proc: expose HTTP Origin header in process environment

[project/uhttpd.git] / client.c

diff --git a/client.c b/client.c
index 0d7029b..05044ed 100644 (file)
--- a/client.c
+++ b/client.c
@@ -45,8 +45,10 @@ const char * const http_methods[] = {
 void uh_http_header(struct client *cl, int code, const char *summary)
 {
        struct http_request *r = &cl->request;
+       struct blob_attr *cur;
        const char *enc = "Transfer-Encoding: chunked\r\n";
        const char *conn;
+       int rem;
 
        cl->http_code = code;
 
@@ -64,6 +66,10 @@ void uh_http_header(struct client *cl, int code, const char *summary)
 
        if (!r->connection_close)
                ustream_printf(cl->us, "Keep-Alive: timeout=%d\r\n", conf.http_keepalive);
+
+       blobmsg_for_each_attr(cur, cl->hdr_response.head, rem)
+               ustream_printf(cl->us, "%s: %s\r\n", blobmsg_name(cur),
+                              blobmsg_get_string(cur));
 }
 
 static void uh_connection_close(struct client *cl)
@@ -114,6 +120,7 @@ void uh_request_done(struct client *cl)
 {
        uh_chunk_eof(cl);
        uh_dispatch_done(cl);
+       blob_buf_init(&cl->hdr_response, 0);
        memset(&cl->dispatch, 0, sizeof(cl->dispatch));
 
        if (!conf.http_keepalive || cl->request.connection_close)
@@ -228,6 +235,52 @@ static bool rfc1918_filter_check(struct client *cl)
        return false;
 }
 
+static bool tls_redirect_check(struct client *cl)
+{
+       int rem, port;
+       struct blob_attr *cur;
+       char *ptr, *url = NULL, *host = NULL;
+
+       if (cl->tls || !conf.tls_redirect)
+               return true;
+
+       if ((port = uh_first_tls_port(cl->srv_addr.family)) == -1)
+               return true;
+
+       blob_for_each_attr(cur, cl->hdr.head, rem) {
+               if (!strcmp(blobmsg_name(cur), "host"))
+                       host = blobmsg_get_string(cur);
+
+               if (!strcmp(blobmsg_name(cur), "URL"))
+                       url = blobmsg_get_string(cur);
+
+               if (url && host)
+                       break;
+       }
+
+       if (!url || !host)
+               return true;
+
+       if ((ptr = strchr(host, ']')) != NULL)
+               *(ptr+1) = 0;
+       else if ((ptr = strchr(host, ':')) != NULL)
+               *ptr = 0;
+
+       cl->request.disable_chunked = true;
+       cl->request.connection_close = true;
+
+       uh_http_header(cl, 307, "Temporary Redirect");
+
+       if (port != 443)
+               ustream_printf(cl->us, "Location: https://%s:%d%s\r\n\r\n", host, port, url);
+       else
+               ustream_printf(cl->us, "Location: https://%s%s\r\n\r\n", host, url);
+
+       uh_request_done(cl);
+
+       return false;
+}
+
 static void client_header_complete(struct client *cl)
 {
        struct http_request *r = &cl->request;
@@ -235,6 +288,9 @@ static void client_header_complete(struct client *cl)
        if (!rfc1918_filter_check(cl))
                return;
 
+       if (!tls_redirect_check(cl))
+               return;
+
        if (r->expect_cont)
                ustream_printf(cl->us, "HTTP/1.1 100 Continue\r\n\r\n");
 
@@ -481,6 +537,7 @@ static void client_close(struct client *cl)
        close(cl->sfd.fd.fd);
        list_del(&cl->list);
        blob_buf_free(&cl->hdr);
+       blob_buf_free(&cl->hdr_response);
        free(cl);
 
        uh_unblock_listeners();