usr.sbin/cron/user.c

   1 /*      $NetBSD: user.c,v 1.3 1998/01/31 14:40:45 christos Exp $        */
   2
   3 /* Copyright 1988,1990,1993,1994 by Paul Vixie
   4  * All rights reserved
   5  *
   6  * Distribute freely, except: don't remove my name from the source or
   7  * documentation (don't take credit for my work), mark your changes (don't
   8  * get me blamed for your possible bugs), don't alter or remove this
   9  * notice.  May be sold if buildable source is provided to buyer.  No
  10  * warrantee of any kind, express or implied, is included with this
  11  * software; use at your own risk, responsibility for damages (if any) to
  12  * anyone resulting from the use of this software rests entirely with the
  13  * user.
  14  *
  15  * Send bug reports, bug fixes, enhancements, requests, flames, etc., and
  16  * I'll try to keep a version up to date.  I can be reached as follows:
  17  * Paul Vixie          <paul@vix.com>          uunet!decwrl!vixie!paul
  18  */
  19
  20 #include <sys/cdefs.h>
  21 #if !defined(lint) && !defined(LINT)
  22 #if 0
  23 static char rcsid[] = "Id: user.c,v 2.8 1994/01/15 20:43:43 vixie Exp";
  24 #else
  25 __RCSID("$NetBSD: user.c,v 1.3 1998/01/31 14:40:45 christos Exp $");
  26 #endif
  27 #endif
  28
  29 /* vix 26jan87 [log is in RCS file]
  30  */
  31
  32
  33 #include "cron.h"
  34
  35
  36 void
  37 free_user(user *u)
  38 {
  39         entry   *e, *ne;
  40
  41         free(u->name);
  42         for (e = u->crontab;  e != NULL;  e = ne) {
  43                 ne = e->next;
  44                 free_entry(e);
  45         }
  46         free(u);
  47 }
  48
  49
  50 user *
  51 load_user(int crontab_fd, struct passwd *pw, /* NULL implies syscrontab */
  52           const char *name)
  53 {
  54         char    envstr[MAX_ENVSTR];
  55         FILE    *file;
  56         user    *u;
  57         entry   *e;
  58         int     status;
  59         char    **envp;
  60
  61         if (!(file = fdopen(crontab_fd, "r"))) {
  62                 perror("fdopen on crontab_fd in load_user");
  63                 return NULL;
  64         }
  65
  66         Debug(DPARS, ("load_user()\n"))
  67
  68         /* file is open.  build user entry, then read the crontab file.
  69          */
  70         u = (user *) malloc(sizeof(user));
  71         u->name = strdup(name);
  72         u->crontab = NULL;
  73
  74         /*
  75          * init environment.  this will be copied/augmented for each entry.
  76          */
  77         envp = env_init();
  78
  79         /*
  80          * load the crontab
  81          */
  82         while ((status = load_env(envstr, file)) >= OK) {
  83                 switch (status) {
  84                 case ERR:
  85                         free_user(u);
  86                         u = NULL;
  87                         goto done;
  88                 case FALSE:
  89                         e = load_entry(file, NULL, pw, envp);
  90                         if (e) {
  91                                 e->next = u->crontab;
  92                                 u->crontab = e;
  93                         }
  94                         break;
  95                 case TRUE:
  96                         envp = env_set(envp, envstr);
  97                         break;
  98                 }
  99         }
 100
 101  done:
 102         env_free(envp);
 103         fclose(file);
 104         Debug(DPARS, ("...load_user() done\n"))
 105         return u;
 106 }