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(* febootstrap 3
* Copyright (C) 2009-2010 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*)
(* Debian support. *)
open Unix
open Printf
open Febootstrap_package_handlers
open Febootstrap_utils
open Febootstrap_cmdline
(* Create a temporary directory for use by all the functions in this file. *)
let tmpdir = tmpdir ()
let debian_detect () =
file_exists "/etc/debian_version" &&
Config.aptitude <> "no" && Config.apt_cache <> "no" && Config.dpkg <> "no"
let rec debian_resolve_dependencies_and_download names =
let cmd =
sprintf "%s depends --recurse -i %s | grep -v '^[<[:space:]]'"
Config.apt_cache
(String.concat " " (List.map Filename.quote names)) in
let pkgs = run_command_get_lines cmd in
let pkgs =
if Config.apt_cache_depends_recurse_broken then
workaround_broken_apt_cache_depends_recurse (sort_uniq pkgs)
else
pkgs in
(* Exclude packages matching [--exclude] regexps on the command line. *)
let pkgs =
List.filter (
fun name ->
not (List.exists (fun re -> Str.string_match re name 0) excludes)
) pkgs in
(* Download the packages. *)
let cmd =
sprintf "umask 0000; cd %s && %s download %s"
(Filename.quote tmpdir)
Config.aptitude
(String.concat " " (List.map Filename.quote pkgs)) in
run_command cmd;
(* Find out what aptitude downloaded. *)
let files = Sys.readdir tmpdir in
let pkgs = List.map (
fun pkg ->
(* Look for 'pkg_*.deb' in the list of files. *)
let pre = pkg ^ "_" in
let r = ref "" in
try
for i = 0 to Array.length files - 1 do
if string_prefix pre files.(i) then (
r := files.(i);
files.(i) <- "";
raise Exit
)
done;
eprintf "febootstrap: aptitude: error: no file was downloaded corresponding to package %s\n" pkg;
exit 1
with
Exit -> !r
) pkgs in
List.sort compare pkgs
(* On Ubuntu 10.04 LTS, apt-cache depends --recurse is broken. It
* doesn't return the full list of dependencies. Therefore recurse
* into these dependencies one by one until we reach a fixpoint.
*)
and workaround_broken_apt_cache_depends_recurse names =
debug "workaround for broken 'apt-cache depends --recurse' command:\n %s"
(String.concat " " names);
let names' =
List.map (
fun name ->
let cmd =
sprintf "%s depends --recurse -i %s | grep -v '^[<[:space:]]'"
Config.apt_cache (Filename.quote name) in
run_command_get_lines cmd
) names in
let names' = List.flatten names' in
let names' = sort_uniq names' in
if names <> names' then
workaround_broken_apt_cache_depends_recurse names'
else
names
let debian_list_files pkg =
debug "unpacking %s ..." pkg;
(* We actually need to extract the file in order to get the
* information about modes etc.
*)
let pkgdir = tmpdir // pkg ^ ".d" in
mkdir pkgdir 0o755;
let cmd =
sprintf "umask 0000; dpkg-deb --fsys-tarfile %s | (cd %s && tar xf -)"
(tmpdir // pkg) pkgdir in
run_command cmd;
let cmd = sprintf "cd %s && find ." pkgdir in
let lines = run_command_get_lines cmd in
let files = List.map (
fun path ->
assert (path.[0] = '.');
(* No leading '.' *)
let path =
if path = "." then "/"
else String.sub path 1 (String.length path - 1) in
(* Find out what it is and get the canonical filename. *)
let statbuf = lstat (pkgdir // path) in
let is_dir = statbuf.st_kind = S_DIR in
(* No per-file metadata like in RPM, but we can synthesize it
* from the path.
*)
let config = statbuf.st_kind = S_REG && string_prefix "/etc/" path in
let mode = statbuf.st_perm in
(path, { ft_dir = is_dir; ft_config = config; ft_mode = mode;
ft_ghost = false; ft_size = statbuf.st_size })
) lines in
files
(* Easy because we already unpacked the archive above. *)
let debian_get_file_from_package pkg file =
tmpdir // pkg ^ ".d" // file
let () =
let ph = {
ph_detect = debian_detect;
ph_resolve_dependencies_and_download =
debian_resolve_dependencies_and_download;
ph_list_files = debian_list_files;
ph_get_file_from_package = debian_get_file_from_package;
} in
register_package_handler "debian" ph
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