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-rw-r--r--src/Common/libzip/zip_source_file_win32.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_source_file_win32.c b/src/Common/libzip/zip_source_file_win32.c
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+++ b/src/Common/libzip/zip_source_file_win32.c
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+/*
+ zip_source_file_win32.c -- read-only Windows file source implementation
+ Copyright (C) 1999-2022 Dieter Baron and Thomas Klausner
+
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <info@libzip.org>
+
+ 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 "zip_source_file_win32.h"
+
+static bool _zip_win32_op_stat(zip_source_file_context_t *ctx, zip_source_file_stat_t *st);
+
+static bool _zip_stat_win32(zip_source_file_context_t *ctx, zip_source_file_stat_t *st, HANDLE h);
+
+/* clang-format off */
+
+static zip_source_file_operations_t ops_win32_read = {
+ _zip_win32_op_close,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ _zip_win32_op_read,
+ NULL,
+ NULL,
+ _zip_win32_op_seek,
+ _zip_win32_op_stat,
+ NULL,
+ _zip_win32_op_tell,
+ NULL
+};
+
+/* clang-format on */
+
+ZIP_EXTERN zip_source_t *
+zip_source_win32handle(zip_t *za, HANDLE h, zip_uint64_t start, zip_int64_t len) {
+ if (za == NULL) {
+ return NULL;
+ }
+
+ return zip_source_win32handle_create(h, start, len, &za->error);
+}
+
+
+ZIP_EXTERN zip_source_t *
+zip_source_win32handle_create(HANDLE h, zip_uint64_t start, zip_int64_t length, zip_error_t *error) {
+ if (h == INVALID_HANDLE_VALUE || length < ZIP_LENGTH_UNCHECKED) {
+ zip_error_set(error, ZIP_ER_INVAL, 0);
+ return NULL;
+ }
+
+ return zip_source_file_common_new(NULL, h, start, length, NULL, &ops_win32_read, NULL, error);
+}
+
+
+void
+_zip_win32_op_close(zip_source_file_context_t *ctx) {
+ CloseHandle((HANDLE)ctx->f);
+}
+
+
+zip_int64_t
+_zip_win32_op_read(zip_source_file_context_t *ctx, void *buf, zip_uint64_t len) {
+ DWORD i;
+
+ /* TODO: cap len to "DWORD_MAX" */
+ if (!ReadFile((HANDLE)ctx->f, buf, (DWORD)len, &i, NULL)) {
+ zip_error_set(&ctx->error, ZIP_ER_READ, _zip_win32_error_to_errno(GetLastError()));
+ return -1;
+ }
+
+ return (zip_int64_t)i;
+}
+
+
+bool
+_zip_win32_op_seek(zip_source_file_context_t *ctx, void *f, zip_int64_t offset, int whence) {
+ LARGE_INTEGER li;
+ DWORD method;
+
+ switch (whence) {
+ case SEEK_SET:
+ method = FILE_BEGIN;
+ break;
+ case SEEK_END:
+ method = FILE_END;
+ break;
+ case SEEK_CUR:
+ method = FILE_CURRENT;
+ break;
+ default:
+ zip_error_set(&ctx->error, ZIP_ER_SEEK, EINVAL);
+ return false;
+ }
+
+ li.QuadPart = (LONGLONG)offset;
+ if (!SetFilePointerEx((HANDLE)f, li, NULL, method)) {
+ zip_error_set(&ctx->error, ZIP_ER_SEEK, _zip_win32_error_to_errno(GetLastError()));
+ return false;
+ }
+
+ return true;
+}
+
+
+static bool
+_zip_win32_op_stat(zip_source_file_context_t *ctx, zip_source_file_stat_t *st) {
+ return _zip_stat_win32(ctx, st, (HANDLE)ctx->f);
+}
+
+
+zip_int64_t
+_zip_win32_op_tell(zip_source_file_context_t *ctx, void *f) {
+ LARGE_INTEGER zero;
+ LARGE_INTEGER new_offset;
+
+ zero.QuadPart = 0;
+ if (!SetFilePointerEx((HANDLE)f, zero, &new_offset, FILE_CURRENT)) {
+ zip_error_set(&ctx->error, ZIP_ER_SEEK, _zip_win32_error_to_errno(GetLastError()));
+ return -1;
+ }
+
+ return (zip_int64_t)new_offset.QuadPart;
+}
+
+
+int
+_zip_win32_error_to_errno(DWORD win32err) {
+ /* Note: This list isn't exhaustive, but should cover common cases. */
+ switch (win32err) {
+ case ERROR_INVALID_PARAMETER:
+ return EINVAL;
+ case ERROR_FILE_NOT_FOUND:
+ case ERROR_PATH_NOT_FOUND:
+ return ENOENT;
+ case ERROR_INVALID_HANDLE:
+ return EBADF;
+ case ERROR_ACCESS_DENIED:
+ return EACCES;
+ case ERROR_FILE_EXISTS:
+ return EEXIST;
+ case ERROR_TOO_MANY_OPEN_FILES:
+ return EMFILE;
+ case ERROR_DISK_FULL:
+ return ENOSPC;
+ default:
+ return 10000 + win32err;
+ }
+}
+
+
+static bool
+_zip_stat_win32(zip_source_file_context_t *ctx, zip_source_file_stat_t *st, HANDLE h) {
+ FILETIME mtimeft;
+ time_t mtime;
+ LARGE_INTEGER size;
+
+ if (!GetFileTime(h, NULL, NULL, &mtimeft)) {
+ zip_error_set(&ctx->error, ZIP_ER_READ, _zip_win32_error_to_errno(GetLastError()));
+ return false;
+ }
+ if (!_zip_filetime_to_time_t(mtimeft, &mtime)) {
+ zip_error_set(&ctx->error, ZIP_ER_READ, ERANGE);
+ return false;
+ }
+
+ st->exists = true;
+ st->mtime = mtime;
+
+ if (GetFileType(h) == FILE_TYPE_DISK) {
+ st->regular_file = 1;
+
+ if (!GetFileSizeEx(h, &size)) {
+ zip_error_set(&ctx->error, ZIP_ER_READ, _zip_win32_error_to_errno(GetLastError()));
+ return false;
+ }
+
+ st->size = (zip_uint64_t)size.QuadPart;
+ }
+
+ /* TODO: fill in ctx->attributes */
+
+ return true;
+}
+
+
+bool
+_zip_filetime_to_time_t(FILETIME ft, time_t *t) {
+ /*
+ Inspired by http://stackoverflow.com/questions/6161776/convert-windows-filetime-to-second-in-unix-linux
+ */
+ const zip_int64_t WINDOWS_TICK = 10000000LL;
+ const zip_int64_t SEC_TO_UNIX_EPOCH = 11644473600LL;
+ ULARGE_INTEGER li;
+ zip_int64_t secs;
+ time_t temp;
+
+ li.LowPart = ft.dwLowDateTime;
+ li.HighPart = ft.dwHighDateTime;
+ secs = (li.QuadPart / WINDOWS_TICK - SEC_TO_UNIX_EPOCH);
+
+ temp = (time_t)secs;
+ if (secs != (zip_int64_t)temp) {
+ return false;
+ }
+
+ *t = temp;
+ return true;
+}