nest/password.c

   1 /*
   2  *      BIRD -- Password handling
   3  *
   4  *      (c) 1999 Pavel Machek <pavel@ucw.cz>
   5  *      (c) 2004 Ondrej Filip <feela@network.cz>
   6  *
   7  *      Can be freely distributed and used under the terms of the GNU GPL.
   8  */
   9
  10 #include "nest/bird.h"
  11 #include "nest/password.h"
  12 #include "lib/string.h"
  13 #include "lib/mac.h"
  14
  15 struct password_item *last_password_item = NULL;
  16
  17 struct password_item *
  18 password_find(list *l, int first_fit)
  19 {
  20   struct password_item *pi;
  21   struct password_item *pf = NULL;
  22
  23   if (l)
  24   {
  25     WALK_LIST(pi, *l)
  26     {
  27       if ((pi->genfrom < now_real) && (pi->gento > now_real))
  28       {
  29         if (first_fit)
  30           return pi;
  31
  32         if (!pf || pf->genfrom < pi->genfrom)
  33           pf = pi;
  34       }
  35     }
  36   }
  37   return pf;
  38 }
  39
  40 struct password_item *
  41 password_find_by_id(list *l, uint id)
  42 {
  43   struct password_item *pi;
  44
  45   if (!l)
  46     return NULL;
  47
  48   WALK_LIST(pi, *l)
  49     if ((pi->id == id) && (pi->accfrom <= now_real) && (now_real < pi->accto))
  50       return pi;
  51
  52   return NULL;
  53 }
  54
  55 struct password_item *
  56 password_find_by_value(list *l, char *pass, uint size)
  57 {
  58   struct password_item *pi;
  59
  60   if (!l)
  61     return NULL;
  62
  63   WALK_LIST(pi, *l)
  64     if (password_verify(pi, pass, size) && (pi->accfrom <= now_real) && (now_real < pi->accto))
  65       return pi;
  66
  67   return NULL;
  68 }
  69
  70 uint
  71 max_mac_length(list *l)
  72 {
  73   struct password_item *pi;
  74   uint val = 0;
  75
  76   if (!l)
  77     return 0;
  78
  79   WALK_LIST(pi, *l)
  80     val = MAX(val, mac_type_length(pi->alg));
  81
  82   return val;
  83 }