probing/network-printer/probe-network-printer.c

/***************************************************************************
 *
 * probe-network-printer.c : Probe for snmp printer device information
 *
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * Licensed under the Academic Free License version 2.1
 *
 **************************************************************************/

#pragma ident   "%Z%%M% %I% %E% SMI"

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <errno.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/prnio.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>

#include <libhal.h>
#include <logger.h>

#include "printer.h"

int
main(int argc, char *argv[])
{
    int ret = 1;
    char *udi;
    char *printer_address,
         *community;
    DBusError error;
    LibHalContext *ctx = NULL;
    LibHalChangeSet *cs = NULL;
    char *manufacturer = NULL,
         *model = NULL,
         *serial_number = NULL,
         *description = NULL,
         **command_set = NULL,
         *device_uri = NULL;
    extern int snmp_printer_info(char *hostname, char *community,
            char **manufacturer, char **model, char **description,
            char **serial_number, char ***command_set,
            char **device_uri);

    dbus_error_init(&error);

    if ((udi = getenv("UDI")) == NULL)
        goto out;

    printer_address = getenv("HAL_PROP_NETWORK_DEVICE_ADDRESS");
    if (printer_address == NULL)
        goto out;

    community = getenv("HAL_PROP_NETWORK_DEVICE_SNMP_COMMUNITY");
    if (community == NULL)
        community = "public";

    setup_logger();

    dbus_error_init(&error);

    if ((ctx = libhal_ctx_init_direct(&error)) == NULL)
        goto out;

    if ((cs = libhal_device_new_changeset(udi)) == NULL) {
        HAL_DEBUG(("Cannot allocate changeset"));
        goto out;
    }

    /* Probe the printer for characteristics via SNMP */
    ret = snmp_printer_info(printer_address, community, &manufacturer,
            &model, &description, &serial_number, &command_set,
            &device_uri);
    if (ret < 0) {
        HAL_DEBUG(("Cannot get snmp data for %s: %s",
                printer_address, strerror(errno)));
        goto out;
    }

    /* Add printer characteristics to the HAL device tree */
    ret = add_printer_info(cs, udi, manufacturer, model, description,
            serial_number, command_set, device_uri);
    if (ret < 0) {
        HAL_DEBUG(("Cannot add printer data for %s to %s: %s",
                printer_address, udi, strerror(errno)));
        goto out;
    }

    libhal_device_commit_changeset(ctx, cs, &error);

    ret = 0;

out:
    if (cs != NULL) {
        libhal_device_free_changeset(cs);
    }

    if (ctx != NULL) {
        if (dbus_error_is_set(&error)) {
            dbus_error_free(&error);
        }
        libhal_ctx_shutdown(ctx, &error);
        libhal_ctx_free(ctx);
    }

    return (ret);
}