Add Network Printer through libcups API
Azuri
azuri.shah at fmr.com
Wed Aug 31 08:17:19 PDT 2011
I think I should be using cupsAddDest and cupsSetDest to make it visible in mac print UI list, so I added the below code. but it still doesn't show up
cups_dest_t *mydest;
cups_dest_t *newdest;
int num_new_dest;
num_new_dest = cupsAddDest(printer, NULL, num_new_dest, &newdest);
mydest = cupsGetDest(printer, NULL, num_new_dest, newdest);
cupsSetDests2(http,num_new_dest, mydest);
cupsFreeDests(num_new_dest, mydest);
> The code I am using is as below. It shows up as raw printer in cups but when I go to any file and click on print this printer doesn't show up.
>
> http_t *http ;
> char *printer = "Test";
> char *device = "socket://10.105.152.49:9100";
> char *model = "deskjet.ppd";
> ipp_t *request, /* IPP Request */
> *response; /* IPP Response */
> ipp_t *request_dev, /* IPP Request */
> *response_dev; /* IPP Response */
> ipp_t *request_ppd, /* IPP Request */
> *response_ppd; /* IPP Response */
> char uri[HTTP_MAX_URI]; /* URI for printer/class */
> char uri_dev[HTTP_MAX_URI];
> char uri_ppd[HTTP_MAX_URI];
>
> /*
> * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the following
> * attributes:
> *
> * attributes-charset
> * attributes-natural-language
> * printer-uri
> */
> http = httpConnectEncrypt(cupsServer(), ippPort(), cupsEncryption());
>
> /* set printer device */
> request_dev = ippNewRequest(CUPS_ADD_PRINTER);
>
> httpAssembleURIf(HTTP_URI_CODING_ALL, uri_dev, sizeof(uri_dev), "ipp", NULL,
> "localhost", 0, "/printers/%s", printer);
> ippAddString(request_dev, IPP_TAG_OPERATION, IPP_TAG_URI,
> "printer-uri", NULL, uri_dev);
>
> /*
> * Add the device URI...
> */
>
> if (device[0] == '/')
> {
> /*
> * Convert filename to URI...
> */
>
> snprintf(uri_dev, sizeof(uri_dev), "file://%s", device);
> ippAddString(request_dev, IPP_TAG_PRINTER, IPP_TAG_URI, "device-uri", NULL,
> uri_dev);
> }
> else
> ippAddString(request_dev, IPP_TAG_PRINTER, IPP_TAG_URI, "device-uri", NULL,
> device);
>
> /*
> * Do the request and get back a response...
> */
>
> if ((response_dev = cupsDoRequest(http, request_dev, "/admin/")) == NULL)
> {
> _cupsLangPrintf(stderr, "lpadmin: %s\n", cupsLastErrorString());
>
> // return (1);
> }
> else if (response_dev->request.status.status_code > IPP_OK_CONFLICT)
> {
> _cupsLangPrintf(stderr, "lpadmin: %s\n", cupsLastErrorString());
>
> ippDelete(response_dev);
>
> // return (1);
> }
> else
> {
> ippDelete(response_dev);
>
> // return (0);
> }
>
>
> /* enable_printer */
> request = ippNewRequest(CUPS_ADD_PRINTER);
>
> httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,
> "localhost", 0, "/printers/%s", printer);
> ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
> "printer-uri", NULL, uri);
>
> ippAddInteger(request, IPP_TAG_PRINTER, IPP_TAG_ENUM, "printer-state",
> IPP_PRINTER_IDLE);
>
> ippAddBoolean(request, IPP_TAG_PRINTER, "printer-is-accepting-jobs", 1);
>
> /*
> * Do the request and get back a response...
> */
>
> if ((response = cupsDoRequest(http, request, "/admin/")) == NULL)
> {
> _cupsLangPrintf(stderr, "lpadmin: %s\n", cupsLastErrorString());
>
> //return (1);
> }
> else if (response->request.status.status_code > IPP_OK_CONFLICT)
> {
> _cupsLangPrintf(stderr, "lpadmin: %s\n", cupsLastErrorString());
>
> ippDelete(response);
>
> //return (1);
> }
> else
> {
> ippDelete(response);
>
> //return (0);
> }
>
>
>
>
>
>
> > > 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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