# coding=utf-8
import struct
import math
#import random
import os
import subprocess
import logging
from StringIO import StringIO
from settings import Settings
from database import *
from framework import *
try: # Windows needs stdio set for binary mode.
import msvcrt
msvcrt.setmode(0, os.O_BINARY) # stdin = 0
msvcrt.setmode(1, os.O_BINARY) # stdout = 1
except ImportError:
pass
def processImage(post, data, t, originalname, spoiler=False):
"""
Take all post data from <post>, process uploaded file in <data>, and calculate
file names using datetime <t>
Returns updated <post> with file and thumb values
"""
board = Settings._.BOARD
used_filetype = None
# get image information
content_type, width, height, size, extra = getImageInfo(data)
# check the size is fine
if size > int(board["maxsize"])*1024:
raise UserError, _("File too big. The maximum file size is: %s") % board['maxsize']
# check if file is supported
for filetype in board['filetypes']:
if content_type == filetype['mime']:
used_filetype = filetype
break
if not used_filetype:
raise UserError, _("File type not supported.")
# check if file is already posted
is_duplicate = checkFileDuplicate(data)
if checkFileDuplicate(data)[0]:
raise UserError, _("This image has already been posted %s.") % ('<a href="' + Settings.BOARDS_URL + board['dir'] + '/res/' + str(is_duplicate[1]) + '.html#' + str(is_duplicate[2]) + '">' + _("here") + '</a>')
# prepare file names
if used_filetype['preserve_name'] == '1':
file_base = os.path.splitext(originalname)[0] # use original filename
else:
file_base = '%d' % int(t * 1000) # generate timestamp name
file_name = file_base + "." + used_filetype['ext']
file_thumb_name = file_base + "s.jpg"
# prepare paths
file_path = Settings.IMAGES_DIR + board["dir"] + "/src/" + file_name
file_thumb_path = Settings.IMAGES_DIR + \
board["dir"] + "/thumb/" + file_thumb_name
file_mobile_path = Settings.IMAGES_DIR + \
board["dir"] + "/mobile/" + file_thumb_name
file_cat_path = Settings.IMAGES_DIR + \
board["dir"] + "/cat/" + file_thumb_name
# remove EXIF data if necessary for privacy
if content_type == 'image/jpeg':
data = removeExifData(data)
# write file
f = open(file_path, "wb")
try:
f.write(data)
finally:
f.close()
# set maximum dimensions
maxsize = int(board['thumb_px'])
post["file"] = file_name
post["image_width"] = width
post["image_height"] = height
# Do we need to thumbnail it?
if not used_filetype['image']:
# make thumbnail
logging.debug("Generating thumbnail")
file_thumb_width, file_thumb_height = getThumbDimensions(
width, height, maxsize)
try:
if used_filetype['ffmpeg_thumb'] == '1':
# use ffmpeg to make thumbnail
if used_filetype['mime'][:5] == 'video':
# Create preview for video AND spoiler it if necessary
call_wrap([
Settings.FFMPEG_PATH, '-strict', '-2', '-ss', '0', '-i', file_path,
'-v', 'quiet', '-an', '-vframes', '1', '-f', 'mjpeg', '-vf', 'scale=%d:%d' % (
file_thumb_width, file_thumb_height),
'-threads', '1', file_thumb_path])
if spoiler:
call_wrap([Settings.CONVERT_PATH, file_thumb_path, "-limit", "thread",
"1", "-background", "white", "-flatten", "-resize",
"%dx%d" % (file_thumb_width, file_thumb_height), "-blur", "0x12",
"-gravity", "center", "-fill", "rgba(0,0,0, .6)",
"-draw", "rectangle 0,%d,%d,%d" % ((file_thumb_height/2)-10, file_thumb_width, (file_thumb_height/2)+7),
"-fill", "white", "-font", "Liberation-Sans", "-annotate", "0", "Alerta de spoiler",
"-quality", str(Settings.THUMB_QUALITY), file_thumb_path])
elif used_filetype['mime'][:5] == 'audio':
# we do an exception and use png for audio waveform thumbnails since they
# 1. are smaller 2. allow for transparency
file_thumb_name = file_thumb_name[:-3] + "png"
file_thumb_path = file_thumb_path[:-3] + "png"
file_mobile_path = file_mobile_path[:-3] + "png"
file_cat_path = file_cat_path[:-3] + "png"
if int(board['thumb_px']) > 149:
file_thumb_width = board['thumb_px']
file_thumb_height = float(int(board['thumb_px'])/2)
else:
file_thumb_width = 150
file_thumb_height = 75
call_wrap([Settings.FFMPEG_PATH, '-t', '300', '-i', file_path,
'-filter_complex', 'showwavespic=s=%dx%d:split_channels=1' % (
int(file_thumb_width), int(file_thumb_height)),
'-frames:v', '1', '-threads', '1', file_thumb_path])
else:
# use imagemagick to make thumbnail
args = [Settings.CONVERT_PATH, file_path, "-limit", "thread", "1", "-background",
"white", "-flatten", "-resize", "%dx%d" % (file_thumb_width, file_thumb_height)]
if spoiler:
args += ["-blur", "0x12", "-gravity", "center", "-fill", "rgba(0,0,0, .6)", "-draw", "rectangle 0,%d,%d,%d" % (
(file_thumb_height/2)-10, file_thumb_width, (file_thumb_height/2)+7), "-fill", "white",
"-font", "Liberation-Sans", "-annotate", "0", "Alerta de spoiler"]
args += ["-quality", str(Settings.THUMB_QUALITY), file_thumb_path]
# generate thumbnails
call_wrap(args)
except subprocess.CalledProcessError, e:
os.remove(file_path)
logging.error("Thumbnail creation failure: " + e.output)
raise UserError, _("Thumbnail creation failure.") + ' ('+str(e.returncode)+')'
# check if thumbnail was truly created
try:
open(file_thumb_path)
except:
os.remove(file_path)
raise UserError, _("Thumbnail creation failure.")
# create extra thumbnails (catalog/mobile)
subprocess.call([Settings.CONVERT_PATH, file_thumb_path, "-limit", "thread",
"1", "-resize", "100x100", "-quality", "75", file_mobile_path])
if not post["parentid"]:
subprocess.call([Settings.CONVERT_PATH, file_thumb_path, "-limit",
"thread", "1", "-resize", "150x150", "-quality", "60", file_cat_path])
post["thumb"] = file_thumb_name
post["thumb_width"] = file_thumb_width
post["thumb_height"] = file_thumb_height
else:
# Don't thumbnail and use mime image
if board["board_type"] == '0':
post["thumb"] = used_filetype['image']
post["thumb_width"] = '120'
post["thumb_height"] = '120'
else:
post["thumb"] = used_filetype['image'].split(".")[0] + '_small.png'
post["thumb_width"] = '90'
post["thumb_height"] = '90'
# calculate size (bytes)
post["file_size"] = len(data)
# add additional metadata, if any
post["message"] += extraInfo(content_type, file_name, file_path)
# file md5
post["file_hex"] = getMD5(data)
return post
def extraInfo(mime, file_name, file_path):
board = Settings._.BOARD
if mime in ['audio/ogg', 'audio/opus', 'audio/mpeg', 'video/webm', 'video/mp4']:
info = ffprobe_f(file_path)
extra = {}
credit_str = ""
if mime == 'video/webm':
for s in info['streams']:
if 'width' in s:
stream = s
else:
stream = info['streams'][0]
extra['codec'] = stream.get('codec_name', '').encode('utf-8')
format = info['format']
if 'bit_rate' in format:
extra['codec'] += ' ~%d kbps' % int(int(format['bit_rate']) / 1000)
if 'tags' in format:
extra['title'] = format['tags'].get(
'TITLE', format['tags'].get('title', '')).encode('utf-8')
extra['artist'] = format['tags'].get(
'ARTIST', format['tags'].get('artist', '')).encode('utf-8')
if extra['title'] or extra['artist']:
credit_str = ' - '.join((extra['artist'],
extra['title'])) + ' '
if 'tags' in stream:
extra['title'] = stream['tags'].get('TITLE', '').encode('utf-8')
extra['artist'] = stream['tags'].get('ARTIST', '').encode('utf-8')
if extra['title'] or extra['artist']:
credit_str = ' - '.join((extra['artist'],
extra['title'])) + ' '
return '<hr /><small>%s(%s)</small>' % (credit_str, extra['codec'])
elif mime in ['audio/mod', 'audio/xm', 'audio/s3m']:
ext = mime.split('/')[1].upper()
url = '/cgi/play/%s/%s' % (board['dir'], file_name)
return '<hr /><small>Módulo tracker (%s) [<a href="%s" target="_blank">Click para escuchar</a>]</small>' % (ext, url)
return ''
def getImageInfo(data):
data = str(data)
size = len(data)
height = -1
width = -1
extra = {}
content_type = ""
# handle GIFs
if (size >= 10) and data[:6] in ("GIF87a", "GIF89a"):
# Check to see if content_type is correct
content_type = "image/gif"
w, h = struct.unpack("<HH", data[6:10])
width = int(w)
height = int(h)
# See PNG 2. Edition spec (http://www.w3.org/TR/PNG/)
# Bytes 0-7 are below, 4-byte chunk length, then 'IHDR'
# and finally the 4-byte width, height
elif ((size >= 24) and data.startswith("\211PNG\r\n\032\n")
and (data[12:16] == "IHDR")):
content_type = "image/png"
w, h = struct.unpack(">LL", data[16:24])
width = int(w)
height = int(h)
# Maybe this is for an older PNG version.
elif (size >= 16) and data.startswith("\211PNG\r\n\032\n"):
# Check to see if we have the right content type
content_type = "image/png"
w, h = struct.unpack(">LL", data[8:16])
width = int(w)
height = int(h)
# handle JPEGs
elif (size >= 2) and data.startswith("\377\330"):
content_type = "image/jpeg"
jpeg = StringIO(data)
jpeg.read(2)
b = jpeg.read(1)
try:
while (b and ord(b) != 0xDA):
while (ord(b) != 0xFF):
b = jpeg.read
while (ord(b) == 0xFF):
b = jpeg.read(1)
if (ord(b) >= 0xC0 and ord(b) <= 0xC3):
jpeg.read(3)
h, w = struct.unpack(">HH", jpeg.read(4))
break
else:
jpeg.read(int(struct.unpack(">H", jpeg.read(2))[0])-2)
b = jpeg.read(1)
width = int(w)
height = int(h)
except struct.error:
pass
except ValueError:
pass
# handle WebM
elif (size >= 4) and data.startswith("\x1A\x45\xDF\xA3"):
content_type = "video/webm"
info = ffprobe(data)
# handle mp4
elif (size >= 8) and data[4:12] in ["ftypmp42", "ftypisom"]:
content_type = "video/mp4"
# handle ogg formats (vorbis/opus)
elif (size >= 64) and data[:4] == "OggS":
if data[28:35] == "\x01vorbis":
content_type = "audio/ogg"
elif data[28:36] == "OpusHead":
content_type = "audio/opus"
# handle MP3
elif (size >= 64) and (data[:3] == "ID3" or data[:3] == "\xFF\xFB"):
content_type = "audio/mpeg"
# handle MOD
elif (size >= 64) and data[1080:1084] == "M.K.":
content_type = "audio/mod"
# handle XM
elif (size >= 64) and data.startswith("Extended Module:"):
content_type = "audio/xm"
# handle S3M
elif (size >= 64) and data[25:32] == "\x00\x00\x00\x1A\x10\x00\x00":
content_type = "audio/s3m"
# handle PDF
elif (size >= 4) and data[:7] == "%PDF-1.":
content_type = "application/pdf"
# handle Shockwave Flash
elif (size >= 3) and data[:3] in ["CWS", "FWS"]:
content_type = "application/x-shockwave-flash"
# handle torrent
elif (size >= 11) and data[:11] == "d8:announce":
content_type = "application/x-bittorrent"
# handle PDF
elif (size >= 2) and data[:2] == "PK":
content_type = "application/epub+zip"
if content_type.startswith("video"):
info = ffprobe(data)
for stream in info['streams']:
if 'width' in stream:
width = stream['width']
height = stream['height']
break
return content_type, width, height, size, extra
def ffprobe(data):
import json
p = subprocess.Popen([Settings.FFPROBE_PATH, '-v', 'quiet', '-print_format', 'json', '-show_format', '-show_streams', '-'],
stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
out = p.communicate(input=data)[0]
return json.loads(out)
def ffprobe_f(filename):
import json
p = subprocess.Popen([Settings.FFPROBE_PATH, '-v', 'quiet', '-print_format', 'json', '-show_format', '-show_streams', filename],
stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
out = p.communicate()[0]
return json.loads(out)
def call_wrap(args):
subprocess.check_output(args, stderr=subprocess.STDOUT)
def getThumbDimensions(width, height, maxsize):
"""
Calculate dimensions to use for a thumbnail with maximum width/height of
<maxsize>, keeping aspect ratio
"""
wratio = (float(maxsize) / float(width))
hratio = (float(maxsize) / float(height))
if (width <= maxsize) and (height <= maxsize):
return width, height
else:
if (wratio * height) < maxsize:
thumb_height = math.ceil(wratio * height)
thumb_width = maxsize
else:
thumb_width = math.ceil(hratio * width)
thumb_height = maxsize
return int(thumb_width), int(thumb_height)
def checkFileDuplicate(data):
"""
Check that the file <data> does not already exist in a live post on the
current board by calculating its hex and checking it against the database
"""
board = Settings._.BOARD
file_hex = getMD5(data)
post = FetchOne("SELECT `id`, `parentid` FROM `posts` WHERE `file_hex` = '%s' AND `boardid` = %s AND IS_DELETED = 0 LIMIT 1" % (
file_hex, board['id']))
if post:
if int(post["parentid"]) != 0:
return True, post["parentid"], post["id"]
else:
return True, post["id"], post["id"]
else:
return False, 0, 0
def getJpegSegments(data):
if data[0:2] != b"\xff\xd8":
raise UserError("Given data isn't JPEG.")
head = 2
segments = [b"\xff\xd8"]
while 1:
if data[head: head + 2] == b"\xff\xda":
yield data[head:]
break
else:
length = struct.unpack(">H", data[head + 2: head + 4])[0]
endPoint = head + length + 2
seg = data[head: endPoint]
yield seg
head = endPoint
if (head >= len(data)):
raise UserDataError("Wrong JPEG data.")
def removeExifData(src_data):
exif = None
for seg in getJpegSegments(src_data):
if seg[0:2] == b"\xff\xe1" and seg[4:10] == b"Exif\x00\x00":
exif = seg
break
if exif:
return src_data.replace(exif, b"")
else:
return src_data
