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Arrange for the authentication request type to be preserved in

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PGconn. Invent a new libpq connection-status function,
PQconnectionUsedPassword() that returns true if the server
demanded a password during authentication, false otherwise.
This may be useful to clients in general, but is immediately
useful to help plug a privilege escalation path in dblink.
Per list discussion and design proposed by Tom Lane.
This commit is contained in:
Joe Conway
2007-07-08 17:11:51 +00:00
parent 8c69d881ce
commit 51bc3dfe4b
6 changed files with 42 additions and 7 deletions
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16
doc/src/sgml/libpq.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.235 2007/03/30 03:19:02 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.236 2007/07/08 17:11:50 joe Exp $ -->
<chapter id="libpq">
<title><application>libpq</application> - C Library</title>
@ -1059,6 +1059,20 @@ SSL *PQgetssl(const PGconn *conn);
</listitem>
</varlistentry>
<varlistentry>
<term><function>PQconnectionUsedPassword</function><indexterm><primary>PQconnectionUsedPassword</></></term>
<listitem>
<para>
Returns true (1) if the connection authentication method
required a password to be supplied. Returns false (0)
otherwise.
<synopsis>
bool PQconnectionUsedPassword(const PGconn *conn);
</synopsis>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>