From 60f39a3ae315cef94b47a18a9a51ba549051389c Mon Sep 17 00:00:00 2001
From: defanor <defanor@uberspace.net>
Date: Sat, 29 Feb 2020 18:00:48 +0300
Subject: Check that the initial JID is non-NULL

---
 src/rexmpp.c | 5 +++++
 src/rexmpp.h | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/src/rexmpp.c b/src/rexmpp.c
index 04ec798..c9ec44e 100644
--- a/src/rexmpp.c
+++ b/src/rexmpp.c
@@ -101,6 +101,11 @@ rexmpp_err_t rexmpp_init (rexmpp_t *s,
   s->xml_in_cb = xml_in_cb;
   s->xml_out_cb = xml_out_cb;
 
+  if (jid == NULL) {
+    rexmpp_log(s, LOG_CRIT, "No initial JID is provided.");
+    return REXMPP_E_JID;
+  }
+
   s->xml_parser = xmlCreatePushParserCtxt(&sax, s, "", 0, NULL);
 
   if (s->xml_parser == NULL) {
diff --git a/src/rexmpp.h b/src/rexmpp.h
index 662d540..8c006e9 100644
--- a/src/rexmpp.h
+++ b/src/rexmpp.h
@@ -129,6 +129,8 @@ enum rexmpp_err {
   REXMPP_E_DNS,
   /** XML-related error. */
   REXMPP_E_XML,
+  /** JID-related error. */
+  REXMPP_E_JID,
   /** Failure to allocate memory. */
   REXMPP_E_MALLOC
 };
-- 
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