--- a/cups/ipp-support.c

+++ b/cups/ipp-support.c

@@ -248,6 +248,10 @@ static const char * const ipp_std_ops[] =

 		{

 		  "CUPS-Get-Document"

 		},

+		* const ipp_alt_ext[] =

+		{

+		  "ALT-DOC-FT-JOB"

+		},

 		* const ipp_tag_names[] =

 		{			/* Value/group tag names */

 		  "zero",		/* 0x00 */

@@ -2145,6 +2145,8 @@ ippOpString(ipp_op_t op)          /* I - Operation ID */

     return (ipp_cups_ops[op - IPP_OP_CUPS_GET_DEFAULT]);

   else if (op >= IPP_OP_CUPS_GET_DOCUMENT && op <= IPP_OP_CUPS_CREATE_LOCAL_PRINTER)

     return (ipp_cups_ops2[op - IPP_OP_CUPS_GET_DOCUMENT]);

+  else if (op == IPP_OP_ALT_DOC_FT_JOB)

+    return (ipp_alt_ext[0]);

  /*

   * No, build an "0xxxxx" operation string...

@@ -2090,6 +2096,10 @@ ippOpValue(const char *name)		/* I - Textual name */

     if (!_cups_strcasecmp(name, ipp_cups_ops2[i]))

       return ((ipp_op_t)(i + 0x4027));

+  for (i = 0; i < (sizeof(ipp_alt_ext) / sizeof(ipp_alt_ext[0])); i ++)

+    if (!_cups_strcasecmp(name, ipp_alt_ext[i]))

+      return ((ipp_op_t)(i + IPP_OP_ALT_DOC_FT_JOB));

+

   if (!_cups_strcasecmp(name, "Create-Job-Subscription"))

     return (IPP_OP_CREATE_JOB_SUBSCRIPTIONS);

--- a/cups/ipp.h

+++ b/cups/ipp.h

@@ -339,7 +339,8 @@ typedef enum ipp_op_e			/**** IPP operations ****/

   IPP_OP_CUPS_AUTHENTICATE_JOB,		/* CUPS-Authenticate-Job: Authenticate a job @since CUPS 1.2/macOS 10.5@ */

   IPP_OP_CUPS_GET_PPD,			/* CUPS-Get-PPD: Get a PPD file @deprecated@ */

   IPP_OP_CUPS_GET_DOCUMENT = 0x4027,	/* CUPS-Get-Document: Get a document file @since CUPS 1.4/macOS 10.6@ */

-  IPP_OP_CUPS_CREATE_LOCAL_PRINTER	/* CUPS-Create-Local-Printer: Create a local (temporary) printer @since CUPS 2.2@ */

+  IPP_OP_CUPS_CREATE_LOCAL_PRINTER,	/* CUPS-Create-Local-Printer: Create a local (temporary) printer @since CUPS 2.2@ */

+  IPP_OP_ALT_DOC_FT_JOB       = 0xF000  /* Alt Linux extension: copy document from one job to another */

 #  ifndef _CUPS_NO_DEPRECATED

 #    define IPP_PRINT_JOB			IPP_OP_PRINT_JOB

--- a/scheduler/ipp.c

+++ b/scheduler/ipp.c

@@ -135,6 +135,7 @@ static int	user_allowed(cupsd_printer_t *p, const char *username);

 static void	validate_job(cupsd_client_t *con, ipp_attribute_t *uri);

 static int	validate_name(const char *name);

 static int	validate_user(cupsd_job_t *job, cupsd_client_t *con, const char *owner, char *username, size_t userlen);

+static void	alt_doc_ft_job(cupsd_client_t *con, ipp_attribute_t *uri);

 /*

@@ -612,6 +612,10 @@ cupsdProcessIPPRequest(

 		create_local_printer(con);

 		break;

+	    case IPP_OP_ALT_DOC_FT_JOB :

+                 alt_doc_ft_job(con, uri);

+                 break;

+

 	    default :

 		cupsdAddEvent(CUPSD_EVENT_SERVER_AUDIT, NULL, NULL, "%04X %s Operation %04X (%s) not supported.", IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED, con->http->hostname, con->request->request.op.operation_id, ippOpString(con->request->request.op.operation_id));

@@ -11147,6 +11152,86 @@ validate_user(cupsd_job_t    *job,	/* I - Job */

                            con, owner) == HTTP_OK);

 }

+static void

+alt_doc_ft_job(cupsd_client_t *con, ipp_attribute_t *uri)

+{

+  ipp_attribute_t *attr;

+  cupsd_job_t *job;

+

+  int fromjob, jobid;

+  int document_number;

+  cups_file_t *fp;

+  int rfd, wfd;

+  char buffer[8192];

+  ssize_t bytes, wbytes;

+  http_status_t status;

+

+  char filename[1024];

+

+  cupsdLogMessage(CUPSD_LOG_DEBUG2, "alt_doc_ft_job(%p[%d], %s)", con, con->number,

+      uri->values[0].string.text);

+

+  /* need check for printer uri */

+

+  if ((attr = ippFindAttribute(con->request, "from-job", IPP_TAG_INTEGER)) == NULL)

+  {

+    send_ipp_status(con, IPP_BAD_REQUEST,

+		     _("Got a printer-uri attribute but no from-job."));

+    return;

+  }

+

+  fromjob = attr->values[0].integer;

+

+  if ((attr = ippFindAttribute(con->request, "job-id", IPP_TAG_INTEGER)) == NULL)

+  {

+    send_ipp_status(con, IPP_BAD_REQUEST,

+                     _("Got a printer-uri attribute but no job-id."));

+    return;

+  }

+

+  jobid = attr->values[0].integer;

+

+  if ((attr = ippFindAttribute(con->request, "document-number", IPP_TAG_INTEGER)) == NULL)

+  {

+    send_ipp_status(con, IPP_BAD_REQUEST,

+	             _("Got a printer-uri attribute but no document-number."));

+    return;

+  }

+

+  document_number = attr->values[0].integer;

+

+  if ((job = cupsdFindJob(jobid)) == NULL)

+  {

+   /*

+    * Nope - return a "not found" error...

+    */

+

+    send_ipp_status(con, IPP_NOT_FOUND, _("Job #%d does not exist."), jobid);

+    return;

+  }

+

+  snprintf(filename, sizeof(filename), "%s/d%05d-%03d", RequestRoot, fromjob, document_number);

+

+  if (con->filename != NULL)

+    cupsdLogMessage(CUPSD_LOG_DEBUG2, "alt_doc_ft_job: con->filename is %s",

+      con->filename);

+  else

+    cupsdLogMessage(CUPSD_LOG_DEBUG2, "alt_doc_ft_job: con->filename is NULL");

+

+

+  con->filename = malloc(strlen(RequestRoot) + 4 + 5 + 1);

+  snprintf(con->filename, sizeof(filename), "%s/tmp%05d", RequestRoot, fromjob);

+

+  if (link(filename, con->filename) == -1)

+  {

+    cupsdLogMessage(CUPSD_LOG_DEBUG2, "alt_doc_ft_job: link: %s", strerror(errno));

+    send_ipp_status(con, IPP_INTERNAL_ERROR,

+	_("Can't make a hardlink in the filesystem."));

+    return;

+  }

+

+  send_document(con, uri);

+}

 /*

  * End of "$Id: ipp.c 12851 2015-08-28 13:17:53Z msweet $".