While this _does_ add a point of failure, it'll be a pretty bad day when
google goes down.
And this is unlikely to put a (positive) dent in their incoming
requests, so let's just roll with it until we have our own TLS server.
A malicious caller of ifconfig could have caused the ifr_name field to
lack NUL-termination. I don't think this was an actual problem, though, as
the Kernel always forces NUL-termination by overwriting ifr_name's last byte
with NUL.
However, it feels better to do it properly.
LibJS doesn't store stacks for exception objects, so this
only amends test-common.js's __expect() with an optional
`details` function that can produce a more detailed error
message, and it lets test-js.cpp read and print that
error message. I added the optional details parameter to
a few matchers, most notably toBe() where it now prints
expected and actual value.
It'd be nice to have line numbers of failures, but that
seems hard to do with the current design, and this is already
much better than the current state.
Previously, the implementation would produce one Vector<u8> which
would contain the whole decompressed data. That can be a lot and
even exhaust memory.
With these changes it is still necessary to store the whole input data
in one piece (I am working on this next,) but the output can be read
block by block. (That's not optimal either because blocks can be
arbitrarily large, but it's good for now.)
This lets disasm output contain the symbol names of call and jump
destinations:
8048111: e8 88 38 01 00 call 805b99e <__cxa_atexit>
...
8048150: 74 15 je 8048167 <_start+0x4c>
The latter (the symbol of the current function with an offset) is
arguably more distracting than useful because you usually want to look
at the instruction at the absolute offset in this case, but the former
is very nice to have.
For reasons I do not understand, this cuts the time to run
`disasm /bin/id` in half, from ~1s to ~0.5s.
Let's use the one in AK/NumberFormat.h everywhere.
It has slightly different behavior than some of the copies this
removes, but it's probably nice to have uniform human readable
size outputs across the system.
The SI prefixes "k", "M", "G" mean "10^3", "10^6", "10^9".
The IEC prefixes "Ki", "Mi", "Gi" mean "2^10", "2^20", "2^30".
Let's use the correct name, at least in code.
Only changes the name of the constants, no other behavior change.
I originally defined the bytes() method for the String class, because it
made it obvious that it's a span of bytes instead of span of characters.
This commit makes this more consistent by defining a bytes() method when
the type of the span is known to be u8.
Additionaly, the cast operator to Bytes is overloaded for ByteBuffer and
such.
This is a follow up to #2936 / d3e3b4ae56aa79d9bde12ca1f143dcf116f89a4c.
Affected programs:
- Applications: Browser (Download, View source, Inspect DOM tree, JS
console), Terminal (Settings)
- Demos: Cube, Eyes, Fire, HelloWorld, LibGfxDemo, WebView,
WidgetGallery
- DevTools: HackStudio, Inspector, Profiler
- Games: 2048, Minesweeper, Snake, Solitaire
- Userland: test-web
A few have been left out where manual positioning is done on purpose,
e.g. ClipboardManager (to be close to the menu bar) or VisualBuilder (to
preserve alignment of the multiple application windows).
Decorated Interpreter::call() with [[nodiscard]] to provoke thinking
about the returned value at each call site. This is definitely not
perfect and we should really start thinking about slimming down the
public-facing LibJS interpreter API.
Fixes#3136.
This enables a nice warning in case a function becomes dead code. Also,
in the case of test-crypto.cpp, I took the liberty to add the prefix 'g_'
to the global event loop.
Technically, this can be 'exploited' to set the pgid of an exploiting process
to a near-arbitrary new pgid. This can cause conflicts when assigning future pgids,
destroys the session-boundary, and might confuse future pgid-to-session lookups.
In practice, I can't come up with a way that this causes actual harm.
The symbol name insertion scheme is different from objdump -d's.
Compare the output on Build/Userland/id:
* disasm:
...
_start (08048305-0804836b):
08048305 push ebp
...
08048366 call 0x0000df56
0804836b o16 nop
0804836d o16 nop
0804836f nop
(deregister_tm_clones (08048370-08048370))
08048370 mov eax, 0x080643e0
...
_ZN2AK8Utf8ViewC1ERKNS_6StringE (0805d9b2-0805d9b7):
_ZN2AK8Utf8ViewC2ERKNS_6StringE (0805d9b2-0805d9b7):
0805d9b2 jmp 0x00014ff2
0805d9b7 nop
* objdump -d:
08048305 <_start>:
8048305: 55 push %ebp
...
8048366: e8 9b dc 00 00 call 8056006 <exit>
804836b: 66 90 xchg %ax,%ax
804836d: 66 90 xchg %ax,%ax
804836f: 90 nop
08048370 <deregister_tm_clones>:
8048370: b8 e0 43 06 08 mov $0x80643e0,%eax
...
0805d9b2 <_ZN2AK8Utf8ViewC1ERKNS_6StringE>:
805d9b2: e9 eb f6 ff ff jmp 805d0a2 <_ZN2AK10StringViewC1ERKNS_6StringE>
805d9b7: 90 nop
Differences:
1. disasm can show multiple symbols that cover the same instructions.
I've only seen this happen for C1/C2 (and D1/D2) ctor/dtor pairs,
but it could conceivably happen with ICF as well.
2. disasm separates instructions that do not belong to a symbol with
a newline, so that nop padding isn't shown as part of a function
when it technically isn't.
3. disasm shows symbols that are skipped (due to having size 0)
in parenthesis, separated from preceding and following instructions.
