source: libabac/abac.h @ d037f54

#ifndef __ABAC_H__
#define __ABAC_H__

#include <stdlib.h>
#include <abac_list.h>
#include <abac_stack.h>
#include <abac_common.h>

typedef struct _abac_context_t abac_context_t;
typedef struct _abac_credential_t abac_credential_t;
typedef struct _abac_aspect_t abac_aspect_t;
typedef struct _abac_attribute_t abac_attribute_t;
typedef struct _abac_id_t abac_id_t;
typedef struct _abac_id_credential_t abac_id_credential_t;

typedef struct _abac_condition_t abac_condition_t;
typedef struct _abac_term_t abac_term_t;
typedef struct _abac_param_list_t abac_param_list_t;

/*
 * ABAC functions, operating on an ABAC context.
 */
abac_context_t *abac_context_new(void);
abac_context_t *abac_context_dup(abac_context_t *ctx);
void abac_context_free(abac_context_t *ctx);

/* see the bottom of the file for possible return codes */
int abac_context_load_id_id(abac_context_t *ctx, abac_id_t *);
int abac_context_load_id_file(abac_context_t *ctx, char *filename, char* keyfielname);
int abac_context_load_id_chunk(abac_context_t *ctx, abac_chunk_t cert);
int abac_context_load_attribute_attribute(abac_context_t *ctx, abac_attribute_t *);
int abac_context_load_attribute_file(abac_context_t *ctx, char *filename);
int abac_context_load_attribute_chunk(abac_context_t *ctx, abac_chunk_t cert);

/* load an entire directory full of certs */
void abac_context_load_directory(abac_context_t *ctx, char *path);

/* abac query, returns a NULL-terminated array of credentials on success, NULL on fail */
abac_credential_t **abac_context_query(abac_context_t *ctx, char *role, char *principal, int *success);

/* get all the credentials from the context, returns a NULL-terminated array of credentials */
abac_credential_t **abac_context_credentials(abac_context_t *ctx);

/* use this to free the results of either of the previous two functions */
void abac_context_credentials_free(abac_credential_t **credentials);

/*
 * Operations on credentials
 */
abac_aspect_t *abac_credential_head(abac_credential_t *cred);
abac_aspect_t *abac_credential_tail(abac_credential_t *cred);
abac_chunk_t abac_credential_attribute_cert(abac_credential_t *cred);
abac_chunk_t abac_credential_issuer_cert(abac_credential_t *cred);
abac_credential_t *abac_credential_lookup(char *cred_string);
abac_id_credential_t *abac_id_credential_lookup(char*);
abac_id_t *abac_id_credential_id(abac_id_credential_t *ptr);

abac_credential_t *abac_credential_dup(abac_credential_t *cred);
abac_attribute_t *abac_credential_attribute(abac_credential_t *cred);
void abac_credential_free(abac_credential_t *cred);

/*
 * Operations on aspect.
 */
abac_aspect_t *abac_aspect_role_principal_create(char *principal_name);
abac_aspect_t *abac_aspect_oset_principal_create(char *principal_name);
abac_aspect_t *abac_aspect_role_create(char *principal_name, char *role_name);
abac_aspect_t *abac_aspect_oset_create(char *principal_name, char *oset_name);

bool abac_aspect_is_principal(abac_aspect_t *ptr);
abac_aspect_t *abac_aspect_dup(abac_aspect_t *ptr);
char *abac_aspect_string(abac_aspect_t *ptr);
bool abac_aspect_is_linking(abac_aspect_t *ptr);
char *abac_aspect_typed_string(abac_aspect_t *ptr);
abac_aspect_t *abac_aspect_add_param(abac_aspect_t *ptr, abac_term_t *param);
abac_aspect_t *abac_aspect_add_linked_param(abac_aspect_t *ptr, abac_term_t *param);
bool abac_aspect_is_object(abac_aspect_t *ptr);
char *abac_aspect_principal_name(abac_aspect_t *ptr);
char* abac_aspect_type_string(abac_aspect_t *ptr);
char *abac_aspect_aspect_name(abac_aspect_t *ptr);
int abac_aspect_aspect_type(abac_aspect_t *ptr);
abac_param_list_t *abac_aspect_aspect_params(abac_aspect_t *ptr);
abac_param_list_t *abac_aspect_linked_role_params(abac_aspect_t *ptr);
abac_aspect_t *abac_aspect_oset_linking_new(char *principal_name, 
                              char *linked_role_name, char *oset_name);
abac_aspect_t *abac_aspect_role_linking_new(char *principal_name,
                              char *linked_role_name, char *role_name);
abac_aspect_t *abac_aspect_role_new(char *principal_name, char *role_name);
abac_aspect_t *abac_aspect_oset_new(char *principal_name, char *oset_name);
abac_aspect_t *abac_aspect_oset_principal_new(char *principal_name);
abac_aspect_t *abac_aspect_role_principal_new(char *principal_name);
abac_aspect_t *abac_aspect_oset_object_new(abac_term_t *object);
char *abac_aspect_linked_role_name(abac_aspect_t *ptr);
char *abac_aspect_object_name(abac_aspect_t *ptr);
char *abac_aspect_object_type(abac_aspect_t *ptr);
abac_list_t *abac_aspect_prereqs(abac_aspect_t *ptr);
char *abac_aspect_string_with_condition(abac_aspect_t *);
char *abac_aspect_typed_string_with_condition(abac_aspect_t *);
char *abac_aspect_principal_principalname(abac_aspect_t *ptr);
void abac_print_aspect_string_with_condition(abac_aspect_t *ptr,FILE *fp);
char *abac_aspect_aspect_param_string(abac_aspect_t *ptr);
abac_aspect_t *abac_aspect_intersection_new(abac_aspect_t *);
abac_aspect_t *abac_aspect_add_intersecting_aspect(abac_aspect_t *ptr, abac_aspect_t *aspect);
abac_id_t *abac_aspect_get_issuer_id(abac_aspect_t *ptr);
int abac_aspect_intersecting_aspect_type(abac_aspect_t *ptr);

/* abac_attribute */
abac_chunk_t abac_attribute_cert_chunk(abac_attribute_t *ptr);
int abac_attribute_write(abac_attribute_t *ptr, FILE *out);
int abac_attribute_bake(abac_attribute_t *ptr);
int abac_attribute_baked(abac_attribute_t *ptr);
abac_aspect_t *abac_attribute_head(abac_attribute_t *ptr);
abac_aspect_t *abac_attribute_tail(abac_attribute_t *ptr);
int abac_attribute_lastone(abac_attribute_t *ptr);
int abac_attribute_create(abac_attribute_t **ret,abac_aspect_t *head, abac_aspect_t *tail,int validity);
abac_attribute_t *abac_attribute_set_head(abac_attribute_t *ptr, abac_aspect_t *);
abac_attribute_t *abac_attribute_add_tail(abac_attribute_t *ptr, abac_aspect_t *);
abac_attribute_t *abac_attribute_dup(abac_attribute_t *ptr);
abac_aspect_t **abac_attribute_tail_vectorized(abac_attribute_t *ptr);
void abac_attribute_free(abac_attribute_t *ptr);
void abac_aspects_free(abac_aspect_t **aspects);

/*
 * Operations on term/params.
 */
abac_condition_t *abac_condition_dup(abac_condition_t *ptr);
void abac_condition_free(abac_condition_t *ptr);
abac_condition_t *abac_condition_from_string(char *string);
abac_condition_t *abac_condition_from_aspect(abac_aspect_t *ptr);
char *abac_condition_typed_string(abac_condition_t *ptr);
char *abac_condition_string(abac_condition_t *ptr);
char *abac_condtype_name(int);
char *abac_term_to_time(char *string);
char *abac_term_typed_string(abac_term_t *ptr);
char *abac_term_string(abac_term_t *ptr);
char *abac_term_type_name(abac_term_t *term);
abac_term_t *abac_term_dup(abac_term_t *ptr);
abac_term_t *abac_term_create(int, char*, abac_condition_t*);
abac_term_t *abac_term_named_create(int, char*);
bool abac_term_is_urn_type(abac_term_t *);
bool abac_term_is_integer_type(abac_term_t *);
int abac_term_type(abac_term_t *term);
abac_term_t *abac_term_add_constraint(abac_term_t *ptr, abac_condition_t *cond);
abac_term_t *abac_term_new(int, char *, char *, abac_aspect_t *);
abac_term_t *abac_term_named_new(int, char *);
void abac_term_free(abac_term_t *);
bool abac_term_is_time_type(abac_term_t *);
bool abac_term_is_string_type(abac_term_t *);
char *abac_term_name(abac_term_t *);
abac_condition_t *abac_term_constraint(abac_term_t *term);
abac_param_list_t *abac_param_list_new(abac_term_t *term);
abac_param_list_t *abac_param_list_free(abac_param_list_t *ptr);
abac_param_list_t *abac_param_list_add_term(abac_param_list_t *, abac_term_t *term);
char* abac_param_list_string(abac_param_list_t *ptr);
char* abac_param_list_string_with_condition(abac_param_list_t *ptr);
char* abac_param_list_typed_string_with_condition(abac_param_list_t *ptr);
abac_term_t **abac_param_list_vectorize(abac_param_list_t *ptr);
void abac_terms_free(abac_term_t **terms);

/* from abac_verifier */
char *abac_cn_with_sha(char*);
char *abac_idtype_with_sha(char*);
abac_stack_t *abac_verifier_dump_creds();
abac_id_credential_t *abac_verifier_add_id_credential(abac_id_t *a_id);

/* from abac_id */
int abac_id_lastone(abac_id_t *ptr);
abac_id_t *abac_id_dup(abac_id_t *id);
void abac_id_free(abac_id_t *id);
char *abac_id_cn(abac_id_t *id);
char *abac_id_keyid(abac_id_t *id);
abac_id_t *abac_id_from_file(char *filename);
int abac_id_load_privkey(abac_id_t *id, char *filename);
int abac_id_write_privkey(abac_id_t *id, FILE *out);
int abac_id_has_privkey(abac_id_t *id);
void abac_id_write_cert(abac_id_t *id, FILE *out);
int abac_id_generate(abac_id_t **ret, char *cn, int validity);
abac_chunk_t abac_id_cert_chunk(abac_id_t *id);

/* from abac_aspect */
void abac_aspect_free(abac_aspect_t *);
void abac_errx(int val, const char *string);

/*
 * Error codes for loading certificates.
 */
#define ABAC_CERT_SUCCESS           0   // certificate loaded, all is well
#define ABAC_CERT_INVALID           -1  // invalid format; also file not found
#define ABAC_CERT_BAD_SIG           -2  // invalid signature
#define ABAC_CERT_MISSING_ISSUER    -3  // missing ID cert that issued the attribute cert
#define ABAC_CERT_BAD_CN            -4  // ID cert is not matching CN=principal format
#define ABAC_CERT_BAD_YAP           -5  // failed to insert into prolog engine

#define ABAC_ID_SUCCESS                     0
#define ABAC_ID_GENERATE_INVALID_CN        -1
#define ABAC_ID_GENERATE_INVALID_VALIDITY  -2

#define ABAC_ATTRIBUTE_SUCCESS              0
#define ABAC_ATTRIBUTE_INVALID_ROLE        -1
#define ABAC_ATTRIBUTE_INVALID_VALIDITY    -2
#define ABAC_ATTRIBUTE_ISSUER_NOKEY        -3


#define USE(evalue) ((getenv(evalue)!=NULL)?1:0)

#endif /* __ABAC_H__ */