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 #include <sys/types.h> 31 #include <sys/stat.h> 32 #include <sys/param.h> 33 #include <fcntl.h> 34 #include <stdlib.h> 35 #include <ctype.h> 36 #include <stdio.h> 37 #include <dirent.h> 38 #include <libintl.h> 39 #include <errno.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <tzfile.h> 43 #include "cron.h" 44 45 #define CANTCD "can't change directory to the at directory" 46 #define NOREADDIR "can't read the at directory" 47 #define YEAR 1900 48 extern int audit_cron_is_anc_name(char *); 49 50 time_t 51 num(char **ptr) 52 { 53 time_t n = 0; 54 while (isdigit(**ptr)) { 55 n = n*10 + (**ptr - '0'); 56 *ptr += 1; } 57 return (n); 58 } 59 60 61 static int dom[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 62 63 int 64 days_btwn(int m1, int d1, int y1, int m2, int d2, int y2) 65 { 66 /* 67 * calculate the number of "full" days in between 68 * m1/d1/y1 and m2/d2/y2. 69 * NOTE: there should not be more than a year separation in the 70 * dates. also, m should be in 0 to 11, and d should be in 1 to 31. 71 */ 72 73 int days; 74 int m; 75 76 if ((m1 == m2) && (d1 == d2) && (y1 == y2)) 77 return (0); 78 if ((m1 == m2) && (d1 < d2)) { 79 /* 80 * In case of d2==29 ,d1==28 and m1==m2==Feb and year is not 81 * a leap year, this function should return the days till the 82 * the next Feb 29.See Bug 4257355. 83 */ 84 if (d2 > days_in_mon(m2, y2)) { 85 int p; 86 for (p = 1; ! isleap(y2+YEAR+p); p++) 87 ; 88 return (p*365 + d2-d1-1); 89 } 90 return (d2-d1-1); 91 } 92 /* the remaining dates are on different months */ 93 days = (days_in_mon(m1, y1)-d1) + (d2-1); 94 m = (m1 + 1) % 12; 95 while (m != m2) { 96 if (m == 0) 97 y1++; 98 days += days_in_mon(m, y1); 99 m = (m + 1) % 12; 100 } 101 return (days); 102 } 103 104 int 105 days_in_mon(int m, int y) 106 { 107 /* 108 * returns the number of days in month m of year y 109 * NOTE: m should be in the range 0 to 11 110 */ 111 return (dom[m] + (((m == 1) && isleap(y + YEAR)) ? 1 : 0)); 112 } 113 114 void * 115 xmalloc(size_t size) 116 { 117 char *p; 118 119 if ((p = malloc(size)) == NULL) { 120 perror("malloc"); 121 exit(55); 122 } 123 return (p); 124 } 125 126 void 127 cron_sendmsg(char action, char *login, char *fname, char etype) 128 { 129 static int msgfd = -2; 130 struct message *pmsg; 131 int i; 132 133 pmsg = &msgbuf; 134 if (msgfd == -2) { 135 if ((msgfd = open(FIFO, O_WRONLY|O_NDELAY)) < 0) { 136 if (errno == ENXIO || errno == ENOENT) 137 (void) fprintf(stderr, gettext("cron may not" 138 " be running - call your system" 139 " administrator\n")); 140 else 141 (void) fprintf(stderr, gettext( 142 "error in message queue open\n")); 143 return; 144 } 145 } 146 pmsg->etype = etype; 147 pmsg->action = action; 148 (void) strncpy(pmsg->fname, fname, FLEN); 149 (void) strncpy(pmsg->logname, login, LLEN); 150 if ((i = write(msgfd, pmsg, sizeof (struct message))) < 0) 151 (void) fprintf(stderr, gettext("error in message send\n")); 152 else if (i != sizeof (struct message)) 153 (void) fprintf(stderr, gettext( 154 "error in message send: Premature EOF\n")); 155 } 156 157 char 158 *errmsg(int errnum) 159 { 160 char *msg; 161 static char msgbuf[32]; 162 163 msg = strerror(errnum); 164 165 if (msg == NULL) { 166 (void) snprintf(msgbuf, sizeof (msgbuf), 167 gettext("Error %d"), errnum); 168 return (msgbuf); 169 } else 170 return (msg); 171 } 172 173 int 174 filewanted(struct dirent *direntry) 175 { 176 char *p; 177 char c; 178 179 p = direntry->d_name; 180 (void) num(&p); 181 if (p == direntry->d_name) 182 return (0); /* didn't start with a number */ 183 if (*p++ != '.') 184 return (0); /* followed by a period */ 185 c = *p++; 186 if (c < 'a' || c > 'z') 187 return (0); /* followed by a queue name */ 188 if (audit_cron_is_anc_name(direntry->d_name)) 189 return (0); 190 return (1); 191 } 192 193 void * 194 xcalloc(size_t nElements, size_t size) 195 { 196 void *p; 197 198 if ((p = calloc(nElements, size)) == NULL) { 199 perror("calloc"); 200 exit(55); 201 } 202 return (p); 203 } 204 205 int 206 isvalid_shell(const char *shell) 207 { 208 char *t; 209 int ret = 0; 210 211 while ((t = getusershell()) != NULL) { 212 if (strcmp(t, shell) == 0) { 213 ret = 1; 214 break; 215 } 216 } 217 endusershell(); 218 return (ret); 219 } 220 221 int 222 isvalid_dir(const char *dir) 223 { 224 char *cwd = getcwd(NULL, 0); 225 226 if (dir[0] != '/' || chdir(dir) == -1) { 227 return (0); 228 } 229 if (cwd != NULL) { 230 (void) chdir(cwd); 231 } 232 return (1); 233 } 234