usr/src/cmd/sendmail/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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  12
  13 #include <sm/gen.h>
  14 SM_RCSID("@(#)$Id: cf.c,v 1.4 2001/02/01 02:40:21 dmoen Exp $")
  15
  16 #include <ctype.h>
  17 #include <errno.h>
  18
  19 #include <sm/cf.h>
  20 #include <sm/io.h>
  21 #include <sm/string.h>
  22 #include <sm/heap.h>
  23
  24 /*
  25 **  SM_CF_GETOPT -- look up option values in the sendmail.cf file
  26 **
  27 **      Open the sendmail.cf file and parse all of the 'O' directives.
  28 **      Each time one of the options named in the option vector optv
  29 **      is found, store a malloced copy of the option value in optv.
  30 **
  31 **      Parameters:
  32 **              path -- pathname of sendmail.cf file
  33 **              optc -- size of option vector
  34 **              optv -- pointer to option vector
  35 **
  36 **      Results:
  37 **              0 on success, or an errno value on failure.
  38 **              An exception is raised on malloc failure.
  39 */
  40
  41 int
  42 sm_cf_getopt(path, optc, optv)
  43         char *path;
  44         int optc;
  45         SM_CF_OPT_T *optv;
  46 {
  47         SM_FILE_T *cfp;
  48         char buf[2048];
  49         char *p;
  50         char *id;
  51         char *idend;
  52         char *val;
  53         int i;
  54
  55         cfp = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, path, SM_IO_RDONLY, NULL);
  56         if (cfp == NULL)
  57                 return errno;
  58
  59         while (sm_io_fgets(cfp, SM_TIME_DEFAULT, buf, sizeof(buf)) != NULL)
  60         {
  61                 p = strchr(buf, '\n');
  62                 if (p != NULL)
  63                         *p = '\0';
  64
  65                 if (buf[0] != 'O' || buf[1] != ' ')
  66                         continue;
  67
  68                 id = &buf[2];
  69                 val = strchr(id, '=');
  70                 if (val == NULL)
  71                         val = idend = id + strlen(id);
  72                 else
  73                 {
  74                         idend = val;
  75                         ++val;
  76                         while (*val == ' ')
  77                                 ++val;
  78                         while (idend > id && idend[-1] == ' ')
  79                                 --idend;
  80                         *idend = '\0';
  81                 }
  82
  83                 for (i = 0; i < optc; ++i)
  84                 {
  85                         if (sm_strcasecmp(optv[i].opt_name, id) == 0)
  86                         {
  87                                 optv[i].opt_val = sm_strdup_x(val);
  88                                 break;
  89                         }
  90                 }
  91         }
  92         if (sm_io_error(cfp))
  93         {
  94                 int save_errno = errno;
  95
  96                 (void) sm_io_close(cfp, SM_TIME_DEFAULT);
  97                 errno = save_errno;
  98                 return errno;
  99         }
 100         (void) sm_io_close(cfp, SM_TIME_DEFAULT);
 101         return 0;
 102 }