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304 lines
8.8 KiB
304 lines
8.8 KiB
/*
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* opensync - A plugin for file objects for the opensync framework
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* Copyright (C) 2004-2005 Armin Bauer <armin.bauer@opensync.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <opensync/opensync.h>
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#include "file.h"
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#include <string.h>
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#include <glib.h>
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static OSyncConvCmpResult compare_file(OSyncChange *leftchange, OSyncChange *rightchange)
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{
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osync_trace(TRACE_ENTRY, "%s(%p, %p)", __func__, leftchange, rightchange);
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fileFormat *leftfile = (fileFormat *)osync_change_get_data(leftchange);
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fileFormat *rightfile = (fileFormat *)osync_change_get_data(rightchange);
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osync_bool data_same = FALSE;
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osync_bool path_same = FALSE;
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if (!strcmp(osync_change_get_uid(leftchange), osync_change_get_uid(rightchange)))
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path_same = TRUE;
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osync_trace(TRACE_INTERNAL, "%i %i", leftfile->size, rightfile->size);
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if (leftfile->size == rightfile->size) {
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if (leftfile->data == rightfile->data) {
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data_same = TRUE;
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} else {
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if (!memcmp(leftfile->data, rightfile->data, leftfile->size))
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data_same = TRUE;
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}
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}
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if (data_same && path_same) {
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osync_trace(TRACE_EXIT, "%s: Same", __func__);
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return CONV_DATA_SAME;
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}
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if (path_same) {
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osync_trace(TRACE_EXIT, "%s: Similar", __func__);
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return CONV_DATA_SIMILAR;
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}
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osync_trace(TRACE_EXIT, "%s: Mismatch", __func__);
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return CONV_DATA_MISMATCH;
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}
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#ifdef STRESS_TEST
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static void create_file(OSyncChange *change)
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{
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osync_debug("FILE", 4, "start: %s", __func__);
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fileFormat *file_info = g_malloc0(sizeof(fileFormat));
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int file_size = g_random_int_range(0, 1000);
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osync_change_set_data(change, (char *)file_info, sizeof(fileFormat), TRUE);
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file_info->data = g_malloc0(file_size * 105 * sizeof(char));
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file_info->size = file_size * 100 * sizeof(char);
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char *datap = file_info->data;
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FILE *fd = fopen("/dev/urandom", "r");
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if (fd) {
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for (; file_size > 5; file_size--) {
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fread(datap, 100, 1, fd);
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datap += 100 * sizeof(char);
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}
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}
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fclose(fd);
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osync_change_set_uid(change, osync_rand_str(6));
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}
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#endif
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static osync_bool conv_file_to_plain(void *user_data, char *input, int inpsize, char **output, int *outpsize, osync_bool *free_input, OSyncError **error)
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{
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osync_trace(TRACE_ENTRY, "%s(%p, %p, %i, %p, %p, %p, %p)", __func__, user_data, input, inpsize, output, outpsize, free_input, error);
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g_assert(inpsize == sizeof(fileFormat));
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fileFormat *file = (fileFormat *)input;
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*free_input = FALSE;
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*output = file->data;
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*outpsize = file->size;
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osync_trace(TRACE_EXIT, "%s", __func__);
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return TRUE;
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}
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static osync_bool conv_plain_to_file(void *user_data, char *input, int inpsize, char **output, int *outpsize, osync_bool *free_input, OSyncError **error)
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{
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osync_trace(TRACE_ENTRY, "%s(%p, %p, %i, %p, %p, %p, %p)", __func__, user_data, input, inpsize, output, outpsize, free_input, error);
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fileFormat *file = osync_try_malloc0(sizeof(fileFormat), error);
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if (!file)
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goto error;
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file->data = input;
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file->size = inpsize;
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*free_input = FALSE;
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*output = (char *)file;
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*outpsize = sizeof(*file);
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osync_trace(TRACE_EXIT, "%s", __func__);
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return TRUE;
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error:
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osync_trace(TRACE_EXIT_ERROR, "%s: %s", __func__, osync_error_print(error));
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return FALSE;
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}
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static osync_bool marshall_file(const char *input, int inpsize, char **output, int *outpsize, OSyncError **error)
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{
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/* The marshall block will be a fileFormat struct, followed by the file data
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*
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* the 'data' field on fileFormat will be set to NULL
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*/
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/* Get our input file struct */
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g_assert(inpsize == sizeof(fileFormat));
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fileFormat *file = (fileFormat*)input;
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/* Allocate our block */
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int osize = sizeof(fileFormat) + file->size;
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char *out = osync_try_malloc0(osize, error);
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if (!out)
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goto error;
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/* Get the pointers to the output data: */
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/* fileFormat struct in the beginning */
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fileFormat *outfile = (fileFormat*)out;
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/* file data immediately after outfile */
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char *outdata = ((char*)outfile) + sizeof(fileFormat);
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/* Copy the data: */
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/* file struct */
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memcpy(outfile, file, sizeof(fileFormat));
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outfile->data = NULL;
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/* file data */
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if (file->size > 0)
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memcpy(outdata, file->data, file->size);
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*output = out;
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*outpsize = osize;
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return TRUE;
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error:
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return FALSE;
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}
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static osync_bool demarshall_file(const char *input, int inpsize, char **output, int *outpsize, OSyncError **error)
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{
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/* Get file struct */
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g_assert(inpsize >= sizeof(fileFormat));
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fileFormat *file = (fileFormat*)input;
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/* get file data */
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g_assert(inpsize == sizeof(fileFormat) + file->size);
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const char *filedata = input + sizeof(fileFormat);
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fileFormat *newfile = osync_try_malloc0(sizeof(fileFormat), error);
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if (!newfile)
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goto error;
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memcpy(newfile, file, sizeof(fileFormat));
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if (file->size > 0) {
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newfile->data = osync_try_malloc0(file->size, error);
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if (!newfile->data)
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goto error_free_file;
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memcpy(newfile->data, filedata, file->size);
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} else
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newfile->data = NULL;
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*output = (char*)newfile;
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*outpsize = sizeof(fileFormat);
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return TRUE;
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error_free_file:
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g_free(newfile);
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error:
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return FALSE;
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}
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static void destroy_file(char *input, size_t inpsize)
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{
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osync_trace(TRACE_ENTRY, "%s(%p, %i)", __func__, input, inpsize);
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g_assert(inpsize == sizeof(fileFormat));
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fileFormat *file = (fileFormat *)input;
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g_free(file->data);
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g_free(file);
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osync_trace(TRACE_EXIT, "%s", __func__);
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}
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static void duplicate_file(OSyncChange *change)
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{
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osync_trace(TRACE_ENTRY, "%s(%p)", __func__, change);
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char *newuid = g_strdup_printf ("%s-dupe", osync_change_get_uid(change));
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osync_change_set_uid(change, newuid);
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g_free(newuid);
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osync_trace(TRACE_EXIT, "%s", __func__);
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}
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static osync_bool copy_file(const char *input, int inpsize, char **output, int *outpsize)
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{
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osync_trace(TRACE_ENTRY, "%s(%p, %i, %p, %p)", __func__, input, inpsize, output, outpsize);
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fileFormat *oldfile = (fileFormat *)input;
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fileFormat *newfile = g_malloc0(sizeof(fileFormat));
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newfile->groupid = oldfile->groupid;
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newfile->mode = oldfile->mode;
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newfile->userid = oldfile->userid;
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newfile->size = oldfile->size;
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newfile->last_mod = oldfile->last_mod;
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if (oldfile->size) {
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newfile->data = g_malloc0(oldfile->size);
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memcpy(newfile->data, oldfile->data, oldfile->size);
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}
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*output = (char *)newfile;
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*outpsize = inpsize;
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osync_trace(TRACE_EXIT, "%s", __func__);
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return TRUE;
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}
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static void create_file(OSyncChange *change)
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{
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osync_debug("FILE", 4, "start: %s", __func__);
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fileFormat *newfile = g_malloc0(sizeof(fileFormat));
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char *data = osync_rand_str(g_random_int_range(1, 100));
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newfile->data = data;
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newfile->size = strlen(data) + 1;
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osync_change_set_data(change, (char *)newfile, sizeof(newfile), TRUE);
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if (!osync_change_get_uid(change))
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osync_change_set_uid(change, osync_rand_str(6));
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}
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static time_t revision_file(OSyncChange *change, OSyncError **error)
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{
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osync_trace(TRACE_ENTRY, "%s(%p, %p)", __func__, change, error);
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fileFormat *filechange = (fileFormat *)osync_change_get_data(change);
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time_t lastmod = filechange->last_mod;
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osync_trace(TRACE_EXIT, "%s: %i", __func__, lastmod);
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return lastmod;
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}
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static char *print_file(OSyncChange *change)
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{
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osync_debug("FILE", 4, "start: %s", __func__);
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fileFormat *file = (fileFormat *)osync_change_get_data(change);
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char *printable = g_strdup_printf ("File: %s\nSize: %i", osync_change_get_uid(change), file ? file->size : 0);
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return printable;
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}
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void get_info(OSyncEnv *env)
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{
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osync_env_register_objtype(env, "data");
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osync_env_register_objformat(env, "data", "file");
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osync_env_format_set_compare_func(env, "file", compare_file);
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osync_env_format_set_duplicate_func(env, "file", duplicate_file);
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osync_env_format_set_destroy_func(env, "file", destroy_file);
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osync_env_format_set_print_func(env, "file", print_file);
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osync_env_format_set_copy_func(env, "file", copy_file);
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osync_env_format_set_create_func(env, "file", create_file);
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osync_env_format_set_revision_func(env, "file", revision_file);
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osync_env_format_set_marshall_func(env, "file", marshall_file);
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osync_env_format_set_demarshall_func(env, "file", demarshall_file);
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#ifdef STRESS_TEST
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osync_env_format_set_create_func(env, "file", create_file);
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#endif
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osync_env_register_converter(env, CONVERTER_DECAP, "file", "plain", conv_file_to_plain);
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osync_env_register_converter(env, CONVERTER_ENCAP, "plain", "file", conv_plain_to_file);
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}
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