Unix SMB/Netbios implementation.
Version 1.9.
Password and authentication handling
- Copyright (C) Andrew Tridgell 1992-1995
+ Copyright (C) Andrew Tridgell 1992-1998
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "includes.h"
+#if (defined(NETGROUP) && defined (AUTOMOUNT))
+#include "rpcsvc/ypclnt.h"
+#endif
+
extern int DEBUGLEVEL;
extern int Protocol;
+BOOL global_machine_pasword_needs_changing;
+
/* users from session setup */
static pstring session_users="";
+extern pstring global_myname;
+extern fstring global_myworkgroup;
+
/* these are kept here to keep the string_combinations function simple */
static char this_user[100]="";
static char this_salt[100]="";
static char this_crypted[100]="";
-#ifdef SMB_PASSWD
/* Data to do lanman1/2 password challenge. */
static unsigned char saved_challenge[8];
static BOOL challenge_sent=False;
********************************************************************/
void generate_next_challenge(char *challenge)
{
- static int counter = 0;
- struct timeval tval;
- int v1,v2;
- GetTimeOfDay(&tval);
- v1 = (counter++) + getpid() + tval.tv_sec;
- v2 = (counter++) * getpid() + tval.tv_usec;
- SIVAL(challenge,0,v1);
- SIVAL(challenge,4,v2);
- E1(challenge,"SAMBA",(char *)saved_challenge);
- memcpy(challenge,saved_challenge,8);
- challenge_sent = True;
+#if 0
+ /*
+ * Leave this ifdef'd out while we test
+ * the new crypto random number generator.
+ * JRA.
+ */
+ unsigned char buf[16];
+ static int counter = 0;
+ struct timeval tval;
+ int v1,v2;
+
+ /* get a sort-of random number */
+ GetTimeOfDay(&tval);
+ v1 = (counter++) + getpid() + tval.tv_sec;
+ v2 = (counter++) * getpid() + tval.tv_usec;
+ SIVAL(challenge,0,v1);
+ SIVAL(challenge,4,v2);
+
+ /* mash it up with md4 */
+ mdfour(buf, (unsigned char *)challenge, 8);
+#else
+ unsigned char buf[8];
+
+ generate_random_buffer(buf,8,False);
+#endif
+ memcpy(saved_challenge, buf, 8);
+ memcpy(challenge,buf,8);
+ challenge_sent = True;
}
/*******************************************************************
/*******************************************************************
get the last challenge sent
********************************************************************/
-BOOL last_challenge(char *challenge)
+BOOL last_challenge(unsigned char *challenge)
{
if (!challenge_sent) return(False);
memcpy(challenge,saved_challenge,8);
return(True);
}
-#endif
/* this holds info on user ids that are already validated for this VC */
static user_struct *validated_users = NULL;
****************************************************************************/
user_struct *get_valid_user_struct(uint16 vuid)
{
- if(vuid == UID_FIELD_INVALID)
+ if (vuid == UID_FIELD_INVALID)
return NULL;
vuid -= VUID_OFFSET;
- if((vuid >= (uint16)num_validated_users) ||
+ if ((vuid >= (uint16)num_validated_users) ||
(validated_users[vuid].uid == -1) || (validated_users[vuid].gid == -1))
return NULL;
return &validated_users[vuid];
void invalidate_vuid(uint16 vuid)
{
user_struct *vuser = get_valid_user_struct(vuid);
- if(vuser == 0)
- return;
+
+ if (vuser == NULL) return;
vuser->uid = -1;
vuser->gid = -1;
- vuser->user_ngroups = 0;
- if(vuser->user_groups &&
- (vuser->user_groups != (gid_t *)vuser->user_igroups))
- free(vuser->user_groups);
- vuser->user_groups = NULL;
- if(vuser->user_igroups)
- free(vuser->user_igroups);
- vuser->user_igroups = NULL;
+
+ vuser->n_sids = 0;
+
+ /* same number of igroups as groups as attrs */
+ vuser->n_groups = 0;
+
+ if (vuser->groups && (vuser->groups != (gid_t *)vuser->igroups))
+ free(vuser->groups);
+
+ if (vuser->igroups) free(vuser->igroups);
+ if (vuser->attrs ) free(vuser->attrs);
+ if (vuser->sids ) free(vuser->sids);
+
+ vuser->attrs = NULL;
+ vuser->sids = NULL;
+ vuser->igroups = NULL;
+ vuser->groups = NULL;
}
char *validated_username(uint16 vuid)
{
user_struct *vuser = get_valid_user_struct(vuid);
- if(vuser == 0)
+ if (vuser == NULL)
return 0;
return(vuser->name);
}
+
+/****************************************************************************
+Setup the groups a user belongs to.
+****************************************************************************/
+int setup_groups(char *user, int uid, int gid, int *p_ngroups,
+ int **p_igroups, gid_t **p_groups,
+ int **p_attrs)
+{
+ if (-1 == initgroups(user,gid))
+ {
+ if (getuid() == 0)
+ {
+ DEBUG(0,("Unable to initgroups!\n"));
+ if (gid < 0 || gid > 16000 || uid < 0 || uid > 16000)
+ DEBUG(0,("This is probably a problem with the account %s\n",user));
+ }
+ }
+ else
+ {
+ int i,ngroups;
+ int *igroups;
+ int *attrs;
+ gid_t grp = 0;
+ ngroups = getgroups(0,&grp);
+ if (ngroups <= 0)
+ ngroups = 32;
+ igroups = (int *)malloc(sizeof(int)*ngroups);
+ attrs = (int *)malloc(sizeof(int)*ngroups);
+ for (i=0;i<ngroups;i++)
+ {
+ attrs [i] = 0x7; /* XXXX don't know what NT user attributes are yet! */
+ igroups[i] = 0x42424242;
+ }
+ ngroups = getgroups(ngroups,(gid_t *)igroups);
+
+ if (igroups[0] == 0x42424242)
+ ngroups = 0;
+
+ *p_ngroups = ngroups;
+ *p_attrs = attrs;
+
+ /* The following bit of code is very strange. It is due to the
+ fact that some OSes use int* and some use gid_t* for
+ getgroups, and some (like SunOS) use both, one in prototypes,
+ and one in man pages and the actual code. Thus we detect it
+ dynamically using some very ugly code */
+ if (ngroups > 0)
+ {
+ /* does getgroups return ints or gid_t ?? */
+ static BOOL groups_use_ints = True;
+
+ if (groups_use_ints &&
+ ngroups == 1 &&
+ SVAL(igroups,2) == 0x4242)
+ groups_use_ints = False;
+
+ for (i=0;groups_use_ints && i<ngroups;i++)
+ if (igroups[i] == 0x42424242)
+ groups_use_ints = False;
+
+ if (groups_use_ints)
+ {
+ *p_igroups = igroups;
+ *p_groups = (gid_t *)igroups;
+ }
+ else
+ {
+ gid_t *groups = (gid_t *)igroups;
+ igroups = (int *)malloc(sizeof(int)*ngroups);
+ for (i=0;i<ngroups;i++)
+ {
+ igroups[i] = groups[i];
+ }
+ *p_igroups = igroups;
+ *p_groups = (gid_t *)groups;
+ }
+ }
+ DEBUG(3,("%s is in %d groups\n",user,ngroups));
+ for (i=0;i<ngroups;i++)
+ DEBUG(3,("%d ",igroups[i]));
+ DEBUG(3,("\n"));
+ }
+ return 0;
+}
+
+
/****************************************************************************
register a uid/name pair as being valid and that a valid password
has been given. vuid is biased by an offset. This allows us to
tell random client vuid's (normally zero) from valid vuids.
****************************************************************************/
-uint16 register_vuid(int uid,int gid, char *name,BOOL guest)
+uint16 register_vuid(int uid,int gid, char *unix_name, char *requested_name, BOOL guest)
{
user_struct *vuser;
+ struct passwd *pwfile; /* for getting real name from passwd file */
+
+ /* Ensure no vuid gets registered in share level security. */
+ if(lp_security() == SEC_SHARE)
+ return UID_FIELD_INVALID;
+
+#if 0
+ /*
+ * After observing MS-Exchange services writing to a Samba share
+ * I belive this code is incorrect. Each service does its own
+ * sessionsetup_and_X for the same user, and as each service shuts
+ * down, it does a user_logoff_and_X. As we are consolidating multiple
+ * sessionsetup_and_X's onto the same vuid here, when the first service
+ * shuts down, it invalidates all the open files for the other services.
+ * Hence I am removing this code and forcing each sessionsetup_and_X
+ * to get a new vuid.
+ * Jeremy Allison. (jallison@whistle.com).
+ */
int i;
for(i = 0; i < num_validated_users; i++) {
vuser = &validated_users[i];
- if( vuser->uid == uid )
- return i; /* User already validated */
+ if ( vuser->uid == uid )
+ return (uint16)(i + VUID_OFFSET); /* User already validated */
}
+#endif
validated_users = (user_struct *)Realloc(validated_users,
sizeof(user_struct)*
if (!validated_users)
{
DEBUG(0,("Failed to realloc users struct!\n"));
+ num_validated_users = 0;
return UID_FIELD_INVALID;
}
vuser->uid = uid;
vuser->gid = gid;
vuser->guest = guest;
- strcpy(vuser->name,name);
+ fstrcpy(vuser->name,unix_name);
+ fstrcpy(vuser->requested_name,requested_name);
+
+ vuser->n_sids = 0;
+ vuser->sids = NULL;
- vuser->user_ngroups = 0;
- vuser->user_groups = NULL;
- vuser->user_igroups = NULL;
+ vuser->n_groups = 0;
+ vuser->groups = NULL;
+ vuser->igroups = NULL;
+ vuser->attrs = NULL;
/* Find all the groups this uid is in and store them.
Used by become_user() */
- setup_groups(name,uid,gid,
- &vuser->user_ngroups,
- &vuser->user_igroups,
- &vuser->user_groups);
-
- DEBUG(3,("uid %d registered to name %s\n",uid,name));
+ setup_groups(unix_name,uid,gid,
+ &vuser->n_groups,
+ &vuser->igroups,
+ &vuser->groups,
+ &vuser->attrs);
+
+ DEBUG(3,("uid %d registered to name %s\n",uid,unix_name));
+
+ DEBUG(3, ("Clearing default real name\n"));
+ fstrcpy(vuser->real_name, "<Full Name>\0");
+ if (lp_unix_realname()) {
+ if ((pwfile=getpwnam(vuser->name))!= NULL)
+ {
+ DEBUG(3, ("User name: %s\tReal name: %s\n",vuser->name,pwfile->pw_gecos));
+ fstrcpy(vuser->real_name, pwfile->pw_gecos);
+ }
+ }
return (uint16)((num_validated_users - 1) + VUID_OFFSET);
}
DEBUG(1,("Too many session users??\n"));
else
{
- strcat(session_users," ");
- strcat(session_users,suser);
+ pstrcat(session_users," ");
+ pstrcat(session_users,suser);
}
}
}
{
FILE *f;
char line[1024];
- static char pw[20];
+ static fstring pw;
static struct spwd static_spwd;
static_spwd.sp_pwdp=0;
*q=0;
if (q-p+1>20)
break;
- strcpy(pw, p);
+ fstrcpy(pw, p);
static_spwd.sp_pwdp=pw;
}
break;
for (i=0; i<parts;i++)
{
p1 = crypt(p2,salt);
- strcat(result,p1+2);
+ strncat(result,p1+2,AUTH_MAX_PASSWD_LENGTH-strlen(p1+2)-1);
StrnCpy(salt,&result[2+i*AUTH_CIPHERTEXT_SEG_CHARS],2);
p2 += AUTH_CLEARTEXT_SEG_CHARS;
}
}
#endif
+/****************************************************************************
+update the encrypted smbpasswd file from the plaintext username and password
+*****************************************************************************/
+BOOL update_smbpassword_file( char *user, fstring password)
+{
+ struct smb_passwd *smbpw;
+ BOOL ret;
+
+ become_root(0);
+ smbpw = getsmbpwnam(user);
+ unbecome_root(0);
+
+ if(smbpw == NULL)
+ {
+ DEBUG(0,("update_smbpassword_file: getsmbpwnam returned NULL\n"));
+ return False;
+ }
+
+ /* Here, the flag is one, because we want to ignore the XXXXXXX'd out password */
+ ret = change_oem_password( smbpw, password, True);
+ if (ret == False)
+ DEBUG(3,("update_smbpasswd_file: change_oem_password returned False\n"));
+
+ return ret;
+}
/****************************************************************************
update the enhanced security database. Only relevant for OSF1 at the moment.
}
+#ifdef USE_PAM
+/*******************************************************************
+check on PAM authentication
+********************************************************************/
+
+/* We first need some helper functions */
+#include <security/pam_appl.h>
+/* Static variables used to communicate between the conversation function
+ * and the server_login function
+ */
+static char *PAM_username;
+static char *PAM_password;
+
+/* PAM conversation function
+ * Here we assume (for now, at least) that echo on means login name, and
+ * echo off means password.
+ */
+static int PAM_conv (int num_msg,
+ const struct pam_message **msg,
+ struct pam_response **resp,
+ void *appdata_ptr) {
+ int replies = 0;
+ struct pam_response *reply = NULL;
+
+ #define COPY_STRING(s) (s) ? strdup(s) : NULL
+
+ reply = malloc(sizeof(struct pam_response) * num_msg);
+ if (!reply) return PAM_CONV_ERR;
+
+ for (replies = 0; replies < num_msg; replies++) {
+ switch (msg[replies]->msg_style) {
+ case PAM_PROMPT_ECHO_ON:
+ reply[replies].resp_retcode = PAM_SUCCESS;
+ reply[replies].resp = COPY_STRING(PAM_username);
+ /* PAM frees resp */
+ break;
+ case PAM_PROMPT_ECHO_OFF:
+ reply[replies].resp_retcode = PAM_SUCCESS;
+ reply[replies].resp = COPY_STRING(PAM_password);
+ /* PAM frees resp */
+ break;
+ case PAM_TEXT_INFO:
+ /* fall through */
+ case PAM_ERROR_MSG:
+ /* ignore it... */
+ reply[replies].resp_retcode = PAM_SUCCESS;
+ reply[replies].resp = NULL;
+ break;
+ default:
+ /* Must be an error of some sort... */
+ free (reply);
+ return PAM_CONV_ERR;
+ }
+ }
+ if (reply) *resp = reply;
+ return PAM_SUCCESS;
+}
+static struct pam_conv PAM_conversation = {
+ &PAM_conv,
+ NULL
+};
+
+
+static BOOL pam_auth(char *this_user,char *password)
+{
+ pam_handle_t *pamh;
+ int pam_error;
+
+ /* Now use PAM to do authentication. For now, we won't worry about
+ * session logging, only authentication. Bail out if there are any
+ * errors. Since this is a limited protocol, and an even more limited
+ * function within a server speaking this protocol, we can't be as
+ * verbose as would otherwise make sense.
+ * Query: should we be using PAM_SILENT to shut PAM up?
+ */
+ #define PAM_BAIL if (pam_error != PAM_SUCCESS) { \
+ pam_end(pamh, 0); return False; \
+ }
+ PAM_password = password;
+ PAM_username = this_user;
+ pam_error = pam_start("samba", this_user, &PAM_conversation, &pamh);
+ PAM_BAIL;
+/* Setting PAM_SILENT stops generation of error messages to syslog
+ * to enable debugging on Red Hat Linux set:
+ * /etc/pam.d/samba:
+ * auth required /lib/security/pam_pwdb.so nullok shadow audit
+ * _OR_ change PAM_SILENT to 0 to force detailed reporting (logging)
+ */
+ pam_error = pam_authenticate(pamh, PAM_SILENT);
+ PAM_BAIL;
+ /* It is not clear to me that account management is the right thing
+ * to do, but it is not clear that it isn't, either. This can be
+ * removed if no account management should be done. Alternately,
+ * put a pam_allow.so entry in /etc/pam.conf for account handling. */
+ pam_error = pam_acct_mgmt(pamh, PAM_SILENT);
+ PAM_BAIL;
+ pam_end(pamh, PAM_SUCCESS);
+ /* If this point is reached, the user has been authenticated. */
+ return(True);
+}
+#endif
+
+
#ifdef AFS_AUTH
/*******************************************************************
check on AFS authentication
* Assumes local passwd file is kept in sync w/ DCE RGY!
*/
- if (!strcmp((char *)crypt(password,this_salt),this_crypted) ||
- dcelogin_atmost_once)
- return(False);
+ /* Fix for original (broken) code from Brett Wooldridge <brettw@austin.ibm.com> */
+ if (dcelogin_atmost_once)
+ return (False);
+ /* This can be ifdefed as the DCE check below is stricter... */
+#ifndef NO_CRYPT
+ if ( strcmp((char *)crypt(password,this_salt),this_crypted) )
+ return (False);
+#endif
if (sec_login_setup_identity(
(unsigned char *)this_user,
#endif
+#ifdef KRB5_AUTH
+/*******************************************************************
+check on Kerberos authentication
+********************************************************************/
+static BOOL krb5_auth(char *this_user,char *password)
+{
+ krb5_data tgtname = {
+ 0,
+ KRB5_TGS_NAME_SIZE,
+ KRB5_TGS_NAME
+ };
+ krb5_context kcontext;
+ krb5_principal kprinc;
+ krb5_principal server;
+ krb5_creds kcreds;
+ int options = 0;
+ krb5_address **addrs = (krb5_address **)0;
+ krb5_preauthtype *preauth = NULL;
+ krb5_keytab keytab = NULL;
+ krb5_timestamp now;
+ krb5_ccache ccache = NULL;
+ int retval;
+ char *name;
+
+ if ( retval=krb5_init_context(&kcontext))
+ {
+ return(False);
+ }
+
+ if ( retval = krb5_timeofday(kcontext, &now) )
+ {
+ return(False);
+ }
+
+ if ( retval = krb5_cc_default(kcontext, &ccache) )
+ {
+ return(False);
+ }
+
+ if ( retval = krb5_parse_name(kcontext, this_user, &kprinc) )
+ {
+ return(False);
+ }
+
+ memset((char *)&kcreds, 0, sizeof(kcreds));
+
+ kcreds.client = kprinc;
+
+ if ((retval = krb5_build_principal_ext(kcontext, &server,
+ krb5_princ_realm(kcontext, kprinc)->length,
+ krb5_princ_realm(kcontext, kprinc)->data,
+ tgtname.length,
+ tgtname.data,
+ krb5_princ_realm(kcontext, kprinc)->length,
+ krb5_princ_realm(kcontext, kprinc)->data,
+ 0)))
+ {
+ return(False);
+ }
+
+ kcreds.server = server;
+
+ retval = krb5_get_in_tkt_with_password(kcontext,
+ options,
+ addrs,
+ NULL,
+ preauth,
+ password,
+ 0,
+ &kcreds,
+ 0);
+
+ if ( retval )
+ {
+ return(False);
+ }
+
+ return(True);
+}
+#endif /* KRB5_AUTH */
+
+#ifdef KRB4_AUTH
+/*******************************************************************
+check on Kerberos authentication
+********************************************************************/
+static BOOL krb4_auth(char *this_user,char *password)
+{
+ char realm[REALM_SZ];
+ char tkfile[MAXPATHLEN];
+
+ if (krb_get_lrealm(realm, 1) != KSUCCESS)
+ (void) safe_strcpy(realm, KRB_REALM, sizeof (realm) - 1);
+
+ (void) slprintf(tkfile, sizeof(tkfile) - 1, "/tmp/samba_tkt_%d", getpid());
+
+ krb_set_tkt_string(tkfile);
+ if (krb_verify_user(this_user, "", realm,
+ password, 0,
+ "rmcd") == KSUCCESS) {
+ unlink(tkfile);
+ return 1;
+ }
+ unlink(tkfile);
+ return 0;
+}
+#endif /* KRB4_AUTH */
#ifdef LINUX_BIGCRYPT
/****************************************************************************
for ( i=strlen(password); i > 0; i -= LINUX_PASSWORD_SEG_CHARS) {
char * p = crypt(password,salt) + 2;
- if(strncmp(p, crypted, LINUX_PASSWORD_SEG_CHARS) != 0)
+ if (strncmp(p, crypted, LINUX_PASSWORD_SEG_CHARS) != 0)
return(0);
password += LINUX_PASSWORD_SEG_CHARS;
crypted += strlen(p);
offset is the first char to try and change (start with 0)
it assumes the string starts lowercased
****************************************************************************/
-static BOOL string_combinations2(char *s,int offset,BOOL (*fn)(),int N)
+static BOOL string_combinations2(char *s,int offset,BOOL (*fn)(char *),int N)
{
int len = strlen(s);
int i;
offset is the first char to try and change (start with 0)
it assumes the string starts lowercased
****************************************************************************/
-static BOOL string_combinations(char *s,BOOL (*fn)(),int N)
+static BOOL string_combinations(char *s,BOOL (*fn)(char *),int N)
{
int n;
for (n=1;n<=N;n++)
****************************************************************************/
BOOL password_check(char *password)
{
+
+#ifdef USE_PAM
+/* This falls through if the password check fails
+ - if NO_CRYPT is defined this causes an error msg
+ saying Warning - no crypt available
+ - if NO_CRYPT is NOT defined this is a potential security hole
+ as it may authenticate via the crypt call when PAM
+ settings say it should fail.
+ if (pam_auth(this_user,password)) return(True);
+Hence we make a direct return to avoid a second chance!!!
+*/
+ return (pam_auth(this_user,password));
+#endif
+
#ifdef AFS_AUTH
if (afs_auth(this_user,password)) return(True);
#endif
if (dfs_auth(this_user,password)) return(True);
#endif
+#ifdef KRB5_AUTH
+ if (krb5_auth(this_user,password)) return(True);
+#endif
+
+#ifdef KRB4_AUTH
+ if (krb4_auth(this_user,password)) return(True);
+#endif
+
#ifdef PWDAUTH
if (pwdauth(this_user,password) == 0)
return(True);
#endif
#ifdef OSF1_ENH_SEC
- return(strcmp(osf1_bigcrypt(password,this_salt),this_crypted) == 0);
+ {
+ BOOL ret = (strcmp(osf1_bigcrypt(password,this_salt),this_crypted) == 0);
+ if(!ret) {
+ DEBUG(2,("password_check: OSF1_ENH_SEC failed. Trying normal crypt.\n"));
+ ret = (strcmp((char *)crypt(password,this_salt),this_crypted) == 0);
+ }
+ return ret;
+ }
#endif
#ifdef ULTRIX_AUTH
return(linux_bigcrypt(password,this_salt,this_crypted));
#endif
+#ifdef HPUX_10_TRUSTED
+ return(strcmp(bigcrypt(password,this_salt),this_crypted) == 0);
+#endif
+
#ifdef NO_CRYPT
DEBUG(1,("Warning - no crypt available\n"));
return(False);
#endif
}
-#ifdef SMB_PASSWD
/****************************************************************************
core of smb password checking routine.
****************************************************************************/
unsigned char p21[21];
unsigned char p24[24];
- if(part_passwd == NULL)
+ if (part_passwd == NULL)
DEBUG(10,("No password set - allowing access\n"));
/* No password set - always true ! */
- if(part_passwd == NULL)
+ if (part_passwd == NULL)
return 1;
memset(p21,'\0',21);
#endif
return (memcmp(p24, password, 24) == 0);
}
-#endif
+
+/****************************************************************************
+ Do a specific test for an smb password being correct, given a smb_password and
+ the lanman and NT responses.
+****************************************************************************/
+
+BOOL smb_password_ok(struct smb_passwd *smb_pass,
+ uchar lm_pass[24], uchar nt_pass[24])
+{
+ uchar challenge[8];
+
+ if (!lm_pass || !smb_pass) return(False);
+
+ if(smb_pass->acct_ctrl & ACB_DISABLED)
+ {
+ DEBUG(3,("smb_password_ok: account for user %s was disabled.\n", smb_pass->smb_name));
+ return(False);
+ }
+
+ if (!last_challenge(challenge))
+ {
+ DEBUG(1,("smb_password_ok: no challenge done - password failed\n"));
+ return False;
+ }
+
+ DEBUG(4,("smb_password_ok: Checking SMB password for user %s\n", smb_pass->smb_name));
+
+ if ((Protocol >= PROTOCOL_NT1) && (smb_pass->smb_nt_passwd != NULL))
+ {
+ /* We have the NT MD4 hash challenge available - see if we can
+ use it (ie. does it exist in the smbpasswd file).
+ */
+ DEBUG(4,("smb_password_ok: Checking NT MD4 password\n"));
+ if (smb_password_check((char *)nt_pass, (uchar *)smb_pass->smb_nt_passwd, challenge))
+ {
+ DEBUG(4,("smb_password_ok: NT MD4 password check succeeded\n"));
+ return(True);
+ }
+ DEBUG(4,("smb_password_ok: NT MD4 password check failed\n"));
+ }
+
+ /* Try against the lanman password. smb_pass->smb_passwd == NULL means
+ no password, allow access. */
+
+ DEBUG(4,("Checking LM MD4 password\n"));
+
+ if((smb_pass->smb_passwd == NULL) && (smb_pass->acct_ctrl & ACB_PWNOTREQ))
+ {
+ DEBUG(4,("smb_password_ok: no password required for user %s\n", smb_pass->smb_name));
+ return True;
+ }
+
+ if((smb_pass->smb_passwd != NULL) && smb_password_check((char *)lm_pass, (uchar *)smb_pass->smb_passwd, challenge))
+ {
+ DEBUG(4,("smb_password_ok: LM MD4 password check succeeded\n"));
+ return(True);
+ }
+
+ DEBUG(4,("smb_password_ok: LM MD4 password check failed\n"));
+
+ return False;
+}
/****************************************************************************
check if a username/password is OK
pstring pass2;
int level = lp_passwordlevel();
struct passwd *pass;
-#ifdef SMB_PASSWD
- char challenge[8];
+ uchar challenge[8];
struct smb_passwd *smb_pass;
+ BOOL update_encrypted = lp_update_encrypted();
BOOL challenge_done = False;
-#endif
if (password) password[pwlen] = 0;
-#ifdef SMB_PASSWD
if (pwlen == 24)
challenge_done = last_challenge(challenge);
-#endif
#if DEBUG_PASSWORD
-#ifdef SMB_PASSWD
if (challenge_done)
{
int i;
for( i = 0; i < 24; i++)
DEBUG(100,("%0x ", (unsigned char)password[i]));
DEBUG(100,("]\n"));
+ } else {
+ DEBUG(100,("checking user=[%s] pass=[%s]\n",user,password));
}
- else
-#endif
- DEBUG(100,("checking user=[%s] pass=[%s]\n",user,password));
#endif
if (!password)
else
pass = Get_Pwnam(user,True);
-#ifdef SMB_PASSWD
-
DEBUG(4,("SMB Password - pwlen = %d, challenge_done = %d\n", pwlen, challenge_done));
- if((pwlen == 24) && challenge_done)
+ if ((pwlen == 24) && challenge_done)
{
DEBUG(4,("Checking SMB password for user %s (l=24)\n",user));
return(False);
}
- smb_pass = get_smbpwnam(user);
- if(!smb_pass)
+ smb_pass = getsmbpwnam(user);
+
+ if (!smb_pass)
{
DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user));
return(False);
}
+ /* Quit if the account was disabled. */
+ if(smb_pass->acct_ctrl & ACB_DISABLED)
+ {
+ DEBUG(3,("password_ok: account for user %s was disabled.\n", user));
+ return(False);
+ }
+
/* Ensure the uid's match */
- if(smb_pass->smb_userid != pass->pw_uid)
+ if (smb_pass->smb_userid != pass->pw_uid)
{
DEBUG(3,("Error : UNIX and SMB uids in password files do not match !\n"));
return(False);
}
- if(Protocol >= PROTOCOL_NT1)
- {
- /* We have the NT MD4 hash challenge available - see if we can
- use it (ie. does it exist in the smbpasswd file).
- */
- if(smb_pass->smb_nt_passwd != NULL)
- {
- DEBUG(4,("Checking NT MD4 password\n"));
- if(smb_password_check(password,
- smb_pass->smb_nt_passwd,
- (char *)challenge))
- {
- update_protected_database(user,True);
- return(True);
- }
- DEBUG(4,("NT MD4 password check failed\n"));
- }
- }
-
- /* Try against the lanman password */
-
- if (smb_password_check(password,
- smb_pass->smb_passwd,
- (char *)challenge)) {
- update_protected_database(user,True);
- return(True);
- }
+ if(smb_password_ok( smb_pass, (unsigned char *)password,(uchar *)password))
+ {
+ update_protected_database(user,True);
+ return(True);
+ }
- DEBUG(3,("Error smb_password_check failed\n"));
+ DEBUG(3,("Error smb_password_check failed\n"));
}
-#endif
DEBUG(4,("Checking password for user %s (l=%d)\n",user,pwlen));
if (spass && spass->sp_pwdp)
pass->pw_passwd = spass->sp_pwdp;
}
+#elif defined(IA_UINFO)
+ {
+ /* Need to get password with SVR4.2's ia_ functions instead of
+ get{sp,pw}ent functions. Required by UnixWare 2.x, tested on
+ version 2.1. (tangent@cyberport.com) */
+ uinfo_t uinfo;
+ if (ia_openinfo(pass->pw_name, &uinfo) != -1)
+ ia_get_logpwd(uinfo, &(pass->pw_passwd));
+ }
#endif
#ifdef SecureWare
mypasswd = getprpwnam (user);
if ( mypasswd )
{
- strcpy(pass->pw_name,mypasswd->ufld.fd_name);
- strcpy(pass->pw_passwd,mypasswd->ufld.fd_encrypt);
+ fstrcpy(pass->pw_name,mypasswd->ufld.fd_name);
+ fstrcpy(pass->pw_passwd,mypasswd->ufld.fd_encrypt);
}
else
{
AUTHORIZATION *ap = getauthuid( pass->pw_uid );
if (ap)
{
- strcpy( pass->pw_passwd, ap->a_password );
+ fstrcpy( pass->pw_passwd, ap->a_password );
endauthent();
}
}
#endif
/* extract relevant info */
- strcpy(this_user,pass->pw_name);
- strcpy(this_salt,pass->pw_passwd);
- strcpy(this_crypted,pass->pw_passwd);
+ fstrcpy(this_user,pass->pw_name);
+ fstrcpy(this_salt,pass->pw_passwd);
+#ifdef HPUX
+ /* The crypt on HPUX won't work with more than 2 salt characters. */
+ this_salt[2] = 0;
+#endif /* HPUX */
+ fstrcpy(this_crypted,pass->pw_passwd);
if (!*this_crypted) {
if (!lp_null_passwords()) {
if (password_check(password))
{
update_protected_database(user,True);
+ if (update_encrypted)
+ update_smbpassword_file(user,password);
return(True);
}
if (password_check(password))
{
update_protected_database(user,True);
+ if (update_encrypted)
+ update_smbpassword_file(user,password);
return(True);
}
/* give up? */
- if(level < 1)
+ if (level < 1)
{
update_protected_database(user,False);
/* restore it */
- strcpy(password,pass2);
+ fstrcpy(password,pass2);
return(False);
}
if (string_combinations(password,password_check,level))
{
update_protected_database(user,True);
+ if (update_encrypted)
+ update_smbpassword_file(user,password);
return(True);
}
update_protected_database(user,False);
/* restore it */
- strcpy(password,pass2);
+ fstrcpy(password,pass2);
return(False);
}
while (member && *member)
{
static fstring name;
- strcpy(name,*member);
+ fstrcpy(name,*member);
if (user_ok(name,snum) &&
password_ok(name,password,pwlen,NULL))
return(&name[0]);
if (*(pwd->pw_passwd) && pwd->pw_gid == gptr->gr_gid) {
/* This Entry have PASSWORD and same GID then check pwd */
if (password_ok(NULL, password, pwlen, pwd)) {
- strcpy(tm, pwd->pw_name);
+ fstrcpy(tm, pwd->pw_name);
endpwent ();
return tm;
}
DEBUG(100,("checking authorisation on user=%s pass=%s\n",user,password));
#endif
- /* there are several possabilities:
+ /* there are several possibilities:
1) login as the given user with given password
2) login as a previously registered username with the given password
3) login as a session list username with the given password
if (!ok && (vuser != 0) && vuser->guest) {
if (user_ok(vuser->name,snum) &&
password_ok(vuser->name, password, pwlen, NULL)) {
- strcpy(user, vuser->name);
+ fstrcpy(user, vuser->name);
vuser->guest = False;
DEBUG(3,("ACCEPTED: given password with registered user %s\n", user));
ok = True;
/* now check the list of session users */
- if (!ok)
- {
- char *auser;
- char *user_list = strdup(session_users);
- if (!user_list) return(False);
+ if (!ok)
+ {
+ char *auser;
+ char *user_list = strdup(session_users);
+ if (!user_list) return(False);
- for (auser=strtok(user_list,LIST_SEP);
- !ok && auser;
- auser = strtok(NULL,LIST_SEP))
- {
- fstring user2;
- strcpy(user2,auser);
- if (!user_ok(user2,snum)) continue;
+ for (auser=strtok(user_list,LIST_SEP);
+ !ok && auser;
+ auser = strtok(NULL,LIST_SEP))
+ {
+ fstring user2;
+ fstrcpy(user2,auser);
+ if (!user_ok(user2,snum)) continue;
- if (password_ok(user2,password, pwlen, NULL)) {
- ok = True;
- strcpy(user,user2);
- DEBUG(3,("ACCEPTED: session list username and given password ok\n"));
- }
- }
- free(user_list);
- }
-
- /* check for a previously validated username/password pair */
- if (!ok && !lp_revalidate(snum) &&
- (vuser != 0) && !vuser->guest &&
- user_ok(vuser->name,snum)) {
- strcpy(user,vuser->name);
- *guest = False;
- DEBUG(3,("ACCEPTED: validated uid ok as non-guest\n"));
- ok = True;
+ if (password_ok(user2,password, pwlen, NULL)) {
+ ok = True;
+ fstrcpy(user,user2);
+ DEBUG(3,("ACCEPTED: session list username and given password ok\n"));
+ }
}
+ free(user_list);
+ }
+
+ /* check for a previously validated username/password pair */
+ if (!ok && (!lp_revalidate(snum) || lp_security() > SEC_SHARE) &&
+ (vuser != 0) && !vuser->guest &&
+ user_ok(vuser->name,snum)) {
+ fstrcpy(user,vuser->name);
+ *guest = False;
+ DEBUG(3,("ACCEPTED: validated uid ok as non-guest\n"));
+ ok = True;
+ }
/* check for a rhosts entry */
if (!ok && user_ok(user,snum) && check_hosts_equiv(user)) {
if (auser)
{
ok = True;
- strcpy(user,auser);
+ fstrcpy(user,auser);
DEBUG(3,("ACCEPTED: group username and given password ok\n"));
}
}
else
{
fstring user2;
- strcpy(user2,auser);
+ fstrcpy(user2,auser);
if (user_ok(user2,snum) &&
password_ok(user2,password,pwlen,NULL))
{
ok = True;
- strcpy(user,user2);
+ fstrcpy(user,user2);
DEBUG(3,("ACCEPTED: user list username and given password ok\n"));
}
}
StrnCpy(guestname,lp_guestaccount(snum),sizeof(guestname)-1);
if (Get_Pwnam(guestname,True))
{
- strcpy(user,guestname);
+ fstrcpy(user,guestname);
ok = True;
DEBUG(3,("ACCEPTED: guest account and guest ok\n"));
}
}
file_host = strtok(bp, " \t\n");
file_user = strtok(NULL, " \t\n");
- DEBUG(7, ("check_user_equiv %s %s\n", file_host, file_user));
+ DEBUG(7, ("check_user_equiv %s %s\n", file_host ? file_host : "(null)",
+ file_user ? file_user : "(null)" ));
if (file_host && *file_host)
{
BOOL host_ok = False;
fname = lp_hosts_equiv();
/* note: don't allow hosts.equiv on root */
- if (fname && *fname && (pass->pw_uid != 0))
- {
- if (check_user_equiv(user,client_name(),fname))
- return(True);
- }
+ if (fname && *fname && (pass->pw_uid != 0)) {
+ extern int Client;
+ if (check_user_equiv(user,client_name(Client),fname))
+ return(True);
+ }
if (lp_use_rhosts())
{
char *home = get_home_dir(user);
- if (home)
- {
- sprintf(rhostsfile, "%s/.rhosts", home);
- if (check_user_equiv(user,client_name(),rhostsfile))
- return(True);
- }
+ if (home) {
+ extern int Client;
+ slprintf(rhostsfile, sizeof(rhostsfile)-1, "%s/.rhosts", home);
+ if (check_user_equiv(user,client_name(Client),rhostsfile))
+ return(True);
+ }
}
return(False);
}
-int password_client = -1;
-static fstring pserver;
+static struct cli_state pw_cli;
/****************************************************************************
-attempted support for server level security
+return the client state structure
****************************************************************************/
-BOOL server_cryptkey(char *buf)
+struct cli_state *server_client(void)
{
- pstring inbuf,outbuf;
- fstring pass_protocol;
- extern fstring remote_machine;
- char *p;
- int len;
- fstring desthost;
- struct in_addr dest_ip;
- int port = SMB_PORT;
- BOOL ret;
+ return &pw_cli;
+}
- if (password_client >= 0)
- close(password_client);
- password_client = -1;
+/****************************************************************************
+support for server level security
+****************************************************************************/
+struct cli_state *server_cryptkey(void)
+{
+ fstring desthost;
+ struct in_addr dest_ip;
+ extern fstring local_machine;
+ char *p;
+ BOOL connected_ok = False;
+
+ if (!cli_initialise(&pw_cli))
+ return NULL;
+
+ p = lp_passwordserver();
+ while(p && next_token( &p, desthost, LIST_SEP)) {
+ standard_sub_basic(desthost);
+ strupper(desthost);
+
+ if(!resolve_name( desthost, &dest_ip)) {
+ DEBUG(1,("server_cryptkey: Can't resolve address for %s\n",desthost));
+ continue;
+ }
+
+ if (ismyip(dest_ip)) {
+ DEBUG(1,("Password server loop - disabling password server %s\n",desthost));
+ continue;
+ }
- if (Protocol < PROTOCOL_NT1) {
- strcpy(pass_protocol,"LM1.2X002");
- } else {
- strcpy(pass_protocol,"NT LM 0.12");
- }
+ if (cli_connect(&pw_cli, desthost, &dest_ip)) {
+ DEBUG(3,("connected to password server %s\n",desthost));
+ connected_ok = True;
+ break;
+ }
+ }
- bzero(inbuf,sizeof(inbuf));
- bzero(outbuf,sizeof(outbuf));
+ if (!connected_ok) {
+ DEBUG(0,("password server not available\n"));
+ cli_shutdown(&pw_cli);
+ return NULL;
+ }
- for (p=strtok(lp_passwordserver(),LIST_SEP); p ; p = strtok(NULL,LIST_SEP)) {
- strcpy(desthost,p);
- standard_sub_basic(desthost);
- strupper(desthost);
+ if (!cli_session_request(&pw_cli, desthost, 0x20, local_machine)) {
+ DEBUG(1,("%s rejected the session\n",desthost));
+ cli_shutdown(&pw_cli);
+ return NULL;
+ }
- dest_ip = *interpret_addr2(desthost);
- if (zero_ip(dest_ip)) {
- DEBUG(1,("Can't resolve address for %s\n",p));
- continue;
- }
+ DEBUG(3,("got session\n"));
- if (ismyip(dest_ip)) {
- DEBUG(1,("Password server loop - disabling password server %s\n",p));
- continue;
- }
+ if (!cli_negprot(&pw_cli)) {
+ DEBUG(1,("%s rejected the negprot\n",desthost));
+ cli_shutdown(&pw_cli);
+ return NULL;
+ }
- password_client = open_socket_out(SOCK_STREAM, &dest_ip, port, SHORT_CONNECT_TIMEOUT);
- if (password_client >= 0) {
- DEBUG(3,("connected to password server %s\n",p));
- StrnCpy(pserver,p,sizeof(pserver)-1);
- break;
- }
- }
+ if (pw_cli.protocol < PROTOCOL_LANMAN2 ||
+ !(pw_cli.sec_mode & 1)) {
+ DEBUG(1,("%s isn't in user level security mode\n",desthost));
+ cli_shutdown(&pw_cli);
+ return NULL;
+ }
- if (password_client < 0) {
- DEBUG(1,("password server not available\n"));
- return(False);
- }
+ DEBUG(3,("password server OK\n"));
+ return &pw_cli;
+}
- /* send a session request (RFC 8002) */
+/****************************************************************************
+validate a password with the password server
+****************************************************************************/
+BOOL server_validate(char *user, char *domain,
+ char *pass, int passlen,
+ char *ntpass, int ntpasslen)
+{
+ extern fstring local_machine;
+ static unsigned char badpass[24];
+
+ if (!pw_cli.initialised) {
+ DEBUG(1,("password server %s is not connected\n", pw_cli.desthost));
+ return(False);
+ }
+
+ if(badpass[0] == 0) {
+ memset(badpass, 0x1f, sizeof(badpass));
+ }
+
+ if((passlen == sizeof(badpass)) && !memcmp(badpass, pass, passlen)) {
+ /* Very unlikely, our random bad password is the same as the users
+ password. */
+ memset(badpass, badpass[0]+1, sizeof(badpass));
+ }
+
+ /*
+ * Attempt a session setup with a totally incorrect password.
+ * If this succeeds with the guest bit *NOT* set then the password
+ * server is broken and is not correctly setting the guest bit. We
+ * need to detect this as some versions of NT4.x are broken. JRA.
+ */
+
+ if (cli_session_setup(&pw_cli, user, (char *)badpass, sizeof(badpass),
+ (char *)badpass, sizeof(badpass), domain)) {
+ if ((SVAL(pw_cli.inbuf,smb_vwv2) & 1) == 0) {
+ DEBUG(0,("server_validate: password server %s allows users as non-guest \
+with a bad password.\n", pw_cli.desthost));
+ DEBUG(0,("server_validate: This is broken (and insecure) behaviour. Please do not \
+use this machine as the password server.\n"));
+ cli_ulogoff(&pw_cli);
+ return False;
+ }
+ cli_ulogoff(&pw_cli);
+ }
+
+ /*
+ * Now we know the password server will correctly set the guest bit, or is
+ * not guest enabled, we can try with the real password.
+ */
+
+ if (!cli_session_setup(&pw_cli, user, pass, passlen, ntpass, ntpasslen, domain)) {
+ DEBUG(1,("password server %s rejected the password\n", pw_cli.desthost));
+ return False;
+ }
- /* put in the destination name */
- len = 4;
- p = outbuf+len;
- name_mangle(desthost,p,' ');
- len += name_len(p);
+ /* if logged in as guest then reject */
+ if ((SVAL(pw_cli.inbuf,smb_vwv2) & 1) != 0) {
+ DEBUG(1,("password server %s gave us guest only\n", pw_cli.desthost));
+ cli_ulogoff(&pw_cli);
+ return(False);
+ }
- /* and my name */
- p = outbuf+len;
- name_mangle(remote_machine,p,' ');
- len += name_len(p);
+ /*
+ * This patch from Rob Nielsen <ran@adc.com> makes doing
+ * the NetWksaUserLogon a dynamic, rather than compile-time
+ * parameter, defaulting to on. This is somewhat dangerous
+ * as it allows people to turn off this neccessary check,
+ * but so many people have had problems with this that I
+ * think it is a neccessary change. JRA.
+ */
+
+ if (lp_net_wksta_user_logon()) {
+ DEBUG(3,("trying NetWkstaUserLogon with password server %s\n", pw_cli.desthost));
+
+ if (!cli_send_tconX(&pw_cli, "IPC$", "IPC", "", 1)) {
+ DEBUG(0,("password server %s refused IPC$ connect\n", pw_cli.desthost));
+ cli_ulogoff(&pw_cli);
+ return False;
+ }
+
+ if (!cli_NetWkstaUserLogon(&pw_cli,user,local_machine)) {
+ DEBUG(0,("password server %s failed NetWkstaUserLogon\n", pw_cli.desthost));
+ cli_tdis(&pw_cli);
+ cli_ulogoff(&pw_cli);
+ return False;
+ }
- _smb_setlen(outbuf,len);
- CVAL(outbuf,0) = 0x81;
+ if (pw_cli.privilages == 0) {
+ DEBUG(0,("password server %s gave guest privilages\n", pw_cli.desthost));
+ cli_tdis(&pw_cli);
+ cli_ulogoff(&pw_cli);
+ return False;
+ }
- send_smb(password_client,outbuf);
-
-
- if (!receive_smb(password_client,inbuf,5000) ||
- CVAL(inbuf,0) != 0x82) {
- DEBUG(1,("%s rejected the session\n",pserver));
- close(password_client); password_client = -1;
- return(False);
+ if (!strequal(pw_cli.eff_name, user)) {
+ DEBUG(0,("password server %s gave different username %s\n",
+ pw_cli.desthost,
+ pw_cli.eff_name));
+ cli_tdis(&pw_cli);
+ cli_ulogoff(&pw_cli);
+ return False;
+ }
+ cli_tdis(&pw_cli);
+ }
+ else {
+ DEBUG(3,("skipping NetWkstaUserLogon with password server %s\n", pw_cli.desthost));
+ }
+
+ DEBUG(3,("password server %s accepted the password\n", pw_cli.desthost));
+
+ cli_ulogoff(&pw_cli);
+
+ return(True);
+}
+
+/***********************************************************************
+ Do the same as security=server, but using NT Domain calls and a session
+ key from the machine password.
+************************************************************************/
+
+BOOL domain_client_validate( char *user, char *domain,
+ char *smb_apasswd, int smb_apasslen,
+ char *smb_ntpasswd, int smb_ntpasslen)
+{
+ unsigned char local_challenge[8];
+ unsigned char local_lm_response[24];
+ unsigned char local_nt_reponse[24];
+ unsigned char trust_passwd[16];
+ time_t lct;
+ fstring remote_machine;
+ char *p;
+ struct in_addr dest_ip;
+ NET_ID_INFO_CTR ctr;
+ NET_USER_INFO_3 info3;
+ struct cli_state cli;
+ uint32 smb_uid_low;
+ BOOL connected_ok = False;
+
+ /*
+ * Check that the requested domain is not our own machine name.
+ * If it is, we should never check the PDC here, we use our own local
+ * password file.
+ */
+
+ if(strequal( domain, global_myname)) {
+ DEBUG(3,("domain_client_validate: Requested domain was for this machine.\n"));
+ return False;
}
- DEBUG(3,("got session\n"));
+ /*
+ * Next, check that the passwords given were encrypted.
+ */
- bzero(outbuf,smb_size);
+ if(((smb_apasslen != 24) && (smb_apasslen != 0)) ||
+ ((smb_ntpasslen != 24) && (smb_ntpasslen != 0))) {
+
+ /*
+ * Not encrypted - do so.
+ */
+
+ DEBUG(3,("domain_client_validate: User passwords not in encrypted format.\n"));
+ generate_random_buffer( local_challenge, 8, False);
+ SMBencrypt( (uchar *)smb_apasswd, local_challenge, local_lm_response);
+ SMBNTencrypt((uchar *)smb_ntpasswd, local_challenge, local_nt_reponse);
+ smb_apasslen = 24;
+ smb_ntpasslen = 24;
+ smb_apasswd = (char *)local_lm_response;
+ smb_ntpasswd = (char *)local_nt_reponse;
+ } else {
- /* setup the protocol string */
- set_message(outbuf,0,strlen(pass_protocol)+2,True);
- p = smb_buf(outbuf);
- *p++ = 2;
- strcpy(p,pass_protocol);
+ /*
+ * Encrypted - get the challenge we sent for these
+ * responses.
+ */
- CVAL(outbuf,smb_com) = SMBnegprot;
- CVAL(outbuf,smb_flg) = 0x8;
- SSVAL(outbuf,smb_flg2,0x1);
+ if (!last_challenge(local_challenge)) {
+ DEBUG(0,("domain_client_validate: no challenge done - password failed\n"));
+ return False;
+ }
+ }
- send_smb(password_client,outbuf);
- ret = receive_smb(password_client,inbuf,5000);
+ /*
+ * Get the machine account password.
+ */
+ if(!trust_password_lock( global_myworkgroup, global_myname, False)) {
+ DEBUG(0,("domain_client_validate: unable to open the machine account password file for \
+machine %s in domain %s.\n", global_myname, global_myworkgroup ));
+ return False;
+ }
- if (!ret || CVAL(inbuf,smb_rcls) || SVAL(inbuf,smb_vwv0)) {
- DEBUG(1,("%s rejected the protocol\n",pserver));
- close(password_client); password_client= -1;
- return(False);
+ if(get_trust_account_password( trust_passwd, &lct) == False) {
+ DEBUG(0,("domain_client_validate: unable to read the machine account password for \
+machine %s in domain %s.\n", global_myname, global_myworkgroup ));
+ trust_password_unlock();
+ return False;
}
- if (!(CVAL(inbuf,smb_vwv1) & 1)) {
- DEBUG(1,("%s isn't in user level security mode\n",pserver));
- close(password_client); password_client= -1;
- return(False);
+ trust_password_unlock();
+
+ /*
+ * Here we should check the last change time to see if the machine
+ * password needs changing..... TODO... JRA.
+ */
+
+ if(time(NULL) > lct + lp_machine_password_timeout())
+ global_machine_pasword_needs_changing = True;
+
+ /*
+ * At this point, smb_apasswd points to the lanman response to
+ * the challenge in local_challenge, and smb_ntpasswd points to
+ * the NT response to the challenge in local_challenge. Ship
+ * these over the secure channel to a domain controller and
+ * see if they were valid.
+ */
+
+ memset(&cli, '\0', sizeof(struct cli_state));
+ if(cli_initialise(&cli) == False) {
+ DEBUG(0,("domain_client_validate: unable to initialize client connection.\n"));
+ return False;
}
- memcpy(buf,inbuf,smb_len(inbuf)+4);
+ /*
+ * Treat each name in the 'password server =' line as a potential
+ * PDC/BDC. Contact each in turn and try and authenticate.
+ */
- DEBUG(3,("password server OK\n"));
+ p = lp_passwordserver();
+ while(p && next_token( &p, remote_machine, LIST_SEP)) {
- return(True);
-}
+ standard_sub_basic(remote_machine);
+ strupper(remote_machine);
+
+ if(!resolve_name( remote_machine, &dest_ip)) {
+ DEBUG(1,("domain_client_validate: Can't resolve address for %s\n", remote_machine));
+ continue;
+ }
+
+ if (ismyip(dest_ip)) {
+ DEBUG(1,("domain_client_validate: Password server loop - not using password server %s\n",remote_machine));
+ continue;
+ }
+
+ if (!cli_connect(&cli, remote_machine, &dest_ip)) {
+ DEBUG(0,("domain_client_validate: unable to connect to SMB server on \
+machine %s. Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
+ continue;
+ }
+
+ if (!cli_session_request(&cli, remote_machine, 0x20, global_myname)) {
+ DEBUG(0,("domain_client_validate: machine %s rejected the session setup. \
+Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
+ cli_shutdown(&cli);
+ continue;
+ }
+
+ cli.protocol = PROTOCOL_NT1;
-/****************************************************************************
-attempted support for server level security
-****************************************************************************/
-BOOL server_validate(char *buf)
-{
- pstring inbuf,outbuf;
- BOOL ret;
+ if (!cli_negprot(&cli)) {
+ DEBUG(0,("domain_client_validate: machine %s rejected the negotiate protocol. \
+Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
+ cli_shutdown(&cli);
+ continue;
+ }
+
+ if (cli.protocol != PROTOCOL_NT1) {
+ DEBUG(0,("domain_client_validate: machine %s didn't negotiate NT protocol.\n",
+ remote_machine));
+ cli_shutdown(&cli);
+ continue;
+ }
- if (password_client < 0) {
- DEBUG(1,("%s not connected\n",pserver));
- return(False);
- }
+ /*
+ * Do an anonymous session setup.
+ */
+
+ if (!cli_session_setup(&cli, "", "", 0, "", 0, "")) {
+ DEBUG(0,("domain_client_validate: machine %s rejected the session setup. \
+Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
+ cli_shutdown(&cli);
+ continue;
+ }
- bzero(inbuf,sizeof(inbuf));
- memcpy(outbuf,buf,sizeof(outbuf));
+ if (!(cli.sec_mode & 1)) {
+ DEBUG(1,("domain_client_validate: machine %s isn't in user level security mode\n",
+ remote_machine));
+ cli_shutdown(&cli);
+ continue;
+ }
- /* send a session setup command */
- CVAL(outbuf,smb_flg) = 0x8;
- SSVAL(outbuf,smb_flg2,0x1);
- CVAL(outbuf,smb_vwv0) = 0xFF;
+ if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
+ DEBUG(0,("domain_client_validate: machine %s rejected the tconX on the IPC$ share. \
+Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
+ cli_shutdown(&cli);
+ continue;
+ }
- set_message(outbuf,smb_numwords(outbuf),smb_buflen(outbuf),False);
+ /*
+ * We have an anonymous connection to IPC$.
+ */
+ connected_ok = True;
+ break;
+ }
- SCVAL(inbuf,smb_rcls,1);
+ if (!connected_ok) {
+ DEBUG(0,("domain_client_validate: Domain password server not available.\n"));
+ cli_shutdown(&cli);
+ return False;
+ }
- send_smb(password_client,outbuf);
- ret = receive_smb(password_client,inbuf,5000);
+ /*
+ * Ok - we have an anonymous connection to the IPC$ share.
+ * Now start the NT Domain stuff :-).
+ */
- if (!ret || CVAL(inbuf,smb_rcls) != 0) {
- DEBUG(1,("password server %s rejected the password\n",pserver));
- return(False);
+ if(cli_nt_session_open(&cli, PIPE_NETLOGON, False) == False) {
+ DEBUG(0,("domain_client_validate: unable to open the domain client session to \
+machine %s. Error was : %s.\n", remote_machine, cli_errstr(&cli)));
+ cli_nt_session_close(&cli);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
}
- /* if logged in as guest then reject */
- if ((SVAL(inbuf,smb_vwv2) & 1) != 0) {
- DEBUG(1,("password server %s gave us guest only\n",pserver));
- return(False);
+ if(cli_nt_setup_creds(&cli, trust_passwd) == False) {
+ DEBUG(0,("domain_client_validate: unable to setup the PDC credentials to machine \
+%s. Error was : %s.\n", remote_machine, cli_errstr(&cli)));
+ cli_nt_session_close(&cli);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
}
- DEBUG(3,("password server %s accepted the password\n",pserver));
+ /* We really don't care what LUID we give the user. */
+ generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
+
+ if(cli_nt_login_network(&cli, domain, user, smb_uid_low, (char *)local_challenge,
+ ((smb_apasslen != 0) ? smb_apasswd : NULL),
+ ((smb_ntpasslen != 0) ? smb_ntpasswd : NULL),
+ &ctr, &info3) == False) {
+ DEBUG(0,("domain_client_validate: unable to validate password for user %s in domain \
+%s to Domain controller %s. Error was %s.\n", user, domain, remote_machine, cli_errstr(&cli)));
+ cli_nt_session_close(&cli);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
+ }
-#if !KEEP_PASSWORD_SERVER_OPEN
- close(password_client); password_client= -1;
-#endif
+ /*
+ * Here, if we really want it, we have lots of info about the user in info3.
+ */
- return(True);
-}
+#if 0
+ /*
+ * We don't actually need to do this - plus it fails currently with
+ * NT_STATUS_INVALID_INFO_CLASS - we need to know *exactly* what to
+ * send here. JRA.
+ */
+ if(cli_nt_logoff(&cli, &ctr) == False) {
+ DEBUG(0,("domain_client_validate: unable to log off user %s in domain \
+%s to Domain controller %s. Error was %s.\n", user, domain, remote_machine, cli_errstr(&cli)));
+ cli_nt_session_close(&cli);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
+ }
+#endif /* 0 */
+ cli_nt_session_close(&cli);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return True;
+}
git.samba.org / samba.git / blobdiff