Botan  2.1.0
Crypto and TLS for C++11
fd_unix.cpp
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1 /*
2 * Pipe I/O for Unix
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #include <botan/pipe.h>
9 #include <botan/exceptn.h>
10 #include <unistd.h>
11 
12 namespace Botan {
13 
14 /*
15 * Write data from a pipe into a Unix fd
16 */
17 int operator<<(int fd, Pipe& pipe)
18  {
19  secure_vector<uint8_t> buffer(DEFAULT_BUFFERSIZE);
20  while(pipe.remaining())
21  {
22  size_t got = pipe.read(buffer.data(), buffer.size());
23  size_t position = 0;
24  while(got)
25  {
26  ssize_t ret = write(fd, &buffer[position], got);
27  if(ret == -1)
28  throw Stream_IO_Error("Pipe output operator (unixfd) has failed");
29  position += ret;
30  got -= ret;
31  }
32  }
33  return fd;
34  }
35 
36 /*
37 * Read data from a Unix fd into a pipe
38 */
39 int operator>>(int fd, Pipe& pipe)
40  {
41  secure_vector<uint8_t> buffer(DEFAULT_BUFFERSIZE);
42  while(true)
43  {
44  ssize_t ret = read(fd, buffer.data(), buffer.size());
45  if(ret == 0) break;
46  if(ret == -1)
47  throw Stream_IO_Error("Pipe input operator (unixfd) has failed");
48  pipe.write(buffer.data(), ret);
49  }
50  return fd;
51  }
52 
53 }
std::istream & operator>>(std::istream &in, X509_DN &dn)
Definition: x509_dn.cpp:325
size_t remaining(message_id msg=DEFAULT_MESSAGE) const BOTAN_WARN_UNUSED_RESULT
Definition: pipe_rw.cpp:130
std::ostream & operator<<(std::ostream &out, const X509_DN &dn)
Definition: x509_dn.cpp:299
size_t read(uint8_t output[], size_t length) override BOTAN_WARN_UNUSED_RESULT
Definition: pipe_rw.cpp:81
std::vector< T, secure_allocator< T >> secure_vector
Definition: secmem.h:121
Definition: alg_id.cpp:13
void write(const uint8_t in[], size_t length)
Definition: pipe_rw.cpp:34