r10371: Adding iPrint printing backend written by Joel J. Smith @ Novell.

Jeremy.
(This used to be commit 155dc2d52a971bfb8d7565c06f3efc637e130b11)

1 files changed, 1241 insertions, 0 deletions

diff --git a/source3/printing/print_iprint.c b/source3/printing/print_iprint.c
new file mode 100644
index 0000000000..33bbcb256a
--- /dev/null
+++ b/source3/printing/print_iprint.c
@@ -0,0 +1,1241 @@
+/*
+ * Support code for Novell iPrint using the Common UNIX Printing
+ * System ("CUPS") libraries
+ *
+ * Copyright 1999-2003 by Michael R Sweet.
+ * Portions Copyright 2005 by Joel J. Smith.
+ *
+ * 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 "printing.h"
+
+#ifdef HAVE_IPRINT
+#include <cups/cups.h>
+#include <cups/language.h>
+
+#define OPERATION_NOVELL_LIST_PRINTERS          0x401A
+#define OPERATION_NOVELL_MGMT                   0x401C
+#define NOVELL_SERVER_SYSNAME			"sysname="
+#define NOVELL_SERVER_SYSNAME_NETWARE		"NetWare IA32"
+#define NOVELL_SERVER_VERSION_STRING		"iprintserverversion="
+#define NOVELL_SERVER_VERSION_OES_SP1		33554432
+
+/*
+ * 'iprint_passwd_cb()' - The iPrint password callback...
+ */
+
+static const char *				/* O - Password or NULL */
+iprint_passwd_cb(const char *prompt)	/* I - Prompt */
+{
+       /*
+	* Always return NULL to indicate that no password is available...
+	*/
+
+	return (NULL);
+}
+
+static const char *iprint_server(void)
+{
+	if ((lp_iprint_server() != NULL) && (strlen(lp_iprint_server()) > 0)) {
+		DEBUG(10, ("iprint server explicitly set to %s\n",
+			   lp_iprint_server()));
+		return lp_iprint_server();
+	}
+
+	DEBUG(10, ("iprint server left to default %s\n", cupsServer()));
+	return cupsServer();
+}
+
+/*
+ * Pass in an already connected http_t*
+ * Returns the server version if one can be found, multiplied by
+ * -1 for all NetWare versions.  Returns 0 if a server version
+ * cannot be determined
+ */
+
+static int iprint_get_server_version(http_t *http, char* serviceUri)
+{
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	ipp_attribute_t	*attr;			/* Current attribute */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		*ver;			/* server version pointer */
+	char		*vertmp;		/* server version tmp pointer */
+	int		serverVersion = 0;	/* server version */
+	char		*os;			/* server os */
+	int		osFlag = 0;		/* 0 for NetWare, 1 for anything else */
+	char		*temp;			/* pointer for string manipulation */
+
+       /*
+	* Build an OPERATION_NOVELL_MGMT("get-server-version") request,
+	* which requires the following attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*    operation-name
+	*    service-uri
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = OPERATION_NOVELL_MGMT;
+	request->request.op.request_id   = 1;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+	             "service-uri", NULL, serviceUri);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+	              "operation-name", NULL, "get-server-version");
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	if (((response = cupsDoRequest(http, request, "/ipp/")) == NULL) ||
+	    (response->request.status.status_code >= IPP_OK_CONFLICT))
+		goto out;
+
+	if (((attr = ippFindAttribute(response, "server-version",
+	                              IPP_TAG_STRING)) != NULL)) {
+		if ((ver = strstr(attr->values[0].string.text,
+                                  NOVELL_SERVER_VERSION_STRING)) != NULL) {
+			ver += strlen(NOVELL_SERVER_VERSION_STRING);
+		       /*
+			* Strangely, libcups stores a IPP_TAG_STRING (octet
+			* string) as a null-terminated string with no length
+			* even though it could be binary data with nulls in
+			* it.  Luckily, in this case the value is not binary.
+			*/
+			serverVersion = strtol(ver, &vertmp, 10);
+
+			/* Check for not found, overflow or negative version */
+			if ((ver == vertmp) || (serverVersion < 0))
+				serverVersion = 0;
+		}
+
+		if ((os = strstr(attr->values[0].string.text,
+                                  NOVELL_SERVER_SYSNAME)) != NULL) {
+			os += strlen(NOVELL_SERVER_SYSNAME);
+			if ((temp = strchr(os,'<')) != NULL)
+				*temp = '\0';
+			if (strcmp(os,NOVELL_SERVER_SYSNAME_NETWARE))
+				osFlag = 1; /* 1 for non-NetWare systems */
+		}
+	}
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (osFlag == 0)
+		serverVersion *= -1;
+
+	return serverVersion;
+}
+
+
+static int iprint_cache_add_printer(http_t *http,
+				   int reqId,
+				   char* url)
+{
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	ipp_attribute_t	*attr;			/* Current attribute */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		*name,			/* printer-name attribute */
+			*info,			/* printer-info attribute */
+			smb_enabled,		/* smb-enabled attribute */
+			secure;			/* security-enabled attrib. */
+
+	char		*httpPath;	/* path portion of the printer-uri */
+
+	static const char *pattrs[] =	/* Requested printer attributes */
+			{
+			  "printer-name",
+			  "security-enabled",
+			  "printer-info",
+			  "smb-enabled"
+			};       
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
+	request->request.op.request_id   = reqId;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, url);
+
+	ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+	              "requested-attributes",
+	              (sizeof(pattrs) / sizeof(pattrs[0])),
+	              NULL, pattrs);
+
+	/*
+	 * Do the request and get back a response...
+	 */
+
+	if ((httpPath = strstr(url,"://")) == NULL ||
+			(httpPath = strchr(httpPath+3,'/')) == NULL)
+	{
+		ippDelete(request);
+		request = NULL;
+		goto out;
+	}
+
+	if ((response = cupsDoRequest(http, request, httpPath)) == NULL) {
+		ipp_status_t lastErr = cupsLastError();
+
+	       /*
+		* Ignore printers that cannot be queried without credentials
+		*/
+		if (lastErr == IPP_FORBIDDEN || 
+		    lastErr == IPP_NOT_AUTHENTICATED ||
+		    lastErr == IPP_NOT_AUTHORIZED)
+			goto out;
+
+		DEBUG(0,("Unable to get printer list - %s\n",
+		      ippErrorString(lastErr)));
+		goto out;
+	}
+
+	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;
+		info       = NULL;
+		smb_enabled= 1;
+		secure     = 0;
+
+		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-info") == 0 &&
+			    (attr->value_tag == IPP_TAG_TEXT ||
+			    attr->value_tag == IPP_TAG_TEXTLANG))
+				info = attr->values[0].string.text;
+
+		       /*
+			* If the smb-enabled attribute is present and the
+			* value is set to 0, don't show the printer.
+			* If the attribute is not present, assume that the
+			* printer should show up
+			*/
+			if (!strcmp(attr->name, "smb-enabled") &&
+			    ((attr->value_tag == IPP_TAG_INTEGER &&
+			    !attr->values[0].integer) ||
+			    (attr->value_tag == IPP_TAG_BOOLEAN &&
+			    !attr->values[0].boolean)))
+				smb_enabled = 0;
+
+		       /*
+			* If the security-enabled attribute is present and the
+			* value is set to 1, don't show the printer.
+			* If the attribute is not present, assume that the
+			* printer should show up
+			*/
+			if (!strcmp(attr->name, "security-enabled") &&
+			    ((attr->value_tag == IPP_TAG_INTEGER &&
+			    attr->values[0].integer) ||
+			    (attr->value_tag == IPP_TAG_BOOLEAN &&
+			    attr->values[0].boolean)))
+				secure = 1;
+
+			attr = attr->next;
+		}
+
+	       /*
+		* See if we have everything needed...
+		* Make sure the printer is not a secure printer
+		* and make sure smb printing hasn't been explicitly
+		* disabled for the printer
+		*/
+
+		if (name != NULL && !secure && smb_enabled) 
+			pcap_cache_add(name, info);
+	}
+
+ out:
+	if (response)
+		ippDelete(response);
+	return(0);
+}
+
+BOOL iprint_cache_reload(void)
+{
+	http_t		*http = NULL;		/* HTTP connection to server */
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	ipp_attribute_t	*attr;			/* Current attribute */
+	cups_lang_t	*language = NULL;	/* Default language */
+	int		i;
+	BOOL ret = False;
+
+	DEBUG(5, ("reloading iprint printcap cache\n"));
+
+       /*
+	* Make sure we don't ask for passwords...
+	*/
+
+	cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+	* Try to connect to the server...
+	*/
+
+	if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+		DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+			 iprint_server(), strerror(errno)));
+		goto out;
+	}
+
+       /*
+	* Build a OPERATION_NOVELL_LIST_PRINTERS request, which requires the following attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = OPERATION_NOVELL_LIST_PRINTERS;
+	request->request.op.request_id   = 1;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+	             "ipp-server", NULL, "ippSrvr");
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	if ((response = cupsDoRequest(http, request, "/ipp")) == NULL) {
+		DEBUG(0,("Unable to get printer list - %s\n",
+			 ippErrorString(cupsLastError())));
+		goto out;
+	}
+
+	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...
+		*/
+
+		while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
+		{
+			if (strcmp(attr->name, "printer-name") == 0 &&
+			    (attr->value_tag == IPP_TAG_URI ||
+			     attr->value_tag == IPP_TAG_NAME ||
+			     attr->value_tag == IPP_TAG_TEXT ||
+			     attr->value_tag == IPP_TAG_NAMELANG ||
+			     attr->value_tag == IPP_TAG_TEXTLANG))
+			{
+				for (i = 0; i<attr->num_values; i++)
+				{
+					char *url = attr->values[i].string.text;
+					if (!url || !strlen(url))
+						continue;
+					iprint_cache_add_printer(http, i+2, url);
+				}
+			}
+			attr = attr->next;
+		}
+	}
+
+	ret = True;
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (http)
+		httpClose(http);
+
+	return ret;
+}
+
+
+/*
+ * 'iprint_job_delete()' - Delete a job.
+ */
+
+static int iprint_job_delete(int snum, struct printjob *pjob)
+{
+	int		ret = 1;		/* Return value */
+	http_t		*http = NULL;		/* HTTP connection to server */
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		uri[HTTP_MAX_URI];	/* printer-uri attribute */
+	char		httpPath[HTTP_MAX_URI];	/* path portion of the printer-uri */
+
+
+	DEBUG(5,("iprint_job_delete(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+	* Make sure we don't ask for passwords...
+	*/
+
+	cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+	* Try to connect to the server...
+	*/
+
+	if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+		DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+			 iprint_server(), strerror(errno)));
+		goto out;
+	}
+
+       /*
+	* Build an IPP_CANCEL_JOB request, which uses the following
+	* attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*    printer-uri
+	*    job-id
+	*    requesting-user-name
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_CANCEL_JOB;
+	request->request.op.request_id   = 1;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
+
+	ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", pjob->sysjob);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+	             NULL, pjob->user);
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+	if ((response = cupsDoRequest(http, request, httpPath)) != NULL) {
+		if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+			DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
+				ippErrorString(cupsLastError())));
+		} else {
+			ret = 0;
+		}
+	} else {
+		DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
+			ippErrorString(cupsLastError())));
+	}
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (http)
+		httpClose(http);
+
+	return ret;
+}
+
+
+/*
+ * 'iprint_job_pause()' - Pause a job.
+ */
+
+static int iprint_job_pause(int snum, struct printjob *pjob)
+{
+	int		ret = 1;		/* Return value */
+	http_t		*http = NULL;		/* HTTP connection to server */
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		uri[HTTP_MAX_URI];	/* printer-uri attribute */
+	char		httpPath[HTTP_MAX_URI];	/* path portion of the printer-uri */
+
+
+	DEBUG(5,("iprint_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+	* Make sure we don't ask for passwords...
+	*/
+
+	cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+	* Try to connect to the server...
+	*/
+
+	if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+		DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+			 iprint_server(), strerror(errno)));
+		goto out;
+	}
+
+       /*
+	* Build an IPP_HOLD_JOB request, which requires the following
+	* attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*    printer-uri
+	*    job-id
+	*    requesting-user-name
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_HOLD_JOB;
+	request->request.op.request_id   = 1;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
+
+	ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", pjob->sysjob);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+	             NULL, pjob->user);
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+	if ((response = cupsDoRequest(http, request, httpPath)) != NULL) {
+		if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+			DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
+				ippErrorString(cupsLastError())));
+		} else {
+			ret = 0;
+		}
+	} else {
+		DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
+			ippErrorString(cupsLastError())));
+	}
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (http)
+		httpClose(http);
+
+	return ret;
+}
+
+
+/*
+ * 'iprint_job_resume()' - Resume a paused job.
+ */
+
+static int iprint_job_resume(int snum, struct printjob *pjob)
+{
+	int		ret = 1;		/* Return value */
+	http_t		*http = NULL;		/* HTTP connection to server */
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		uri[HTTP_MAX_URI];	/* printer-uri attribute */
+	char		httpPath[HTTP_MAX_URI];	/* path portion of the printer-uri */
+
+
+	DEBUG(5,("iprint_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+	* Make sure we don't ask for passwords...
+	*/
+
+	cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+	* Try to connect to the server...
+	*/
+
+	if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+		DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+			 iprint_server(), strerror(errno)));
+		goto out;
+	}
+
+       /*
+	* Build an IPP_RELEASE_JOB request, which requires the following
+	* attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*    printer-uri
+	*    job-id
+	*    requesting-user-name
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_RELEASE_JOB;
+	request->request.op.request_id   = 1;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
+
+	ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id", pjob->sysjob);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+	             NULL, pjob->user);
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+	if ((response = cupsDoRequest(http, request, httpPath)) != NULL) {
+		if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+			DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
+				ippErrorString(cupsLastError())));
+		} else {
+			ret = 0;
+		}
+	} else {
+		DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
+			ippErrorString(cupsLastError())));
+	}
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (http)
+		httpClose(http);
+
+	return ret;
+}
+
+
+/*
+ * 'iprint_job_submit()' - Submit a job for printing.
+ */
+
+static int iprint_job_submit(int snum, struct printjob *pjob)
+{
+	int		ret = 1;		/* Return value */
+	http_t		*http = NULL;		/* HTTP connection to server */
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	ipp_attribute_t	*attr;		/* Current attribute */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		uri[HTTP_MAX_URI]; /* printer-uri attribute */
+	char 		*clientname = NULL; 	/* hostname of client for job-originating-host attribute */
+
+	DEBUG(5,("iprint_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
+
+       /*
+	* Make sure we don't ask for passwords...
+	*/
+
+	cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+	* Try to connect to the server...
+	*/
+
+	if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+		DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+			 iprint_server(), strerror(errno)));
+		goto out;
+	}
+
+       /*
+	* Build an IPP_PRINT_JOB request, which requires the following
+	* attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*    printer-uri
+	*    requesting-user-name
+	*    [document-data]
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_PRINT_JOB;
+	request->request.op.request_id   = 1;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), PRINTERNAME(snum));
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+	             "printer-uri", NULL, uri);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
+	             NULL, pjob->user);
+
+	clientname = client_name();
+	if (strcmp(clientname, "UNKNOWN") == 0) {
+		clientname = client_addr();
+	}
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
+	             "job-originating-host-name", NULL,
+	             clientname);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
+	             pjob->jobname);
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	slprintf(uri, sizeof(uri) - 1, "/ipp/%s", PRINTERNAME(snum));
+
+	if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
+		if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+			DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
+			         ippErrorString(cupsLastError())));
+		} else {
+			ret = 0;
+		}
+	} else {
+		DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
+			 ippErrorString(cupsLastError())));
+	}
+
+	if ( ret == 0 )
+		unlink(pjob->filename);
+	/* else print_job_end will do it for us */
+
+	if ( ret == 0 ) {
+
+		attr = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER);
+		if (attr != NULL && attr->group_tag == IPP_TAG_JOB)
+		{
+			pjob->sysjob = attr->values[0].integer;
+		}
+	}
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (http)
+		httpClose(http);
+
+	return ret;
+}
+
+/*
+ * 'iprint_queue_get()' - Get all the jobs in the print queue.
+ */
+
+static int iprint_queue_get(const char *sharename,
+			    enum printing_types printing_type,
+			    char *lpq_command,
+			    print_queue_struct **q, 
+			    print_status_struct *status)
+{
+	fstring		printername;
+	http_t		*http = NULL;		/* HTTP connection to server */
+	ipp_t		*request = NULL,	/* IPP Request */
+			*response = NULL;	/* IPP Response */
+	ipp_attribute_t	*attr = NULL;		/* Current attribute */
+	cups_lang_t	*language = NULL;	/* Default language */
+	char		uri[HTTP_MAX_URI]; /* printer-uri attribute */
+	char		serviceUri[HTTP_MAX_URI]; /* service-uri attribute */
+	char		httpPath[HTTP_MAX_URI];	/* path portion of the uri */
+	int		jobUseUnixTime = 0;	/* Whether job times should
+                                                 * be assumed to be Unix time */
+	int		qcount = 0,		/* Number of active queue entries */
+			qalloc = 0;		/* Number of queue entries allocated */
+	print_queue_struct *queue = NULL,	/* Queue entries */
+			*temp;		/* Temporary pointer for queue */
+	const char	*user_name,	/* job-originating-user-name attribute */
+			*job_name;	/* job-name attribute */
+	int		job_id;		/* job-id attribute */
+	int		job_k_octets;	/* job-k-octets attribute */
+	time_t		job_time;	/* time-at-creation attribute */
+	time_t		printer_current_time = 0;	/* printer's current time */
+	time_t		printer_up_time = 0;	/* printer's uptime */
+	ipp_jstate_t	job_status;	/* job-status attribute */
+	int		job_priority;	/* job-priority attribute */
+	static const char *jattrs[] =	/* Requested job attributes */
+			{
+			  "job-id",
+			  "job-k-octets",
+			  "job-name",
+			  "job-originating-user-name",
+			  "job-priority",
+			  "job-state",
+			  "time-at-creation",
+			};
+	static const char *pattrs[] =	/* Requested printer attributes */
+			{
+			  "printer-state",
+			  "printer-state-message",
+			  "printer-current-time",
+			  "printer-up-time"
+			};
+
+	*q = NULL;
+
+	/* HACK ALERT!!!  The porblem with support the 'printer name' 
+	   option is that we key the tdb off the sharename.  So we will 
+	   overload the lpq_command string to pass in the printername 
+	   (which is basically what we do for non-cups printers ... using 
+	   the lpq_command to get the queue listing). */
+
+	fstrcpy( printername, lpq_command );
+
+	DEBUG(5,("iprint_queue_get(%s, %p, %p)\n", printername, q, status));
+
+       /*
+	* Make sure we don't ask for passwords...
+	*/
+
+	cupsSetPasswordCB(iprint_passwd_cb);
+
+       /*
+	* Try to connect to the server...
+	*/
+
+	if ((http = httpConnect(iprint_server(), ippPort())) == NULL) {
+		DEBUG(0,("Unable to connect to iPrint server %s - %s\n", 
+			 iprint_server(), strerror(errno)));
+		goto out;
+	}
+
+       /*
+	* Generate the printer URI and the service URI that goes with it...
+	*/
+
+	slprintf(uri, sizeof(uri) - 1, "ipp://%s/ipp/%s", iprint_server(), printername);
+	slprintf(serviceUri, sizeof(serviceUri) - 1, "ipp://%s/ipp/", iprint_server());
+
+       /*
+	* For Linux iPrint servers from OES SP1 on, the iPrint server
+	* uses Unix time for job start times unless it detects the iPrint
+	* client in an http User-Agent header.  (This was done to accomodate
+	* CUPS broken behavior.  According to RFC 2911, section 4.3.14, job
+	* start times are supposed to be relative to how long the printer has
+	* been up.)  Since libcups doesn't allow us to set that header before
+	* the request is sent, this ugly hack allows us to detect the server
+	* version and decide how to interpret the job time.
+	*/
+	if (iprint_get_server_version(http, serviceUri) >=
+	    NOVELL_SERVER_VERSION_OES_SP1)
+		jobUseUnixTime = 1;
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
+	request->request.op.request_id   = 2;
+
+	language = cupsLangDefault();
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+	             "printer-uri", NULL, uri);
+
+	ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+	              "requested-attributes",
+	              (sizeof(pattrs) / sizeof(pattrs[0])),
+	              NULL, pattrs);
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", printername);
+
+	if ((response = cupsDoRequest(http, request, httpPath)) == NULL) {
+		DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
+			 ippErrorString(cupsLastError())));
+		*q = queue;
+		goto out;
+	}
+
+	if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+		DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
+			 ippErrorString(response->request.status.status_code)));
+		*q = queue;
+		goto out;
+	}
+
+       /*
+	* Get the current printer status and convert it to the SAMBA values.
+	*/
+
+	if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
+		if (attr->values[0].integer == IPP_PRINTER_STOPPED)
+			status->status = LPSTAT_STOPPED;
+		else
+			status->status = LPSTAT_OK;
+	}
+
+	if ((attr = ippFindAttribute(response, "printer-state-message",
+	                             IPP_TAG_TEXT)) != NULL)
+		fstrcpy(status->message, attr->values[0].string.text);
+
+	if ((attr = ippFindAttribute(response, "printer-current-time",
+	                             IPP_TAG_DATE)) != NULL)
+		printer_current_time = ippDateToTime(attr->values[0].date);
+
+	if ((attr = ippFindAttribute(response, "printer-up-time",
+	                             IPP_TAG_INTEGER)) != NULL)
+		printer_up_time = attr->values[0].integer;
+
+	ippDelete(response);
+	response = NULL;
+
+       /*
+	* Build an IPP_GET_JOBS request, which requires the following
+	* attributes:
+	*
+	*    attributes-charset
+	*    attributes-natural-language
+	*    requested-attributes
+	*    printer-uri
+	*/
+
+	request = ippNew();
+
+	request->request.op.operation_id = IPP_GET_JOBS;
+	request->request.op.request_id   = 3;
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
+	             "attributes-charset", NULL, "utf-8");
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
+	             "attributes-natural-language", NULL, language->language);
+
+	ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
+	             "printer-uri", NULL, uri);
+
+	ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
+	              "requested-attributes",
+	              (sizeof(jattrs) / sizeof(jattrs[0])),
+	              NULL, jattrs);
+
+       /*
+	* Do the request and get back a response...
+	*/
+
+	slprintf(httpPath, sizeof(httpPath) - 1, "/ipp/%s", printername);
+
+	if ((response = cupsDoRequest(http, request, httpPath)) == NULL) {
+		DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
+			 ippErrorString(cupsLastError())));
+		goto out;
+	}
+
+	if (response->request.status.status_code >= IPP_OK_CONFLICT) {
+		DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
+			 ippErrorString(response->request.status.status_code)));
+		goto out;
+	}
+
+       /*
+	* Process the jobs...
+	*/
+
+	qcount = 0;
+	qalloc = 0;
+	queue  = NULL;
+
+	for (attr = response->attrs; attr != NULL; attr = attr->next) {
+	       /*
+		* Skip leading attributes until we hit a job...
+		*/
+
+		while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
+			attr = attr->next;
+
+		if (attr == NULL)
+			break;
+
+	       /*
+		* Allocate memory as needed...
+		*/
+		if (qcount >= qalloc) {
+			qalloc += 16;
+
+			temp = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
+
+			if (temp == NULL) {
+				DEBUG(0,("iprint_queue_get: Not enough memory!"));
+				qcount = 0;
+				SAFE_FREE(queue);
+				goto out;
+			}
+
+			queue = temp;
+		}
+
+		temp = queue + qcount;
+		memset(temp, 0, sizeof(print_queue_struct));
+
+	       /*
+		* Pull the needed attributes from this job...
+		*/
+
+		job_id       = 0;
+		job_priority = 50;
+		job_status   = IPP_JOB_PENDING;
+		job_time     = 0;
+		job_k_octets = 0;
+		user_name    = NULL;
+		job_name     = NULL;
+
+		while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
+			if (attr->name == NULL) {
+				attr = attr->next;
+				break;
+			}
+
+			if (strcmp(attr->name, "job-id") == 0 &&
+			    attr->value_tag == IPP_TAG_INTEGER)
+				job_id = attr->values[0].integer;
+
+			if (strcmp(attr->name, "job-k-octets") == 0 &&
+			    attr->value_tag == IPP_TAG_INTEGER)
+				job_k_octets = attr->values[0].integer;
+
+			if (strcmp(attr->name, "job-priority") == 0 &&
+			    attr->value_tag == IPP_TAG_INTEGER)
+				job_priority = attr->values[0].integer;
+
+			if (strcmp(attr->name, "job-state") == 0 &&
+			    attr->value_tag == IPP_TAG_ENUM)
+				job_status = (ipp_jstate_t)(attr->values[0].integer);
+
+			if (strcmp(attr->name, "time-at-creation") == 0 &&
+			    attr->value_tag == IPP_TAG_INTEGER)
+			{
+			       /*
+				* If jobs times are in Unix time, the accuracy of the job
+				* start time depends upon the iPrint server's time being
+				* set correctly.  Otherwise, the accuracy depends upon
+				* the Samba server's time being set correctly
+				*/
+
+				if (jobUseUnixTime)
+					job_time = attr->values[0].integer; 
+				else
+					job_time = time(NULL) - printer_up_time + attr->values[0].integer;
+			}
+
+			if (strcmp(attr->name, "job-name") == 0 &&
+			    (attr->value_tag == IPP_TAG_NAMELANG ||
+			     attr->value_tag == IPP_TAG_NAME))
+				job_name = attr->values[0].string.text;
+
+			if (strcmp(attr->name, "job-originating-user-name") == 0 &&
+			    (attr->value_tag == IPP_TAG_NAMELANG ||
+			     attr->value_tag == IPP_TAG_NAME))
+				user_name = attr->values[0].string.text;
+
+			attr = attr->next;
+		}
+
+	       /*
+		* See if we have everything needed...
+		*/
+
+		if (user_name == NULL || job_name == NULL || job_id == 0) {
+			if (attr == NULL)
+				break;
+			else
+				continue;
+		}
+
+		temp->job      = job_id;
+		temp->size     = job_k_octets * 1024;
+		temp->status   = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
+		                 job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
+                                 job_status == IPP_JOB_HELD ? LPQ_PAUSED :
+                                 LPQ_PRINTING;
+		temp->priority = job_priority;
+		temp->time     = job_time;
+		strncpy(temp->fs_user, user_name, sizeof(temp->fs_user) - 1);
+		strncpy(temp->fs_file, job_name, sizeof(temp->fs_file) - 1);
+
+		qcount ++;
+
+		if (attr == NULL)
+			break;
+	}
+
+       /*
+	* Return the job queue...
+	*/
+
+	*q = queue;
+
+ out:
+	if (response)
+		ippDelete(response);
+
+	if (language)
+		cupsLangFree(language);
+
+	if (http)
+		httpClose(http);
+
+	return qcount;
+}
+
+
+/*
+ * 'iprint_queue_pause()' - Pause a print queue.
+ */
+
+static int iprint_queue_pause(int snum)
+{
+	return(-1); //Not supported without credentials
+}
+
+
+/*
+ * 'iprint_queue_resume()' - Restart a print queue.
+ */
+
+static int iprint_queue_resume(int snum)
+{
+	return(-1); //Not supported without credentials
+}
+
+/*******************************************************************
+ * iPrint printing interface definitions...
+ ******************************************************************/
+
+struct printif	iprint_printif =
+{
+	PRINT_IPRINT,
+	iprint_queue_get,
+	iprint_queue_pause,
+	iprint_queue_resume,
+	iprint_job_delete,
+	iprint_job_pause,
+	iprint_job_resume,
+	iprint_job_submit,
+};
+
+#else
+ /* this keeps fussy compilers happy */
+ void print_iprint_dummy(void) {}
+#endif /* HAVE_IPRINT */