diff options
Diffstat (limited to 'usr/src/cmd/ssh/libssh/common/msg.c')
| -rw-r--r-- | usr/src/cmd/ssh/libssh/common/msg.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/usr/src/cmd/ssh/libssh/common/msg.c b/usr/src/cmd/ssh/libssh/common/msg.c new file mode 100644 index 0000000000..26c5eeec61 --- /dev/null +++ b/usr/src/cmd/ssh/libssh/common/msg.c @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2002 Markus Friedl. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "includes.h" +RCSID("$OpenBSD: msg.c,v 1.4 2002/07/01 16:15:25 deraadt Exp $"); + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include "buffer.h" +#include "getput.h" +#include "log.h" +#include "atomicio.h" +#include "msg.h" + +void +ssh_msg_send(int fd, u_char type, Buffer *m) +{ + u_char buf[5]; + u_int mlen = buffer_len(m); + + debug3("ssh_msg_send: type %u", (unsigned int)type & 0xff); + + PUT_32BIT(buf, mlen + 1); + buf[4] = type; /* 1st byte of payload is mesg-type */ + if (atomicio(write, fd, buf, sizeof(buf)) != sizeof(buf)) + fatal("ssh_msg_send: write"); + if (atomicio(write, fd, buffer_ptr(m), mlen) != mlen) + fatal("ssh_msg_send: write"); +} + +int +ssh_msg_recv(int fd, Buffer *m) +{ + u_char buf[4]; + ssize_t res; + u_int msg_len; + + debug3("ssh_msg_recv entering"); + + res = atomicio(read, fd, buf, sizeof(buf)); + if (res != sizeof(buf)) { + if (res == 0) + return -1; + fatal("ssh_msg_recv: read: header %ld", (long)res); + } + msg_len = GET_32BIT(buf); + if (msg_len > 256 * 1024) + fatal("ssh_msg_recv: read: bad msg_len %u", msg_len); + buffer_clear(m); + buffer_append_space(m, msg_len); + res = atomicio(read, fd, buffer_ptr(m), msg_len); + if (res != msg_len) + fatal("ssh_msg_recv: read: %ld != msg_len", (long)res); + return 0; +} |