2 * Copyright (c) 2009 Eric Wong (all bugs are Eric's fault)
3 * Copyright (c) 2005 Zed A. Shaw
4 * You can redistribute it and/or modify it under the same terms as Ruby 1.8 or
5 * the GPLv2+ (GPLv3+ preferred)
11 #include <sys/types.h>
12 #include "common_field_optimization.h"
13 #include "global_variables.h"
16 void init_unicorn_httpdate(VALUE mark_ary);
18 #define UH_FL_CHUNKED 0x1
19 #define UH_FL_HASBODY 0x2
20 #define UH_FL_INBODY 0x4
21 #define UH_FL_HASTRAILER 0x8
22 #define UH_FL_INTRAILER 0x10
23 #define UH_FL_INCHUNK 0x20
24 #define UH_FL_REQEOF 0x40
25 #define UH_FL_KAVERSION 0x80
26 #define UH_FL_HASHEADER 0x100
27 #define UH_FL_TO_CLEAR 0x200
28 #define UH_FL_RESSTART 0x400 /* for check_client_connection */
30 /* all of these flags need to be set for keepalive to be supported */
31 #define UH_FL_KEEPALIVE (UH_FL_KAVERSION | UH_FL_REQEOF | UH_FL_HASHEADER)
33 static unsigned int MAX_HEADER_LEN = 1024 * (80 + 32); /* same as Mongrel */
35 /* this is only intended for use with Rainbows! */
36 static VALUE set_maxhdrlen(VALUE self, VALUE len)
38 return UINT2NUM(MAX_HEADER_LEN = NUM2UINT(len));
41 /* keep this small for other servers (e.g. yahns) since every client has one */
43 int cs; /* Ragel internal state */
47 union { /* these 2 fields don't nest */
52 unsigned int field_len; /* only used during header processing */
53 unsigned int dest_offset; /* only used during body processing */
57 VALUE cont; /* Qfalse: unset, Qnil: ignored header, T_STRING: append */
64 static ID id_set_backtrace;
66 #ifdef HAVE_RB_HASH_CLEAR /* Ruby >= 2.0 */
67 # define my_hash_clear(h) (void)rb_hash_clear(h)
68 #else /* !HAVE_RB_HASH_CLEAR - Ruby <= 1.9.3 */
72 static void my_hash_clear(VALUE h)
74 rb_funcall(h, id_clear, 0);
76 #endif /* HAVE_RB_HASH_CLEAR */
78 static void finalize_header(struct http_parser *hp);
80 static void parser_raise(VALUE klass, const char *msg)
82 VALUE exc = rb_exc_new2(klass, msg);
83 VALUE bt = rb_ary_new();
85 rb_funcall(exc, id_set_backtrace, 1, bt);
89 static inline unsigned int ulong2uint(unsigned long n)
91 unsigned int i = (unsigned int)n;
93 if (sizeof(unsigned int) != sizeof(unsigned long)) {
94 if ((unsigned long)i != n) {
95 rb_raise(rb_eRangeError, "too large to be 32-bit uint: %lu", n);
101 #define REMAINING (unsigned long)(pe - p)
102 #define LEN(AT, FPC) (ulong2uint(FPC - buffer) - hp->AT)
103 #define MARK(M,FPC) (hp->M = ulong2uint((FPC) - buffer))
104 #define PTR_TO(F) (buffer + hp->F)
105 #define STR_NEW(M,FPC) rb_str_new(PTR_TO(M), LEN(M, FPC))
106 #define STRIPPED_STR_NEW(M,FPC) stripped_str_new(PTR_TO(M), LEN(M, FPC))
108 #define HP_FL_TEST(hp,fl) ((hp)->flags & (UH_FL_##fl))
109 #define HP_FL_SET(hp,fl) ((hp)->flags |= (UH_FL_##fl))
110 #define HP_FL_UNSET(hp,fl) ((hp)->flags &= ~(UH_FL_##fl))
111 #define HP_FL_ALL(hp,fl) (HP_FL_TEST(hp, fl) == (UH_FL_##fl))
113 static int is_lws(char c)
115 return (c == ' ' || c == '\t');
118 static VALUE stripped_str_new(const char *str, long len)
122 for (end = len - 1; end >= 0 && is_lws(str[end]); end--);
124 return rb_str_new(str, end + 1);
128 * handles values of the "Connection:" header, keepalive is implied
129 * for HTTP/1.1 but needs to be explicitly enabled with HTTP/1.0
130 * Additionally, we require GET/HEAD requests to support keepalive.
132 static void hp_keepalive_connection(struct http_parser *hp, VALUE val)
134 if (STR_CSTR_CASE_EQ(val, "keep-alive")) {
135 /* basically have HTTP/1.0 masquerade as HTTP/1.1+ */
136 HP_FL_SET(hp, KAVERSION);
137 } else if (STR_CSTR_CASE_EQ(val, "close")) {
139 * it doesn't matter what HTTP version or request method we have,
140 * if a client says "Connection: close", we disable keepalive
142 HP_FL_UNSET(hp, KAVERSION);
145 * client could've sent anything, ignore it for now. Maybe
146 * "HP_FL_UNSET(hp, KAVERSION);" just in case?
147 * Raising an exception might be too mean...
153 request_method(struct http_parser *hp, const char *ptr, size_t len)
155 VALUE v = rb_str_new(ptr, len);
157 rb_hash_aset(hp->env, g_request_method, v);
161 http_version(struct http_parser *hp, const char *ptr, size_t len)
165 HP_FL_SET(hp, HASHEADER);
167 if (CONST_MEM_EQ("HTTP/1.1", ptr, len)) {
168 /* HTTP/1.1 implies keepalive unless "Connection: close" is set */
169 HP_FL_SET(hp, KAVERSION);
171 } else if (CONST_MEM_EQ("HTTP/1.0", ptr, len)) {
174 v = rb_str_new(ptr, len);
176 rb_hash_aset(hp->env, g_server_protocol, v);
177 rb_hash_aset(hp->env, g_http_version, v);
180 static inline void hp_invalid_if_trailer(struct http_parser *hp)
182 if (HP_FL_TEST(hp, INTRAILER))
183 parser_raise(eHttpParserError, "invalid Trailer");
186 static void write_cont_value(struct http_parser *hp,
187 char *buffer, const char *p)
191 long len = LEN(mark, p);
194 if (hp->cont == Qfalse)
195 parser_raise(eHttpParserError, "invalid continuation line");
197 return; /* we're ignoring this header (probably Host:) */
199 assert(TYPE(hp->cont) == T_STRING && "continuation line is not a string");
200 assert(hp->mark > 0 && "impossible continuation line offset");
205 cont_len = RSTRING_LEN(hp->cont);
212 /* normalize tab to space */
214 assert((' ' == *vptr || '\t' == *vptr) && "invalid leading white space");
218 for (end = len - 1; end >= 0 && is_lws(vptr[end]); end--);
219 rb_str_buf_cat(hp->cont, vptr, end + 1);
222 static void write_value(struct http_parser *hp,
223 const char *buffer, const char *p)
225 VALUE f = find_common_field(PTR_TO(start.field), hp->s.field_len);
229 VALIDATE_MAX_LENGTH(LEN(mark, p), FIELD_VALUE);
230 v = LEN(mark, p) == 0 ? rb_str_buf_new(128) : STRIPPED_STR_NEW(mark, p);
232 const char *field = PTR_TO(start.field);
233 size_t flen = hp->s.field_len;
235 VALIDATE_MAX_LENGTH(flen, FIELD_NAME);
238 * ignore "Version" headers since they conflict with the HTTP_VERSION
241 if (CONST_MEM_EQ("VERSION", field, flen)) {
245 f = uncommon_field(field, flen);
246 } else if (f == g_http_connection) {
247 hp_keepalive_connection(hp, v);
248 } else if (f == g_content_length) {
249 hp->len.content = parse_length(RSTRING_PTR(v), RSTRING_LEN(v));
250 if (hp->len.content < 0)
251 parser_raise(eHttpParserError, "invalid Content-Length");
252 if (hp->len.content != 0)
253 HP_FL_SET(hp, HASBODY);
254 hp_invalid_if_trailer(hp);
255 } else if (f == g_http_transfer_encoding) {
256 if (STR_CSTR_CASE_EQ(v, "chunked")) {
257 HP_FL_SET(hp, CHUNKED);
258 HP_FL_SET(hp, HASBODY);
260 hp_invalid_if_trailer(hp);
261 } else if (f == g_http_trailer) {
262 HP_FL_SET(hp, HASTRAILER);
263 hp_invalid_if_trailer(hp);
265 assert(TYPE(f) == T_STRING && "memoized object is not a string");
269 e = rb_hash_aref(hp->env, f);
271 hp->cont = rb_hash_aset(hp->env, f, v);
272 } else if (f == g_http_host) {
274 * ignored, absolute URLs in REQUEST_URI take precedence over
275 * the Host: header (ref: rfc 2616, section 5.2.1)
279 rb_str_buf_cat(e, ",", 1);
280 hp->cont = rb_str_buf_append(e, v);
289 action mark {MARK(mark, fpc); }
291 action start_field { MARK(start.field, fpc); }
292 action snake_upcase_field { snake_upcase_char(deconst(fpc)); }
293 action downcase_char { downcase_char(deconst(fpc)); }
294 action write_field { hp->s.field_len = LEN(start.field, fpc); }
295 action start_value { MARK(mark, fpc); }
296 action write_value { write_value(hp, buffer, fpc); }
297 action write_cont_value { write_cont_value(hp, buffer, fpc); }
298 action request_method { request_method(hp, PTR_TO(mark), LEN(mark, fpc)); }
300 rb_hash_aset(hp->env, g_rack_url_scheme, STR_NEW(mark, fpc));
302 action host { rb_hash_aset(hp->env, g_http_host, STR_NEW(mark, fpc)); }
306 VALIDATE_MAX_URI_LENGTH(LEN(mark, fpc), REQUEST_URI);
307 str = rb_hash_aset(hp->env, g_request_uri, STR_NEW(mark, fpc));
309 * "OPTIONS * HTTP/1.1\r\n" is a valid request, but we can't have '*'
310 * in REQUEST_PATH or PATH_INFO or else Rack::Lint will complain
312 if (STR_CSTR_EQ(str, "*")) {
313 str = rb_str_new(NULL, 0);
314 rb_hash_aset(hp->env, g_path_info, str);
315 rb_hash_aset(hp->env, g_request_path, str);
319 VALIDATE_MAX_URI_LENGTH(LEN(mark, fpc), FRAGMENT);
320 rb_hash_aset(hp->env, g_fragment, STR_NEW(mark, fpc));
322 action start_query {MARK(start.query, fpc); }
323 action query_string {
324 VALIDATE_MAX_URI_LENGTH(LEN(start.query, fpc), QUERY_STRING);
325 rb_hash_aset(hp->env, g_query_string, STR_NEW(start.query, fpc));
327 action http_version { http_version(hp, PTR_TO(mark), LEN(mark, fpc)); }
328 action request_path {
331 VALIDATE_MAX_URI_LENGTH(LEN(mark, fpc), REQUEST_PATH);
332 val = rb_hash_aset(hp->env, g_request_path, STR_NEW(mark, fpc));
334 /* rack says PATH_INFO must start with "/" or be empty */
335 if (!STR_CSTR_EQ(val, "*"))
336 rb_hash_aset(hp->env, g_path_info, val);
338 action add_to_chunk_size {
339 hp->len.chunk = step_incr(hp->len.chunk, fc, 16);
340 if (hp->len.chunk < 0)
341 parser_raise(eHttpParserError, "invalid chunk size");
346 cs = http_parser_first_final;
347 if (HP_FL_TEST(hp, HASBODY)) {
348 HP_FL_SET(hp, INBODY);
349 if (HP_FL_TEST(hp, CHUNKED))
350 cs = http_parser_en_ChunkedBody;
352 HP_FL_SET(hp, REQEOF);
353 assert(!HP_FL_TEST(hp, CHUNKED) && "chunked encoding without body!");
356 * go back to Ruby so we can call the Rack application, we'll reenter
357 * the parser iff the body needs to be processed.
362 action end_trailers {
363 cs = http_parser_first_final;
367 action end_chunked_body {
368 HP_FL_SET(hp, INTRAILER);
369 cs = http_parser_en_Trailers;
371 assert(p <= pe && "buffer overflow after chunked body");
375 action skip_chunk_data {
376 skip_chunk_data_hack: {
377 size_t nr = MIN((size_t)hp->len.chunk, REMAINING);
378 memcpy(RSTRING_PTR(hp->cont) + hp->s.dest_offset, fpc, nr);
379 hp->s.dest_offset += nr;
382 assert(hp->len.chunk >= 0 && "negative chunk length");
383 if ((size_t)hp->len.chunk > REMAINING) {
384 HP_FL_SET(hp, INCHUNK);
392 include unicorn_http_common "unicorn_http_common.rl";
398 static void http_parser_init(struct http_parser *hp)
407 hp->cont = Qfalse; /* zero on MRI, should be optimized away by above */
414 http_parser_execute(struct http_parser *hp, char *buffer, size_t len)
418 size_t off = hp->offset;
420 if (cs == http_parser_first_final)
423 assert(off <= len && "offset past end of buffer");
428 assert((void *)(pe - p) == (void *)(len - off) &&
429 "pointers aren't same distance");
431 if (HP_FL_TEST(hp, INCHUNK)) {
432 HP_FL_UNSET(hp, INCHUNK);
433 goto skip_chunk_data_hack;
436 post_exec: /* "_out:" also goes here */
437 if (hp->cs != http_parser_error)
439 hp->offset = ulong2uint(p - buffer);
441 assert(p <= pe && "buffer overflow after parsing execute");
442 assert(hp->offset <= len && "offset longer than length");
445 static void hp_mark(void *ptr)
447 struct http_parser *hp = ptr;
451 rb_gc_mark(hp->cont);
454 static size_t hp_memsize(const void *ptr)
456 return sizeof(struct http_parser);
459 static const rb_data_type_t hp_type = {
461 { hp_mark, RUBY_TYPED_DEFAULT_FREE, hp_memsize, /* reserved */ },
462 /* parent, data, [ flags ] */
465 static struct http_parser *data_get(VALUE self)
467 struct http_parser *hp;
469 TypedData_Get_Struct(self, struct http_parser, &hp_type, hp);
470 assert(hp && "failed to extract http_parser struct");
475 * set rack.url_scheme to "https" or "http", no others are allowed by Rack
476 * this resembles the Rack::Request#scheme method as of rack commit
477 * 35bb5ba6746b5d346de9202c004cc926039650c7
479 static void set_url_scheme(VALUE env, VALUE *server_port)
481 VALUE scheme = rb_hash_aref(env, g_rack_url_scheme);
485 * would anybody be horribly opposed to removing the X-Forwarded-SSL
486 * and X-Forwarded-Proto handling from this parser? We've had it
487 * forever and nobody has said anything against it, either.
488 * Anyways, please send comments to our public mailing list:
489 * unicorn-public@bogomips.org (no HTML mail, no subscription necessary)
491 scheme = rb_hash_aref(env, g_http_x_forwarded_ssl);
492 if (!NIL_P(scheme) && STR_CSTR_EQ(scheme, "on")) {
493 *server_port = g_port_443;
496 scheme = rb_hash_aref(env, g_http_x_forwarded_proto);
500 long len = RSTRING_LEN(scheme);
501 if (len >= 5 && !memcmp(RSTRING_PTR(scheme), "https", 5)) {
504 *server_port = g_port_443;
510 rb_hash_aset(env, g_rack_url_scheme, scheme);
511 } else if (STR_CSTR_EQ(scheme, "https")) {
512 *server_port = g_port_443;
514 assert(*server_port == g_port_80 && "server_port not set");
519 * Parse and set the SERVER_NAME and SERVER_PORT variables
520 * Not supporting X-Forwarded-Host/X-Forwarded-Port in here since
521 * anybody who needs them is using an unsupported configuration and/or
522 * incompetent. Rack::Request will handle X-Forwarded-{Port,Host} just
525 static void set_server_vars(VALUE env, VALUE *server_port)
527 VALUE server_name = g_localhost;
528 VALUE host = rb_hash_aref(env, g_http_host);
531 char *host_ptr = RSTRING_PTR(host);
532 long host_len = RSTRING_LEN(host);
535 if (*host_ptr == '[') { /* ipv6 address format */
536 char *rbracket = memchr(host_ptr + 1, ']', host_len - 1);
539 colon = (rbracket[1] == ':') ? rbracket + 1 : NULL;
541 colon = memchr(host_ptr + 1, ':', host_len - 1);
543 colon = memchr(host_ptr, ':', host_len);
547 long port_start = colon - host_ptr + 1;
549 server_name = rb_str_substr(host, 0, colon - host_ptr);
550 if ((host_len - port_start) > 0)
551 *server_port = rb_str_substr(host, port_start, host_len);
556 rb_hash_aset(env, g_server_name, server_name);
557 rb_hash_aset(env, g_server_port, *server_port);
560 static void finalize_header(struct http_parser *hp)
562 VALUE server_port = g_port_80;
564 set_url_scheme(hp->env, &server_port);
565 set_server_vars(hp->env, &server_port);
567 if (!HP_FL_TEST(hp, HASHEADER))
568 rb_hash_aset(hp->env, g_server_protocol, g_http_09);
570 /* rack requires QUERY_STRING */
571 if (NIL_P(rb_hash_aref(hp->env, g_query_string)))
572 rb_hash_aset(hp->env, g_query_string, rb_str_new(NULL, 0));
575 static VALUE HttpParser_alloc(VALUE klass)
577 struct http_parser *hp;
579 return TypedData_Make_Struct(klass, struct http_parser, &hp_type, hp);
584 * parser.new => parser
586 * Creates a new parser.
588 static VALUE HttpParser_init(VALUE self)
590 struct http_parser *hp = data_get(self);
592 http_parser_init(hp);
593 hp->buf = rb_str_new(NULL, 0);
594 hp->env = rb_hash_new();
601 * parser.clear => parser
603 * Resets the parser to it's initial state so that you can reuse it
604 * rather than making new ones.
606 static VALUE HttpParser_clear(VALUE self)
608 struct http_parser *hp = data_get(self);
610 http_parser_init(hp);
611 my_hash_clear(hp->env);
616 static void advance_str(VALUE str, off_t nr)
618 long len = RSTRING_LEN(str);
625 assert(nr <= len && "trying to advance past end of buffer");
627 if (len > 0) /* unlikely, len is usually 0 */
628 memmove(RSTRING_PTR(str), RSTRING_PTR(str) + nr, len);
629 rb_str_set_len(str, len);
634 * parser.content_length => nil or Integer
636 * Returns the number of bytes left to run through HttpParser#filter_body.
637 * This will initially be the value of the "Content-Length" HTTP header
638 * after header parsing is complete and will decrease in value as
639 * HttpParser#filter_body is called for each chunk. This should return
640 * zero for requests with no body.
642 * This will return nil on "Transfer-Encoding: chunked" requests.
644 static VALUE HttpParser_content_length(VALUE self)
646 struct http_parser *hp = data_get(self);
648 return HP_FL_TEST(hp, CHUNKED) ? Qnil : OFFT2NUM(hp->len.content);
652 * Document-method: parse
654 * parser.parse => env or nil
656 * Takes a Hash and a String of data, parses the String of data filling
657 * in the Hash returning the Hash if parsing is finished, nil otherwise
658 * When returning the env Hash, it may modify data to point to where
659 * body processing should begin.
661 * Raises HttpParserError if there are parsing errors.
663 static VALUE HttpParser_parse(VALUE self)
665 struct http_parser *hp = data_get(self);
666 VALUE data = hp->buf;
668 if (HP_FL_TEST(hp, TO_CLEAR))
669 HttpParser_clear(self);
671 http_parser_execute(hp, RSTRING_PTR(data), RSTRING_LEN(data));
672 if (hp->offset > MAX_HEADER_LEN)
673 parser_raise(e413, "HTTP header is too large");
675 if (hp->cs == http_parser_first_final ||
676 hp->cs == http_parser_en_ChunkedBody) {
677 advance_str(data, hp->offset + 1);
679 if (HP_FL_TEST(hp, INTRAILER))
680 HP_FL_SET(hp, REQEOF);
685 if (hp->cs == http_parser_error)
686 parser_raise(eHttpParserError, "Invalid HTTP format, parsing fails.");
692 * Document-method: parse
694 * parser.add_parse(buffer) => env or nil
696 * adds the contents of +buffer+ to the internal buffer and attempts to
697 * continue parsing. Returns the +env+ Hash on success or nil if more
700 * Raises HttpParserError if there are parsing errors.
702 static VALUE HttpParser_add_parse(VALUE self, VALUE buffer)
704 struct http_parser *hp = data_get(self);
706 Check_Type(buffer, T_STRING);
707 rb_str_buf_append(hp->buf, buffer);
709 return HttpParser_parse(self);
713 * Document-method: trailers
715 * parser.trailers(req, data) => req or nil
717 * This is an alias for HttpParser#headers
721 * Document-method: headers
723 static VALUE HttpParser_headers(VALUE self, VALUE env, VALUE buf)
725 struct http_parser *hp = data_get(self);
730 return HttpParser_parse(self);
733 static int chunked_eof(struct http_parser *hp)
735 return ((hp->cs == http_parser_first_final) || HP_FL_TEST(hp, INTRAILER));
740 * parser.body_eof? => true or false
742 * Detects if we're done filtering the body or not. This can be used
743 * to detect when to stop calling HttpParser#filter_body.
745 static VALUE HttpParser_body_eof(VALUE self)
747 struct http_parser *hp = data_get(self);
749 if (HP_FL_TEST(hp, CHUNKED))
750 return chunked_eof(hp) ? Qtrue : Qfalse;
752 return hp->len.content == 0 ? Qtrue : Qfalse;
757 * parser.keepalive? => true or false
759 * This should be used to detect if a request can really handle
760 * keepalives and pipelining. Currently, the rules are:
762 * 1. MUST be a GET or HEAD request
763 * 2. MUST be HTTP/1.1 +or+ HTTP/1.0 with "Connection: keep-alive"
764 * 3. MUST NOT have "Connection: close" set
766 static VALUE HttpParser_keepalive(VALUE self)
768 struct http_parser *hp = data_get(self);
770 return HP_FL_ALL(hp, KEEPALIVE) ? Qtrue : Qfalse;
775 * parser.next? => true or false
777 * Exactly like HttpParser#keepalive?, except it will reset the internal
778 * parser state on next parse if it returns true.
780 static VALUE HttpParser_next(VALUE self)
782 struct http_parser *hp = data_get(self);
784 if (HP_FL_ALL(hp, KEEPALIVE)) {
785 HP_FL_SET(hp, TO_CLEAR);
793 * parser.headers? => true or false
795 * This should be used to detect if a request has headers (and if
796 * the response will have headers as well). HTTP/0.9 requests
797 * should return false, all subsequent HTTP versions will return true
799 static VALUE HttpParser_has_headers(VALUE self)
801 struct http_parser *hp = data_get(self);
803 return HP_FL_TEST(hp, HASHEADER) ? Qtrue : Qfalse;
806 static VALUE HttpParser_buf(VALUE self)
808 return data_get(self)->buf;
811 static VALUE HttpParser_env(VALUE self)
813 return data_get(self)->env;
818 * parser.filter_body(dst, src) => nil/src
820 * Takes a String of +src+, will modify data if dechunking is done.
821 * Returns +nil+ if there is more data left to process. Returns
822 * +src+ if body processing is complete. When returning +src+,
823 * it may modify +src+ so the start of the string points to where
824 * the body ended so that trailer processing can begin.
826 * Raises HttpParserError if there are dechunking errors.
827 * Basically this is a glorified memcpy(3) that copies +src+
828 * into +buf+ while filtering it through the dechunker.
830 static VALUE HttpParser_filter_body(VALUE self, VALUE dst, VALUE src)
832 struct http_parser *hp = data_get(self);
836 srcptr = RSTRING_PTR(src);
837 srclen = RSTRING_LEN(src);
841 if (HP_FL_TEST(hp, CHUNKED)) {
842 if (!chunked_eof(hp)) {
844 rb_str_resize(dst, srclen); /* we can never copy more than srclen bytes */
846 hp->s.dest_offset = 0;
849 http_parser_execute(hp, srcptr, srclen);
850 if (hp->cs == http_parser_error)
851 parser_raise(eHttpParserError, "Invalid HTTP format, parsing fails.");
853 assert(hp->s.dest_offset <= hp->offset &&
854 "destination buffer overflow");
855 advance_str(src, hp->offset);
856 rb_str_set_len(dst, hp->s.dest_offset);
858 if (RSTRING_LEN(dst) == 0 && chunked_eof(hp)) {
859 assert(hp->len.chunk == 0 && "chunk at EOF but more to parse");
865 /* no need to enter the Ragel machine for unchunked transfers */
866 assert(hp->len.content >= 0 && "negative Content-Length");
867 if (hp->len.content > 0) {
868 long nr = MIN(srclen, hp->len.content);
871 rb_str_resize(dst, nr);
873 * using rb_str_replace() to avoid memcpy() doesn't help in
874 * most cases because a GC-aware programmer will pass an explicit
875 * buffer to env["rack.input"].read and reuse the buffer in a loop.
876 * This causes copy-on-write behavior to be triggered anyways
877 * when the +src+ buffer is modified (when reading off the socket).
880 memcpy(RSTRING_PTR(dst), srcptr, nr);
881 hp->len.content -= nr;
882 if (hp->len.content == 0) {
883 HP_FL_SET(hp, REQEOF);
884 hp->cs = http_parser_first_final;
886 advance_str(src, nr);
890 hp->offset = 0; /* for trailer parsing */
894 static VALUE HttpParser_rssset(VALUE self, VALUE boolean)
896 struct http_parser *hp = data_get(self);
899 HP_FL_SET(hp, RESSTART);
901 HP_FL_UNSET(hp, RESSTART);
903 return boolean; /* ignored by Ruby anyways */
906 static VALUE HttpParser_rssget(VALUE self)
908 struct http_parser *hp = data_get(self);
910 return HP_FL_TEST(hp, RESSTART) ? Qtrue : Qfalse;
913 #define SET_GLOBAL(var,str) do { \
914 var = find_common_field(str, sizeof(str) - 1); \
915 assert(!NIL_P(var) && "missed global field"); \
918 void Init_unicorn_http(void)
920 static VALUE mark_ary;
921 VALUE mUnicorn, cHttpParser;
923 mark_ary = rb_ary_new();
924 rb_global_variable(&mark_ary);
925 mUnicorn = rb_define_module("Unicorn");
926 cHttpParser = rb_define_class_under(mUnicorn, "HttpParser", rb_cObject);
928 rb_define_class_under(mUnicorn, "HttpParserError", rb_eIOError);
929 e413 = rb_define_class_under(mUnicorn, "RequestEntityTooLargeError",
931 e414 = rb_define_class_under(mUnicorn, "RequestURITooLongError",
934 init_globals(mark_ary);
935 rb_define_alloc_func(cHttpParser, HttpParser_alloc);
936 rb_define_method(cHttpParser, "initialize", HttpParser_init, 0);
937 rb_define_method(cHttpParser, "clear", HttpParser_clear, 0);
938 rb_define_method(cHttpParser, "parse", HttpParser_parse, 0);
939 rb_define_method(cHttpParser, "add_parse", HttpParser_add_parse, 1);
940 rb_define_method(cHttpParser, "headers", HttpParser_headers, 2);
941 rb_define_method(cHttpParser, "trailers", HttpParser_headers, 2);
942 rb_define_method(cHttpParser, "filter_body", HttpParser_filter_body, 2);
943 rb_define_method(cHttpParser, "content_length", HttpParser_content_length, 0);
944 rb_define_method(cHttpParser, "body_eof?", HttpParser_body_eof, 0);
945 rb_define_method(cHttpParser, "keepalive?", HttpParser_keepalive, 0);
946 rb_define_method(cHttpParser, "headers?", HttpParser_has_headers, 0);
947 rb_define_method(cHttpParser, "next?", HttpParser_next, 0);
948 rb_define_method(cHttpParser, "buf", HttpParser_buf, 0);
949 rb_define_method(cHttpParser, "env", HttpParser_env, 0);
950 rb_define_method(cHttpParser, "response_start_sent=", HttpParser_rssset, 1);
951 rb_define_method(cHttpParser, "response_start_sent", HttpParser_rssget, 0);
954 * The maximum size a single chunk when using chunked transfer encoding.
955 * This is only a theoretical maximum used to detect errors in clients,
956 * it is highly unlikely to encounter clients that send more than
957 * several kilobytes at once.
959 rb_define_const(cHttpParser, "CHUNK_MAX", OFFT2NUM(UH_OFF_T_MAX));
962 * The maximum size of the body as specified by Content-Length.
963 * This is only a theoretical maximum, the actual limit is subject
964 * to the limits of the file system used for +Dir.tmpdir+.
966 rb_define_const(cHttpParser, "LENGTH_MAX", OFFT2NUM(UH_OFF_T_MAX));
968 rb_define_singleton_method(cHttpParser, "max_header_len=", set_maxhdrlen, 1);
970 init_common_fields(mark_ary);
971 SET_GLOBAL(g_http_host, "HOST");
972 SET_GLOBAL(g_http_trailer, "TRAILER");
973 SET_GLOBAL(g_http_transfer_encoding, "TRANSFER_ENCODING");
974 SET_GLOBAL(g_content_length, "CONTENT_LENGTH");
975 SET_GLOBAL(g_http_connection, "CONNECTION");
976 id_set_backtrace = rb_intern("set_backtrace");
977 init_unicorn_httpdate(mark_ary);
979 OBJ_FREEZE(mark_ary);
981 #ifndef HAVE_RB_HASH_CLEAR
982 id_clear = rb_intern("clear");