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440 lines
9.0 KiB
440 lines
9.0 KiB
/*
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Copyright (c) 2000 Simon Hausmann <hausmann@kde.org>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "marshal.h"
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#include <glib.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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/* The code in previous revisions was broken on little endian system, also see KDE bug #32463 */
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/* The current code was not tested on big endian system, so it could be another issue and big */
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/* endian systems would need the same code as the little endian ones */
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#include <endian.h>
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dcop_data *dcop_data_new()
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{
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dcop_data *res = g_new( dcop_data, 1 );
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res->ptr = 0;
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res->size = 0;
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res->cur = 0;
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res->ref = 0;
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return res;
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}
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void dcop_data_destroy( dcop_data *data )
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{
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g_assert( data->ref == 0 );
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g_free( data->ptr );
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g_free( data );
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}
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dcop_data *dcop_data_copy( dcop_data *data )
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{
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dcop_data *res = dcop_data_new();
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res->ptr = (char *)g_malloc( data->size );
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res->size = data->size;
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dcop_data_reset( res );
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memcpy( res->ptr, data->ptr, data->size );
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return res;
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}
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static gboolean dcop_data_check_size( dcop_data *data, unsigned int size )
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{
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if ( data->size - ( data->cur - data->ptr ) < size )
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return FALSE;
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return TRUE;
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}
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gboolean dcop_marshal_raw( dcop_data *data, const void *ptr, unsigned int size )
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{
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unsigned int relptr = data->cur - data->ptr;
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data->ptr = (char *)g_realloc( data->ptr, data->size + size );
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if ( data->ptr == 0 )
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return FALSE;
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data->cur = data->ptr + relptr;
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memcpy( data->cur, ptr, size );
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data->cur += size;
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data->size += size;
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return TRUE;
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}
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gboolean dcop_marshal_uint32( dcop_data *data, unsigned int val )
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{
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unsigned char buf[4];
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g_assert( sizeof( unsigned int ) == 4 );
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#ifdef WORDS_BIGENDIAN
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buf[0] = val;
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buf[1] = val >> 8;
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buf[2] = val >> 16;
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buf[3] = val >> 24;
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#else
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buf[3] = val;
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buf[2] = val >> 8;
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buf[1] = val >> 16;
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buf[0] = val >> 24;
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#endif
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return dcop_marshal_raw( data, buf, 4 );
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}
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gboolean dcop_demarshal_uint32( dcop_data *data, unsigned int *val )
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{
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g_assert( sizeof( unsigned int ) == 4 );
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if ( !dcop_data_check_size( data, 4 ) )
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return FALSE;
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#ifdef WORDS_BIGENDIAN
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*val = (data->cur[3] << 24) |
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(data->cur[2] << 16) |
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(data->cur[1] << 8) |
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data->cur[0];
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#else
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*val = (data->cur[0] << 24) |
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(data->cur[1] << 16) |
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(data->cur[2] << 8) |
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data->cur[3];
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#endif
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data->cur += 4;
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return TRUE;
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}
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gboolean dcop_marshal_string( dcop_data *data, const gchar *str )
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{
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size_t l = 0;
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if ( str )
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l = strlen( str ) + 1;
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if( !dcop_marshal_uint32( data, l ) )
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return FALSE;
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if ( str )
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return dcop_marshal_raw( data, str, l );
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else
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return TRUE;
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}
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gboolean dcop_demarshal_string( dcop_data *data, gchar **str )
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{
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unsigned int l = 0;
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gchar *res = 0;
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g_assert( str );
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if ( !dcop_demarshal_uint32( data, &l ) )
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return FALSE;
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if ( !dcop_data_check_size( data, l ) )
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return FALSE;
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res = (char *)g_malloc( l );
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memcpy( res, data->cur, l );
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data->cur += l;
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*str = res;
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return TRUE;
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}
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gboolean dcop_marshal_string16( dcop_data *data, const gchar *str )
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{
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size_t l = 0;
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size_t c = 0;
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char *tmp = 0;
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const char *src = str;
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char *dst = 0;
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if ( str )
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l = strlen( str ) * 2;
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else
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{
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/* null marker*/
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guint32 s = 0xffffffff;
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return dcop_marshal_uint32( data, s );
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}
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if( !dcop_marshal_uint32( data, l ) )
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return FALSE;
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if ( str )
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{
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dst = tmp = (char *)g_malloc( l );
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c = strlen( str );
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while ( c-- )
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{
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*dst++ = 0;
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*dst++ = *src++;
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}
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dcop_marshal_raw( data, tmp, l );
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g_free( tmp );
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}
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return TRUE;
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}
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gboolean dcop_demarshal_string16( dcop_data *data, gchar **str )
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{
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unsigned int l = 0;
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unsigned int size = 0;
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char *res = 0;
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char *p = 0;
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assert( str );
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if ( !dcop_demarshal_uint32( data, &l ) )
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return FALSE;
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/* null marker*/
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if ( l == 0xffffffff )
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{
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*str = 0;
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return TRUE;
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}
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if ( !dcop_data_check_size( data, l ) )
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return FALSE;
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size = ( l / 2 );
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p = res = (char *)g_malloc( size + 1 );
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while( size-- )
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{
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data->cur++;
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*p++ = *data->cur++;
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}
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*p = '\0';
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*str = res;
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return TRUE;
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}
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gboolean dcop_marshal_bytearray( dcop_data *data, const gchar *str, size_t size )
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{
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if( !dcop_marshal_uint32( data, size ) )
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return FALSE;
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if ( str )
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return dcop_marshal_raw( data, str, size );
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else
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return TRUE;
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}
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gboolean dcop_demarshal_bytearray( dcop_data *data, gchar **str, size_t *size )
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{
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unsigned int l = 0;
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gchar *res = 0;
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g_assert( str );
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if ( !dcop_demarshal_uint32( data, &l ) )
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return FALSE;
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if ( !dcop_data_check_size( data, l ) )
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return FALSE;
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res = (char *)g_malloc( l );
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memcpy( res, data->cur, l );
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data->cur += l;
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*str = res;
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*size = l;
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return TRUE;
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}
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gboolean dcop_marshal_data( dcop_data *data, dcop_data *other )
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{
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if ( !dcop_marshal_uint32( data, other->size ) )
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return FALSE;
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return dcop_marshal_raw( data, other->ptr, other->size );
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}
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gboolean dcop_demarshal_data( dcop_data *data, dcop_data **other )
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{
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dcop_data *res = dcop_data_new();
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char *tmp = 0;
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unsigned int l = 0;
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if ( !dcop_demarshal_uint32( data, &l ) )
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return FALSE;
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if ( !dcop_data_check_size( data, l ) )
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return FALSE;
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tmp = (char *)malloc( l );
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memcpy( tmp, data->cur, l );
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data->cur += l;
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dcop_data_assign( res, tmp, l );
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dcop_data_ref( res );
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*other = res;
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return True;
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}
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gboolean dcop_marshal_stringlist( dcop_data *data, GList *list )
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{
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GList *it = g_list_first( list );
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if ( !dcop_marshal_uint32( data, g_list_length( list ) ) )
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return FALSE;
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while ( it )
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{
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if ( !dcop_marshal_string( data, (gchar *)it->data ) )
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return FALSE;
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it = g_list_next( it );
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}
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return TRUE;
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}
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gboolean dcop_demarshal_stringlist( dcop_data *data, GList**list )
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{
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unsigned int count = 0;
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GList *res = 0;
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unsigned int i = 0;
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gchar *str = 0;
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*list = 0;
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if ( !dcop_demarshal_uint32( data, &count ) )
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return FALSE;
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for ( i = 0; i < count; ++i )
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{
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if ( !dcop_demarshal_string( data, &str ) )
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{
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dcop_list_free( res );
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return FALSE;
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}
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res = g_list_append( res, str );
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}
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*list = res;
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return TRUE;
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}
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gboolean dcop_marshal_stringlist16( dcop_data *data, GList *list )
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{
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GList *it = g_list_first( list );
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if ( !dcop_marshal_uint32( data, g_list_length( list ) ) )
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return False;
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while ( it )
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{
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if ( !dcop_marshal_string16( data, (gchar *)it->data ) )
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return FALSE;
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it = g_list_next( it );
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}
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return TRUE;
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}
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gboolean dcop_demarshal_stringlist16( dcop_data *data, GList **list )
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{
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unsigned int count = 0;
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GList *res = 0;
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unsigned int i = 0;
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char *str = 0;
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*list = 0;
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if ( !dcop_demarshal_uint32( data, &count ) )
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return FALSE;
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for ( i = 0; i < count; ++i )
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{
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if ( !dcop_demarshal_string16( data, &str ) )
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{
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dcop_list_free( res );
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return FALSE;
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}
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res = g_list_append( res, str );
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}
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*list = res;
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return TRUE;
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}
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void dcop_data_assign( dcop_data *data, char *d, unsigned int size )
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{
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data->ptr = data->cur = d;
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data->size = size;
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}
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gboolean dcop_marshal_boolean( dcop_data *data, gboolean val )
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{
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guint8 i = (guint8)val;
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return dcop_marshal_uint8( data, i );
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}
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gboolean dcop_demarshal_boolean( dcop_data *data, gboolean *val )
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{
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guint8 i;
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if ( !dcop_demarshal_uint8( data, &i ) )
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return FALSE;
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*val = (gboolean)i;
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return TRUE;
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}
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gboolean dcop_marshal_uint8( dcop_data *data, guint8 val )
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{
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return dcop_marshal_raw( data, &val, 1 );
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}
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gboolean dcop_demarshal_uint8( dcop_data *data, guint8 *val )
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{
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if ( !dcop_data_check_size( data, 1 ) )
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return FALSE;
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*val = *data->cur++;
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return TRUE;
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}
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dcop_data *dcop_data_ref( dcop_data *data ) { data->ref++; return data; }
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void dcop_data_deref( dcop_data *data ) { if ( !--data->ref ) dcop_data_destroy( data ); }
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void dcop_data_reset( dcop_data *data ) { data->cur = data->ptr; }
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