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File 0549-ct-Improve-error-handling-of-bad-regular-expressions.patch of Package erlang
From b55d02e92d7fb8244da333ee5bbd794aa6090ff5 Mon Sep 17 00:00:00 2001 From: Siri Hansen <siri@erlang.org> Date: Wed, 30 Jan 2019 19:42:32 +0100 Subject: [PATCH 1/2] [ct] Improve error handling of bad regular expressions to ct_telnet --- lib/common_test/src/ct_telnet.erl | 135 +++++++++++++-------- lib/common_test/test/ct_telnet_SUITE.erl | 39 +++++- .../ct_telnet_faulty_regexp_SUITE.erl | 79 ++++++++++++ 3 files changed, 198 insertions(+), 55 deletions(-) create mode 100644 lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl diff --git a/lib/common_test/src/ct_telnet.erl b/lib/common_test/src/ct_telnet.erl index f9abecfd38..3df06cb3b4 100644 --- a/lib/common_test/src/ct_telnet.erl +++ b/lib/common_test/src/ct_telnet.erl @@ -211,10 +211,16 @@ expect(Connection,Patterns) -> %%% combined in order to match a sequence multiple times.</p> expect(Connection,Patterns,Opts) -> case get_handle(Connection) of - {ok,Pid} -> - call(Pid,{expect,Patterns,Opts}); - Error -> - Error + {ok,Pid} -> + case call(Pid,{expect,Patterns,Opts}) of + {error,Reason} when element(1,Reason)==bad_pattern -> + %% Faulty user input - should fail the test case + exit({Reason,{?MODULE,?FUNCTION_NAME,3}}); + Other -> + Other + end; + Error -> + Error end. %%%================================================================= @@ -674,60 +680,68 @@ silent_teln_expect(Name,Pid,Data,Pattern,Prx,Opts) -> %% 3b) Repeat (sequence): 2) is repeated either N times or until a %% halt condition is fullfilled. teln_expect(Name,Pid,Data,Pattern0,Prx,Opts) -> - HaltPatterns = + HaltPatterns0 = case get_ignore_prompt(Opts) of true -> get_haltpatterns(Opts); false -> [prompt | get_haltpatterns(Opts)] end, - - PromptCheck = get_prompt_check(Opts), - - {WaitForPrompt,Pattern1,Opts1} = wait_for_prompt(Pattern0,Opts), - - Seq = get_seq(Opts1), - Pattern2 = convert_pattern(Pattern1,Seq), - {IdleTimeout,TotalTimeout} = get_timeouts(Opts1), - - EO = #eo{teln_pid=Pid, - prx=Prx, - idle_timeout=IdleTimeout, - total_timeout=TotalTimeout, - seq=Seq, - haltpatterns=HaltPatterns, - prompt_check=PromptCheck}, + case convert_pattern(HaltPatterns0,false) of + {ok,HaltPatterns} -> + {WaitForPrompt,Pattern1,Opts1} = wait_for_prompt(Pattern0,Opts), + Seq = get_seq(Opts1), + case convert_pattern(Pattern1,Seq) of + {ok,Pattern2} -> + {IdleTimeout,TotalTimeout} = get_timeouts(Opts1), + PromptCheck = get_prompt_check(Opts1), + + EO = #eo{teln_pid=Pid, + prx=Prx, + idle_timeout=IdleTimeout, + total_timeout=TotalTimeout, + seq=Seq, + haltpatterns=HaltPatterns, + prompt_check=PromptCheck}, - case get_repeat(Opts1) of - false -> - case teln_expect1(Name,Pid,Data,Pattern2,[],EO) of - {ok,Matched,Rest} when WaitForPrompt -> - case lists:reverse(Matched) of - [{prompt,_},Matched1] -> - {ok,Matched1,Rest}; - [{prompt,_}|Matched1] -> - {ok,lists:reverse(Matched1),Rest} - end; - {ok,Matched,Rest} -> - {ok,Matched,Rest}; - {halt,Why,Rest} -> - {error,Why,Rest}; - {error,Reason} -> - {error,Reason} - end; - N -> - EO1 = EO#eo{repeat=N}, - repeat_expect(Name,Pid,Data,Pattern2,[],EO1) + case get_repeat(Opts1) of + false -> + case teln_expect1(Name,Pid,Data,Pattern2,[],EO) of + {ok,Matched,Rest} when WaitForPrompt -> + case lists:reverse(Matched) of + [{prompt,_},Matched1] -> + {ok,Matched1,Rest}; + [{prompt,_}|Matched1] -> + {ok,lists:reverse(Matched1),Rest} + end; + {ok,Matched,Rest} -> + {ok,Matched,Rest}; + {halt,Why,Rest} -> + {error,Why,Rest}; + {error,Reason} -> + {error,Reason} + end; + N -> + EO1 = EO#eo{repeat=N}, + repeat_expect(Name,Pid,Data,Pattern2,[],EO1) + end; + Error -> + Error + end; + Error -> + Error end. -convert_pattern(Pattern,Seq) - when is_list(Pattern) and not is_integer(hd(Pattern)) -> - case Seq of - true -> Pattern; - false -> rm_dupl(Pattern,[]) - end; +convert_pattern(Pattern0,Seq) + when Pattern0==[] orelse (is_list(Pattern0) and not is_integer(hd(Pattern0))) -> + Pattern = + case Seq of + true -> Pattern0; + false -> rm_dupl(Pattern0,[]) + end, + compile_pattern(Pattern,[]); convert_pattern(Pattern,_Seq) -> - [Pattern]. + compile_pattern([Pattern],[]). rm_dupl([P|Ps],Acc) -> case lists:member(P,Acc) of @@ -739,6 +753,25 @@ rm_dupl([P|Ps],Acc) -> rm_dupl([],Acc) -> lists:reverse(Acc). +compile_pattern([prompt|Patterns],Acc) -> + compile_pattern(Patterns,[prompt|Acc]); +compile_pattern([{prompt,_}=P|Patterns],Acc) -> + compile_pattern(Patterns,[P|Acc]); +compile_pattern([{Tag,Pattern}|Patterns],Acc) -> + try re:compile(Pattern,[unicode]) of + {ok,MP} -> compile_pattern(Patterns,[{Tag,MP}|Acc]); + {error,Error} -> {error,{bad_pattern,{Tag,Pattern},Error}} + catch error:badarg -> {error,{bad_pattern,{Tag,Pattern}}} + end; +compile_pattern([Pattern|Patterns],Acc) -> + try re:compile(Pattern,[unicode]) of + {ok,MP} -> compile_pattern(Patterns,[MP|Acc]); + {error,Error} -> {error,{bad_pattern,Pattern,Error}} + catch error:badarg -> {error,{bad_pattern,Pattern}} + end; +compile_pattern([],Acc) -> + {ok,lists:reverse(Acc)}. + get_timeouts(Opts) -> {case lists:keysearch(idle_timeout,1,Opts) of {value,{_,T}} -> @@ -772,7 +805,7 @@ get_seq(Opts) -> get_haltpatterns(Opts) -> case lists:keysearch(halt,1,Opts) of {value,{halt,HaltPatterns}} -> - convert_pattern(HaltPatterns,false); + HaltPatterns; false -> [] end. diff --git a/lib/common_test/test/ct_telnet_SUITE.erl b/lib/common_test/test/ct_telnet_SUITE.erl index a0089c9bc9..f71b7c370f 100644 --- a/lib/common_test/test/ct_telnet_SUITE.erl +++ b/lib/common_test/test/ct_telnet_SUITE.erl @@ -50,10 +50,10 @@ suite() -> [{ct_hooks,[ts_install_cth]}]. groups() -> - [{legacy, [], [unix_telnet,own_server,timetrap]}, - {raw, [], [unix_telnet,own_server,timetrap]}, - {html, [], [unix_telnet,own_server]}, - {silent, [], [unix_telnet,own_server]}]. + [{legacy, [], [unix_telnet,own_server,faulty_regexp,timetrap]}, + {raw, [], [unix_telnet,own_server,faulty_regexp,timetrap]}, + {html, [], [unix_telnet,own_server,faulty_regexp]}, + {silent, [], [unix_telnet,own_server,faulty_regexp]}]. all() -> [ @@ -119,6 +119,12 @@ own_server(Config) -> all_tests_in_suite(own_server,"ct_telnet_own_server_SUITE", CfgFile,Config). +faulty_regexp(Config) -> + CfgFile = "telnet.faulty_regexp." ++ + atom_to_list(groupname(Config)) ++ ".cfg", + all_tests_in_suite(faulty_regexp,"ct_telnet_faulty_regexp_SUITE", + CfgFile,Config). + timetrap(Config) -> CfgFile = "telnet.timetrap." ++ atom_to_list(groupname(Config)) ++ ".cfg", @@ -225,6 +231,31 @@ events_to_check(unix_telnet,Config) -> all_cases(ct_telnet_basic_SUITE,Config); events_to_check(own_server,Config) -> all_cases(ct_telnet_own_server_SUITE,Config); +events_to_check(faulty_regexp,_Config) -> + [{?eh,start_logging,{'DEF','RUNDIR'}}, + {?eh,tc_done, + {ct_telnet_faulty_regexp_SUITE,expect_pattern, + {failed, + {error,{{bad_pattern,"invalid(pattern",{"missing )",15}}, + {ct_telnet,expect,3}}}}}}, + {?eh,tc_done, + {ct_telnet_faulty_regexp_SUITE,expect_pattern_no_string, + {failed, + {error,{{bad_pattern,invalid_pattern}, + {ct_telnet,expect,3}}}}}}, + {?eh,tc_done, + {ct_telnet_faulty_regexp_SUITE,expect_tag_pattern, + {failed, + {error,{{bad_pattern,{tag,"invalid(pattern"},{"missing )",15}}, + {ct_telnet,expect,3}}}}}}, + {?eh,tc_done, + {ct_telnet_faulty_regexp_SUITE,expect_tag_pattern_no_string, + {failed, + {error,{{bad_pattern,{tag,invalid_pattern}}, + {ct_telnet,expect,3}}}}}}, + {?eh,tc_done,{ct_telnet_faulty_regexp_SUITE,expect_pattern_unicode,ok}}, + {?eh,tc_done,{ct_telnet_faulty_regexp_SUITE,expect_tag_pattern_unicode,ok}}, + {?eh,stop_logging,[]}]; events_to_check(timetrap,_Config) -> [{?eh,start_logging,{'DEF','RUNDIR'}}, {?eh,tc_done,{ct_telnet_timetrap_SUITE,expect_timetrap, diff --git a/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl new file mode 100644 index 0000000000..a5c9451a9c --- /dev/null +++ b/lib/common_test/test/ct_telnet_SUITE_data/ct_telnet_faulty_regexp_SUITE.erl @@ -0,0 +1,79 @@ +-module(ct_telnet_faulty_regexp_SUITE). + +-compile(export_all). + +-include_lib("common_test/include/ct.hrl"). + +-define(name, telnet_server_conn1). + +%%-------------------------------------------------------------------- +%% TEST SERVER CALLBACK FUNCTIONS +%%-------------------------------------------------------------------- + +init_per_suite(Config) -> + Config. + +end_per_suite(_Config) -> + ok. + +suite() -> [{require,?name,{unix,[telnet]}}, + {require,ct_conn_log}, + {ct_hooks, [{cth_conn_log,[]}]}]. + +all() -> + [expect_pattern, + expect_pattern_no_string, + expect_tag_pattern, + expect_tag_pattern_no_string, + expect_pattern_unicode, + expect_tag_pattern_unicode]. + +groups() -> + []. + +init_per_group(_GroupName, Config) -> + Config. + +end_per_group(_GroupName, Config) -> + Config. + +init_per_testcase(_,Config) -> + ct:log("init_per_testcase: opening telnet connection...",[]), + {ok,_} = ct_telnet:open(?name), + ct:log("...done",[]), + Config. + +end_per_testcase(_,_Config) -> + ct:log("end_per_testcase: closing telnet connection...",[]), + _ = ct_telnet:close(?name), + ct:log("...done",[]), + ok. + +expect_pattern(_) -> + ok = ct_telnet:send(?name, "echo ayt"), + ok = ct_telnet:expect(?name, "invalid(pattern"). + +expect_pattern_no_string(_) -> + ok = ct_telnet:send(?name, "echo ayt"), + ok = ct_telnet:expect(?name, invalid_pattern). + +expect_tag_pattern(_) -> + ok = ct_telnet:send(?name, "echo ayt"), + ok = ct_telnet:expect(?name, {tag,"invalid(pattern"}). + +expect_tag_pattern_no_string(_) -> + ok = ct_telnet:send(?name, "echo ayt"), + ok = ct_telnet:expect(?name, {tag,invalid_pattern}). + +%% Test that a unicode pattern can be given without the testcase +%% failing. Do however notice that there is no real unicode support +%% in ct_telnet yet, that is, the telnet binary mode is not supported. +expect_pattern_unicode(_) -> + ok = ct_telnet:send(?name, "echo ayt"), + {error,{prompt,_}} = ct_telnet:expect(?name, "pattern_with_unicode_αβ"), + ok. + +expect_tag_pattern_unicode(_) -> + ok = ct_telnet:send(?name, "echo ayt"), + {error,{prompt,_}} = ct_telnet:expect(?name, "pattern_with_unicode_αβ"), + ok. -- 2.16.4
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