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Code Releases Wiki Activity

Code cleanups in core and other affected files

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This commit is contained in:
Andrew Senetar
2021-08-21 18:02:02 -05:00
parent 1ef5f56158
commit d576a7043c
27 changed files with 281 additions and 293 deletions
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28
core/pe/exif.py
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@@ -193,8 +193,8 @@ class TIFF_file:
self.s2nfunc = s2n_intel if self.endian == INTEL_ENDIAN else s2n_motorola
def s2n(self, offset, length, signed=0, debug=False):
slice = self.data[offset : offset + length]
val = self.s2nfunc(slice)
data_slice = self.data[offset : offset + length]
val = self.s2nfunc(data_slice)
# Sign extension ?
if signed:
msb = 1 << (8 * length - 1)
@@ -206,7 +206,7 @@ class TIFF_file:
"Slice for offset %d length %d: %r and value: %d",
offset,
length,
slice,
data_slice,
val,
)
return val
@@ -236,10 +236,10 @@ class TIFF_file:
for i in range(entries):
entry = ifd + 2 + 12 * i
tag = self.s2n(entry, 2)
type = self.s2n(entry + 2, 2)
if not 1 <= type <= 10:
entry_type = self.s2n(entry + 2, 2)
if not 1 <= entry_type <= 10:
continue # not handled
typelen = [1, 1, 2, 4, 8, 1, 1, 2, 4, 8][type - 1]
typelen = [1, 1, 2, 4, 8, 1, 1, 2, 4, 8][entry_type - 1]
count = self.s2n(entry + 4, 4)
if count > MAX_COUNT:
logging.debug("Probably corrupt. Aborting.")
@@ -247,14 +247,14 @@ class TIFF_file:
offset = entry + 8
if count * typelen > 4:
offset = self.s2n(offset, 4)
if type == 2:
if entry_type == 2:
# Special case: nul-terminated ASCII string
values = str(self.data[offset : offset + count - 1], encoding="latin-1")
else:
values = []
signed = type == 6 or type >= 8
for j in range(count):
if type in {5, 10}:
signed = entry_type == 6 or entry_type >= 8
for _ in range(count):
if entry_type in {5, 10}:
# The type is either 5 or 10
value_j = Fraction(self.s2n(offset, 4, signed), self.s2n(offset + 4, 4, signed))
else:
@@ -263,7 +263,7 @@ class TIFF_file:
values.append(value_j)
offset = offset + typelen
# Now "values" is either a string or an array
a.append((tag, type, values))
a.append((tag, entry_type, values))
return a
@@ -298,7 +298,7 @@ def get_fields(fp):
T = TIFF_file(data)
# There may be more than one IFD per file, but we only read the first one because others are
# most likely thumbnails.
main_IFD_offset = T.first_IFD()
main_ifd_offset = T.first_IFD()
result = {}
def add_tag_to_result(tag, values):
@@ -310,8 +310,8 @@ def get_fields(fp):
return # don't overwrite data
result[stag] = values
logging.debug("IFD at offset %d", main_IFD_offset)
IFD = T.dump_IFD(main_IFD_offset)
logging.debug("IFD at offset %d", main_ifd_offset)
IFD = T.dump_IFD(main_ifd_offset)
exif_off = gps_off = 0
for tag, type, values in IFD:
if tag == 0x8769: