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Diffstat (limited to 'include/mbedtls/x509.h')
| -rw-r--r-- | include/mbedtls/x509.h | 550 |
1 files changed, 550 insertions, 0 deletions
diff --git a/include/mbedtls/x509.h b/include/mbedtls/x509.h new file mode 100644 index 0000000..e2e0667 --- /dev/null +++ b/include/mbedtls/x509.h @@ -0,0 +1,550 @@ +/** + * \file x509.h + * + * \brief X.509 generic defines and structures + */ +/* + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later + */ +#ifndef MBEDTLS_X509_H +#define MBEDTLS_X509_H +#include "mbedtls/private_access.h" + +#include "mbedtls/build_info.h" + +#include "mbedtls/asn1.h" +#include "mbedtls/pk.h" + +#if defined(MBEDTLS_RSA_C) +#include "mbedtls/rsa.h" +#endif + +/** + * \addtogroup x509_module + * \{ + */ + +#if !defined(MBEDTLS_X509_MAX_INTERMEDIATE_CA) +/** + * Maximum number of intermediate CAs in a verification chain. + * That is, maximum length of the chain, excluding the end-entity certificate + * and the trusted root certificate. + * + * Set this to a low value to prevent an adversary from making you waste + * resources verifying an overlong certificate chain. + */ +#define MBEDTLS_X509_MAX_INTERMEDIATE_CA 8 +#endif + +/** + * \name X509 Error codes + * \{ + */ +/** Unavailable feature, e.g. RSA hashing/encryption combination. */ +#define MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE -0x2080 +/** Requested OID is unknown. */ +#define MBEDTLS_ERR_X509_UNKNOWN_OID -0x2100 +/** The CRT/CRL/CSR format is invalid, e.g. different type expected. */ +#define MBEDTLS_ERR_X509_INVALID_FORMAT -0x2180 +/** The CRT/CRL/CSR version element is invalid. */ +#define MBEDTLS_ERR_X509_INVALID_VERSION -0x2200 +/** The serial tag or value is invalid. */ +#define MBEDTLS_ERR_X509_INVALID_SERIAL -0x2280 +/** The algorithm tag or value is invalid. */ +#define MBEDTLS_ERR_X509_INVALID_ALG -0x2300 +/** The name tag or value is invalid. */ +#define MBEDTLS_ERR_X509_INVALID_NAME -0x2380 +/** The date tag or value is invalid. */ +#define MBEDTLS_ERR_X509_INVALID_DATE -0x2400 +/** The signature tag or value invalid. */ +#define MBEDTLS_ERR_X509_INVALID_SIGNATURE -0x2480 +/** The extension tag or value is invalid. */ +#define MBEDTLS_ERR_X509_INVALID_EXTENSIONS -0x2500 +/** CRT/CRL/CSR has an unsupported version number. */ +#define MBEDTLS_ERR_X509_UNKNOWN_VERSION -0x2580 +/** Signature algorithm (oid) is unsupported. */ +#define MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG -0x2600 +/** Signature algorithms do not match. (see \c ::mbedtls_x509_crt sig_oid) */ +#define MBEDTLS_ERR_X509_SIG_MISMATCH -0x2680 +/** Certificate verification failed, e.g. CRL, CA or signature check failed. */ +#define MBEDTLS_ERR_X509_CERT_VERIFY_FAILED -0x2700 +/** Format not recognized as DER or PEM. */ +#define MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT -0x2780 +/** Input invalid. */ +#define MBEDTLS_ERR_X509_BAD_INPUT_DATA -0x2800 +/** Allocation of memory failed. */ +#define MBEDTLS_ERR_X509_ALLOC_FAILED -0x2880 +/** Read/write of file failed. */ +#define MBEDTLS_ERR_X509_FILE_IO_ERROR -0x2900 +/** Destination buffer is too small. */ +#define MBEDTLS_ERR_X509_BUFFER_TOO_SMALL -0x2980 +/** A fatal error occurred, eg the chain is too long or the vrfy callback failed. */ +#define MBEDTLS_ERR_X509_FATAL_ERROR -0x3000 +/** \} name X509 Error codes */ + +/** + * \name X509 Verify codes + * \{ + */ +/* Reminder: update x509_crt_verify_strings[] in library/x509_crt.c */ +#define MBEDTLS_X509_BADCERT_EXPIRED 0x01 /**< The certificate validity has expired. */ +#define MBEDTLS_X509_BADCERT_REVOKED 0x02 /**< The certificate has been revoked (is on a CRL). */ +#define MBEDTLS_X509_BADCERT_CN_MISMATCH 0x04 /**< The certificate Common Name (CN) does not match with the expected CN. */ +#define MBEDTLS_X509_BADCERT_NOT_TRUSTED 0x08 /**< The certificate is not correctly signed by the trusted CA. */ +#define MBEDTLS_X509_BADCRL_NOT_TRUSTED 0x10 /**< The CRL is not correctly signed by the trusted CA. */ +#define MBEDTLS_X509_BADCRL_EXPIRED 0x20 /**< The CRL is expired. */ +#define MBEDTLS_X509_BADCERT_MISSING 0x40 /**< Certificate was missing. */ +#define MBEDTLS_X509_BADCERT_SKIP_VERIFY 0x80 /**< Certificate verification was skipped. */ +#define MBEDTLS_X509_BADCERT_OTHER 0x0100 /**< Other reason (can be used by verify callback) */ +#define MBEDTLS_X509_BADCERT_FUTURE 0x0200 /**< The certificate validity starts in the future. */ +#define MBEDTLS_X509_BADCRL_FUTURE 0x0400 /**< The CRL is from the future */ +#define MBEDTLS_X509_BADCERT_KEY_USAGE 0x0800 /**< Usage does not match the keyUsage extension. */ +#define MBEDTLS_X509_BADCERT_EXT_KEY_USAGE 0x1000 /**< Usage does not match the extendedKeyUsage extension. */ +#define MBEDTLS_X509_BADCERT_NS_CERT_TYPE 0x2000 /**< Usage does not match the nsCertType extension. */ +#define MBEDTLS_X509_BADCERT_BAD_MD 0x4000 /**< The certificate is signed with an unacceptable hash. */ +#define MBEDTLS_X509_BADCERT_BAD_PK 0x8000 /**< The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA). */ +#define MBEDTLS_X509_BADCERT_BAD_KEY 0x010000 /**< The certificate is signed with an unacceptable key (eg bad curve, RSA too short). */ +#define MBEDTLS_X509_BADCRL_BAD_MD 0x020000 /**< The CRL is signed with an unacceptable hash. */ +#define MBEDTLS_X509_BADCRL_BAD_PK 0x040000 /**< The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA). */ +#define MBEDTLS_X509_BADCRL_BAD_KEY 0x080000 /**< The CRL is signed with an unacceptable key (eg bad curve, RSA too short). */ + +/** \} name X509 Verify codes */ +/** \} addtogroup x509_module */ + +/* + * X.509 v3 Subject Alternative Name types. + * otherName [0] OtherName, + * rfc822Name [1] IA5String, + * dNSName [2] IA5String, + * x400Address [3] ORAddress, + * directoryName [4] Name, + * ediPartyName [5] EDIPartyName, + * uniformResourceIdentifier [6] IA5String, + * iPAddress [7] OCTET STRING, + * registeredID [8] OBJECT IDENTIFIER + */ +#define MBEDTLS_X509_SAN_OTHER_NAME 0 +#define MBEDTLS_X509_SAN_RFC822_NAME 1 +#define MBEDTLS_X509_SAN_DNS_NAME 2 +#define MBEDTLS_X509_SAN_X400_ADDRESS_NAME 3 +#define MBEDTLS_X509_SAN_DIRECTORY_NAME 4 +#define MBEDTLS_X509_SAN_EDI_PARTY_NAME 5 +#define MBEDTLS_X509_SAN_UNIFORM_RESOURCE_IDENTIFIER 6 +#define MBEDTLS_X509_SAN_IP_ADDRESS 7 +#define MBEDTLS_X509_SAN_REGISTERED_ID 8 + +/* + * X.509 v3 Key Usage Extension flags + * Reminder: update mbedtls_x509_info_key_usage() when adding new flags. + */ +#define MBEDTLS_X509_KU_DIGITAL_SIGNATURE (0x80) /* bit 0 */ +#define MBEDTLS_X509_KU_NON_REPUDIATION (0x40) /* bit 1 */ +#define MBEDTLS_X509_KU_KEY_ENCIPHERMENT (0x20) /* bit 2 */ +#define MBEDTLS_X509_KU_DATA_ENCIPHERMENT (0x10) /* bit 3 */ +#define MBEDTLS_X509_KU_KEY_AGREEMENT (0x08) /* bit 4 */ +#define MBEDTLS_X509_KU_KEY_CERT_SIGN (0x04) /* bit 5 */ +#define MBEDTLS_X509_KU_CRL_SIGN (0x02) /* bit 6 */ +#define MBEDTLS_X509_KU_ENCIPHER_ONLY (0x01) /* bit 7 */ +#define MBEDTLS_X509_KU_DECIPHER_ONLY (0x8000) /* bit 8 */ + +/* + * Netscape certificate types + * (http://www.mozilla.org/projects/security/pki/nss/tech-notes/tn3.html) + */ + +#define MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT (0x80) /* bit 0 */ +#define MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER (0x40) /* bit 1 */ +#define MBEDTLS_X509_NS_CERT_TYPE_EMAIL (0x20) /* bit 2 */ +#define MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING (0x10) /* bit 3 */ +#define MBEDTLS_X509_NS_CERT_TYPE_RESERVED (0x08) /* bit 4 */ +#define MBEDTLS_X509_NS_CERT_TYPE_SSL_CA (0x04) /* bit 5 */ +#define MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA (0x02) /* bit 6 */ +#define MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA (0x01) /* bit 7 */ + +/* + * X.509 extension types + * + * Comments refer to the status for using certificates. Status can be + * different for writing certificates or reading CRLs or CSRs. + * + * Those are defined in oid.h as oid.c needs them in a data structure. Since + * these were previously defined here, let's have aliases for compatibility. + */ +#define MBEDTLS_X509_EXT_AUTHORITY_KEY_IDENTIFIER MBEDTLS_OID_X509_EXT_AUTHORITY_KEY_IDENTIFIER +#define MBEDTLS_X509_EXT_SUBJECT_KEY_IDENTIFIER MBEDTLS_OID_X509_EXT_SUBJECT_KEY_IDENTIFIER +#define MBEDTLS_X509_EXT_KEY_USAGE MBEDTLS_OID_X509_EXT_KEY_USAGE +#define MBEDTLS_X509_EXT_CERTIFICATE_POLICIES MBEDTLS_OID_X509_EXT_CERTIFICATE_POLICIES +#define MBEDTLS_X509_EXT_POLICY_MAPPINGS MBEDTLS_OID_X509_EXT_POLICY_MAPPINGS +#define MBEDTLS_X509_EXT_SUBJECT_ALT_NAME MBEDTLS_OID_X509_EXT_SUBJECT_ALT_NAME /* Supported (DNS) */ +#define MBEDTLS_X509_EXT_ISSUER_ALT_NAME MBEDTLS_OID_X509_EXT_ISSUER_ALT_NAME +#define MBEDTLS_X509_EXT_SUBJECT_DIRECTORY_ATTRS MBEDTLS_OID_X509_EXT_SUBJECT_DIRECTORY_ATTRS +#define MBEDTLS_X509_EXT_BASIC_CONSTRAINTS MBEDTLS_OID_X509_EXT_BASIC_CONSTRAINTS /* Supported */ +#define MBEDTLS_X509_EXT_NAME_CONSTRAINTS MBEDTLS_OID_X509_EXT_NAME_CONSTRAINTS +#define MBEDTLS_X509_EXT_POLICY_CONSTRAINTS MBEDTLS_OID_X509_EXT_POLICY_CONSTRAINTS +#define MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE MBEDTLS_OID_X509_EXT_EXTENDED_KEY_USAGE +#define MBEDTLS_X509_EXT_CRL_DISTRIBUTION_POINTS MBEDTLS_OID_X509_EXT_CRL_DISTRIBUTION_POINTS +#define MBEDTLS_X509_EXT_INIHIBIT_ANYPOLICY MBEDTLS_OID_X509_EXT_INIHIBIT_ANYPOLICY +#define MBEDTLS_X509_EXT_FRESHEST_CRL MBEDTLS_OID_X509_EXT_FRESHEST_CRL +#define MBEDTLS_X509_EXT_NS_CERT_TYPE MBEDTLS_OID_X509_EXT_NS_CERT_TYPE + +/* + * Storage format identifiers + * Recognized formats: PEM and DER + */ +#define MBEDTLS_X509_FORMAT_DER 1 +#define MBEDTLS_X509_FORMAT_PEM 2 + +#define MBEDTLS_X509_MAX_DN_NAME_SIZE 256 /**< Maximum value size of a DN entry */ + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \addtogroup x509_module + * \{ */ + +/** + * \name Structures for parsing X.509 certificates, CRLs and CSRs + * \{ + */ + +/** + * Type-length-value structure that allows for ASN1 using DER. + */ +typedef mbedtls_asn1_buf mbedtls_x509_buf; + +/** + * Container for ASN1 bit strings. + */ +typedef mbedtls_asn1_bitstring mbedtls_x509_bitstring; + +/** + * Container for ASN1 named information objects. + * It allows for Relative Distinguished Names (e.g. cn=localhost,ou=code,etc.). + */ +typedef mbedtls_asn1_named_data mbedtls_x509_name; + +/** + * Container for a sequence of ASN.1 items + */ +typedef mbedtls_asn1_sequence mbedtls_x509_sequence; + +/* + * Container for the fields of the Authority Key Identifier object + */ +typedef struct mbedtls_x509_authority { + mbedtls_x509_buf keyIdentifier; + mbedtls_x509_sequence authorityCertIssuer; + mbedtls_x509_buf authorityCertSerialNumber; + mbedtls_x509_buf raw; +} +mbedtls_x509_authority; + +/** Container for date and time (precision in seconds). */ +typedef struct mbedtls_x509_time { + int year, mon, day; /**< Date. */ + int hour, min, sec; /**< Time. */ +} +mbedtls_x509_time; + +/** + * From RFC 5280 section 4.2.1.6: + * OtherName ::= SEQUENCE { + * type-id OBJECT IDENTIFIER, + * value [0] EXPLICIT ANY DEFINED BY type-id } + * + * Future versions of the library may add new fields to this structure or + * to its embedded union and structure. + */ +typedef struct mbedtls_x509_san_other_name { + /** + * The type_id is an OID as defined in RFC 5280. + * To check the value of the type id, you should use + * \p MBEDTLS_OID_CMP with a known OID mbedtls_x509_buf. + */ + mbedtls_x509_buf type_id; /**< The type id. */ + union { + /** + * From RFC 4108 section 5: + * HardwareModuleName ::= SEQUENCE { + * hwType OBJECT IDENTIFIER, + * hwSerialNum OCTET STRING } + */ + struct { + mbedtls_x509_buf oid; /**< The object identifier. */ + mbedtls_x509_buf val; /**< The named value. */ + } + hardware_module_name; + } + value; +} +mbedtls_x509_san_other_name; + +/** + * A structure for holding the parsed Subject Alternative Name, + * according to type. + * + * Future versions of the library may add new fields to this structure or + * to its embedded union and structure. + */ +typedef struct mbedtls_x509_subject_alternative_name { + int type; /**< The SAN type, value of MBEDTLS_X509_SAN_XXX. */ + union { + mbedtls_x509_san_other_name other_name; + mbedtls_x509_name directory_name; + mbedtls_x509_buf unstructured_name; /**< The buffer for the unstructured types. rfc822Name, dnsName and uniformResourceIdentifier are currently supported. */ + } + san; /**< A union of the supported SAN types */ +} +mbedtls_x509_subject_alternative_name; + +typedef struct mbedtls_x509_san_list { + mbedtls_x509_subject_alternative_name node; + struct mbedtls_x509_san_list *next; +} +mbedtls_x509_san_list; + +/** \} name Structures for parsing X.509 certificates, CRLs and CSRs */ + +/** + * \brief Store the certificate DN in printable form into buf; + * no more than size characters will be written. + * + * \param buf Buffer to write to + * \param size Maximum size of buffer + * \param dn The X509 name to represent + * + * \return The length of the string written (not including the + * terminated nul byte), or a negative error code. + */ +int mbedtls_x509_dn_gets(char *buf, size_t size, const mbedtls_x509_name *dn); + +/** + * \brief Return the next relative DN in an X509 name. + * + * \note Intended use is to compare function result to dn->next + * in order to detect boundaries of multi-valued RDNs. + * + * \param dn Current node in the X509 name + * + * \return Pointer to the first attribute-value pair of the + * next RDN in sequence, or NULL if end is reached. + */ +static inline mbedtls_x509_name *mbedtls_x509_dn_get_next( + mbedtls_x509_name *dn) +{ + while (dn->MBEDTLS_PRIVATE(next_merged) && dn->next != NULL) { + dn = dn->next; + } + return dn->next; +} + +/** + * \brief Store the certificate serial in printable form into buf; + * no more than size characters will be written. + * + * \param buf Buffer to write to + * \param size Maximum size of buffer + * \param serial The X509 serial to represent + * + * \return The length of the string written (not including the + * terminated nul byte), or a negative error code. + */ +int mbedtls_x509_serial_gets(char *buf, size_t size, const mbedtls_x509_buf *serial); + +/** + * \brief Compare pair of mbedtls_x509_time. + * + * \param t1 mbedtls_x509_time to compare + * \param t2 mbedtls_x509_time to compare + * + * \return < 0 if t1 is before t2 + * 0 if t1 equals t2 + * > 0 if t1 is after t2 + */ +int mbedtls_x509_time_cmp(const mbedtls_x509_time *t1, const mbedtls_x509_time *t2); + +#if defined(MBEDTLS_HAVE_TIME_DATE) +/** + * \brief Fill mbedtls_x509_time with provided mbedtls_time_t. + * + * \param tt mbedtls_time_t to convert + * \param now mbedtls_x509_time to fill with converted mbedtls_time_t + * + * \return \c 0 on success + * \return A non-zero return value on failure. + */ +int mbedtls_x509_time_gmtime(mbedtls_time_t tt, mbedtls_x509_time *now); +#endif /* MBEDTLS_HAVE_TIME_DATE */ + +/** + * \brief Check a given mbedtls_x509_time against the system time + * and tell if it's in the past. + * + * \note Intended usage is "if( is_past( valid_to ) ) ERROR". + * Hence the return value of 1 if on internal errors. + * + * \param to mbedtls_x509_time to check + * + * \return 1 if the given time is in the past or an error occurred, + * 0 otherwise. + */ +int mbedtls_x509_time_is_past(const mbedtls_x509_time *to); + +/** + * \brief Check a given mbedtls_x509_time against the system time + * and tell if it's in the future. + * + * \note Intended usage is "if( is_future( valid_from ) ) ERROR". + * Hence the return value of 1 if on internal errors. + * + * \param from mbedtls_x509_time to check + * + * \return 1 if the given time is in the future or an error occurred, + * 0 otherwise. + */ +int mbedtls_x509_time_is_future(const mbedtls_x509_time *from); + +/** + * \brief This function parses an item in the SubjectAlternativeNames + * extension. Please note that this function might allocate + * additional memory for a subject alternative name, thus + * mbedtls_x509_free_subject_alt_name has to be called + * to dispose of this additional memory afterwards. + * + * \param san_buf The buffer holding the raw data item of the subject + * alternative name. + * \param san The target structure to populate with the parsed presentation + * of the subject alternative name encoded in \p san_buf. + * + * \note Supported GeneralName types, as defined in RFC 5280: + * "rfc822Name", "dnsName", "directoryName", + * "uniformResourceIdentifier" and "hardware_module_name" + * of type "otherName", as defined in RFC 4108. + * + * \note This function should be called on a single raw data of + * subject alternative name. For example, after successful + * certificate parsing, one must iterate on every item in the + * \c crt->subject_alt_names sequence, and pass it to + * this function. + * + * \warning The target structure contains pointers to the raw data of the + * parsed certificate, and its lifetime is restricted by the + * lifetime of the certificate. + * + * \return \c 0 on success + * \return #MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE for an unsupported + * SAN type. + * \return Another negative value for any other failure. + */ +int mbedtls_x509_parse_subject_alt_name(const mbedtls_x509_buf *san_buf, + mbedtls_x509_subject_alternative_name *san); +/** + * \brief Unallocate all data related to subject alternative name + * + * \param san SAN structure - extra memory owned by this structure will be freed + */ +void mbedtls_x509_free_subject_alt_name(mbedtls_x509_subject_alternative_name *san); + +/** \} addtogroup x509_module */ + +/* + * Internal module functions. You probably do not want to use these unless you + * know you do. + */ +int mbedtls_x509_get_name(unsigned char **p, const unsigned char *end, + mbedtls_x509_name *cur); +int mbedtls_x509_get_alg_null(unsigned char **p, const unsigned char *end, + mbedtls_x509_buf *alg); +int mbedtls_x509_get_alg(unsigned char **p, const unsigned char *end, + mbedtls_x509_buf *alg, mbedtls_x509_buf *params); +#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT) +int mbedtls_x509_get_rsassa_pss_params(const mbedtls_x509_buf *params, + mbedtls_md_type_t *md_alg, mbedtls_md_type_t *mgf_md, + int *salt_len); +#endif +int mbedtls_x509_get_sig(unsigned char **p, const unsigned char *end, mbedtls_x509_buf *sig); +int mbedtls_x509_get_sig_alg(const mbedtls_x509_buf *sig_oid, const mbedtls_x509_buf *sig_params, + mbedtls_md_type_t *md_alg, mbedtls_pk_type_t *pk_alg, + void **sig_opts); +int mbedtls_x509_get_time(unsigned char **p, const unsigned char *end, + mbedtls_x509_time *t); +int mbedtls_x509_get_serial(unsigned char **p, const unsigned char *end, + mbedtls_x509_buf *serial); +int mbedtls_x509_get_ext(unsigned char **p, const unsigned char *end, + mbedtls_x509_buf *ext, int tag); +#if !defined(MBEDTLS_X509_REMOVE_INFO) +int mbedtls_x509_sig_alg_gets(char *buf, size_t size, const mbedtls_x509_buf *sig_oid, + mbedtls_pk_type_t pk_alg, mbedtls_md_type_t md_alg, + const void *sig_opts); +#endif +int mbedtls_x509_key_size_helper(char *buf, size_t buf_size, const char *name); +int mbedtls_x509_string_to_names(mbedtls_asn1_named_data **head, const char *name); +int mbedtls_x509_set_extension(mbedtls_asn1_named_data **head, const char *oid, size_t oid_len, + int critical, const unsigned char *val, + size_t val_len); +int mbedtls_x509_write_extensions(unsigned char **p, unsigned char *start, + mbedtls_asn1_named_data *first); +int mbedtls_x509_write_names(unsigned char **p, unsigned char *start, + mbedtls_asn1_named_data *first); +int mbedtls_x509_write_sig(unsigned char **p, unsigned char *start, + const char *oid, size_t oid_len, + unsigned char *sig, size_t size, + mbedtls_pk_type_t pk_alg); +int mbedtls_x509_get_ns_cert_type(unsigned char **p, + const unsigned char *end, + unsigned char *ns_cert_type); +int mbedtls_x509_get_key_usage(unsigned char **p, + const unsigned char *end, + unsigned int *key_usage); +int mbedtls_x509_get_subject_alt_name(unsigned char **p, + const unsigned char *end, + mbedtls_x509_sequence *subject_alt_name); +int mbedtls_x509_get_subject_alt_name_ext(unsigned char **p, + const unsigned char *end, + mbedtls_x509_sequence *subject_alt_name); +int mbedtls_x509_info_subject_alt_name(char **buf, size_t *size, + const mbedtls_x509_sequence + *subject_alt_name, + const char *prefix); +int mbedtls_x509_info_cert_type(char **buf, size_t *size, + unsigned char ns_cert_type); +int mbedtls_x509_info_key_usage(char **buf, size_t *size, + unsigned int key_usage); + +int mbedtls_x509_write_set_san_common(mbedtls_asn1_named_data **extensions, + const mbedtls_x509_san_list *san_list); + +/** + * \brief This function parses a CN string as an IP address. + * + * \param cn The CN string to parse. CN string MUST be null-terminated. + * \param dst The target buffer to populate with the binary IP address. + * The buffer MUST be 16 bytes to save IPv6, and should be + * 4-byte aligned if the result will be used as struct in_addr. + * e.g. uint32_t dst[4] + * + * \note \p cn is parsed as an IPv6 address if string contains ':', + * else \p cn is parsed as an IPv4 address. + * + * \return Length of binary IP address; num bytes written to target. + * \return \c 0 on failure to parse CN string as an IP address. + */ +size_t mbedtls_x509_crt_parse_cn_inet_pton(const char *cn, void *dst); + +#define MBEDTLS_X509_SAFE_SNPRINTF \ + do { \ + if (ret < 0 || (size_t) ret >= n) \ + return MBEDTLS_ERR_X509_BUFFER_TOO_SMALL; \ + \ + n -= (size_t) ret; \ + p += (size_t) ret; \ + } while (0) + +#ifdef __cplusplus +} +#endif + +#endif /* x509.h */ |