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autofs-5.1.0 - add serialization to sasl init
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From: Ian Kent <ikent@redhat.com>
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Attempt to resolve crash in sasl initialization. We know that the
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initial connection calls to connect to an LDAP server are not
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thread safe and it looks like the sasl code doesn't take that into
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consideration so adding serialization with a mutex is probably a
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sensible thing to do.
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---
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CHANGELOG | 1 +
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modules/lookup_ldap.c | 13 +++++++++++++
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2 files changed, 14 insertions(+)
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--- autofs-5.0.7.orig/CHANGELOG
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+++ autofs-5.0.7/CHANGELOG
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@@ -126,6 +126,7 @@
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- cleanup options in amd_parse.c
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- allow empty value for some map options.
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- allow empty value in macro selectors.
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+- add serialization to sasl init.
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25/07/2012 autofs-5.0.7
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=======================
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--- autofs-5.0.7.orig/modules/lookup_ldap.c
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+++ autofs-5.0.7/modules/lookup_ldap.c
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@@ -578,7 +578,9 @@ static int do_bind(unsigned logopt, LDAP
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ctxt->auth_required, ctxt->sasl_mech);
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if (ctxt->auth_required & LDAP_NEED_AUTH) {
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+ ldapinit_mutex_lock();
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rv = autofs_sasl_bind(logopt, ldap, ctxt);
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+ ldapinit_mutex_unlock();
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debug(logopt, MODPREFIX "autofs_sasl_bind returned %d", rv);
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} else {
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rv = bind_ldap_simple(logopt, ldap, uri, ctxt);
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@@ -922,7 +924,9 @@ static LDAP *do_reconnect(unsigned logop
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#ifdef WITH_SASL
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/* Dispose of the sasl authentication connection and try again. */
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if (!ldap && ctxt->auth_required & LDAP_NEED_AUTH) {
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+ ldapinit_mutex_lock();
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autofs_sasl_dispose(ctxt);
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+ ldapinit_mutex_unlock();
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ldap = connect_to_server(logopt, ctxt->server, ctxt);
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}
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#endif
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@@ -958,7 +962,9 @@ static LDAP *do_reconnect(unsigned logop
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* current server again before trying other servers in the list.
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*/
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if (!ldap && ctxt->auth_required & LDAP_NEED_AUTH) {
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+ ldapinit_mutex_lock();
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autofs_sasl_dispose(ctxt);
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+ ldapinit_mutex_unlock();
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ldap = connect_to_server(logopt, ctxt->uri->uri, ctxt);
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}
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#endif
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@@ -969,7 +975,9 @@ static LDAP *do_reconnect(unsigned logop
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find_server:
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#ifdef WITH_SASL
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+ ldapinit_mutex_lock();
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autofs_sasl_dispose(ctxt);
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+ ldapinit_mutex_unlock();
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#endif
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/* Current server failed, try the rest or dc connection */
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@@ -1742,11 +1750,14 @@ int lookup_init(const char *mapfmt, int
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#ifdef WITH_SASL
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/* Init the sasl callbacks */
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+ ldapinit_mutex_lock();
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if (!autofs_sasl_client_init(LOGOPT_NONE)) {
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error(LOGOPT_ANY, "failed to init sasl client");
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+ ldapinit_mutex_unlock();
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free_context(ctxt);
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return 1;
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}
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+ ldapinit_mutex_unlock();
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#endif
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if (is_amd_format)
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@@ -3678,8 +3689,10 @@ int lookup_done(void *context)
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struct lookup_context *ctxt = (struct lookup_context *) context;
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int rv = close_parse(ctxt->parse);
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#ifdef WITH_SASL
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+ ldapinit_mutex_lock();
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autofs_sasl_dispose(ctxt);
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autofs_sasl_done();
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+ ldapinit_mutex_unlock();
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#endif
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free_context(ctxt);
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return rv;
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