%% ``Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
%% AB. All Rights Reserved.''
%%
%% $Id: mod_include.erl,v 1.1 2008/12/17 09:53:35 mikpe Exp $
-module(mod_include).
-export([do/1,parse/2,config/6,include/6,echo/6,fsize/6,flastmod/6,exec/6]).
-include("httpd.hrl").
-define(VMODULE,"INCLUDE").
-include("httpd_verbosity.hrl").
%% do
do(Info) ->
?vtrace("do",[]),
case Info#mod.method of
"GET" ->
case httpd_util:key1search(Info#mod.data,status) of
%% A status code has been generated!
{StatusCode,PhraseArgs,Reason} ->
{proceed,Info#mod.data};
%% No status code has been generated!
undefined ->
case httpd_util:key1search(Info#mod.data, response) of
%% No response has been generated!
undefined ->
do_include(Info);
%% A response has been generated or sent!
Response ->
{proceed,Info#mod.data}
end
end;
%% Not a GET method!
_ ->
{proceed,Info#mod.data}
end.
do_include(Info) ->
?vtrace("do_include -> entry with"
"~n URI: ~p",[Info#mod.request_uri]),
Path = mod_alias:path(Info#mod.data,Info#mod.config_db,
Info#mod.request_uri),
Suffix = httpd_util:suffix(Path),
case httpd_util:lookup_mime_default(Info#mod.config_db,Suffix) of
"text/x-server-parsed-html" ->
HeaderStart =
httpd_util:header(200, "text/html", Info#mod.connection),
?vtrace("do_include -> send ~p", [Path]),
case send_in(Info,Path,HeaderStart,file:read_file_info(Path)) of
{ok, ErrorLog, Size} ->
?vtrace("do_include -> sent ~w bytes", [Size]),
{proceed,[{response,{already_sent,200,Size}},
{mime_type,"text/html"}|
lists:append(ErrorLog,Info#mod.data)]};
{error, Reason} ->
?vlog("send in failed:"
"~n Reason: ~p"
"~n Path: ~p"
"~n Info: ~p",
[Reason,Info,Path]),
{proceed,
[{status,send_error(Reason,Info,Path)}|Info#mod.data]}
end;
_ -> %% Unknown mime type, ignore
{proceed,Info#mod.data}
end.
%%
%% config directive
%%
config(Info, Context, ErrorLog, TagList, ValueList, R) ->
case verify_tags("config",[errmsg,timefmt,sizefmt],
TagList,ValueList) of
ok ->
{ok,update_context(TagList,ValueList,Context),ErrorLog,"",R};
{error,Reason} ->
{ok,Context,[{internal_info,Reason}|ErrorLog],
httpd_util:key1search(Context,errmsg,""),R}
end.
update_context([],[],Context) ->
Context;
update_context([Tag|R1],[Value|R2],Context) ->
update_context(R1,R2,[{Tag,Value}|Context]).
verify_tags(Command,ValidTags,TagList,ValueList) when length(TagList)==length(ValueList) ->
verify_tags(Command,ValidTags,TagList);
verify_tags(Command,ValidTags,TagList,ValueList) ->
{error,?NICE(Command++" directive has spurious tags")}.
verify_tags(Command, ValidTags, []) ->
ok;
verify_tags(Command, ValidTags, [Tag|Rest]) ->
case lists:member(Tag, ValidTags) of
true ->
verify_tags(Command, ValidTags, Rest);
false ->
{error,?NICE(Command++" directive has a spurious tag ("++
atom_to_list(Tag)++")")}
end.
%%
%% include directive
%%
include(Info,Context,ErrorLog,[virtual],[VirtualPath],R) ->
Aliases = httpd_util:multi_lookup(Info#mod.config_db,alias),
{_, Path, _AfterPath} =
mod_alias:real_name(Info#mod.config_db, VirtualPath, Aliases),
include(Info,Context,ErrorLog,R,Path);
include(Info, Context, ErrorLog, [file], [FileName], R) ->
Path = file(Info#mod.config_db, Info#mod.request_uri, FileName),
include(Info, Context, ErrorLog, R, Path);
include(Info, Context, ErrorLog, TagList, ValueList, R) ->
{ok, Context,
[{internal_info,?NICE("include directive has a spurious tag")}|
ErrorLog], httpd_util:key1search(Context, errmsg, ""), R}.
include(Info, Context, ErrorLog, R, Path) ->
?DEBUG("include -> read file: ~p",[Path]),
case file:read_file(Path) of
{ok, Body} ->
?DEBUG("include -> size(Body): ~p",[size(Body)]),
{ok, NewContext, NewErrorLog, Result} =
parse(Info, binary_to_list(Body), Context, ErrorLog, []),
{ok, Context, NewErrorLog, Result, R};
{error, Reason} ->
{ok, Context,
[{internal_info, ?NICE("Can't open "++Path)}|ErrorLog],
httpd_util:key1search(Context, errmsg, ""), R}
end.
file(ConfigDB, RequestURI, FileName) ->
Aliases = httpd_util:multi_lookup(ConfigDB, alias),
{_, Path, _AfterPath}
= mod_alias:real_name(ConfigDB, RequestURI, Aliases),
Pwd = filename:dirname(Path),
filename:join(Pwd, FileName).
%%
%% echo directive
%%
echo(Info,Context,ErrorLog,[var],["DOCUMENT_NAME"],R) ->
{ok,Context,ErrorLog,document_name(Info#mod.data,Info#mod.config_db,
Info#mod.request_uri),R};
echo(Info,Context,ErrorLog,[var],["DOCUMENT_URI"],R) ->
{ok,Context,ErrorLog,document_uri(Info#mod.config_db,
Info#mod.request_uri),R};
echo(Info,Context,ErrorLog,[var],["QUERY_STRING_UNESCAPED"],R) ->
{ok,Context,ErrorLog,query_string_unescaped(Info#mod.request_uri),R};
echo(Info,Context,ErrorLog,[var],["DATE_LOCAL"],R) ->
{ok,Context,ErrorLog,date_local(),R};
echo(Info,Context,ErrorLog,[var],["DATE_GMT"],R) ->
{ok,Context,ErrorLog,date_gmt(),R};
echo(Info,Context,ErrorLog,[var],["LAST_MODIFIED"],R) ->
{ok,Context,ErrorLog,last_modified(Info#mod.data,Info#mod.config_db,
Info#mod.request_uri),R};
echo(Info,Context,ErrorLog,TagList,ValueList,R) ->
{ok,Context,
[{internal_info,?NICE("echo directive has a spurious tag")}|
ErrorLog],"(none)",R}.
document_name(Data,ConfigDB,RequestURI) ->
Path = mod_alias:path(Data,ConfigDB,RequestURI),
case regexp:match(Path,"[^/]*\$") of
{match,Start,Length} ->
string:substr(Path,Start,Length);
nomatch ->
"(none)"
end.
document_uri(ConfigDB, RequestURI) ->
Aliases = httpd_util:multi_lookup(ConfigDB, alias),
{Path, AfterPath} =
case mod_alias:real_name(ConfigDB, RequestURI, Aliases) of
{_, Name, {[], []}} ->
{Name, ""};
{_, Name, {PathInfo, []}} ->
{Name, "/"++PathInfo};
{_, Name, {PathInfo, QueryString}} ->
{Name, "/"++PathInfo++"?"++QueryString};
{_, Name, _} ->
{Name, ""};
Gurka ->
io:format("Gurka: ~p~n", [Gurka])
end,
VirtualPath = string:substr(RequestURI, 1,
length(RequestURI)-length(AfterPath)),
{match, Start, Length} = regexp:match(Path,"[^/]*\$"),
FileName = string:substr(Path,Start,Length),
case regexp:match(VirtualPath, FileName++"\$") of
{match, _, _} ->
httpd_util:decode_hex(VirtualPath)++AfterPath;
nomatch ->
string:strip(httpd_util:decode_hex(VirtualPath),right,$/)++
"/"++FileName++AfterPath
end.
query_string_unescaped(RequestURI) ->
case regexp:match(RequestURI,"[\?].*\$") of
{match,Start,Length} ->
%% Escape all shell-special variables with \
escape(string:substr(RequestURI,Start+1,Length-1));
nomatch ->
"(none)"
end.
escape([]) -> [];
escape([$;|R]) -> [$\\,$;|escape(R)];
escape([$&|R]) -> [$\\,$&|escape(R)];
escape([$(|R]) -> [$\\,$(|escape(R)];
escape([$)|R]) -> [$\\,$)|escape(R)];
escape([$||R]) -> [$\\,$||escape(R)];
escape([$^|R]) -> [$\\,$^|escape(R)];
escape([$<|R]) -> [$\\,$<|escape(R)];
escape([$>|R]) -> [$\\,$>|escape(R)];
escape([$\n|R]) -> [$\\,$\n|escape(R)];
escape([$ |R]) -> [$\\,$ |escape(R)];
escape([$\t|R]) -> [$\\,$\t|escape(R)];
escape([C|R]) -> [C|escape(R)].
date_local() ->
{{Year,Month,Day},{Hour,Minute,Second}}=calendar:local_time(),
%% Time format hard-wired to: "%a %b %e %T %Y" according to strftime(3)
io_lib:format("~s ~s ~2w ~2.2.0w:~2.2.0w:~2.2.0w ~w",
[httpd_util:day(calendar:day_of_the_week(Year,Month,Day)),
httpd_util:month(Month),Day,Hour,Minute,Second,Year]).
date_gmt() ->
{{Year,Month,Day},{Hour,Minute,Second}}=calendar:universal_time(),
%% Time format hard-wired to: "%a %b %e %T %Z %Y" according to strftime(3)
io_lib:format("~s ~s ~2w ~2.2.0w:~2.2.0w:~2.2.0w GMT ~w",
[httpd_util:day(calendar:day_of_the_week(Year,Month,Day)),
httpd_util:month(Month),Day,Hour,Minute,Second,Year]).
last_modified(Data,ConfigDB,RequestURI) ->
{ok,FileInfo}=file:read_file_info(mod_alias:path(Data,ConfigDB,RequestURI)),
{{Year,Month,Day},{Hour,Minute,Second}}=FileInfo#file_info.mtime,
io_lib:format("~s ~s ~2w ~2.2.0w:~2.2.0w:~2.2.0w ~w",
[httpd_util:day(calendar:day_of_the_week(Year,Month,Day)),
httpd_util:month(Month),Day,Hour,Minute,Second,Year]).
%%
%% fsize directive
%%
fsize(Info,Context,ErrorLog,[virtual],[VirtualPath],R) ->
Aliases=httpd_util:multi_lookup(Info#mod.config_db,alias),
{_,Path,AfterPath}=
mod_alias:real_name(Info#mod.config_db,VirtualPath,Aliases),
fsize(Info, Context, ErrorLog, R, Path);
fsize(Info,Context,ErrorLog,[file],[FileName],R) ->
Path=file(Info#mod.config_db,Info#mod.request_uri,FileName),
fsize(Info,Context,ErrorLog,R,Path);
fsize(Info,Context,ErrorLog,TagList,ValueList,R) ->
{ok,Context,[{internal_info,?NICE("fsize directive has a spurious tag")}|
ErrorLog],httpd_util:key1search(Context,errmsg,""),R}.
fsize(Info,Context,ErrorLog,R,Path) ->
case file:read_file_info(Path) of
{ok,FileInfo} ->
case httpd_util:key1search(Context,sizefmt) of
"bytes" ->
{ok,Context,ErrorLog,
integer_to_list(FileInfo#file_info.size),R};
"abbrev" ->
Size = integer_to_list(trunc(FileInfo#file_info.size/1024+1))++"k",
{ok,Context,ErrorLog,Size,R};
Value->
{ok,Context,
[{internal_info,
?NICE("fsize directive has a spurious tag value ("++
Value++")")}|
ErrorLog],
httpd_util:key1search(Context, errmsg, ""), R}
end;
{error,Reason} ->
{ok,Context,[{internal_info,?NICE("Can't open "++Path)}|ErrorLog],
httpd_util:key1search(Context,errmsg,""),R}
end.
%%
%% flastmod directive
%%
flastmod(Info, Context, ErrorLog, [virtual], [VirtualPath],R) ->
Aliases=httpd_util:multi_lookup(Info#mod.config_db,alias),
{_,Path,AfterPath}=
mod_alias:real_name(Info#mod.config_db,VirtualPath,Aliases),
flastmod(Info,Context,ErrorLog,R,Path);
flastmod(Info, Context, ErrorLog, [file], [FileName], R) ->
Path = file(Info#mod.config_db, Info#mod.request_uri, FileName),
flastmod(Info, Context, ErrorLog, R, Path);
flastmod(Info,Context,ErrorLog,TagList,ValueList,R) ->
{ok,Context,[{internal_info,?NICE("flastmod directive has a spurious tag")}|
ErrorLog],httpd_util:key1search(Context,errmsg,""),R}.
flastmod(Info,Context,ErrorLog,R,File) ->
case file:read_file_info(File) of
{ok,FileInfo} ->
{{Yr,Mon,Day},{Hour,Minute,Second}}=FileInfo#file_info.mtime,
Result=
io_lib:format("~s ~s ~2w ~w:~w:~w ~w",
[httpd_util:day(
calendar:day_of_the_week(Yr,Mon, Day)),
httpd_util:month(Mon),Day,Hour,Minute,Second, Yr]),
{ok,Context,ErrorLog,Result,R};
{error,Reason} ->
{ok,Context,[{internal_info,?NICE("Can't open "++File)}|ErrorLog],
httpd_util:key1search(Context,errmsg,""),R}
end.
%%
%% exec directive
%%
exec(Info,Context,ErrorLog,[cmd],[Command],R) ->
?vtrace("exec cmd:~n Command: ~p",[Command]),
cmd(Info,Context,ErrorLog,R,Command);
exec(Info,Context,ErrorLog,[cgi],[RequestURI],R) ->
?vtrace("exec cgi:~n RequestURI: ~p",[RequestURI]),
cgi(Info,Context,ErrorLog,R,RequestURI);
exec(Info,Context,ErrorLog,TagList,ValueList,R) ->
?vtrace("exec with spurious tag:"
"~n TagList: ~p"
"~n ValueList: ~p",
[TagList,ValueList]),
{ok, Context,
[{internal_info,?NICE("exec directive has a spurious tag")}|
ErrorLog], httpd_util:key1search(Context,errmsg,""),R}.
%% cmd
cmd(Info, Context, ErrorLog, R, Command) ->
process_flag(trap_exit,true),
Env = env(Info),
Dir = filename:dirname(Command),
Port = (catch open_port({spawn,Command},[stream,{cd,Dir},{env,Env}])),
case Port of
P when port(P) ->
{NewErrorLog, Result} = proxy(Port, ErrorLog),
{ok, Context, NewErrorLog, Result, R};
{'EXIT', Reason} ->
?vlog("open port failed: exit"
"~n URI: ~p"
"~n Reason: ~p",
[Info#mod.request_uri,Reason]),
exit({open_port_failed,Reason,
[{uri,Info#mod.request_uri},{script,Command},
{env,Env},{dir,Dir}]});
O ->
?vlog("open port failed: unknown result"
"~n URI: ~p"
"~n O: ~p",
[Info#mod.request_uri,O]),
exit({open_port_failed,O,
[{uri,Info#mod.request_uri},{script,Command},
{env,Env},{dir,Dir}]})
end.
env(Info) ->
[{"DOCUMENT_NAME",document_name(Info#mod.data,Info#mod.config_db,
Info#mod.request_uri)},
{"DOCUMENT_URI", document_uri(Info#mod.config_db, Info#mod.request_uri)},
{"QUERY_STRING_UNESCAPED", query_string_unescaped(Info#mod.request_uri)},
{"DATE_LOCAL", date_local()},
{"DATE_GMT", date_gmt()},
{"LAST_MODIFIED", last_modified(Info#mod.data, Info#mod.config_db,
Info#mod.request_uri)}
].
%% cgi
cgi(Info, Context, ErrorLog, R, RequestURI) ->
ScriptAliases = httpd_util:multi_lookup(Info#mod.config_db, script_alias),
case mod_alias:real_script_name(Info#mod.config_db, RequestURI,
ScriptAliases) of
{Script, AfterScript} ->
exec_script(Info,Script,AfterScript,ErrorLog,Context,R);
not_a_script ->
{ok, Context,
[{internal_info, ?NICE(RequestURI++" is not a script")}|
ErrorLog], httpd_util:key1search(Context, errmsg, ""),R}
end.
remove_header([]) ->
[];
remove_header([$\n,$\n|Rest]) ->
Rest;
remove_header([C|Rest]) ->
remove_header(Rest).
exec_script(Info,Script,AfterScript,ErrorLog,Context,R) ->
process_flag(trap_exit,true),
Aliases = httpd_util:multi_lookup(Info#mod.config_db, alias),
{_, Path, AfterPath} = mod_alias:real_name(Info#mod.config_db,
Info#mod.request_uri,
Aliases),
Env = env(Info)++mod_cgi:env(Info, Path, AfterPath),
Dir = filename:dirname(Path),
Port = (catch open_port({spawn,Script},[stream,{env, Env},{cd, Dir}])),
case Port of
P when port(P) ->
%% Send entity body to port.
Res = case Info#mod.entity_body of
[] ->
true;
EntityBody ->
(catch port_command(Port,EntityBody))
end,
case Res of
{'EXIT', Reason} ->
?vlog("port send failed:"
"~n Port: ~p"
"~n URI: ~p"
"~n Reason: ~p",
[Port,Info#mod.request_uri,Reason]),
exit({open_cmd_failed,Reason,
[{mod,?MODULE},{port,Port},
{uri,Info#mod.request_uri},
{script,Script},{env,Env},{dir,Dir},
{ebody_size,sz(Info#mod.entity_body)}]});
true ->
{NewErrorLog, Result} = proxy(Port, ErrorLog),
{ok, Context, NewErrorLog, remove_header(Result), R}
end;
{'EXIT', Reason} ->
?vlog("open port failed: exit"
"~n URI: ~p"
"~n Reason: ~p",
[Info#mod.request_uri,Reason]),
exit({open_port_failed,Reason,
[{mod,?MODULE},{uri,Info#mod.request_uri},{script,Script},
{env,Env},{dir,Dir}]});
O ->
?vlog("open port failed: unknown result"
"~n URI: ~p"
"~n O: ~p",
[Info#mod.request_uri,O]),
exit({open_port_failed,O,
[{mod,?MODULE},{uri,Info#mod.request_uri},{script,Script},
{env,Env},{dir,Dir}]})
end.
%%
%% Port communication
%%
proxy(Port,ErrorLog) ->
process_flag(trap_exit, true),
proxy(Port, ErrorLog, []).
proxy(Port, ErrorLog, Result) ->
receive
{Port, {data, Response}} ->
proxy(Port, ErrorLog, lists:append(Result,Response));
{'EXIT', Port, normal} when port(Port) ->
process_flag(trap_exit, false),
{ErrorLog, Result};
{'EXIT', Port, Reason} when port(Port) ->
process_flag(trap_exit, false),
{[{internal_info,
?NICE("Scrambled output from CGI-script")}|ErrorLog],
Result};
{'EXIT', Pid, Reason} when pid(Pid) ->
process_flag(trap_exit, false),
{'EXIT', Pid, Reason};
%% This should not happen!
WhatEver ->
process_flag(trap_exit, false),
{ErrorLog, Result}
end.
%% ------
%% Temporary until I figure out a way to fix send_in_chunks
%% (comments and directives that start in one chunk but end
%% in another is not handled).
%%
send_in(Info, Path,Head, {ok,FileInfo}) ->
case file:read_file(Path) of
{ok, Bin} ->
send_in1(Info, binary_to_list(Bin), Head, FileInfo);
{error, Reason} ->
?vlog("failed reading file: ~p",[Reason]),
{error, {open,Reason}}
end;
send_in(Info,Path,Head,{error,Reason}) ->
?vlog("failed open file: ~p",[Reason]),
{error, {open,Reason}}.
send_in1(Info, Data,Head,FileInfo) ->
{ok, _Context, Err, ParsedBody} = parse(Info,Data,?DEFAULT_CONTEXT,[],[]),
Size = length(ParsedBody),
?vdebug("send_in1 -> Size: ~p",[Size]),
Head1 = case Info#mod.http_version of
"HTTP/1.1"->
Head ++
"Content-Length: " ++
integer_to_list(Size) ++
"\r\nEtag:" ++
httpd_util:create_etag(FileInfo,Size) ++"\r\n" ++
"Last-Modified: " ++
httpd_util:rfc1123_date(FileInfo#file_info.mtime) ++
"\r\n\r\n";
_->
%% i.e http/1.0 and http/0.9
Head ++
"Content-Length: " ++
integer_to_list(Size) ++
"\r\nLast-Modified: " ++
httpd_util:rfc1123_date(FileInfo#file_info.mtime) ++
"\r\n\r\n"
end,
httpd_socket:deliver(Info#mod.socket_type,Info#mod.socket,
[Head1,ParsedBody]),
{ok, Err, Size}.
%%
%% Addition to "Fuzzy" HTML parser. This is actually a ugly hack to
%% avoid putting to much data on the heap. To be rewritten...
%%
% -define(CHUNK_SIZE, 4096).
% send_in_chunks(Info, Path) ->
% ?DEBUG("send_in_chunks -> Path: ~p",[Path]),
% case file:open(Path, [read, raw]) of
% {ok, Stream} ->
% send_in_chunks(Info, Stream, ?DEFAULT_CONTEXT,[]);
% {error, Reason} ->
% ?ERROR("Failed open file: ~p",[Reason]),
% {error, {open,Reason}}
% end.
% send_in_chunks(Info, Stream, Context, ErrorLog) ->
% case file:read(Stream, ?CHUNK_SIZE) of
% {ok, Data} ->
% ?DEBUG("send_in_chunks -> read ~p bytes",[length(Data)]),
% {ok, NewContext, NewErrorLog, ParsedBody}=
% parse(Info, Data, Context, ErrorLog, []),
% httpd_socket:deliver(Info#mod.socket_type,
% Info#mod.socket, ParsedBody),
% send_in_chunks(Info,Stream,NewContext,NewErrorLog);
% eof ->
% {ok, ErrorLog};
% {error, Reason} ->
% ?ERROR("Failed read from file: ~p",[Reason]),
% {error, {read,Reason}}
% end.
%%
%% "Fuzzy" HTML parser
%%
parse(Info,Body) ->
parse(Info, Body, ?DEFAULT_CONTEXT, [], []).
parse(Info, [], Context, ErrorLog, Result) ->
{ok, Context, lists:reverse(ErrorLog), lists:reverse(Result)};
parse(Info,[$<,$!,$-,$-,$#|R1],Context,ErrorLog,Result) ->
?DEBUG("parse -> start command directive when length(R1): ~p",[length(R1)]),
case catch parse0(R1,Context) of
{parse_error,Reason} ->
parse(Info,R1,Context,[{internal_info,?NICE(Reason)}|ErrorLog],
[$#,$-,$-,$!,$<|Result]);
{ok,Context,Command,TagList,ValueList,R2} ->
?DEBUG("parse -> Command: ~p",[Command]),
{ok,NewContext,NewErrorLog,MoreResult,R3}=
handle(Info,Context,ErrorLog,Command,TagList,ValueList,R2),
parse(Info,R3,NewContext,NewErrorLog,lists:reverse(MoreResult)++Result)
end;
parse(Info,[$<,$!,$-,$-|R1],Context,ErrorLog,Result) ->
?DEBUG("parse -> start comment when length(R1) = ~p",[length(R1)]),
case catch parse5(R1,[],0) of
{parse_error,Reason} ->
?ERROR("parse -> parse error: ~p",[Reason]),
parse(Info,R1,Context,[{internal_info,?NICE(Reason)}|ErrorLog],Result);
{Comment,R2} ->
?DEBUG("parse -> length(Comment) = ~p, length(R2) = ~p",
[length(Comment),length(R2)]),
parse(Info,R2,Context,ErrorLog,Comment++Result)
end;
parse(Info,[C|R],Context,ErrorLog,Result) ->
parse(Info,R,Context,ErrorLog,[C|Result]).
handle(Info,Context,ErrorLog,Command,TagList,ValueList,R) ->
case catch apply(?MODULE,Command,[Info,Context,ErrorLog,TagList,ValueList,
R]) of
{'EXIT',{undef,_}} ->
throw({parse_error,"Unknown command "++atom_to_list(Command)++
" in parsed doc"});
Result ->
Result
end.
parse0([],Context) ->
throw({parse_error,"Premature EOF in parsed file"});
parse0([$-,$-,$>|R],Context) ->
throw({parse_error,"Premature EOF in parsed file"});
parse0([$ |R],Context) ->
parse0(R,Context);
parse0(String,Context) ->
parse1(String,Context,"").
parse1([],Context,Command) ->
throw({parse_error,"Premature EOF in parsed file"});
parse1([$-,$-,$>|R],Context,Command) ->
throw({parse_error,"Premature EOF in parsed file"});
parse1([$ |R],Context,Command) ->
parse2(R,Context,list_to_atom(lists:reverse(Command)),[],[],"");
parse1([C|R],Context,Command) ->
parse1(R,Context,[C|Command]).
parse2([],Context,Command,TagList,ValueList,Tag) ->
throw({parse_error,"Premature EOF in parsed file"});
parse2([$-,$-,$>|R],Context,Command,TagList,ValueList,Tag) ->
{ok,Context,Command,TagList,ValueList,R};
parse2([$ |R],Context,Command,TagList,ValueList,Tag) ->
parse2(R,Context,Command,TagList,ValueList,Tag);
parse2([$=|R],Context,Command,TagList,ValueList,Tag) ->
parse3(R,Context,Command,[list_to_atom(lists:reverse(Tag))|TagList],
ValueList);
parse2([C|R],Context,Command,TagList,ValueList,Tag) ->
parse2(R,Context,Command,TagList,ValueList,[C|Tag]).
parse3([],Context,Command,TagList,ValueList) ->
throw({parse_error,"Premature EOF in parsed file"});
parse3([$-,$-,$>|R],Context,Command,TagList,ValueList) ->
throw({parse_error,"Premature EOF in parsed file"});
parse3([$ |R],Context,Command,TagList,ValueList) ->
parse3(R,Context,Command,TagList,ValueList);
parse3([$"|R],Context,Command,TagList,ValueList) ->
parse4(R,Context,Command,TagList,ValueList,"");
parse3(String,Context,Command,TagList,ValueList) ->
throw({parse_error,"Premature EOF in parsed file"}).
parse4([],Context,Command,TagList,ValueList,Value) ->
throw({parse_error,"Premature EOF in parsed file"});
parse4([$-,$-,$>|R],Context,Command,TagList,ValueList,Value) ->
throw({parse_error,"Premature EOF in parsed file"});
parse4([$"|R],Context,Command,TagList,ValueList,Value) ->
parse2(R,Context,Command,TagList,[lists:reverse(Value)|ValueList],"");
parse4([C|R],Context,Command,TagList,ValueList,Value) ->
parse4(R,Context,Command,TagList,ValueList,[C|Value]).
parse5([],Comment,Depth) ->
?ERROR("parse5 -> unterminated comment of ~p bytes when Depth = ~p",
[length(Comment),Depth]),
throw({parse_error,"Premature EOF in parsed file"});
parse5([$<,$!,$-,$-|R],Comment,Depth) ->
parse5(R,[$-,$-,$!,$<|Comment],Depth+1);
parse5([$-,$-,$>|R],Comment,0) ->
{">--"++Comment++"--!<",R};
parse5([$-,$-,$>|R],Comment,Depth) ->
parse5(R,[$>,$-,$-|Comment],Depth-1);
parse5([C|R],Comment,Depth) ->
parse5(R,[C|Comment],Depth).
sz(B) when binary(B) -> {binary,size(B)};
sz(L) when list(L) -> {list,length(L)};
sz(_) -> undefined.
%% send_error - Handle failure to send the file
%%
send_error({open,Reason},Info,Path) -> open_error(Reason,Info,Path);
send_error({read,Reason},Info,Path) -> read_error(Reason,Info,Path).
%% open_error - Handle file open failure
%%
open_error(eacces,Info,Path) ->
open_error(403,Info,Path,"");
open_error(enoent,Info,Path) ->
open_error(404,Info,Path,"");
open_error(enotdir,Info,Path) ->
open_error(404,Info,Path,
": A component of the file name is not a directory");
open_error(emfile,_Info,Path) ->
open_error(500,none,Path,": To many open files");
open_error({enfile,_},_Info,Path) ->
open_error(500,none,Path,": File table overflow");
open_error(_Reason,_Info,Path) ->
open_error(500,none,Path,"").
open_error(StatusCode,none,Path,Reason) ->
{StatusCode,none,?NICE("Can't open "++Path++Reason)};
open_error(StatusCode,Info,Path,Reason) ->
{StatusCode,Info#mod.request_uri,?NICE("Can't open "++Path++Reason)}.
read_error(_Reason,_Info,Path) ->
read_error(500,none,Path,"").
read_error(StatusCode,none,Path,Reason) ->
{StatusCode,none,?NICE("Can't read "++Path++Reason)};
read_error(StatusCode,Info,Path,Reason) ->
{StatusCode,Info#mod.request_uri,?NICE("Can't read "++Path++Reason)}.
