authmoduser3.c

   1 /*
   2 ** Copyright 1998 - 2005 Double Precision, Inc.  See COPYING for
   3 ** distribution information.
   4 */
   5
   6 #include        "auth.h"
   7 #include        "courierauthdebug.h"
   8 #include        <stdio.h>
   9 #include        <string.h>
  10 #include        <stdlib.h>
  11 #include        <ctype.h>
  12 #include        <errno.h>
  13
  14 static const char rcsid[]="$Id: authmoduser3.c,v 1.6 2005/07/02 15:40:28 mrsam Exp $";
  15
  16 extern int auth_generic(const char *service,
  17                         const char *authtype,
  18                         char *authdata,
  19                         int (*callback_func)(struct authinfo *, void *),
  20                         void *callback_arg);
  21
  22 static int badstr(const char *p)
  23 {
  24         while (p && *p)
  25         {
  26                 if ((int)(unsigned char)*p < ' ')
  27                         return 1;
  28                 ++p;
  29         }
  30         return 0;
  31 }
  32
  33 /* Create a new string consisting of:
  34 **  - username
  35 **  - DEFDOMAIN if username does not contain any characters from DOMAINSEP
  36 **              (or if DOMAINSEP not set, then if username does not contain
  37 **               the first char of DEFDOMAIN)
  38 **  - strings s1, s2, s3
  39 */
  40
  41 char *strdupdefdomain(const char *userid, const char *s1, const char *s2,
  42                       const char *s3)
  43 {
  44 char    *p, *q, *r;
  45
  46         q=getenv("DEFDOMAIN");
  47         if (q && q[0])
  48         {
  49                 r=getenv("DOMAINSEP");
  50                 if (r ? strpbrk(userid, r) : strchr(userid, q[0])) q = "";
  51         }
  52         else
  53                 q = "";
  54
  55         p=malloc(strlen(userid)+strlen(q)+strlen(s1)+strlen(s2)+strlen(s3)+1);
  56         if (p)
  57                 strcat(strcat(strcat(strcat(strcpy(p, userid), q), s1), s2), s3);
  58         return p;
  59 }
  60
  61 int auth_login(const char *service,
  62                const char *userid,
  63                const char *passwd,
  64                int (*callback_func)(struct authinfo *, void *),
  65                void *callback_arg)
  66
  67 {
  68         char    *p;
  69         int rc;
  70
  71         if (badstr(userid) || badstr(passwd))
  72         {
  73                 errno=EINVAL;
  74                 return -1;
  75         }
  76
  77         courier_authdebug_login_init();
  78         courier_authdebug_login( 1, "username=%s", userid );
  79         courier_authdebug_login( 2, "password=%s", passwd );
  80
  81         p = strdupdefdomain(userid, "\n", passwd, "\n");
  82         if (!p)
  83                 return (-1);
  84
  85         rc=auth_generic(service, AUTHTYPE_LOGIN, p,
  86                         callback_func,
  87                         callback_arg);
  88         free(p);
  89         return rc;
  90 }