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From bfaf5b56bb1a416c5e058a9925642098c87e0330 Mon Sep 17 00:00:00 2001
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From: William Brown <firstyear@redhat.com>
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Date: Thu, 30 Nov 2017 14:06:59 +0100
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Subject: [PATCH] Ticket 49474 - sasl allow mechs does not operate correctly
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Bug Description: In a fix to sasl allowed mechs, the logic
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was not properly configured.
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Fix Description: Alter the ids_sasl_supported_mech to be
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clearer and simpler in it's design.
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https://pagure.io/389-ds-base/issue/49474
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Author: wibrown
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Review by: tbordaz (Thank you!)
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Cherry picked from f75cfbce07b79272a7f1a2e387dc232d45c169f5
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---
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ldap/servers/slapd/saslbind.c | 49 ++++++++-----------------------------------
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1 file changed, 9 insertions(+), 40 deletions(-)
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diff --git a/ldap/servers/slapd/saslbind.c b/ldap/servers/slapd/saslbind.c
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index 6734c32a7..67da97148 100644
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--- a/ldap/servers/slapd/saslbind.c
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+++ b/ldap/servers/slapd/saslbind.c
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@@ -835,52 +835,21 @@ ids_sasl_listmech(Slapi_PBlock *pb)
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static int
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ids_sasl_mech_supported(Slapi_PBlock *pb, const char *mech)
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{
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- int i, ret = 0;
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- char **mechs;
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- char **allowed_mechs = NULL;
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- char *dupstr;
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- const char *str;
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- int sasl_result = 0;
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- Connection *pb_conn = NULL;
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-
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- slapi_pblock_get(pb, SLAPI_CONNECTION, &pb_conn);
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- sasl_conn_t *sasl_conn = (sasl_conn_t *)pb_conn->c_sasl_conn;
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slapi_log_err(SLAPI_LOG_TRACE, "ids_sasl_mech_supported", "=>\n");
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- /* sasl_listmech is not thread-safe - caller must lock pb_conn */
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- sasl_result = sasl_listmech(sasl_conn,
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- NULL, /* username */
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- "", ",", "",
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- &str, NULL, NULL);
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- if (sasl_result != SASL_OK) {
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- return 0;
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- }
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-
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- dupstr = slapi_ch_strdup(str);
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- mechs = slapi_str2charray(dupstr, ",");
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- allowed_mechs = config_get_allowed_sasl_mechs_array();
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+ char **allowed_mechs = ids_sasl_listmech(pb);
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- for (i = 0; mechs[i] != NULL; i++) {
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- if (strcasecmp(mech, mechs[i]) == 0) {
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- if (allowed_mechs) {
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- if (charray_inlist(allowed_mechs, (char *)mech) == 0) {
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- ret = 1;
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- }
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- break;
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- } else {
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- ret = 1;
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- break;
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- }
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- }
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+ /* 0 indicates "now allowed" */
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+ int allowed_mech_present = 0;
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+ if (allowed_mechs != NULL) {
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+ /* Returns 1 if present and allowed. */
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+ allowed_mech_present = charray_inlist(allowed_mechs, (char *)mech);
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+ charray_free(allowed_mechs);
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}
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- charray_free(allowed_mechs);
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- charray_free(mechs);
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- slapi_ch_free((void **)&dupstr);
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-
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slapi_log_err(SLAPI_LOG_TRACE, "ids_sasl_mech_supported", "<=\n");
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- return ret;
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+ return allowed_mech_present;
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}
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/*
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@@ -944,7 +913,7 @@ ids_sasl_check_bind(Slapi_PBlock *pb)
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* different error code to SASL_NOMECH. Must be called
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* while holding the pb_conn lock
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*/
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- if (!ids_sasl_mech_supported(pb, mech)) {
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+ if (ids_sasl_mech_supported(pb, mech) == 0) {
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rc = SASL_NOMECH;
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goto sasl_check_result;
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}
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--
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2.13.6
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