xref: /unit/src/nxt_http_parse.c (revision 409)
116Svbart@nginx.com 
216Svbart@nginx.com /*
316Svbart@nginx.com  * Copyright (C) NGINX, Inc.
416Svbart@nginx.com  * Copyright (C) Valentin V. Bartenev
516Svbart@nginx.com  */
616Svbart@nginx.com 
716Svbart@nginx.com #include <nxt_main.h>
816Svbart@nginx.com 
916Svbart@nginx.com 
1016Svbart@nginx.com typedef struct {
1167Svbart@nginx.com     nxt_http_field_handler_t    handler;
1267Svbart@nginx.com     uintptr_t                   data;
1360Svbart@nginx.com 
1416Svbart@nginx.com     union {
1567Svbart@nginx.com         uint8_t                 str[8];
1667Svbart@nginx.com         uint64_t                ui64;
1716Svbart@nginx.com     } key[];
1860Svbart@nginx.com } nxt_http_fields_hash_elt_t;
1916Svbart@nginx.com 
2016Svbart@nginx.com 
2116Svbart@nginx.com struct nxt_http_fields_hash_s {
2267Svbart@nginx.com     size_t                      min_length;
2367Svbart@nginx.com     size_t                      max_length;
2467Svbart@nginx.com     void                        *long_fields;
2567Svbart@nginx.com     nxt_http_fields_hash_elt_t  *elts[];
2616Svbart@nginx.com };
2716Svbart@nginx.com 
2816Svbart@nginx.com 
2960Svbart@nginx.com #define nxt_http_fields_hash_next_elt(elt, n)                                 \
3060Svbart@nginx.com     ((nxt_http_fields_hash_elt_t *) ((u_char *) (elt)                         \
3160Svbart@nginx.com                                      + sizeof(nxt_http_fields_hash_elt_t)     \
3260Svbart@nginx.com                                      + n * 8))
3360Svbart@nginx.com 
3460Svbart@nginx.com 
3516Svbart@nginx.com static nxt_int_t nxt_http_parse_unusual_target(nxt_http_request_parse_t *rp,
3616Svbart@nginx.com     u_char **pos, u_char *end);
3716Svbart@nginx.com static nxt_int_t nxt_http_parse_request_line(nxt_http_request_parse_t *rp,
3816Svbart@nginx.com     u_char **pos, u_char *end);
3916Svbart@nginx.com static nxt_int_t nxt_http_parse_field_name(nxt_http_request_parse_t *rp,
4016Svbart@nginx.com     u_char **pos, u_char *end);
4116Svbart@nginx.com static nxt_int_t nxt_http_parse_field_value(nxt_http_request_parse_t *rp,
4216Svbart@nginx.com     u_char **pos, u_char *end);
4316Svbart@nginx.com static u_char *nxt_http_lookup_field_end(u_char *p, u_char *end);
4416Svbart@nginx.com static nxt_int_t nxt_http_parse_field_end(nxt_http_request_parse_t *rp,
4516Svbart@nginx.com     u_char **pos, u_char *end);
4616Svbart@nginx.com 
4767Svbart@nginx.com static void nxt_http_fields_hash_lookup(nxt_http_fields_hash_t *hash,
4867Svbart@nginx.com     uint64_t key[4], nxt_http_field_t *field);
4967Svbart@nginx.com static void nxt_http_fields_hash_lookup_long(nxt_http_fields_hash_t *hash,
5067Svbart@nginx.com     nxt_http_field_t *field);
5116Svbart@nginx.com 
52112Smax.romanov@nginx.com static nxt_int_t nxt_http_parse_complex_target(nxt_http_request_parse_t *rp);
53112Smax.romanov@nginx.com 
5416Svbart@nginx.com 
5516Svbart@nginx.com typedef enum {
5616Svbart@nginx.com     NXT_HTTP_TARGET_SPACE = 1,   /* \s  */
5716Svbart@nginx.com     NXT_HTTP_TARGET_HASH,        /*  #  */
5816Svbart@nginx.com     NXT_HTTP_TARGET_AGAIN,
5916Svbart@nginx.com     NXT_HTTP_TARGET_BAD,         /* \0\r\n */
6016Svbart@nginx.com 
6116Svbart@nginx.com     /* traps below are used for extended check only */
6216Svbart@nginx.com 
6316Svbart@nginx.com     NXT_HTTP_TARGET_SLASH = 5,   /*  /  */
6416Svbart@nginx.com     NXT_HTTP_TARGET_DOT,         /*  .  */
6516Svbart@nginx.com     NXT_HTTP_TARGET_ARGS_MARK,   /*  ?  */
6616Svbart@nginx.com     NXT_HTTP_TARGET_QUOTE_MARK,  /*  %  */
6716Svbart@nginx.com     NXT_HTTP_TARGET_PLUS,        /*  +  */
6816Svbart@nginx.com } nxt_http_target_traps_e;
6916Svbart@nginx.com 
7016Svbart@nginx.com 
7116Svbart@nginx.com static const uint8_t  nxt_http_target_chars[256] nxt_aligned(64) = {
7216Svbart@nginx.com     /* \0                               \n        \r       */
7316Svbart@nginx.com         4, 0, 0, 0,  0, 0, 0, 0,   0, 0, 4, 0,  0, 4, 0, 0,
7416Svbart@nginx.com         0, 0, 0, 0,  0, 0, 0, 0,   0, 0, 0, 0,  0, 0, 0, 0,
7552Svbart@nginx.com 
7652Svbart@nginx.com     /* \s  !  "  #   $  %  &  '    (  )  *  +   ,  -  .  / */
7716Svbart@nginx.com         1, 0, 0, 2,  0, 8, 0, 0,   0, 0, 0, 9,  0, 0, 6, 5,
7852Svbart@nginx.com 
7952Svbart@nginx.com     /*  0  1  2  3   4  5  6  7    8  9  :  ;   <  =  >  ? */
8016Svbart@nginx.com         0, 0, 0, 0,  0, 0, 0, 0,   0, 0, 0, 0,  0, 0, 0, 7,
8116Svbart@nginx.com };
8216Svbart@nginx.com 
8316Svbart@nginx.com 
8416Svbart@nginx.com nxt_inline nxt_http_target_traps_e
8516Svbart@nginx.com nxt_http_parse_target(u_char **pos, u_char *end)
8616Svbart@nginx.com {
8716Svbart@nginx.com     u_char      *p;
8816Svbart@nginx.com     nxt_uint_t  trap;
8916Svbart@nginx.com 
9016Svbart@nginx.com     p = *pos;
9116Svbart@nginx.com 
92*409Svbart@nginx.com     while (nxt_fast_path(end - p >= 10)) {
9316Svbart@nginx.com 
94*409Svbart@nginx.com #define nxt_target_test_char(ch)                                              \
95*409Svbart@nginx.com                                                                               \
96*409Svbart@nginx.com         trap = nxt_http_target_chars[ch];                                     \
9716Svbart@nginx.com                                                                               \
98*409Svbart@nginx.com         if (nxt_slow_path(trap != 0)) {                                       \
99*409Svbart@nginx.com             *pos = &(ch);                                                     \
100*409Svbart@nginx.com             return trap;                                                      \
10116Svbart@nginx.com         }
10216Svbart@nginx.com 
103*409Svbart@nginx.com /* enddef */
104*409Svbart@nginx.com 
105*409Svbart@nginx.com         nxt_target_test_char(p[0]);
106*409Svbart@nginx.com         nxt_target_test_char(p[1]);
107*409Svbart@nginx.com         nxt_target_test_char(p[2]);
108*409Svbart@nginx.com         nxt_target_test_char(p[3]);
10916Svbart@nginx.com 
110*409Svbart@nginx.com         nxt_target_test_char(p[4]);
111*409Svbart@nginx.com         nxt_target_test_char(p[5]);
112*409Svbart@nginx.com         nxt_target_test_char(p[6]);
113*409Svbart@nginx.com         nxt_target_test_char(p[7]);
11416Svbart@nginx.com 
115*409Svbart@nginx.com         nxt_target_test_char(p[8]);
116*409Svbart@nginx.com         nxt_target_test_char(p[9]);
11716Svbart@nginx.com 
118*409Svbart@nginx.com         p += 10;
11916Svbart@nginx.com     }
12016Svbart@nginx.com 
121*409Svbart@nginx.com     return NXT_HTTP_TARGET_AGAIN;
12216Svbart@nginx.com }
12316Svbart@nginx.com 
12416Svbart@nginx.com 
12516Svbart@nginx.com nxt_int_t
12616Svbart@nginx.com nxt_http_parse_request(nxt_http_request_parse_t *rp, nxt_buf_mem_t *b)
12716Svbart@nginx.com {
12816Svbart@nginx.com     nxt_int_t  rc;
12916Svbart@nginx.com 
13016Svbart@nginx.com     if (rp->handler == NULL) {
13116Svbart@nginx.com         rp->handler = &nxt_http_parse_request_line;
13216Svbart@nginx.com     }
13316Svbart@nginx.com 
13416Svbart@nginx.com     do {
13516Svbart@nginx.com         rc = rp->handler(rp, &b->pos, b->free);
13616Svbart@nginx.com     } while (rc == NXT_OK);
13716Svbart@nginx.com 
13816Svbart@nginx.com     return rc;
13916Svbart@nginx.com }
14016Svbart@nginx.com 
14116Svbart@nginx.com 
14216Svbart@nginx.com static nxt_int_t
14316Svbart@nginx.com nxt_http_parse_request_line(nxt_http_request_parse_t *rp, u_char **pos,
14416Svbart@nginx.com     u_char *end)
14516Svbart@nginx.com {
14616Svbart@nginx.com     u_char                   *p, ch, *after_slash;
14716Svbart@nginx.com     nxt_int_t                rc;
14816Svbart@nginx.com     nxt_http_ver_t           version;
14916Svbart@nginx.com     nxt_http_target_traps_e  trap;
15016Svbart@nginx.com 
15116Svbart@nginx.com     static const nxt_http_ver_t  http11 = { "HTTP/1.1" };
15216Svbart@nginx.com     static const nxt_http_ver_t  http10 = { "HTTP/1.0" };
15316Svbart@nginx.com 
15416Svbart@nginx.com     p = *pos;
15516Svbart@nginx.com 
15616Svbart@nginx.com     rp->method.start = p;
15716Svbart@nginx.com 
158*409Svbart@nginx.com     for ( ;; ) {
159*409Svbart@nginx.com 
160*409Svbart@nginx.com         while (nxt_fast_path(end - p >= 8)) {
16116Svbart@nginx.com 
162*409Svbart@nginx.com #define nxt_method_test_char(ch)                                              \
163*409Svbart@nginx.com                                                                               \
164*409Svbart@nginx.com             if (nxt_slow_path((ch) < 'A' || (ch) > 'Z')) {                    \
165*409Svbart@nginx.com                 p = &(ch);                                                    \
166*409Svbart@nginx.com                 goto method_unusual_char;                                     \
16716Svbart@nginx.com             }
16816Svbart@nginx.com 
169*409Svbart@nginx.com /* enddef */
170*409Svbart@nginx.com 
171*409Svbart@nginx.com             nxt_method_test_char(p[0]);
172*409Svbart@nginx.com             nxt_method_test_char(p[1]);
173*409Svbart@nginx.com             nxt_method_test_char(p[2]);
174*409Svbart@nginx.com             nxt_method_test_char(p[3]);
17516Svbart@nginx.com 
176*409Svbart@nginx.com             nxt_method_test_char(p[4]);
177*409Svbart@nginx.com             nxt_method_test_char(p[5]);
178*409Svbart@nginx.com             nxt_method_test_char(p[6]);
179*409Svbart@nginx.com             nxt_method_test_char(p[7]);
18016Svbart@nginx.com 
181*409Svbart@nginx.com             p += 8;
182*409Svbart@nginx.com         }
18316Svbart@nginx.com 
184*409Svbart@nginx.com         return NXT_AGAIN;
185*409Svbart@nginx.com 
186*409Svbart@nginx.com     method_unusual_char:
187*409Svbart@nginx.com 
188*409Svbart@nginx.com         ch = *p;
18916Svbart@nginx.com 
19016Svbart@nginx.com         if (nxt_fast_path(ch == ' ')) {
19116Svbart@nginx.com             rp->method.length = p - rp->method.start;
19216Svbart@nginx.com             break;
19316Svbart@nginx.com         }
19416Svbart@nginx.com 
19516Svbart@nginx.com         if (ch == '_' || ch == '-') {
196*409Svbart@nginx.com             p++;
19716Svbart@nginx.com             continue;
19816Svbart@nginx.com         }
19916Svbart@nginx.com 
20016Svbart@nginx.com         if (rp->method.start == p && (ch == NXT_CR || ch == NXT_LF)) {
20116Svbart@nginx.com             rp->method.start++;
202*409Svbart@nginx.com             p++;
20316Svbart@nginx.com             continue;
20416Svbart@nginx.com         }
20516Svbart@nginx.com 
20616Svbart@nginx.com         return NXT_ERROR;
20716Svbart@nginx.com     }
20816Svbart@nginx.com 
20916Svbart@nginx.com     p++;
21016Svbart@nginx.com 
21116Svbart@nginx.com     if (nxt_slow_path(p == end)) {
21216Svbart@nginx.com         return NXT_AGAIN;
21316Svbart@nginx.com     }
21416Svbart@nginx.com 
21516Svbart@nginx.com     /* target */
21616Svbart@nginx.com 
21716Svbart@nginx.com     ch = *p;
21816Svbart@nginx.com 
21916Svbart@nginx.com     if (nxt_slow_path(ch != '/')) {
22016Svbart@nginx.com         rc = nxt_http_parse_unusual_target(rp, &p, end);
22116Svbart@nginx.com 
22216Svbart@nginx.com         if (nxt_slow_path(rc != NXT_OK)) {
22316Svbart@nginx.com             return rc;
22416Svbart@nginx.com         }
22516Svbart@nginx.com     }
22616Svbart@nginx.com 
22716Svbart@nginx.com     rp->target_start = p;
22816Svbart@nginx.com 
22916Svbart@nginx.com     after_slash = p + 1;
23016Svbart@nginx.com 
23116Svbart@nginx.com     for ( ;; ) {
23216Svbart@nginx.com         p++;
23316Svbart@nginx.com 
23416Svbart@nginx.com         trap = nxt_http_parse_target(&p, end);
23516Svbart@nginx.com 
23616Svbart@nginx.com         switch (trap) {
23716Svbart@nginx.com         case NXT_HTTP_TARGET_SLASH:
23816Svbart@nginx.com             if (nxt_slow_path(after_slash == p)) {
23916Svbart@nginx.com                 rp->complex_target = 1;
24016Svbart@nginx.com                 goto rest_of_target;
24116Svbart@nginx.com             }
24216Svbart@nginx.com 
24316Svbart@nginx.com             after_slash = p + 1;
24416Svbart@nginx.com 
24516Svbart@nginx.com             rp->exten_start = NULL;
24616Svbart@nginx.com             continue;
24716Svbart@nginx.com 
24816Svbart@nginx.com         case NXT_HTTP_TARGET_DOT:
24916Svbart@nginx.com             if (nxt_slow_path(after_slash == p)) {
25016Svbart@nginx.com                 rp->complex_target = 1;
25116Svbart@nginx.com                 goto rest_of_target;
25216Svbart@nginx.com             }
25316Svbart@nginx.com 
25416Svbart@nginx.com             rp->exten_start = p + 1;
25516Svbart@nginx.com             continue;
25616Svbart@nginx.com 
25716Svbart@nginx.com         case NXT_HTTP_TARGET_ARGS_MARK:
25816Svbart@nginx.com             rp->args_start = p + 1;
25916Svbart@nginx.com             goto rest_of_target;
26016Svbart@nginx.com 
26116Svbart@nginx.com         case NXT_HTTP_TARGET_SPACE:
26216Svbart@nginx.com             rp->target_end = p;
26316Svbart@nginx.com             goto space_after_target;
26416Svbart@nginx.com 
26516Svbart@nginx.com         case NXT_HTTP_TARGET_QUOTE_MARK:
26616Svbart@nginx.com             rp->quoted_target = 1;
26716Svbart@nginx.com             goto rest_of_target;
26816Svbart@nginx.com 
26916Svbart@nginx.com         case NXT_HTTP_TARGET_PLUS:
27016Svbart@nginx.com             rp->plus_in_target = 1;
27116Svbart@nginx.com             continue;
27216Svbart@nginx.com 
27316Svbart@nginx.com         case NXT_HTTP_TARGET_HASH:
27416Svbart@nginx.com             rp->complex_target = 1;
27516Svbart@nginx.com             goto rest_of_target;
27616Svbart@nginx.com 
27716Svbart@nginx.com         case NXT_HTTP_TARGET_AGAIN:
27816Svbart@nginx.com             return NXT_AGAIN;
27916Svbart@nginx.com 
28016Svbart@nginx.com         case NXT_HTTP_TARGET_BAD:
28116Svbart@nginx.com             return NXT_ERROR;
28216Svbart@nginx.com         }
28316Svbart@nginx.com 
28416Svbart@nginx.com         nxt_unreachable();
28516Svbart@nginx.com     }
28616Svbart@nginx.com 
28716Svbart@nginx.com rest_of_target:
28816Svbart@nginx.com 
28916Svbart@nginx.com     for ( ;; ) {
29016Svbart@nginx.com         p++;
29116Svbart@nginx.com 
29219Svbart@nginx.com         trap = nxt_http_parse_target(&p, end);
29316Svbart@nginx.com 
29416Svbart@nginx.com         switch (trap) {
29516Svbart@nginx.com         case NXT_HTTP_TARGET_SPACE:
29616Svbart@nginx.com             rp->target_end = p;
29716Svbart@nginx.com             goto space_after_target;
29816Svbart@nginx.com 
29916Svbart@nginx.com         case NXT_HTTP_TARGET_HASH:
30016Svbart@nginx.com             rp->complex_target = 1;
30116Svbart@nginx.com             continue;
30216Svbart@nginx.com 
30316Svbart@nginx.com         case NXT_HTTP_TARGET_AGAIN:
30416Svbart@nginx.com             return NXT_AGAIN;
30516Svbart@nginx.com 
30616Svbart@nginx.com         case NXT_HTTP_TARGET_BAD:
30716Svbart@nginx.com             return NXT_ERROR;
30816Svbart@nginx.com 
30916Svbart@nginx.com         default:
31016Svbart@nginx.com             continue;
31116Svbart@nginx.com         }
31216Svbart@nginx.com 
31316Svbart@nginx.com         nxt_unreachable();
31416Svbart@nginx.com     }
31516Svbart@nginx.com 
31616Svbart@nginx.com space_after_target:
31716Svbart@nginx.com 
31816Svbart@nginx.com     if (nxt_slow_path(end - p < 10)) {
31916Svbart@nginx.com         return NXT_AGAIN;
32016Svbart@nginx.com     }
32116Svbart@nginx.com 
32216Svbart@nginx.com     /* " HTTP/1.1\r\n" or " HTTP/1.1\n" */
32316Svbart@nginx.com 
32416Svbart@nginx.com     nxt_memcpy(version.str, &p[1], 8);
32516Svbart@nginx.com 
32616Svbart@nginx.com     if (nxt_fast_path((version.ui64 == http11.ui64
32716Svbart@nginx.com                        || version.ui64 == http10.ui64
32816Svbart@nginx.com                        || (p[1] == 'H'
32916Svbart@nginx.com                            && p[2] == 'T'
33016Svbart@nginx.com                            && p[3] == 'T'
33116Svbart@nginx.com                            && p[4] == 'P'
33216Svbart@nginx.com                            && p[5] == '/'
33316Svbart@nginx.com                            && p[6] >= '0' && p[6] <= '9'
33416Svbart@nginx.com                            && p[7] == '.'
33516Svbart@nginx.com                            && p[8] >= '0' && p[8] <= '9'))
33616Svbart@nginx.com                       && (p[9] == '\r' || p[9] == '\n')))
33716Svbart@nginx.com     {
33816Svbart@nginx.com         rp->version.ui64 = version.ui64;
33916Svbart@nginx.com 
34016Svbart@nginx.com         if (nxt_fast_path(p[9] == '\r')) {
34116Svbart@nginx.com             p += 10;
34216Svbart@nginx.com 
34316Svbart@nginx.com             if (nxt_slow_path(p == end)) {
34416Svbart@nginx.com                 return NXT_AGAIN;
34516Svbart@nginx.com             }
34616Svbart@nginx.com 
34716Svbart@nginx.com             if (nxt_slow_path(*p != '\n')) {
34816Svbart@nginx.com                 return NXT_ERROR;
34916Svbart@nginx.com             }
35016Svbart@nginx.com 
35116Svbart@nginx.com             *pos = p + 1;
352112Smax.romanov@nginx.com 
353112Smax.romanov@nginx.com         } else {
354112Smax.romanov@nginx.com             *pos = p + 10;
355112Smax.romanov@nginx.com         }
356112Smax.romanov@nginx.com 
357112Smax.romanov@nginx.com         if (rp->complex_target != 0 || rp->quoted_target != 0) {
358112Smax.romanov@nginx.com             rc = nxt_http_parse_complex_target(rp);
359112Smax.romanov@nginx.com 
360112Smax.romanov@nginx.com             if (nxt_slow_path(rc != NXT_OK)) {
361112Smax.romanov@nginx.com                 return rc;
362112Smax.romanov@nginx.com             }
363112Smax.romanov@nginx.com 
36416Svbart@nginx.com             return nxt_http_parse_field_name(rp, pos, end);
36516Svbart@nginx.com         }
36616Svbart@nginx.com 
367112Smax.romanov@nginx.com         rp->path.start = rp->target_start;
368112Smax.romanov@nginx.com 
369112Smax.romanov@nginx.com         if (rp->args_start != NULL) {
370112Smax.romanov@nginx.com             rp->path.length = rp->args_start - rp->target_start - 1;
371112Smax.romanov@nginx.com 
372112Smax.romanov@nginx.com             rp->args.start = rp->args_start;
373112Smax.romanov@nginx.com             rp->args.length = rp->target_end - rp->args_start;
374112Smax.romanov@nginx.com 
375112Smax.romanov@nginx.com         } else {
376112Smax.romanov@nginx.com             rp->path.length = rp->target_end - rp->target_start;
377112Smax.romanov@nginx.com         }
378112Smax.romanov@nginx.com 
379112Smax.romanov@nginx.com         if (rp->exten_start) {
380112Smax.romanov@nginx.com             rp->exten.length = rp->path.start + rp->path.length -
381112Smax.romanov@nginx.com                                rp->exten_start;
382112Smax.romanov@nginx.com             rp->exten.start = rp->exten_start;
383112Smax.romanov@nginx.com         }
384112Smax.romanov@nginx.com 
38516Svbart@nginx.com         return nxt_http_parse_field_name(rp, pos, end);
38616Svbart@nginx.com     }
38716Svbart@nginx.com 
38816Svbart@nginx.com     if (p[1] == ' ') {
38916Svbart@nginx.com         /* surplus space after tartet */
39016Svbart@nginx.com         p++;
39116Svbart@nginx.com         goto space_after_target;
39216Svbart@nginx.com     }
39316Svbart@nginx.com 
39416Svbart@nginx.com     rp->space_in_target = 1;
39516Svbart@nginx.com     goto rest_of_target;
39616Svbart@nginx.com }
39716Svbart@nginx.com 
39816Svbart@nginx.com 
39916Svbart@nginx.com static nxt_int_t
40016Svbart@nginx.com nxt_http_parse_unusual_target(nxt_http_request_parse_t *rp, u_char **pos,
40116Svbart@nginx.com     u_char *end)
40216Svbart@nginx.com {
40316Svbart@nginx.com     u_char  *p, ch;
40416Svbart@nginx.com 
40516Svbart@nginx.com     p = *pos;
40616Svbart@nginx.com 
40716Svbart@nginx.com     ch = *p;
40816Svbart@nginx.com 
40916Svbart@nginx.com     if (ch == ' ') {
41016Svbart@nginx.com         /* skip surplus spaces before target */
41116Svbart@nginx.com 
41216Svbart@nginx.com         do {
41316Svbart@nginx.com             p++;
41416Svbart@nginx.com 
41516Svbart@nginx.com             if (nxt_slow_path(p == end)) {
41616Svbart@nginx.com                 return NXT_AGAIN;
41716Svbart@nginx.com             }
41816Svbart@nginx.com 
41916Svbart@nginx.com             ch = *p;
42016Svbart@nginx.com 
42116Svbart@nginx.com         } while (ch == ' ');
42216Svbart@nginx.com 
42316Svbart@nginx.com         if (ch == '/') {
42416Svbart@nginx.com             *pos = p;
42516Svbart@nginx.com             return NXT_OK;
42616Svbart@nginx.com         }
42716Svbart@nginx.com     }
42816Svbart@nginx.com 
42916Svbart@nginx.com     /* absolute path or '*' */
43016Svbart@nginx.com 
43116Svbart@nginx.com     /* TODO */
43216Svbart@nginx.com 
43316Svbart@nginx.com     return NXT_ERROR;
43416Svbart@nginx.com }
43516Svbart@nginx.com 
43616Svbart@nginx.com 
43716Svbart@nginx.com static nxt_int_t
43816Svbart@nginx.com nxt_http_parse_field_name(nxt_http_request_parse_t *rp, u_char **pos,
43916Svbart@nginx.com     u_char *end)
44016Svbart@nginx.com {
44116Svbart@nginx.com     u_char  *p, ch, c;
44216Svbart@nginx.com     size_t  i, size;
44316Svbart@nginx.com 
44416Svbart@nginx.com     static const u_char  normal[256]  nxt_aligned(64) =
44516Svbart@nginx.com         "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
44616Svbart@nginx.com         "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
44716Svbart@nginx.com 
44816Svbart@nginx.com         /* These 64 bytes should reside in one cache line. */
44916Svbart@nginx.com         "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
45016Svbart@nginx.com         "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
45116Svbart@nginx.com 
45216Svbart@nginx.com         "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
45316Svbart@nginx.com         "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
45416Svbart@nginx.com         "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
45516Svbart@nginx.com         "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
45616Svbart@nginx.com 
45716Svbart@nginx.com     p = *pos;
45816Svbart@nginx.com 
45916Svbart@nginx.com     size = end - p;
46067Svbart@nginx.com     i = rp->field_name.length;
46116Svbart@nginx.com 
462*409Svbart@nginx.com     while (nxt_fast_path(size - i >= 8)) {
463*409Svbart@nginx.com 
464*409Svbart@nginx.com #define nxt_field_name_test_char(i)                                           \
465*409Svbart@nginx.com                                                                               \
46619Svbart@nginx.com         ch = p[i];                                                            \
46719Svbart@nginx.com         c = normal[ch];                                                       \
46819Svbart@nginx.com                                                                               \
46919Svbart@nginx.com         if (nxt_slow_path(c == '\0')) {                                       \
47019Svbart@nginx.com             goto name_end;                                                    \
47119Svbart@nginx.com         }                                                                     \
47219Svbart@nginx.com                                                                               \
473*409Svbart@nginx.com         rp->field_key.str[i % 32] = c;
474*409Svbart@nginx.com 
475*409Svbart@nginx.com /* enddef */
47616Svbart@nginx.com 
477*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
478*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
479*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
480*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
48116Svbart@nginx.com 
482*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
483*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
484*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
485*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
48619Svbart@nginx.com     }
48716Svbart@nginx.com 
48819Svbart@nginx.com     while (nxt_fast_path(i != size)) {
489*409Svbart@nginx.com         nxt_field_name_test_char(i); i++;
49019Svbart@nginx.com     }
49116Svbart@nginx.com 
49267Svbart@nginx.com     rp->field_name.length = i;
49316Svbart@nginx.com     rp->handler = &nxt_http_parse_field_name;
49416Svbart@nginx.com 
49516Svbart@nginx.com     return NXT_AGAIN;
49619Svbart@nginx.com 
49719Svbart@nginx.com name_end:
49819Svbart@nginx.com 
49919Svbart@nginx.com     if (nxt_fast_path(ch == ':')) {
50019Svbart@nginx.com         if (nxt_slow_path(i == 0)) {
50119Svbart@nginx.com             return NXT_ERROR;
50219Svbart@nginx.com         }
50319Svbart@nginx.com 
50419Svbart@nginx.com         *pos = &p[i] + 1;
50519Svbart@nginx.com 
50667Svbart@nginx.com         rp->field_name.length = i;
50767Svbart@nginx.com         rp->field_name.start = p;
50819Svbart@nginx.com 
50919Svbart@nginx.com         return nxt_http_parse_field_value(rp, pos, end);
51019Svbart@nginx.com     }
51119Svbart@nginx.com 
51259Svbart@nginx.com     if (nxt_slow_path(i != 0)) {
51359Svbart@nginx.com         return NXT_ERROR;
51459Svbart@nginx.com     }
51519Svbart@nginx.com 
51619Svbart@nginx.com     return nxt_http_parse_field_end(rp, pos, end);
51716Svbart@nginx.com }
51816Svbart@nginx.com 
51916Svbart@nginx.com 
52016Svbart@nginx.com static nxt_int_t
52116Svbart@nginx.com nxt_http_parse_field_value(nxt_http_request_parse_t *rp, u_char **pos,
52216Svbart@nginx.com     u_char *end)
52316Svbart@nginx.com {
52416Svbart@nginx.com     u_char  *p, ch;
52516Svbart@nginx.com 
52616Svbart@nginx.com     p = *pos;
52716Svbart@nginx.com 
52816Svbart@nginx.com     for ( ;; ) {
52916Svbart@nginx.com         if (nxt_slow_path(p == end)) {
53016Svbart@nginx.com             *pos = p;
53116Svbart@nginx.com             rp->handler = &nxt_http_parse_field_value;
53216Svbart@nginx.com             return NXT_AGAIN;
53316Svbart@nginx.com         }
53416Svbart@nginx.com 
53516Svbart@nginx.com         if (*p != ' ') {
53616Svbart@nginx.com             break;
53716Svbart@nginx.com         }
53816Svbart@nginx.com 
53916Svbart@nginx.com         p++;
54016Svbart@nginx.com     }
54116Svbart@nginx.com 
54216Svbart@nginx.com     *pos = p;
54316Svbart@nginx.com 
54467Svbart@nginx.com     p += rp->field_value.length;
54516Svbart@nginx.com 
54616Svbart@nginx.com     for ( ;; ) {
54716Svbart@nginx.com         p = nxt_http_lookup_field_end(p, end);
54816Svbart@nginx.com 
54916Svbart@nginx.com         if (nxt_slow_path(p == end)) {
55067Svbart@nginx.com             rp->field_value.length = p - *pos;
55116Svbart@nginx.com             rp->handler = &nxt_http_parse_field_value;
55216Svbart@nginx.com             return NXT_AGAIN;
55316Svbart@nginx.com         }
55416Svbart@nginx.com 
55516Svbart@nginx.com         ch = *p;
55616Svbart@nginx.com 
55716Svbart@nginx.com         if (nxt_fast_path(ch == '\r' || ch == '\n')) {
55816Svbart@nginx.com             break;
55916Svbart@nginx.com         }
56016Svbart@nginx.com 
56116Svbart@nginx.com         if (ch == '\0') {
56216Svbart@nginx.com             return NXT_ERROR;
56316Svbart@nginx.com         }
56416Svbart@nginx.com     }
56516Svbart@nginx.com 
56616Svbart@nginx.com     if (nxt_fast_path(p != *pos)) {
56716Svbart@nginx.com         while (p[-1] == ' ') {
56816Svbart@nginx.com             p--;
56916Svbart@nginx.com         }
57016Svbart@nginx.com     }
57116Svbart@nginx.com 
57267Svbart@nginx.com     rp->field_value.length = p - *pos;
57367Svbart@nginx.com     rp->field_value.start = *pos;
57416Svbart@nginx.com 
57516Svbart@nginx.com     *pos = p;
57616Svbart@nginx.com 
57716Svbart@nginx.com     return nxt_http_parse_field_end(rp, pos, end);
57816Svbart@nginx.com }
57916Svbart@nginx.com 
58016Svbart@nginx.com 
58116Svbart@nginx.com static u_char *
58216Svbart@nginx.com nxt_http_lookup_field_end(u_char *p, u_char *end)
58316Svbart@nginx.com {
584*409Svbart@nginx.com     while (nxt_fast_path(end - p >= 16)) {
585*409Svbart@nginx.com 
586*409Svbart@nginx.com #define nxt_field_end_test_char(ch)                                           \
587*409Svbart@nginx.com                                                                               \
588*409Svbart@nginx.com         if (nxt_slow_path((ch) < 0x10)) {                                     \
589*409Svbart@nginx.com             return &(ch);                                                     \
590*409Svbart@nginx.com         }
591*409Svbart@nginx.com 
592*409Svbart@nginx.com /* enddef */
593*409Svbart@nginx.com 
594*409Svbart@nginx.com         nxt_field_end_test_char(p[0]);
595*409Svbart@nginx.com         nxt_field_end_test_char(p[1]);
596*409Svbart@nginx.com         nxt_field_end_test_char(p[2]);
597*409Svbart@nginx.com         nxt_field_end_test_char(p[3]);
59816Svbart@nginx.com 
599*409Svbart@nginx.com         nxt_field_end_test_char(p[4]);
600*409Svbart@nginx.com         nxt_field_end_test_char(p[5]);
601*409Svbart@nginx.com         nxt_field_end_test_char(p[6]);
602*409Svbart@nginx.com         nxt_field_end_test_char(p[7]);
603*409Svbart@nginx.com 
604*409Svbart@nginx.com         nxt_field_end_test_char(p[8]);
605*409Svbart@nginx.com         nxt_field_end_test_char(p[9]);
606*409Svbart@nginx.com         nxt_field_end_test_char(p[10]);
607*409Svbart@nginx.com         nxt_field_end_test_char(p[11]);
608*409Svbart@nginx.com 
609*409Svbart@nginx.com         nxt_field_end_test_char(p[12]);
610*409Svbart@nginx.com         nxt_field_end_test_char(p[13]);
611*409Svbart@nginx.com         nxt_field_end_test_char(p[14]);
612*409Svbart@nginx.com         nxt_field_end_test_char(p[15]);
613*409Svbart@nginx.com 
614*409Svbart@nginx.com         p += 16;
61516Svbart@nginx.com     }
61616Svbart@nginx.com 
617*409Svbart@nginx.com     while (nxt_fast_path(end - p >= 4)) {
61819Svbart@nginx.com 
619*409Svbart@nginx.com         nxt_field_end_test_char(p[0]);
620*409Svbart@nginx.com         nxt_field_end_test_char(p[1]);
621*409Svbart@nginx.com         nxt_field_end_test_char(p[2]);
622*409Svbart@nginx.com         nxt_field_end_test_char(p[3]);
62316Svbart@nginx.com 
624*409Svbart@nginx.com         p += 4;
62519Svbart@nginx.com     }
62619Svbart@nginx.com 
62719Svbart@nginx.com     switch (end - p) {
62816Svbart@nginx.com     case 3:
629*409Svbart@nginx.com         nxt_field_end_test_char(*p); p++;
63039Svbart@nginx.com         /* Fall through. */
63116Svbart@nginx.com     case 2:
632*409Svbart@nginx.com         nxt_field_end_test_char(*p); p++;
63339Svbart@nginx.com         /* Fall through. */
63416Svbart@nginx.com     case 1:
635*409Svbart@nginx.com         nxt_field_end_test_char(*p); p++;
63639Svbart@nginx.com         /* Fall through. */
63716Svbart@nginx.com     case 0:
63816Svbart@nginx.com         break;
63916Svbart@nginx.com     default:
64016Svbart@nginx.com         nxt_unreachable();
64116Svbart@nginx.com     }
64216Svbart@nginx.com 
64316Svbart@nginx.com     return p;
64416Svbart@nginx.com }
64516Svbart@nginx.com 
64616Svbart@nginx.com 
64716Svbart@nginx.com static nxt_int_t
64816Svbart@nginx.com nxt_http_parse_field_end(nxt_http_request_parse_t *rp, u_char **pos,
64916Svbart@nginx.com     u_char *end)
65016Svbart@nginx.com {
65160Svbart@nginx.com     u_char            *p;
65260Svbart@nginx.com     nxt_http_field_t  *field;
65316Svbart@nginx.com 
65416Svbart@nginx.com     p = *pos;
65516Svbart@nginx.com 
65616Svbart@nginx.com     if (nxt_fast_path(*p == '\r')) {
65716Svbart@nginx.com         p++;
65816Svbart@nginx.com 
65916Svbart@nginx.com         if (nxt_slow_path(p == end)) {
66016Svbart@nginx.com             rp->handler = &nxt_http_parse_field_end;
66116Svbart@nginx.com             return NXT_AGAIN;
66216Svbart@nginx.com         }
66316Svbart@nginx.com     }
66416Svbart@nginx.com 
66516Svbart@nginx.com     if (nxt_fast_path(*p == '\n')) {
66616Svbart@nginx.com         *pos = p + 1;
66716Svbart@nginx.com 
66867Svbart@nginx.com         if (rp->field_name.length != 0) {
66960Svbart@nginx.com             field = nxt_list_add(rp->fields);
67016Svbart@nginx.com 
67160Svbart@nginx.com             if (nxt_slow_path(field == NULL)) {
67260Svbart@nginx.com                 return NXT_ERROR;
67316Svbart@nginx.com             }
67416Svbart@nginx.com 
67567Svbart@nginx.com             field->name = rp->field_name;
67667Svbart@nginx.com             field->value = rp->field_value;
67760Svbart@nginx.com 
67867Svbart@nginx.com             nxt_http_fields_hash_lookup(rp->fields_hash, rp->field_key.ui64,
67967Svbart@nginx.com                                         field);
68067Svbart@nginx.com 
68167Svbart@nginx.com             nxt_memzero(rp->field_key.str, 32);
68267Svbart@nginx.com 
68367Svbart@nginx.com             rp->field_name.length = 0;
68467Svbart@nginx.com             rp->field_value.length = 0;
68516Svbart@nginx.com 
68616Svbart@nginx.com             rp->handler = &nxt_http_parse_field_name;
68716Svbart@nginx.com             return NXT_OK;
68816Svbart@nginx.com         }
68916Svbart@nginx.com 
69016Svbart@nginx.com         return NXT_DONE;
69116Svbart@nginx.com     }
69216Svbart@nginx.com 
69316Svbart@nginx.com     return NXT_ERROR;
69416Svbart@nginx.com }
69516Svbart@nginx.com 
69616Svbart@nginx.com 
69760Svbart@nginx.com nxt_http_fields_hash_t *
69860Svbart@nginx.com nxt_http_fields_hash_create(nxt_http_fields_hash_entry_t *entries,
69965Sigor@sysoev.ru     nxt_mp_t *mp)
70016Svbart@nginx.com {
70160Svbart@nginx.com     size_t                      min_length, max_length, length, size;
70260Svbart@nginx.com     nxt_uint_t                  i, j, n;
70360Svbart@nginx.com     nxt_http_fields_hash_t      *hash;
70460Svbart@nginx.com     nxt_http_fields_hash_elt_t  *elt;
70516Svbart@nginx.com 
70638Svbart@nginx.com     min_length = 32 + 1;
70716Svbart@nginx.com     max_length = 0;
70816Svbart@nginx.com 
70960Svbart@nginx.com     for (i = 0; entries[i].handler != NULL; i++) {
71060Svbart@nginx.com         length = entries[i].name.length;
71116Svbart@nginx.com 
71216Svbart@nginx.com         if (length > 32) {
71316Svbart@nginx.com             /* TODO */
71416Svbart@nginx.com             return NULL;
71516Svbart@nginx.com         }
71616Svbart@nginx.com 
71716Svbart@nginx.com         min_length = nxt_min(length, min_length);
71816Svbart@nginx.com         max_length = nxt_max(length, max_length);
71916Svbart@nginx.com     }
72016Svbart@nginx.com 
72138Svbart@nginx.com     size = sizeof(nxt_http_fields_hash_t);
72216Svbart@nginx.com 
72338Svbart@nginx.com     if (min_length <= 32) {
72438Svbart@nginx.com         size += (max_length - min_length + 1)
72560Svbart@nginx.com                 * sizeof(nxt_http_fields_hash_elt_t *);
72638Svbart@nginx.com     }
72716Svbart@nginx.com 
72865Sigor@sysoev.ru     hash = nxt_mp_zget(mp, size);
72916Svbart@nginx.com     if (nxt_slow_path(hash == NULL)) {
73016Svbart@nginx.com         return NULL;
73116Svbart@nginx.com     }
73216Svbart@nginx.com 
73316Svbart@nginx.com     hash->min_length = min_length;
73416Svbart@nginx.com     hash->max_length = max_length;
73516Svbart@nginx.com 
73660Svbart@nginx.com     for (i = 0; entries[i].handler != NULL; i++) {
73760Svbart@nginx.com         length = entries[i].name.length;
73860Svbart@nginx.com         elt = hash->elts[length - min_length];
73916Svbart@nginx.com 
74060Svbart@nginx.com         if (elt != NULL) {
74116Svbart@nginx.com             continue;
74216Svbart@nginx.com         }
74316Svbart@nginx.com 
74416Svbart@nginx.com         n = 1;
74516Svbart@nginx.com 
74660Svbart@nginx.com         for (j = i + 1; entries[j].handler != NULL; j++) {
74760Svbart@nginx.com             if (length == entries[j].name.length) {
74816Svbart@nginx.com                 n++;
74916Svbart@nginx.com             }
75016Svbart@nginx.com         }
75116Svbart@nginx.com 
75260Svbart@nginx.com         size = sizeof(nxt_http_fields_hash_elt_t) + nxt_align_size(length, 8);
75316Svbart@nginx.com 
75465Sigor@sysoev.ru         elt = nxt_mp_zget(mp, n * size + sizeof(nxt_http_fields_hash_elt_t));
75516Svbart@nginx.com 
75660Svbart@nginx.com         if (nxt_slow_path(elt == NULL)) {
75716Svbart@nginx.com             return NULL;
75816Svbart@nginx.com         }
75916Svbart@nginx.com 
76060Svbart@nginx.com         hash->elts[length - min_length] = elt;
76116Svbart@nginx.com 
76260Svbart@nginx.com         for (j = i; entries[j].handler != NULL; j++) {
76360Svbart@nginx.com             if (length != entries[j].name.length) {
76416Svbart@nginx.com                 continue;
76516Svbart@nginx.com             }
76616Svbart@nginx.com 
76767Svbart@nginx.com             elt->handler = entries[j].handler;
76867Svbart@nginx.com             elt->data = entries[j].data;
76916Svbart@nginx.com 
77060Svbart@nginx.com             nxt_memcpy_lowcase(elt->key->str, entries[j].name.start, length);
77116Svbart@nginx.com 
77216Svbart@nginx.com             n--;
77316Svbart@nginx.com 
77416Svbart@nginx.com             if (n == 0) {
77516Svbart@nginx.com                 break;
77616Svbart@nginx.com             }
77716Svbart@nginx.com 
77898Svbart@nginx.com             elt = nxt_pointer_to(elt, size);
77916Svbart@nginx.com         }
78016Svbart@nginx.com     }
78116Svbart@nginx.com 
78216Svbart@nginx.com     return hash;
78316Svbart@nginx.com }
78460Svbart@nginx.com 
78560Svbart@nginx.com 
78667Svbart@nginx.com static void
78767Svbart@nginx.com nxt_http_fields_hash_lookup(nxt_http_fields_hash_t *hash, uint64_t key[4],
78860Svbart@nginx.com     nxt_http_field_t *field)
78960Svbart@nginx.com {
79060Svbart@nginx.com     nxt_http_fields_hash_elt_t  *elt;
79160Svbart@nginx.com 
79267Svbart@nginx.com     if (hash == NULL || field->name.length < hash->min_length) {
79367Svbart@nginx.com         goto not_found;
79460Svbart@nginx.com     }
79560Svbart@nginx.com 
79660Svbart@nginx.com     if (field->name.length > hash->max_length) {
79760Svbart@nginx.com 
79860Svbart@nginx.com         if (field->name.length > 32 && hash->long_fields != NULL) {
79967Svbart@nginx.com             nxt_http_fields_hash_lookup_long(hash, field);
80067Svbart@nginx.com             return;
80160Svbart@nginx.com         }
80260Svbart@nginx.com 
80367Svbart@nginx.com         goto not_found;
80460Svbart@nginx.com     }
80560Svbart@nginx.com 
80660Svbart@nginx.com     elt = hash->elts[field->name.length - hash->min_length];
80760Svbart@nginx.com 
80860Svbart@nginx.com     if (elt == NULL) {
80967Svbart@nginx.com         goto not_found;
81060Svbart@nginx.com     }
81160Svbart@nginx.com 
81260Svbart@nginx.com     switch ((field->name.length + 7) / 8) {
81360Svbart@nginx.com     case 1:
81460Svbart@nginx.com         do {
81567Svbart@nginx.com             if (elt->key[0].ui64 == key[0]) {
81667Svbart@nginx.com                 break;
81760Svbart@nginx.com             }
81860Svbart@nginx.com 
81960Svbart@nginx.com             elt = nxt_http_fields_hash_next_elt(elt, 1);
82060Svbart@nginx.com 
82167Svbart@nginx.com         } while (elt->handler != NULL);
82260Svbart@nginx.com 
82360Svbart@nginx.com         break;
82460Svbart@nginx.com 
82560Svbart@nginx.com     case 2:
82660Svbart@nginx.com         do {
82767Svbart@nginx.com             if (elt->key[0].ui64 == key[0]
82867Svbart@nginx.com                 && elt->key[1].ui64 == key[1])
82960Svbart@nginx.com             {
83067Svbart@nginx.com                 break;
83160Svbart@nginx.com             }
83260Svbart@nginx.com 
83360Svbart@nginx.com             elt = nxt_http_fields_hash_next_elt(elt, 2);
83460Svbart@nginx.com 
83567Svbart@nginx.com         } while (elt->handler != NULL);
83660Svbart@nginx.com 
83760Svbart@nginx.com         break;
83860Svbart@nginx.com 
83960Svbart@nginx.com     case 3:
84060Svbart@nginx.com         do {
84167Svbart@nginx.com             if (elt->key[0].ui64 == key[0]
84267Svbart@nginx.com                 && elt->key[1].ui64 == key[1]
84367Svbart@nginx.com                 && elt->key[2].ui64 == key[2])
84460Svbart@nginx.com             {
84567Svbart@nginx.com                 break;
84660Svbart@nginx.com             }
84760Svbart@nginx.com 
84860Svbart@nginx.com             elt = nxt_http_fields_hash_next_elt(elt, 3);
84960Svbart@nginx.com 
85067Svbart@nginx.com         } while (elt->handler != NULL);
85160Svbart@nginx.com 
85260Svbart@nginx.com         break;
85360Svbart@nginx.com 
85460Svbart@nginx.com     case 4:
85560Svbart@nginx.com         do {
85667Svbart@nginx.com             if (elt->key[0].ui64 == key[0]
85767Svbart@nginx.com                 && elt->key[1].ui64 == key[1]
85867Svbart@nginx.com                 && elt->key[2].ui64 == key[2]
85967Svbart@nginx.com                 && elt->key[3].ui64 == key[3])
86060Svbart@nginx.com             {
86167Svbart@nginx.com                 break;
86260Svbart@nginx.com             }
86360Svbart@nginx.com 
86460Svbart@nginx.com             elt = nxt_http_fields_hash_next_elt(elt, 4);
86560Svbart@nginx.com 
86667Svbart@nginx.com         } while (elt->handler != NULL);
86760Svbart@nginx.com 
86860Svbart@nginx.com         break;
86960Svbart@nginx.com 
87060Svbart@nginx.com     default:
87160Svbart@nginx.com         nxt_unreachable();
87260Svbart@nginx.com     }
87360Svbart@nginx.com 
87467Svbart@nginx.com     field->handler = elt->handler;
87567Svbart@nginx.com     field->data = elt->data;
87667Svbart@nginx.com 
87767Svbart@nginx.com     return;
87867Svbart@nginx.com 
87967Svbart@nginx.com not_found:
88067Svbart@nginx.com 
88167Svbart@nginx.com     field->handler = NULL;
88267Svbart@nginx.com     field->data = 0;
88360Svbart@nginx.com }
88460Svbart@nginx.com 
88560Svbart@nginx.com 
88667Svbart@nginx.com static void
88760Svbart@nginx.com nxt_http_fields_hash_lookup_long(nxt_http_fields_hash_t *hash,
88860Svbart@nginx.com     nxt_http_field_t *field)
88960Svbart@nginx.com {
89060Svbart@nginx.com     /* TODO */
89167Svbart@nginx.com 
89267Svbart@nginx.com     field->handler = NULL;
89367Svbart@nginx.com     field->data = 0;
89460Svbart@nginx.com }
89560Svbart@nginx.com 
89660Svbart@nginx.com 
89760Svbart@nginx.com nxt_int_t
89867Svbart@nginx.com nxt_http_fields_process(nxt_list_t *fields, void *ctx, nxt_log_t *log)
89960Svbart@nginx.com {
90067Svbart@nginx.com     nxt_int_t         rc;
90167Svbart@nginx.com     nxt_http_field_t  *field;
90260Svbart@nginx.com 
90360Svbart@nginx.com     nxt_list_each(field, fields) {
90460Svbart@nginx.com 
90567Svbart@nginx.com         if (field->handler != NULL) {
90667Svbart@nginx.com             rc = field->handler(ctx, field, log);
90760Svbart@nginx.com 
90860Svbart@nginx.com             if (rc != NXT_OK) {
90960Svbart@nginx.com                 return rc;
91060Svbart@nginx.com             }
91160Svbart@nginx.com         }
91260Svbart@nginx.com 
91360Svbart@nginx.com     } nxt_list_loop;
91460Svbart@nginx.com 
91560Svbart@nginx.com     return NXT_OK;
91660Svbart@nginx.com }
917112Smax.romanov@nginx.com 
918112Smax.romanov@nginx.com 
919112Smax.romanov@nginx.com #define                                                                       \
920112Smax.romanov@nginx.com nxt_http_is_normal(c)                                                         \
921112Smax.romanov@nginx.com     (nxt_fast_path((nxt_http_normal[c / 8] & (1 << (c & 7))) != 0))
922112Smax.romanov@nginx.com 
923112Smax.romanov@nginx.com 
924112Smax.romanov@nginx.com static const uint8_t  nxt_http_normal[32]  nxt_aligned(32) = {
925112Smax.romanov@nginx.com 
926112Smax.romanov@nginx.com                              /*        \0   \r  \n                         */
927112Smax.romanov@nginx.com     0xfe, 0xdb, 0xff, 0xff,  /* 1111 1110  1101 1011  1111 1111  1111 1111 */
928112Smax.romanov@nginx.com 
929112Smax.romanov@nginx.com                              /* '&%$ #"!   /.-, |*)(  7654 3210  ?>=< ;:98 */
930112Smax.romanov@nginx.com     0xd6, 0x37, 0xff, 0x7f,  /* 1101 0110  0011 0111  1111 1111  0111 1111 */
931112Smax.romanov@nginx.com 
932112Smax.romanov@nginx.com                              /* GFED CBA@  ONML KJIH  WVUT SRQP  _^]\ [ZYX */
933112Smax.romanov@nginx.com     0xff, 0xff, 0xff, 0xff,  /* 1111 1111  1111 1111  1111 1111  1111 1111 */
934112Smax.romanov@nginx.com 
935112Smax.romanov@nginx.com                              /* gfed cba`  onml kjih  wvut srqp   ~}| {zyx */
936112Smax.romanov@nginx.com     0xff, 0xff, 0xff, 0xff,  /* 1111 1111  1111 1111  1111 1111  1111 1111 */
937112Smax.romanov@nginx.com 
938112Smax.romanov@nginx.com     0xff, 0xff, 0xff, 0xff,  /* 1111 1111  1111 1111  1111 1111  1111 1111 */
939112Smax.romanov@nginx.com     0xff, 0xff, 0xff, 0xff,  /* 1111 1111  1111 1111  1111 1111  1111 1111 */
940112Smax.romanov@nginx.com     0xff, 0xff, 0xff, 0xff,  /* 1111 1111  1111 1111  1111 1111  1111 1111 */
941112Smax.romanov@nginx.com     0xff, 0xff, 0xff, 0xff,  /* 1111 1111  1111 1111  1111 1111  1111 1111 */
942112Smax.romanov@nginx.com };
943112Smax.romanov@nginx.com 
944112Smax.romanov@nginx.com 
945112Smax.romanov@nginx.com static nxt_int_t
946112Smax.romanov@nginx.com nxt_http_parse_complex_target(nxt_http_request_parse_t *rp)
947112Smax.romanov@nginx.com {
948112Smax.romanov@nginx.com     u_char  *p, *u, c, ch, high;
949112Smax.romanov@nginx.com     enum {
950112Smax.romanov@nginx.com         sw_normal = 0,
951112Smax.romanov@nginx.com         sw_slash,
952112Smax.romanov@nginx.com         sw_dot,
953112Smax.romanov@nginx.com         sw_dot_dot,
954112Smax.romanov@nginx.com         sw_quoted,
955112Smax.romanov@nginx.com         sw_quoted_second,
956112Smax.romanov@nginx.com     } state, saved_state;
957112Smax.romanov@nginx.com 
958112Smax.romanov@nginx.com     nxt_prefetch(nxt_http_normal);
959112Smax.romanov@nginx.com 
960112Smax.romanov@nginx.com     state = sw_normal;
961112Smax.romanov@nginx.com     saved_state = sw_normal;
962112Smax.romanov@nginx.com     p = rp->target_start;
963112Smax.romanov@nginx.com 
964112Smax.romanov@nginx.com     u = nxt_mp_alloc(rp->mem_pool, rp->target_end - p + 1);
965112Smax.romanov@nginx.com 
966112Smax.romanov@nginx.com     if (nxt_slow_path(u == NULL)) {
967112Smax.romanov@nginx.com         return NXT_ERROR;
968112Smax.romanov@nginx.com     }
969112Smax.romanov@nginx.com 
970112Smax.romanov@nginx.com     rp->path.length = 0;
971112Smax.romanov@nginx.com     rp->path.start = u;
972112Smax.romanov@nginx.com 
973112Smax.romanov@nginx.com     high = '\0';
974112Smax.romanov@nginx.com     rp->exten_start = NULL;
975112Smax.romanov@nginx.com     rp->args_start = NULL;
976112Smax.romanov@nginx.com 
977112Smax.romanov@nginx.com     while (p < rp->target_end) {
978112Smax.romanov@nginx.com 
979112Smax.romanov@nginx.com         ch = *p++;
980112Smax.romanov@nginx.com 
981112Smax.romanov@nginx.com     again:
982112Smax.romanov@nginx.com 
983112Smax.romanov@nginx.com         switch (state) {
984112Smax.romanov@nginx.com 
985112Smax.romanov@nginx.com         case sw_normal:
986112Smax.romanov@nginx.com 
987112Smax.romanov@nginx.com             if (nxt_http_is_normal(ch)) {
988112Smax.romanov@nginx.com                 *u++ = ch;
989112Smax.romanov@nginx.com                 continue;
990112Smax.romanov@nginx.com             }
991112Smax.romanov@nginx.com 
992112Smax.romanov@nginx.com             switch (ch) {
993112Smax.romanov@nginx.com             case '/':
994112Smax.romanov@nginx.com                 rp->exten_start = NULL;
995112Smax.romanov@nginx.com                 state = sw_slash;
996112Smax.romanov@nginx.com                 *u++ = ch;
997112Smax.romanov@nginx.com                 continue;
998112Smax.romanov@nginx.com             case '%':
999112Smax.romanov@nginx.com                 saved_state = state;
1000112Smax.romanov@nginx.com                 state = sw_quoted;
1001112Smax.romanov@nginx.com                 continue;
1002112Smax.romanov@nginx.com             case '?':
1003112Smax.romanov@nginx.com                 rp->args_start = p;
1004112Smax.romanov@nginx.com                 goto args;
1005112Smax.romanov@nginx.com             case '#':
1006112Smax.romanov@nginx.com                 goto done;
1007112Smax.romanov@nginx.com             case '.':
1008112Smax.romanov@nginx.com                 rp->exten_start = u + 1;
1009112Smax.romanov@nginx.com                 *u++ = ch;
1010112Smax.romanov@nginx.com                 continue;
1011112Smax.romanov@nginx.com             case '+':
1012112Smax.romanov@nginx.com                 rp->plus_in_target = 1;
1013112Smax.romanov@nginx.com                 /* Fall through. */
1014112Smax.romanov@nginx.com             default:
1015112Smax.romanov@nginx.com                 *u++ = ch;
1016112Smax.romanov@nginx.com                 continue;
1017112Smax.romanov@nginx.com             }
1018112Smax.romanov@nginx.com 
1019112Smax.romanov@nginx.com             break;
1020112Smax.romanov@nginx.com 
1021112Smax.romanov@nginx.com         case sw_slash:
1022112Smax.romanov@nginx.com 
1023112Smax.romanov@nginx.com             if (nxt_http_is_normal(ch)) {
1024112Smax.romanov@nginx.com                 state = sw_normal;
1025112Smax.romanov@nginx.com                 *u++ = ch;
1026112Smax.romanov@nginx.com                 continue;
1027112Smax.romanov@nginx.com             }
1028112Smax.romanov@nginx.com 
1029112Smax.romanov@nginx.com             switch (ch) {
1030112Smax.romanov@nginx.com             case '/':
1031112Smax.romanov@nginx.com                 continue;
1032112Smax.romanov@nginx.com             case '.':
1033112Smax.romanov@nginx.com                 state = sw_dot;
1034112Smax.romanov@nginx.com                 *u++ = ch;
1035112Smax.romanov@nginx.com                 continue;
1036112Smax.romanov@nginx.com             case '%':
1037112Smax.romanov@nginx.com                 saved_state = state;
1038112Smax.romanov@nginx.com                 state = sw_quoted;
1039112Smax.romanov@nginx.com                 continue;
1040112Smax.romanov@nginx.com             case '?':
1041112Smax.romanov@nginx.com                 rp->args_start = p;
1042112Smax.romanov@nginx.com                 goto args;
1043112Smax.romanov@nginx.com             case '#':
1044112Smax.romanov@nginx.com                 goto done;
1045112Smax.romanov@nginx.com             case '+':
1046112Smax.romanov@nginx.com                 rp->plus_in_target = 1;
1047112Smax.romanov@nginx.com                 /* Fall through. */
1048112Smax.romanov@nginx.com             default:
1049112Smax.romanov@nginx.com                 state = sw_normal;
1050112Smax.romanov@nginx.com                 *u++ = ch;
1051112Smax.romanov@nginx.com                 continue;
1052112Smax.romanov@nginx.com             }
1053112Smax.romanov@nginx.com 
1054112Smax.romanov@nginx.com             break;
1055112Smax.romanov@nginx.com 
1056112Smax.romanov@nginx.com         case sw_dot:
1057112Smax.romanov@nginx.com 
1058112Smax.romanov@nginx.com             if (nxt_http_is_normal(ch)) {
1059112Smax.romanov@nginx.com                 state = sw_normal;
1060112Smax.romanov@nginx.com                 *u++ = ch;
1061112Smax.romanov@nginx.com                 continue;
1062112Smax.romanov@nginx.com             }
1063112Smax.romanov@nginx.com 
1064112Smax.romanov@nginx.com             switch (ch) {
1065112Smax.romanov@nginx.com             case '/':
1066112Smax.romanov@nginx.com                 state = sw_slash;
1067112Smax.romanov@nginx.com                 u--;
1068112Smax.romanov@nginx.com                 continue;
1069112Smax.romanov@nginx.com             case '.':
1070112Smax.romanov@nginx.com                 state = sw_dot_dot;
1071112Smax.romanov@nginx.com                 *u++ = ch;
1072112Smax.romanov@nginx.com                 continue;
1073112Smax.romanov@nginx.com             case '%':
1074112Smax.romanov@nginx.com                 saved_state = state;
1075112Smax.romanov@nginx.com                 state = sw_quoted;
1076112Smax.romanov@nginx.com                 continue;
1077112Smax.romanov@nginx.com             case '?':
1078112Smax.romanov@nginx.com                 rp->args_start = p;
1079112Smax.romanov@nginx.com                 goto args;
1080112Smax.romanov@nginx.com             case '#':
1081112Smax.romanov@nginx.com                 goto done;
1082112Smax.romanov@nginx.com             case '+':
1083112Smax.romanov@nginx.com                 rp->plus_in_target = 1;
1084112Smax.romanov@nginx.com                 /* Fall through. */
1085112Smax.romanov@nginx.com             default:
1086112Smax.romanov@nginx.com                 state = sw_normal;
1087112Smax.romanov@nginx.com                 *u++ = ch;
1088112Smax.romanov@nginx.com                 continue;
1089112Smax.romanov@nginx.com             }
1090112Smax.romanov@nginx.com 
1091112Smax.romanov@nginx.com             break;
1092112Smax.romanov@nginx.com 
1093112Smax.romanov@nginx.com         case sw_dot_dot:
1094112Smax.romanov@nginx.com 
1095112Smax.romanov@nginx.com             if (nxt_http_is_normal(ch)) {
1096112Smax.romanov@nginx.com                 state = sw_normal;
1097112Smax.romanov@nginx.com                 *u++ = ch;
1098