/
mojosetup_mainline.lua
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-- MojoSetup; a portable, flexible installation application.
--
-- Please see the file LICENSE.txt in the source's root directory.
--
-- This file written by Ryan C. Gordon.
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-- This is where most of the magic happens. Everything is initialized, and
-- the user's config script has successfully run. This Lua chunk drives the
-- main application code.
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-- !!! FIXME: add a --dryrun option.
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local _ = MojoSetup.translate
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local function do_delete(fname)
local retval = false
if fname == nil then
retval = true
else
if MojoSetup.platform.exists(fname) then
if MojoSetup.platform.unlink(fname) then
MojoSetup.loginfo("Deleted '" .. fname .. "'")
retval = true
end
end
end
return retval
end
local function delete_files(filelist, callback, error_is_fatal)
if filelist ~= nil then
local max = #filelist
for i = max,1,-1 do
local fname = filelist[i]
if not do_delete(fname) and error_is_fatal then
MojoSetup.fatal(_("Deletion failed!"))
end
if callback ~= nil then
callback(i, max)
end
end
end
end
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local function delete_rollbacks()
if MojoSetup.rollbacks == nil then
return
end
local fnames = {}
local max = #MojoSetup.rollbacks
for id = 1,max,1 do
fnames[id] = MojoSetup.rollbackdir .. "/" .. id
end
MojoSetup.rollbacks = {} -- just in case this gets called again...
delete_files(fnames)
end
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local function delete_scratchdirs()
do_delete(MojoSetup.downloaddir)
do_delete(MojoSetup.rollbackdir)
do_delete(MojoSetup.scratchdir) -- must be last!
end
local function do_rollbacks()
if MojoSetup.rollbacks == nil then
return
end
local max = #MojoSetup.rollbacks
for id = max,1,-1 do
local src = MojoSetup.rollbackdir .. "/" .. id
local dest = MojoSetup.rollbacks[id]
if not MojoSetup.movefile(src, dest) then
-- we're already in fatal(), so we can only throw up a msgbox...
MojoSetup.msgbox(_("Serious problem"),
_("Couldn't restore some files. Your existing installation is likely damaged."))
end
MojoSetup.loginfo("Restored rollback #" .. id .. ": '" .. src .. "' -> '" .. dest .. "'")
end
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MojoSetup.rollbacks = {} -- just in case this gets called again...
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end
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-- get a linear array of filenames in the manifest.
local function flatten_manifest()
local man = MojoSetup.manifest
local files = {}
if man ~= nil then
for key,items in pairs(man) do
for i,item in ipairs(items) do
local path = item.path
if path ~= nil then
files[#files+1] = path
end
end
end
end
return files
end
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-- This gets called by fatal()...must be a global function.
function MojoSetup.revertinstall()
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if MojoSetup.gui_started then
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MojoSetup.gui.final(_("Incomplete installation. We will revert any changes we made."))
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end
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MojoSetup.loginfo("Cleaning up half-finished installation...")
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-- !!! FIXME: callbacks here.
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delete_files(MojoSetup.downloads)
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delete_files(flatten_manifest())
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do_rollbacks()
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delete_scratchdirs()
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end
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local function calc_percent(current, total)
if total == 0 then
return 0
elseif total < 0 then
return -1
end
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local retval = MojoSetup.truncatenum((current / total) * 100)
if retval > 100 then
retval = 100
elseif retval < 0 then
retval = 0
end
return retval
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end
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local function make_rate_string(rate, bw, total)
local retval = nil
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if rate <= 0 then
retval = _("stalled")
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else
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local ratetype = _("B/s")
if rate > 1024 then
rate = MojoSetup.truncatenum(rate / 1024)
ratetype = _("KB/s")
end
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if total > 0 then -- can approximate time left if we know the goal.
local bytesleft = total - bw
local secsleft = MojoSetup.truncatenum(bytesleft / rate)
local minsleft = MojoSetup.truncatenum(secsleft / 60)
local hoursleft = MojoSetup.truncatenum(minsleft / 60)
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secsleft = string.sub("00" .. (secsleft - (minsleft * 60)), -2)
minsleft = string.sub("00" .. (minsleft - (hoursleft * 60)), -2)
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if hoursleft < 10 then
hoursleft = "0" .. hoursleft
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else
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hoursleft = tostring(hoursleft)
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end
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retval = MojoSetup.format(_("%0 %1, %2:%3:%4 remaining"),
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rate, ratetype,
hoursleft, minsleft, secsleft)
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else
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retval = MojoSetup.format(_("%0 %1"), rate, ratetype)
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end
end
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return retval
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end
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local function split_path(path)
local retval = {}
for item in string.gmatch(path .. "/", "(.-)/") do
if item ~= "" then
retval[#retval+1] = item
end
end
return retval
end
local function rebuild_path(paths, n)
local retval = paths[n]
n = n + 1
while paths[n] ~= nil do
retval = retval .. "/" .. paths[n]
n = n + 1
end
return retval
end
local function normalize_path(path)
return rebuild_path(split_path(path), 1)
end
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local function close_archive_list(arclist)
for i = #arclist,1,-1 do
MojoSetup.archive.close(arclist[i])
arclist[i] = nil
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end
end
-- This code's a little nasty...
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local function drill_for_archive(archive, path, arclist)
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if not MojoSetup.archive.enumerate(archive) then
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MojoSetup.fatal(_("Couldn't enumerate archive"))
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end
local pathtab = split_path(path)
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local ent = MojoSetup.archive.enumnext(archive)
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while ent ~= nil do
if ent.type == "file" then
local i = 1
local enttab = split_path(ent.filename)
while (enttab[i] ~= nil) and (enttab[i] == pathtab[i]) do
i = i + 1
end
if enttab[i] == nil then
-- It's a file that makes up some of the specified path.
-- open it as an archive and keep drilling...
local arc = MojoSetup.archive.fromentry(archive)
if arc == nil then
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MojoSetup.fatal(_("Couldn't open archive"))
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end
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arclist[#arclist+1] = arc
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if pathtab[i] == nil then
return arc -- this is the end of the path! Done drilling!
end
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return drill_for_archive(arc, rebuild_path(pathtab, i), arclist)
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end
end
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ent = MojoSetup.archive.enumnext(archive)
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end
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MojoSetup.fatal(_("Archive not found"))
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end
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local function install_file(dest, perms, writefn, desc, manifestkey)
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-- Upvalued so we don't look these up each time...
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local fname = string.gsub(dest, "^.*/", "", 1) -- chop the dirs off...
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local ptype = _("Installing")
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local component = desc
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local keepgoing = true
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local callback = function(ticks, justwrote, bw, total)
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local percent = -1
local item = fname
if total >= 0 then
MojoSetup.written = MojoSetup.written + justwrote
percent = calc_percent(MojoSetup.written, MojoSetup.totalwrite)
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item = MojoSetup.format(_("%0: %1%%"), fname, calc_percent(bw, total))
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end
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keepgoing = MojoSetup.gui.progress(ptype, component, percent, item)
return keepgoing
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end
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-- Add to manifest first, so we can delete it during rollback if i/o fails.
local manifestentry =
{
type = "file",
path = dest,
mode = perms, -- !!! FIXME: perms may be nil...we need a MojoSetup.defaultPermsString()...
}
if manifestkey ~= nil then
if MojoSetup.manifest[manifestkey] == nil then
MojoSetup.manifest[manifestkey] = {}
end
local manifest = MojoSetup.manifest[manifestkey]
manifest[#manifest+1] = manifestentry
end
local written, sums = writefn(callback)
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if not written then
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if not keepgoing then
MojoSetup.logerror("User cancelled install during file write.")
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MojoSetup.fatal()
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else
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MojoSetup.logerror("Failed to create file '" .. dest .. "'")
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MojoSetup.fatal(_("File creation failed!"))
end
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end
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manifestentry.checksums = sums
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MojoSetup.loginfo("Created file '" .. dest .. "'")
end
local function install_file_from_archive(dest, archive, perms, desc, manifestkey)
local fn = function(callback)
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return MojoSetup.writefile(archive, dest, perms, nil, callback)
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end
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return install_file(dest, perms, fn, desc, manifestkey)
end
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local function install_file_from_string(dest, string, perms, desc, manifestkey)
local fn = function(callback)
return MojoSetup.stringtofile(string, dest, perms, callback)
end
return install_file(dest, perms, fn, desc, manifestkey)
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end
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-- !!! FIXME: we should probably pump the GUI queue here, in case there are
-- !!! FIXME: thousands of symlinks in a row or something.
local function install_symlink(dest, lndest, manifestkey)
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if not MojoSetup.platform.symlink(dest, lndest) then
MojoSetup.logerror("Failed to create symlink '" .. dest .. "'")
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MojoSetup.fatal(_("Symlink creation failed!"))
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end
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if manifestkey ~= nil then
if MojoSetup.manifest[manifestkey] == nil then
MojoSetup.manifest[manifestkey] = {}
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end
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local manifest = MojoSetup.manifest[manifestkey]
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manifest[#manifest+1] =
{
type = "symlink",
path = dest,
linkdest = lndest,
}
end
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MojoSetup.loginfo("Created symlink '" .. dest .. "' -> '" .. lndest .. "'")
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end
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-- !!! FIXME: we should probably pump the GUI queue here, in case there are
-- !!! FIXME: thousands of dirs in a row or something.
local function install_directory(dest, perms, manifestkey)
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if not MojoSetup.platform.mkdir(dest, perms) then
MojoSetup.logerror("Failed to create dir '" .. dest .. "'")
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MojoSetup.fatal(_("Directory creation failed"))
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end
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if manifestkey ~= nil then
if MojoSetup.manifest[manifestkey] == nil then
MojoSetup.manifest[manifestkey] = {}
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end
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local manifest = MojoSetup.manifest[manifestkey]
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manifest[#manifest+1] =
{
type = "dir",
path = dest,
mode = perms,
}
end
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MojoSetup.loginfo("Created directory '" .. dest .. "'")
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end
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local function install_parent_dirs(path, manifestkey)
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-- Chop any '/' chars from the end of the string...
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path = string.gsub(path, "/+$", "")
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-- Build each piece of final path. The gmatch() skips the last element.
local fullpath = ""
for item in string.gmatch(path, "(.-)/") do
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if item ~= "" then
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fullpath = fullpath .. "/" .. item
if not MojoSetup.platform.exists(fullpath) then
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install_directory(fullpath, nil, manifestkey)
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end
end
end
end
local function permit_write(dest, entinfo, file)
local allowoverwrite = true
if MojoSetup.platform.exists(dest) then
-- never "permit" existing dirs, so they don't rollback.
if entinfo.type == "dir" then
allowoverwrite = false
else
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if MojoSetup.forceoverwrite ~= nil then
allowoverwrite = MojoSetup.forceoverwrite
else
-- !!! FIXME: option/package-wide overwrite?
allowoverwrite = file.allowoverwrite
if not allowoverwrite then
MojoSetup.loginfo("File '" .. dest .. "' already exists.")
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local text = MojoSetup.format(_("File '%0' already exists! Replace?"), dest);
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local ynan = MojoSetup.promptynan(_("Conflict!"), text, true)
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if ynan == "always" then
MojoSetup.forceoverwrite = true
allowoverwrite = true
elseif ynan == "never" then
MojoSetup.forceoverwrite = false
allowoverwrite = false
elseif ynan == "yes" then
allowoverwrite = true
elseif ynan == "no" then
allowoverwrite = false
end
end
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end
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-- !!! FIXME: Setup.File.mustoverwrite to override "never"?
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if allowoverwrite then
local id = #MojoSetup.rollbacks + 1
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local f = MojoSetup.rollbackdir .. "/" .. id
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install_parent_dirs(f, nil)
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MojoSetup.rollbacks[id] = dest
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if not MojoSetup.movefile(dest, f) then
MojoSetup.fatal(_("Couldn't backup file for rollback"))
end
MojoSetup.loginfo("Moved rollback #" .. id .. ": '" .. dest .. "' -> '" .. f .. "'")
end
end
end
return allowoverwrite
end
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local function install_archive_entry(archive, ent, file, option)
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local entdest = ent.filename
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if entdest == nil then return end -- probably can't happen...
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-- Set destination in native filesystem. May be default or explicit.
local dest = file.destination
if dest == nil then
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dest = entdest
else
dest = dest .. "/" .. entdest
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end
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local perms = file.permissions -- may be nil
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if file.filter ~= nil then
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local filterperms
dest, filterperms = file.filter(dest)
if filterperms ~= nil then
perms = filterperms
end
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end
if dest ~= nil then -- Only install if file wasn't filtered out
dest = MojoSetup.destination .. "/" .. dest
if permit_write(dest, ent, file) then
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install_parent_dirs(dest, option)
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if ent.type == "file" then
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local desc = option.description
install_file_from_archive(dest, archive, perms, desc, option)
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elseif ent.type == "dir" then
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install_directory(dest, perms, option)
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elseif ent.type == "symlink" then
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install_symlink(dest, ent.linkdest, option)
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else -- !!! FIXME: device nodes, etc...
-- !!! FIXME: should this be fatal?
MojoSetup.fatal(_("Unknown file type in archive"))
end
end
end
end
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local function install_archive(archive, file, option)
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if not MojoSetup.archive.enumerate(archive) then
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MojoSetup.fatal(_("Couldn't enumerate archive"))
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end
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local isbase = (archive == MojoSetup.archive.base)
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local single_match = true
local wildcards = file.wildcards
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-- If there's only one explicit file we're looking for, we don't have to
-- iterate the whole archive...we can stop as soon as we find it.
if wildcards == nil then
single_match = false
else
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if type(wildcards) == "string" then
wildcards = { wildcards }
end
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if #wildcards > 1 then
single_match = false
else
for k,v in ipairs(wildcards) do
if string.find(v, "[*?]") ~= nil then
single_match = false
break -- no reason to keep iterating...
end
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end
end
end
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local ent = MojoSetup.archive.enumnext(archive)
while ent ~= nil do
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-- If inside GBaseArchive (no URL lead in string), then we
-- want to clip to data/ directory...
if isbase then
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local count
ent.filename, count = string.gsub(ent.filename, "^data/", "", 1)
if count == 0 then
ent.filename = nil
end
end
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-- See if we should install this file...
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if (ent.filename ~= nil) and (ent.filename ~= "") then
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local should_install = false
if wildcards == nil then
should_install = true
else
for k,v in ipairs(wildcards) do
if MojoSetup.wildcardmatch(ent.filename, v) then
should_install = true
break -- no reason to keep iterating...
end
end
end
if should_install then
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install_archive_entry(archive, ent, file, option)
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if single_match then
break -- no sense in iterating further if we're done.
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end
end
end
-- and check the next entry in the archive...
ent = MojoSetup.archive.enumnext(archive)
end
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end
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local function install_basepath(basepath, file, option)
-- Obviously, we don't want to enumerate the entire physical filesystem,
-- so we'll dig through each path element with MojoPlatform_exists()
-- until we find one that doesn't, then we'll back up and try to open
-- that as a directory, and then a file archive, and start drilling from
-- there. Fun.
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local function create_basepath_archive(path)
local archive = MojoSetup.archive.fromdir(path)
if archive == nil then
archive = MojoSetup.archive.fromfile(path)
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if archive == nil then
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MojoSetup.fatal(_("Couldn't open archive"))
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end
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end
return archive
end
-- fast path: See if the whole path exists. This is probably the normal
-- case, but it won't work for archives-in-archives.
if MojoSetup.platform.exists(basepath) then
local archive = create_basepath_archive(basepath)
install_archive(archive, file, option)
MojoSetup.archive.close(archive)
else
-- Check for archives-in-archives...
local path = ""
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local paths = split_path(basepath)
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for i,v in ipairs(paths) do
local knowngood = path
path = path .. "/" .. v
if not MojoSetup.platform.exists(path) then
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if knowngood == "" then
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MojoSetup.fatal(_("Archive not found"))
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end
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local archive = create_basepath_archive(knowngood)
local arclist = { archive }
path = rebuild_path(paths, i)
local arc = drill_for_archive(archive, path, arclist)
install_archive(arc, file, option)
close_archive_list(arclist)
return -- we're done here
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end
end
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-- wait, the whole thing exists now? Did this just move in?
install_basepath(basepath, file, option) -- try again, I guess...
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end
end
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local function set_destination(dest)
MojoSetup.loginfo("Install dest: '" .. dest .. "'")
MojoSetup.destination = dest
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MojoSetup.metadatadir = MojoSetup.destination .. "/.mojosetup"
MojoSetup.manifestdir = MojoSetup.metadatadir .. "/manifest"
MojoSetup.scratchdir = MojoSetup.metadatadir .. "/tmp"
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MojoSetup.rollbackdir = MojoSetup.scratchdir .. "/rollbacks"
MojoSetup.downloaddir = MojoSetup.scratchdir .. "/downloads"
end
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local function run_config_defined_hook(func, install)
if func ~= nil then
local errstr = func(install)
if errstr ~= nil then
MojoSetup.fatal(errstr)
end
end
end
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-- The XML manifest is compatible with the loki_setup manifest schema, since
-- it has a reasonable set of data, and allows you to use loki_update or
-- loki_patch with a MojoSetup installation. Please note that we never ever
-- look at this data! You are responsible for updating the other files if
-- you think it'll be important. The Unix MojoSetup uninstaller uses the
-- plain text manifest, for example (but loki_uninstall can use the xml one,
-- so if you want, you can just drop in MojoSetup to replace loki_setup and
-- use the Loki tools for everything else.
local function build_xml_manifest()
local install = MojoSetup.install
local updateurl = install.updateurl
if updateurl ~= nil then
updateurl = 'update_url="' .. updateurl .. '"'
else
updateurl = ''
end
local retval =
'<?xml version="1.0" encoding="UTF-8"?>\n' ..
'<product name="' .. MojoSetup.install.id .. '" desc="' ..
install.description .. '" xmlversion="1.6" root="' ..
MojoSetup.destination .. '" ' .. updateurl .. '>\n' ..
'\t<component name="Default" version="' .. install.version ..
'" default="yes">\n'
local destlen = string.len(MojoSetup.destination) + 2
for option,items in pairs(MojoSetup.manifest) do
local desc = option
if type(desc) == "table" then -- "meta" etc, or an option table.
desc = option.description
end
retval = retval .. '\t\t<option name="' .. desc .. '">\n'
for i,item in ipairs(items) do
local type = item.type
if type == "dir" then
type = "directory"
end
-- !!! FIXME: files from archives aren't filling item.mode in
-- !!! FIXME: because it figures out the perms from the archive's
-- !!! FIXME: C struct in native code. Need to get that into Lua.
-- !!! FIXME: (and get the perms uint16/string conversion cleaned up)
local mode = item.mode
if mode == nil then
mode = "0644" -- !!! FIXME
end
local path = item.path
if path ~= nil then
path = string.sub(path, destlen) -- make it relative.
end
retval = retval .. '\t\t\t<' .. type
if type == "file" then
if item.checksums ~= nil then
for k,v in pairs(item.checksums) do
retval = retval .. ' ' .. k .. '="' .. v .. '"'
end
end
retval = retval .. ' mode="' .. mode .. '"'
elseif type == "directory" then
retval = retval .. ' mode="' .. mode .. '"'
elseif type == "symlink" then
retval = retval .. ' dest="' .. item.linkdest .. '" mode="0777"'
end
retval = retval .. '>' .. path .. "</" .. type .. ">\n"
end
retval = retval .. '\t\t</option>\n'
end
retval = retval .. '\t</component>\n'
retval = retval .. '</product>\n\n'
return retval
end
local function build_lua_manifest()
local indentation = 0 -- upvalue for serialize()
local function serialize(obj)
local retval = ''
indentation = indentation + 1
local objtype = type(obj)
if objtype == "number" then
retval = tostring(obj)
elseif objtype == "string" then
retval = string.format("%q", obj)
elseif objtype == "table" then
retval = "{\n"
local tab = string.rep("\t", indentation)
for k,v in pairs(obj) do
local key = k
if type(key) == "number" then
key = '[' .. key .. ']'
elseif not string.match(key, "^[_a-zA-Z][_a-zA-Z0-9]*$") then
key = '[' .. string.format("%q", key) .. ']'
end
retval = retval .. tab .. key .. " = " .. serialize(v) .. ",\n"
end
retval = retval .. string.rep("\t", indentation-1) .. "}"
else
MojoSetup.fatal(_("BUG: Unhandled data type"))
end
indentation = indentation - 1
return retval
end
local man = {}
for option,items in pairs(MojoSetup.manifest) do
local desc = option
if type(desc) == "table" then -- "meta" etc, or an option table.
desc = option.description
end
man[desc] = items;
end
local install = MojoSetup.install
return 'package = ' .. serialize {
id = install.id,
description = install.description,
root = MojoSetup.destination,
update_url = install.updateurl,
version = install.version,
manifest = man,
} .. "\n\n"
end
local function build_txt_manifest()
local retval = ''
local destlen = string.len(MojoSetup.destination) + 2
local files = flatten_manifest()
for i,item in ipairs(files) do
local path = item
if path ~= nil then
path = string.sub(path, destlen) -- make it relative.
retval = retval .. path .. "\n"
end
end
return retval
end
local function install_manifests()
-- We write out a Lua script as a data definition language, a
-- loki_setup-compatible XML manifest, and a straight text file of
-- all the filenames. Take your pick.
local key = ".mojosetup_metadata."
-- We have to cheat and just plug these into the manifest directly, since
-- they won't show up until after we write them out, otherwise.
-- Obviously, we don't have checksums for them, either, as we haven't
-- assembled the data yet!
local perms = "0644" -- !!! FIXME
local basefname = MojoSetup.manifestdir .. "/" .. MojoSetup.install.id
local lua_fname = basefname .. ".lua"
local xml_fname = basefname .. ".xml"
local txt_fname = basefname .. ".txt"
if MojoSetup.manifest[key] == nil then
MojoSetup.manifest[key] = {}
end
local manifest = MojoSetup.manifest[key]
manifest[#manifest+1] = { type = "file", path = lua_fname, mode = perms }
manifest[#manifest+1] = { type = "file", path = xml_fname, mode = perms }
manifest[#manifest+1] = { type = "file", path = txt_fname, mode = perms }
-- These are probably all duplicated effort, but just in case...
install_parent_dirs(lua_fname, key)
install_parent_dirs(xml_fname, key)
install_parent_dirs(txt_fname, key)
-- now build these things...
local desc = _("Metadata")
install_file_from_string(lua_fname, build_lua_manifest(), perms, desc, nil)
install_file_from_string(xml_fname, build_xml_manifest(), perms, desc, nil)
install_file_from_string(txt_fname, build_txt_manifest(), perms, desc, nil)
end
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local function do_install(install)
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MojoSetup.forceoverwrite = nil
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MojoSetup.written = 0
MojoSetup.totalwrite = 0
MojoSetup.downloaded = 0
MojoSetup.totaldownload = 0
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MojoSetup.install = install
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-- !!! FIXME: try to sanity check everything we can here
-- !!! FIXME: (unsupported URLs, bogus media IDs, etc.)
-- !!! FIXME: I would like everything possible to fail here instead of
-- !!! FIXME: when a user happens to pick an option no one tested...
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if install.options ~= nil and install.optiongroups ~= nil then
MojoSetup.fatal(_("Config bug: no options"))
end
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-- This is to save us the trouble of a loop every time we have to
-- find media by id...
MojoSetup.media = {}
if install.medias ~= nil then
for k,v in pairs(install.medias) do
if MojoSetup.media[v.id] ~= nil then
MojoSetup.fatal(_("Config bug: duplicate media id"))
end
MojoSetup.media[v.id] = v
end
end
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-- Build a bunch of functions into a linear array...this lets us move
-- back and forth between stages of the install with customized functions
-- for each bit that have their own unique params embedded as upvalues.
-- So if there are three EULAs to accept, we'll call three variations of
-- the EULA function with three different tables that appear as local
-- variables, and the driver that calls this function will be able to
-- skip back and forth based on user input. This is a cool Lua thing.
local stages = {}
-- First stage: Make sure installer can run. Always fails or steps forward.
if install.precheck ~= nil then
stages[#stages+1] = function ()
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run_config_defined_hook(install.precheck, install)
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return 1
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end
end
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-- Next stage: accept all global EULAs. Rejection of any EULA is considered
-- fatal. These are global EULAs for the install, per-option EULAs come
-- later.
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if install.eulas ~= nil then
for k,eula in pairs(install.eulas) do
local desc = eula.description
local fname = "data/" .. eula.source
-- (desc) and (fname) become an upvalues in this function.
stages[#stages+1] = function (thisstage, maxstage)
local retval = MojoSetup.gui.readme(desc,fname,thisstage,maxstage)
if retval == 1 then
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if not MojoSetup.promptyn(desc, _("Accept this license?"), false) then
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MojoSetup.fatal(_("You must accept the license before you may install"))
end
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end
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return retval
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end
end
end
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-- Next stage: show any READMEs.
if install.readmes ~= nil then
for k,readme in pairs(install.readmes) do
local desc = readme.description
-- !!! FIXME: pull from archive?
local fname = "data/" .. readme.source
-- (desc) and (fname) become upvalues in this function.
stages[#stages+1] = function(thisstage, maxstage)
return MojoSetup.gui.readme(desc, fname, thisstage, maxstage)
end
end
end
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-- Next stage: let user choose install destination.
-- The config file can force a destination if it has a really good reason
-- (system drivers that have to go in a specific place, for example),
-- but really really shouldn't in 99% of the cases.
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if install.destination ~= nil then
set_destination(install.destination)
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else
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local recommend = nil
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local recommended_cfg = install.recommended_destinations
if recommended_cfg ~= nil then
if type(recommended_cfg) == "string" then
recommended_cfg = { recommended_cfg }
end
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recommend = {}
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for i,v in ipairs(recommended_cfg) do
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if MojoSetup.platform.isdir(v) then
if MojoSetup.platform.writable(v) then
recommend[#recommend+1] = v .. "/" .. install.id
end
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end
end
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if #recommend == 0 then
recommend = nil
end
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end
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-- (recommend) becomes an upvalue in this function.
stages[#stages+1] = function(thisstage, maxstage)
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local rc, dst
rc, dst = MojoSetup.gui.destination(recommend, thisstage, maxstage)
if rc == 1 then
set_destination(dst)
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end
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return rc
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end
end
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-- Next stage: let user choose install options.
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-- This may not produce a GUI stage if it decides that all options
-- are either required or disabled.
-- (install) becomes an upvalue in this function.
stages[#stages+1] = function(thisstage, maxstage)
-- This does some complex stuff with a hierarchy of tables in C.
return MojoSetup.gui.options(install, thisstage, maxstage)
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end
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-- Next stage: accept all option-specific EULAs.
-- Rejection of any EULA will put you back one stage (usually to the
-- install options), but if there is no previous stage, this becomes
-- fatal.
-- This may not produce a GUI stage if there are no selected options with
-- EULAs to accept.
stages[#stages+1] = function(thisstage, maxstage)
local option_eulas = {}
local function find_option_eulas(opts)
local options = opts['options']
if options ~= nil then
for k,v in pairs(options) do
if v.value and v.eulas then
for ek,ev in pairs(v.eulas) do
option_eulas[#option_eulas+1] = ev
end
find_option_eulas(v)
end
end
end
local optiongroups = opts['optiongroups']
if optiongroups ~= nil then
for k,v in pairs(optiongroups) do
if not v.disabled then
find_option_eulas(v)
end
end
end
end
find_option_eulas(install)
for k,eula in pairs(option_eulas) do
local desc = eula.description
local fname = "data/" .. eula.source
local retval = MojoSetup.gui.readme(desc,fname,thisstage,maxstage)
if retval == 1 then
if not MojoSetup.promptyn(desc, _("Accept this license?"), false) then
-- can't go back? We have to die here instead.
if thisstage == 1 then
MojoSetup.fatal(_("You must accept the license before you may install"))
else
retval = -1 -- just step back a stage.
end
end
end
if retval ~= 1 then
return retval
end
end
return 1 -- all licenses were agreed to. Go to the next stage.
end
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-- Next stage: Make sure source list is sane.
-- This is not a GUI stage, it just needs to run between them.
-- This gets a little hairy.
stages[#stages+1] = function(thisstage, maxstage)
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local function process_file(option, file)
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-- !!! FIXME: what happens if a file shows up in multiple options?
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local src = file.source
local prot,host,path
if src ~= nil then -- no source, it's in GBaseArchive
prot,host,path = MojoSetup.spliturl(src)
end
if (src == nil) or (prot == "base://") then -- included content?
if MojoSetup.files.included == nil then
MojoSetup.files.included = {}
end
MojoSetup.files.included[file] = option