VeraCrypt
aboutsummaryrefslogtreecommitdiff
path: root/src/Common/libzip/zip_source_file.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/Common/libzip/zip_source_file.h')
-rw-r--r--src/Common/libzip/zip_source_file.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_source_file.h b/src/Common/libzip/zip_source_file.h
new file mode 100644
index 00000000..cca9fd2b
--- /dev/null
+++ b/src/Common/libzip/zip_source_file.h
@@ -0,0 +1,90 @@
+/*
+ zip_source_file.h -- header for common file operations
+ Copyright (C) 2020-2022 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.
+*/
+
+struct zip_source_file_stat {
+ zip_uint64_t size; /* must be valid for regular files */
+ time_t mtime; /* must always be valid, is initialized to current time */
+ bool exists; /* must always be valid */
+ bool regular_file; /* must always be valid */
+};
+
+typedef struct zip_source_file_context zip_source_file_context_t;
+typedef struct zip_source_file_operations zip_source_file_operations_t;
+typedef struct zip_source_file_stat zip_source_file_stat_t;
+
+struct zip_source_file_context {
+ zip_error_t error; /* last error information */
+ zip_int64_t supports;
+
+ /* reading */
+ char *fname; /* name of file to read from */
+ void *f; /* file to read from */
+ zip_stat_t st; /* stat information passed in */
+ zip_file_attributes_t attributes; /* additional file attributes */
+ zip_error_t stat_error; /* error returned for stat */
+ zip_uint64_t start; /* start offset of data to read */
+ zip_uint64_t len; /* length of the file, 0 for up to EOF */
+ zip_uint64_t offset; /* current offset relative to start (0 is beginning of part we read) */
+
+ /* writing */
+ char *tmpname;
+ void *fout;
+
+ zip_source_file_operations_t *ops;
+ void *ops_userdata;
+};
+
+
+/* The following methods must be implemented to support each feature:
+ - close, read, seek, and stat must always be implemented.
+ - To support specifying the file by name, open, and strdup must be implemented.
+ - For write support, the file must be specified by name and close, commit_write, create_temp_output, remove, rollback_write, and tell must be implemented.
+ - create_temp_output_cloning is always optional. */
+
+struct zip_source_file_operations {
+ void (*close)(zip_source_file_context_t *ctx);
+ zip_int64_t (*commit_write)(zip_source_file_context_t *ctx);
+ zip_int64_t (*create_temp_output)(zip_source_file_context_t *ctx);
+ zip_int64_t (*create_temp_output_cloning)(zip_source_file_context_t *ctx, zip_uint64_t len);
+ bool (*open)(zip_source_file_context_t *ctx);
+ zip_int64_t (*read)(zip_source_file_context_t *ctx, void *buf, zip_uint64_t len);
+ zip_int64_t (*remove)(zip_source_file_context_t *ctx);
+ void (*rollback_write)(zip_source_file_context_t *ctx);
+ bool (*seek)(zip_source_file_context_t *ctx, void *f, zip_int64_t offset, int whence);
+ bool (*stat)(zip_source_file_context_t *ctx, zip_source_file_stat_t *st);
+ char *(*string_duplicate)(zip_source_file_context_t *ctx, const char *);
+ zip_int64_t (*tell)(zip_source_file_context_t *ctx, void *f);
+ zip_int64_t (*write)(zip_source_file_context_t *ctx, const void *data, zip_uint64_t len);
+};
+
+zip_source_t *zip_source_file_common_new(const char *fname, void *file, zip_uint64_t start, zip_int64_t len, const zip_stat_t *st, zip_source_file_operations_t *ops, void *ops_userdata, zip_error_t *error);