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| author | Eric S. Raymond <esr@thyrsus.com> | 2010-01-28 01:35:44 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2010-01-28 01:35:44 +0000 |
| commit | 0617aa7b5166549c2d18457b1c54e3e281d5f7cf (patch) | |
| tree | 5dea5f8dc90ba3eda8e7b77537985c47b144b61b /driver_aivdm.c | |
| parent | d12b49d94143f05c8754ac9db2e0b4364ba363ac (diff) | |
| download | gpsd-0617aa7b5166549c2d18457b1c54e3e281d5f7cf.tar.gz | |
More message-length chexks for AIS.
Diffstat (limited to 'driver_aivdm.c')
| -rw-r--r-- | driver_aivdm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/driver_aivdm.c b/driver_aivdm.c index 959589c4..c0afc808 100644 --- a/driver_aivdm.c +++ b/driver_aivdm.c @@ -155,6 +155,12 @@ bool aivdm_decode(const char *buf, size_t buflen, case 1: /* Position Report */ case 2: case 3: + if (ais_context->bitlen != 168) { + gpsd_report(LOG_ERROR, "AIVDM message type %d size not 168 bits (%zd).\n", + ais->type, + ais_context->bitlen); + break; + } ais->type1.status = UBITS(38, 4); ais->type1.turn = SBITS(42, 8); ais->type1.speed = UBITS(50, 10); @@ -182,6 +188,11 @@ bool aivdm_decode(const char *buf, size_t buflen, break; case 4: /* Base Station Report */ case 11: /* UTC/Date Response */ + if (ais_context->bitlen != 168) { + gpsd_report(LOG_ERROR, "AIVDM message type 4 size not 168 bits (%zd).\n", + ais_context->bitlen); + break; + } ais->type4.year = UBITS(38, 14); ais->type4.month = UBITS(52, 4); ais->type4.day = UBITS(56, 5); |