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backend_helper.c
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backend_helper.c
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#include "backend_helper.h"
#include <pthread.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <stdlib.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <cupsfilters/ipp.h>
#define MAX_ADDRESSES 10
#define _CUPS_NO_DEPRECATED 1
static http_t *system_conn = NULL;
static unsigned int HttpLocalTimeout = 5;
Mappings *map;
char *get_printer_name_for_cups_dest(const cups_dest_t *dest)
{
if (!dest)
return NULL;
if (dest->instance)
return g_strconcat(dest->name, "/", dest->instance, NULL);
return g_strdup(dest->name);
}
/*****************BackendObj********************************/
BackendObj *get_new_BackendObj()
{
map = get_new_Mappings();
BackendObj *b = (BackendObj *)(malloc(sizeof(BackendObj)));
b->dbus_connection = NULL;
b->dialogs = g_hash_table_new_full(g_str_hash, g_str_equal,
(GDestroyNotify)free_string,
(GDestroyNotify)free_Dialog);
b->num_frontends = 0;
b->obj_path = NULL;
b->default_printer = NULL;
return b;
}
/** Don't free the returned value; it is owned by BackendObj */
char *get_default_printer(BackendObj *b)
{
/**first query to see if the user default printer is set**/
int num_dests;
cups_dest_t *dests;
num_dests = cupsGetDests2(CUPS_HTTP_DEFAULT, &dests); /** Get the list of all destinations */
cups_dest_t *dest = cupsGetDest(NULL, NULL, num_dests, dests); /** Get the default one */
if (dest)
{
/** Return the user default printer */
char *def = get_printer_name_for_cups_dest(dest);
cupsFreeDests(num_dests, dests);
g_free(b->default_printer);
b->default_printer = def;
return def;
}
cupsFreeDests(num_dests, dests);
/** Then query the system default printer **/
ipp_t *request = ippNewRequest(IPP_OP_CUPS_GET_DEFAULT);
ipp_t *response;
ipp_attribute_t *attr;
if ((response = cupsDoRequest(CUPS_HTTP_DEFAULT, request, "/")) != NULL)
{
if ((attr = ippFindAttribute(response, "printer-name",
IPP_TAG_NAME)) != NULL)
{
g_free(b->default_printer);
b->default_printer = g_strdup(ippGetString(attr, 0, NULL));
ippDelete(response);
return b->default_printer;
}
}
ippDelete(response);
g_free(b->default_printer);
b->default_printer = NULL;
return b->default_printer;
}
void connect_to_dbus(BackendObj *b, char *obj_path)
{
b->obj_path = obj_path;
GError *error = NULL;
g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(b->skeleton),
b->dbus_connection,
obj_path,
&error);
if (error)
{
logerror("Error connecting CUPS Backend to D-Bus.\n");
}
}
void add_frontend(BackendObj *b, const char *dialog_name)
{
Dialog *d = get_new_Dialog();
g_hash_table_insert(b->dialogs, g_strdup(dialog_name), d);
b->num_frontends++;
}
void remove_frontend(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
if (d)
{
g_hash_table_remove(b->dialogs, dialog_name);
b->num_frontends--;
}
g_message("Removed Frontend entry for %s", dialog_name);
}
gboolean no_frontends(BackendObj *b)
{
if ((b->num_frontends) == 0)
return TRUE;
return FALSE;
}
Dialog *find_dialog(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
return d;
}
int *get_dialog_cancel(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
return (d ? &d->cancel : NULL);
}
void set_dialog_cancel(BackendObj *b, const char *dialog_name)
{
int *x = get_dialog_cancel(b, dialog_name);
if (x) *x = 1;
}
void reset_dialog_cancel(BackendObj *b, const char *dialog_name)
{
int *x = get_dialog_cancel(b, dialog_name);
if (x) *x = 0;
}
void set_hide_remote_printers(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
if (d) d->hide_remote = TRUE;
}
void unset_hide_remote_printers(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
if (d) d->hide_remote = FALSE;
}
void set_hide_temp_printers(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
if (d) d->hide_temp = TRUE;
}
void unset_hide_temp_printers(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)(g_hash_table_lookup(b->dialogs, dialog_name));
if (d) d->hide_temp = FALSE;
}
static int
http_timeout_cb(http_t *http,
void *user_data)
{
logdebug("HTTP timeout! (consider increasing HttpLocalTimeout/HttpRemoteTimeout value)\n");
return (0);
}
/* Connect to the system's CUPS daemon and also tell the libcups functions to
use the system's CUPS */
static http_t *
http_connect_system(void)
{
const char *server = cupsServer();
int port = ippPort();
if (!system_conn)
{
if (server[0] == '/')
logdebug("Creating http connection to CUPS daemon via domain socket: %s\n",
server);
else
logdebug("Creating http connection to CUPS daemon: %s:%d\n",
server, port);
system_conn = httpConnect2(server, port, NULL, AF_UNSPEC, cupsEncryption(), 1, 3000, NULL);
}
if (system_conn)
{
httpSetTimeout(system_conn, HttpLocalTimeout, http_timeout_cb, NULL);
}
else
{
if (server[0] == '/')
logwarn("Failed creating http connection to CUPS daemon via domain socket: %s\n",
server);
else
logwarn("Failed creating http connection to CUPS daemon: %s:%d\n",
server, port);
}
return (system_conn);
}
/* Close connection to system's CUPS */
static void
http_close_system(void)
{
logdebug("Closing connection to system's CUPS daemon.\n");
if (system_conn)
{
httpClose(system_conn);
system_conn = NULL;
}
}
/* Create a subscription for D-Bus notifications on the system's
CUPS. This makes the CUPS daemon fire up a D-Bus notifier
process. */
int create_subscription ()
{
ipp_t *req;
ipp_t *resp;
ipp_attribute_t *attr;
int id = 0;
http_t *conn = NULL;
conn = http_connect_system();
if (conn == NULL)
{
logwarn("Cannot connect to local CUPS to subscribe to notifications.\n");
return (0);
}
req = ippNewRequest(IPP_OP_CREATE_PRINTER_SUBSCRIPTIONS);
ippAddString(req, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, "/");
ippAddString(req, IPP_TAG_SUBSCRIPTION, IPP_TAG_KEYWORD,
"notify-events", NULL, "all");
ippAddString(req, IPP_TAG_SUBSCRIPTION, IPP_TAG_URI,
"notify-recipient-uri", NULL, "dbus://");
ippAddInteger(req, IPP_TAG_SUBSCRIPTION, IPP_TAG_INTEGER,
"notify-lease-duration", NOTIFY_LEASE_DURATION);
resp = cupsDoRequest(conn, req, "/");
if (!resp || cupsLastError() != IPP_STATUS_OK)
{
logwarn("Error subscribing to CUPS notifications: %s\n",
cupsLastErrorString ());
return (0);
}
attr = ippFindAttribute(resp, "notify-subscription-id", IPP_TAG_INTEGER);
if (attr)
{
id = ippGetInteger(attr, 0);
}
else
{
logwarn("ipp-create-printer-subscription response doesn't contain"
"subscription id.\n");
}
ippDelete(resp);
return (id);
}
/* Renew the D-Bus notification subscription, telling to CUPS that we
are still there and it should not let the notifier time out. */
gboolean renew_subscription (int id)
{
ipp_t *req;
ipp_t *resp;
http_t *http = NULL;
http = http_connect_system();
if (http == NULL)
{
logwarn("Cannot connect to system's CUPS to renew subscriptions!\n");
return FALSE;
}
req = ippNewRequest(IPP_OP_RENEW_SUBSCRIPTION);
ippAddInteger(req, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
"notify-subscription-id", id);
ippAddString(req, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, "/");
ippAddString(req, IPP_TAG_SUBSCRIPTION, IPP_TAG_URI,
"notify-recipient-uri", NULL, "dbus://");
ippAddInteger(req, IPP_TAG_SUBSCRIPTION, IPP_TAG_INTEGER,
"notify-lease-duration", NOTIFY_LEASE_DURATION);
resp = cupsDoRequest(http, req, "/");
if (!resp || cupsLastError() != IPP_STATUS_OK)
{
logwarn("Error renewing CUPS subscription %d: %s\n",
id, cupsLastErrorString());
http_close_system();
return FALSE;
}
ippDelete(resp);
http_close_system();
return TRUE;
}
/* Function which is called as a timeout event handler to let the
renewal of the D-Bus subscription be done to the right time. */
gboolean renew_subscription_timeout (gpointer userdata)
{
int *subscription_id = userdata;
logdebug("renew_subscription_timeout() in THREAD %ld\n", pthread_self());
if (*subscription_id <= 0 || !renew_subscription(*subscription_id))
*subscription_id = create_subscription();
return TRUE;
}
/* Cancel the D-Bus notifier subscription, so that CUPS can terminate its
notifier when we shut down. */
void cancel_subscription (int id)
{
ipp_t *req;
ipp_t *resp;
http_t *http = NULL;
if (id <= 0)
return;
http = http_connect_system();
if (http == NULL)
{
logwarn("Cannot connect to system's CUPS to cancel subscriptions.\n");
return;
}
req = ippNewRequest(IPP_OP_CANCEL_SUBSCRIPTION);
ippAddString(req, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, "/");
ippAddInteger(req, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
"notify-subscription-id", id);
resp = cupsDoRequest(http, req, "/");
if (!resp || cupsLastError() != IPP_STATUS_OK)
{
logwarn("Error canceling subscription to CUPS notifications: %s\n",
cupsLastErrorString());
http_close_system();
return;
}
ippDelete(resp);
http_close_system();
}
gboolean dialog_contains_printer(BackendObj *b, const char *dialog_name, const char *printer_name)
{
Dialog *d = g_hash_table_lookup(b->dialogs, dialog_name);
if (d == NULL || d->printers == NULL)
{
char *msg = malloc(sizeof(char) * (strlen(dialog_name) + 50));
sprintf(msg, "Can't retrieve printers for dialog %s.\n", dialog_name);
logerror(msg);
free(msg);
return FALSE;
}
if (g_hash_table_contains(d->printers, printer_name))
return TRUE;
return FALSE;
}
PrinterCUPS *add_printer_to_dialog(BackendObj *b, const char *dialog_name, const cups_dest_t *dest)
{
char *printer_name = get_printer_name_for_cups_dest(dest);
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
if (d == NULL)
{
char *msg = malloc(sizeof(char) * (strlen(dialog_name) + 50));
sprintf(msg, "Invalid dialog name %s.\n", dialog_name);
logerror(msg);
free(msg);
return NULL;
}
PrinterCUPS *p = get_new_PrinterCUPS(dest);
g_hash_table_insert(d->printers, printer_name, p);
return p;
}
void remove_printer_from_dialog(BackendObj *b, const char *dialog_name, const char *printer_name)
{
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
if (d == NULL)
{
char *msg = malloc(sizeof(char) * (strlen(printer_name) + 50));
sprintf(msg, "Unable to remove printer %s.\n", printer_name);
logwarn(msg);
free(msg);
return;
}
g_hash_table_remove(d->printers, printer_name);
}
void send_printer_added_signal(BackendObj *b, const char *dialog_name, cups_dest_t *dest)
{
if (dest == NULL)
{
logerror("Failed to send printer added signal.\n");
return;
}
char *printer_name = get_printer_name_for_cups_dest(dest);
GVariant *gv = g_variant_new(CPDB_PRINTER_ADDED_ARGS,
printer_name, //id
printer_name, //name
cups_retrieve_string(dest, "printer-info"), //info
cups_retrieve_string(dest, "printer-location"), //location
cups_retrieve_string(dest, "printer-make-and-model"),
cups_is_accepting_jobs(dest),
cups_printer_state(dest),
"CUPS");
GError *error = NULL;
g_dbus_connection_emit_signal(b->dbus_connection,
dialog_name,
b->obj_path,
"org.openprinting.PrintBackend",
CPDB_SIGNAL_PRINTER_ADDED,
gv,
&error);
g_assert_no_error(error);
}
void send_printer_removed_signal(BackendObj *b, const char *dialog_name, const char *printer_name)
{
GError *error = NULL;
g_dbus_connection_emit_signal(b->dbus_connection,
dialog_name,
b->obj_path,
"org.openprinting.PrintBackend",
CPDB_SIGNAL_PRINTER_REMOVED,
g_variant_new("(ss)", printer_name, "CUPS"),
&error);
g_assert_no_error(error);
}
void send_printer_state_changed_signal(BackendObj *b, const char *dialog_name, const char *printer_name,
const char *printer_state, gboolean printer_is_accepting_jobs)
{
GError *error = NULL;
g_dbus_connection_emit_signal(b->dbus_connection,
dialog_name,
b->obj_path,
"org.openprinting.PrintBackend",
CPDB_SIGNAL_PRINTER_STATE_CHANGED,
g_variant_new("(ssbs)", printer_name, printer_state,
printer_is_accepting_jobs, "CUPS"),
&error);
g_assert_no_error(error);
}
void notify_removed_printers(BackendObj *b, const char *dialog_name, GHashTable *new_table)
{
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
if (!d) return;
GHashTable *prev = d->printers;
GList *prevlist = g_hash_table_get_keys(prev);
logdebug("Notifying removed printers.\n");
gpointer printer_name = NULL;
while (prevlist)
{
printer_name = (char *)(prevlist->data);
if (!g_hash_table_contains(new_table, (gchar *)printer_name))
{
g_message("Printer %s removed\n", (char *)printer_name);
send_printer_removed_signal(b, dialog_name, (char *)printer_name);
remove_printer_from_dialog(b, dialog_name, (char *)printer_name);
}
prevlist = prevlist->next;
}
}
void notify_added_printers(BackendObj *b, const char *dialog_name, GHashTable *new_table)
{
GHashTableIter iter;
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
if (!d) return;
GHashTable *prev = d->printers;
logdebug("Notifying added printers.\n");
gpointer printer_name;
gpointer value;
cups_dest_t *dest = NULL;
g_hash_table_iter_init(&iter, new_table);
while (g_hash_table_iter_next(&iter, &printer_name, &value))
{
if (!g_hash_table_contains(prev, (gchar *)printer_name))
{
g_message("Printer %s added\n", (char *)printer_name);
dest = (cups_dest_t *)value;
send_printer_added_signal(b, dialog_name, dest);
add_printer_to_dialog(b, dialog_name, dest);
}
}
}
gboolean get_hide_remote(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
return d->hide_remote;
}
gboolean get_hide_temp(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
return d->hide_temp;
}
void refresh_printer_list(BackendObj *b, const char *dialog_name)
{
GHashTable *new_printers;
new_printers = cups_get_printers(get_hide_temp(b, dialog_name), get_hide_remote(b, dialog_name));
notify_removed_printers(b, dialog_name, new_printers);
notify_added_printers(b, dialog_name, new_printers);
}
GHashTable *get_dialog_printers(BackendObj *b, const char *dialog_name)
{
Dialog *d = (Dialog *)g_hash_table_lookup(b->dialogs, dialog_name);
if (d == NULL)
{
logerror("Invalid dialog name.\n");
return NULL;
}
return d->printers;
}
PrinterCUPS *get_printer_by_name(BackendObj *b, const char *dialog_name, const char *printer_name)
{
GHashTable *printers = get_dialog_printers(b, dialog_name);
g_assert_nonnull(printers);
PrinterCUPS *p = (g_hash_table_lookup(printers, printer_name));
if (p == NULL)
{
logerror("Printer '%s' does not exist for the dialog %s.\n", printer_name, dialog_name);
return NULL;
}
return p;
}
cups_dest_t *get_dest_by_name(BackendObj *b, const char *dialog_name, const char *printer_name)
{
GHashTable *printers = get_dialog_printers(b, dialog_name);
g_assert_nonnull(printers);
PrinterCUPS *p = (g_hash_table_lookup(printers, printer_name));
if (p == NULL)
{
logerror("Printer '%s' does not exist for the dialog %s.\n", printer_name, dialog_name);
return NULL;
}
return p->dest;
}
/***************************PrinterObj********************************/
PrinterCUPS *get_new_PrinterCUPS(const cups_dest_t *dest)
{
PrinterCUPS *p = (PrinterCUPS *)(malloc(sizeof(PrinterCUPS)));
/** Make a copy of dest, because there are no guarantees
* whether dest will always exist or if it will be freed**/
cups_dest_t *dest_copy = NULL;
cupsCopyDest((cups_dest_t *)dest, 0, &dest_copy);
if (dest_copy == NULL)
{
logerror("Error creating PrinterCUPS");
return NULL;
}
p->dest = dest_copy;
p->name = get_printer_name_for_cups_dest(dest_copy);
p->http = NULL;
p->dinfo = NULL;
p->stream_socket_path = NULL;
return p;
}
void free_PrinterCUPS(PrinterCUPS *p)
{
logdebug("Freeing printerCUPS \n");
cupsFreeDests(1, p->dest);
g_free(p->name);
if (p->dinfo)
{
cupsFreeDestInfo(p->dinfo);
}
}
gboolean ensure_printer_connection(PrinterCUPS *p)
{
if (p->http)
return TRUE;
int temp = FALSE;
if (cups_is_temporary(p->dest)) temp = TRUE;
p->http = cupsConnectDest(p->dest, CUPS_DEST_FLAGS_NONE, 300, NULL, NULL, 0, NULL, NULL);
if (p->http == NULL)
return FALSE;
// update dest after temporary CUPS queue has been created
if (temp)
{
cups_dest_t *new_dest = cupsGetNamedDest(p->http, p->name, NULL);
cupsFreeDests(1, p->dest);
p->dest = new_dest;
}
p->dinfo = cupsCopyDestInfo(p->http, p->dest);
if (p->dinfo == NULL)
return FALSE;
return TRUE;
}
int get_supported(PrinterCUPS *p, char ***supported_values, const char *option_name)
{
char **values;
ensure_printer_connection(p);
ipp_attribute_t *attrs =
cupsFindDestSupported(p->http, p->dest, p->dinfo, option_name);
int i, count = ippGetCount(attrs);
if (!count)
{
*supported_values = NULL;
return 0;
}
values = malloc(sizeof(char *) * count);
for (i = 0; i < count; i++)
{
values[i] = extract_ipp_attribute(attrs, i, option_name);
}
*supported_values = values;
return count;
}
char *get_orientation_default(PrinterCUPS *p)
{
const char *def_value = cupsGetOption(CUPS_ORIENTATION, p->dest->num_options, p->dest->options);
if (def_value)
{
switch (def_value[0])
{
case '0':
return g_strdup("automatic-rotation");
default:
return g_strdup(ippEnumString(CUPS_ORIENTATION, atoi(def_value)));
}
}
ensure_printer_connection(p);
ipp_attribute_t *attr = NULL;
attr = cupsFindDestDefault(p->http, p->dest, p->dinfo, CUPS_ORIENTATION);
if (!attr)
return g_strdup("NA");
const char *str = ippEnumString(CUPS_ORIENTATION, ippGetInteger(attr, 0));
if (strcmp("0", str) == 0)
str = "automatic-rotation";
return g_strdup(str);
}
int get_job_creation_attributes(PrinterCUPS *p, char ***values)
{
return get_supported(p, values, "job-creation-attributes");
}
char *get_default(PrinterCUPS *p, char *option_name)
{
/** first take care of special cases**/
if (strcmp(option_name, CUPS_ORIENTATION) == 0)
return get_orientation_default(p);
/** Generic cases next **/
ensure_printer_connection(p);
ipp_attribute_t *def_attr = cupsFindDestDefault(p->http, p->dest, p->dinfo, option_name);
const char *def_value = cupsGetOption(option_name, p->dest->num_options, p->dest->options);
/** First check the option is already there in p->dest->options **/
if (def_value)
{
if (def_attr && (ippGetValueTag(def_attr) == IPP_TAG_ENUM))
return g_strdup(ippEnumString(option_name, atoi(def_value)));
return g_strdup(def_value);
}
if (def_attr)
{
return extract_ipp_attribute(def_attr, 0, option_name);
}
return g_strdup("NA");
}
/**************Option************************************/
Option *get_NA_option()
{
Option *o = (Option *)malloc(sizeof(Option));
o->option_name = "NA";
o->default_value = "NA";
o->num_supported = 0;
o->supported_values = cpdbNewCStringArray(1);
o->supported_values[0] = "bub";
return o;
}
void print_option(const Option *opt)
{
g_message("%s", opt->option_name);
int i;
for (i = 0; i < opt->num_supported; i++)
{
logdebug(" %s\n", opt->supported_values[i]);
}
logdebug("****DEFAULT: %s\n", opt->default_value);
}
void free_options(int count, Option *opts)
{
int i, j; /**Looping variables */
for (i = 0; i < count; i++)
{
free(opts[i].option_name);
for (j = 0; j < opts[i].num_supported; j++)
{
free(opts[i].supported_values[j]);
}
free(opts[i].supported_values);
free(opts[i].default_value);
}
free(opts);
}
void unpack_option_array(GVariant *var, int num_options, Option **options)
{
Option *opt = (Option *)(malloc(sizeof(Option) * num_options));
int i, j;
char *str;
GVariantIter *iter;
GVariantIter *array_iter;
char *name, *default_val;
int num_sup;
g_variant_get(var, "a(ssia(s))", &iter);
for (i = 0; i < num_options; i++)
{
//logdebug("i = %d\n", i);
g_variant_iter_loop(iter, "(ssia(s))", &name, &default_val,
&num_sup, &array_iter);
opt[i].option_name = g_strdup(name);
opt[i].default_value = g_strdup(default_val);
opt[i].num_supported = num_sup;
opt[i].supported_values = cpdbNewCStringArray(num_sup);
for (j = 0; j < num_sup; j++)
{
g_variant_iter_loop(array_iter, "(s)", &str);
opt[i].supported_values[j] = g_strdup(str); //mem
}
print_option(&opt[i]);
}
*options = opt;
}
GVariant *pack_option(const Option *opt)
{
char *group_name = cpdbGetGroup(opt->option_name);
GVariant **t = g_new(GVariant *, 5);
t[0] = g_variant_new_string(opt->option_name);
t[1] = g_variant_new_string(group_name);
t[2] = g_variant_new_string(opt->default_value);
t[3] = g_variant_new_int32(opt->num_supported);
t[4] = cpdbPackStringArray(opt->num_supported, opt->supported_values);
GVariant *tuple_variant = g_variant_new_tuple(t, 5);
g_free(t);
free(group_name);
return tuple_variant;
}
GVariant *pack_media(const Media *media)
{
GVariant **t = g_new(GVariant *, 5);
t[0] = g_variant_new_string(media->name);
t[1] = g_variant_new_int32(media->width);
t[2] = g_variant_new_int32(media->length);
t[3] = g_variant_new_int32(media->num_margins);
t[4] = cpdbPackMediaArray(media->num_margins, media->margins);
GVariant *tuple_variant = g_variant_new_tuple(t, 5);
g_free(t);
return tuple_variant;
}
int get_all_options(PrinterCUPS *p, Option **options)
{
ensure_printer_connection(p);
char **option_names;
int num_options = get_job_creation_attributes(p, &option_names); /** number of options to be returned**/
/** Addition options not present in "job-creation-attributes" **/
char *additional_options[] = {"media-source", "media-type"};
int sz = sizeof(additional_options) / sizeof(char *);
/** Add additional attributes to current option_names list **/
option_names = realloc(option_names, sizeof(char *) * (num_options+sz));
for (int i=0; i<sz; i++)
option_names[num_options+i] = g_strdup(additional_options[i]);
num_options += sz;
int i, j, optsIndex = 0; /**Looping variables **/
Option *opts = (Option *)(malloc(sizeof(Option) * (num_options+20))); /**Option array, which will be filled **/
ipp_attribute_t *vals; /** Variable to store the values of the options **/
for (i = 0; i < num_options; i++)
{
// Hardcode CUPS specific option
if(
(strcmp(option_names[i], "booklet") == 0) ||
(strcmp(option_names[i], "ipp-attribute-fidelity") == 0) ||
(strcmp(option_names[i], "job-sheets") == 0) ||
(strcmp(option_names[i], "media") == 0) ||
(strcmp(option_names[i], "media-col") == 0) ||
(strcmp(option_names[i], "mirror") == 0) ||
(strcmp(option_names[i], "multiple-document-handling") == 0) ||
(strcmp(option_names[i], "number-up") == 0) ||
(strcmp(option_names[i], "number-up-layout") == 0) ||
(strcmp(option_names[i], "orientation-requested") == 0) ||
(strcmp(option_names[i], "page-border") == 0) ||
(strcmp(option_names[i], "page-delivery") == 0) ||
(strcmp(option_names[i], "page-set") == 0) ||
(strcmp(option_names[i], "position") == 0) ||
(strcmp(option_names[i], "print-scaling") == 0)
)
continue;
opts[optsIndex].option_name = option_names[i];
vals = cupsFindDestSupported(p->http, p->dest, p->dinfo, option_names[i]);
if (vals)
opts[optsIndex].num_supported = ippGetCount(vals);
else
opts[optsIndex].num_supported = 0;
/** Retreive all the supported values for that option **/
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
for (j = 0; j < opts[optsIndex].num_supported; j++)
{
opts[optsIndex].supported_values[j] = extract_ipp_attribute(vals, j, option_names[i]);
if (opts[optsIndex].supported_values[j] == NULL)
{
opts[optsIndex].supported_values[j] = g_strdup("NA");
}
}
/** Retrieve the default value for that option **/
opts[optsIndex].default_value = get_default(p, option_names[i]);
if (opts[optsIndex].default_value == NULL)
{
opts[optsIndex].default_value = g_strdup("NA");
}
optsIndex++;
}
/* Add the booklet option */
opts[optsIndex].option_name = g_strdup("booklet");
opts[optsIndex].num_supported = 3;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("off");
opts[optsIndex].supported_values[1] = g_strdup("on");
opts[optsIndex].supported_values[2] = g_strdup("shuffle-only");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
optsIndex++;
/* Add the ipp-attribute-fidelity option */
opts[optsIndex].option_name = g_strdup("ipp-attribute-fidelity");
opts[optsIndex].num_supported = 2;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("off");
opts[optsIndex].supported_values[1] = g_strdup("on");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
optsIndex++;
/* Add the job-sheets option */
opts[optsIndex].option_name = g_strdup("job-sheets");
opts[optsIndex].num_supported = 8;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("none");
opts[optsIndex].supported_values[1] = g_strdup("classified");
opts[optsIndex].supported_values[2] = g_strdup("confidential");
opts[optsIndex].supported_values[3] = g_strdup("form");
opts[optsIndex].supported_values[4] = g_strdup("secret");
opts[optsIndex].supported_values[5] = g_strdup("standard");
opts[optsIndex].supported_values[6] = g_strdup("topsecret");
opts[optsIndex].supported_values[7] = g_strdup("unclassified");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup("none,none");
}
optsIndex++;
/* Add the mirror option */
opts[optsIndex].option_name = g_strdup("mirror");
opts[optsIndex].num_supported = 2;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("off");
opts[optsIndex].supported_values[1] = g_strdup("on");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
optsIndex++;
/* Add the multiple-document-handling option */
opts[optsIndex].option_name = g_strdup("multiple-document-handling");
opts[optsIndex].num_supported = 2;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("separate-documents-uncollated-copies");
opts[optsIndex].supported_values[1] = g_strdup("separate-documents-collated-copies");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
optsIndex++;
/* Add the number-up option */
opts[optsIndex].option_name = g_strdup("number-up");
opts[optsIndex].num_supported = 6;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("1");
opts[optsIndex].supported_values[1] = g_strdup("2");
opts[optsIndex].supported_values[2] = g_strdup("4");
opts[optsIndex].supported_values[3] = g_strdup("6");
opts[optsIndex].supported_values[4] = g_strdup("9");
opts[optsIndex].supported_values[5] = g_strdup("16");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
optsIndex++;
/* Add the number-up-layout option */
opts[optsIndex].option_name = g_strdup("number-up-layout");
opts[optsIndex].num_supported = 8;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("lrtb");
opts[optsIndex].supported_values[1] = g_strdup("lrbt");
opts[optsIndex].supported_values[2] = g_strdup("rltb");
opts[optsIndex].supported_values[3] = g_strdup("rlbt");
opts[optsIndex].supported_values[4] = g_strdup("tblr");
opts[optsIndex].supported_values[5] = g_strdup("tbrl");
opts[optsIndex].supported_values[6] = g_strdup("btlr");
opts[optsIndex].supported_values[7] = g_strdup("btrl");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
optsIndex++;
/* Add the orientation-requested option */
opts[optsIndex].option_name = g_strdup("orientation-requested");
opts[optsIndex].num_supported = 4;
opts[optsIndex].supported_values = cpdbNewCStringArray(opts[optsIndex].num_supported);
opts[optsIndex].supported_values[0] = g_strdup("3");
opts[optsIndex].supported_values[1] = g_strdup("4");
opts[optsIndex].supported_values[2] = g_strdup("5");
opts[optsIndex].supported_values[3] = g_strdup("6");
opts[optsIndex].default_value = get_default(p, opts[optsIndex].option_name);
if (strcmp(opts[optsIndex].default_value, "NA") == 0)
{
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
}
else
{
if (strcmp(opts[optsIndex].default_value, "potrait") == 0)
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[0]);
else if (strcmp(opts[optsIndex].default_value, "landscape") == 0)
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[1]);
else if (strcmp(opts[optsIndex].default_value, "reverse-landscape") == 0)
opts[optsIndex].default_value = g_strdup(opts[optsIndex].supported_values[2]);
else if (strcmp(opts[optsIndex].default_value, "reverse-potrait") == 0)