mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-14 05:16:18 +01:00
9b4c50f63d
All those logging functions already add a newline to any message they print, so there’s no need to add a trailing newline in the message passed to them. Signed-off-by: Philip Withnall <withnall@endlessm.com> Reviewed-by: nobody
414 lines
11 KiB
C
414 lines
11 KiB
C
/* GIO - GLib Input, Output and Streaming Library
|
|
*
|
|
* Copyright (C) 2009 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General
|
|
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author: Alexander Larsson <alexl@redhat.com>
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gzlibdecompressor.h"
|
|
|
|
#include <errno.h>
|
|
#include <zlib.h>
|
|
#include <string.h>
|
|
|
|
#include "gfileinfo.h"
|
|
#include "gioerror.h"
|
|
#include "gioenums.h"
|
|
#include "gioenumtypes.h"
|
|
#include "glibintl.h"
|
|
|
|
|
|
enum {
|
|
PROP_0,
|
|
PROP_FORMAT,
|
|
PROP_FILE_INFO
|
|
};
|
|
|
|
/**
|
|
* SECTION:gzdecompressor
|
|
* @short_description: Zlib decompressor
|
|
* @include: gio/gio.h
|
|
*
|
|
* #GZlibDecompressor is an implementation of #GConverter that
|
|
* decompresses data compressed with zlib.
|
|
*/
|
|
|
|
static void g_zlib_decompressor_iface_init (GConverterIface *iface);
|
|
|
|
typedef struct {
|
|
gz_header gzheader;
|
|
char filename[257];
|
|
GFileInfo *file_info;
|
|
} HeaderData;
|
|
|
|
/**
|
|
* GZlibDecompressor:
|
|
*
|
|
* Zlib decompression
|
|
*/
|
|
struct _GZlibDecompressor
|
|
{
|
|
GObject parent_instance;
|
|
|
|
GZlibCompressorFormat format;
|
|
z_stream zstream;
|
|
HeaderData *header_data;
|
|
};
|
|
|
|
static void
|
|
g_zlib_decompressor_set_gzheader (GZlibDecompressor *decompressor)
|
|
{
|
|
/* On win32, these functions were not exported before 1.2.4 */
|
|
#if !defined (G_OS_WIN32) || ZLIB_VERNUM >= 0x1240
|
|
if (decompressor->format != G_ZLIB_COMPRESSOR_FORMAT_GZIP)
|
|
return;
|
|
|
|
if (decompressor->header_data != NULL)
|
|
{
|
|
if (decompressor->header_data->file_info)
|
|
g_object_unref (decompressor->header_data->file_info);
|
|
|
|
memset (decompressor->header_data, 0, sizeof (HeaderData));
|
|
}
|
|
else
|
|
{
|
|
decompressor->header_data = g_new0 (HeaderData, 1);
|
|
}
|
|
|
|
decompressor->header_data->gzheader.name = (Bytef*) &decompressor->header_data->filename;
|
|
/* We keep one byte to guarantee the string is 0-terminated */
|
|
decompressor->header_data->gzheader.name_max = 256;
|
|
|
|
if (inflateGetHeader (&decompressor->zstream, &decompressor->header_data->gzheader) != Z_OK)
|
|
g_warning ("unexpected zlib error: %s", decompressor->zstream.msg);
|
|
#endif /* !G_OS_WIN32 || ZLIB >= 1.2.4 */
|
|
}
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (GZlibDecompressor, g_zlib_decompressor, G_TYPE_OBJECT,
|
|
G_IMPLEMENT_INTERFACE (G_TYPE_CONVERTER,
|
|
g_zlib_decompressor_iface_init))
|
|
|
|
static void
|
|
g_zlib_decompressor_finalize (GObject *object)
|
|
{
|
|
GZlibDecompressor *decompressor;
|
|
|
|
decompressor = G_ZLIB_DECOMPRESSOR (object);
|
|
|
|
inflateEnd (&decompressor->zstream);
|
|
|
|
if (decompressor->header_data != NULL)
|
|
{
|
|
if (decompressor->header_data->file_info)
|
|
g_object_unref (decompressor->header_data->file_info);
|
|
g_free (decompressor->header_data);
|
|
}
|
|
|
|
G_OBJECT_CLASS (g_zlib_decompressor_parent_class)->finalize (object);
|
|
}
|
|
|
|
|
|
static void
|
|
g_zlib_decompressor_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GZlibDecompressor *decompressor;
|
|
|
|
decompressor = G_ZLIB_DECOMPRESSOR (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_FORMAT:
|
|
decompressor->format = g_value_get_enum (value);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
g_zlib_decompressor_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GZlibDecompressor *decompressor;
|
|
|
|
decompressor = G_ZLIB_DECOMPRESSOR (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_FORMAT:
|
|
g_value_set_enum (value, decompressor->format);
|
|
break;
|
|
|
|
case PROP_FILE_INFO:
|
|
if (decompressor->header_data)
|
|
g_value_set_object (value, decompressor->header_data->file_info);
|
|
else
|
|
g_value_set_object (value, NULL);
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_zlib_decompressor_init (GZlibDecompressor *decompressor)
|
|
{
|
|
}
|
|
|
|
static void
|
|
g_zlib_decompressor_constructed (GObject *object)
|
|
{
|
|
GZlibDecompressor *decompressor;
|
|
int res;
|
|
|
|
decompressor = G_ZLIB_DECOMPRESSOR (object);
|
|
|
|
if (decompressor->format == G_ZLIB_COMPRESSOR_FORMAT_GZIP)
|
|
{
|
|
/* + 16 for gzip */
|
|
res = inflateInit2 (&decompressor->zstream, MAX_WBITS + 16);
|
|
}
|
|
else if (decompressor->format == G_ZLIB_COMPRESSOR_FORMAT_RAW)
|
|
{
|
|
/* Negative for raw */
|
|
res = inflateInit2 (&decompressor->zstream, -MAX_WBITS);
|
|
}
|
|
else /* ZLIB */
|
|
res = inflateInit (&decompressor->zstream);
|
|
|
|
if (res == Z_MEM_ERROR )
|
|
g_error ("GZlibDecompressor: Not enough memory for zlib use");
|
|
|
|
if (res != Z_OK)
|
|
g_warning ("unexpected zlib error: %s", decompressor->zstream.msg);
|
|
|
|
g_zlib_decompressor_set_gzheader (decompressor);
|
|
}
|
|
|
|
static void
|
|
g_zlib_decompressor_class_init (GZlibDecompressorClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
gobject_class->finalize = g_zlib_decompressor_finalize;
|
|
gobject_class->constructed = g_zlib_decompressor_constructed;
|
|
gobject_class->get_property = g_zlib_decompressor_get_property;
|
|
gobject_class->set_property = g_zlib_decompressor_set_property;
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_FORMAT,
|
|
g_param_spec_enum ("format",
|
|
P_("compression format"),
|
|
P_("The format of the compressed data"),
|
|
G_TYPE_ZLIB_COMPRESSOR_FORMAT,
|
|
G_ZLIB_COMPRESSOR_FORMAT_ZLIB,
|
|
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GZlibDecompressor:file-info:
|
|
*
|
|
* A #GFileInfo containing the information found in the GZIP header
|
|
* of the data stream processed, or %NULL if the header was not yet
|
|
* fully processed, is not present at all, or the compressor's
|
|
* #GZlibDecompressor:format property is not %G_ZLIB_COMPRESSOR_FORMAT_GZIP.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_FILE_INFO,
|
|
g_param_spec_object ("file-info",
|
|
P_("file info"),
|
|
P_("File info"),
|
|
G_TYPE_FILE_INFO,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
/**
|
|
* g_zlib_decompressor_new:
|
|
* @format: The format to use for the compressed data
|
|
*
|
|
* Creates a new #GZlibDecompressor.
|
|
*
|
|
* Returns: a new #GZlibDecompressor
|
|
*
|
|
* Since: 2.24
|
|
**/
|
|
GZlibDecompressor *
|
|
g_zlib_decompressor_new (GZlibCompressorFormat format)
|
|
{
|
|
GZlibDecompressor *decompressor;
|
|
|
|
decompressor = g_object_new (G_TYPE_ZLIB_DECOMPRESSOR,
|
|
"format", format,
|
|
NULL);
|
|
|
|
return decompressor;
|
|
}
|
|
|
|
/**
|
|
* g_zlib_decompressor_get_file_info:
|
|
* @decompressor: a #GZlibDecompressor
|
|
*
|
|
* Retrieves the #GFileInfo constructed from the GZIP header data
|
|
* of compressed data processed by @compressor, or %NULL if @decompressor's
|
|
* #GZlibDecompressor:format property is not %G_ZLIB_COMPRESSOR_FORMAT_GZIP,
|
|
* or the header data was not fully processed yet, or it not present in the
|
|
* data stream at all.
|
|
*
|
|
* Returns: (transfer none): a #GFileInfo, or %NULL
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GFileInfo *
|
|
g_zlib_decompressor_get_file_info (GZlibDecompressor *decompressor)
|
|
{
|
|
g_return_val_if_fail (G_IS_ZLIB_DECOMPRESSOR (decompressor), NULL);
|
|
|
|
if (decompressor->header_data)
|
|
return decompressor->header_data->file_info;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
g_zlib_decompressor_reset (GConverter *converter)
|
|
{
|
|
GZlibDecompressor *decompressor = G_ZLIB_DECOMPRESSOR (converter);
|
|
int res;
|
|
|
|
res = inflateReset (&decompressor->zstream);
|
|
if (res != Z_OK)
|
|
g_warning ("unexpected zlib error: %s", decompressor->zstream.msg);
|
|
|
|
g_zlib_decompressor_set_gzheader (decompressor);
|
|
}
|
|
|
|
static GConverterResult
|
|
g_zlib_decompressor_convert (GConverter *converter,
|
|
const void *inbuf,
|
|
gsize inbuf_size,
|
|
void *outbuf,
|
|
gsize outbuf_size,
|
|
GConverterFlags flags,
|
|
gsize *bytes_read,
|
|
gsize *bytes_written,
|
|
GError **error)
|
|
{
|
|
GZlibDecompressor *decompressor;
|
|
int res;
|
|
|
|
decompressor = G_ZLIB_DECOMPRESSOR (converter);
|
|
|
|
decompressor->zstream.next_in = (void *)inbuf;
|
|
decompressor->zstream.avail_in = inbuf_size;
|
|
|
|
decompressor->zstream.next_out = outbuf;
|
|
decompressor->zstream.avail_out = outbuf_size;
|
|
|
|
res = inflate (&decompressor->zstream, Z_NO_FLUSH);
|
|
|
|
if (res == Z_DATA_ERROR || res == Z_NEED_DICT)
|
|
{
|
|
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
|
|
_("Invalid compressed data"));
|
|
return G_CONVERTER_ERROR;
|
|
}
|
|
|
|
if (res == Z_MEM_ERROR)
|
|
{
|
|
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
|
|
_("Not enough memory"));
|
|
return G_CONVERTER_ERROR;
|
|
}
|
|
|
|
if (res == Z_STREAM_ERROR)
|
|
{
|
|
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
|
|
_("Internal error: %s"), decompressor->zstream.msg);
|
|
return G_CONVERTER_ERROR;
|
|
}
|
|
|
|
if (res == Z_BUF_ERROR)
|
|
{
|
|
if (flags & G_CONVERTER_FLUSH)
|
|
return G_CONVERTER_FLUSHED;
|
|
|
|
/* Z_FINISH not set, so this means no progress could be made */
|
|
/* We do have output space, so this should only happen if we
|
|
have no input but need some */
|
|
|
|
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_PARTIAL_INPUT,
|
|
_("Need more input"));
|
|
return G_CONVERTER_ERROR;
|
|
}
|
|
|
|
g_assert (res == Z_OK || res == Z_STREAM_END);
|
|
|
|
*bytes_read = inbuf_size - decompressor->zstream.avail_in;
|
|
*bytes_written = outbuf_size - decompressor->zstream.avail_out;
|
|
|
|
#if !defined (G_OS_WIN32) || ZLIB_VERNUM >= 0x1240
|
|
if (decompressor->header_data != NULL &&
|
|
decompressor->header_data->gzheader.done == 1)
|
|
{
|
|
HeaderData *data = decompressor->header_data;
|
|
|
|
/* So we don't notify again */
|
|
data->gzheader.done = 2;
|
|
|
|
data->file_info = g_file_info_new ();
|
|
g_file_info_set_attribute_uint64 (data->file_info,
|
|
G_FILE_ATTRIBUTE_TIME_MODIFIED,
|
|
data->gzheader.time);
|
|
g_file_info_set_attribute_uint32 (data->file_info,
|
|
G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC,
|
|
0);
|
|
|
|
if (data->filename[0] != '\0')
|
|
g_file_info_set_attribute_byte_string (data->file_info,
|
|
G_FILE_ATTRIBUTE_STANDARD_NAME,
|
|
data->filename);
|
|
|
|
g_object_notify (G_OBJECT (decompressor), "file-info");
|
|
}
|
|
#endif /* !G_OS_WIN32 || ZLIB >= 1.2.4 */
|
|
|
|
if (res == Z_STREAM_END)
|
|
return G_CONVERTER_FINISHED;
|
|
return G_CONVERTER_CONVERTED;
|
|
}
|
|
|
|
static void
|
|
g_zlib_decompressor_iface_init (GConverterIface *iface)
|
|
{
|
|
iface->convert = g_zlib_decompressor_convert;
|
|
iface->reset = g_zlib_decompressor_reset;
|
|
}
|