1 files changed, 81 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_add_entry.c b/src/Common/libzip/zip_add_entry.c
new file mode 100644
index 00000000..9a9465c5
--- /dev/null
+++ b/src/Common/libzip/zip_add_entry.c
@@ -0,0 +1,81 @@
+/*
+  zip_add_entry.c -- create and init struct zip_entry
+  Copyright (C) 1999-2015 Dieter Baron and Thomas Klausner
+
+  This file is part of libzip, a library to manipulate ZIP archives.
+  The authors can be contacted at <libzip@nih.at>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+  3. The names of the authors may not be used to endorse or promote
+     products derived from this software without specific prior
+     written permission.
+ 
+  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include <stdlib.h>
+
+#include "zipint.h"
+
+
+/* NOTE: Signed due to -1 on error.  See zip_add.c for more details. */
+
+zip_int64_t
+_zip_add_entry(zip_t *za)
+{
+    zip_uint64_t idx;
+
+    if (za->nentry+1 >= za->nentry_alloc) {
+	zip_entry_t *rentries;
+	zip_uint64_t nalloc = za->nentry_alloc;
+	zip_uint64_t additional_entries = 2 * nalloc;
+	zip_uint64_t realloc_size;
+
+	if (additional_entries < 16) {
+	    additional_entries = 16;
+	}
+	else if (additional_entries > 1024) {
+	    additional_entries = 1024;
+	}
+	/* neither + nor * overflows can happen: nentry_alloc * sizeof(struct zip_entry) < UINT64_MAX */
+	nalloc += additional_entries;
+	realloc_size = sizeof(struct zip_entry) * (size_t)nalloc;
+
+	if (sizeof(struct zip_entry) * (size_t)za->nentry_alloc > realloc_size) {
+	    zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
+	    return -1;
+	}
+	rentries = (zip_entry_t *)realloc(za->entry, sizeof(struct zip_entry) * (size_t)nalloc);
+	if (!rentries) {
+	    zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
+	    return -1;
+	}
+	za->entry = rentries;
+	za->nentry_alloc = nalloc;
+    }
+
+    idx = za->nentry++;
+
+    _zip_entry_init(za->entry+idx);
+
+    return (zip_int64_t)idx;
+}