Add Network Printer through libcups API
Azuri
azuri.shah at fmr.com
Wed Aug 31 06:06:13 PDT 2011
> Thanks Chad I was able to add a printer and enebale it and I can see it in cups webpage. But the problem is user doesn have PPD file or anything. And I am not doing anything for PPD file. After I add the printer I can see it on cups webpage but cant see int he print menu on any page,where it lists all the printers. So how do I make printer visible there?
Thanks,
Azuri
> The usage message for lpadmin indicates that -p is how you add a printer,
> which ultimately arrives at set_printer_options(). That's where you should
> be looking.
>
> -Chad
>
> On 8/30/11 4:59 PM, "Azuri" <azuri.shah at fmr.com> thusly spake:
>
> >
> > The code I am currently using from lpadmin.c file is below. I get error saying
> > can't find printer or class.
> >
> >
> > http_t *http ;
> > char *printer = "socket://10.105.152.49:9100";
> > char *pclass;
> > int i; /* Looping var */
> > ipp_t *request, /* IPP Request */
> > *response; /* IPP Response */
> > ipp_attribute_t *attr, /* Current attribute */
> > *members; /* Members in class */
> > char uri[HTTP_MAX_URI]; /* URI for printer/class */
> >
> >
> >
> >
> > /*
> > * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
> > following
> > * attributes:
> > *
> > * attributes-charset
> > * attributes-natural-language
> > * printer-uri
> > */
> > http = httpConnectEncrypt(cupsServer(), ippPort(), cupsEncryption());
> > request = ippNewRequest(IPP_GET_PRINTER_ATTRIBUTES);
> >
> > httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,
> > "localhost", 0, "/classes/%s", pclass);
> > ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
> > "printer-uri", NULL, uri);
> >
> > /*
> > * Do the request and get back a response...
> > */
> >
> > response = cupsDoRequest(http, request, "/");
> >
> > /*
> > * Build a CUPS_ADD_CLASS request, which requires the following
> > * attributes:
> > *
> > * attributes-charset
> > * attributes-natural-language
> > * printer-uri
> > * member-uris
> > */
> >
> > request = ippNewRequest(CUPS_ADD_CLASS);
> >
> > ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
> > "printer-uri", NULL, uri);
> >
> > /*
> > * See if the printer is already in the class...
> > */
> >
> > if (response != NULL &&
> > (members = ippFindAttribute(response, "member-names", IPP_TAG_NAME))
> > != NULL)
> > for (i = 0; i < members->num_values; i ++)
> > if (strcasecmp(printer, members->values[i].string.text) == 0)
> > {
> >
> > ippDelete(request);
> > ippDelete(response);
> > //return (0);
> > }
> >
> > /*
> > * OK, the printer isn't part of the class, so add it...
> > */
> >
> > httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,
> > "localhost", 0, "/printers/%s", printer);
> >
> > if (response != NULL &&
> > (members = ippFindAttribute(response, "member-uris", IPP_TAG_URI)) !=
> > NULL)
> > {
> > /*
> > * Add the printer to the existing list...
> > */
> >
> > attr = ippAddStrings(request, IPP_TAG_PRINTER, IPP_TAG_URI,
> > "member-uris", members->num_values + 1, NULL,
> > NULL);
> > for (i = 0; i < members->num_values; i ++)
> > attr->values[i].string.text =
> > _cupsStrAlloc(members->values[i].string.text);
> >
> > attr->values[i].string.text = _cupsStrAlloc(uri);
> > }
> > else
> > ippAddString(request, IPP_TAG_PRINTER, IPP_TAG_URI, "member-uris",
> > NULL,
> > uri);
> >
> > /*
> > * Then send the request...
> > */
> >
> > ippDelete(response);
> >
> > if ((response = cupsDoRequest(http, request, "/admin/")) == NULL)
> > {
> >
> > }
> > else if (response->request.status.status_code > IPP_OK_CONFLICT)
> > {
> > _cupsLangPrintf(stderr, "lpadmin: %s\n", cupsLastErrorString());
> >
> > ippDelete(response);
> >
> > }
> > else
> > {
> > ippDelete(response);
> >
> > }
> >
> >
> >
> >
> >
> >
> >
> >> I did look at lpadmin.c file both its not working . But I am totally confusd.
> >> I did look more into add_printer_to_class method but its not working. All I
> >> want is when user enters socket://123.45.45.67 to UI, my code should go ahead
> >> and add the printer tot he mac. I have spent hello lot of time trying to
> >> figure this out using API's but no success at all so far. Your help will be
> >> appreciated.
> >>
> >> Russell,
> >>>
> >>> Just download the CUPS source and look at the lpadmin tool.
> >>>
> >>> -Chad
> >>>
> >>> On 8/30/11 4:30 PM, "Azuri" <azuri.shah at fmr.com> thusly spake:
> >>>
> >>>>> Russell Stewart wrote:
> >>>>>> Michael Sweet wrote:
> >>>>>>
> >>>>>>> You need to create an IPP request and send it using cupsDoFileRequest
> >>>>>>> (assuming you are using a PPD file or interface script for the queue)
> >>>>>>
> >>>>>> OK, I see. So I assume that ippNewRequest() is the method to call for
> >>>>>> creating the IPP request, right?
> >>>>>
> >>>>> Yes. See the "CUPS Implementation of IPP" document for documentation
> >>>>> on the attributes and operations:
> >>>>>
> >>>>> http://www.cups.org/documentation.php/spec-ipp.html
> >>>>>
> >>>>> --
> >>>>> ______________________________________________________________________
> >>>>> Michael Sweet, Easy Software Products mike at easysw dot com
> >>>>
> >>>>
> >>>> Can you please provice code on how u did it? I am trying to do the same
> >>>> time
> >>>> but have no success so far. How can I use API's to add printer to my mac. I
> >>>> am
> >>>> developing a Coca app which provides GUI and takes user input to add
> >>>> printer
> >>>> using cups. Please let me know
> >>>> _______________________________________________
> >>>> cups-dev mailing list
> >>>> cups-dev at easysw.com
> >>>> http://lists.easysw.com/mailman/listinfo/cups-dev
> >>>
> >>> Chad Hulbert
> >>> Software Engineer
> >>> Xerox Corporation
> >>> 800 Phillips Rd
> >>> Webster, NY 14580
> >>>
> >>> p 585.427.3295 (8*707.3295)
> >>>
> >>
> >
> > _______________________________________________
> > cups-dev mailing list
> > cups-dev at easysw.com
> > http://lists.easysw.com/mailman/listinfo/cups-dev
>
> Chad Hulbert
> Software Engineer
> Xerox Corporation
> 800 Phillips Rd
> Webster, NY 14580
>
> p 585.427.3295 (8*707.3295)
>
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