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navigator: ensure result of strncpy is null-terminated

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Beat Küng
2018-05-07 13:26:12 +02:00
parent 8c638ac88c
commit 258b1ea473
1 changed files with 2 additions and 1 deletions
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3
src/modules/navigator/navigator_main.cpp
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@@ -893,7 +893,8 @@ void Navigator::fake_traffic(const char *callsign, float distance, float directi
tr.heading = traffic_heading; //-atan2(vel_e, vel_n); // Course over ground in radians
tr.hor_velocity = hor_velocity; //sqrtf(vel_e * vel_e + vel_n * vel_n); // The horizontal velocity in m/s
tr.ver_velocity = ver_velocity; //-vel_d; // The vertical velocity in m/s, positive is up
strncpy(&tr.callsign[0], callsign, sizeof(tr.callsign));
strncpy(&tr.callsign[0], callsign, sizeof(tr.callsign) - 1);
tr.callsign[sizeof(tr.callsign) - 1] = 0;
tr.emitter_type = 0; // Type from ADSB_EMITTER_TYPE enum
tr.tslc = 2; // Time since last communication in seconds
tr.flags = transponder_report_s::PX4_ADSB_FLAGS_VALID_COORDS | transponder_report_s::PX4_ADSB_FLAGS_VALID_HEADING |