xref: /unit/src/nxt_http_parse.h (revision 2139:99d792169ffb)
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,
38*2139Sandrew@digital-domain.net                                          u_char **pos, const 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 
581709Svbart@nginx.com     uint8_t                   skip_field;             /* 1 bit */
591709Svbart@nginx.com     uint8_t                   discard_unsafe_fields;  /* 1 bit */
601709Svbart@nginx.com 
6116Svbart@nginx.com     /* target with "/." */
621709Svbart@nginx.com     uint8_t                   complex_target;         /* 1 bit */
631709Svbart@nginx.com #if 0
6416Svbart@nginx.com     /* target with "%" */
651709Svbart@nginx.com     uint8_t                   quoted_target;          /* 1 bit */
6616Svbart@nginx.com     /* target with " " */
671709Svbart@nginx.com     uint8_t                   space_in_target;        /* 1 bit */
681709Svbart@nginx.com #endif
691167Svbart@nginx.com     /* Preserve encoded '/' (%2F) and '%' (%25). */
701709Svbart@nginx.com     uint8_t                   encoded_slashes;        /* 1 bit */
7116Svbart@nginx.com };
7216Svbart@nginx.com 
7316Svbart@nginx.com 
7460Svbart@nginx.com typedef nxt_int_t (*nxt_http_field_handler_t)(void *ctx,
7560Svbart@nginx.com                                               nxt_http_field_t *field,
76417Svbart@nginx.com                                               uintptr_t data);
7760Svbart@nginx.com 
7860Svbart@nginx.com 
7916Svbart@nginx.com typedef struct {
8016Svbart@nginx.com     nxt_str_t                 name;
8116Svbart@nginx.com     nxt_http_field_handler_t  handler;
8216Svbart@nginx.com     uintptr_t                 data;
83417Svbart@nginx.com } nxt_http_field_proc_t;
8460Svbart@nginx.com 
8560Svbart@nginx.com 
8667Svbart@nginx.com struct nxt_http_field_s {
87417Svbart@nginx.com     uint16_t                  hash;
881270Sigor@sysoev.ru     uint8_t                   skip:1;
891270Sigor@sysoev.ru     uint8_t                   hopbyhop:1;
90417Svbart@nginx.com     uint8_t                   name_length;
91417Svbart@nginx.com     uint32_t                  value_length;
92417Svbart@nginx.com     u_char                    *name;
93417Svbart@nginx.com     u_char                    *value;
9467Svbart@nginx.com };
9567Svbart@nginx.com 
9667Svbart@nginx.com 
971505Sigor@sysoev.ru typedef struct {
981505Sigor@sysoev.ru     u_char                    *pos;
991505Sigor@sysoev.ru     nxt_mp_t                  *mem_pool;
1001505Sigor@sysoev.ru 
1011505Sigor@sysoev.ru     uint64_t                  chunk_size;
1021505Sigor@sysoev.ru 
1031505Sigor@sysoev.ru     uint8_t                   state;
1041505Sigor@sysoev.ru     uint8_t                   last;         /* 1 bit */
1051505Sigor@sysoev.ru     uint8_t                   chunk_error;  /* 1 bit */
1061505Sigor@sysoev.ru     uint8_t                   error;        /* 1 bit */
1071505Sigor@sysoev.ru } nxt_http_chunk_parse_t;
1081505Sigor@sysoev.ru 
1091505Sigor@sysoev.ru 
1101059Sigor@sysoev.ru #define NXT_HTTP_FIELD_HASH_INIT        159406U
1111059Sigor@sysoev.ru #define nxt_http_field_hash_char(h, c)  (((h) << 4) + (h) + (c))
1121059Sigor@sysoev.ru #define nxt_http_field_hash_end(h)      (((h) >> 16) ^ (h))
1131059Sigor@sysoev.ru 
1141059Sigor@sysoev.ru 
115417Svbart@nginx.com nxt_int_t nxt_http_parse_request_init(nxt_http_request_parse_t *rp,
116417Svbart@nginx.com     nxt_mp_t *mp);
11716Svbart@nginx.com nxt_int_t nxt_http_parse_request(nxt_http_request_parse_t *rp,
11816Svbart@nginx.com     nxt_buf_mem_t *b);
119422Svbart@nginx.com nxt_int_t nxt_http_parse_fields(nxt_http_request_parse_t *rp,
120422Svbart@nginx.com     nxt_buf_mem_t *b);
12160Svbart@nginx.com 
1221459Smax.romanov@nginx.com nxt_int_t nxt_http_fields_hash(nxt_lvlhsh_t *hash,
123417Svbart@nginx.com     nxt_http_field_proc_t items[], nxt_uint_t count);
1241459Smax.romanov@nginx.com nxt_uint_t nxt_http_fields_hash_collisions(nxt_lvlhsh_t *hash,
125417Svbart@nginx.com     nxt_http_field_proc_t items[], nxt_uint_t count, nxt_bool_t level);
126417Svbart@nginx.com nxt_int_t nxt_http_fields_process(nxt_list_t *fields, nxt_lvlhsh_t *hash,
127417Svbart@nginx.com     void *ctx);
12816Svbart@nginx.com 
1291505Sigor@sysoev.ru nxt_buf_t *nxt_http_chunk_parse(nxt_task_t *task, nxt_http_chunk_parse_t *hcp,
1301505Sigor@sysoev.ru     nxt_buf_t *in);
1311505Sigor@sysoev.ru 
13216Svbart@nginx.com 
1331159Smax.romanov@nginx.com extern const nxt_lvlhsh_proto_t  nxt_http_fields_hash_proto;
1341126Smax.romanov@nginx.com 
1351126Smax.romanov@nginx.com nxt_inline nxt_int_t
nxt_http_field_process(nxt_http_field_t * field,nxt_lvlhsh_t * hash,void * ctx)1361126Smax.romanov@nginx.com nxt_http_field_process(nxt_http_field_t *field, nxt_lvlhsh_t *hash, void *ctx)
1371126Smax.romanov@nginx.com {
1381126Smax.romanov@nginx.com     nxt_lvlhsh_query_t     lhq;
1391126Smax.romanov@nginx.com     nxt_http_field_proc_t  *proc;
1401126Smax.romanov@nginx.com 
1411126Smax.romanov@nginx.com     lhq.proto = &nxt_http_fields_hash_proto;
1421126Smax.romanov@nginx.com 
1431126Smax.romanov@nginx.com     lhq.key_hash = field->hash;
1441126Smax.romanov@nginx.com     lhq.key.length = field->name_length;
1451126Smax.romanov@nginx.com     lhq.key.start = field->name;
1461126Smax.romanov@nginx.com 
1471126Smax.romanov@nginx.com     if (nxt_lvlhsh_find(hash, &lhq) != NXT_OK) {
1481126Smax.romanov@nginx.com         return NXT_OK;
1491126Smax.romanov@nginx.com     }
1501126Smax.romanov@nginx.com 
1511126Smax.romanov@nginx.com     proc = lhq.value;
1521126Smax.romanov@nginx.com 
1531126Smax.romanov@nginx.com     return proc->handler(ctx, field, proc->data);
1541126Smax.romanov@nginx.com }
1551126Smax.romanov@nginx.com 
1561126Smax.romanov@nginx.com 
15716Svbart@nginx.com #endif /* _NXT_HTTP_PARSER_H_INCLUDED_ */
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