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-rw-r--r--src/irc/capability.hpp9
-rw-r--r--src/irc/irc_client.cpp118
-rw-r--r--src/irc/irc_client.hpp20
-rw-r--r--src/irc/sasl.hpp9
4 files changed, 142 insertions, 14 deletions
diff --git a/src/irc/capability.hpp b/src/irc/capability.hpp
new file mode 100644
index 0000000..55ccb0c
--- /dev/null
+++ b/src/irc/capability.hpp
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <functional>
+
+struct Capability
+{
+ std::function<void()> on_ack;
+ std::function<void()> on_nack;
+};
diff --git a/src/irc/irc_client.cpp b/src/irc/irc_client.cpp
index de38d42..183a9d8 100644
--- a/src/irc/irc_client.cpp
+++ b/src/irc/irc_client.cpp
@@ -5,6 +5,7 @@
#include <irc/irc_client.hpp>
#include <bridge/bridge.hpp>
#include <irc/irc_user.hpp>
+#include <utils/base64.hpp>
#include <logger/logger.hpp>
#include <config/config.hpp>
@@ -81,6 +82,11 @@ static const std::unordered_map<std::string,
{"PONG", {&IrcClient::on_pong, {0, 0}}},
{"KICK", {&IrcClient::on_kick, {3, 0}}},
{"INVITE", {&IrcClient::on_invite, {2, 0}}},
+ {"CAP", {&IrcClient::on_cap, {3, 0}}},
+ {"AUTHENTICATE", {&IrcClient::on_authenticate, {1, 0}}},
+ {"903", {&IrcClient::on_sasl_success, {0, 0}}},
+ {"900", {&IrcClient::on_sasl_login, {3, 0}}},
+
{"401", {&IrcClient::on_generic_error, {2, 0}}},
{"402", {&IrcClient::on_generic_error, {2, 0}}},
@@ -272,18 +278,43 @@ void IrcClient::on_connected()
}
}
- this->send_message({"CAP", {"REQ", "multi-prefix"}});
- this->send_message({"CAP", {"END"}});
+ this->send_gateway_message("Connected to IRC server"s + (this->use_tls ? " (encrypted)": "") + ".");
+
+ this->capabilities["multi-prefix"] = {[]{}, []{}};
#ifdef USE_DATABASE
auto options = Database::get_irc_server_options(this->bridge.get_bare_jid(),
this->get_hostname());
- if (!options.col<Database::Pass>().empty())
+
+ const auto& sasl_password = options.col<Database::SaslPassword>();
+ const auto& server_password = options.col<Database::Pass>();
+
+ if (!server_password.empty())
this->send_pass_command(options.col<Database::Pass>());
+
+ if (!sasl_password.empty())
+ {
+ this->capabilities["sasl"] = {
+ [this]
+ {
+ this->send_message({"AUTHENTICATE", {"PLAIN"}});
+ log_warning("negociating SASL now...");
+ },
+ []
+ {
+ log_warning("SASL not supported by the server, disconnecting.");
+ }
+ };
+ this->sasl_state = SaslState::needed;
+ }
#endif
- this->send_nick_command(this->current_nick);
+ {
+ for (const auto &pair : this->capabilities)
+ this->send_message({ "CAP", {"REQ", pair.first}});
+ }
+ this->send_nick_command(this->current_nick);
#ifdef USE_DATABASE
if (Config::get("realname_customization", "true") == "true")
{
@@ -298,9 +329,6 @@ void IrcClient::on_connected()
#else
this->send_user_command(this->username, this->realname);
#endif
- this->send_gateway_message("Connected to IRC server"s + (this->use_tls ? " (encrypted)": "") + ".");
- this->send_pending_data();
- this->bridge.on_irc_client_connected(this->get_hostname());
}
void IrcClient::on_connection_close(const std::string& error_msg)
@@ -371,12 +399,14 @@ void IrcClient::parse_in_buffer(const size_t)
{
const auto& limits = it->second.second;
// Check that the Message is well formed before actually calling
- // the callback. limits.first is the min number of arguments,
- // second is the max
- if (message.arguments.size() < limits.first ||
- (limits.second > 0 && message.arguments.size() > limits.second))
+ // the callback.
+ const auto args_size = message.arguments.size();
+ const auto min = limits.first;
+ const auto max = limits.second;
+ if (args_size < min ||
+ (max > 0 && args_size > max))
log_warning("Invalid number of arguments for IRC command “", message.command,
- "”: ", message.arguments.size());
+ "”: ", args_size);
else
{
const auto& cb = it->second.first;
@@ -1266,7 +1296,7 @@ void IrcClient::on_unknown_message(const IrcMessage& message)
return ;
std::string from = message.prefix;
std::stringstream ss;
- for (auto it = message.arguments.begin() + 1; it != message.arguments.end(); ++it)
+ for (auto it = std::next(message.arguments.begin()); it != message.arguments.end(); ++it)
{
ss << *it;
if (it + 1 != message.arguments.end())
@@ -1299,3 +1329,65 @@ long int IrcClient::get_throttle_limit() const
return 10;
#endif
}
+
+void IrcClient::on_cap(const IrcMessage &message)
+{
+ const auto& sub_command = message.arguments[1];
+ const auto& cap = message.arguments[2];
+ auto it = this->capabilities.find(cap);
+ if (it == this->capabilities.end())
+ {
+ log_warning("Received a CAP message for something we didn’t ask, or that we already handled.");
+ return;
+ }
+ Capability& capability = it->second;
+ if (sub_command == "ACK")
+ capability.on_ack();
+ else if (sub_command == "NACK")
+ capability.on_nack();
+ this->capabilities.erase(it);
+ this->cap_end();
+}
+
+void IrcClient::on_authenticate(const IrcMessage &)
+{
+ if (this->sasl_state == SaslState::unneeded)
+ {
+ log_warning("Received an AUTHENTICATE command but we don’t intend to authenticate…");
+ return;
+ }
+#ifdef USE_DATABASE
+ 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 base64_auth_string = base64::encode(auth_string);
+ this->send_message({"AUTHENTICATE", {base64_auth_string}});
+#endif
+}
+
+void IrcClient::on_sasl_success(const IrcMessage &)
+{
+ this->sasl_state = SaslState::success;
+ this->cap_end();
+}
+
+void IrcClient::on_sasl_login(const IrcMessage &message)
+{
+ const auto& login = message.arguments[2];
+ std::string text = "Your are now logged in as " + login;
+ if (message.arguments.size() > 3)
+ text = message.arguments[3];
+ this->bridge.send_xmpp_message(this->hostname, message.prefix, text);
+}
+
+void IrcClient::cap_end()
+{
+ if (!this->capabilities.empty())
+ return;
+ // If we are currently authenticating through sasl, finish that before sending CAP END
+ if (this->sasl_state == SaslState::needed)
+ return;
+
+ this->send_message({"CAP", {"END"}});
+ this->bridge.on_irc_client_connected(this->get_hostname());
+}
diff --git a/src/irc/irc_client.hpp b/src/irc/irc_client.hpp
index cfb3d21..e2ad8b9 100644
--- a/src/irc/irc_client.hpp
+++ b/src/irc/irc_client.hpp
@@ -1,8 +1,9 @@
#pragma once
-
#include <irc/irc_message.hpp>
#include <irc/irc_channel.hpp>
+#include <irc/capability.hpp>
+#include <irc/sasl.hpp>
#include <irc/iid.hpp>
#include <bridge/history_limit.hpp>
@@ -232,6 +233,17 @@ public:
*/
void on_invited(const IrcMessage& message);
/**
+ * The IRC server sends a CAP message, as part of capabilities negociation. It could be a ACK,
+ * NACK, or something else
+ */
+ void on_cap(const IrcMessage& message);
+private:
+ void cap_end();
+public:
+ void on_authenticate(const IrcMessage& message);
+ void on_sasl_success(const IrcMessage& message);
+ void on_sasl_login(const IrcMessage& message);
+ /**
* The channel has been completely joined (self presence, topic, all names
* received etc), send the self presence and topic to the XMPP user.
*/
@@ -360,6 +372,12 @@ private:
*/
bool welcomed;
/**
+ * Whether or not we are trying to authenticate using sasl. If this is true we need to wait for a
+ * successful auth
+ */
+ SaslState sasl_state{SaslState::unneeded};
+ std::map<std::string, Capability> capabilities;
+ /**
* See http://www.irc.org/tech_docs/draft-brocklesby-irc-isupport-03.txt section 3.3
* We store the possible chanmodes in this object.
* chanmodes[0] contains modes of type A, [1] of type B etc
diff --git a/src/irc/sasl.hpp b/src/irc/sasl.hpp
new file mode 100644
index 0000000..775bc3f
--- /dev/null
+++ b/src/irc/sasl.hpp
@@ -0,0 +1,9 @@
+#pragma once
+
+enum class SaslState
+{
+ unneeded,
+ needed,
+ failure,
+ success,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 08:33:57 +0000