Mercurial > dovecot > core-2.2

annotate src/lib-ssl-iostream/istream-openssl.c @ 12616:bd23d4e10fa1

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Added lib-ssl-iostream for handling SSL connections more easily.
author Timo Sirainen <tss@iki.fi>
date Mon, 31 Jan 2011 18:40:27 +0200
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children 6a3f3a5ad9a5
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12616
bd23d4e10fa1 Added lib-ssl-iostream for handling SSL connections more easily.
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1 /* Copyright (c) 2009 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "istream-internal.h"
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5 #include "iostream-openssl.h"
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6
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7 struct ssl_istream {
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8 struct istream_private istream;
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9 struct ssl_iostream *ssl_io;
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10 bool seen_eof;
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11 };
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12
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13 static void i_stream_ssl_destroy(struct iostream_private *stream)
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14 {
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15 struct ssl_istream *sstream = (struct ssl_istream *)stream;
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16
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17 ssl_iostream_unref(&sstream->ssl_io);
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18 }
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19
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20 static ssize_t i_stream_ssl_read(struct istream_private *stream)
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21 {
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22 struct ssl_istream *sstream = (struct ssl_istream *)stream;
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23 size_t size;
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24 ssize_t ret;
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25
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26 if (sstream->seen_eof) {
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27 stream->istream.eof = TRUE;
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28 return -1;
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29 }
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30 if (!sstream->ssl_io->handshaked) {
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31 if ((ret = ssl_iostream_handshake(sstream->ssl_io)) <= 0) {
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32 if (ret < 0)
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33 stream->istream.stream_errno = errno;
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34 return ret;
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35 }
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36 }
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37
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38 if (!i_stream_get_buffer_space(stream, 1, &size))
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39 return -2;
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40
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41 while ((ret = SSL_read(sstream->ssl_io->ssl,
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42 stream->w_buffer + stream->pos, size)) <= 0) {
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43 ret = ssl_iostream_handle_error(sstream->ssl_io, ret,
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44 "SSL_read");
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45 if (ret <= 0) {
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46 if (ret < 0) {
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47 stream->istream.stream_errno = errno;
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48 stream->istream.eof = TRUE;
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49 sstream->seen_eof = TRUE;
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50 }
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51 return ret;
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52 }
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53 (void)ssl_iostream_bio_sync(sstream->ssl_io);
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54 }
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55 stream->pos += ret;
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56 return ret;
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57 }
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58
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59 struct istream *i_stream_create_ssl(struct ssl_iostream *ssl_io)
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60 {
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61 struct ssl_istream *sstream;
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62
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63 ssl_io->refcount++;
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64
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65 sstream = i_new(struct ssl_istream, 1);
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66 sstream->ssl_io = ssl_io;
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67 sstream->istream.iostream.destroy = i_stream_ssl_destroy;
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68 sstream->istream.max_buffer_size =
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69 ssl_io->plain_input->real_stream->max_buffer_size;
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70 sstream->istream.read = i_stream_ssl_read;
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71
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72 sstream->istream.istream.readable_fd = FALSE;
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73 return i_stream_create(&sstream->istream, NULL, -1);
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74 }