From 5e6def5bb0b2f4f43116d907c764d8e3527fe770 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Janouch?= <p.janouch@gmail.com>
Date: Sat, 2 Aug 2014 17:56:40 +0200
Subject: [PATCH] kike: implement PRIVMSG to user

---
 src/kike.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/kike.c b/src/kike.c
index d9b8291..bc64180 100644
--- a/src/kike.c
+++ b/src/kike.c
@@ -629,8 +629,11 @@ enum
 	IRC_RPL_ENDOFMOTD             = 376,
 	IRC_RPL_TIME                  = 391,
 
+	IRC_ERR_NOSUCHNICK            = 401,
 	IRC_ERR_NOSUCHSERVER          = 402,
 	IRC_ERR_NOORIGIN              = 409,
+	IRC_ERR_NORECIPIENT           = 411,
+	IRC_ERR_NOTEXTTOSEND          = 412,
 	IRC_ERR_UNKNOWNCOMMAND        = 421,
 	IRC_ERR_NOMOTD                = 422,
 	IRC_ERR_NONICKNAMEGIVEN       = 431,
@@ -660,8 +663,11 @@ static const char *g_default_replies[] =
 	[IRC_RPL_ENDOFMOTD] = ":End of MOTD command",
 	[IRC_RPL_TIME] = "%s :%s",
 
+	[IRC_ERR_NOSUCHNICK] = "%s :No such nick/channel",
 	[IRC_ERR_NOSUCHSERVER] = "%s :No such server",
 	[IRC_ERR_NOORIGIN] = ":No origin specified",
+	[IRC_ERR_NORECIPIENT] = ":No recipient given (%s)",
+	[IRC_ERR_NOTEXTTOSEND] = ":No text to send",
 	[IRC_ERR_UNKNOWNCOMMAND] = "%s: Unknown command",
 	[IRC_ERR_NOMOTD] = ":MOTD File is missing",
 	[IRC_ERR_NONICKNAMEGIVEN] = ":No nickname given",
@@ -932,6 +938,30 @@ irc_handle_version (const struct irc_message *msg, struct client *c)
 			c->ctx->server_name, PROGRAM_NAME " " PROGRAM_VERSION);
 }
 
+static void
+irc_handle_privmsg (const struct irc_message *msg, struct client *c)
+{
+	if (msg->params.len < 1)
+		irc_send_reply (c, IRC_ERR_NORECIPIENT, msg->command);
+	else if (msg->params.len < 2 || !*msg->params.vector[1])
+		irc_send_reply (c, IRC_ERR_NOTEXTTOSEND);
+	else
+	{
+		const char *target = msg->params.vector[0];
+		const char *text   = msg->params.vector[1];
+		struct client *target_c = str_map_find (&c->ctx->users, target);
+		if (!target_c)
+		{
+			irc_send_reply (c, IRC_ERR_NOSUCHNICK, target);
+			return;
+		}
+
+		// TODO: channels
+		irc_send (target_c, ":%s!%s@%s PRIVMSG %s :%s",
+			c->nickname, c->username, c->hostname, target, text);
+	}
+}
+
 // -----------------------------------------------------------------------------
 
 struct irc_command
@@ -959,6 +989,8 @@ irc_register_handlers (struct server_context *ctx)
 		{ "QUIT",    false, irc_handle_quit    },
 		{ "TIME",    true,  irc_handle_time    },
 		{ "VERSION", true,  irc_handle_version },
+
+		{ "PRIVMSG", true,  irc_handle_privmsg },
 	};
 
 	for (size_t i = 0; i < N_ELEMENTS (message_handlers); i++)