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Basic readelf(1) implementation, with output close enough to the binutils
version to be usable with scripts that expect the binutils version. This
started as an implementation of nm(1) until I realized that I almost always
want readelf instead, and that you actually have to do much of the work
needed for readelf just to implement nm. Arguably nm (being part of POSIX)
belongs in toybox while readelf doesn't. An argument could also be made that
neither really belongs in toybox, belonging in a separate set of development
tools (such as binutils or the LLVM binutils).
Doesn't support most of the architecture-specific stuff, most notably
relocations, but is aware of things like ARM exidx sections and the common
register state notes in core dumps for the "big four" architectures: arm,
arm64, x86, and x86-64.
Doesn't support symbol versions (but probably should).
Doesn't support section groups or the -t "section details" (which is a long
form of -S "section headers" that I've never seen used in practice and which
isn't part of -a). Doesn't support dumping unwind info or the hash table
bucket histograms.
Reuses the table of ELF architectures from file(1).
Not fuzzed, but successfully parses all the ELF files in my Ubuntu 18.04
system's lib directories. Attempts to exit with an error when presented with
an invalid ELF file rather than struggle on as binutils seems to.
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set $HOME $PWD and $OLDPWD, fix prompt \w, shuffle some functions around
to avoid prototypes, implement tilde expansion, add FORCE_COPY.
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a full block.
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output #definable.
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Move longopts after their corresponding shortopts instead of before
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Includes new tests.
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add: linelist unload
fix: proper utf8 handling on insert mode backspace
fix: free allocated data at exit
cleanup: rename some variables to be describive but short
cleanup: reorganize some variables in main
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Added: parsing of redirectation responses, will now follow redirectation
path until maximum of 10 jumps. This will probably lead to server
advertising user the https url.
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fix: force redraw after :set (no)list
fix: force redraw after insert
fix: split on zero cursor position
fix: yank and push with utf-8 content
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Scroll visual buffer up and down using standard escapes when content
has not changed, instead of redrawing every keypress.
Sidescroll now moves all the lines instead of only cursor one.
Side scrolling long lines unfortunately causes redraw to whole screen.
-Jarno
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Branch wget to xexec ftpget given an ftp url. Rename the output flag -O
like in other wgets. Add mock wget --no-check-certificate to satisfy
pkgsrc. Ifdef the version output in wget because the nonexistent
constant fails single builds and mkroot.
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Added: yank and push
Rewrote: delete operations
Minor cleanups:
Rewrote delete operations to use one delete function instead of having
separate behavior here and there.
Now delete and yank both always move cursor and then clip the whole
cursor area into yank register. For example x is just ld or jd depeding
are we right edge or not, and dd is jd with some special flags etc.
Now only default yank register is implemented, but implemeting
yank register list should be trivial since cmd execution already passes
register char.
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Replaced: draw_str_until with lib/crunch_str() where possible
Removed: Unused char draw functions.
Implemented: crunch_nstr() which is crunch_str with additional check
for byte length, this can be used to draw substrings or non null
terminated strings. (This can be moved to lib/ if its useful for others)
Reimplemented: Buffer drawing without line wrapping. Now too long lines are
drawn with @ in end. And cursor line scrolls left and right when hitting
right margin point. This will simplify buffer handling alot.
Linewrapping can be reimplemented later if needed but will add
complexity
Implemented: set list and set nolist ex commands, set list will show
escape codes such as tabs
Fix: Bug on splitting 2 lines, split was 1 byte off.
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Add: tabs, follows tabstop variable currently hardcoded to 8. Should be adjustable with :set tabstop N according to man page
fix: search, issue with searching substring that is more left than
cursor position on following lines.
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DNS responses were limited to 512 bytes back when they were UDP only,
but if you have a TCP connection you can get up to 64KiB.
Also use the existing constant for the size of rrname.
Also update the help text.
Also consistently use `sizeof(T)` rather than `sizeof T`.
Also use consistently use `ARRAY_LEN`.
Fixes #56.
Test: `toybox host value.testing.express`
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I really needed to be able to edit a file on the device, and this was
the nearest thing handy, and it turns out to be more or less usable for
basic editing, so...
Support cursor keys.
Support :q (since there's currently no record of whether the file's
modified or not, :q is the same as :q!).
Add 'A' to insert at end of line.
Add 'n' to find next after '/'.
Fix backspace all the way to get out of ex command mode.
Fix escape sequences to not hard-code assumptions about the terminal's
default background and foreground colors.
Fix 'spesial' typo for 'special', and remove explicit array sizes.
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as unusual timestamp formats
After further research and testing, I've produced a patch which handles
all filenames with special characters by copying the GNU quoting
behavior, and also treats anything following a tab as a timestamp. This
increases both ability to handle possible filenames and ability to
apply patches found in the field.
In diff, quote and escape filenames according to the following rules.
* Surround the filename with quotes if it contains a byte less than 0x20,
a byte greater than or equal to 0x80, space, backslash, or quote.
* Replace alert, backspace, form feed, newline, carriage return, tab, vertical
tab, backslash, and quote with \a, \b, \f, \n, \r, \t, \v, \\, and \",
respectively.
* Replace other bytes less than 0x20 or greater than or equal to 0x80 with a
backslash followed by the three octal digits representing the value of the
byte.
* Treat valid UTF-8 characters involving sequences of bytes greater than or
equal to 0x80 the same as other sequences of such bytes.
In patch, process quoted and escaped filenames according to the following
rules.
* If the filename does not begin with a quote, do not modify the filename.
* Remove quotes surrounding the filename.
* In quoted filenames, replace \a, \b, \f, \n, \r, \t, \v, \\, and \" with
alert, backspace, form feed, newline, carriage return, tab, vertical tab,
backslash, and quote, respectively.
* In quoted filenames, replace a backslash followed by octal digits with the
byte with that value in octal.
Also, in patch, treat anything on a +++ or --- line following a tab character
after the beginning of the filename as a timestamp, rather than part of the
filename.
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if true; then if false; then echo one; elif echo two; then echo three; else echo four; fi; fi
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The "info" pages are something very different from the "intro" pages :-)
do_lines already closes the fd.
Also improve the error message for `man`.
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You can now run:
echo hello;
if true; then echo hello; fi;
while true; do echo hello; done
It's got the start of for loops but needs environment variable resolver
to do much with them.
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Subtract the amount we actually read, not what we asked for.
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Since this masks, it doesn't actually have the same bug as
e5942a8c90c2f52550496fdf08efddb564d8e5a3, but we may as well fix the
other example of that questionable idiom while we're thinking about it...
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marshalling for vforked subshells, fix rc returned from run_pipeline for
variable assignment. (Well, sort of: X=$(false) still needs rc = 1.)
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All regcomp callers are now going through xregcomp.
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This fixes the extended attribute settings for the ip route change
command; extended attributes are collected in a separate buffer
and added to the RTM message in a specific RTA_METRICS attribute.
Only added setter support for the RTAX_MTU (per-route MTU), as that
was the only option currently parsed.
Also added support for displaying extended attributes, even those
not currently settable.
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Used by some ART tests and also some LLVM tests. (The motivating example
is the latter, but I noticed the former when looking for other users.)
Bug: http://b/137298656
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Before this patch, we're effectively doing `pidof -x` all the time. This
patch changes names_to_pid() to allow us to say whether or not we want to
include scripts, and adjusts the callers appropriately.
Also add tests for `pidof` versus `pidof -x` which pass after this
patch, without regressing the existing killall tests.
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Rename the existing xbind/xconnect to xbindany/xconnectany, to make room
for new xbind/xconnect that are more like 'x' versions of the regular
bind and connect. Move explicit bind/connect callers over to
xbind/xconnect.
Of the affected commands, only netcat is actually used by Android. It
was the most recent patch to netcat that made the lack of a more
traditional xbind/xconnect apparent.
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Investigating why the toybox tar tests fail on Android with toybox dd, I
realized I was rewriting a part of dd I'd rewritten before!
This is a re-send of my 2019-02-22 patch, rebased against the current
ToT...
This patch was originally motivated because after suggesting to the author of
https://stackoverflow.com/questions/17157820/access-vdsolinux/54797221#54797221
that he could tell dd to work in bytes rather than blocks, I realized
that our dd doesn't actually support that. But the rewrite of the main
loop is necessary to fix the incorrect output from the dd calls in the
tar test.
Without this patch, `yes | dd bs=65536 count=1 > fweep` basically gives
random output, based on how many bytes the pipe feels like giving you in
your first read. (As far as I know, dd *without* bs= was fine, but I
can't guarantee that that's true, just that I haven't seen it fail.)
Also switch to TAGGED_ARRAY and comma_* for conv rather than add two more
copies of an undesired idiom. It turned out -- contrary to the belief of
cp(1) -- that comma_scan isn't suitable for this because of its magic
handling of "no" prefixes. (It's actually harmless in cp because none
of the --preserve options begin with "no", but some dd options do.) To
this end, comma_remove is a less-magic comma_scan.
I've also changed an `if` to a `while` because other implementations
allow things like `--preserve=mode,mode` or `conv=sync,sync`. (If we
decide this is a bug rather than a feature, we should at least fix the
error message to be clear that we're rejecting the *duplication*, not
the option itself.)
I've also fixed the ^C behavior by simply adding a direct SIGINT handler
rather than trying to be clever inside the read loop (which is why we
weren't handling the SIGINT until the read returned).
I've also removed `strstarteq` and just added the '=' to each literal
when calling regular `strstart`.
Plus basic tests.
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