347 lines
8.1 KiB
C
347 lines
8.1 KiB
C
/* $NetBSD: supcmisc.c,v 1.10 2001/09/24 13:22:39 wiz Exp $ */
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/*
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* Copyright (c) 1992 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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* sup misc. routines, include list processing.
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**********************************************************************
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* HISTORY
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* Revision 1.5 92/08/11 12:07:22 mrt
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* Added release to FILEWHEN name.
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* Brad's changes: delinted and updated variable arguement usage.
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* [92/07/26 mrt]
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*
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* Revision 1.3 89/08/15 15:31:28 bww
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* Updated to use v*printf() in place of _doprnt().
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* From "[89/04/19 mja]" at CMU.
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* [89/08/15 bww]
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*
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* 27-Dec-87 Glenn Marcy (gm0w) at Carnegie-Mellon University
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* Fixed bug in ugconvert() which left pw uninitialized.
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*
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* 25-May-87 Doug Philips (dwp) at Carnegie-Mellon University
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* Split off from sup.c and changed goaway to use printf
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* instead of notify if thisC is NULL.
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*
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**********************************************************************
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*/
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#include "supcdefs.h"
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#include "supextern.h"
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struct liststruct { /* uid and gid lists */
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char *Lname; /* name */
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int Lnumber; /* uid or gid */
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struct liststruct *Lnext;
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};
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typedef struct liststruct LIST;
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#define HASHBITS 4
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#define HASHSIZE (1<<HASHBITS)
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#define HASHMASK (HASHSIZE-1)
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#define LISTSIZE (HASHSIZE*HASHSIZE)
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static LIST *uidL[LISTSIZE]; /* uid and gid lists */
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static LIST *gidL[LISTSIZE];
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extern COLLECTION *thisC; /* collection list pointer */
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static int Lhash __P((char *));
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static void Linsert __P((LIST **, char *, int));
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static LIST *Llookup __P((LIST **, char *));
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/*************************************************
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*** P R I N T U P D A T E T I M E S ***
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*************************************************/
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void
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prtime ()
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{
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char buf[STRINGLENGTH];
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char relsufix[STRINGLENGTH];
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time_t twhen;
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if ((thisC->Cflags&CFURELSUF) && thisC->Crelease)
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(void) sprintf (relsufix,".%s",thisC->Crelease);
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else
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relsufix[0] = '\0';
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if (chdir (thisC->Cbase) < 0)
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logerr ("Can't change to base directory %s for collection %s",
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thisC->Cbase,thisC->Cname);
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twhen = getwhen(thisC->Cname,relsufix);
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(void) strcpy (buf,ctime (&twhen));
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buf[strlen(buf)-1] = '\0';
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loginfo ("Last update occurred at %s for collection %s%s",
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buf,thisC->Cname,relsufix);
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}
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int establishdir (fname)
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char *fname;
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{
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char dpart[STRINGLENGTH],fpart[STRINGLENGTH];
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path (fname,dpart,fpart);
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return (estabd (fname,dpart));
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}
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int makedir(fname, mode, statp)
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char *fname;
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int mode;
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struct stat *statp;
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{
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if (lstat(fname, statp) != -1 && !S_ISDIR(statp->st_mode)) {
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if (unlink(fname) == -1) {
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notify ("SUP: Can't delete %s\n", fname);
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return -1;
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}
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}
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(void) mkdir (fname, 0755);
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return stat (fname, statp);
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}
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int estabd (fname,dname)
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char *fname,*dname;
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{
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char dpart[STRINGLENGTH],fpart[STRINGLENGTH];
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struct stat sbuf;
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register int x;
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if (stat (dname,&sbuf) >= 0) return (FALSE); /* exists */
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path (dname,dpart,fpart);
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if (strcmp (fpart,".") == 0) { /* dname is / or . */
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notify ("SUP: Can't create directory %s for %s\n",dname,fname);
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return (TRUE);
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}
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x = estabd (fname,dpart);
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if (x) return (TRUE);
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if (makedir(dname, 0755, &sbuf) < 0) {
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vnotify ("SUP: Can't create directory %s for %s\n",dname,fname);
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return TRUE;
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}
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vnotify ("SUP Created directory %s for %s\n",dname,fname);
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return (FALSE);
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}
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/***************************************
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*** L I S T R O U T I N E S ***
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***************************************/
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static
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int Lhash (name)
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char *name;
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{
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/* Hash function is: HASHSIZE * (strlen mod HASHSIZE)
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* + (char mod HASHSIZE)
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* where "char" is last character of name (if name is non-null).
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*/
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register int len;
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register char c;
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len = strlen (name);
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if (len > 0) c = name[len-1];
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else c = 0;
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return (((len&HASHMASK)<<HASHBITS)|(((int)c)&HASHMASK));
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}
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static void
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Linsert (table,name,number)
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LIST **table;
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char *name;
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int number;
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{
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register LIST *l;
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register int lno;
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lno = Lhash (name);
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l = (LIST *) malloc (sizeof(LIST));
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l->Lname = name;
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l->Lnumber = number;
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l->Lnext = table[lno];
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table[lno] = l;
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}
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static
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LIST *Llookup (table,name)
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LIST **table;
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char *name;
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{
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register int lno;
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register LIST *l;
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lno = Lhash (name);
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for (l = table[lno]; l && strcmp(l->Lname,name) != 0; l = l->Lnext);
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return (l);
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}
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void ugconvert (uname,gname,uid,gid,mode)
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char *uname,*gname;
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int *uid,*gid,*mode;
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{
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register LIST *u,*g;
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register struct passwd *pw;
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register struct group *gr;
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struct stat sbuf;
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static int defuid = -1;
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static int defgid;
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static int first = TRUE;
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if (first) {
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bzero ((char *)uidL, sizeof (uidL));
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bzero ((char *)gidL, sizeof (gidL));
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first = FALSE;
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}
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pw = NULL;
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if ((u = Llookup (uidL,uname)) != NULL)
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*uid = u->Lnumber;
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else if ((pw = getpwnam (uname)) != NULL) {
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Linsert (uidL,salloc(uname),pw->pw_uid);
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*uid = pw->pw_uid;
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}
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if (u || pw) {
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if ((g = Llookup (gidL,gname)) != NULL) {
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*gid = g->Lnumber;
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return;
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}
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if ((gr = getgrnam (gname)) != NULL) {
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Linsert (gidL,salloc(gname),gr->gr_gid);
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*gid = gr->gr_gid;
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return;
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}
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if (pw == NULL)
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pw = getpwnam (uname);
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*mode &= ~S_ISGID;
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*gid = pw->pw_gid;
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return;
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}
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*mode &= ~(S_ISUID|S_ISGID);
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if (defuid >= 0) {
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*uid = defuid;
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*gid = defgid;
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return;
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}
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if (stat (".",&sbuf) < 0) {
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*uid = defuid = getuid ();
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*gid = defgid = getgid ();
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return;
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}
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*uid = defuid = sbuf.st_uid;
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*gid = defgid = sbuf.st_gid;
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}
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/*********************************************
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*** U T I L I T Y R O U T I N E S ***
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*********************************************/
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void
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#ifdef __STDC__
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notify (char *fmt,...) /* record error message */
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#else
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/*VARARGS*//*ARGSUSED*/
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notify (va_alist) /* record error message */
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va_dcl
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#endif
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{
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char buf[STRINGLENGTH];
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char collrelname[STRINGLENGTH];
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time_t tloc;
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static FILE *noteF = NULL; /* mail program on pipe */
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va_list ap;
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#ifdef __STDC__
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va_start(ap,fmt);
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#else
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char *fmt;
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va_start(ap);
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fmt = va_arg(ap,char *);
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#endif
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if (fmt == NULL) {
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if (noteF && noteF != stdout)
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(void) pclose (noteF);
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noteF = NULL;
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va_end(ap);
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return;
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}
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if ((thisC->Cflags&CFURELSUF) && thisC->Crelease)
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(void) sprintf (collrelname,"%s-%s",collname,thisC->Crelease);
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else
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(void) strcpy (collrelname,collname);
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if (noteF == NULL) {
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if ((thisC->Cflags&CFMAIL) && thisC->Cnotify) {
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(void) sprintf (buf,"mail -s \"SUP Upgrade of %s\" %s >/dev/null",
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collrelname,thisC->Cnotify);
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noteF = popen (buf,"w");
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if (noteF == NULL) {
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logerr ("Can't send mail to %s for %s",
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thisC->Cnotify,collrelname);
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noteF = stdout;
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}
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} else
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noteF = stdout;
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tloc = time ((time_t *)NULL);
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fprintf (noteF,"SUP Upgrade of %s at %s",
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collrelname,ctime (&tloc));
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(void) fflush (noteF);
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}
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vfprintf(noteF,fmt,ap);
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va_end(ap);
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(void) fflush (noteF);
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}
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void
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lockout (on) /* lock out interrupts */
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int on;
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{
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static sigset_t oset;
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sigset_t nset;
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if (on) {
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sigemptyset(&nset);
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sigaddset(&nset, SIGHUP);
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sigaddset(&nset, SIGINT);
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sigaddset(&nset, SIGTERM);
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sigaddset(&nset, SIGQUIT);
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(void) sigprocmask(SIG_BLOCK, &nset, &oset);
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}
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else {
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(void) sigprocmask(SIG_SETMASK, &oset, NULL);
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}
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}
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char *fmttime (time)
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time_t time;
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{
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static char buf[STRINGLENGTH];
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int len;
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(void) strcpy (buf,ctime (&time));
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len = strlen(buf+4)-6;
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(void) strncpy (buf,buf+4,len);
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buf[len] = '\0';
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return (buf);
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}
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