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- /*
- Unix SMB/Netbios implementation.
- Version 1.9.
- Password and authentication handling
- 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #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]="";
-
- /* Data to do lanman1/2 password challenge. */
- static unsigned char saved_challenge[8];
- static BOOL challenge_sent=False;
-
- /*******************************************************************
- Get the next challenge value - no repeats.
- ********************************************************************/
- void generate_next_challenge(char *challenge)
- {
- 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);
-
- memcpy(saved_challenge, buf, 8);
- memcpy(challenge,buf,8);
- challenge_sent = True;
- }
-
- /*******************************************************************
- set the last challenge sent, usually from a password server
- ********************************************************************/
- BOOL set_challenge(char *challenge)
- {
- memcpy(saved_challenge,challenge,8);
- challenge_sent = True;
- return(True);
- }
-
- /*******************************************************************
- get the last challenge sent
- ********************************************************************/
- BOOL last_challenge(char *challenge)
- {
- if (!challenge_sent) return(False);
- memcpy(challenge,saved_challenge,8);
- return(True);
- }
-
- /* this holds info on user ids that are already validated for this VC */
- static user_struct *validated_users = NULL;
- static int num_validated_users = 0;
-
- /****************************************************************************
- check if a uid has been validated, and return an pointer to the user_struct
- if it has. NULL if not. vuid is biased by an offset. This allows us to
- tell random client vuid's (normally zero) from valid vuids.
- ****************************************************************************/
- user_struct *get_valid_user_struct(uint16 vuid)
- {
- if (vuid == UID_FIELD_INVALID)
- return NULL;
- vuid -= VUID_OFFSET;
- if ((vuid >= (uint16)num_validated_users) ||
- (validated_users[vuid].uid == -1) || (validated_users[vuid].gid == -1))
- return NULL;
- return &validated_users[vuid];
- }
-
- /****************************************************************************
- invalidate a uid
- ****************************************************************************/
- void invalidate_vuid(uint16 vuid)
- {
- user_struct *vuser = get_valid_user_struct(vuid);
-
- if (vuser == NULL) return;
-
- vuser->uid = -1;
- vuser->gid = -1;
-
- 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;
- }
-
-
- /****************************************************************************
- return a validated username
- ****************************************************************************/
- char *validated_username(uint16 vuid)
- {
- user_struct *vuser = get_valid_user_struct(vuid);
- if (vuser == NULL)
- return 0;
- return(vuser->name);
- }
-
- /****************************************************************************
- 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 *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 (uint16)(i + VUID_OFFSET); /* User already validated */
- }
- #endif
-
- validated_users = (user_struct *)Realloc(validated_users,
- sizeof(user_struct)*
- (num_validated_users+1));
-
- if (!validated_users)
- {
- DEBUG(0,("Failed to realloc users struct!\n"));
- num_validated_users = 0;
- return UID_FIELD_INVALID;
- }
-
- vuser = &validated_users[num_validated_users];
- num_validated_users++;
-
- vuser->uid = uid;
- vuser->gid = gid;
- vuser->guest = guest;
- 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(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);
- }
-
-
- /****************************************************************************
- add a name to the session users list
- ****************************************************************************/
- void add_session_user(char *user)
- {
- fstring suser;
- StrnCpy(suser,user,sizeof(suser)-1);
-
- if (!Get_Pwnam(suser,True)) return;
-
- if (suser && *suser && !in_list(suser,session_users,False))
- {
- if (strlen(suser) + strlen(session_users) + 2 >= sizeof(pstring))
- DEBUG(1,("Too many session users??\n"));
- else
- {
- 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;
- safe_strcpy(pw, p, sizeof(pw)-1);
- 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)
- {
- 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);
- safe_strcat(result,p1+2,sizeof(result)-1);
- StrnCpy(salt,&result[2+i*AUTH_CIPHERTEXT_SEG_CHARS],2);
- p2 += AUTH_CLEARTEXT_SEG_CHARS;
- }
-
- return(result);
- }
- #endif
-
- /****************************************************************************
- update the encrypted smbpasswd file from the plaintext username and password
- *****************************************************************************/
- BOOL update_smbpassword_file( struct passwd *pass, fstring password)
- {
- struct smb_passwd smbpw;
- BOOL ret;
-
- /* Fake up an smb_passwd. */
- smbpw.smb_userid = pass->pw_uid;
- smbpw.smb_name = pass->pw_name;
- smbpw.smb_passwd = NULL;
- smbpw.smb_nt_passwd = NULL;
- smbpw.acct_ctrl = ACB_NORMAL;
-
- /* Here, the flag is one, because we want to ignore the XXXXXXX'd out password */
- ret = change_oem_password( &smbpw, password, 1);
- if (ret == False)
- DEBUG(3,("update_smbpasswd_entry: change_oem_password returned False\n"));
-
- return ret;
- }
-
- /****************************************************************************
- 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);
- }
-
- 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) strncpy(realm, KRB_REALM, sizeof (realm));
-
- (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
- /****************************************************************************
- 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);
- }
-
-
-
- /****************************************************************************
- 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
- {
- 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 (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(strcmp(bigcrypt(password,this_salt),this_crypted) == 0);
- #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.
- ****************************************************************************/
- BOOL smb_password_check(char *password, unsigned char *part_passwd, unsigned char *c8)
- {
- /* Finish the encryption of part_passwd. */
- unsigned char p21[21];
- unsigned char p24[24];
-
- if (part_passwd == NULL)
- DEBUG(10,("No password set - allowing access\n"));
- /* No password set - always true ! */
- if (part_passwd == NULL)
- return 1;
-
- memset(p21,'\0',21);
- memcpy(p21,part_passwd,16);
- E_P24(p21, c8, p24);
- #if DEBUG_PASSWORD
- {
- int i;
- DEBUG(100,("Part password (P16) was |"));
- for(i = 0; i < 16; i++)
- DEBUG(100,("%X ", (unsigned char)part_passwd[i]));
- DEBUG(100,("|\n"));
- DEBUG(100,("Password from client was |"));
- for(i = 0; i < 24; i++)
- DEBUG(100,("%X ", (unsigned char)password[i]));
- DEBUG(100,("|\n"));
- DEBUG(100,("Given challenge was |"));
- for(i = 0; i < 8; i++)
- DEBUG(100,("%X ", (unsigned char)c8[i]));
- DEBUG(100,("|\n"));
- DEBUG(100,("Value from encryption was |"));
- for(i = 0; i < 24; i++)
- DEBUG(100,("%X ", (unsigned char)p24[i]));
- DEBUG(100,("|\n"));
- }
- #endif
- return (memcmp(p24, password, 24) == 0);
- }
-
- /****************************************************************************
- check if a username/password is OK
- ****************************************************************************/
- BOOL password_ok(char *user,char *password, int pwlen, struct passwd *pwd)
- {
- pstring pass2;
- int level = lp_passwordlevel();
- struct passwd *pass;
- char challenge[8];
- BOOL update_encrypted = lp_update_encrypted();
- 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));
-
- if (!pass)
- {
- DEBUG(3,("Couldn't find user %s\n",user));
- return(False);
- }
-
- /* non-null username indicates search by username not smb userid */
- smb_pass = get_smbpwd_entry(user, 0);
- if (!smb_pass)
- {
- DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user));
- return(False);
- }
-
- 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)
- {
- 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,
- (unsigned char *)challenge))
- {
- update_protected_database(user,True);
- return(True);
- }
- DEBUG(4,("NT MD4 password check failed\n"));
- }
- }
-
- /* Try against the lanman password */
- if((smb_pass->smb_passwd == NULL) && (smb_pass->acct_ctrl & ACB_PWNOTREQ ))
- {
- /* No password. */
- DEBUG(1,("password_ok: User %s has NO PASSWORD !\n", user));
- update_protected_database(user,True);
- return(True);
- }
-
- if ((smb_pass->smb_passwd != NULL) &&
- smb_password_check(password, smb_pass->smb_passwd,
- (unsigned char *)challenge))
- {
- update_protected_database(user,True);
- return(True);
- }
-
- 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 )
- {
- pstrcpy(pass->pw_name,mypasswd->ufld.fd_name);
- pstrcpy(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)
- {
- pstrcpy( pass->pw_passwd, ap->a_password );
- endauthent();
- }
- }
- #endif
-
- /* extract relevant info */
- 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()) {
- 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);
- if (pass && update_encrypted)
- update_smbpassword_file(pass,password);
- 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);
- if (pass && update_encrypted)
- update_smbpassword_file(pass,password);
- return(True);
- }
-
- /* give up? */
- if (level < 1)
- {
- update_protected_database(user,False);
-
- /* restore it */
- pstrcpy(password,pass2);
-
- return(False);
- }
-
- /* last chance - all combinations of up to level chars upper! */
- strlower(password);
-
- if (string_combinations(password,password_check,level))
- {
- update_protected_database(user,True);
- if (pass && update_encrypted)
- update_smbpassword_file(pass,password);
- return(True);
- }
-
- update_protected_database(user,False);
-
- /* restore it */
- pstrcpy(password,pass2);
-
- return(False);
- }
-
-
-
- /****************************************************************************
- 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));
-
- 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);
- }
-
- return(ret);
- }
-
-
-
-
- /****************************************************************************
- validate a group username entry. Return the username or NULL
- ****************************************************************************/
- static char *validate_group(char *group,char *password,int pwlen,int snum)
- {
- #ifdef NETGROUP
- {
- char *host, *user, *domain;
- setnetgrent(group);
- while (getnetgrent(&host, &user, &domain)) {
- if (user) {
- if (user_ok(user, snum) &&
- password_ok(user,password,pwlen,NULL)) {
- endnetgrent();
- return(user);
- }
- }
- }
- endnetgrent();
- }
- #endif
-
- #if HAVE_GETGRNAM
- {
- struct group *gptr = (struct group *)getgrnam(group);
- char **member;
- if (gptr)
- {
- member = gptr->gr_mem;
- while (member && *member)
- {
- static fstring name;
- fstrcpy(name,*member);
- if (user_ok(name,snum) &&
- password_ok(name,password,pwlen,NULL))
- return(&name[0]);
- member++;
- }
- #ifdef GROUP_CHECK_PWENT
- {
- struct passwd *pwd;
- static fstring tm;
-
- setpwent ();
- while (pwd = getpwent ()) {
- 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)) {
- fstrcpy(tm, pwd->pw_name);
- endpwent ();
- return tm;
- }
- }
- }
- endpwent ();
- }
- #endif /* GROUP_CHECK_PWENT */
- }
- }
- #endif
- return(NULL);
- }
-
-
-
- /****************************************************************************
- check for authority to login to a service with a given username/password
- ****************************************************************************/
- BOOL authorise_login(int snum,char *user,char *password, int pwlen,
- BOOL *guest,BOOL *force,uint16 vuid)
- {
- BOOL ok = False;
-
- *guest = False;
-
- #if DEBUG_PASSWORD
- DEBUG(100,("checking authorisation on user=%s pass=%s\n",user,password));
- #endif
-
- /* 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
- 4) login as a previously validated user/password pair
- 5) login as the "user =" user with given password
- 6) login as the "user =" user with no password (guest connection)
- 7) login as guest user with no password
-
- if the service is guest_only then steps 1 to 5 are skipped
- */
-
- if (GUEST_ONLY(snum)) *force = True;
-
- if (!(GUEST_ONLY(snum) && GUEST_OK(snum)))
- {
-
- user_struct *vuser = get_valid_user_struct(vuid);
-
- /* check the given username and password */
- if (!ok && (*user) && user_ok(user,snum)) {
- ok = password_ok(user,password, pwlen, NULL);
- if (ok) DEBUG(3,("ACCEPTED: given username password ok\n"));
- }
-
- /* check for a previously registered guest username */
- if (!ok && (vuser != 0) && vuser->guest) {
- if (user_ok(vuser->name,snum) &&
- password_ok(vuser->name, password, pwlen, NULL)) {
- pstrcpy(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);
-
- 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;
- pstrcpy(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)) {
- pstrcpy(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)) {
- ok = True;
- DEBUG(3,("ACCEPTED: hosts equiv or rhosts entry\n"));
- }
-
- /* check the user= fields and the given password */
- if (!ok && lp_username(snum)) {
- char *auser;
- pstring user_list;
- StrnCpy(user_list,lp_username(snum),sizeof(pstring));
-
- string_sub(user_list,"%S",lp_servicename(snum));
-
- for (auser=strtok(user_list,LIST_SEP);
- auser && !ok;
- auser = strtok(NULL,LIST_SEP))
- {
- if (*auser == '@')
- {
- auser = validate_group(auser+1,password,pwlen,snum);
- if (auser)
- {
- ok = True;
- pstrcpy(user,auser);
- DEBUG(3,("ACCEPTED: group username and given password ok\n"));
- }
- }
- else
- {
- fstring user2;
- fstrcpy(user2,auser);
- if (user_ok(user2,snum) &&
- password_ok(user2,password,pwlen,NULL))
- {
- ok = True;
- pstrcpy(user,user2);
- DEBUG(3,("ACCEPTED: user list username and given password ok\n"));
- }
- }
- }
- }
- } /* not guest only */
-
- /* check for a normal guest connection */
- if (!ok && GUEST_OK(snum))
- {
- fstring guestname;
- StrnCpy(guestname,lp_guestaccount(snum),sizeof(guestname)-1);
- if (Get_Pwnam(guestname,True))
- {
- pstrcpy(user,guestname);
- ok = True;
- DEBUG(3,("ACCEPTED: guest account and guest ok\n"));
- }
- else
- DEBUG(0,("Invalid guest account %s??\n",guestname));
- *guest = True;
- *force = True;
- }
-
- if (ok && !user_ok(user,snum))
- {
- DEBUG(0,("rejected invalid user %s\n",user));
- ok = False;
- }
-
- return(ok);
- }
-
-
- /****************************************************************************
- read the a hosts.equiv or .rhosts file and check if it
- allows this user from this machine
- ****************************************************************************/
- static BOOL check_user_equiv(char *user, char *remote, char *equiv_file)
- {
- pstring buf;
- int plus_allowed = 1;
- char *file_host;
- char *file_user;
- FILE *fp = 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))
- {
- trim_string(buf," "," ");
-
- if (buf[0] != '#' && buf[0] != '\n')
- {
- BOOL is_group = False;
- int plus = 1;
- char *bp = buf;
- if (strcmp(buf, "NO_PLUS\n") == 0)
- {
- DEBUG(6, ("check_user_equiv NO_PLUS\n"));
- plus_allowed = 0;
- }
- else {
- if (buf[0] == '+')
- {
- bp++;
- if (*bp == '\n' && plus_allowed)
- {
- /* a bare plus means everbody allowed */
- DEBUG(6, ("check_user_equiv everybody allowed\n"));
- fclose(fp);
- return True;
- }
- }
- else if (buf[0] == '-')
- {
- bp++;
- plus = 0;
- }
- if (*bp == '@')
- {
- is_group = True;
- bp++;
- }
- file_host = strtok(bp, " \t\n");
- file_user = strtok(NULL, " \t\n");
- 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;
-
- #ifdef NETGROUP
- if (is_group)
- {
- static char *mydomain = NULL;
- if (!mydomain)
- yp_get_default_domain(&mydomain);
- if (mydomain && innetgr(file_host,remote,user,mydomain))
- host_ok = True;
- }
- #else
- if (is_group)
- {
- DEBUG(1,("Netgroups not configured - add -DNETGROUP and recompile\n"));
- continue;
- }
- #endif
-
- /* is it this host */
- /* the fact that remote has come from a call of gethostbyaddr
- * means that it may have the fully qualified domain name
- * so we could look up the file version to get it into
- * a canonical form, but I would rather just type it
- * in full in the equiv file
- */
- if (!host_ok && !is_group && strequal(remote, file_host))
- host_ok = True;
-
- if (!host_ok)
- continue;
-
- /* is it this user */
- if (file_user == 0 || strequal(user, file_user))
- {
- fclose(fp);
- DEBUG(5, ("check_user_equiv matched %s%s %s\n",
- (plus ? "+" : "-"), file_host,
- (file_user ? file_user : "")));
- return (plus ? True : False);
- }
- }
- }
- }
- }
- fclose(fp);
- return False;
- }
-
-
- /****************************************************************************
- check for a possible hosts equiv or rhosts entry for the user
- ****************************************************************************/
- BOOL check_hosts_equiv(char *user)
- {
- char *fname = NULL;
- pstring rhostsfile;
- struct passwd *pass = Get_Pwnam(user,True);
-
- if (!pass)
- return(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 (lp_use_rhosts())
- {
- char *home = get_home_dir(user);
- if (home)
- {
- slprintf(rhostsfile, sizeof(rhostsfile)-1, "%s/.rhosts", home);
- if (check_user_equiv(user,client_name(),rhostsfile))
- return(True);
- }
- }
-
- return(False);
- }
-
-
- static struct cli_state cli;
-
- /****************************************************************************
- return the client state structure
- ****************************************************************************/
- struct cli_state *server_client(void)
- {
- return &cli;
- }
-
- /****************************************************************************
- support for server level security
- ****************************************************************************/
- 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;
- }
-
- DEBUG(3,("password server OK\n"));
-
- return &cli;
- }
-
- /****************************************************************************
- 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 (!cli.initialised) {
- DEBUG(1,("password server %s is not connected\n", 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(&cli, user, (char *)badpass, sizeof(badpass),
- (char *)badpass, sizeof(badpass), domain)) {
- 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);
- return False;
- }
- cli_ulogoff(&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(&cli, user, pass, passlen, ntpass, ntpasslen, domain)) {
- DEBUG(1,("password server %s rejected the password\n", cli.desthost));
- return False;
- }
-
- /* if logged in as guest then reject */
- if ((SVAL(cli.inbuf,smb_vwv2) & 1) != 0) {
- DEBUG(0,("password server %s gave us guest only\n", cli.desthost));
- return(False);
- }
-
-
- /*
- * 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", cli.desthost));
- if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
- DEBUG(0,("password server %s refused IPC$ connect\n", cli.desthost));
- return False;
- }
-
- if (!cli_NetWkstaUserLogon(&cli,user,local_machine)) {
- DEBUG(0,("password server %s failed NetWkstaUserLogon\n", cli.desthost));
- cli_tdis(&cli);
- return False;
- }
-
- if (cli.privilages == 0) {
- DEBUG(0,("password server %s gave guest privilages\n", cli.desthost));
- cli_tdis(&cli);
- return False;
- }
-
- if (!strequal(cli.eff_name, user)) {
- DEBUG(0,("password server %s gave different username %s\n",
- cli.desthost,
- cli.eff_name));
- cli_tdis(&cli);
- return False;
- }
- cli_tdis(&cli);
- }
- else {
- DEBUG(3,("skipping NetWkstaUserLogon with password server %s\n", cli.desthost));
- }
-
- DEBUG(3,("password server %s accepted the password\n", cli.desthost));
-
- cli_ulogoff(&cli);
-
- return(True);
- }
-
-
-