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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-06-16 14:45:47 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-06-16 14:45:47 -0400 |
| commit | 5d923eb29bb643e311680bab329363d8a9a9768a (patch) | |
| tree | f5951e2418dadd03f7f1b1d61b0ed3b29d616118 /src | |
| parent | 0dcf68e5a1f1c600bdf29b47cab30a62301a7af1 (diff) | |
| download | postgresql-5d923eb29bb643e311680bab329363d8a9a9768a.tar.gz postgresql-5d923eb29bb643e311680bab329363d8a9a9768a.zip | |
Use snprintf not sprintf in pg_waldump's timestamptz_to_str.
This could only cause an issue if strftime returned a ridiculously
long timezone name, which seems unlikely; and it wouldn't qualify
as a security problem even then, since pg_waldump (nee pg_xlogdump)
is a debug tool not part of the server. But gcc 8 has started issuing
warnings about it, so let's use snprintf and be safe.
Backpatch to 9.3 where this code was added.
Discussion: https://postgr.es/m/21789.1529170195@sss.pgh.pa.us
Diffstat (limited to 'src')
| -rw-r--r-- | src/bin/pg_waldump/compat.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/bin/pg_waldump/compat.c b/src/bin/pg_waldump/compat.c index 6ff9eb7e77b..6d73f557d30 100644 --- a/src/bin/pg_waldump/compat.c +++ b/src/bin/pg_waldump/compat.c @@ -58,7 +58,8 @@ timestamptz_to_str(TimestampTz dt) strftime(ts, sizeof(ts), "%Y-%m-%d %H:%M:%S", ltime); strftime(zone, sizeof(zone), "%Z", ltime); - sprintf(buf, "%s.%06d %s", ts, (int) (dt % USECS_PER_SEC), zone); + snprintf(buf, sizeof(buf), "%s.%06d %s", + ts, (int) (dt % USECS_PER_SEC), zone); return buf; } |