148 lines
4.3 KiB
Text
148 lines
4.3 KiB
Text
|
.\" zip_fopen.mdoc -- open file in zip archive for reading
|
||
|
|
.\" Copyright (C) 2003-2017 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.
|
||
|
|
.\"
|
||
|
|
.Dd December 18, 2017
|
||
|
|
.Dt ZIP_FOPEN 3
|
||
|
|
.Os
|
||
|
|
.Sh NAME
|
||
|
|
.Nm zip_fopen ,
|
||
|
|
.Nm zip_fopen_index
|
||
|
|
.Nd open file in zip archive for reading
|
||
|
|
.Sh LIBRARY
|
||
|
|
libzip (-lzip)
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.In zip.h
|
||
|
|
.Ft zip_file_t *
|
||
|
|
.Fn zip_fopen "zip_t *archive" "const char *fname" "zip_flags_t flags"
|
||
|
|
.Ft zip_file_t *
|
||
|
|
.Fn zip_fopen_index "zip_t *archive" "zip_uint64_t index" "zip_flags_t flags"
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Fn zip_fopen
|
||
|
|
function opens the file name
|
||
|
|
.Ar fname
|
||
|
|
in
|
||
|
|
.Ar archive .
|
||
|
|
The
|
||
|
|
.Ar flags
|
||
|
|
argument specifies how the name lookup should be done, according to
|
||
|
|
the values are described in
|
||
|
|
.Xr zip_name_locate 3 .
|
||
|
|
Also, the following values may be
|
||
|
|
.Em or Ns No 'ed
|
||
|
|
to it.
|
||
|
|
.Bl -tag -offset indent -width ZIP_FL_COMPRESSED
|
||
|
|
.It Dv ZIP_FL_COMPRESSED
|
||
|
|
Read the compressed data.
|
||
|
|
Otherwise the data is uncompressed by
|
||
|
|
.Fn zip_fread .
|
||
|
|
.It Dv ZIP_FL_UNCHANGED
|
||
|
|
Read the original data from the zip archive, ignoring any changes made
|
||
|
|
to the file.
|
||
|
|
.El
|
||
|
|
.Pp
|
||
|
|
The
|
||
|
|
.Fn zip_fopen_index
|
||
|
|
function opens the file at position
|
||
|
|
.Ar index .
|
||
|
|
.Pp
|
||
|
|
If encrypted data is encountered, the functions call
|
||
|
|
.Xr zip_fopen_encrypted 3
|
||
|
|
or
|
||
|
|
.Xr zip_fopen_index_encrypted 3
|
||
|
|
respectively, using the default password set with
|
||
|
|
.Xr zip_set_default_password 3 .
|
||
|
|
.Sh RETURN VALUES
|
||
|
|
Upon successful completion, a
|
||
|
|
.Ft struct zip_file
|
||
|
|
pointer is returned.
|
||
|
|
Otherwise,
|
||
|
|
.Dv NULL
|
||
|
|
is returned and the error code in
|
||
|
|
.Ar archive
|
||
|
|
is set to indicate the error.
|
||
|
|
.Sh ERRORS
|
||
|
|
.Bl -tag -width Er
|
||
|
|
.It Bq Er ZIP_ER_CHANGED
|
||
|
|
The file data has been changed.
|
||
|
|
.It Bq Er ZIP_ER_COMPNOTSUPP
|
||
|
|
The compression method used is not supported.
|
||
|
|
.It Bq Er ZIP_ER_ENCRNOTSUPP
|
||
|
|
The encryption method used is not supported.
|
||
|
|
.It Bq Er ZIP_ER_MEMORY
|
||
|
|
Required memory could not be allocated.
|
||
|
|
.It Bq Er ZIP_ER_NOPASSWD
|
||
|
|
The file is encrypted, but no password has been provided.
|
||
|
|
.It Bq Er ZIP_ER_READ
|
||
|
|
A file read error occurred.
|
||
|
|
.It Bq Er ZIP_ER_SEEK
|
||
|
|
A file seek error occurred.
|
||
|
|
.It Bq Er ZIP_ER_WRONGPASSWD
|
||
|
|
The provided password does not match the password used for encryption.
|
||
|
|
Note that some incorrect passwords are not detected by the check done by
|
||
|
|
.Fn zip_fopen .
|
||
|
|
.It Bq Er ZIP_ER_ZLIB
|
||
|
|
Initializing the zlib stream failed.
|
||
|
|
.El
|
||
|
|
.Pp
|
||
|
|
The function
|
||
|
|
.Fn zip_fopen
|
||
|
|
may also fail and set
|
||
|
|
.Va zip_err
|
||
|
|
for any of the errors specified for the routine
|
||
|
|
.Xr zip_name_locate 3 .
|
||
|
|
.Pp
|
||
|
|
The function
|
||
|
|
.Fn zip_fopen_index
|
||
|
|
may also fail with
|
||
|
|
.Er ZIP_ER_INVAL
|
||
|
|
if
|
||
|
|
.Ar index
|
||
|
|
is invalid.
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr libzip 3 ,
|
||
|
|
.Xr zip_fclose 3 ,
|
||
|
|
.Xr zip_fread 3 ,
|
||
|
|
.Xr zip_fseek 3 ,
|
||
|
|
.Xr zip_get_num_entries 3 ,
|
||
|
|
.Xr zip_name_locate 3 ,
|
||
|
|
.Xr zip_set_default_password 3
|
||
|
|
.Sh HISTORY
|
||
|
|
.Fn zip_fopen
|
||
|
|
and
|
||
|
|
.Fn zip_fopen_index
|
||
|
|
were added in libzip 1.0.
|
||
|
|
.Sh AUTHORS
|
||
|
|
.An -nosplit
|
||
|
|
.An Dieter Baron Aq Mt dillo@nih.at
|
||
|
|
and
|
||
|
|
.An Thomas Klausner Aq Mt tk@giga.or.at
|