--- /dev/null
+/* 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.
+ */
+
+/*
+ * Originally written @ Covalent by Jim Jagielski
+ */
+
+/*
+ * mod_dumpio.c:
+ * Think of this as a filter sniffer for Apache 2.x. It logs
+ * all filter data right before and after it goes out on the
+ * wire (BUT right before SSL encoded or after SSL decoded).
+ * It can produce a *huge* amount of data.
+ */
+
+
+#include "httpd.h"
+#include "http_connection.h"
+#include "http_config.h"
+#include "http_core.h"
+#include "http_log.h"
+
+module AP_MODULE_DECLARE_DATA dumpio_module ;
+
+typedef struct dumpio_conf_t {
+ int enable_input;
+ int enable_output;
+} dumpio_conf_t;
+
+/*
+ * Workhorse function: simply log to the current error_log
+ * info about the data in the bucket as well as the data itself
+ */
+static void dumpit(ap_filter_t *f, apr_bucket *b)
+{
+ conn_rec *c = f->c;
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server,
+ "mod_dumpio: %s (%s-%s): %" APR_SIZE_T_FMT " bytes",
+ f->frec->name,
+ (APR_BUCKET_IS_METADATA(b)) ? "metadata" : "data",
+ b->type->name,
+ b->length) ;
+
+ if (!(APR_BUCKET_IS_METADATA(b))) {
+ const char *buf;
+ apr_size_t nbytes;
+ char *obuf;
+ if (apr_bucket_read(b, &buf, &nbytes, APR_BLOCK_READ) == APR_SUCCESS) {
+ if (nbytes) {
+ obuf = malloc(nbytes+1); /* use pool? */
+ memcpy(obuf, buf, nbytes);
+ obuf[nbytes] = '\0';
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server,
+ "mod_dumpio: %s (%s-%s): %s",
+ f->frec->name,
+ (APR_BUCKET_IS_METADATA(b)) ? "metadata" : "data",
+ b->type->name,
+ obuf);
+ free(obuf);
+ }
+ } else {
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server,
+ "mod_dumpio: %s (%s-%s): %s",
+ f->frec->name,
+ (APR_BUCKET_IS_METADATA(b)) ? "metadata" : "data",
+ b->type->name,
+ "error reading data");
+ }
+ }
+}
+
+#define whichmode( mode ) \
+ ( (( mode ) == AP_MODE_READBYTES) ? "readbytes" : \
+ (( mode ) == AP_MODE_GETLINE) ? "getline" : \
+ (( mode ) == AP_MODE_EATCRLF) ? "eatcrlf" : \
+ (( mode ) == AP_MODE_SPECULATIVE) ? "speculative" : \
+ (( mode ) == AP_MODE_EXHAUSTIVE) ? "exhaustive" : \
+ (( mode ) == AP_MODE_INIT) ? "init" : "unknown" \
+ )
+
+static int dumpio_input_filter (ap_filter_t *f, apr_bucket_brigade *bb,
+ ap_input_mode_t mode, apr_read_type_e block, apr_off_t readbytes)
+{
+
+ apr_bucket *b;
+ apr_status_t ret;
+ conn_rec *c = f->c;
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server,
+ "mod_dumpio: %s [%s-%s] %" APR_OFF_T_FMT " readbytes",
+ f->frec->name,
+ whichmode(mode),
+ ((block) == APR_BLOCK_READ) ? "blocking" : "nonblocking",
+ readbytes) ;
+
+ ret = ap_get_brigade(f->next, bb, mode, block, readbytes);
+
+ if (ret == APR_SUCCESS) {
+ for (b = APR_BRIGADE_FIRST(bb); b != APR_BRIGADE_SENTINEL(bb); b = APR_BUCKET_NEXT(b)) {
+ dumpit(f, b);
+ }
+ } else {
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server,
+ "mod_dumpio: %s - %d", f->frec->name, ret) ;
+ }
+
+ return APR_SUCCESS ;
+}
+
+static int dumpio_output_filter (ap_filter_t *f, apr_bucket_brigade *bb)
+{
+ apr_bucket *b;
+ conn_rec *c = f->c;
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server, "mod_dumpio: %s", f->frec->name) ;
+
+ for (b = APR_BRIGADE_FIRST(bb); b != APR_BRIGADE_SENTINEL(bb); b = APR_BUCKET_NEXT(b)) {
+ /*
+ * If we ever see an EOS, make sure to FLUSH.
+ */
+ if (APR_BUCKET_IS_EOS(b)) {
+ apr_bucket *flush = apr_bucket_flush_create(f->c->bucket_alloc);
+ APR_BUCKET_INSERT_BEFORE(b, flush);
+ }
+ dumpit(f, b);
+ }
+
+ return ap_pass_brigade(f->next, bb) ;
+}
+
+static int dumpio_pre_conn(conn_rec *c, void *csd)
+{
+ dumpio_conf_t *ptr =
+ (dumpio_conf_t *) ap_get_module_config(c->base_server->module_config,
+ &dumpio_module);
+
+ if (ptr->enable_input)
+ ap_add_input_filter("DUMPIO_IN", NULL, NULL, c);
+ if (ptr->enable_output)
+ ap_add_output_filter("DUMPIO_OUT", NULL, NULL, c);
+ return OK;
+}
+
+static void dumpio_register_hooks(apr_pool_t *p)
+{
+/*
+ * We know that SSL is CONNECTION + 5
+ */
+ ap_register_output_filter("DUMPIO_OUT", dumpio_output_filter,
+ NULL, AP_FTYPE_CONNECTION + 3) ;
+
+ ap_register_input_filter("DUMPIO_IN", dumpio_input_filter,
+ NULL, AP_FTYPE_CONNECTION + 3) ;
+
+ ap_hook_pre_connection(dumpio_pre_conn, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+static void *dumpio_create_sconfig(apr_pool_t *p, server_rec *s)
+{
+ dumpio_conf_t *ptr = apr_pcalloc(p, sizeof *ptr);
+ ptr->enable_input = ptr->enable_output = 0;
+ return ptr;
+}
+
+static const char *dumpio_enable_input(cmd_parms *cmd, void *dummy, int arg)
+{
+ dumpio_conf_t *ptr =
+ (dumpio_conf_t *) ap_get_module_config(cmd->server->module_config,
+ &dumpio_module);
+
+ ptr->enable_input = arg;
+ return NULL;
+}
+
+static const char *dumpio_enable_output(cmd_parms *cmd, void *dummy, int arg)
+{
+ dumpio_conf_t *ptr =
+ (dumpio_conf_t *) ap_get_module_config(cmd->server->module_config,
+ &dumpio_module);
+
+ ptr->enable_output = arg;
+ return NULL;
+}
+
+static const command_rec dumpio_cmds[] = {
+ AP_INIT_FLAG("DumpIOInput", dumpio_enable_input, NULL,
+ RSRC_CONF, "Enable I/O Dump on Input Data"),
+ AP_INIT_FLAG("DumpIOOutput", dumpio_enable_output, NULL,
+ RSRC_CONF, "Enable I/O Dump on Output Data"),
+ { NULL }
+};
+
+module AP_MODULE_DECLARE_DATA dumpio_module = {
+ STANDARD20_MODULE_STUFF,
+ NULL,
+ NULL,
+ dumpio_create_sconfig,
+ NULL,
+ dumpio_cmds,
+ dumpio_register_hooks
+};
Code Review / bottlenecks.git / blobdiff