def save(self, fn, preview=None, dviPreview=None):
cf = not hasattr(fn, 'write')
if cf:
f = open(fn, 'wb')
else:
f = fn
try:
ps = self._postscript(dviPreview)
if preview:
import struct
A = (b'\xc5', b'\xd0', b'\xd3', b'\xc6')
hdr = struct.pack(
*(("<4c7i", ) + A +
(32, len(ps), 0, 0, 32 + len(ps), len(preview), 0xffff)))
f.write(hdr)
f.write(rawBytes(ps))
f.write(preview)
else:
f.write(rawBytes(ps))
finally:
if cf:
f.close()
if cf and os.name == 'mac':
from reportlab.lib.utils import markfilename
markfilename(fn, ext='EPSF')
def save(self,fn, preview=None, dviPreview=None):
cf = not hasattr(fn,'write')
if cf:
f = open(fn,'wb')
else:
f = fn
try:
ps = self._postscript(dviPreview)
if preview:
import struct
A = (b'\xc5',b'\xd0',b'\xd3',b'\xc6')if isPy3 else (chr(0xc5),chr(0xd0),chr(0xd3),chr(0xc6))
hdr=struct.pack(*(
("<4c7i",)
+A
+( 32,len(ps),0,0,32+len(ps),len(preview),0xffff)
)
)
f.write(hdr)
f.write(rawBytes(ps))
f.write(preview)
else:
f.write(rawBytes(ps))
finally:
if cf:
f.close()
if cf and os.name=='mac':
from reportlab.lib.utils import markfilename
markfilename(fn,ext='EPSF')
def computeU(encryptionkey,
encodestring=PadString,
revision=None,
documentId=None):
revision = checkRevision(revision)
from reportlab.lib.arciv import ArcIV
if revision == 2:
result = ArcIV(encryptionkey).encode(encodestring)
elif revision == 3:
assert documentId is not None, "Revision 3 algorithm needs the document ID!"
h = md5(PadString)
h.update(rawBytes(documentId))
tmp = h.digest()
tmp = ArcIV(encryptionkey).encode(tmp)
for n in range(1, 20):
thisKey = xorKey(n, encryptionkey)
tmp = ArcIV(thisKey).encode(tmp)
while len(tmp) < 32:
tmp += b'\0'
result = tmp
if DEBUG:
print('computeU(%s,%s,%s,%s)==>%s' % tuple([
hexText(str(x)) for x in (encryptionkey, encodestring, revision,
documentId, result)
]))
return result
def computeU(encryptionkey, encodestring=PadString,revision=2,documentId=None):
from reportlab.lib.arciv import ArcIV
if revision == 2:
result = ArcIV(encryptionkey).encode(encodestring)
elif revision == 3:
assert documentId is not None, "Revision 3 algorithm needs the document ID!"
h = md5(PadString)
h.update(rawBytes(documentId))
tmp = h.digest()
tmp = ArcIV(encryptionkey).encode(tmp)
for n in range(1,20):
thisKey = xorKey(n, encryptionkey)
tmp = ArcIV(thisKey).encode(tmp)
while len(tmp) < 32:
tmp += b'\0'
result = tmp
if DEBUG: print('computeU(%s,%s,%s,%s)==>%s' % tuple([hexText(str(x)) for x in (encryptionkey, encodestring,revision,documentId,result)]))
return result
def save(self,f=None):
if not hasattr(f,'write'):
_f = open(f,'wb')
else:
_f = f
if self.code[-1]!='showpage': self.clear()
self.code.insert(0,'''\
%%!PS-Adobe-3.0 EPSF-3.0
%%%%BoundingBox: 0 0 %d %d
%%%% Initialization:
/m {moveto} bind def
/l {lineto} bind def
/c {curveto} bind def
''' % (self.width,self.height))
self._t1_re_encode()
_f.write(rawBytes(self._sep.join(self.code)))
if _f is not f:
_f.close()
from reportlab.lib.utils import markfilename
markfilename(f,creatorcode='XPR3',filetype='EPSF')
def save(self,f=None):
if not hasattr(f,'write'):
_f = open(f,'wb')
else:
_f = f
if self.code[-1]!='showpage': self.clear()
self.code.insert(0,'''\
%%!PS-Adobe-3.0 EPSF-3.0
%%%%BoundingBox: 0 0 %d %d
%%%% Initialization:
/m {moveto} bind def
/l {lineto} bind def
/c {curveto} bind def
''' % (self.width,self.height))
self._t1_re_encode()
_f.write(rawBytes(self._sep.join(self.code)))
if _f is not f:
_f.close()
from reportlab.lib.utils import markfilename
markfilename(f,creatorcode='XPR3',filetype='EPSF')
return '<' + ''.join('%02X' % ord(c) for c in rawUnicode(text)) + '>'
def unHexText(hexText):
equalityCheck(hexText[0], '<', 'bad hex text')
equalityCheck(hexText[-1], '>', 'bad hex text')
hexText = hexText[1:-1]
out = b''
for i in range(int(len(hexText) / 2.0)):
slice = hexText[i * 2:i * 2 + 2]
char = int2Byte(eval('0x' + slice))
out = out + char
return out
PadString = rawBytes(''.join(chr(int(c, 16)) for c in padding.strip().split()))
def checkRevision(revision):
if revision is None:
strength = rl_config.encryptionStrength
if strength == 40:
revision = 2
elif strength == 128:
revision = 3
elif strength == 256:
if not pyaes:
raise ValueError(
'strength==256 is not supported as package pyaes is not importable'
)
revision = 5
def calcChecksum(data):
"""Calculates TTF-style checksums"""
data = rawBytes(data)
if len(data)&3: data = data + (4-(len(data)&3))*b"\0"
return sum(unpack(">%dl" % (len(data)>>2), data)) & 0xFFFFFFFF
def calcChecksum(data):
"""Calculates TTF-style checksums"""
data = rawBytes(data)
if len(data) & 3: data = data + (4 - (len(data) & 3)) * b"\0"
return sum(unpack(">%dl" % (len(data) >> 2), data)) & 0xFFFFFFFF
def hexText(text):
"a legitimate way to show strings in PDF"
return '<%s>' % asNative(hexlify(rawBytes(text))).upper()
def hexText(text):
"a legitimate way to show strings in PDF"
return '<' + ''.join('%02X' % ord(c) for c in rawUnicode(text)) + '>'
def unHexText(hexText):
equalityCheck(hexText[0], '<', 'bad hex text')
equalityCheck(hexText[-1], '>', 'bad hex text')
hexText = hexText[1:-1]
out = b''
for i in range(int(len(hexText)/2.0)):
slice = hexText[i*2: i*2+2]
char = int2Byte(eval('0x'+slice))
out = out + char
return out
PadString = rawBytes(''.join(chr(int(c, 16)) for c in padding.strip().split()))
def encryptionkey(password, OwnerKey, Permissions, FileId1, revision=2):
# FileId1 is first string of the fileid array
# add padding string
#AR force same as iText example
#Permissions = -1836 #int(Permissions - 2**31)
password = asBytes(password) + PadString
# truncate to 32 bytes
password = password[:32]
# translate permissions to string, low order byte first
p = Permissions# + 2**32L
permissionsString = b""
for i in range(4):
byte = (p & 0xff) # seems to match what iText does
p = p>>8
