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#ifndef _HTTP_AUTH_H_
#define _HTTP_AUTH_H_
#include "first.h"
#include "base_decls.h"
#include "buffer.h"
#include "array.h"
void http_auth_dumbdata_reset (void);
typedef enum http_auth_digest_type {
HTTP_AUTH_DIGEST_NONE = 0
,HTTP_AUTH_DIGEST_SESS = 0x01
,HTTP_AUTH_DIGEST_MD5 = 0x02
,HTTP_AUTH_DIGEST_SHA256 = 0x04
,HTTP_AUTH_DIGEST_SHA512_256 = 0x08
} http_auth_digest_type;
#define HTTP_AUTH_DIGEST_MD5_BINLEN 16 /* MD5_DIGEST_LENGTH */
#define HTTP_AUTH_DIGEST_SHA256_BINLEN 32 /* SHA256_DIGEST_LENGTH */
#define HTTP_AUTH_DIGEST_SHA512_256_BINLEN 32 /* SHA512_256_DIGEST_LENGTH */
unsigned int http_auth_digest_len (int algo);
struct http_auth_scheme_t;
struct http_auth_require_t;
struct http_auth_backend_t;
typedef struct http_auth_require_t {
const struct http_auth_scheme_t *scheme;
buffer *realm;
int valid_user;
int algorithm;
array *user;
array *group;
array *host;
} http_auth_require_t;
http_auth_require_t * http_auth_require_init (void);
void http_auth_require_free (http_auth_require_t *require);
int http_auth_match_rules (const http_auth_require_t *require, const char *user, const char *group, const char *host);
typedef struct http_auth_info_t {
int dalgo;
unsigned int dlen;
const char *username;
size_t ulen;
const char *realm;
size_t rlen;
/*(must be >= largest binary digest length accepted above)*/
unsigned char digest[32];
} http_auth_info_t;
typedef struct http_auth_backend_t {
const char *name;
handler_t(*basic)(server *srv, connection *con, void *p_d, const http_auth_require_t *require, const buffer *username, const char *pw);
handler_t(*digest)(server *srv, connection *con, void *p_d, http_auth_info_t *ai);
void *p_d;
} http_auth_backend_t;
typedef struct http_auth_scheme_t {
const char *name;
handler_t(*checkfn)(server *srv, connection *con, void *p_d, const struct http_auth_require_t *require, const struct http_auth_backend_t *backend);
/*(backend is arg only because auth.backend is separate config directive)*/
void *p_d;
} http_auth_scheme_t;
const http_auth_scheme_t * http_auth_scheme_get (const buffer *name);
void http_auth_scheme_set (const http_auth_scheme_t *scheme);
const http_auth_backend_t * http_auth_backend_get (const buffer *name);
void http_auth_backend_set (const http_auth_backend_t *backend);
int http_auth_const_time_memeq (const char *a, size_t alen, const char *b, size_t blen);
void http_auth_setenv(connection *con, const char *username, size_t ulen, const char *auth_type, size_t alen);
int http_auth_digest_hex2bin (const char *hexstr, size_t len, unsigned char *bin, size_t binlen);
#endif