linux/pulsecounter.c

   1 #include <errno.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <stdbool.h>
   5 #include <time.h>
   6 #include <syslog.h>
   7
   8 #include <glib.h>
   9
  10 #include <lib/bluetooth.h>
  11 #include <lib/hci.h>
  12 #include <lib/hci_lib.h>
  13 #include <lib/sdp.h>
  14 #include "lib/uuid.h"
  15
  16 #include "src/shared/util.h"
  17 #include "attrib/att.h"
  18 #include "btio/btio.h"
  19 #include "attrib/gattrib.h"
  20 #include "attrib/gatt.h"
  21
  22 #include "dbstore.h"
  23
  24 GIOChannel *gatt_connect(const char *src, const char *dst,
  25                         const char *dst_type, const char *sec_level,
  26                         int psm, int mtu, BtIOConnect connect_cb,
  27                         GError **gerr);
  28
  29 static char *opt_src = NULL;
  30 static char *opt_dst = NULL;
  31 static char *opt_dst_type = NULL;
  32 static int opt_mtu = 0;
  33 static int opt_psm = 0;
  34 static char *opt_sec_level = NULL;
  35 static char *opt_dbconffile = NULL;
  36
  37 static GMainLoop *event_loop;
  38
  39 static GOptionEntry options[] = {
  40         { "adapter", 'i', 0, G_OPTION_ARG_STRING, &opt_src,
  41                 "Specify local adapter interface", "hciX" },
  42         { "device", 'b', 0, G_OPTION_ARG_STRING, &opt_dst,
  43                 "Specify remote Bluetooth address", "MAC" },
  44         { "addr-type", 't', 0, G_OPTION_ARG_STRING, &opt_dst_type,
  45                 "Set LE address type. Default: public", "[public | random]"},
  46         { "mtu", 'm', 0, G_OPTION_ARG_INT, &opt_mtu,
  47                 "Specify the MTU size", "MTU" },
  48         { "psm", 'p', 0, G_OPTION_ARG_INT, &opt_psm,
  49                 "Specify the PSM for GATT/ATT over BR/EDR", "PSM" },
  50         { "sec-level", 'l', 0, G_OPTION_ARG_STRING, &opt_sec_level,
  51                 "Set security level. Default: low", "[low | medium | high]"},
  52         { "dbconfig", 'c', 0, G_OPTION_ARG_STRING, &opt_dbconffile,
  53                 "Specify file name with database configuration", "cfile"},
  54         { NULL },
  55 };
  56
  57 void local_log_handler(const gchar *log_domain, GLogLevelFlags log_level,
  58                         const gchar *message, gpointer log_context)
  59 {
  60         int syslog_level;
  61
  62         switch (log_level) {
  63         case G_LOG_LEVEL_CRITICAL:      syslog_level = LOG_CRIT;        break;
  64         case G_LOG_LEVEL_ERROR:         syslog_level = LOG_ERR;         break;
  65         case G_LOG_LEVEL_WARNING:       syslog_level = LOG_WARNING;     break;
  66         case G_LOG_LEVEL_MESSAGE:       syslog_level = LOG_NOTICE;      break;
  67         case G_LOG_LEVEL_INFO:          syslog_level = LOG_INFO;        break;
  68         case G_LOG_LEVEL_DEBUG:         syslog_level = LOG_DEBUG;       break;
  69         default:                        syslog_level = LOG_INFO;
  70         }
  71         if (!log_domain || (log_domain[0] == '\0'))
  72                 syslog(syslog_level, "%s", message);
  73         else
  74                 syslog(syslog_level, "%s: %s", log_domain, message);
  75 }
  76
  77 static gboolean channel_watcher(GIOChannel *chan, GIOCondition cond,
  78                                 gpointer user_data)
  79 {
  80         g_io_channel_shutdown(chan, FALSE, NULL);
  81         g_io_channel_unref(chan);
  82         g_main_loop_quit(event_loop);
  83         g_info("channel_watcher cleared channel and exiting");
  84         return FALSE;
  85 }
  86
  87 static void events_handler(const uint8_t *pdu, uint16_t len, gpointer user_data)
  88 {
  89         GAttrib *attrib = user_data;
  90         uint8_t *opdu;
  91         uint8_t which;
  92         uint16_t handle;
  93
  94         handle = bt_get_le16(&pdu[1]);
  95         which = pdu[3];
  96         if ((pdu[0] == 0x1b) && (handle == 0x0012) && (len == 9) &&
  97             ((which == 1) || (which == 2))) {
  98                 uint32_t val = bt_get_le32(&pdu[5]);
  99                 g_debug("store: \"%hhu,%u\"\n", which, val);
 100                 if (dbstore(which, val))
 101                         g_warning("error storing \"%hhu,%u\"\n", which, val);
 102         } else {
 103                 time_t t;
 104                 int i;
 105                 struct tm tm;
 106                 char buf[64];
 107                 char tstr[64];
 108
 109                 t = time(NULL);
 110                 (void)gmtime_r(&t, &tm);
 111                 (void)strftime(tstr, sizeof(tstr), "%Y-%m-%d %H:%M:%S", &tm);
 112                 for (i = 3; (i < len) && ((i-3) < (sizeof(buf)/3)); i++)
 113                         sprintf(buf+strlen(buf), " %02x ", pdu[i]);
 114                 g_warning("%s ev %02x hd 0x%04x value: %s",
 115                         tstr, pdu[0], handle, buf);
 116         }
 117 }
 118
 119 static void connect_cb(GIOChannel *io, GError *err, gpointer user_data)
 120 {
 121         GAttrib *attrib;
 122         uint16_t mtu;
 123         uint16_t cid;
 124         GError *gerr = NULL;
 125
 126         if (err) {
 127                 g_warning("%s", err->message);
 128                 g_main_loop_quit(event_loop);
 129         }
 130         bt_io_get(io, &gerr, BT_IO_OPT_IMTU, &mtu,
 131                                 BT_IO_OPT_CID, &cid, BT_IO_OPT_INVALID);
 132         if (gerr) {
 133                 g_warning("Can't detect MTU, using default: %s",
 134                                                         gerr->message);
 135                 g_error_free(gerr);
 136                 mtu = ATT_DEFAULT_LE_MTU;
 137         }
 138         if (cid == ATT_CID)
 139                 mtu = ATT_DEFAULT_LE_MTU;
 140         attrib = g_attrib_new(io, mtu, false);
 141         g_attrib_register(attrib, ATT_OP_HANDLE_NOTIFY, GATTRIB_ALL_HANDLES,
 142                                                 events_handler, attrib, NULL);
 143         g_attrib_register(attrib, ATT_OP_HANDLE_IND, GATTRIB_ALL_HANDLES,
 144                                                 events_handler, attrib, NULL);
 145         g_info("connect_cb registered events_handler and exiting\n");
 146 }
 147
 148 int main(int argc, char *argv[])
 149 {
 150         GOptionContext *context;
 151         GError *gerr = NULL;
 152         GIOChannel *chan;
 153         gboolean got_error = FALSE;
 154
 155         g_log_set_handler(NULL, G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL
 156                           | G_LOG_FLAG_RECURSION, local_log_handler, NULL);
 157         opt_dst_type = g_strdup("public");
 158         opt_sec_level = g_strdup("low");
 159         opt_dbconffile = g_strdup("/etc/pulsecounter.db");
 160         context = g_option_context_new(NULL);
 161         g_option_context_add_main_entries(context, options, NULL);
 162         if (!g_option_context_parse(context, &argc, &argv, &gerr)) {
 163                 g_error("%s", gerr->message);
 164                 g_clear_error(&gerr);
 165                 got_error = TRUE;
 166                 goto done;
 167         }
 168         if (!opt_dst) {
 169                 g_error("Destination MAC address must be specified");
 170                 got_error = TRUE;
 171                 goto done;
 172         }
 173         if (dbconfig(opt_dbconffile)) {
 174                 g_error("Could not parse database configuration file");
 175                 got_error = TRUE;
 176                 goto done;
 177         }
 178         while (1) {
 179                 chan = gatt_connect(opt_src, opt_dst, opt_dst_type,
 180                         opt_sec_level, opt_psm, opt_mtu, connect_cb, &gerr);
 181                 if (chan) {
 182                         g_io_add_watch(chan, G_IO_HUP, channel_watcher, NULL);
 183                         event_loop = g_main_loop_new(NULL, FALSE);
 184                         g_main_loop_run(event_loop);
 185                         g_main_loop_unref(event_loop);
 186                 } else {
 187                         g_warning("%s", gerr->message);
 188                         g_clear_error(&gerr);
 189                         got_error = TRUE;
 190                 }
 191                 sleep(10);
 192         }
 193
 194 done:
 195         g_option_context_free(context);
 196         g_free(opt_src);
 197         g_free(opt_dst);
 198         g_free(opt_sec_level);
 199         g_free(opt_dbconffile);
 200         if (got_error)
 201                 exit(EXIT_FAILURE);
 202         else
 203                 exit(EXIT_SUCCESS);
 204 }