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HttpParser.java
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HttpParser.java
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// Copyright (c) 2014-present Tom Zhou<appnet.link@gmail.com>
package com.iwebpp.node;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import com.iwebpp.SimpleDebug;
public abstract class HttpParser extends SimpleDebug {
private final static String TAG = "HttpParser";
protected HttpParser(http_parser_type type, Object data) {
this.data = data;
reset(type);
}
@SuppressWarnings("unused")
private HttpParser() {this.data = null;}
public static enum http_parser_type {
HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH;
}
private enum State {
s_unknown (0)
, s_dead (1) /* important that this is > 0 */
, s_start_req_or_res (2)
, s_res_or_resp_H (3)
, s_start_res (4)
, s_res_H (5)
, s_res_HT (6)
, s_res_HTT (7)
, s_res_HTTP (8)
, s_res_first_http_major (9)
, s_res_http_major (10)
, s_res_first_http_minor (11)
, s_res_http_minor (12)
, s_res_first_status_code (13)
, s_res_status_code (14)
, s_res_status_start (15)
, s_res_status (16)
, s_res_line_almost_done (17)
, s_start_req (18)
, s_req_method (19)
, s_req_spaces_before_url (20)
, s_req_schema (21)
, s_req_schema_slash (22)
, s_req_schema_slash_slash (23)
, s_req_server_start (24)
, s_req_server (25)
, s_req_server_with_at (26)
, s_req_path (27)
, s_req_query_string_start (28)
, s_req_query_string (29)
, s_req_fragment_start (30)
, s_req_fragment (31)
, s_req_http_start (32)
, s_req_http_H (33)
, s_req_http_HT (34)
, s_req_http_HTT (35)
, s_req_http_HTTP (36)
, s_req_first_http_major (37)
, s_req_http_major (38)
, s_req_first_http_minor (39)
, s_req_http_minor (40)
, s_req_line_almost_done (41)
, s_header_field_start (42)
, s_header_field (43)
, s_header_value_discard_ws (44)
, s_header_value_discard_ws_almost_done (45)
, s_header_value_discard_lws (46)
, s_header_value_start (47)
, s_header_value (48)
, s_header_value_lws (49)
, s_header_almost_done (50)
, s_chunk_size_start (51)
, s_chunk_size (52)
, s_chunk_parameters (53)
, s_chunk_size_almost_done (54)
, s_headers_almost_done (55)
, s_headers_done (56)
/* Important: 's_headers_done' must be the last 'header' State. All
* states beyond this must be 'body' states. It is used for overflow
* checking. See the PARSING_HEADER() macro.
*/
, s_chunk_data (57)
, s_chunk_data_almost_done (58)
, s_chunk_data_done (59)
, s_body_identity (60)
, s_body_identity_eof (61)
, s_message_done (62);
private final int state;
private State(int state) {
this.state = state;
}
}
private enum header_states {
h_general (0)
, h_C (1)
, h_CO (2)
, h_CON (3)
, h_matching_connection (4)
, h_matching_proxy_connection (5)
, h_matching_content_length (6)
, h_matching_transfer_encoding (7)
, h_matching_upgrade (8)
, h_connection (9)
, h_content_length (10)
, h_transfer_encoding (11)
, h_upgrade (12)
, h_matching_transfer_encoding_chunked (13)
, h_matching_connection_keep_alive (14)
, h_matching_connection_close (15)
, h_transfer_encoding_chunked (16)
, h_connection_keep_alive (17)
, h_connection_close (18);
private header_states(int state){ }
};
private enum http_host_state {
s_http_host_dead (1)
, s_http_userinfo_start (2)
, s_http_userinfo (3)
, s_http_host_start (4)
, s_http_host_v6_start (5)
, s_http_host (6)
, s_http_host_v6 (7)
, s_http_host_v6_end (8)
, s_http_host_port_start (9)
, s_http_host_port (10);
private http_host_state(int state){ }
}
/* Request Methods */
public static enum http_method {
HTTP_DELETE ("DELETE\0"),
HTTP_GET ("GET\0"),
HTTP_HEAD ("HEAD\0"),
HTTP_POST ("POST\0"),
HTTP_PUT ("PUT\0"),
/* pathological */
HTTP_CONNECT ("CONNECT\0"),
HTTP_OPTIONS ("OPTIONS\0"),
HTTP_TRACE ("TRACE\0"),
/* webdav */
HTTP_COPY ("COPY\0"),
HTTP_LOCK ("LOCK\0"),
HTTP_MKCOL ("MKCOL\0"),
HTTP_MOVE ("MOVE\0"),
HTTP_PROPFIND ("PROPFIND\0"),
HTTP_PROPPATCH ("PROPPATCH\0"),
HTTP_SEARCH ("SEARCH\0"),
HTTP_UNLOCK ("UNLOCK\0"),
/* subversion */
HTTP_REPORT ("REPORT\0"),
HTTP_MKACTIVITY ("MKACTIVITY\0"),
HTTP_CHECKOUT ("CHECKOUT\0"),
HTTP_MERGE ("MERGE\0"),
/* upnp */
HTTP_MSEARCH ("M-SEARCH\0"),
HTTP_NOTIFY ("NOTIFY\0"),
HTTP_SUBSCRIBE ("SUBSCRIBE\0"),
HTTP_UNSUBSCRIBE ("UNSUBSCRIBE\0"),
/* RFC-5789 */
HTTP_PATCH ("PATCH\0"),
HTTP_PURGE ("PURGE\0"),
// invalid
HTTP_INVALID ("INVALID\0");
private final String desc;
private http_method(String desc) {
this.desc = desc;
}
public String desc() {
return desc.substring(0, desc.length()-1);
}
}
/* Define HPE_* values for each errno value above */
public static enum http_errno {
/* No error */
///XX(OK, "success")
HPE_OK("success"),
/* Callback-related errors */
///XX(CB_message_begin, "the on_message_begin callback failed")
///XX(CB_url, "the on_url callback failed")
///XX(CB_header_field, "the on_header_field callback failed")
///XX(CB_header_value, "the on_header_value callback failed")
///XX(CB_headers_complete, "the on_headers_complete callback failed")
///XX(CB_body, "the on_body callback failed")
///XX(CB_message_complete, "the on_message_complete callback failed")
///XX(CB_status, "the on_status callback failed")
HPE_CB_message_begin("the on_message_begin callback failed"),
HPE_CB_url("the on_url callback failed"),
HPE_CB_header_field("the on_header_field callback failed" ),
HPE_CB_header_value("the on_header_value callback failed"),
HPE_CB_headers_complete("the on_headers_complete callback failed"),
HPE_CB_body("the on_body callback failed"),
HPE_CB_message_complete("the on_message_complete callback failed"),
HPE_CB_status("the on_status callback failed"),
/* Parsing-related errors */
///XX(INVALID_EOF_STATE, "stream ended at an unexpected time")
///XX(HEADER_OVERFLOW,
/// "too many header bytes seen; overflow detected")
///XX(CLOSED_CONNECTION,
/// "data received after completed connection: close message")
///XX(INVALID_VERSION, "invalid http version")
///XX(INVALID_STATUS, "invalid http status code")
///XX(INVALID_METHOD, "invalid http method")
///XX(INVALID_URL, "invalid URL")
HPE_INVALID_EOF_STATE("stream ended at an unexpected time"),
HPE_HEADER_OVERFLOW("too many header bytes seen; overflow detected"),
HPE_CLOSED_CONNECTION("data received after completed connection: close message"),
HPE_INVALID_VERSION("invalid http version"),
HPE_INVALID_STATUS("invalid http status code"),
HPE_INVALID_METHOD("invalid http method"),
HPE_INVALID_URL("invalid URL"),
///XX(INVALID_HOST, "invalid host")
///XX(INVALID_PORT, "invalid port")
///XX(INVALID_PATH, "invalid path")
///XX(INVALID_QUERY_STRING, "invalid query string")
///XX(INVALID_FRAGMENT, "invalid fragment")
///XX(LF_EXPECTED, "LF character expected")
///XX(INVALID_HEADER_TOKEN, "invalid character in header")
///XX(INVALID_CONTENT_LENGTH,
/// "invalid character in content-length header")
///XX(INVALID_CHUNK_SIZE,
/// "invalid character in chunk size header")
///XX(INVALID_CONSTANT, "invalid constant string")
///XX(INVALID_INTERNAL_STATE, "encountered unexpected internal State")
///XX(STRICT, "strict mode assertion failed")
///XX(PAUSED, "parser is paused")
///XX(MAYBE, "an unknown error occurred")
HPE_INVALID_HOST("invalid host"),
HPE_INVALID_PORT("invalid port"),
HPE_INVALID_PATH("invalid path"),
HPE_INVALID_QUERY_STRING("invalid query string"),
HPE_INVALID_FRAGMENT("invalid fragment"),
HPE_LF_EXPECTED("LF character expected"),
HPE_INVALID_HEADER_TOKEN("invalid character in header"),
HPE_INVALID_CONTENT_LENGTH("invalid character in content-length header"),
HPE_INVALID_CHUNK_SIZE("invalid character in chunk size header"),
HPE_INVALID_CONSTANT("invalid constant string"),
HPE_INVALID_INTERNAL_STATE("encountered unexpected internal State"),
HPE_STRICT("strict mode assertion failed"),
HPE_PAUSED("parser is paused"),
HPE_UNKNOWN("an unknown error occurred");
private final String desc;
private http_errno(String desc) {
this.desc = desc;
}
public String desc() {
return this.desc;
}
}
/* Get an http_errno value from an http_parser */
protected http_errno HTTP_PARSER_ERRNO() {
return this.http_errno;
}
/* Flag values for http_parser.flags field */
private enum Flags {
F_CHUNKED (1 << 0),
F_CONNECTION_KEEP_ALIVE (1 << 1),
F_CONNECTION_CLOSE (1 << 2),
F_TRAILING (1 << 3),
F_UPGRADE (1 << 4),
F_SKIPBODY (1 << 5);
private final int flag;
private Flags(int flag) {
this.flag= flag;
}
}
private enum http_parser_url_fields {
UF_SCHEMA (0),
UF_HOST (1),
UF_PORT (2),
UF_PATH (3),
UF_QUERY (4),
UF_FRAGMENT (5),
UF_USERINFO (6),
UF_MAX (7);
private final int field;
private http_parser_url_fields(int field) {
this.field = field;
}
}
private final static String PROXY_CONNECTION = "proxy-connection\0";
private final static String CONNECTION = "connection\0";
private final static String CONTENT_LENGTH = "content-length\0";
private final static String TRANSFER_ENCODING = "transfer-encoding\0";
private final static String UPGRADE = "upgrade\0";
private final static String CHUNKED = "chunked\0";
private final static String KEEP_ALIVE = "keep-alive\0";
private final static String CLOSE = "close\0";
private static long ULLONG_MAX() {
return Long.MAX_VALUE;
}
private static long MIN(long a, long b) {
return ((a) < (b) ? (a) : (b));
}
private static boolean BIT_AT(int [] a, int i) {
i &= 0xff;
return (0 != (a[i >> 3] &
(1 << (i & 7))));
}
private void SET_ERRNO(http_errno e) {
this.http_errno = e;
}
/* Tokens as defined by rfc 2616. Also lowercases them.
* token = 1*<any CHAR except CTLs or separators>
* separators = "(" | ")" | "<" | ">" | "@"
* | "," | ";" | ":" | "\" | <">
* | "/" | "[" | "]" | "?" | "="
* | "{" | "}" | SP | HT
*/
private final static char tokens[] = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
0, 0, 0, 0, 0, 0, 0, 0,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
0, 0, 0, 0, 0, 0, 0, 0,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
0, 0, 0, 0, 0, 0, 0, 0,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
0, 0, 0, 0, 0, 0, 0, 0,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
0, '!', 0, '#', '$', '%', '&', '\'',
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
0, 0, '*', '+', 0, '-', '.', 0,
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
'0', '1', '2', '3', '4', '5', '6', '7',
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
'8', '9', 0, 0, 0, 0, 0, 0,
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
'x', 'y', 'z', 0, 0, 0, '^', '_',
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
'x', 'y', 'z', 0, '|', 0, '~', 0
};
private final static char ASCII[] = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
0, 0, 0, 0, 0, 0, 0, 0,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
0, '\t', '\n', 0, '\f', '\r', 0, 0,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
0, 0, 0, 0, 0, 0, 0, 0,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
0, 0, 0, 0, 0, 0, 0, 0,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
' ', '!', '"', '#', '$', '%', '&', '\'',
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
'(', ')', '*', '+', ',', '-', '.', '/',
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
'0', '1', '2', '3', '4', '5', '6', '7',
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
'8', '9', ':', ';', '<', '=', '>', '?',
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
'x', 'y', 'z', '{', '|', '}', '~', 0
};
private final static byte unhex[] = {
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1
,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
};
// strict parse mode
private final static int normal_url_char[] = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
0 | 2 | 4 | 0 | 16 | 32 | 64 | 128,
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 0,
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 0,
};
private boolean PARSING_HEADER() {
return (this.state.state <= State.s_headers_done.state);
}
/* Does the parser need to see an EOF to find the end of the message? */
private boolean http_message_needs_eof () {
if (type == http_parser_type.HTTP_REQUEST) {
return false;
}
/* See RFC 2616 section 4.4 */
if (status_code / 100 == 1 || /* 1xx e.g. Continue */
status_code == 204 || /* No Content */
status_code == 304 || /* Not Modified */
(flags & Flags.F_SKIPBODY.flag)!=0) { /* response to a HEAD request */
return false;
}
if ((flags & Flags.F_CHUNKED.flag)!=0 || content_length != ULLONG_MAX()) {
return false;
}
return true;
}
/* Macros for character classes; depends on strict-mode */
/*#define CR '\r'
#define LF '\n'
#define LOWER(c) (unsigned char)(c | 0x20)
#define IS_ALPHA(c) (LOWER(c) >= 'a' && LOWER(c) <= 'z')
#define IS_NUM(c) ((c) >= '0' && (c) <= '9')
#define IS_ALPHANUM(c) (IS_ALPHA(c) || IS_NUM(c))
#define IS_HEX(c) (IS_NUM(c) || (LOWER(c) >= 'a' && LOWER(c) <= 'f'))
#define IS_MARK(c) ((c) == '-' || (c) == '_' || (c) == '.' || \
(c) == '!' || (c) == '~' || (c) == '*' || (c) == '\'' || (c) == '(' || \
(c) == ')')
#define IS_USERINFO_CHAR(c) (IS_ALPHANUM(c) || IS_MARK(c) || (c) == '%' || \
(c) == ';' || (c) == ':' || (c) == '&' || (c) == '=' || (c) == '+' || \
(c) == '$' || (c) == ',')
#if HTTP_PARSER_STRICT
#define TOKEN(c) (tokens[(unsigned char)c])
#define IS_URL_CHAR(c) (BIT_AT(normal_url_char, (unsigned char)c))
#define IS_HOST_CHAR(c) (IS_ALPHANUM(c) || (c) == '.' || (c) == '-')
#else
#define TOKEN(c) ((c == ' ') ? ' ' : tokens[(unsigned char)c])
#define IS_URL_CHAR(c) \
(BIT_AT(normal_url_char, (unsigned char)c) || ((c) & 0x80))
#define IS_HOST_CHAR(c) \
(IS_ALPHANUM(c) || (c) == '.' || (c) == '-' || (c) == '_')
#endif
#define start_state (type == HTTP_REQUEST ? s_start_req : s_start_res)
*/
private static char LOWER(char c) {
return Character.toLowerCase(c);
}
private static boolean IS_ALPHA(char c) {
boolean yes = (LOWER(c) >= 'a' && LOWER(c) <= 'z');
if (!yes) debug(TAG, "\n\n\nNot alpha: "+c);
return yes;
}
private static boolean IS_NUM(char c) {
boolean yes = ((c) >= '0' && (c) <= '9');
if (!yes) debug(TAG, "\n\n\nNot num: "+c);
return yes;
}
private static boolean IS_ALPHANUM(char c) {
return (IS_ALPHA(c) || IS_NUM(c));
}
private static boolean IS_HEX(char c) {
boolean yes = (IS_NUM(c) || (LOWER(c) >= 'a' && LOWER(c) <= 'f'));
if (!yes) debug(TAG, "\n\n\nNot HEX: "+c);
return yes;
}
private static boolean IS_MARK(char c) {
return ((c) == '-' || (c) == '_' || (c) == '.' ||
(c) == '!' || (c) == '~' || (c) == '*' ||
(c) == '\'' || (c) == '(' || (c) == ')');
}
private static boolean IS_USERINFO_CHAR(char c) {
return (IS_ALPHANUM(c) || IS_MARK(c) ||
(c) == '%' || (c) == ';' || (c) == ':' ||
(c) == '&' || (c) == '=' || (c) == '+' ||
(c) == '$' || (c) == ',');
}
private static char TOKEN(int uc) {
uc &= 0xff;
debug(TAG, "TOKEN uc: "+uc);
return (tokens[uc]);
}
private static boolean IS_URL_CHAR(char c)
throws UnsupportedEncodingException {
// convert to ASICII / UTF-8 char
String cstr = "" + c;
int uc = cstr.getBytes("utf-8")[0] & 0xff;
debug(TAG, "IS_URL_CHAR cstr: "+cstr+", uc: "+uc);
return (BIT_AT(normal_url_char, uc));
}
private static boolean IS_HOST_CHAR(char c) {
return (IS_ALPHANUM(c) || (c) == '.' || (c) == '-');
}
private State start_state() {
return (type == http_parser_type.HTTP_REQUEST ? State.s_start_req : State.s_start_res);
}
private State NEW_MESSAGE() {
return http_should_keep_alive() ? start_state() : State.s_dead;
}
/* Our URL parser.
*
* This is designed to be shared by http_parser_execute() for URL validation,
* hence it has a State transition + byte-for-byte interface. In addition, it
* is meant to be embedded in http_parser_parse_url(), which does the dirty
* work of turning State transitions URL components for its API.
*
* This function should only be invoked with non-space characters. It is
* assumed that the caller cares about (and can detect) the transition between
* URL and non-URL states by looking for these.
*/
private static State parse_url_char(State s, final char ch)
throws UnsupportedEncodingException
{
if (ch == ' ' || ch == '\r' || ch == '\n') {
return State.s_dead;
}
///#if HTTP_PARSER_STRICT
if (ch == '\t' || ch == '\f') {
return State.s_dead;
}
///#endif
switch (s) {
case s_req_spaces_before_url:
/* Proxied requests are followed by scheme of an absolute URI (alpha).
* All methods except CONNECT are followed by '/' or '*'.
*/
if (ch == '/' || ch == '*') {
return State.s_req_path;
}
if (IS_ALPHA(ch)) {
return State.s_req_schema;
}
break;
case s_req_schema:
if (IS_ALPHA(ch)) {
return s;
}
if (ch == ':') {
return State.s_req_schema_slash;
}
break;
case s_req_schema_slash:
if (ch == '/') {
return State.s_req_schema_slash_slash;
}
break;
case s_req_schema_slash_slash:
if (ch == '/') {
return State.s_req_server_start;
}
break;
case s_req_server_with_at:
if (ch == '@') {
return State.s_dead;
}
/* FALLTHROUGH */
case s_req_server_start:
case s_req_server:
if (ch == '/') {
return State.s_req_path;
}
if (ch == '?') {
return State.s_req_query_string_start;
}
if (ch == '@') {
return State.s_req_server_with_at;
}
if (IS_USERINFO_CHAR(ch) || ch == '[' || ch == ']') {
return State.s_req_server;
}
break;
case s_req_path:
if (IS_URL_CHAR(ch)) {
return s;
}
switch (ch) {
case '?':
return State.s_req_query_string_start;
case '#':
return State.s_req_fragment_start;
}
break;
case s_req_query_string_start:
case s_req_query_string:
if (IS_URL_CHAR(ch)) {
return State.s_req_query_string;
}
switch (ch) {
case '?':
/* allow extra '?' in query string */
return State.s_req_query_string;
case '#':
return State.s_req_fragment_start;
}
break;
case s_req_fragment_start:
if (IS_URL_CHAR(ch)) {
return State.s_req_fragment;
}
switch (ch) {
case '?':
return State.s_req_fragment;
case '#':
return s;
}
break;
case s_req_fragment:
if (IS_URL_CHAR(ch)) {
return s;
}
switch (ch) {
case '?':
case '#':
return s;
}
break;
default:
break;
}
/* We should never fall out of the switch above unless there's an error */
return State.s_dead;
}
/* Result structure for http_parser_parse_url().
*
* Callers should index into field_data[] with UF_* values if field_set
* has the relevant (1 << UF_*) bit set. As a courtesy to clients (and
* because we probably have padding left over), we convert any port to
* a uint16_t.
*/
protected static class http_parser_url {
protected int field_set; /* Bitmask of (1 << UF_*) values */
protected int port; /* Converted UF_PORT string */
protected class field_data_t {
int off; /* Offset into buffer in which field starts */
int len; /* Length of run in buffer */
}
protected field_data_t field_data[];
protected http_parser_url() {
field_data = new field_data_t[http_parser_url_fields.UF_MAX.field];
}
}
/*
*
struct http_parser_settings {
http_cb on_message_begin;
http_data_cb on_url;
http_data_cb on_status;
http_data_cb on_header_field;
http_data_cb on_header_value;
http_cb on_headers_complete;
http_data_cb on_body;
http_cb on_message_complete;
};
* */
protected abstract int on_message_begin() throws Exception;
protected abstract int on_url(ByteBuffer url) throws Exception;
protected abstract int on_status(ByteBuffer status) throws Exception;
protected abstract int on_header_field(ByteBuffer field) throws Exception;
protected abstract int on_header_value(ByteBuffer vaule) throws Exception;
protected abstract int on_headers_complete() throws Exception;
protected abstract int on_body(ByteBuffer body) throws Exception;
protected abstract int on_message_complete() throws Exception;
/* Returns the library version. Bits 16-23 contain the major version number,
* bits 8-15 the minor version number and bits 0-7 the patch level.
* Usage example:
*
* unsigned long version = http_parser_version();
* unsigned major = (version >> 16) & 255;
* unsigned minor = (version >> 8) & 255;
* unsigned patch = version & 255;
* printf("http_parser v%u.%u.%u\n", major, minor, version);
*/
private final static long HTTP_PARSER_VERSION_MAJOR = 2;
private final static long HTTP_PARSER_VERSION_MINOR = 3;
private final static long HTTP_PARSER_VERSION_PATCH = 0;
public long version() {
return HTTP_PARSER_VERSION_MAJOR * 0x10000 |
HTTP_PARSER_VERSION_MINOR * 0x00100 |
HTTP_PARSER_VERSION_PATCH * 0x00001;
}
/* Maximium header size allowed */
private final static int HTTP_MAX_HEADER_SIZE = (80*1024);
///void http_parser_init(http_parser *parser, enum http_parser_type type);
@SuppressWarnings("static-access")
public void reset(http_parser_type type) {
this.type = type;
this.http_errno = http_errno.HPE_OK;
this.state = (type == http_parser_type.HTTP_REQUEST ? State.s_start_req :
(type == http_parser_type.HTTP_RESPONSE ? State.s_start_res : State.s_start_req_or_res));
// zero fields
this.content_length = 0;
this.flags = 0;
this.http_major = this.http_minor = 0;
this.index = 0;
this.nread = 0;
this.status_code = 0;
this.upgrade = false;
this.header_state = header_state.h_general;
this.method = http_method.HTTP_INVALID;
}
@SuppressWarnings("static-access")
public int execute(ByteBuffer data) throws Exception {
char c, ch;
int uc;
/*int8_t unhex_val;
const char *p = data;
const char *header_field_mark = 0;
const char *header_value_mark = 0;
const char *url_mark = 0;
const char *body_mark = 0;
const char *status_mark = 0;
*/
byte unhex_val;
int p = 0;
int header_field_mark = -1;
int header_value_mark = -1;
int url_mark = -1;
int body_mark = -1;
int status_mark = -1;
int len = (data == null) ? 0 : data.capacity();
int reexecute_byte = 0;
debug(TAG, "http_parser_execute .");
/* We're in an error state. Don't bother doing anything. */
if (HTTP_PARSER_ERRNO() != http_errno.HPE_OK) {
return 0;
}
debug(TAG, "http_parser_execute ..");
if (len == 0) {
switch (state) {
case s_body_identity_eof:
/* Use of CALLBACK_NOTIFY() here would erroneously return 1 byte read if
* we got paused.
*/
///CALLBACK_NOTIFY_NOADVANCE(message_complete);
{
assert(HTTP_PARSER_ERRNO() == http_errno.HPE_OK);
///if (settings->on_##FOR)
{
if (0 != on_message_complete()) {
SET_ERRNO(http_errno.HPE_CB_message_complete);
}
/* We either errored above or got paused; get out */
if (HTTP_PARSER_ERRNO() != http_errno.HPE_OK) {
///return (ER);
return (p);
}
}
}
return 0;
case s_dead:
case s_start_req_or_res:
case s_start_res:
case s_start_req:
return 0;
default:
SET_ERRNO(http_errno.HPE_INVALID_EOF_STATE);
return 1;
}
}
if (state == State.s_header_field)
header_field_mark = 0;///data;
if (state == State.s_header_value)
header_value_mark = 0;///data;
switch (state) {
case s_req_path:
case s_req_schema:
case s_req_schema_slash:
case s_req_schema_slash_slash:
case s_req_server_start:
case s_req_server:
case s_req_server_with_at:
case s_req_query_string_start:
case s_req_query_string:
case s_req_fragment_start:
case s_req_fragment:
url_mark = 0;///data;
break;
case s_res_status:
status_mark = 0;///data;
break;
default:
break;
}
debug(TAG, "http_parser_execute ... state:"+state.state);
///for (p=data; p != data + len; p++) {
for (p = 0; p < len; p ++) {
///ch = *p;
uc = data.get(p) & 0xff;
ch = ASCII[uc];
debug(TAG, "uc: "+uc+", ch: "+ch);
///if (PARSING_HEADER(state)) {
if (PARSING_HEADER()) {
debug(TAG, "PARSING_HEADER");
///++nread;
nread++;
/* Don't allow the total size of the http headers (including the status
* line) to exceed HTTP_MAX_HEADER_SIZE. This check is here to protect
* embedders against denial-of-service attacks where the attacker feeds
* us a never-ending header that the embedder keeps buffering.
*
* This check is arguably the responsibility of embedders but we're doing
* it on the embedder's behalf because most won't bother and this way we
* make the web a little safer. HTTP_MAX_HEADER_SIZE is still far bigger
* than any reasonable request or response so this should never affect
* day-to-day operation.
*/
///if (nread > HTTP_MAX_HEADER_SIZE) {
if (nread > HTTP_MAX_HEADER_SIZE) {
SET_ERRNO(http_errno.HPE_HEADER_OVERFLOW);
///goto error;
{
if (HTTP_PARSER_ERRNO() == http_errno.HPE_OK) {
SET_ERRNO(http_errno.HPE_UNKNOWN);
}
///return (p - data);
return p;
}
}
}
///reexecute_byte:
while (true) {
debug(TAG, "reexecute_byte "+(reexecute_byte++)+",err:"+HTTP_PARSER_ERRNO().desc()+",state:"+state.state);