aboutsummaryrefslogtreecommitdiffstats
path: root/src/asn1/asn1_oid.h
blob: a0b1edebabf9f9e31f885101116cad1a8202c6e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
/*
* ASN.1 OID
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_ASN1_OID_H__
#define BOTAN_ASN1_OID_H__

#include <botan/asn1_obj.h>
#include <string>
#include <vector>

namespace Botan {

/**
* This class represents ASN.1 object identifiers.
*/
class BOTAN_DLL OID : public ASN1_Object
   {
   public:
      void encode_into(class DER_Encoder&) const;
      void decode_from(class BER_Decoder&);

      /**
      * Find out whether this OID is empty
      * @return true is no OID value is set
      */
      bool empty() const { return id.size() == 0; }

      /**
      * Get this OID as list (vector) of its components.
      * @return vector representing this OID
      */
      const std::vector<u32bit>& get_id() const { return id; }

      /**
      * Get this OID as a string
      * @return string representing this OID
      */
      std::string as_string() const;

      /**
      * Compare two OIDs.
      * @return true if they are equal, false otherwise
      */
      bool operator==(const OID&) const;

      /**
      * Reset this instance to an empty OID.
      */
      void clear();

      /**
      * Add a component to this OID.
      * @param new_comp the new component to add to the end of this OID
      * @return reference to *this
      */
      OID& operator+=(u32bit new_comp);

      /**
      * Construct an OID from a string.
      * @param str a string in the form "a.b.c" etc., where a,b,c are numbers
      */
      OID(const std::string& str = "");
   private:
      std::vector<u32bit> id;
   };

/**
* Append another component onto the OID.
* @param oid the OID to add the new component to
* @param new_comp the new component to add
*/
OID BOTAN_DLL operator+(const OID& oid, u32bit new_comp);

/**
* Compare two OIDs.
* @param a the first OID
* @param b the second OID
* @return true if a is not equal to b
*/
bool BOTAN_DLL operator!=(const OID& a, const OID& b);

/**
* Compare two OIDs.
* @param a the first OID
* @param b the second OID
* @return true if a is lexicographically smaller than b
*/
bool BOTAN_DLL operator<(const OID& a, const OID& b);

}

#endif