add support for topological sorting to the commit graph The algorithm implemented here is based on a description I read on github's blog. See code comments for details. ok op@

add a utf8 todo item

plug a memory leak in 'got blame' The leak is present in got_privsep_recv_traversed_commits. There is an edge case where it receives consecutive imsgs. The first behaves as normal and we got_object_id_dup the last commit id for changed_commit_id. The following imsg(s) then still allocates the last commit id, leaking the one(s) prior allocated. Patch by Kyle Ackerman

render_notification: don't leak fd on error

don't ignore err while preparing notifications contents

fmt

remove GOT_ERR_ITER_BUSY from got_commit_graph_iter_start() Just clear any left-over iteration state and begin a fresh iteration instead of returning GOT_ERR_ITER_BUSY if the caller did not loop through the entire graph. This change currently doesn't matter much since all existing callers only do a single pass over the graph. But it frees up an error code and makes this API more flexible.

update gotd TODO list; email notifications have been implemented

hide a pointless end-of-file error on imsg pipe in libexec helpers This error popped up in op's regress builder: got-fetch-pack: error 118 "test-repo: Permission denied": poll: unexpected end of file ok op@

display process title in syslog when a gotd child process exits

split gotd/session.c into session_read.c and session_write.c This makes it easier to tweak the read/write code paths separately.

got-notify-email does not need libutil and libz; spotted by op@

get rid of gotd client_id field where it is not needed This ID was necessary back when session and repo processes supported connections from multiple clients. Nowadays, these processes run per connection and exit once a single client session has been served. The other processes already identify the client via the session/repo file descriptor which has sent an imsg.

store repo_child_iev in gotd_session rather than gotd_session_client

track session state in struct gotd_session instead of got_session_client Eventually, I would like to disconnect clients before notifications are generated. This change helps pave the way towards this goal.

got-notify-email: bufferize smtp parsing instead of read(2)ing one byte at the time, use a temporary buffer. Special care is needed for the regress where all the replies are queued up-front instead of a real SMTP server where we'd get a reply only after a command. ok and improvements stsp@

got-notify-email: split dial() out of send_email() This allows to reduce the set of pledge(2) promises needed at runtime down to only "stdio" which will also help sandboxing -portable. ok stsp

mark smtp_timeout as static

fmt

plug memleak in parsing the notify options The strings need to be released regardless of the process parsing the file.

add initial support for commit notifications to gotd(8) At present only email notifications are implemented. Code for HTTP notifications is not yet finished, hence HTTP-related documentation remains hidden for now. This adds a new 'notify' process which has an "exec" pledge. It runs helper programs which implement the notification transport layer, such as got-notify-email which speaks SMTP. This design avoids having to link all of gotd with network libraries and related crypto libraries. Notification content is generated by the 'repo_write' process. Commit log messages and diffstats are written to a file which the 'notify' process will pass on to its helpers on stdin. The default output looks similar to 'got log -d'. If too many new commits are present the output looks similar to 'got log -s' instead. Tags always look like 'got tag -l'. The session process coordinates generation of notifications. It maintains a notification queue which holds one notification per updated reference, and passes notification requests from this queue to the 'repo_write' process for notification content creation and then to the 'notify' process for notification delivery. Only one notification can be in flight at a time to avoid file descriptor starvation if many references get updated in a single client session. ok op@

make output of 'got ref -l' more consistent Ensure that got ref -l provides consistent output regardless of whether references are packed or not. Problem reported by naddy@ Also make 'got ref -l name' work consistently when the provided argument is the name of a reference, rather than a ref-prefix. ok naddy

introduce got_poll_read_full_timeout() Upcoming gotd code needs to avoid infinite network socket read timeouts.

add support for reading blobs to object_open_io.c

introduce got_opentemp_truncatefd()