JWT C Library. More...

#include <stdio.h>
#include <time.h>

Include dependency graph for jwt.h:

Data Structures
struct	jwt_key_t
	Structure used by key provider to return a key. More...

Macros
#define	DEPRECATED(func)

#define	JWT_EXPORT

#define	JWT_ALG_INVAL

#define	JWT_VALIDATION_SUCCESS
	JWT Validation exception types.

#define	JWT_VALIDATION_ERROR

#define	JWT_VALIDATION_ALG_MISMATCH

#define	JWT_VALIDATION_EXPIRED

#define	JWT_VALIDATION_TOO_NEW

#define	JWT_VALIDATION_ISS_MISMATCH

#define	JWT_VALIDATION_SUB_MISMATCH

#define	JWT_VALIDATION_AUD_MISMATCH

#define	JWT_VALIDATION_GRANT_MISSING

#define	JWT_VALIDATION_GRANT_MISMATCH

Typedefs
typedef struct jwt	jwt_t
	Opaque JWT object.

typedef struct jwt_valid	jwt_valid_t
	Opaque JWT validation object.

typedef enum jwt_alg	jwt_alg_t
	JWT algorithm types.

typedef void (	jwt_malloc_t) (size_t)
	JWT Memory allocation overrides.

typedef void (	jwt_realloc_t) (void *, size_t)

typedef void(*	jwt_free_t) (void *)

typedef int(*	jwt_key_p_t) (const jwt_t , jwt_key_t )
	Key provider - inspects the JWT to obtain the key used to verify the signature.

Enumerations
enum	jwt_alg { JWT_ALG_NONE , JWT_ALG_HS256 , JWT_ALG_HS384 , JWT_ALG_HS512 , JWT_ALG_RS256 , JWT_ALG_RS384 , JWT_ALG_RS512 , JWT_ALG_ES256 , JWT_ALG_ES384 , JWT_ALG_ES512 , JWT_ALG_PS256 , JWT_ALG_PS384 , JWT_ALG_PS512 , JWT_ALG_TERM }
	JWT algorithm types. More...

Functions
int	jwt_new (jwt_t **jwt)
	Allocate a new, empty, JWT object.

int	jwt_decode (jwt_t *jwt, const char token, const unsigned char *key, int key_len)
	Verify an existing JWT and allocate a new JWT object from it.

int	jwt_decode_2 (jwt_t *jwt, const char token, jwt_key_p_t key_provider)
	Like jwt_decode(), but the key will be obtained via the key provider.

void	jwt_free (jwt_t *jwt)
	Free a JWT object and any other resources it is using.

jwt_t *	jwt_dup (jwt_t *jwt)
	Duplicate an existing JWT object.

const char *	jwt_get_grant (jwt_t jwt, const char grant)
	Return the value of a string grant.

long	jwt_get_grant_int (jwt_t jwt, const char grant)
	Return the value of an integer grant.

int	jwt_get_grant_bool (jwt_t jwt, const char grant)
	Return the value of an boolean grant.

char *	jwt_get_grants_json (jwt_t jwt, const char grant)
	Return the value of a grant as JSON encoded object string.

int	jwt_add_grant (jwt_t jwt, const char grant, const char *val)
	Add a new string grant to this JWT object.

int	jwt_add_grant_int (jwt_t jwt, const char grant, long val)
	Add a new integer grant to this JWT object.

int	jwt_add_grant_bool (jwt_t jwt, const char grant, int val)
	Add a new boolean grant to this JWT object.

int	jwt_add_grants_json (jwt_t jwt, const char json)
	Add grants from a JSON encoded object string.

int	jwt_del_grants (jwt_t jwt, const char grant)
	Delete a grant from this JWT object.

const char *	jwt_get_header (jwt_t jwt, const char header)
	Return the value of a string header.

long	jwt_get_header_int (jwt_t jwt, const char header)
	Return the value of an integer header.

int	jwt_get_header_bool (jwt_t jwt, const char header)
	Return the value of an boolean header.

char *	jwt_get_headers_json (jwt_t jwt, const char header)
	Return the value of a header as JSON encoded object string.

int	jwt_add_header (jwt_t jwt, const char header, const char *val)
	Add a new string header to this JWT object.

int	jwt_add_header_int (jwt_t jwt, const char header, long val)
	Add a new integer header to this JWT object.

int	jwt_add_header_bool (jwt_t jwt, const char header, int val)
	Add a new boolean header to this JWT object.

int	jwt_add_headers_json (jwt_t jwt, const char json)
	Add headers from a JSON encoded object string.

int	jwt_del_headers (jwt_t jwt, const char header)
	Delete a header from this JWT object.

int	jwt_dump_fp (jwt_t jwt, FILE fp, int pretty)
	Output plain text representation to a FILE pointer.

char *	jwt_dump_str (jwt_t *jwt, int pretty)
	Return plain text representation as a string.

int	jwt_encode_fp (jwt_t jwt, FILE fp)
	Fully encode a JWT object and write it to FILE.

char *	jwt_encode_str (jwt_t *jwt)
	Fully encode a JWT object and return as a string.

void	jwt_free_str (char *str)
	Free a string returned from the library.

int	jwt_set_alg (jwt_t jwt, jwt_alg_t alg, const unsigned char key, int len)
	Set an algorithm from jwt_alg_t for this JWT object.

jwt_alg_t	jwt_get_alg (const jwt_t *jwt)
	Get the jwt_alg_t set for this JWT object.

const char *	jwt_alg_str (jwt_alg_t alg)
	Convert alg type to it's string representation.

jwt_alg_t	jwt_str_alg (const char *alg)
	Convert alg string to type.

int	jwt_set_alloc (jwt_malloc_t pmalloc, jwt_realloc_t prealloc, jwt_free_t pfree)
	Set functions to be used for allocating and freeing memory.

void	jwt_get_alloc (jwt_malloc_t pmalloc, jwt_realloc_t prealloc, jwt_free_t *pfree)
	Get functions used for allocating and freeing memory.

unsigned int	jwt_validate (jwt_t jwt, jwt_valid_t jwt_valid)
	Validate a JWT object with a validation object.

int	jwt_valid_new (jwt_valid_t **jwt_valid, jwt_alg_t alg)
	Allocate a new, JWT validation object.

void	jwt_valid_free (jwt_valid_t *jwt_valid)
	Free a JWT validation object and any other resources it is using.

unsigned int	jwt_valid_get_status (jwt_valid_t *jwt_valid)
	Return the status string for the validation object.

time_t	jwt_valid_get_nbf_leeway (jwt_valid_t *jwt_valid)
	Return the nbf_leeway value set.

time_t	jwt_valid_get_exp_leeway (jwt_valid_t *jwt_valid)
	Return the exp_leeway value set.

int	jwt_valid_add_grant (jwt_valid_t jwt_valid, const char grant, const char *val)
	Add a new string grant requirement to this JWT validation object.

const char *	jwt_valid_get_grant (jwt_valid_t jwt_valid, const char grant)
	Return the value of a string required grant.

int	jwt_valid_add_grant_int (jwt_valid_t jwt_valid, const char grant, long val)
	Add a new integer grant requirement to this JWT validation object.

long	jwt_valid_get_grant_int (jwt_valid_t jwt_valid, const char grant)
	Return the value of an integer required grant.

int	jwt_valid_add_grant_bool (jwt_valid_t jwt_valid, const char grant, int val)
	Add a new boolean required grant to this JWT validation object.

int	jwt_valid_get_grant_bool (jwt_valid_t jwt_valid, const char grant)
	Return the value of an boolean required grant.

int	jwt_valid_add_grants_json (jwt_valid_t jwt_valid, const char json)
	Add required grants from a JSON encoded object string.

char *	jwt_valid_get_grants_json (jwt_valid_t jwt_valid, const char grant)
	Return the value of a grant as JSON encoded object string.

int	jwt_valid_del_grants (jwt_valid_t jwt_valid, const char grant)
	Delete a grant from this JWT object.

int	jwt_valid_set_now (jwt_valid_t *jwt_valid, const time_t now)
	Set the time for which expires and not-before claims should be evaluated.

int	jwt_valid_set_nbf_leeway (jwt_valid_t *jwt_valid, const time_t nbf_leeway)
	Set the nbf_leeway value as defined in: https://www.rfc-editor.org/rfc/rfc7519#section-4.1.5.

int	jwt_valid_set_exp_leeway (jwt_valid_t *jwt_valid, const time_t exp_leeway)
	Set the exp_leeway value as defined in: https://www.rfc-editor.org/rfc/rfc7519#section-4.1.4.

int	jwt_valid_set_headers (jwt_valid_t *jwt_valid, int hdr)
	Set validation for replicated claims in headers.

char *	jwt_exception_str (unsigned int exceptions)
	Parses exceptions and returns a comma delimited and human-readable string.

Detailed Description

JWT C Library.

Definition in file jwt.h.

Macro Definition Documentation

◆ DEPRECATED

#define DEPRECATED ( func )

Definition at line 40 of file jwt.h.

◆ JWT_ALG_INVAL

#define JWT_ALG_INVAL

Definition at line 75 of file jwt.h.

◆ JWT_EXPORT

#define JWT_EXPORT

Definition at line 41 of file jwt.h.

◆ JWT_VALIDATION_ALG_MISMATCH

#define JWT_VALIDATION_ALG_MISMATCH

Definition at line 80 of file jwt.h.

◆ JWT_VALIDATION_AUD_MISMATCH

#define JWT_VALIDATION_AUD_MISMATCH

Definition at line 85 of file jwt.h.

◆ JWT_VALIDATION_ERROR

#define JWT_VALIDATION_ERROR

Definition at line 79 of file jwt.h.

◆ JWT_VALIDATION_EXPIRED

#define JWT_VALIDATION_EXPIRED

Definition at line 81 of file jwt.h.

◆ JWT_VALIDATION_GRANT_MISMATCH

#define JWT_VALIDATION_GRANT_MISMATCH

Definition at line 87 of file jwt.h.

◆ JWT_VALIDATION_GRANT_MISSING

#define JWT_VALIDATION_GRANT_MISSING

Definition at line 86 of file jwt.h.

◆ JWT_VALIDATION_ISS_MISMATCH

#define JWT_VALIDATION_ISS_MISMATCH

Definition at line 83 of file jwt.h.

◆ JWT_VALIDATION_SUB_MISMATCH

#define JWT_VALIDATION_SUB_MISMATCH

Definition at line 84 of file jwt.h.

◆ JWT_VALIDATION_SUCCESS

#define JWT_VALIDATION_SUCCESS

JWT Validation exception types.

These are bit values.

Definition at line 78 of file jwt.h.

◆ JWT_VALIDATION_TOO_NEW

#define JWT_VALIDATION_TOO_NEW

Definition at line 82 of file jwt.h.

Typedef Documentation

◆ jwt_alg_t

typedef enum jwt_alg jwt_alg_t

JWT algorithm types.

◆ jwt_free_t

typedef void(* jwt_free_t) (void *)

Definition at line 92 of file jwt.h.

◆ jwt_key_p_t

typedef int(* jwt_key_p_t) (const jwt_t *, jwt_key_t *)

Key provider - inspects the JWT to obtain the key used to verify the signature.

Definition at line 101 of file jwt.h.

◆ jwt_malloc_t

typedef void *(* jwt_malloc_t) (size_t)

JWT Memory allocation overrides.

Definition at line 90 of file jwt.h.

◆ jwt_realloc_t

typedef void *(* jwt_realloc_t) (void *, size_t)

Definition at line 91 of file jwt.h.

◆ jwt_t

typedef struct jwt jwt_t

Opaque JWT object.

Definition at line 50 of file jwt.h.

◆ jwt_valid_t

typedef struct jwt_valid jwt_valid_t

Opaque JWT validation object.

Definition at line 53 of file jwt.h.

Enumeration Type Documentation

◆ jwt_alg

enum jwt_alg