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/* ========================================================================== **
* debug2html.c
*
* Copyright (C) 1998 by Christopher R. Hertel
*
* Email: crh@ubiqx.mn.org
*
* -------------------------------------------------------------------------- **
* Parse Samba debug logs (2.0 & greater) and output the results as HTML.
* -------------------------------------------------------------------------- **
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* -------------------------------------------------------------------------- **
* This program provides an example of the use of debugparse.c, and also
* does a decent job of converting Samba logs into HTML.
* -------------------------------------------------------------------------- **
*
* $Revision: 1.7 $
*
* ========================================================================== **
*/
#include "includes.h"
/* -------------------------------------------------------------------------- **
* Global values.
*/
FILE *infile = stdin;
FILE *outfile = stdout;
/* -------------------------------------------------------------------------- **
* The size of the read buffer.
*/
#define DBG_BSIZE 1024
/* -------------------------------------------------------------------------- **
* Functions...
*/
static dbg_Token modechange( dbg_Token new, dbg_Token mode )
/* ------------------------------------------------------------------------ **
* Handle a switch between header and message printing.
*
* Input: new - The token value of the current token. This indicates
* the lexical item currently being recognized.
* mode - The current mode. This is either dbg_null or
* dbg_message. It could really be any toggle
* (true/false, etc.)
*
* Output: The new mode. This will be the same as the input mode unless
* there was a transition in or out of message processing.
*
* Notes: The purpose of the mode value is to mark the beginning and end
* of the message text block. In order to show the text in its
* correct format, it must be included within a <PRE></PRE> block.
*
* ------------------------------------------------------------------------ **
*/
{
switch( new )
{
case dbg_null:
case dbg_ignore:
return( mode );
case dbg_message:
if( dbg_message != mode )
{
/* Switching to message mode. */
(void)fprintf( outfile, "<PRE>\n" );
return( dbg_message );
}
break;
default:
if( dbg_message == mode )
{
/* Switching out of message mode. */
(void)fprintf( outfile, "</PRE>\n\n" );
return( dbg_null );
}
}
return( mode );
} /* modechange */
static void newblock( dbg_Token old, dbg_Token new )
/* ------------------------------------------------------------------------ **
* Handle the transition between tokens.
*
* Input: old - The previous token.
* new - The current token.
*
* Output: none.
*
* Notes: This is called whenever there is a transition from one token
* type to another. It first prints the markup tags that close
* the previous token, and then the markup tags for the new
* token.
*
* ------------------------------------------------------------------------ **
*/
{
switch( old )
{
case dbg_timestamp:
(void)fprintf( outfile, ",</B>" );
break;
case dbg_level:
(void)fprintf( outfile, "</FONT>]</B>\n " );
break;
case dbg_sourcefile:
(void)fprintf( outfile, ":" );
break;
case dbg_lineno:
(void)fprintf( outfile, ")" );
break;
}
switch( new )
{
case dbg_timestamp:
(void)fprintf( outfile, "<B>[" );
break;
case dbg_level:
(void)fprintf( outfile, " <B><FONT COLOR=MAROON>" );
break;
case dbg_lineno:
(void)fprintf( outfile, "(" );
break;
}
} /* newblock */
static void charprint( dbg_Token tok, int c )
/* ------------------------------------------------------------------------ **
* Filter the input characters to determine what goes to output.
*
* Input: tok - The token value of the current character.
* c - The current character.
*
* Output: none.
*
* ------------------------------------------------------------------------ **
*/
{
switch( tok )
{
case dbg_ignore:
case dbg_header:
break;
case dbg_null:
case dbg_eof:
(void)putc( '\n', outfile );
break;
default:
switch( c )
{
case '<':
(void)fprintf( outfile, "<" );
break;
case '>':
(void)fprintf( outfile, ">" );
break;
case '&':
(void)fprintf( outfile, "&" );
break;
case '\"':
(void)fprintf( outfile, """ );
break;
default:
(void)putc( c, outfile );
break;
}
}
} /* charprint */
static void convert( void )
/* ------------------------------------------------------------------------ **
* Read the input logfile, converting the entries to HTML.
*
* Input: none.
* output: none.
* Notes: Reads from the global infile, writes to the global outfile.
* These default to stdin and stdout, respectively.
*
* ------------------------------------------------------------------------ **
*/
{
int i;
int len;
char bufr[DBG_BSIZE];
dbg_Token old = dbg_null,
new = dbg_null,
state = dbg_null,
mode = dbg_null;
while( (!feof( infile ))
&& ((len = fread( bufr, 1, DBG_BSIZE, infile )) > 0) )
{
for( i = 0; i < len; i++ )
{
old = new;
new = dbg_char2token( &state, bufr[i] );
if( new != old )
{
mode = modechange( new, mode );
newblock( old, new );
}
charprint( new, bufr[i] );
}
}
(void)modechange( dbg_eof, mode );
} /* convert */
static void usage( void )
/* ------------------------------------------------------------------------ **
* Prints a usage message on stderr, then gently exits.
*
* Input: none.
* Output: none. Exits with return code of 0.
*
* ------------------------------------------------------------------------ **
*/
{
fprintf( stderr, "This utility converts Samba log files " );
fprintf( stderr, "into HTML documents.\n" );
fprintf( stderr, "Usage:\n" );
fprintf( stderr, " debug2html <infile> <outfile>\n" );
exit( 0 );
} /* usage */
static FILE *carefull_fopen( const char *path, const char *type )
/* ------------------------------------------------------------------------ **
* Checks for leading '-' characters, which are generically regarded as
* flags. Also exits the program gracefully should the file fail to open.
*
* Input: path - pathname of the file to open.
* type - open mode. See fopen(3S).
*
* Output: Pointer to open file.
*
* ------------------------------------------------------------------------ **
*/
{
FILE *tmp;
if( '-' == path[0] || '\0' == path[0] )
usage();
tmp = sys_fopen( path, type );
if( NULL == tmp )
{
fprintf( stderr, "Error opening file %s: %s\n", path, strerror(errno) );
exit( 1 );
}
return( tmp );
} /* carefull_fopen */
int main( int argc, char *argv[] )
/* ------------------------------------------------------------------------ **
* This simple program scans and parses Samba debug logs, and produces HTML
* output.
*
* Input: argc - Argument count.
* argv[1] - Input file name.
* argv[2] - Output file name.
* A '-' character by itself means use defaults (i.e.,
* <stdin> or <stdout> depending upon the argument.
* A string beginning with '-' and containing more than
* that one character will generate a usage message.
*
* Output: An exit value of 1 is returned if an error was encountered
* while opening a file, else 0.
*
* Notes: The HTML output is sent to stdout.
*
* ------------------------------------------------------------------------ **
*/
{
if( argc > 3 )
usage();
if( argc > 1 && 0 != strcmp( argv[1], "-" ) )
infile = carefull_fopen( argv[1], "r" );
if( argc > 2 && 0 != strcmp( argv[2], "-" ) )
infile = carefull_fopen( argv[2], "w" );
(void)fprintf( outfile,
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n" );
(void)fprintf( outfile, "<HTML>\n<HEAD>\n" );
(void)fprintf( outfile,
" <TITLE>Samba Log</TITLE>\n</HEAD>\n\n<BODY>\n" );
convert();
(void)fprintf( outfile, "</BODY>\n</HTML>\n" );
return( 0 );
} /* main */
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