printing/print_cups.c from 2.0.6

(This used to be commit 452776a5a7951c84437e424874ff110fc56296db)

1 files changed, 206 insertions, 0 deletions

diff --git a/source3/printing/print_cups.c b/source3/printing/print_cups.c
new file mode 100644
index 0000000000..fff135e2a2
--- /dev/null
+++ b/source3/printing/print_cups.c
@@ -0,0 +1,206 @@
+/*
+ * 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 */