Botan: src/filters/secqueue.h Source File

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secqueue.h
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1 /*
2 * SecureQueue
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Distributed under the terms of the Botan license
6 */
7
8 #ifndef BOTAN_SECURE_QUEUE_H__
9 #define BOTAN_SECURE_QUEUE_H__
10
11 #include <botan/data_src.h>
12 #include <botan/filter.h>
13
14 namespace Botan {
15
16 /**
17 * A queue that knows how to zeroize itself
18 */
19 class BOTAN_DLL SecureQueue : public Fanout_Filter, public DataSource
20 {
21 public:
22 std::string name() const { return "Queue"; }
23
24 void write(const byte[], size_t);
25
26 size_t read(byte[], size_t);
27 size_t peek(byte[], size_t, size_t = 0) const;
28
29 bool end_of_data() const;
30
31 /**
32 * @return number of bytes available in the queue
33 */
34 size_t size() const;
35
36 bool attachable() { return false; }
37
38 bool check_available(size_t n) { return n <= size(); }
39
40 /**
41 * SecureQueue assignment
42 * @param other the queue to copy
43 */
44 SecureQueue& operator=(const SecureQueue& other);
45
46 /**
47 * SecureQueue default constructor (creates empty queue)
48 */
49 SecureQueue();
50
51 /**
52 * SecureQueue copy constructor
53 * @param other the queue to copy
54 */
55 SecureQueue(const SecureQueue& other);
56
57 ~SecureQueue() { destroy(); }
58 private:
59 void destroy();
60 class SecureQueueNode* head;
61 class SecureQueueNode* tail;
62 };
63
64 }
65
66 #endif
Botan::SecureQueue::check_available
bool check_available(size_t n)
Definition: secqueue.h:38
Botan::SecureQueue
Definition: secqueue.h:19
Botan::Fanout_Filter
Definition: filter.h:134
Botan::SecureQueue::attachable
bool attachable()
Definition: secqueue.h:36
Botan::DataSource
Definition: data_src.h:20
Botan::byte
unsigned char byte
Definition: types.h:22
Botan::SecureQueue::name
std::string name() const
Definition: secqueue.h:22
Botan
Definition: algo_base.h:14
Botan::SecureQueue::~SecureQueue
~SecureQueue()
Definition: secqueue.h:57