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ref. https://todo.sr.ht/~bptato/chawan/29
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with buffer.images enabled, we already cache them, so we can skip the
additional request
also, add saveImage, bound to sI
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This couldn't get into system.nim for technical reasons, but it's still
pretty useful when iterating over non-mutable openArrays.
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Useful when an x-htmloutput handler needs styling for the HTML output to
be formatted correctly (as a sort of pseudo-ua style sheet).
ref. https://todo.sr.ht/~bptato/chawan/28
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eh
probably have to move the event loop to pager...
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one less mystery
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most of it has already been moved to monoucha, and the rest fits better
in other directories.
also, move urimethodmap to config
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* fix incorrect :- behavior
* merge non-standard '${%VARIABLE}' syntax with regular syntax; now all
internal variables are exported to the environment, so the behavior
should be equivalent.
* handle terminal symbol appropriately in all states
* deny numeric curly substitutions
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Turns out it's more useful to have env vars in the variable than to
allow incomplete path names.
Also, fix the disappearing backslash issue in docs.
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also, fix a bug in the chapath parser so that param expansion actually
works
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* add some more env vars to makefile
* remove fpermissive from GCC builds
* update Monoucha
* fix borked seccomp filter length safety check (ugh)
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+ clean up a bit
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* fix matching on unstripped whitespace: caught after upgrading to
upstream dash & chaseccomp wouldn't compile
* add defines to ensure that we computed the filter length correctly
* inline cut_label
* EPERM on sigaction, sigprocmask, gettid, and kill on tgkill (so a
crash doesn't trigger sandbox violations)
* move SIGSYS handler to C and add one for the network
The last change removes the stack trace from SIGSYS, but gives us the
syscall number which is probably more useful. (Indeed, we don't even
have a stack trace in release builds.)
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I'm starting to favor dotfiles over XDG basedirs, but there's no reason
why we couldn't have both. So now the search path is:
0. if config was set through -C, use that
1. $CHA_CONFIG_DIR is set -> $CHA_CONFIG_DIR/config.toml
2. $XDG_CONFIG_HOME is set -> $XDG_CONFIG_HOME/chawan/config.toml
3. ~/.config/chawan/config.toml exists -> use that
4. ~/.chawan/config.toml exists -> use that
Notably, this makes it so the default directory is ~/.chawan *if* you
don't have an existing config.toml file. So in that case known_hosts
will be placed in ~/.chawan/known_hosts. However, configurations with a
config in ~/.config/chawan/config.toml continue to work as expected, as
for those the known_hosts file remains inside ~/.config/chawan/.
Finally, I've added a default user CGI directory to reduce friction in
setting CGI up. (Like known_hosts, it's also relative to whatever config
dir you have.)
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* fix externFilterSource ignoring content types other than html
* refactor runProcess to use a custom fork/exec instead of system(3)
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This drops libseccomp as a dependency.
Also, move the capsicum/pledge definitions from bindings to sandbox.nim
because they are only used there.
Interestingly, after integrating chaseccomp I found that the
stbi process would mysteriously crash by a getrandom(2) syscall.
Closer investigation revealed it is only called on the initialization
of glibc's malloc; presumably it had never surfaced before because
libseccomp would always allocate before entering the sandbox.
So I've added getrandom to our filter as well.
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Simple netcat clone, useful for portable scripts. Especially because
some netcats will close the connection as soon as I close stdin... this
one only quits when either stdout or the socket refuses new data.
Also, it uses our standard TCP connection routine, meaning it respects
ALL_PROXY. (i.e. now spartan works with socks5 too)
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This finally makes it possible to use socks5 for Gemini.
Also slightly refactored the config, to make it easier to pass on the
config dir.
By the way, the known_hosts file is now stored in the config dir too.
The adapter will try to move it to there from the old location.
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This splits out sftp into a separate binary that *does* depend on
libcurl. However, ftp now uses the same socket code as gopher.
ftps is dropped, because I've never even tested it. Maybe I'll add
it back when we have working OpenSSL bindings.
This is still "doing the easy part first", now I have no clue how to
handle sftp because my initial plan ("just use the sftp binary") doesn't
work - sftp batch mode doesn't accept passwords. libssh2 remains the
sole candidate, but that's what libcurl wraps anyway.
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I'm not happy about this, but the alternatives are worse.
* DDG has degraded a lot lately:
- (I think?) it appends my location to the Bing queries, which
might be useful for searching restaurants, but only increases
noise when looking for something technical.
- Lately it also shoves LLM-generated summaries of websites in
my face - which I wouldn't even mind if the "summaries"
weren't in the typical overly verbose LLM style...
Also, not a degradation per se, but DDG can't load images without JS
(neither lite nor html), while Google can. Only relevant now that we
have images.
* Other large search providers either don't load without JS, or give
us a layout that we can't render.
* Smaller search providers (Mojeek, Marginalia) sadly don't have CJK
support. (DDG performs quite poorly here, too.)
* Metasearch engines (Searx, etc.) require self-hosting to work
consistently, which I lack resources for.
I'm sending ucbcb=1 and gbv=1, both of which are appended by Google
and apparently stand for "no cookies" and "no JS", respectively.
Also, I have added a siteconf entry to strip the click tracking.
The default ddg: omni-rule remains, so users who wish to switch back can
set in config.toml:
[page]
C-k = '() => pager.load("ddg:")'
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Previously, it just changed the URL before loading the site; now it's
an actual redirect.
Technically, the previous behavior was more flexible, because it let you
apply siteconf rules exclusively for sites where you redirected from.
Practically, this was not very useful, and probably unexpected for
anybody trying to use the feature.
This also fixes a bug where the loader filter would be set for the
original page, so you couldn't switch from https to http, etc.
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I'm thinking of making libcurl entirely optional; let's start with the
easiest part.
I've added a SOCKS5 client for ALL_PROXY support; I know curl supported
others too, but whatever.
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* allow string values for public errors
* remove unused errors
* update naming
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Sixel can only represent transparency for fully transparent (alpha
= 0) and fully opaque (alpha = 255) pixels, i.e. we would have to
do blending ourselves to do this "properly". But what do you even
blend? Background color? Images? Clearly you can't do text...
So instead of going down the blending route, we now just approximate
the 8-bit channel with Sixel's 1-bit channel and then patch it up with
dither. It does look a bit weird, but it's not *that* bad, especially
compared to the previous strategy of "blend with some color which
hopefully happens to be the background color" (it rarely was).
Note that this requires us to handle transparent images specially
in term. That is, for opaque ones, we can leave out the "clear cells
affected by image" part, but for transparent ones, we must clear the
entire image every time.
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* refactor parseHeader
* optimize response blob()
* add direct "to cache" mode for loader requests which sets stdout to a
file, and use it for image processing
* move image resizing into a separate process
* mmap cache files in between processing steps when possible
At last, resize is no longer a part of image decoding. Also, it feels
much nicer to keep encoded image data in the same cache as everything
else.
The mmap operations *should* be more efficient than copying the whole
RGBA data through a pipe. In practice, it only makes a difference for
loading (well, now just mmapping) the encoded image into the pager,
where it singlehandedly speeds up image display by 10x on my test image.
For the other steps, the unfortunate fact that "tocache" must delay the
next fork/exec in the pipeline until the entire image is processed seems
to equal out any wins we might have gotten from skipping a single raw
RGBA copy.
I have tried moving the delay before the exec (it's possible with yet
another pipe), but it didn't help much and made the code much
uglier. (Not that tocache didn't, but I can live with this...)
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* align status truncating behavior with w3m (not exactly, clipping
is still different, but this should be fine for now)
* add "su" for "show last alert"
- w3m's solution here is to scroll one char at a time with
"u", but that's extremely annoying to use. We already have a
line editor that can navigate lines, so reuse that instead.
* fix peekCursor showing empty text
* update todo
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I've moved most image logic to adapter, so it doesn't really make
sense to have this subdir anymore.
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just use an octree. works fine afaict, though obviously somewhat slower
than the static method (encoding is 2-pass now) & still has banding
issues with many colors (will need dithering)
also, fixed a bug that caused initial masks of bands to get misplaced
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Somewhat rough, but better than nothing.
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