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/*
* Copyright (C) 2012 Team XBMC
* http://www.xbmc.org
*
* This Program 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 2, or (at your option)
* any later version.
*
* This Program 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 XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <utime.h>
#include <zip.h>
#include "XBMCApp.h"
typedef struct stat Stat;
static int do_mkdir(const char *path)
{
Stat st;
int status = 0;
if (stat(path, &st) != 0)
{
/* Directory does not exist */
if (mkdir(path, 0755) != 0)
status = -1;
}
else if (!S_ISDIR(st.st_mode))
{
errno = ENOTDIR;
status = -1;
}
return(status);
}
int mkpath(const char *path)
{
char *pp;
char *sp;
int status;
char *copypath = strdup(path);
status = 0;
pp = copypath;
while (status == 0 && (sp = strchr(pp, '/')) != 0)
{
if (sp != pp)
{
/* Neither root nor double slash in path */
*sp = '\0';
status = do_mkdir(copypath);
*sp = '/';
}
pp = sp + 1;
}
if (status == 0)
status = do_mkdir(path);
free(copypath);
return (status);
}
int extract_to_cache(const char *archive, const char *cache_path)
{
struct zip *ziparchive;
struct zip_file *zipfile;
struct zip_stat zipstat;
char buf[4096];
int err;
int len;
int fd;
int dirname_len;
uint64_t sum;
char *full_path;
char *dir_name;
Stat localfile;
utimbuf modified;
CXBMCApp::android_printf("unzip: Preparing to cache. This could take a while...");
if ((ziparchive = zip_open(archive, 0, &err)) == NULL)
{
zip_error_to_str(buf, sizeof(buf), err, errno);
CXBMCApp::android_printf("unzip error: can't open archive %s/n",archive);
return 1;
}
mkpath(cache_path);
for (size_t i = 0; i < zip_get_num_entries(ziparchive, 0); i++)
{
if (zip_stat_index(ziparchive, i, 0, &zipstat) != 0)
{
CXBMCApp::android_printf("unzip error: can't open entry: %i/n",i);
continue;
}
if(strncmp (zipstat.name,"assets/",7) != 0)
continue;
if(strncmp (zipstat.name,"assets/python2.6",16) == 0)
continue;
modified.modtime = modified.actime = zipstat.mtime;
full_path = (char*)malloc( sizeof(char*) * (strlen(cache_path) + 1 + strlen(zipstat.name) + 1));
sprintf(full_path, "%s/%s",cache_path,zipstat.name);
if (zipstat.name[strlen(zipstat.name) - 1] == '/')
{
mkpath(full_path);
free(full_path);
continue;
}
zipfile = zip_fopen_index(ziparchive, i, 0);
if (!zipfile)
{
CXBMCApp::android_printf("unzip error: can't open index");
free(full_path);
continue;
}
if (stat(full_path, &localfile) != 0)
{
dirname_len = strrchr(zipstat.name,'/') - zipstat.name;
dir_name = (char*)malloc( sizeof(char*) * (strlen(cache_path) + 1 + dirname_len + 1));
strncpy(dir_name, full_path, strlen(cache_path) + dirname_len + 1);
dir_name[strlen(cache_path) + dirname_len + 1] = '\0';
mkpath(dir_name);
free(dir_name);
}
// watch this compare, zipstat.mtime is time_t which is a signed long
else if (localfile.st_mtime == (unsigned long)zipstat.mtime)
{
free(full_path);
continue;
}
fd = open(full_path, O_RDWR | O_TRUNC | O_CREAT, 0644);
if(fd < 0)
{
CXBMCApp::android_printf("unzip error: could not open %s",full_path);
free(full_path);
continue;
}
sum = 0;
while (sum != zipstat.size)
{
len = zip_fread(zipfile, buf, 4096);
if (len < 0)
{
CXBMCApp::android_printf("unzip error: no data in %s",full_path);
free(full_path);
continue;
}
write(fd, buf, len);
sum += len;
}
close(fd);
zip_fclose(zipfile);
if (stat(full_path, &localfile) == 0)
{
// save the zip time. this way we know for certain if we need to refresh.
utime(full_path, &modified);
}
else
{
CXBMCApp::android_printf("unzip error: failed to extract %s",full_path);
}
free(full_path);
}
if (zip_close(ziparchive) == -1)
CXBMCApp::android_printf("unzip error: can't close zip archive `%s'/n", archive);
return 0;
}
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