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/**
* Import/export ~/.dink/ as .zip
* Copyright (C) 2018 Sylvain Beucler
* This file is part of GNU FreeDink
* GNU FreeDink is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
* GNU FreeDink 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
* General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zip.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <errno.h>
#include <libgen.h>
extern int mkdir_rec(char* path);
int IsDir(char* path) {
struct stat st;
return (stat(path, &st) == 0 && S_ISDIR(st.st_mode));
}
int AddFileToZip(zip_t* archive, char* path, char* prefix) {
zip_source_t *s;
s = zip_source_file(archive, path, 0, -1);
if (s == NULL) {
fprintf(stderr, "error opening %s\n", path);
return 0;
}
char* zippath = path + strlen(prefix);
if (zip_file_add(archive, zippath, s, ZIP_FL_ENC_UTF_8) < 0) {
zip_source_free(s);
fprintf(stderr, "error adding %s: %s\n", path, zip_strerror(archive));
return 0;
}
return 1;
}
int AddPathToZip(zip_t* archive, char* path, char* prefix) {
//printf("processing %s\n", path);
struct stat st;
if (IsDir(path)) {
DIR* dir = opendir(path);
if (dir == NULL) {
perror("opendir");
return 0;
}
struct dirent *ent;
while ((ent = readdir(dir)) != NULL) {
//printf("dir: %s\n", ent->d_name);
if (strcmp(ent->d_name, ".") == 0) continue;
if (strcmp(ent->d_name, "..") == 0) continue;
char* subpath = malloc(strlen(path) + 1 + strlen(ent->d_name) + 1);
sprintf(subpath, "%s/%s", path, ent->d_name);
AddPathToZip(archive, subpath, prefix);
free(subpath);
}
closedir(dir);
} else {
AddFileToZip(archive, path, prefix);
}
return 1;
}
int emSavegamesExport(void) {
int errorp;
zip_t* archive = zip_open("savegames.zip", ZIP_CREATE|ZIP_TRUNCATE|ZIP_CHECKCONS, &errorp);
if (archive == NULL) {
zip_error_t error;
zip_error_init_with_code(&error, errorp);
fprintf(stderr, "error creating savegames.zip: %s\n", zip_error_strerror(&error));
zip_error_fini(&error);
return 0;
}
char* path = malloc(strlen(getenv("HOME"))+1+strlen(".dink")+1);
sprintf(path, "%s/%s", getenv("HOME"), ".dink");
char* prefix = malloc(strlen(getenv("HOME"))+1+strlen(".dink")+1+1);
sprintf(prefix, "%s/%s/", getenv("HOME"), ".dink");
AddPathToZip(archive, path, prefix);
free(path);
if (zip_get_num_entries(archive, 0) == 0) {
printf("No savegames found!\n");
return 0;
} else if (zip_close(archive) < 0) {
fprintf(stderr, "cannot write savegames.zip: %s\n", zip_strerror(archive));
return 0;
}
chmod("savegames.zip", 00666);
return 1;
}
void emSavegamesImport(void) {
int errorp;
zip_t* archive = zip_open("/savegames.zip", ZIP_RDONLY, &errorp);
if (archive == NULL) {
zip_error_t error;
zip_error_init_with_code(&error, errorp);
fprintf(stderr, "error opening savegames.zip: %s\n", zip_error_strerror(&error));
zip_error_fini(&error);
return;
}
char* prefix = malloc(strlen(getenv("HOME"))+1+strlen(".dink")+1+1);
sprintf(prefix, "%s/%s/", getenv("HOME"), ".dink");
for (int i = 0; i < zip_get_num_entries(archive, 0); i++) {
zip_stat_t sb;
zip_stat_index(archive, i, 0, &sb);
if (!(sb.valid & ZIP_STAT_NAME)
|| !(sb.valid & ZIP_STAT_SIZE)) {
continue;
}
if (sb.name[strlen(sb.name)-1] == '/') {
// will recursively create directories later
continue;
}
char* destFullPath = malloc(strlen(prefix)+strlen(sb.name)+1);
sprintf(destFullPath, "%s%s", prefix, sb.name);
char* dir = strdup(destFullPath);
dirname(dir);
int ret = mkdir_rec(dir);
if (ret < 0) printf("Error creating directory %s\n", dir);
free(dir);
if (ret < 0)
continue;
zip_file_t* file;
if ((file = zip_fopen_index(archive, i, 0)) == NULL) {
fprintf(stderr, "error opening file %d: %s\n", i, zip_strerror(archive));
continue;
}
FILE* out;
if ((out = fopen(destFullPath, "wb")) == NULL) {
perror("fopen");
continue;
}
unsigned char buf[4096]; // size from emscripten implementation
zip_uint64_t total = 0;
while (total < sb.size) {
zip_int64_t nb_read;
if ((nb_read = zip_fread(file, buf, sizeof(buf))) < 0) {
fprintf(stderr, "error reading %s: %s\n", sb.name, zip_file_strerror(file));
continue;
}
fwrite(buf, nb_read, 1, out);
total += nb_read;
}
fclose(out);
zip_fclose(file);
free(destFullPath);
}
}
#ifdef TEST
int main(void) {
return !emSavegamesExport();
}
#endif
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