1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/stat.h> 34 #include <sys/param.h> 35 #include <fcntl.h> 36 #include <stdlib.h> 37 #include <ctype.h> 38 #include <stdio.h> 39 #include <dirent.h> 40 #include <libintl.h> 41 #include <errno.h> 42 #include <string.h> 43 #include <unistd.h> 44 #include <tzfile.h> 45 #include "cron.h" 46 47 #define CANTCD "can't change directory to the at directory" 48 #define NOREADDIR "can't read the at directory" 49 #define YEAR 1900 50 extern int audit_cron_is_anc_name(char *); 51 52 time_t 53 num(char **ptr) 54 { 55 time_t n = 0; 56 while (isdigit(**ptr)) { 57 n = n*10 + (**ptr - '0'); 58 *ptr += 1; } 59 return (n); 60 } 61 62 63 static int dom[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 64 65 int 66 days_btwn(int m1, int d1, int y1, int m2, int d2, int y2) 67 { 68 /* 69 * calculate the number of "full" days in between 70 * m1/d1/y1 and m2/d2/y2. 71 * NOTE: there should not be more than a year separation in the 72 * dates. also, m should be in 0 to 11, and d should be in 1 to 31. 73 */ 74 75 int days; 76 int m; 77 78 if ((m1 == m2) && (d1 == d2) && (y1 == y2)) 79 return (0); 80 if ((m1 == m2) && (d1 < d2)) { 81 /* 82 * In case of d2==29 ,d1==28 and m1==m2==Feb and year is not 83 * a leap year, this function should return the days till the 84 * the next Feb 29.See Bug 4257355. 85 */ 86 if (d2 > days_in_mon(m2, y2)) { 87 int p; 88 for (p = 1; ! isleap(y2+YEAR+p); p++) 89 ; 90 return (p*365 + d2-d1-1); 91 } 92 return (d2-d1-1); 93 } 94 /* the remaining dates are on different months */ 95 days = (days_in_mon(m1, y1)-d1) + (d2-1); 96 m = (m1 + 1) % 12; 97 while (m != m2) { 98 if (m == 0) 99 y1++; 100 days += days_in_mon(m, y1); 101 m = (m + 1) % 12; 102 } 103 return (days); 104 } 105 106 int 107 days_in_mon(int m, int y) 108 { 109 /* 110 * returns the number of days in month m of year y 111 * NOTE: m should be in the range 0 to 11 112 */ 113 return (dom[m] + (((m == 1) && isleap(y + YEAR)) ? 1 : 0)); 114 } 115 116 void * 117 xmalloc(size_t size) 118 { 119 char *p; 120 121 if ((p = malloc(size)) == NULL) { 122 perror("malloc"); 123 exit(55); 124 } 125 return (p); 126 } 127 128 void 129 cron_sendmsg(char action, char *login, char *fname, char etype) 130 { 131 static int msgfd = -2; 132 struct message *pmsg; 133 int i; 134 135 pmsg = &msgbuf; 136 if (msgfd == -2) { 137 if ((msgfd = open(FIFO, O_WRONLY|O_NDELAY)) < 0) { 138 if (errno == ENXIO || errno == ENOENT) 139 (void) fprintf(stderr, gettext("cron may not" 140 " be running - call your system" 141 " administrator\n")); 142 else 143 (void) fprintf(stderr, gettext( 144 "error in message queue open\n")); 145 return; 146 } 147 } 148 pmsg->etype = etype; 149 pmsg->action = action; 150 (void) strncpy(pmsg->fname, fname, FLEN); 151 (void) strncpy(pmsg->logname, login, LLEN); 152 if ((i = write(msgfd, pmsg, sizeof (struct message))) < 0) 153 (void) fprintf(stderr, gettext("error in message send\n")); 154 else if (i != sizeof (struct message)) 155 (void) fprintf(stderr, gettext( 156 "error in message send: Premature EOF\n")); 157 } 158 159 char 160 *errmsg(int errnum) 161 { 162 char *msg; 163 static char msgbuf[32]; 164 165 msg = strerror(errnum); 166 167 if (msg == NULL) { 168 (void) snprintf(msgbuf, sizeof (msgbuf), 169 gettext("Error %d"), errnum); 170 return (msgbuf); 171 } else 172 return (msg); 173 } 174 175 int 176 filewanted(struct dirent *direntry) 177 { 178 char *p; 179 char c; 180 181 p = direntry->d_name; 182 (void) num(&p); 183 if (p == direntry->d_name) 184 return (0); /* didn't start with a number */ 185 if (*p++ != '.') 186 return (0); /* followed by a period */ 187 c = *p++; 188 if (c < 'a' || c > 'z') 189 return (0); /* followed by a queue name */ 190 if (audit_cron_is_anc_name(direntry->d_name)) 191 return (0); 192 return (1); 193 } 194 195 void * 196 xcalloc(size_t nElements, size_t size) 197 { 198 void *p; 199 200 if ((p = calloc(nElements, size)) == NULL) { 201 perror("calloc"); 202 exit(55); 203 } 204 return (p); 205 } 206