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Posted to commits@trafficserver.apache.org by zw...@apache.org on 2012/03/01 17:19:43 UTC
[3/6] git commit: Filter out header_filter
Filter out header_filter
Project: http://git-wip-us.apache.org/repos/asf/trafficserver/repo
Commit: http://git-wip-us.apache.org/repos/asf/trafficserver/commit/19921914
Tree: http://git-wip-us.apache.org/repos/asf/trafficserver/tree/19921914
Diff: http://git-wip-us.apache.org/repos/asf/trafficserver/diff/19921914
Branch: refs/heads/master
Commit: 199219146227957b5d8101440c32c755c2a2e727
Parents: b4384dc
Author: Leif Hedstrom <le...@ogre.com>
Authored: Thu Mar 1 09:14:54 2012 -0700
Committer: Leif Hedstrom <le...@ogre.com>
Committed: Thu Mar 1 09:14:54 2012 -0700
----------------------------------------------------------------------
CHANGES | 11 -
LICENSE | 404 ---------------------------
Makefile | 26 --
NOTICE | 5 -
README | 95 -------
STATUS | 21 --
example.conf | 21 --
header_filter.cc | 213 --------------
lulu.h | 108 -------
plugins/header_filter/README | 95 +++++++
plugins/header_filter/example.conf | 21 ++
plugins/header_filter/header_filter.cc | 213 ++++++++++++++
plugins/header_filter/lulu.h | 108 +++++++
plugins/header_filter/rules.cc | 331 ++++++++++++++++++++++
plugins/header_filter/rules.h | 168 +++++++++++
rules.cc | 331 ----------------------
rules.h | 168 -----------
17 files changed, 936 insertions(+), 1403 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/CHANGES
----------------------------------------------------------------------
diff --git a/CHANGES b/CHANGES
deleted file mode 100644
index 511f257..0000000
--- a/CHANGES
+++ /dev/null
@@ -1,11 +0,0 @@
- -*- coding: utf-8 -*-
-
-Changes with Apache Traffic Server header_filter 1.0
-
- *) Added support for the "add" and "set" operators, e.g.
-
- [SEND_REQUEST_HDR]
- Host =www.ogre.com=
- X-Append-Header +Added by ATS+
-
- *) This is a basic plugin for doing header_filtering.
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/LICENSE
----------------------------------------------------------------------
diff --git a/LICENSE b/LICENSE
deleted file mode 100644
index bed90de..0000000
--- a/LICENSE
+++ /dev/null
@@ -1,404 +0,0 @@
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http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/Makefile
----------------------------------------------------------------------
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 7cb1a3b..0000000
--- a/Makefile
+++ /dev/null
@@ -1,26 +0,0 @@
-# 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.
-
-TSXS?=tsxs
-
-all: header_filter.cc rules.cc
- $(TSXS) -v -C $? -o header_filter.so
-
-install:
- $(TSXS) -i -o header_filter.so
-
-clean:
- rm -f *.lo *.so
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/NOTICE
----------------------------------------------------------------------
diff --git a/NOTICE b/NOTICE
deleted file mode 100644
index 5282dde..0000000
--- a/NOTICE
+++ /dev/null
@@ -1,5 +0,0 @@
-Apache Traffic Server
-Copyright 2011 The Apache Software Foundation
-
-This product includes software developed at
-The Apache Software Foundation (http://www.apache.org/).
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/README
----------------------------------------------------------------------
diff --git a/README b/README
deleted file mode 100644
index f10a9ac..0000000
--- a/README
+++ /dev/null
@@ -1,95 +0,0 @@
-Apache Traffic Server Header Filter plugin
-==========================================
-
-This is a simple plugin for filtering out headers from requests (or
-responses). Typical configuration is done either with a global
-configuration, in .../etc/trafficserver/plugin.config:
-
- header_filter.so /usr/local/etc/hdr_filters.conf
-
-
-Or, alternatively, in a per-remap rule configuration
-
- map http://a.com/ http://b.com @plugin=header_filter.so @pparam=hdr_filters.conf
-
-
-Even if you don't have a global configuration, if your remap rules
-schedules actions in hooks other than during remap, you must also add the
-header_filter.so to the plugin.config (see above), but without args:
-
- header_filter.so
-
-
-The configuration files looks like
-
-[READ_REQUEST_HDR]
- X-From-Someone
- Cookie
-
-[READ_RESPONSE_HDR]
- X-From-Server
- Set-Cookie
-
-[SEND_RESPONSE_HDR]
- X-Fie "Test" # Match the entire string
- X-Foo /Test/ # Match the (Perl) regex
- X-Bar [Test* # Match the prefix string
- X-Fum *Test] # Match the postfix string
-
-
-Comments are prefixed with #, and in most cases, the regular expression
-matching is the best choice (very little overhead). The pattern matches
-can also take an option '!' to reverse the test. The default action is
-to delete all headers that do (not) match the pattern. E.g.
-
-[SEND_REQUEST_HDR]
- X-Fie /test/
- X-Foo ! /test/i
-
-
-The final "i" qualifier (works on all pattern matches) forces the match or
-comparison to be made case insensitive (just like in Perl).
-
-
-It's also possible to replace or add headers, using the = and +
-operators. For example
-
-[SEND_REQUEST_HDR]
- Host =www.example.com=
- X-Foo +ATS+
-
-
-This will force the Host: header to have exactly one value,
-www.example.com, while X-Foo will have at least one header with the value
-ATS, but there could be more instances of the header from the existing
-header in the request.
-
-
-Possible hooks are
-
- READ_REQUEST_HDR
- SEND_REQUEST_HDR
- READ_RESPONSE_HDR
- SEND_RESPONSE_HDR
-
-
-If not specified, the default hook to add the rules (headers to filter) is
-READ_REQUEST_HDR. It's completely acceptable (and useful) to configure a
-remap rule to delete headers in a later hook (e.g. when reading a response
-from the server). This is what actually makes the plugin even remotely
-useful.
-
-
-
-BUILDING
-========
-
-A simple
-
- % make
- % make install
-
-
-should do it, assuming that you have the tsxs script in your search
-path. This script is installed with your installation of Apache Traffic
-Server.
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/STATUS
----------------------------------------------------------------------
diff --git a/STATUS b/STATUS
deleted file mode 100644
index e6f3c71..0000000
--- a/STATUS
+++ /dev/null
@@ -1,21 +0,0 @@
-Traffic Server Header Filter 1.0 STATUS: -*-text-*-
-Last modified at [$Date: 2010-09-23 10:18:00 -0600 (Thu, 23 Sep 2010) $]
-
-The current version of this file can be found at:
-
- * https://svn.apache.org/repos/asf/trafficserver/plugins/header_filter/STATUS
-
-
-Release history:
- 1.0.0 : Released June 27th, 2011
-
-
-Contributors looking for a mission:
-
- * Just do an egrep on "TODO" or "XXX" in the source.
-
- * Review the bug database at: https://issues.apache.org/jira/browse/TS
-
- - Download, test and review patches attached to open bugs
-
- * Open bugs in the bug database.
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/example.conf
----------------------------------------------------------------------
diff --git a/example.conf b/example.conf
deleted file mode 100644
index 8914b9e..0000000
--- a/example.conf
+++ /dev/null
@@ -1,21 +0,0 @@
-#
-# This following will:
-# - nuke the cookie headers (all of them)
-# - Replace the Host: header with www.ogre.com
-# - Add a header X-Append-Header: Added by ATS
-#
-[READ_RESPONSE_HDR]
- Set-Cookie
- Expires
- Vary /user-agent/i
- X-Foo ! "test"
-
-
-#
-# There can only ever be one Host: header (the plugin assures that since we use the set-operator)
-# but there can be more than one X-Append-Header (since we use the add-operator).
-#
-[SEND_REQUEST_HDR]
- Cookie
- Host =www.ogre.com=
- X-Append-Header +Added by ATS+
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/header_filter.cc
----------------------------------------------------------------------
diff --git a/header_filter.cc b/header_filter.cc
deleted file mode 100644
index 48425d1..0000000
--- a/header_filter.cc
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- 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.
-*/
-
-
-//////////////////////////////////////////////////////////////////////////////////////////////
-//
-// Main entry points for the plugin hooks etc.
-//
-#include <ts/ts.h>
-#include <ts/remap.h>
-#include <stdio.h>
-
-#include "rules.h"
-
-using namespace ::HeaderFilter;
-
-// Global plugin rules
-Rules global;
-int arg_idx;
-
-// TODO: Maybe we should use wrappers for TSmalloc() for pcre_malloc (and _free),
-// but since we only compile at config time, it's really not that important.
-
-
-///////////////////////////////////////////////////////////////////////////////
-// Continuation
-//
-static int
-cont_header_filter(TSCont contp, TSEvent event, void *edata)
-{
- TSHttpTxn txnp = (TSHttpTxn) edata;
- TSHttpHookID hook = TS_HTTP_LAST_HOOK;
- TSMBuffer reqp;
- TSMLoc hdr_loc;
-
- // Get the resources necessary to process this event
- switch (event) {
- case TS_EVENT_HTTP_READ_REQUEST_HDR:
- if (TS_SUCCESS == TSHttpTxnClientReqGet(txnp, &reqp, &hdr_loc))
- hook = TS_HTTP_READ_REQUEST_HDR_HOOK;
- break;
- case TS_EVENT_HTTP_SEND_REQUEST_HDR:
- if (TS_SUCCESS == TSHttpTxnServerReqGet(txnp, &reqp, &hdr_loc))
- hook = TS_HTTP_SEND_REQUEST_HDR_HOOK;
- break;
- case TS_EVENT_HTTP_READ_RESPONSE_HDR:
- if (TS_SUCCESS == TSHttpTxnServerRespGet(txnp, &reqp, &hdr_loc))
- hook = TS_HTTP_READ_RESPONSE_HDR_HOOK;
- break;
- case TS_EVENT_HTTP_SEND_RESPONSE_HDR:
- if (TS_SUCCESS == TSHttpTxnClientRespGet(txnp, &reqp, &hdr_loc))
- hook = TS_HTTP_SEND_RESPONSE_HDR_HOOK;
- break;
- default:
- TSError("header_filter: unknown event for this plugin");
- TSDebug(PLUGIN_NAME, "unknown event for this plugin");
- break;
- }
-
- if (hook != TS_HTTP_LAST_HOOK) {
- Rules* from_remap;
-
- global.execute(reqp, hdr_loc, hook);
-
- if (TS_HTTP_READ_REQUEST_HDR_HOOK != hook) { // Don't run the hook handled by remap plugin
- if ((from_remap = (Rules*)TSHttpTxnArgGet(txnp, arg_idx))) {
- from_remap->execute(reqp, hdr_loc, hook);
- }
- }
- TSHandleMLocRelease(reqp, TS_NULL_MLOC, hdr_loc);
- }
-
- TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
- return 0;
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-// Initialize the InkAPI plugin for the global hooks we support.
-//
-void
-TSPluginInit(int argc, const char *argv[])
-{
- TSPluginRegistrationInfo info;
-
- info.plugin_name = const_cast<char*>(PLUGIN_NAME);
- info.vendor_name = const_cast<char*>("Apache");
- info.support_email = const_cast<char*>("users@trafficserver.apache.org");
-
- if (!TSPluginRegister(TS_SDK_VERSION_3_0 , &info)) {
- TSError("header_filter: plugin registration failed.\n");
- }
-
- // Parse the rules file
- if ((argc > 1)) {
- if (!global.parse_file(argv[1]))
- TSError("header_filter: failed to parse configuration file");
- }
-
- TSCont cont = TSContCreate(cont_header_filter, NULL);
-
- for (int i=TS_HTTP_READ_REQUEST_HDR_HOOK; i < TS_HTTP_LAST_HOOK; ++i) {
- if (global.supported_hook(static_cast<TSHttpHookID>(i))) {
- TSDebug(PLUGIN_NAME, "Registering hook %d", i);
- TSHttpHookAdd(static_cast<TSHttpHookID>(i), cont);
- }
- }
- if (TSHttpArgIndexReserve(PLUGIN_NAME, "Filter out headers in various hooks", &arg_idx) != TS_SUCCESS) {
- TSError("header_filter: failed to reserve private data slot");
- }
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-// Initialize the plugin as a remap plugin.
-//
-TSReturnCode
-TSRemapInit(TSRemapInterface* api_info, char *errbuf, int errbuf_size)
-{
- if (!api_info) {
- strncpy(errbuf, "[tsremap_init] - Invalid TSRemapInterface argument", errbuf_size - 1);
- return TS_ERROR;
- }
-
- if (api_info->size < sizeof(TSRemapInterface)) {
- strncpy(errbuf, "[tsremap_init] - Incorrect size of TSRemapInterface structure", errbuf_size - 1);
- return TS_ERROR;
- }
-
- if (api_info->tsremap_version < TSREMAP_VERSION) {
- snprintf(errbuf, errbuf_size - 1, "[tsremap_init] - Incorrect API version %ld.%ld",
- api_info->tsremap_version >> 16, (api_info->tsremap_version & 0xffff));
- return TS_ERROR;
- }
-
- TSDebug(PLUGIN_NAME, "remap plugin is succesfully initialized");
- return TS_SUCCESS; /* success */
-}
-
-
-TSReturnCode
-TSRemapNewInstance(int argc, char* argv[], void** ih, char* errbuf, int errbuf_size)
-{
- if (argc < 3) {
- TSError("Unable to create remap instance, need rules file");
- return TS_ERROR;
- } else {
- Rules* conf = new(Rules);
-
- conf->parse_file(argv[2]);
- *ih = static_cast<void*>(conf);
- }
-
- return TS_SUCCESS;
-}
-
-void
-TSRemapDeleteInstance(void* ih)
-{
- Rules* conf = static_cast<Rules*>(ih);
-
- delete conf;
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-// Main entry point when used as a remap plugin.
-//
-TSRemapStatus
-TSRemapDoRemap(void* ih, TSHttpTxn rh, TSRemapRequestInfo *rri)
-{
- if (NULL == ih) {
- TSDebug(PLUGIN_NAME, "No Rules configured, falling back to default mapping rule");
- } else {
- Rules* confp = static_cast<Rules*>(ih);
-
- TSHttpTxnArgSet(rh, arg_idx, static_cast<void*>(ih)); // Save for later hooks
- confp->execute(rri->requestBufp, rri->requestHdrp, TS_HTTP_READ_REQUEST_HDR_HOOK);
- }
-
- return TSREMAP_NO_REMAP;
-}
-
-
-/*
- local variables:
- mode: C++
- indent-tabs-mode: nil
- c-basic-offset: 2
- c-comment-only-line-offset: 0
- c-file-offsets: ((statement-block-intro . +)
- (label . 0)
- (statement-cont . +)
- (innamespace . 0))
- end:
-
- Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
-*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/lulu.h
----------------------------------------------------------------------
diff --git a/lulu.h b/lulu.h
deleted file mode 100644
index 47b08d0..0000000
--- a/lulu.h
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- 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.
-*/
-
-
-//////////////////////////////////////////////////////////////////////////////////////////////
-//
-// Implement the classes for the various types of hash keys we support.
-//
-#ifndef __LULU_H__
-#define __LULU_H__ 1
-
-// Define UNUSED properly.
-#if ((__GNUC__ >= 3) || ((__GNUC__ == 2) && (__GNUC_MINOR__ >= 7)))
-#define UNUSED __attribute__ ((unused))
-#else
-#define UNUSED
-#endif /* #if ((__GNUC__ >= 3) || ((__GNUC__ == 2) && (__GNUC_MINOR__ >= 7))) */
-
-#include <sys/types.h>
-
-// Memory barriers on i386 / linux / gcc
-#if defined(__i386__)
-#define mb() __asm__ __volatile__ ( "lock; addl $0,0(%%esp)" : : : "memory" )
-#define rmb() __asm__ __volatile__ ( "lock; addl $0,0(%%esp)" : : : "memory" )
-#define wmb() __asm__ __volatile__ ( "" : : : "memory")
-#elif defined(__x86_64__)
-#define mb() __asm__ __volatile__ ( "mfence" : : : "memory")
-#define rmb() __asm__ __volatile__ ( "lfence" : : : "memory")
-#define wmb() __asm__ __volatile__ ( "" : : : "memory")
-#else
-#error "Define barriers"
-#endif
-
-// Used for Debug etc.
-static const char* PLUGIN_NAME = "header_filter";
-static const char* PLUGIN_NAME_DBG = "header_filter_dbg";
-
-
-// From the atomic portions of ATS
-typedef int int32;
-typedef unsigned int intu32;
-typedef long long int64;
-typedef unsigned long long intu64;
-
-typedef volatile int32 vint32;
-typedef volatile int64 vint64;
-typedef volatile void *vvoidp;
-typedef vint32 *pvint32;
-typedef vint64 *pvint64;
-typedef vvoidp *pvvoidp;
-
-#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 1)
-
-/* see http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html */
-static inline int32 ink_atomic_swap(pvint32 mem, int32 value) { return __sync_lock_test_and_set(mem, value); }
-static inline int64 ink_atomic_swap64(pvint64 mem, int64 value) { return __sync_lock_test_and_set(mem, value); }
-static inline void *ink_atomic_swap_ptr(vvoidp mem, void *value) { return __sync_lock_test_and_set((void**)mem, value); }
-static inline int ink_atomic_cas(pvint32 mem, int old, int new_value) { return __sync_bool_compare_and_swap(mem, old, new_value); }
-static inline int64 ink_atomic_cas64(pvint64 mem, int64 old, int64 new_value) { return __sync_bool_compare_and_swap(mem, old, new_value); }
-static inline int ink_atomic_cas_ptr(pvvoidp mem, void* old, void* new_value) { return __sync_bool_compare_and_swap(mem, old, new_value); }
-static inline int ink_atomic_increment(pvint32 mem, int value) { return __sync_fetch_and_add(mem, value); }
-static inline int64 ink_atomic_increment64(pvint64 mem, int64 value) { return __sync_fetch_and_add(mem, value); }
-static inline void *ink_atomic_increment_ptr(pvvoidp mem, intptr_t value) { return __sync_fetch_and_add((void**)mem, value); }
-#else
-// TODO: Deal with this case?
-#failure
-#endif
-
-
-// From google styleguide: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml
-#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
- TypeName(const TypeName&); \
- void operator=(const TypeName&)
-
-
-#endif // __LULU_H__
-
-
-
-/*
- local variables:
- mode: C++
- indent-tabs-mode: nil
- c-basic-offset: 2
- c-comment-only-line-offset: 0
- c-file-offsets: ((statement-block-intro . +)
- (label . 0)
- (statement-cont . +)
- (innamespace . 0))
- end:
-
- Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
-*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/plugins/header_filter/README
----------------------------------------------------------------------
diff --git a/plugins/header_filter/README b/plugins/header_filter/README
new file mode 100644
index 0000000..f10a9ac
--- /dev/null
+++ b/plugins/header_filter/README
@@ -0,0 +1,95 @@
+Apache Traffic Server Header Filter plugin
+==========================================
+
+This is a simple plugin for filtering out headers from requests (or
+responses). Typical configuration is done either with a global
+configuration, in .../etc/trafficserver/plugin.config:
+
+ header_filter.so /usr/local/etc/hdr_filters.conf
+
+
+Or, alternatively, in a per-remap rule configuration
+
+ map http://a.com/ http://b.com @plugin=header_filter.so @pparam=hdr_filters.conf
+
+
+Even if you don't have a global configuration, if your remap rules
+schedules actions in hooks other than during remap, you must also add the
+header_filter.so to the plugin.config (see above), but without args:
+
+ header_filter.so
+
+
+The configuration files looks like
+
+[READ_REQUEST_HDR]
+ X-From-Someone
+ Cookie
+
+[READ_RESPONSE_HDR]
+ X-From-Server
+ Set-Cookie
+
+[SEND_RESPONSE_HDR]
+ X-Fie "Test" # Match the entire string
+ X-Foo /Test/ # Match the (Perl) regex
+ X-Bar [Test* # Match the prefix string
+ X-Fum *Test] # Match the postfix string
+
+
+Comments are prefixed with #, and in most cases, the regular expression
+matching is the best choice (very little overhead). The pattern matches
+can also take an option '!' to reverse the test. The default action is
+to delete all headers that do (not) match the pattern. E.g.
+
+[SEND_REQUEST_HDR]
+ X-Fie /test/
+ X-Foo ! /test/i
+
+
+The final "i" qualifier (works on all pattern matches) forces the match or
+comparison to be made case insensitive (just like in Perl).
+
+
+It's also possible to replace or add headers, using the = and +
+operators. For example
+
+[SEND_REQUEST_HDR]
+ Host =www.example.com=
+ X-Foo +ATS+
+
+
+This will force the Host: header to have exactly one value,
+www.example.com, while X-Foo will have at least one header with the value
+ATS, but there could be more instances of the header from the existing
+header in the request.
+
+
+Possible hooks are
+
+ READ_REQUEST_HDR
+ SEND_REQUEST_HDR
+ READ_RESPONSE_HDR
+ SEND_RESPONSE_HDR
+
+
+If not specified, the default hook to add the rules (headers to filter) is
+READ_REQUEST_HDR. It's completely acceptable (and useful) to configure a
+remap rule to delete headers in a later hook (e.g. when reading a response
+from the server). This is what actually makes the plugin even remotely
+useful.
+
+
+
+BUILDING
+========
+
+A simple
+
+ % make
+ % make install
+
+
+should do it, assuming that you have the tsxs script in your search
+path. This script is installed with your installation of Apache Traffic
+Server.
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/plugins/header_filter/example.conf
----------------------------------------------------------------------
diff --git a/plugins/header_filter/example.conf b/plugins/header_filter/example.conf
new file mode 100644
index 0000000..8914b9e
--- /dev/null
+++ b/plugins/header_filter/example.conf
@@ -0,0 +1,21 @@
+#
+# This following will:
+# - nuke the cookie headers (all of them)
+# - Replace the Host: header with www.ogre.com
+# - Add a header X-Append-Header: Added by ATS
+#
+[READ_RESPONSE_HDR]
+ Set-Cookie
+ Expires
+ Vary /user-agent/i
+ X-Foo ! "test"
+
+
+#
+# There can only ever be one Host: header (the plugin assures that since we use the set-operator)
+# but there can be more than one X-Append-Header (since we use the add-operator).
+#
+[SEND_REQUEST_HDR]
+ Cookie
+ Host =www.ogre.com=
+ X-Append-Header +Added by ATS+
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/plugins/header_filter/header_filter.cc
----------------------------------------------------------------------
diff --git a/plugins/header_filter/header_filter.cc b/plugins/header_filter/header_filter.cc
new file mode 100644
index 0000000..48425d1
--- /dev/null
+++ b/plugins/header_filter/header_filter.cc
@@ -0,0 +1,213 @@
+/*
+ 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.
+*/
+
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//
+// Main entry points for the plugin hooks etc.
+//
+#include <ts/ts.h>
+#include <ts/remap.h>
+#include <stdio.h>
+
+#include "rules.h"
+
+using namespace ::HeaderFilter;
+
+// Global plugin rules
+Rules global;
+int arg_idx;
+
+// TODO: Maybe we should use wrappers for TSmalloc() for pcre_malloc (and _free),
+// but since we only compile at config time, it's really not that important.
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Continuation
+//
+static int
+cont_header_filter(TSCont contp, TSEvent event, void *edata)
+{
+ TSHttpTxn txnp = (TSHttpTxn) edata;
+ TSHttpHookID hook = TS_HTTP_LAST_HOOK;
+ TSMBuffer reqp;
+ TSMLoc hdr_loc;
+
+ // Get the resources necessary to process this event
+ switch (event) {
+ case TS_EVENT_HTTP_READ_REQUEST_HDR:
+ if (TS_SUCCESS == TSHttpTxnClientReqGet(txnp, &reqp, &hdr_loc))
+ hook = TS_HTTP_READ_REQUEST_HDR_HOOK;
+ break;
+ case TS_EVENT_HTTP_SEND_REQUEST_HDR:
+ if (TS_SUCCESS == TSHttpTxnServerReqGet(txnp, &reqp, &hdr_loc))
+ hook = TS_HTTP_SEND_REQUEST_HDR_HOOK;
+ break;
+ case TS_EVENT_HTTP_READ_RESPONSE_HDR:
+ if (TS_SUCCESS == TSHttpTxnServerRespGet(txnp, &reqp, &hdr_loc))
+ hook = TS_HTTP_READ_RESPONSE_HDR_HOOK;
+ break;
+ case TS_EVENT_HTTP_SEND_RESPONSE_HDR:
+ if (TS_SUCCESS == TSHttpTxnClientRespGet(txnp, &reqp, &hdr_loc))
+ hook = TS_HTTP_SEND_RESPONSE_HDR_HOOK;
+ break;
+ default:
+ TSError("header_filter: unknown event for this plugin");
+ TSDebug(PLUGIN_NAME, "unknown event for this plugin");
+ break;
+ }
+
+ if (hook != TS_HTTP_LAST_HOOK) {
+ Rules* from_remap;
+
+ global.execute(reqp, hdr_loc, hook);
+
+ if (TS_HTTP_READ_REQUEST_HDR_HOOK != hook) { // Don't run the hook handled by remap plugin
+ if ((from_remap = (Rules*)TSHttpTxnArgGet(txnp, arg_idx))) {
+ from_remap->execute(reqp, hdr_loc, hook);
+ }
+ }
+ TSHandleMLocRelease(reqp, TS_NULL_MLOC, hdr_loc);
+ }
+
+ TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
+ return 0;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Initialize the InkAPI plugin for the global hooks we support.
+//
+void
+TSPluginInit(int argc, const char *argv[])
+{
+ TSPluginRegistrationInfo info;
+
+ info.plugin_name = const_cast<char*>(PLUGIN_NAME);
+ info.vendor_name = const_cast<char*>("Apache");
+ info.support_email = const_cast<char*>("users@trafficserver.apache.org");
+
+ if (!TSPluginRegister(TS_SDK_VERSION_3_0 , &info)) {
+ TSError("header_filter: plugin registration failed.\n");
+ }
+
+ // Parse the rules file
+ if ((argc > 1)) {
+ if (!global.parse_file(argv[1]))
+ TSError("header_filter: failed to parse configuration file");
+ }
+
+ TSCont cont = TSContCreate(cont_header_filter, NULL);
+
+ for (int i=TS_HTTP_READ_REQUEST_HDR_HOOK; i < TS_HTTP_LAST_HOOK; ++i) {
+ if (global.supported_hook(static_cast<TSHttpHookID>(i))) {
+ TSDebug(PLUGIN_NAME, "Registering hook %d", i);
+ TSHttpHookAdd(static_cast<TSHttpHookID>(i), cont);
+ }
+ }
+ if (TSHttpArgIndexReserve(PLUGIN_NAME, "Filter out headers in various hooks", &arg_idx) != TS_SUCCESS) {
+ TSError("header_filter: failed to reserve private data slot");
+ }
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Initialize the plugin as a remap plugin.
+//
+TSReturnCode
+TSRemapInit(TSRemapInterface* api_info, char *errbuf, int errbuf_size)
+{
+ if (!api_info) {
+ strncpy(errbuf, "[tsremap_init] - Invalid TSRemapInterface argument", errbuf_size - 1);
+ return TS_ERROR;
+ }
+
+ if (api_info->size < sizeof(TSRemapInterface)) {
+ strncpy(errbuf, "[tsremap_init] - Incorrect size of TSRemapInterface structure", errbuf_size - 1);
+ return TS_ERROR;
+ }
+
+ if (api_info->tsremap_version < TSREMAP_VERSION) {
+ snprintf(errbuf, errbuf_size - 1, "[tsremap_init] - Incorrect API version %ld.%ld",
+ api_info->tsremap_version >> 16, (api_info->tsremap_version & 0xffff));
+ return TS_ERROR;
+ }
+
+ TSDebug(PLUGIN_NAME, "remap plugin is succesfully initialized");
+ return TS_SUCCESS; /* success */
+}
+
+
+TSReturnCode
+TSRemapNewInstance(int argc, char* argv[], void** ih, char* errbuf, int errbuf_size)
+{
+ if (argc < 3) {
+ TSError("Unable to create remap instance, need rules file");
+ return TS_ERROR;
+ } else {
+ Rules* conf = new(Rules);
+
+ conf->parse_file(argv[2]);
+ *ih = static_cast<void*>(conf);
+ }
+
+ return TS_SUCCESS;
+}
+
+void
+TSRemapDeleteInstance(void* ih)
+{
+ Rules* conf = static_cast<Rules*>(ih);
+
+ delete conf;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Main entry point when used as a remap plugin.
+//
+TSRemapStatus
+TSRemapDoRemap(void* ih, TSHttpTxn rh, TSRemapRequestInfo *rri)
+{
+ if (NULL == ih) {
+ TSDebug(PLUGIN_NAME, "No Rules configured, falling back to default mapping rule");
+ } else {
+ Rules* confp = static_cast<Rules*>(ih);
+
+ TSHttpTxnArgSet(rh, arg_idx, static_cast<void*>(ih)); // Save for later hooks
+ confp->execute(rri->requestBufp, rri->requestHdrp, TS_HTTP_READ_REQUEST_HDR_HOOK);
+ }
+
+ return TSREMAP_NO_REMAP;
+}
+
+
+/*
+ local variables:
+ mode: C++
+ indent-tabs-mode: nil
+ c-basic-offset: 2
+ c-comment-only-line-offset: 0
+ c-file-offsets: ((statement-block-intro . +)
+ (label . 0)
+ (statement-cont . +)
+ (innamespace . 0))
+ end:
+
+ Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
+*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/plugins/header_filter/lulu.h
----------------------------------------------------------------------
diff --git a/plugins/header_filter/lulu.h b/plugins/header_filter/lulu.h
new file mode 100644
index 0000000..47b08d0
--- /dev/null
+++ b/plugins/header_filter/lulu.h
@@ -0,0 +1,108 @@
+/*
+ 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.
+*/
+
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//
+// Implement the classes for the various types of hash keys we support.
+//
+#ifndef __LULU_H__
+#define __LULU_H__ 1
+
+// Define UNUSED properly.
+#if ((__GNUC__ >= 3) || ((__GNUC__ == 2) && (__GNUC_MINOR__ >= 7)))
+#define UNUSED __attribute__ ((unused))
+#else
+#define UNUSED
+#endif /* #if ((__GNUC__ >= 3) || ((__GNUC__ == 2) && (__GNUC_MINOR__ >= 7))) */
+
+#include <sys/types.h>
+
+// Memory barriers on i386 / linux / gcc
+#if defined(__i386__)
+#define mb() __asm__ __volatile__ ( "lock; addl $0,0(%%esp)" : : : "memory" )
+#define rmb() __asm__ __volatile__ ( "lock; addl $0,0(%%esp)" : : : "memory" )
+#define wmb() __asm__ __volatile__ ( "" : : : "memory")
+#elif defined(__x86_64__)
+#define mb() __asm__ __volatile__ ( "mfence" : : : "memory")
+#define rmb() __asm__ __volatile__ ( "lfence" : : : "memory")
+#define wmb() __asm__ __volatile__ ( "" : : : "memory")
+#else
+#error "Define barriers"
+#endif
+
+// Used for Debug etc.
+static const char* PLUGIN_NAME = "header_filter";
+static const char* PLUGIN_NAME_DBG = "header_filter_dbg";
+
+
+// From the atomic portions of ATS
+typedef int int32;
+typedef unsigned int intu32;
+typedef long long int64;
+typedef unsigned long long intu64;
+
+typedef volatile int32 vint32;
+typedef volatile int64 vint64;
+typedef volatile void *vvoidp;
+typedef vint32 *pvint32;
+typedef vint64 *pvint64;
+typedef vvoidp *pvvoidp;
+
+#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 1)
+
+/* see http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html */
+static inline int32 ink_atomic_swap(pvint32 mem, int32 value) { return __sync_lock_test_and_set(mem, value); }
+static inline int64 ink_atomic_swap64(pvint64 mem, int64 value) { return __sync_lock_test_and_set(mem, value); }
+static inline void *ink_atomic_swap_ptr(vvoidp mem, void *value) { return __sync_lock_test_and_set((void**)mem, value); }
+static inline int ink_atomic_cas(pvint32 mem, int old, int new_value) { return __sync_bool_compare_and_swap(mem, old, new_value); }
+static inline int64 ink_atomic_cas64(pvint64 mem, int64 old, int64 new_value) { return __sync_bool_compare_and_swap(mem, old, new_value); }
+static inline int ink_atomic_cas_ptr(pvvoidp mem, void* old, void* new_value) { return __sync_bool_compare_and_swap(mem, old, new_value); }
+static inline int ink_atomic_increment(pvint32 mem, int value) { return __sync_fetch_and_add(mem, value); }
+static inline int64 ink_atomic_increment64(pvint64 mem, int64 value) { return __sync_fetch_and_add(mem, value); }
+static inline void *ink_atomic_increment_ptr(pvvoidp mem, intptr_t value) { return __sync_fetch_and_add((void**)mem, value); }
+#else
+// TODO: Deal with this case?
+#failure
+#endif
+
+
+// From google styleguide: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml
+#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
+ TypeName(const TypeName&); \
+ void operator=(const TypeName&)
+
+
+#endif // __LULU_H__
+
+
+
+/*
+ local variables:
+ mode: C++
+ indent-tabs-mode: nil
+ c-basic-offset: 2
+ c-comment-only-line-offset: 0
+ c-file-offsets: ((statement-block-intro . +)
+ (label . 0)
+ (statement-cont . +)
+ (innamespace . 0))
+ end:
+
+ Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
+*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/plugins/header_filter/rules.cc
----------------------------------------------------------------------
diff --git a/plugins/header_filter/rules.cc b/plugins/header_filter/rules.cc
new file mode 100644
index 0000000..41b0014
--- /dev/null
+++ b/plugins/header_filter/rules.cc
@@ -0,0 +1,331 @@
+/*
+ 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.
+*/
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//
+// Implemenation details for the rules class.
+//
+#include <fstream>
+#include <ts/ts.h>
+
+#include "rules.h"
+
+namespace HeaderFilter {
+
+const char* QUAL_DELIMITERS = "!/\"*[+=";
+
+
+// RulesEntry implementations
+void
+RulesEntry::append(RulesEntry* entry)
+{
+ RulesEntry* n = this;
+
+ while (NULL != n->_next)
+ n = n->_next;
+ n->_next = entry;
+}
+
+inline void
+add_header(TSMBuffer& reqp, TSMLoc& hdr_loc, const char* hdr, int hdr_len, const char* val, int val_len)
+{
+ if (val_len <= 0) {
+ TSDebug(PLUGIN_NAME, "\tWould set header %s to an empty value, skipping", hdr);
+ } else {
+ TSMLoc new_field;
+
+ if (TS_SUCCESS == TSMimeHdrFieldCreateNamed(reqp, hdr_loc, hdr, hdr_len, &new_field)) {
+ if (TS_SUCCESS == TSMimeHdrFieldValueStringInsert(reqp, hdr_loc, new_field, -1, val, val_len))
+ if (TS_SUCCESS == TSMimeHdrFieldAppend(reqp, hdr_loc, new_field))
+ TSDebug(PLUGIN_NAME, "\tAdded header %s: %s", hdr, val);
+ TSHandleMLocRelease(reqp, hdr_loc, new_field);
+ }
+ }
+}
+
+void
+RulesEntry::execute(TSMBuffer& reqp, TSMLoc& hdr_loc) const
+{
+ if (_q_type == QUAL_ADD) {
+ add_header(reqp, hdr_loc, _header, _h_len, _qualifier, _q_len);
+ } else {
+ TSMLoc field = TSMimeHdrFieldFind(reqp, hdr_loc, _header, _h_len);
+ bool first_set = true;
+
+ while (field) {
+ TSMLoc tmp;
+ int val_len = 0;
+ const char* val = NULL;
+ bool nuke = false;
+
+ if (_q_type != QUAL_NONE)
+ val = TSMimeHdrFieldValueStringGet(reqp, hdr_loc, field, 0, &val_len);
+
+ switch (_q_type) {
+ case QUAL_NONE:
+ nuke = true;
+ break;
+ case QUAL_REGEX:
+ if (val_len > 0) {
+ nuke = pcre_exec(_rex, // the compiled pattern
+ _extra, // Extra data from study (maybe)
+ val, // the subject string
+ val_len, // the length of the subject
+ 0, // start at offset 0 in the subject
+ 0, // default options
+ NULL, // no output vector for substring information
+ 0) >= 0;
+ }
+ break;
+
+ case QUAL_STRING:
+ if (static_cast<size_t>(val_len) == _q_len) {
+ if (_options & PCRE_CASELESS) {
+ nuke = !strncasecmp(_qualifier, val, val_len);
+ } else {
+ nuke = !memcmp(_qualifier, val, val_len);
+ }
+ }
+ break;
+
+ case QUAL_PREFIX:
+ if (static_cast<size_t>(val_len) >= _q_len) {
+ if (_options & PCRE_CASELESS) {
+ nuke = !strncasecmp(_qualifier, val, _q_len);
+ } else {
+ nuke = !memcmp(_qualifier, val, _q_len);
+ }
+ }
+ break;
+
+ case QUAL_POSTFIX:
+ if (static_cast<size_t>(val_len) >= _q_len) {
+ if (_options & PCRE_CASELESS) {
+ nuke = !strncasecmp(_qualifier, val + val_len - _q_len, _q_len);
+ } else {
+ nuke = !memcmp(_qualifier, val + val_len - _q_len, _q_len);
+ }
+ }
+ break;
+ case QUAL_SET:
+ if (first_set) {
+ nuke = false;
+ first_set = false;
+ if (TS_SUCCESS == TSMimeHdrFieldValueStringSet(reqp, hdr_loc, field, -1, _qualifier, _q_len))
+ TSDebug(PLUGIN_NAME, "\tSet header: %s: %s", _header, _qualifier);
+ } else {
+ // Nuke all other "duplicates" of this header
+ nuke = true;
+ }
+
+ default:
+ break;
+ }
+
+ tmp = TSMimeHdrFieldNextDup(reqp, hdr_loc, field);
+ if (_inverse)
+ nuke = !nuke;
+ if (nuke) {
+ if (TS_SUCCESS == TSMimeHdrFieldDestroy(reqp, hdr_loc, field))
+ TSDebug(PLUGIN_NAME, "\tDeleting header %.*s", static_cast<int>(_h_len), _header);
+ }
+ TSHandleMLocRelease(reqp, hdr_loc, field);
+ field = tmp;
+ }
+ }
+}
+
+
+// Rules class implementations
+Rules::~Rules()
+{
+ TSDebug(PLUGIN_NAME_DBG, "Calling DTOR for Rules");
+
+ for (int i = 0; i < TS_HTTP_LAST_HOOK; ++i)
+ delete _entries[i];
+}
+
+RulesEntry*
+Rules::add_entry(const TSHttpHookID hook, const std::string& s, const std::string& q, QualifierTypes type, bool inverse, int options)
+{
+ RulesEntry* e = new(RulesEntry)(s, q, type, inverse, options);
+
+ TSAssert(supported_hook(hook));
+ if (NULL == _entries[hook]) {
+ _entries[hook] = e;
+ } else {
+ _entries[hook]->append(e);
+ }
+
+ return e;
+}
+
+bool
+Rules::parse_file(const char* filename)
+{
+ std::ifstream f;
+ TSHttpHookID hook = TS_HTTP_READ_REQUEST_HDR_HOOK;
+ int lineno = 0;
+
+ // TODO: Should we support "glob" here, to specify more than one filename?
+ // TODO: Should we support a 'default' prefix here for the rules?
+ f.open(filename, std::ios::in);
+ if (!f.is_open()) {
+ TSError("unable to open %s", filename);
+ return false;
+ }
+ TSDebug(PLUGIN_NAME, "Parsing config file %s", filename);
+ while (!f.eof()) {
+ bool inverse = false;
+ int options = 0;
+ QualifierTypes type = QUAL_NONE;
+ std::string line, word, qualifier;
+ std::string::size_type pos1, pos2;
+
+ getline(f, line);
+ ++lineno;
+ if (line.empty())
+ continue;
+
+ pos1 = line.find_first_not_of(" \t\n");
+ if (pos1 != std::string::npos) {
+ if (line[pos1] == '#') {
+ continue; // Skip comments
+ } else {
+ pos2 = line.find_first_of("# \t\n", pos1+1); // end of word
+ if (pos2 == std::string::npos) {
+ word = line.substr(pos1);
+ pos1 = pos2;
+ } else {
+ word = line.substr(pos1, pos2-pos1);
+ pos1 = line.find_first_of(QUAL_DELIMITERS, pos2+1);
+ }
+
+ if (word == "[READ_REQUEST_HDR]") {
+ hook = TS_HTTP_READ_REQUEST_HDR_HOOK;
+ } else if (word == "[SEND_REQUEST_HDR]") {
+ hook = TS_HTTP_SEND_REQUEST_HDR_HOOK;
+ } else if (word == "[READ_RESPONSE_HDR]") {
+ hook = TS_HTTP_READ_RESPONSE_HDR_HOOK;
+ } else if (word == "[SEND_RESPONSE_HDR]") {
+ hook = TS_HTTP_SEND_RESPONSE_HDR_HOOK;
+ } else if (word.empty()) {
+ // Error case, but shouldn't happen?
+ } else {
+ // Treat everything else as headers (+ possibly a qualifier)
+ if (pos1 != std::string::npos) { // Found a specifier
+ if (line[pos1] == '!') {
+ inverse = true;
+ pos1 = line.find_first_of(QUAL_DELIMITERS, pos1+1);
+ }
+ if (pos1 != std::string::npos) {
+ char trailer = ' ';
+
+ switch (line[pos1]) {
+ case '/':
+ type = QUAL_REGEX;
+ trailer = '/';
+ break;
+ case '"':
+ type = QUAL_STRING;
+ trailer = '"';
+ break;
+ case '*':
+ type = QUAL_POSTFIX;
+ trailer = ']';
+ break;
+ case '[':
+ type = QUAL_PREFIX;
+ trailer = '*';
+ break;
+ case '+':
+ type = QUAL_ADD;
+ inverse = false; // Can never inverse the add operator
+ trailer = '+';
+ break;
+ case '=':
+ type = QUAL_SET;
+ inverse = false; // Can never inverse the set operator
+ trailer = '=';
+ break;
+ default:
+ // TODO: Error case?
+ break;
+ }
+
+ pos2 = line.find_first_of(trailer, pos1+1);
+ if (pos2 != std::string::npos) {
+ qualifier = line.substr(pos1+1, pos2-pos1-1);
+ if (line[pos2+1] == 'i')
+ options |= PCRE_CASELESS;
+ TSDebug(PLUGIN_NAME, "Adding '%s' to hook %d, type is %d, qualifier is %c %s (%c)",
+ word.c_str(), hook, type, inverse ? '!' : ' ', qualifier.c_str(), options & PCRE_CASELESS ? 'i' : ' ');
+ add_entry(hook, word, qualifier, type, inverse, options);
+ } else {
+ TSError("Missing trailing delimiter in qualifier");
+ }
+ } else {
+ TSError("Missing leading delimiter in qualifier");
+ }
+ } else {
+ // No qualifier, so we'll nuke this header for all values
+ TSDebug(PLUGIN_NAME, "Adding %s to hook %d (unqualified)", word.c_str(), hook);
+ add_entry(hook, word);
+ }
+ }
+ }
+ }
+ }
+
+ return true;
+}
+
+
+void
+Rules::execute(TSMBuffer& reqp, TSMLoc& hdr_loc, const TSHttpHookID hook) const
+{
+ TSAssert(supported_hook(hook));
+
+ if (_entries[hook]) {
+ RulesEntry* n = _entries[hook];
+
+ TSDebug(PLUGIN_NAME, "Executing rules(s) for hook %d", hook);
+ do {
+ n->execute(reqp, hdr_loc);
+ } while (NULL != (n = n->next()));
+ }
+}
+
+
+} // End of namespace ::HeaderFilter
+
+
+/*
+ local variables:
+ mode: C++
+ indent-tabs-mode: nil
+ c-basic-offset: 2
+ c-comment-only-line-offset: 0
+ c-file-offsets: ((statement-block-intro . +)
+ (label . 0)
+ (statement-cont . +)
+ (innamespace . 0))
+ end:
+
+ Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
+*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/plugins/header_filter/rules.h
----------------------------------------------------------------------
diff --git a/plugins/header_filter/rules.h b/plugins/header_filter/rules.h
new file mode 100644
index 0000000..99043ca
--- /dev/null
+++ b/plugins/header_filter/rules.h
@@ -0,0 +1,168 @@
+/*
+ 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.
+*/
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//
+// Class for holding a set of configurations. There would be one global configuration, used
+// by all hooks / requests, and one optional configuration for each remap rule.
+//
+#ifndef __RULES_H__
+#define __RULES_H__ 1
+
+#include <string>
+#include <string.h>
+#include <ts/ts.h>
+#include <pcre.h>
+#include "lulu.h"
+
+namespace HeaderFilter {
+
+// The delimiters might look arbitrary, but are choosen to make parsing trivial
+enum QualifierTypes {
+ QUAL_NONE = 0,
+ QUAL_REGEX = 1, // Regular expression, /match/
+ QUAL_STRING = 2, // Full string, "match"
+ QUAL_PREFIX = 3, // Sub-string prefix, [match*
+ QUAL_POSTFIX = 4, // Sub-string postfix, *match]
+ // This is a semi-hack, but whatever (for now, until we get Lua module done!
+ QUAL_ADD = 5, // Add the header +string+
+ QUAL_SET = 6 // Set the header =string=, leaving only one header with the new value
+};
+
+
+class RulesEntry
+{
+public:
+ RulesEntry(const std::string& s, const std::string& q, QualifierTypes type, bool inverse, int options)
+ : _header(NULL), _h_len(0), _qualifier(NULL), _q_len(0), _q_type(type), _rex(NULL), _extra(NULL),
+ _inverse(inverse), _options(options), _next(NULL)
+ {
+ if (s.length() > 0) {
+ _header = TSstrdup(s.c_str());
+ _h_len = s.length();
+ }
+
+ if (q.length() > 0) {
+ _qualifier = TSstrdup(q.c_str());
+ _q_len = q.length();
+ if (_q_type == QUAL_REGEX) {
+ const char* error;
+ int erroffset;
+
+ _rex = pcre_compile(_qualifier, // the pattern
+ _options, // default options
+ &error, // for error message
+ &erroffset, // for error offset
+ NULL); // use default character tables
+ if (!_rex)
+ TSError("header_filter: PCRE failed on %s at offset %d: %s\n", _qualifier, erroffset, error);
+ }
+ }
+
+ TSDebug(PLUGIN_NAME_DBG, "Calling CTOR for RulesEntry, header is %s, qualifier is %s", _header, _qualifier);
+ }
+
+ ~RulesEntry()
+ {
+ TSDebug(PLUGIN_NAME_DBG, "Calling DTOR for RulesEntry");
+ delete _next; // Potentially "deep" recursion, but should be OK.
+ if (_header)
+ TSfree(_header);
+
+ if (QUAL_REGEX == _q_type) {
+ if (_rex)
+ pcre_free(_rex);
+ if (_extra)
+ pcre_free(_extra);
+ }
+ if (_qualifier)
+ TSfree(_qualifier);
+ }
+
+ void append(RulesEntry* entry);
+ void execute(TSMBuffer& reqp, TSMLoc& hdr_loc) const; // This is really the meat of the app
+ RulesEntry* next() const { return _next; }
+
+private:
+ DISALLOW_COPY_AND_ASSIGN(RulesEntry);
+
+ char* _header;
+ size_t _h_len,;
+ char* _qualifier;
+ size_t _q_len;
+ QualifierTypes _q_type;
+ pcre* _rex;
+ pcre_extra* _extra;
+ bool _inverse;
+ int _options;
+ RulesEntry* _next;
+};
+
+
+class Rules
+{
+public:
+ Rules()
+ {
+ TSDebug(PLUGIN_NAME_DBG, "Calling CTOR for Rules");
+ memset(_entries, 0, sizeof(_entries));
+ }
+
+ virtual ~Rules();
+
+ RulesEntry* add_entry(const TSHttpHookID hook, const std::string& s, const std::string& q="", QualifierTypes type = QUAL_NONE,
+ bool inverse=false, int options=0);
+ bool parse_file(const char* filename);
+
+ bool supported_hook(const TSHttpHookID hook) const
+ {
+ return ((hook == TS_HTTP_READ_REQUEST_HDR_HOOK) ||
+ (hook == TS_HTTP_SEND_REQUEST_HDR_HOOK) ||
+ (hook == TS_HTTP_READ_RESPONSE_HDR_HOOK) ||
+ (hook == TS_HTTP_SEND_RESPONSE_HDR_HOOK));
+ }
+
+ void execute(TSMBuffer& reqp, TSMLoc& hdr_loc, const TSHttpHookID hook) const;
+
+private:
+ DISALLOW_COPY_AND_ASSIGN(Rules);
+
+ RulesEntry* _entries[TS_HTTP_LAST_HOOK]; // One possible set of entries for each hook
+};
+
+} // End of namespace ::HeaderFilter
+
+
+#endif // __RULES_H__
+
+
+
+/*
+ local variables:
+ mode: C++
+ indent-tabs-mode: nil
+ c-basic-offset: 2
+ c-comment-only-line-offset: 0
+ c-file-offsets: ((statement-block-intro . +)
+ (label . 0)
+ (statement-cont . +)
+ (innamespace . 0))
+ end:
+
+ Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
+*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/rules.cc
----------------------------------------------------------------------
diff --git a/rules.cc b/rules.cc
deleted file mode 100644
index 41b0014..0000000
--- a/rules.cc
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- 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.
-*/
-
-//////////////////////////////////////////////////////////////////////////////////////////////
-//
-// Implemenation details for the rules class.
-//
-#include <fstream>
-#include <ts/ts.h>
-
-#include "rules.h"
-
-namespace HeaderFilter {
-
-const char* QUAL_DELIMITERS = "!/\"*[+=";
-
-
-// RulesEntry implementations
-void
-RulesEntry::append(RulesEntry* entry)
-{
- RulesEntry* n = this;
-
- while (NULL != n->_next)
- n = n->_next;
- n->_next = entry;
-}
-
-inline void
-add_header(TSMBuffer& reqp, TSMLoc& hdr_loc, const char* hdr, int hdr_len, const char* val, int val_len)
-{
- if (val_len <= 0) {
- TSDebug(PLUGIN_NAME, "\tWould set header %s to an empty value, skipping", hdr);
- } else {
- TSMLoc new_field;
-
- if (TS_SUCCESS == TSMimeHdrFieldCreateNamed(reqp, hdr_loc, hdr, hdr_len, &new_field)) {
- if (TS_SUCCESS == TSMimeHdrFieldValueStringInsert(reqp, hdr_loc, new_field, -1, val, val_len))
- if (TS_SUCCESS == TSMimeHdrFieldAppend(reqp, hdr_loc, new_field))
- TSDebug(PLUGIN_NAME, "\tAdded header %s: %s", hdr, val);
- TSHandleMLocRelease(reqp, hdr_loc, new_field);
- }
- }
-}
-
-void
-RulesEntry::execute(TSMBuffer& reqp, TSMLoc& hdr_loc) const
-{
- if (_q_type == QUAL_ADD) {
- add_header(reqp, hdr_loc, _header, _h_len, _qualifier, _q_len);
- } else {
- TSMLoc field = TSMimeHdrFieldFind(reqp, hdr_loc, _header, _h_len);
- bool first_set = true;
-
- while (field) {
- TSMLoc tmp;
- int val_len = 0;
- const char* val = NULL;
- bool nuke = false;
-
- if (_q_type != QUAL_NONE)
- val = TSMimeHdrFieldValueStringGet(reqp, hdr_loc, field, 0, &val_len);
-
- switch (_q_type) {
- case QUAL_NONE:
- nuke = true;
- break;
- case QUAL_REGEX:
- if (val_len > 0) {
- nuke = pcre_exec(_rex, // the compiled pattern
- _extra, // Extra data from study (maybe)
- val, // the subject string
- val_len, // the length of the subject
- 0, // start at offset 0 in the subject
- 0, // default options
- NULL, // no output vector for substring information
- 0) >= 0;
- }
- break;
-
- case QUAL_STRING:
- if (static_cast<size_t>(val_len) == _q_len) {
- if (_options & PCRE_CASELESS) {
- nuke = !strncasecmp(_qualifier, val, val_len);
- } else {
- nuke = !memcmp(_qualifier, val, val_len);
- }
- }
- break;
-
- case QUAL_PREFIX:
- if (static_cast<size_t>(val_len) >= _q_len) {
- if (_options & PCRE_CASELESS) {
- nuke = !strncasecmp(_qualifier, val, _q_len);
- } else {
- nuke = !memcmp(_qualifier, val, _q_len);
- }
- }
- break;
-
- case QUAL_POSTFIX:
- if (static_cast<size_t>(val_len) >= _q_len) {
- if (_options & PCRE_CASELESS) {
- nuke = !strncasecmp(_qualifier, val + val_len - _q_len, _q_len);
- } else {
- nuke = !memcmp(_qualifier, val + val_len - _q_len, _q_len);
- }
- }
- break;
- case QUAL_SET:
- if (first_set) {
- nuke = false;
- first_set = false;
- if (TS_SUCCESS == TSMimeHdrFieldValueStringSet(reqp, hdr_loc, field, -1, _qualifier, _q_len))
- TSDebug(PLUGIN_NAME, "\tSet header: %s: %s", _header, _qualifier);
- } else {
- // Nuke all other "duplicates" of this header
- nuke = true;
- }
-
- default:
- break;
- }
-
- tmp = TSMimeHdrFieldNextDup(reqp, hdr_loc, field);
- if (_inverse)
- nuke = !nuke;
- if (nuke) {
- if (TS_SUCCESS == TSMimeHdrFieldDestroy(reqp, hdr_loc, field))
- TSDebug(PLUGIN_NAME, "\tDeleting header %.*s", static_cast<int>(_h_len), _header);
- }
- TSHandleMLocRelease(reqp, hdr_loc, field);
- field = tmp;
- }
- }
-}
-
-
-// Rules class implementations
-Rules::~Rules()
-{
- TSDebug(PLUGIN_NAME_DBG, "Calling DTOR for Rules");
-
- for (int i = 0; i < TS_HTTP_LAST_HOOK; ++i)
- delete _entries[i];
-}
-
-RulesEntry*
-Rules::add_entry(const TSHttpHookID hook, const std::string& s, const std::string& q, QualifierTypes type, bool inverse, int options)
-{
- RulesEntry* e = new(RulesEntry)(s, q, type, inverse, options);
-
- TSAssert(supported_hook(hook));
- if (NULL == _entries[hook]) {
- _entries[hook] = e;
- } else {
- _entries[hook]->append(e);
- }
-
- return e;
-}
-
-bool
-Rules::parse_file(const char* filename)
-{
- std::ifstream f;
- TSHttpHookID hook = TS_HTTP_READ_REQUEST_HDR_HOOK;
- int lineno = 0;
-
- // TODO: Should we support "glob" here, to specify more than one filename?
- // TODO: Should we support a 'default' prefix here for the rules?
- f.open(filename, std::ios::in);
- if (!f.is_open()) {
- TSError("unable to open %s", filename);
- return false;
- }
- TSDebug(PLUGIN_NAME, "Parsing config file %s", filename);
- while (!f.eof()) {
- bool inverse = false;
- int options = 0;
- QualifierTypes type = QUAL_NONE;
- std::string line, word, qualifier;
- std::string::size_type pos1, pos2;
-
- getline(f, line);
- ++lineno;
- if (line.empty())
- continue;
-
- pos1 = line.find_first_not_of(" \t\n");
- if (pos1 != std::string::npos) {
- if (line[pos1] == '#') {
- continue; // Skip comments
- } else {
- pos2 = line.find_first_of("# \t\n", pos1+1); // end of word
- if (pos2 == std::string::npos) {
- word = line.substr(pos1);
- pos1 = pos2;
- } else {
- word = line.substr(pos1, pos2-pos1);
- pos1 = line.find_first_of(QUAL_DELIMITERS, pos2+1);
- }
-
- if (word == "[READ_REQUEST_HDR]") {
- hook = TS_HTTP_READ_REQUEST_HDR_HOOK;
- } else if (word == "[SEND_REQUEST_HDR]") {
- hook = TS_HTTP_SEND_REQUEST_HDR_HOOK;
- } else if (word == "[READ_RESPONSE_HDR]") {
- hook = TS_HTTP_READ_RESPONSE_HDR_HOOK;
- } else if (word == "[SEND_RESPONSE_HDR]") {
- hook = TS_HTTP_SEND_RESPONSE_HDR_HOOK;
- } else if (word.empty()) {
- // Error case, but shouldn't happen?
- } else {
- // Treat everything else as headers (+ possibly a qualifier)
- if (pos1 != std::string::npos) { // Found a specifier
- if (line[pos1] == '!') {
- inverse = true;
- pos1 = line.find_first_of(QUAL_DELIMITERS, pos1+1);
- }
- if (pos1 != std::string::npos) {
- char trailer = ' ';
-
- switch (line[pos1]) {
- case '/':
- type = QUAL_REGEX;
- trailer = '/';
- break;
- case '"':
- type = QUAL_STRING;
- trailer = '"';
- break;
- case '*':
- type = QUAL_POSTFIX;
- trailer = ']';
- break;
- case '[':
- type = QUAL_PREFIX;
- trailer = '*';
- break;
- case '+':
- type = QUAL_ADD;
- inverse = false; // Can never inverse the add operator
- trailer = '+';
- break;
- case '=':
- type = QUAL_SET;
- inverse = false; // Can never inverse the set operator
- trailer = '=';
- break;
- default:
- // TODO: Error case?
- break;
- }
-
- pos2 = line.find_first_of(trailer, pos1+1);
- if (pos2 != std::string::npos) {
- qualifier = line.substr(pos1+1, pos2-pos1-1);
- if (line[pos2+1] == 'i')
- options |= PCRE_CASELESS;
- TSDebug(PLUGIN_NAME, "Adding '%s' to hook %d, type is %d, qualifier is %c %s (%c)",
- word.c_str(), hook, type, inverse ? '!' : ' ', qualifier.c_str(), options & PCRE_CASELESS ? 'i' : ' ');
- add_entry(hook, word, qualifier, type, inverse, options);
- } else {
- TSError("Missing trailing delimiter in qualifier");
- }
- } else {
- TSError("Missing leading delimiter in qualifier");
- }
- } else {
- // No qualifier, so we'll nuke this header for all values
- TSDebug(PLUGIN_NAME, "Adding %s to hook %d (unqualified)", word.c_str(), hook);
- add_entry(hook, word);
- }
- }
- }
- }
- }
-
- return true;
-}
-
-
-void
-Rules::execute(TSMBuffer& reqp, TSMLoc& hdr_loc, const TSHttpHookID hook) const
-{
- TSAssert(supported_hook(hook));
-
- if (_entries[hook]) {
- RulesEntry* n = _entries[hook];
-
- TSDebug(PLUGIN_NAME, "Executing rules(s) for hook %d", hook);
- do {
- n->execute(reqp, hdr_loc);
- } while (NULL != (n = n->next()));
- }
-}
-
-
-} // End of namespace ::HeaderFilter
-
-
-/*
- local variables:
- mode: C++
- indent-tabs-mode: nil
- c-basic-offset: 2
- c-comment-only-line-offset: 0
- c-file-offsets: ((statement-block-intro . +)
- (label . 0)
- (statement-cont . +)
- (innamespace . 0))
- end:
-
- Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
-*/
http://git-wip-us.apache.org/repos/asf/trafficserver/blob/19921914/rules.h
----------------------------------------------------------------------
diff --git a/rules.h b/rules.h
deleted file mode 100644
index 99043ca..0000000
--- a/rules.h
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- 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.
-*/
-
-//////////////////////////////////////////////////////////////////////////////////////////////
-//
-// Class for holding a set of configurations. There would be one global configuration, used
-// by all hooks / requests, and one optional configuration for each remap rule.
-//
-#ifndef __RULES_H__
-#define __RULES_H__ 1
-
-#include <string>
-#include <string.h>
-#include <ts/ts.h>
-#include <pcre.h>
-#include "lulu.h"
-
-namespace HeaderFilter {
-
-// The delimiters might look arbitrary, but are choosen to make parsing trivial
-enum QualifierTypes {
- QUAL_NONE = 0,
- QUAL_REGEX = 1, // Regular expression, /match/
- QUAL_STRING = 2, // Full string, "match"
- QUAL_PREFIX = 3, // Sub-string prefix, [match*
- QUAL_POSTFIX = 4, // Sub-string postfix, *match]
- // This is a semi-hack, but whatever (for now, until we get Lua module done!
- QUAL_ADD = 5, // Add the header +string+
- QUAL_SET = 6 // Set the header =string=, leaving only one header with the new value
-};
-
-
-class RulesEntry
-{
-public:
- RulesEntry(const std::string& s, const std::string& q, QualifierTypes type, bool inverse, int options)
- : _header(NULL), _h_len(0), _qualifier(NULL), _q_len(0), _q_type(type), _rex(NULL), _extra(NULL),
- _inverse(inverse), _options(options), _next(NULL)
- {
- if (s.length() > 0) {
- _header = TSstrdup(s.c_str());
- _h_len = s.length();
- }
-
- if (q.length() > 0) {
- _qualifier = TSstrdup(q.c_str());
- _q_len = q.length();
- if (_q_type == QUAL_REGEX) {
- const char* error;
- int erroffset;
-
- _rex = pcre_compile(_qualifier, // the pattern
- _options, // default options
- &error, // for error message
- &erroffset, // for error offset
- NULL); // use default character tables
- if (!_rex)
- TSError("header_filter: PCRE failed on %s at offset %d: %s\n", _qualifier, erroffset, error);
- }
- }
-
- TSDebug(PLUGIN_NAME_DBG, "Calling CTOR for RulesEntry, header is %s, qualifier is %s", _header, _qualifier);
- }
-
- ~RulesEntry()
- {
- TSDebug(PLUGIN_NAME_DBG, "Calling DTOR for RulesEntry");
- delete _next; // Potentially "deep" recursion, but should be OK.
- if (_header)
- TSfree(_header);
-
- if (QUAL_REGEX == _q_type) {
- if (_rex)
- pcre_free(_rex);
- if (_extra)
- pcre_free(_extra);
- }
- if (_qualifier)
- TSfree(_qualifier);
- }
-
- void append(RulesEntry* entry);
- void execute(TSMBuffer& reqp, TSMLoc& hdr_loc) const; // This is really the meat of the app
- RulesEntry* next() const { return _next; }
-
-private:
- DISALLOW_COPY_AND_ASSIGN(RulesEntry);
-
- char* _header;
- size_t _h_len,;
- char* _qualifier;
- size_t _q_len;
- QualifierTypes _q_type;
- pcre* _rex;
- pcre_extra* _extra;
- bool _inverse;
- int _options;
- RulesEntry* _next;
-};
-
-
-class Rules
-{
-public:
- Rules()
- {
- TSDebug(PLUGIN_NAME_DBG, "Calling CTOR for Rules");
- memset(_entries, 0, sizeof(_entries));
- }
-
- virtual ~Rules();
-
- RulesEntry* add_entry(const TSHttpHookID hook, const std::string& s, const std::string& q="", QualifierTypes type = QUAL_NONE,
- bool inverse=false, int options=0);
- bool parse_file(const char* filename);
-
- bool supported_hook(const TSHttpHookID hook) const
- {
- return ((hook == TS_HTTP_READ_REQUEST_HDR_HOOK) ||
- (hook == TS_HTTP_SEND_REQUEST_HDR_HOOK) ||
- (hook == TS_HTTP_READ_RESPONSE_HDR_HOOK) ||
- (hook == TS_HTTP_SEND_RESPONSE_HDR_HOOK));
- }
-
- void execute(TSMBuffer& reqp, TSMLoc& hdr_loc, const TSHttpHookID hook) const;
-
-private:
- DISALLOW_COPY_AND_ASSIGN(Rules);
-
- RulesEntry* _entries[TS_HTTP_LAST_HOOK]; // One possible set of entries for each hook
-};
-
-} // End of namespace ::HeaderFilter
-
-
-#endif // __RULES_H__
-
-
-
-/*
- local variables:
- mode: C++
- indent-tabs-mode: nil
- c-basic-offset: 2
- c-comment-only-line-offset: 0
- c-file-offsets: ((statement-block-intro . +)
- (label . 0)
- (statement-cont . +)
- (innamespace . 0))
- end:
-
- Indent with: /usr/bin/indent -ncs -nut -npcs -l 120 logstats.cc
-*/