Allow pg_dumpall to dump roles w/o user passwords
Add new option --no-role-passwords which dumps roles without passwords. Since we don’t need passwords, we choose to use pg_roles in preference to pg_authid since access may be restricted for security reasons in some configrations. Robins Tharakan and Simon Riggs
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@ -332,6 +332,19 @@ PostgreSQL documentation
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--no-role-passwords</option></term>
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<listitem>
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<para>
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Do not dump passwords for roles. When restored, roles will have a NULL
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password and authentication will always fail until the password is reset.
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Since password values aren't needed when this option is specified we
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use the catalog view pg_roles in preference to pg_authid, since access
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to pg_authid may be restricted by security policy.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--no-security-labels</option></term>
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<listitem>
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@ -74,8 +74,13 @@ static int no_tablespaces = 0;
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static int use_setsessauth = 0;
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static int no_security_labels = 0;
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static int no_unlogged_table_data = 0;
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static int no_role_passwords = 0;
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static int server_version;
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static char role_catalog[10];
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#define PG_AUTHID "pg_authid"
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#define PG_ROLES "pg_roles "
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static FILE *OPF;
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static char *filename = NULL;
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@ -123,6 +128,7 @@ main(int argc, char *argv[])
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{"use-set-session-authorization", no_argument, &use_setsessauth, 1},
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{"no-security-labels", no_argument, &no_security_labels, 1},
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{"no-unlogged-table-data", no_argument, &no_unlogged_table_data, 1},
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{"no-role-passwords", no_argument, &no_role_passwords, 1},
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{NULL, 0, NULL, 0}
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};
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@ -342,6 +348,25 @@ main(int argc, char *argv[])
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exit_nicely(1);
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}
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if (no_role_passwords && binary_upgrade)
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{
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fprintf(stderr, _("%s: options --no-role-passwords and --binary-upgrade cannot be used together\n"),
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progname);
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fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
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progname);
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exit_nicely(1);
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}
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/*
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* If password values are not required in the dump, switch to
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* using pg_roles which is equally useful, just more likely
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* to have unrestricted access than pg_authid.
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*/
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if (no_role_passwords)
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sprintf(role_catalog, "%s", PG_ROLES);
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else
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sprintf(role_catalog, "%s", PG_AUTHID);
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/* Add long options to the pg_dump argument list */
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if (binary_upgrade)
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appendPQExpBufferStr(pgdumpopts, " --binary-upgrade");
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@ -563,6 +588,7 @@ help(void)
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printf(_(" --no-security-labels do not dump security label assignments\n"));
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printf(_(" --no-tablespaces do not dump tablespace assignments\n"));
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printf(_(" --no-unlogged-table-data do not dump unlogged table data\n"));
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printf(_(" --no-role-passwords do not dump passwords for roles\n"));
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printf(_(" --quote-all-identifiers quote all identifiers, even if not key words\n"));
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printf(_(" --use-set-session-authorization\n"
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" use SET SESSION AUTHORIZATION commands instead of\n"
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@ -590,23 +616,24 @@ help(void)
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static void
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dropRoles(PGconn *conn)
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{
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PQExpBuffer buf = createPQExpBuffer();
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PGresult *res;
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int i_rolname;
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int i;
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if (server_version >= 90600)
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT rolname "
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"FROM pg_authid "
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"FROM %s "
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"WHERE rolname !~ '^pg_' "
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"ORDER BY 1");
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"ORDER BY 1", role_catalog);
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else if (server_version >= 80100)
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT rolname "
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"FROM pg_authid "
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"ORDER BY 1");
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"FROM %s "
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"ORDER BY 1", role_catalog);
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else
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT usename as rolname "
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"FROM pg_shadow "
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"UNION "
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@ -614,6 +641,8 @@ dropRoles(PGconn *conn)
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"FROM pg_group "
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"ORDER BY 1");
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res = executeQuery(conn, buf->data);
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i_rolname = PQfnumber(res, "rolname");
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if (PQntuples(res) > 0)
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@ -631,6 +660,7 @@ dropRoles(PGconn *conn)
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}
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PQclear(res);
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destroyPQExpBuffer(buf);
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fprintf(OPF, "\n\n");
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}
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@ -666,21 +696,21 @@ dumpRoles(PGconn *conn)
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"rolcreaterole, rolcreatedb, "
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"rolcanlogin, rolconnlimit, rolpassword, "
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"rolvaliduntil, rolreplication, rolbypassrls, "
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"pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment, "
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"pg_catalog.shobj_description(oid, '%s') as rolcomment, "
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"rolname = current_user AS is_current_user "
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"FROM pg_authid "
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"FROM %s "
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"WHERE rolname !~ '^pg_' "
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"ORDER BY 2");
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"ORDER BY 2", role_catalog, role_catalog);
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else if (server_version >= 90500)
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printfPQExpBuffer(buf,
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"SELECT oid, rolname, rolsuper, rolinherit, "
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"rolcreaterole, rolcreatedb, "
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"rolcanlogin, rolconnlimit, rolpassword, "
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"rolvaliduntil, rolreplication, rolbypassrls, "
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"pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment, "
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"pg_catalog.shobj_description(oid, '%s') as rolcomment, "
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"rolname = current_user AS is_current_user "
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"FROM pg_authid "
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"ORDER BY 2");
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"FROM %s "
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"ORDER BY 2", role_catalog, role_catalog);
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else if (server_version >= 90100)
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printfPQExpBuffer(buf,
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"SELECT oid, rolname, rolsuper, rolinherit, "
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@ -688,10 +718,10 @@ dumpRoles(PGconn *conn)
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"rolcanlogin, rolconnlimit, rolpassword, "
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"rolvaliduntil, rolreplication, "
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"false as rolbypassrls, "
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"pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment, "
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"pg_catalog.shobj_description(oid, '%s') as rolcomment, "
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"rolname = current_user AS is_current_user "
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"FROM pg_authid "
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"ORDER BY 2");
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"FROM %s "
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"ORDER BY 2", role_catalog, role_catalog);
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else if (server_version >= 80200)
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printfPQExpBuffer(buf,
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"SELECT oid, rolname, rolsuper, rolinherit, "
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@ -699,10 +729,10 @@ dumpRoles(PGconn *conn)
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"rolcanlogin, rolconnlimit, rolpassword, "
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"rolvaliduntil, false as rolreplication, "
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"false as rolbypassrls, "
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"pg_catalog.shobj_description(oid, 'pg_authid') as rolcomment, "
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"pg_catalog.shobj_description(oid, '%s') as rolcomment, "
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"rolname = current_user AS is_current_user "
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"FROM pg_authid "
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"ORDER BY 2");
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"FROM %s "
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"ORDER BY 2", role_catalog, role_catalog);
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else if (server_version >= 80100)
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printfPQExpBuffer(buf,
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"SELECT oid, rolname, rolsuper, rolinherit, "
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@ -712,8 +742,8 @@ dumpRoles(PGconn *conn)
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"false as rolbypassrls, "
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"null as rolcomment, "
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"rolname = current_user AS is_current_user "
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"FROM pg_authid "
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"ORDER BY 2");
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"FROM %s "
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"ORDER BY 2", role_catalog);
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else
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printfPQExpBuffer(buf,
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"SELECT 0 as oid, usename as rolname, "
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@ -846,7 +876,8 @@ dumpRoles(PGconn *conn)
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appendPQExpBuffer(buf, " CONNECTION LIMIT %s",
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PQgetvalue(res, i, i_rolconnlimit));
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if (!PQgetisnull(res, i, i_rolpassword))
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if (!PQgetisnull(res, i, i_rolpassword) && !no_role_passwords)
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{
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appendPQExpBufferStr(buf, " PASSWORD ");
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appendStringLiteralConn(buf, PQgetvalue(res, i, i_rolpassword), conn);
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@ -897,19 +928,21 @@ dumpRoles(PGconn *conn)
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static void
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dumpRoleMembership(PGconn *conn)
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{
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PQExpBuffer buf = createPQExpBuffer();
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PGresult *res;
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int i;
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res = executeQuery(conn, "SELECT ur.rolname AS roleid, "
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printfPQExpBuffer(buf, "SELECT ur.rolname AS roleid, "
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"um.rolname AS member, "
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"a.admin_option, "
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"ug.rolname AS grantor "
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"FROM pg_auth_members a "
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"LEFT JOIN pg_authid ur on ur.oid = a.roleid "
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"LEFT JOIN pg_authid um on um.oid = a.member "
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"LEFT JOIN pg_authid ug on ug.oid = a.grantor "
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"LEFT JOIN %s ur on ur.oid = a.roleid "
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"LEFT JOIN %s um on um.oid = a.member "
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"LEFT JOIN %s ug on ug.oid = a.grantor "
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"WHERE NOT (ur.rolname ~ '^pg_' AND um.rolname ~ '^pg_')"
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"ORDER BY 1,2,3");
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"ORDER BY 1,2,3", role_catalog, role_catalog, role_catalog);
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res = executeQuery(conn, buf->data);
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if (PQntuples(res) > 0)
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fprintf(OPF, "--\n-- Role memberships\n--\n\n");
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@ -939,6 +972,7 @@ dumpRoleMembership(PGconn *conn)
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}
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PQclear(res);
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destroyPQExpBuffer(buf);
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fprintf(OPF, "\n\n");
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}
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@ -1298,9 +1332,9 @@ dumpCreateDB(PGconn *conn)
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* databases.
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*/
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if (server_version >= 90600)
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT datname, "
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"coalesce(rolname, (select rolname from pg_authid where oid=(select datdba from pg_database where datname='template0'))), "
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"coalesce(rolname, (select rolname from %s where oid=(select datdba from pg_database where datname='template0'))), "
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"pg_encoding_to_char(d.encoding), "
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"datcollate, datctype, datfrozenxid, datminmxid, "
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"datistemplate, "
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@ -1314,43 +1348,43 @@ dumpCreateDB(PGconn *conn)
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"AS rdatacl, "
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"datconnlimit, "
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"(SELECT spcname FROM pg_tablespace t WHERE t.oid = d.dattablespace) AS dattablespace "
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"FROM pg_database d LEFT JOIN pg_authid u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1");
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"FROM pg_database d LEFT JOIN %s u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1", role_catalog, role_catalog);
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else if (server_version >= 90300)
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT datname, "
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"coalesce(rolname, (select rolname from pg_authid where oid=(select datdba from pg_database where datname='template0'))), "
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"coalesce(rolname, (select rolname from %s where oid=(select datdba from pg_database where datname='template0'))), "
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"pg_encoding_to_char(d.encoding), "
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"datcollate, datctype, datfrozenxid, datminmxid, "
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"datistemplate, datacl, '' as rdatacl, "
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"datconnlimit, "
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"(SELECT spcname FROM pg_tablespace t WHERE t.oid = d.dattablespace) AS dattablespace "
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"FROM pg_database d LEFT JOIN pg_authid u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1");
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"FROM pg_database d LEFT JOIN %s u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1", role_catalog, role_catalog);
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else if (server_version >= 80400)
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT datname, "
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"coalesce(rolname, (select rolname from pg_authid where oid=(select datdba from pg_database where datname='template0'))), "
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"coalesce(rolname, (select rolname from %s where oid=(select datdba from pg_database where datname='template0'))), "
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"pg_encoding_to_char(d.encoding), "
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"datcollate, datctype, datfrozenxid, 0 AS datminmxid, "
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"datistemplate, datacl, '' as rdatacl, "
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"datconnlimit, "
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"(SELECT spcname FROM pg_tablespace t WHERE t.oid = d.dattablespace) AS dattablespace "
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"FROM pg_database d LEFT JOIN pg_authid u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1");
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"FROM pg_database d LEFT JOIN %s u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1", role_catalog, role_catalog);
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else if (server_version >= 80100)
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT datname, "
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"coalesce(rolname, (select rolname from pg_authid where oid=(select datdba from pg_database where datname='template0'))), "
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"coalesce(rolname, (select rolname from %s where oid=(select datdba from pg_database where datname='template0'))), "
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"pg_encoding_to_char(d.encoding), "
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"null::text AS datcollate, null::text AS datctype, datfrozenxid, 0 AS datminmxid, "
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"datistemplate, datacl, '' as rdatacl, "
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"datconnlimit, "
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"(SELECT spcname FROM pg_tablespace t WHERE t.oid = d.dattablespace) AS dattablespace "
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"FROM pg_database d LEFT JOIN pg_authid u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1");
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"FROM pg_database d LEFT JOIN %s u ON (datdba = u.oid) "
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"WHERE datallowconn ORDER BY 1", role_catalog, role_catalog);
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else
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res = executeQuery(conn,
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printfPQExpBuffer(buf,
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"SELECT datname, "
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"coalesce(usename, (select usename from pg_shadow where usesysid=(select datdba from pg_database where datname='template0'))), "
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"pg_encoding_to_char(d.encoding), "
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"FROM pg_database d LEFT JOIN pg_shadow u ON (datdba = usesysid) "
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"WHERE datallowconn ORDER BY 1");
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res = executeQuery(conn, buf->data);
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for (i = 0; i < PQntuples(res); i++)
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{
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char *dbname = PQgetvalue(res, i, 0);
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@ -1557,9 +1593,9 @@ dumpUserConfig(PGconn *conn, const char *username)
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if (server_version >= 90000)
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printfPQExpBuffer(buf, "SELECT setconfig[%d] FROM pg_db_role_setting WHERE "
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"setdatabase = 0 AND setrole = "
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"(SELECT oid FROM pg_authid WHERE rolname = ", count);
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"(SELECT oid FROM %s WHERE rolname = ", count, role_catalog);
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else if (server_version >= 80100)
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printfPQExpBuffer(buf, "SELECT rolconfig[%d] FROM pg_authid WHERE rolname = ", count);
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printfPQExpBuffer(buf, "SELECT rolconfig[%d] FROM %s WHERE rolname = ", count, role_catalog);
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else
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printfPQExpBuffer(buf, "SELECT useconfig[%d] FROM pg_shadow WHERE usename = ", count);
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appendStringLiteralConn(buf, username, conn);
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@ -1597,8 +1633,8 @@ dumpDbRoleConfig(PGconn *conn)
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int i;
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printfPQExpBuffer(buf, "SELECT rolname, datname, unnest(setconfig) "
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"FROM pg_db_role_setting, pg_authid, pg_database "
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"WHERE setrole = pg_authid.oid AND setdatabase = pg_database.oid");
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"FROM pg_db_role_setting, %s u, pg_database "
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"WHERE setrole = u.oid AND setdatabase = pg_database.oid", role_catalog);
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res = executeQuery(conn, buf->data);
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if (PQntuples(res) > 0)
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