slirp/src/stream.c

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * libslirp io streams
   4  *
   5  * Copyright (c) 2018 Red Hat, Inc.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25 #include "stream.h"
  26 #include <glib.h>
  27
  28 bool slirp_istream_read(SlirpIStream *f, void *buf, size_t size)
  29 {
  30     return f->read_cb(buf, size, f->opaque) == size;
  31 }
  32
  33 bool slirp_ostream_write(SlirpOStream *f, const void *buf, size_t size)
  34 {
  35     return f->write_cb(buf, size, f->opaque) == size;
  36 }
  37
  38 uint8_t slirp_istream_read_u8(SlirpIStream *f)
  39 {
  40     uint8_t b;
  41
  42     if (slirp_istream_read(f, &b, sizeof(b))) {
  43         return b;
  44     }
  45
  46     return 0;
  47 }
  48
  49 bool slirp_ostream_write_u8(SlirpOStream *f, uint8_t b)
  50 {
  51     return slirp_ostream_write(f, &b, sizeof(b));
  52 }
  53
  54 uint16_t slirp_istream_read_u16(SlirpIStream *f)
  55 {
  56     uint16_t b;
  57
  58     if (slirp_istream_read(f, &b, sizeof(b))) {
  59         return GUINT16_FROM_BE(b);
  60     }
  61
  62     return 0;
  63 }
  64
  65 bool slirp_ostream_write_u16(SlirpOStream *f, uint16_t b)
  66 {
  67     b =  GUINT16_TO_BE(b);
  68     return slirp_ostream_write(f, &b, sizeof(b));
  69 }
  70
  71 uint32_t slirp_istream_read_u32(SlirpIStream *f)
  72 {
  73     uint32_t b;
  74
  75     if (slirp_istream_read(f, &b, sizeof(b))) {
  76         return GUINT32_FROM_BE(b);
  77     }
  78
  79     return 0;
  80 }
  81
  82 bool slirp_ostream_write_u32(SlirpOStream *f, uint32_t b)
  83 {
  84     b = GUINT32_TO_BE(b);
  85     return slirp_ostream_write(f, &b, sizeof(b));
  86 }
  87
  88 int16_t slirp_istream_read_i16(SlirpIStream *f)
  89 {
  90     int16_t b;
  91
  92     if (slirp_istream_read(f, &b, sizeof(b))) {
  93         return GINT16_FROM_BE(b);
  94     }
  95
  96     return 0;
  97 }
  98
  99 bool slirp_ostream_write_i16(SlirpOStream *f, int16_t b)
 100 {
 101     b = GINT16_TO_BE(b);
 102     return slirp_ostream_write(f, &b, sizeof(b));
 103 }
 104
 105 int32_t slirp_istream_read_i32(SlirpIStream *f)
 106 {
 107     int32_t b;
 108
 109     if (slirp_istream_read(f, &b, sizeof(b))) {
 110         return GINT32_FROM_BE(b);
 111     }
 112
 113     return 0;
 114 }
 115
 116 bool slirp_ostream_write_i32(SlirpOStream *f, int32_t b)
 117 {
 118     b = GINT32_TO_BE(b);
 119     return slirp_ostream_write(f, &b, sizeof(b));
 120 }