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ebb_request_parser.c
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#line 1 "ebb_request_parser.rl"
/* HTTP/1.1 Parser
* Copyright 2008 ryah dahl, ry at tiny clouds punkt org
*
* Based on Zed Shaw's parser for Mongrel.
* Copyright (c) 2005 Zed A. Shaw
*
* This software may be distributed under the "MIT" license included in the
* README
*/
#include "ebb_request_parser.h"
#include <stdio.h>
#include <ctype.h>
#include <assert.h>
#define TRUE 1
#define FALSE 0
#define MIN(a,b) (a < b ? a : b)
#define REMAINING (pe - p)
#define CURRENT (parser->current_request)
#define CONTENT_LENGTH (parser->current_request->content_length)
#define LEN(FROM) (p - parser->FROM##_mark)
#define CALLBACK(FOR) \
if(parser->FOR##_mark && CURRENT->on_##FOR) { \
CURRENT->on_##FOR( CURRENT \
, parser->FOR##_mark \
, p - parser->FOR##_mark \
); \
}
#define HEADER_CALLBACK(FOR) \
if(parser->FOR##_mark && CURRENT->on_##FOR) { \
CURRENT->on_##FOR( CURRENT \
, parser->FOR##_mark \
, p - parser->FOR##_mark \
, CURRENT->number_of_headers \
); \
}
#define EMIT_HEADER_CB(FOR, ptr, len) \
if (CURRENT->on_##FOR) { \
CURRENT->on_##FOR(CURRENT, ptr, len, \
CURRENT->number_of_multipart_headers); \
}
#define EMIT_DATA_CB(FOR, ptr, len) \
if (CURRENT->on_##FOR) { \
CURRENT->on_##FOR(CURRENT, ptr, len); \
}
#define END_REQUEST \
if(CURRENT->on_complete) \
CURRENT->on_complete(CURRENT); \
CURRENT = NULL;
#line 381 "ebb_request_parser.rl"
#line 64 "ebb_request_parser.c"
static const int ebb_request_parser_start = 1;
static const int ebb_request_parser_first_final = 251;
static const int ebb_request_parser_error = 0;
static const int ebb_request_parser_en_ChunkedBody = 233;
static const int ebb_request_parser_en_ChunkedBody_chunk_chunk_end = 243;
static const int ebb_request_parser_en_main = 1;
#line 384 "ebb_request_parser.rl"
#define COPYSTACK(dest, src) for(i = 0; i < EBB_RAGEL_STACK_SIZE; i++) { dest[i] = src[i]; }
enum multipart_state {
s_uninitialized = 1,
s_start,
s_start_boundary,
s_header_field_start,
s_header_field,
s_headers_almost_done,
s_header_value_start,
s_header_value,
s_header_value_almost_done,
s_part_data_start,
s_part_data,
s_part_data_almost_boundary,
s_part_data_boundary,
s_part_data_almost_end,
s_part_data_end,
s_part_data_final_hyphen,
s_end
};
void ebb_request_parser_init(ebb_request_parser *parser)
{
int i;
int cs = 0;
int top = 0;
int stack[EBB_RAGEL_STACK_SIZE];
#line 106 "ebb_request_parser.c"
{
cs = ebb_request_parser_start;
top = 0;
}
#line 415 "ebb_request_parser.rl"
parser->cs = cs;
parser->top = top;
COPYSTACK(parser->stack, stack);
parser->chunk_size = 0;
parser->eating = 0;
parser->current_request = NULL;
parser->header_field_mark = parser->header_value_mark =
parser->query_string_mark = parser->path_mark =
parser->uri_mark = parser->fragment_mark = NULL;
parser->multipart_state = s_uninitialized;
parser->new_request = NULL;
}
#define LF 10
#define CR 13
size_t multipart_parser_execute(ebb_request_parser* parser, const char *buf, size_t len)
{
size_t i = 0;
size_t mark = 0;
char c, cl;
int is_last = 0;
while(!is_last) {
c = buf[i];
is_last = (i == (len - 1));
switch (parser->multipart_state) {
case s_start:
CURRENT->number_of_multipart_headers = 0;
parser->multipart_index = 0;
parser->multipart_state = s_start_boundary;
/* fallthrough */
case s_start_boundary:
// every time needs to take into account the first two '-'
if (parser->multipart_index == CURRENT->multipart_boundary_len + 2) {
if (c != CR) {
return i;
}
parser->multipart_index++;
break;
} else if (parser->multipart_index == (CURRENT->multipart_boundary_len + 3)) {
if (c != LF) {
return i;
}
CURRENT->number_of_multipart_headers = 0;
parser->multipart_index = 0;
parser->multipart_state = s_header_field_start;
break;
}
if (c != CURRENT->multipart_boundary[parser->multipart_index]) {
return i;
}
parser->multipart_index++;
break;
case s_header_field_start:
mark = i;
parser->multipart_state = s_header_field;
/* fallthrough */
case s_header_field:
if (c == CR) {
parser->multipart_state = s_headers_almost_done;
break;
}
if (c == '-') {
break;
}
if (c == ':') {
EMIT_HEADER_CB(multipart_header_field, buf + mark, i - mark);
parser->multipart_state = s_header_value_start;
break;
}
cl = tolower(c);
if (cl < 'a' || cl > 'z') {
return i;
}
if (is_last)
EMIT_HEADER_CB(multipart_header_field, buf + mark, (i - mark) + 1);
break;
case s_headers_almost_done:
if (c != LF) {
return i;
}
parser->multipart_state = s_part_data_start;
break;
case s_header_value_start:
if (c == ' ') {
break;
}
mark = i;
parser->multipart_state = s_header_value;
/* fallthrough */
case s_header_value:
if (c == CR) {
EMIT_HEADER_CB(multipart_header_value, buf + mark, i - mark);
parser->multipart_state = s_header_value_almost_done;
}
if (is_last)
EMIT_HEADER_CB(multipart_header_value, buf + mark, (i - mark) + 1);
break;
case s_header_value_almost_done:
if (c != LF) {
return i;
}
CURRENT->number_of_multipart_headers++;
parser->multipart_state = s_header_field_start;
break;
case s_part_data_start:
if (CURRENT->on_multipart_headers_complete)
CURRENT->on_multipart_headers_complete(CURRENT);
mark = i;
parser->multipart_state = s_part_data;
/* fallthrough */
case s_part_data:
if (c == CR) {
EMIT_DATA_CB(part_data, buf + mark, i - mark);
mark = i;
parser->multipart_state = s_part_data_almost_boundary;
parser->multipart_lookbehind[0] = CR;
break;
}
if (is_last)
EMIT_DATA_CB(part_data, buf + mark, (i - mark) + 1);
break;
case s_part_data_almost_boundary:
if (c == LF) {
parser->multipart_state = s_part_data_boundary;
parser->multipart_lookbehind[1] = LF;
CURRENT->number_of_multipart_headers = 0;
parser->multipart_index = 0;
break;
}
EMIT_DATA_CB(part_data, parser->multipart_lookbehind, 1);
parser->multipart_state = s_part_data;
mark = i --;
break;
case s_part_data_boundary:
if (CURRENT->multipart_boundary[parser->multipart_index] != c) {
EMIT_DATA_CB(part_data, parser->multipart_lookbehind, 2 + parser->multipart_index);
parser->multipart_state = s_part_data;
mark = i --;
break;
}
parser->multipart_lookbehind[2 + parser->multipart_index] = c;
if ((++ parser->multipart_index) == CURRENT->multipart_boundary_len + 2) {
if (CURRENT->on_part_data_complete)
CURRENT->on_part_data_complete(CURRENT);
parser->multipart_state = s_part_data_almost_end;
}
break;
case s_part_data_almost_end:
if (c == '-') {
parser->multipart_state = s_part_data_final_hyphen;
break;
}
if (c == CR) {
parser->multipart_state = s_part_data_end;
break;
}
return i;
case s_part_data_final_hyphen:
if (c == '-') {
parser->multipart_state = s_end;
break;
}
return i;
case s_part_data_end:
if (c == LF) {
parser->multipart_state = s_header_field_start;
break;
}
return i;
case s_end:
break;
default:
return 0;
}
++i;
}
return len;
}
/** exec **/
size_t ebb_request_parser_execute(ebb_request_parser *parser, const char *buffer, size_t len)
{
const char *p, *pe;
int i, cs = parser->cs;
int top = parser->top;
int stack[EBB_RAGEL_STACK_SIZE];
COPYSTACK(stack, parser->stack);
assert(parser->new_request && "undefined callback");
p = buffer;
pe = buffer+len;
if(0 < parser->chunk_size && parser->eating) {
/*
*
* eat chunked body
*
*/
//printf("eat chunk body (before parse)\n");
size_t eat = MIN(len, parser->chunk_size);
if(eat == parser->chunk_size) {
parser->eating = FALSE;
}
if (CURRENT->multipart_boundary_len > 0)
multipart_parser_execute(parser, p, eat);
CURRENT->on_body(CURRENT, p, eat);
p += eat;
parser->chunk_size -= eat;
//printf("eat: %d\n", eat);
} else if( parser->current_request && CURRENT->eating_body ) {
/*
*
* eat normal body
*
*/
//printf("eat normal body (before parse)\n");
size_t eat = MIN(len, CURRENT->content_length - CURRENT->body_read);
if (CURRENT->multipart_boundary_len > 0)
multipart_parser_execute(parser, p, eat);
CURRENT->on_body(CURRENT, p, eat);
p += eat;
CURRENT->body_read += eat;
if(CURRENT->body_read == CURRENT->content_length) {
END_REQUEST;
}
}
if(parser->header_field_mark) parser->header_field_mark = buffer;
if(parser->header_value_mark) parser->header_value_mark = buffer;
if(parser->fragment_mark) parser->fragment_mark = buffer;
if(parser->query_string_mark) parser->query_string_mark = buffer;
if(parser->path_mark) parser->path_mark = buffer;
if(parser->uri_mark) parser->uri_mark = buffer;
#line 379 "ebb_request_parser.c"
{
if ( p == pe )
goto _test_eof;
goto _resume;
_again:
switch ( cs ) {
case 1: goto st1;
case 0: goto st0;
case 2: goto st2;
case 3: goto st3;
case 4: goto st4;
case 5: goto st5;
case 6: goto st6;
case 7: goto st7;
case 8: goto st8;
case 9: goto st9;
case 10: goto st10;
case 11: goto st11;
case 12: goto st12;
case 13: goto st13;
case 14: goto st14;
case 15: goto st15;
case 16: goto st16;
case 17: goto st17;
case 18: goto st18;
case 19: goto st19;
case 251: goto st251;
case 20: goto st20;
case 21: goto st21;
case 22: goto st22;
case 23: goto st23;
case 24: goto st24;
case 25: goto st25;
case 26: goto st26;
case 27: goto st27;
case 28: goto st28;
case 29: goto st29;
case 30: goto st30;
case 31: goto st31;
case 32: goto st32;
case 33: goto st33;
case 34: goto st34;
case 35: goto st35;
case 36: goto st36;
case 37: goto st37;
case 38: goto st38;
case 39: goto st39;
case 40: goto st40;
case 41: goto st41;
case 42: goto st42;
case 43: goto st43;
case 44: goto st44;
case 45: goto st45;
case 46: goto st46;
case 47: goto st47;
case 48: goto st48;
case 49: goto st49;
case 50: goto st50;
case 51: goto st51;
case 52: goto st52;
case 53: goto st53;
case 54: goto st54;
case 55: goto st55;
case 56: goto st56;
case 57: goto st57;
case 58: goto st58;
case 59: goto st59;
case 60: goto st60;
case 61: goto st61;
case 62: goto st62;
case 63: goto st63;
case 64: goto st64;
case 65: goto st65;
case 66: goto st66;
case 67: goto st67;
case 68: goto st68;
case 69: goto st69;
case 70: goto st70;
case 71: goto st71;
case 72: goto st72;
case 73: goto st73;
case 74: goto st74;
case 75: goto st75;
case 76: goto st76;
case 77: goto st77;
case 78: goto st78;
case 79: goto st79;
case 80: goto st80;
case 81: goto st81;
case 82: goto st82;
case 83: goto st83;
case 84: goto st84;
case 85: goto st85;
case 86: goto st86;
case 87: goto st87;
case 88: goto st88;
case 89: goto st89;
case 90: goto st90;
case 91: goto st91;
case 92: goto st92;
case 93: goto st93;
case 94: goto st94;
case 95: goto st95;
case 96: goto st96;
case 97: goto st97;
case 98: goto st98;
case 99: goto st99;
case 100: goto st100;
case 101: goto st101;
case 102: goto st102;
case 103: goto st103;
case 104: goto st104;
case 105: goto st105;
case 106: goto st106;
case 107: goto st107;
case 108: goto st108;
case 109: goto st109;
case 110: goto st110;
case 111: goto st111;
case 112: goto st112;
case 113: goto st113;
case 114: goto st114;
case 115: goto st115;
case 116: goto st116;
case 117: goto st117;
case 118: goto st118;
case 119: goto st119;
case 120: goto st120;
case 121: goto st121;
case 122: goto st122;
case 123: goto st123;
case 124: goto st124;
case 125: goto st125;
case 126: goto st126;
case 127: goto st127;
case 128: goto st128;
case 129: goto st129;
case 130: goto st130;
case 131: goto st131;
case 132: goto st132;
case 133: goto st133;
case 134: goto st134;
case 135: goto st135;
case 136: goto st136;
case 137: goto st137;
case 138: goto st138;
case 139: goto st139;
case 140: goto st140;
case 141: goto st141;
case 142: goto st142;
case 143: goto st143;
case 144: goto st144;
case 145: goto st145;
case 146: goto st146;
case 147: goto st147;
case 148: goto st148;
case 149: goto st149;
case 150: goto st150;
case 151: goto st151;
case 152: goto st152;
case 153: goto st153;
case 154: goto st154;
case 155: goto st155;
case 156: goto st156;
case 157: goto st157;
case 158: goto st158;
case 159: goto st159;
case 160: goto st160;
case 161: goto st161;
case 162: goto st162;
case 163: goto st163;
case 164: goto st164;
case 165: goto st165;
case 166: goto st166;
case 167: goto st167;
case 168: goto st168;
case 169: goto st169;
case 170: goto st170;
case 171: goto st171;
case 172: goto st172;
case 173: goto st173;
case 174: goto st174;
case 175: goto st175;
case 176: goto st176;
case 177: goto st177;
case 178: goto st178;
case 179: goto st179;
case 180: goto st180;
case 181: goto st181;
case 182: goto st182;
case 183: goto st183;
case 184: goto st184;
case 185: goto st185;
case 186: goto st186;
case 187: goto st187;
case 188: goto st188;
case 189: goto st189;
case 190: goto st190;
case 191: goto st191;
case 192: goto st192;
case 193: goto st193;
case 194: goto st194;
case 195: goto st195;
case 196: goto st196;
case 197: goto st197;
case 198: goto st198;
case 199: goto st199;
case 200: goto st200;
case 201: goto st201;
case 202: goto st202;
case 203: goto st203;
case 204: goto st204;
case 205: goto st205;
case 206: goto st206;
case 207: goto st207;
case 208: goto st208;
case 209: goto st209;
case 210: goto st210;
case 211: goto st211;
case 212: goto st212;
case 213: goto st213;
case 214: goto st214;
case 215: goto st215;
case 216: goto st216;
case 217: goto st217;
case 218: goto st218;
case 219: goto st219;
case 220: goto st220;
case 221: goto st221;
case 222: goto st222;
case 223: goto st223;
case 224: goto st224;
case 225: goto st225;
case 226: goto st226;
case 227: goto st227;
case 228: goto st228;
case 229: goto st229;
case 230: goto st230;
case 231: goto st231;
case 232: goto st232;
case 233: goto st233;
case 234: goto st234;
case 235: goto st235;
case 236: goto st236;
case 237: goto st237;
case 252: goto st252;
case 238: goto st238;
case 239: goto st239;
case 240: goto st240;
case 241: goto st241;
case 242: goto st242;
case 243: goto st243;
case 244: goto st244;
case 245: goto st245;
case 246: goto st246;
case 247: goto st247;
case 248: goto st248;
case 249: goto st249;
case 250: goto st250;
default: break;
}
if ( ++p == pe )
goto _test_eof;
_resume:
switch ( cs )
{
st1:
if ( ++p == pe )
goto _test_eof1;
case 1:
switch( (*p) ) {
case 67: goto tr0;
case 68: goto tr2;
case 71: goto tr3;
case 72: goto tr4;
case 76: goto tr5;
case 77: goto tr6;
case 79: goto tr7;
case 80: goto tr8;
case 84: goto tr9;
case 85: goto tr10;
}
goto st0;
st0:
cs = 0;
goto _out;
tr0:
#line 205 "ebb_request_parser.rl"
{
assert(CURRENT == NULL);
CURRENT = parser->new_request(parser->data);
}
goto st2;
st2:
if ( ++p == pe )
goto _test_eof2;
case 2:
#line 679 "ebb_request_parser.c"
if ( (*p) == 79 )
goto st3;
goto st0;
st3:
if ( ++p == pe )
goto _test_eof3;
case 3:
if ( (*p) == 80 )
goto st4;
goto st0;
st4:
if ( ++p == pe )
goto _test_eof4;
case 4:
if ( (*p) == 89 )
goto st5;
goto st0;
st5:
if ( ++p == pe )
goto _test_eof5;
case 5:
if ( (*p) == 32 )
goto tr14;
goto st0;
tr14:
#line 66 "ebb_request_parser.rl"
{ CURRENT->method = EBB_COPY; }
goto st6;
tr42:
#line 67 "ebb_request_parser.rl"
{ CURRENT->method = EBB_DELETE; }
goto st6;
tr45:
#line 68 "ebb_request_parser.rl"
{ CURRENT->method = EBB_GET; }
goto st6;
tr49:
#line 69 "ebb_request_parser.rl"
{ CURRENT->method = EBB_HEAD; }
goto st6;
tr53:
#line 70 "ebb_request_parser.rl"
{ CURRENT->method = EBB_LOCK; }
goto st6;
tr59:
#line 71 "ebb_request_parser.rl"
{ CURRENT->method = EBB_MKCOL; }
goto st6;
tr62:
#line 72 "ebb_request_parser.rl"
{ CURRENT->method = EBB_MOVE; }
goto st6;
tr69:
#line 73 "ebb_request_parser.rl"
{ CURRENT->method = EBB_OPTIONS; }
goto st6;
tr75:
#line 74 "ebb_request_parser.rl"
{ CURRENT->method = EBB_POST; }
goto st6;
tr83:
#line 75 "ebb_request_parser.rl"
{ CURRENT->method = EBB_PROPFIND; }
goto st6;
tr88:
#line 76 "ebb_request_parser.rl"
{ CURRENT->method = EBB_PROPPATCH; }
goto st6;
tr90:
#line 77 "ebb_request_parser.rl"
{ CURRENT->method = EBB_PUT; }
goto st6;
tr95:
#line 78 "ebb_request_parser.rl"
{ CURRENT->method = EBB_TRACE; }
goto st6;
tr101:
#line 79 "ebb_request_parser.rl"
{ CURRENT->method = EBB_UNLOCK; }
goto st6;
st6:
if ( ++p == pe )
goto _test_eof6;
case 6:
#line 764 "ebb_request_parser.c"
switch( (*p) ) {
case 42: goto tr15;
case 43: goto tr16;
case 47: goto tr17;
case 58: goto tr18;
}
if ( (*p) < 65 ) {
if ( 45 <= (*p) && (*p) <= 57 )
goto tr16;
} else if ( (*p) > 90 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto tr16;
} else
goto tr16;
goto st0;
tr15:
#line 64 "ebb_request_parser.rl"
{ parser->uri_mark = p; }
goto st7;
st7:
if ( ++p == pe )
goto _test_eof7;
case 7:
#line 788 "ebb_request_parser.c"
switch( (*p) ) {
case 32: goto tr19;
case 35: goto tr20;
}
goto st0;
tr19:
#line 93 "ebb_request_parser.rl"
{
//printf("request uri\n");
CALLBACK(uri);
parser->uri_mark = NULL;
}
goto st8;
tr260:
#line 61 "ebb_request_parser.rl"
{ parser->fragment_mark = p; }
#line 99 "ebb_request_parser.rl"
{
//printf("fragment\n");
CALLBACK(fragment);
parser->fragment_mark = NULL;
}
goto st8;
tr263:
#line 99 "ebb_request_parser.rl"
{
//printf("fragment\n");
CALLBACK(fragment);
parser->fragment_mark = NULL;
}
goto st8;
tr271:
#line 111 "ebb_request_parser.rl"
{
//printf("request path\n");
CALLBACK(path);
parser->path_mark = NULL;
}
#line 93 "ebb_request_parser.rl"
{
//printf("request uri\n");
CALLBACK(uri);
parser->uri_mark = NULL;
}
goto st8;
tr277:
#line 62 "ebb_request_parser.rl"
{ parser->query_string_mark = p; }
#line 105 "ebb_request_parser.rl"
{
//printf("query string\n");
CALLBACK(query_string);
parser->query_string_mark = NULL;
}
#line 93 "ebb_request_parser.rl"
{
//printf("request uri\n");
CALLBACK(uri);
parser->uri_mark = NULL;
}
goto st8;
tr281:
#line 105 "ebb_request_parser.rl"
{
//printf("query string\n");
CALLBACK(query_string);
parser->query_string_mark = NULL;
}
#line 93 "ebb_request_parser.rl"
{
//printf("request uri\n");
CALLBACK(uri);
parser->uri_mark = NULL;
}
goto st8;
st8:
if ( ++p == pe )
goto _test_eof8;
case 8:
#line 868 "ebb_request_parser.c"
if ( (*p) == 72 )
goto st9;
goto st0;
st9:
if ( ++p == pe )
goto _test_eof9;
case 9:
if ( (*p) == 84 )
goto st10;
goto st0;
st10:
if ( ++p == pe )
goto _test_eof10;
case 10:
if ( (*p) == 84 )
goto st11;
goto st0;
st11:
if ( ++p == pe )
goto _test_eof11;
case 11:
if ( (*p) == 80 )
goto st12;
goto st0;
st12:
if ( ++p == pe )
goto _test_eof12;
case 12:
if ( (*p) == 47 )
goto st13;
goto st0;
st13:
if ( ++p == pe )
goto _test_eof13;
case 13:
if ( 48 <= (*p) && (*p) <= 57 )
goto tr26;
goto st0;
tr26:
#line 147 "ebb_request_parser.rl"
{
CURRENT->version_major *= 10;
CURRENT->version_major += *p - '0';
}
goto st14;
st14:
if ( ++p == pe )
goto _test_eof14;
case 14:
#line 918 "ebb_request_parser.c"
if ( (*p) == 46 )
goto st15;
if ( 48 <= (*p) && (*p) <= 57 )
goto tr26;
goto st0;
st15:
if ( ++p == pe )
goto _test_eof15;
case 15:
if ( 48 <= (*p) && (*p) <= 57 )
goto tr28;
goto st0;
tr28:
#line 152 "ebb_request_parser.rl"
{
CURRENT->version_minor *= 10;
CURRENT->version_minor += *p - '0';
}
goto st16;
st16:
if ( ++p == pe )
goto _test_eof16;
case 16:
#line 942 "ebb_request_parser.c"
if ( (*p) == 13 )
goto st17;
if ( 48 <= (*p) && (*p) <= 57 )
goto tr28;
goto st0;
st17:
if ( ++p == pe )
goto _test_eof17;
case 17:
if ( (*p) == 10 )
goto st18;
goto st0;
st18:
if ( ++p == pe )
goto _test_eof18;
case 18:
switch( (*p) ) {
case 13: goto st19;
case 33: goto tr32;
case 67: goto tr33;
case 69: goto tr34;
case 84: goto tr35;
case 99: goto tr33;
case 101: goto tr34;
case 116: goto tr35;
case 124: goto tr32;
case 126: goto tr32;
}
if ( (*p) < 45 ) {
if ( (*p) > 39 ) {
if ( 42 <= (*p) && (*p) <= 43 )
goto tr32;
} else if ( (*p) >= 35 )
goto tr32;
} else if ( (*p) > 46 ) {
if ( (*p) < 65 ) {
if ( 48 <= (*p) && (*p) <= 57 )
goto tr32;
} else if ( (*p) > 90 ) {
if ( 94 <= (*p) && (*p) <= 122 )
goto tr32;
} else
goto tr32;
} else
goto tr32;
goto st0;
tr110:
#line 157 "ebb_request_parser.rl"
{
CURRENT->number_of_headers++;
}
goto st19;
st19:
if ( ++p == pe )
goto _test_eof19;
case 19:
#line 999 "ebb_request_parser.c"
if ( (*p) == 10 )
goto tr36;