--- /dev/null
+/* Copyright 2004 The Apache Software Foundation
+ *
+ * Licensed 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.
+ */
+
+/*
+ * mod_version.c
+ * Allow conditional configuration depending on the httpd version
+ *
+ * André Malo (nd/perlig.de), January 2004
+ *
+ * Some stuff coded here is heavily based on the core <IfModule>
+ * containers.
+ *
+ * The module makes the following confgurations possible:
+ *
+ * <IfVersion op major.minor.patch>
+ * # conditional config here ...
+ *</IfVersion>
+ *
+ * where "op" is one of:
+ * = / == equal
+ * > greater than
+ * >= greater or equal
+ * < less than
+ * <= less or equal
+ *
+ * If minor version and patch level are omitted they are assumed to be 0.
+ *
+ * Alternatively you can match the whole version (including some vendor-added
+ * string of the CORE version, see ap_release.h) against a regular expression:
+ *
+ * <IfVersion op regex>
+ * # conditional config here ...
+ *</IfVersion>
+ *
+ * where "op" is one of:
+ * = / == match; regex must be surrounded by slashes
+ * ~ match; regex MAY NOT be surrounded by slashes
+ *
+ * Note that all operators may be preceeded by an exclamation mark
+ * (without spaces) in order to reverse their meaning.
+ *
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+
+#include "httpd.h"
+#include "http_config.h"
+#include "http_log.h"
+
+
+/* module structure */
+module AP_MODULE_DECLARE_DATA version_module;
+
+/* queried httpd version */
+static ap_version_t httpd_version;
+
+
+/*
+ * compare the supplied version with the core one
+ */
+static int compare_version(char *version_string, const char **error)
+{
+ char *p = version_string, *ep;
+ int version[3] = {0, 0, 0};
+ int c = 0;
+
+ *error = "Version appears to be invalid. It must have the format "
+ "major[.minor[.patch]] where major, minor and patch are "
+ "numbers.";
+
+ if (!apr_isdigit(*p)) {
+ return 0;
+ }
+
+ /* parse supplied version */
+ ep = version_string + strlen(version_string);
+ while (p <= ep && c < 3) {
+ if (*p == '.') {
+ *p = '\0';
+ }
+
+ if (!*p) {
+ version[c++] = atoi(version_string);
+ version_string = ++p;
+ continue;
+ }
+
+ if (!apr_isdigit(*p)) {
+ break;
+ }
+
+ ++p;
+ }
+
+ if (p < ep) { /* syntax error */
+ return 0;
+ }
+
+ *error = NULL;
+
+ if (httpd_version.major > version[0]) {
+ return 1;
+ }
+ else if (httpd_version.major < version[0]) {
+ return -1;
+ }
+ else if (httpd_version.minor > version[1]) {
+ return 1;
+ }
+ else if (httpd_version.minor < version[1]) {
+ return -1;
+ }
+ else if (httpd_version.patch > version[2]) {
+ return 1;
+ }
+ else if (httpd_version.patch < version[2]) {
+ return -1;
+ }
+
+ /* seems to be the same */
+ return 0;
+}
+
+/*
+ * match version against a regular expression
+ */
+static int match_version(apr_pool_t *pool, char *version_string,
+ const char **error)
+{
+ regex_t *compiled;
+ const char *to_match;
+ int rc;
+
+ compiled = ap_pregcomp(pool, version_string, REG_EXTENDED);
+ if (!compiled) {
+ *error = "Unable to compile regular expression";
+ return 0;
+ }
+
+ *error = NULL;
+
+ to_match = apr_psprintf(pool, "%d.%d.%d%s",
+ httpd_version.major,
+ httpd_version.minor,
+ httpd_version.patch,
+ httpd_version.add_string);
+
+ rc = !ap_regexec(compiled, to_match, 0, NULL, 0);
+
+ ap_pregfree(pool, compiled);
+ return rc;
+}
+
+/*
+ * Implements the <IfVersion> container
+ */
+static const char *start_ifversion(cmd_parms *cmd, void *mconfig,
+ const char *arg1, const char *arg2,
+ const char *arg3)
+{
+ const char *endp;
+ int reverse = 0, done = 0, match = 0, compare;
+ const char *p, *error;
+ char c;
+
+ /* supplying one argument is possible, we assume an equality check then */
+ if (!arg2) {
+ arg2 = arg1;
+ arg1 = "=";
+ }
+
+ /* surrounding quotes without operator */
+ if (!arg3 && *arg2 == '>' && !arg2[1]) {
+ arg3 = ">";
+ arg2 = arg1;
+ arg1 = "=";
+ }
+
+ /* the third argument makes version surrounding quotes plus operator
+ * possible.
+ */
+ endp = arg2 + strlen(arg2);
+ if ( endp == arg2
+ || (!(arg3 && *arg3 == '>' && !arg3[1]) && *--endp != '>')) {
+ return apr_pstrcat(cmd->pool, cmd->cmd->name,
+ "> directive missing closing '>'", NULL);
+ }
+
+ p = arg1;
+ if (*p == '!') {
+ reverse = 1;
+ if (p[1]) {
+ ++p;
+ }
+ }
+
+ c = *p++;
+ if (!*p || (*p == '=' && !p[1] && c != '~')) {
+ if (!httpd_version.major) {
+ ap_get_server_revision(&httpd_version);
+ }
+
+ done = 1;
+ switch (c) {
+ case '=':
+ /* normal comparison */
+ if (*arg2 != '/') {
+ compare = compare_version(apr_pstrmemdup(cmd->pool, arg2,
+ endp-arg2),
+ &error);
+ if (error) {
+ return error;
+ }
+
+ match = !compare;
+ break;
+ }
+
+ /* regexp otherwise */
+ if (endp == ++arg2 || *--endp != '/') {
+ return "Missing delimiting / of regular expression.";
+ }
+
+ case '~':
+ /* regular expression */
+ match = match_version(cmd->pool, apr_pstrmemdup(cmd->pool, arg2,
+ endp-arg2),
+ &error);
+ if (error) {
+ return error;
+ }
+ break;
+
+ case '<':
+ compare = compare_version(apr_pstrmemdup(cmd->pool, arg2,
+ endp-arg2),
+ &error);
+ if (error) {
+ return error;
+ }
+
+ match = ((-1 == compare) || (*p && !compare));
+ break;
+
+ case '>':
+ compare = compare_version(apr_pstrmemdup(cmd->pool, arg2,
+ endp-arg2),
+ &error);
+ if (error) {
+ return error;
+ }
+
+ match = ((1 == compare) || (*p && !compare));
+ break;
+
+ default:
+ done = 0;
+ break;
+ }
+ }
+
+ if (!done) {
+ return apr_pstrcat(cmd->pool, "unrecognized operator '", arg1, "'",
+ NULL);
+ }
+
+ if ((!reverse && match) || (reverse && !match)) {
+ ap_directive_t *parent = NULL;
+ ap_directive_t *current = NULL;
+ const char *retval;
+
+ retval = ap_build_cont_config(cmd->pool, cmd->temp_pool, cmd,
+ ¤t, &parent, "<IfVersion");
+ *(ap_directive_t **)mconfig = current;
+ return retval;
+ }
+
+ *(ap_directive_t **)mconfig = NULL;
+ return ap_soak_end_container(cmd, "<IfVersion");
+}
+
+static const command_rec version_cmds[] = {
+ AP_INIT_TAKE123("<IfVersion", start_ifversion, NULL, EXEC_ON_READ | OR_ALL,
+ "a comparison operator, a version (and a delimiter)"),
+ { NULL }
+};
+
+module AP_MODULE_DECLARE_DATA version_module =
+{
+ STANDARD20_MODULE_STUFF,
+ NULL, /* dir config creater */
+ NULL, /* dir merger --- default is to override */
+ NULL, /* server config */
+ NULL, /* merge server configs */
+ version_cmds, /* command apr_table_t */
+ NULL, /* register hooks */
+};
--- /dev/null
+# Microsoft Developer Studio Project File - Name="mod_version" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+
+CFG=mod_version - Win32 Release
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE
+!MESSAGE NMAKE /f "mod_version.mak".
+!MESSAGE
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE
+!MESSAGE NMAKE /f "mod_version.mak" CFG="mod_version - Win32 Release"
+!MESSAGE
+!MESSAGE Possible choices for configuration are:
+!MESSAGE
+!MESSAGE "mod_version - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "mod_version - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+MTL=midl.exe
+RSC=rc.exe
+
+!IF "$(CFG)" == "mod_version - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /FD /c
+# ADD CPP /nologo /MD /W3 /Zi /O2 /I "../../include" /I "../../srclib/apr/include" /I "../../srclib/apr-util/include" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /Fd"Release\mod_version_src" /FD /c
+# ADD BASE MTL /nologo /D "NDEBUG" /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib /nologo /subsystem:windows /dll /machine:I386 /out:"Release/mod_version.so" /base:@..\..\os\win32\BaseAddr.ref,mod_version.so
+# ADD LINK32 kernel32.lib /nologo /subsystem:windows /dll /incremental:no /debug /machine:I386 /out:"Release/mod_version.so" /base:@..\..\os\win32\BaseAddr.ref,mod_version.so /opt:ref
+
+!ELSEIF "$(CFG)" == "mod_version - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /FD /c
+# ADD CPP /nologo /MDd /W3 /GX /Zi /Od /I "../../include" /I "../../srclib/apr/include" /I "../../srclib/apr-util/include" /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /Fd"Debug\mod_version_src" /FD /c
+# ADD BASE MTL /nologo /D "_DEBUG" /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib /nologo /subsystem:windows /dll /incremental:no /debug /machine:I386 /out:"Debug/mod_version.so" /base:@..\..\os\win32\BaseAddr.ref,mod_version.so
+# ADD LINK32 kernel32.lib /nologo /subsystem:windows /dll /incremental:no /debug /machine:I386 /out:"Debug/mod_version.so" /base:@..\..\os\win32\BaseAddr.ref,mod_version.so
+
+!ENDIF
+
+# Begin Target
+
+# Name "mod_version - Win32 Release"
+# Name "mod_version - Win32 Debug"
+# Begin Source File
+
+SOURCE=.\mod_version.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mod_version.rc
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\build\win32\win32ver.awk
+
+!IF "$(CFG)" == "mod_version - Win32 Release"
+
+# PROP Ignore_Default_Tool 1
+# Begin Custom Build - Creating Version Resource
+InputPath=..\..\build\win32\win32ver.awk
+
+".\mod_version.rc" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+ awk -f ../../build/win32/win32ver.awk mod_version.so "version_module for Apache" ../../include/ap_release.h > .\mod_version.rc
+
+# End Custom Build
+
+!ELSEIF "$(CFG)" == "mod_version - Win32 Debug"
+
+# PROP Ignore_Default_Tool 1
+# Begin Custom Build - Creating Version Resource
+InputPath=..\..\build\win32\win32ver.awk
+
+".\mod_version.rc" : $(SOURCE) "$(INTDIR)" "$(OUTDIR)"
+ awk -f ../../build/win32/win32ver.awk mod_version.so "version_module for Apache" ../../include/ap_release.h > .\mod_version.rc
+
+# End Custom Build
+
+!ENDIF
+
+# End Source File
+# End Target
+# End Project
projects / apache / commitdiff