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Safeguards for Liquivision import

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I have received one sample log where after parsing a bunch of dives
properly, the sample count hits zero, and after that it is astronomical.
In case of zero, the only data we have is dive date and time of a
duplicate dive that we already parsed with proper dive profile. So
preventing a crash with this hack without properly understanding the
weird file format.

Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
This commit is contained in:
Miika Turkia 2017-10-07 14:45:42 +03:00 • committed by Dirk Hohndel
parent 1b0812a8cb
commit e78f89b0d8
1 changed files with 9 additions and 0 deletions
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9
core/liquivision.c
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@ -278,6 +278,15 @@ static void parse_dives (int log_version, const unsigned char *buf, unsigned int
algorithm = *(buf + ptr++); // 0=ZH-L16C+GF
sample_count = array_uint32_le(buf + ptr);
}
if (sample_count == 0) {
fprintf(stderr, "DEBUG: sample count 0 - terminating parser\n");
break;
}
if (ptr + sample_count * 4 + 4 > buf_size) {
fprintf(stderr, "DEBUG: BOF - terminating parser\n");
break;
}
// we aren't using the start_cns, dive_mode, and algorithm, yet
(void)start_cns;
(void)dive_mode;