contrib/sendmail-8.14/libsm/cf.c

   1 /*
   2  * Copyright (c) 2001 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  *
   5  * By using this file, you agree to the terms and conditions set
   6  * forth in the LICENSE file which can be found at the top level of
   7  * the sendmail distribution.
   8  *
   9  */
  10
  11 #include <sm/gen.h>
  12 SM_RCSID("@(#)$Id: cf.c,v 1.6 2001/09/11 04:04:47 gshapiro Exp $")
  13
  14 #include <ctype.h>
  15 #include <errno.h>
  16
  17 #include <sm/cf.h>
  18 #include <sm/io.h>
  19 #include <sm/string.h>
  20 #include <sm/heap.h>
  21
  22 /*
  23 **  SM_CF_GETOPT -- look up option values in the sendmail.cf file
  24 **
  25 **      Open the sendmail.cf file and parse all of the 'O' directives.
  26 **      Each time one of the options named in the option vector optv
  27 **      is found, store a malloced copy of the option value in optv.
  28 **
  29 **      Parameters:
  30 **              path -- pathname of sendmail.cf file
  31 **              optc -- size of option vector
  32 **              optv -- pointer to option vector
  33 **
  34 **      Results:
  35 **              0 on success, or an errno value on failure.
  36 **              An exception is raised on malloc failure.
  37 */
  38
  39 int
  40 sm_cf_getopt(path, optc, optv)
  41         char *path;
  42         int optc;
  43         SM_CF_OPT_T *optv;
  44 {
  45         SM_FILE_T *cfp;
  46         char buf[2048];
  47         char *p;
  48         char *id;
  49         char *idend;
  50         char *val;
  51         int i;
  52
  53         cfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, path, SM_IO_RDONLY, NULL);
  54         if (cfp == NULL)
  55                 return errno;
  56
  57         while (sm_io_fgets(cfp, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL)
  58         {
  59                 p = strchr(buf, '\n');
  60                 if (p != NULL)
  61                         *p = '\0';
  62
  63                 if (buf[0] != 'O' || buf[1] != ' ')
  64                         continue;
  65
  66                 id = &buf[2];
  67                 val = strchr(id, '=');
  68                 if (val == NULL)
  69                         val = idend = id + strlen(id);
  70                 else
  71                 {
  72                         idend = val;
  73                         ++val;
  74                         while (*val == ' ')
  75                                 ++val;
  76                         while (idend > id && idend[-1] == ' ')
  77                                 --idend;
  78                         *idend = '\0';
  79                 }
  80
  81                 for (i = 0; i < optc; ++i)
  82                 {
  83                         if (sm_strcasecmp(optv[i].opt_name, id) == 0)
  84                         {
  85                                 optv[i].opt_val = sm_strdup_x(val);
  86                                 break;
  87                         }
  88                 }
  89         }
  90         if (sm_io_error(cfp))
  91         {
  92                 int save_errno = errno;
  93
  94                 (void) sm_io_close(cfp, SM_TIME_DEFAULT);
  95                 errno = save_errno;
  96                 return errno;
  97         }
  98         (void) sm_io_close(cfp, SM_TIME_DEFAULT);
  99         return 0;
 100 }