1 files changed, 88 insertions, 0 deletions
diff --git a/lib/gnutls_buffers.c b/lib/gnutls_buffers.c
new file mode 100644
index 0000000000..9b8b3fd6f1
--- /dev/null
+++ b/lib/gnutls_buffers.c
@@ -0,0 +1,88 @@
+#include <defines.h>
+#include <mhash.h>
+#include "gnutls_int.h"
+#include "gnutls_errors.h"
+
+int gnutls_insertDataBuffer(GNUTLS_STATE state, char *data, int length)
+{
+	int old_buffer = state->gnutls_internals.bufferSize;
+
+	state->gnutls_internals.bufferSize += length;
+	state->gnutls_internals.buffer =
+	    gnutls_realloc(state->gnutls_internals.buffer,
+			   state->gnutls_internals.bufferSize);
+	memmove(&state->gnutls_internals.buffer[old_buffer], data, length);
+
+	return 0;
+
+}
+
+int gnutls_getDataBufferSize(ContentType type, GNUTLS_STATE state)
+{
+	if (type == GNUTLS_APPLICATION_DATA)
+		return state->gnutls_internals.bufferSize;
+	return 0;
+}
+
+int gnutls_getDataFromBuffer(GNUTLS_STATE state, char *data, int length)
+{
+	if (length > state->gnutls_internals.bufferSize) {
+		length = state->gnutls_internals.bufferSize;
+	}
+
+	state->gnutls_internals.bufferSize -= length;
+	memmove(data, state->gnutls_internals.buffer, length);
+
+	/* overwrite buffer */
+	memmove(state->gnutls_internals.buffer,
+		&state->gnutls_internals.buffer[length],
+		state->gnutls_internals.bufferSize);
+	state->gnutls_internals.buffer =
+	    gnutls_realloc(state->gnutls_internals.buffer,
+			   state->gnutls_internals.bufferSize);
+
+	return length;
+}
+
+ssize_t Read(int fd, void *iptr, size_t sizeOfPtr)
+{
+	size_t left;
+	ssize_t i=0;
+	char *ptr = iptr;
+
+	left = sizeOfPtr;
+	while (left > 0) {
+		i = read(fd, &ptr[i], left);
+		if (i < 0) {
+			return -1;
+		} else {
+			if (i == 0)
+				break;	/* EOF */
+		}
+
+		left -= i;
+
+	}
+
+	return (sizeOfPtr - left);
+}
+
+
+ssize_t Write(int fd, const void *iptr, size_t n)
+{
+	size_t left;
+	ssize_t i = 0;
+	const char *ptr = iptr;
+
+	left = n;
+	while (left > 0) {
+		i = write(fd, &ptr[i], left);
+		if (i <= 0) {
+			return -1;
+		}
+		left -= i;
+	}
+
+	return n;
+
+}