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#include "first.h" |
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#include <stdlib.h> |
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#include <string.h> |
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#include "gw_backend.h" |
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typedef gw_plugin_config plugin_config; |
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typedef gw_plugin_data plugin_data; |
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typedef gw_handler_ctx handler_ctx; |
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#include "base.h" |
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#include "array.h" |
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#include "buffer.h" |
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#include "log.h" |
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#include "status_counter.h" |
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/**
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* |
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* socket proxy (with optional buffering) |
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* |
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*/ |
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SETDEFAULTS_FUNC(mod_sockproxy_set_defaults) { |
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plugin_data *p = p_d; |
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data_unset *du; |
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size_t i = 0; |
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config_values_t cv[] = { |
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{ "sockproxy.server", NULL, T_CONFIG_LOCAL, T_CONFIG_SCOPE_CONNECTION }, /* 0 */ |
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{ "sockproxy.debug", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 1 */ |
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{ "sockproxy.balance", NULL, T_CONFIG_LOCAL, T_CONFIG_SCOPE_CONNECTION }, /* 2 */ |
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{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET } |
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}; |
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p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *)); |
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force_assert(p->config_storage); |
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for (i = 0; i < srv->config_context->used; i++) { |
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data_config const* config = (data_config const*)srv->config_context->data[i]; |
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plugin_config *s; |
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s = calloc(1, sizeof(plugin_config)); |
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force_assert(s); |
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s->exts = NULL; |
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s->exts_auth = NULL; |
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s->exts_resp = NULL; |
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s->debug = 0; |
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cv[0].destination = NULL; /* T_CONFIG_LOCAL */ |
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cv[1].destination = &(s->debug); |
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cv[2].destination = NULL; /* T_CONFIG_LOCAL */ |
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p->config_storage[i] = s; |
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if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) { |
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return HANDLER_ERROR; |
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} |
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du = array_get_element(config->value, "sockproxy.server"); |
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if (!gw_set_defaults_backend(srv, (gw_plugin_data *)p, du, i, 0)) { |
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return HANDLER_ERROR; |
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} |
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du = array_get_element(config->value, "sockproxy.balance"); |
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if (!gw_set_defaults_balance(srv, s, du)) { |
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return HANDLER_ERROR; |
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} |
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/* disable check-local for all exts (default enabled) */ |
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if (s->exts) { /*(check after gw_set_defaults_backend())*/ |
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for (size_t j = 0; j < s->exts->used; ++j) { |
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gw_extension *ex = s->exts->exts[j]; |
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for (size_t n = 0; n < ex->used; ++n) { |
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ex->hosts[n]->check_local = 0; |
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} |
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} |
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} |
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} |
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return HANDLER_GO_ON; |
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} |
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static handler_t sockproxy_create_env_connect(server *srv, handler_ctx *hctx) { |
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connection *con = hctx->remote_conn; |
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con->file_started = 1; |
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gw_set_transparent(srv, hctx); |
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http_response_upgrade_read_body_unknown(srv, con); |
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status_counter_inc(srv, CONST_STR_LEN("sockproxy.requests")); |
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return HANDLER_GO_ON; |
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} |
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#define PATCH(x) \ |
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p->conf.x = s->x; |
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static int mod_sockproxy_patch_connection(server *srv, connection *con, plugin_data *p) { |
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size_t i, j; |
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plugin_config *s = p->config_storage[0]; |
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PATCH(exts); |
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PATCH(exts_auth); |
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PATCH(exts_resp); |
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PATCH(debug); |
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PATCH(ext_mapping); |
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PATCH(balance); |
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/* skip the first, the global context */ |
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for (i = 1; i < srv->config_context->used; i++) { |
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data_config *dc = (data_config *)srv->config_context->data[i]; |
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s = p->config_storage[i]; |
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/* condition didn't match */ |
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if (!config_check_cond(srv, con, dc)) continue; |
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/* merge config */ |
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for (j = 0; j < dc->value->used; j++) { |
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data_unset *du = dc->value->data[j]; |
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if (buffer_is_equal_string(du->key, CONST_STR_LEN("sockproxy.server"))) { |
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PATCH(exts); |
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PATCH(exts_auth); |
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PATCH(exts_resp); |
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} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("sockproxy.debug"))) { |
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PATCH(debug); |
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} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("sockproxy.balance"))) { |
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PATCH(balance); |
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} |
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} |
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} |
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return 0; |
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} |
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#undef PATCH |
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static handler_t mod_sockproxy_connection_accept(server *srv, connection *con, void *p_d) { |
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plugin_data *p = p_d; |
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handler_t rc; |
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if (con->mode != DIRECT) return HANDLER_GO_ON; |
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mod_sockproxy_patch_connection(srv, con, p); |
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if (NULL == p->conf.exts) return HANDLER_GO_ON; |
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/*(fake con->uri.path for matching purposes in gw_check_extension())*/ |
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buffer_copy_string_len(con->uri.path, CONST_STR_LEN("/")); |
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rc = gw_check_extension(srv, con, p, 1, 0); |
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if (HANDLER_GO_ON != rc) return rc; |
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if (con->mode == p->id) { |
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handler_ctx *hctx = con->plugin_ctx[p->id]; |
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hctx->opts.backend = BACKEND_PROXY; |
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hctx->create_env = sockproxy_create_env_connect; |
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hctx->response = buffer_init(); |
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con->http_status = -1; /*(skip HTTP processing)*/ |
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} |
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return HANDLER_GO_ON; |
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} |
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int mod_sockproxy_plugin_init(plugin *p); |
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int mod_sockproxy_plugin_init(plugin *p) { |
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p->version = LIGHTTPD_VERSION_ID; |
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p->name = buffer_init_string("sockproxy"); |
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p->init = gw_init; |
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p->cleanup = gw_free; |
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p->set_defaults = mod_sockproxy_set_defaults; |
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p->connection_reset = gw_connection_reset; |
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p->handle_connection_accept= mod_sockproxy_connection_accept; |
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p->handle_subrequest = gw_handle_subrequest; |
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p->handle_trigger = gw_handle_trigger; |
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p->handle_waitpid = gw_handle_waitpid_cb; |
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p->data = NULL; |
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return 0; |
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} |
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