trunk/rdesktop/serial.c

#include <unistd.h>
#include <fcntl.h>
#include <termios.h>
#include <strings.h>
#include "rdesktop.h"

#define FILE_DEVICE_SERIAL_PORT         0x1b

#define SERIAL_SET_BAUD_RATE            1
#define SERIAL_SET_QUEUE_SIZE           2
#define SERIAL_SET_LINE_CONTROL         3
#define SERIAL_SET_BREAK_ON             4
#define SERIAL_SET_BREAK_OFF            5
#define SERIAL_IMMEDIATE_CHAR           6
#define SERIAL_SET_TIMEOUTS             7
#define SERIAL_GET_TIMEOUTS             8
#define SERIAL_SET_DTR                  9
#define SERIAL_CLR_DTR                  10
#define SERIAL_RESET_DEVICE             11
#define SERIAL_SET_RTS                  12
#define SERIAL_CLR_RTS                  13
#define SERIAL_SET_XOFF                 14
#define SERIAL_SET_XON                  15
#define SERIAL_GET_WAIT_MASK            16
#define SERIAL_SET_WAIT_MASK            17
#define SERIAL_WAIT_ON_MASK             18
#define SERIAL_PURGE                    19
#define SERIAL_GET_BAUD_RATE            20
#define SERIAL_GET_LINE_CONTROL         21
#define SERIAL_GET_CHARS                22
#define SERIAL_SET_CHARS                23
#define SERIAL_GET_HANDFLOW             24
#define SERIAL_SET_HANDFLOW             25
#define SERIAL_GET_MODEMSTATUS          26
#define SERIAL_GET_COMMSTATUS           27
#define SERIAL_XOFF_COUNTER             28
#define SERIAL_GET_PROPERTIES           29
#define SERIAL_GET_DTRRTS               30
#define SERIAL_LSRMST_INSERT            31
#define SERIAL_CONFIG_SIZE              32
#define SERIAL_GET_COMMCONFIG           33
#define SERIAL_SET_COMMCONFIG           34
#define SERIAL_GET_STATS                35
#define SERIAL_CLEAR_STATS              36
#define SERIAL_GET_MODEM_CONTROL        37
#define SERIAL_SET_MODEM_CONTROL        38
#define SERIAL_SET_FIFO_CONTROL         39

#define STOP_BITS_1                     0
#define STOP_BITS_2                     2

#define NO_PARITY                       0
#define ODD_PARITY                      1
#define EVEN_PARITY                     2

#define SERIAL_PURGE_TXABORT 0x00000001
#define SERIAL_PURGE_RXABORT 0x00000002
#define SERIAL_PURGE_TXCLEAR 0x00000004
#define SERIAL_PURGE_RXCLEAR 0x00000008

/* SERIAL_WAIT_ON_MASK */
#define SERIAL_EV_RXCHAR           0x0001       // Any Character received
#define SERIAL_EV_RXFLAG           0x0002       // Received certain character
#define SERIAL_EV_TXEMPTY          0x0004       // Transmitt Queue Empty
#define SERIAL_EV_CTS              0x0008       // CTS changed state
#define SERIAL_EV_DSR              0x0010       // DSR changed state
#define SERIAL_EV_RLSD             0x0020       // RLSD changed state
#define SERIAL_EV_BREAK            0x0040       // BREAK received
#define SERIAL_EV_ERR              0x0080       // Line status error occurred
#define SERIAL_EV_RING             0x0100       // Ring signal detected
#define SERIAL_EV_PERR             0x0200       // Printer error occured
#define SERIAL_EV_RX80FULL         0x0400       // Receive buffer is 80 percent full
#define SERIAL_EV_EVENT1           0x0800       // Provider specific event 1
#define SERIAL_EV_EVENT2           0x1000       // Provider specific event 2

#ifndef CRTSCTS
#define CRTSCTS 0
#endif


extern RDPDR_DEVICE g_rdpdr_device[];

static SERIAL_DEVICE *
get_serial_info(HANDLE handle)
{
        int index;

        for (index = 0; index < RDPDR_MAX_DEVICES; index++)
        {
                if (handle == g_rdpdr_device[index].handle)
                        return (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
        }
        return NULL;
}

static BOOL
get_termios(SERIAL_DEVICE * pser_inf, HANDLE serial_fd)
{
        speed_t speed;
        struct termios *ptermios;

        ptermios = pser_inf->ptermios;

        if (tcgetattr(serial_fd, ptermios) == -1)
                return False;

        speed = cfgetispeed(ptermios);
        switch (speed)
        {
#ifdef B75
                case B75:
                        pser_inf->baud_rate = 75;
                        break;
#endif
#ifdef B110
                case B110:
                        pser_inf->baud_rate = 110;
                        break;
#endif
#ifdef B134
                case B134:
                        pser_inf->baud_rate = 134;
                        break;
#endif
#ifdef B150
                case B150:
                        pser_inf->baud_rate = 150;
                        break;
#endif
#ifdef B300
                case B300:
                        pser_inf->baud_rate = 300;
                        break;
#endif
#ifdef B600
                case B600:
                        pser_inf->baud_rate = 600;
                        break;
#endif
#ifdef B1200
                case B1200:
                        pser_inf->baud_rate = 1200;
                        break;
#endif
#ifdef B1800
                case B1800:
                        pser_inf->baud_rate = 1800;
                        break;
#endif
#ifdef B2400
                case B2400:
                        pser_inf->baud_rate = 2400;
                        break;
#endif
#ifdef B4800
                case B4800:
                        pser_inf->baud_rate = 4800;
                        break;
#endif
#ifdef B9600
                case B9600:
                        pser_inf->baud_rate = 9600;
                        break;
#endif
#ifdef B19200
                case B19200:
                        pser_inf->baud_rate = 19200;
                        break;
#endif
#ifdef B38400
                case B38400:
                        pser_inf->baud_rate = 38400;
                        break;
#endif
#ifdef B57600
                case B57600:
                        pser_inf->baud_rate = 57600;
                        break;
#endif
#ifdef B115200
                case B115200:
                        pser_inf->baud_rate = 115200;
                        break;
#endif
                default:
                        pser_inf->baud_rate = 0;
                        break;
        }

        speed = cfgetospeed(ptermios);
        pser_inf->dtr = (speed == B0) ? 0 : 1;

        pser_inf->stop_bits = (ptermios->c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1;
        pser_inf->parity =
                (ptermios->
                 c_cflag & PARENB) ? ((ptermios->
                                       c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY;
        switch (ptermios->c_cflag & CSIZE)
        {
                case CS5:
                        pser_inf->word_length = 5;
                        break;
                case CS6:
                        pser_inf->word_length = 6;
                        break;
                case CS7:
                        pser_inf->word_length = 7;
                        break;
                default:
                        pser_inf->word_length = 8;
                        break;
        }

        pser_inf->rts = (ptermios->c_cflag & CRTSCTS) ? 1 : 0;

        return True;
}

static void
set_termios(SERIAL_DEVICE * pser_inf, HANDLE serial_fd)
{
        speed_t speed;

        struct termios *ptermios;

        ptermios = pser_inf->ptermios;


        switch (pser_inf->baud_rate)
        {
#ifdef B75
                case 75:
                        speed = B75;
                        break;
#endif
#ifdef B110
                case 110:
                        speed = B110;
                        break;
#endif
#ifdef B134
                case 134:
                        speed = B134;
                        break;
#endif
#ifdef B150
                case 150:
                        speed = B150;
                        break;
#endif
#ifdef B300
                case 300:
                        speed = B300;
                        break;
#endif
#ifdef B600
                case 600:
                        speed = B600;
                        break;
#endif
#ifdef B1200
                case 1200:
                        speed = B1200;
                        break;
#endif
#ifdef B1800
                case 1800:
                        speed = B1800;
                        break;
#endif
#ifdef B2400
                case 2400:
                        speed = B2400;
                        break;
#endif
#ifdef B4800
                case 4800:
                        speed = B4800;
                        break;
#endif
#ifdef B9600
                case 9600:
                        speed = B9600;
                        break;
#endif
#ifdef B19200
                case 19200:
                        speed = B19200;
                        break;
#endif
#ifdef B38400
                case 38400:
                        speed = B38400;
                        break;
#endif
#ifdef B57600
                case 57600:
                        speed = B57600;
                        break;
#endif
#ifdef B115200
                case 115200:
                        speed = B115200;
                        break;
#endif
                default:
                        speed = B0;
                        break;
        }

        /* on systems with separate ispeed and ospeed, we can remember the speed
           in ispeed while changing DTR with ospeed */
        cfsetispeed(pser_inf->ptermios, speed);
        cfsetospeed(pser_inf->ptermios, pser_inf->dtr ? speed : 0);

        ptermios->c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE | CRTSCTS);
        switch (pser_inf->stop_bits)
        {
                case STOP_BITS_2:
                        ptermios->c_cflag |= CSTOPB;
                        break;
        }

        switch (pser_inf->parity)
        {
                case EVEN_PARITY:
                        ptermios->c_cflag |= PARENB;
                        break;
                case ODD_PARITY:
                        ptermios->c_cflag |= PARENB | PARODD;
                        break;
        }

        switch (pser_inf->word_length)
        {
                case 5:
                        ptermios->c_cflag |= CS5;
                        break;
                case 6:
                        ptermios->c_cflag |= CS6;
                        break;
                case 7:
                        ptermios->c_cflag |= CS7;
                        break;
                default:
                        ptermios->c_cflag |= CS8;
                        break;
        }

        if (pser_inf->rts)
                ptermios->c_cflag |= CRTSCTS;

        tcsetattr(serial_fd, TCSANOW, ptermios);
}

/* Enumeration of devices from rdesktop.c        */
/* returns numer of units found and initialized. */
/* optarg looks like ':com1=/dev/ttyS0'           */
/* when it arrives to this function.              */
/* :com1=/dev/ttyS0,com2=/dev/ttyS1 */
int
serial_enum_devices(uint32 * id, char *optarg)
{
        SERIAL_DEVICE *pser_inf;

        char *pos = optarg;
        char *pos2;
        int count = 0;

        // skip the first colon
        optarg++;
        while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
        {
                // Init data structures for device
                pser_inf = (SERIAL_DEVICE *) xmalloc(sizeof(SERIAL_DEVICE));
                pser_inf->ptermios = (struct termios *) xmalloc(sizeof(struct termios));
                memset(pser_inf->ptermios, 0, sizeof(struct termios));
                pser_inf->pold_termios = (struct termios *) xmalloc(sizeof(struct termios));
                memset(pser_inf->pold_termios, 0, sizeof(struct termios));

                pos2 = next_arg(optarg, '=');
                strcpy(g_rdpdr_device[*id].name, optarg);

                toupper_str(g_rdpdr_device[*id].name);

                g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
                strcpy(g_rdpdr_device[*id].local_path, pos2);
                printf("SERIAL %s to %s\n", g_rdpdr_device[*id].name,
                       g_rdpdr_device[*id].local_path);
                // set device type
                g_rdpdr_device[*id].device_type = DEVICE_TYPE_SERIAL;
                g_rdpdr_device[*id].pdevice_data = (void *) pser_inf;
                count++;
                (*id)++;

                optarg = pos;
        }
        return count;
}

static NTSTATUS
serial_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
              uint32 flags_and_attributes, char *filename, HANDLE * handle)
{
        HANDLE serial_fd;
        SERIAL_DEVICE *pser_inf;
        struct termios *ptermios;

        pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[device_id].pdevice_data;
        ptermios = pser_inf->ptermios;
        serial_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR | O_NOCTTY | O_NONBLOCK);

        if (serial_fd == -1)
        {
                perror("open");
                return STATUS_ACCESS_DENIED;
        }

        if (!get_termios(pser_inf, serial_fd))
        {
                printf("INFO: SERIAL %s access denied\n", g_rdpdr_device[device_id].name);
                fflush(stdout);
                return STATUS_ACCESS_DENIED;
        }

        // Store handle for later use
        g_rdpdr_device[device_id].handle = serial_fd;

        /* some sane information */
        printf("INFO: SERIAL %s to %s\nINFO: speed %u baud, stop bits %u, parity %u, word length %u bits, dtr %u, rts %u\n", g_rdpdr_device[device_id].name, g_rdpdr_device[device_id].local_path, pser_inf->baud_rate, pser_inf->stop_bits, pser_inf->parity, pser_inf->word_length, pser_inf->dtr, pser_inf->rts);

        printf("INFO: use stty to change settings\n");

/*      ptermios->c_cflag = B115200 | CRTSCTS | CS8 | CLOCAL | CREAD;
        ptermios->c_cflag |= CREAD;
        ptermios->c_lflag |= ICANON;
        ptermios->c_iflag = IGNPAR | ICRNL;

        tcsetattr(serial_fd, TCSANOW, ptermios);
*/

        cfmakeraw(pser_inf->ptermios);
        *handle = serial_fd;

        /* all read and writes should be non blocking */
        if (fcntl(*handle, F_SETFL, O_NONBLOCK) == -1)
                perror("fcntl");

        return STATUS_SUCCESS;
}

static NTSTATUS
serial_close(HANDLE handle)
{
        int i = get_device_index(handle);
        if (i >= 0)
                g_rdpdr_device[i].handle = 0;
        close(handle);
        return STATUS_SUCCESS;
}

static NTSTATUS
serial_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        long timeout;
        SERIAL_DEVICE *pser_inf;
        struct termios *ptermios;

        timeout = 90;
        pser_inf = get_serial_info(handle);
        ptermios = pser_inf->ptermios;

        // Set timeouts kind of like the windows serial timeout parameters. Multiply timeout
        // with requested read size
        if (pser_inf->read_total_timeout_multiplier | pser_inf->read_total_timeout_constant)
        {
                timeout =
                        (pser_inf->read_total_timeout_multiplier * length +
                         pser_inf->read_total_timeout_constant + 99) / 100;
        }
        else if (pser_inf->read_interval_timeout)
        {
                timeout = (pser_inf->read_interval_timeout * length + 99) / 100;
        }

        // If a timeout is set, do a blocking read, which times out after some time.
        // It will make rdesktop less responsive, but it will improve serial performance, by not
        // reading one character at a time.
        if (timeout == 0)
        {
                ptermios->c_cc[VTIME] = 0;
                ptermios->c_cc[VMIN] = 0;
        }
        else
        {
                ptermios->c_cc[VTIME] = timeout;
                ptermios->c_cc[VMIN] = 1;
        }
        tcsetattr(handle, TCSANOW, ptermios);


        *result = read(handle, data, length);

        //hexdump(data, *read);

        return STATUS_SUCCESS;
}

static NTSTATUS
serial_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        *result = write(handle, data, length);
        return STATUS_SUCCESS;
}

static NTSTATUS
serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
{
#if 0
        int flush_mask, purge_mask;
#endif
        uint32 result;
        uint8 immediate;
        SERIAL_DEVICE *pser_inf;
        struct termios *ptermios;

        if ((request >> 16) != FILE_DEVICE_SERIAL_PORT)
                return STATUS_INVALID_PARAMETER;

        pser_inf = get_serial_info(handle);
        ptermios = pser_inf->ptermios;

        /* extract operation */
        request >>= 2;
        request &= 0xfff;

        printf("SERIAL IOCTL %d\n", request);

        switch (request)
        {
                case SERIAL_SET_BAUD_RATE:
                        in_uint32_le(in, pser_inf->baud_rate);
                        set_termios(pser_inf, handle);
                        break;
                case SERIAL_GET_BAUD_RATE:
                        out_uint32_le(out, pser_inf->baud_rate);
                        break;
                case SERIAL_SET_QUEUE_SIZE:
                        in_uint32_le(in, pser_inf->queue_in_size);
                        in_uint32_le(in, pser_inf->queue_out_size);
                        break;
                case SERIAL_SET_LINE_CONTROL:
                        in_uint8(in, pser_inf->stop_bits);
                        in_uint8(in, pser_inf->parity);
                        in_uint8(in, pser_inf->word_length);
                        set_termios(pser_inf, handle);
                        break;
                case SERIAL_GET_LINE_CONTROL:
                        out_uint8(out, pser_inf->stop_bits);
                        out_uint8(out, pser_inf->parity);
                        out_uint8(out, pser_inf->word_length);
                        break;
                case SERIAL_IMMEDIATE_CHAR:
                        in_uint8(in, immediate);
                        serial_write(handle, &immediate, 1, 0, &result);
                        break;
                case SERIAL_CONFIG_SIZE:
                        out_uint32_le(out, 0);
                        break;
                case SERIAL_GET_CHARS:
                        out_uint8s(out, 6);
                        break;
                case SERIAL_SET_CHARS:
                        in_uint8s(in, 6);
                        break;
                case SERIAL_GET_HANDFLOW:
                        out_uint32_le(out, 0);
                        out_uint32_le(out, 3);  /* Xon/Xoff */
                        out_uint32_le(out, 0);
                        out_uint32_le(out, 0);
                        break;
                case SERIAL_SET_HANDFLOW:
                        in_uint8s(in, 16);
                        break;
                case SERIAL_SET_TIMEOUTS:
                        in_uint8s(in, 20);
                        break;
                case SERIAL_GET_TIMEOUTS:
                        out_uint8s(out, 20);
                        break;
                case SERIAL_GET_WAIT_MASK:
                        out_uint32(out, pser_inf->wait_mask);
                        break;
                case SERIAL_SET_WAIT_MASK:
                        in_uint32(in, pser_inf->wait_mask);
                        break;
                case SERIAL_SET_DTR:
                        pser_inf->dtr = 1;
                        set_termios(pser_inf, handle);
                        break;
                case SERIAL_CLR_DTR:
                        pser_inf->dtr = 0;
                        set_termios(pser_inf, handle);
                        break;
                case SERIAL_SET_RTS:
                        pser_inf->rts = 1;
                        set_termios(pser_inf, handle);
                        break;
                case SERIAL_CLR_RTS:
                        pser_inf->rts = 0;
                        set_termios(pser_inf, handle);
                        break;
                case SERIAL_GET_MODEMSTATUS:
                        out_uint32_le(out, 0);  /* Errors */
                        break;
                case SERIAL_GET_COMMSTATUS:
                        out_uint32_le(out, 0);  /* Errors */
                        out_uint32_le(out, 0);  /* Hold reasons */
                        out_uint32_le(out, 0);  /* Amount in in queue */
                        out_uint32_le(out, 0);  /* Amount in out queue */
                        out_uint8(out, 0);      /* EofReceived */
                        out_uint8(out, 0);      /* WaitForImmediate */
                        break;
#if 0
                case SERIAL_PURGE:
                        printf("SERIAL_PURGE\n");
                        in_uint32(in, purge_mask);
                        if (purge_mask & 0x04)
                                flush_mask |= TCOFLUSH;
                        if (purge_mask & 0x08)
                                flush_mask |= TCIFLUSH;
                        if (flush_mask != 0)
                                tcflush(handle, flush_mask);
                        if (purge_mask & 0x01)
                                rdpdr_abort_io(handle, 4, STATUS_CANCELLED);
                        if (purge_mask & 0x02)
                                rdpdr_abort_io(handle, 3, STATUS_CANCELLED);
                        break;
                case SERIAL_WAIT_ON_MASK:
                        /* XXX implement me */
                        out_uint32_le(out, pser_inf->wait_mask);
                        break;
                case SERIAL_SET_BREAK_ON:
                        tcsendbreak(serial_fd, 0);
                        break;
                case SERIAL_RESET_DEVICE:
                case SERIAL_SET_BREAK_OFF:
                case SERIAL_SET_XOFF:
                case SERIAL_SET_XON:
                        /* ignore */
                        break;
#endif
                default:
                        unimpl("SERIAL IOCTL %d\n", request);
                        return STATUS_INVALID_PARAMETER;
        }

        return STATUS_SUCCESS;
}

/* Read timeout for a given file descripter (device) when adding fd's to select() */
BOOL
serial_get_timeout(HANDLE handle, uint32 length, uint32 * timeout, uint32 * itv_timeout)
{
        int index;
        SERIAL_DEVICE *pser_inf;

        index = get_device_index(handle);
        if (index < 0)
                return True;

        if (g_rdpdr_device[index].device_type != DEVICE_TYPE_SERIAL)
        {
                return False;
        }

        pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;

        *timeout =
                pser_inf->read_total_timeout_multiplier * length +
                pser_inf->read_total_timeout_constant;
        *itv_timeout = pser_inf->read_interval_timeout;
        return True;
}

DEVICE_FNS serial_fns = {
        serial_create,
        serial_close,
        serial_read,
        serial_write,
        serial_device_control
};
1	matthewc	432	#include <unistd.h>
2			#include <fcntl.h>
3			#include <termios.h>
4	stargo	570	#include <strings.h>
5	matthewc	432	#include "rdesktop.h"
6
7			#define FILE_DEVICE_SERIAL_PORT 0x1b
8
9			#define SERIAL_SET_BAUD_RATE 1
10			#define SERIAL_SET_QUEUE_SIZE 2
11			#define SERIAL_SET_LINE_CONTROL 3
12			#define SERIAL_SET_BREAK_ON 4
13			#define SERIAL_SET_BREAK_OFF 5
14			#define SERIAL_IMMEDIATE_CHAR 6
15			#define SERIAL_SET_TIMEOUTS 7
16			#define SERIAL_GET_TIMEOUTS 8
17			#define SERIAL_SET_DTR 9
18			#define SERIAL_CLR_DTR 10
19			#define SERIAL_RESET_DEVICE 11
20			#define SERIAL_SET_RTS 12
21			#define SERIAL_CLR_RTS 13
22			#define SERIAL_SET_XOFF 14
23			#define SERIAL_SET_XON 15
24			#define SERIAL_GET_WAIT_MASK 16
25			#define SERIAL_SET_WAIT_MASK 17
26			#define SERIAL_WAIT_ON_MASK 18
27			#define SERIAL_PURGE 19
28			#define SERIAL_GET_BAUD_RATE 20
29			#define SERIAL_GET_LINE_CONTROL 21
30			#define SERIAL_GET_CHARS 22
31			#define SERIAL_SET_CHARS 23
32			#define SERIAL_GET_HANDFLOW 24
33			#define SERIAL_SET_HANDFLOW 25
34			#define SERIAL_GET_MODEMSTATUS 26
35			#define SERIAL_GET_COMMSTATUS 27
36			#define SERIAL_XOFF_COUNTER 28
37			#define SERIAL_GET_PROPERTIES 29
38			#define SERIAL_GET_DTRRTS 30
39			#define SERIAL_LSRMST_INSERT 31
40			#define SERIAL_CONFIG_SIZE 32
41			#define SERIAL_GET_COMMCONFIG 33
42			#define SERIAL_SET_COMMCONFIG 34
43			#define SERIAL_GET_STATS 35
44			#define SERIAL_CLEAR_STATS 36
45			#define SERIAL_GET_MODEM_CONTROL 37
46			#define SERIAL_SET_MODEM_CONTROL 38
47			#define SERIAL_SET_FIFO_CONTROL 39
48
49			#define STOP_BITS_1 0
50			#define STOP_BITS_2 2
51
52			#define NO_PARITY 0
53			#define ODD_PARITY 1
54			#define EVEN_PARITY 2
55
56	n-ki	622	#define SERIAL_PURGE_TXABORT 0x00000001
57			#define SERIAL_PURGE_RXABORT 0x00000002
58			#define SERIAL_PURGE_TXCLEAR 0x00000004
59			#define SERIAL_PURGE_RXCLEAR 0x00000008
60
61			/* SERIAL_WAIT_ON_MASK */
62			#define SERIAL_EV_RXCHAR 0x0001 // Any Character received
63			#define SERIAL_EV_RXFLAG 0x0002 // Received certain character
64			#define SERIAL_EV_TXEMPTY 0x0004 // Transmitt Queue Empty
65			#define SERIAL_EV_CTS 0x0008 // CTS changed state
66			#define SERIAL_EV_DSR 0x0010 // DSR changed state
67			#define SERIAL_EV_RLSD 0x0020 // RLSD changed state
68			#define SERIAL_EV_BREAK 0x0040 // BREAK received
69			#define SERIAL_EV_ERR 0x0080 // Line status error occurred
70			#define SERIAL_EV_RING 0x0100 // Ring signal detected
71			#define SERIAL_EV_PERR 0x0200 // Printer error occured
72			#define SERIAL_EV_RX80FULL 0x0400 // Receive buffer is 80 percent full
73			#define SERIAL_EV_EVENT1 0x0800 // Provider specific event 1
74			#define SERIAL_EV_EVENT2 0x1000 // Provider specific event 2
75
76	stargo	686	#ifndef CRTSCTS
77			#define CRTSCTS 0
78			#endif
79	n-ki	622
80	stargo	686
81	astrand	580	extern RDPDR_DEVICE g_rdpdr_device[];
82	n-ki	569
83	astrand	665	static SERIAL_DEVICE *
84	n-ki	588	get_serial_info(HANDLE handle)
85	matthewc	432	{
86	astrand	580	int index;
87	matthewc	432
88	astrand	580	for (index = 0; index < RDPDR_MAX_DEVICES; index++)
89			{
90			if (handle == g_rdpdr_device[index].handle)
91			return (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
92			}
93			return NULL;
94	n-ki	569	}
95	matthewc	432
96	astrand	665	static BOOL
97	astrand	580	get_termios(SERIAL_DEVICE * pser_inf, HANDLE serial_fd)
98	n-ki	569	{
99	astrand	580	speed_t speed;
100			struct termios *ptermios;
101	n-ki	569
102	astrand	580	ptermios = pser_inf->ptermios;
103	n-ki	569
104	astrand	580	if (tcgetattr(serial_fd, ptermios) == -1)
105			return False;
106	n-ki	569
107	astrand	580	speed = cfgetispeed(ptermios);
108			switch (speed)
109			{
110	stargo	545	#ifdef B75
111	astrand	580	case B75:
112			pser_inf->baud_rate = 75;
113			break;
114	stargo	545	#endif
115			#ifdef B110
116	astrand	580	case B110:
117			pser_inf->baud_rate = 110;
118			break;
119	stargo	545	#endif
120			#ifdef B134
121	astrand	580	case B134:
122			pser_inf->baud_rate = 134;
123			break;
124	stargo	545	#endif
125			#ifdef B150
126	astrand	580	case B150:
127			pser_inf->baud_rate = 150;
128			break;
129	stargo	545	#endif
130			#ifdef B300
131	astrand	580	case B300:
132			pser_inf->baud_rate = 300;
133			break;
134	stargo	545	#endif
135			#ifdef B600
136	astrand	580	case B600:
137			pser_inf->baud_rate = 600;
138			break;
139	stargo	545	#endif
140			#ifdef B1200
141	astrand	580	case B1200:
142			pser_inf->baud_rate = 1200;
143			break;
144	stargo	545	#endif
145			#ifdef B1800
146	astrand	580	case B1800:
147			pser_inf->baud_rate = 1800;
148			break;
149	stargo	545	#endif
150			#ifdef B2400
151	astrand	580	case B2400:
152			pser_inf->baud_rate = 2400;
153			break;
154	stargo	545	#endif
155			#ifdef B4800
156	astrand	580	case B4800:
157			pser_inf->baud_rate = 4800;
158			break;
159	stargo	545	#endif
160			#ifdef B9600
161	astrand	580	case B9600:
162			pser_inf->baud_rate = 9600;
163			break;
164	stargo	545	#endif
165			#ifdef B19200
166	astrand	580	case B19200:
167			pser_inf->baud_rate = 19200;
168			break;
169	stargo	545	#endif
170			#ifdef B38400
171	astrand	580	case B38400:
172			pser_inf->baud_rate = 38400;
173			break;
174	stargo	545	#endif
175			#ifdef B57600
176	astrand	580	case B57600:
177			pser_inf->baud_rate = 57600;
178			break;
179	stargo	545	#endif
180			#ifdef B115200
181	astrand	580	case B115200:
182			pser_inf->baud_rate = 115200;
183			break;
184	stargo	545	#endif
185	astrand	580	default:
186			pser_inf->baud_rate = 0;
187			break;
188			}
189	matthewc	432
190	astrand	580	speed = cfgetospeed(ptermios);
191			pser_inf->dtr = (speed == B0) ? 0 : 1;
192	matthewc	432
193	astrand	580	pser_inf->stop_bits = (ptermios->c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1;
194			pser_inf->parity =
195			(ptermios->
196			c_cflag & PARENB) ? ((ptermios->
197			c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY;
198			switch (ptermios->c_cflag & CSIZE)
199			{
200			case CS5:
201			pser_inf->word_length = 5;
202			break;
203			case CS6:
204			pser_inf->word_length = 6;
205			break;
206			case CS7:
207			pser_inf->word_length = 7;
208			break;
209			default:
210			pser_inf->word_length = 8;
211			break;
212			}
213	matthewc	432
214	n-ki	622	pser_inf->rts = (ptermios->c_cflag & CRTSCTS) ? 1 : 0;
215
216	astrand	580	return True;
217	matthewc	432	}
218
219			static void
220	n-ki	588	set_termios(SERIAL_DEVICE * pser_inf, HANDLE serial_fd)
221	matthewc	432	{
222			speed_t speed;
223
224	n-ki	588	struct termios *ptermios;
225
226			ptermios = pser_inf->ptermios;
227
228
229			switch (pser_inf->baud_rate)
230	matthewc	432	{
231	stargo	545	#ifdef B75
232	astrand	580	case 75:
233			speed = B75;
234			break;
235	stargo	545	#endif
236			#ifdef B110
237	astrand	580	case 110:
238			speed = B110;
239			break;
240	stargo	545	#endif
241			#ifdef B134
242	astrand	580	case 134:
243			speed = B134;
244			break;
245	stargo	545	#endif
246			#ifdef B150
247	astrand	580	case 150:
248			speed = B150;
249			break;
250	stargo	545	#endif
251			#ifdef B300
252	astrand	580	case 300:
253			speed = B300;
254			break;
255	stargo	545	#endif
256			#ifdef B600
257	astrand	580	case 600:
258			speed = B600;
259			break;
260	stargo	545	#endif
261			#ifdef B1200
262	astrand	580	case 1200:
263			speed = B1200;
264			break;
265	stargo	545	#endif
266			#ifdef B1800
267	astrand	580	case 1800:
268			speed = B1800;
269			break;
270	stargo	545	#endif
271			#ifdef B2400
272	astrand	580	case 2400:
273			speed = B2400;
274			break;
275	stargo	545	#endif
276			#ifdef B4800
277	astrand	580	case 4800:
278			speed = B4800;
279			break;
280	stargo	545	#endif
281			#ifdef B9600
282	astrand	580	case 9600:
283			speed = B9600;
284			break;
285	stargo	545	#endif
286			#ifdef B19200
287	astrand	580	case 19200:
288			speed = B19200;
289			break;
290	stargo	545	#endif
291			#ifdef B38400
292	astrand	580	case 38400:
293			speed = B38400;
294			break;
295	stargo	545	#endif
296			#ifdef B57600
297	astrand	580	case 57600:
298			speed = B57600;
299			break;
300	stargo	545	#endif
301			#ifdef B115200
302	astrand	580	case 115200:
303			speed = B115200;
304			break;
305	stargo	545	#endif
306	astrand	580	default:
307			speed = B0;
308			break;
309	matthewc	432	}
310
311			/* on systems with separate ispeed and ospeed, we can remember the speed
312			in ispeed while changing DTR with ospeed */
313	n-ki	588	cfsetispeed(pser_inf->ptermios, speed);
314			cfsetospeed(pser_inf->ptermios, pser_inf->dtr ? speed : 0);
315	matthewc	432
316	n-ki	622	ptermios->c_cflag &= ~(CSTOPB \| PARENB \| PARODD \| CSIZE \| CRTSCTS);
317	n-ki	588	switch (pser_inf->stop_bits)
318	matthewc	432	{
319			case STOP_BITS_2:
320	n-ki	588	ptermios->c_cflag \|= CSTOPB;
321	matthewc	432	break;
322			}
323	n-ki	622
324	n-ki	588	switch (pser_inf->parity)
325	matthewc	432	{
326			case EVEN_PARITY:
327	n-ki	588	ptermios->c_cflag \|= PARENB;
328	matthewc	432	break;
329			case ODD_PARITY:
330	n-ki	588	ptermios->c_cflag \|= PARENB \| PARODD;
331	matthewc	432	break;
332			}
333	n-ki	622
334	n-ki	588	switch (pser_inf->word_length)
335	matthewc	432	{
336	astrand	435	case 5:
337	n-ki	588	ptermios->c_cflag \|= CS5;
338	astrand	435	break;
339			case 6:
340	n-ki	588	ptermios->c_cflag \|= CS6;
341	astrand	435	break;
342			case 7:
343	n-ki	588	ptermios->c_cflag \|= CS7;
344	astrand	435	break;
345			default:
346	n-ki	588	ptermios->c_cflag \|= CS8;
347	astrand	435	break;
348	matthewc	432	}
349
350	n-ki	622	if (pser_inf->rts)
351			ptermios->c_cflag \|= CRTSCTS;
352
353	n-ki	588	tcsetattr(serial_fd, TCSANOW, ptermios);
354	matthewc	432	}
355
356	n-ki	569	/* Enumeration of devices from rdesktop.c */
357			/* returns numer of units found and initialized. */
358			/* optarg looks like ':com1=/dev/ttyS0' */
359			/* when it arrives to this function. */
360	n-ki	578	/* :com1=/dev/ttyS0,com2=/dev/ttyS1 */
361	n-ki	569	int
362	astrand	608	serial_enum_devices(uint32 * id, char *optarg)
363	matthewc	432	{
364	astrand	580	SERIAL_DEVICE *pser_inf;
365	matthewc	432
366	n-ki	578	char *pos = optarg;
367			char *pos2;
368			int count = 0;
369	matthewc	432
370	n-ki	578	// skip the first colon
371			optarg++;
372			while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
373			{
374	n-ki	569	// Init data structures for device
375			pser_inf = (SERIAL_DEVICE *) xmalloc(sizeof(SERIAL_DEVICE));
376			pser_inf->ptermios = (struct termios *) xmalloc(sizeof(struct termios));
377	stargo	755	memset(pser_inf->ptermios, 0, sizeof(struct termios));
378	n-ki	569	pser_inf->pold_termios = (struct termios *) xmalloc(sizeof(struct termios));
379	stargo	755	memset(pser_inf->pold_termios, 0, sizeof(struct termios));
380	n-ki	569
381	n-ki	578	pos2 = next_arg(optarg, '=');
382			strcpy(g_rdpdr_device[*id].name, optarg);
383	n-ki	569
384	n-ki	578	toupper_str(g_rdpdr_device[*id].name);
385	n-ki	569
386	n-ki	578	g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
387			strcpy(g_rdpdr_device[*id].local_path, pos2);
388	astrand	580	printf("SERIAL %s to %s\n", g_rdpdr_device[*id].name,
389			g_rdpdr_device[*id].local_path);
390	n-ki	569	// set device type
391			g_rdpdr_device[*id].device_type = DEVICE_TYPE_SERIAL;
392			g_rdpdr_device[id].pdevice_data = (void ) pser_inf;
393	n-ki	578	count++;
394	n-ki	569	(*id)++;
395
396	n-ki	578	optarg = pos;
397	n-ki	569	}
398	n-ki	578	return count;
399	matthewc	432	}
400
401	astrand	665	static NTSTATUS
402	astrand	580	serial_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
403			uint32 flags_and_attributes, char filename, HANDLE handle)
404	n-ki	569	{
405	astrand	580	HANDLE serial_fd;
406			SERIAL_DEVICE *pser_inf;
407			struct termios *ptermios;
408	n-ki	569
409	astrand	580	pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[device_id].pdevice_data;
410			ptermios = pser_inf->ptermios;
411	stargo	755	serial_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR \| O_NOCTTY \| O_NONBLOCK);
412	n-ki	569
413	astrand	580	if (serial_fd == -1)
414	n-ki	588	{
415			perror("open");
416	astrand	580	return STATUS_ACCESS_DENIED;
417	n-ki	588	}
418	n-ki	569
419	astrand	580	if (!get_termios(pser_inf, serial_fd))
420	n-ki	622	{
421			printf("INFO: SERIAL %s access denied\n", g_rdpdr_device[device_id].name);
422			fflush(stdout);
423	astrand	580	return STATUS_ACCESS_DENIED;
424	n-ki	622	}
425	n-ki	569
426	n-ki	578	// Store handle for later use
427	astrand	580	g_rdpdr_device[device_id].handle = serial_fd;
428	n-ki	569
429	n-ki	578	/* some sane information */
430	n-ki	622	printf("INFO: SERIAL %s to %s\nINFO: speed %u baud, stop bits %u, parity %u, word length %u bits, dtr %u, rts %u\n", g_rdpdr_device[device_id].name, g_rdpdr_device[device_id].local_path, pser_inf->baud_rate, pser_inf->stop_bits, pser_inf->parity, pser_inf->word_length, pser_inf->dtr, pser_inf->rts);
431
432	astrand	580	printf("INFO: use stty to change settings\n");
433	n-ki	569
434	n-ki	588	/* ptermios->c_cflag = B115200 \| CRTSCTS \| CS8 \| CLOCAL \| CREAD;
435			ptermios->c_cflag \|= CREAD;
436			ptermios->c_lflag \|= ICANON;
437			ptermios->c_iflag = IGNPAR \| ICRNL;
438	n-ki	569
439	n-ki	588	tcsetattr(serial_fd, TCSANOW, ptermios);
440			*/
441	n-ki	592
442	stargo	755	cfmakeraw(pser_inf->ptermios);
443	astrand	580	*handle = serial_fd;
444	n-ki	592
445			/* all read and writes should be non blocking */
446			if (fcntl(*handle, F_SETFL, O_NONBLOCK) == -1)
447			perror("fcntl");
448
449	astrand	580	return STATUS_SUCCESS;
450	n-ki	569	}
451
452	matthewc	432	static NTSTATUS
453			serial_close(HANDLE handle)
454			{
455	n-ki	622	int i = get_device_index(handle);
456			if (i >= 0)
457			g_rdpdr_device[i].handle = 0;
458	n-ki	588	close(handle);
459	matthewc	432	return STATUS_SUCCESS;
460			}
461
462	astrand	665	static NTSTATUS
463	astrand	580	serial_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
464	matthewc	432	{
465	astrand	580	long timeout;
466			SERIAL_DEVICE *pser_inf;
467			struct termios *ptermios;
468	n-ki	569
469	n-ki	592	timeout = 90;
470	astrand	580	pser_inf = get_serial_info(handle);
471			ptermios = pser_inf->ptermios;
472	n-ki	569
473	astrand	580	// Set timeouts kind of like the windows serial timeout parameters. Multiply timeout
474			// with requested read size
475			if (pser_inf->read_total_timeout_multiplier \| pser_inf->read_total_timeout_constant)
476			{
477			timeout =
478			(pser_inf->read_total_timeout_multiplier * length +
479			pser_inf->read_total_timeout_constant + 99) / 100;
480			}
481			else if (pser_inf->read_interval_timeout)
482			{
483			timeout = (pser_inf->read_interval_timeout * length + 99) / 100;
484			}
485	n-ki	569
486	astrand	580	// If a timeout is set, do a blocking read, which times out after some time.
487			// It will make rdesktop less responsive, but it will improve serial performance, by not
488			// reading one character at a time.
489			if (timeout == 0)
490			{
491			ptermios->c_cc[VTIME] = 0;
492			ptermios->c_cc[VMIN] = 0;
493			}
494			else
495			{
496			ptermios->c_cc[VTIME] = timeout;
497			ptermios->c_cc[VMIN] = 1;
498			}
499			tcsetattr(handle, TCSANOW, ptermios);
500	n-ki	592
501
502	astrand	580	*result = read(handle, data, length);
503	n-ki	592
504	n-ki	622	//hexdump(data, *read);
505
506	astrand	580	return STATUS_SUCCESS;
507	matthewc	432	}
508
509	astrand	665	static NTSTATUS
510	astrand	580	serial_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
511	matthewc	432	{
512	astrand	580	*result = write(handle, data, length);
513			return STATUS_SUCCESS;
514	matthewc	432	}
515
516			static NTSTATUS
517			serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
518			{
519	astrand	669	#if 0
520	n-ki	622	int flush_mask, purge_mask;
521	astrand	669	#endif
522	matthewc	432	uint32 result;
523			uint8 immediate;
524	n-ki	588	SERIAL_DEVICE *pser_inf;
525			struct termios *ptermios;
526	matthewc	432
527			if ((request >> 16) != FILE_DEVICE_SERIAL_PORT)
528			return STATUS_INVALID_PARAMETER;
529
530	n-ki	588	pser_inf = get_serial_info(handle);
531			ptermios = pser_inf->ptermios;
532
533	matthewc	432	/* extract operation */
534			request >>= 2;
535			request &= 0xfff;
536
537			printf("SERIAL IOCTL %d\n", request);
538
539			switch (request)
540			{
541			case SERIAL_SET_BAUD_RATE:
542	n-ki	588	in_uint32_le(in, pser_inf->baud_rate);
543			set_termios(pser_inf, handle);
544	matthewc	432	break;
545			case SERIAL_GET_BAUD_RATE:
546	n-ki	588	out_uint32_le(out, pser_inf->baud_rate);
547	matthewc	432	break;
548			case SERIAL_SET_QUEUE_SIZE:
549	n-ki	588	in_uint32_le(in, pser_inf->queue_in_size);
550			in_uint32_le(in, pser_inf->queue_out_size);
551	matthewc	432	break;
552			case SERIAL_SET_LINE_CONTROL:
553	n-ki	588	in_uint8(in, pser_inf->stop_bits);
554			in_uint8(in, pser_inf->parity);
555			in_uint8(in, pser_inf->word_length);
556			set_termios(pser_inf, handle);
557	matthewc	432	break;
558			case SERIAL_GET_LINE_CONTROL:
559	n-ki	588	out_uint8(out, pser_inf->stop_bits);
560			out_uint8(out, pser_inf->parity);
561			out_uint8(out, pser_inf->word_length);
562	matthewc	432	break;
563			case SERIAL_IMMEDIATE_CHAR:
564			in_uint8(in, immediate);
565	n-ki	569	serial_write(handle, &immediate, 1, 0, &result);
566	matthewc	432	break;
567			case SERIAL_CONFIG_SIZE:
568			out_uint32_le(out, 0);
569			break;
570			case SERIAL_GET_CHARS:
571			out_uint8s(out, 6);
572			break;
573			case SERIAL_SET_CHARS:
574			in_uint8s(in, 6);
575			break;
576			case SERIAL_GET_HANDFLOW:
577			out_uint32_le(out, 0);
578	astrand	435	out_uint32_le(out, 3); /* Xon/Xoff */
579	matthewc	432	out_uint32_le(out, 0);
580			out_uint32_le(out, 0);
581			break;
582			case SERIAL_SET_HANDFLOW:
583			in_uint8s(in, 16);
584			break;
585			case SERIAL_SET_TIMEOUTS:
586			in_uint8s(in, 20);
587			break;
588			case SERIAL_GET_TIMEOUTS:
589			out_uint8s(out, 20);
590			break;
591			case SERIAL_GET_WAIT_MASK:
592	n-ki	588	out_uint32(out, pser_inf->wait_mask);
593	matthewc	432	break;
594			case SERIAL_SET_WAIT_MASK:
595	n-ki	588	in_uint32(in, pser_inf->wait_mask);
596	matthewc	432	break;
597			case SERIAL_SET_DTR:
598	n-ki	588	pser_inf->dtr = 1;
599			set_termios(pser_inf, handle);
600	matthewc	432	break;
601			case SERIAL_CLR_DTR:
602	n-ki	588	pser_inf->dtr = 0;
603			set_termios(pser_inf, handle);
604	matthewc	432	break;
605	n-ki	622	case SERIAL_SET_RTS:
606			pser_inf->rts = 1;
607			set_termios(pser_inf, handle);
608	matthewc	432	break;
609	n-ki	622	case SERIAL_CLR_RTS:
610			pser_inf->rts = 0;
611			set_termios(pser_inf, handle);
612	matthewc	432	break;
613	n-ki	622	case SERIAL_GET_MODEMSTATUS:
614			out_uint32_le(out, 0); /* Errors */
615			break;
616			case SERIAL_GET_COMMSTATUS:
617			out_uint32_le(out, 0); /* Errors */
618			out_uint32_le(out, 0); /* Hold reasons */
619			out_uint32_le(out, 0); /* Amount in in queue */
620			out_uint32_le(out, 0); /* Amount in out queue */
621			out_uint8(out, 0); /* EofReceived */
622			out_uint8(out, 0); /* WaitForImmediate */
623			break;
624			#if 0
625	matthewc	432	case SERIAL_PURGE:
626	astrand	580	printf("SERIAL_PURGE\n");
627			in_uint32(in, purge_mask);
628			if (purge_mask & 0x04)
629			flush_mask \|= TCOFLUSH;
630			if (purge_mask & 0x08)
631			flush_mask \|= TCIFLUSH;
632			if (flush_mask != 0)
633			tcflush(handle, flush_mask);
634			if (purge_mask & 0x01)
635			rdpdr_abort_io(handle, 4, STATUS_CANCELLED);
636			if (purge_mask & 0x02)
637			rdpdr_abort_io(handle, 3, STATUS_CANCELLED);
638			break;
639	n-ki	622	case SERIAL_WAIT_ON_MASK:
640			/* XXX implement me */
641			out_uint32_le(out, pser_inf->wait_mask);
642			break;
643			case SERIAL_SET_BREAK_ON:
644			tcsendbreak(serial_fd, 0);
645			break;
646	matthewc	432	case SERIAL_RESET_DEVICE:
647			case SERIAL_SET_BREAK_OFF:
648			case SERIAL_SET_XOFF:
649			case SERIAL_SET_XON:
650			/* ignore */
651			break;
652			#endif
653			default:
654			unimpl("SERIAL IOCTL %d\n", request);
655			return STATUS_INVALID_PARAMETER;
656			}
657
658			return STATUS_SUCCESS;
659			}
660
661	n-ki	569	/* Read timeout for a given file descripter (device) when adding fd's to select() */
662			BOOL
663	n-ki	588	serial_get_timeout(HANDLE handle, uint32 length, uint32 * timeout, uint32 * itv_timeout)
664	n-ki	569	{
665	astrand	580	int index;
666			SERIAL_DEVICE *pser_inf;
667	n-ki	569
668	astrand	580	index = get_device_index(handle);
669	n-ki	622	if (index < 0)
670			return True;
671	n-ki	569
672	astrand	580	if (g_rdpdr_device[index].device_type != DEVICE_TYPE_SERIAL)
673			{
674			return False;
675			}
676	n-ki	569
677	astrand	580	pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
678	n-ki	569
679	astrand	580	*timeout =
680			pser_inf->read_total_timeout_multiplier * length +
681			pser_inf->read_total_timeout_constant;
682			*itv_timeout = pser_inf->read_interval_timeout;
683			return True;
684	n-ki	569	}
685
686	astrand	435	DEVICE_FNS serial_fns = {
687	matthewc	432	serial_create,
688			serial_close,
689			serial_read,
690			serial_write,
691			serial_device_control
692			};