357 lines
8.9 KiB
C
357 lines
8.9 KiB
C
/*
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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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* $Log: supcmisc.c,v $
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* Revision 1.3 1996/09/05 16:50:10 christos
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* - for portability make sure that we never use "" as a pathname, always convert
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* it to "."
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* - include sockio.h if needed to define SIOCGIFCONF (for svr4)
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* - use POSIX signals and wait macros
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* - add -S silent flag, so that the client does not print messages unless there
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* is something wrong
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* - use flock or lockf as appropriate
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* - use fstatfs or fstatvfs to find out if a filesystem is mounted over nfs,
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* don't depend on the major() = 255 hack; it only works on legacy systems.
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* - use gzip -cf to make sure that gzip compresses the file even when the file
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* would expand.
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* - punt on defining vsnprintf if _IOSTRG is not defined; use sprintf...
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*
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* To compile sup on systems other than NetBSD, you'll need a copy of daemon.c,
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* vis.c, vis.h and sys/cdefs.h. Maybe we should keep those in the distribution?
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*
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* Revision 1.2 1995/06/03 21:21:57 christos
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* Changes to write ascii timestamps in the when files.
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* Looked into making it 64 bit clean, but it is hopeless.
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* Added little program to convert from the old timestamp files
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* into the new ones.
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*
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* Revision 1.1.1.1 1993/05/21 14:52:18 cgd
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* initial import of CMU's SUP to NetBSD
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*
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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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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include "supcdefs.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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#if __STDC__
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int notify (char *, ...);
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#endif
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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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prtime ()
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{
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char buf[STRINGLENGTH];
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char relsufix[STRINGLENGTH];
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long twhen;
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int f;
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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",
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buf,thisC->Cname);
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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 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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(void) mkdir (dname,0755);
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if (stat (dname,&sbuf) < 0) { /* didn't work */
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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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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
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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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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))
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*uid = u->Lnumber;
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else if (pw = getpwnam (uname)) {
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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)) {
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*gid = g->Lnumber;
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return;
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}
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if (gr = getgrnam (gname)) {
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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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#if __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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#if !__STDC__
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char *fmt;
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#endif
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char buf[STRINGLENGTH];
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char collrelname[STRINGLENGTH];
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long tloc;
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static FILE *noteF = NULL; /* mail program on pipe */
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va_list ap;
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#if __STDC__
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va_start(ap,fmt);
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#else
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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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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 ((long *)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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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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long 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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