From a4512cd3ae7294cf8872fd45e4b4783bddd48ec4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Fri, 15 Jan 2021 12:33:18 +0100
Subject: sasl: Use the nick from the presence if the ad-hoc one is not set

fix #3450
---
 src/irc/irc_client.cpp             |  3 ++-
 tests/end_to_end/scenarios/sasl.py | 31 +++++++++++++++++++++++++++++--
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/src/irc/irc_client.cpp b/src/irc/irc_client.cpp
index 1f2a21b..8a64727 100644
--- a/src/irc/irc_client.cpp
+++ b/src/irc/irc_client.cpp
@@ -1371,7 +1371,8 @@ void IrcClient::on_authenticate(const IrcMessage &)
 
   auto options = Database::get_irc_server_options(this->bridge.get_bare_jid(),
                                                   this->get_hostname());
-  const auto auth_string = '\0' + options.col<Database::Nick>() + '\0' + options.col<Database::SaslPassword>();
+  const auto& nick = !options.col<Database::Nick>().empty() ? options.col<Database::Nick>() : this->get_own_nick();
+  const auto auth_string = '\0' + nick + '\0' + options.col<Database::SaslPassword>();
   const auto base64_auth_string = base64::encode(auth_string);
   this->send_message({"AUTHENTICATE", {base64_auth_string}});
 }
diff --git a/tests/end_to_end/scenarios/sasl.py b/tests/end_to_end/scenarios/sasl.py
index b3cc62d..9f2a27a 100644
--- a/tests/end_to_end/scenarios/sasl.py
+++ b/tests/end_to_end/scenarios/sasl.py
@@ -40,14 +40,41 @@ scenario = (
     send_stanza("<presence from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}/RegisteredUser' type='unavailable' />"),
     expect_stanza("/presence[@type='unavailable']"),
 
-    # Configure an INCORRECT password
+    # Leave the same password, but remove the Nick
     send_stanza("<iq type='set' id='id3' from='{jid_one}/{resource_one}' to='{irc_server_one}'><command xmlns='http://jabber.org/protocol/commands' node='configure' action='execute' /></iq>"),
     expect_stanza("/iq[@type='result']/commands:command[@node='configure'][@sessionid][@status='executing']",
                   "/iq/commands:command/dataform:x[@type='form']/dataform:field[@type='text-private'][@var='sasl_password']",
                   after = save_value("sessionid", extract_attribute("/iq[@type='result']/commands:command[@node='configure']", "sessionid"))),
 
-
     send_stanza("<iq type='set' id='id4' from='{jid_one}/{resource_one}' to='{irc_server_one}'>"
+                "<command xmlns='http://jabber.org/protocol/commands' node='configure' sessionid='{sessionid}' action='complete'>"
+                "<x xmlns='jabber:x:data' type='submit'>"
+                "<field var='sasl_password'><value>P4SSW0RD</value></field>"
+                "<field var='ports'><value>6667</value></field>"
+                "<field var='nick'><value></value></field>"
+                "<field var='tls_ports'><value>6697</value><value>6670</value></field>"
+                "<field var='throttle_limit'><value>9999</value></field>"
+                "</x></command></iq>"),
+    expect_stanza("/iq[@type='result']/commands:command[@node='configure'][@status='completed']/commands:note[@type='info'][text()='Configuration successfully applied.']"),
+
+    # Joining a channel with the associated nick will work, it will use the one from our <presence/>
+    send_stanza("<presence from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}/RegisteredUser' ><x xmlns='http://jabber.org/protocol/muc'/></presence>"),
+    sequences.connection(login="RegisteredUser"),
+    expect_stanza("/presence"),
+    expect_stanza("/message/subject"),
+
+    # Leave the channel and disconnect from the server to try again differently
+    send_stanza("<presence from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}/RegisteredUser' type='unavailable' />"),
+    expect_stanza("/presence[@type='unavailable']"),
+
+    # Configure an INCORRECT password
+    send_stanza("<iq type='set' id='id5' from='{jid_one}/{resource_one}' to='{irc_server_one}'><command xmlns='http://jabber.org/protocol/commands' node='configure' action='execute' /></iq>"),
+    expect_stanza("/iq[@type='result']/commands:command[@node='configure'][@sessionid][@status='executing']",
+                  "/iq/commands:command/dataform:x[@type='form']/dataform:field[@type='text-private'][@var='sasl_password']",
+                  after = save_value("sessionid", extract_attribute("/iq[@type='result']/commands:command[@node='configure']", "sessionid"))),
+
+
+    send_stanza("<iq type='set' id='id6' from='{jid_one}/{resource_one}' to='{irc_server_one}'>"
                 "<command xmlns='http://jabber.org/protocol/commands' node='configure' sessionid='{sessionid}' action='complete'>"
                 "<x xmlns='jabber:x:data' type='submit'>"
                 "<field var='sasl_password'><value>wrong wrong wrong</value></field>"
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