/*
 * Copyright (c) 2001 Sendmail, Inc. and its suppliers.
 *      All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 *
 */

#include <sm/gen.h>
SM_RCSID("@(#)$Id: cf.c,v 1.4 2001/02/01 02:40:21 dmoen Exp $")

#include <ctype.h>
#include <errno.h>

#include <sm/cf.h>
#include <sm/io.h>
#include <sm/string.h>
#include <sm/heap.h>

/*
**  SM_CF_GETOPT -- look up option values in the sendmail.cf file
**
**      Open the sendmail.cf file and parse all of the 'O' directives.
**      Each time one of the options named in the option vector optv
**      is found, store a malloced copy of the option value in optv.
**
**      Parameters:
**              path -- pathname of sendmail.cf file
**              optc -- size of option vector
**              optv -- pointer to option vector
**
**      Results:
**              0 on success, or an errno value on failure.
**              An exception is raised on malloc failure.
*/

int
sm_cf_getopt(path, optc, optv)
        char *path;
        int optc;
        SM_CF_OPT_T *optv;
{
        SM_FILE_T *cfp;
        char buf[2048];
        char *p;
        char *id;
        char *idend;
        char *val;
        int i;

        cfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, path, SM_IO_RDONLY, NULL);
        if (cfp == NULL)
                return errno;

        while (sm_io_fgets(cfp, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL)
        {
                p = strchr(buf, '\n');
                if (p != NULL)
                        *p = '\0';

                if (buf[0] != 'O' || buf[1] != ' ')
                        continue;

                id = &buf[2];
                val = strchr(id, '=');
                if (val == NULL)
                        val = idend = id + strlen(id);
                else
                {
                        idend = val;
                        ++val;
                        while (*val == ' ')
                                ++val;
                        while (idend > id && idend[-1] == ' ')
                                --idend;
                        *idend = '\0';
                }

                for (i = 0; i < optc; ++i)
                {
                        if (sm_strcasecmp(optv[i].opt_name, id) == 0)
                        {
                                optv[i].opt_val = sm_strdup_x(val);
                                break;
                        }
                }
        }
        if (sm_io_error(cfp))
        {
                int save_errno = errno;

                (void) sm_io_close(cfp, SM_TIME_DEFAULT);
                errno = save_errno;
                return errno;
        }
        (void) sm_io_close(cfp, SM_TIME_DEFAULT);
        return 0;
}