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