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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #include <u.h>
- #include <libc.h>
- #include <authsrv.h>
- #include <ctype.h>
- #include <bio.h>
- #include "authcmdlib.h"
- void install(char*, char*, char*, int32_t, int);
- int exists (char*, char*);
- void
- usage(void)
- {
- fprint(2, "usage: changeuser [-pn] user\n");
- exits("usage");
- }
- void
- main(int argc, char *argv[])
- {
- char *u, key[DESKEYLEN], answer[32], p9pass[32];
- int which, i, newkey, newbio, dosecret;
- int32_t t;
- Acctbio a;
- Fs *f;
- srand(getpid()*time(0));
- fmtinstall('K', keyfmt);
- which = 0;
- ARGBEGIN{
- case 'p':
- which |= Plan9;
- break;
- case 'n':
- which |= Securenet;
- break;
- default:
- usage();
- }ARGEND
- argv0 = "changeuser";
- if(argc != 1)
- usage();
- u = *argv;
- if(memchr(u, '\0', ANAMELEN) == 0)
- error("bad user name");
- if(!which)
- which = Plan9;
- newbio = 0;
- t = 0;
- a.user = 0;
- if(which & Plan9){
- f = &fs[Plan9];
- newkey = 1;
- if(exists(f->keys, u)){
- readln("assign new password? [y/n]: ", answer, sizeof answer, 0);
- if(answer[0] != 'y' && answer[0] != 'Y')
- newkey = 0;
- }
- if(newkey)
- getpass(key, p9pass, 1, 1);
- dosecret = getsecret(newkey, p9pass);
- t = getexpiration(f->keys, u);
- install(f->keys, u, key, t, newkey);
- if(dosecret && setsecret(KEYDB, u, p9pass) == 0)
- error("error writing Inferno/pop secret");
- newbio = querybio(f->who, u, &a);
- if(newbio)
- wrbio(f->who, &a);
- print("user %s installed for Plan 9\n", u);
- syslog(0, AUTHLOG, "user %s installed for plan 9", u);
- }
- if(which & Securenet){
- f = &fs[Securenet];
- newkey = 1;
- if(exists(f->keys, u)){
- readln("assign new key? [y/n]: ", answer, sizeof answer, 0);
- if(answer[0] != 'y' && answer[0] != 'Y')
- newkey = 0;
- }
- if(newkey)
- for(i=0; i<DESKEYLEN; i++)
- key[i] = nrand(256);
- if(a.user == 0){
- t = getexpiration(f->keys, u);
- newbio = querybio(f->who, u, &a);
- }
- install(f->keys, u, key, t, newkey);
- if(newbio)
- wrbio(f->who, &a);
- findkey(f->keys, u, key);
- print("user %s: SecureNet key: %K\n", u, key);
- checksum(key, answer);
- print("verify with checksum %s\n", answer);
- print("user %s installed for SecureNet\n", u);
- syslog(0, AUTHLOG, "user %s installed for securenet", u);
- }
- exits(0);
- }
- void
- install(char *db, char *u, char *key, int32_t t, int newkey)
- {
- char buf[KEYDBBUF+ANAMELEN+20];
- int fd;
- if(!exists(db, u)){
- snprint(buf, sizeof buf, "%s/%s", db, u);
- fd = create(buf, OREAD, 0777|DMDIR);
- if(fd < 0)
- error("can't create user %s: %r", u);
- close(fd);
- }
- if(newkey){
- snprint(buf, sizeof buf, "%s/%s/key", db, u);
- fd = open(buf, OWRITE);
- if(fd < 0 || write(fd, key, DESKEYLEN) != DESKEYLEN)
- error("can't set key: %r");
- close(fd);
- }
- if(t == -1)
- return;
- snprint(buf, sizeof buf, "%s/%s/expire", db, u);
- fd = open(buf, OWRITE);
- if(fd < 0 || fprint(fd, "%ld", t) < 0)
- error("can't write expiration time");
- close(fd);
- }
- int
- exists(char *db, char *u)
- {
- char buf[KEYDBBUF+ANAMELEN+6];
- snprint(buf, sizeof buf, "%s/%s/expire", db, u);
- if(access(buf, 0) < 0)
- return 0;
- return 1;
- }
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