/*
* call-seq:
* print_job.cancel -> true or false
*
* Cancel the current job. Returns true if successful, false otherwise.
*/
static VALUE cups_cancel(VALUE self)
{
VALUE printer, job_id;
printer = rb_iv_get(self, "@printer");
job_id = rb_iv_get(self, "@job_id");
if (NIL_P(job_id)) {
return Qfalse; // If @job_id is nil
} else { // Otherwise attempt to cancel
int job = NUM2INT(job_id);
char *target = RSTRING_PTR(printer); // Target printer string
int cancellation;
cancellation = cupsCancelJob(target, job);
return Qtrue;
}
}
void
cgiPrintCommand(http_t *http, /* I - Connection to server */
const char *dest, /* I - Destination printer */
const char *command, /* I - Command to send */
const char *title) /* I - Page/job title */
{
int job_id; /* Command file job */
char uri[HTTP_MAX_URI], /* Job URI */
resource[1024], /* Printer resource path */
refresh[1024], /* Refresh URL */
command_file[1024]; /* Command "file" */
http_status_t status; /* Document status */
cups_option_t hold_option; /* job-hold-until option */
const char *user; /* User name */
ipp_t *request, /* Get-Job-Attributes request */
*response; /* Get-Job-Attributes response */
ipp_attribute_t *attr; /* Current job attribute */
static const char * const job_attrs[] =/* Job attributes we want */
{
"job-state",
"job-printer-state-message"
};
/*
* Create the CUPS command file...
*/
snprintf(command_file, sizeof(command_file), "#CUPS-COMMAND\n%s\n", command);
/*
* Show status...
*/
if (cgiSupportsMultipart())
{
cgiStartMultipart();
cgiStartHTML(title);
cgiCopyTemplateLang("command.tmpl");
cgiEndHTML();
fflush(stdout);
}
/*
* Send the command file job...
*/
hold_option.name = "job-hold-until";
hold_option.value = "no-hold";
if ((user = getenv("REMOTE_USER")) != NULL)
cupsSetUser(user);
else
cupsSetUser("anonymous");
if ((job_id = cupsCreateJob(http, dest, title,
1, &hold_option)) < 1)
{
cgiSetVariable("MESSAGE", cgiText(_("Unable to send command to printer driver")));
cgiSetVariable("ERROR", cupsLastErrorString());
cgiStartHTML(title);
cgiCopyTemplateLang("error.tmpl");
cgiEndHTML();
if (cgiSupportsMultipart())
cgiEndMultipart();
return;
}
status = cupsStartDocument(http, dest, job_id, NULL, CUPS_FORMAT_COMMAND, 1);
if (status == HTTP_CONTINUE)
status = cupsWriteRequestData(http, command_file,
strlen(command_file));
if (status == HTTP_CONTINUE)
cupsFinishDocument(http, dest);
if (cupsLastError() >= IPP_REDIRECTION_OTHER_SITE)
{
cgiSetVariable("MESSAGE", cgiText(_("Unable to send command to printer driver")));
cgiSetVariable("ERROR", cupsLastErrorString());
cgiStartHTML(title);
cgiCopyTemplateLang("error.tmpl");
cgiEndHTML();
if (cgiSupportsMultipart())
cgiEndMultipart();
cupsCancelJob(dest, job_id);
return;
}
/*
* Wait for the job to complete...
*/
if (cgiSupportsMultipart())
{
for (;;)
{
/*
* Get the current job state...
*/
snprintf(uri, sizeof(uri), "ipp://localhost/jobs/%d", job_id);
request = ippNewRequest(IPP_GET_JOB_ATTRIBUTES);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri",
NULL, uri);
if (user)
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
"requesting-user-name", NULL, user);
ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
"requested-attributes", 2, NULL, job_attrs);
if ((response = cupsDoRequest(http, request, "/")) != NULL)
cgiSetIPPVars(response, NULL, NULL, NULL, 0);
attr = ippFindAttribute(response, "job-state", IPP_TAG_ENUM);
if (!attr || attr->values[0].integer >= IPP_JOB_STOPPED ||
attr->values[0].integer == IPP_JOB_HELD)
{
ippDelete(response);
break;
}
/*
* Job not complete, so update the status...
*/
ippDelete(response);
cgiStartHTML(title);
cgiCopyTemplateLang("command.tmpl");
cgiEndHTML();
fflush(stdout);
sleep(5);
}
}
/*
* Send the final page that reloads the printer's page...
*/
snprintf(resource, sizeof(resource), "/printers/%s", dest);
cgiFormEncode(uri, resource, sizeof(uri));
snprintf(refresh, sizeof(refresh), "5;URL=%s", uri);
cgiSetVariable("refresh_page", refresh);
cgiStartHTML(title);
cgiCopyTemplateLang("command.tmpl");
cgiEndHTML();
if (cgiSupportsMultipart())
cgiEndMultipart();
}
int /* O - Exit status */
main(int argc, /* I - Number of command-line arguments */
char *argv[]) /* I - Command-line arguments */
{
http_t *http; /* HTTP connection to server */
int i; /* Looping var */
int job_id; /* Job ID */
const char *dest; /* Destination printer */
char *instance; /* Pointer to instance name */
char uri[1024]; /* Printer or job URI */
ipp_t *request; /* IPP request */
ipp_t *response; /* IPP response */
ipp_op_t op; /* Operation */
int num_dests; /* Number of destinations */
cups_dest_t *dests, /* Destinations */
*defdest; /* Default destination */
http_encryption_t encryption; /* Encryption? */
_cupsSetLocale(argv);
/*
* Setup to cancel individual print jobs...
*/
op = IPP_CANCEL_JOB;
job_id = 0;
dest = NULL;
response = NULL;
http = NULL;
encryption = cupsEncryption();
/*
* Open a connection to the server...
*/
if ((http = httpConnectEncrypt(cupsServer(), ippPort(), encryption)) == NULL)
{
_cupsLangPuts(stderr, _("lprm: Unable to contact server!\n"));
return (1);
}
num_dests = cupsGetDests2(http, &dests);
defdest = cupsGetDest(NULL, NULL, num_dests, dests);
dest = defdest ? defdest->name : NULL;
/*
* Process command-line arguments...
*/
for (i = 1; i < argc; i ++)
if (argv[i][0] == '-' && argv[i][1] != '\0')
switch (argv[i][1])
{
case 'E' : /* Encrypt */
#ifdef HAVE_SSL
encryption = HTTP_ENCRYPT_REQUIRED;
httpEncryption(http, encryption);
cupsSetEncryption(encryption);
#else
_cupsLangPrintf(stderr,
_("%s: Sorry, no encryption support compiled in!\n"),
argv[0]);
#endif /* HAVE_SSL */
break;
case 'P' : /* Cancel jobs on a printer */
if (argv[i][2])
dest = argv[i] + 2;
else
{
i ++;
dest = argv[i];
}
if ((instance = strchr(dest, '/')) != NULL)
*instance = '\0';
if (cupsGetDest(dest, NULL, num_dests, dests) == NULL)
{
_cupsLangPrintf(stderr,
_("%s: Error - unknown destination \"%s\"!\n"),
argv[0], dest);
cupsFreeDests(num_dests, dests);
httpClose(http);
return(1);
}
break;
case 'U' : /* Username */
if (argv[i][2] != '\0')
cupsSetUser(argv[i] + 2);
else
{
i ++;
if (i >= argc)
{
_cupsLangPrintf(stderr,
_("%s: Error - expected username after "
"\'-U\' option!\n"),
argv[0]);
return (1);
}
cupsSetUser(argv[i]);
}
break;
case 'h' : /* Connect to host */
if (argv[i][2] != '\0')
cupsSetServer(argv[i] + 2);
else
{
i ++;
if (i >= argc)
{
_cupsLangPrintf(stderr,
_("%s: Error - expected hostname after "
"\'-h\' option!\n"),
argv[0]);
return (1);
}
else
cupsSetServer(argv[i]);
}
httpClose(http);
cupsFreeDests(num_dests, dests);
if ((http = httpConnectEncrypt(cupsServer(), ippPort(),
encryption)) == NULL)
{
_cupsLangPuts(stderr, _("lprm: Unable to contact server!\n"));
return (1);
}
num_dests = cupsGetDests2(http, &dests);
defdest = cupsGetDest(NULL, NULL, num_dests, dests);
dest = defdest ? defdest->name : NULL;
break;
default :
_cupsLangPrintf(stderr,
_("%s: Error - unknown option \'%c\'!\n"),
argv[0], argv[i][1]);
cupsFreeDests(num_dests, dests);
httpClose(http);
return (1);
}
else
{
/*
* Cancel a job or printer...
*/
if (isdigit(argv[i][0] & 255) &&
cupsGetDest(argv[i], NULL, num_dests, dests) == NULL)
{
dest = NULL;
op = IPP_CANCEL_JOB;
job_id = atoi(argv[i]);
}
else if (!strcmp(argv[i], "-"))
{
/*
* Cancel all jobs
*/
op = IPP_PURGE_JOBS;
}
else
{
dest = argv[i];
job_id = 0;
}
/*
* Build an IPP request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
* printer-uri + job-id *or* job-uri
* [requesting-user-name]
*/
request = ippNewRequest(op);
if (dest)
{
httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,
"localhost", 0, "/printers/%s", dest);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, uri);
ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_INTEGER, "job-id",
job_id);
}
else
{
sprintf(uri, "ipp://localhost/jobs/%d", job_id);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL,
uri);
}
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
"requesting-user-name", NULL, cupsUser());
/*
* Do the request and get back a response...
*/
if (op == IPP_PURGE_JOBS)
response = cupsDoRequest(http, request, "/admin/");
else
response = cupsDoRequest(http, request, "/jobs/");
ippDelete(response);
if (cupsLastError() > IPP_OK_CONFLICT)
{
_cupsLangPrintf(stderr, "%s: %s\n", argv[0], cupsLastErrorString());
cupsFreeDests(num_dests, dests);
httpClose(http);
return (1);
}
}
/*
* If nothing has been canceled yet, cancel the current job on the specified
* (or default) printer...
*/
if (response == NULL)
if (!cupsCancelJob(dest, 0))
{
_cupsLangPrintf(stderr, "%s: %s\n", argv[0], cupsLastErrorString());
cupsFreeDests(num_dests, dests);
httpClose(http);
return (1);
}
cupsFreeDests(num_dests, dests);
httpClose(http);
return (0);
}
