-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- Parameter loading utlities
- Copyright (C) Karl Auer 1993,1994
-
- 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.
-*/
-
-/**************************************************************************
-PARAMS.C
-
-Copyright (C) 1990, 1991, 1992, 1993, 1994 Karl Auer
-
-This module provides for streamlines retrieval of information from a
-Windows-like parameter files. There is a function which will search for
-all sections in the file and call a specified function with each. There is
-a similar function which will call a specified function for all parameters
-in a section. The idea is that you pass the addresses of suitable functions
-to a single function in this module which will then enumerate all sections,
-and within each section all parameters, to your program.
-
-Parameter files contain text lines (newline delimited) which consist of
-either a section name in square brackets or a parameter name, delimited
-from the parameter value by an equals sign. Blank lines or lines where the
-first non-whitespace character is a colon are ignored. All whitespace in
-section names and parameter names is compressed to single spaces. Leading
-and trailing whitespace on parameter names and parameter values is stripped.
-
-Only the first equals sign in a parameter line is significant - parameter
-values may contain equals signs, square brackets and semicolons. Internal
-whitespace is retained in parameter values. Parameter names may not start
-with a square bracket, an equals sign or a semicolon, for obvious reasons.
-
-A sample parameter file might look like this:
-
-[things]
-this=1
-that=2
-[other things]
-the other = 3
-
-**************************************************************************/
+/* -------------------------------------------------------------------------- **
+ * Microsoft Network Services for Unix, AKA., Andrew Tridgell's SAMBA.
+ *
+ * This module Copyright (C) 1990, 1991, 1992, 1993, 1994 Karl Auer
+ *
+ * Rewritten almost completely by Christopher R. Hertel
+ * at the University of Minnesota, September, 1997.
+ * This module Copyright (C) 1997 by the University of Minnesota
+ * -------------------------------------------------------------------------- **
+ *
+ * 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.
+ *
+ * -------------------------------------------------------------------------- **
+ *
+ * Module name: params
+ *
+ * -------------------------------------------------------------------------- **
+ *
+ * This module performs lexical analysis and initial parsing of a
+ * Windows-like parameter file. It recognizes and handles four token
+ * types: section-name, parameter-name, parameter-value, and
+ * end-of-file. Comments and line continuation are handled
+ * internally.
+ *
+ * The entry point to the module is function pm_process(). This
+ * function opens the source file, calls the Parse() function to parse
+ * the input, and then closes the file when either the EOF is reached
+ * or a fatal error is encountered.
+ *
+ * A sample parameter file might look like this:
+ *
+ * [section one]
+ * parameter one = value string
+ * parameter two = another value
+ * [section two]
+ * new parameter = some value or t'other
+ *
+ * The parameter file is divided into sections by section headers:
+ * section names enclosed in square brackets (eg. [section one]).
+ * Each section contains parameter lines, each of which consist of a
+ * parameter name and value delimited by an equal sign. Roughly, the
+ * syntax is:
+ *
+ * <file> :== { <section> } EOF
+ *
+ * <section> :== <section header> { <parameter line> }
+ *
+ * <section header> :== '[' NAME ']'
+ *
+ * <parameter line> :== NAME '=' VALUE '\n'
+ *
+ * Blank lines and comment lines are ignored. Comment lines are lines
+ * beginning with either a semicolon (';') or a pound sign ('#').
+ *
+ * All whitespace in section names and parameter names is compressed
+ * to single spaces. Leading and trailing whitespace is stipped from
+ * both names and values.
+ *
+ * Only the first equals sign in a parameter line is significant.
+ * Parameter values may contain equals signs, square brackets and
+ * semicolons. Internal whitespace is retained in parameter values,
+ * with the exception of the '\r' character, which is stripped for
+ * historic reasons. Parameter names may not start with a left square
+ * bracket, an equal sign, a pound sign, or a semicolon, because these
+ * are used to identify other tokens.
+ *
+ * -------------------------------------------------------------------------- **
+ */
#include "includes.h"
-#include "smb.h"
-#include "params.h"
+/* -------------------------------------------------------------------------- **
+ * Constants...
+ */
+
+#define BUFR_INC 1024
+
+
+/* -------------------------------------------------------------------------- **
+ * Variables...
+ *
+ * DEBUGLEVEL - The ubiquitous DEBUGLEVEL. This determines which DEBUG()
+ * messages will be produced.
+ * bufr - pointer to a global buffer. This is probably a kludge,
+ * but it was the nicest kludge I could think of (for now).
+ * bSize - The size of the global buffer <bufr>.
+ */
-/* local variable pointing to passed filename */
-static char *pszParmFile = NULL;
extern int DEBUGLEVEL;
-/* local prototypes */
-static BOOL enumerate_parameters(FILE *infile, PM_PARMFUNC pfunc);
-static BOOL enumerate_sections(FILE *infile,
- PM_SECFUNC sfunc, PM_PARMFUNC pfunc);
-
-/* prototypes for local toolbox functions */
-static void trimleft(char *psz);
-static void trimright(char *psz);
-static void collapse_spaces(char *psz);
-static int firstnonwhite(char *psz);
-
-/**************************************************************************
-Identifies all parameters in the current section, calls the parameter
-function for each. Ignores comment lines, stops and backs up in file when
-a section is encountered. Returns True on success, False on error.
-**************************************************************************/
-static BOOL enumerate_parameters(FILE *fileIn, PM_PARMFUNC pfunc)
-{
- pstring szBuf;
- char *pszTemp;
- BOOL bRetval;
- long lFileOffset;
- int cTemp;
- BOOL bParmFound;
-
- bRetval = False;
- bParmFound = False;
- while (True)
- {
- /* first remember where we are */
- if ((lFileOffset = ftell(fileIn)) >= 0L)
+static char *bufr = NULL;
+static int bSize = 0;
+
+/* -------------------------------------------------------------------------- **
+ * Functions...
+ */
+
+static int EatWhitespace( FILE *InFile )
+ /* ------------------------------------------------------------------------ **
+ * Scan past whitespace (see ctype(3C)) and return the first non-whitespace
+ * character, or newline, or EOF.
+ *
+ * Input: InFile - Input source.
+ *
+ * Output: The next non-whitespace character in the input stream.
+ *
+ * Notes: Because the config files use a line-oriented grammar, we
+ * explicitly exclude the newline character from the list of
+ * whitespace characters.
+ * - Note that both EOF (-1) and the nul character ('\0') are
+ * considered end-of-file markers.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ int c;
+
+ for( c = getc( InFile ); isspace( c ) && ('\n' != c); c = getc( InFile ) )
+ ;
+ return( c );
+ } /* EatWhitespace */
+
+static int EatComment( FILE *InFile )
+ /* ------------------------------------------------------------------------ **
+ * Scan to the end of a comment.
+ *
+ * Input: InFile - Input source.
+ *
+ * Output: The character that marks the end of the comment. Normally,
+ * this will be a newline, but it *might* be an EOF.
+ *
+ * Notes: Because the config files use a line-oriented grammar, we
+ * explicitly exclude the newline character from the list of
+ * whitespace characters.
+ * - Note that both EOF (-1) and the nul character ('\0') are
+ * considered end-of-file markers.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ int c;
+
+ for( c = getc( InFile ); ('\n'!=c) && (EOF!=c) && (c>0); c = getc( InFile ) )
+ ;
+ return( c );
+ } /* EatComment */
+
+static int Continuation( char *line, int pos )
+ /* ------------------------------------------------------------------------ **
+ * Scan backards within a string to discover if the last non-whitespace
+ * character is a line-continuation character ('\\').
+ *
+ * Input: line - A pointer to a buffer containing the string to be
+ * scanned.
+ * pos - This is taken to be the offset of the end of the
+ * string. This position is *not* scanned.
+ *
+ * Output: The offset of the '\\' character if it was found, or -1 to
+ * indicate that it was not.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ pos--;
+ while( (pos >= 0) && isspace(line[pos]) )
+ pos--;
+
+ return( ((pos >= 0) && ('\\' == line[pos])) ? pos : -1 );
+ } /* Continuation */
+
+
+static BOOL Section( FILE *InFile, BOOL (*sfunc)(char *) )
+ /* ------------------------------------------------------------------------ **
+ * Scan a section name, and pass the name to function sfunc().
+ *
+ * Input: InFile - Input source.
+ * sfunc - Pointer to the function to be called if the section
+ * name is successfully read.
+ *
+ * Output: True if the section name was read and True was returned from
+ * <sfunc>. False if <sfunc> failed or if a lexical error was
+ * encountered.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ int c;
+ int i;
+ int end;
+ char *func = "params.c:Section() -";
+
+ i = 0; /* <i> is the offset of the next free byte in bufr[] and */
+ end = 0; /* <end> is the current "end of string" offset. In most */
+ /* cases these will be the same, but if the last */
+ /* character written to bufr[] is a space, then <end> */
+ /* will be one less than <i>. */
+
+ c = EatWhitespace( InFile ); /* We've already got the '['. Scan */
+ /* past initial white space. */
+
+ while( (EOF != c) && (c > 0) )
+ {
+
+ /* Check that the buffer is big enough for the next character. */
+ if( i > (bSize - 2) )
{
- /* then get and check a line */
- if (fgets_slash(szBuf, sizeof(szBuf)-1, fileIn) == NULL)
- {
- /* stop - return OK unless file error */
- bRetval = !ferror(fileIn);
- if (!bRetval)
- DEBUG(0,( "Read error on configuration file (enumerating parameters)!\n"));
- break;
- }
- else
- /* if first non-white is a '[', stop (new section) */
- if ((cTemp = firstnonwhite(szBuf)) == '[')
- {
- /* restore position to start of new section */
- if (fseek(fileIn, lFileOffset, SEEK_SET) < 0L)
- {
- DEBUG(0,( "Seek error on configuration file!\n"));
- break;
- }
-
- /* return success */
- bRetval = True;
- break;
- }
- else
- /* if it's a semicolon or line is blank, ignore the line */
- if (!cTemp || strchr(";#",cTemp))
- {
- continue;
- }
- else
- /* if no equals sign and line contains non-whitespace */
- /* then line is badly formed */
- if ((pszTemp = strchr(szBuf, '=')) == NULL)
- {
- DEBUG(0,( "Ignoring badly formed line: %s", szBuf));
- }
- else
- {
- /* Note that we have found a parameter */
- bParmFound = True;
- /* cut line at the equals sign */
- *pszTemp++ = '\0';
- /* trim leading and trailing space from both halves */
- trimright(szBuf);
- trimleft(szBuf);
- trimright(pszTemp);
- trimleft(pszTemp);
- /* process the parameter iff passed pointer not NULL */
- if (pfunc != NULL)
- if (!pfunc(szBuf, pszTemp))
- break;
- }
+ bSize += BUFR_INC;
+ bufr = Realloc( bufr, bSize );
+ if( NULL == bufr )
+ {
+ DEBUG(0, ("%s Memory re-allocation failure.", func) );
+ return( False );
+ }
}
- }
- return (bRetval);
-}
-
-
-/***********************************************************************
-Close up s by n chars, at offset start.
-***********************************************************************/
-static void closestr(char *s, int start, int n)
-{
- char *src;
- char *dest;
- int len;
-
- if (n > 0)
- if ((src = dest = s) != NULL)
+
+ /* Handle a single character. */
+ switch( c )
{
- len = strlen(s);
- if (start >= 0 && start < len - n)
- {
- src += start + n;
- dest += start;
-
- while (*src)
- *dest++ = *src++;
- *dest = '\0';
- }
+ case ']': /* Found the closing bracket. */
+ bufr[end] = '\0';
+ if( 0 == end ) /* Don't allow an empty name. */
+ {
+ DEBUG(0, ("%s Empty section name in configuration file.\n", func ));
+ return( False );
+ }
+ if( !sfunc( bufr ) ) /* Got a valid name. Deal with it. */
+ return( False );
+ (void)EatComment( InFile ); /* Finish off the line. */
+ return( True );
+
+ case '\n': /* Got newline before closing ']'. */
+ i = Continuation( bufr, i ); /* Check for line continuation. */
+ if( i < 0 )
+ {
+ bufr[end] = '\0';
+ DEBUG(0, ("%s Badly formed line in configuration file: %s\n",
+ func, bufr ));
+ return( False );
+ }
+ end = ( (i > 0) && (' ' == bufr[i - 1]) ) ? (i - 1) : (i);
+ c = getc( InFile ); /* Continue with next line. */
+ break;
+
+ default: /* All else are a valid name chars. */
+ if( isspace( c ) ) /* One space per whitespace region. */
+ {
+ bufr[end] = ' ';
+ i = end + 1;
+ c = EatWhitespace( InFile );
+ }
+ else /* All others copy verbatim. */
+ {
+ bufr[i++] = c;
+ end = i;
+ c = getc( InFile );
+ }
}
-}
-
-/**************************************************************************
-Identifies all sections in the parameter file, calls passed section_func()
-for each, passing the section name, then calls enumerate_parameters().
-Returns True on success, False on failure. Note that the section and
-parameter names will have all internal whitespace areas collapsed to a
-single space for processing.
-**************************************************************************/
-static BOOL enumerate_sections(FILE *fileIn,
- PM_SECFUNC sfunc, PM_PARMFUNC pfunc)
-{
- pstring szBuf;
- BOOL bRetval;
- BOOL bSectionFound;
-
- /* this makes sure we get include lines right */
- enumerate_parameters(fileIn, pfunc);
-
- bRetval = False;
- bSectionFound = False;
- while (True)
- {
- if (fgets_slash(szBuf, sizeof(szBuf)-1, fileIn) == NULL)
+ }
+
+ /* We arrive here if we've met the EOF before the closing bracket. */
+ DEBUG(0, ("%s Unexpected EOF in the configuration file: %s\n", func, bufr ));
+ return( False );
+ } /* Section */
+
+static BOOL Parameter( FILE *InFile, BOOL (*pfunc)(char *, char *), int c )
+ /* ------------------------------------------------------------------------ **
+ * Scan a parameter name and value, and pass these two fields to pfunc().
+ *
+ * Input: InFile - The input source.
+ * pfunc - A pointer to the function that will be called to
+ * process the parameter, once it has been scanned.
+ * c - The first character of the parameter name, which
+ * would have been read by Parse(). Unlike a comment
+ * line or a section header, there is no lead-in
+ * character that can be discarded.
+ *
+ * Output: True if the parameter name and value were scanned and processed
+ * successfully, else False.
+ *
+ * Notes: This function is in two parts. The first loop scans the
+ * parameter name. Internal whitespace is compressed, and an
+ * equal sign (=) terminates the token. Leading and trailing
+ * whitespace is discarded. The second loop scans the parameter
+ * value. When both have been successfully identified, they are
+ * passed to pfunc() for processing.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ int i = 0; /* Position within bufr. */
+ int end = 0; /* bufr[end] is current end-of-string. */
+ int vstart = 0; /* Starting position of the parameter value. */
+ char *func = "params.c:Parameter() -";
+
+ /* Read the parameter name. */
+ while( 0 == vstart ) /* Loop until we've found the start of the value. */
+ {
+
+ if( i > (bSize - 2) ) /* Ensure there's space for next char. */
{
- /* stop - return OK unless file error */
- bRetval = !ferror(fileIn);
- if (!bRetval)
- DEBUG(0,( "Read error on configuration file (enumerating sections)!\n"));
- break;
+ bSize += BUFR_INC;
+ bufr = Realloc( bufr, bSize );
+ if( NULL == bufr )
+ {
+ DEBUG(0, ("%s Memory re-allocation failure.", func) );
+ return( False );
+ }
}
- else
+
+ switch( c )
{
- trimleft(szBuf);
- trimright(szBuf);
- if (szBuf[0] == '[')
- {
- closestr(szBuf, 0, 1);
- if (strlen(szBuf) > 1)
- if (szBuf[strlen(szBuf) - 1] == ']')
- {
- /* found a section - note the fact */
- bSectionFound = True;
- /* remove trailing metabracket */
- szBuf[strlen(szBuf) - 1] = '\0';
- /* remove leading and trailing whitespace from name */
- trimleft(szBuf);
- trimright(szBuf);
- /* reduce all internal whitespace to one space */
- collapse_spaces(szBuf);
- /* process it - stop if the processing fails */
- if (sfunc != NULL)
- if (!sfunc(szBuf))
- break;
- if (!enumerate_parameters(fileIn, pfunc))
- break;
- }
- }
+ case '=': /* Equal sign marks end of param name. */
+ if( 0 == end ) /* Don't allow an empty name. */
+ {
+ DEBUG(0, ("%s Invalid parameter name in config. file.\n", func ));
+ return( False );
+ }
+ bufr[end++] = '\0'; /* Mark end of string & advance. */
+ i = end; /* New string starts here. */
+ vstart = end; /* New string is parameter value. */
+ bufr[i] = '\0'; /* New string is nul, for now. */
+ break;
+
+ case '\n': /* Find continuation char, else error. */
+ i = Continuation( bufr, i );
+ if( i < 0 )
+ {
+ bufr[end] = '\0';
+ DEBUG(1,("%s Ignoring badly formed line in configuration file: %s\n",
+ func, bufr ));
+ return( True );
+ }
+ end = ( (i > 0) && (' ' == bufr[i - 1]) ) ? (i - 1) : (i);
+ c = getc( InFile ); /* Read past eoln. */
+ break;
+
+ case '\0': /* Shouldn't have EOF within param name. */
+ case EOF:
+ bufr[i] = '\0';
+ DEBUG(1,("%s Unexpected end-of-file at: %s\n", func, bufr ));
+ return( True );
+
+ default:
+ if( isspace( c ) ) /* One ' ' per whitespace region. */
+ {
+ bufr[end] = ' ';
+ i = end + 1;
+ c = EatWhitespace( InFile );
+ }
+ else /* All others verbatim. */
+ {
+ bufr[i++] = c;
+ end = i;
+ c = getc( InFile );
+ }
}
- }
-
- return (bRetval);
-}
-
-/**************************************************************************
-Process the passed parameter file.
+ }
-Returns True if successful, else False.
-**************************************************************************/
-BOOL pm_process(char *pszFileName, PM_SECFUNC sfunc, PM_PARMFUNC pfunc)
-{
- FILE *fileIn;
- BOOL bRetval;
+ /* Now parse the value. */
+ c = EatWhitespace( InFile ); /* Again, trim leading whitespace. */
+ while( (EOF !=c) && (c > 0) )
+ {
- bRetval = False;
-
- /* record the filename for use in error messages one day... */
- pszParmFile = pszFileName;
-
- if (pszParmFile == NULL || strlen(pszParmFile) < 1)
- DEBUG(0,( "No configuration filename specified!\n"));
- else
- if ((fileIn = fopen(pszParmFile, "r")) == NULL)
- DEBUG(0,( "Unable to open configuration file \"%s\"!\n", pszParmFile));
- else
+ if( i > (bSize - 2) ) /* Make sure there's enough room. */
{
- DEBUG(2,( "Processing configuration file \"%s\"\n", pszParmFile));
- bRetval = enumerate_sections(fileIn, sfunc, pfunc);
- fclose(fileIn);
+ bSize += BUFR_INC;
+ bufr = Realloc( bufr, bSize );
+ if( NULL == bufr )
+ {
+ DEBUG(0, ("%s Memory re-allocation failure.", func) );
+ return( False );
+ }
}
- if (!bRetval)
- DEBUG(0,("pm_process retuned false\n"));
- return (bRetval);
-}
-
-
-/**************************************************************************
-Strip all leading whitespace from a string.
-**************************************************************************/
-static void trimleft(char *psz)
-{
- char *pszDest;
-
- pszDest = psz;
- if (psz != NULL)
- {
- while (*psz != '\0' && isspace(*psz))
- psz++;
- while (*psz != '\0')
- *pszDest++ = *psz++;
- *pszDest = '\0';
- }
-}
-
-/**************************************************************************
-Strip all trailing whitespace from a string.
-**************************************************************************/
-static void trimright(char *psz)
-{
- char *pszTemp;
-
- if (psz != NULL && psz[0] != '\0')
- {
- pszTemp = psz + strlen(psz) - 1;
- while (isspace(*pszTemp))
- *pszTemp-- = '\0';
- }
-}
-
-/***********************************************************************
-Collapse each whitespace area in a string to a single space.
-***********************************************************************/
-static void collapse_spaces(char *psz)
-{
- while (*psz)
- if (isspace(*psz))
+ switch( c )
+ {
+ case '\r': /* Explicitly remove '\r' because the older */
+ c = getc( InFile ); /* version called fgets_slash() which also */
+ break; /* removes them. */
+
+ case '\n': /* Marks end of value unless there's a '\'. */
+ i = Continuation( bufr, i );
+ if( i < 0 )
+ c = 0;
+ else
+ {
+ for( end = i; (end >= 0) && isspace(bufr[end]); end-- )
+ ;
+ c = getc( InFile );
+ }
+ break;
+
+ default: /* All others verbatim. Note that spaces do */
+ bufr[i++] = c; /* not advance <end>. This allows trimming */
+ if( !isspace( c ) ) /* of whitespace at the end of the line. */
+ end = i;
+ c = getc( InFile );
+ break;
+ }
+ }
+ bufr[end] = '\0'; /* End of value. */
+
+ return( pfunc( bufr, &bufr[vstart] ) ); /* Pass name & value to pfunc(). */
+ } /* Parameter */
+
+static BOOL Parse( FILE *InFile,
+ BOOL (*sfunc)(char *),
+ BOOL (*pfunc)(char *, char *) )
+ /* ------------------------------------------------------------------------ **
+ * Scan & parse the input.
+ *
+ * Input: InFile - Input source.
+ * sfunc - Function to be called when a section name is scanned.
+ * See Section().
+ * pfunc - Function to be called when a parameter is scanned.
+ * See Parameter().
+ *
+ * Output: True if the file was successfully scanned, else False.
+ *
+ * Notes: The input can be viewed in terms of 'lines'. There are four
+ * types of lines:
+ * Blank - May contain whitespace, otherwise empty.
+ * Comment - First non-whitespace character is a ';' or '#'.
+ * The remainder of the line is ignored.
+ * Section - First non-whitespace character is a '['.
+ * Parameter - The default case.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ int c;
+
+ c = EatWhitespace( InFile );
+ while( (EOF != c) && (c > 0) )
+ {
+ switch( c )
+ {
+ case '\n': /* Blank line. */
+ c = EatWhitespace( InFile );
+ break;
+
+ case ';': /* Comment line. */
+ case '#':
+ c = EatComment( InFile );
+ break;
+
+ case '[': /* Section Header. */
+ if( !Section( InFile, sfunc ) )
+ return( False );
+ c = EatWhitespace( InFile );
+ break;
+
+ case '\\': /* Bogus backslash. */
+ c = EatWhitespace( InFile );
+ break;
+
+ default: /* Parameter line. */
+ if( !Parameter( InFile, pfunc, c ) )
+ return( False );
+ c = EatWhitespace( InFile );
+ break;
+ }
+ }
+ return( True );
+ } /* Parse */
+
+static FILE *OpenConfFile( char *FileName )
+ /* ------------------------------------------------------------------------ **
+ * Open a configuration file.
+ *
+ * Input: FileName - The pathname of the config file to be opened.
+ *
+ * Output: A pointer of type (FILE *) to the opened file, or NULL if the
+ * file could not be opened.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ FILE *OpenedFile;
+ char *func = "params.c:OpenConfFile() -";
+
+ if( NULL == FileName || 0 == *FileName )
+ {
+ DEBUG( 0, ("%s No configuration filename specified.\n", func) );
+ return( NULL );
+ }
+
+ OpenedFile = fopen( FileName, "r" );
+ if( NULL == OpenedFile )
+ {
+ DEBUG( 0,
+ ("%s Unable to open configuration file \"%s\":\n\t%s\n",
+ func, FileName, strerror(errno)) );
+ }
+
+ return( OpenedFile );
+ } /* OpenConfFile */
+
+BOOL pm_process( char *FileName,
+ BOOL (*sfunc)(char *),
+ BOOL (*pfunc)(char *, char *) )
+ /* ------------------------------------------------------------------------ **
+ * Process the named parameter file.
+ *
+ * Input: FileName - The pathname of the parameter file to be opened.
+ * sfunc - A pointer to a function that will be called when
+ * a section name is discovered.
+ * pfunc - A pointer to a function that will be called when
+ * a parameter name and value are discovered.
+ *
+ * Output: TRUE if the file was successfully parsed, else FALSE.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ int result;
+ FILE *InFile;
+ char *func = "params.c:pm_process() -";
+
+ InFile = OpenConfFile( FileName ); /* Open the config file. */
+ if( NULL == InFile )
+ return( False );
+
+ DEBUG( 3, ("%s Processing configuration file \"%s\"\n", func, FileName) );
+
+ if( NULL != bufr ) /* If we already have a buffer */
+ result = Parse( InFile, sfunc, pfunc ); /* (recursive call), then just */
+ /* use it. */
+
+ else /* If we don't have a buffer */
+ { /* allocate one, then parse, */
+ bSize = BUFR_INC; /* then free. */
+ bufr = (char *)malloc( bSize );
+ if( NULL == bufr )
{
- *psz++ = ' ';
- trimleft(psz);
+ DEBUG(0,("%s memory allocation failure.\n", func));
+ return( False );
}
- else
- psz++;
-}
-
-/**************************************************************************
-Return the value of the first non-white character in the specified string.
-The terminating NUL counts as non-white for the purposes of this function.
-Note - no check for a NULL string! What would we return?
-**************************************************************************/
-static int firstnonwhite(char *psz)
-{
- while (isspace(*psz) && (*psz != '\0'))
- psz++;
- return (*psz);
-}
+ result = Parse( InFile, sfunc, pfunc );
+ free( bufr );
+ bufr = NULL;
+ bSize = 0;
+ }
+
+ if( !result ) /* Generic failure. */
+ {
+ DEBUG(0,("%s Failed. Error returned from params.c:parse().\n", func));
+ return( False );
+ }
+
+ return( True ); /* Generic success. */
+ } /* pm_process */
+
+/* -------------------------------------------------------------------------- */
git.samba.org / kai / samba.git / blobdiff