140 lines
2.7 KiB
C
140 lines
2.7 KiB
C
#include <u.h>
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#include <libc.h>
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#include <authsrv.h>
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#include <bio.h>
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#include "authcmdlib.h"
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static char *pbmsg = "AS protocol botch";
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int
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asrdresp(int fd, char *buf, int len)
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{
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char error[AERRLEN];
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if(read(fd, buf, 1) != 1){
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werrstr(pbmsg);
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return -1;
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}
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switch(buf[0]){
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case AuthOK:
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if(readn(fd, buf, len) < 0){
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werrstr(pbmsg);
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return -1;
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}
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break;
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case AuthErr:
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if(readn(fd, error, AERRLEN) < 0){
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werrstr(pbmsg);
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return -1;
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}
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error[AERRLEN-1] = 0;
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werrstr(error);
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return -1;
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default:
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werrstr(pbmsg);
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return -1;
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}
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return 0;
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}
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void
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main(int argc, char **argv)
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{
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int fd;
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Ticketreq tr;
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Ticket t;
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Passwordreq pr;
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char tbuf[TICKETLEN];
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char key[DESKEYLEN];
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char buf[512];
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char *s, *user;
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user = getuser();
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ARGBEGIN{
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}ARGEND
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s = nil;
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if(argc > 0){
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user = argv[0];
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s = strchr(user, '@');
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if(s != nil)
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*s++ = 0;
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if(*user == 0)
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user = getuser();
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}
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fd = authdial(nil, s);
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if(fd < 0)
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error("protocol botch: %r");
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/* send ticket request to AS */
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memset(&tr, 0, sizeof(tr));
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strcpy(tr.uid, user);
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tr.type = AuthPass;
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convTR2M(&tr, buf);
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if(write(fd, buf, TICKREQLEN) != TICKREQLEN)
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error("protocol botch: %r");
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if(asrdresp(fd, buf, TICKETLEN) < 0)
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error("%r");
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memmove(tbuf, buf, TICKETLEN);
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/*
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* get a password from the user and try to decrypt the
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* ticket. If it doesn't work we've got a bad password,
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* give up.
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*/
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readln("Plan 9 Password: ", pr.old, sizeof pr.old, 1);
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passtokey(key, pr.old);
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convM2T(tbuf, &t, key);
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if(t.num != AuthTp || strcmp(t.cuid, tr.uid))
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error("bad password");
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/* loop trying new passwords */
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for(;;){
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pr.changesecret = 0;
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*pr.new = 0;
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readln("change Plan 9 Password? (y/n) ", buf, sizeof buf, 0);
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if(*buf == 'y' || *buf == 'Y'){
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readln("Password(8 to 31 characters): ", pr.new,
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sizeof pr.new, 1);
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readln("Confirm: ", buf, sizeof buf, 1);
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if(strcmp(pr.new, buf)){
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print("!mismatch\n");
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continue;
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}
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}
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readln("change Inferno/POP password? (y/n) ", buf, sizeof buf, 0);
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if(*buf == 'y' || *buf == 'Y'){
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pr.changesecret = 1;
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readln("make it the same as your plan 9 password? (y/n) ",
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buf, sizeof buf, 0);
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if(*buf == 'y' || *buf == 'Y'){
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if(*pr.new == 0)
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strcpy(pr.secret, pr.old);
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else
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strcpy(pr.secret, pr.new);
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} else {
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readln("Secret(0 to 256 characters): ", pr.secret,
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sizeof pr.secret, 1);
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readln("Confirm: ", buf, sizeof buf, 1);
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if(strcmp(pr.secret, buf)){
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print("!mismatch\n");
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continue;
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}
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}
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}
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pr.num = AuthPass;
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convPR2M(&pr, buf, t.key);
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if(write(fd, buf, PASSREQLEN) != PASSREQLEN)
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error("AS protocol botch: %r");
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if(asrdresp(fd, buf, 0) == 0)
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break;
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fprint(2, "passwd: refused: %r\n");
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}
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close(fd);
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exits(0);
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}
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