/*
* Copyright (c) 2006-2017 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <sys/errno.h>
#include <sys/types.h>
#include <kern/kalloc.h>
#include <sys/buf.h>
#include <sys/time.h>
#include <sys/kauth.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/syslog.h>
#include <sys/vnode_internal.h>
#include <sys/fslog.h>
#include <sys/mount_internal.h>
#if 0 /* see rdar://81514225 */
#include <sys/kasl.h>
#endif
#include <kern/zalloc.h>
#include <uuid/uuid.h>
#include <stdarg.h>
/* Log information about external modification of a process,
* using MessageTracer formatting. Assumes that both the caller
* and target are appropriately locked.
* Currently prints following information -
* 1. Caller process name (truncated to 16 characters)
* 2. Caller process Mach-O UUID
* 3. Target process name (truncated to 16 characters)
* 4. Target process Mach-O UUID
*/
void
fslog_extmod_msgtracer(__unused proc_t caller, __unused proc_t target)
{
#if 0 /* see rdar://81514225 */
if ((caller != PROC_NULL) && (target != PROC_NULL)) {
/*
* Print into buffer large enough for "ThisIsAnApplicat(BC223DD7-B314-42E0-B6B0-C5D2E6638337)",
* including space for escaping, and NUL byte included in sizeof(uuid_string_t).
*/
uuid_string_t uuidstr;
char c_name[2 * MAXCOMLEN + 2 /* () */ + sizeof(uuid_string_t)];
char t_name[2 * MAXCOMLEN + 2 /* () */ + sizeof(uuid_string_t)];
strlcpy(c_name, caller->p_comm, sizeof(c_name));
uuid_unparse_upper(proc_executableuuid_addr(caller), uuidstr);
strlcat(c_name, "(", sizeof(c_name));
strlcat(c_name, uuidstr, sizeof(c_name));
strlcat(c_name, ")", sizeof(c_name));
if (0 != escape_str(c_name, strlen(c_name) + 1, sizeof(c_name))) {
return;
}
strlcpy(t_name, target->p_comm, sizeof(t_name));
uuid_unparse_upper(proc_executableuuid_addr(target), uuidstr);
strlcat(t_name, "(", sizeof(t_name));
strlcat(t_name, uuidstr, sizeof(t_name));
strlcat(t_name, ")", sizeof(t_name));
if (0 != escape_str(t_name, strlen(t_name) + 1, sizeof(t_name))) {
return;
}
#if DEBUG
printf("EXTMOD: %s(%d) -> %s(%d)\n",
c_name,
proc_pid(caller),
t_name,
proc_pid(target));
#endif
kern_asl_msg(LOG_DEBUG, "messagetracer",
5,
"com.apple.message.domain", "com.apple.kernel.external_modification", /* 0 */
"com.apple.message.signature", c_name, /* 1 */
"com.apple.message.signature2", t_name, /* 2 */
"com.apple.message.result", "noop", /* 3 */
"com.apple.message.summarize", "YES", /* 4 */
NULL);
}
#endif
}