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cups/cgi-bin/printers.c

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/*
* Printer status CGI for CUPS.
*
* Copyright 2007-2016 by Apple Inc.
* Copyright 1997-2006 by Easy Software Products.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
*/
/*
* Include necessary headers...
*/
#include "cgi-private.h"
#include <errno.h>
/*
* Local functions...
*/
static void do_printer_op(http_t *http, const char *printer, ipp_op_t op,
const char *title);
static void show_all_printers(http_t *http, const char *username);
static void show_printer(http_t *http, const char *printer);
/*
* 'main()' - Main entry for CGI.
*/
int /* O - Exit status */
main(void)
{
const char *printer; /* Printer name */
const char *user; /* Username */
http_t *http; /* Connection to the server */
ipp_t *request, /* IPP request */
*response; /* IPP response */
ipp_attribute_t *attr; /* IPP attribute */
const char *op; /* Operation to perform, if any */
static const char *def_attrs[] = /* Attributes for default printer */
{
"printer-name",
"printer-uri-supported"
};
/*
* Get any form variables...
*/
cgiInitialize();
op = cgiGetVariable("OP");
/*
* Set the web interface section...
*/
cgiSetVariable("SECTION", "printers");
cgiSetVariable("REFRESH_PAGE", "");
/*
* See if we are displaying a printer or all printers...
*/
if ((printer = getenv("PATH_INFO")) != NULL)
{
printer ++;
if (!*printer)
printer = NULL;
if (printer)
cgiSetVariable("PRINTER_NAME", printer);
}
/*
* See who is logged in...
*/
user = getenv("REMOTE_USER");
/*
* Connect to the HTTP server...
*/
http = httpConnectEncrypt(cupsServer(), ippPort(), cupsEncryption());
/*
* Get the default printer...
*/
if (!op || !cgiIsPOST())
{
/*
* Get the default destination...
*/
request = ippNewRequest(CUPS_GET_DEFAULT);
ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_KEYWORD,
"requested-attributes",
sizeof(def_attrs) / sizeof(def_attrs[0]), NULL, def_attrs);
if ((response = cupsDoRequest(http, request, "/")) != NULL)
{
if ((attr = ippFindAttribute(response, "printer-name", IPP_TAG_NAME)) != NULL)
cgiSetVariable("DEFAULT_NAME", attr->values[0].string.text);
if ((attr = ippFindAttribute(response, "printer-uri-supported", IPP_TAG_URI)) != NULL)
{
char url[HTTP_MAX_URI]; /* New URL */
cgiSetVariable("DEFAULT_URI",
cgiRewriteURL(attr->values[0].string.text,
url, sizeof(url), NULL));
}
ippDelete(response);
}
/*
* See if we need to show a list of printers or the status of a
* single printer...
*/
if (!printer)
show_all_printers(http, user);
else
show_printer(http, printer);
}
else if (printer)
{
if (!*op)
{
const char *server_port = getenv("SERVER_PORT");
/* Port number string */
int port = atoi(server_port ? server_port : "0");
/* Port number */
char uri[1024]; /* URL */
httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri),
getenv("HTTPS") ? "https" : "http", NULL,
getenv("SERVER_NAME"), port, "/printers/%s", printer);
printf("Location: %s\n\n", uri);
}
else if (!strcmp(op, "start-printer"))
do_printer_op(http, printer, IPP_RESUME_PRINTER,
cgiText(_("Resume Printer")));
else if (!strcmp(op, "stop-printer"))
do_printer_op(http, printer, IPP_PAUSE_PRINTER,
cgiText(_("Pause Printer")));
else if (!strcmp(op, "accept-jobs"))
do_printer_op(http, printer, CUPS_ACCEPT_JOBS, cgiText(_("Accept Jobs")));
else if (!strcmp(op, "reject-jobs"))
do_printer_op(http, printer, CUPS_REJECT_JOBS, cgiText(_("Reject Jobs")));
else if (!strcmp(op, "cancel-jobs"))
do_printer_op(http, printer, IPP_OP_CANCEL_JOBS, cgiText(_("Cancel Jobs")));
else if (!_cups_strcasecmp(op, "print-self-test-page"))
cgiPrintCommand(http, printer, "PrintSelfTestPage",
cgiText(_("Print Self-Test Page")));
else if (!_cups_strcasecmp(op, "clean-print-heads"))
cgiPrintCommand(http, printer, "Clean all",
cgiText(_("Clean Print Heads")));
else if (!_cups_strcasecmp(op, "print-test-page"))
cgiPrintTestPage(http, printer);
else if (!_cups_strcasecmp(op, "move-jobs"))
cgiMoveJobs(http, printer, 0);
else
{
/*
* Unknown/bad operation...
*/
cgiStartHTML(printer);
cgiCopyTemplateLang("error-op.tmpl");
cgiEndHTML();
}
}
else
{
/*
* Unknown/bad operation...
*/
cgiStartHTML(cgiText(_("Printers")));
cgiCopyTemplateLang("error-op.tmpl");
cgiEndHTML();
}
/*
* Close the HTTP server connection...
*/
httpClose(http);
/*
* Return with no errors...
*/
return (0);
}
/*
* 'do_printer_op()' - Do a printer operation.
*/
static void
do_printer_op(http_t *http, /* I - HTTP connection */
const char *printer, /* I - Printer name */
ipp_op_t op, /* I - Operation to perform */
const char *title) /* I - Title of page */
{
ipp_t *request; /* IPP request */
char uri[HTTP_MAX_URI], /* Printer URI */
resource[HTTP_MAX_URI]; /* Path for request */
/*
* Build a printer request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
* printer-uri
*/
request = ippNewRequest(op);
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);
/*
* Do the request and get back a response...
*/
snprintf(resource, sizeof(resource), "/printers/%s", printer);
ippDelete(cupsDoRequest(http, request, resource));
if (cupsLastError() == IPP_NOT_AUTHORIZED)
{
puts("Status: 401\n");
exit(0);
}
else if (cupsLastError() > IPP_OK_CONFLICT)
{
cgiStartHTML(title);
cgiShowIPPError(_("Unable to do maintenance command"));
}
else
{
/*
* Redirect successful updates back to the printer page...
*/
char url[1024], /* Printer/class URL */
refresh[1024]; /* Refresh URL */
cgiRewriteURL(uri, url, sizeof(url), NULL);
cgiFormEncode(uri, url, sizeof(uri));
snprintf(refresh, sizeof(refresh), "5;URL=%s", uri);
cgiSetVariable("refresh_page", refresh);
cgiStartHTML(title);
if (op == IPP_PAUSE_PRINTER)
cgiCopyTemplateLang("printer-stop.tmpl");
else if (op == IPP_RESUME_PRINTER)
cgiCopyTemplateLang("printer-start.tmpl");
else if (op == CUPS_ACCEPT_JOBS)
cgiCopyTemplateLang("printer-accept.tmpl");
else if (op == CUPS_REJECT_JOBS)
cgiCopyTemplateLang("printer-reject.tmpl");
else if (op == IPP_OP_CANCEL_JOBS)
cgiCopyTemplateLang("printer-cancel-jobs.tmpl");
}
cgiEndHTML();
}
/*
* 'show_all_printers()' - Show all printers...
*/
static void
show_all_printers(http_t *http, /* I - Connection to server */
const char *user) /* I - Username */
{
int i; /* Looping var */
ipp_t *request, /* IPP request */
*response; /* IPP response */
cups_array_t *printers; /* Array of printer objects */
ipp_attribute_t *printer; /* Printer object */
int first, /* First printer to show */
count; /* Number of printers */
const char *var; /* Form variable */
void *search; /* Search data */
char val[1024]; /* Form variable */
fprintf(stderr, "DEBUG: show_all_printers(http=%p, user=\"%s\")\n",
http, user ? user : "(null)");
/*
* Show the standard header...
*/
cgiStartHTML(cgiText(_("Printers")));
/*
* Build a CUPS_GET_PRINTERS request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
* printer-type
* printer-type-mask
* requesting-user-name
*/
request = ippNewRequest(CUPS_GET_PRINTERS);
ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_ENUM,
"printer-type", 0);
ippAddInteger(request, IPP_TAG_OPERATION, IPP_TAG_ENUM,
"printer-type-mask", CUPS_PRINTER_CLASS);
if (user)
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
"requesting-user-name", NULL, user);
cgiGetAttributes(request, "printers.tmpl");
/*
* Do the request and get back a response...
*/
if ((response = cupsDoRequest(http, request, "/")) != NULL)
{
/*
* Get a list of matching job objects.
*/
if ((var = cgiGetVariable("QUERY")) != NULL &&
!cgiGetVariable("CLEAR"))
search = cgiCompileSearch(var);
else
search = NULL;
printers = cgiGetIPPObjects(response, search);
count = cupsArrayCount(printers);
if (search)
cgiFreeSearch(search);
/*
* Figure out which printers to display...
*/
if ((var = cgiGetVariable("FIRST")) != NULL)
first = atoi(var);
else
first = 0;
if (first >= count)
first = count - CUPS_PAGE_MAX;
first = (first / CUPS_PAGE_MAX) * CUPS_PAGE_MAX;
if (first < 0)
first = 0;
snprintf(val, sizeof(val), "%d", count);
cgiSetVariable("TOTAL", val);
for (i = 0, printer = (ipp_attribute_t *)cupsArrayIndex(printers, first);
i < CUPS_PAGE_MAX && printer;
i ++, printer = (ipp_attribute_t *)cupsArrayNext(printers))
cgiSetIPPObjectVars(printer, NULL, i);
/*
* Save navigation URLs...
*/
cgiSetVariable("THISURL", "/printers/");
if (first > 0)
{
snprintf(val, sizeof(val), "%d", first - CUPS_PAGE_MAX);
cgiSetVariable("PREV", val);
}
if ((first + CUPS_PAGE_MAX) < count)
{
snprintf(val, sizeof(val), "%d", first + CUPS_PAGE_MAX);
cgiSetVariable("NEXT", val);
}
if (count > CUPS_PAGE_MAX)
{
snprintf(val, sizeof(val), "%d", CUPS_PAGE_MAX * (count / CUPS_PAGE_MAX));
cgiSetVariable("LAST", val);
}
/*
* Then show everything...
*/
cgiCopyTemplateLang("search.tmpl");
cgiCopyTemplateLang("printers-header.tmpl");
if (count > CUPS_PAGE_MAX)
cgiCopyTemplateLang("pager.tmpl");
cgiCopyTemplateLang("printers.tmpl");
if (count > CUPS_PAGE_MAX)
cgiCopyTemplateLang("pager.tmpl");
/*
* Delete the response...
*/
cupsArrayDelete(printers);
ippDelete(response);
}
else
{
/*
* Show the error...
*/
cgiShowIPPError(_("Unable to get printer list"));
}
cgiEndHTML();
}
/*
* 'show_printer()' - Show a single printer.
*/
static void
show_printer(http_t *http, /* I - Connection to server */
const char *printer) /* I - Name of printer */
{
ipp_t *request, /* IPP request */
*response; /* IPP response */
ipp_attribute_t *attr; /* IPP attribute */
char uri[HTTP_MAX_URI]; /* Printer URI */
char refresh[1024]; /* Refresh URL */
fprintf(stderr, "DEBUG: show_printer(http=%p, printer=\"%s\")\n",
http, printer ? printer : "(null)");
/*
* Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
* printer-uri
*/
request = ippNewRequest(IPP_GET_PRINTER_ATTRIBUTES);
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);
cgiGetAttributes(request, "printer.tmpl");
/*
* Do the request and get back a response...
*/
if ((response = cupsDoRequest(http, request, "/")) != NULL)
{
/*
* Got the result; set the CGI variables and check the status of a
* single-queue request...
*/
cgiSetIPPVars(response, NULL, NULL, NULL, 0);
if (printer && (attr = ippFindAttribute(response, "printer-state",
IPP_TAG_ENUM)) != NULL &&
attr->values[0].integer == IPP_PRINTER_PROCESSING)
{
/*
* Printer is processing - automatically refresh the page until we
* are done printing...
*/
cgiFormEncode(uri, printer, sizeof(uri));
snprintf(refresh, sizeof(refresh), "10;URL=/printers/%s", uri);
cgiSetVariable("refresh_page", refresh);
}
/*
* Delete the response...
*/
ippDelete(response);
/*
* Show the standard header...
*/
cgiStartHTML(printer);
/*
* Show the printer status...
*/
cgiCopyTemplateLang("printer.tmpl");
/*
* Show jobs for the specified printer...
*/
cgiCopyTemplateLang("printer-jobs-header.tmpl");
cgiShowJobs(http, printer);
}
else
{
/*
* Show the IPP error...
*/
cgiStartHTML(printer);
cgiShowIPPError(_("Unable to get printer status"));
}
cgiEndHTML();
}
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