def safe_delete(path):
if isinstance(IMAGE_CACHE_STORAGE, FileSystemStorage):
full_path = os.path.join(IMAGE_CACHE_STORAGE.location, path)
if os.path.isdir(full_path):
os.rmdir(full_path)
return
IMAGE_CACHE_STORAGE.delete(path)
def safe_delete(path):
if isinstance(IMAGE_CACHE_STORAGE, FileSystemStorage):
full_path = os.path.join(IMAGE_CACHE_STORAGE.location, path)
if os.path.isdir(full_path):
os.rmdir(full_path)
return
IMAGE_CACHE_STORAGE.delete(path)
def remove_directory(dir_path):
try:
# Since no all storages support exists for directories, we check for OSError
contents = IMAGE_CACHE_STORAGE.listdir(dir_path)
except OSError:
pass
else:
for directory in contents[0]:
safe_delete(os.path.join(dir_path, directory))
for filename in contents[1]:
safe_delete(os.path.join(dir_path, filename))
if IMAGE_CACHE_STORAGE.exists(dir_path):
# In some storages like amazon S3 there are no directories
safe_delete(dir_path)
def remove_directory(dir_path):
try:
# Since no all storages support exists for directories, we check for OSError
contents = IMAGE_CACHE_STORAGE.listdir(dir_path)
except OSError:
pass
else:
for directory in contents[0]:
safe_delete(os.path.join(dir_path, directory))
for filename in contents[1]:
safe_delete(os.path.join(dir_path, filename))
if IMAGE_CACHE_STORAGE.exists(dir_path):
# In some storages like amazon S3 there are no directories
safe_delete(dir_path)
def render(self, context):
try:
request = context['request']
session = request.session
except KeyError:
session = None
image_field = self.image_field.resolve(context)
try:
parameters = self.parameters.resolve(context)
except template.VariableDoesNotExist:
parameters = self.parameters
if isinstance(image_field, VideoFieldFile):
parameters += "&video=true"
if isinstance(image_field, ImageFieldFile) or isinstance(
image_field, VideoFieldFile):
try:
parameters = parameters + "¢er=" + image_field.__image_center_instance__.__unicode__(
)
except AttributeError:
pass
if "autogen=true" in parameters:
# We want the image to be generated immediately
image_views.image(None, str(image_field), parameters, True)
return IMAGE_CACHE_STORAGE.url(
os.path.join(unicode(image_field),
image_tokenize(session, parameters)))
def render(self, context):
try:
request = context['request']
session = request.session
except KeyError:
session = None
image_field = self.image_field.resolve(context)
try:
parameters = self.parameters.resolve(context)
except template.VariableDoesNotExist:
parameters = self.parameters
if isinstance(image_field, VideoFieldFile):
parameters += "&video=true"
if isinstance(image_field, ImageFieldFile) or isinstance(image_field, VideoFieldFile):
try:
parameters = parameters + "¢er=" + image_field.__image_center_instance__.__unicode__()
except AttributeError:
pass
if "autogen=true" in parameters:
# We want the image to be generated immediately
image_views.image(None, str(image_field), parameters, True)
return IMAGE_CACHE_STORAGE.url(os.path.join(unicode(image_field), image_tokenize(session, parameters)))
def image_url(session, parameters, image_field, generate=False):
if generate:
from image import views as image_views
autogen = 'autogen=true' in parameters
image_views.image(session, str(image_field), parameters, autogen)
image_path = os.path.join(image_tokenize(session, parameters), six.text_type(image_field))
return IMAGE_CACHE_STORAGE.url(image_path)
def image_url(session, parameters, image_field, generate=False):
if generate:
from image import views as image_views
autogen = 'autogen=true' in parameters
image_views.image(session, str(image_field), parameters, autogen)
image_path = os.path.join(image_tokenize(session, parameters),
six.text_type(image_field))
return IMAGE_CACHE_STORAGE.url(image_path)
def image(request, path, token, autogen=False):
is_admin = False
if ("is_admin=true" in token and request
and request.user.has_perm('admin')) or autogen:
parameters = token
is_admin = True
if autogen:
token = image_create_token(parameters)
else:
parameters = request.session.get(token, token)
cached_image_file = os.path.join(path, token)
now = timezone.now()
expire_offset = timezone.timedelta(seconds=IMAGE_CACHE_HTTP_EXPIRATION)
response = HttpResponse()
response['Content-type'] = 'image/jpeg'
response['Expires'] = (now + expire_offset).strftime("%a, %d %b %Y %T GMT")
response['Last-Modified'] = now.strftime("%a, %d %b %Y %T GMT")
response['Cache-Control'] = 'max-age=3600, must-revalidate'
response.status_code = 200
# If we already have the cache we send it instead of recreating it
if IMAGE_CACHE_STORAGE.exists(cached_image_file):
if autogen:
return 'Already generated'
try:
f = IMAGE_CACHE_STORAGE.open(cached_image_file, "r")
except IOError:
raise Http404()
response.write(f.read())
f.close()
response['Last-Modified'] = IMAGE_CACHE_STORAGE.modified_time(
cached_image_file).strftime("%a, %d %b %Y %T GMT")
return response
if parameters == token and not is_admin:
return HttpResponse("Forbidden", status=403)
qs = QueryDict(parameters)
file_storage = MEDIA_STORAGE
if qs.get('static', '') == "true":
file_storage = STATIC_STORAGE
format = qs.get('format', IMAGE_DEFAULT_FORMAT)
quality = int(qs.get('quality', IMAGE_DEFAULT_QUALITY))
mask = qs.get('mask', None)
mask_source = qs.get('mask_source', None)
if mask is not None:
format = "PNG"
fill = qs.get('fill', None)
background = qs.get('background', None)
tint = qs.get('tint', None)
center = qs.get('center', ".5,.5")
mode = qs.get('mode', "crop")
overlays = qs.getlist('overlay')
overlay_sources = qs.getlist('overlay_source')
overlay_tints = qs.getlist('overlay_tint')
overlay_sizes = qs.getlist('overlay_size')
overlay_positions = qs.getlist('overlay_position')
width = int(qs.get('width', None))
height = int(qs.get('height', None))
try:
padding = float(qs.get('padding', None))
except TypeError:
padding = 0.0
if "video" in qs:
data, http_response = generate_thumb(file_storage,
smart_unicode(path),
width=width,
height=height)
response.status_code = http_response
else:
try:
try:
f = urllib.urlopen(qs['url'])
data = f.read()
f.close()
except KeyError:
f = file_storage.open(path)
data = f.read()
f.close()
except IOError:
response.status_code = 404
data = ""
if data:
try:
if mode == "scale":
output_data = scale(data,
width,
height,
path,
padding=padding,
overlays=overlays,
overlay_sources=overlay_sources,
overlay_tints=overlay_tints,
overlay_positions=overlay_positions,
overlay_sizes=overlay_sizes,
mask=mask,
mask_source=mask_source,
format=format,
quality=quality,
fill=fill,
background=background,
tint=tint)
else:
output_data = scaleAndCrop(data,
width,
height,
path,
True,
padding=padding,
overlays=overlays,
overlay_sources=overlay_sources,
overlay_tints=overlay_tints,
overlay_positions=overlay_positions,
overlay_sizes=overlay_sizes,
mask=mask,
mask_source=mask_source,
center=center,
format=format,
quality=quality,
fill=fill,
background=background,
tint=tint)
except IOError:
traceback.print_exc()
response.status_code = 500
output_data = ""
else:
output_data = data
if response.status_code == 200:
IMAGE_CACHE_STORAGE.save(cached_image_file, ContentFile(output_data))
if autogen:
return 'Generated ' + str(response.status_code)
else:
if autogen:
return 'Failed ' + cached_image_file
response.write(output_data)
return response
def image(request, path, token, autogen=False):
is_admin = False
if ("is_admin=true" in token and request and request.user.has_perm('admin')) or autogen:
parameters = token
is_admin = True
if autogen:
token = image_create_token(parameters)
else:
parameters = request.session.get(token, token)
cached_image_file = os.path.join(path, token)
now = timezone.now()
expire_offset = timezone.timedelta(seconds=IMAGE_CACHE_HTTP_EXPIRATION)
response = HttpResponse()
response['Content-type'] = 'image/jpeg'
response['Expires'] = (now + expire_offset).strftime("%a, %d %b %Y %T GMT")
response['Last-Modified'] = now.strftime("%a, %d %b %Y %T GMT")
response['Cache-Control'] = 'max-age=3600, must-revalidate'
response.status_code = 200
# If we already have the cache we send it instead of recreating it
if IMAGE_CACHE_STORAGE.exists(cached_image_file):
if autogen:
return 'Already generated'
try:
f = IMAGE_CACHE_STORAGE.open(cached_image_file, "r")
except IOError:
raise Http404()
response.write(f.read())
f.close()
response['Last-Modified'] = IMAGE_CACHE_STORAGE.modified_time(cached_image_file).strftime("%a, %d %b %Y %T GMT")
return response
if parameters == token and not is_admin:
return HttpResponse("Forbidden", status=403)
qs = QueryDict(parameters)
file_storage = MEDIA_STORAGE
if qs.get('static', '') == "true":
file_storage = STATIC_STORAGE
format = qs.get('format', IMAGE_DEFAULT_FORMAT)
quality = int(qs.get('quality', IMAGE_DEFAULT_QUALITY))
mask = qs.get('mask', None)
mask_source = qs.get('mask_source', None)
if mask is not None:
format = "PNG"
fill = qs.get('fill', None)
background = qs.get('background', None)
tint = qs.get('tint', None)
center = qs.get('center', ".5,.5")
mode = qs.get('mode', "crop")
overlays = qs.getlist('overlay')
overlay_sources = qs.getlist('overlay_source')
overlay_tints = qs.getlist('overlay_tint')
overlay_sizes = qs.getlist('overlay_size')
overlay_positions = qs.getlist('overlay_position')
width = int(qs.get('width', None))
height = int(qs.get('height', None))
try:
padding = float(qs.get('padding',None))
except TypeError:
padding = 0.0
if "video" in qs:
data, http_response = generate_thumb(file_storage, smart_unicode(path), width=width, height=height)
response.status_code = http_response
else:
try:
try:
f = urllib.urlopen(qs['url'])
data = f.read()
f.close()
except KeyError:
f = file_storage.open(path)
data = f.read()
f.close()
except IOError:
response.status_code = 404
data = ""
if data:
try:
if mode == "scale":
output_data = scale(data, width, height, path, padding=padding, overlays=overlays, overlay_sources=overlay_sources, overlay_tints=overlay_tints, overlay_positions=overlay_positions, overlay_sizes=overlay_sizes, mask=mask, mask_source=mask_source, format=format, quality=quality, fill=fill, background=background, tint=tint)
else:
output_data = scaleAndCrop(data, width, height, path, True, padding=padding, overlays=overlays, overlay_sources=overlay_sources, overlay_tints=overlay_tints, overlay_positions=overlay_positions, overlay_sizes=overlay_sizes, mask=mask, mask_source=mask_source, center=center, format=format, quality=quality, fill=fill, background=background, tint=tint)
except IOError:
traceback.print_exc()
response.status_code = 500
output_data = ""
else:
output_data = data
if response.status_code == 200:
IMAGE_CACHE_STORAGE.save(cached_image_file, ContentFile(output_data))
if autogen:
return 'Generated ' + str(response.status_code)
else:
if autogen:
return 'Failed ' + cached_image_file
response.write(output_data)
return response
def image(request, path, token, autogen=False):
original_token = token
token = original_token.split("-:-")[0]
has_admin_perm = request.user.has_perm('admin')
is_admin = False
if ("is_admin=true" in token and request and has_admin_perm) or autogen:
parameters = token
is_admin = True
if autogen:
token = image_create_token(parameters)
else:
parameters = request.session.get(token, token)
cached_image_file = os.path.join(path, token)
now = timezone.now()
expire_offset = timezone.timedelta(seconds=IMAGE_CACHE_HTTP_EXPIRATION)
response = HttpResponse()
response['Content-type'] = 'image/jpeg'
response['Expires'] = (now + expire_offset).strftime("%a, %d %b %Y %T GMT")
response['Last-Modified'] = now.strftime("%a, %d %b %Y %T GMT")
response['Cache-Control'] = 'max-age=3600, must-revalidate'
response.status_code = 200
# If we already have the cache we send it instead of recreating it
if IMAGE_CACHE_STORAGE.exists(cached_image_file):
if autogen:
return 'Already generated'
try:
f = IMAGE_CACHE_STORAGE.open(cached_image_file, "rb")
except IOError:
raise Http404()
response.write(f.read())
f.close()
try:
# Django 2.0 support
modified_time = IMAGE_CACHE_STORAGE.get_modified_time(cached_image_file)
except AttributeError:
modified_time = IMAGE_CACHE_STORAGE.modified_time(cached_image_file)
response['Last-Modified'] = modified_time.strftime("%a, %d %b %Y %T GMT")
return response
if parameters == token and not is_admin:
if has_admin_perm and 'is_admin=true' in path:
# Retrocompatibilidad.
return image(request, original_token, path, autogen=autogen)
return HttpResponse("Forbidden", status=403)
qs = QueryDict(parameters)
file_storage = MEDIA_STORAGE
if qs.get('static', '') == "true":
file_storage = STATIC_STORAGE
format = qs.get('format', IMAGE_DEFAULT_FORMAT)
quality = int(qs.get('quality', IMAGE_DEFAULT_QUALITY))
mask = qs.get('mask', None)
mask_source = qs.get('mask_source', None)
if mask is not None:
format = "PNG"
fill = qs.get('fill', None)
background = qs.get('background', None)
tint = qs.get('tint', None)
center = qs.get('center', ".5,.5")
mode = qs.get('mode', "crop")
enlarge = qs.get('enlarge', "true")
overlays = qs.getlist('overlay')
overlay_sources = qs.getlist('overlay_source')
overlay_tints = qs.getlist('overlay_tint')
overlay_sizes = qs.getlist('overlay_size')
overlay_positions = qs.getlist('overlay_position')
width = qs.get('width', None)
if width:
width = int(width)
height = qs.get('height', None)
if height:
height = int(height)
pre_rotation = qs.get('pre_rotation', None)
post_rotation = qs.get('post_rotation', None)
try:
padding = float(qs.get('padding', None))
except TypeError:
padding = 0.0
grayscale = bool(qs.get('grayscale', False))
if "video" in qs:
data, http_response = generate_thumb(file_storage, force_text(path))
response.status_code = http_response
else:
try:
try:
f = requests.get(qs['url'])
data = f.content
f.close()
except KeyError:
f = file_storage.open(path)
data = f.read()
f.close()
except IOError:
response.status_code = 404
data = ""
if data:
try:
crop = (mode != "scale")
force = (enlarge == "true")
output_data = render(data, width, height, force=force, padding=padding, overlays=overlays,
overlay_sources=overlay_sources, overlay_tints=overlay_tints,
overlay_positions=overlay_positions, overlay_sizes=overlay_sizes, mask=mask,
mask_source=mask_source, center=center, format=format, quality=quality, fill=fill,
background=background, tint=tint, pre_rotation=pre_rotation,
post_rotation=post_rotation, crop=crop, grayscale=grayscale)
except IOError:
traceback.print_exc()
response.status_code = 500
output_data = ""
else:
output_data = data
if response.status_code == 200:
IMAGE_CACHE_STORAGE.save(cached_image_file, output_data, )
if autogen:
return 'Generated ' + six.text_type(response.status_code)
else:
if autogen:
return 'Failed ' + cached_image_file
response.write(output_data)
return response
def image(request, path, token, autogen=False):
original_token = token
token = original_token.split("-:-")[0]
has_admin_perm = request.user.has_perm('admin') if request else False
is_admin = False
if ("is_admin=true" in token and request and has_admin_perm) or autogen:
parameters = token
is_admin = True
if autogen:
token = image_create_token(parameters)
else:
parameters = request.session.get(token, token)
cached_image_file = os.path.join(path, token)
now = timezone.now()
expire_offset = timezone.timedelta(seconds=IMAGE_CACHE_HTTP_EXPIRATION)
response = HttpResponse()
response['Content-type'] = 'image/jpeg'
response['Expires'] = (now + expire_offset).strftime("%a, %d %b %Y %T GMT")
response['Last-Modified'] = now.strftime("%a, %d %b %Y %T GMT")
response['Cache-Control'] = 'max-age=3600, must-revalidate'
response.status_code = 200
# If we already have the cache we send it instead of recreating it
if IMAGE_CACHE_STORAGE.exists(cached_image_file):
if autogen:
return 'Already generated'
try:
f = IMAGE_CACHE_STORAGE.open(cached_image_file, "rb")
except IOError:
raise Http404()
response.write(f.read())
f.close()
try:
# Django 2.0 support
modified_time = IMAGE_CACHE_STORAGE.get_modified_time(cached_image_file)
except AttributeError:
modified_time = IMAGE_CACHE_STORAGE.modified_time(cached_image_file)
response['Last-Modified'] = modified_time.strftime("%a, %d %b %Y %T GMT")
return response
if parameters == token and not is_admin:
if has_admin_perm and 'is_admin=true' in path:
# Retrocompatibilidad.
return image(request, original_token, path, autogen=autogen)
return HttpResponse("Forbidden", status=403)
qs = QueryDict(parameters)
file_storage = MEDIA_STORAGE
if qs.get('static', '') == "true":
file_storage = STATIC_STORAGE
format = qs.get('format', IMAGE_DEFAULT_FORMAT)
quality = int(qs.get('quality', IMAGE_DEFAULT_QUALITY))
mask = qs.get('mask', None)
mask_source = qs.get('mask_source', None)
if mask is not None:
format = "PNG"
fill = qs.get('fill', None)
background = qs.get('background', None)
tint = qs.get('tint', None)
center = qs.get('center', ".5,.5")
mode = qs.get('mode', "crop")
enlarge = qs.get('enlarge', "true")
overlays = qs.getlist('overlay')
overlay_sources = qs.getlist('overlay_source')
overlay_tints = qs.getlist('overlay_tint')
overlay_sizes = qs.getlist('overlay_size')
overlay_positions = qs.getlist('overlay_position')
width = qs.get('width', None)
if width:
width = int(width)
height = qs.get('height', None)
if height:
height = int(height)
pre_rotation = qs.get('pre_rotation', None)
post_rotation = qs.get('post_rotation', None)
try:
padding = float(qs.get('padding', None))
except TypeError:
padding = 0.0
grayscale = bool(qs.get('grayscale', False))
if "video" in qs:
data, http_response = generate_thumb(file_storage, force_text(path))
response.status_code = http_response
else:
try:
try:
f = requests.get(qs['url'])
data = f.content
f.close()
except KeyError:
f = file_storage.open(path)
data = f.read()
f.close()
except IOError:
response.status_code = 404
data = ""
if data:
try:
crop = (mode != "scale")
force = (enlarge == "true")
output_data = render(data, width, height, force=force, padding=padding, overlays=overlays,
overlay_sources=overlay_sources, overlay_tints=overlay_tints,
overlay_positions=overlay_positions, overlay_sizes=overlay_sizes, mask=mask,
mask_source=mask_source, center=center, format=format, quality=quality, fill=fill,
background=background, tint=tint, pre_rotation=pre_rotation,
post_rotation=post_rotation, crop=crop, grayscale=grayscale)
except IOError:
traceback.print_exc()
response.status_code = 500
output_data = ""
else:
output_data = data
if response.status_code == 200:
IMAGE_CACHE_STORAGE.save(cached_image_file, output_data, )
if autogen:
return 'Generated ' + six.text_type(response.status_code)
else:
if autogen:
return 'Failed ' + cached_image_file
response.write(output_data)
return response
def image_url(session, parameters, image_field):
image_path = os.path.join(image_tokenize(session, parameters),
six.text_type(image_field))
return IMAGE_CACHE_STORAGE.url(image_path)
