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
  15 extern int auth_generic(const char *service,
  16                         const char *authtype,
  17                         char *authdata,
  18                         int (*callback_func)(struct authinfo *, void *),
  19                         void *callback_arg);
  20
  21 static int badstr(const char *p)
  22 {
  23         while (p && *p)
  24         {
  25                 if ((int)(unsigned char)*p < ' ')
  26                         return 1;
  27                 ++p;
  28         }
  29         return 0;
  30 }
  31
  32 /* Create a new string consisting of:
  33 **  - username
  34 **  - DEFDOMAIN if username does not contain any characters from DOMAINSEP
  35 **              (or if DOMAINSEP not set, then if username does not contain
  36 **               the first char of DEFDOMAIN)
  37 **  - strings s1, s2, s3
  38 */
  39
  40 char *strdupdefdomain(const char *userid, const char *s1, const char *s2,
  41                       const char *s3)
  42 {
  43 char    *p, *q, *r;
  44
  45         q=getenv("DEFDOMAIN");
  46         if (q && q[0])
  47         {
  48                 r=getenv("DOMAINSEP");
  49                 if (r ? strpbrk(userid, r) : strchr(userid, q[0])) q = "";
  50         }
  51         else
  52                 q = "";
  53
  54         p=malloc(strlen(userid)+strlen(q)+strlen(s1)+strlen(s2)+strlen(s3)+1);
  55         if (p)
  56                 strcat(strcat(strcat(strcat(strcpy(p, userid), q), s1), s2), s3);
  57         return p;
  58 }
  59
  60 int auth_login(const char *service,
  61                const char *userid,
  62                const char *passwd,
  63                int (*callback_func)(struct authinfo *, void *),
  64                void *callback_arg)
  65
  66 {
  67         char    *p;
  68         int rc;
  69
  70         if (badstr(userid) || badstr(passwd))
  71         {
  72                 errno=EINVAL;
  73                 return -1;
  74         }
  75
  76         courier_authdebug_login_init();
  77         courier_authdebug_login( 1, "username=%s", userid );
  78         courier_authdebug_login( 2, "password=%s", passwd );
  79
  80         p = strdupdefdomain(userid, "\n", passwd, "\n");
  81         if (!p)
  82                 return (-1);
  83
  84         rc=auth_generic(service, AUTHTYPE_LOGIN, p,
  85                         callback_func,
  86                         callback_arg);
  87         free(p);
  88         return rc;
  89 }