#include "includes.h"
-#if (defined(NETGROUP) && defined (AUTOMOUNT))
-#include "rpcsvc/ypclnt.h"
-#endif
-
extern int DEBUGLEVEL;
extern int Protocol;
/* users from session setup */
static pstring session_users="";
-/* 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]="";
+extern pstring scope;
+extern pstring global_myname;
+extern fstring global_myworkgroup;
/* Data to do lanman1/2 password challenge. */
static unsigned char saved_challenge[8];
/*******************************************************************
set the last challenge sent, usually from a password server
********************************************************************/
-BOOL set_challenge(char *challenge)
+BOOL set_challenge(unsigned char *challenge)
{
memcpy(saved_challenge,challenge,8);
challenge_sent = True;
/*******************************************************************
get the last challenge sent
********************************************************************/
-BOOL last_challenge(char *challenge)
+static BOOL last_challenge(unsigned char *challenge)
{
if (!challenge_sent) return(False);
memcpy(challenge,saved_challenge,8);
return NULL;
vuid -= VUID_OFFSET;
if ((vuid >= (uint16)num_validated_users) ||
- (validated_users[vuid].uid == -1) || (validated_users[vuid].gid == -1))
+ (validated_users[vuid].uid == (uid_t)-1) || (validated_users[vuid].gid == (gid_t)-1))
return NULL;
return &validated_users[vuid];
}
if (vuser == NULL) return;
- vuser->uid = -1;
- vuser->gid = -1;
+ vuser->uid = (uid_t)-1;
+ vuser->gid = (gid_t)-1;
vuser->n_sids = 0;
- /* same number of igroups as groups as attrs */
+ /* same number of igroups as groups */
vuser->n_groups = 0;
- if (vuser->groups && (vuser->groups != (gid_t *)vuser->igroups))
- free(vuser->groups);
+ if (vuser->groups)
+ free((char *)vuser->groups);
- if (vuser->igroups) free(vuser->igroups);
- if (vuser->attrs ) free(vuser->attrs);
- if (vuser->sids ) free(vuser->sids);
+ if (vuser->sids)
+ free((char *)vuser->sids);
- vuser->attrs = NULL;
vuser->sids = NULL;
- vuser->igroups = NULL;
vuser->groups = NULL;
}
}
-/****************************************************************************
-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(uid_t uid,gid_t gid, char *unix_name, char *requested_name, BOOL guest)
{
user_struct *vuser;
struct passwd *pwfile; /* for getting real name from passwd file */
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->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,
+ get_unixgroups(unix_name,uid,gid,
&vuser->n_groups,
- &vuser->igroups,
- &vuser->groups,
- &vuser->attrs);
+ &vuser->groups);
- DEBUG(3,("uid %d registered to name %s\n",uid,name));
+ DEBUG(3,("uid %d registered to name %s\n",(int)uid,unix_name));
DEBUG(3, ("Clearing default real name\n"));
fstrcpy(vuser->real_name, "<Full Name>\0");
DEBUG(1,("Too many session users??\n"));
else
{
- strcat(session_users," ");
- strcat(session_users,suser);
+ pstrcat(session_users," ");
+ pstrcat(session_users,suser);
}
}
}
-#ifdef NO_GETSPNAM
-/* a fake shadow password routine which just fills a fake spwd struct
- * with the sp_pwdp field. (sreiz@aie.nl)
- */
-static struct spwd *getspnam(char *username) /* fake shadow password routine */
-{
- FILE *f;
- char line[1024];
- static char pw[20];
- static struct spwd static_spwd;
-
- static_spwd.sp_pwdp=0;
- if (!(f=fopen("/etc/master.passwd", "r")))
- return 0;
- while (fgets(line, 1024, f)) {
- if (!strncmp(line, username, strlen(username)) &&
- line[strlen(username)]==':') { /* found entry */
- char *p, *q;
-
- p=line+strlen(username)+1;
- if ((q=strchr(p, ':'))) {
- *q=0;
- if (q-p+1>20)
- break;
- strcpy(pw, p);
- static_spwd.sp_pwdp=pw;
- }
- break;
- }
- }
- fclose(f);
- if (static_spwd.sp_pwdp)
- return &static_spwd;
- return 0;
-}
-#endif
-
-
-#ifdef OSF1_ENH_SEC
/****************************************************************************
-an enhanced crypt for OSF1
-****************************************************************************/
-static char *osf1_bigcrypt(char *password,char *salt1)
+update the encrypted smbpasswd file from the plaintext username and password
+*****************************************************************************/
+static BOOL update_smbpassword_file(char *user, char *password)
{
- static char result[AUTH_MAX_PASSWD_LENGTH] = "";
- char *p1;
- char *p2=password;
- char salt[3];
- int i;
- int parts = strlen(password) / AUTH_CLEARTEXT_SEG_CHARS;
- if (strlen(password)%AUTH_CLEARTEXT_SEG_CHARS)
- parts++;
-
- StrnCpy(salt,salt1,2);
- StrnCpy(result,salt1,2);
-
- for (i=0; i<parts;i++)
- {
- p1 = crypt(p2,salt);
- strcat(result,p1+2);
- StrnCpy(salt,&result[2+i*AUTH_CIPHERTEXT_SEG_CHARS],2);
- p2 += AUTH_CLEARTEXT_SEG_CHARS;
- }
-
- return(result);
-}
-#endif
-
-
-/****************************************************************************
-update the enhanced security database. Only relevant for OSF1 at the moment.
-****************************************************************************/
-static void update_protected_database( char *user, BOOL result)
-{
-#ifdef OSF1_ENH_SEC
- struct pr_passwd *mypasswd;
- time_t starttime;
-
- mypasswd = getprpwnam (user);
- starttime = time (NULL);
-
- if (result)
- {
- mypasswd->ufld.fd_slogin = starttime;
- mypasswd->ufld.fd_nlogins = 0;
-
- putprpwnam(user,mypasswd);
-
- DEBUG(3,("Update protected database for Account %s after succesful connection\n",user));
- }
- else
- {
- mypasswd->ufld.fd_ulogin = starttime;
- mypasswd->ufld.fd_nlogins = mypasswd->ufld.fd_nlogins + 1;
- if ( mypasswd->ufld.fd_max_tries != 0 && mypasswd->ufld.fd_nlogins > mypasswd->ufld.fd_max_tries )
- {
- mypasswd->uflg.fg_lock = 0;
- DEBUG(3,("Account is disabled -- see Account Administrator.\n"));
- }
- putprpwnam ( user , mypasswd );
- DEBUG(3,("Update protected database for Account %s after refusing connection\n",user));
- }
-#else
- DEBUG(6,("Updated database with %s %s\n",user,BOOLSTR(result)));
-#endif
-}
-
-
-#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
-********************************************************************/
-static BOOL afs_auth(char *this_user,char *password)
-{
- long password_expires = 0;
- char *reason;
-
- /* For versions of AFS prior to 3.3, this routine has few arguments, */
- /* but since I can't find the old documentation... :-) */
- setpag();
- if (ka_UserAuthenticateGeneral(KA_USERAUTH_VERSION+KA_USERAUTH_DOSETPAG,
- this_user,
- (char *) 0, /* instance */
- (char *) 0, /* cell */
- password,
- 0, /* lifetime, default */
- &password_expires, /*days 'til it expires */
- 0, /* spare 2 */
- &reason) == 0)
- return(True);
- return(False);
-}
-#endif
-
-
-#ifdef DFS_AUTH
-
-sec_login_handle_t my_dce_sec_context;
-int dcelogin_atmost_once = 0;
-
-/*******************************************************************
-check on a DCE/DFS authentication
-********************************************************************/
-static BOOL dfs_auth(char *this_user,char *password)
-{
- error_status_t err;
- int err2;
- int prterr;
- boolean32 password_reset;
- sec_passwd_rec_t my_dce_password;
- sec_login_auth_src_t auth_src = sec_login_auth_src_network;
- unsigned char dce_errstr[dce_c_error_string_len];
-
- /*
- * We only go for a DCE login context if the given password
- * matches that stored in the local password file..
- * Assumes local passwd file is kept in sync w/ DCE RGY!
- */
-
- /* 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,
- sec_login_no_flags,
- &my_dce_sec_context,
- &err) == 0)
- {
- dce_error_inq_text(err, dce_errstr, &err2);
- DEBUG(0,("DCE Setup Identity for %s failed: %s\n",
- this_user,dce_errstr));
- return(False);
- }
-
- my_dce_password.version_number = sec_passwd_c_version_none;
- my_dce_password.pepper = NULL;
- my_dce_password.key.key_type = sec_passwd_plain;
- my_dce_password.key.tagged_union.plain = (idl_char *)password;
-
- if (sec_login_valid_and_cert_ident(my_dce_sec_context,
- &my_dce_password,
- &password_reset,
- &auth_src,
- &err) == 0 )
- {
- dce_error_inq_text(err, dce_errstr, &err2);
- DEBUG(0,("DCE Identity Validation failed for principal %s: %s\n",
- this_user,dce_errstr));
-
- return(False);
- }
-
- sec_login_set_context(my_dce_sec_context, &err);
- if (err != error_status_ok )
- {
- dce_error_inq_text(err, dce_errstr, &err2);
- DEBUG(0,("DCE login failed for principal %s, cant set context: %s\n",
- this_user,dce_errstr));
- sec_login_purge_context(my_dce_sec_context, &err);
- return(False);
- }
- else
- {
- DEBUG(0,("DCE login succeeded for principal %s on pid %d\n",
- this_user, getpid()));
- }
-
- dcelogin_atmost_once = 1;
- return (True);
-}
-
-void dfs_unlogin(void)
-{
- error_status_t err;
- int err2;
- unsigned char dce_errstr[dce_c_error_string_len];
-
- sec_login_purge_context(my_dce_sec_context, &err);
- if (err != error_status_ok )
- {
- dce_error_inq_text(err, dce_errstr, &err2);
- DEBUG(0,("DCE purge login context failed for server instance %d: %s\n",
- getpid(), dce_errstr));
- }
-}
-
-#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);
- }
+ struct smb_passwd *smbpw;
+ BOOL ret;
- if ( retval = krb5_parse_name(kcontext, this_user, &kprinc) )
- {
- return(False);
- }
-
- memset((char *)&kcreds, 0, sizeof(kcreds));
-
- kcreds.client = kprinc;
+ become_root(0);
+ smbpw = getsmbpwnam(user);
+ unbecome_root(0);
- 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);
+ if(smbpw == NULL) {
+ DEBUG(0,("getsmbpwnam returned NULL\n"));
+ 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);
+
+ /* 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,("change_oem_password returned False\n"));
}
- 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) strncpy(realm, KRB_REALM, sizeof (realm));
-
- (void) sprintf(tkfile, "/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
-/****************************************************************************
-an enhanced crypt for Linux to handle password longer than 8 characters
-****************************************************************************/
-static int linux_bigcrypt(char *password,char *salt1, char *crypted)
-{
-#define LINUX_PASSWORD_SEG_CHARS 8
- char salt[3];
- int i;
-
- StrnCpy(salt,salt1,2);
- crypted +=2;
-
- 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)
- return(0);
- password += LINUX_PASSWORD_SEG_CHARS;
- crypted += strlen(p);
- }
-
- return(1);
-}
-#endif
-
-
-/****************************************************************************
-apply a function to upper/lower case combinations
-of a string and return true if one of them returns true.
-try all combinations with N uppercase letters.
-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)(char *),int N)
-{
- int len = strlen(s);
- int i;
-
-#ifdef PASSWORD_LENGTH
- len = MIN(len,PASSWORD_LENGTH);
-#endif
-
- if (N <= 0 || offset >= len)
- return(fn(s));
-
- for (i=offset;i<(len-(N-1));i++)
- {
- char c = s[i];
- if (!islower(c)) continue;
- s[i] = toupper(c);
- if (string_combinations2(s,i+1,fn,N-1))
- return(True);
- s[i] = c;
- }
- return(False);
-}
-
-/****************************************************************************
-apply a function to upper/lower case combinations
-of a string and return true if one of them returns true.
-try all combinations with up to N uppercase letters.
-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)(char *),int N)
-{
- int n;
- for (n=1;n<=N;n++)
- if (string_combinations2(s,0,fn,n)) return(True);
- return(False);
+ return ret;
}
-/****************************************************************************
-core of password checking routine
-****************************************************************************/
-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
-
-#ifdef DFS_AUTH
- 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);
-#endif
-
-#ifdef ULTRIX_AUTH
- return (strcmp((char *)crypt16(password, this_salt ),this_crypted) == 0);
-#endif
-
-#ifdef LINUX_BIGCRYPT
- return(linux_bigcrypt(password,this_salt,this_crypted));
-#endif
-
-#ifdef HPUX_10_TRUSTED
- return(bigcrypt(password,this_salt,this_crypted));
-#endif
-
-#ifdef NO_CRYPT
- DEBUG(1,("Warning - no crypt available\n"));
- return(False);
-#else
- return(strcmp((char *)crypt(password,this_salt),this_crypted) == 0);
-#endif
-}
/****************************************************************************
core of smb password checking routine.
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,
+BOOL smb_password_ok(struct smb_passwd *smb_pass, uchar chal[8],
uchar lm_pass[24], uchar nt_pass[24])
{
- uchar challenge[8];
+ uchar challenge[8];
- if (!lm_pass || !smb_pass) return(False);
+ 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);
- }
+ DEBUG(4,("Checking SMB password for user %s\n",
+ smb_pass->unix_name));
- if (!last_challenge(challenge))
- {
- DEBUG(1,("smb_password_ok: no challenge done - password failed\n"));
- return False;
- }
+ if(smb_pass->acct_ctrl & ACB_DISABLED) {
+ DEBUG(3,("account for user %s was disabled.\n",
+ smb_pass->unix_name));
+ return(False);
+ }
- DEBUG(4,("smb_password_ok: Checking SMB password for user %s\n", smb_pass->smb_name));
+ if (chal == NULL)
+ {
+ DEBUG(5,("use last SMBnegprot challenge\n"));
+ if (!last_challenge(challenge))
+ {
+ DEBUG(1,("no challenge done - password failed\n"));
+ return False;
+ }
+ }
+ else
+ {
+ DEBUG(5,("challenge received\n"));
+ memcpy(challenge, chal, 8);
+ }
- 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(nt_pass, 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"));
- }
+ 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,("NT MD4 password check succeeded\n"));
+ return(True);
+ }
+ DEBUG(4,("NT MD4 password check failed\n"));
+ }
- /* Try against the lanman password. smb_pass->smb_passwd == NULL means
- no password, allow access. */
+ /* Try against the lanman password. smb_pass->smb_passwd == NULL means
+ no password, allow access. */
- DEBUG(4,("Checking LM MD4 password\n"));
+ 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_pass->acct_ctrl & ACB_PWNOTREQ)) {
+ DEBUG(4,("no password required for user %s\n",
+ smb_pass->unix_name));
+ return True;
+ }
- if((smb_pass->smb_passwd != NULL) && smb_password_check(lm_pass, smb_pass->smb_passwd, challenge))
- {
- DEBUG(4,("smb_password_ok: LM MD4 password check succeeded\n"));
- return(True);
- }
+ if((smb_pass->smb_passwd != NULL) &&
+ smb_password_check((char *)lm_pass,
+ (uchar *)smb_pass->smb_passwd, challenge)) {
+ DEBUG(4,("LM MD4 password check succeeded\n"));
+ return(True);
+ }
- DEBUG(4,("smb_password_ok: LM MD4 password check failed\n"));
+ DEBUG(4,("LM MD4 password check failed\n"));
- return False;
+ return False;
}
+
/****************************************************************************
-check if a username/password is OK
+check if a username/password is OK assuming the password is a 24 byte
+SMB hash
+return True if the password is correct, False otherwise
****************************************************************************/
-BOOL password_ok(char *user,char *password, int pwlen, struct passwd *pwd)
-{
- pstring pass2;
- int level = lp_passwordlevel();
- struct passwd *pass;
- char challenge[8];
- struct smb_passwd *smb_pass;
- BOOL challenge_done = False;
-
- if (password) password[pwlen] = 0;
- if (pwlen == 24)
- challenge_done = last_challenge(challenge);
-
-#if DEBUG_PASSWORD
- if (challenge_done)
- {
- int i;
- DEBUG(100,("checking user=[%s] pass=[",user));
- 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));
- }
-#endif
-
- if (!password)
- return(False);
-
- if (((!*password) || (!pwlen)) && !lp_null_passwords())
- return(False);
-
- if (pwd && !user)
- {
- pass = (struct passwd *) pwd;
- user = pass->pw_name;
- }
- else
- pass = Get_Pwnam(user,True);
-
- DEBUG(4,("SMB Password - pwlen = %d, challenge_done = %d\n", pwlen, challenge_done));
-
- if ((pwlen == 24) && challenge_done)
- {
- DEBUG(4,("Checking SMB password for user %s (l=24)\n",user));
+BOOL pass_check_smb(char *user, char *domain,
+ uchar *chal, uchar *lm_pwd, uchar *nt_pwd,
+ struct passwd *pwd)
+{
+ struct passwd *pass;
+ struct smb_passwd *smb_pass;
- if (!pass)
+ if (!lm_pwd || !nt_pwd)
{
- DEBUG(3,("Couldn't find user %s\n",user));
- return(False);
+ return(False);
}
- smb_pass = getsmbpwnam(user);
+ if (pwd != NULL && user == NULL)
+ {
+ pass = (struct passwd *) pwd;
+ user = pass->pw_name;
+ }
+ else
+ {
+ pass = Get_Pwnam(user,True);
+ }
- if (!smb_pass)
+ if (pass == NULL)
{
- DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user));
- return(False);
+ DEBUG(3,("Couldn't find user %s\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);
- }
+ smb_pass = getsmbpwnam(user);
- /* Ensure the uid's match */
- if (smb_pass->smb_userid != pass->pw_uid)
+ if (smb_pass == NULL)
{
- DEBUG(3,("Error : UNIX and SMB uids in password files do not match !\n"));
- return(False);
+ DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user));
+ return(False);
}
- if(smb_password_ok( smb_pass, password, password))
- {
- update_protected_database(user,True);
- return(True);
+ /* Quit if the account was disabled. */
+ if(smb_pass->acct_ctrl & ACB_DISABLED) {
+ DEBUG(3,("account for user %s was disabled.\n", user));
+ return(False);
}
- DEBUG(3,("Error smb_password_check failed\n"));
- }
-
- DEBUG(4,("Checking password for user %s (l=%d)\n",user,pwlen));
-
- if (!pass)
- {
- DEBUG(3,("Couldn't find user %s\n",user));
- return(False);
- }
-
-#ifdef SHADOW_PWD
- {
- struct spwd *spass;
-
- /* many shadow systems require you to be root to get the password,
- in most cases this should already be the case when this
- function is called, except perhaps for IPC password changing
- requests */
-
- spass = getspnam(pass->pw_name);
- 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
- {
- struct pr_passwd *pr_pw = getprpwnam(pass->pw_name);
- if (pr_pw && pr_pw->ufld.fd_encrypt)
- pass->pw_passwd = pr_pw->ufld.fd_encrypt;
- }
-#endif
-
-#ifdef HPUX_10_TRUSTED
- {
- struct pr_passwd *pr_pw = getprpwnam(pass->pw_name);
- if (pr_pw && pr_pw->ufld.fd_encrypt)
- pass->pw_passwd = pr_pw->ufld.fd_encrypt;
- }
-#endif
-
-#ifdef OSF1_ENH_SEC
- {
- struct pr_passwd *mypasswd;
- DEBUG(5,("Checking password for user %s in OSF1_ENH_SEC\n",user));
- mypasswd = getprpwnam (user);
- if ( mypasswd )
- {
- strcpy(pass->pw_name,mypasswd->ufld.fd_name);
- strcpy(pass->pw_passwd,mypasswd->ufld.fd_encrypt);
- }
- else
- {
- DEBUG(5,("No entry for user %s in protected database !\n",user));
- return(False);
- }
- }
-#endif
-
-#ifdef ULTRIX_AUTH
- {
- AUTHORIZATION *ap = getauthuid( pass->pw_uid );
- if (ap)
- {
- strcpy( pass->pw_passwd, ap->a_password );
- endauthent();
- }
- }
-#endif
-
- /* extract relevant info */
- strcpy(this_user,pass->pw_name);
- strcpy(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 */
- strcpy(this_crypted,pass->pw_passwd);
-
- if (!*this_crypted) {
- if (!lp_null_passwords()) {
- DEBUG(2,("Disallowing access to %s due to null password\n",this_user));
- return(False);
- }
-#ifndef PWDAUTH
- if (!*password) {
- DEBUG(3,("Allowing access to %s with null password\n",this_user));
- return(True);
- }
-#endif
- }
-
- /* try it as it came to us */
- if (password_check(password))
- {
- update_protected_database(user,True);
- return(True);
- }
-
- /* if the password was given to us with mixed case then we don't
- need to proceed as we know it hasn't been case modified by the
- client */
- if (strhasupper(password) && strhaslower(password))
- return(False);
-
- /* make a copy of it */
- StrnCpy(pass2,password,sizeof(pstring)-1);
-
- /* try all lowercase */
- strlower(password);
- if (password_check(password))
- {
- update_protected_database(user,True);
- return(True);
- }
+ /* Ensure the uid's match */
+ if (smb_pass->unix_uid != pass->pw_uid)
+ {
+ DEBUG(3,("Error : UNIX and SMB uids in password files do not match !\n"));
+ return(False);
+ }
- /* give up? */
- if (level < 1)
- {
- update_protected_database(user,False);
+ if (lm_pwd[0] == '\0' && IS_BITS_SET_ALL(smb_pass->acct_ctrl, ACB_PWNOTREQ) && lp_null_passwords())
+ {
+ DEBUG(3,("account for user %s has no password and null passwords are allowed.\n", smb_pass->unix_name));
+ return(True);
+ }
- /* restore it */
- strcpy(password,pass2);
+ if (smb_password_ok(smb_pass, chal, lm_pwd, nt_pwd))
+ {
+ return(True);
+ }
+
+ DEBUG(3,("Error smb_password_check failed\n"));
+ return False;
+}
- return(False);
- }
+/****************************************************************************
+check if a username/password pair is OK either via the system password
+database or the encrypted SMB password database
+return True if the password is correct, False otherwise
+****************************************************************************/
+BOOL password_ok(char *user, char *password, int pwlen, struct passwd *pwd)
+{
+ if (pwlen == 24 || (lp_encrypted_passwords() && (pwlen == 0) && lp_null_passwords()))
+ {
+ /* if 24 bytes long assume it is an encrypted password */
+ uchar challenge[8];
- /* last chance - all combinations of up to level chars upper! */
- strlower(password);
+ if (!last_challenge(challenge))
+ {
+ DEBUG(0,("Error: challenge not done for user=%s\n", user));
+ return False;
+ }
- if (string_combinations(password,password_check,level))
- {
- update_protected_database(user,True);
- return(True);
- }
+ return pass_check_smb(user, global_myworkgroup,
+ challenge, (uchar *)password, (uchar *)password, pwd);
+ }
- update_protected_database(user,False);
-
- /* restore it */
- strcpy(password,pass2);
-
- return(False);
+ return pass_check(user, password, pwlen, pwd,
+ lp_update_encrypted() ?
+ update_smbpassword_file : NULL);
}
-
-
/****************************************************************************
check if a username is valid
****************************************************************************/
BOOL user_ok(char *user,int snum)
{
- pstring valid, invalid;
- BOOL ret;
-
- StrnCpy(valid, lp_valid_users(snum), sizeof(pstring));
- StrnCpy(invalid, lp_invalid_users(snum), sizeof(pstring));
-
- string_sub(valid,"%S",lp_servicename(snum));
- string_sub(invalid,"%S",lp_servicename(snum));
+ pstring valid, invalid;
+ BOOL ret;
- ret = !user_in_list(user,invalid);
+ StrnCpy(valid, lp_valid_users(snum), sizeof(pstring));
+ StrnCpy(invalid, lp_invalid_users(snum), sizeof(pstring));
- if (ret && valid && *valid)
- ret = user_in_list(user,valid);
+ string_sub(valid,"%S",lp_servicename(snum));
+ string_sub(invalid,"%S",lp_servicename(snum));
+
+ ret = !user_in_list(user,invalid);
+
+ if (ret && valid && *valid) {
+ ret = user_in_list(user,valid);
+ }
- if (ret && lp_onlyuser(snum)) {
- char *user_list = lp_username(snum);
- string_sub(user_list,"%S",lp_servicename(snum));
- ret = user_in_list(user,user_list);
- }
+ if (ret && lp_onlyuser(snum)) {
+ char *user_list = lp_username(snum);
+ string_sub(user_list,"%S",lp_servicename(snum));
+ ret = user_in_list(user,user_list);
+ }
- return(ret);
+ return(ret);
}
****************************************************************************/
static char *validate_group(char *group,char *password,int pwlen,int snum)
{
-#ifdef NETGROUP
+#if defined(HAVE_NETGROUP) && defined(HAVE_GETNETGRENT) && defined(HAVE_SETNETGRENT) && defined(HAVE_ENDNETGRENT)
{
char *host, *user, *domain;
setnetgrent(group);
}
#endif
-#if HAVE_GETGRNAM
+#ifdef HAVE_GETGRNAM
{
struct group *gptr = (struct group *)getgrnam(group);
char **member;
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;
}
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"));
}
int plus_allowed = 1;
char *file_host;
char *file_user;
- FILE *fp = fopen(equiv_file, "r");
+ FILE *fp = sys_fopen(equiv_file, "r");
DEBUG(5, ("check_user_equiv %s %s %s\n", user, remote, equiv_file));
if (! fp) return False;
while(fgets(buf, sizeof(buf), fp))
{
BOOL host_ok = False;
-#ifdef NETGROUP
+#if defined(HAVE_NETGROUP) && defined(HAVE_YP_GET_DEFAULT_DOMAIN)
if (is_group)
{
static char *mydomain = NULL;
#else
if (is_group)
{
- DEBUG(1,("Netgroups not configured - add -DNETGROUP and recompile\n"));
+ DEBUG(1,("Netgroups not configured\n"));
continue;
}
#endif
char *home = get_home_dir(user);
if (home) {
extern int Client;
- sprintf(rhostsfile, "%s/.rhosts", home);
+ slprintf(rhostsfile, sizeof(rhostsfile)-1, "%s/.rhosts", home);
if (check_user_equiv(user,client_name(Client),rhostsfile))
return(True);
}
}
-static struct cli_state cli;
-
/****************************************************************************
return the client state structure
****************************************************************************/
struct cli_state *server_client(void)
{
- return &cli;
+ static struct cli_state pw_cli;
+ return &pw_cli;
}
/****************************************************************************
****************************************************************************/
struct cli_state *server_cryptkey(void)
{
- fstring desthost;
- struct in_addr dest_ip;
- extern fstring local_machine;
- char *p;
-
- if (!cli_initialise(&cli))
- return NULL;
-
- for (p=strtok(lp_passwordserver(),LIST_SEP); p ; p = strtok(NULL,LIST_SEP)) {
- fstrcpy(desthost,p);
- standard_sub_basic(desthost);
- strupper(desthost);
-
- if(!resolve_name( desthost, &dest_ip)) {
- DEBUG(1,("server_cryptkey: Can't resolve address for %s\n",p));
- continue;
- }
-
- if (ismyip(dest_ip)) {
- DEBUG(1,("Password server loop - disabling password server %s\n",p));
- continue;
- }
-
- if (cli_connect(&cli, desthost, &dest_ip)) {
- DEBUG(3,("connected to password server %s\n",p));
- break;
- }
- }
-
- if (!p) {
- DEBUG(1,("password server not available\n"));
- cli_shutdown(&cli);
- return NULL;
- }
-
- if (!cli_session_request(&cli, desthost, 0x20, local_machine)) {
- DEBUG(1,("%s rejected the session\n",desthost));
- cli_shutdown(&cli);
- return NULL;
- }
-
- DEBUG(3,("got session\n"));
-
- if (!cli_negprot(&cli)) {
- DEBUG(1,("%s rejected the negprot\n",desthost));
- cli_shutdown(&cli);
- return NULL;
- }
-
- if (cli.protocol < PROTOCOL_LANMAN2 ||
- !(cli.sec_mode & 1)) {
- DEBUG(1,("%s isn't in user level security mode\n",desthost));
- cli_shutdown(&cli);
- return NULL;
+ if (cli_connect_serverlist(server_client(), lp_passwordserver()))
+ {
+ return server_client();
}
-
- DEBUG(3,("password server OK\n"));
-
- return &cli;
+ return NULL;
}
/****************************************************************************
char *pass, int passlen,
char *ntpass, int ntpasslen)
{
- extern fstring local_machine;
+ struct cli_state *cli;
+ static unsigned char badpass[24];
+ static BOOL tested_password_server = False;
+ static BOOL bad_password_server = False;
- if (!cli.initialised) {
- DEBUG(1,("password server %s is not connected\n", cli.desthost));
- return(False);
- }
+ cli = server_client();
- if (!cli_session_setup(&cli, user, pass, passlen, ntpass, ntpasslen, domain)) {
- DEBUG(1,("password server %s rejected the password\n", cli.desthost));
- return False;
- }
+ if (!cli->initialised) {
+ DEBUG(1,("password server %s is not connected\n", cli->desthost));
+ return(False);
+ }
- /* if logged in as guest then reject */
- if ((SVAL(cli.inbuf,smb_vwv2) & 1) != 0) {
- DEBUG(1,("password server %s gave us guest only\n", cli.desthost));
- cli_ulogoff(&cli);
- 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));
+ }
- if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
- DEBUG(1,("password server %s refused IPC$ connect\n", cli.desthost));
- cli_ulogoff(&cli);
- return False;
- }
+ /*
+ * 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(!tested_password_server) {
+ if (cli_session_setup(cli, user, (char *)badpass, sizeof(badpass),
+ (char *)badpass, sizeof(badpass), domain)) {
+
+ /*
+ * We connected to the password server so we
+ * can say we've tested it.
+ */
+ tested_password_server = True;
+
+ if ((SVAL(cli->inbuf,smb_vwv2) & 1) == 0) {
+ DEBUG(0,("server_validate: password server %s allows users as non-guest \
+with a bad password.\n", 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(cli);
/*
- * 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.
+ * Password server has the bug.
*/
+ bad_password_server = True;
+ return False;
+ }
+ cli_ulogoff(cli);
+ }
+ } else {
- if (lp_net_wksta_user_logon()) {
- DEBUG(3,("trying NetWkstaUserLogon with password server %s\n", cli.desthost));
- if (!cli_NetWkstaUserLogon(&cli,user,local_machine)) {
- DEBUG(1,("password server %s failed NetWkstaUserLogon\n", cli.desthost));
- cli_tdis(&cli);
- cli_ulogoff(&cli);
- return False;
- }
+ /*
+ * We have already tested the password server.
+ * Fail immediately if it has the bug.
+ */
- if (cli.privilages == 0) {
- DEBUG(1,("password server %s gave guest privilages\n", cli.desthost));
- cli_tdis(&cli);
- cli_ulogoff(&cli);
- return False;
- }
+ if(bad_password_server) {
+ DEBUG(0,("server_validate: [1] password server %s allows users as non-guest \
+with a bad password.\n", cli->desthost));
+ DEBUG(0,("server_validate: [1] This is broken (and insecure) behaviour. Please do not \
+use this machine as the password server.\n"));
+ return False;
+ }
+ }
- if (!strequal(cli.eff_name, user)) {
- DEBUG(1,("password server %s gave different username %s\n",
- cli.desthost,
- cli.eff_name));
- cli_tdis(&cli);
- cli_ulogoff(&cli);
- return False;
- }
- }
- else {
- DEBUG(3,("skipping NetWkstaUserLogon with password server %s\n", cli.desthost));
- }
+ /*
+ * 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(cli, user, pass, passlen, ntpass, ntpasslen, domain)) {
+ DEBUG(1,("password server %s rejected the password\n", cli->desthost));
+ return False;
+ }
- DEBUG(3,("password server %s accepted the password\n", cli.desthost));
+ /* if logged in as guest then reject */
+ if ((SVAL(cli->inbuf,smb_vwv2) & 1) != 0) {
+ DEBUG(1,("password server %s gave us guest only\n", cli->desthost));
+ cli_ulogoff(cli);
+ return(False);
+ }
- cli_tdis(&cli);
- cli_ulogoff(&cli);
- return(True);
+ cli_ulogoff(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)
+{
+ uint16 nt_pipe_fnum;
+ unsigned char local_challenge[8];
+ unsigned char local_lm_response[24];
+ unsigned char local_nt_reponse[24];
+ unsigned char trust_passwd[16];
+ NET_ID_INFO_CTR ctr;
+ NET_USER_INFO_3 info3;
+ struct cli_state cli;
+ uint32 smb_uid_low;
+
+ /*
+ * 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;
+ }
+
+ /*
+ * Next, check that the passwords given were encrypted.
+ */
+
+ 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 {
+
+ /*
+ * Encrypted - get the challenge we sent for these
+ * responses.
+ */
+
+ if (!last_challenge(local_challenge)) {
+ DEBUG(0,("domain_client_validate: no challenge done - password failed\n"));
+ return False;
+ }
+ }
+
+ /*
+ * Get the machine account password.
+ */
+ if (!trust_get_passwd( trust_passwd, global_myworkgroup, global_myname))
+ {
+ return False;
+ }
+
+ /*
+ * 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.
+ */
+
+ if (!cli_connect_serverlist(&cli, lp_passwordserver()))
+ {
+ DEBUG(0,("domain_client_validate: Domain password server not available.\n"));
+ return False;
+ }
+
+ /*
+ * Ok - we have an anonymous connection to the IPC$ share.
+ * Now start the NT Domain stuff :-).
+ */
+
+ if(cli_nt_session_open(&cli, PIPE_NETLOGON, &nt_pipe_fnum) == False) {
+ DEBUG(0,("domain_client_validate: unable to open the domain client session to \
+machine %s. Error was : %s.\n", cli.desthost, cli_errstr(&cli)));
+ cli_nt_session_close(&cli, nt_pipe_fnum);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
+ }
+
+ if(cli_nt_setup_creds(&cli, nt_pipe_fnum,
+ cli.mach_acct, trust_passwd, SEC_CHAN_WKSTA) == False)
+ {
+ DEBUG(0,("domain_client_validate: unable to setup the PDC credentials to machine \
+%s. Error was : %s.\n", cli.desthost, cli_errstr(&cli)));
+ cli_nt_session_close(&cli, nt_pipe_fnum);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
+ }
+
+ /* 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, nt_pipe_fnum, 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, cli.desthost, cli_errstr(&cli)));
+ cli_nt_session_close(&cli, nt_pipe_fnum);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
+ }
+
+ /*
+ * Here, if we really want it, we have lots of info about the user in info3.
+ */
+#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, nt_pipe_fnum, &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, cli.desthost, cli_errstr(&cli)));
+ cli_nt_session_close(&cli, nt_pipe_fnum);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return False;
+ }
+#endif /* 0 */
+
+ cli_nt_session_close(&cli, nt_pipe_fnum);
+ cli_ulogoff(&cli);
+ cli_shutdown(&cli);
+ return True;
+}
git.samba.org / samba.git / blobdiff