diff options
Diffstat (limited to 'ext/http11/http11_parser_common.rl')
-rw-r--r-- | ext/http11/http11_parser_common.rl | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/ext/http11/http11_parser_common.rl b/ext/http11/http11_parser_common.rl new file mode 100644 index 0000000..7f41ddc --- /dev/null +++ b/ext/http11/http11_parser_common.rl @@ -0,0 +1,103 @@ +%%{ + machine http_parser; + + action mark {MARK(mark, fpc); } + + + action start_field { MARK(field_start, fpc); } + action write_field { + parser->field_len = LEN(field_start, fpc); + } + + action start_value { MARK(mark, fpc); } + action write_value { + if(parser->http_field != NULL) { + parser->http_field(parser->data, PTR_TO(field_start), parser->field_len, PTR_TO(mark), LEN(mark, fpc)); + } + } + action request_method { + if(parser->request_method != NULL) + parser->request_method(parser->data, PTR_TO(mark), LEN(mark, fpc)); + } + action request_uri { + if(parser->request_uri != NULL) + parser->request_uri(parser->data, PTR_TO(mark), LEN(mark, fpc)); + } + action fragment { + if(parser->fragment != NULL) + parser->fragment(parser->data, PTR_TO(mark), LEN(mark, fpc)); + } + + action start_query {MARK(query_start, fpc); } + action query_string { + if(parser->query_string != NULL) + parser->query_string(parser->data, PTR_TO(query_start), LEN(query_start, fpc)); + } + + action http_version { + if(parser->http_version != NULL) + parser->http_version(parser->data, PTR_TO(mark), LEN(mark, fpc)); + } + + action request_path { + if(parser->request_path != NULL) + parser->request_path(parser->data, PTR_TO(mark), LEN(mark,fpc)); + } + + action done { + parser->body_start = fpc - buffer + 1; + if(parser->header_done != NULL) + parser->header_done(parser->data, fpc + 1, pe - fpc - 1); + fbreak; + } + + +#### HTTP PROTOCOL GRAMMAR +# line endings + CRLF = "\r\n"; + +# character types + CTL = (cntrl | 127); + safe = ("$" | "-" | "_" | "."); + extra = ("!" | "*" | "'" | "(" | ")" | ","); + reserved = (";" | "/" | "?" | ":" | "@" | "&" | "=" | "+"); + unsafe = (CTL | " " | "\"" | "#" | "%" | "<" | ">"); + national = any -- (alpha | digit | reserved | extra | safe | unsafe); + unreserved = (alpha | digit | safe | extra | national); + escape = ("%" xdigit xdigit); + uchar = (unreserved | escape); + pchar = (uchar | ":" | "@" | "&" | "=" | "+"); + tspecials = ("(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\\" | "\"" | "/" | "[" | "]" | "?" | "=" | "{" | "}" | " " | "\t"); + +# elements + token = (ascii -- (CTL | tspecials)); + +# URI schemes and absolute paths + scheme = ( alpha | digit | "+" | "-" | "." )* ; + absolute_uri = (scheme ":" (uchar | reserved )*); + + path = ( pchar+ ( "/" pchar* )* ) ; + query = ( uchar | reserved )* %query_string ; + param = ( pchar | "/" )* ; + params = ( param ( ";" param )* ) ; + rel_path = ( path? %request_path (";" params)? ) ("?" %start_query query)?; + absolute_path = ( "/"+ rel_path ); + + Request_URI = ( "*" | absolute_uri | absolute_path ) >mark %request_uri; + Fragment = ( uchar | reserved )* >mark %fragment; + Method = ( upper | digit | safe ){1,20} >mark %request_method; + + http_number = ( digit+ "." digit+ ) ; + HTTP_Version = ( "HTTP/" http_number ) >mark %http_version ; + Request_Line = ( Method " " Request_URI ("#" Fragment){0,1} " " HTTP_Version CRLF ) ; + + field_name = ( token -- ":" )+ >start_field %write_field; + + field_value = any* >start_value %write_value; + + message_header = field_name ":" " "* field_value :> CRLF; + + Request = Request_Line ( message_header )* ( CRLF @done ); + +main := Request; +}%% |