Increase compiler-warning level
[hmcfgusb] / hmland.c
index 3366c8b..35f8192 100644 (file)
--- a/hmland.c
+++ b/hmland.c
@@ -1,6 +1,6 @@
-/* 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) 2013-16 Michael Gernoth <michael@gernoth.net>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdint.h>
+#include <stdarg.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 <sys/stat.h>
+#include <fcntl.h>
+#include <time.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 "util.h"
 
-void hmlan_format_out(uint8_t *buf, int buf_len, void *data)
-{
+#define PID_FILE "/var/run/hmland.pid"
+
+#define POLL_TIMEOUT_MS                250     /* Wake up device/bus at least once every 250ms */
+#define DEFAULT_REBOOT_SECONDS 86400
+#define LAN_READ_CHUNK_SIZE    2048
+/* Don't allow remote clients to consume all of our memory */
+#define LAN_MAX_LINE_LENGTH    4096
+#define LAN_MAX_BUF_LENGTH     1048576
+
+extern char *optarg;
+
+static int impersonate_hmlanif = 0;
+static int debug = 0;
+static int verbose = 0;
+static FILE *logfile = NULL;
+static int reboot_seconds = 0;
+static int reboot_at_hour = -1;
+static int reboot_at_minute = -1;
+static int reboot_set = 0;
+static uint8_t *lan_read_buf = NULL;
+static int lan_read_buflen = 0;
+static char *serial = NULL;
+
+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)
+
+#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)
+{
+       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 void write_log(const char *buf, int len, const char *fmt, ...)
+{
+       va_list ap;
        int i;
 
-       if (buf_len < 1)
+       if ((!logfile) && (!verbose))
                return;
 
-       //FIXME: Buffer here and write to fd_out
-       printf("%c", buf[0]);
+       if (logfile)
+               print_timestamp(logfile);
+       if (verbose)
+               print_timestamp(stdout);
+
+       if (fmt) {
+               if (logfile) {
+                       va_start(ap, fmt);
+                       vfprintf(logfile, fmt, ap);
+                       va_end(ap);
+               }
+               if (verbose) {
+                       va_start(ap, fmt);
+                       vprintf(fmt, ap);
+                       va_end(ap);
+               }
+       }
+
+       if (buf && len) {
+               for (i = 0; i < len; i++) {
+                       if (logfile)
+                               fprintf(logfile, "%c", buf[i]);
+                       if (verbose)
+                               printf("%c", buf[i]);
+               }
+               if (logfile)
+                       fprintf(logfile, "\n");
+               if (verbose)
+                       printf("\n");
+       }
+       if (logfile)
+               fflush(logfile);
+}
+
+static int format_part_out(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, size_t len, int flags)
+{
+       uint8_t *buf_out = *outpos;
+       uint8_t *outend = *outpos + outlen;
+       uint8_t *inend = *inpos + inlen;
+       size_t 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_to_ascii(((**inpos) & 0xf0) >> 4);
+                       *outpos += 1;
+                       **outpos = nibble_to_ascii(((**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 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) {
+               size_t 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;
+       uint16_t version;
+       int fd = *((int*)data);
+       int w;
+
+       if (buf_len < 1)
+               return 1;
+
+       memset(out, 0, sizeof(out));
+       outpos = out;
+       inpos = buf;
+
+       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0);
        switch(buf[0]) {
                case 'H':
-                       buf[5]='L';
-                       buf[6]='A';
-                       buf[7]='N';
-                       len = buf[1];
-                       for (i = 2; i < len + 2; i++) {
-                               printf("%c", buf[i]);
+                       if (impersonate_hmlanif) {
+                               buf[5] = 'L';
+                               buf[6] = 'A';
+                               buf[7] = 'N';
                        }
-                       printf(",%02X%02X,", buf[i],
-                                       buf[i+1]);
-                       i+=2;
-                       len = buf[i]+i+1;
-                       i++;
-                       for (; i < len; i++) {
-                               printf("%c", buf[i]);
+                       format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE);
+                       version = inpos[0] << 8;
+                       version |= inpos[1];
+                       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);
+                       if (version < 0x03c7) {
+                               format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL);
+                       } else {
+                               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)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL);
                        }
-                       printf(",");
-                       len = i+12;
-                       for (; i < len; i++) {
-                               printf("%02X", buf[i]);
-                               switch(len-i) {
-                                       case 10:
-                                       case 7:
-                                       case 3:
-                                               printf(",");
-                                               break;
-                                       default:
-                                               break;
+
+                       if (!reboot_set) {
+                               int new_reboot_seconds;
+
+                               if (version < 0x03c7) {
+                                       new_reboot_seconds = DEFAULT_REBOOT_SECONDS;
+                               } else {
+                                       new_reboot_seconds = 0;
                                }
+
+                               if (verbose && new_reboot_seconds && (reboot_seconds != new_reboot_seconds))
+                                       printf("Rebooting in %u seconds due to old firmware (0.%d)\n",
+                                               new_reboot_seconds, version);
+
+                               reboot_seconds = new_reboot_seconds;
                        }
 
                        break;
                case 'E':
-                       len = 13 + buf[13];
-                       for (i = 0; i < len; i++) {
-                               if (i != 12)
-                                       printf("%02X", buf[1+i]);
-                               switch(i) {
-                                       case 2:
-                                       case 4:
-                                       case 8:
-                                       case 9:
-                                       case 11:
-                                               printf(",");
-                                               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':
-                       len = 14 + buf[14];
-                       for (i = 0; i < len; i++) {
-                               if (i != 13)
-                                       printf("%02X", buf[1+i]);
-                               switch(i) {
-                                       case 3:
-                                       case 5:
-                                       case 9:
-                                       case 10:
-                                       case 12:
-                                               printf(",");
-                                               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':
-                       //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:
-                       for (i = 1; i < buf_len; i++)
-                               printf("%02X", buf[i]);
+                       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;
        }
-       printf("\n");
+
+       /* 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;
+       }
+
+       write_log((char*)out, outpos-out-2, "LAN < ");
+
+       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) {
+                       write_log(curr_rx->rx, curr_rx->len-2, "LAN < ");
+
+                       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;
 }
 
-void hmlan_parse_in(int fd, void *data)
+static int hmlan_parse_one(uint8_t *cmd, int last, void *data)
 {
        struct hmcfgusb_dev *dev = data;
-       unsigned char buf[1024];
-       unsigned char send_buf[0x40]; //FIXME!!!
-       char tmp[3];
-       int i;
+       uint8_t out[0x40]; //FIXME!!!
+       uint8_t *outpos;
+       uint8_t *inpos = cmd;
+
+       outpos = out;
+
+       if (last == 0)
+               return 1;
+
+       write_log((char*)cmd, last,  "LAN > ");
+
+       memset(out, 0, sizeof(out));
+       *outpos++ = *inpos++;
+
+       switch(*cmd) {
+               case 'S':
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
+                       break;
+               case 'Y':
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
+                       break;
+               case '+':
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0);
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
+                       break;
+               default:
+                       parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS);
+                       break;
+       }
+
+       hmcfgusb_send(dev, out, sizeof(out), 1);
+
+       return 1;
+}
+
+static int hmlan_parse_in(int fd, void *data)
+{
+       uint8_t *newbuf;
        int r;
+       int i;
 
-       r = read(fd, buf, sizeof(buf));
+       newbuf = realloc(lan_read_buf, lan_read_buflen + LAN_READ_CHUNK_SIZE);
+       if (!newbuf) {
+               perror("realloc");
+               return 0;
+       }
+       lan_read_buf = newbuf;
+       r = read(fd, lan_read_buf + lan_read_buflen, LAN_READ_CHUNK_SIZE);
        if (r > 0) {
-               int cnt;
-
-               memset(send_buf, 0, sizeof(send_buf));
-               for (i = 0; i < r; i++) {
-                       if ((buf[i] == 0x0a) ||
-                                       (buf[i] == 0x0d)) {
-                               r = i;
-                               break;
-                       }
+               lan_read_buflen += r;
+               if (lan_read_buflen > LAN_MAX_BUF_LENGTH) {
+                       if (verbose)
+                               printf("Our buffer is bigger than %d bytes (%d bytes), closing connection!\n", LAN_MAX_BUF_LENGTH, lan_read_buflen);
+                       return -1;
                }
+               while(lan_read_buflen > 0) {
+                       int found = 0;
 
-               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;
+                       for (i = 0; i < lan_read_buflen; i++) {
+                               if ((lan_read_buf[i] == '\r') || (lan_read_buf[i] == '\n')) {
+                                       if (i > 0)
+                                               hmlan_parse_one(lan_read_buf, i, data);
+                                       memmove(lan_read_buf, lan_read_buf + i + 1, lan_read_buflen - (i + 1));
+                                       lan_read_buflen -= (i + 1);
+                                       found = 1;
+                                       break;
+                               }
+                               if (i > LAN_MAX_LINE_LENGTH) {
+                                       if (verbose)
+                                               printf("Client sent more than %d bytes without newline, closing connection!\n", LAN_MAX_LINE_LENGTH);
+                                       return -1;
                                }
-                               cnt++;
                        }
+                       if (!found)
+                               break;
+                       newbuf = realloc(lan_read_buf, lan_read_buflen);
+                       if (lan_read_buflen && !newbuf) {
+                               perror("realloc");
+                               return 0;
+                       }
+                       lan_read_buf = newbuf;
                }
-
-               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);
-               }
-               hmcfgusb_send(dev, send_buf, 1+(i/2), 1);
        } else if (r < 0) {
-               perror("read");
+               if (errno != ECONNRESET)
+                       perror("read");
+               return r;
+       } else {
+               return 0;
        }
+
+       return 1;
 }
 
-int main(int argc, char **argv)
+static int comm(int fd_in, int fd_out, int master_socket, int flags)
 {
        struct hmcfgusb_dev *dev;
+       uint8_t out[0x40]; //FIXME!!!
        int quit = 0;
 
-       dev = hmcfgusb_init(hmlan_format_out, NULL);
+       hmcfgusb_set_debug(debug);
+
+       dev = hmcfgusb_init(hmlan_format_out, &fd_out, serial);
        if (!dev) {
                fprintf(stderr, "Can't initialize HM-CFG-USB!\n");
-               exit(EXIT_FAILURE);
+               return 0;
        }
 
-       if (!hmcfgusb_add_pfd(dev, STDIN_FILENO, POLLIN)) {
-               fprintf(stderr, "Can't add stdin to pollfd!\n");
-               exit(EXIT_FAILURE);
+       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;
        }
 
-       hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
+       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);
+               return 0;
+       }
+
+       if (master_socket >= 0) {
+               if (!hmcfgusb_add_pfd(dev, master_socket, POLLIN)) {
+                       fprintf(stderr, "Can't add master_socket to pollfd!\n");
+                       hmcfgusb_close(dev);
+                       return 0;
+               }
+       }
+
+       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;
 
-               fd = hmcfgusb_poll(dev, 3600);
+               fd = hmcfgusb_poll(dev, POLL_TIMEOUT_MS);
                if (fd >= 0) {
-                       hmlan_parse_in(fd, dev);
+                       if (fd == master_socket) {
+                               int client;
+
+                               client = accept(master_socket, NULL, 0);
+                               if (client >= 0) {
+                                       shutdown(client, SHUT_RDWR);
+                                       close(client);
+                               }
+                       } else {
+                               if (hmlan_parse_in(fd, dev) <= 0) {
+                                       quit = 1;
+                               }
+                       }
                } 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);
+               }
        }
 
        hmcfgusb_close(dev);
+       return 1;
+}
+
+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;
+       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, "%d", &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);
+       }
+
+       sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+       if (sock == -1) {
+               perror("Can't open socket");
+               return EXIT_FAILURE;
+       }
+
+       n = 1;
+       if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)) == -1) {
+               perror("Can't set socket options");
+               return EXIT_FAILURE;
+       }
+
+       memset(&sin, 0, sizeof(sin));
+       sin.sin_family = AF_INET;
+       sin.sin_port = htons(port);
+       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");
+               return EXIT_FAILURE;
+       }
+
+       if (listen(sock, 1) == -1) {
+               perror("Can't listen on socket");
+               return EXIT_FAILURE;
+       }
+
+       while(1) {
+               struct sockaddr_in csin;
+               socklen_t csinlen;
+               int client;
+               in_addr_t client_addr;
+
+               memset(&csin, 0, sizeof(csin));
+               csinlen = sizeof(csin);
+               client = accept(sock, (struct sockaddr*)&csin, &csinlen);
+               if (client == -1) {
+                       perror("Couldn't accept client");
+                       continue;
+               }
+
+               /* FIXME: getnameinfo... */
+               client_addr = ntohl(csin.sin_addr.s_addr);
+
+               write_log(NULL, 0, "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, flags);
+
+               shutdown(client, SHUT_RDWR);
+               close(client);
+
+               if (lan_read_buf)
+                       free(lan_read_buf);
+               lan_read_buf = NULL;
+               lan_read_buflen = 0;
+
+               write_log(NULL, 0, "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;
+}
+
+static int interactive_server(int flags)
+{
+       if (!comm(STDIN_FILENO, STDOUT_FILENO, -1, flags))
+               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\tpretend to be HM-LAN-IF for compatibility with client-software (previous default)\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-L logfile\tlog network-communication to logfile\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 if FW < 0.967, 0 otherwise)\n", DEFAULT_REBOOT_SECONDS);
+       fprintf(stderr, "\t   hh:mm\treboot HM-CFG-USB daily at hh:mm\n");
+       fprintf(stderr, "\t-S serial\tuse HM-CFG-USB with given serial (for multiple hmland instances)\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 port = 1000;
+       char *iface = NULL;
+       int interactive = 0;
+       int flags = 0;
+       char *ep;
+       int opt;
+       
+       while((opt = getopt(argc, argv, "DdhIiPp:Rr:l:L:S:vV")) != -1) {
+               switch (opt) {
+                       case 'D':
+                               debug = 1;
+                               verbose = 1;
+                               break;
+                       case 'd':
+                               flags |= FLAG_DAEMON;
+                               break;
+                       case 'I':
+                               impersonate_hmlanif = 1;
+                               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);
+                                       }
+                               }
+                               reboot_set = 1;
+                               break;
+                       case 'l':
+                               iface = optarg;
+                               break;
+                       case 'L':
+                               logfile = fopen(optarg, "a");
+                               if (!logfile) {
+                                       perror("fopen(logfile)");
+                                       exit(EXIT_FAILURE);
+                               }
+                               break;
+                       case 'S':
+                               serial = optarg;
+                               break;
+                       case 'v':
+                               verbose = 1;
+                               break;
+                       case 'V':
+                               printf("hmland " VERSION "\n");
+                               printf("Copyright (c) 2013-16 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);
+       }
+}
Impressum, Datenschutz