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照片备份的方法

Posted on Edited on

图|经 PIL 处理后的照片

手机里的照片和视频越来越多，已经有几十 GB 了，需要把内容备份出来。

但是备份到自己电脑上吧，也不太合适，本身电脑的硬盘也不够大；单独买个移动硬盘是可行的，只要硬盘不坏不丢就好。

网盘目前还是能用的，可以把手机里的内容上传到网盘上来做备份。网盘有个最大的顾虑，就是安全问题，万一泄漏了网盘密码就不好了。

所以，上传到网盘上的内容，我想先加密下，再传到网盘上，这样即使网盘的密码泄漏了，还有文件的密码可以保护一下的。

生成缩略图

为了更快地从网盘上找到想要的加密图片，我把图片压缩到很小，只能看到个图片轮廓，通过缩略图来确认自己想看的最终原图：

thumbnail.py

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from PIL import Image
import getopt, sys
import os
import cv2

img_type_list = ["jpg", "jpeg", "bmp", "gif", "tiff", "png", "raw", "psd"]
vedio_type_list = ["mp4", "mpeg", "mpg", "avi", "mov", "wmv", "mkv", "rmvb", "flv"]

def video2pic(video, img):
    print("video2pic: {} to {}".format(video, img))
    cap = cv2.VideoCapture(video)
    # cap.set(1, int(cap.get(7)/2))
    cap.set(1,2)
    rval, frame = cap.read()
    if rval:
        cv2.imwrite(img, frame)
    cap.release()

def thumbnail(in_file,out_file,size):
    print("thumbnail: {} to {}, size: {}".format(in_file, out_file, str(size)))
    im = Image.open(in_file)
    im.thumbnail(size)
    im.save(out_file)

def usage():
    pass

def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], "ht:i:o:s:", ["help", "in=", "out=", "size="])
    except getopt.GetoptError as err:
        print(str(err))
        usage()
        sys.exit(2)
    
    _in = None
    _out = None
    _size = 96

    for o, a in opts:
        if o in ("-h", "--help"):
            usage()
            sys.exit()
        elif o in ("-i", "--in"):
            _in = a
        elif o in ("-o", "--out"):
            _out = a
        elif o in ("-s", "--size"):
            _size = int(a)
        else:
            assert False, "unhandled option"

    if (None == _in) or (not os.path.exists(_in)):
        print("in is not exists")
        sys.exit(2)
    if (None == _out):
        print("out is not exists")
        sys.exit(2)
    if not os.path.exists(_out):
        print("mkdir out dir")
        os.mkdir(_out)

    size = (_size, _size)
    

    if os.path.isdir(_in):
        files = os.listdir(_in)
        for f in files:
            src_file_path = _in+"/"+f
            
            if os.path.isfile(src_file_path):
                file_type = src_file_path.split(".")[-1].lower()
                if src_file_path.split(".")[-1].lower() in vedio_type_list:
                    thumbnail_file_path = _out+"/"+f+".jpg"
                    video2pic(src_file_path, thumbnail_file_path)
                    thumbnail(thumbnail_file_path, thumbnail_file_path, size)
                elif src_file_path.split(".")[-1].lower() in img_type_list:
                    thumbnail_file_path = _out+"/"+f
                    thumbnail(src_file_path, thumbnail_file_path, size)
                else:
                    print("not img or vedio file: " + src_file_path)
    
    else:
        print("in need be a dir.")

if __name__ == "__main__":
    main()

文件加密

encrypt.sh

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#!/bin/sh
# $1 is src dir
# $2 is the passwd

mkdir -p $1"/encrypt"

for i in `ls $1|grep -v encrypt`;
do
echo $i;
tar -zcf - $1"/"$i |openssl  des3 -salt -k $2 |dd of=$1"/encrypt/"$i".tgz.des3";
echo $i.tgz.des3;
done

for i in `ls $1|grep -v encrypt`;
do
a=`md5 $i`;
echo $a
echo $a >> $1"/encrypt/md5.txt";
b=`md5 $1"/encrypt/$i.tgz.des3"`; 
echo $b
echo $b >> $1"/encrypt/md5.txt";
done

文件解密

decrypt.sh

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#!/bin/sh
# $1 is src file
# $2 is the passwd

echo $1

dd if=$1 |openssl des3 -d -k $2 |tar zxf -

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