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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* plugins/audit/au_test.c - Test Audit plugin implementation */
/*
* Copyright (C) 2013 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This test is to verify the JSON-based KDC audit functionality.
* It utilized MIT Kerberos <kdc_j_encode.h> routines for JSON processing.
*/
#include <k5-int.h>
#include <krb5/audit_plugin.h>
#include <kdc_j_encode.h>
#include "k5-thread.h"
struct krb5_audit_moddata_st {
int au_fd;
};
krb5_error_code
audit_test_initvt(krb5_context context, int maj_ver, int min_ver,
krb5_plugin_vtable vtable);
static FILE *au_fd;
static k5_mutex_t lock = K5_MUTEX_PARTIAL_INITIALIZER;
/* Open connection to the audit system. Returns 0 on success. */
static krb5_error_code
open_au(krb5_audit_moddata *auctx)
{
au_fd = fopen("au.log", "a+");
if ( au_fd < 0) {
return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */
}
k5_mutex_init(&lock);
return 0;
}
/* Close connection to the audit system. Returns 0. */
static krb5_error_code
close_au(krb5_audit_moddata auctx)
{
fclose(au_fd);
k5_mutex_destroy(&lock);
return 0;
}
/* Log KDC-start event. Returns 0 on success. */
static krb5_error_code
j_kdc_start(krb5_audit_moddata auctx, krb5_boolean ev_success)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_kdc_start(ev_success, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
/* Log KDC-stop event. Returns 0 on success. */
static krb5_error_code
j_kdc_stop(krb5_audit_moddata auctx, krb5_boolean ev_success)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_kdc_stop(ev_success, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
/* Log AS_REQ event. Returns 0 on success. */
static krb5_error_code
j_as_req(krb5_audit_moddata auctx, krb5_boolean ev_success,
krb5_audit_state *state)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_as_req(ev_success, state, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
/* Log TGS_REQ event. Returns 0 on success. */
static krb5_error_code
j_tgs_req(krb5_audit_moddata auctx, krb5_boolean ev_success,
krb5_audit_state *state)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_tgs_req(ev_success, state, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
/* Log S4U2SELF event. Returns 0 on success. */
static krb5_error_code
j_tgs_s4u2self(krb5_audit_moddata auctx, krb5_boolean ev_success,
krb5_audit_state *state)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_tgs_s4u2self(ev_success, state, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
/* Log S4U2PROXY event. Returns 0 on success. */
static krb5_error_code
j_tgs_s4u2proxy(krb5_audit_moddata auctx, krb5_boolean ev_success,
krb5_audit_state *state)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_tgs_s4u2proxy(ev_success, state, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
/* Log user-to-user event. Returns 0 on success. */
static krb5_error_code
j_tgs_u2u(krb5_audit_moddata auctx, krb5_boolean ev_success,
krb5_audit_state *state)
{
krb5_error_code ret = 0;
char *jout = NULL;
ret = kau_j_tgs_u2u(ev_success, state, &jout);
if (ret)
return ret;
k5_mutex_lock(&lock);
fprintf(au_fd,"%s\n", jout);
fflush(au_fd);
k5_mutex_unlock(&lock);
free(jout);
return ret;
}
krb5_error_code
audit_test_initvt(krb5_context context, int maj_ver, int min_ver,
krb5_plugin_vtable vtable)
{
krb5_audit_vtable vt;
if (maj_ver != 1)
return KRB5_PLUGIN_VER_NOTSUPP;
vt = (krb5_audit_vtable)vtable;
vt->name = "test";
vt->open = open_au;
vt->close = close_au;
vt->kdc_start = j_kdc_start;
vt->kdc_stop = j_kdc_stop;
vt->as_req = j_as_req;
vt->tgs_req = j_tgs_req;
vt->tgs_s4u2self = j_tgs_s4u2self;
vt->tgs_s4u2proxy = j_tgs_s4u2proxy;
vt->tgs_u2u = j_tgs_u2u;
return 0;
}
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