/* * Time ::= CHOICE { * utcTime UTCTime, * generalTime GeneralizedTime } */ int mbedtls_x509_get_time( unsigned char **p, const unsigned char *end, mbedtls_x509_time *time ) { int ret; size_t len; unsigned char tag; if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_X509_INVALID_DATE + MBEDTLS_ERR_ASN1_OUT_OF_DATA ); tag = **p; if( tag == MBEDTLS_ASN1_UTC_TIME ) { (*p)++; ret = mbedtls_asn1_get_len( p, end, &len ); if( ret != 0 ) return( MBEDTLS_ERR_X509_INVALID_DATE + ret ); CHECK( x509_parse_int( p, 2, &time->year ) ); CHECK( x509_parse_int( p, 2, &time->mon ) ); CHECK( x509_parse_int( p, 2, &time->day ) ); CHECK( x509_parse_int( p, 2, &time->hour ) ); CHECK( x509_parse_int( p, 2, &time->min ) ); if( len > 10 ) CHECK( x509_parse_int( p, 2, &time->sec ) ); if( len > 12 && *(*p)++ != 'Z' ) return( MBEDTLS_ERR_X509_INVALID_DATE ); time->year += 100 * ( time->year < 50 ); time->year += 1900; return( 0 ); } else if( tag == MBEDTLS_ASN1_GENERALIZED_TIME ) { (*p)++; ret = mbedtls_asn1_get_len( p, end, &len ); if( ret != 0 ) return( MBEDTLS_ERR_X509_INVALID_DATE + ret ); CHECK( x509_parse_int( p, 4, &time->year ) ); CHECK( x509_parse_int( p, 2, &time->mon ) ); CHECK( x509_parse_int( p, 2, &time->day ) ); CHECK( x509_parse_int( p, 2, &time->hour ) ); CHECK( x509_parse_int( p, 2, &time->min ) ); if( len > 12 ) CHECK( x509_parse_int( p, 2, &time->sec ) ); if( len > 14 && *(*p)++ != 'Z' ) return( MBEDTLS_ERR_X509_INVALID_DATE ); return( 0 ); } else return( MBEDTLS_ERR_X509_INVALID_DATE + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ); }
/* * Time ::= CHOICE { * utcTime UTCTime, * generalTime GeneralizedTime } */ int mbedtls_x509_get_time( unsigned char **p, const unsigned char *end, mbedtls_x509_time *tm ) { int ret; size_t len, year_len; unsigned char tag; if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_X509_INVALID_DATE + MBEDTLS_ERR_ASN1_OUT_OF_DATA ); tag = **p; if( tag == MBEDTLS_ASN1_UTC_TIME ) year_len = 2; else if( tag == MBEDTLS_ASN1_GENERALIZED_TIME ) year_len = 4; else return( MBEDTLS_ERR_X509_INVALID_DATE + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ); (*p)++; ret = mbedtls_asn1_get_len( p, end, &len ); if( ret != 0 ) return( MBEDTLS_ERR_X509_INVALID_DATE + ret ); return x509_parse_time( p, len, year_len, tm ); }
static int asn1_get_tag_len(unsigned char *p, const unsigned char *end, size_t *len) { int result = 0; unsigned char *len_p = p + 1; INVOKE_AND_CHECK(result, mbedtls_asn1_get_len(&len_p, end, len) ); *len += len_p - p; return result; }
/* * AttributeTypeAndValue ::= SEQUENCE { * type AttributeType, * value AttributeValue } * * AttributeType ::= OBJECT IDENTIFIER * * AttributeValue ::= ANY DEFINED BY AttributeType */ static int x509_get_attr_type_value( unsigned char **p, const unsigned char *end, mbedtls_x509_name *cur ) { int ret; size_t len; mbedtls_x509_buf *oid; mbedtls_x509_buf *val; if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 ) return( MBEDTLS_ERR_X509_INVALID_NAME + ret ); if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA ); oid = &cur->oid; oid->tag = **p; if( ( ret = mbedtls_asn1_get_tag( p, end, &oid->len, MBEDTLS_ASN1_OID ) ) != 0 ) return( MBEDTLS_ERR_X509_INVALID_NAME + ret ); oid->p = *p; *p += oid->len; if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_OUT_OF_DATA ); if( **p != MBEDTLS_ASN1_BMP_STRING && **p != MBEDTLS_ASN1_UTF8_STRING && **p != MBEDTLS_ASN1_T61_STRING && **p != MBEDTLS_ASN1_PRINTABLE_STRING && **p != MBEDTLS_ASN1_IA5_STRING && **p != MBEDTLS_ASN1_UNIVERSAL_STRING && **p != MBEDTLS_ASN1_BIT_STRING ) return( MBEDTLS_ERR_X509_INVALID_NAME + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ); val = &cur->val; val->tag = *(*p)++; if( ( ret = mbedtls_asn1_get_len( p, end, &val->len ) ) != 0 ) return( MBEDTLS_ERR_X509_INVALID_NAME + ret ); val->p = *p; *p += val->len; cur->next = NULL; return( 0 ); }
int mbedtls_asn1_get_tag( unsigned char **p, const unsigned char *end, size_t *len, int tag ) { if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_ASN1_OUT_OF_DATA ); if( **p != tag ) return( MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ); (*p)++; return( mbedtls_asn1_get_len( p, end, len ) ); }
int mbedtls_asn1_get_alg( unsigned char **p, const unsigned char *end, mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params ) { int ret; size_t len; if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 ) return( ret ); if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_ASN1_OUT_OF_DATA ); alg->tag = **p; end = *p + len; if( ( ret = mbedtls_asn1_get_tag( p, end, &alg->len, MBEDTLS_ASN1_OID ) ) != 0 ) return( ret ); alg->p = *p; *p += alg->len; if( *p == end ) { mbedtls_zeroize( params, sizeof(mbedtls_asn1_buf) ); return( 0 ); } params->tag = **p; (*p)++; if( ( ret = mbedtls_asn1_get_len( p, end, ¶ms->len ) ) != 0 ) return( ret ); params->p = *p; *p += params->len; if( *p != end ) return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ); return( 0 ); }
/* * CertificateSerialNumber ::= INTEGER */ int mbedtls_x509_get_serial( unsigned char **p, const unsigned char *end, mbedtls_x509_buf *serial ) { int ret; if( ( end - *p ) < 1 ) return( MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_OUT_OF_DATA ); if( **p != ( MBEDTLS_ASN1_CONTEXT_SPECIFIC | MBEDTLS_ASN1_PRIMITIVE | 2 ) && **p != MBEDTLS_ASN1_INTEGER ) return( MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ); serial->tag = *(*p)++; if( ( ret = mbedtls_asn1_get_len( p, end, &serial->len ) ) != 0 ) return( MBEDTLS_ERR_X509_INVALID_SERIAL + ret ); serial->p = *p; *p += serial->len; return( 0 ); }