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 2009 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 xcalloc(size_t nElements, size_t size) 128 { 129 void *p; 130 131 if ((p = calloc(nElements, size)) == NULL) { 132 perror("calloc"); 133 exit(55); 134 } 135 return (p); 136 } 137 138 char * 139 xstrdup(const char *str) 140 { 141 int len; 142 char *p; 143 144 len = strlen(str); 145 p = xmalloc(len + 1); 146 (void) memcpy(p, str, len); 147 p[len] = '\0'; 148 149 return (p); 150 } 151 152 void 153 cron_sendmsg(char action, char *login, char *fname, char etype) 154 { 155 static int msgfd = -2; 156 struct message *pmsg, msgbuf; 157 int i; 158 159 (void) memset(&msgbuf, 0, sizeof (msgbuf)); 160 pmsg = &msgbuf; 161 if (msgfd == -2) { 162 if ((msgfd = open(FIFO, O_WRONLY|O_NDELAY)) < 0) { 163 if (errno == ENXIO || errno == ENOENT) 164 (void) fprintf(stderr, gettext("cron may not" 165 " be running - call your system" 166 " administrator\n")); 167 else 168 (void) fprintf(stderr, gettext( 169 "error in message queue open\n")); 170 return; 171 } 172 } 173 pmsg->etype = etype; 174 pmsg->action = action; 175 (void) strlcpy(pmsg->fname, fname, FLEN); 176 (void) strlcpy(pmsg->logname, login, LLEN); 177 if ((i = write(msgfd, pmsg, sizeof (struct message))) < 0) 178 (void) fprintf(stderr, gettext("error in message send\n")); 179 else if (i != sizeof (struct message)) 180 (void) fprintf(stderr, gettext( 181 "error in message send: Premature EOF\n")); 182 } 183 184 char 185 *errmsg(int errnum) 186 { 187 char *msg; 188 static char msg_buf[32]; 189 190 msg = strerror(errnum); 191 192 if (msg == NULL) { 193 (void) snprintf(msg_buf, sizeof (msg_buf), 194 gettext("Error %d"), errnum); 195 return (msg_buf); 196 } else 197 return (msg); 198 } 199 200 int 201 filewanted(struct dirent *direntry) 202 { 203 char *p; 204 char c; 205 206 p = direntry->d_name; 207 (void) num(&p); 208 if (p == direntry->d_name) 209 return (0); /* didn't start with a number */ 210 if (*p++ != '.') 211 return (0); /* followed by a period */ 212 c = *p++; 213 if (c < 'a' || c > 'z') 214 return (0); /* followed by a queue name */ 215 if (audit_cron_is_anc_name(direntry->d_name)) 216 return (0); 217 return (1); 218 } 219 220 int 221 isvalid_shell(const char *shell) 222 { 223 char *t; 224 int ret = 0; 225 226 while ((t = getusershell()) != NULL) { 227 if (strcmp(t, shell) == 0) { 228 ret = 1; 229 break; 230 } 231 } 232 endusershell(); 233 return (ret); 234 } 235 236 int 237 isvalid_dir(const char *dir) 238 { 239 char *cwd = getcwd(NULL, 0); 240 241 if (dir[0] != '/' || chdir(dir) == -1) { 242 return (0); 243 } 244 if (cwd != NULL) { 245 (void) chdir(cwd); 246 } 247 return (1); 248 } 249