Add Network Printer through libcups API
Azuri
azuri.shah at fmr.com
Wed Aug 31 06:21:06 PDT 2011
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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