gotwebd: use from/via in gotweb_render_commits too like the previous, show also the committer if different from the author.

gotwebd: make commit page more like `got log' / tog - drop the "diff commit1 commit2" header; it's already showed in the body of the diff. - hide the tree id (not that useful to show.) - show the committer if different from the author. - use From/Via for Committer/Author. discussed with jamsek, stsp, tracey ok jamsek tracey

remove support for showing client capabilities in 'gotctl info' The gotd parent process has lost access to client capabilities. Take the easy way out and remove related code. If needed, client capabilities can still be found in the debug log with 'gotd -v'. ok op, jamsek

tog: fix {first,last}_displayed_line dead store Both are already assigned just above in open_diff_view() ok op@

typo: pass rejectfile--not outfile--to got_ferror() ok stsp@

catch a few missed got_pathlist_append() error checks ok stsp@

typo: zap double semi-colon

do not forget to initialize delta_cache_fd in the session process

remove now unused fields from struct gotd_client

gotwebd: templateify gotweb_render_diff ok tracey@; rebased after recent changes.

got: zap dead variable in add_branch() ok stsp@ op@

add a gotd session process, split off from the parent process The new session process is able to manipulate files in the repository and keeps track of the read/write client session state. The parent process now restricts its view of the filesystem to the absolute path stored in argv[0], and combines this with unveil "x" on this path. As a result the parent process can only re-exec itself. small tweaks + ok op@

regress: strip trailing / from GOT_TEST_ROOT otherwise most test fails because of double "/" ending in paths and tricking some check into thinking that's failed. ok jamsek stsp

regress: use `local' for some variables

add regress for 'got diff -d' and minor output fix Ensure an actual file path is displayed in the 'got diff -d -c commit path ...' case when one of the specified paths is a deleted file. Prior to this, the unhelpful "/dev/null" label was shown instead. Includes some copypasta fixes noted by op. ok stsp@ op@

got: minor refactor of got_pathlist_free() API Accept flag parameter to optionally specify which pointers to free. This saves callers looping through the list to free pointers. ok + fix stsp@

fix uninitialised fildes variables in libexec helpers Reviewed and uncovered as part of the diff in the forthcoming commit (pathlist API refactor). ok stsp@

got: expand diffstat -d option to 'got diff' Like got log -d, add the switch to 'got diff' to display a diffstat of changes; as per stsp's suggestion, we always include diff output with the diffstat. Disabled in gotwebd (for now :) Includes tweaks from op@ ok stsp@

tweak a gotd regress test to cover incremental 'got fetch' Previously the gotd tests were only running fresh clones.

fix tempfile handling in gotd's got_object_raw_open() There was a bug where we reused a file stored in *outfd from a previous call, resulting in a raw object backed by a file but with tempfile_idx -1. This then caused bad confusion during deltification. Fix this by passing tempfd to read_raw() functions and only setting *outfd in case it is actually required, and returning tempfd to the repository tempfile pool otherwise. ok tracey

gotwebd: templateify gotweb_render_tag ok tracey@

gotwebd: templateify gotweb_render_tags ok tracey@

use a caller-specified size limit for mapped files in got_object_raw_alloc() Without this we end up being confused about whether a raw object has been mapped into memory, leading to crashes. ok op@

adjust a misleading error message in got_object_raw_alloc() ok op@

fix *size not being passed out of read_packed_object_raw() ok op@