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Commitef9f359

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Add missing bad-PGconn guards in libpq entry points.
There's a convention that externally-visible libpq functions shouldcheck for a NULL PGconn pointer, and fail gracefully instead ofcrashing. PQflush() and PQisnonblocking() didn't get that memothough. Also add a similar check to PQdefaultSSLKeyPassHook_OpenSSL;while it's not clear that ordinary usage could reach that with anull conn pointer, it's cheap enough to check, so let's be consistent.Daniele Varrazzo and Tom LaneDiscussion:https://postgr.es/m/CA+mi_8Zm_mVVyW1iNFgyMd9Oh0Nv8-F+7Y3-BqwMgTMHuo_h2Q@mail.gmail.com
1 parenta5d2337 commitef9f359

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2 files changed

+5
-1
lines changed

2 files changed

+5
-1
lines changed

‎src/interfaces/libpq/fe-exec.c

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3922,6 +3922,8 @@ PQsetnonblocking(PGconn *conn, int arg)
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int
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PQisnonblocking(constPGconn*conn)
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{
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if (!conn||conn->status==CONNECTION_BAD)
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return false;
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returnpqIsnonblocking(conn);
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}
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@@ -3941,6 +3943,8 @@ PQisthreadsafe(void)
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int
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PQflush(PGconn*conn)
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{
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if (!conn||conn->status==CONNECTION_BAD)
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return-1;
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returnpqFlush(conn);
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}
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‎src/interfaces/libpq/fe-secure-openssl.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1938,7 +1938,7 @@ my_SSL_set_fd(PGconn *conn, int fd)
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int
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PQdefaultSSLKeyPassHook_OpenSSL(char*buf,intsize,PGconn*conn)
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{
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if (conn->sslpassword)
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if (conn&&conn->sslpassword)
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{
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if (strlen(conn->sslpassword)+1>size)
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fprintf(stderr,libpq_gettext("WARNING: sslpassword truncated\n"));

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