Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_utilities / lib / ccaudit.cpp

diff --git a/Security/libsecurity_utilities/lib/ccaudit.cpp b/Security/libsecurity_utilities/lib/ccaudit.cpp
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+++ b/Security/libsecurity_utilities/lib/ccaudit.cpp
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+/*
+ * Copyright (c) 2004,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This 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.
+ */
+
+
+#include <strings.h>   // bcopy()
+#include <errno.h>
+#include <bsm/libbsm.h>
+#include <security_utilities/utilities.h>
+#include <security_utilities/debugging.h>
+#include <security_utilities/logging.h>
+#include <security_utilities/errors.h>
+#include <security_utilities/ccaudit.h>
+
+namespace Security
+{
+namespace CommonCriteria
+{
+
+TerminalId::TerminalId()
+{
+       if (audit_set_terminal_id(this) != kAUNoErr)
+       {
+               Syslog::warning("setting terminal ID info failed; using defaults");
+               port = 0;
+               machine = 0;
+       }
+}
+
+AuditToken::AuditToken(const audit_token_t &token)
+    : mAuditToken(token)
+{
+    ::audit_token_to_au32(token, &mAuditId, &mEuid, &mEgid, &mRuid, &mRgid, &mPid, &mSessionId, &mTerminalId);
+}
+
+
+//
+// AuditInfo
+//
+void AuditInfo::get()
+{
+       this->clearPod();
+       UnixError::check(::getaudit_addr(this, sizeof(*this)));
+}
+
+void AuditInfo::get(au_asid_t session)
+{
+       this->get();
+       if (session != this->ai_asid) {
+               // need to use higher-privileged call to get info about a session that is not our own
+               this->ai_asid = session;
+               UnixError::check(::auditon(A_GETSINFO_ADDR, this, sizeof(*this)));
+       }
+}
+
+void AuditInfo::getPid(pid_t pid)
+{
+       auditpinfo_addr_t pinfo;
+       memset(&pinfo, 0, sizeof(pinfo));
+       pinfo.ap_pid = pid;
+       UnixError::check(::auditon(A_GETPINFO_ADDR, &pinfo, sizeof(pinfo)));
+       get(pinfo.ap_asid);
+}
+
+void AuditInfo::set()
+{
+       UnixError::check(::setaudit_addr(this, sizeof(*this)));
+}
+
+void AuditInfo::create(uint64_t flags, uid_t auid /* = AU_DEFAUDITID */)
+{
+       this->clearPod();
+       ai_auid = auid;
+       ai_asid = AU_ASSIGN_ASID;
+       ai_termid.at_type = AU_IPv4;
+       ai_flags = flags;
+       UnixError::check(::setaudit_addr(this, sizeof(*this)));
+}
+
+
+void AuditSession::registerSession(void)
+{
+    auditinfo_t auinfo;
+
+    auinfo.ai_auid = mAuditId;
+    auinfo.ai_asid = mSessionId;
+    bcopy(&mTerminalId, &(auinfo.ai_termid), sizeof(auinfo.ai_termid));
+    bcopy(&mEventMask.get(), &(auinfo.ai_mask), sizeof(auinfo.ai_mask));
+
+    if (setaudit(&auinfo) != 0)
+       {
+               if (errno == ENOTSUP)
+                       Syslog::notice("Attempted to initialize auditing, but this kernel does not support auditing");
+               else
+                       Syslog::warning("Could not initialize auditing (%m); continuing");
+       }
+}
+
+void AuditRecord::submit(const short event_code, const int returnCode, 
+                        const char *msg)
+{
+    // If we're not auditing, do nothing
+    if (!(au_get_state() == AUC_AUDITING))
+               return;
+
+    secdebug("ccaudit", "Submitting authorization audit record");
+
+    int ret = kAUNoErr;
+
+    // XXX/gh  3574731: Fix BSM SPI so the const_cast<>s aren't necessary
+    if (returnCode == 0)
+    {
+               token_t *tok = NULL;
+
+               if (msg)
+                       tok = au_to_text(const_cast<char *>(msg));
+               ret = audit_write_success(event_code, const_cast<token_t *>(tok), 
+                                                                 mAuditToken.auditId(), mAuditToken.euid(),
+                                                                 mAuditToken.egid(), mAuditToken.ruid(), 
+                                                                 mAuditToken.rgid(), mAuditToken.pid(), 
+                                                                 mAuditToken.sessionId(),
+                                                                 const_cast<au_tid_t *>(&(mAuditToken.terminalId())));
+    }
+    else
+    {
+               ret = audit_write_failure(event_code, const_cast<char *>(msg), 
+                                                                 returnCode, mAuditToken.auditId(), 
+                                                                 mAuditToken.euid(), mAuditToken.egid(), 
+                                                                 mAuditToken.ruid(), mAuditToken.rgid(), 
+                                                                 mAuditToken.pid(), mAuditToken.sessionId(),
+                                                                 const_cast<au_tid_t *>(&(mAuditToken.terminalId())));
+    }
+    if (ret != kAUNoErr)
+               MacOSError::throwMe(ret);
+}
+
+
+}      // end namespace CommonCriteria
+}      // end namespace Security