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
  21
  22 int auth_getoptionenvint(const char *keyword)
  23 {
  24         char *p = auth_getoptionenv(keyword);
  25         int i;
  26
  27         if (!p) return 0;
  28
  29         i = atoi(p);
  30
  31         if (i == 0 && strchr("tTyY", *p))
  32                 i=1;   /* Convert 'true', 'TRUE', 'yes', 'YES' to 1 */
  33         free(p);
  34         return i;
  35 }
  36
  37 char *auth_getoptionenv(const char *keyword)
  38 {
  39         return auth_getoption(getenv("OPTIONS"), keyword);
  40 }
  41
  42 char *auth_getoption(const char *options, const char *keyword)
  43 {
  44         size_t keyword_l=strlen(keyword);
  45         char *p;
  46
  47         while (options)
  48         {
  49                 if (strncmp(options, keyword, keyword_l) == 0)
  50                 {
  51                         if (options[keyword_l] == 0 ||
  52                             options[keyword_l] == ',')
  53                                 return strdup("");
  54
  55                         if (options[keyword_l] == '=')
  56                         {
  57                                 options += keyword_l;
  58                                 ++options;
  59
  60                                 for (keyword_l=0;
  61                                      options[keyword_l] &&
  62                                              options[keyword_l] != ',';
  63                                      ++keyword_l)
  64                                         ;
  65
  66                                 if (!(p=malloc(keyword_l+1)))
  67                                         return NULL;
  68                                 memcpy(p, options, keyword_l);
  69                                 p[keyword_l]=0;
  70                                 return p;
  71                         }
  72                 }
  73
  74                 options=strchr(options, ',');
  75                 if (options)
  76                         ++options;
  77         }
  78         errno=ENOENT;
  79         return NULL;
  80 }