linux/pulsecounter.c

   1 #include <errno.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <stdbool.h>
   5 #include <time.h>
   6
   7 #include <glib.h>
   8
   9 #include <lib/bluetooth.h>
  10 #include <lib/hci.h>
  11 #include <lib/hci_lib.h>
  12 #include <lib/sdp.h>
  13 #include "lib/uuid.h"
  14
  15 #include "src/shared/util.h"
  16 #include "attrib/att.h"
  17 #include "btio/btio.h"
  18 #include "attrib/gattrib.h"
  19 #include "attrib/gatt.h"
  20
  21 #include "dbstore.h"
  22
  23 GIOChannel *gatt_connect(const char *src, const char *dst,
  24                         const char *dst_type, const char *sec_level,
  25                         int psm, int mtu, BtIOConnect connect_cb,
  26                         GError **gerr);
  27
  28 static char *opt_src = NULL;
  29 static char *opt_dst = NULL;
  30 static char *opt_dst_type = NULL;
  31 static int opt_mtu = 0;
  32 static int opt_psm = 0;
  33 static char *opt_sec_level = NULL;
  34 static char *opt_dbconffile = NULL;
  35
  36 static GMainLoop *event_loop;
  37
  38 static GOptionEntry options[] = {
  39         { "adapter", 'i', 0, G_OPTION_ARG_STRING, &opt_src,
  40                 "Specify local adapter interface", "hciX" },
  41         { "device", 'b', 0, G_OPTION_ARG_STRING, &opt_dst,
  42                 "Specify remote Bluetooth address", "MAC" },
  43         { "addr-type", 't', 0, G_OPTION_ARG_STRING, &opt_dst_type,
  44                 "Set LE address type. Default: public", "[public | random]"},
  45         { "mtu", 'm', 0, G_OPTION_ARG_INT, &opt_mtu,
  46                 "Specify the MTU size", "MTU" },
  47         { "psm", 'p', 0, G_OPTION_ARG_INT, &opt_psm,
  48                 "Specify the PSM for GATT/ATT over BR/EDR", "PSM" },
  49         { "sec-level", 'l', 0, G_OPTION_ARG_STRING, &opt_sec_level,
  50                 "Set security level. Default: low", "[low | medium | high]"},
  51         { "dbconfig", 'c', 0, G_OPTION_ARG_STRING, &opt_dbconffile,
  52                 "Specify file name with database configuration", "cfile"},
  53         { NULL },
  54 };
  55
  56 static gboolean channel_watcher(GIOChannel *chan, GIOCondition cond,
  57                                 gpointer user_data)
  58 {
  59         g_io_channel_shutdown(chan, FALSE, NULL);
  60         g_io_channel_unref(chan);
  61         g_main_loop_quit(event_loop);
  62         g_info("channel_watcher cleared channel and exiting");
  63         return FALSE;
  64 }
  65
  66 static void events_handler(const uint8_t *pdu, uint16_t len, gpointer user_data)
  67 {
  68         GAttrib *attrib = user_data;
  69         uint8_t *opdu;
  70         uint8_t which;
  71         uint16_t handle;
  72
  73         handle = bt_get_le16(&pdu[1]);
  74         which = pdu[3];
  75         if ((pdu[0] == 0x1b) && (handle == 0x0012) && (len == 9) &&
  76             ((which == 1) || (which == 2))) {
  77                 uint32_t val = bt_get_le32(&pdu[5]);
  78                 g_debug("store: \"%hhu,%u\"\n", which, val);
  79                 if (dbstore(which, val))
  80                         g_warning("error storing \"%hhu,%u\"\n", which, val);
  81         } else {
  82                 time_t t;
  83                 int i;
  84                 struct tm tm;
  85                 char buf[64];
  86                 char tstr[64];
  87
  88                 t = time(NULL);
  89                 (void)gmtime_r(&t, &tm);
  90                 (void)strftime(tstr, sizeof(tstr), "%Y-%m-%d %H:%M:%S", &tm);
  91                 for (i = 3; (i < len) && ((i-3) < (sizeof(buf)/3)); i++)
  92                         sprintf(buf+strlen(buf), " %02x ", pdu[i]);
  93                 g_warning("%s ev %02x hd 0x%04x value: %s",
  94                         tstr, pdu[0], handle, buf);
  95         }
  96 }
  97
  98 static void connect_cb(GIOChannel *io, GError *err, gpointer user_data)
  99 {
 100         GAttrib *attrib;
 101         uint16_t mtu;
 102         uint16_t cid;
 103         GError *gerr = NULL;
 104
 105         if (err) {
 106                 g_warning("%s", err->message);
 107                 g_main_loop_quit(event_loop);
 108         }
 109         bt_io_get(io, &gerr, BT_IO_OPT_IMTU, &mtu,
 110                                 BT_IO_OPT_CID, &cid, BT_IO_OPT_INVALID);
 111         if (gerr) {
 112                 g_warning("Can't detect MTU, using default: %s",
 113                                                         gerr->message);
 114                 g_error_free(gerr);
 115                 mtu = ATT_DEFAULT_LE_MTU;
 116         }
 117         if (cid == ATT_CID)
 118                 mtu = ATT_DEFAULT_LE_MTU;
 119         attrib = g_attrib_new(io, mtu, false);
 120         g_attrib_register(attrib, ATT_OP_HANDLE_NOTIFY, GATTRIB_ALL_HANDLES,
 121                                                 events_handler, attrib, NULL);
 122         g_attrib_register(attrib, ATT_OP_HANDLE_IND, GATTRIB_ALL_HANDLES,
 123                                                 events_handler, attrib, NULL);
 124         g_info("connect_cb registered events_handler and exiting\n");
 125 }
 126
 127 int main(int argc, char *argv[])
 128 {
 129         GOptionContext *context;
 130         GError *gerr = NULL;
 131         GIOChannel *chan;
 132         gboolean got_error = FALSE;
 133
 134         g_log_set_handler(NULL, G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL
 135                           | G_LOG_FLAG_RECURSION, g_log_default_handler, NULL);
 136         opt_dst_type = g_strdup("public");
 137         opt_sec_level = g_strdup("low");
 138         opt_dbconffile = g_strdup("/etc/pulsecounter.db");
 139         context = g_option_context_new(NULL);
 140         g_option_context_add_main_entries(context, options, NULL);
 141         if (!g_option_context_parse(context, &argc, &argv, &gerr)) {
 142                 g_error("%s", gerr->message);
 143                 g_clear_error(&gerr);
 144                 got_error = TRUE;
 145                 goto done;
 146         }
 147         if (!opt_dst) {
 148                 g_error("Destination MAC address must be specified");
 149                 got_error = TRUE;
 150                 goto done;
 151         }
 152         if (dbconfig(opt_dbconffile)) {
 153                 g_error("Could not parse database configuration file");
 154                 got_error = TRUE;
 155                 goto done;
 156         }
 157         while (1) {
 158                 chan = gatt_connect(opt_src, opt_dst, opt_dst_type,
 159                         opt_sec_level, opt_psm, opt_mtu, connect_cb, &gerr);
 160                 if (chan) {
 161                         g_io_add_watch(chan, G_IO_HUP, channel_watcher, NULL);
 162                         event_loop = g_main_loop_new(NULL, FALSE);
 163                         g_main_loop_run(event_loop);
 164                         g_main_loop_unref(event_loop);
 165                 } else {
 166                         g_warning("%s", gerr->message);
 167                         g_clear_error(&gerr);
 168                         got_error = TRUE;
 169                 }
 170                 sleep(10);
 171         }
 172
 173 done:
 174         g_option_context_free(context);
 175         g_free(opt_src);
 176         g_free(opt_dst);
 177         g_free(opt_sec_level);
 178         g_free(opt_dbconffile);
 179         if (got_error)
 180                 exit(EXIT_FAILURE);
 181         else
 182                 exit(EXIT_SUCCESS);
 183 }