diff options
Diffstat (limited to 'source3/smbd/password.c')
| -rw-r--r-- | source3/smbd/password.c | 1703 |
1 files changed, 450 insertions, 1253 deletions
diff --git a/source3/smbd/password.c b/source3/smbd/password.c index 87c1fef94c..629157f22d 100644 --- a/source3/smbd/password.c +++ b/source3/smbd/password.c @@ -1,8 +1,7 @@ /* - Unix SMB/Netbios implementation. - Version 1.9. + Unix SMB/CIFS implementation. Password and authentication handling - Copyright (C) Andrew Tridgell 1992-1995 + Copyright (C) Andrew Tridgell 1992-1998 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -20,1397 +19,595 @@ */ #include "includes.h" -#include "loadparm.h" - -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]=""; - -#ifdef SMB_PASSWD -/* 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) -{ - extern void E1(char *,char *,char *); - static int counter = 0; - struct timeval tval; - int v1,v2; - GetTimeOfDay(&tval); - v1 = (counter++) + getpid() + tval.tv_sec; - v2 = (counter++) * getpid() + tval.tv_usec; - SIVAL(challenge,0,v1); - SIVAL(challenge,4,v2); - E1(challenge,"SAMBA",saved_challenge); - memcpy(challenge,saved_challenge,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); -} -#endif - /* 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 index if it has. -1 if not -****************************************************************************/ -int valid_uid(int uid) -{ - int i; - if (uid == -1) return(-1); - - for (i=0;i<num_validated_users;i++) - if (validated_users[i].uid == uid) - { - DEBUG(3,("valid uid %d mapped to vuid %d (user=%s)\n", - uid,i,validated_users[i].name)); - return(i); - } - return(-1); -} +static user_struct *validated_users; +static int next_vuid = VUID_OFFSET; +static int num_validated_vuids; /**************************************************************************** check if a uid has been validated, and return an pointer to the user_struct -if it has. NULL if not -****************************************************************************/ -user_struct *get_valid_user_struct(int uid) -{ - int vuid = valid_uid(uid); - if(vuid == -1 || validated_users[vuid].guest) - return NULL; - return &validated_users[vuid]; -} - -/**************************************************************************** -invalidate a uid +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. ****************************************************************************/ -void invalidate_uid(int uid) +user_struct *get_valid_user_struct(uint16 vuid) { - int i; - for (i=0;i<num_validated_users;i++) - if (validated_users[i].uid == uid) - { - user_struct *vuser = &validated_users[i]; - vuser->uid = -1; - vuser->gid = -1; - vuser->user_ngroups = 0; - if(vuser->user_groups && - (vuser->user_groups != (gid_t *)vuser->user_igroups)) - free(vuser->user_groups); - vuser->user_groups = NULL; - if(vuser->user_igroups) - free(vuser->user_igroups); - vuser->user_igroups = NULL; - } -} - + user_struct *usp; + int count=0; + + if (vuid == UID_FIELD_INVALID) + return NULL; + + for (usp=validated_users;usp;usp=usp->next,count++) { + if (vuid == usp->vuid) { + if (count > 10) { + DLIST_PROMOTE(validated_users, usp); + } + return usp; + } + } -/**************************************************************************** -return a validated username -****************************************************************************/ -char *validated_username(int vuid) -{ - return(validated_users[vuid].name); + return NULL; } /**************************************************************************** -register a uid/name pair as being valid and that a valid password -has been given. +invalidate a uid ****************************************************************************/ -void register_uid(int uid,int gid, char *name,BOOL guest) +void invalidate_vuid(uint16 vuid) { - user_struct *vuser; - - if (valid_uid(uid) >= 0) - return; - validated_users = (user_struct *)Realloc(validated_users, - sizeof(user_struct)* - (num_validated_users+1)); + user_struct *vuser = get_valid_user_struct(vuid); - if (!validated_users) - { - DEBUG(0,("Failed to realloc users struct!\n")); - return; - } + if (vuser == NULL) + return; - vuser = &validated_users[num_validated_users]; - vuser->uid = uid; - vuser->gid = gid; - vuser->guest = guest; - strcpy(vuser->name,name); + SAFE_FREE(vuser->homedir); - vuser->user_ngroups = 0; - vuser->user_groups = NULL; - vuser->user_igroups = NULL; + session_yield(vuser); - /* Find all the groups this uid is in and store them. - Used by become_user() */ - setup_groups(name,uid,gid, - &vuser->user_ngroups, - &vuser->user_igroups, - &vuser->user_groups); + DLIST_REMOVE(validated_users, vuser); - DEBUG(3,("uid %d registered to name %s\n",uid,name)); - - num_validated_users++; + SAFE_FREE(vuser->groups); + delete_nt_token(&vuser->nt_user_token); + SAFE_FREE(vuser); + num_validated_vuids--; } - /**************************************************************************** -add a name to the session users list +invalidate all vuid entries for this process ****************************************************************************/ -void add_session_user(char *user) +void invalidate_all_vuids(void) { - fstring suser; - StrnCpy(suser,user,sizeof(suser)-1); - - if (!Get_Pwnam(suser,True)) return; + user_struct *usp, *next=NULL; - 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 - { - strcat(session_users," "); - strcat(session_users,suser); + for (usp=validated_users;usp;usp=next) { + next = usp->next; + + invalidate_vuid(usp->vuid); } - } } - -#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 +return a validated username ****************************************************************************/ -static char *osf1_bigcrypt(char *password,char *salt1) +char *validated_username(uint16 vuid) { - 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); + user_struct *vuser = get_valid_user_struct(vuid); + if (vuser == NULL) + return 0; + return(vuser->user.unix_name); } -#endif - /**************************************************************************** -update the enhanced security database. Only relevant for OSF1 at the moment. +return a validated domain ****************************************************************************/ -static void update_protected_database( char *user, BOOL result) -{ -#ifdef OSF1_ENH_SEC - struct pr_passwd *mypasswd; - time_t starttime; - long tz; - - mypasswd = getprpwnam (user); - starttime = time (NULL); - tz = mktime ( localtime ( &starttime ) ); - - if (result) - { - mypasswd->ufld.fd_slogin = tz; - 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 = tz; - 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 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) +char *validated_domain(uint16 vuid) { - 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! - */ - - if (!strcmp((char *)crypt(password,this_salt),this_crypted) || - dcelogin_atmost_once) - return(False); - - 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); + user_struct *vuser = get_valid_user_struct(vuid); + if (vuser == NULL) + return 0; + return(vuser->user.domain); } -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 LINUX_BIGCRYPT /**************************************************************************** -an enhanced crypt for Linux to handle password longer than 8 characters + Create the SID list for this user. ****************************************************************************/ -static int linux_bigcrypt(char *password,char *salt1, char *crypted) + +NT_USER_TOKEN *create_nt_token(uid_t uid, gid_t gid, int ngroups, gid_t *groups, BOOL is_guest, NT_USER_TOKEN *sup_tok) { -#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 + extern DOM_SID global_sid_World; + extern DOM_SID global_sid_Network; + extern DOM_SID global_sid_Builtin_Guests; + extern DOM_SID global_sid_Authenticated_Users; + NT_USER_TOKEN *token; + DOM_SID *psids; + int i, psid_ndx = 0; + size_t num_sids = 0; + fstring sid_str; + + if ((token = (NT_USER_TOKEN *)malloc( sizeof(NT_USER_TOKEN) ) ) == NULL) + return NULL; + + ZERO_STRUCTP(token); + + /* We always have uid/gid plus World and Network and Authenticated Users or Guest SIDs. */ + num_sids = 5 + ngroups; + + if (sup_tok && sup_tok->num_sids) + num_sids += sup_tok->num_sids; + + if ((token->user_sids = (DOM_SID *)malloc( num_sids*sizeof(DOM_SID))) == NULL) { + SAFE_FREE(token); + return NULL; + } + psids = token->user_sids; -/**************************************************************************** -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)(),int N) -{ - int len = strlen(s); - int i; + /* + * Note - user SID *MUST* be first in token ! + * se_access_check depends on this. + */ -#ifdef PASSWORD_LENGTH - len = MIN(len,PASSWORD_LENGTH); -#endif + uid_to_sid( &psids[PRIMARY_USER_SID_INDEX], uid); + psid_ndx++; - 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); -} + /* + * Primary group SID is second in token. Convention. + */ -/**************************************************************************** -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)(),int N) -{ - int n; - for (n=1;n<=N;n++) - if (string_combinations2(s,0,fn,n)) return(True); - return(False); -} + gid_to_sid( &psids[PRIMARY_GROUP_SID_INDEX], gid); + psid_ndx++; + /* Now add the group SIDs. */ + for (i = 0; i < ngroups; i++) { + if (groups[i] != gid) { + gid_to_sid( &psids[psid_ndx++], groups[i]); + } + } -/**************************************************************************** -core of password checking routine -****************************************************************************/ -BOOL password_check(char *password) -{ -#ifdef AFS_AUTH - if (afs_auth(this_user,password)) return(True); -#endif + if (sup_tok) { + /* Now add the additional SIDs from the supplimentary token. */ + for (i = 0; i < sup_tok->num_sids; i++) + sid_copy( &psids[psid_ndx++], &sup_tok->user_sids[i] ); + } -#ifdef DFS_AUTH - if (dfs_auth(this_user,password)) return(True); -#endif + /* + * Finally add the "standard" SIDs. + * The only difference between guest and "anonymous" (which we + * don't really support) is the addition of Authenticated_Users. + */ -#ifdef PWDAUTH - if (pwdauth(this_user,password) == 0) - return(True); -#endif + sid_copy( &psids[psid_ndx++], &global_sid_World); + sid_copy( &psids[psid_ndx++], &global_sid_Network); -#ifdef OSF1_ENH_SEC - return(strcmp(osf1_bigcrypt(password,this_salt),this_crypted) == 0); -#endif + if (is_guest) + sid_copy( &psids[psid_ndx++], &global_sid_Builtin_Guests); + else + sid_copy( &psids[psid_ndx++], &global_sid_Authenticated_Users); -#ifdef ULTRIX_AUTH - return (strcmp((char *)crypt16(password, this_salt ),this_crypted) == 0); -#endif + token->num_sids = psid_ndx; -#ifdef LINUX_BIGCRYPT - return(linux_bigcrypt(password,this_salt,this_crypted)); -#endif + /* Dump list of sids in token */ -#ifdef NO_CRYPT - DEBUG(1,("Warning - no crypt available\n")); - return(False); -#else - return(strcmp((char *)crypt(password,this_salt),this_crypted) == 0); -#endif -} + for (i = 0; i < token->num_sids; i++) { + DEBUG(5, ("user token sid %s\n", + sid_to_string(sid_str, &token->user_sids[i]))); + } -#ifdef SMB_PASSWD -/**************************************************************************** -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); + return token; } -#endif /**************************************************************************** -check if a username/password is OK +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. ****************************************************************************/ -BOOL password_ok(char *user,char *password, int pwlen, struct passwd *pwd, BOOL is_nt_password) -{ - pstring pass2; - int level = lp_passwordlevel(); - struct passwd *pass; -#ifdef SMB_PASSWD - char challenge[8]; - struct smb_passwd *smb_pass; - BOOL challenge_done = False; -#endif - - if (password) password[pwlen] = 0; -#ifdef SMB_PASSWD - if (pwlen == 24) - challenge_done = last_challenge(challenge); -#endif - -#if DEBUG_PASSWORD -#ifdef SMB_PASSWD - if (challenge_done) - { - int i; - DEBUG(100,("checking user=[%s] pass=[",user)); - for( i = 0; i < 24; i++) - DEBUG(100,("%0x ", (unsigned char)password[i])); - DEBUG(100,("]\n")); - } - else -#endif - DEBUG(100,("checking user=[%s] pass=[%s]\n",user,password)); -#endif - - if (!password) - return(False); - - if (((!*password) || (!pwlen)) && !lp_null_passwords()) - return(False); +int register_vuid(auth_serversupplied_info *server_info, char *smb_name) +{ + user_struct *vuser = NULL; + uid_t uid; + gid_t gid; - if (pwd && !user) - { - pass = (struct passwd *) pwd; - user = pass->pw_name; - } - else - pass = Get_Pwnam(user,True); + /* Ensure no vuid gets registered in share level security. */ + if(lp_security() == SEC_SHARE) + return UID_FIELD_INVALID; -#ifdef SMB_PASSWD + /* Limit allowed vuids to 16bits - VUID_OFFSET. */ + if (num_validated_vuids >= 0xFFFF-VUID_OFFSET) + return UID_FIELD_INVALID; - DEBUG(4,("SMB Password - pwlen = %d, challenge_done = %d\n", pwlen, challenge_done)); + if((vuser = (user_struct *)malloc( sizeof(user_struct) )) == NULL) { + DEBUG(0,("Failed to malloc users struct!\n")); + return UID_FIELD_INVALID; + } - if((pwlen == 24) && challenge_done) - { - DEBUG(4,("Checking SMB password for user %s (l=24)\n",user)); + ZERO_STRUCTP(vuser); - if (!pass) - { - DEBUG(3,("Couldn't find user %s\n",user)); - return(False); + if (!IS_SAM_UNIX_USER(server_info->sam_account)) { + DEBUG(0,("Attempted session setup with invalid user. No uid/gid in SAM_ACCOUNT (flags:%x)\n", pdb_get_init_flag(server_info->sam_account))); + free(vuser); + return UID_FIELD_INVALID; } - smb_pass = get_smbpwnam(user); - if(!smb_pass) - { - DEBUG(3,("Couldn't find user %s in smb_passwd file.\n", user)); - return(False); - } + uid = pdb_get_uid(server_info->sam_account); + gid = pdb_get_gid(server_info->sam_account); - /* 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); + /* Allocate a free vuid. Yes this is a linear search... :-) */ + while( get_valid_user_struct(next_vuid) != NULL ) { + next_vuid++; + /* Check for vuid wrap. */ + if (next_vuid == UID_FIELD_INVALID) + next_vuid = VUID_OFFSET; } - if(Protocol >= PROTOCOL_NT1 && is_nt_password) - { - /* 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, challenge)) - { - update_protected_database(user,True); - return(True); - } - DEBUG(4,("NT MD4 password check failed\n")); - return (False); - } - } + DEBUG(10,("register_vuid: allocated vuid = %u\n", (unsigned int)next_vuid )); - /* Try against the lanman password */ + vuser->vuid = next_vuid; + vuser->uid = uid; + vuser->gid = gid; + vuser->guest = server_info->guest; + fstrcpy(vuser->user.unix_name, pdb_get_username(server_info->sam_account)); + fstrcpy(vuser->user.smb_name, smb_name); + fstrcpy(vuser->user.domain, pdb_get_domain(server_info->sam_account)); + fstrcpy(vuser->user.full_name, pdb_get_fullname(server_info->sam_account)); - if(smb_password_check(password, smb_pass->smb_passwd, challenge)) { - update_protected_database(user,True); - return(True); + /* Keep the homedir handy */ + const char *homedir = pdb_get_homedir(server_info->sam_account); + if (homedir) { + vuser->homedir = smb_xstrdup(homedir); + } } - DEBUG(3,("Error smb_password_check failed\n")); - } -#endif - - 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; + memcpy(vuser->session_key, server_info->session_key, sizeof(vuser->session_key)); - /* 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 */ + DEBUG(10,("register_vuid: (%u,%u) %s %s %s guest=%d\n", + (unsigned int)vuser->uid, + (unsigned int)vuser->gid, + vuser->user.unix_name, vuser->user.smb_name, vuser->user.domain, vuser->guest )); - spass = getspnam(pass->pw_name); - if (spass && spass->sp_pwdp) - pass->pw_passwd = spass->sp_pwdp; - } -#endif + DEBUG(3, ("User name: %s\tReal name: %s\n",vuser->user.unix_name,vuser->user.full_name)); -#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 + vuser->n_groups = 0; + vuser->groups = NULL; -#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 + /* Find all the groups this uid is in and store them. + Used by change_to_user() */ + initialise_groups(vuser->user.unix_name, vuser->uid, vuser->gid); + get_current_groups( &vuser->n_groups, &vuser->groups); -#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 + if (server_info->ptok) + add_supplementary_nt_login_groups(&vuser->n_groups, &vuser->groups, &server_info->ptok); -#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); - 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); - } - - /* give up? */ - if(level < 1) - { - update_protected_database(user,False); + /* Create an NT_USER_TOKEN struct for this user. */ + vuser->nt_user_token = create_nt_token(vuser->uid, vuser->gid, vuser->n_groups, vuser->groups, vuser->guest, server_info->ptok); - /* restore it */ - strcpy(password,pass2); + DEBUG(3,("uid %d registered to name %s\n",(int)vuser->uid,vuser->user.unix_name)); - return(False); - } + next_vuid++; + num_validated_vuids++; - /* last chance - all combinations of up to level chars upper! */ - strlower(password); + DLIST_ADD(validated_users, vuser); - if (string_combinations(password,password_check,level)) - { - update_protected_database(user,True); - return(True); - } + if (!session_claim(vuser)) { + DEBUG(1,("Failed to claim session for vuid=%d\n", vuser->vuid)); + invalidate_vuid(vuser->vuid); + return -1; + } - update_protected_database(user,False); - - /* restore it */ - strcpy(password,pass2); - - return(False); + /* Register a home dir service for this user */ + if ((!vuser->guest) && vuser->homedir && *(vuser->homedir) + && (lp_servicenumber(vuser->user.unix_name) < 0)) { + add_home_service(vuser->user.unix_name, vuser->homedir); + } + + return vuser->vuid; } - /**************************************************************************** -check if a username is valid +add a name to the session users list ****************************************************************************/ -BOOL user_ok(char *user,int snum) +void add_session_user(char *user) { - 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); -} - - + fstring suser; + StrnCpy(suser,user,sizeof(suser)-1); + if (!Get_Pwnam_Modify(suser)) return; -/**************************************************************************** -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,False)) { - 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; - strcpy(name,*member); - if (user_ok(name,snum) && - password_ok(name,password,pwlen,NULL,False)) - return(&name[0]); - member++; - } -#ifdef GROUP_CHECK_PWENT + 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 { - 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,False)) { - strcpy(tm, pwd->pw_name); - endpwent (); - return tm; - } - } - } - endpwent (); + pstrcat(session_users," "); + pstrcat(session_users,suser); } -#endif /* GROUP_CHECK_PWENT */ - } - } -#endif - return(NULL); + } } - /**************************************************************************** -check for authority to login to a service with a given username/password +check if a username is valid ****************************************************************************/ -BOOL authorise_login(int snum,char *user,char *password, int pwlen, - BOOL *guest,BOOL *force,int vuid) +BOOL user_ok(char *user,int snum) { - BOOL ok = False; - - *guest = False; - -#if DEBUG_PASSWORD - DEBUG(100,("checking authorisation on user=%s pass=%s\n",user,password)); -#endif - - /* there are several possabilities: - 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 + char **valid, **invalid; + BOOL ret; - if the service is guest_only then steps 1 to 5 are skipped - */ + valid = invalid = NULL; + ret = True; - if (GUEST_ONLY(snum)) *force = True; - - if (!(GUEST_ONLY(snum) && GUEST_OK(snum))) - { - - /* check the given username and password */ - if (!ok && (*user) && user_ok(user,snum)) { - ok = password_ok(user,password, pwlen, NULL, False); - if (ok) DEBUG(3,("ACCEPTED: given username password ok\n")); - } - - /* check for a previously registered guest username */ - if (!ok && (vuid >= 0) && validated_users[vuid].guest) { - if (user_ok(validated_users[vuid].name,snum) && - password_ok(validated_users[vuid].name, password, pwlen, NULL, False)) { - strcpy(user, validated_users[vuid].name); - validated_users[vuid].guest = False; - DEBUG(3,("ACCEPTED: given password with registered user %s\n", user)); - ok = True; + if (lp_invalid_users(snum)) { + lp_list_copy(&invalid, lp_invalid_users(snum)); + if (invalid && lp_list_substitute(invalid, "%S", lp_servicename(snum))) { + ret = !user_in_list(user, invalid); + } } - } - + if (invalid) lp_list_free (&invalid); - /* 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; - strcpy(user2,auser); - if (!user_ok(user2,snum)) continue; - - if (password_ok(user2,password, pwlen, NULL, False)) { - ok = True; - strcpy(user,user2); - DEBUG(3,("ACCEPTED: session list username and given password ok\n")); - } - } - free(user_list); + if (ret && lp_valid_users(snum)) { + lp_list_copy(&valid, lp_valid_users(snum)); + if (valid && lp_list_substitute(valid, "%S", lp_servicename(snum))) { + ret = user_in_list(user,valid); + } } + if (valid) lp_list_free (&valid); - /* check for a previously validated username/password pair */ - if (!ok && !lp_revalidate(snum) && - (vuid >= 0) && !validated_users[vuid].guest && - user_ok(validated_users[vuid].name,snum)) { - strcpy(user,validated_users[vuid].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; - strcpy(user,auser); - DEBUG(3,("ACCEPTED: group username and given password ok\n")); - } - } - else - { - fstring user2; - strcpy(user2,auser); - if (user_ok(user2,snum) && - password_ok(user2,password,pwlen,NULL, False)) - { - ok = True; - strcpy(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)) - { - strcpy(user,guestname); - ok = True; - DEBUG(3,("ACCEPTED: guest account and guest ok\n")); + if (ret && lp_onlyuser(snum)) { + char **user_list = lp_list_make (lp_username(snum)); + if (user_list && lp_list_substitute(user_list, "%S", lp_servicename(snum))) { + ret = user_in_list(user, user_list); + } + if (user_list) lp_list_free (&user_list); } - 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); + return(ret); } - /**************************************************************************** -read the a hosts.equiv or .rhosts file and check if it -allows this user from this machine +validate a group username entry. Return the username or NULL ****************************************************************************/ -static BOOL check_user_equiv(char *user, char *remote, char *equiv_file) +static char *validate_group(char *group, DATA_BLOB password,int snum) { - 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] == '+') +#ifdef HAVE_NETGROUP { - 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++; + char *host, *user, *domain; + setnetgrent(group); + while (getnetgrent(&host, &user, &domain)) { + if (user) { + if (user_ok(user, snum) && + password_ok(user,password)) { + endnetgrent(); + return(user); + } + } + } + endnetgrent(); } - file_host = strtok(bp, " \t\n"); - file_user = strtok(NULL, " \t\n"); - DEBUG(7, ("check_user_equiv %s %s\n", file_host, file_user)); - if (file_host && *file_host) - { - BOOL host_ok = False; - -#ifdef NETGROUP - /* THIS IS UNTESTED!! */ - if (is_group) - { - static char *mydomain = NULL; - if (!mydomain) - yp_get_default_domain(&mydomain); - if (mydomain && innetgr(remote,file_host,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); - - extern struct from_host Client_info; - extern int Client; - - if (!pass) - return(False); - - fromhost(Client,&Client_info); - - 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_info.name,fname)) - return(True); - } - if (lp_use_rhosts()) - { - char *home = get_home_dir(user); - if (home) +#ifdef HAVE_GETGRENT { - sprintf(rhostsfile, "%s/.rhosts", home); - if (check_user_equiv(user,Client_info.name,rhostsfile)) - return(True); - } - } + struct group *gptr; + setgrent(); + while ((gptr = (struct group *)getgrent())) { + if (strequal(gptr->gr_name,group)) + break; + } - return(False); + /* + * As user_ok can recurse doing a getgrent(), we must + * copy the member list into a pstring on the stack before + * use. Bug pointed out by leon@eatworms.swmed.edu. + */ + + if (gptr) { + pstring member_list; + char *member; + size_t copied_len = 0; + int i; + + *member_list = '\0'; + member = member_list; + + for(i = 0; gptr->gr_mem && gptr->gr_mem[i]; i++) { + size_t member_len = strlen(gptr->gr_mem[i]) + 1; + if( copied_len + member_len < sizeof(pstring)) { + + DEBUG(10,("validate_group: = gr_mem = %s\n", gptr->gr_mem[i])); + + safe_strcpy(member, gptr->gr_mem[i], sizeof(pstring) - copied_len - 1); + copied_len += member_len; + member += copied_len; + } else { + *member = '\0'; + } + } + + endgrent(); + + member = member_list; + while (*member) { + static fstring name; + fstrcpy(name,member); + if (user_ok(name,snum) && + password_ok(name,password)) { + endgrent(); + return(&name[0]); + } + + DEBUG(10,("validate_group = member = %s\n", member)); + + member += strlen(member) + 1; + } + } else { + endgrent(); + return NULL; + } + } +#endif + return(NULL); } - -static int password_client = -1; -static fstring pserver; - /**************************************************************************** -attempted support for server level security + Check for authority to login to a service with a given username/password. + Note this is *NOT* used when logging on using sessionsetup_and_X. ****************************************************************************/ -BOOL server_cryptkey(char *buf) -{ - pstring inbuf,outbuf; - fstring pass_protocol; - extern fstring remote_machine; - char *p; - int len; - fstring desthost; - struct in_addr dest_ip; - extern struct in_addr myip; - int port = 139; - BOOL ret; - - if (password_client >= 0) - close(password_client); - password_client = -1; - - if (Protocol < PROTOCOL_NT1) { - strcpy(pass_protocol,"LM1.2X002"); - } else { - strcpy(pass_protocol,"NT LM 0.12"); - } - - bzero(inbuf,sizeof(inbuf)); - bzero(outbuf,sizeof(outbuf)); - - for (p=strtok(lp_passwordserver(),LIST_SEP); p ; p = strtok(NULL,LIST_SEP)) { - strcpy(desthost,p); - standard_sub_basic(desthost); - strupper(desthost); - - dest_ip = *interpret_addr2(desthost); - if (zero_ip(dest_ip)) { - DEBUG(1,("Can't resolve address for %s\n",p)); - continue; - } - if (memcmp(&dest_ip,&myip,sizeof(dest_ip)) == 0) { - DEBUG(1,("Password server loop - disabling password server %s\n",p)); - continue; - } - - password_client = open_socket_out(SOCK_STREAM, &dest_ip, port); - if (password_client >= 0) { - DEBUG(3,("connected to password server %s\n",p)); - StrnCpy(pserver,p,sizeof(pserver)-1); - break; - } - } - - if (password_client < 0) { - DEBUG(1,("password server not available\n")); - return(False); - } +BOOL authorise_login(int snum,char *user, DATA_BLOB password, + BOOL *guest,BOOL *force,uint16 vuid) +{ + BOOL ok = False; + user_struct *vuser = get_valid_user_struct(vuid); +#if DEBUG_PASSWORD + DEBUG(100,("authorise_login: checking authorisation on user=%s pass=%s vuid=%d\n", + user,password.data, vuid)); +#endif - /* send a session request (RFC 8002) */ + *guest = False; + + if (GUEST_ONLY(snum)) + *force = True; - /* put in the destination name */ - len = 4; - p = outbuf+len; - name_mangle(desthost,p,' '); - len += name_len(p); + if (!GUEST_ONLY(snum) && (lp_security() > SEC_SHARE)) { - /* and my name */ - p = outbuf+len; - name_mangle(remote_machine,p,' '); - len += name_len(p); + /* + * We should just use the given vuid from a sessionsetup_and_X. + */ - _smb_setlen(outbuf,len); - CVAL(outbuf,0) = 0x81; + if (!vuser) { + DEBUG(1,("authorise_login: refusing user '%s' with no session setup\n", user)); + return False; + } - send_smb(password_client,outbuf); - receive_smb(password_client,inbuf,5000); + if ((!vuser->guest && user_ok(vuser->user.unix_name,snum)) || + (vuser->guest && GUEST_OK(snum))) { + fstrcpy(user,vuser->user.unix_name); + *guest = vuser->guest; + DEBUG(3,("authorise_login: ACCEPTED: validated based on vuid as %sguest \ +(user=%s)\n", vuser->guest ? "" : "non-", user)); + return True; + } + } - if (CVAL(inbuf,0) != 0x82) { - DEBUG(1,("%s rejected the session\n",pserver)); - close(password_client); password_client = -1; - return(False); - } - - DEBUG(3,("got session\n")); - - bzero(outbuf,smb_size); - - /* setup the protocol string */ - set_message(outbuf,0,strlen(pass_protocol)+2,True); - p = smb_buf(outbuf); - *p++ = 2; - strcpy(p,pass_protocol); - - CVAL(outbuf,smb_com) = SMBnegprot; - CVAL(outbuf,smb_flg) = 0x8; - SSVAL(outbuf,smb_flg2,0x1); - - send_smb(password_client,outbuf); - ret = receive_smb(password_client,inbuf,5000); - - if (!ret || CVAL(inbuf,smb_rcls) || SVAL(inbuf,smb_vwv0)) { - DEBUG(1,("%s rejected the protocol\n",pserver)); - close(password_client); password_client= -1; - return(False); - } - - if (!(CVAL(inbuf,smb_vwv1) & 1)) { - DEBUG(1,("%s isn't in user level security mode\n",pserver)); - close(password_client); password_client= -1; - return(False); - } - - memcpy(buf,inbuf,smb_len(inbuf)+4); - - DEBUG(3,("password server OK\n")); - - return(True); -} - -/**************************************************************************** -attempted support for server level security -****************************************************************************/ -BOOL server_validate(char *buf) -{ - pstring inbuf,outbuf; - BOOL ret; - - if (password_client < 0) { - DEBUG(1,("%s not connected\n",pserver)); - return(False); - } - - bzero(inbuf,sizeof(inbuf)); - memcpy(outbuf,buf,sizeof(outbuf)); - - /* send a session setup command */ - CVAL(outbuf,smb_flg) = 0x8; - SSVAL(outbuf,smb_flg2,0x1); - CVAL(outbuf,smb_vwv0) = 0xFF; - - set_message(outbuf,smb_numwords(outbuf),smb_buflen(outbuf),False); - - SCVAL(inbuf,smb_rcls,1); + /* 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) && GUEST_OK(snum))) { + /* check for a previously registered guest username */ + if (!ok && (vuser != 0) && vuser->guest) { + if (user_ok(vuser->user.unix_name,snum) && + password_ok(vuser->user.unix_name, password)) { + fstrcpy(user, vuser->user.unix_name); + *guest = False; + DEBUG(3,("authorise_login: ACCEPTED: given password with registered user %s\n", user)); + ok = True; + } + } - send_smb(password_client,outbuf); - ret = receive_smb(password_client,inbuf,5000); + /* 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)) { + ok = True; + fstrcpy(user,user2); + DEBUG(3,("authorise_login: ACCEPTED: session list username (%s) \ +and given password ok\n", user)); + } + } + + SAFE_FREE(user_list); + } - if (!ret || CVAL(inbuf,smb_rcls) != 0) { - DEBUG(1,("password server %s rejected the password\n",pserver)); - return(False); - } + /* check for a previously validated username/password pair */ + if (!ok && (lp_security() > SEC_SHARE) && (vuser != 0) && !vuser->guest && + user_ok(vuser->user.unix_name,snum)) { + fstrcpy(user,vuser->user.unix_name); + *guest = False; + DEBUG(3,("authorise_login: ACCEPTED: validated uid (%s) as non-guest\n", + user)); + ok = True; + } - /* if logged in as guest then reject */ - if ((SVAL(inbuf,smb_vwv2) & 1) != 0) { - DEBUG(1,("password server %s gave us guest only\n",pserver)); - return(False); - } + /* 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)); - DEBUG(3,("password server %s accepted the password\n",pserver)); + pstring_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,snum); + if (auser) { + ok = True; + fstrcpy(user,auser); + DEBUG(3,("authorise_login: ACCEPTED: group username \ +and given password ok (%s)\n", user)); + } + } else { + fstring user2; + fstrcpy(user2,auser); + if (user_ok(user2,snum) && password_ok(user2,password)) { + ok = True; + fstrcpy(user,user2); + DEBUG(3,("authorise_login: ACCEPTED: user list username \ +and given password ok (%s)\n", user)); + } + } + } + } + } /* not guest only */ + + /* check for a normal guest connection */ + if (!ok && GUEST_OK(snum)) { + fstring guestname; + StrnCpy(guestname,lp_guestaccount(),sizeof(guestname)-1); + if (Get_Pwnam(guestname)) { + fstrcpy(user,guestname); + ok = True; + DEBUG(3,("authorise_login: ACCEPTED: guest account and guest ok (%s)\n", + user)); + } else { + DEBUG(0,("authorise_login: Invalid guest account %s??\n",guestname)); + } + *guest = True; + } -#ifndef KEEP_PASSWORD_SERVER_OPEN - close(password_client); password_client= -1; -#endif + if (ok && !user_ok(user,snum)) { + DEBUG(0,("authorise_login: rejected invalid user %s\n",user)); + ok = False; + } - return(True); + return(ok); } - - |