parser.c File Reference

#include <stdlib.h>
#include <stddef.h>
#include <ctype.h>
#include "internal.h"
#include "evhtp/parser.h"
#include "evhtp/config.h"
#include "log.h"

Include dependency graph for parser.c:

Go to the source code of this file.

Data Structures
struct	htparser

Macros
#define	PARSER_STACK_MAX   8192
#define	LF   (unsigned char)10
#define	CR   (unsigned char)13
#define	CRLF   "\x0d\x0a"
#define	log_htparser__s_(p)
#define	_MIN_READ(a, b)   ((a) < (b) ? (a) : (b))
#define	_str3_cmp(m, c0, c1, c2, c3)   *(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
#define	_str3Ocmp(m, c0, c1, c2, c3)   *(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
#define	_str4cmp(m, c0, c1, c2, c3)   *(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
#define	_str5cmp(m, c0, c1, c2, c3, c4)
#define	_str6cmp(m, c0, c1, c2, c3, c4, c5)
#define	_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7)
#define	_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7)
#define	_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8)
#define	__HTPARSE_GENHOOK(__n)
#define	__HTPARSE_GENDHOOK(__n)
#define	HTP_SET_BUF(CH)

Typedefs
typedef enum eval_hdr_val	eval_hdr_val
typedef enum parser_flags	parser_flags
typedef enum parser_state	parser_state

Enumerations
enum	eval_hdr_val {   eval_hdr_val_none = 0, eval_hdr_val_connection, eval_hdr_val_proxy_connection, eval_hdr_val_content_length,   eval_hdr_val_transfer_encoding, eval_hdr_val_hostname, eval_hdr_val_content_type }
enum	parser_flags { parser_flag_chunked = (1 << 0), parser_flag_connection_keep_alive = (1 << 1), parser_flag_connection_close = (1 << 2), parser_flag_trailing = (1 << 3) }
enum	parser_state {   s_start = 0, s_method, s_spaces_before_uri, s_schema,   s_schema_slash, s_schema_slash_slash, s_host, s_host_ipv6,   s_host_done, s_port, s_after_slash_in_uri, s_check_uri,   s_uri, s_http_09, s_http_H, s_http_HT,   s_http_HTT, s_http_HTTP, s_first_major_digit, s_major_digit,   s_first_minor_digit, s_minor_digit, s_spaces_after_digit, s_almost_done,   s_done, s_hdrline_start, s_hdrline_hdr_almost_done, s_hdrline_hdr_done,   s_hdrline_hdr_key, s_hdrline_hdr_space_before_val, s_hdrline_hdr_val, s_hdrline_almost_done,   s_hdrline_done, s_body_read, s_chunk_size_start, s_chunk_size,   s_chunk_size_almost_done, s_chunk_data, s_chunk_data_almost_done, s_chunk_data_done,   s_status, s_space_after_status, s_status_text }

Functions
static uint64_t	str_to_uint64 (char *str, size_t n, int *err)
static ssize_t	_str_to_ssize_t (char *str, size_t n)
htpparse_error	htparser_get_error (htparser *p)
const char *	htparser_get_strerror (htparser *p)
unsigned int	htparser_get_status (htparser *p)
int	htparser_should_keep_alive (htparser *p)
htp_scheme	htparser_get_scheme (htparser *p)
htp_method	htparser_get_method (htparser *p)
const char *	htparser_get_methodstr_m (htp_method meth)
const char *	htparser_get_methodstr (htparser *p)
void	htparser_set_major (htparser *p, unsigned char major)
void	htparser_set_minor (htparser *p, unsigned char minor)
unsigned char	htparser_get_major (htparser *p)
unsigned char	htparser_get_minor (htparser *p)
unsigned char	htparser_get_multipart (htparser *p)
void *	htparser_get_userdata (htparser *p)
void	htparser_set_userdata (htparser *p, void *ud)
uint64_t	htparser_get_content_pending (htparser *p)
uint64_t	htparser_get_content_length (htparser *p)
uint64_t	htparser_get_bytes_read (htparser *p)
uint64_t	htparser_get_total_bytes_read (htparser *p)
void	htparser_init (htparser *p, htp_type type)
htparser *	htparser_new (void)
static int	is_host_char (unsigned char ch)
static htp_method	get_method (const char *m, const size_t sz)
size_t	htparser_run (htparser *p, htparse_hooks *hooks, const char *data, size_t len)

Variables
static uint32_t	usual []
static int8_t	unhex [256]
static const char *	errstr_map []
static const char *	method_strmap []

Macro Definition Documentation

__HTPARSE_GENDHOOK

#define __HTPARSE_GENDHOOK

(

__n

)

Value:

static inline int hook_ ## __n ## _run(htparser * p,               \
                                           htparse_hooks * hooks,      \
                                           const char * s, size_t l) { \
        log_debug("enter");                                            \
        if (hooks && (hooks)->__n)                                     \
        {                                                              \
            return (hooks)->__n(p, s, l);                              \
        }                                                              \
                                                                       \
        return 0;                                                      \
    }

Definition at line 314 of file parser.c.

__HTPARSE_GENHOOK

#define __HTPARSE_GENHOOK

(

__n

)

Value:

static inline int hook_ ## __n ## _run(htparser * p, htparse_hooks * hooks) { \
        log_debug("enter");                                                       \
        if (hooks && (hooks)->__n)                                                \
        {                                                                         \
            return (hooks)->__n(p);                                               \
        }                                                                         \
                                                                                  \
        return 0;                                                                 \
    }

Definition at line 303 of file parser.c.

_MIN_READ

#define _MIN_READ	(		a,
			b
	)		((a) < (b) ? (a) : (b))

Definition at line 238 of file parser.c.

_str3_cmp

#define _str3_cmp	(		m,
			c0,
			c1,
			c2,
			c3
	)		*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)

Definition at line 242 of file parser.c.

_str3Ocmp

#define _str3Ocmp	(		m,
			c0,
			c1,
			c2,
			c3
	)		*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)

Definition at line 245 of file parser.c.

_str4cmp

#define _str4cmp	(		m,
			c0,
			c1,
			c2,
			c3
	)		*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)

Definition at line 248 of file parser.c.

_str5cmp

#define _str5cmp	(		m,
			c0,
			c1,
			c2,
			c3,
			c4
	)

Value:

*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
    && m[4] == c4

Definition at line 251 of file parser.c.

_str6cmp

#define _str6cmp	(		m,
			c0,
			c1,
			c2,
			c3,
			c4,
			c5
	)

Value:

*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
    && (((uint32_t *)m)[1] & 0xffff) == ((c5 << 8) | c4)

Definition at line 255 of file parser.c.

_str7_cmp

#define _str7_cmp	(		m,
			c0,
			c1,
			c2,
			c3,
			c4,
			c5,
			c6,
			c7
	)

Value:

*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
    && ((uint32_t *)m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)

Definition at line 259 of file parser.c.

_str8cmp

#define _str8cmp	(		m,
			c0,
			c1,
			c2,
			c3,
			c4,
			c5,
			c6,
			c7
	)

Value:

*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
    && ((uint32_t *)m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)

Definition at line 263 of file parser.c.

_str9cmp

#define _str9cmp	(		m,
			c0,
			c1,
			c2,
			c3,
			c4,
			c5,
			c6,
			c7,
			c8
	)

Value:

*(uint32_t *)m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)        \
    && ((uint32_t *)m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
    && m[8] == c8

Definition at line 267 of file parser.c.

CR

#define CR   (unsigned char)13

Definition at line 16 of file parser.c.

CRLF

#define CRLF   "\x0d\x0a"

Definition at line 17 of file parser.c.

HTP_SET_BUF

#define HTP_SET_BUF

(

CH

)

Value:

do {                                     \
        if (evhtp_likely((p->buf_idx + 1) < PARSER_STACK_MAX)) { \
            p->buf[p->buf_idx++] = CH;                           \
            p->buf[p->buf_idx]   = '\0';                         \
        } else {                                                 \
            p->error = htparse_error_too_big;                    \
            return i + 1;                                        \
        }                                                        \
} while (0)

Definition at line 706 of file parser.c.

LF

#define LF   (unsigned char)10

Definition at line 15 of file parser.c.

log_htparser__s_

#define log_htparser__s_

(

p

)

Definition at line 178 of file parser.c.

PARSER_STACK_MAX

#define PARSER_STACK_MAX   8192

Definition at line 14 of file parser.c.

Typedef Documentation

eval_hdr_val

typedef enum eval_hdr_val eval_hdr_val

Definition at line 82 of file parser.c.

parser_flags

typedef enum parser_flags parser_flags

Definition at line 83 of file parser.c.

parser_state

typedef enum parser_state parser_state

Definition at line 84 of file parser.c.

Enumeration Type Documentation

eval_hdr_val

enum eval_hdr_val

Enumerator
eval_hdr_val_none
eval_hdr_val_connection
eval_hdr_val_proxy_connection
eval_hdr_val_content_length
eval_hdr_val_transfer_encoding
eval_hdr_val_hostname
eval_hdr_val_content_type

Definition at line 19 of file parser.c.

parser_flags

enum parser_flags

Enumerator
parser_flag_chunked
parser_flag_connection_keep_alive
parser_flag_connection_close
parser_flag_trailing

Definition at line 29 of file parser.c.

parser_state

enum parser_state

Enumerator
s_start
s_method
s_spaces_before_uri
s_schema
s_schema_slash
s_schema_slash_slash
s_host
s_host_ipv6
s_host_done
s_port
s_after_slash_in_uri
s_check_uri
s_uri
s_http_09
s_http_H
s_http_HT
s_http_HTT
s_http_HTTP
s_first_major_digit
s_major_digit
s_first_minor_digit
s_minor_digit
s_spaces_after_digit
s_almost_done
s_done
s_hdrline_start
s_hdrline_hdr_almost_done
s_hdrline_hdr_done
s_hdrline_hdr_key
s_hdrline_hdr_space_before_val
s_hdrline_hdr_val
s_hdrline_almost_done
s_hdrline_done
s_body_read
s_chunk_size_start
s_chunk_size
s_chunk_size_almost_done
s_chunk_data
s_chunk_data_almost_done
s_chunk_data_done
s_status
s_space_after_status
s_status_text

Definition at line 36 of file parser.c.

Function Documentation

_str_to_ssize_t()

static ssize_t _str_to_ssize_t ( char *  str, size_t  n  )

inlinestatic

Definition at line 391 of file parser.c.

get_method()

static htp_method get_method ( const char *  m, const size_t  sz  )

static

Definition at line 600 of file parser.c.

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htparser_get_bytes_read()

uint64_t htparser_get_bytes_read

(

htparser *

p

)

Definition at line 552 of file parser.c.

htparser_get_content_length()

uint64_t htparser_get_content_length

(

htparser *

p

)

Definition at line 546 of file parser.c.

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htparser_get_content_pending()

uint64_t htparser_get_content_pending

(

htparser *

p

)

Definition at line 540 of file parser.c.

htparser_get_error()

htpparse_error htparser_get_error

(

htparser *

p

)

Definition at line 421 of file parser.c.

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htparser_get_major()

unsigned char htparser_get_major

(

htparser *

p

)

Definition at line 510 of file parser.c.

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htparser_get_method()

htp_method htparser_get_method

(

htparser *

p

)

Definition at line 475 of file parser.c.

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htparser_get_methodstr()

const char* htparser_get_methodstr

(

htparser *

p

)

Definition at line 492 of file parser.c.

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htparser_get_methodstr_m()

const char* htparser_get_methodstr_m

(

htp_method

meth

)

Definition at line 481 of file parser.c.

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htparser_get_minor()

unsigned char htparser_get_minor

(

htparser *

p

)

Definition at line 516 of file parser.c.

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htparser_get_multipart()

unsigned char htparser_get_multipart

(

htparser *

p

)

Definition at line 522 of file parser.c.

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htparser_get_scheme()

htp_scheme htparser_get_scheme

(

htparser *

p

)

Definition at line 469 of file parser.c.

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htparser_get_status()

unsigned int htparser_get_status

(

htparser *

p

)

Definition at line 440 of file parser.c.

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htparser_get_strerror()

const char* htparser_get_strerror

(

htparser *

p

)

Definition at line 427 of file parser.c.

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htparser_get_total_bytes_read()

uint64_t htparser_get_total_bytes_read

(

htparser *

p

)

Definition at line 558 of file parser.c.

htparser_get_userdata()

void* htparser_get_userdata

(

htparser *

p

)

Definition at line 528 of file parser.c.

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htparser_init()

void htparser_init	(	htparser *	p,
		htp_type	type
	)

Definition at line 564 of file parser.c.

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htparser_new()

htparser* htparser_new

(

void

)

Definition at line 576 of file parser.c.

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htparser_run()

size_t htparser_run	(	htparser *	p,
		htparse_hooks *	hooks,
		const char *	data,
		size_t	len
	)

Definition at line 718 of file parser.c.

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htparser_set_major()

void htparser_set_major	(	htparser *	p,
		unsigned char	major
	)

Definition at line 498 of file parser.c.

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htparser_set_minor()

void htparser_set_minor	(	htparser *	p,
		unsigned char	minor
	)

Definition at line 504 of file parser.c.

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htparser_set_userdata()

void htparser_set_userdata	(	htparser *	p,
		void *	ud
	)

Definition at line 534 of file parser.c.

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htparser_should_keep_alive()

int htparser_should_keep_alive

(

htparser *

p

)

Definition at line 446 of file parser.c.

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is_host_char()

static int is_host_char ( unsigned char  ch )

static

Definition at line 582 of file parser.c.

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str_to_uint64()

static uint64_t str_to_uint64 ( char *  str, size_t  n, int *  err  )

inlinestatic

Definition at line 349 of file parser.c.

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Variable Documentation

errstr_map

const char* errstr_map[]

static

Initial value:

= {
    "htparse_error_none",
    "htparse_error_too_big",
    "htparse_error_invalid_method",
    "htparse_error_invalid_requestline",
    "htparse_error_invalid_schema",
    "htparse_error_invalid_protocol",
    "htparse_error_invalid_version",
    "htparse_error_invalid_header",
    "htparse_error_invalid_chunk_size",
    "htparse_error_invalid_chunk",
    "htparse_error_invalid_state",
    "htparse_error_user",
    "htparse_error_unknown"
}

Definition at line 203 of file parser.c.

method_strmap

const char* method_strmap[]

static

Initial value:

= {
    "GET",
    "HEAD",
    "POST",
    "PUT",
    "DELETE",
    "MKCOL",
    "COPY",
    "MOVE",
    "OPTIONS",
    "PROPFIND",
    "PROPATCH",
    "LOCK",
    "UNLOCK",
    "TRACE",
    "CONNECT",
    "PATCH",
}

Definition at line 219 of file parser.c.

unhex

int8_t unhex[256]

static

Initial value:

= {
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  -1, -1, -1, -1, -1, -1,
    -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
}

Definition at line 192 of file parser.c.

usual

uint32_t usual[]

static

Initial value:

= {
    0xffffdbfe,
    0x7fff37d6,
    0xffffffff,
    0xffffffff,
    0xffffffff,
    0xffffffff,
    0xffffffff,
    0xffffffff
}

Definition at line 181 of file parser.c.