From e0d5fed53eaa1d6df5c037d9a5fca076c81887e5 Mon Sep 17 00:00:00 2001
From: Jose Marcial Vieira Bisneto <marcial.vieirab@gmail.com>
Date: Thu, 21 Sep 2017 11:50:15 -0300
Subject: [PATCH] HTTP redirection added in the API.

---
 core/api.c              | 29 ++++++++++++++++++++---------
 include/ipfs/core/api.h | 14 ++++++++++++++
 2 files changed, 34 insertions(+), 9 deletions(-)

diff --git a/core/api.c b/core/api.c
index fa99402..ae6075f 100644
--- a/core/api.c
+++ b/core/api.c
@@ -427,19 +427,30 @@ void *api_connection_thread (void *ptr)
 			if (strcmp (req.buf + req.path, "/")==0   ||
 			    strcmp (req.buf + req.path, "/webui") ||
 			    strcmp (req.buf + req.path, "/webui/")==0) {
-				path = "/ipfs/QmPhnvn747LqwPYMJmQVorMaGbMSgA7mRRoyyZYz3DoZRQ/"; // WEBUI PAGE
+				char *redir;
+				size_t size = sizeof(HTTP_301) + (sizeof(WEBUI_ADDR)*2);
+
+				redir = malloc(size);
+				if (redir) {
+					snprintf(redir, size, HTTP_301, WEBUI_ADDR, WEBUI_ADDR);
+					redir[size-1] = '\0'; // just in case
+					write_dual (s, req.buf + req.http_ver, strchr (redir, ' '));
+					free (redir);
+				} else {
+					write_cstr (s, HTTP_500);
+				}
 			} else {
 				path = req.buf + req.path;
-			}
 
-			if (get_object(params->this_node, path, &obj, &size)) {
-				if (!send_object(s, obj, size)) {
-					libp2p_logger_error("api", "fail send_object.\n");
+				if (get_object(params->this_node, path, &obj, &size)) {
+					if (!send_object(s, obj, size)) {
+						libp2p_logger_error("api", "fail send_object.\n");
+					}
+					free(obj);
+				} else {
+					// object not found.
+					write_dual (s, req.buf + req.http_ver, strchr (HTTP_404, ' '));
 				}
-				free(obj);
-			} else {
-				// object not found.
-				write_dual (s, req.buf + req.http_ver, strchr (HTTP_404, ' '));
 			}
 		} else if (strcmp(buf + req.method, "POST")==0) {
 			// TODO: Handle gzip/json POST requests.
diff --git a/include/ipfs/core/api.h b/include/ipfs/core/api.h
index e6bc12a..85fbfa8 100644
--- a/include/ipfs/core/api.h
+++ b/include/ipfs/core/api.h
@@ -39,6 +39,20 @@ struct s_request {
 	size_t boundary_size;
 };
 
+#define WEBUI_ADDR	"/ipfs/QmPhnvn747LqwPYMJmQVorMaGbMSgA7mRRoyyZYz3DoZRQ/"
+
+#define HTTP_301	"HTTP/1.1 301 Moved Permanently\r\n" \
+			"Location: %s\r\n" \
+			"Content-Type: text/html\r\n\r\n" \
+			"<a href=\"%s\">Moved Permanently</a>.\r\n\r\n"
+
+#define HTTP_302	"HTTP/1.1 302 Found\r\n" \
+			"Content-Type: text/html\r\n" \
+			"Connection: close\r\n" \
+			"Location: %s\r\n" \
+			"X-Ipfs-Path: %s\r\n\r\n" \
+			"<a href=\"%s\">Found</a>.\r\n\r\n"
+
 #define HTTP_400	"HTTP/1.1 400 Bad Request\r\n" \
 			"Content-Type: text/plain\r\n" \
 			"Connection: close\r\n\r\n" \