[http] Support HTTP redirection

diff --git a/src/net/tcp/http.c b/src/net/tcp/http.c
index b7cbea4..b8ea3cc 100644 (file)
--- a/src/net/tcp/http.c
+++ b/src/net/tcp/http.c
@@ -138,6 +138,8 @@ static void http_done ( struct http_request *http, int rc ) {
 static int http_response_to_rc ( unsigned int response ) {
        switch ( response ) {
        case 200:
+       case 301:
+       case 302:
                return 0;
        case 404:
                return -ENOENT;
@@ -180,6 +182,28 @@ static int http_rx_response ( struct http_request *http, char *response ) {
        return 0;
 }
 
+/**
+ * Handle HTTP Location header
+ *
+ * @v http             HTTP request
+ * @v value            HTTP header value
+ * @ret rc             Return status code
+ */
+static int http_rx_location ( struct http_request *http, const char *value ) {
+       int rc;
+
+       /* Redirect to new location */
+       DBGC ( http, "HTTP %p redirecting to %s\n", http, value );
+       if ( ( rc = xfer_redirect ( &http->xfer, LOCATION_URI_STRING,
+                                   value ) ) != 0 ) {
+               DBGC ( http, "HTTP %p could not redirect: %s\n",
+                      http, strerror ( rc ) );
+               return rc;
+       }
+
+       return 0;
+}
+
 /**
  * Handle HTTP Content-Length header
  *
@@ -222,6 +246,10 @@ struct http_header_handler {
 
 /** List of HTTP header handlers */
 static struct http_header_handler http_header_handlers[] = {
+       {
+               .header = "Location",
+               .rx = http_rx_location,
+       },
        {
                .header = "Content-Length",
                .rx = http_rx_content_length,