From ab651284a26c1a5dd30c85cf792399df5ccd7ac2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Janouch?= <p.janouch@gmail.com>
Date: Sun, 13 Jul 2014 04:59:22 +0200
Subject: [PATCH] Initialize the server name

---
 src/kike.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/src/kike.c b/src/kike.c
index 0ce7092..fdb87bc 100644
--- a/src/kike.c
+++ b/src/kike.c
@@ -314,6 +314,7 @@ struct server_context
 	struct connection *clients;         ///< Client connections
 	SSL_CTX *ssl_ctx;                   ///< SSL context
 
+	char *server_name;                  ///< Our server name
 	struct str_map users;               ///< Maps nicknames to connections
 	struct str_map channels;            ///< Maps channel names to data
 
@@ -332,6 +333,7 @@ server_context_init (struct server_context *self)
 	self->listen_fd = -1;
 	self->clients = NULL;
 
+	self->server_name = NULL;
 	str_map_init (&self->users);
 	// TODO: set channel_free() as the free function?
 	str_map_init (&self->channels);
@@ -360,6 +362,7 @@ server_context_free (struct server_context *self)
 		free (link);
 	}
 
+	free (self->server_name);
 	str_map_free (&self->users);
 	str_map_free (&self->channels);
 	poller_free (&self->poller);
@@ -783,6 +786,45 @@ error_ssl_1:
 	return false;
 }
 
+static bool
+irc_initialize_server_name (struct server_context *ctx, struct error **e)
+{
+	enum validation_result res;
+	const char *server_name = str_map_find (&ctx->config, "server_name");
+	if (server_name)
+	{
+		res = irc_validate_hostname (server_name);
+		if (res != VALIDATION_OK)
+		{
+			error_set (e, NETWORK_ERROR, NETWORK_ERROR_INVALID_CONFIGURATION,
+				"invalid configuration value for `%s': %s", "server_name",
+				irc_validate_to_str (res));
+			return false;
+		}
+		ctx->server_name = xstrdup (server_name);
+	}
+	else
+	{
+		char hostname[HOST_NAME_MAX];
+		if (gethostname (hostname, sizeof hostname))
+		{
+			error_set (e, NETWORK_ERROR, NETWORK_ERROR_INVALID_CONFIGURATION,
+				"%s: %s", "getting the hostname failed", strerror (errno));
+			return false;
+		}
+		res = irc_validate_hostname (hostname);
+		if (res != VALIDATION_OK)
+		{
+			error_set (e, NETWORK_ERROR, NETWORK_ERROR_INVALID_CONFIGURATION,
+				"`%s' is not set and the hostname (`%s') cannot be used: %s",
+				"server_name", hostname, irc_validate_to_str (res));
+			return false;
+		}
+		ctx->server_name = xstrdup (hostname);
+	}
+	return true;
+}
+
 static bool
 irc_listen (struct server_context *ctx, struct error **e)
 {
@@ -790,6 +832,9 @@ irc_listen (struct server_context *ctx, struct error **e)
 	const char *bind_port = str_map_find (&ctx->config, "bind_port");
 	hard_assert (bind_port != NULL);  // We have a default value for this
 
+	if (!irc_initialize_server_name (ctx, e))
+		return false;
+
 	struct addrinfo gai_hints, *gai_result, *gai_iter;
 	memset (&gai_hints, 0, sizeof gai_hints);