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sdk:scripts:scan-wlan [2015/05/05 15:04] |
sdk:scripts:scan-wlan [2015/05/05 15:04] (current) |
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| + | ====== SDK Script scan-wlan.are ====== | ||
| + | <code c scan-wlan.are> | ||
| + | /* DESC: This script can be used to switch the WLAN client network according to availability | ||
| + | * Copyright (C) 2013 NetModule AG, Switzerland | ||
| + | */ | ||
| + | |||
| + | IFC = "WLAN1"; | ||
| + | NETWORK = ""; | ||
| + | MIN_SIGNAL = -90; | ||
| + | |||
| + | /* ATTENTION: Scanning for WLAN networks will tear down any running access-point */ | ||
| + | nets = nb_scan_networks(IFC); | ||
| + | nr_nets = struct_get(nets, "NETWORK_COUNT"); | ||
| + | |||
| + | if (is_void(nr_nets) || nr_nets < 1) { | ||
| + | nb_syslog("no networks found on %s", IFC); | ||
| + | exit(0); | ||
| + | } | ||
| + | |||
| + | /* lookup WLAN networks */ | ||
| + | for (i = 1; i <= nr_nets; i++) { | ||
| + | k = sprintf("NETWORK%d_SSID", i); | ||
| + | ssid = struct_get(nets, k); | ||
| + | k = sprintf("NETWORK%d_SIGNAL", i); | ||
| + | signal = (int)struct_get(nets, k); | ||
| + | |||
| + | if (strlen(ssid) == 0) continue; | ||
| + | |||
| + | nb_syslog("detected %s network '%s' (signal %d)", IFC, ssid, signal); | ||
| + | |||
| + | if ((ssid == "home-network" || ssid == "office-network") && signal > MIN_SIGNAL) { | ||
| + | NETWORK = ssid; | ||
| + | break; | ||
| + | } | ||
| + | } | ||
| + | |||
| + | if (NETWORK != "") { | ||
| + | nb_syslog("activating %s network '%s'", IFC, NETWORK); | ||
| + | cfg = sprintf("wlan.0.client.0.ssid=%s", NETWORK); | ||
| + | nb_config_set(cfg); | ||
| + | } else { | ||
| + | nb_syslog("no known networks found on %s", IFC); | ||
| + | } | ||
| + | |||
| + | exit(0); | ||
| + | |||
| + | </code> | ||