Index: runtime/bin/net/nss_memio.h |
diff --git a/runtime/bin/net/nss_memio.h b/runtime/bin/net/nss_memio.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..bdf7afedab999c8b8f4e3348d5af1a17eb605563 |
--- /dev/null |
+++ b/runtime/bin/net/nss_memio.h |
@@ -0,0 +1,90 @@ |
+// Copyright (c) 2011 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+// Written in NSPR style to also be suitable for adding to the NSS demo suite |
+ |
+#ifndef BIN_NET_NSS_MEMIO_H_ |
+#define BIN_NET_NSS_MEMIO_H_ |
+ |
+#include <stddef.h> |
+#include "vm/globals.h" |
+ |
+#ifdef __cplusplus |
+extern "C" { |
+#endif |
+ |
+#include "prio.h" |
+ |
+/* Opaque structure. Really just a more typesafe alias for PRFilePrivate. */ |
+struct memio_Private; |
+typedef struct memio_Private memio_Private; |
+ |
+/*---------------------------------------------------------------------- |
+ NSPR I/O layer that terminates in a pair of circular buffers |
+ rather than talking to the real network. |
+ To use this with NSS: |
+ 1) call memio_CreateIOLayer to create a fake NSPR socket |
+ 2) call SSL_ImportFD to ssl-ify the socket |
+ 3) Do your own networking calls to set up a TCP connection |
+ 4) call memio_SetPeerName to tell NSS about the other end of the connection |
+ 5) While at the same time doing plaintext nonblocking NSPR I/O as |
+ usual to the nspr file descriptor returned by SSL_ImportFD, |
+ your app must shuttle encrypted data between |
+ the real network and memio's network buffers. |
+ memio_GetReadParams/memio_PutReadResult |
+ are the hooks you need to pump data into memio's input buffer, |
+ and memio_GetWriteParams/memio_PutWriteResult |
+ are the hooks you need to pump data out of memio's output buffer. |
+----------------------------------------------------------------------*/ |
+ |
+/* Create the I/O layer and its two circular buffers. */ |
+PRFileDesc *memio_CreateIOLayer(int bufsize); |
+ |
+/* Must call before trying to make an ssl connection */ |
+void memio_SetPeerName(PRFileDesc *fd, const PRNetAddr *peername); |
+ |
+/* Return a private pointer needed by the following |
+ * four functions. (We could have passed a PRFileDesc to |
+ * them, but that would be slower. Better for the caller |
+ * to grab the pointer once and cache it. |
+ * This may be a premature optimization.) |
+ */ |
+memio_Private *memio_GetSecret(PRFileDesc *fd); |
+ |
+/* Ask memio where to put bytes from the network, and how many it can handle. |
+ * Returns bytes available to write, or 0 if none available. |
+ * Puts current buffer position into *buf. |
+ */ |
+int memio_GetReadParams(memio_Private *secret, uint8_t **buf); |
+ |
+/* Tell memio how many bytes were read from the network. |
+ * If bytes_read is 0, causes EOF to be reported to |
+ * NSS after it reads the last byte from the circular buffer. |
+ * If bytes_read is < 0, it is treated as an NSPR error code. |
+ * See nspr/pr/src/md/unix/unix_errors.c for how to |
+ * map from Unix errors to NSPR error codes. |
+ * On EWOULDBLOCK or the equivalent, don't call this function. |
+ */ |
+void memio_PutReadResult(memio_Private *secret, int bytes_read); |
+ |
+/* Ask memio what data it has to send to the network. |
+ * Returns up to two buffers of data by writing the positions and lengths into |
+ * |buf1|, |len1| and |buf2|, |len2|. |
+ */ |
+void memio_GetWriteParams(memio_Private *secret, |
+ const uint8_t **buf1, unsigned int *len1, |
+ const uint8_t **buf2, unsigned int *len2); |
+ |
+/* Tell memio how many bytes were sent to the network. |
+ * If bytes_written is < 0, it is treated as an NSPR error code. |
+ * See nspr/pr/src/md/unix/unix_errors.c for how to |
+ * map from Unix errors to NSPR error codes. |
+ * On EWOULDBLOCK or the equivalent, don't call this function. |
+ */ |
+void memio_PutWriteResult(memio_Private *secret, int bytes_written); |
+ |
+#ifdef __cplusplus |
+} |
+#endif |
+ |
+#endif // BIN_NET_NSS_MEMIO_H_ |