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|
-- Git Multimail Plugin
--
-- This plugin enables support for git-multimail on the server-side which
-- allows for the nice(r) reporting of changes by email.
--
-- Copyright 2017 Daniel Silverstone <dsilvers@digital-scurf.org>
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
-- 3. Neither the name of the author nor the names of their contributors
-- may be used to endorse or promote products derived from this software
-- without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-- SUCH DAMAGE.
local gitano = require "gitano"
local luxio = require "luxio"
local sp = require "luxio.subprocess"
local git_multimail_py = nil
do
local args = {
"git", "config", "--path", "gitano.multimail.location",
stdout = sp.PIPE,
cwd = luxio.getenv("HOME"),
}
local proc = sp.spawn_simple(args)
git_multimail_py = proc.stdout:read("*l")
local how, why = proc:wait()
if how ~= "exit" then
return -- don't register, something really went wrong
end
if why ~= 0 then
git_multimail_py = nil
end
end
local GLOBAL_CONFS = {
environment = "generic",
refFilterExclusionRegex = "^refs/gitano/",
verbose = "true",
}
local function run_multimail(confbits, env, stdin)
local args = {
env = env,
stdin = sp.PIPE,
stdout = sp.PIPE,
stderr = sp.PIPE,
git_multimail_py,
}
for k, v in pairs(confbits) do
args[#args+1] = "-c"
args[#args+1] = "multimailhook." .. k .. "=" .. v
end
gitano.log.ddebug("About to spawn git_multimail.py as...")
for _, v in ipairs(args) do
gitano.log.ddebug("=> " .. v)
end
local proc = sp.spawn_simple(args)
proc.stdin:write(stdin)
proc.stdin:close()
local outcontent = proc.stdout:read("*a")
local errcontent = proc.stderr:read("*a")
local how, why = proc:wait()
local function show(what, pfx)
if what == "" then return end
if what:sub(-1) ~= "\n" then what = what .. "\n" end
for line in what:gfind("([^\n]*)\n") do
gitano.log.state(pfx .. ": " .. line)
end
end
if outcontent ~= "" or errcontent ~= "" then
gitano.log.state("Git Multimail says:")
show(outcontent, "O")
show(errcontent, "E")
end
if (how ~= "exit") or (why ~= 0) then
gitano.log.error("git_multimail.py failed: " .. tostring(how) .. " " .. tostring(why))
end
gitano.log.ddebug("Done with multimail")
end
local function git_multimail_post_receive_hook(repo, updates)
-- We don't get here at all if we don't have git_multimail.py's location
-- as such, our first job is to request authorisation from the ACL
local context = {
user = "gitano/multimail",
source = "plugin_multimail",
operation = "multimail",
}
gitano.log.ddebug("Multimail: Asking " .. repo.name .. " if multimail is allowed...")
local action, reason = repo:run_lace(context)
gitano.log.ddebug(("Multimail: action=%q reason=%q"):format(action,reason))
if action ~= "allow" then
gitano.log.info("Multimail disallowed: " .. tostring(action) .. ": " .. tostring(reason))
return "continue"
end
-- Okay, we're allowed to run, so let's build our config...
local confbits = gitano.util.deep_copy(GLOBAL_CONFS)
local conf = repo.config
local username = luxio.getenv("GITANO_USER")
local user = conf.users[username] or {
real_name = "Anonymous",
email_address = "postmaster@localhost.localdomain"
}
-- And we need to set 'from'
confbits.from = user.real_name .. " <" .. user.email_address .. ">"
local function layer_confbits(fromrepo, pfx)
gitano.log.ddebug("Multimail: Attempting to layer from " .. tostring(fromrepo.name) .. " via prefix " .. pfx)
-- Note this is currently an unstable API
local from = fromrepo.project_config
for key, value in from:each(pfx) do
key = key:sub(#pfx+2,-1)
gitano.log.ddebug(("Multimail: => setting %q to %q"):format(key,value))
confbits[key] = tostring(value)
end
end
local gitano_admin_repo = (
gitano.repository.find(repo.config, "gitano-admin.git"))
layer_confbits(gitano_admin_repo, "defaults.multimail")
layer_confbits(repo, "multimail")
layer_confbits(gitano_admin_repo, "override.multimail")
-- Now we run a supple hook (if necessary) which will be able to adjust
-- the config bits...
if repo:uses_hook("multimail") then
gitano.log.debug("Multimail: Configuring supple for hook")
gitano.actions.set_supple_globals("multimail")
gitano.log.info("Multimail: Running hook")
local info = {
username = username,
source = "plugin_multimail",
realname = user.real_name or "",
email = user.email_address or "",
}
local ok, msg = gitano.supple.run_hook("multimail", repo, info, updates, confbits)
if not ok then
gitano.log.error("Multimail: Hook failed: " .. tostring(msg))
gitano.log.error("Multimail: Aborting send")
return
end
gitano.log.info("Multimail: Finished running hook, continuing...")
end
-- Next we clean up the config bits, by copying over only what we whitelist
local unfiltered = confbits
confbits = {}
for _, key in ipairs(
{
"mailingList", "refchangeList", "announceList", "commitList",
"from",
"announceShortLog", "commitBrowseURL", "refchangeShowGraph",
"refchangeShowLog", "administrator", "emailPrefix",
"refFilterInclusionRegex", "refFilterExclusionRegex",
"refFilterDoSendRegex", "refFilterDontSendRegex",
"verbose", "stdout",
}) do
local val = unfiltered[key]
if val and val ~= "" then
gitano.log.ddebug(
("Multimail: Permitted %q => %q"):format(key, unfiltered[key]))
confbits[key] = unfiltered[key]
end
end
-- No matter what goes on in the clod configs, we need to set repoName
confbits.repoName = repo.name
local fullusername = user.real_name .. " (" .. username .. ")"
local env = {
USERNAME = fullusername,
USER = fullusername,
}
-- Prepare the stdin for git_multimail.py, in post-receive format
local stdin = {}
for ref, chg in pairs(updates) do
stdin[#stdin+1] = table.concat({chg.oldsha, chg.newsha, ref}, " ")
end
stdin = table.concat(stdin, "\n") .. "\n"
-- Finally, if there's any address set at all, run multimail
if (confbits.mailingList or
confbits.announceList or
confbits.commitList or
confbits.refchangeList) then
run_multimail(confbits, env, stdin)
else
gitano.log.info("Multimail: Did not run, no target addresses set")
end
return "continue"
end
if git_multimail_py ~= nil and luxio.getenv("GITANO_USER") ~= "gitano/bypass" then
gitano.hooks.add(gitano.hooks.names.POST_RECEIVE,
100, git_multimail_post_receive_hook)
end
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