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code for token delegation. From Daniel Kouril <kouril@ics.muni.cz> and Miroslav Ruda <ruda@ics.muni.cz>

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@8429 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
2000-06-21 02:32:38 +00:00
parent 23490da719
commit 7d7194da08
14 changed files with 828 additions and 66 deletions
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59
lib/gssapi/8003.c
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@@ -90,12 +90,20 @@ krb5_error_code
gssapi_krb5_create_8003_checksum (
const gss_channel_bindings_t input_chan_bindings,
OM_uint32 flags,
krb5_data *fwd_data,
Checksum *result)
{
u_char *p;
/*
* see rfc1964 (section 1.1.1 (Initial Token), and the checksum value
* field's format)
*/
result->cksumtype = 0x8003;
result->checksum.length = 24;
if (fwd_data->length > 0 && (flags & GSS_C_DELEG_FLAG))
result->checksum.length = 24 + 4 + fwd_data->length;
else
result->checksum.length = 24;
result->checksum.data = malloc (result->checksum.length);
if (result->checksum.data == NULL)
return ENOMEM;
@@ -111,8 +119,31 @@ gssapi_krb5_create_8003_checksum (
p += 16;
encode_om_uint32 (flags, p);
p += 4;
if (fwd_data->length > 0 && (flags & GSS_C_DELEG_FLAG)) {
#if 0
u_char *tmp;
result->checksum.length = 28 + fwd_data->length;
tmp = realloc(result->checksum.data, result->checksum.length);
if (tmp == NULL)
return ENOMEM;
result->checksum.data = tmp;
p = (u_char*)result->checksum.data + 24;
#endif
*p++ = (1 >> 0) & 0xFF; /* DlgOpt */ /* == 1 */
*p++ = (1 >> 8) & 0xFF; /* DlgOpt */ /* == 0 */
*p++ = (fwd_data->length >> 0) & 0xFF; /* Dlgth */
*p++ = (fwd_data->length >> 8) & 0xFF; /* Dlgth */
memcpy(p, (unsigned char *) fwd_data->data, fwd_data->length);
p += fwd_data->length;
if (p - (u_char *)result->checksum.data != result->checksum.length)
abort ();
abort();
}
return 0;
}
@@ -120,14 +151,16 @@ krb5_error_code
gssapi_krb5_verify_8003_checksum(
const gss_channel_bindings_t input_chan_bindings,
Checksum *cksum,
OM_uint32 *flags)
OM_uint32 *flags,
krb5_data *fwd_data)
{
unsigned char hash[16];
unsigned char *p;
OM_uint32 length;
int DlgOpt;
/* XXX should handle checksums > 24 bytes */
if(cksum->cksumtype != 0x8003 || cksum->checksum.length != 24)
if(cksum->cksumtype != 0x8003)
return GSS_S_BAD_BINDINGS;
p = cksum->checksum.data;
@@ -147,6 +180,24 @@ gssapi_krb5_verify_8003_checksum(
p += sizeof(hash);
decode_om_uint32(p, flags);
if (cksum->checksum.length > 24 && (*flags & GSS_C_DELEG_FLAG)) {
p += 4;
DlgOpt = (p[0] << 0) | (p[1] << 8 );
if (DlgOpt != 1)
return GSS_S_BAD_BINDINGS;
p += 2;
fwd_data->length = (p[0] << 0) | (p[1] << 8);
fwd_data->data = malloc(fwd_data->length);
if (fwd_data->data == NULL)
return ENOMEM;
p += 2;
memcpy(fwd_data->data, p, fwd_data->length);
}
return 0;
}