diff options
| -rw-r--r-- | erts/preloaded/ebin/erl_prim_loader.beam | bin | 54420 -> 55108 bytes | |||
| -rw-r--r-- | erts/preloaded/src/erl_prim_loader.erl | 110 | ||||
| -rw-r--r-- | lib/stdlib/test/escript_SUITE.erl | 69 | ||||
| -rw-r--r-- | lib/stdlib/test/escript_SUITE_data/archive_script_file_access/archive_script_file_access.erl | 29 |
4 files changed, 137 insertions, 71 deletions
diff --git a/erts/preloaded/ebin/erl_prim_loader.beam b/erts/preloaded/ebin/erl_prim_loader.beam Binary files differindex 19a0693197..80fc79f396 100644 --- a/erts/preloaded/ebin/erl_prim_loader.beam +++ b/erts/preloaded/ebin/erl_prim_loader.beam diff --git a/erts/preloaded/src/erl_prim_loader.erl b/erts/preloaded/src/erl_prim_loader.erl index cd5519f537..5ee3d03fef 100644 --- a/erts/preloaded/src/erl_prim_loader.erl +++ b/erts/preloaded/src/erl_prim_loader.erl @@ -836,7 +836,7 @@ prim_set_primary_archive(PS, ArchiveFile0, ArchiveBin, when is_list(ArchiveFile0), is_binary(ArchiveBin) -> %% Try the archive file debug(PS, {set_primary_archive, ArchiveFile0, byte_size(ArchiveBin)}), - ArchiveFile = absname(ArchiveFile0), + ArchiveFile = real_path(absname(ArchiveFile0)), {Res3, PS3} = case PS#prim_state.primary_archive of undefined -> @@ -1076,7 +1076,7 @@ open_archive(Archive, Acc, Fun) -> %% %% In the archive (zip) file, directory elements might or might not be %% present. To ensure consistency, a directory element is added if it -%% does not already exist (ensure_virual_dir/6). NOTE that there will +%% does not already exist (ensure_virtual_dirs/6). NOTE that there will %% be no such directory element for the top directory of the archive. open_archive(Archive, FileInfo, Acc, Fun) -> FakeFI = FileInfo#file_info{type = directory}, @@ -1243,6 +1243,17 @@ path_split([Head | Tail], Path, Paths) -> path_split([], Path, Paths) -> [Path | Paths]. +%% The opposite of path_split/1 +path_join(Paths) -> + path_join(Paths,[]). + +path_join([""],Acc) -> + Acc; +path_join([Path],Acc) -> + reverse(Path) ++ Acc; +path_join([Path|Paths],Acc) -> + path_join(Paths,"/" ++ reverse(Path) ++ Acc). + name_split(ArchiveFile, File0) -> File = absname(File0), do_name_split(ArchiveFile, File). @@ -1267,7 +1278,7 @@ do_name_split(undefined, File) -> end; do_name_split(ArchiveFile, File) -> %% Look first in primary archive - case string_match(File, ArchiveFile, []) of + case string_match(real_path(File), ArchiveFile, []) of no_match -> %% Archive or plain file do_name_split(undefined, File); @@ -1333,26 +1344,24 @@ ipv4_addr([], D, [C,B,A]) when D < 256 -> {A,B,C,D}. %% A simplified version of filename:absname/1 absname(Name) -> Name2 = normalize(Name, []), - Name3 = - case pathtype(Name2) of - absolute -> - Name2; - relative -> - case prim_file:get_cwd() of - {ok, Cwd} -> - Cwd ++ "/" ++ Name2; - {error, _} -> - Name2 - end; - volumerelative -> - case prim_file:get_cwd() of - {ok, Cwd} -> - absname_vr(Name2, Cwd); - {error, _} -> - Name2 - end - end, - path_flatten(Name3). + case pathtype(Name2) of + absolute -> + Name2; + relative -> + case prim_file:get_cwd() of + {ok, Cwd} -> + Cwd ++ "/" ++ Name2; + {error, _} -> + Name2 + end; + volumerelative -> + case prim_file:get_cwd() of + {ok, Cwd} -> + absname_vr(Name2, Cwd); + {error, _} -> + Name2 + end + end. %% Assumes normalized name absname_vr([$/ | NameRest], [Drive, $\: | _]) -> @@ -1462,25 +1471,42 @@ normalize(Name, Acc) -> %% Remove .. and . from the path, e.g. %% /path/./to/this/../file -> /path/to/file -path_flatten(Name) -> - path_flatten(Name,[],[]). - -path_flatten([$/,$.,$.,$/|Rest],_RevLast,RevTop) -> - path_flatten(Rest,[],RevTop); -path_flatten([$/,$.,$/|Rest],RevLast,RevTop) -> - path_flatten([$/|Rest],RevLast,RevTop); -path_flatten([$/,$.,$.],_RevLast,RevTop) -> - path_flatten([],[],RevTop); -path_flatten([$/,$.],RevLast,RevTop) -> - path_flatten([],RevLast,RevTop); -path_flatten([$/],RevLast,RevTop) -> - path_flatten([],RevLast,RevTop); -path_flatten([$/|Rest],RevLast,RevTop) -> - path_flatten(Rest,[],[$/|RevLast++RevTop]); -path_flatten([Ch|Rest],RevLast,RevTop) -> - path_flatten(Rest,[Ch|RevLast],RevTop); -path_flatten([],RevLast,RevTop) -> - reverse(RevLast++RevTop). +%% This includes resolving symlinks. +%% +%% This is done to ensure that paths are totally normalized before +%% comparing to find out if a file is inside the primary archive or +%% not. +real_path(Name) -> + real_path(Name,reverse(path_split(Name)),[],[]). + +real_path(_Name,[],Acc,_Links) -> + path_join(Acc); +real_path(Name,["."|Paths],Acc,Links) -> + real_path(Name,Paths,Acc,Links); +real_path(Name,[".."|Paths],[""]=Acc,Links) -> + %% /.. -> / (can't get higher than root) + real_path(Name,Paths,Acc,Links); +real_path(Name,[".."|Paths],[Prev|Acc],Links) when Prev=/=".." -> + real_path(Name,Paths,Acc,Links); +real_path(Name,[Path|Paths],Acc,Links) -> + This = [Path|Acc], + ThisFile = path_join(This), + case lists:member(ThisFile,Links) of + true -> % circular!! + Name; + false -> + case prim_file:read_link(ThisFile) of + {ok,Link} -> + case reverse(path_split(Link)) of + [""|_] = LinkPaths -> + real_path(Name,LinkPaths++Paths,[],[ThisFile|Links]); + LinkPaths -> + real_path(Name,LinkPaths++Paths,Acc,[ThisFile|Links]) + end; + _ -> + real_path(Name,Paths,This,Links) + end + end. load_prim_archive(ArchiveFile, ArchiveBin, #file_info{}=FileInfo) -> Fun = fun({Components, _GI, _GB}, A) -> diff --git a/lib/stdlib/test/escript_SUITE.erl b/lib/stdlib/test/escript_SUITE.erl index 7b03fdafe3..38c085616d 100644 --- a/lib/stdlib/test/escript_SUITE.erl +++ b/lib/stdlib/test/escript_SUITE.erl @@ -469,22 +469,23 @@ archive_script(Config) when is_list(Config) -> %% Test the correction of OTP-10071 %% The errors identified are %% -%% * If primary archive was named "xxx", then a file in the same -%% directory named "xxxyyy" would be interpreted as a file named yyy -%% inside the archive. +%% a) If primary archive was named "xxx", then a file in the same +%% directory named "xxxyyy" would be interpreted as a file named yyy +%% inside the archive. %% -%% * erl_prim_loader did not correctly create and normalize absolute -%% paths for primary archive and files inside it, so unless given -%% with exact same path files inside the archive would not be -%% found. E.g. if escript was started as ./xxx then "xxx/file" would -%% not be found since erl_prim_loader would try to match -%% /full/path/to/xxx with /full/path/to/./xxx. Same problem with -%% ../ +%% b) erl_prim_loader did not correctly create and normalize absolute +%% paths for primary archive and files inside it, so unless given +%% with exact same path files inside the archive would not be +%% found. E.g. if escript was started as ./xxx then "xxx/file" +%% would not be found since erl_prim_loader would try to match +%% /full/path/to/xxx with /full/path/to/./xxx. Same problem with +%% ../. Also, the use of symlinks in the path to the archive would +%% cause problems. %% -%% * Depending on how the primary archive was built, -%% erl_prim_loader:list_dir/1 would sometimes return an empty string -%% inside the file list. This was a virtual element representing the -%% top directory of the archive. This shall not occur. +%% c) Depending on how the primary archive was built, +%% erl_prim_loader:list_dir/1 would sometimes return an empty string +%% inside the file list. This was a virtual element representing the +%% top directory of the archive. This shall not occur. %% archive_script_file_access(Config) when is_list(Config) -> %% Copy the orig files to priv_dir @@ -542,18 +543,22 @@ archive_script_file_access(Config) when is_list(Config) -> ok = escript:create(Script1,[shebang,{emu_args,Flags},{archive,Bin1}]), ok = file:change_mode(Script1,8#00744), + %% If supported, create a symlink to the script. This is used to + %% test error b) described above this test case. + SymlinkName1 = "symlink_to_"++ScriptName1, + Symlink1 = filename:join([PrivDir, SymlinkName1]), + file:make_symlink(ScriptName1,Symlink1), % will fail if not supported + %% Also add a dummy file in the same directory with the same name %% as the script except is also has an extension. This used to - %% cause erl_prim_loader to believe it was a file inside the - %% script. + %% test error a) described above this test case. ok = file:write_file(Script1 ++ ".extension", <<"same name as script, but with extension">>), %% Change to script's directory and run it as "./<script_name>" ok = file:set_cwd(PrivDir), - do_run(PrivDir, "./" ++ ScriptName1, - [<<"file_access:[]\n", - "ExitCode:0">>]), + run(PrivDir, "./" ++ ScriptName1 ++ " " ++ ScriptName1, + [<<"ExitCode:0">>]), ok = file:set_cwd(TopDir), @@ -574,18 +579,34 @@ archive_script_file_access(Config) when is_list(Config) -> %% Also add a dummy file in the same directory with the same name %% as the script except is also has an extension. This used to - %% cause erl_prim_loader to believe it was a file inside the - %% script. + %% test error a) described above this test case. ok = file:write_file(Script2 ++ ".extension", <<"same name as script, but with extension">>), + %% If supported, create a symlink to the script. This is used to + %% test error b) described above this test case. + SymlinkName2 = "symlink_to_"++ScriptName2, + Symlink2 = filename:join([PrivDir, SymlinkName2]), + file:make_symlink(ScriptName2,Symlink2), % will fail if not supported + %% Change to script's directory and run it as "./<script_name>" ok = file:set_cwd(PrivDir), - do_run(PrivDir, "./" ++ ScriptName2, - [<<"file_access:[]\n", - "ExitCode:0">>]), + run(PrivDir, "./" ++ ScriptName2 ++ " " ++ ScriptName2, + [<<"ExitCode:0">>]), + + %% 3. If symlinks are supported, run one of the scripts via a symlink. + %% + %% This is in order to test error b) described above this test case. + case file:read_link(Symlink2) of + {ok,_} -> + run(PrivDir, "./" ++ SymlinkName2 ++ " " ++ ScriptName2, + [<<"ExitCode:0">>]); + _ -> % not supported + ok + end, ok = file:set_cwd(OldDir). + compile_app(TopDir, AppName) -> AppDir = filename:join([TopDir, AppName]), SrcDir = filename:join([AppDir, "src"]), diff --git a/lib/stdlib/test/escript_SUITE_data/archive_script_file_access/archive_script_file_access.erl b/lib/stdlib/test/escript_SUITE_data/archive_script_file_access/archive_script_file_access.erl index 226a8675db..b03c8ba70d 100644 --- a/lib/stdlib/test/escript_SUITE_data/archive_script_file_access/archive_script_file_access.erl +++ b/lib/stdlib/test/escript_SUITE_data/archive_script_file_access/archive_script_file_access.erl @@ -23,12 +23,9 @@ -include_lib("kernel/include/file.hrl"). -main(MainArgs) -> - io:format("file_access:~p\n", [MainArgs]), - ArchiveFile = escript:script_name(), +main([RelArchiveFile]) -> - AbsArchiveFile = filename:absname(ArchiveFile), - RelArchiveFile = filename:basename(ArchiveFile), + AbsArchiveFile = filename:absname(RelArchiveFile), DotSlashArchiveFile = "./" ++ RelArchiveFile, Beam = atom_to_list(?MODULE) ++ ".beam", @@ -39,6 +36,10 @@ main(MainArgs) -> AbsDir = filename:join(AbsArchiveFile,Dir), RelDir = filename:join(RelArchiveFile,Dir), DotSlashDir = filename:join(DotSlashArchiveFile,Dir), + SubDir = "subdir1", + AbsSubDir = filename:join(AbsDir,SubDir), + RelSubDir = filename:join(RelDir,SubDir), + DotSlashSubDir = filename:join(DotSlashDir,SubDir), {ok,List1} = erl_prim_loader:list_dir(AbsArchiveFile), {ok,List1} = erl_prim_loader:list_dir(RelArchiveFile), @@ -48,8 +49,26 @@ main(MainArgs) -> {ok,List1} = erl_prim_loader:list_dir(filename:join([AbsDir,".."])), {ok,List1} = erl_prim_loader:list_dir(filename:join([RelDir,".."])), {ok,List1} = erl_prim_loader:list_dir(filename:join([DotSlashDir,".."])), + {ok,List1} = erl_prim_loader:list_dir(filename:join([AbsSubDir,"..",".."])), + {ok,List1} = erl_prim_loader:list_dir(filename:join([RelSubDir,"..",".."])), + {ok,List1} = erl_prim_loader:list_dir(filename:join([DotSlashSubDir,"..",".."])), false = lists:member([],List1), + %% If symlinks are supported on this platform... + RelSymlinkArchiveFile = "symlink_to_" ++ RelArchiveFile, + case file:read_link(RelSymlinkArchiveFile) of + {ok,_} -> + DotSlashSymlinkArchiveFile = "./" ++ RelSymlinkArchiveFile, + AbsSymlinkArchiveFile=filename:join(filename:dirname(AbsArchiveFile), + RelSymlinkArchiveFile), + {ok,List1} = erl_prim_loader:list_dir(AbsSymlinkArchiveFile), + {ok,List1} = erl_prim_loader:list_dir(RelSymlinkArchiveFile), + {ok,List1} = erl_prim_loader:list_dir(DotSlashSymlinkArchiveFile); + _ -> % not supported + ok + end, + + {ok,List2} = erl_prim_loader:list_dir(AbsDir), {ok,List2} = erl_prim_loader:list_dir(RelDir), {ok,List2} = erl_prim_loader:list_dir(DotSlashDir), |