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/*
Unix SMB/Netbios implementation.
Version 1.9.
printcap parsing
Copyright (C) Karl Auer 1993-1998
Re-working by Martin Kiff, 1994
Re-written again by Andrew Tridgell
Modified for SVID support by Norm Jacobs, 1997
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.
*/
/*
* Parse printcap file.
*
* This module does exactly one thing - it looks into the printcap file
* and tells callers if a specified string appears as a printer name.
*
* The way this module looks at the printcap file is very simplistic.
* Only the local printcap file is inspected (no searching of NIS
* databases etc).
*
* There are assumed to be one or more printer names per record, held
* as a set of sub-fields separated by vertical bar symbols ('|') in the
* first field of the record. The field separator is assumed to be a colon
* ':' and the record separator a newline.
*
* Lines ending with a backspace '\' are assumed to flag that the following
* line is a continuation line so that a set of lines can be read as one
* printcap entry.
*
* A line stating with a hash '#' is assumed to be a comment and is ignored
* Comments are discarded before the record is strung together from the
* set of continuation lines.
*
* Opening a pipe for "lpc status" and reading that would probably
* be pretty effective. Code to do this already exists in the freely
* distributable PCNFS server code.
*
* Modified to call SVID/XPG4 support if printcap name is set to "lpstat"
* in smb.conf under Solaris.
*/
#include "includes.h"
#include "smb.h"
extern int DEBUGLEVEL;
#ifdef AIX
/* ******************************************
Extend for AIX system and qconfig file
from 'boulard@univ-rennes1.fr
****************************************** */
static int strlocate(char *xpLine,char *xpS)
{
int iS,iL,i,iRet;
char *p;
iS = strlen(xpS);
iL = strlen(xpLine);
iRet = 0;
p = xpLine;
while (iL >= iS)
{
if (strncmp(p,xpS,iS) == 0) {iRet =1;break;};
p++;
iL--;
}
/*DEBUG(3,(" strlocate %s in line '%s',ret=%d\n",xpS,xpLine,iRet));*/
return(iRet);
}
/* ******************************************************************* */
/* * Scan qconfig and search all virtual printer (device printer) * */
/* ******************************************************************* */
static void ScanQconfig_fn(char *psz,void (*fn)(char *, char *))
{
int iLg,iEtat;
FILE *pfile;
char *line,*p;
pstring name,comment;
line = NULL;
*name = 0;
*comment = 0;
if ((pfile = fopen(psz, "r")) == NULL)
{
DEBUG(0,( "Unable to open qconfig file %s for read!\n", psz));
return;
}
iEtat = 0;
/* scan qconfig file for searching <printername>: */
for (;(line = fgets_slash(NULL,sizeof(pstring),pfile)); free(line))
{
if (*line == '*' || *line == 0)
continue;
switch (iEtat)
{
case 0: /* locate an entry */
if (*line == '\t' || *line == ' ') continue;
if ((p=strchr(line,':')))
{
*p = '\0';
p = strtok(line,":");
if (strcmp(p,"bsh")!=0)
{
pstrcpy(name,p);
iEtat = 1;
continue;
}
}
break;
case 1: /* scanning device stanza */
if (*line == '*' || *line == 0) continue;
if (*line != '\t' && *line != ' ')
{
/* name is found without stanza device */
/* probably a good printer ??? */
fn(name,comment);
iEtat = 0;
continue;
}
if (strlocate(line,"backend"))
{
/* it's a device, not a virtual printer*/
iEtat = 0;
}
else if (strlocate(line,"device"))
{
/* it's a good virtual printer */
fn(name,comment);
iEtat = 0;
continue;
}
break;
}
}
fclose(pfile);
}
/* Scan qconfig file and locate de printername */
static BOOL ScanQconfig(char *psz,char *pszPrintername)
{
int iLg,iEtat;
FILE *pfile;
char *pName;
char *line;
pName = NULL;
line = NULL;
if ((pszPrintername!= NULL) && ((iLg = strlen(pszPrintername)) > 0))
pName = malloc(iLg+10);
if (pName == NULL)
{
DEBUG(0,(" Unable to allocate memory for printer %s\n",pszPrintername));
return(False);
}
if ((pfile = fopen(psz, "r")) == NULL)
{
DEBUG(0,( "Unable to open qconfig file %s for read!\n", psz));
free(pName);
return(False);
}
slprintf(pName,iLg+9,"%s:",pszPrintername);
iLg = strlen(pName);
/*DEBUG(3,( " Looking for entry %s\n",pName));*/
iEtat = 0;
/* scan qconfig file for searching <printername>: */
for (;(line = fgets_slash(NULL,sizeof(pstring),pfile)); free(line))
{
if (*line == '*' || *line == 0)
continue;
switch (iEtat)
{
case 0: /* scanning entry */
if (strncmp(line,pName,iLg) == 0)
{
iEtat = 1;
continue;
}
break;
case 1: /* scanning device stanza */
if (*line == '*' || *line == 0) continue;
if (*line != '\t' && *line != ' ')
{
/* name is found without stanza device */
/* probably a good printer ??? */
free (line);
free(pName);
fclose(pfile);
return(True);
}
if (strlocate(line,"backend"))
{
/* it's a device, not a virtual printer*/
iEtat = 0;
}
else if (strlocate(line,"device"))
{
/* it's a good virtual printer */
free (line);
free(pName);
fclose(pfile);
return(True);
}
break;
}
}
free (pName);
fclose(pfile);
return(False);
}
#endif
/***************************************************************************
Scan printcap file pszPrintcapname for a printer called pszPrintername.
Return True if found, else False. Returns False on error, too, after logging
the error at level 0. For generality, the printcap name may be passed - if
passed as NULL, the configuration will be queried for the name.
***************************************************************************/
BOOL pcap_printername_ok(char *pszPrintername, char *pszPrintcapname)
{
char *line=NULL;
char *psz;
char *p,*q;
FILE *pfile;
if (pszPrintername == NULL || pszPrintername[0] == '\0')
{
DEBUG(0,( "Attempt to locate null printername! Internal error?\n"));
return(False);
}
/* only go looking if no printcap name supplied */
if ((psz = pszPrintcapname) == NULL || psz[0] == '\0')
if (((psz = lp_printcapname()) == NULL) || (psz[0] == '\0'))
{
DEBUG(0,( "No printcap file name configured!\n"));
return(False);
}
#ifdef SYSV
if (strequal(psz, "lpstat"))
return (sysv_printername_ok(pszPrintername));
#endif
#ifdef AIX
if (strlocate(psz,"/qconfig"))
return(ScanQconfig(psz,pszPrintername));
#endif
if ((pfile = fopen(psz, "r")) == NULL)
{
DEBUG(0,( "Unable to open printcap file %s for read!\n", psz));
return(False);
}
for (;(line = fgets_slash(NULL,sizeof(pstring),pfile)); free(line))
{
if (*line == '#' || *line == 0)
continue;
/* now we have a real printer line - cut it off at the first : */
p = strchr(line,':');
if (p) *p = 0;
/* now just check if the name is in the list */
/* NOTE: I avoid strtok as the fn calling this one may be using it */
for (p=line; p; p=q)
{
if ((q = strchr(p,'|'))) *q++ = 0;
if (strequal(p,pszPrintername))
{
/* normalise the case */
pstrcpy(pszPrintername,p);
free(line);
fclose(pfile);
return(True);
}
p = q;
}
}
fclose(pfile);
return(False);
}
/***************************************************************************
run a function on each printer name in the printcap file. The function is
passed the primary name and the comment (if possible)
***************************************************************************/
void pcap_printer_fn(void (*fn)(char *, char*))
{
pstring name,comment;
char *line;
char *psz;
char *p,*q;
FILE *pfile;
/* only go looking if no printcap name supplied */
if (((psz = lp_printcapname()) == NULL) || (psz[0] == '\0'))
{
DEBUG(0,( "No printcap file name configured!\n"));
return;
}
#ifdef SYSV
if (strequal(psz, "lpstat")) {
sysv_printer_fn(fn);
return;
}
#endif
#ifdef AIX
if (strlocate(psz,"/qconfig"))
{
ScanQconfig_fn(psz,fn);
return;
}
#endif
if ((pfile = fopen(psz, "r")) == NULL)
{
DEBUG(0,( "Unable to open printcap file %s for read!\n", psz));
return;
}
for (;(line = fgets_slash(NULL,sizeof(pstring),pfile)); free(line))
{
if (*line == '#' || *line == 0)
continue;
/* now we have a real printer line - cut it off at the first : */
p = strchr(line,':');
if (p) *p = 0;
/* now find the most likely printer name and comment
this is pure guesswork, but it's better than nothing */
*name = 0;
*comment = 0;
for (p=line; p; p=q)
{
BOOL has_punctuation;
if ((q = strchr(p,'|'))) *q++ = 0;
has_punctuation = (strchr(p,' ') || strchr(p,'(') || strchr(p,')'));
if (strlen(p)>strlen(comment) && has_punctuation)
{
StrnCpy(comment,p,sizeof(comment)-1);
continue;
}
if (strlen(p) <= MAXPRINTERLEN && strlen(p)>strlen(name) && !has_punctuation)
{
if (!*comment) pstrcpy(comment,name);
pstrcpy(name,p);
continue;
}
if (!strchr(comment,' ') &&
strlen(p) > strlen(comment))
{
StrnCpy(comment,p,sizeof(comment)-1);
continue;
}
}
comment[60] = 0;
name[MAXPRINTERLEN] = 0;
if (*name)
fn(name,comment);
}
fclose(pfile);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.