xref: /unit/src/nxt_http_parse.h (revision 1270)
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 #ifndef _NXT_HTTP_PARSER_H_INCLUDED_
816Svbart@nginx.com #define _NXT_HTTP_PARSER_H_INCLUDED_
916Svbart@nginx.com 
1016Svbart@nginx.com 
11480Svbart@nginx.com typedef enum {
12480Svbart@nginx.com     NXT_HTTP_PARSE_INVALID = 1,
13482Svbart@nginx.com     NXT_HTTP_PARSE_UNSUPPORTED_VERSION,
14480Svbart@nginx.com     NXT_HTTP_PARSE_TOO_LARGE_FIELD,
15480Svbart@nginx.com } nxt_http_parse_error_t;
16480Svbart@nginx.com 
17480Svbart@nginx.com 
1816Svbart@nginx.com typedef struct nxt_http_request_parse_s  nxt_http_request_parse_t;
1967Svbart@nginx.com typedef struct nxt_http_field_s          nxt_http_field_t;
2016Svbart@nginx.com typedef struct nxt_http_fields_hash_s    nxt_http_fields_hash_t;
2116Svbart@nginx.com 
2260Svbart@nginx.com 
2360Svbart@nginx.com typedef union {
24417Svbart@nginx.com     u_char                    str[8];
25417Svbart@nginx.com     uint64_t                  ui64;
26481Svbart@nginx.com 
27481Svbart@nginx.com     struct {
28481Svbart@nginx.com         u_char                prefix[5];
29481Svbart@nginx.com         u_char                major;
30481Svbart@nginx.com         u_char                point;
31481Svbart@nginx.com         u_char                minor;
32481Svbart@nginx.com     } s;
3360Svbart@nginx.com } nxt_http_ver_t;
3416Svbart@nginx.com 
3516Svbart@nginx.com 
3616Svbart@nginx.com struct nxt_http_request_parse_s {
3767Svbart@nginx.com     nxt_int_t                 (*handler)(nxt_http_request_parse_t *rp,
3867Svbart@nginx.com                                          u_char **pos, u_char *end);
3967Svbart@nginx.com 
4067Svbart@nginx.com     nxt_str_t                 method;
4116Svbart@nginx.com 
4267Svbart@nginx.com     u_char                    *target_start;
4367Svbart@nginx.com     u_char                    *target_end;
4416Svbart@nginx.com 
45112Smax.romanov@nginx.com     nxt_str_t                 path;
46112Smax.romanov@nginx.com     nxt_str_t                 args;
47112Smax.romanov@nginx.com 
4867Svbart@nginx.com     nxt_http_ver_t            version;
4967Svbart@nginx.com 
50417Svbart@nginx.com     nxt_list_t                *fields;
51417Svbart@nginx.com     nxt_mp_t                  *mem_pool;
5216Svbart@nginx.com 
5367Svbart@nginx.com     nxt_str_t                 field_name;
5467Svbart@nginx.com     nxt_str_t                 field_value;
5516Svbart@nginx.com 
56417Svbart@nginx.com     uint32_t                  field_hash;
5716Svbart@nginx.com 
5816Svbart@nginx.com     /* target with "/." */
591170Svbart@nginx.com     uint8_t                   complex_target;   /* 1 bit */
6016Svbart@nginx.com     /* target with "%" */
611170Svbart@nginx.com     uint8_t                   quoted_target;    /* 1 bit */
6216Svbart@nginx.com     /* target with " " */
631170Svbart@nginx.com     uint8_t                   space_in_target;  /* 1 bit */
641167Svbart@nginx.com 
651167Svbart@nginx.com     /* Preserve encoded '/' (%2F) and '%' (%25). */
661170Svbart@nginx.com     uint8_t                   encoded_slashes;  /* 1 bit */
6716Svbart@nginx.com };
6816Svbart@nginx.com 
6916Svbart@nginx.com 
7060Svbart@nginx.com typedef nxt_int_t (*nxt_http_field_handler_t)(void *ctx,
7160Svbart@nginx.com                                               nxt_http_field_t *field,
72417Svbart@nginx.com                                               uintptr_t data);
7360Svbart@nginx.com 
7460Svbart@nginx.com 
7516Svbart@nginx.com typedef struct {
7616Svbart@nginx.com     nxt_str_t                 name;
7716Svbart@nginx.com     nxt_http_field_handler_t  handler;
7816Svbart@nginx.com     uintptr_t                 data;
79417Svbart@nginx.com } nxt_http_field_proc_t;
8060Svbart@nginx.com 
8160Svbart@nginx.com 
8267Svbart@nginx.com struct nxt_http_field_s {
83417Svbart@nginx.com     uint16_t                  hash;
84*1270Sigor@sysoev.ru     uint8_t                   skip:1;
85*1270Sigor@sysoev.ru     uint8_t                   hopbyhop:1;
86417Svbart@nginx.com     uint8_t                   name_length;
87417Svbart@nginx.com     uint32_t                  value_length;
88417Svbart@nginx.com     u_char                    *name;
89417Svbart@nginx.com     u_char                    *value;
9067Svbart@nginx.com };
9167Svbart@nginx.com 
9267Svbart@nginx.com 
931059Sigor@sysoev.ru #define NXT_HTTP_FIELD_HASH_INIT        159406U
941059Sigor@sysoev.ru #define nxt_http_field_hash_char(h, c)  (((h) << 4) + (h) + (c))
951059Sigor@sysoev.ru #define nxt_http_field_hash_end(h)      (((h) >> 16) ^ (h))
961059Sigor@sysoev.ru 
971059Sigor@sysoev.ru 
98417Svbart@nginx.com nxt_int_t nxt_http_parse_request_init(nxt_http_request_parse_t *rp,
99417Svbart@nginx.com     nxt_mp_t *mp);
10016Svbart@nginx.com nxt_int_t nxt_http_parse_request(nxt_http_request_parse_t *rp,
10116Svbart@nginx.com     nxt_buf_mem_t *b);
102422Svbart@nginx.com nxt_int_t nxt_http_parse_fields(nxt_http_request_parse_t *rp,
103422Svbart@nginx.com     nxt_buf_mem_t *b);
10460Svbart@nginx.com 
105417Svbart@nginx.com nxt_int_t nxt_http_fields_hash(nxt_lvlhsh_t *hash, nxt_mp_t *mp,
106417Svbart@nginx.com     nxt_http_field_proc_t items[], nxt_uint_t count);
107417Svbart@nginx.com nxt_uint_t nxt_http_fields_hash_collisions(nxt_lvlhsh_t *hash, nxt_mp_t *mp,
108417Svbart@nginx.com     nxt_http_field_proc_t items[], nxt_uint_t count, nxt_bool_t level);
109417Svbart@nginx.com nxt_int_t nxt_http_fields_process(nxt_list_t *fields, nxt_lvlhsh_t *hash,
110417Svbart@nginx.com     void *ctx);
11116Svbart@nginx.com 
11216Svbart@nginx.com 
1131159Smax.romanov@nginx.com extern const nxt_lvlhsh_proto_t  nxt_http_fields_hash_proto;
1141126Smax.romanov@nginx.com 
1151126Smax.romanov@nginx.com nxt_inline nxt_int_t
1161126Smax.romanov@nginx.com nxt_http_field_process(nxt_http_field_t *field, nxt_lvlhsh_t *hash, void *ctx)
1171126Smax.romanov@nginx.com {
1181126Smax.romanov@nginx.com     nxt_lvlhsh_query_t     lhq;
1191126Smax.romanov@nginx.com     nxt_http_field_proc_t  *proc;
1201126Smax.romanov@nginx.com 
1211126Smax.romanov@nginx.com     lhq.proto = &nxt_http_fields_hash_proto;
1221126Smax.romanov@nginx.com 
1231126Smax.romanov@nginx.com     lhq.key_hash = field->hash;
1241126Smax.romanov@nginx.com     lhq.key.length = field->name_length;
1251126Smax.romanov@nginx.com     lhq.key.start = field->name;
1261126Smax.romanov@nginx.com 
1271126Smax.romanov@nginx.com     if (nxt_lvlhsh_find(hash, &lhq) != NXT_OK) {
1281126Smax.romanov@nginx.com         return NXT_OK;
1291126Smax.romanov@nginx.com     }
1301126Smax.romanov@nginx.com 
1311126Smax.romanov@nginx.com     proc = lhq.value;
1321126Smax.romanov@nginx.com 
1331126Smax.romanov@nginx.com     return proc->handler(ctx, field, proc->data);
1341126Smax.romanov@nginx.com }
1351126Smax.romanov@nginx.com 
1361126Smax.romanov@nginx.com 
13716Svbart@nginx.com #endif /* _NXT_HTTP_PARSER_H_INCLUDED_ */
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