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Allow full SSL certificate verification (wherein libpq checks its host name

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parameter against server cert's CN field) to succeed in the case where
both host and hostaddr are specified.  As with the existing precedents
for Kerberos, GSSAPI, SSPI, it is the calling application's responsibility
that host and hostaddr match up --- we just use the host name as given.
Per bug #5559 from Christopher Head.

In passing, make the error handling and messages for the no-host-name-given
failure more consistent among these four cases, and correct a lie in the
documentation: we don't attempt to reverse-lookup host from hostaddr
if host is missing.

Back-patch to 8.4 where SSL cert verification was introduced.
This commit is contained in:
Tom Lane
2010-07-14 17:09:45 +00:00
parent 1cc29fe7c6
commit d494e685c5
4 changed files with 38 additions and 33 deletions
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8
src/interfaces/libpq/fe-secure.c
View File

@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-secure.c,v 1.135 2010/07/06 19:19:01 momjian Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-secure.c,v 1.136 2010/07/14 17:09:45 tgl Exp $
*
* NOTES
*
@ -589,16 +589,16 @@ static bool
verify_peer_name_matches_certificate(PGconn *conn)
{
/*
* If told not to verify the peer name, don't do it. Return 0 indicating
* If told not to verify the peer name, don't do it. Return true indicating
* that the verification was successful.
*/
if (strcmp(conn->sslmode, "verify-full") != 0)
return true;
if (conn->pghostaddr)
if (!(conn->pghost && conn->pghost[0] != '\0'))
{
printfPQExpBuffer(&conn->errorMessage,
libpq_gettext("verified SSL connections are only supported when connecting to a host name\n"));
libpq_gettext("host name must be specified for a verified SSL connection\n"));
return false;
}
else