source: trunk/server/source3/printing/nt_printing_os2.c

/*
 *  Unix SMB/CIFS implementation.
 *  RPC Pipe client / server routines
 *  Copyright (C) Andrew Tridgell              1992-2000,
 *  Copyright (C) Jean François Micouleau      1998-2000.
 *  Copyright (C) Gerald Carter                2002-2005.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include "includes.h"
#include "printing/nt_printing_os2.h"

/****************************************************************************
 ***************************************************************************/

static char *win_driver;
static char *os2_driver;

static const char *get_win_driver(void)
{
        if (win_driver == NULL) {
                return "";
        }
        return win_driver;
}

static const char *get_os2_driver(void)
{
        if (os2_driver == NULL) {
                return "";
        }
        return os2_driver;
}

static bool set_driver_mapping(const char *from, const char *to)
{
        SAFE_FREE(win_driver);
        SAFE_FREE(os2_driver);

        win_driver = SMB_STRDUP(from);
        os2_driver = SMB_STRDUP(to);

        if (win_driver == NULL || os2_driver == NULL) {
                SAFE_FREE(win_driver);
                SAFE_FREE(os2_driver);
                return false;
        }
        return true;
}

/**
 * @internal
 *
 * @brief Map a Windows driver to a OS/2 driver.
 *
 * @param[in]  mem_ctx  The memory context to use.
 *
 * @param[in,out] pdrivername The drivername of Windows to remap.
 *
 * @return              WERR_OK on success, a corresponding WERROR on failure.
 */
WERROR spoolss_map_to_os2_driver(TALLOC_CTX *mem_ctx, const char **pdrivername)
{
        const char *mapfile = lp_os2_driver_map();
        char **lines = NULL;
        const char *drivername;
        int numlines = 0;
        int i;

        if (pdrivername == NULL || *pdrivername == NULL || *pdrivername[0] == '\0') {
                return WERR_INVALID_PARAMETER;
        }

        drivername = *pdrivername;

        if (mapfile[0] == '\0') {
                return WERR_BADFILE;
        }

        if (strequal(drivername, get_win_driver())) {
                DEBUG(3,("Mapped Windows driver %s to OS/2 driver %s\n",
                        drivername, get_os2_driver()));
                drivername = talloc_strdup(mem_ctx, get_os2_driver());
                if (drivername == NULL) {
                        return WERR_NOMEM;
                }
                *pdrivername = drivername;
                return WERR_OK;
        }

        lines = file_lines_load(mapfile, &numlines, 0, NULL);
        if (numlines == 0 || lines == NULL) {
                DEBUG(0,("No entries in OS/2 driver map %s\n", mapfile));
                TALLOC_FREE(lines);
                return WERR_EMPTY;
        }

        DEBUG(4,("Scanning OS/2 driver map %s\n",mapfile));

        for( i = 0; i < numlines; i++) {
                char *nt_name = lines[i];
                char *os2_name = strchr(nt_name, '=');

                if (os2_name == NULL) {
                        continue;
                }

                *os2_name++ = '\0';

                while (isspace(*nt_name)) {
                        nt_name++;
                }

                if (*nt_name == '\0' || strchr("#;", *nt_name)) {
                        continue;
                }

                {
                        int l = strlen(nt_name);
                        while (l && isspace(nt_name[l - 1])) {
                                nt_name[l - 1] = 0;
                                l--;
                        }
                }

                while (isspace(*os2_name)) {
                        os2_name++;
                }

                {
                        int l = strlen(os2_name);
                        while (l && isspace(os2_name[l-1])) {
                                os2_name[l-1] = 0;
                                l--;
                        }
                }

                if (strequal(nt_name, drivername)) {
                        DEBUG(3,("Mapped Windows driver %s to OS/2 driver %s\n",drivername,os2_name));
                        set_driver_mapping(drivername, os2_name);
                        drivername = talloc_strdup(mem_ctx, os2_name);
                        TALLOC_FREE(lines);
                        if (drivername == NULL) {
                                return WERR_NOMEM;
                        }
                        *pdrivername = drivername;
                        return WERR_OK;
                }
        }

        TALLOC_FREE(lines);
        return WERR_OK;
}