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| author | Noah Misch <noah@leadboat.com> | 2015-07-08 20:44:21 -0400 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2015-07-08 20:44:26 -0400 |
| commit | 49008d64507858678becf59f7e7caa75afb04cf2 (patch) | |
| tree | a8ef594aace8c388dbc67b0e2b27ba0d9f748431 /src/bin/psql/command.c | |
| parent | dca992d8b099ab71b14cd4aa09f31506e3903224 (diff) | |
Fix null pointer dereference in "\c" psql command.
The psql crash happened when no current connection existed. (The second
new check is optional given today's undocumented NULL argument handling
in PQhost() etc.) Back-patch to 9.0 (all supported versions).
Diffstat (limited to 'src/bin/psql/command.c')
| -rw-r--r-- | src/bin/psql/command.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c index 89bda00d1ae..b6558431225 100644 --- a/src/bin/psql/command.c +++ b/src/bin/psql/command.c @@ -1591,7 +1591,8 @@ do_connect(char *dbname, char *user, char *host, char *port) * syntax. */ keep_password = - ((strcmp(user, PQuser(o_conn)) == 0) && + (o_conn && + (strcmp(user, PQuser(o_conn)) == 0) && (!host || strcmp(host, PQhost(o_conn)) == 0) && (strcmp(port, PQport(o_conn)) == 0) && !has_connection_string); @@ -1718,7 +1719,8 @@ do_connect(char *dbname, char *user, char *host, char *port) /* Tell the user about the new connection */ if (!pset.quiet) { - if (param_is_newly_set(PQhost(o_conn), PQhost(pset.db)) || + if (!o_conn || + param_is_newly_set(PQhost(o_conn), PQhost(pset.db)) || param_is_newly_set(PQport(o_conn), PQport(pset.db))) { char *host = PQhost(pset.db); |