authoption.c

   1 /*
   2 ** Copyright 2002-2009 Double Precision, Inc.  See COPYING for
   3 ** distribution information.
   4 */
   5
   6 #if     HAVE_CONFIG_H
   7 #include        "courier_auth_config.h"
   8 #endif
   9 #include        <stdio.h>
  10 #include        <stdlib.h>
  11 #include        <string.h>
  12 #include        <errno.h>
  13 #include        <pwd.h>
  14 #if     HAVE_UNISTD_H
  15 #include        <unistd.h>
  16 #endif
  17
  18 #include        "auth.h"
  19
  20 static const char rcsid[]="$Id: authoption.c,v 1.4 2009/11/22 03:42:48 mrsam Exp $";
  21
  22
  23 int auth_getoptionenvint(const char *keyword)
  24 {
  25         char *p = auth_getoptionenv(keyword);
  26         int i;
  27
  28         if (!p) return 0;
  29
  30         i = atoi(p);
  31
  32         if (i == 0 && strchr("tTyY", *p))
  33                 i=1;   /* Convert 'true', 'TRUE', 'yes', 'YES' to 1 */
  34         free(p);
  35         return i;
  36 }
  37
  38 char *auth_getoptionenv(const char *keyword)
  39 {
  40         return auth_getoption(getenv("OPTIONS"), keyword);
  41 }
  42
  43 char *auth_getoption(const char *options, const char *keyword)
  44 {
  45         size_t keyword_l=strlen(keyword);
  46         char *p;
  47
  48         while (options)
  49         {
  50                 if (strncmp(options, keyword, keyword_l) == 0)
  51                 {
  52                         if (options[keyword_l] == 0 ||
  53                             options[keyword_l] == ',')
  54                                 return strdup("");
  55
  56                         if (options[keyword_l] == '=')
  57                         {
  58                                 options += keyword_l;
  59                                 ++options;
  60
  61                                 for (keyword_l=0;
  62                                      options[keyword_l] &&
  63                                              options[keyword_l] != ',';
  64                                      ++keyword_l)
  65                                         ;
  66
  67                                 if (!(p=malloc(keyword_l+1)))
  68                                         return NULL;
  69                                 memcpy(p, options, keyword_l);
  70                                 p[keyword_l]=0;
  71                                 return p;
  72                         }
  73                 }
  74
  75                 options=strchr(options, ',');
  76                 if (options)
  77                         ++options;
  78         }
  79         errno=ENOENT;
  80         return NULL;
  81 }