diff options
Diffstat (limited to 'extension/openssl/store.h')
| -rw-r--r-- | extension/openssl/store.h | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/extension/openssl/store.h b/extension/openssl/store.h new file mode 100644 index 0000000..3c1445e --- /dev/null +++ b/extension/openssl/store.h @@ -0,0 +1,369 @@ +/* + * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#ifndef OPENSSL_STORE_H +# define OPENSSL_STORE_H +# pragma once + +# include <openssl/macros.h> +# ifndef OPENSSL_NO_DEPRECATED_3_0 +# define HEADER_OSSL_STORE_H +# endif + +# include <stdarg.h> +# include <openssl/types.h> +# include <openssl/pem.h> +# include <openssl/storeerr.h> + +# ifdef __cplusplus +extern "C" { +# endif + +/*- + * The main OSSL_STORE functions. + * ------------------------------ + * + * These allow applications to open a channel to a resource with supported + * data (keys, certs, crls, ...), read the data a piece at a time and decide + * what to do with it, and finally close. + */ + +typedef struct ossl_store_ctx_st OSSL_STORE_CTX; + +/* + * Typedef for the OSSL_STORE_INFO post processing callback. This can be used + * to massage the given OSSL_STORE_INFO, or to drop it entirely (by returning + * NULL). + */ +typedef OSSL_STORE_INFO *(*OSSL_STORE_post_process_info_fn)(OSSL_STORE_INFO *, + void *); + +/* + * Open a channel given a URI. The given UI method will be used any time the + * loader needs extra input, for example when a password or pin is needed, and + * will be passed the same user data every time it's needed in this context. + * + * Returns a context reference which represents the channel to communicate + * through. + */ +OSSL_STORE_CTX * +OSSL_STORE_open(const char *uri, const UI_METHOD *ui_method, void *ui_data, + OSSL_STORE_post_process_info_fn post_process, + void *post_process_data); +OSSL_STORE_CTX * +OSSL_STORE_open_ex(const char *uri, OSSL_LIB_CTX *libctx, const char *propq, + const UI_METHOD *ui_method, void *ui_data, + const OSSL_PARAM params[], + OSSL_STORE_post_process_info_fn post_process, + void *post_process_data); + +/* + * Control / fine tune the OSSL_STORE channel. |cmd| determines what is to be + * done, and depends on the underlying loader (use OSSL_STORE_get0_scheme to + * determine which loader is used), except for common commands (see below). + * Each command takes different arguments. + */ +# ifndef OPENSSL_NO_DEPRECATED_3_0 +OSSL_DEPRECATEDIN_3_0 int OSSL_STORE_ctrl(OSSL_STORE_CTX *ctx, int cmd, + ... /* args */); +OSSL_DEPRECATEDIN_3_0 int OSSL_STORE_vctrl(OSSL_STORE_CTX *ctx, int cmd, + va_list args); +# endif + +# ifndef OPENSSL_NO_DEPRECATED_3_0 + +/* + * Common ctrl commands that different loaders may choose to support. + */ +/* int on = 0 or 1; STORE_ctrl(ctx, STORE_C_USE_SECMEM, &on); */ +# define OSSL_STORE_C_USE_SECMEM 1 +/* Where custom commands start */ +# define OSSL_STORE_C_CUSTOM_START 100 + +# endif + +/* + * Read one data item (a key, a cert, a CRL) that is supported by the OSSL_STORE + * functionality, given a context. + * Returns a OSSL_STORE_INFO pointer, from which OpenSSL typed data can be + * extracted with OSSL_STORE_INFO_get0_PKEY(), OSSL_STORE_INFO_get0_CERT(), ... + * NULL is returned on error, which may include that the data found at the URI + * can't be figured out for certain or is ambiguous. + */ +OSSL_STORE_INFO *OSSL_STORE_load(OSSL_STORE_CTX *ctx); + +/* + * Check if end of data (end of file) is reached + * Returns 1 on end, 0 otherwise. + */ +int OSSL_STORE_eof(OSSL_STORE_CTX *ctx); + +/* + * Check if an error occurred + * Returns 1 if it did, 0 otherwise. + */ +int OSSL_STORE_error(OSSL_STORE_CTX *ctx); + +/* + * Close the channel + * Returns 1 on success, 0 on error. + */ +int OSSL_STORE_close(OSSL_STORE_CTX *ctx); + +/* + * Attach to a BIO. This works like OSSL_STORE_open() except it takes a + * BIO instead of a uri, along with a scheme to use when reading. + * The given UI method will be used any time the loader needs extra input, + * for example when a password or pin is needed, and will be passed the + * same user data every time it's needed in this context. + * + * Returns a context reference which represents the channel to communicate + * through. + * + * Note that this function is considered unsafe, all depending on what the + * BIO actually reads. + */ +OSSL_STORE_CTX *OSSL_STORE_attach(BIO *bio, const char *scheme, + OSSL_LIB_CTX *libctx, const char *propq, + const UI_METHOD *ui_method, void *ui_data, + const OSSL_PARAM params[], + OSSL_STORE_post_process_info_fn post_process, + void *post_process_data); + +/*- + * Extracting OpenSSL types from and creating new OSSL_STORE_INFOs + * --------------------------------------------------------------- + */ + +/* + * Types of data that can be ossl_stored in a OSSL_STORE_INFO. + * OSSL_STORE_INFO_NAME is typically found when getting a listing of + * available "files" / "tokens" / what have you. + */ +# define OSSL_STORE_INFO_NAME 1 /* char * */ +# define OSSL_STORE_INFO_PARAMS 2 /* EVP_PKEY * */ +# define OSSL_STORE_INFO_PUBKEY 3 /* EVP_PKEY * */ +# define OSSL_STORE_INFO_PKEY 4 /* EVP_PKEY * */ +# define OSSL_STORE_INFO_CERT 5 /* X509 * */ +# define OSSL_STORE_INFO_CRL 6 /* X509_CRL * */ + +/* + * Functions to generate OSSL_STORE_INFOs, one function for each type we + * support having in them, as well as a generic constructor. + * + * In all cases, ownership of the object is transferred to the OSSL_STORE_INFO + * and will therefore be freed when the OSSL_STORE_INFO is freed. + */ +OSSL_STORE_INFO *OSSL_STORE_INFO_new(int type, void *data); +OSSL_STORE_INFO *OSSL_STORE_INFO_new_NAME(char *name); +int OSSL_STORE_INFO_set0_NAME_description(OSSL_STORE_INFO *info, char *desc); +OSSL_STORE_INFO *OSSL_STORE_INFO_new_PARAMS(EVP_PKEY *params); +OSSL_STORE_INFO *OSSL_STORE_INFO_new_PUBKEY(EVP_PKEY *pubkey); +OSSL_STORE_INFO *OSSL_STORE_INFO_new_PKEY(EVP_PKEY *pkey); +OSSL_STORE_INFO *OSSL_STORE_INFO_new_CERT(X509 *x509); +OSSL_STORE_INFO *OSSL_STORE_INFO_new_CRL(X509_CRL *crl); + +/* + * Functions to try to extract data from a OSSL_STORE_INFO. + */ +int OSSL_STORE_INFO_get_type(const OSSL_STORE_INFO *info); +void *OSSL_STORE_INFO_get0_data(int type, const OSSL_STORE_INFO *info); +const char *OSSL_STORE_INFO_get0_NAME(const OSSL_STORE_INFO *info); +char *OSSL_STORE_INFO_get1_NAME(const OSSL_STORE_INFO *info); +const char *OSSL_STORE_INFO_get0_NAME_description(const OSSL_STORE_INFO *info); +char *OSSL_STORE_INFO_get1_NAME_description(const OSSL_STORE_INFO *info); +EVP_PKEY *OSSL_STORE_INFO_get0_PARAMS(const OSSL_STORE_INFO *info); +EVP_PKEY *OSSL_STORE_INFO_get1_PARAMS(const OSSL_STORE_INFO *info); +EVP_PKEY *OSSL_STORE_INFO_get0_PUBKEY(const OSSL_STORE_INFO *info); +EVP_PKEY *OSSL_STORE_INFO_get1_PUBKEY(const OSSL_STORE_INFO *info); +EVP_PKEY *OSSL_STORE_INFO_get0_PKEY(const OSSL_STORE_INFO *info); +EVP_PKEY *OSSL_STORE_INFO_get1_PKEY(const OSSL_STORE_INFO *info); +X509 *OSSL_STORE_INFO_get0_CERT(const OSSL_STORE_INFO *info); +X509 *OSSL_STORE_INFO_get1_CERT(const OSSL_STORE_INFO *info); +X509_CRL *OSSL_STORE_INFO_get0_CRL(const OSSL_STORE_INFO *info); +X509_CRL *OSSL_STORE_INFO_get1_CRL(const OSSL_STORE_INFO *info); + +const char *OSSL_STORE_INFO_type_string(int type); + +/* + * Free the OSSL_STORE_INFO + */ +void OSSL_STORE_INFO_free(OSSL_STORE_INFO *info); + + +/*- + * Functions to construct a search URI from a base URI and search criteria + * ----------------------------------------------------------------------- + */ + +/* OSSL_STORE search types */ +# define OSSL_STORE_SEARCH_BY_NAME 1 /* subject in certs, issuer in CRLs */ +# define OSSL_STORE_SEARCH_BY_ISSUER_SERIAL 2 +# define OSSL_STORE_SEARCH_BY_KEY_FINGERPRINT 3 +# define OSSL_STORE_SEARCH_BY_ALIAS 4 + +/* To check what search types the scheme handler supports */ +int OSSL_STORE_supports_search(OSSL_STORE_CTX *ctx, int search_type); + +/* Search term constructors */ +/* + * The input is considered to be owned by the caller, and must therefore + * remain present throughout the lifetime of the returned OSSL_STORE_SEARCH + */ +OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_name(X509_NAME *name); +OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_issuer_serial(X509_NAME *name, + const ASN1_INTEGER + *serial); +OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_key_fingerprint(const EVP_MD *digest, + const unsigned char + *bytes, size_t len); +OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_alias(const char *alias); + +/* Search term destructor */ +void OSSL_STORE_SEARCH_free(OSSL_STORE_SEARCH *search); + +/* Search term accessors */ +int OSSL_STORE_SEARCH_get_type(const OSSL_STORE_SEARCH *criterion); +X509_NAME *OSSL_STORE_SEARCH_get0_name(const OSSL_STORE_SEARCH *criterion); +const ASN1_INTEGER *OSSL_STORE_SEARCH_get0_serial(const OSSL_STORE_SEARCH + *criterion); +const unsigned char *OSSL_STORE_SEARCH_get0_bytes(const OSSL_STORE_SEARCH + *criterion, size_t *length); +const char *OSSL_STORE_SEARCH_get0_string(const OSSL_STORE_SEARCH *criterion); +const EVP_MD *OSSL_STORE_SEARCH_get0_digest(const OSSL_STORE_SEARCH *criterion); + +/* + * Add search criterion and expected return type (which can be unspecified) + * to the loading channel. This MUST happen before the first OSSL_STORE_load(). + */ +int OSSL_STORE_expect(OSSL_STORE_CTX *ctx, int expected_type); +int OSSL_STORE_find(OSSL_STORE_CTX *ctx, const OSSL_STORE_SEARCH *search); + + +/*- + * Function to fetch a loader and extract data from it + * --------------------------------------------------- + */ + +typedef struct ossl_store_loader_st OSSL_STORE_LOADER; + +OSSL_STORE_LOADER *OSSL_STORE_LOADER_fetch(OSSL_LIB_CTX *libctx, + const char *scheme, + const char *properties); +int OSSL_STORE_LOADER_up_ref(OSSL_STORE_LOADER *loader); +void OSSL_STORE_LOADER_free(OSSL_STORE_LOADER *loader); +const OSSL_PROVIDER *OSSL_STORE_LOADER_get0_provider(const OSSL_STORE_LOADER * + loader); +const char *OSSL_STORE_LOADER_get0_properties(const OSSL_STORE_LOADER *loader); +const char *OSSL_STORE_LOADER_get0_description(const OSSL_STORE_LOADER *loader); +int OSSL_STORE_LOADER_is_a(const OSSL_STORE_LOADER *loader, + const char *scheme); +void OSSL_STORE_LOADER_do_all_provided(OSSL_LIB_CTX *libctx, + void (*fn)(OSSL_STORE_LOADER *loader, + void *arg), + void *arg); +int OSSL_STORE_LOADER_names_do_all(const OSSL_STORE_LOADER *loader, + void (*fn)(const char *name, void *data), + void *data); + +/*- + * Function to register a loader for the given URI scheme. + * ------------------------------------------------------- + * + * The loader receives all the main components of an URI except for the + * scheme. + */ + +# ifndef OPENSSL_NO_DEPRECATED_3_0 + +/* struct ossl_store_loader_ctx_st is defined differently by each loader */ +typedef struct ossl_store_loader_ctx_st OSSL_STORE_LOADER_CTX; +typedef OSSL_STORE_LOADER_CTX *(*OSSL_STORE_open_fn) + (const OSSL_STORE_LOADER *loader, const char *uri, + const UI_METHOD *ui_method, void *ui_data); +typedef OSSL_STORE_LOADER_CTX *(*OSSL_STORE_open_ex_fn) + (const OSSL_STORE_LOADER *loader, + const char *uri, OSSL_LIB_CTX *libctx, const char *propq, + const UI_METHOD *ui_method, void *ui_data); + +typedef OSSL_STORE_LOADER_CTX *(*OSSL_STORE_attach_fn) + (const OSSL_STORE_LOADER *loader, BIO *bio, + OSSL_LIB_CTX *libctx, const char *propq, + const UI_METHOD *ui_method, void *ui_data); +typedef int (*OSSL_STORE_ctrl_fn) + (OSSL_STORE_LOADER_CTX *ctx, int cmd, va_list args); +typedef int (*OSSL_STORE_expect_fn) + (OSSL_STORE_LOADER_CTX *ctx, int expected); +typedef int (*OSSL_STORE_find_fn) + (OSSL_STORE_LOADER_CTX *ctx, const OSSL_STORE_SEARCH *criteria); +typedef OSSL_STORE_INFO *(*OSSL_STORE_load_fn) + (OSSL_STORE_LOADER_CTX *ctx, const UI_METHOD *ui_method, void *ui_data); +typedef int (*OSSL_STORE_eof_fn)(OSSL_STORE_LOADER_CTX *ctx); +typedef int (*OSSL_STORE_error_fn)(OSSL_STORE_LOADER_CTX *ctx); +typedef int (*OSSL_STORE_close_fn)(OSSL_STORE_LOADER_CTX *ctx); + +# endif +# ifndef OPENSSL_NO_DEPRECATED_3_0 +OSSL_DEPRECATEDIN_3_0 +OSSL_STORE_LOADER *OSSL_STORE_LOADER_new(ENGINE *e, const char *scheme); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_open(OSSL_STORE_LOADER *loader, + OSSL_STORE_open_fn open_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_open_ex(OSSL_STORE_LOADER *loader, + OSSL_STORE_open_ex_fn open_ex_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_attach(OSSL_STORE_LOADER *loader, + OSSL_STORE_attach_fn attach_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_ctrl(OSSL_STORE_LOADER *loader, + OSSL_STORE_ctrl_fn ctrl_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_expect(OSSL_STORE_LOADER *loader, + OSSL_STORE_expect_fn expect_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_find(OSSL_STORE_LOADER *loader, + OSSL_STORE_find_fn find_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_load(OSSL_STORE_LOADER *loader, + OSSL_STORE_load_fn load_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_eof(OSSL_STORE_LOADER *loader, + OSSL_STORE_eof_fn eof_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_error(OSSL_STORE_LOADER *loader, + OSSL_STORE_error_fn error_function); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_LOADER_set_close(OSSL_STORE_LOADER *loader, + OSSL_STORE_close_fn close_function); +OSSL_DEPRECATEDIN_3_0 +const ENGINE *OSSL_STORE_LOADER_get0_engine(const OSSL_STORE_LOADER *loader); +OSSL_DEPRECATEDIN_3_0 +const char * OSSL_STORE_LOADER_get0_scheme(const OSSL_STORE_LOADER *loader); +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_register_loader(OSSL_STORE_LOADER *loader); +OSSL_DEPRECATEDIN_3_0 +OSSL_STORE_LOADER *OSSL_STORE_unregister_loader(const char *scheme); +# endif + +/*- + * Functions to list STORE loaders + * ------------------------------- + */ +# ifndef OPENSSL_NO_DEPRECATED_3_0 +OSSL_DEPRECATEDIN_3_0 +int OSSL_STORE_do_all_loaders(void (*do_function)(const OSSL_STORE_LOADER *loader, + void *do_arg), + void *do_arg); +# endif + +# ifdef __cplusplus +} +# endif +#endif |