libmicrohttpd

commit 5847d13f470d525502b991f94bd5e0f77c302368
parent f5170975b4fad18e6156884aef533b137843cff3
Author: Christian Grothoff <christian@grothoff.org>
Date:   Fri, 19 Jul 2019 19:19:39 +0200

inline TLS logic

Diffstat:
M
src/microhttpd/mhd_send.c
 | 
76
+++++++++++++++++++++++++++++++++++++++++++++++++---------------------------

1 file changed, 49 insertions(+), 27 deletions(-)
diff --git a/src/microhttpd/mhd_send.c b/src/microhttpd/mhd_send.c
@@ -85,7 +85,7 @@ MHD_send_on_connection_ (struct MHD_Connection *connection,
   /* The socket. */
   MHD_socket s = connection->socket_fd;
   int eno;
-  int ret;
+  ssize_t ret;
   int optval;
   const MHD_SCKT_OPT_BOOL_ off_val = 0;
   const MHD_SCKT_OPT_BOOL_ on_val = 1;
@@ -205,11 +205,36 @@ MHD_send_on_connection_ (struct MHD_Connection *connection,
 #ifdef HTTPS_SUPPORT
   if (using_tls)
   {
-    send_tls_adapter(connection, buffer, buffer_size);
+    if (i > SSIZE_MAX)
+      i = SSIZE_MAX;
+    ret = gnutls_record_send (connection->tls_session,
+                              buffer,
+                              buffer_size);
+    if ( (GNUTLS_E_AGAIN == ret) ||
+         (GNUTLS_E_INTERRUPTED == ret) )
+    {
+#ifdef EPOLL_SUPPORT
+      if (GNUTLS_E_AGAIN == ret)
+        connection->epoll_state &= ~MHD_EPOLL_STATE_WRITE_READY;
+#endif
+      return MHD_ERR_AGAIN_;
+    }
+    if (ret < 0)
+    {
+      /* Likely 'GNUTLS_E_INVALID_SESSION' (client communication
+         disrupted); interpret as a hard error */
+      return MHD_ERR_NOTCONN_;
+    }
+#ifdef EPOLL_SUPPORT
+    /* Unlike non-TLS connections, do not reset "write-ready" if
+     * sent amount smaller than provided amount, as TLS
+     * connections may break data into smaller parts for sending. */
+#endif /* EPOLL_SUPPORT */
   }
   else
 #endif
   {
+    /* plaintext transmission */
 #if MSG_MORE
     ret = send (connection->socket_fd,
                 buffer,
@@ -218,6 +243,28 @@ MHD_send_on_connection_ (struct MHD_Connection *connection,
 #else
     ret = send (connection->socket_fd, buffer, buffer_size, 0);
 #endif
+
+    if (0 > ret)
+    {
+      if (MHD_SCKT_ERR_IS_EAGAIN_ (err))
+      {
+#if EPOLL_SUPPORT
+        /* EAGAIN, no longer write-ready */
+        connection->epoll_state &= ~MHD_EPOLL_STATE_WRITE_READY;
+#endif /* EPOLL_SUPPORT */
+        return MHD_ERR_AGAIN_;
+      }
+      if (MHD_SCKT_ERR_IS_EINTR_ (err))
+        return MHD_ERR_AGAIN_;
+      if (MHD_SCKT_ERR_IS_ (err, MHD_SCKT_ECONNRESET_))
+        return MHD_ERR_CONNRESET_;
+      /* Treat any other error as hard error. */
+      return MHD_ERR_NOTCONN_;
+    }
+#if EPOLL_SUPPORT
+    else if (buffer_size > (size_t) ret)
+      connection->epoll_state &= ~MHD_EPOLL_STATE_WRITE_READY;
+#endif /* EPOLL_SUPPORT */
   }
 #if TCP_CORK
   if (use_corknopush)
@@ -273,31 +320,6 @@ MHD_send_on_connection_ (struct MHD_Connection *connection,
     gnutls_record_uncork(connection->tls_session);
   */
 
-  // shouldn't we return 0 or -1? Why re-use the _ERR_ functions?
-  // error handling from send_param_adapter():
-  if (0 > ret)
-  {
-    if (MHD_SCKT_ERR_IS_EAGAIN_ (err))
-    {
-#if EPOLL_SUPPORT
-      /* EAGAIN, no longer write-ready */
-      connection->epoll_state &= ~MHD_EPOLL_STATE_WRITE_READY;
-#endif /* EPOLL_SUPPORT */
-      return MHD_ERR_AGAIN_;
-    }
-    if (MHD_SCKT_ERR_IS_EINTR_ (err))
-      return MHD_ERR_AGAIN_;
-    if (MHD_SCKT_ERR_IS_ (err, MHD_SCKT_ECONNRESET_))
-      return MHD_ERR_CONNRESET_;
-    /* Treat any other error as hard error. */
-    return MHD_ERR_NOTCONN_;
-  }
-#if EPOLL_SUPPORT
-  else if (buffer_size > (size_t) ret)
-    connection->epoll_state &= ~MHD_EPOLL_STATE_WRITE_READY;
-#endif /* EPOLL_SUPPORT */
-  // return ret; // should be return at the end of the function?
-  // previous error save:
   errno = eno;
   return ret;
 }