added missing files.

src/str.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2002-2012 Free Software Foundation, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include <config.h>
+#include <c-ctype.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <minmax.h>
+#include <str.h>
+#include <main.h>
+
+#define MEMSUB(x,y) ((ssize_t)((ptrdiff_t)x-(ptrdiff_t)y))
+
+void str_clear(str_st * str)
+{
+	if (str == NULL || str->allocd == NULL)
+		return;
+	free(str->allocd);
+
+	str->data = str->allocd = NULL;
+	str->max_length = 0;
+	str->length = 0;
+}
+
+#define MIN_CHUNK 64
+
+int str_append_data(str_st * dest, const void *data, size_t data_size)
+{
+	size_t tot_len = data_size + dest->length;
+
+	if (data_size == 0)
+		return 0;
+
+	if (dest->max_length >= tot_len) {
+		size_t unused = MEMSUB(dest->data, dest->allocd);
+
+		if (dest->max_length - unused <= tot_len) {
+			if (dest->length && dest->data)
+				memmove(dest->allocd, dest->data,
+					dest->length);
+
+			dest->data = dest->allocd;
+		}
+		memmove(&dest->data[dest->length], data, data_size);
+		dest->length = tot_len;
+
+		return tot_len;
+	} else {
+		size_t unused = MEMSUB(dest->data, dest->allocd);
+		size_t new_len =
+		    MAX(data_size, MIN_CHUNK) + MAX(dest->max_length,
+						    MIN_CHUNK);
+
+		dest->allocd = realloc(dest->allocd, new_len);
+		if (dest->allocd == NULL)
+			return ERR_MEM;
+		dest->max_length = new_len;
+		dest->data = dest->allocd + unused;
+
+		if (dest->length && dest->data)
+			memmove(dest->allocd, dest->data, dest->length);
+		dest->data = dest->allocd;
+
+		memcpy(&dest->data[dest->length], data, data_size);
+		dest->length = tot_len;
+
+		return tot_len;
+	}
+}
+
+/* Appends the provided string. The null termination byte is appended
+ * but not included in length.
+ */
+int str_append_str(str_st * dest, const char *src)
+{
+	int ret;
+	ret = str_append_data(dest, src, strlen(src) + 1);
+	if (ret >= 0)
+		dest->length--;
+
+	return ret;
+}

src/str.h

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2000-2012 Free Software Foundation, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef GNUTLS_STR_H
+#define GNUTLS_STR_H
+
+#include <config.h>
+#include <stdint.h>
+
+typedef struct {
+	uint8_t *allocd;	/* pointer to allocated data */
+	uint8_t *data;		/* API: pointer to data to copy from */
+	size_t max_length;
+	size_t length;		/* API: current length */
+} str_st;
+
+/* Initialize a buffer */
+inline static void str_init(str_st * str)
+{
+	str->data = str->allocd = NULL;
+	str->max_length = 0;
+	str->length = 0;
+}
+
+/* Free the data in a buffer */
+void str_clear(str_st *);
+
+/* Set the buffer data to be of zero length */
+inline static void str_reset(str_st * buf)
+{
+	buf->data = buf->allocd;
+	buf->length = 0;
+}
+
+int str_append_str(str_st *, const char *str);
+int str_append_data(str_st *, const void *data, size_t data_size);
+
+
+#endif