[cups.development] Add Network Printer through libcups API
Chad Hulbert
Chad.Hulbert at xerox.com
Wed Aug 31 08:26:44 PDT 2011
I believe a PPD is required. If you don't have one you will need to create
something basic.
-Chad
On 8/31/11 11:17 AM, "Azuri" <azuri.shah at fmr.com> thusly spake:
> 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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> cups-dev at easysw.com
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Chad Hulbert
Software Engineer
Xerox Corporation
800 Phillips Rd
Webster, NY 14580
p 585.427.3295 (8*707.3295)
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