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      1 #ifndef HEADER_CURL_X509ASN1_H
      2 #define HEADER_CURL_X509ASN1_H
      3 
      4 /***************************************************************************
      5  *                                  _   _ ____  _
      6  *  Project                     ___| | | |  _ \| |
      7  *                             / __| | | | |_) | |
      8  *                            | (__| |_| |  _ <| |___
      9  *                             \___|\___/|_| \_\_____|
     10  *
     11  * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel (at) haxx.se>, et al.
     12  *
     13  * This software is licensed as described in the file COPYING, which
     14  * you should have received as part of this distribution. The terms
     15  * are also available at https://curl.haxx.se/docs/copyright.html.
     16  *
     17  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     18  * copies of the Software, and permit persons to whom the Software is
     19  * furnished to do so, under the terms of the COPYING file.
     20  *
     21  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     22  * KIND, either express or implied.
     23  *
     24  ***************************************************************************/
     25 
     26 #include "curl_setup.h"
     27 
     28 #if defined(USE_GSKIT) || defined(USE_NSS) || defined(USE_GNUTLS) || \
     29     defined(USE_CYASSL) || defined(USE_SCHANNEL)
     30 
     31 #include "urldata.h"
     32 
     33 /*
     34  * Constants.
     35  */
     36 
     37 /* ASN.1 classes. */
     38 #define CURL_ASN1_UNIVERSAL             0
     39 #define CURL_ASN1_APPLICATION           1
     40 #define CURL_ASN1_CONTEXT_SPECIFIC      2
     41 #define CURL_ASN1_PRIVATE               3
     42 
     43 /* ASN.1 types. */
     44 #define CURL_ASN1_BOOLEAN               1
     45 #define CURL_ASN1_INTEGER               2
     46 #define CURL_ASN1_BIT_STRING            3
     47 #define CURL_ASN1_OCTET_STRING          4
     48 #define CURL_ASN1_NULL                  5
     49 #define CURL_ASN1_OBJECT_IDENTIFIER     6
     50 #define CURL_ASN1_OBJECT_DESCRIPTOR     7
     51 #define CURL_ASN1_INSTANCE_OF           8
     52 #define CURL_ASN1_REAL                  9
     53 #define CURL_ASN1_ENUMERATED            10
     54 #define CURL_ASN1_EMBEDDED              11
     55 #define CURL_ASN1_UTF8_STRING           12
     56 #define CURL_ASN1_RELATIVE_OID          13
     57 #define CURL_ASN1_SEQUENCE              16
     58 #define CURL_ASN1_SET                   17
     59 #define CURL_ASN1_NUMERIC_STRING        18
     60 #define CURL_ASN1_PRINTABLE_STRING      19
     61 #define CURL_ASN1_TELETEX_STRING        20
     62 #define CURL_ASN1_VIDEOTEX_STRING       21
     63 #define CURL_ASN1_IA5_STRING            22
     64 #define CURL_ASN1_UTC_TIME              23
     65 #define CURL_ASN1_GENERALIZED_TIME      24
     66 #define CURL_ASN1_GRAPHIC_STRING        25
     67 #define CURL_ASN1_VISIBLE_STRING        26
     68 #define CURL_ASN1_GENERAL_STRING        27
     69 #define CURL_ASN1_UNIVERSAL_STRING      28
     70 #define CURL_ASN1_CHARACTER_STRING      29
     71 #define CURL_ASN1_BMP_STRING            30
     72 
     73 
     74 /*
     75  * Types.
     76  */
     77 
     78 /* ASN.1 parsed element. */
     79 typedef struct {
     80   const char *  header;         /* Pointer to header byte. */
     81   const char *  beg;            /* Pointer to element data. */
     82   const char *  end;            /* Pointer to 1st byte after element. */
     83   unsigned char class;          /* ASN.1 element class. */
     84   unsigned char tag;            /* ASN.1 element tag. */
     85   bool          constructed;    /* Element is constructed. */
     86 }  curl_asn1Element;
     87 
     88 
     89 /* ASN.1 OID table entry. */
     90 typedef struct {
     91   const char *  numoid;         /* Dotted-numeric OID. */
     92   const char *  textoid;        /* OID name. */
     93 }  curl_OID;
     94 
     95 
     96 /* X509 certificate: RFC 5280. */
     97 typedef struct {
     98   curl_asn1Element      certificate;
     99   curl_asn1Element      version;
    100   curl_asn1Element      serialNumber;
    101   curl_asn1Element      signatureAlgorithm;
    102   curl_asn1Element      signature;
    103   curl_asn1Element      issuer;
    104   curl_asn1Element      notBefore;
    105   curl_asn1Element      notAfter;
    106   curl_asn1Element      subject;
    107   curl_asn1Element      subjectPublicKeyInfo;
    108   curl_asn1Element      subjectPublicKeyAlgorithm;
    109   curl_asn1Element      subjectPublicKey;
    110   curl_asn1Element      issuerUniqueID;
    111   curl_asn1Element      subjectUniqueID;
    112   curl_asn1Element      extensions;
    113 }  curl_X509certificate;
    114 
    115 
    116 /*
    117  * Prototypes.
    118  */
    119 
    120 const char * Curl_getASN1Element(curl_asn1Element * elem,
    121                                  const char * beg, const char * end);
    122 const char * Curl_ASN1tostr(curl_asn1Element * elem, int type);
    123 const char * Curl_DNtostr(curl_asn1Element * dn);
    124 void Curl_parseX509(curl_X509certificate * cert,
    125                     const char * beg, const char * end);
    126 CURLcode Curl_extract_certinfo(struct connectdata * conn, int certnum,
    127                                const char * beg, const char * end);
    128 CURLcode Curl_verifyhost(struct connectdata * conn,
    129                          const char * beg, const char * end);
    130 
    131 #endif /* USE_GSKIT or USE_NSS or USE_GNUTLS or USE_CYASSL or USE_SCHANNEL */
    132 #endif /* HEADER_CURL_X509ASN1_H */
    133