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New option `-a otp' to allow OTPs but no ordinary passwords in cleartext.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@888 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
1996-10-25 05:56:18 +00:00
parent 086544629e
commit fd95bc6220
1 changed files with 36 additions and 12 deletions
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50
appl/ftp/ftpd/ftpd.c
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@@ -135,6 +135,8 @@ RCSID("$Id$");
#include <skey.h>
#endif
#include <otp.h>
void yyparse();
#ifndef LOG_FTP
@@ -282,10 +284,12 @@ main(int argc, char **argv)
{
if(strcmp(optarg, "none") == 0)
auth_level = 0;
else if(strcmp(optarg, "safe") == 0)
else if(strcmp(optarg, "otp") == 0)
auth_level = 1;
else if(strcmp(optarg, "user") == 0)
else if(strcmp(optarg, "safe") == 0)
auth_level = 2;
else if(strcmp(optarg, "user") == 0)
auth_level = 3;
else
warnx("bad value for -a");
break;
@@ -499,6 +503,7 @@ static char curname[10]; /* current USER name */
static struct skey sk;
static int permit_passwd;
#endif /* SKEY */
OtpContext otp_ctx;
/*
* USER command.
@@ -516,7 +521,7 @@ user(char *name)
{
char *cp, *shell;
if(auth_level == 2 && !auth_complete){
if(auth_level == 3 && !auth_complete){
reply(530, "No login allowed without authorization.");
return;
}
@@ -549,7 +554,7 @@ user(char *name)
"ANONYMOUS FTP LOGIN REFUSED FROM %s", remotehost);
return;
}
if(auth_level == 1 && !auth_complete){
if(auth_level == 2 && !auth_complete){
reply(530, "Only authorized and anonymous login allowed.");
return;
}
@@ -576,6 +581,7 @@ user(char *name)
if(auth_ok())
ct->userok(name);
else {
#if 0
#ifdef SKEY
char ss[256];
@@ -592,13 +598,28 @@ user(char *name)
reply(331, "Password required for %s.", name);
askpasswd = 1;
}
#endif
char ss[256];
if (otp_challenge(&otp_ctx, name, ss, sizeof(ss)) == 0) {
reply(331, "Password %s for %s required.",
ss, name);
askpasswd = 1;
} else if (auth_level == 0) {
reply(331, "Password required for %s.", name);
askpasswd = 1;
} else
reply(530,
"Only authorized, anonymous and OTP "
"login allowed.");
}
/*
* Delay before reading passwd after first failed
* attempt to slow down passwd-guessing programs.
*/
if (login_attempts)
sleep((unsigned) login_attempts);
sleep(login_attempts);
}
/*
@@ -729,6 +750,7 @@ void
pass(char *passwd)
{
int rval;
/* some clients insists on sending a password */
if (logged_in && askpasswd == 0){
reply(230, "Dumpucko!");
@@ -741,10 +763,9 @@ pass(char *passwd)
}
askpasswd = 0;
if (!guest) { /* "ftp" is only account allowed no password */
if (pw == NULL) {
if (pw == NULL)
rval = 1; /* failure below */
goto skip;
}
#if 0
#ifdef SKEY
if (skeyverify (&sk, passwd) == 0) {
rval = 0;
@@ -754,16 +775,19 @@ pass(char *passwd)
goto skip;
}
#endif
{
#endif
else if (otp_verify_user (&otp_ctx, passwd) == 0) {
rval = 0;
} else if(auth_level == 0) {
char realm[REALM_SZ];
if((rval = krb_get_lrealm(realm, 1)) == KSUCCESS)
rval = krb_verify_user(pw->pw_name, "", realm,
passwd, 1, NULL);
}
if (rval != 0)
if (rval != 0 )
rval = unix_verify_user(pw->pw_name, passwd);
skip:
}
memset (passwd, 0, strlen(passwd));
/*
* If rval == 1, the user failed the authentication check
* above. If rval == 0, either Kerberos or local authentication