15 static int request_check_hostname(buffer
*host
) {
16 enum { DOMAINLABEL
, TOPLABEL
} stage
= TOPLABEL
;
19 size_t host_len
, hostport_len
;
21 int is_ip
= -1; /* -1 don't know yet, 0 no, 1 yes */
25 * hostport = host [ ":" port ]
26 * host = hostname | IPv4address | IPv6address
27 * hostname = *( domainlabel "." ) toplabel [ "." ]
28 * domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
29 * toplabel = alpha | alpha *( alphanum | "-" ) alphanum
30 * IPv4address = 1*digit "." 1*digit "." 1*digit "." 1*digit
31 * IPv6address = "[" ... "]"
36 if (host
->ptr
[0] == '[') {
37 char *c
= host
->ptr
+ 1;
40 /* check the address inside [...] */
41 for (; *c
&& *c
!= ']'; c
++) {
43 if (++colon_cnt
> 7) {
46 } else if (!light_isxdigit(*c
) && '.' != *c
) {
58 for (c
+= 2; *c
; c
++) {
59 if (!light_isdigit(*c
)) {
64 else if ('\0' != *(c
+1)) {
65 /* only a port is allowed to follow [...] */
71 hostport_len
= host_len
= buffer_string_length(host
);
73 if (NULL
!= (colon
= memchr(host
->ptr
, ':', host_len
))) {
76 /* check portnumber */
78 if (!light_isdigit(*c
)) return -1;
81 /* remove the port from the host-len */
82 host_len
= colon
- host
->ptr
;
86 if (host_len
== 0) return -1;
88 /* if the hostname ends in a "." strip it */
89 if (host
->ptr
[host_len
-1] == '.') {
90 /* shift port info one left */
91 if (NULL
!= colon
) memmove(colon
-1, colon
, hostport_len
- host_len
);
92 buffer_string_set_length(host
, --hostport_len
);
93 if (--host_len
== 0) return -1;
97 /* scan from the right and skip the \0 */
98 for (i
= host_len
; i
-- > 0; ) {
99 const char c
= host
->ptr
[i
];
104 /* only switch stage, if this is not the last character */
105 if (i
!= host_len
- 1) {
106 if (label_len
== 0) {
110 /* check the first character at right of the dot */
112 if (!light_isalnum(host
->ptr
[i
+1])) {
115 } else if (!light_isdigit(host
->ptr
[i
+1])) {
117 } else if ('-' == host
->ptr
[i
+1]) {
129 /* just a dot and nothing else is evil */
133 /* the first character of the hostname */
134 if (!light_isalnum(c
)) {
139 if (c
!= '-' && !light_isalnum(c
)) {
143 if (!light_isdigit(c
)) is_ip
= 0;
152 if (label_len
== 0) {
158 } else if (!light_isdigit(c
)) {
165 if (label_len
== 0) {
169 /* c is either - or alphanum here */
170 if ('-' == host
->ptr
[i
+1]) {
177 if (!light_isalnum(c
)) {
182 if (c
!= '-' && !light_isalnum(c
)) {
193 /* a IP has to consist of 4 parts */
194 if (is_ip
== 1 && level
!= 3) {
198 if (label_len
== 0) {
205 int http_request_host_normalize(buffer
*b
) {
207 * check for and canonicalize numeric IP address and portnum (optional)
208 * (IP address may be followed by ":portnum" (optional))
211 * - IPv4: 12345678 (32-bit decimal number)
212 * - IPv4: 012345678 (32-bit octal number)
213 * - IPv4: 0x12345678 (32-bit hex number)
215 * allow any chars (except ':' and '\0' and stray '[' or ']')
216 * (other code may check chars more strictly or more pedantically)
217 * ':' delimits (optional) port at end of string
218 * "[]" wraps IPv6 address literal
219 * '\0' should have been rejected earlier were it present
221 * any chars includes, but is not limited to:
222 * - allow '-' any where, even at beginning of word
223 * (security caution: might be confused for cmd flag if passed to shell)
224 * - allow all-digit TLDs
225 * (might be mistaken for IPv4 addr by inet_aton()
226 * unless non-digits appear in subdomain)
229 /* Note: not using getaddrinfo() since it does not support "[]" around IPv6
230 * and is not as lenient as inet_aton() and inet_addr() for IPv4 strings.
231 * Not using inet_pton() (when available) on IPv4 for similar reasons. */
233 const char * const p
= b
->ptr
;
234 const size_t blen
= buffer_string_length(b
);
238 char * const colon
= (char *)memchr(p
, ':', blen
);
240 if (*p
== ':') return -1; /*(empty host then port, or naked IPv6)*/
241 if (colon
[1] != '\0') {
243 port
= strtol(colon
+1, &e
, 0); /*(allow decimal, octal, hex)*/
244 if (0 < port
&& port
<= USHRT_MAX
&& *e
== '\0') {
249 } /*(else ignore stray colon at string end)*/
250 buffer_string_set_length(b
, (size_t)(colon
- p
)); /*(remove port str)*/
253 if (light_isdigit(*p
)) {
254 /* (IPv4 address literal or domain starting w/ digit (e.g. 3com))*/
256 #if defined(HAVE_INET_ATON) /*(Windows does not provide inet_aton())*/
257 if (0 != inet_aton(p
, &addr
))
259 if ((addr
.s_addr
= inet_addr(p
)) != INADDR_NONE
)
262 #if defined(HAVE_INET_PTON)/*(expect inet_ntop() if inet_pton())*/
263 #ifndef INET_ADDRSTRLEN
264 #define INET_ADDRSTRLEN 16
266 char buf
[INET_ADDRSTRLEN
];
267 inet_ntop(AF_INET
, (const void *)&addr
, buf
, sizeof(buf
));
268 buffer_copy_string(b
, buf
);
270 buffer_copy_string(b
, inet_ntoa(addr
)); /*(not thread-safe)*/
274 } else { /* IPv6 addr */
275 #if defined(HAVE_IPV6) && defined(HAVE_INET_PTON)
277 struct in6_addr addr
;
278 char *bracket
= b
->ptr
+blen
-1;
280 char buf
[INET6_ADDRSTRLEN
];
281 if (blen
<= 2) return -1; /*(invalid "[]")*/
282 if (*bracket
!= ']') {
283 bracket
= (char *)memchr(b
->ptr
+1, ']', blen
-1);
284 if (NULL
== bracket
|| bracket
[1] != ':' || bracket
- b
->ptr
== 1){
287 if (bracket
[2] != '\0') { /*(ignore stray colon at string end)*/
289 port
= strtol(bracket
+2, &e
, 0); /*(allow decimal, octal, hex)*/
290 if (0 < port
&& port
<= USHRT_MAX
&& *e
== '\0') {
298 *bracket
= '\0';/*(terminate IPv6 string)*/
299 rc
= inet_pton(AF_INET6
, b
->ptr
+1, &addr
);
300 *bracket
= ']'; /*(restore bracket)*/
301 if (1 != rc
) return -1;
303 inet_ntop(AF_INET6
,(const void *)&addr
, buf
, sizeof(buf
));
304 buffer_string_set_length(b
, 1); /* truncate after '[' */
305 buffer_append_string(b
, buf
);
306 buffer_append_string_len(b
, CONST_STR_LEN("]"));
316 buffer_append_string_len(b
, CONST_STR_LEN(":"));
317 buffer_append_int(b
, (int)port
);
327 static int http_request_split_value(array
*vals
, buffer
*b
) {
332 const char *token_start
= NULL
, *token_end
= NULL
;
336 * val1, val2, val3, val4
338 * into a array (more or less a explode() incl. striping of whitespaces
341 if (buffer_string_is_empty(b
)) return 0;
344 len
= buffer_string_length(b
);
345 for (i
= 0; i
<= len
; ++i
, ++current
) {
349 case 0: /* find start of a token */
352 case '\t': /* skip white space */
353 case ',': /* skip empty token */
355 case '\0': /* end of string */
358 /* found real data, switch to state 1 to find the end of the token */
359 token_start
= token_end
= current
;
364 case 1: /* find end of token and last non white space character */
368 /* space - don't update token_end */
371 case '\0': /* end of string also marks the end of a token */
372 if (NULL
== (ds
= (data_string
*)array_get_unused_element(vals
, TYPE_STRING
))) {
373 ds
= data_string_init();
376 buffer_copy_string_len(ds
->value
, token_start
, token_end
-token_start
+1);
377 array_insert_unique(vals
, (data_unset
*)ds
);
382 /* no white space, update token_end to include current character */
393 static int request_uri_is_valid_char(unsigned char c
) {
394 if (c
<= 32) return 0;
395 if (c
== 127) return 0;
396 if (c
== 255) return 0;
401 int http_request_parse(server
*srv
, connection
*con
) {
402 char *uri
= NULL
, *proto
= NULL
, *method
= NULL
, con_length_set
;
403 int is_key
= 1, key_len
= 0, is_ws_after_key
= 0, in_folding
;
404 char *value
= NULL
, *key
= NULL
;
405 char *reqline_host
= NULL
;
406 int reqline_hostlen
= 0;
408 enum { HTTP_CONNECTION_UNSET
, HTTP_CONNECTION_KEEPALIVE
, HTTP_CONNECTION_CLOSE
} keep_alive_set
= HTTP_CONNECTION_UNSET
;
412 int request_line_stage
= 0;
413 size_t i
, first
, ilen
;
416 const unsigned int http_header_strict
= (con
->conf
.http_parseopts
& HTTP_PARSEOPT_HEADER_STRICT
);
419 * Request: "^(GET|POST|HEAD) ([^ ]+(\\?[^ ]+|)) (HTTP/1\\.[01])$"
420 * Option : "^([-a-zA-Z]+): (.+)$"
424 if (con
->conf
.log_request_header
) {
425 log_error_write(srv
, __FILE__
, __LINE__
, "sdsdSb",
427 "request-len:", buffer_string_length(con
->request
.request
),
428 "\n", con
->request
.request
);
431 if (con
->request_count
> 1 &&
432 con
->request
.request
->ptr
[0] == '\r' &&
433 con
->request
.request
->ptr
[1] == '\n') {
434 /* we are in keep-alive and might get \r\n after a previous POST request.*/
436 buffer_copy_string_len(con
->parse_request
, con
->request
.request
->ptr
+ 2, buffer_string_length(con
->request
.request
) - 2);
438 /* fill the local request buffer */
439 buffer_copy_buffer(con
->parse_request
, con
->request
.request
);
445 /* parse the first line of the request
449 * <method> <uri> <protocol>\r\n
451 ilen
= buffer_string_length(con
->parse_request
);
452 for (i
= 0, first
= 0; i
< ilen
&& line
== 0; i
++) {
453 switch(con
->parse_request
->ptr
[i
]) {
455 if (con
->parse_request
->ptr
[i
+1] == '\n') {
461 con
->parse_request
->ptr
[i
] = '\0';
462 con
->parse_request
->ptr
[i
+1] = '\0';
464 buffer_copy_string_len(con
->request
.request_line
, con
->parse_request
->ptr
, i
);
466 if (request_line_stage
!= 2) {
467 con
->http_status
= 400;
468 con
->response
.keep_alive
= 0;
471 if (srv
->srvconf
.log_request_header_on_error
) {
472 log_error_write(srv
, __FILE__
, __LINE__
, "s", "incomplete request line -> 400");
473 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
475 con
->request
.request
);
480 proto
= con
->parse_request
->ptr
+ first
;
485 /* we got the first one :) */
486 if (HTTP_METHOD_UNSET
== (r
= get_http_method_key(method
))) {
487 con
->http_status
= 501;
488 con
->response
.keep_alive
= 0;
491 if (srv
->srvconf
.log_request_header_on_error
) {
492 log_error_write(srv
, __FILE__
, __LINE__
, "s", "unknown http-method -> 501");
493 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
495 con
->request
.request
);
501 con
->request
.http_method
= r
;
506 * HTTP-Version = "HTTP" "/" 1*DIGIT "." 1*DIGIT
509 if (0 == strncmp(proto
, "HTTP/", sizeof("HTTP/") - 1)) {
510 char * major
= proto
+ sizeof("HTTP/") - 1;
511 char * minor
= strchr(major
, '.');
513 int major_num
= 0, minor_num
= 0;
515 int invalid_version
= 0;
517 if (NULL
== minor
|| /* no dot */
518 minor
== major
|| /* no major */
519 *(minor
+ 1) == '\0' /* no minor */) {
523 major_num
= strtol(major
, &err
, 10);
525 if (*err
!= '\0') invalid_version
= 1;
528 minor_num
= strtol(minor
, &err
, 10);
530 if (*err
!= '\0') invalid_version
= 1;
533 if (invalid_version
) {
534 con
->http_status
= 400;
537 if (srv
->srvconf
.log_request_header_on_error
) {
538 log_error_write(srv
, __FILE__
, __LINE__
, "s", "unknown protocol -> 400");
539 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
541 con
->request
.request
);
546 if (major_num
== 1 && minor_num
== 1) {
547 con
->request
.http_version
= con
->conf
.allow_http11
? HTTP_VERSION_1_1
: HTTP_VERSION_1_0
;
548 } else if (major_num
== 1 && minor_num
== 0) {
549 con
->request
.http_version
= HTTP_VERSION_1_0
;
551 con
->http_status
= 505;
553 if (srv
->srvconf
.log_request_header_on_error
) {
554 log_error_write(srv
, __FILE__
, __LINE__
, "s", "unknown HTTP version -> 505");
555 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
557 con
->request
.request
);
562 con
->http_status
= 400;
565 if (srv
->srvconf
.log_request_header_on_error
) {
566 log_error_write(srv
, __FILE__
, __LINE__
, "s", "unknown protocol -> 400");
567 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
569 con
->request
.request
);
574 if (0 == strncmp(uri
, "http://", 7) &&
575 NULL
!= (nuri
= strchr(uri
+ 7, '/'))) {
576 reqline_host
= uri
+ 7;
577 reqline_hostlen
= nuri
- reqline_host
;
579 buffer_copy_string_len(con
->request
.uri
, nuri
, proto
- nuri
- 1);
580 } else if (0 == strncmp(uri
, "https://", 8) &&
581 NULL
!= (nuri
= strchr(uri
+ 8, '/'))) {
582 reqline_host
= uri
+ 8;
583 reqline_hostlen
= nuri
- reqline_host
;
585 buffer_copy_string_len(con
->request
.uri
, nuri
, proto
- nuri
- 1);
587 /* everything looks good so far */
588 buffer_copy_string_len(con
->request
.uri
, uri
, proto
- uri
- 1);
591 /* check uri for invalid characters */
592 jlen
= buffer_string_length(con
->request
.uri
);
593 if (http_header_strict
) {
594 for (j
= 0; j
< jlen
&& request_uri_is_valid_char(con
->request
.uri
->ptr
[j
]); j
++) ;
596 char *z
= memchr(con
->request
.uri
->ptr
, '\0', jlen
);
597 j
= (NULL
== z
) ? jlen
: (size_t)(z
- con
->request
.uri
->ptr
);
600 con
->http_status
= 400;
603 if (srv
->srvconf
.log_request_header_on_error
) {
604 unsigned char buf
[2];
605 buf
[0] = con
->request
.uri
->ptr
[j
];
608 if (con
->request
.uri
->ptr
[j
] > 32 &&
609 con
->request
.uri
->ptr
[j
] != 127) {
610 /* the character is printable -> print it */
611 log_error_write(srv
, __FILE__
, __LINE__
, "ss",
612 "invalid character in URI -> 400",
615 /* a control-character, print ascii-code */
616 log_error_write(srv
, __FILE__
, __LINE__
, "sd",
617 "invalid character in URI -> 400",
618 con
->request
.uri
->ptr
[j
]);
621 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
623 con
->request
.request
);
629 buffer_copy_buffer(con
->request
.orig_uri
, con
->request
.uri
);
631 con
->http_status
= 0;
639 switch(request_line_stage
) {
642 method
= con
->parse_request
->ptr
+ first
;
647 uri
= con
->parse_request
->ptr
+ first
;
651 /* ERROR, one space to much */
652 con
->http_status
= 400;
653 con
->response
.keep_alive
= 0;
656 if (srv
->srvconf
.log_request_header_on_error
) {
657 log_error_write(srv
, __FILE__
, __LINE__
, "s", "overlong request line -> 400");
658 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
660 con
->request
.request
);
665 request_line_stage
++;
672 if (buffer_string_is_empty(con
->request
.uri
)) {
673 con
->http_status
= 400;
674 con
->response
.keep_alive
= 0;
677 if (srv
->srvconf
.log_request_header_on_error
) {
678 log_error_write(srv
, __FILE__
, __LINE__
, "s", "no uri specified -> 400");
679 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
681 con
->request
.request
);
687 /* Insert as host header */
690 if (NULL
== (ds
= (data_string
*)array_get_unused_element(con
->request
.headers
, TYPE_STRING
))) {
691 ds
= data_string_init();
694 buffer_copy_string_len(ds
->key
, CONST_STR_LEN("Host"));
695 buffer_copy_string_len(ds
->value
, reqline_host
, reqline_hostlen
);
696 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
697 con
->request
.http_host
= ds
->value
;
700 for (; i
<= ilen
&& !done
; i
++) {
701 char *cur
= con
->parse_request
->ptr
+ i
;
708 * 1*<any CHAR except CTLs or separators>
709 * CTLs == 0-31 + 127, CHAR = 7-bit ascii (0..127)
718 if (is_ws_after_key
== 0) {
740 con
->http_status
= 400;
742 con
->response
.keep_alive
= 0;
744 if (srv
->srvconf
.log_request_header_on_error
) {
745 log_error_write(srv
, __FILE__
, __LINE__
, "sbsds",
746 "invalid character in key", con
->request
.request
, cur
, *cur
, "-> 400");
748 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
750 con
->request
.request
);
766 /* skip every thing up to the : */
767 for (j
= 1; !got_colon
; j
++) {
768 switch(con
->parse_request
->ptr
[j
+ i
]) {
774 /* ok, done; handle the colon the usual way */
778 is_ws_after_key
= 1; /* we already know the key length */
784 if (srv
->srvconf
.log_request_header_on_error
) {
785 log_error_write(srv
, __FILE__
, __LINE__
, "s", "WS character in key -> 400");
786 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
788 con
->request
.request
);
791 con
->http_status
= 400;
792 con
->response
.keep_alive
= 0;
801 if (con
->parse_request
->ptr
[i
+1] == '\n' && i
== first
) {
803 con
->parse_request
->ptr
[i
] = '\0';
804 con
->parse_request
->ptr
[i
+1] = '\0';
810 if (srv
->srvconf
.log_request_header_on_error
) {
811 log_error_write(srv
, __FILE__
, __LINE__
, "s", "CR without LF -> 400");
812 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
814 con
->request
.request
);
817 con
->http_status
= 400;
819 con
->response
.keep_alive
= 0;
824 if (http_header_strict
? (*cur
< 32 || ((unsigned char)*cur
) >= 127) : *cur
== '\0') {
825 con
->http_status
= 400;
827 con
->response
.keep_alive
= 0;
829 if (srv
->srvconf
.log_request_header_on_error
) {
830 log_error_write(srv
, __FILE__
, __LINE__
, "sbsds",
831 "invalid character in key", con
->request
.request
, cur
, *cur
, "-> 400");
833 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
835 con
->request
.request
);
846 if (con
->parse_request
->ptr
[i
+1] == '\n') {
847 data_string
*ds
= NULL
;
849 /* End of Headerline */
850 con
->parse_request
->ptr
[i
] = '\0';
851 con
->parse_request
->ptr
[i
+1] = '\0';
856 * we use a evil hack to handle the line-folding
858 * As array_insert_unique() deletes 'ds' in the case of a duplicate
859 * ds points somewhere and we get a evil crash. As a solution we keep the old
860 * "key" and get the current value from the hash and append us
864 if (!key
|| !key_len
) {
867 if (srv
->srvconf
.log_request_header_on_error
) {
868 log_error_write(srv
, __FILE__
, __LINE__
, "s", "WS at the start of first line -> 400");
870 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
872 con
->request
.request
);
876 con
->http_status
= 400;
878 con
->response
.keep_alive
= 0;
882 key_b
= buffer_init();
883 buffer_copy_string_len(key_b
, key
, key_len
);
885 if (NULL
!= (ds
= (data_string
*)array_get_element(con
->request
.headers
, key_b
->ptr
))) {
886 buffer_append_string(ds
->value
, value
);
892 key
= con
->parse_request
->ptr
+ first
;
896 /* strip trailing white-spaces */
898 (value
[s_len
- 1] == ' ' ||
899 value
[s_len
- 1] == '\t'); s_len
--);
905 if (NULL
== (ds
= (data_string
*)array_get_unused_element(con
->request
.headers
, TYPE_STRING
))) {
906 ds
= data_string_init();
908 buffer_copy_string_len(ds
->key
, key
, key_len
);
909 buffer_copy_string_len(ds
->value
, value
, s_len
);
914 * the list of options is sorted to simplify the search
917 if (0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("Connection")))) {
923 vals
= srv
->split_vals
;
927 http_request_split_value(vals
, ds
->value
);
929 for (vi
= 0; vi
< vals
->used
; vi
++) {
930 data_string
*dsv
= (data_string
*)vals
->data
[vi
];
932 if (0 == buffer_caseless_compare(CONST_BUF_LEN(dsv
->value
), CONST_STR_LEN("keep-alive"))) {
933 keep_alive_set
= HTTP_CONNECTION_KEEPALIVE
;
936 } else if (0 == buffer_caseless_compare(CONST_BUF_LEN(dsv
->value
), CONST_STR_LEN("close"))) {
937 keep_alive_set
= HTTP_CONNECTION_CLOSE
;
943 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("Content-Length")))) {
948 if (con_length_set
) {
949 con
->http_status
= 400;
952 if (srv
->srvconf
.log_request_header_on_error
) {
953 log_error_write(srv
, __FILE__
, __LINE__
, "s",
954 "duplicate Content-Length-header -> 400");
955 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
957 con
->request
.request
);
959 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
963 jlen
= buffer_string_length(ds
->value
);
964 for (j
= 0; j
< jlen
; j
++) {
965 char c
= ds
->value
->ptr
[j
];
966 if (!isdigit((unsigned char)c
)) {
967 log_error_write(srv
, __FILE__
, __LINE__
, "sbs",
968 "content-length broken:", ds
->value
, "-> 400");
970 con
->http_status
= 400;
973 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
978 r
= strtoul(ds
->value
->ptr
, &err
, 10);
982 con
->request
.content_length
= r
;
984 log_error_write(srv
, __FILE__
, __LINE__
, "sbs",
985 "content-length broken:", ds
->value
, "-> 400");
987 con
->http_status
= 400;
990 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
993 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("Content-Type")))) {
994 /* if dup, only the first one will survive */
995 if (!con
->request
.http_content_type
) {
996 con
->request
.http_content_type
= ds
->value
->ptr
;
998 con
->http_status
= 400;
1001 if (srv
->srvconf
.log_request_header_on_error
) {
1002 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1003 "duplicate Content-Type-header -> 400");
1004 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
1005 "request-header:\n",
1006 con
->request
.request
);
1008 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
1011 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("Expect")))) {
1013 * Expect: 100-continue
1015 * -> (10.1.1) 100 (read content, process request, send final status-code)
1016 * -> (10.4.18) 417 (close)
1018 * (not handled at all yet, we always send 417 here)
1020 * What has to be added ?
1021 * 1. handling of chunked request body
1022 * 2. out-of-order sending from the HTTP/1.1 100 Continue
1027 if (srv
->srvconf
.reject_expect_100_with_417
&& 0 == buffer_caseless_compare(CONST_BUF_LEN(ds
->value
), CONST_STR_LEN("100-continue"))) {
1028 con
->http_status
= 417;
1029 con
->keep_alive
= 0;
1030 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
1033 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("Host")))) {
1035 /* ignore all host: headers as we got the host in the request line */
1036 ds
->free((data_unset
*) ds
);
1038 } else if (!con
->request
.http_host
) {
1039 con
->request
.http_host
= ds
->value
;
1041 con
->http_status
= 400;
1042 con
->keep_alive
= 0;
1044 if (srv
->srvconf
.log_request_header_on_error
) {
1045 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1046 "duplicate Host-header -> 400");
1047 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
1048 "request-header:\n",
1049 con
->request
.request
);
1051 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
1054 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("If-Modified-Since")))) {
1055 /* Proxies sometimes send dup headers
1056 * if they are the same we ignore the second
1057 * if not, we raise an error */
1058 if (!con
->request
.http_if_modified_since
) {
1059 con
->request
.http_if_modified_since
= ds
->value
->ptr
;
1060 } else if (0 == strcasecmp(con
->request
.http_if_modified_since
,
1062 /* ignore it if they are the same */
1064 ds
->free((data_unset
*)ds
);
1067 con
->http_status
= 400;
1068 con
->keep_alive
= 0;
1070 if (srv
->srvconf
.log_request_header_on_error
) {
1071 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1072 "duplicate If-Modified-Since header -> 400");
1073 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
1074 "request-header:\n",
1075 con
->request
.request
);
1077 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
1080 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("If-None-Match")))) {
1081 /* if dup, only the first one will survive */
1082 if (!con
->request
.http_if_none_match
) {
1083 con
->request
.http_if_none_match
= ds
->value
->ptr
;
1085 ds
->free((data_unset
*) ds
);
1088 } else if (cmp
> 0 && 0 == (cmp
= buffer_caseless_compare(CONST_BUF_LEN(ds
->key
), CONST_STR_LEN("Range")))) {
1089 if (!con
->request
.http_range
) {
1092 if (0 == strncasecmp(ds
->value
->ptr
, "bytes=", 6) &&
1093 NULL
!= strchr(ds
->value
->ptr
+6, '-')) {
1095 /* if dup, only the first one will survive */
1096 con
->request
.http_range
= ds
->value
->ptr
+ 6;
1099 con
->http_status
= 400;
1100 con
->keep_alive
= 0;
1102 if (srv
->srvconf
.log_request_header_on_error
) {
1103 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1104 "duplicate Range-header -> 400");
1105 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
1106 "request-header:\n",
1107 con
->request
.request
);
1109 array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
1114 if (ds
) array_insert_unique(con
->request
.headers
, (data_unset
*)ds
);
1116 /* empty header-fields are not allowed by HTTP-RFC, we just ignore them */
1126 * for Bug 1230 keep the key_len a live
1132 if (srv
->srvconf
.log_request_header_on_error
) {
1133 log_error_write(srv
, __FILE__
, __LINE__
, "sbs",
1134 "CR without LF", con
->request
.request
, "-> 400");
1137 con
->http_status
= 400;
1138 con
->keep_alive
= 0;
1139 con
->response
.keep_alive
= 0;
1145 /* strip leading WS */
1146 if (value
== cur
) value
= cur
+1;
1149 if (http_header_strict
? (*cur
>= 0 && *cur
< 32) : *cur
== '\0') {
1150 if (srv
->srvconf
.log_request_header_on_error
) {
1151 log_error_write(srv
, __FILE__
, __LINE__
, "sds",
1152 "invalid char in header", (int)*cur
, "-> 400");
1155 con
->http_status
= 400;
1156 con
->keep_alive
= 0;
1165 con
->header_len
= i
;
1167 /* do some post-processing */
1169 if (con
->request
.http_version
== HTTP_VERSION_1_1
) {
1170 if (keep_alive_set
!= HTTP_CONNECTION_CLOSE
) {
1171 /* no Connection-Header sent */
1173 /* HTTP/1.1 -> keep-alive default TRUE */
1174 con
->keep_alive
= 1;
1176 con
->keep_alive
= 0;
1179 /* RFC 2616, 14.23 */
1180 if (con
->request
.http_host
== NULL
||
1181 buffer_string_is_empty(con
->request
.http_host
)) {
1182 con
->http_status
= 400;
1183 con
->response
.keep_alive
= 0;
1184 con
->keep_alive
= 0;
1186 if (srv
->srvconf
.log_request_header_on_error
) {
1187 log_error_write(srv
, __FILE__
, __LINE__
, "s", "HTTP/1.1 but Host missing -> 400");
1188 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
1189 "request-header:\n",
1190 con
->request
.request
);
1195 if (keep_alive_set
== HTTP_CONNECTION_KEEPALIVE
) {
1196 /* no Connection-Header sent */
1198 /* HTTP/1.0 -> keep-alive default FALSE */
1199 con
->keep_alive
= 1;
1201 con
->keep_alive
= 0;
1205 /* check hostname field if it is set */
1206 if (!buffer_is_empty(con
->request
.http_host
) &&
1207 (((con
->conf
.http_parseopts
& HTTP_PARSEOPT_HOST_STRICT
) &&
1208 0 != request_check_hostname(con
->request
.http_host
))
1209 || ((con
->conf
.http_parseopts
& HTTP_PARSEOPT_HOST_NORMALIZE
) &&
1210 0 != http_request_host_normalize(con
->request
.http_host
)))) {
1212 if (srv
->srvconf
.log_request_header_on_error
) {
1213 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1214 "Invalid Hostname -> 400");
1215 log_error_write(srv
, __FILE__
, __LINE__
, "Sb",
1216 "request-header:\n",
1217 con
->request
.request
);
1220 con
->http_status
= 400;
1221 con
->response
.keep_alive
= 0;
1222 con
->keep_alive
= 0;
1227 switch(con
->request
.http_method
) {
1228 case HTTP_METHOD_GET
:
1229 case HTTP_METHOD_HEAD
:
1230 /* content-length is forbidden for those */
1231 if (con_length_set
&& con
->request
.content_length
!= 0) {
1232 /* content-length is missing */
1233 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1234 "GET/HEAD with content-length -> 400");
1236 con
->keep_alive
= 0;
1237 con
->http_status
= 400;
1241 case HTTP_METHOD_POST
:
1242 /* content-length is required for them */
1243 if (!con_length_set
) {
1244 /* content-length is missing */
1245 log_error_write(srv
, __FILE__
, __LINE__
, "s",
1246 "POST-request, but content-length missing -> 411");
1248 con
->keep_alive
= 0;
1249 con
->http_status
= 411;
1255 /* require Content-Length if request contains request body */
1256 if (array_get_element(con
->request
.headers
, "Transfer-Encoding")) {
1257 /* presence of Transfer-Encoding in request headers requires "chunked"
1258 * be final encoding in HTTP/1.1. Return 411 Length Required as
1259 * lighttpd does not support request input transfer-encodings */
1260 con
->keep_alive
= 0;
1261 con
->http_status
= 411; /* 411 Length Required */
1268 /* check if we have read post data */
1269 if (con_length_set
) {
1270 /* don't handle more the SSIZE_MAX bytes in content-length */
1271 if (con
->request
.content_length
> SSIZE_MAX
) {
1272 con
->http_status
= 413;
1273 con
->keep_alive
= 0;
1275 log_error_write(srv
, __FILE__
, __LINE__
, "sos",
1276 "request-size too long:", (off_t
) con
->request
.content_length
, "-> 413");
1280 /* srvconf.max_request_size is in kBytes */
1281 if (srv
->srvconf
.max_request_size
!= 0 &&
1282 (off_t
)con
->request
.content_length
> ((off_t
)srv
->srvconf
.max_request_size
<< 10)) {
1283 /* the request body itself is larger then
1284 * our our max_request_size
1287 con
->http_status
= 413;
1288 con
->keep_alive
= 0;
1290 log_error_write(srv
, __FILE__
, __LINE__
, "sos",
1291 "request-size too long:", (off_t
) con
->request
.content_length
, "-> 413");
1296 /* we have content */
1297 if (con
->request
.content_length
!= 0) {
1305 int http_request_header_finished(server
*srv
, connection
*con
) {
1308 if (buffer_string_length(con
->request
.request
) < 4) return 0;
1310 if (0 == memcmp(con
->request
.request
->ptr
+ buffer_string_length(con
->request
.request
) - 4, CONST_STR_LEN("\r\n\r\n"))) return 1;
1311 if (NULL
!= strstr(con
->request
.request
->ptr
, "\r\n\r\n")) return 1;