/* REXX Function Library for master.passwd management */

/* Currently implemented functions:                        */
/*   _MasterPasswdRead()                                   */
/*   _MasterPasswdWrite()                                  */
/*   _PasswordDBReWrite()                                  */

/*:VRX         _MasterpasswdRead
*/
_MasterpasswdRead: 
    IF options.!debug == 1 THEN say '_MasterpasswdRead() started'
    /* Read complete master.passwd */
    I = 0

    do until lines(samba.!masterpasswd) = 0
        userline = strip(linein(samba.!masterpasswd))
    
        /* Skip comments */
        if left(userline,1) = "#" then iterate
        if left(userline,1) = ";" then iterate  

        /* parse fields into stem variables */
        I = I + 1
	parse var userline username.I':'password.I':'uid.I':'gid.I':'LoginClass.I':'pwchange.I':'deact.I':'gecos.I':'home.I':'shell.I

        Status.I =""	
        do J = 1 to I - 1
            if translate(Username.J) = translate(Username.I) then do
                status.I = "DUPLICATE"
                leave
            end
        end
    end
    ok = stream(samba.!masterpasswd,'c','close')
    drop userline

    /* set "stem roots" properly */
    username.0  = I
    password.0  = I
    uid.0       = I
    gid.0       = I
    loginclass.0= I
    pwchange.0  = I
    deact.0     = I
    gecos.0     = I
    home.0      = I
    shell.0     = I

    /* also smbpasswd stems */
    lmhash. = ''
    nthash. = ''
    flags.  = ''
    lct.    = ''
    lmhash.0 = I
    nthash.0 = I 
    flags.0  = I 
    lct.0    = I 

    /* smbusermap stem */
    MapTo. = ''
    MapTo.0 = I

    /* our private stem */
    status.0 = I
    IF options.!debug == 1 THEN say '_MasterpasswdRead() done, read 'username.0' users'
return

/*:VRX         _MasterpasswdWrite
*/
_MasterpasswdWrite: 
    IF options.!debug == 1 THEN say "_MasterpasswdWrite() started"
    newmasterpasswd = TempDir'master.passwd'
    ok = SysFileDelete(newmasterpasswd)
    call lineout newmasterpasswd, '# Created by Samba GUI Tools 'date('E')' 'time(''))
    call lineout newmasterpasswd, '# syntax:'
    call lineout newmasterpasswd, '# username:passwd:UID:GID:login-class:chg pw x sec:deact x sec:GECOS:home:shell'
    do I = 1 to username.0
        select 
            when Status.I = "DUPLICATE" & settings.!FixErrors then iterate
            when Status.I = "UID MISMATCH" then do
                call lineout newmasterpasswd, username.I':'password.I':'word(uid.I,1)':'gid.I':'loginclass.I':'pwchange.I':'deact.I':'gecos.I':'home.I':'shell.I
            end
            when Status.I = "UNIX MISSING" & settings.!FixErrors then do
                call lineout newmasterpasswd, username.I':'password.I':'uid.I':'gid.I':'loginclass.I':'pwchange.I':'deact.I':'gecos.I':'home.I':'shell.I
            end
            otherwise call lineout newmasterpasswd, username.I':'password.I':'uid.I':'gid.I':'loginclass.I':'pwchange.I':'deact.I':'gecos.I':'home.I':'shell.I
        end
    end
    ok = stream(newmasterpasswd,'c','close')
    ok = VRCopyFile( samba.!masterpasswd, samba.!masterpasswd'.bak' )
    ok = VRCopyFile( newmasterpasswd, samba.!masterpasswd )
    ok = SysFileDelete(newmasterpasswd)
    IF options.!debug == 1 THEN say "_MasterpasswdWrite() done"
return

/*:VRX */
_PasswordDbRewrite: 
    IF options.!debug == 1 then say time()' _PasswordDBRewrite() started'

    /* Reset any old rc from pwd_mkdb.exe */
    pwd_mkdbrc = 0

    /* delete old .db.tmp files */
    ok = SysFileDelete(UnixETC'\pwd.db.tmp')
    ok = SysFileDelete(UnixETC'\spwd.db.tmp')

    /* create backups of old .db files */
    ok = VRCopyFile( UnixETC'\pwd.db',  UnixETC'\pwd.db.bak'  )
    ok = VRCopyFile( UnixETC'\spwd.db', UnixETC'\spwd.db.bak' )

    /* delete old .db files */
    ok = SysFileDelete(UnixETC'\pwd.db')
    ok = SysFileDelete(UnixETC'\spwd.db')

    /* Create new password db */
    address cmd samba.!pwd_mkdb' -d 'unixetc' 'samba.!masterpasswd' 2>'samba.!error
    pwd_mkdbrc = rc
    if \VRFileExists(samba.!pwddb) | pwd_mkdbrc <> 0 then do
        call _SambaShowError
    end
    IF options.!debug == 1 then say time()" _PasswordDBRewrite() done ("pwd_mkdbrc")"
return

_MasterPasswdFindUser: procedure expose username.
    IF options.!debug == 1 THEN say '_MasterpasswdFindUser("'arg(1)'") started'
    FindUser = arg(1)
    Idx = 0
    do I = 1 to username.0
        if translate(username.I) = translate(FindUser) then do
            Idx = I
            leave
        end
    end
    IF options.!debug == 1 THEN say '_MasterpasswdFindUser("'FindUser'") done, returning 'Idx
return idx