increase timeout granularity to handle missing acks on culfw-devices

[hmcfgusb] / hmland.c

diff --git a/hmland.c b/hmland.c
index bccfa0d3f5bddae062afe8532ca37ec88f97eb4b..38cd7a3a9607442316181181b4f3f0304ce3c439 100644 (file)
--- a/hmland.c
+++ b/hmland.c
@@ -1,4 +1,4 @@
-/* HM-CFG-LAN emuldation for HM-CFG-USB
+/* HM-CFG-LAN emulation for HM-CFG-USB

  *
  * Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
  *
  *
  * Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
  *


@@ -28,33 +28,200 @@
 #include <string.h>
 #include <strings.h>
 #include <poll.h>
 #include <string.h>
 #include <strings.h>
 #include <poll.h>

+#include <signal.h>

 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>

+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>

 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <libusb-1.0/libusb.h>
 
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <libusb-1.0/libusb.h>
 

+#include "version.h"

 #include "hexdump.h"
 #include "hmcfgusb.h"
 
 #include "hexdump.h"
 #include "hmcfgusb.h"
 

+#define PID_FILE "/var/run/hmland.pid"
+
+#define DEFAULT_REBOOT_SECONDS 86400
+
+extern char *optarg;
+

 static int impersonate_hmlanif = 0;
 static int impersonate_hmlanif = 0;

+static int debug = 0;
+static int verbose = 0;
+static int reboot_seconds = 0;
+static int reboot_at_hour = -1;
+static int reboot_at_minute = -1;
+
+struct queued_rx {
+       char *rx;
+       int len;
+       struct queued_rx *next;
+};
+
+static struct queued_rx *qrx = NULL;
+static int wait_for_h = 0;
+
+#define        FLAG_LENGTH_BYTE        (1<<0)
+#define        FLAG_FORMAT_HEX         (1<<1)
+#define        FLAG_COMMA_BEFORE       (1<<2)
+#define        FLAG_COMMA_AFTER        (1<<3)
+#define        FLAG_NL                 (1<<4)
+#define        FLAG_IGNORE_COMMAS      (1<<5)

 
 

-static void hmlan_format_out(uint8_t *buf, int buf_len, void *data)
+#define CHECK_SPACE(x)         if ((*outpos + x) > outend) { fprintf(stderr, "Not enough space!\n"); return 0; }
+#define CHECK_AVAIL(x)         if ((*inpos + x) > inend) { fprintf(stderr, "Not enough input available!\n"); return 0; }
+
+static void print_timestamp(FILE *f)

 {
 {

-       char out[1024];
-       char *pos;
-       int fd = *((int*)data);
-       int len;
+       struct timeval tv;
+       struct tm *tmp;
+       char ts[32];
+
+       gettimeofday(&tv, NULL);
+       tmp = localtime(&tv.tv_sec);
+       memset(ts, 0, sizeof(ts));
+       strftime(ts, sizeof(ts)-1, "%Y-%m-%d %H:%M:%S", tmp);
+       fprintf(f, "%s.%06ld: ", ts, tv.tv_usec);
+}
+
+static int format_part_out(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, int len, int flags)
+{
+       const uint8_t nibble[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+               'A', 'B', 'C', 'D', 'E', 'F'};
+       uint8_t *buf_out = *outpos;
+       uint8_t *outend = *outpos + outlen;
+       uint8_t *inend = *inpos + inlen;

        int i;
 
        int i;
 

+       if (flags & FLAG_COMMA_BEFORE) {
+               CHECK_SPACE(1);
+               **outpos=',';
+               *outpos += 1;
+       }
+
+       if (flags & FLAG_LENGTH_BYTE) {
+               CHECK_AVAIL(1);
+               len = **inpos;
+               *inpos += 1;
+       }
+
+       if (flags & FLAG_FORMAT_HEX) {
+               CHECK_AVAIL(len);
+               CHECK_SPACE(len*2);
+               for (i = 0; i < len; i++) {
+                       **outpos = nibble[((**inpos) & 0xf0) >> 4];
+                       *outpos += 1;
+                       **outpos = nibble[((**inpos) & 0xf)];
+                       *inpos += 1; *outpos += 1;
+               }
+       } else {
+               CHECK_AVAIL(len);
+               CHECK_SPACE(len);
+               memcpy(*outpos, *inpos, len);
+               *outpos += len;
+               *inpos += len;
+       }
+
+       if (flags & FLAG_COMMA_AFTER) {
+               CHECK_SPACE(1);
+               **outpos=',';
+               *outpos += 1;
+       }
+
+       if (flags & FLAG_NL) {
+               CHECK_SPACE(2);
+               **outpos='\r';
+               *outpos += 1;
+               **outpos='\n';
+               *outpos += 1;
+       }
+
+       return *outpos - buf_out;
+}
+
+static uint8_t ascii_to_nibble(uint8_t a)
+{
+       uint8_t c = 0x00;
+
+       if ((a >= '0') && (a <= '9')) {
+               c = a - '0';
+       } else if ((a >= 'A') && (a <= 'F')) {
+               c = (a - 'A') + 10;
+       } else if ((a >= 'a') && (a <= 'f')) {
+               c = (a - 'a') + 10;
+       }
+
+       return c;
+}
+
+static int parse_part_in(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, int flags)
+{
+       uint8_t *buf_out = *outpos;
+       uint8_t *outend = *outpos + outlen;
+       uint8_t *inend = *inpos + inlen;
+
+       if (flags & FLAG_LENGTH_BYTE) {
+               int len = 0;
+               uint8_t *ip;
+
+               ip = *inpos;
+               while(ip < inend) {
+                       if (*ip == ',') {
+                               ip++;
+                               if (!(flags & FLAG_IGNORE_COMMAS))
+                                       break;
+
+                               continue;
+                       }
+                       len++;
+                       ip++;
+               }
+               CHECK_SPACE(1);
+               **outpos = (len / 2);
+               *outpos += 1;
+       }
+
+       while(*inpos < inend) {
+               if (**inpos == ',') {
+                       *inpos += 1;
+                       if (!(flags & FLAG_IGNORE_COMMAS))
+                               break;
+
+                       continue;
+               }
+
+               CHECK_SPACE(1);
+               CHECK_AVAIL(2);
+
+               **outpos = ascii_to_nibble(**inpos) << 4;
+               *inpos += 1;
+               **outpos |= ascii_to_nibble(**inpos);
+               *inpos += 1; *outpos += 1;
+       }
+
+       return *outpos - buf_out;
+}
+
+static int hmlan_format_out(uint8_t *buf, int buf_len, void *data)
+{
+       uint8_t out[1024];
+       uint8_t *outpos;
+       uint8_t *inpos;
+       int fd = *((int*)data);
+       int w;
+

        if (buf_len < 1)
        if (buf_len < 1)

-               return;
+               return 1;

 
        memset(out, 0, sizeof(out));
 
        memset(out, 0, sizeof(out));

-       pos = out;
+       outpos = out;
+       inpos = buf;

 
 

-       *pos++ = buf[0];
+       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0);

        switch(buf[0]) {
                case 'H':
                        if (impersonate_hmlanif) {
        switch(buf[0]) {
                case 'H':
                        if (impersonate_hmlanif) {


@@ -62,149 +229,203 @@ static void hmlan_format_out(uint8_t *buf, int buf_len, void *data)
                                buf[6] = 'A';
                                buf[7] = 'N';
                        }
                                buf[6] = 'A';
                                buf[7] = 'N';
                        }

-                       len = buf[1];
-                       for (i = 2; i < len + 2; i++) {
-                               *pos++=buf[i];
-                       }
-                       snprintf(pos, 7, ",%02X%02X,", buf[i], buf[i+1]);
-                       pos += 6;
-
-                       i += 2;
-                       len = buf[i]+i+1;
-                       i++;
-                       for (; i < len; i++) {
-                               *pos++=buf[i];
-                       }
-                       *pos++=',';
-                       len = i+12;
-                       for (; i < len; i++) {
-                               snprintf(pos, 3, "%02X", buf[i]);
-                               pos += 2;
-
-                               switch(len-i) {
-                                       case 10:
-                                       case 7:
-                                       case 3:
-                                               *pos++=',';
-                                               break;
-                                       default:
-                                               break;
-                               }
-                       }
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL);

 
                        break;
                case 'E':
 
                        break;
                case 'E':

-                       len = 13 + buf[13];
-                       for (i = 0; i < len; i++) {
-                               if (i != 12) {
-                                       snprintf(pos, 3, "%02X", buf[i+1]);
-                                       pos += 2;
-                               }
-                               switch(i) {
-                                       case 2:
-                                       case 4:
-                                       case 8:
-                                       case 9:
-                                       case 11:
-                                               *pos++=',';
-                                               break;
-                                       default:
-                                               break;
-                               }
-                       }
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE | FLAG_NL);
+

                        break;
                case 'R':
                        break;
                case 'R':

-                       len = 14 + buf[14];
-                       for (i = 0; i < len; i++) {
-                               if (i != 13) {
-                                       snprintf(pos, 3, "%02X", buf[i+1]);
-                                       pos += 2;
-                               }
-                               switch(i) {
-                                       case 3:
-                                       case 5:
-                                       case 9:
-                                       case 10:
-                                       case 12:
-                                               *pos++=',';
-                                               break;
-                                       default:
-                                               break;
-                               }
-                       }
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE | FLAG_NL);
+

                        break;
                case 'I':
                        break;
                case 'I':

-                       //HM> 0x0000: 49 00 00 00 00 55 53 42 2d 49 46 03 bc 0a 4a 45   I....USB-IF...JE
-                       //HM> 0x0010: 51 30 35 33 35 31 32 32 1d b1 55 68 ea 13 00 14   Q0535122..Uh....
-                       //HM> 0x0020: 9f a6 00 03 00 00 00 00 00 00 00 00 00 00 00 00   ................
-                       //HM> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................ 
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL);
+
+                       break;
+               case 'G':
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_NL);
+
+                       break;

                default:
                default:

-                       for (i = 1; i < buf_len; i++) {
-                               snprintf(pos, 3, "%02X", buf[i]);
-                               pos += 2;
-                       }
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), buf_len-1, FLAG_FORMAT_HEX | FLAG_NL);

                        hexdump(buf, buf_len, "Unknown> ");
                        break;
        }
                        hexdump(buf, buf_len, "Unknown> ");
                        break;
        }

-       *pos++='\r';
-       *pos++='\n';
-       write(fd, out, pos-out);
+
+       /* Queue packet until first respone to 'K' is received */
+       if (wait_for_h && buf[0] != 'H') {
+               struct queued_rx **rxp = &qrx;
+
+               while (*rxp)
+                       rxp = &((*rxp)->next);
+
+               *rxp = malloc(sizeof(struct queued_rx));
+               if (!*rxp) {
+                       perror("malloc");
+                       return 0;
+               }
+
+               memset(*rxp, 0, sizeof(struct queued_rx));
+               (*rxp)->len = outpos-out;
+               (*rxp)->rx = malloc((*rxp)->len);
+               if (!(*rxp)->rx) {
+                       perror("malloc");
+                       return 0;
+               }
+               memset((*rxp)->rx, 0, (*rxp)->len);
+               memcpy((*rxp)->rx, out, (*rxp)->len);
+
+               return 1;
+       }
+
+       if (verbose) {
+               int i;
+
+               print_timestamp(stdout);
+               printf("LAN < ");
+               for (i = 0; i < outpos-out-2; i++)
+                       printf("%c", out[i]);
+               printf("\n");
+       }
+
+       w = write(fd, out, outpos-out);
+       if (w <= 0) {
+               perror("write");
+               return 0;
+       }
+
+       /* Send all queued packets */
+       if (wait_for_h) {
+               struct queued_rx *curr_rx = qrx;
+               struct queued_rx *last_rx;
+
+               while (curr_rx) {
+                       if (verbose) {
+                               int i;
+
+                               print_timestamp(stdout);
+                               printf("LAN < ");
+                               for (i = 0; i < curr_rx->len-2; i++)
+                                       printf("%c", curr_rx->rx[i]);
+                               printf("\n");
+                       }
+
+                       w = write(fd, curr_rx->rx, curr_rx->len);
+                       if (w <= 0) {
+                               perror("write");
+                       }
+                       last_rx = curr_rx;
+                       curr_rx = curr_rx->next;
+
+                       free(last_rx->rx);
+                       free(last_rx);
+               }
+
+               qrx = NULL;
+
+               wait_for_h = 0;
+       }
+
+       return 1;

 }
 
 static int hmlan_parse_in(int fd, void *data)
 {
        struct hmcfgusb_dev *dev = data;
 }
 
 static int hmlan_parse_in(int fd, void *data)
 {
        struct hmcfgusb_dev *dev = data;

-       unsigned char buf[1024];
-       unsigned char send_buf[0x40]; //FIXME!!!
-       char tmp[3];
+       uint8_t buf[1025];
+       uint8_t out[0x40]; //FIXME!!!
+       uint8_t *outpos;
+       uint8_t *inpos;

        int i;
        int i;

+       int last;

        int r;
 
        int r;
 

-       r = read(fd, buf, sizeof(buf));
+       memset(buf, 0, sizeof(buf));
+
+       r = read(fd, buf, sizeof(buf)-1);

        if (r > 0) {
        if (r > 0) {

-               int cnt;
+               uint8_t *inend = buf + r;

 
 

-               memset(send_buf, 0, sizeof(send_buf));
-               for (i = 0; i < r; i++) {
-                       if ((buf[i] == 0x0a) ||
-                                       (buf[i] == 0x0d)) {
-                               r = i;
-                               break;
+               inpos = buf;
+
+               while (inpos < inend) {
+                       uint8_t *instart = inpos;
+
+                       if ((*inpos == '\r') || (*inpos == '\n')) {
+                               inpos++;
+                               continue;

                        }
                        }

-               }
+                       
+                       outpos = out;

 
 

-               send_buf[0] = buf[0];
-
-               cnt = 0;
-               for (i = 1; i < r; i++) {
-                       if (buf[i] == ',') {
-                               switch (buf[0]) {
-                                       case 'S':
-                                               if (cnt == 4) {
-                                                       /* Add msg length */
-                                                       memmove(buf+i+2, buf+i+1, r-(i+1));
-                                                       snprintf(tmp, 3, "%02X", (int)((r-(i+1))/2));
-                                                       memcpy(buf+i, tmp, 2);
-                                                       r++;
-                                                       break;
-                                               }
-                                       default:
-                                               memmove(buf+i, buf+i+1, r-(i+1));
-                                               r--;
-                                               break;
+                       last = inend - inpos;
+
+                       for (i = 0; i < last; i++) {
+                               if ((inpos[i] == '\r') || (inpos[i] == '\n')) {
+                                       last = i;
+                                       break;

                                }
                                }

-                               cnt++;

                        }
                        }

-               }

 
 

-               memset(tmp, 0, sizeof(tmp));
-               for (i = 1; i < r; i+=2) {
-                       memcpy(tmp, buf + i, 2);
-                       send_buf[1+(i/2)] = strtoul(tmp, NULL, 16);
+                       if (last == 0)
+                               continue;
+
+                       if (verbose) {
+                               print_timestamp(stdout);
+                               printf("LAN > ");
+                               for (i = 0; i < last; i++)
+                                       printf("%c", instart[i]);
+                               printf("\n");
+                       }
+
+                       memset(out, 0, sizeof(out));
+                       *outpos++ = *inpos++;
+
+                       switch(*instart) {
+                               case 'S':
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
+                                       break;
+                               case 'Y':
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
+                                       break;
+                               default:
+                                       parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS);
+                                       break;
+                       }
+
+                       hmcfgusb_send(dev, out, sizeof(out), 1);

                }
                }

-               hmcfgusb_send(dev, send_buf, 1+(i/2), 1);

        } else if (r < 0) {
        } else if (r < 0) {

-               perror("read");
+               if (errno != ECONNRESET)
+                       perror("read");

                return r;
        } else {
                return 0;
                return r;
        } else {
                return 0;


@@ -213,17 +434,57 @@ static int hmlan_parse_in(int fd, void *data)
        return 1;
 }
 
        return 1;
 }
 

-static int comm(int fd_in, int fd_out, int master_socket)
+static int comm(int fd_in, int fd_out, int master_socket, int flags)

 {
        struct hmcfgusb_dev *dev;
 {
        struct hmcfgusb_dev *dev;

+       uint8_t out[0x40]; //FIXME!!!

        int quit = 0;
 
        int quit = 0;
 

+       hmcfgusb_set_debug(debug);
+

        dev = hmcfgusb_init(hmlan_format_out, &fd_out);
        if (!dev) {
                fprintf(stderr, "Can't initialize HM-CFG-USB!\n");
                return 0;
        }
 
        dev = hmcfgusb_init(hmlan_format_out, &fd_out);
        if (!dev) {
                fprintf(stderr, "Can't initialize HM-CFG-USB!\n");
                return 0;
        }
 

+       if (dev->bootloader) {
+               if (verbose)
+                       printf("HM-CFG-USB in bootloader mode, restarting in normal mode...\n");
+
+               hmcfgusb_leave_bootloader(dev);
+
+               hmcfgusb_close(dev);
+               sleep(1);
+               return 0;
+       }
+
+       if ((reboot_at_hour != -1) && (reboot_at_minute != -1)) {
+               struct tm *tm_s;
+               time_t tm;
+
+               tm = time(NULL);
+               tm_s = localtime(&tm);
+               if (tm_s == NULL) {
+                       perror("localtime");
+                       return 0;
+               }
+
+               tm_s->tm_hour = reboot_at_hour;
+               tm_s->tm_min = reboot_at_minute;
+               tm_s->tm_sec = 0;
+
+               tm = mktime(tm_s);
+               reboot_seconds = tm - dev->opened_at;
+
+               while (reboot_seconds <= 0)
+                       reboot_seconds += 86400;
+       }
+
+       if (verbose && reboot_seconds)
+               printf("Rebooting in %u seconds\n", reboot_seconds);
+
+

        if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) {
                fprintf(stderr, "Can't add client to pollfd!\n");
                hmcfgusb_close(dev);
        if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) {
                fprintf(stderr, "Can't add client to pollfd!\n");
                hmcfgusb_close(dev);


@@ -238,12 +499,16 @@ static int comm(int fd_in, int fd_out, int master_socket)
                }
        }
 
                }
        }
 

-       hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
+       memset(out, 0, sizeof(out));
+       out[0] = 'K';
+       wait_for_h = 1;
+       hmcfgusb_send_null_frame(dev, 1);
+       hmcfgusb_send(dev, out, sizeof(out), 1);

 
        while(!quit) {
                int fd;
 
 
        while(!quit) {
                int fd;
 

-               fd = hmcfgusb_poll(dev, 3600);
+               fd = hmcfgusb_poll(dev, 1000);  /* Wakeup device/bus at least once a second */

                if (fd >= 0) {
                        if (fd == master_socket) {
                                int client;
                if (fd >= 0) {
                        if (fd == master_socket) {
                                int client;


@@ -260,9 +525,27 @@ static int comm(int fd_in, int fd_out, int master_socket)
                        }
                } else if (fd == -1) {
                        if (errno) {
                        }
                } else if (fd == -1) {
                        if (errno) {

-                               perror("hmcfgusb_poll");
-                               quit = 1;
+                               if (errno != ETIMEDOUT) {
+                                       perror("hmcfgusb_poll");
+                                       quit = 1;
+                               } else {
+                                       /* periodically wakeup the device */
+                                       hmcfgusb_send_null_frame(dev, 1);
+                                       if (wait_for_h) {
+                                               memset(out, 0, sizeof(out));
+                                               out[0] = 'K';
+                                               hmcfgusb_send(dev, out, sizeof(out), 1);
+                                       }
+                               }
+                       }
+               }
+
+               if (reboot_seconds && ((dev->opened_at + reboot_seconds) <= time(NULL))) {
+                       if (verbose) {
+                               printf("HM-CFG-USB running since %lu seconds, rebooting now...\n",
+                                       time(NULL) - dev->opened_at);

                        }
                        }

+                       hmcfgusb_enter_bootloader(dev);

                }
        }
 
                }
        }
 


@@ -270,11 +553,96 @@ static int comm(int fd_in, int fd_out, int master_socket)
        return 1;
 }
 
        return 1;
 }
 

-static int socket_server(int port)
+void sigterm_handler(int sig)

 {
 {

+       if (unlink(PID_FILE) == -1)
+               perror("Can't remove PID file");
+
+       exit(EXIT_SUCCESS);
+}
+
+#define FLAG_DAEMON    (1 << 0)
+#define FLAG_PID_FILE  (1 << 1)
+
+static int socket_server(char *iface, int port, int flags)
+{
+       struct sigaction sact;

        struct sockaddr_in sin;
        int sock;
        int n;
        struct sockaddr_in sin;
        int sock;
        int n;

+       pid_t pid;
+
+       if (flags & FLAG_DAEMON) {
+               FILE *pidfile = NULL;
+
+               if (flags & FLAG_PID_FILE) {
+                       int fd;
+
+                       fd = open(PID_FILE, O_CREAT | O_EXCL | O_WRONLY, 0644);
+                       if (fd == -1) {
+                               if (errno == EEXIST) {
+                                       pid_t old_pid;
+                                       pidfile = fopen(PID_FILE, "r");
+                                       if (!pidfile) {
+                                               perror("PID file " PID_FILE " already exists, already running?");
+                                               exit(EXIT_FAILURE);
+                                       }
+
+                                       if (fscanf(pidfile, "%u", &old_pid) != 1) {
+                                               fclose(pidfile);
+                                               fprintf(stderr, "Can't read old PID from " PID_FILE ", already running?\n");
+                                               exit(EXIT_FAILURE);
+                                       }
+
+                                       fclose(pidfile);
+
+                                       fprintf(stderr, "Already running with PID %u according to " PID_FILE "!\n", old_pid);
+                                       exit(EXIT_FAILURE);
+                               }
+                               perror("Can't create PID file " PID_FILE);
+                               exit(EXIT_FAILURE);
+                       }
+
+                       pidfile = fdopen(fd, "w");
+                       if (!pidfile) {
+                               perror("Can't reopen PID file fd");
+                               exit(EXIT_FAILURE);
+                       }
+
+                       memset(&sact, 0, sizeof(sact));
+                       sact.sa_handler = sigterm_handler;
+
+                       if (sigaction(SIGTERM, &sact, NULL) == -1) {
+                               perror("sigaction(SIGTERM)");
+                               exit(EXIT_FAILURE);
+                       }
+               }
+
+               pid = fork();
+               if (pid > 0) {
+                       if (pidfile) {
+                               fprintf(pidfile, "%u\n", pid);
+                               fclose(pidfile);
+                       }
+
+                       printf("Daemon with PID %u started!\n", pid);
+                       exit(EXIT_SUCCESS);
+               } else if (pid < 0) {
+                       perror("fork");
+                       exit(EXIT_FAILURE);
+               }
+
+               if (pidfile)
+                       fclose(pidfile);
+       }
+
+       memset(&sact, 0, sizeof(sact));
+       sact.sa_handler = SIG_IGN;
+
+       if (sigaction(SIGPIPE, &sact, NULL) == -1) {
+               perror("sigaction(SIGPIPE)");
+               exit(EXIT_FAILURE);
+       }

 
        impersonate_hmlanif = 1;
 
 
        impersonate_hmlanif = 1;
 


@@ -293,7 +661,14 @@ static int socket_server(int port)
        memset(&sin, 0, sizeof(sin));
        sin.sin_family = AF_INET;
        sin.sin_port = htons(port);
        memset(&sin, 0, sizeof(sin));
        sin.sin_family = AF_INET;
        sin.sin_port = htons(port);

-       sin.sin_addr.s_addr = htonl(INADDR_ANY);
+       if (!iface) {
+               sin.sin_addr.s_addr = htonl(INADDR_ANY);
+       } else {
+               if (inet_pton(AF_INET, iface, &(sin.sin_addr.s_addr)) != 1) {
+                       fprintf(stderr, "Can't convert IP %s, aborting!\n", iface);
+                       return EXIT_FAILURE;
+               }
+       }

 
        if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
                perror("Can't bind socket");
 
        if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
                perror("Can't bind socket");


@@ -309,6 +684,7 @@ static int socket_server(int port)
                struct sockaddr_in csin;
                socklen_t csinlen;
                int client;
                struct sockaddr_in csin;
                socklen_t csinlen;
                int client;

+               in_addr_t client_addr;

 
                memset(&csin, 0, sizeof(csin));
                csinlen = sizeof(csin);
 
                memset(&csin, 0, sizeof(csin));
                csinlen = sizeof(csin);


@@ -318,30 +694,141 @@ static int socket_server(int port)
                        continue;
                }
 
                        continue;
                }
 

-               printf("Client accepted!\n");
+               /* FIXME: getnameinfo... */
+               client_addr = ntohl(csin.sin_addr.s_addr);
+
+               if (verbose) {
+                       print_timestamp(stdout);
+                       printf("Client %d.%d.%d.%d connected!\n",
+                                       (client_addr & 0xff000000) >> 24,
+                                       (client_addr & 0x00ff0000) >> 16,
+                                       (client_addr & 0x0000ff00) >> 8,
+                                       (client_addr & 0x000000ff));
+               }

 
 

-               comm(client, client, sock);
+               comm(client, client, sock, flags);

 
                shutdown(client, SHUT_RDWR);
                close(client);
 
 
                shutdown(client, SHUT_RDWR);
                close(client);
 

-               printf("Connection closed!\n");
-
+               if (verbose) {
+                       print_timestamp(stdout);
+                       printf("Connection to %d.%d.%d.%d closed!\n",
+                                       (client_addr & 0xff000000) >> 24,
+                                       (client_addr & 0x00ff0000) >> 16,
+                                       (client_addr & 0x0000ff00) >> 8,
+                                       (client_addr & 0x000000ff));
+               }
+               sleep(1);

        }
 
        return EXIT_SUCCESS;
 }
 
        }
 
        return EXIT_SUCCESS;
 }
 

-static int interactive_server(void)
+static int interactive_server(int flags)

 {
 {

-       if (!comm(STDIN_FILENO, STDOUT_FILENO, -1))
+       if (!comm(STDIN_FILENO, STDOUT_FILENO, -1, flags))

                return EXIT_FAILURE;
 
        return EXIT_SUCCESS;
 }
 
                return EXIT_FAILURE;
 
        return EXIT_SUCCESS;
 }
 

+void hmlan_syntax(char *prog)
+{
+       fprintf(stderr, "Syntax: %s options\n\n", prog);
+       fprintf(stderr, "Possible options:\n");
+       fprintf(stderr, "\t-D\t\tdebug mode\n");
+       fprintf(stderr, "\t-d\t\tdaemon mode\n");
+       fprintf(stderr, "\t-h\t\tthis help\n");
+       fprintf(stderr, "\t-i\t\tinteractive mode (connect HM-CFG-USB to terminal)\n");
+       fprintf(stderr, "\t-l ip\t\tlisten on given IP address only (for example 127.0.0.1)\n");
+       fprintf(stderr, "\t-P\t\tcreate PID file " PID_FILE " in daemon mode\n");
+       fprintf(stderr, "\t-p n\t\tlisten on port n (default: 1000)\n");
+       fprintf(stderr, "\t-r n\t\treboot HM-CFG-USB after n seconds (0: no reboot, default: %u)\n", DEFAULT_REBOOT_SECONDS);
+       fprintf(stderr, "\t   hh:mm\treboot HM-CFG-USB daily at hh:mm\n");
+       fprintf(stderr, "\t-v\t\tverbose mode\n");
+       fprintf(stderr, "\t-V\t\tshow version (" VERSION ")\n");
+
+}
+

 int main(int argc, char **argv)
 {
 int main(int argc, char **argv)
 {

-       //return interactive_server();
-       return socket_server(1234);
+       int port = 1000;
+       char *iface = NULL;
+       int interactive = 0;
+       int flags = 0;
+       char *ep;
+       int opt;
+       
+       reboot_seconds = DEFAULT_REBOOT_SECONDS;
+
+       while((opt = getopt(argc, argv, "DdhiPp:Rr:l:vV")) != -1) {
+               switch (opt) {
+                       case 'D':
+                               debug = 1;
+                               verbose = 1;
+                               break;
+                       case 'd':
+                               flags |= FLAG_DAEMON;
+                               break;
+                       case 'i':
+                               interactive = 1;
+                               break;
+                       case 'P':
+                               flags |= FLAG_PID_FILE;
+                               break;
+                       case 'p':
+                               port = strtoul(optarg, &ep, 10);
+                               if (*ep != '\0') {
+                                       fprintf(stderr, "Can't parse port!\n");
+                                       exit(EXIT_FAILURE);
+                               }
+                               break;
+                       case 'R':
+                               fprintf(stderr, "-R is no longer needed (1s wakeup is default)\n");
+                               break;
+                       case 'r':
+                               reboot_seconds = strtoul(optarg, &ep, 10);
+                               if (*ep != '\0') {
+                                       if (*ep == ':') {
+                                               reboot_at_hour = reboot_seconds;
+                                               ep++;
+                                               reboot_at_minute = strtoul(ep, &ep, 10);
+                                               if (*ep != '\0') {
+                                                       fprintf(stderr, "Can't parse reboot-time!\n");
+                                                       exit(EXIT_FAILURE);
+                                               }
+
+                                               reboot_seconds = 0;
+                                       } else {
+                                               fprintf(stderr, "Can't parse reboot-timeout!\n");
+                                               exit(EXIT_FAILURE);
+                                       }
+                               }
+                               break;
+                       case 'l':
+                               iface = optarg;
+                               break;
+                       case 'v':
+                               verbose = 1;
+                               break;
+                       case 'V':
+                               printf("hmland " VERSION "\n");
+                               printf("Copyright (c) 2013 Michael Gernoth\n\n");
+                               exit(EXIT_SUCCESS);
+                       case 'h':
+                       case ':':
+                       case '?':
+                       default:
+                               hmlan_syntax(argv[0]);
+                               exit(EXIT_FAILURE);
+                               break;
+               }
+       }
+       
+       if (interactive) {
+               return interactive_server(flags);
+       } else {
+               return socket_server(iface, port, flags);
+       }

 }
 }