appl/test/gss_common.c

   1 /*
   2  * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "test_locl.h"
  35 #include <gssapi.h>
  36 #include "gss_common.h"
  37 RCSID("$Id$");
  38
  39 void
  40 write_token (int sock, gss_buffer_t buf)
  41 {
  42     uint32_t len, net_len;
  43     OM_uint32 min_stat;
  44
  45     len = buf->length;
  46
  47     net_len = htonl(len);
  48
  49     if (net_write (sock, &net_len, 4) != 4)
  50         err (1, "write");
  51     if (net_write (sock, buf->value, len) != len)
  52         err (1, "write");
  53
  54     gss_release_buffer (&min_stat, buf);
  55 }
  56
  57 static void
  58 enet_read(int fd, void *buf, size_t len)
  59 {
  60     ssize_t ret;
  61
  62     ret = net_read (fd, buf, len);
  63     if (ret == 0)
  64         errx (1, "EOF in read");
  65     else if (ret < 0)
  66         errx (1, "read");
  67 }
  68
  69 void
  70 read_token (int sock, gss_buffer_t buf)
  71 {
  72     uint32_t len, net_len;
  73
  74     enet_read (sock, &net_len, 4);
  75     len = ntohl(net_len);
  76     buf->length = len;
  77     buf->value  = emalloc(len);
  78     enet_read (sock, buf->value, len);
  79 }
  80
  81 void
  82 gss_print_errors (int min_stat)
  83 {
  84     OM_uint32 new_stat;
  85     OM_uint32 msg_ctx = 0;
  86     gss_buffer_desc status_string;
  87     OM_uint32 ret;
  88
  89     do {
  90         ret = gss_display_status (&new_stat,
  91                                   min_stat,
  92                                   GSS_C_MECH_CODE,
  93                                   GSS_C_NO_OID,
  94                                   &msg_ctx,
  95                                   &status_string);
  96         fprintf (stderr, "%.*s\n", (int)status_string.length,
  97                  (char *)status_string.value);
  98         gss_release_buffer (&new_stat, &status_string);
  99     } while (!GSS_ERROR(ret) && msg_ctx != 0);
 100 }
 101
 102 void
 103 gss_verr(int exitval, int status, const char *fmt, va_list ap)
 104 {
 105     vwarnx (fmt, ap);
 106     gss_print_errors (status);
 107     exit (exitval);
 108 }
 109
 110 void
 111 gss_err(int exitval, int status, const char *fmt, ...)
 112 {
 113     va_list args;
 114
 115     va_start(args, fmt);
 116     gss_verr (exitval, status, fmt, args);
 117     va_end(args);
 118 }
 119
 120 gss_OID
 121 select_mech(const char *mech)
 122 {
 123     if (strcasecmp(mech, "krb5") == 0)
 124         return GSS_KRB5_MECHANISM;
 125     else if (strcasecmp(mech, "spnego") == 0)
 126         return GSS_SPNEGO_MECHANISM;
 127     else if (strcasecmp(mech, "no-oid") == 0)
 128         return GSS_C_NO_OID;
 129     else
 130         errx (1, "Unknown mechanism '%s' (spnego, krb5, no-oid)", mech);
 131 }
 132
 133 void
 134 print_gss_name(const char *prefix, gss_name_t name)
 135 {
 136     OM_uint32 maj_stat, min_stat;
 137     gss_buffer_desc name_token;
 138
 139     maj_stat = gss_display_name (&min_stat,
 140                                  name,
 141                                  &name_token,
 142                                  NULL);
 143     if (GSS_ERROR(maj_stat))
 144         gss_err (1, min_stat, "gss_display_name");
 145
 146     fprintf (stderr, "%s `%.*s'\n", prefix,
 147              (int)name_token.length,
 148              (char *)name_token.value);
 149
 150     gss_release_buffer (&min_stat, &name_token);
 151
 152 }