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/*
* Support code for the Common UNIX Printing System ("CUPS")
*
* Copyright 1999 by Easy Software Products
*
* 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.
*/
#include "includes.h"
#include "smb.h"
#ifdef HAVE_LIBCUPS
#include <cups/cups.h>
#include <cups/language.h>
extern int DEBUGLEVEL;
/*
* 'cups_printer_fn()' - Call a function for every printer known to the
* system.
*/
void cups_printer_fn(void (*fn)(char *, char *))
{
http_t *http; /* HTTP connection to server */
ipp_t *request, /* IPP Request */
*response; /* IPP Response */
ipp_attribute_t *attr; /* Current attribute */
cups_lang_t *language; /* Default language */
char *name, /* printer-name attribute */
*make_model; /* make_model attribute */
/*
* Try to connect to the server...
*/
if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
return;
/*
* Build a CUPS_GET_PRINTERS request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
*/
request = ippNew();
request->request.op.operation_id = CUPS_GET_PRINTERS;
request->request.op.request_id = 1;
language = cupsLangDefault();
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
"attributes-charset", NULL, cupsLangEncoding(language));
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
"attributes-natural-language", NULL, language->language);
/*
* Do the request and get back a response...
*/
if ((response = cupsDoRequest(http, request, "/")) == NULL)
{
httpClose(http);
return;
}
for (attr = response->attrs; attr != NULL;)
{
/*
* Skip leading attributes until we hit a printer...
*/
while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
attr = attr->next;
if (attr == NULL)
break;
/*
* Pull the needed attributes from this printer...
*/
name = NULL;
make_model = NULL;
while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
{
if (strcmp(attr->name, "printer-name") == 0 &&
attr->value_tag == IPP_TAG_NAME)
name = attr->values[0].string.text;
if (strcmp(attr->name, "printer-make-and-model") == 0 &&
attr->value_tag == IPP_TAG_TEXT)
make_model = attr->values[0].string.text;
attr = attr->next;
}
/*
* See if we have everything needed...
*/
if (name == NULL)
break;
(*fn)(name, make_model);
}
ippDelete(response);
httpClose(http);
}
/*
* provide the equivalent of pcap_printername_ok() for SVID/XPG4 conforming
* systems.
*/
int cups_printername_ok(char *name)
{
http_t *http; /* HTTP connection to server */
ipp_t *request, /* IPP Request */
*response; /* IPP Response */
ipp_attribute_t *attr; /* Current attribute */
cups_lang_t *language; /* Default language */
char uri[HTTP_MAX_URI]; /* printer-uri attribute */
/*
* Try to connect to the server...
*/
if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
return (0);
/*
* Build a IPP_GET_PRINTER_ATTRS request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
* printer-uri
*/
request = ippNew();
request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
request->request.op.request_id = 1;
language = cupsLangDefault();
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
"attributes-charset", NULL, cupsLangEncoding(language));
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
"attributes-natural-language", NULL, language->language);
snprintf(uri, sizeof(uri), "ipp://localhost/printers/%s", name);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, uri);
/*
* Do the request and get back a response...
*/
if ((response = cupsDoRequest(http, request, "/")) == NULL)
{
httpClose(http);
return (0);
}
httpClose(http);
if (response->request.status.status_code >= IPP_OK_CONFLICT)
{
ippDelete(response);
return (0);
}
else
{
ippDelete(response);
return (1);
}
}
#else
/* this keeps fussy compilers happy */
void print_cups_dummy(void) {}
#endif /* HAVE_LIBCUPS */
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