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* buffer, layout: small refactoringbptato2024-07-291-24/+22
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* buffer, pager, config: add meta-refresh + misc fixesbptato2024-07-281-3/+51
| | | | | | | | | * buffer, pager, config: add meta-refresh value, which makes it possible to follow http-equiv=refresh META tags. * config: clean up redundant format mode parser * timeout: accept varargs for params to pass on to functions * pager: add "options" dict to JS gotoURL * twtstr: remove redundant startsWithNoCase
* buffer, dom, event: JS binding for dispatchEventbptato2024-07-221-21/+27
| | | | | | * move dispatchEvent to event, add a JS binding * only reshape if the document was actually invalidated after event dispatch/interval call/etc.
* buffer: replace dispatchEvent procs with that in dombptato2024-07-211-33/+4
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* loader: copy cached items on buffer cloningbptato2024-07-201-2/+1
| | | | | This fixes a bug where cloning buffers with images would crash the browser.
* buffer: fix nil deref on click without clickable elementbptato2024-07-191-4/+5
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* html: event cleanup, XHR progressbptato2024-07-181-89/+39
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* 32-bit compilation fixesbptato2024-07-131-3/+3
| | | | | | | | It seems registerHandle/unregister doesn't accept cint as handles. Not sure why it even works on 64-bit targets... (maybe some converter weirdness?) Seems best to explicitly cast it away.
* main, forkserver: optimize startupbptato2024-07-061-24/+24
| | | | | Merge "load config" with "fork loader", so that the loader process gets forked one packet earlier.
* css, html: fix CSS dependency invalidationbptato2024-07-031-7/+7
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* dom, pager: cache images from networkbptato2024-06-292-4/+2
| | | | | | | | | | | With many limitations: * slightly randomized expiry, so it's harder to fingerprint * only images. so e.g. CSS is still left uncached * it's per-buffer and non-persistent, so images are still redownloaded for every new page load so it's more of an image sharing between placements than true caching.
* config: add various missing optionsbptato2024-06-291-0/+2
| | | | | | | Mainly things you could already set with [[siteconf]] but not normally. Also, a `styling' option to disable author styles. Also, `images' is now documented as an "experimental" option, since it's halfway usable now.
* img, loader: add image resizing, misc fixesbptato2024-06-281-0/+1
| | | | | | | | | | | | | | | * resize images with stb_image_resize * use tee for output handle redirection (redirectToFile blocks) * cache original image files * accept lseek in sandbox * misc stbi fixes For now, I just pulled in stb_image_resize v1. v2 is an extra 150K in size, not sure if it's worth the cost. (Either way, we can always switch later if needed, since the API is almost the same.) Next step: move sixel/kitty encoders to CGI, and cache their output in memory instead of the intermediate RGBA representation.
* Update monouchabptato2024-06-221-1/+1
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* misc cleanupsbptato2024-06-221-6/+4
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* forkserver: add missing exitnowbptato2024-06-221-0/+1
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* term, pager: improve image displaybptato2024-06-211-2/+1
| | | | | | * basic repaint algorithm for sixel (instead of brute force "clear the whole screen") * do not re-send kitty images already on the screen
* img, loader: separate out png codec into cgi, misc improvementsbptato2024-06-201-41/+41
| | | | | | | | | | | | | | | * multi-processed and sandboxed PNG decoding & encoding (through local CGI) * improved request body passing (including support for output id as response body) * simplified & faster blob()/text() - now every request starts suspended, and OngoingData.buf has been replaced with loader's buffering capability * image caching: we no longer pull bitmaps from the container after every single getLines call Next steps: replace our bespoke PNG decoder with something more usable, add other decoders, and make them stream.
* buffer: copy lessbptato2024-06-141-8/+10
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* buffer: decoding fixesbptato2024-06-141-44/+44
| | | | | | * simplify processData * set document charset on creation * update chagashi
* Update Chame, Chagashibptato2024-06-131-66/+14
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* buffer: add autofocusbptato2024-06-081-38/+58
| | | | naturally, it's opt-in
* pager, buffer: improve forms, protocol configbptato2024-06-081-138/+116
| | | | | | * refactor form submission * add options to specify form handling per protocol * block cross-protocol POST requests
* Move JS wrapper into Monouchabptato2024-06-031-6/+6
| | | | Operation "modularize Chawan somewhat" part 3
* js: improve jsregex interfacebptato2024-06-031-14/+12
| | | | | | | It's easier to just use nested seqs here. (This also fixes reverse-search highlighting the last capture group instead of the whole match.)
* buffer: fix ampersand escaping in markURLbptato2024-05-281-0/+4
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* forkserver: also skip SIGTERM socket unlinkbptato2024-05-201-5/+1
| | | | rationale: see previous commit
* buffer: never unlink controlling socket in cleanupbptato2024-05-201-5/+2
| | | | | | | | The pager already unlinks it, so ideally this should change nothing. (This was causing buffer processes to core dump on OpenBSD, because I forgot that I removed unlink promise. Better keep code paths the same when possible...)
* html: improve Request, derive Client from Windowbptato2024-05-201-5/+6
| | | | | | | * make Client an instance of Window (for less special casing) * misc work on Request & fetch * improve origin comparison (opaque origins of same URLs are now considered the same)
* forkserver: simplify fcLoadConfigbptato2024-05-181-12/+4
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* config: separate tmp dir for sockets, usersbptato2024-05-161-2/+9
| | | | | | | * add $LOGNAME to the tmp directory name, so that tmpdirs of separate users don't conflict * use separate directory for sockets, so that we do not have to give buffers access to all cached pages
* css/values -> css/cssvaluesbptato2024-05-161-1/+1
| | | | for consistency
* buffer: fix multipart formsbptato2024-05-112-40/+39
| | | | | | | | | * fix enctype not getting picked up * fix form data constructor requiring open() syscall (which gets blocked by our seccomp filter) * add closing boundary to multipart end * pass fds instead of path names through WebFile/Blob and send those through bufwriter/bufreader
* dom: simplify ButtonTypebptato2024-05-081-8/+11
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* js: refactorbptato2024-05-081-1/+2
| | | | | | | * prefix to-be-separated modules with js * remove dynstreams dependency * untangle from EmptyPromise * move typeptr into tojs
* buffer: add toggleImagesbptato2024-04-271-1/+4
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* Initial image supportbptato2024-04-251-6/+16
| | | | | | | | | | | | | | | | | * png: add missing filters, various decoder fixes * term: fix kitty response interpretation, add support for kitty image detection * buffer, pager: initial image display support Emphasis on "initial"; it only "works" with kitty output and PNG input. Also, it's excruciatingly slow, and repaints images way too often. Left undocumented intentionally it for now, until it actually becomes useful. In the meantime, adventurous users can find out themselves why: [[siteconf]] url = "https://.*" images = true
* buffer: fix switch from charset decoder to UTF-8 validatorbptato2024-04-201-1/+3
| | | | | The validator is used only if the decoder is nil, so it must be cleared in switchCharset.
* sandbox: seccomp support on Linuxbptato2024-04-182-25/+53
| | | | | | | | | | | | | | | | | We use libseccomp, which is now a semi-mandatory dependency on Linux. (You can still build without it, but only if you pass a scary long flag to make.) For this to work I had to disable getTimezoneOffset, which would otherwise call localtime_r which in turn reads in some files from /usr/share/zoneinfo. To allow this we would have to give unrestricted openat(2) access to buffer processes, which is unacceptable. (Giving websites access to the local timezone is a fingerprinting vector so if this ever gets fixed then it should be an opt-in config setting.) This patch also includes misc fixes to buffer cloning, and fixes the LIBEXECDIR override in the makefile so that it is actually useful.
* Update code stylebptato2024-04-172-73/+74
| | | | | | * separate params with ; (semicolon) instead of , (colon) * reduce screaming snake case use * wrap long lines
* js: remove automatic function -> closure conversionbptato2024-04-151-8/+4
| | | | | | | | | | | | | | | It's a bad idea for several reasons: * it's inefficient; must allocate an environment for a closure in Nim, even though we already have one in JS * writing macros for automatically creating functions with variadic arguments is suprisingly difficult (see the entire `js/javascript' module) * it never really worked properly, because we never freed the associated function pointer. We hardly used it anyway, so the easiest fix is to get rid of it completely.
* dom: add onclick attribute supportbptato2024-04-141-23/+34
| | | | | + better align attribute-based event handler behavior with other browsers
* sandbox: add OpenBSD pledge/unveil supportbptato2024-04-032-5/+7
| | | | | | | | | | | | pledge is a bit more fine-grained than Capsicum's capability mode, so the buffer & http ("network") sandboxes are now split up into two parts. I applied the same hack as in FreeBSD for overriding the buffer selector kqueue, because a) I didn't want to request sysctl promise b) I'm not sure if it would even work and c) if it breaks on OpenBSD, then it's broken on FreeBSD too, so there's a greater chance of discovering the bug.
* buffer: fix markURL in plaintextbptato2024-03-291-3/+31
| | | | | | | We must HTML escape data, or the fragment parser will parse plain text as markup. (However, just running htmlEscape() on data is not enough; that would also mark <, ', etc. as &gt, &apos. So we only escape after the regex is executed.)
* fflush() before forksbptato2024-03-281-0/+6
| | | | | seems like a good idea, especially because CGI uses stdout as the IPC mechanism
* Add capsicum supportbptato2024-03-282-13/+40
| | | | | | | | | | | | | It's the sandboxing system of FreeBSD. Quite pleasant to work with. (Just trying to figure out the basics with this one before tackling the abomination that is seccomp.) Indeed, the only non-trivial part was getting newSelector to work with Capsicum. Long story short it doesn't, so we use an ugly pointer cast + assignment. But even that is stdlib's "fault", not Capsicum's. This also gets rid of that ugly SocketPath global.
* buffer: fix cancel()bptato2024-03-271-12/+20
| | | | | | | | | | * fix mismatch between return value & read value that would either crash or freeze the browser depending on its mood * add an assertion to detect the above footgun * fix some resource leaks * fix iteration over a table that called a function which altered the table in buffer's cancel() * if user cancels before anything is loaded, destroy the container too
* buffer: fix getTitle never returning in some casesbptato2024-03-241-0/+2
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* client, forkserver: remove useless codebptato2024-03-241-1/+0
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* js: proper distinction between Opt/Optionbptato2024-03-241-6/+6
| | | | | | | | | | | | | | | | until now, this had very strange (and inconsistent) semantics: * err() was used for exception propagation, but also as a null value * Option accepted undefined as a none value, but not null * Opt and Option were used interchangeably (and mostly randomly) Now, Result is always used for error reporting, and err(nil) means JS_EXCEPTION. (Opt is a special case of Result where we don't care about the error type, and is not used in JS.) Option on the other hand means "nullable variation of normally non-nullable type", and translates to JS_NULL. In JS we mainly use it for turning strings nullable.
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