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-rw-r--r--lib/stdlib/src/beam_lib.erl105
1 files changed, 70 insertions, 35 deletions
diff --git a/lib/stdlib/src/beam_lib.erl b/lib/stdlib/src/beam_lib.erl
index 461acf03be..9e5e7b2e7e 100644
--- a/lib/stdlib/src/beam_lib.erl
+++ b/lib/stdlib/src/beam_lib.erl
@@ -54,6 +54,7 @@
%%-------------------------------------------------------------------------
-type beam() :: module() | file:filename() | binary().
+-type debug_info() :: {DbgiVersion :: atom(), Backend :: module(), Data :: term()} | 'no_debug_info'.
-type forms() :: [erl_parse:abstract_form() | erl_parse:form_info()].
@@ -63,8 +64,9 @@
-type label() :: integer().
-type chunkid() :: nonempty_string(). % approximation of the strings below
-%% "Abst" | "Attr" | "CInf" | "ExpT" | "ImpT" | "LocT" | "Atom" | "AtU8".
--type chunkname() :: 'abstract_code' | 'attributes' | 'compile_info'
+%% "Abst" | "Dbgi" | "Attr" | "CInf" | "ExpT" | "ImpT" | "LocT" | "Atom" | "AtU8".
+-type chunkname() :: 'abstract_code' | 'debug_info'
+ | 'attributes' | 'compile_info'
| 'exports' | 'labeled_exports'
| 'imports' | 'indexed_imports'
| 'locals' | 'labeled_locals'
@@ -77,6 +79,7 @@
-type chunkdata() :: {chunkid(), dataB()}
| {'abstract_code', abst_code()}
+ | {'debug_info', debug_info()}
| {'attributes', [attrib_entry()]}
| {'compile_info', [compinfo_entry()]}
| {'exports', [{atom(), arity()}]}
@@ -99,7 +102,7 @@
| {'file_error', file:filename(), file:posix()}.
-type chnk_rsn() :: {'unknown_chunk', file:filename(), atom()}
| {'key_missing_or_invalid', file:filename(),
- 'abstract_code'}
+ 'abstract_code' | 'debug_info'}
| info_rsn().
-type cmp_rsn() :: {'modules_different', module(), module()}
| {'chunks_different', chunkid()}
@@ -267,9 +270,9 @@ format_error({modules_different, Module1, Module2}) ->
[Module1, Module2]);
format_error({not_a_directory, Name}) ->
io_lib:format("~tp: Not a directory~n", [Name]);
-format_error({key_missing_or_invalid, File, abstract_code}) ->
- io_lib:format("~tp: Cannot decrypt abstract code because key is missing or invalid",
- [File]);
+format_error({key_missing_or_invalid, File, ChunkId}) ->
+ io_lib:format("~tp: Cannot decrypt ~ts because key is missing or invalid",
+ [File, ChunkId]);
format_error(badfun) ->
"not a fun or the fun has the wrong arity";
format_error(exists) ->
@@ -510,9 +513,9 @@ read_chunk_data(File0, ChunkNames) ->
read_chunk_data(File0, ChunkNames0, Options)
when is_atom(File0); is_list(File0); is_binary(File0) ->
File = beam_filename(File0),
- {ChunkIds, Names} = check_chunks(ChunkNames0, File, [], []),
+ {ChunkIds, Names, Optional} = check_chunks(ChunkNames0, File, [], [], []),
AllowMissingChunks = member(allow_missing_chunks, Options),
- {ok, Module, Chunks} = scan_beam(File, ChunkIds, AllowMissingChunks),
+ {ok, Module, Chunks} = scan_beam(File, ChunkIds, AllowMissingChunks, Optional),
AT = ets:new(beam_symbols, []),
T = {empty, AT},
try chunks_to_data(Names, Chunks, File, Chunks, Module, T, [])
@@ -520,31 +523,34 @@ read_chunk_data(File0, ChunkNames0, Options)
end.
%% -> {ok, list()} | throw(Error)
-check_chunks([atoms | Ids], File, IL, L) ->
- check_chunks(Ids, File, ["Atom", "AtU8" | IL], [{atom_chunk, atoms} | L]);
-check_chunks([ChunkName | Ids], File, IL, L) when is_atom(ChunkName) ->
+check_chunks([atoms | Ids], File, IL, L, O) ->
+ check_chunks(Ids, File, ["Atom", "AtU8" | IL],
+ [{atom_chunk, atoms} | L], ["Atom", "AtU8" | O]);
+check_chunks([abstract_code | Ids], File, IL, L, O) ->
+ check_chunks(Ids, File, ["Abst", "Dbgi" | IL],
+ [{abst_chunk, abstract_code} | L], ["Abst", "Dbgi" | O]);
+check_chunks([ChunkName | Ids], File, IL, L, O) when is_atom(ChunkName) ->
ChunkId = chunk_name_to_id(ChunkName, File),
- check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkName} | L]);
-check_chunks([ChunkId | Ids], File, IL, L) -> % when is_list(ChunkId)
- check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkId} | L]);
-check_chunks([], _File, IL, L) ->
- {lists:usort(IL), reverse(L)}.
+ check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkName} | L], O);
+check_chunks([ChunkId | Ids], File, IL, L, O) -> % when is_list(ChunkId)
+ check_chunks(Ids, File, [ChunkId | IL], [{ChunkId, ChunkId} | L], O);
+check_chunks([], _File, IL, L, O) ->
+ {lists:usort(IL), reverse(L), O}.
%% -> {ok, Module, Data} | throw(Error)
scan_beam(File, What) ->
- scan_beam(File, What, false).
+ scan_beam(File, What, false, []).
%% -> {ok, Module, Data} | throw(Error)
-scan_beam(File, What0, AllowMissingChunks) ->
+scan_beam(File, What0, AllowMissingChunks, OptionalChunks) ->
case scan_beam1(File, What0) of
{missing, _FD, Mod, Data, What} when AllowMissingChunks ->
{ok, Mod, [{Id, missing_chunk} || Id <- What] ++ Data};
- {missing, _FD, Mod, Data, ["Atom"]} ->
- {ok, Mod, Data};
- {missing, _FD, Mod, Data, ["AtU8"]} ->
- {ok, Mod, Data};
- {missing, FD, _Mod, _Data, What} ->
- error({missing_chunk, filename(FD), hd(What)});
+ {missing, FD, Mod, Data, What} ->
+ case What -- OptionalChunks of
+ [] -> {ok, Mod, Data};
+ [Missing | _] -> error({missing_chunk, filename(FD), Missing})
+ end;
R ->
R
end.
@@ -638,6 +644,22 @@ get_chunk(Id, Pos, Size, FD) ->
chunks_to_data([{atom_chunk, Name} | CNs], Chunks, File, Cs, Module, Atoms, L) ->
{NewAtoms, Ret} = chunk_to_data(Name, <<"">>, File, Cs, Atoms, Module),
chunks_to_data(CNs, Chunks, File, Cs, Module, NewAtoms, [Ret | L]);
+chunks_to_data([{abst_chunk, Name} | CNs], Chunks, File, Cs, Module, Atoms, L) ->
+ DbgiChunk = proplists:get_value("Dbgi", Chunks, <<"">>),
+ {NewAtoms, Ret} =
+ case catch chunk_to_data(debug_info, DbgiChunk, File, Cs, Atoms, Module) of
+ {DbgiAtoms, {debug_info, {debug_info_v1, Backend, Metadata}}} ->
+ case Backend:debug_info(erlang_v1, Module, Metadata, []) of
+ {ok, Code} -> {DbgiAtoms, {abstract_code, {raw_abstract_v1, Code}}};
+ {error, _} -> {DbgiAtoms, {abstract_code, no_abstract_code}}
+ end;
+ {error,beam_lib,{key_missing_or_invalid,Path,debug_info}} ->
+ error({key_missing_or_invalid,Path,abstract_code});
+ _ ->
+ AbstChunk = proplists:get_value("Abst", Chunks, <<"">>),
+ chunk_to_data(Name, AbstChunk, File, Cs, Atoms, Module)
+ end,
+ chunks_to_data(CNs, Chunks, File, Cs, Module, NewAtoms, [Ret | L]);
chunks_to_data([{Id, Name} | CNs], Chunks, File, Cs, Module, Atoms, L) ->
{_Id, Chunk} = lists:keyfind(Id, 1, Chunks),
{NewAtoms, Ret} = chunk_to_data(Name, Chunk, File, Cs, Atoms, Module),
@@ -660,13 +682,30 @@ chunk_to_data(compile_info=Id, Chunk, File, _Cs, AtomTable, _Mod) ->
error:badarg ->
error({invalid_chunk, File, chunk_name_to_id(Id, File)})
end;
+chunk_to_data(debug_info=Id, Chunk, File, _Cs, AtomTable, Mod) ->
+ case Chunk of
+ <<>> ->
+ {AtomTable, {Id, no_debug_info}};
+ <<0:8,N:8,Mode0:N/binary,Rest/binary>> ->
+ Mode = binary_to_atom(Mode0, utf8),
+ Term = decrypt_chunk(Mode, Mod, File, Id, Rest),
+ {AtomTable, {Id, Term}};
+ _ ->
+ case catch binary_to_term(Chunk) of
+ {'EXIT', _} ->
+ error({invalid_chunk, File, chunk_name_to_id(Id, File)});
+ Term ->
+ {AtomTable, {Id, Term}}
+ end
+ end;
chunk_to_data(abstract_code=Id, Chunk, File, _Cs, AtomTable, Mod) ->
case Chunk of
<<>> ->
{AtomTable, {Id, no_abstract_code}};
<<0:8,N:8,Mode0:N/binary,Rest/binary>> ->
Mode = binary_to_atom(Mode0, utf8),
- decrypt_abst(Mode, Mod, File, Id, AtomTable, Rest);
+ Term = decrypt_chunk(Mode, Mod, File, Id, Rest),
+ {AtomTable, {Id, anno_from_term(Term)}};
_ ->
case catch binary_to_term(Chunk) of
{'EXIT', _} ->
@@ -705,6 +744,7 @@ chunk_name_to_id(locals, _) -> "LocT";
chunk_name_to_id(labeled_locals, _) -> "LocT";
chunk_name_to_id(attributes, _) -> "Attr";
chunk_name_to_id(abstract_code, _) -> "Abst";
+chunk_name_to_id(debug_info, _) -> "Dbgi";
chunk_name_to_id(compile_info, _) -> "CInf";
chunk_name_to_id(Other, File) ->
error({unknown_chunk, File, Other}).
@@ -894,23 +934,18 @@ mandatory_chunks() ->
-define(CRYPTO_KEY_SERVER, beam_lib__crypto_key_server).
-decrypt_abst(Type, Module, File, Id, AtomTable, Bin) ->
+decrypt_chunk(Type, Module, File, Id, Bin) ->
try
KeyString = get_crypto_key({debug_info, Type, Module, File}),
- Key = make_crypto_key(Type, KeyString),
- Term = decrypt_abst_1(Key, Bin),
- {AtomTable, {Id, Term}}
+ {Type,Key,IVec,_BlockSize} = make_crypto_key(Type, KeyString),
+ ok = start_crypto(),
+ NewBin = crypto:block_decrypt(Type, Key, IVec, Bin),
+ binary_to_term(NewBin)
catch
_:_ ->
error({key_missing_or_invalid, File, Id})
end.
-decrypt_abst_1({Type,Key,IVec,_BlockSize}, Bin) ->
- ok = start_crypto(),
- NewBin = crypto:block_decrypt(Type, Key, IVec, Bin),
- Term = binary_to_term(NewBin),
- anno_from_term(Term).
-
anno_from_term({raw_abstract_v1, Forms}) ->
{raw_abstract_v1, anno_from_forms(Forms)};
anno_from_term({Tag, Forms}) when Tag =:= abstract_v1; Tag =:= abstract_v2 ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 13:34:22 +0000