *value, *fname, *prev; ngx_stream_variable_t *v; value = cf->args->elts; if (value[1].data[0] != '$') { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid variable name \"%V\"", &value[1]); return NGX_CONF_ERROR; } value[1].len--; value[1].data++; v = ngx_stream_add_variable(cf, &value[1], NGX_STREAM_VAR_CHANGEABLE); if (v == NULL) { return NGX_CONF_ERROR; } fname = ngx_palloc(cf->pool, sizeof(ngx_str_t)); if (fname == NULL) { return NGX_CONF_ERROR; } *fname = value[2]; if (v->get_handler == ngx_stream_js_variable_set) { prev = (ngx_str_t *) v->data; if (fname->len != prev->len || ngx_strncmp(fname->data, prev->data, fname->len) != 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "variable \"%V\" is redeclared with " "different function name", &value[1]); return NGX_CONF_ERROR; } } v->get_handler = ngx_stream_js_variable_set; v->data = (uintptr_t) fname; return NGX_CONF_OK; } static char * ngx_stream_js_var(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_str_t *value; ngx_int_t index; ngx_stream_variable_t *v; ngx_stream_complex_value_t *cv; ngx_stream_compile_complex_value_t ccv; value = cf->args->elts; if (value[1].data[0] != '$') { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid variable name \"%V\"", &value[1]); return NGX_CONF_ERROR; } value[1].len--; value[1].data++; v = ngx_stream_add_variable(cf, &value[1], NGX_STREAM_VAR_CHANGEABLE); if (v == NULL) { return NGX_CONF_ERROR; } index = ngx_stream_get_variable_index(cf, &value[1]); if (index == NGX_ERROR) { return NGX_CONF_ERROR; } cv = NULL; if (cf->args->nelts == 3) { cv = ngx_palloc(cf->pool, sizeof(ngx_stream_complex_value_t)); if (cv == NULL) { return NGX_CONF_ERROR; } ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[2]; ccv.complex_value = cv; if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } } v->get_handler = ngx_stream_js_variable_var; v->data = (uintptr_t) cv; return NGX_CONF_OK; } static void * ngx_stream_js_create_main_conf(ngx_conf_t *cf) { ngx_js_main_conf_t *jmcf; jmcf = ngx_pcalloc(cf->pool, sizeof(ngx_js_main_conf_t)); if (jmcf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * jmcf->dicts = NULL; * jmcf->periodics = NULL; */ return jmcf; } static void * ngx_stream_js_create_srv_conf(ngx_conf_t *cf) { ngx_stream_js_srv_conf_t *conf = (ngx_stream_js_srv_conf_t *) ngx_js_create_conf( cf, sizeof(ngx_stream_js_srv_conf_t)); if (conf == NULL) { return NULL; } #if (NGX_STREAM_SSL) conf->ssl_verify = NGX_CONF_UNSET; conf->ssl_verify_depth = NGX_CONF_UNSET; #endif return conf; } static char * ngx_stream_js_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_stream_js_srv_conf_t *prev = parent; ngx_stream_js_srv_conf_t *conf = child; ngx_conf_merge_str_value(conf->access, prev->access, ""); ngx_conf_merge_str_value(conf->preread, prev->preread, ""); ngx_conf_merge_str_value(conf->filter, prev->filter, ""); return ngx_js_merge_conf(cf, parent, child, ngx_stream_js_init_conf_vm); } static char * ngx_stream_js_shared_dict_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { return ngx_js_shared_dict_zone(cf, cmd, conf, &ngx_stream_js_module); } static ngx_int_t ngx_stream_js_init(ngx_conf_t *cf) { ngx_stream_handler_pt *h; ngx_stream_core_main_conf_t *cmcf; ngx_stream_next_filter = ngx_stream_top_filter; ngx_stream_top_filter = ngx_stream_js_body_filter; cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module); h = ngx_array_push(&cmcf->phases[NGX_STREAM_ACCESS_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_stream_js_access_handler; h = ngx_array_push(&cmcf->phases[NGX_STREAM_PREREAD_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_stream_js_preread_handler; return NGX_OK; } static ngx_ssl_t * ngx_stream_js_ssl(njs_vm_t *vm, ngx_stream_session_t *s) { #if (NGX_STREAM_SSL) ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return jscf->ssl; #else return NULL; #endif } static ngx_flag_t ngx_stream_js_ssl_verify(njs_vm_t *vm, ngx_stream_session_t *s) { #if (NGX_STREAM_SSL) ngx_stream_js_srv_conf_t *jscf; jscf = ngx_stream_get_module_srv_conf(s, ngx_stream_js_module); return jscf->ssl_verify; #else return 0; #endif }