1 /*- 2 * Copyright (c) 2005-2009 Apple Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 15 * its contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 /* 30 * Program to trigger the audit daemon with a message that is either: 31 * - Open a new audit log file 32 * - Read the audit control file and take action on it 33 * - Close the audit log file and exit 34 * 35 */ 36 37 #include <sys/types.h> 38 #include <config/config.h> 39 #ifdef HAVE_FULL_QUEUE_H 40 #include <sys/queue.h> 41 #else /* !HAVE_FULL_QUEUE_H */ 42 #include <compat/queue.h> 43 #endif /* !HAVE_FULL_QUEUE_H */ 44 #include <sys/uio.h> 45 46 #include <bsm/libbsm.h> 47 48 #include <errno.h> 49 #include <fcntl.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 54 55 static int send_trigger(int); 56 57 #ifdef USE_MACH_IPC 58 #include <mach/mach.h> 59 #include <servers/netname.h> 60 #include <mach/message.h> 61 #include <mach/port.h> 62 #include <mach/mach_error.h> 63 #include <mach/host_special_ports.h> 64 #include <servers/bootstrap.h> 65 66 #include "auditd_control.h" 67 68 /* 69 * XXX The following are temporary until these can be added to the kernel 70 * audit.h header. 71 */ 72 #ifndef AUDIT_TRIGGER_INITIALIZE 73 #define AUDIT_TRIGGER_INITIALIZE 7 74 #endif 75 #ifndef AUDIT_TRIGGER_EXPIRE_TRAILS 76 #define AUDIT_TRIGGER_EXPIRE_TRAILS 8 77 #endif 78 79 static int 80 send_trigger(int trigger) 81 { 82 mach_port_t serverPort; 83 kern_return_t error; 84 85 error = host_get_audit_control_port(mach_host_self(), &serverPort); 86 if (error != KERN_SUCCESS) { 87 if (geteuid() != 0) { 88 errno = EPERM; 89 perror("audit requires root privileges"); 90 } else 91 mach_error("Cannot get auditd_control Mach port:", 92 error); 93 return (-1); 94 } 95 96 error = auditd_control(serverPort, trigger); 97 if (error != KERN_SUCCESS) { 98 mach_error("Error sending trigger: ", error); 99 return (-1); 100 } 101 102 return (0); 103 } 104 105 #else /* ! USE_MACH_IPC */ 106 107 static int 108 send_trigger(int trigger) 109 { 110 int error; 111 112 error = audit_send_trigger(&trigger); 113 if (error != 0) { 114 if (error == EPERM) 115 perror("audit requires root privileges"); 116 else 117 perror("Error sending trigger"); 118 return (-1); 119 } 120 121 return (0); 122 } 123 #endif /* ! USE_MACH_IPC */ 124 125 static void 126 usage(void) 127 { 128 129 (void)fprintf(stderr, "Usage: audit -e | -i | -n | -s | -t \n"); 130 exit(-1); 131 } 132 133 /* 134 * Main routine to process command line options. 135 */ 136 int 137 main(int argc, char **argv) 138 { 139 int ch; 140 unsigned int trigger = 0; 141 142 if (argc != 2) 143 usage(); 144 145 while ((ch = getopt(argc, argv, "einst")) != -1) { 146 switch(ch) { 147 148 case 'e': 149 trigger = AUDIT_TRIGGER_EXPIRE_TRAILS; 150 break; 151 152 case 'i': 153 trigger = AUDIT_TRIGGER_INITIALIZE; 154 break; 155 156 case 'n': 157 trigger = AUDIT_TRIGGER_ROTATE_USER; 158 break; 159 160 case 's': 161 trigger = AUDIT_TRIGGER_READ_FILE; 162 break; 163 164 case 't': 165 trigger = AUDIT_TRIGGER_CLOSE_AND_DIE; 166 break; 167 168 case '?': 169 default: 170 usage(); 171 break; 172 } 173 } 174 if (send_trigger(trigger) < 0) 175 exit(-1); 176 177 printf("Trigger sent.\n"); 178 exit (0); 179 } 180