From 6fd511dd41c8925e70c8e3c0ab2bcde8e1af06de Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Sun, 29 Aug 2010 21:09:48 +0200
Subject: Support for fetching files via HTTP, needs more work and fixes.

---
 commands.c             |  27 +++++++++++++
 server_communication.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++
 server_communication.h |   2 +
 3 files changed, 134 insertions(+)

diff --git a/commands.c b/commands.c
index 4108cff..bde61cd 100644
--- a/commands.c
+++ b/commands.c
@@ -175,6 +175,31 @@ static void commands_exit(GSocketConnection *connection, const gchar *cmd, GErro
 	g_socket_close(socket, NULL);
 }
 
+static void commands_get(GSocketConnection *connection, const gchar *cmd, GError **error) {
+	gchar **data = g_strsplit(cmd, " ", 5);
+
+	if(g_strv_length(data) != 5) {
+		g_strfreev(data);
+		*error = g_error_new(commands_quark(), 0, "syntax: get TYPE LOCALFILE REMOTEHOST REMOTEFILE");
+		return;
+	}
+
+	struct server *server = NULL;
+
+	for(GSList *node = servers; node; node = g_slist_next(node)) {
+		struct server *temp = node->data;
+		if(g_strcasecmp(temp->host, data[3]) == 0) {
+			server = temp;
+			break;
+		}
+	}
+
+
+	server_get(server, data[1], data[2], data[4]);
+
+	g_strfreev(data);
+}
+
 void commands_handle(GSocketConnection *connection, const gchar *cmd, GError **error) {
 	g_debug(cmd);
 	if(g_strncasecmp(cmd, "ping", 4) == 0) {
@@ -185,6 +210,8 @@ void commands_handle(GSocketConnection *connection, const gchar *cmd, GError **e
 		commands_find(connection, cmd, error);
 	} else if(g_strncasecmp(cmd, "exit", 4) == 0) {
 		commands_exit(connection, cmd, error);
+	} else if(g_strncasecmp(cmd, "get", 3) == 0) {
+		commands_get(connection, cmd, error);
 	} else {
 		g_debug("unknown command");
 		*error = g_error_new(commands_quark(), 0, "unknown command %s", cmd);
diff --git a/server_communication.c b/server_communication.c
index cc37cde..ffe6942 100644
--- a/server_communication.c
+++ b/server_communication.c
@@ -110,3 +110,108 @@ gchar **server_list(struct server *server, const gchar *directory) {
 
 	return data;
 }
+
+/* TODO: remove temporary function */
+static GSocket *server_connect_port(struct server *server, gushort port) {
+	GError *error = NULL, *conn_error = NULL;
+	GSocketConnectable *addr;
+	GSocketAddressEnumerator *enumerator;
+	GSocketAddress *sockaddr;
+	GSocketConnection *conn = NULL;
+	GSocketClient *client;
+
+	addr = g_network_address_new(server->host, port);
+	enumerator = g_socket_connectable_enumerate(addr);
+	g_object_unref(addr);
+
+	client = g_socket_client_new();
+
+	while(conn == NULL && (sockaddr = g_socket_address_enumerator_next(enumerator, NULL, &error))) {
+		conn = g_socket_client_connect(client, (GSocketConnectable*)sockaddr, NULL, &conn_error);
+		g_object_unref(sockaddr);
+	}
+
+	if(sockaddr == NULL) {
+		if(error != NULL) {
+			g_warning(error->message);
+			g_error_free(error);
+		} else {
+			g_warning("server_connect: no connectable addresses found for host %s",
+					server->host);
+		}
+		return NULL;
+	}
+
+	if(conn == NULL) {
+		g_warning(conn_error->message);
+		g_error_free(conn_error);
+		return NULL;
+	}
+
+	GSocket *socket = g_socket_connection_get_socket(conn);
+
+	g_debug("connected");
+
+	return socket;
+}
+
+gboolean server_get(struct server *server, const gchar *type,
+		const gchar *localfile, const gchar *remotefile) {
+	GError *error = NULL;
+	GSocket *socket = server_connect_port(server, 8000);
+
+	if(socket == NULL) {
+		return FALSE;
+	}
+
+	gchar *cmd = g_strdup_printf("GET /get_%s %s HTTP/1.1\r\n\r\n", type, remotefile);
+
+	g_socket_send(socket, cmd, strlen(cmd), NULL, NULL);
+
+	GSocketConnection *connection = g_socket_connection_factory_create_connection(socket);
+	GDataInputStream *input = g_data_input_stream_new(g_io_stream_get_input_stream((GIOStream*)connection));
+	g_data_input_stream_set_newline_type(input, G_DATA_STREAM_NEWLINE_TYPE_CR_LF);
+
+	gchar *line = NULL;
+	gsize size;
+
+	while((line = g_data_input_stream_read_line(input, &size, NULL, &error)) != NULL) {
+		g_debug(line);
+		if(size == 0) {
+			break;
+		}
+	}
+
+	if(error != NULL) {
+		g_warning(error->message);
+		g_error_free(error);
+		return FALSE;
+	}
+
+	GFile *file = g_file_new_for_path(localfile);
+	GFileOutputStream *output = g_file_replace(file, NULL, FALSE, G_FILE_CREATE_NONE, NULL, &error);
+
+	if(output == NULL) {
+		g_warning(error->message);
+		g_error_free(error);
+		return FALSE;
+	}
+
+	g_output_stream_splice((GOutputStream*)output, (GInputStream*)input,
+			G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
+			NULL, &error);
+
+	g_object_unref(input);
+	g_object_unref(output);
+	g_object_unref(file);
+
+	if(error != NULL) {
+		g_warning(error->message);
+		g_error_free(error);
+		return FALSE;
+	}
+
+	g_object_unref(connection);
+
+	return TRUE;
+}
diff --git a/server_communication.h b/server_communication.h
index 7d7bc7c..ecf1fdb 100644
--- a/server_communication.h
+++ b/server_communication.h
@@ -8,5 +8,7 @@
 gboolean server_ping(struct server *server);
 gchar **server_find(struct server *server, const gchar *type, const gchar *str);
 gchar **server_list(struct server *server, const gchar *directory);
+gboolean server_get(struct server *server, const gchar *type,
+		const gchar *localfile, const gchar *remotefile);
 
 #endif
-- 
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