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path: root/src/Common/libzip/zip_filerange_crc.c
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Diffstat (limited to 'src/Common/libzip/zip_filerange_crc.c')
-rw-r--r--src/Common/libzip/zip_filerange_crc.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/src/Common/libzip/zip_filerange_crc.c b/src/Common/libzip/zip_filerange_crc.c
index 6c4be27..33bf5d8 100644
--- a/src/Common/libzip/zip_filerange_crc.c
+++ b/src/Common/libzip/zip_filerange_crc.c
@@ -1,6 +1,6 @@
/*
zip_filerange_crc.c -- compute CRC32 for a range of a file
- Copyright (C) 2008-2016 Dieter Baron and Thomas Klausner
+ Copyright (C) 2008-2018 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>
@@ -39,7 +39,8 @@
int
_zip_filerange_crc(zip_source_t *src, zip_uint64_t start, zip_uint64_t len, uLong *crcp, zip_error_t *error) {
- Bytef buf[BUFSIZE];
+ DEFINE_BYTE_ARRAY(buf, BUFSIZE);
+
zip_int64_t n;
*crcp = crc32(0L, Z_NULL, 0);
@@ -54,14 +55,21 @@ _zip_filerange_crc(zip_source_t *src, zip_uint64_t start, zip_uint64_t len, uLon
return -1;
}
+ if (!byte_array_init(buf, BUFSIZE)) {
+ zip_error_set(error, ZIP_ER_MEMORY, 0);
+ return -1;
+ }
+
while (len > 0) {
n = (zip_int64_t)(len > BUFSIZE ? BUFSIZE : len);
if ((n = zip_source_read(src, buf, (zip_uint64_t)n)) < 0) {
_zip_error_set_from_source(error, src);
+ byte_array_fini(buf);
return -1;
}
if (n == 0) {
zip_error_set(error, ZIP_ER_EOF, 0);
+ byte_array_fini(buf);
return -1;
}
@@ -70,5 +78,7 @@ _zip_filerange_crc(zip_source_t *src, zip_uint64_t start, zip_uint64_t len, uLon
len -= (zip_uint64_t)n;
}
+ byte_array_fini(buf);
+
return 0;
}