Example #1
0
void devredir_proc_cid_rmdir_or_file(IRP *irp, tui32 IoStatus)
{
    struct stream *s;
    int            bytes;

    if (IoStatus != NT_STATUS_SUCCESS)
    {
        FUSE_DATA *fuse_data = dev_redir_fuse_data_dequeue(irp);
        if (fuse_data)
        {
            xfuse_devredir_cb_rmdir_or_file(fuse_data->data_ptr, IoStatus);
            free(fuse_data);
        }
        devredir_irp_delete(irp);
        return;
    }

    xstream_new(s, 1024);

    irp->completion_type = CID_RMDIR_OR_FILE_RESP;
    devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
                                    irp->CompletionId,
                                    IRP_MJ_SET_INFORMATION, 0);

    xstream_wr_u32_le(s, FileDispositionInformation);
    xstream_wr_u32_le(s, 0); /* length is zero */
    xstream_seek(s, 24);     /* padding        */

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);
    xstream_free(s);

    return;
}
Example #2
0
int dev_redir_send_drive_close_request(tui16 Component, tui16 PacketId,
                                       tui32 DeviceId,
                                       tui32 FileId,
                                       tui32 CompletionId,
                                       tui32 MajorFunction,
                                       tui32 MinorFunc,
                                       int pad_len)
{
    struct stream *s;
    int            bytes;

    xstream_new(s, 1024);

    devredir_insert_DeviceIoRequest(s, DeviceId, FileId, CompletionId,
                                    MajorFunction, MinorFunc);

    if (pad_len)
        xstream_seek(s, pad_len);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
    log_debug("sent close request; expect CID_FILE_CLOSE");
    return 0;
}
Example #3
0
void dev_redir_send_server_core_cap_req()
{
    struct stream *s;
    int            bytes;

    xstream_new(s, 1024);

    /* setup header */
    xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
    xstream_wr_u16_le(s, PAKID_CORE_SERVER_CAPABILITY);

    xstream_wr_u16_le(s, 5);                /* num of caps we are sending     */
    xstream_wr_u16_le(s, 0x0000);           /* padding                        */

    /* setup general capability */
    xstream_wr_u16_le(s, CAP_GENERAL_TYPE); /* CapabilityType                 */
    xstream_wr_u16_le(s, 44);               /* CapabilityLength - len of this */
                                            /* CAPABILITY_SET in bytes, inc   */
                                            /* the header                     */
    xstream_wr_u32_le(s, 2);                /* Version                        */
    xstream_wr_u32_le(s, 2);                /* O.S type                       */
    xstream_wr_u32_le(s, 0);                /* O.S version                    */
    xstream_wr_u16_le(s, 1);                /* protocol major version         */
    xstream_wr_u16_le(s, g_client_rdp_version); /* protocol minor version     */
    xstream_wr_u32_le(s, 0xffff);           /* I/O code 1                     */
    xstream_wr_u32_le(s, 0);                /* I/O code 2                     */
    xstream_wr_u32_le(s, 7);                /* Extended PDU                   */
    xstream_wr_u32_le(s, 0);                /* extra flags 1                  */
    xstream_wr_u32_le(s, 0);                /* extra flags 2                  */
    xstream_wr_u32_le(s, 2);                /* special type device cap        */

    /* setup printer capability */
    xstream_wr_u16_le(s, CAP_PRINTER_TYPE);
    xstream_wr_u16_le(s, 8);
    xstream_wr_u32_le(s, 1);

    /* setup serial port capability */
    xstream_wr_u16_le(s, CAP_PORT_TYPE);
    xstream_wr_u16_le(s, 8);
    xstream_wr_u32_le(s, 1);

    /* setup file system capability */
    xstream_wr_u16_le(s, CAP_DRIVE_TYPE);   /* CapabilityType                 */
    xstream_wr_u16_le(s, 8);                /* CapabilityLength - len of this */
                                           /* CAPABILITY_SET in bytes, inc   */
                                           /* the header                     */
    xstream_wr_u32_le(s, 2);                /* Version                        */

    /* setup smart card capability */
    xstream_wr_u16_le(s, CAP_SMARTCARD_TYPE);
    xstream_wr_u16_le(s, 8);
    xstream_wr_u32_le(s, 1);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
}
Example #4
0
// LK_TODO Path needs to be Unicode
void dev_redir_send_drive_dir_request(IRP *irp, tui32 device_id,
                                      tui32 InitialQuery, char *Path)
{
    struct stream *s;
    int            bytes;
    char           upath[4096]; // LK_TODO need to malloc this
    int            path_len = 0;

    /* during Initial Query, Path cannot be NULL */
    if (InitialQuery)
    {
        if (Path == NULL)
        {
            return;
        }

        /* Path in unicode needs this much space */
        path_len = ((g_mbstowcs(NULL, Path, 0) * sizeof(twchar)) / 2) + 2;
        devredir_cvt_to_unicode(upath, Path);
    }

    xstream_new(s, 1024 + path_len);

    irp->completion_type = CID_DIRECTORY_CONTROL;
    devredir_insert_DeviceIoRequest(s,
                                    device_id,
                                    irp->FileId,
                                    irp->CompletionId,
                                    IRP_MJ_DIRECTORY_CONTROL,
                                    IRP_MN_QUERY_DIRECTORY);

#ifdef USE_SHORT_NAMES_IN_DIR_LISTING
    xstream_wr_u32_le(s, FileBothDirectoryInformation); /* FsInformationClass */
#else
    xstream_wr_u32_le(s, FileDirectoryInformation);  /* FsInformationClass */
#endif
    xstream_wr_u8(s, InitialQuery);                  /* InitialQuery       */

    if (!InitialQuery)
    {
        xstream_wr_u32_le(s, 0);                     /* PathLength         */
        xstream_seek(s, 23);
    }
    else
    {
        xstream_wr_u32_le(s, path_len);              /* PathLength         */
        xstream_seek(s, 23);                         /* Padding            */
        xstream_wr_string(s, upath, path_len);
    }

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
}
Example #5
0
int APP_CC
dev_redir_file_write(void *fusep, tui32 DeviceId, tui32 FileId,
                     const char *buf, int Length, tui64 Offset)
{
    struct stream *s;
    IRP           *irp;
    IRP           *new_irp;
    int            bytes;

    log_debug("DeviceId=%d FileId=%d Length=%d Offset=%lld",
              DeviceId, FileId, Length, Offset);

    xstream_new(s, 1024 + Length);

    if ((irp = devredir_irp_find_by_fileid(FileId)) == NULL)
    {
        log_error("no IRP found with FileId = %d", FileId);
        xfuse_devredir_cb_write_file(fusep, NULL, 0);
        xstream_free(s);
        return -1;
    }

    /* create a new IRP for this request */
    if ((new_irp = devredir_irp_clone(irp)) == NULL)
    {
        /* system out of memory */
        xfuse_devredir_cb_write_file(fusep, NULL, 0);
        xstream_free(s);
        return -1;
    }
    new_irp->FileId = 0;
    new_irp->completion_type = CID_WRITE;
    new_irp->CompletionId = g_completion_id++;
    devredir_fuse_data_enqueue(new_irp, fusep);

    devredir_insert_DeviceIoRequest(s,
                                    DeviceId,
                                    FileId,
                                    new_irp->CompletionId,
                                    IRP_MJ_WRITE,
                                    0);

    xstream_wr_u32_le(s, Length);
    xstream_wr_u64_le(s, Offset);
    xstream_seek(s, 20); /* padding */

    /* now insert real data */
    xstream_copyin(s, buf, Length);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);
    xstream_free(s);

    return 0;
}
Example #6
0
void APP_CC
devredir_proc_cid_rename_file(IRP *irp, tui32 IoStatus)
{
    struct stream *s;
    int            bytes;
    int            sblen; /* SetBuffer length */
    int            flen;  /* FileNameLength   */


    if (IoStatus != NT_STATUS_SUCCESS)
    {
        log_debug("rename returned with IoStatus=0x%x", IoStatus);

        FUSE_DATA *fuse_data = devredir_fuse_data_dequeue(irp);
        if (fuse_data)
        {
            xfuse_devredir_cb_rename_file(fuse_data->data_ptr, IoStatus);
            free(fuse_data);
        }
        devredir_irp_delete(irp);
        return;
    }

    /* Path in unicode needs this much space */
    flen = ((g_mbstowcs(NULL, irp->gen_buf, 0) * sizeof(twchar)) / 2) + 2;
    sblen = 6 + flen;

    xstream_new(s, 1024 + flen);

    irp->completion_type = CID_RENAME_FILE_RESP;
    devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
                                    irp->CompletionId,
                                    IRP_MJ_SET_INFORMATION, 0);

    xstream_wr_u32_le(s, FileRenameInformation);
    xstream_wr_u32_le(s, sblen);     /* number of bytes after padding */
    xstream_seek(s, 24);             /* padding                       */
    xstream_wr_u8(s, 1);             /* ReplaceIfExists               */
    xstream_wr_u8(s, 0);             /* RootDirectory                 */
    xstream_wr_u32_le(s, flen);      /* FileNameLength                */

    /* filename in unicode */
    devredir_cvt_to_unicode(s->p, irp->gen_buf); /* UNICODE_TODO */
    xstream_seek(s, flen);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);
    xstream_free(s);

    return;
}
Example #7
0
int APP_CC
devredir_file_read(void *fusep, tui32 DeviceId, tui32 FileId,
                   tui32 Length, tui64 Offset)
{
    struct stream *s;
    IRP           *irp;
    IRP           *new_irp;
    int            bytes;

    xstream_new(s, 1024);

    if ((irp = devredir_irp_find_by_fileid(FileId)) == NULL)
    {
        log_error("no IRP found with FileId = %d", FileId);
        xfuse_devredir_cb_read_file(fusep, NULL, 0);
        xstream_free(s);
        return -1;
    }

    /* create a new IRP for this request */
    if ((new_irp = devredir_irp_clone(irp)) == NULL)
    {
        /* system out of memory */
        xfuse_devredir_cb_read_file(fusep, NULL, 0);
        xstream_free(s);
        return -1;
    }
    new_irp->FileId = 0;
    new_irp->completion_type = CID_READ;
    new_irp->CompletionId = g_completion_id++;
    devredir_fuse_data_enqueue(new_irp, fusep);

    devredir_insert_DeviceIoRequest(s,
                                    DeviceId,
                                    FileId,
                                    new_irp->CompletionId,
                                    IRP_MJ_READ,
                                    0);

    xstream_wr_u32_le(s, Length);
    xstream_wr_u64_le(s, Offset);
    xstream_seek(s, 20);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);
    xstream_free(s);

    return 0;
}
Example #8
0
static struct stream * APP_CC
scard_make_new_ioctl(IRP *irp, tui32 ioctl)
{
    /*
     * format of device control request
     *
     * DeviceIoRequest
     * u16       RDPDR_CTYP_CORE
     * u16       PAKID_CORE_DEVICE_IOREQUEST
     * u32       DeviceId
     * u32       FileId
     * u32       CompletionId
     * u32       MajorFunction
     * u32       MinorFunction
     *
     * u32       OutputBufferLength SHOULD be 2048
     * u32       InputBufferLength
     * u32       IoControlCode
     * 20 bytes  padding
     * xx bytes  InputBuffer (variable)
     */

    struct stream *s;

    xstream_new(s, 1024 * 3);
    if (s == NULL)
    {
        log_error("system out of memory");
        return s;
    }

    devredir_insert_DeviceIoRequest(s,
                                    irp->DeviceId,
                                    irp->FileId,
                                    irp->CompletionId,
                                    IRP_MJ_DEVICE_CONTROL,
                                    0);

    xstream_wr_u32_le(s, 2048);        /* OutputBufferLength               */
    xstream_wr_u32_le(s, 0);           /* InputBufferLength - insert later */
    xstream_wr_u32_le(s, ioctl);       /* Ioctl Code                       */
    xstream_seek(s, 20);               /* padding                          */

    /* [MS-RPCE] 2.2.6.1 */
    xstream_wr_u32_le(s, 0x00081001);  /* len 8, LE, v1                    */
    xstream_wr_u32_le(s, 0xcccccccc);  /* filler                           */

    return s;
}
Example #9
0
void dev_redir_send_server_user_logged_on()
{
    struct stream *s;
    int            bytes;

    xstream_new(s, 1024);

    /* setup stream */
    xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
    xstream_wr_u16_le(s, PAKID_CORE_USER_LOGGEDON);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
}
Example #10
0
int APP_CC
dev_redir_init(void)
{
    struct  stream *s;
    int     bytes;
    int     fd;

    union _u
    {
        tui32 clientID;
        char buf[4];
    } u;

    /* get a random number that will act as a unique clientID */
    if ((fd = open("/dev/urandom", O_RDONLY)) != -1)
    {
        if (read(fd, u.buf, 4) != 4)
        {
        }
        close(fd);
    }
    else
    {
        /* /dev/urandom did not work - use address of struct s */
        tui64 u64 = (tui64) (tintptr) &s;
        u.clientID = (tui32) u64;
    }

    /* setup stream */
    xstream_new(s, 1024);

    /* initiate drive redirection protocol by sending Server Announce Req  */
    xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
    xstream_wr_u16_le(s, PAKID_CORE_SERVER_ANNOUNCE);
    xstream_wr_u16_le(s, 0x0001);  /* server major ver                      */
    xstream_wr_u16_le(s, 0x000C);  /* server minor ver  - pretend 2 b Win 7 */
    xstream_wr_u32_le(s, u.clientID); /* unique ClientID                    */

    /* send data to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
    return 0;
}
Example #11
0
int dev_redir_send_drive_create_request(tui32 device_id,
                                        const char *path,
                                        tui32 DesiredAccess,
                                        tui32 CreateOptions,
                                        tui32 CreateDisposition,
                                        tui32 completion_id)
{
    struct stream *s;
    int            bytes;
    int            len;

    log_debug("DesiredAccess=0x%x CreateDisposition=0x%x CreateOptions=0x%x",
              DesiredAccess, CreateDisposition, CreateOptions);

    /* path in unicode needs this much space */
    len = ((g_mbstowcs(NULL, path, 0) * sizeof(twchar)) / 2) + 2;

    xstream_new(s, 1024 + len);

    devredir_insert_DeviceIoRequest(s,
                                    device_id,
                                    0,
                                    completion_id,
                                    IRP_MJ_CREATE,
                                    0);

    xstream_wr_u32_le(s, DesiredAccess);     /* DesiredAccess              */
    xstream_wr_u32_le(s, 0);                 /* AllocationSize high unused */
    xstream_wr_u32_le(s, 0);                 /* AllocationSize low  unused */
    xstream_wr_u32_le(s, 0);                 /* FileAttributes             */
    xstream_wr_u32_le(s, 3);                 /* SharedAccess LK_TODO       */
    xstream_wr_u32_le(s, CreateDisposition); /* CreateDisposition          */
    xstream_wr_u32_le(s, CreateOptions);     /* CreateOptions              */
    xstream_wr_u32_le(s, len);               /* PathLength                 */
    devredir_cvt_to_unicode(s->p, path);     /* path in unicode            */
    xstream_seek(s, len);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
    return 0;
}
Example #12
0
int dnsrv_child_main(dns_io di)
{
     pool    p   = pool_new();
     xstream xs  = xstream_new(p, dnsrv_child_process_xstream_io, di);
     int     len;
     char    readbuf[1024];
     sigset_t sigs;


     sigemptyset(&sigs);
     sigaddset(&sigs, SIGHUP);
     sigprocmask(SIG_BLOCK, &sigs, NULL);

     log_debug(ZONE,"DNSRV CHILD: starting");

     /* Transmit stream header */
     write(di->out, "<stream>", 8);

     /* Loop forever, processing requests and feeding them to the xstream*/     
     while (1)
     {
       len = read(di->in, &readbuf, 1024);
       if (len <= 0)
       {
           log_debug(ZONE,"dnsrv: Read error on coprocess(%d): %d %s",getppid(),errno,strerror(errno));
           break;
       }

       log_debug(ZONE, "DNSRV CHILD: Read from buffer: %.*s",len,readbuf);

       if (xstream_eat(xs, readbuf, len) > XSTREAM_NODE)
       {
           log_debug(ZONE, "DNSRV CHILD: xstream died");
           break;
       }
     }

     /* child is out of loop... normal exit so parent will start us again */
     log_debug(ZONE, "DNSRV CHILD: out of loop.. exiting normal");
     pool_free(p);
     exit(0);
     return 0;
}
Example #13
0
void devredir_send_server_device_announce_resp(tui32 device_id)
{
    struct stream *s;
    int            bytes;

    xstream_new(s, 1024);

    /* setup stream */
    xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
    xstream_wr_u16_le(s, PAKID_CORE_DEVICE_REPLY);
    xstream_wr_u32_le(s, device_id);
    xstream_wr_u32_le(s, 0); /* ResultCode */

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
}
Example #14
0
void dev_redir_send_server_clientID_confirm()
{
    struct stream *s;
    int            bytes;

    xstream_new(s, 1024);

    /* setup stream */
    xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
    xstream_wr_u16_le(s, PAKID_CORE_CLIENTID_CONFIRM);
    xstream_wr_u16_le(s, 0x0001);
    xstream_wr_u16_le(s, g_client_rdp_version);
    xstream_wr_u32_le(s, g_clientID);

    /* send to client */
    bytes = xstream_len(s);
    send_channel_data(g_rdpdr_chan_id, s->data, bytes);

    xstream_free(s);
}
Example #15
0
Stream *stream_connect(char *host,int port,int nonblock,xstream_onNode cb){
Stream *s;
struct hostent *he;
int optval;
int r;
int fd;

	s=g_new0(Stream,1);
	fd=socket(PF_INET,SOCK_STREAM,0);
	if (!fd){
		error_exit(L_("socket: %s"),g_strerror(errno));
		g_free(s);
		return NULL;
	}
	s->ioch=g_io_channel_unix_new(fd);
	g_io_channel_set_encoding(s->ioch,NULL,NULL);
	g_io_channel_set_buffered(s->ioch,0);
	s->sa.sin_family=AF_INET;
	s->sa.sin_port=htons(port);
	he=gethostbyname(host);
	if (he == NULL){
		g_warning(N_("Unknown host: %s"),host);
		g_free(s);
		return NULL;
	}
	s->sa.sin_addr = *(struct in_addr *) he->h_addr;
	optval=1;
	r=setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,&optval,sizeof(optval));
	if (r<0){
		g_warning("setsockopt(fd,SOL_SOCKET,SO_REUSEADDR...): %s",g_strerror(errno));
		g_free(s);
		return NULL;
	}

	optval=1;
	r=setsockopt(fd,SOL_SOCKET,SO_KEEPALIVE,&optval,sizeof(optval));
	if (r<0){
		g_warning("setsockopt(fd,SOL_SOCKET,SO_KEEPALIVE...): %s",g_strerror(errno));
		g_free(s);
		return NULL;
	}

	if (nonblock)
		if (stream_set_nonblocking(s,1)){
			g_free(s);
			return NULL;
		}

	r=connect(fd, (struct sockaddr *) &s->sa, sizeof (s->sa));
	if (r<0 && nonblock && errno==EINPROGRESS){
		s->connecting=1;
	}
	else{
		if (r<0){
			error_exit(L_("connect: %s"),g_strerror(errno));
			g_free(s);
			return NULL;
		}
		s->connected=1;
	}
	s->dest=g_strdup(host); /* FIXME */
	s->err_watch=g_io_add_watch(s->ioch,G_IO_ERR|G_IO_HUP|G_IO_NVAL,stream_io_error,s);
	if (s->connecting)
		s->write_watch=g_io_add_watch(s->ioch,G_IO_OUT,stream_io_connect,s);
	else
		s->read_watch=g_io_add_watch(s->ioch,G_IO_IN,stream_io_read,s);
	s->xs=xstream_new(pool_new(),cb,s);
	if (s->connected) stream_write_hello(s);
	return s;
}
Example #16
0
void* dnsrv_process_io(void* threadarg)
{
     /* Get DNS IO info */
     dns_io di = (dns_io)threadarg;
     int  retcode       = 0;
     int  pid           = 0;
     int  readlen       = 0;
     char readbuf[1024];
     xstream  xs       = NULL;       
     sigset_t sigs;
     #ifdef __CYGWIN__
     dns_resend_list iternode = NULL;
     #endif


     sigemptyset(&sigs);
     sigaddset(&sigs, SIGHUP);
     sigprocmask(SIG_BLOCK, &sigs, NULL);

     /* Allocate an xstream for talking to the process */
     xs = xstream_new(di->mempool, dnsrv_process_xstream_io, di);

     /* Transmit root element to coprocess */
     pth_write(di->out, "<stream>", 8);

     /* Transmit resend entries to coprocess */
     #ifdef __CYGWIN__
     iternode = di->svclist;
     while (iternode != NULL) {
       if (iternode->service) {
         sprintf(readbuf, "<resend service=\"%s\">%s</resend>",
                 iternode->service, iternode->host);
       } else {
         sprintf(readbuf, "<resend>%s</resend>",
                 iternode->host);
       }
       pth_write(di->out, readbuf, strlen(readbuf));
       iternode = iternode->next;
     }
     #endif

     /* Loop forever */
     while (1)
     {
       /* Hostname lookup completed from coprocess */
       readlen = pth_read(di->in, readbuf, sizeof(readbuf));
       if (readlen <= 0)
       {
           log_debug(ZONE,"dnsrv: Read error on coprocess: %d %s",errno,strerror(errno));
           break;
       }

       if (xstream_eat(xs, readbuf, readlen) > XSTREAM_NODE)
           break;
     }

     /* If we reached this point, the coprocess probably is dead, so 
        process the SIG_CHLD */
     pid = pth_waitpid(di->pid, &retcode, 0);

     if(pid == -1)
     {
        log_debug(ZONE, "pth_waitpid returned -1: %s", strerror(errno));
     }
     else if(pid == 0)
     {
        log_debug(ZONE, "no child available to call waitpid on");
     }
     else
     {
        log_debug(ZONE, "pid %d, exit status: %d", pid, WEXITSTATUS(retcode));
     }

     /* Cleanup */
     close(di->in);
     close(di->out);
     di->out = 0;

     log_debug(ZONE,"child returned %d",WEXITSTATUS(retcode));

     if(WIFEXITED(retcode)) /* if the child exited normally */
     {
        log_debug(ZONE, "child being restarted...");
        /* Fork out resolver function/process */
        di->pid = dnsrv_fork_and_capture(dnsrv_child_main, di);

        /* Start IO thread */
        pth_spawn(PTH_ATTR_DEFAULT, dnsrv_process_io, (void*)di);
        return NULL;
     }

     log_debug(ZONE, "child dying...");
     return NULL;
}
Example #17
0
int APP_CC
dev_redir_data_in(struct stream *s, int chan_id, int chan_flags, int length,
                  int total_length)
{
    struct stream *ls;
    tui16          comp_type;
    tui16          pktID;
    tui16          minor_ver;
    int            rv = 0;

    /*
     * handle packet fragmentation
     */
    if ((chan_flags & 3) == 3)
    {
        /* all data contained in one packet */
        ls = s;
    }
    else
    {
        /* is this is the first packet? */
        if (chan_flags & 1)
            xstream_new(g_input_stream, total_length);

        xstream_copyin(g_input_stream, s->p, length);

        /* in last packet, chan_flags & 0x02 will be true */
        if ((chan_flags & 2) == 0)
            return 0;

        g_input_stream->p = g_input_stream->data;
        ls = g_input_stream;
    }

    /* read header from incoming data */
    xstream_rd_u16_le(ls, comp_type);
    xstream_rd_u16_le(ls, pktID);

    /* for now we only handle core type, not printers */
    if (comp_type != RDPDR_CTYP_CORE)
    {
        log_error("invalid component type in response; expected 0x%x got 0x%x",
                  RDPDR_CTYP_CORE, comp_type);

        rv = -1;
        goto done;
    }

    /* figure out what kind of response we have gotten */
    switch (pktID)
    {
        case PAKID_CORE_CLIENTID_CONFIRM:
            xstream_seek(ls, 2);  /* major version, we ignore it */
            xstream_rd_u16_le(ls, minor_ver);
            xstream_rd_u32_le(ls, g_clientID);

            g_client_rdp_version = minor_ver;

            switch (minor_ver)
            {
                case RDP_CLIENT_50:
                    break;

                case RDP_CLIENT_51:
                    break;

                case RDP_CLIENT_52:
                    break;

                case RDP_CLIENT_60_61:
                    break;
            }
            // LK_TODO dev_redir_send_server_clientID_confirm();
            break;

        case PAKID_CORE_CLIENT_NAME:
            /* client is telling us its computer name; do we even care? */

            /* let client know loggin was successful */
            dev_redir_send_server_user_logged_on();
            usleep(1000 * 100);

            /* let client know our capabilites */
            dev_redir_send_server_core_cap_req();

            /* send confirm clientID */
            dev_redir_send_server_clientID_confirm();
            break;

        case PAKID_CORE_CLIENT_CAPABILITY:
            dev_redir_proc_client_core_cap_resp(ls);
            break;

        case PAKID_CORE_DEVICELIST_ANNOUNCE:
            devredir_proc_client_devlist_announce_req(ls);
            break;

        case PAKID_CORE_DEVICE_IOCOMPLETION:
            dev_redir_proc_device_iocompletion(ls);
            break;

        default:
            log_error("got unknown response 0x%x", pktID);
            break;
    }

done:

    if (g_input_stream)
    {
        xstream_free(g_input_stream);
        g_input_stream = NULL;
    }

    return rv;
}