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Define human-readable string formatting for objects in repr, rather than
str, as this will enable an interactive interpreter to more conveniently
show this data to the user. I believe this especially makes sense in
cases where __str__ doesn't perform a semantic type conversion for its
class (currently, all affected cases).
Scripts can still easily yield this information by using
`print(object)`, as print will fallback to repr(object) when there is
not an explicitly defined __str__.
Furthermore, this patch still maintains backwards compatability (for the
time being) of using str(object) to retrieve the information. This is
because the default __str__ implementation will defer to __repr__ if
provided. This made the Symtbl case of providing both of them
especially redundant.
Signed-off-by: Malfurious <m@lfurio.us>
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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__getattribute__ is the low-level magic func and will intercept every
attribute lookup, whereas __getattr__ is high-level, and is only invoked
in specific conditions (such as __getattribute__'s failure).
As such, any overload of __getattribute__ which preferentially falls
back to object.__getattribute__() before serving a request, can more
simply be replaced by a __getattr__ overload without the fallback.
Signed-off-by: Malfurious <m@lfurio.us>
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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Found a spot to use __attr_filter__ in the rev module, so moving it out
of mem and into a shared place (util).
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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rather than cacheing ELF instantiations, just cache the results of
external commands
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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expose the rest of the rev.r2 capabilities through rev.elf
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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With recursive ELF loads, there is the possibility of loading in a heavy
ELF (like libc) multiple times. Hiding instantiation of the class
behind a factory method and caching instances should eliminate this
problem.
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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Create a class which encapsulates some basic information about an ELF
file and provides a convenient interface for basic reverse engineering.
In particular, ELF automatically loads the symbol table of the given elf
file and recursively creates ELF objects for any linked libraries.
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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