/* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * Written by Bojan Smojver <bojan rexursive.com>: * * The argument to LogFormat and CustomLog is a string, which can include * literal characters copied into the log files, and '%' directives as * follows: * * %...I: bytes received, including request and headers, cannot be zero * %...O: bytes sent, including headers, cannot be zero * */ #include "apr_strings.h" #include "apr_lib.h" #include "apr_hash.h" #include "apr_optional.h" #define APR_WANT_STRFUNC #include "apr_want.h" #include "ap_config.h" #include "mod_log_config.h" #include "httpd.h" #include "http_core.h" #include "http_config.h" #include "http_connection.h" #include "http_protocol.h" module AP_MODULE_DECLARE_DATA logio_module; static const char logio_filter_name[] = "LOG_INPUT_OUTPUT"; /* * Logging of input and output config... */ typedef struct logio_config_t { apr_off_t bytes_in; apr_off_t bytes_out; } logio_config_t; /* * Optional function for the core to add to bytes_out */ static void ap_logio_add_bytes_out(conn_rec *c, apr_off_t bytes){ logio_config_t *cf = ap_get_module_config(c->conn_config, &logio_module); cf->bytes_out += bytes; } /* * Optional function for modules to adjust bytes_in */ static void ap_logio_add_bytes_in(conn_rec *c, apr_off_t bytes){ logio_config_t *cf = ap_get_module_config(c->conn_config, &logio_module); cf->bytes_in += bytes; } /* * Format items... */ static const char *log_bytes_in(request_rec *r, char *a) { logio_config_t *cf = ap_get_module_config(r->connection->conn_config, &logio_module); return apr_off_t_toa(r->pool, cf->bytes_in); } static const char *log_bytes_out(request_rec *r, char *a) { logio_config_t *cf = ap_get_module_config(r->connection->conn_config, &logio_module); return apr_off_t_toa(r->pool, cf->bytes_out); } /* * Reset counters after logging... */ static int logio_transaction(request_rec *r) { logio_config_t *cf = ap_get_module_config(r->connection->conn_config, &logio_module); cf->bytes_in = cf->bytes_out = 0; return OK; } /* * Logging of input and output filters... */ static apr_status_t logio_in_filter(ap_filter_t *f, apr_bucket_brigade *bb, ap_input_mode_t mode, apr_read_type_e block, apr_off_t readbytes) { apr_off_t length; apr_status_t status; logio_config_t *cf = ap_get_module_config(f->c->conn_config, &logio_module); status = ap_get_brigade(f->next, bb, mode, block, readbytes); apr_brigade_length (bb, 0, &length); if (length > 0) cf->bytes_in += length; return status; } static apr_status_t logio_out_filter(ap_filter_t *f, apr_bucket_brigade *bb) { apr_bucket *b = APR_BRIGADE_LAST(bb); /* End of data, make sure we flush */ if (APR_BUCKET_IS_EOS(b)) { APR_BUCKET_INSERT_BEFORE(b, apr_bucket_flush_create(f->c->bucket_alloc)); } return ap_pass_brigade(f->next, bb); } /* * The hooks... */ static int logio_pre_conn(conn_rec *c, void *csd) { logio_config_t *cf = apr_pcalloc(c->pool, sizeof(*cf)); ap_set_module_config(c->conn_config, &logio_module, cf); ap_add_input_filter(logio_filter_name, NULL, NULL, c); ap_add_output_filter(logio_filter_name, NULL, NULL, c); return OK; } static int logio_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp) { static APR_OPTIONAL_FN_TYPE(ap_register_log_handler) *log_pfn_register; log_pfn_register = APR_RETRIEVE_OPTIONAL_FN(ap_register_log_handler); if (log_pfn_register) { log_pfn_register(p, "I", log_bytes_in, 0); log_pfn_register(p, "O", log_bytes_out, 0); } return OK; } static void register_hooks(apr_pool_t *p) { static const char *pre[] = { "mod_log_config.c", NULL }; ap_hook_pre_connection(logio_pre_conn, NULL, NULL, APR_HOOK_MIDDLE); ap_hook_pre_config(logio_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST); ap_hook_log_transaction(logio_transaction, pre, NULL, APR_HOOK_MIDDLE); ap_register_input_filter(logio_filter_name, logio_in_filter, NULL, AP_FTYPE_NETWORK - 1); ap_register_output_filter(logio_filter_name, logio_out_filter, NULL, AP_FTYPE_NETWORK - 1); APR_REGISTER_OPTIONAL_FN(ap_logio_add_bytes_out); APR_REGISTER_OPTIONAL_FN(ap_logio_add_bytes_in); } module AP_MODULE_DECLARE_DATA logio_module = { STANDARD20_MODULE_STUFF, NULL, /* create per-dir config */ NULL, /* merge per-dir config */ NULL, /* server config */ NULL, /* merge server config */ NULL, /* command apr_table_t */ register_hooks /* register hooks */ };
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