Report an error if requested feature isn't available on current platform -- SMTP mail, syslog, direct i/o hashing. And limit direct i/o to Linux for now, since elsewhere it either doesn't work the way we need it to (e.g. OSX, FreeBSD) or hasn't been tested adequately.

config.h.in

@@ -81,6 +81,9 @@
 /* Define to 1 if you have the <syslog.h> header file. */
 #undef HAVE_SYSLOG_H
 
+/* Define to 1 if you have the <sys/fs/vx_ioctl.h> header file. */
+#undef HAVE_SYS_FS_VX_IOCTL_H
+
 /* Define to 1 if you have the <sys/mount.h> header file. */
 #undef HAVE_SYS_MOUNT_H
 

configure

@@ -5733,6 +5733,18 @@ fi
 
 done
 
+for ac_header in sys/fs/vx_ioctl.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "sys/fs/vx_ioctl.h" "ac_cv_header_sys_fs_vx_ioctl_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_fs_vx_ioctl_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SYS_FS_VX_IOCTL_H 1
+_ACEOF
+
+fi
+
+done
+
 
 CPPFLAGS_SAVE="${CPPFLAGS}"
 CPPFLAGS="${CPPFLAGS} -Werror"

configure.ac

@@ -71,6 +71,7 @@ AC_CHECK_HEADERS(sys/ustat.h sys/sysmacros.h sys/syslog.h sys/socket.h)
 AC_CHECK_HEADERS(unistd.h syslog.h langinfo.h sys/statfs.h sys/select.h)
 AC_CHECK_HEADERS(signum.h bits/signum.h, break )
 AC_CHECK_HEADERS(stdarg.h varargs.h, break )
+AC_CHECK_HEADERS(sys/fs/vx_ioctl.h)
 
 dnl # Special case for malloc.h, because it's depreciated on most systems.
 CPPFLAGS_SAVE="${CPPFLAGS}"

src/core/file_unix.cpp

@@ -53,7 +53,7 @@
 #include <fcntl.h>
 #include <errno.h>
 
-#if IS_HPUX
+#if HAVE_SYS_FS_VX_IOCTL_H
 # include <sys/fs/vx_ioctl.h>
 #endif
 
@@ -235,25 +235,23 @@ void cFile::Open( const TSTRING& sFileNameC, uint32 flags )
 #if IS_SOLARIS
     if ((flags & OPEN_DIRECT) && (flags & OPEN_SCANNING))
         directio(fh, DIRECTIO_ON);
-    
-#elif IS_HPUX
-    if (flags & OPEN_SCANNING) 
-    {
-        if (flags & OPEN_DIRECT)
-            ioctl(fh, VX_SETCACHE, VX_DIRECT);
-        else
-            ioctl(fh, VX_SETCACHE, VX_SEQ | VX_NOREUSE); 
-    }
-
 #endif
-
-
-#ifdef HAVE_POSIX_FADVISE
+    
+#if HAVE_POSIX_FADVISE
     if (flags & OPEN_SCANNING && !(flags & OPEN_DIRECT)) 
     {
         posix_fadvise(fh,0,0, POSIX_FADV_SEQUENTIAL);
         posix_fadvise(fh,0,0, POSIX_FADV_NOREUSE);
     }
+    
+#elif HAVE_SYS_FS_VX_IOCTL_H
+    if (flags & OPEN_SCANNING)
+    {
+        if (flags & OPEN_DIRECT)
+            ioctl(fh, VX_SETCACHE, VX_DIRECT);
+        else
+            ioctl(fh, VX_SETCACHE, VX_SEQ | VX_NOREUSE);
+    }
 #endif
     
 }

src/core/platform.h

@@ -301,6 +301,7 @@
 #define USES_MBLEN                  (!IS_ANDROID && !IS_AROS)
 #define USES_DEVICE_PATH            (IS_AROS || IS_DOS_DJGPP)
 #define ICONV_CONST_SOURCE          (IS_MINIX)
+#define SUPPORTS_DIRECT_IO          (IS_LINUX) // Others may work, but only tested & verified on Linux so far.
 
 
 

src/tripwire/mailmessage.h

@@ -60,6 +60,7 @@ TSS_EXCEPTION( eMailSMTPSocket, eMailMessageError );
 TSS_EXCEPTION( eMailSMTPOpenConnection, eMailMessageError );
 TSS_EXCEPTION( eMailSMTPCloseConnection, eMailMessageError );
 TSS_EXCEPTION( eMailSMTPServer, eMailMessageError );
+TSS_EXCEPTION( eMailSMTPNotSupported, eMailMessageError);
 
 // piped
 TSS_EXCEPTION( eMailPipedOpen, eMailMessageError );

src/tripwire/tripwireerrors.cpp

@@ -59,7 +59,7 @@ TSS_REGISTER_ERROR( eMailSMTPSocket(),              _T("Socket for an SMTP conne
 TSS_REGISTER_ERROR( eMailSMTPOpenConnection(),      _T("The SMTP connection could not be established.") );
 TSS_REGISTER_ERROR( eMailSMTPCloseConnection(),     _T("The SMTP connection could not be properly closed.") );
 TSS_REGISTER_ERROR( eMailSMTPServer(),              _T("The SMTP server returned an error.") );
-
+TSS_REGISTER_ERROR( eMailSMTPNotSupported(),        _T("SMTP email is not supported on this platform") );
 // Piped
 TSS_REGISTER_ERROR( eMailPipedOpen(),               _T("Problem opening mail pipe.") );
 TSS_REGISTER_ERROR( eMailPipedWrite(),              _T("Problem writing to mail pipe.") );
@@ -99,4 +99,7 @@ TSS_REGISTER_ERROR( eTWInvalidReportLevelCfg(),     _T("Invalid reporting level
 TSS_REGISTER_ERROR( eTWInvalidPortNumber(),         _T("Invalid SMTP port number.\nValid ports: [0-65535]\n") );
 TSS_REGISTER_ERROR( eTWInvalidTempDirectory(),      _T("Cannot access temp directory.") );
 
+TSS_REGISTER_ERROR( eTWSyslogNotSupported(),        _T("Syslog reporting is not supported on this platform.") );
+TSS_REGISTER_ERROR( eTWDirectIONotSupported(),      _T("Direct I/O hashing is not supported on this platform.") );
+                   
 TSS_END_ERROR_REGISTRATION()

src/tripwire/twcmdline.cpp

@@ -72,6 +72,7 @@
 #include "integritycheck.h"
 #include "updatedb.h"
 #include "policyupdate.h"
+#include "core/platform.h"
 
 #ifdef TW_PROFILE
 #include "tasktimer.h"
@@ -377,6 +378,11 @@ static void FillOutConfigInfo(cTWModeCommon* pModeInfo, const cConfigFile& cf)
       pModeInfo->mMailMethod = cMailMessage::NO_METHOD;
     }
 
+#if !SUPPORTS_NETWORKING
+    if (pModeInfo->mMailMethod == cMailMessage::MAIL_BY_SMTP)
+        throw eMailSMTPNotSupported();
+#endif
+    
   // Get the SMTP server
   if(cf.Lookup(TSTRING(_T("SMTPHOST")), str))
     pModeInfo->mSmtpHost = str;
@@ -417,10 +423,14 @@ static void FillOutConfigInfo(cTWModeCommon* pModeInfo, const cConfigFile& cf)
   // SYSLOG reporting
   if(cf.Lookup(TSTRING(_T("SYSLOGREPORTING")), str))
     {
+#if SUPPORTS_SYSLOG
       if (_tcsicmp(str.c_str(), _T("true")) == 0)
         pModeInfo->mbLogToSyslog = true;
       else
         pModeInfo->mbLogToSyslog = false;
+#else
+        throw eTWSyslogNotSupported();
+#endif
     }
   else
     pModeInfo->mbLogToSyslog = false;
@@ -437,17 +447,24 @@ static void FillOutConfigInfo(cTWModeCommon* pModeInfo, const cConfigFile& cf)
 	int blocks = 0;
     if (cf.Lookup(TSTRING(_T("HASH_DIRECT_IO")), str))
     {
+#if SUPPORTS_DIRECT_IO
         if (_tcsicmp(str.c_str(), _T("true")) == 0)
         {
             pModeInfo->mbDirectIO = true;
             cArchiveSigGen::SetUseDirectIO(true);
 			blocks = 1;
         }
+#else
+        throw eTWDirectIONotSupported();
+#endif
+        
     }
     
     if (cf.Lookup(TSTRING(_T("HASH_BLOCKS")), str))
     {
-        blocks = _ttoi( str.c_str() );
+        int requested_blocks = _ttoi(str.c_str());
+        if (requested_blocks > 0)
+            blocks = requested_blocks;
     }
 
     if( blocks > 0 )

src/tripwire/twcmdline.h

@@ -76,6 +76,9 @@ TSS_EXCEPTION( eTWInvalidPortNumber,      eError );
 TSS_EXCEPTION( eTWPassForUnencryptedDb,   eError );
 TSS_EXCEPTION( eTWInvalidTempDirectory,   eError );
 
+TSS_EXCEPTION( eTWSyslogNotSupported,     eError );
+TSS_EXCEPTION( eTWDirectIONotSupported,   eError );
+
 ///////////////////////////////////////////////////////////////////////////////
 // cTWCmdLine -- class with a bunch of static member functions helpful in parsing
 //    the tripwire command line