1 /* $OpenBSD: user.c,v 1.8 2009/10/27 23:59:51 deraadt Exp $ */ 2 3 /* Copyright 1988,1990,1993,1994 by Paul Vixie 4 * All rights reserved 5 */ 6 7 /* 8 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 9 * Copyright (c) 1997,2000 by Internet Software Consortium, Inc. 10 * 11 * Permission to use, copy, modify, and distribute this software for any 12 * purpose with or without fee is hereby granted, provided that the above 13 * copyright notice and this permission notice appear in all copies. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 16 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 17 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 18 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 19 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 20 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 21 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 22 */ 23 24 /* vix 26jan87 [log is in RCS file] 25 */ 26 27 #include "cron.h" 28 29 void 30 free_user(user *u) { 31 entry *e, *ne; 32 33 free(u->name); 34 for (e = u->crontab; e != NULL; e = ne) { 35 ne = e->next; 36 free_entry(e); 37 } 38 free(u); 39 } 40 41 user * 42 load_user(int crontab_fd, struct passwd *pw, const char *name) { 43 char envstr[MAX_ENVSTR]; 44 FILE *file; 45 user *u; 46 entry *e; 47 int status, save_errno; 48 char **envp, **tenvp; 49 50 if (!(file = fdopen(crontab_fd, "r"))) { 51 perror("fdopen on crontab_fd in load_user"); 52 return (NULL); 53 } 54 55 Debug(DPARS, ("load_user()\n")) 56 57 /* file is open. build user entry, then read the crontab file. 58 */ 59 if ((u = (user *) malloc(sizeof(user))) == NULL) 60 return (NULL); 61 if ((u->name = strdup(name)) == NULL) { 62 save_errno = errno; 63 free(u); 64 errno = save_errno; 65 return (NULL); 66 } 67 u->crontab = NULL; 68 69 /* init environment. this will be copied/augmented for each entry. 70 */ 71 if ((envp = env_init()) == NULL) { 72 save_errno = errno; 73 free(u->name); 74 free(u); 75 errno = save_errno; 76 return (NULL); 77 } 78 79 /* load the crontab 80 */ 81 while ((status = load_env(envstr, file)) >= OK) { 82 switch (status) { 83 case ERR: 84 free_user(u); 85 u = NULL; 86 goto done; 87 case FALSE: 88 e = load_entry(file, NULL, pw, envp); 89 if (e) { 90 e->next = u->crontab; 91 u->crontab = e; 92 } 93 break; 94 case TRUE: 95 if ((tenvp = env_set(envp, envstr)) == NULL) { 96 save_errno = errno; 97 free_user(u); 98 u = NULL; 99 errno = save_errno; 100 goto done; 101 } 102 envp = tenvp; 103 break; 104 } 105 } 106 107 done: 108 env_free(envp); 109 fclose(file); 110 Debug(DPARS, ("...load_user() done\n")) 111 return (u); 112 } 113