refactored mutation functions to offer a generic toolkit for mutating data #37
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… data. * Added a `TextInput` type that implements mutators useful only for text-based inputs. * Added several havoc mutation helper functions usable by custom mutators. * Added helper functions to mutate arrays/vec of numbers. * Generalized a couple of helper functions to be generic over all copy types, etc.
…ata.
Fixed some issues with the text-based mutator code along the way.
* The new example has two artificial vulnerabilities that can be triggered
using the right arguments to a JS function.
* Added some tweaks to the text-based mutations.
* In order to avoid breakpoints on longjump and similar functions, we
need to properly detach gdb. This requires a pattern of
```
__asm("int3");
sleep(1);
__asm("vmcall");
```
and also the `SNAPSHOT_GDB_MODE="detach"` definition. To allow
gdbsnapshot.py to do its thing, but then also to detach gdb before the
snapshot is triggered.
…n that can e.g., splice multiple lines of text from another corpus entry
…d more interesting values. * Previously those arrays contains `0, 1, 2, 3, 4` repeatedly, because they include `u8::MIN` and `u16::MIN`, which both is just `0`. * Now they also include the `::MAX` values for the signed integer types, which together with the unsigned `::MAX` covers the whole range of signed types too.
…tion. + some fixes and a `MockRng` type useful for tests.
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useful when writing custom input formats/mutators.
TextInputtype that does some mutations specific to.. well text input.havocmodule with several mutation functions usable by custom mutators, if you "just want to mutate a bunch of bytes".