Created
October 17, 2017 13:56
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| import struct | |
| import socket | |
| import random | |
| client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) | |
| client_socket.connect(('localhost', 1717)) | |
| def tryRead() : | |
| flag = False | |
| readBannerBytes = 0 | |
| bannerLength = 2 | |
| readFrameBytes = 0 | |
| frameBodyLengthRemaining = 0 | |
| frameBody = '' | |
| banner = { | |
| 'version':0, | |
| 'length':0, | |
| 'pid':0, | |
| 'realWidth':0, | |
| 'realHeight':0, | |
| 'virtualWidth':0, | |
| 'virtualHeight':0, | |
| 'orientation':0, | |
| 'quirks':0 | |
| } | |
| while True: | |
| chunk = client_socket.recv(4084) | |
| if len(chunk) == 0: | |
| continue | |
| print('chunk(length=%d)' % len(chunk)) | |
| cursor = 0 | |
| while cursor < len(chunk): | |
| if (readBannerBytes < bannerLength) : | |
| print(readBannerBytes,"---", bannerLength) | |
| if readBannerBytes == 0: | |
| banner['version'] = int(chunk[cursor].encode('hex'), 16) | |
| elif readBannerBytes == 1: | |
| banner['length'] = bannerLength = int(chunk[cursor].encode('hex'), 16) | |
| elif readBannerBytes >= 2 and readBannerBytes <= 5: | |
| banner['pid'] = int(chunk[cursor].encode('hex'), 16) | |
| elif readBannerBytes == 23: | |
| banner['quirks'] = int(chunk[cursor].encode('hex'), 16) | |
| cursor += 1 | |
| readBannerBytes += 1 | |
| if readBannerBytes == bannerLength: | |
| print('banner', banner) | |
| elif readFrameBytes < 4: | |
| frameBodyLengthRemaining += (int(chunk[cursor].encode('hex'), 16) << (readFrameBytes * 8)) | |
| frameBodyLengthRemaining_orig = frameBodyLengthRemaining | |
| cursor += 1 | |
| readFrameBytes += 1 | |
| print('headerbyte%d(val=%d)' %(readFrameBytes, frameBodyLengthRemaining)) | |
| else: | |
| # if this chunk has data of next image | |
| if len(chunk) - cursor >= frameBodyLengthRemaining: | |
| print('bodyfin(len=%d,cursor=%d)' % (frameBodyLengthRemaining, cursor)) | |
| frameBody = frameBody + chunk[cursor:(cursor+frameBodyLengthRemaining)] | |
| if frameBody[0] != '\xff' or frameBody[1] != '\xd8': | |
| print("Frame body does not strt with JPEG header", frameBody[0], frameBody[1]) | |
| exit() | |
| arr.append(frameBody) | |
| if len(arr) == 1: | |
| return 0 | |
| cursor += frameBodyLengthRemaining | |
| frameBodyLengthRemaining = 0 | |
| readFrameBytes = 0 | |
| frameBody = '' | |
| else: | |
| # else this chunk is still for the current image | |
| print('body(len=%d)' % ( len(chunk) - cursor), 'remaining = %d' % frameBodyLengthRemaining) | |
| frameBody = frameBody + chunk[cursor:len(chunk)] | |
| frameBodyLengthRemaining -= (len(chunk) - cursor) | |
| readFrameBytes += len(chunk) - cursor | |
| cursor = len(chunk) | |
| arr = [] | |
| tryRead() | |
| for i in arr: | |
| with open("ss_"+str(random.randint(0, 10000))+".jpeg", "wb") as f: | |
| f.write(i) |
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