main.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License.
   5  *
   6  *   This program is distributed in the hope that it will be useful,
   7  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *   GNU General Public License for more details.
  10  *
  11  *   You should have received a copy of the GNU General Public License
  12  *   along with this program; if not, write to the Free Software
  13  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  14  *
  15  *   Copyright (C) 2020 embedd.ch
  16  *   Copyright (C) 2020 Felix Fietkau <nbd@nbd.name>
  17  *   Copyright (C) 2020 John Crispin <john@phrozen.org>
  18  */
  19
  20 #include <unistd.h>
  21 #include <stdarg.h>
  22 #include <syslog.h>
  23
  24 #include "usteer.h"
  25 #include "event.h"
  26
  27 struct ubus_context *ubus_ctx;
  28 struct usteer_config config = {};
  29 struct blob_attr *host_info_blob;
  30 uint64_t current_time;
  31
  32 LIST_HEAD(node_handlers);
  33
  34 const char * const event_types[__EVENT_TYPE_MAX] = {
  35         [EVENT_TYPE_PROBE] = "probe",
  36         [EVENT_TYPE_AUTH] = "auth",
  37         [EVENT_TYPE_ASSOC] = "assoc",
  38 };
  39
  40 void log_msg(char *msg)
  41 {
  42         if (config.syslog)
  43                 syslog(LOG_INFO, "%s\n", msg);
  44         else
  45                 fprintf(stderr, "%s\n", msg);
  46 }
  47
  48 void debug_msg(int level, const char *func, int line, const char *format, ...)
  49 {
  50         va_list ap;
  51
  52         if (config.debug_level < level)
  53                 return;
  54
  55         if (!config.syslog)
  56                 fprintf(stderr, "[%s:%d] ", func, line);
  57
  58         va_start(ap, format);
  59         if (config.syslog)
  60                 vsyslog(level >= MSG_DEBUG ? LOG_DEBUG : LOG_INFO, format, ap);
  61         else
  62                 vfprintf(stderr, format, ap);
  63         va_end(ap);
  64
  65 }
  66
  67 void debug_msg_cont(int level, const char *format, ...)
  68 {
  69         va_list ap;
  70
  71         if (config.debug_level < level)
  72                 return;
  73
  74         va_start(ap, format);
  75         vfprintf(stderr, format, ap);
  76         va_end(ap);
  77 }
  78
  79 void usteer_init_defaults(void)
  80 {
  81         memset(&config, 0, sizeof(config));
  82
  83         config.sta_block_timeout = 30 * 1000;
  84         config.local_sta_timeout = 120 * 1000;
  85         config.local_sta_update = 1 * 1000;
  86         config.max_retry_band = 5;
  87         config.seen_policy_timeout = 30 * 1000;
  88         config.band_steering_threshold = 5;
  89         config.load_balancing_threshold = 5;
  90         config.remote_update_interval = 1000;
  91         config.initial_connect_delay = 0;
  92         config.remote_node_timeout = 120 * 1000;
  93
  94         config.roam_kick_delay = 100;
  95         config.roam_scan_tries = 3;
  96         config.roam_scan_interval = 10 * 1000;
  97         config.roam_trigger_interval = 60 * 1000;
  98
  99         config.load_kick_enabled = false;
 100         config.load_kick_threshold = 75;
 101         config.load_kick_delay = 10 * 1000;
 102         config.load_kick_min_clients = 10;
 103         config.load_kick_reason_code = 5; /* WLAN_REASON_DISASSOC_AP_BUSY */
 104
 105         config.debug_level = MSG_FATAL;
 106 }
 107
 108 void usteer_update_time(void)
 109 {
 110         struct timespec ts;
 111
 112         clock_gettime(CLOCK_MONOTONIC, &ts);
 113         current_time = (uint64_t) ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
 114 }
 115
 116 static int usage(const char *prog)
 117 {
 118         fprintf(stderr, "Usage: %s [options]\n"
 119                 "Options:\n"
 120                 " -v:           Increase debug level (repeat for more messages):\n"
 121                 "               1: info messages\n"
 122                 "               2: debug messages\n"
 123                 "               3: verbose debug messages\n"
 124                 "               4: include network messages\n"
 125                 "               5: include extra testing messages\n"
 126                 " -i <name>:    Connect to other instances on interface <name>\n"
 127                 " -s:           Output log messages via syslog instead of stderr\n"
 128                 "\n", prog);
 129         return 1;
 130 }
 131
 132 int main(int argc, char **argv)
 133 {
 134         int ch;
 135
 136         usteer_init_defaults();
 137
 138         while ((ch = getopt(argc, argv, "i:sv")) != -1) {
 139                 switch(ch) {
 140                 case 'v':
 141                         config.debug_level++;
 142                         break;
 143                 case 's':
 144                         config.syslog = true;
 145                         break;
 146                 case 'i':
 147                         usteer_interface_add(optarg);
 148                         break;
 149                 default:
 150                         return usage(argv[0]);
 151                 }
 152         }
 153
 154         openlog("usteer", 0, LOG_USER);
 155
 156         config_set_event_log_types(NULL);
 157         usteer_update_time();
 158         uloop_init();
 159
 160         ubus_ctx = ubus_connect(NULL);
 161         if (!ubus_ctx) {
 162                 fprintf(stderr, "Failed to connect to ubus\n");
 163                 return -1;
 164         }
 165
 166         ubus_add_uloop(ubus_ctx);
 167         usteer_ubus_init(ubus_ctx);
 168         usteer_interface_init();
 169         usteer_local_nodes_init(ubus_ctx);
 170         uloop_run();
 171
 172         uloop_done();
 173         return 0;
 174 }