mod_dosdetector を Apache 2.0 系で利用したい

このページは約 37分6秒で読めます。

はてなの中の人が作った mod_dosdetector を Vine 3.2 上の Apache 2.0.55 で利用しようと思ったら、

$ make
/usr/bin/apxs -c    mod_dosdetector.c
/usr/bin/libtool --silent --mode=compile gcc -prefer-pic  -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -g -O2 -pthread -I/usr/include/apache2  -I/usr/include/apache2   -I/usr/include/apache2 -I/usr/include  -c -o mod_dosdetector.lo mod_dosdetector.c && touch mod_dosdetector.slo
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:26:1: warning: "REG_ICASE" redefined
In file included from mod_dosdetector.c:31:
/usr/include/regex.h:277:1: warning: this is the location of the previous definition
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:27:1: warning: "REG_NEWLINE" redefined
In file included from mod_dosdetector.c:31:
/usr/include/regex.h:282:1: warning: this is the location of the previous definition
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:28:1: warning: "REG_NOTBOL" redefined
In file included from mod_dosdetector.c:31:
/usr/include/regex.h:296:1: warning: this is the location of the previous definition
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:29:1: warning: "REG_NOTEOL" redefined
In file included from mod_dosdetector.c:31:
/usr/include/regex.h:299:1: warning: this is the location of the previous definition
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:34:1: warning: "REG_EXTENDED" redefined
In file included from mod_dosdetector.c:31:
/usr/include/regex.h:273:1: warning: this is the location of the previous definition
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:35:1: warning: "REG_NOSUB" redefined
In file included from mod_dosdetector.c:31:
/usr/include/regex.h:286:1: warning: this is the location of the previous definition
In file included from /usr/include/apache2/httpd.h:44,
                 from mod_dosdetector.c:32:
/usr/include/apache2/pcreposix.h:41: error: redefinition of `REG_BADBR'
/usr/include/regex.h:323: error: `REG_BADBR' previously defined here
/usr/include/apache2/pcreposix.h:42: error: redefinition of `REG_BADPAT'
/usr/include/regex.h:315: error: `REG_BADPAT' previously defined here
/usr/include/apache2/pcreposix.h:43: error: redefinition of `REG_BADRPT'
/usr/include/regex.h:326: error: `REG_BADRPT' previously defined here
/usr/include/apache2/pcreposix.h:44: error: redefinition of `REG_EBRACE'
/usr/include/regex.h:322: error: `REG_EBRACE' previously defined here
/usr/include/apache2/pcreposix.h:45: error: redefinition of `REG_EBRACK'
/usr/include/regex.h:320: error: `REG_EBRACK' previously defined here
/usr/include/apache2/pcreposix.h:46: error: redefinition of `REG_ECOLLATE'
/usr/include/regex.h:316: error: `REG_ECOLLATE' previously defined here
/usr/include/apache2/pcreposix.h:47: error: redefinition of `REG_ECTYPE'
/usr/include/regex.h:317: error: `REG_ECTYPE' previously defined here
/usr/include/apache2/pcreposix.h:48: error: redefinition of `REG_EESCAPE'
/usr/include/regex.h:318: error: `REG_EESCAPE' previously defined here
/usr/include/apache2/pcreposix.h:50: error: redefinition of `REG_EPAREN'
/usr/include/regex.h:321: error: `REG_EPAREN' previously defined here
/usr/include/apache2/pcreposix.h:51: error: redefinition of `REG_ERANGE'
/usr/include/regex.h:324: error: `REG_ERANGE' previously defined here
/usr/include/apache2/pcreposix.h:52: error: redefinition of `REG_ESIZE'
/usr/include/regex.h:330: error: `REG_ESIZE' previously defined here
/usr/include/apache2/pcreposix.h:53: error: redefinition of `REG_ESPACE'
/usr/include/regex.h:325: error: `REG_ESPACE' previously defined here
/usr/include/apache2/pcreposix.h:54: error: redefinition of `REG_ESUBREG'
/usr/include/regex.h:319: error: `REG_ESUBREG' previously defined here
/usr/include/apache2/pcreposix.h:57: error: redefinition of `REG_NOMATCH'
/usr/include/regex.h:311: error: `REG_NOMATCH' previously defined here
/usr/include/apache2/pcreposix.h:66: error: conflicting types for `regex_t'
/usr/include/regex.h:412: error: previous declaration of `regex_t'
/usr/include/apache2/pcreposix.h:70: warning: redefinition of `regoff_t'
/usr/include/regex.h:415: warning: `regoff_t' previously declared here
/usr/include/apache2/pcreposix.h:75: error: conflicting types for `regmatch_t'
/usr/include/regex.h:443: error: previous declaration of `regmatch_t'
/usr/include/apache2/pcreposix.h:79: error: conflicting types for `regcomp'
/usr/include/regex.h:558: error: previous declaration of `regcomp'
/usr/include/apache2/pcreposix.h:80: error: conflicting types for `regexec'
/usr/include/regex.h:562: error: previous declaration of `regexec'
/usr/include/apache2/pcreposix.h:81: error: conflicting types for `regerror'
/usr/include/regex.h:567: error: previous declaration of `regerror'
/usr/include/apache2/pcreposix.h:82: error: conflicting types for `regfree'
/usr/include/regex.h:570: error: previous declaration of `regfree'
mod_dosdetector.c: In function `dosdetector_handler':
mod_dosdetector.c:264: error: `ap_regmatch_t' undeclared (first use in this function)
mod_dosdetector.c:264: error: (Each undeclared identifier is reported only once
mod_dosdetector.c:264: error: for each function it appears in.)
mod_dosdetector.c:264: error: syntax error before "regmatch"
mod_dosdetector.c:265: error: `ap_regex_t' undeclared (first use in this function)
mod_dosdetector.c:265: error: `contenttype_regexp' undeclared (first use in this function)
mod_dosdetector.c:265: error: syntax error before ')' token
mod_dosdetector.c:267: error: `regmatch' undeclared (first use in this function)
apxs:Error: Command failed with rc=65536
.
make: *** [mod_dosdetector.so] エラー 1

とステキな量のエラーが出てしまったので諦めていたのですが、今日検索したら、mizzy.org : mod_dosdetector を Apache 2.0 系で動かすパッチ というぐれぇとなパッチが提供されていたので、早速テスト。

$ patch < mod_dosdetector.patch 
(Stripping trailing CRs from patch.)
patching file mod_dosdetector.c
Hunk #1 FAILED at 28.
Hunk #2 FAILED at 40.
Hunk #3 succeeded at 351 with fuzz 2 (offset 249 lines).
Hunk #4 FAILED at 593.
patch unexpectedly ends in middle of line
Hunk #5 FAILED at 722.
4 out of 5 hunks FAILED -- saving rejects to file mod_dosdetector.c.rej&#91;/code&#93;

orz

仕方ないので手パッチを行い、インストール。

&#91;code&#93;$ make
/usr/bin/apxs -c    mod_dosdetector.c
/usr/bin/libtool --silent --mode=compile gcc -prefer-pic  -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -g -O2 -pthread -I/usr/include/apache2  -I/usr/include/apache2   -I/usr/include/apache2 -I/usr/include  -c -o mod_dosdetector.lo mod_dosdetector.c && touch mod_dosdetector.slo
/usr/bin/libtool --silent --mode=link gcc -o mod_dosdetector.la  -rpath /usr/lib/apache2/modules -module -avoid-version    mod_dosdetector.lo

$ su
Password: 
# make install
/usr/bin/apxs -c    mod_dosdetector.c
/usr/bin/libtool --silent --mode=compile gcc -prefer-pic  -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -g -O2 -pthread -I/usr/include/apache2  -I/usr/include/apache2   -I/usr/include/apache2 -I/usr/include  -c -o mod_dosdetector.lo mod_dosdetector.c && touch mod_dosdetector.slo
/usr/bin/libtool --silent --mode=link gcc -o mod_dosdetector.la  -rpath /usr/lib/apache2/modules -module -avoid-version    mod_dosdetector.lo
/usr/bin/apxs -c -i -a -n 'dosdetector' mod_dosdetector.c
/usr/bin/libtool --silent --mode=compile gcc -prefer-pic  -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -g -O2 -pthread -I/usr/include/apache2  -I/usr/include/apache2   -I/usr/include/apache2 -I/usr/include  -c -o mod_dosdetector.lo mod_dosdetector.c && touch mod_dosdetector.slo
/usr/bin/libtool --silent --mode=link gcc -o mod_dosdetector.la  -rpath /usr/lib/apache2/modules -module -avoid-version    mod_dosdetector.lo
/etc/apache2/build/instdso.sh SH_LIBTOOL='/usr/bin/libtool' mod_dosdetector.la /usr/lib/apache2/modules
/usr/bin/libtool --mode=install cp mod_dosdetector.la /usr/lib/apache2/modules/
cp .libs/mod_dosdetector.so /usr/lib/apache2/modules/mod_dosdetector.so
cp .libs/mod_dosdetector.lai /usr/lib/apache2/modules/mod_dosdetector.la
cp .libs/mod_dosdetector.a /usr/lib/apache2/modules/mod_dosdetector.a
ranlib /usr/lib/apache2/modules/mod_dosdetector.a
chmod 644 /usr/lib/apache2/modules/mod_dosdetector.a
PATH="$PATH:/sbin" ldconfig -n /usr/lib/apache2/modules
----------------------------------------------------------------------
Libraries have been installed in:
   /usr/lib/apache2/modules

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,--rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
chmod 755 /usr/lib/apache2/modules/mod_dosdetector.so
&#91;activating module `dosdetector' in /etc/apache2/conf/apache2.conf&#93;
&#91;/code&#93;

とりあえずインストール完了まではこぎ着けました。あとは設定を詰めてテストしよう。

<h4>パッチ内容</h4>

手パッチしたのを diff した結果。Makefile も書き換え必要だったので一緒に。

 $ diff -u Makefile.org Makefile
--- Makefile.org        2007-09-19 10:53:39.000000000 +0900
+++ Makefile    2007-09-19 10:53:45.000000000 +0900
@@ -4,7 +4,7 @@
 ##
 
 #   the used tools
-APXS=/usr/sbin/apxs
+APXS=/usr/bin/apxs
 APACHECTL=apachectl
 
 #   additional user defines, includes and libraries
 $ diff -u mod_dosdetector.c.org  mod_dosdetector.c
--- mod_dosdetector.c.org       2007-09-19 10:53:15.000000000 +0900
+++ mod_dosdetector.c   2007-09-19 10:53:31.000000000 +0900
@@ -28,7 +28,6 @@
 #include <arpa/inet.h>
 //#include <netinet/in.h>
 #include <time.h>
-#include <regex.h>
 #include "httpd.h"
 #include "http_config.h"
 #include "http_request.h"
@@ -41,6 +40,7 @@
 #include "apr_strings.h"
 #include "apr_shm.h"
 #include "apr_thread_mutex.h"
+#include "apr_version.h"
 
 //#define _DEBUG
 
@@ -102,6 +102,90 @@
 static apr_global_mutex_t *lock = NULL;
 static apr_shm_t *shm = NULL;
 
+/* apr version 0.x not support apr_shm_remove, I have to copy it from apr version 1.x */
+#if (APR_MAJOR_VERSION < 1)
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
+#ifdef HAVE_SYS_IPC_H
+#include <sys/ipc.h>
+#endif
+#ifdef HAVE_SYS_MUTEX_H
+#include <sys/mutex.h>
+#endif
+#ifdef HAVE_SYS_SHM_H
+#include <sys/shm.h>
+#endif
+#if !defined(SHM_R)
+#define SHM_R 0400
+#endif
+#if !defined(SHM_W)
+#define SHM_W 0200
+#endif
+#ifdef HAVE_SYS_FILE_H
+#include <sys/file.h>
+#endif
+
+static apr_status_t apr_shm_remove(const char *filename, apr_pool_t * pool)
+{
+#if APR_USE_SHMEM_SHMGET
+    apr_status_t status;
+    apr_file_t *file;
+    key_t shmkey;
+    int shmid;
+#endif
+
+#if APR_USE_SHMEM_MMAP_TMP
+    return apr_file_remove(filename, pool);
+#endif
+#if APR_USE_SHMEM_MMAP_SHM
+    if (shm_unlink(filename) == -1) {
+        return errno;
+    }
+    return APR_SUCCESS;
+#endif
+#if APR_USE_SHMEM_SHMGET
+    /* Presume that the file already exists; just open for writing */
+    status = apr_file_open(&file, filename, APR_WRITE,
+                           APR_OS_DEFAULT, pool);
+    if (status) {
+        return status;
+    }
+
+    /* ftok() (on solaris at least) requires that the file actually
+     * exist before calling ftok(). */
+    shmkey = ftok(filename, 1);
+    if (shmkey == (key_t) - 1) {
+        goto shm_remove_failed;
+    }
+
+    apr_file_close(file);
+
+    if*1 < 0) {
+        goto shm_remove_failed;
+    }
+
+    /* Indicate that the segment is to be destroyed as soon
+     * as all processes have detached. This also disallows any
+     * new attachments to the segment. */
+    if (shmctl(shmid, IPC_RMID, NULL) == -1) {
+        goto shm_remove_failed;
+    }
+    return apr_file_remove(filename, pool);
+
+  shm_remove_failed:
+    status = errno;
+    /* ensure the file has been removed anyway. */
+    apr_file_remove(filename, pool);
+    return status;
+#endif
+
+    /* No support for anonymous shm */
+    return APR_ENOTIMPL;
+}
+#endif                            /* APR_MAJOR_VERSION<1 */
+
+
 
 static apr_status_t cleanup_shm(void *not_used)
 {
@@ -261,8 +345,9 @@
 
        address = r->connection->remote_ip;
 
-    ap_regmatch_t regmatch[AP_MAX_REG_MATCH];
-    ap_regex_t **contenttype_regexp = (ap_regex_t **) cfg->contenttype_regexp->elts;
+       regmatch_t regmatch[AP_MAX_REG_MATCH];
+       regex_t **contenttype_regexp = (regex_t **) cfg->contenttype_regexp->elts;
+       
        for (i = 0; i < cfg->contenttype_regexp->nelts; i++) {
                if(!ap_regexec(contenttype_regexp[i], content_type, AP_MAX_REG_MATCH, regmatch, 0)){
                        //ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, 0, "ignoring content-type: %s", content_type);
@@ -390,14 +475,12 @@
                                         const char *arg)
 {
     dosdetector_dir_config *cfg = (dosdetector_dir_config *) mconfig;
-    char **ignore_contenttype = (char **) cfg->ignore_contenttype->elts;
-
-    *(char **) apr_array_push(cfg->ignore_contenttype) = apr_pstrdup(parms->pool, arg);
-
-       int i;
        regex_t *regexp;
-       for (i = 0; i < cfg->ignore_contenttype->nelts; i++) {
-        regexp = (regex_t *)ap_pregcomp(parms->pool, (char *)ignore_contenttype[i], REG_EXTENDED|REG_ICASE);
+       char *type;
+
+       while (*arg) {
+               type = ap_getword_conf(parms->pool, &arg);
+               regexp = ap_pregcomp(parms->pool, type, REG_EXTENDED|REG_ICASE);
                *(regex_t **)apr_array_push(cfg->contenttype_regexp) = regexp;
     }

あれ? でも内容一緒だな。パッチの当て方ミスってたのかなorz

設定の仕方がわからない

どうにも設定のコツがわからないので、作者手ずからの説明が書かれているという Software Design 2007年 09月号 を注文。Apache モジュールの使い方特集らしいので、役に立ちそう。

Software Design (ソフトウエア デザイン) 2007年 09月号 [雑誌]
Software Design (ソフトウエア デザイン) 2007年 09月号 [雑誌]
技術評論社 2007-08-18
売り上げランキング :

Amazonで詳しく見るby G-Tools

Software Design (ソフトウエア デザイン) 2007年 06月号 [雑誌] WEB+DB PRESS Vol.40 WEB+DB PRESS Vol.39 Software Design (ソフトウエア デザイン) 2007年 10月号 [雑誌] WEB+DB PRESS Vol.38

  1. shmid = shmget(shmkey, 0, SHM_R | SHM_W []
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