summaryrefslogtreecommitdiff
path: root/roaming_common.c
diff options
context:
space:
mode:
Diffstat (limited to 'roaming_common.c')
-rw-r--r--roaming_common.c241
1 files changed, 0 insertions, 241 deletions
diff --git a/roaming_common.c b/roaming_common.c
deleted file mode 100644
index ea064605c..000000000
--- a/roaming_common.c
+++ /dev/null
@@ -1,241 +0,0 @@
1/* $OpenBSD: roaming_common.c,v 1.13 2015/01/27 12:54:06 okan Exp $ */
2/*
3 * Copyright (c) 2004-2009 AppGate Network Security AB
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include "includes.h"
19
20#include <sys/types.h>
21#include <sys/socket.h>
22#include <sys/uio.h>
23
24#include <errno.h>
25#include <stdarg.h>
26#include <string.h>
27#include <unistd.h>
28
29#include "atomicio.h"
30#include "log.h"
31#include "packet.h"
32#include "xmalloc.h"
33#include "cipher.h"
34#include "buffer.h"
35#include "roaming.h"
36#include "digest.h"
37
38static size_t out_buf_size = 0;
39static char *out_buf = NULL;
40static size_t out_start;
41static size_t out_last;
42
43static u_int64_t write_bytes = 0;
44static u_int64_t read_bytes = 0;
45
46int roaming_enabled = 0;
47int resume_in_progress = 0;
48
49int
50get_snd_buf_size(void)
51{
52 int fd = packet_get_connection_out();
53 int optval;
54 socklen_t optvallen = sizeof(optval);
55
56 if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &optval, &optvallen) != 0)
57 optval = DEFAULT_ROAMBUF;
58 return optval;
59}
60
61int
62get_recv_buf_size(void)
63{
64 int fd = packet_get_connection_in();
65 int optval;
66 socklen_t optvallen = sizeof(optval);
67
68 if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &optval, &optvallen) != 0)
69 optval = DEFAULT_ROAMBUF;
70 return optval;
71}
72
73void
74set_out_buffer_size(size_t size)
75{
76 if (size == 0 || size > MAX_ROAMBUF)
77 fatal("%s: bad buffer size %lu", __func__, (u_long)size);
78 /*
79 * The buffer size can only be set once and the buffer will live
80 * as long as the session lives.
81 */
82 if (out_buf == NULL) {
83 out_buf_size = size;
84 out_buf = xmalloc(size);
85 out_start = 0;
86 out_last = 0;
87 }
88}
89
90u_int64_t
91get_recv_bytes(void)
92{
93 return read_bytes;
94}
95
96void
97add_recv_bytes(u_int64_t num)
98{
99 read_bytes += num;
100}
101
102u_int64_t
103get_sent_bytes(void)
104{
105 return write_bytes;
106}
107
108void
109roam_set_bytes(u_int64_t sent, u_int64_t recvd)
110{
111 read_bytes = recvd;
112 write_bytes = sent;
113}
114
115static void
116buf_append(const char *buf, size_t count)
117{
118 if (count > out_buf_size) {
119 buf += count - out_buf_size;
120 count = out_buf_size;
121 }
122 if (count < out_buf_size - out_last) {
123 memcpy(out_buf + out_last, buf, count);
124 if (out_start > out_last)
125 out_start += count;
126 out_last += count;
127 } else {
128 /* data will wrap */
129 size_t chunk = out_buf_size - out_last;
130 memcpy(out_buf + out_last, buf, chunk);
131 memcpy(out_buf, buf + chunk, count - chunk);
132 out_last = count - chunk;
133 out_start = out_last + 1;
134 }
135}
136
137ssize_t
138roaming_write(int fd, const void *buf, size_t count, int *cont)
139{
140 ssize_t ret;
141
142 ret = write(fd, buf, count);
143 if (ret > 0 && !resume_in_progress) {
144 write_bytes += ret;
145 if (out_buf_size > 0)
146 buf_append(buf, ret);
147 }
148 if (out_buf_size > 0 &&
149 (ret == 0 || (ret == -1 && errno == EPIPE))) {
150 if (wait_for_roaming_reconnect() != 0) {
151 ret = 0;
152 *cont = 1;
153 } else {
154 ret = -1;
155 errno = EAGAIN;
156 }
157 }
158 return ret;
159}
160
161ssize_t
162roaming_read(int fd, void *buf, size_t count, int *cont)
163{
164 ssize_t ret = read(fd, buf, count);
165 if (ret > 0) {
166 if (!resume_in_progress) {
167 read_bytes += ret;
168 }
169 } else if (out_buf_size > 0 &&
170 (ret == 0 || (ret == -1 && (errno == ECONNRESET
171 || errno == ECONNABORTED || errno == ETIMEDOUT
172 || errno == EHOSTUNREACH)))) {
173 debug("roaming_read failed for %d ret=%ld errno=%d",
174 fd, (long)ret, errno);
175 ret = 0;
176 if (wait_for_roaming_reconnect() == 0)
177 *cont = 1;
178 }
179 return ret;
180}
181
182size_t
183roaming_atomicio(ssize_t(*f)(int, void*, size_t), int fd, void *buf,
184 size_t count)
185{
186 size_t ret = atomicio(f, fd, buf, count);
187
188 if (f == vwrite && ret > 0 && !resume_in_progress) {
189 write_bytes += ret;
190 } else if (f == read && ret > 0 && !resume_in_progress) {
191 read_bytes += ret;
192 }
193 return ret;
194}
195
196void
197resend_bytes(int fd, u_int64_t *offset)
198{
199 size_t available, needed;
200
201 if (out_start < out_last)
202 available = out_last - out_start;
203 else
204 available = out_buf_size;
205 needed = write_bytes - *offset;
206 debug3("resend_bytes: resend %lu bytes from %llu",
207 (unsigned long)needed, (unsigned long long)*offset);
208 if (needed > available)
209 fatal("Needed to resend more data than in the cache");
210 if (out_last < needed) {
211 int chunkend = needed - out_last;
212 atomicio(vwrite, fd, out_buf + out_buf_size - chunkend,
213 chunkend);
214 atomicio(vwrite, fd, out_buf, out_last);
215 } else {
216 atomicio(vwrite, fd, out_buf + (out_last - needed), needed);
217 }
218}
219
220/*
221 * Caclulate a new key after a reconnect
222 */
223void
224calculate_new_key(u_int64_t *key, u_int64_t cookie, u_int64_t challenge)
225{
226 u_char hash[SSH_DIGEST_MAX_LENGTH];
227 Buffer b;
228
229 buffer_init(&b);
230 buffer_put_int64(&b, *key);
231 buffer_put_int64(&b, cookie);
232 buffer_put_int64(&b, challenge);
233
234 if (ssh_digest_buffer(SSH_DIGEST_SHA1, &b, hash, sizeof(hash)) != 0)
235 fatal("%s: digest_buffer failed", __func__);
236
237 buffer_clear(&b);
238 buffer_append(&b, hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
239 *key = buffer_get_int64(&b);
240 buffer_free(&b);
241}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 18:12:55 +0000