159 lines
2.6 KiB
C
159 lines
2.6 KiB
C
/* Copyright (C) Charles Forsyth
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* See /doc/license/NOTICE.Plan9-9k.txt for details about the licensing.
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*/
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/* Portions of this file are Copyright (C) 2015-2018 Giacomo Tesio <giacomo@tesio.it>
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* See /doc/license/gpl-2.0.txt for details about the licensing.
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*/
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#include "u.h"
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#include "../port/lib.h"
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#include "mem.h"
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#include "dat.h"
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#include "fns.h"
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#include "../port/error.h"
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#include <authsrv.h>
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char *eve;
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char hostdomain[DOMLEN];
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/*
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* return true if current user is eve
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*/
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int
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iseve(void)
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{
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return jehanne_strcmp(eve, up->user) == 0;
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}
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int
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isevegroup(void)
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{
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return ingroup(up->user, eve);
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}
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int
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sysfversion(int fd, int msize, char *version, int nversion)
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{
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Chan *c;
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int result;
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version = validaddr(version, nversion, 1);
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/* check there's a NUL in the version string */
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if(nversion == 0 || jehanne_memchr(version, 0, nversion) == nil)
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error(Ebadarg);
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c = fdtochan(fd, ORDWR, 0, 1);
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if(waserror()){
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cclose(c);
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nexterror();
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}
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result = mntversion(c, msize, version, nversion);
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cclose(c);
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poperror();
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return result;
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}
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int
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sysfauth(int fd, char *aname)
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{
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Chan *c, *ac;
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aname = validaddr(aname, 1, 0);
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aname = validnamedup(aname, 1);
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if(waserror()){
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jehanne_free(aname);
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nexterror();
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}
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c = fdtochan(fd, ORDWR, 0, 1);
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if(waserror()){
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cclose(c);
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nexterror();
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}
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ac = mntauth(c, aname);
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/* at this point ac is responsible for keeping c alive */
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cclose(c);
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poperror(); /* c */
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jehanne_free(aname);
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poperror(); /* aname */
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if(waserror()){
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cclose(ac);
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nexterror();
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}
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fd = newfd(ac);
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if(fd < 0)
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error(Enofd);
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poperror(); /* ac */
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/* always mark it close on exec */
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ac->flag |= CCEXEC;
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return fd;
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}
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/*
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* called by devcons() for user device
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*
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* anyone can become none
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*/
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long
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userwrite(char* a, long n)
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{
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if(n != 4 || jehanne_strncmp(a, "none", 4) != 0)
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error(Eperm);
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kstrdup(&up->user, "none");
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up->basepri = PriNormal;
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return n;
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}
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/*
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* called by devcons() for host owner/domain
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*
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* writing hostowner also sets user
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*/
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long
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hostownerwrite(char* a, long n)
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{
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char buf[128];
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if(!iseve())
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error(Eperm);
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if(n <= 0 || n >= sizeof buf)
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error(Ebadarg);
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jehanne_memmove(buf, a, n);
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buf[n] = 0;
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renameuser(eve, buf);
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srvrenameuser(eve, buf);
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shrrenameuser(eve, buf);
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kstrdup(&eve, buf);
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kstrdup(&up->user, buf);
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up->basepri = PriNormal;
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return n;
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}
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long
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hostdomainwrite(char* a, long n)
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{
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char buf[DOMLEN];
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if(!iseve())
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error(Eperm);
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if(n >= DOMLEN)
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error(Ebadarg);
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jehanne_memset(buf, 0, DOMLEN);
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jehanne_strncpy(buf, a, n);
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if(buf[0] == 0)
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error(Ebadarg);
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jehanne_memmove(hostdomain, buf, DOMLEN);
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return n;
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}
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