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|
-- gitano.admincommand
--
-- Gitano admin-commands
--
-- Copyright 2012 Daniel Silverstone <dsilvers@digital-scurf.org>
local log = require 'gitano.log'
local util = require 'gitano.util'
local repository = require 'gitano.repository'
local config = require 'gitano.config'
local clod = require 'clod'
local luxio = require 'luxio'
local function cmdmod()
return require 'gitano.command'
end
local builtin_as_short = "Become someone else"
local builtin_as_helptext = [[
usage: as <user> <cmdline>...
Runs the given command line as the given user. The only limitation
is that you are not permitted to run 'as' as someone else.
]]
local function builtin_as_validate(config, _, cmdline)
-- as
if #cmdline < 3 then
log.error("usage: as <user> <cmdline>...")
return false
end
if cmdline[3] == "as" then
log.error("Cannot use 'as' to run 'as'")
return false
end
-- Strip the cmdline
local cmdline_copy = util.deep_copy(cmdline)
table.remove(cmdline_copy,1)
table.remove(cmdline_copy,1)
cmdline.copy = cmdline_copy
-- Attempt to locate the command
local cmd = cmdmod().get(cmdline[3])
if not cmd then
log.error("Unknown command <" .. cmdline[3] .. ">")
return false
end
cmdline.cmd = cmd
-- If the returned command needs a repo, find it (and save it for later)
local repo
if cmd.takes_repo and #cmdline > 3 then
-- Acquire the repository object for the target repo
local msg
repo, msg = repository.find(config, cmdline[4])
if not repo then
log.critical("Unable to locate repository.")
log.critical(" * " .. (tostring(msg)))
log.fatal("Cannot continue")
end
if repo.is_nascent then
log.info("Repository " .. repo.name .. " is nascent")
end
cmdline.repo = repo
end
-- Finally, validate us
return cmd.validate(config, cmdline.repo, cmdline.copy)
end
local function builtin_as_prep(conf, _, cmdline, context)
-- The context contains the user we are right now.
-- We need to acquire information about that, so ask the config
local as = { user = context.user }
config.populate_context(conf, as)
for k, v in pairs(as) do
context["as_" .. k] = v
end
context.user = cmdline[2]
-- Okay, we're now ready to chain through to the called command
local res, msg = cmdline.cmd.prep(conf, cmdline.repo, cmdline.copy, context)
if res == "allow" then
-- Check to see if the user exists
if conf.users[cmdline[2]] == nil then
res, msg = "deny", "User '" .. cmdline[2] .. "' does not exist."
end
end
return res, msg
end
local function builtin_as_run(conf, _, cmdline, env)
-- Override some of the environment
env.GITANO_USER = cmdline[2]
env.GITANO_KEYTAG = "<*>"
env.GITANO_PROJECT = (cmdline.repo or {}).name
-- And then simply chain through
return cmdline.cmd.run(conf, cmdline.repo, cmdline.copy, env)
end
local builtin_user_short = "Manage users in Gitano"
local builtin_user_helptext = [[
usage: user [list]
user add <username> <email> <real name>
user del <username> [confirm token]
user email <username> <email>
user name <username> <real name>
user rename <username> <newusername> [confirm token]
With no subcommand, or the subcommand 'list' the user command will
show a list of all the users, along with their email addresses and
real names.
With the 'add' subcommand, you can add a new user to the system.
With the 'del' subcommand, you can delete a user from the system.
With the 'email' subcommand, you can change a user's email address.
With the 'name' subcommand, you can change a user's real name.
If you try and delete or rename a user, you will need to paste a
confirmation token which will be supplied if you try and delete or
rename the user without it. That token is reliant on the state of
the admin repository. Any admin operations performed between the
two delete or rename attempts will invalidate the token and you will
have to retry.
]]
local function builtin_user_validate(conf, _, cmdline)
if #cmdline == 1 then
cmdline[2] = "list"
end
if cmdline[2] ~= "list" and
cmdline[2] ~= "add" and
cmdline[2] ~= "del" and
cmdline[2] ~= "rename" and
cmdline[2] ~= "email" and
cmdline[2] ~= "name" then
log.error("user takes one of list, add, del, rename, email or name")
return false
end
if cmdline[2] == "list" and #cmdline ~= 2 then
log.error("user list takes no arguments")
return false
end
if #cmdline > 2 then
cmdline[3] = cmdline[3]:lower()
end
if cmdline[2] == "add" and #cmdline < 5 then
log.error("user add takes a username, email address and real name")
return false
end
if cmdline[2] == "del" and (#cmdline < 3 or #cmdline > 4) then
log.error("user del takes a username [and a confirmation token]")
return false
end
if cmdline[2] == "email" and #cmdline ~= 4 then
log.error("user email takes a username and an email address")
return false
end
if cmdline[2] == "name" and #cmdline < 4 then
log.error("user name takes a username and a real name")
return false
end
if cmdline[2] == "rename" and (#cmdline < 4 or #cmdline > 5) then
log.error("user rename takes a username, a new username [and a token]")
return false
end
return true
end
local function builtin_user_prep(conf, _, cmdline, context)
context.operation = "user" .. cmdline[2] -- userlist useradd userdel
context.targetuser = cmdline[3]
return conf.repo:run_lace(context)
end
local function builtin_user_run(conf, _, cmdline, env)
local reason = nil
if cmdline[2] == "list" then
-- Listing all the users
local users = {}
for k in pairs(conf.users) do
users[#users+1] = k
end
table.sort(users)
for _, username in ipairs(users) do
log.stdout(username .. ":" ..
conf.users[username].email_address .. ":" ..
conf.users[username].real_name)
end
elseif cmdline[2] == "add" then
if conf.users[cmdline[3]] then
log.fatal("User", cmdline[3], "already exists")
end
local new_name = util.deep_copy(cmdline)
table.remove(new_name, 1)
table.remove(new_name, 1)
table.remove(new_name, 1)
table.remove(new_name, 1)
new_name = table.concat(new_name, " ")
local new_clod = clod.parse("")
new_clod.settings.email_address = cmdline[4]
new_clod.settings.real_name = new_name
local utab = {
clod = new_clod,
meta = { prefix = "users/" },
keys = {}
}
conf.users[cmdline[3]] = utab
reason = "Create user " .. cmdline[3]
elseif cmdline[2] == "name" then
-- Find the named user
local utab = conf.users[cmdline[3]]
if not utab then
log.fatal("Could not find user:", cmdline[3])
end
local new_name = util.deep_copy(cmdline)
table.remove(new_name, 1)
table.remove(new_name, 1)
table.remove(new_name, 1)
new_name = table.concat(new_name, " ")
if utab.real_name ~= new_name then
utab.real_name = new_name
reason = "Change real name of " .. cmdline[3]
end
elseif cmdline[2] == "email" then
-- Find the named user
local utab = conf.users[cmdline[3]]
if not utab then
log.fatal("Could not find user:", cmdline[3])
end
if utab.email_address ~= cmdline[4] then
utab.email_address = cmdline[4]
reason = "Change email address of " .. cmdline[3]
end
elseif cmdline[2] == "del" then
local username = cmdline[3]
local utab = conf.users[username]
if not utab then
log.fatal("Could not find user:", username)
end
local token = conf.repo:generate_confirmation("delete " .. username)
if not cmdline[4] then
log.state("In order to delete", username, "you must supply the following token:")
log.state(token)
elseif cmdline[4] ~= token then
log.error("Tokens do not match. Did someone else do administrative actions?")
else
-- Iterate groups and remove the user from any group it is
-- a direct member of
for g, gtab in pairs(conf.groups) do
if gtab.members[username] then
table.remove(gtab.members, gtab.members[username])
gtab.members[username] = nil
gtab.changed_tables()
log.state("Removed", username, "from membership of", g)
end
end
-- Now remove the user
conf.users[username] = nil
-- And explain what
reason = "Delete user " .. username
end
elseif cmdline[2] == "rename" then
local oldusername = cmdline[3]
local newusername = cmdline[4]
local utab = conf.users[oldusername]
if not utab then
log.fatal("Could not find user:", oldusername)
end
if conf.users[newusername] then
log.fatal("New username already exists:", newusername)
end
local token = conf.repo:generate_confirmation("rename " .. oldusername ..
" to " .. newusername)
if not cmdline[5] then
log.state("In order to rename", oldusername, "you must supply the following token:")
log.state(token)
elseif cmdline[5] ~= token then
log.error("Tokens do not match. Did someone else do administrative actions?")
else
-- Iterate groups and rename the user in any group it is
-- a direct member of
for g, gtab in pairs(conf.groups) do
if gtab.members[oldusername] then
gtab.members[gtab.members[oldusername]] = newusername
gtab.members[newusername] = gtab.members[oldusername]
gtab.members[oldusername] = nil
gtab.changed_tables()
log.state("Renamed:", oldusername, "to", newusername,
"in membership of group:", g)
end
end
-- Now rename the user itself
conf.users[newusername] = utab
conf.users[oldusername] = nil
-- And explain what
reason = "Rename user " .. oldusername .. " to " .. newusername
end
end
if reason then
-- Need to try and make a config commit
local ok, commit = config.commit(conf, reason, env.GITANO_USER)
if not ok then
log.fatal(commit)
end
log.state("Committed: " .. reason)
end
return "exit", 0
end
local builtin_group_short = "Manage groups in Gitano"
local builtin_group_helptext = [[
usage: group [list]
group show <groupname>
group add <groupname> <description>
group del <groupname [confirm token]
group description <groupname> <description>
group adduser <groupname> <username>
group deluser <groupname> <username> [confirm token]
group addgroup <groupname> <groupname>
group delgroup <groupname> <groupname> [confirm token]
With no subcommand, or the subcommand 'list' the user command will
show a list of all the users, along with their descriptions
Showing a group will display membership information
Adding a user to a group adds the user to the direct membership list.
Removing a user from a group removes them from the direct membership
list only.
If you add a group to a group, you are stating that everyone in the
sub group is to be considered a member of this group also. Removing a
group undoes this effect.
To delete a group, remove a user from a group or remove a group from a
group requires a confirmation token which will be supplied to you if
missing.
]]
local function builtin_group_validate(conf, _, cmdline)
if not cmdline[2] then
cmdline[2] = "list"
end
local groupsubs = util.set {"list", "show", "add", "del",
"adduser", "deluser", "addgroup", "delgroup", "description"}
if not groupsubs[cmdline[2]] then
log.error("Unknown sub command", cmdline[2], "for group")
return false
end
if #cmdline > 2 then
cmdline[3] = cmdline[3]:lower()
end
if cmdline[2] == "list" and #cmdline ~= 2 then
log.error("List takes no arguments")
return false
end
if cmdline[2] == "show" and #cmdline ~= 3 then
log.error("Show takes a group name")
return false
end
if cmdline[2] == "add" and #cmdline < 4 then
log.error("Add takes a group name and a description")
return false
end
if cmdline[2] == "del" and (#cmdline < 3 or #cmdline > 4) then
log.error("Del takes a group name and a confirmation token")
return false
end
if cmdline[2] == "description" and #cmdline < 4 then
log.error("Description takes a group name and a description")
return false
end
if cmdline[2] == "adduser" and #cmdline ~= 4 then
log.error("Adduser takes a group name and a username")
return false
end
if cmdline[2] == "deluser" and (#cmdline < 4 or #cmdline > 5) then
log.error("Deluser takes a group name, a username and a confirmation token")
return false
end
if cmdline[2] == "addgroup" and #cmdline ~= 4 then
log.error("Addgroup takes a group name and a second group name")
return false
end
if cmdline[2] == "delgroup" and (#cmdline < 4 or #cmdline > 5) then
log.error("Delgroup takes a group name, a second group name, and a confirmation token")
return false
end
if ({adduser=true,addgroup=true,deluser=true,delgroup=true})[cmdline[2]] then
cmdline[4] = cmdline[4]:lower()
end
return true
end
local function builtin_group_prep(conf, _, cmdline, context)
context.operation = "group" .. cmdline[2]
util.add_splitable(context, "targetgroup", cmdline[3],
"-", "prefix", "suffix")
if cmdline[2]:match("user") or cmdline[2]:match("group") then
util.add_splitable(context, "member", cmdline[4],
"-", "prefix", "suffix")
end
return conf.repo:run_lace(context)
end
local function builtin_group_run(conf, _, cmdline, env)
local reason = nil
if cmdline[2] == "list" then
local groups = {}
for g in pairs(conf.groups) do
groups[#groups+1] = g
end
table.sort(groups)
for _, g in ipairs(groups) do
log.stdout(g .. ":" .. conf.groups[g].settings.description)
end
elseif cmdline[2] == "show" then
local g, gtab = cmdline[3], conf.groups[cmdline[3]]
if not gtab then
log.fatal("Unknown group", g)
end
log.stdout(g .. ":" .. gtab.settings.description)
for i, m in ipairs(gtab.members) do
log.stdout(" => " .. m)
end
for i, gg in ipairs(gtab.subgroups) do
log.stdout(" [] " .. gg)
end
elseif cmdline[2] == "add" then
local g = cmdline[3]
if conf.groups[g] then
log.fatal("Group", g, "already exists")
end
local new_desc = util.deep_copy(cmdline)
table.remove(new_desc, 1)
table.remove(new_desc, 1)
table.remove(new_desc, 1)
new_desc = table.concat(new_desc, " ")
local new_clod = clod.parse("")
new_clod.settings.description = new_desc
local gtab = {
clod = new_clod,
members = {},
subgroups = {},
meta = { prefix = "groups/" }
}
conf.groups[g] = gtab
reason = "Create group " .. g
elseif cmdline[2] == "description" then
local g, gtab = cmdline[3], conf.groups[cmdline[3]]
if not gtab then
log.fatal("Unknown group", g)
end
local new_desc = util.deep_copy(cmdline)
table.remove(new_desc, 1)
table.remove(new_desc, 1)
table.remove(new_desc, 1)
new_desc = table.concat(new_desc, " ")
if gtab.settings.description ~= new_desc then
gtab.settings.description = new_desc
reason = "Change group description of " .. g
end
elseif cmdline[2] == "del" then
local g = cmdline[3]
if not conf.groups[g] then
log.fatal("Unknown group", g)
end
local token = conf.repo:generate_confirmation()
if not cmdline[4] then
log.state("In order to delete group", g, "you must supply the following token:")
log.state(token)
elseif cmdline[4] ~= token then
log.fatal("Token does not match. Has someone else done administrative actions?")
else
conf.groups[g] = nil
reason = "Delete group " .. g
end
elseif cmdline[2] == "adduser" then
local g, gtab, u, utab =
cmdline[3], conf.groups[cmdline[3]],
cmdline[4], conf.users[cmdline[4]]
if not gtab then
log.fatal("Unknown group", g)
end
if not utab then
log.fatal("Unknown user", u)
end
if not gtab.members[u] then
gtab.members[#gtab.members+1] = u
gtab.members[u] = #gtab.members
gtab.changed_tables()
reason = "Add " .. u .. " to " .. g
else
log.state("User", u, "already a member of", g)
end
elseif cmdline[2] == "deluser" then
local g, gtab, u, utab =
cmdline[3], conf.groups[cmdline[3]],
cmdline[4], conf.users[cmdline[4]]
if not gtab then
log.fatal("Unknown group", g)
end
if not utab then
log.fatal("Unknown user", u)
end
if not gtab.members[u] then
log.fatal("User", u, "is not a member of", g)
end
local token = conf.repo:generate_confirmation()
if not cmdline[5] then
log.state("To delete user", u, "from group", g, "you will need this token:")
log.state(token)
elseif cmdline[5] ~= token then
log.fatal("Token does not match. Did someone else do administrative actions?")
else
table.remove(gtab.members, gtab.members[u])
gtab.members[u] = nil
gtab.changed_tables()
reason = "Remove " .. u .. " from " .. g
end
elseif cmdline[2] == "addgroup" then
local g, gtab, g2, g2tab =
cmdline[3], conf.groups[cmdline[3]],
cmdline[4], conf.groups[cmdline[4]]
if not gtab then
log.fatal("Unknown group", g)
end
if not g2tab then
log.fatal("Unknown group", g2)
end
if not gtab.subgroups[g2] then
gtab.subgroups[#gtab.subgroups+1] = g2
gtab.subgroups[g2] = #gtab.subgroups
gtab.changed_tables()
reason = "Add group " .. g2 .. " to " .. g
else
log.state("Group", g2, "already a subgroup of", g)
end
elseif cmdline[2] == "delgroup" then
local g, gtab, g2, g2tab =
cmdline[3], conf.groups[cmdline[3]],
cmdline[4], conf.groups[cmdline[4]]
if not gtab then
log.fatal("Unknown group", g)
end
if not g2tab then
log.fatal("Unknown group", g2)
end
if not gtab.subgroups[g2] then
log.fatal("Group", g2, "is not a subgroup of", g)
end
local token = conf.repo:generate_confirmation()
if not cmdline[5] then
log.state("To delete group", g2, "from group", g, "you will need this token:")
log.state(token)
elseif cmdline[5] ~= token then
log.fatal("Token does not match. Did someone else do administrative actions?")
else
table.remove(gtab.subgroups, gtab.subgroups[g2])
gtab.members[g2] = nil
gtab.changed_tables()
reason = "Remove group " .. g2 .. " from " .. g
end
else
log.fatal("Unknown sub command", cmdline[2])
end
if reason then
local ok, commit = config.commit(conf, reason, env.GITANO_USER)
if not ok then
log.fatal(commit)
end
log.state("Committed: " .. reason)
end
return "exit", 0
end
local builtin_graveyard_short = "Manage the graveyard"
local builtin_graveyard_helptext = [[
usage: graveyard [list]
graveyard restore <entry> <name>
graveyard purge [<entry>]
With no subcommand, or the subcommand 'list', the graveyard command will list
all the entries in the graveyard.
With the restore subcommand, a graveyard entry will be restored to the location
provided. The caller will need create permissions in the given location, as
well as the rights to read the graveyard.
With the purge subcommand, a graveyard entry will be purged entirely. Note
that once a graveyard entry is purged, it cannot be restored except if you have
made an out-of-band backup.
]]
local function builtin_graveyard_validate(conf, _, cmdline)
if #cmdline == 1 then
cmdline[2] = "list"
end
if cmdline[2] == "list" then
if #cmdline == 2 then
return true
end
log.error("usage: graveyard list")
end
if cmdline[2] == "restore" then
if #cmdline == 4 then
cmdline[3] = cmdline[3]:gsub("/", "")
return true
end
log.error("usage: graveyard restore <entry> <name>")
end
if cmdline[2] == "purge" then
if #cmdline < 4 then
if cmdline[3] then
cmdline[3] = cmdline[3]:gsub("/", "")
end
return true
end
log.error("usage: graveyard purge [<entry>]")
end
log.error("Unable to parse graveyard commandline properly")
return false
end
local function builtin_graveyard_prep(conf, _, cmdline, context)
local context_copy = util.deep_copy(context)
context.operation = "graveyard" .. cmdline[2]
if cmdline[2] == "restore" then
context.target = cmdline[4]
end
if cmdline[2] == "purge" then
context.target = cmdline[3] or "all"
end
local action, reason = conf.repo:run_lace(context)
if action == "allow" and cmdline[2] == "restore" then
context_copy.operation = "createrepo"
local repo = repository.find(conf, cmdline[4])
return repo:run_lace(context_copy)
end
return action, reason
end
local function builtin_graveyard_run(conf, _, cmdline, env)
local graveyard_base = config.repo_path() .. "/.graveyard/"
if cmdline[2] == "list" then
-- List the contents of the graveyard.
local dirp, err = luxio.opendir(graveyard_base)
if not dirp then
if err == luxio.ENOTDIR then
log.error("Graveyard is not present, or empty")
return "exit", 1
end
log.error("Error opening graveyard: " .. luxio.strerror(err))
return "exit", 1
end
local e, i
repeat
e, i = luxio.readdir(dirp)
if e == 0 then
if not i.d_name:find("^%.") then
log.state(i.d_name)
end
end
until not e
dirp = nil -- Allow GC of DIR handle
elseif cmdline[2] == "restore" then
-- Restoring a repository needs the prefix dirs to be made
local temp_repo, msg = repository.find(conf, cmdline[4])
if not temp_repo then
log.error("Unable to proceed: " .. msg)
return "exit", 1
end
local repo_path = temp_repo:fs_path()
local restore_src = graveyard_base .. cmdline[3]
-- Prepare the path towards the repo...
local ok, msg = util.mkdir_p(util.dirname(repo_path))
if not ok then
log.error("Unable to proceed: " .. msg)
return "exit", 1
end
-- Restore the repository
log.info("Trying to restore", cmdline[3], "as", cmdline[4])
log.ddebug(restore_src, "=>", repo_path)
local e, errno = luxio.rename(restore_src, repo_path)
if e ~= 0 then
log.error("Restore failed. Could not rename: " .. luxio.strerror(errno))
return "exit", 1
end
-- Re-find the repository
local repo, msg = repository.find(conf, cmdline[4])
if not repo then
log.error("Restore failed. Could not find restored repo: " .. msg)
return "exit", 1
end
elseif cmdline[2] == "purge" then
local match = cmdline[3]
local to_remove = {}
local dirp, err = luxio.opendir(graveyard_base)
if not dirp then
if err == luxio.ENOTDIR then
log.error("Graveyard is not present, or empty")
return "exit", 1
end
log.error("Error opening graveyard: " .. luxio.strerror(err))
return "exit", 1
end
local e, i
repeat
e, i = luxio.readdir(dirp)
if e == 0 then
if not i.d_name:find("^%.") then
if not match or (match == i.d_name) then
to_remove[#to_remove+1] = i.d_name
end
end
end
until not e
dirp = nil -- Allow GC of DIR handle
if #to_remove == 0 then
if match then
log.error("Unable to find", match, "to remove")
else
log.error("Nothing in the graveyard to purge")
end
return "exit", 1
end
for i = 1, #to_remove do
log.state("Purging", to_remove[i], "from graveyard...")
local ok, msg = util.rm_rf(graveyard_base .. to_remove[i])
if not ok then
log.error("Unable to remove:", msg)
end
end
end
return "exit", 0
end
local function register_commands(reg)
assert(reg("as", builtin_as_short, builtin_as_helptext,
builtin_as_validate, builtin_as_prep, builtin_as_run,
false, false, true))
assert(reg("user", builtin_user_short, builtin_user_helptext,
builtin_user_validate, builtin_user_prep,
builtin_user_run, false, false, true))
assert(reg("group", builtin_group_short, builtin_group_helptext,
builtin_group_validate, builtin_group_prep,
builtin_group_run, false, false, true))
assert(reg("graveyard", builtin_graveyard_short, builtin_graveyard_helptext,
builtin_graveyard_validate, builtin_graveyard_prep,
builtin_graveyard_run, false, false, true))
end
return {
register = register_commands
}
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