OpenCoverage

msg.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssh/src/msg.c
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1/* $OpenBSD: msg.c,v 1.17 2018/07/09 21:59:10 markus Exp $ */-
2/*-
3 * Copyright (c) 2002 Markus Friedl. All rights reserved.-
4 *-
5 * Redistribution and use in source and binary forms, with or without-
6 * modification, are permitted provided that the following conditions-
7 * are met:-
8 * 1. Redistributions of source code must retain the above copyright-
9 * notice, this list of conditions and the following disclaimer.-
10 * 2. Redistributions in binary form must reproduce the above copyright-
11 * notice, this list of conditions and the following disclaimer in the-
12 * documentation and/or other materials provided with the distribution.-
13 *-
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR-
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES-
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.-
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,-
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT-
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,-
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY-
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT-
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF-
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.-
24 */-
25-
26#include "includes.h"-
27-
28#include <sys/types.h>-
29#include <sys/uio.h>-
30-
31#include <errno.h>-
32#include <stdio.h>-
33#include <string.h>-
34#include <unistd.h>-
35#include <stdarg.h>-
36-
37#include "sshbuf.h"-
38#include "ssherr.h"-
39#include "log.h"-
40#include "atomicio.h"-
41#include "msg.h"-
42#include "misc.h"-
43-
44int-
45ssh_msg_send(int fd, u_char type, struct sshbuf *m)-
46{-
47 u_char buf[5];-
48 u_int mlen = sshbuf_len(m);-
49-
50 debug3("ssh_msg_send: type %u", (unsigned int)type & 0xff);-
51-
52 put_u32(buf, mlen + 1);-
53 buf[4] = type; /* 1st byte of payload is mesg-type */-
54 if (atomicio(vwrite, fd, buf, sizeof(buf)) != sizeof(buf)) {
atomicio((ssiz...!= sizeof(buf)Description
TRUEnever evaluated
FALSEnever evaluated
0
55 error("ssh_msg_send: write");-
56 return (-1);
never executed: return (-1);
0
57 }-
58 if (atomicio(vwrite, fd, sshbuf_mutable_ptr(m), mlen) != mlen) {
atomicio((ssiz... mlen) != mlenDescription
TRUEnever evaluated
FALSEnever evaluated
0
59 error("ssh_msg_send: write");-
60 return (-1);
never executed: return (-1);
0
61 }-
62 return (0);
never executed: return (0);
0
63}-
64-
65int-
66ssh_msg_recv(int fd, struct sshbuf *m)-
67{-
68 u_char buf[4], *p;-
69 u_int msg_len;-
70 int r;-
71-
72 debug3("ssh_msg_recv entering");-
73-
74 if (atomicio(read, fd, buf, sizeof(buf)) != sizeof(buf)) {
atomicio(read,...!= sizeof(buf)Description
TRUEnever evaluated
FALSEnever evaluated
0
75 if (errno != EPIPE)
(*__errno_location ()) != 32Description
TRUEnever evaluated
FALSEnever evaluated
0
76 error("ssh_msg_recv: read: header");
never executed: error("ssh_msg_recv: read: header");
0
77 return (-1);
never executed: return (-1);
0
78 }-
79 msg_len = get_u32(buf);-
80 if (msg_len > 256 * 1024) {
msg_len > 256 * 1024Description
TRUEnever evaluated
FALSEnever evaluated
0
81 error("ssh_msg_recv: read: bad msg_len %u", msg_len);-
82 return (-1);
never executed: return (-1);
0
83 }-
84 sshbuf_reset(m);-
85 if ((r = sshbuf_reserve(m, msg_len, &p)) != 0) {
(r = sshbuf_re...len, &p)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
86 error("%s: buffer error: %s", __func__, ssh_err(r));-
87 return -1;
never executed: return -1;
0
88 }-
89 if (atomicio(read, fd, p, msg_len) != msg_len) {
atomicio(read,...en) != msg_lenDescription
TRUEnever evaluated
FALSEnever evaluated
0
90 error("ssh_msg_recv: read: %s", strerror(errno));-
91 return (-1);
never executed: return (-1);
0
92 }-
93 return (0);
never executed: return (0);
0
94}-
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