Viewing file:  kerb_w2k.c (22.2 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* ========================================================================
* Copyright 1988-2006 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*
* ========================================================================
*/
/*
* Program: GSSAPI Kerberos Shim 5 for Windows 2000/XP IMAP Toolkit
*
* Author: Mark Crispin
* Networks and Distributed Computing
* Computing & Communications
* University of Washington
* Administration Building, AG-44
* Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU
*
* Date: 6 March 2000
* Last Edited: 30 August 2006
*/
/* The purpose of this module is to be a shim, so that the auth_gss.c module
* (written for MIT Kerberos) will compile, link, and run with SSPI Kerberos
* on Windows 2000 systems.
* There is no attempt whatsoever to make this be a complete implementation
* of GSSAPI. A number of shortcuts were taken that a real GSSAPI
* implementation for SSPI can't do.
* Nor is there any attempt to make the types identical with MIT Kerberos;
* you can't link this library with object files compiled with the MIT
* Kerberos .h files.
*/
/* GSSAPI generic definitions */
#define SECURITY_WIN32
#include <security.h>
/* GSSAPI types for which we use SSPI equivalent types */
typedef ULONG OM_uint32;
typedef PCredHandle gss_cred_id_t;
typedef ULONG gss_cred_usage_t;
typedef PCtxtHandle gss_ctx_id_t;
typedef SEC_CHAR * gss_name_t;
typedef ULONG gss_qop_t;
/* Major status codes */
#define GSS_S_COMPLETE SEC_E_OK
#define GSS_S_BAD_MECH SEC_E_SECPKG_NOT_FOUND
#define GSS_S_CONTINUE_NEEDED SEC_I_CONTINUE_NEEDED
#define GSS_S_CREDENTIALS_EXPIRED SEC_E_CERT_EXPIRED
#define GSS_S_FAILURE SEC_E_INTERNAL_ERROR
#define GSS_S_NO_CRED SEC_E_NO_CREDENTIALS
#define GSS_S_NO_CONTEXT SEC_E_INVALID_HANDLE
/* Flag bits for context-level services */
#define GSS_C_DELEG_FLAG ISC_REQ_DELEGATE
#define GSS_C_MUTUAL_FLAG ISC_REQ_MUTUAL_AUTH
#define GSS_C_REPLAY_FLAG ISC_REQ_REPLAY_DETECT
#define GSS_C_SEQUENCE_FLAG ISC_REQ_SEQUENCE_DETECT
#define GSS_C_CONF_FLAG ISC_REQ_CONFIDENTIALITY
#define GSS_C_INTEG_FLAG ISC_REQ_INTEGRITY
/* Credential usage options */
#define GSS_C_BOTH SECPKG_CRED_BOTH
#define GSS_C_INITIATE SECPKG_CRED_OUTBOUND
#define GSS_C_ACCEPT SECPKG_CRED_INBOUND
/* Major status codes defined by shim */
#define GSS_S_BAD_BINDINGS 100
#define GSS_S_BAD_NAME 101
#define GSS_S_BAD_NAMETYPE 102
#define GSS_S_BAD_STATUS 103
/* GSSAPI types as used in GSSAPI */
/* Buffer */
typedef struct gss_buffer_desc_struct {
size_t length;
void *value;
} gss_buffer_desc,*gss_buffer_t;
/* Object identifier */
typedef struct gss_OID_desc_struct {
OM_uint32 length;
void *elements;
} gss_OID_desc,*gss_OID;
typedef struct gss_OID_set_desc_struct {
size_t count;
gss_OID elements;
} gss_OID_set_desc,*gss_OID_set;
/* Unused, but needed in prototypes */
typedef void * gss_channel_bindings_t;
/* Default constants */
#define GSS_C_EMPTY_BUFFER {0,NIL}
#define GSS_C_NO_BUFFER ((gss_buffer_t) NIL)
#define GSS_C_NO_OID ((gss_OID) NIL)
#define GSS_C_NO_CONTEXT ((gss_ctx_id_t) NIL)
#define GSS_C_NO_CREDENTIAL ((gss_cred_id_t) NIL)
#define GSS_C_NO_CHANNEL_BINDINGS ((gss_channel_bindings_t) NIL)
#define GSS_C_QOP_DEFAULT NIL
/* Status code types for gss_display_status */
#define GSS_C_GSS_CODE 1
#define GSS_C_MECH_CODE 2
/* GSSAPI constants */
const gss_OID gss_nt_service_name;
#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
const gss_OID gss_mech_krb5;
const gss_OID_set gss_mech_set_krb5;
/* GSSAPI prototypes */
OM_uint32 gss_accept_sec_context (OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_cred_id_t acceptor_cred_handle,
gss_buffer_t input_token_buffer,
gss_channel_bindings_t input_chan_bindings,
gss_name_t *src_name,gss_OID *mech_type,
gss_buffer_t output_token,
OM_uint32 *ret_flags,OM_uint32 *time_rec,
gss_cred_id_t *delegated_cred_handle);
OM_uint32 gss_acquire_cred (OM_uint32 *minor_status,gss_name_t desired_name,
OM_uint32 time_req,gss_OID_set desired_mechs,
gss_cred_usage_t cred_usage,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,OM_uint32 *time_rec);
OM_uint32 gss_delete_sec_context (OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t output_token);
OM_uint32 gss_display_name (OM_uint32 *minor_status,gss_name_t input_name,
gss_buffer_t output_name_buffer,
gss_OID *output_name_type);
OM_uint32 gss_display_status (OM_uint32 *minor_status,OM_uint32 status_value,
int status_type,gss_OID mech_type,
OM_uint32 *message_context,
gss_buffer_t status_string);
OM_uint32 gss_import_name (OM_uint32 *minor_status,
gss_buffer_t input_name_buffer,
gss_OID input_name_type,gss_name_t *output_name);
OM_uint32 gss_init_sec_context (OM_uint32 *minor_status,
gss_cred_id_t claimant_cred_handle,
gss_ctx_id_t *context_handle,
gss_name_t target_name,gss_OID mech_type,
OM_uint32 req_flags,OM_uint32 time_req,
gss_channel_bindings_t input_chan_bindings,
gss_buffer_t input_token,
gss_OID *actual_mech_type,
gss_buffer_t output_token,OM_uint32 *ret_flags,
OM_uint32 *time_rec);
OM_uint32 gss_release_buffer (OM_uint32 *minor_status,gss_buffer_t buffer);
OM_uint32 gss_release_cred (OM_uint32 *minor_status,gss_cred_id_t *cred_handle);
OM_uint32 gss_release_name (OM_uint32 *minor_status,gss_name_t *input_name);
OM_uint32 gss_wrap (OM_uint32 *minor_status,gss_ctx_id_t context_handle,
int conf_req_flag,gss_qop_t qop_req,
gss_buffer_t input_message_buffer,int *conf_state,
gss_buffer_t output_message_buffer);
OM_uint32 gss_unwrap (OM_uint32 *minor_status,gss_ctx_id_t context_handle,
gss_buffer_t input_message_buffer,
gss_buffer_t output_message_buffer,int *conf_state,
gss_qop_t *qop_state);
/* Kerberos definitions */
long kerberos_server_valid (void);
long kerberos_try_kinit (OM_uint32 error);
char *kerberos_login (char *user,char *authuser,int argc,char *argv[]);
#define STRING WINSTRING /* conflict with mail.h */
#include <NTSecAPI.h>
/* GSSAPI build-in object identifiers */
static gss_OID_desc oids[] = { /* stupid C language makes this necessary */
{10,"\052\206\110\206\367\022\001\002\001\004"},
{9,"\052\206\110\206\367\022\001\002\002"}
};
/* stupid C language ditto */
static gss_OID_set_desc oidsets[] = {
{1,(gss_OID) oids+1}
};
/* these are the real OIDs */
const gss_OID gss_nt_service_name = oids+0;
const gss_OID gss_mech_krb5 = oids+1;
const gss_OID_set gss_mech_set_krb5 = oidsets+0;
/* Other globals */
/* substitute for GSS_C_NO_CREDENTIAL */
static gss_cred_id_t gss_default_cred = NIL;
/* GSSAPI import name (convert to full service principal name)
* Accepts: pointer to return minor status
* buffer containining input name
* type of input name
* pointer to return output internal name
* Returns: major status, always
*/
OM_uint32 gss_import_name (OM_uint32 *minor_status,
gss_buffer_t input_name_buffer,
gss_OID input_name_type,gss_name_t *output_name)
{
OM_uint32 major_status = GSS_S_COMPLETE;
TimeStamp expiry;
static CredHandle gss_cred;
char *s,tmp[MAILTMPLEN];
*minor_status = 0; /* never any minor status */
if (!gss_default_cred) { /* default credentials set up yet? */
if (AcquireCredentialsHandle/* no, acquire them now */
(NIL,MICROSOFT_KERBEROS_NAME_A,SECPKG_CRED_OUTBOUND,NIL,NIL,NIL,NIL,
&gss_cred,&expiry) != SEC_E_OK) return GSS_S_FAILURE;
/* have default credentials now */
gss_default_cred = &gss_cred;
}
/* must be the gss_nt_service_name format */
if (input_name_type != gss_nt_service_name)
major_status = GSS_S_BAD_NAMETYPE;
/* name must be of sane length */
else if (input_name_buffer->length > (MAILTMPLEN/2))
major_status = GSS_S_BAD_NAME;
else { /* copy name */
memcpy (tmp,input_name_buffer->value,input_name_buffer->length);
tmp[input_name_buffer->length] = '\0';
if (s = strchr (tmp,'@')) { /* find service/host/delimiter */
*s = '/'; /* convert to full service principal name */
*output_name = cpystr (tmp);
}
else major_status = GSS_S_BAD_NAME;
}
return major_status;
}
/* GSSAPI Initialize security context
* Accepts: pointer to return minor status
* claimant credential handle
* context (NIL means "none assigned yet")
* desired principal
* desired mechanisms
* required context attributes
* desired lifetime
* input channel bindings
* input token buffer
* pointer to return mechanism type
* buffer to return output token
* pointer to return flags
* pointer to return context lifetime
* Returns: major status, always
*/
OM_uint32 gss_init_sec_context (OM_uint32 *minor_status,
gss_cred_id_t claimant_cred_handle,
gss_ctx_id_t *context_handle,
gss_name_t target_name,gss_OID mech_type,
OM_uint32 req_flags,OM_uint32 time_req,
gss_channel_bindings_t input_chan_bindings,
gss_buffer_t input_token,
gss_OID *actual_mech_type,
gss_buffer_t output_token,OM_uint32 *ret_flags,
OM_uint32 *time_rec)
{
OM_uint32 i;
OM_uint32 major_status;
TimeStamp expiry;
SecBuffer ibuf[1],obuf[1];
SecBufferDesc ibufs,obufs;
*minor_status = 0; /* never any minor status */
/* error if non-default time requested */
if (time_req) return GSS_S_FAILURE;
if (mech_type && memcmp (mech_type,gss_mech_krb5,sizeof (gss_OID)))
return GSS_S_BAD_MECH;
/* ditto if any channel bindings */
if (input_chan_bindings != GSS_C_NO_CHANNEL_BINDINGS)
return GSS_S_BAD_BINDINGS;
/* apply default credential if necessary */
if (claimant_cred_handle == GSS_C_NO_CREDENTIAL)
claimant_cred_handle = gss_default_cred;
/* create output buffer storage as needed */
req_flags |= ISC_REQ_ALLOCATE_MEMORY;
/* make output buffer */
obuf[0].BufferType = SECBUFFER_TOKEN;
obuf[0].cbBuffer = 0; obuf[0].pvBuffer = NIL;
/* output buffer descriptor */
obufs.ulVersion = SECBUFFER_VERSION;
obufs.cBuffers = 1;
obufs.pBuffers = obuf;
/* first time caller? */
if (*context_handle == GSS_C_NO_CONTEXT) {
/* yes, set up output context handle */
PCtxtHandle ctx = (PCtxtHandle) fs_get (sizeof (CtxtHandle));
major_status = InitializeSecurityContext (claimant_cred_handle,NIL,
target_name,req_flags,0,
SECURITY_NETWORK_DREP,NIL,0,ctx,
&obufs,
ret_flags ? ret_flags : &i,
&expiry);
*context_handle = ctx; /* return updated context */
}
else { /* no, make SSPI buffer from GSSAPI buffer */
ibuf[0].BufferType = obuf[0].BufferType = SECBUFFER_TOKEN;
ibuf[0].cbBuffer = input_token->length;
ibuf[0].pvBuffer = input_token->value;
/* input buffer descriptor */
ibufs.ulVersion = SECBUFFER_VERSION;
ibufs.cBuffers = 1;
ibufs.pBuffers = ibuf;
major_status = InitializeSecurityContext (claimant_cred_handle,
*context_handle,target_name,
req_flags,0,
SECURITY_NETWORK_DREP,&ibufs,0,
*context_handle,&obufs,
ret_flags ? ret_flags : &i,
&expiry);
}
/* return output */
output_token->value = obuf[0].pvBuffer;
output_token->length = obuf[0].cbBuffer;
/* in case client wanted lifetime returned */
if (time_rec) *time_rec = expiry.LowPart;
return major_status;
}
/* GSSAPI display status text
* Accepts: pointer to return minor status
* status to display
* status type
* message context for continuation
* buffer to write status string
* Returns: major status, always
*/
OM_uint32 gss_display_status (OM_uint32 *minor_status,OM_uint32 status_value,
int status_type,gss_OID mech_type,
OM_uint32 *message_context,
gss_buffer_t status_string)
{
char *s,tmp[MAILTMPLEN];
*minor_status = 0; /* never any minor status */
if (*message_context) return GSS_S_FAILURE;
switch (status_type) { /* what type of status code? */
case GSS_C_GSS_CODE: /* major_status */
switch (status_value) { /* analyze status value */
case GSS_S_FAILURE:
s = "Unspecified failure"; break;
case GSS_S_CREDENTIALS_EXPIRED:
s = "Credentials expired"; break;
case GSS_S_BAD_BINDINGS:
s = "Bad bindings"; break;
case GSS_S_BAD_MECH:
s = "Bad mechanism type"; break;
case GSS_S_BAD_NAME:
s = "Bad name"; break;
case GSS_S_BAD_NAMETYPE:
s = "Bad name type"; break;
case GSS_S_BAD_STATUS:
s = "Bad status"; break;
case GSS_S_NO_CONTEXT:
s = "Invalid context handle"; break;
case GSS_S_NO_CRED:
s = "Unable to authenticate to Kerberos service";
mail_parameters (NIL,DISABLE_AUTHENTICATOR,"GSSAPI");
break;
case SEC_E_NO_AUTHENTICATING_AUTHORITY:
s = "No authenticating authority"; break;
case SEC_E_TARGET_UNKNOWN:
s = "Destination server unknown to Kerberos service"; break;
default:
sprintf (s = tmp,"SSPI code %lx",status_value);
}
break;
case GSS_C_MECH_CODE: /* minor status - drop into default */
default:
return GSS_S_BAD_STATUS; /* bad status type */
}
/* return status string */
status_string->length = strlen (status_string->value = cpystr (s));
return GSS_S_COMPLETE;
}
/* GSSAPI delete security context
* Accepts: pointer to return minor status
* context to delete
* output context token
* Returns: major status, always
*/
OM_uint32 gss_delete_sec_context (OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t output_token)
{
OM_uint32 major_status;
*minor_status = 0; /* never any minor status */
/* output token not supported */
major_status = output_token ? GSS_S_FAILURE :
DeleteSecurityContext (*context_handle);
fs_give ((void **) context_handle);
return major_status;
}
/* GSSAPI release buffer
* Accepts: pointer to return minor status
* buffer to release
* Returns: GSS_S_COMPLETE, always
*/
OM_uint32 gss_release_buffer (OM_uint32 *minor_status,gss_buffer_t buffer)
{
*minor_status = 0; /* never any minor status */
fs_give (&buffer->value);
return GSS_S_COMPLETE;
}
/* GSSAPI release name
* Accepts: pointer to return minor status
* pointer to name to release
* Returns: GSS_S_COMPLETE, always
*/
OM_uint32 gss_release_name (OM_uint32 *minor_status,gss_name_t *input_name)
{
*minor_status = 0; /* never any minor status */
fs_give (input_name);
return GSS_S_COMPLETE;
}
/* GSSAPI wrap data
* Accepts: pointer to return minor status
* context handle
* requested confidentiality
* requested quality of protection
* input message buffer
* pointer to return confidentiality state
* output message buffer
* Returns: major status, always
*/
OM_uint32 gss_wrap (OM_uint32 *minor_status,gss_ctx_id_t context_handle,
int conf_req_flag,gss_qop_t qop_req,
gss_buffer_t input_message_buffer,int *conf_state,
gss_buffer_t output_message_buffer)
{
OM_uint32 major_status;
SecBuffer buf[3];
SecBufferDesc bufs;
SecPkgContext_Sizes sizes;
*minor_status = NIL; /* never any minor status */
*conf_state = conf_req_flag; /* same as requested */
if ((major_status = /* get trailer and padding sizes */
QueryContextAttributes (context_handle,SECPKG_ATTR_SIZES,&sizes)) ==
SEC_E_OK) {
/* create big enough output buffer */
output_message_buffer->value =
fs_get (sizes.cbSecurityTrailer + input_message_buffer->length +
sizes.cbBlockSize);
/* MSDN claims that for EncryptMessage() in Kerberos, you need an
* uninitialized SECBUFFER_STREAM_HEADER; a SECBUFFER_DATA that "contains
* the message to be encrypted. The message is encrypted in place,
* overwriting the original contents of its buffer"; an uninitialized
* SECBUFFER_STREAM_TRAILER, and an uninitialized SECBUFFER_EMPTY. I've
* never been able to get it to work that way.
*/
bufs.cBuffers = 3; /* set up buffer descriptor */
bufs.pBuffers = buf;
bufs.ulVersion = SECBUFFER_VERSION;
buf[0].BufferType = SECBUFFER_TOKEN;
buf[0].pvBuffer = output_message_buffer->value;
buf[0].cbBuffer = sizes.cbSecurityTrailer;
/* I/O buffer */
buf[1].BufferType = SECBUFFER_DATA;
buf[1].pvBuffer = ((char *) buf[0].pvBuffer) + buf[0].cbBuffer;
buf[1].cbBuffer = input_message_buffer->length;
memcpy (buf[1].pvBuffer,input_message_buffer->value,buf[1].cbBuffer);
buf[2].BufferType = SECBUFFER_PADDING;
buf[2].pvBuffer = ((char *) buf[1].pvBuffer) + buf[1].cbBuffer;
buf[2].cbBuffer = sizes.cbBlockSize;
if ((major_status = EncryptMessage (context_handle,qop_req,&bufs,0)) ==
GSS_S_COMPLETE) {
/* slide data as necessary (how annoying!) */
unsigned long i = sizes.cbSecurityTrailer - buf[0].cbBuffer;
if (i) buf[1].pvBuffer =
memmove (((char *) buf[0].pvBuffer) + buf[0].cbBuffer,
buf[1].pvBuffer,buf[1].cbBuffer);
if (i += (input_message_buffer->length - buf[1].cbBuffer))
buf[1].pvBuffer = memmove (((char *)buf[1].pvBuffer) + buf[1].cbBuffer,
buf[2].pvBuffer,buf[2].cbBuffer);
output_message_buffer->length = buf[0].cbBuffer + buf[1].cbBuffer +
buf[2].cbBuffer;
}
else fs_give (&output_message_buffer->value);
}
return major_status; /* return status */
}
/* GSSAPI unwrap data
* Accepts: pointer to return minor status
* context handle
* input message buffer
* output message buffer
* pointer to return confidentiality state
* pointer to return quality of protection
* Returns: major status, always
*/
OM_uint32 gss_unwrap (OM_uint32 *minor_status,gss_ctx_id_t context_handle,
gss_buffer_t input_message_buffer,
gss_buffer_t output_message_buffer,int *conf_state,
gss_qop_t *qop_state)
{
OM_uint32 major_status;
SecBuffer buf[2];
SecBufferDesc bufs;
*minor_status = NIL; /* never any minor status */
*conf_state = NIL; /* or confidentiality state */
/* MSDN implies that all that is needed for DecryptMessage() in Kerberos
* is a single SECBUFFER_DATA which "contains the encrypted message. The
* encrypted message is decrypted in place, overwriting the original
* contents of its buffer." I've never been able to get it to work without
* using a SECBUFFER_STREAM for input and an uninitialized SECBUFFER_DATA
* for output.
* It *does* overwrite the input buffer, but not at the same point; e.g.
* with an input pointer of 0xa140a8 and size of 53, the output ends up
* at 0xa140d5 and size of 4.
*/
bufs.cBuffers = 2; /* set up buffer descriptor */
bufs.pBuffers = buf;
bufs.ulVersion = SECBUFFER_VERSION;
/* input buffer */
buf[0].BufferType = SECBUFFER_STREAM;
buf[0].pvBuffer = input_message_buffer->value;
buf[0].cbBuffer = input_message_buffer->length;
/* output buffer */
buf[1].BufferType = SECBUFFER_DATA;
buf[1].pvBuffer = NIL;
buf[1].cbBuffer = 0;
/* decrypt and copy to output buffer */
if ((major_status = DecryptMessage (context_handle,&bufs,0,qop_state)) ==
SEC_E_OK)
memcpy (output_message_buffer->value = fs_get (buf[1].cbBuffer),
buf[1].pvBuffer,output_message_buffer->length = buf[1].cbBuffer);
return major_status; /* return status */
}
/* From here on are server-only functions, currently unused */
/* GSSAPI acquire credentials
* Accepts: pointer to return minor status
* desired principal
* desired lifetime
* desired mechanisms
* credentials usage
* pointer to return credentials handle
* pointer to return mechanisms
* pointer to return lifetime
* Returns: GSS_S_FAILURE, always
*/
OM_uint32 gss_acquire_cred (OM_uint32 *minor_status,gss_name_t desired_name,
OM_uint32 time_req,gss_OID_set desired_mechs,
gss_cred_usage_t cred_usage,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,OM_uint32 *time_rec)
{
*minor_status = 0; /* never any minor status */
return GSS_S_FAILURE; /* server only */
}
/* GSSAPI release credentials
* Accepts: pointer to return minor status
* credentials handle to free
* Returns: GSS_S_COMPLETE, always
*/
OM_uint32 gss_release_cred (OM_uint32 *minor_status,gss_cred_id_t *cred_handle)
{
*minor_status = 0; /* never any minor status */
return GSS_S_FAILURE; /* server only */
}
/* GSSAPI Accept security context
* Accepts: pointer to return minor status
* context
* acceptor credentials
* input token buffer
* input channel bindings
* pointer to return source name
* pointer to return mechanism type
* buffer to return output token
* pointer to return flags
* pointer to return context lifetime
* pointer to return delegated credentials
* Returns: GSS_S_FAILURE, always
*/
OM_uint32 gss_accept_sec_context (OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_cred_id_t acceptor_cred_handle,
gss_buffer_t input_token_buffer,
gss_channel_bindings_t input_chan_bindings,
gss_name_t *src_name,gss_OID *mech_type,
gss_buffer_t output_token,
OM_uint32 *ret_flags,OM_uint32 *time_rec,
gss_cred_id_t *delegated_cred_handle)
{
*minor_status = 0; /* never any minor status */
return GSS_S_FAILURE; /* server only */
}
/* GSSAPI return printable name
* Accepts: pointer to return minor status
* internal name
* buffer to return output name
* output name type
* Returns: GSS_S_FAILURE, always
*/
OM_uint32 gss_display_name (OM_uint32 *minor_status,gss_name_t input_name,
gss_buffer_t output_name_buffer,
gss_OID *output_name_type)
{
*minor_status = 0; /* never any minor status */
return GSS_S_FAILURE; /* server only */
}
/* Kerberos server valid check
* Returns: T if have keytab, NIL otherwise
*/
long kerberos_server_valid ()
{
return NIL;
}
/* Kerberos check for missing or expired credentials
* Returns: T if should suggest running kinit, NIL otherwise
*/
long kerberos_try_kinit (OM_uint32 error)
{
return NIL;
}
/* Kerberos server log in
* Accepts: authorization ID as user name
* authentication ID as Kerberos principal
* argument count
* argument vector
* Returns: logged in user name if logged in, NIL otherwise
*/
char *kerberos_login (char *user,char *authuser,int argc,char *argv[])
{
return NIL;
}
|