1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/* $OpenBSD: server-msg.c,v 1.9 2009/07/30 16:40:12 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "tmux.h"
void server_msg_command(struct client *, struct msg_command_data *);
void server_msg_identify(struct client *, struct msg_identify_data *);
void server_msg_resize(struct client *, struct msg_resize_data *);
void printflike2 server_msg_command_error(struct cmd_ctx *, const char *, ...);
void printflike2 server_msg_command_print(struct cmd_ctx *, const char *, ...);
void printflike2 server_msg_command_info(struct cmd_ctx *, const char *, ...);
int
server_msg_dispatch(struct client *c)
{
struct hdr hdr;
struct msg_command_data commanddata;
struct msg_identify_data identifydata;
struct msg_resize_data resizedata;
struct msg_unlock_data unlockdata;
for (;;) {
if (BUFFER_USED(c->in) < sizeof hdr)
return (0);
memcpy(&hdr, BUFFER_OUT(c->in), sizeof hdr);
if (BUFFER_USED(c->in) < (sizeof hdr) + hdr.size)
return (0);
buffer_remove(c->in, sizeof hdr);
switch (hdr.type) {
case MSG_COMMAND:
if (hdr.size != sizeof commanddata)
fatalx("bad MSG_COMMAND size");
buffer_read(c->in, &commanddata, sizeof commanddata);
server_msg_command(c, &commanddata);
break;
case MSG_IDENTIFY:
if (hdr.size != sizeof identifydata)
fatalx("bad MSG_IDENTIFY size");
buffer_read(c->in, &identifydata, sizeof identifydata);
server_msg_identify(c, &identifydata);
break;
case MSG_RESIZE:
if (hdr.size != sizeof resizedata)
fatalx("bad MSG_RESIZE size");
buffer_read(c->in, &resizedata, sizeof resizedata);
server_msg_resize(c, &resizedata);
break;
case MSG_EXITING:
if (hdr.size != 0)
fatalx("bad MSG_EXITING size");
c->session = NULL;
tty_close(&c->tty, c->flags & CLIENT_SUSPENDED);
server_write_client(c, MSG_EXITED, NULL, 0);
break;
case MSG_UNLOCK:
if (hdr.size != sizeof unlockdata)
fatalx("bad MSG_UNLOCK size");
buffer_read(c->in, &unlockdata, sizeof unlockdata);
unlockdata.pass[(sizeof unlockdata.pass) - 1] = '\0';
if (server_unlock(unlockdata.pass) != 0)
server_write_error(c, "bad password");
memset(&unlockdata, 0, sizeof unlockdata);
server_write_client(c, MSG_EXIT, NULL, 0);
break;
case MSG_WAKEUP:
if (hdr.size != 0)
fatalx("bad MSG_WAKEUP size");
c->flags &= ~CLIENT_SUSPENDED;
tty_start_tty(&c->tty);
server_redraw_client(c);
break;
default:
fatalx("unexpected message");
}
}
}
void printflike2
server_msg_command_error(struct cmd_ctx *ctx, const char *fmt, ...)
{
struct msg_print_data data;
va_list ap;
va_start(ap, fmt);
xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
va_end(ap);
server_write_client(ctx->cmdclient, MSG_ERROR, &data, sizeof data);
}
void printflike2
server_msg_command_print(struct cmd_ctx *ctx, const char *fmt, ...)
{
struct msg_print_data data;
va_list ap;
va_start(ap, fmt);
xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
va_end(ap);
server_write_client(ctx->cmdclient, MSG_PRINT, &data, sizeof data);
}
void printflike2
server_msg_command_info(struct cmd_ctx *ctx, const char *fmt, ...)
{
struct msg_print_data data;
va_list ap;
if (be_quiet)
return;
va_start(ap, fmt);
xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
va_end(ap);
server_write_client(ctx->cmdclient, MSG_PRINT, &data, sizeof data);
}
void
server_msg_command(struct client *c, struct msg_command_data *data)
{
struct cmd_ctx ctx;
struct cmd_list *cmdlist = NULL;
struct cmd *cmd;
int argc;
char **argv, *cause;
server_activity = time(NULL);
ctx.error = server_msg_command_error;
ctx.print = server_msg_command_print;
ctx.info = server_msg_command_info;
ctx.msgdata = data;
ctx.curclient = NULL;
ctx.cursession = NULL;
ctx.cmdclient = c;
argc = data->argc;
data->argv[(sizeof data->argv) - 1] = '\0';
if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
server_msg_command_error(&ctx, "command too long");
goto error;
}
if (argc == 0) {
argc = 1;
argv = xcalloc(1, sizeof *argv);
*argv = xstrdup("new-session");
}
if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
server_msg_command_error(&ctx, "%s", cause);
cmd_free_argv(argc, argv);
goto error;
}
cmd_free_argv(argc, argv);
if (data->pid != -1) {
TAILQ_FOREACH(cmd, cmdlist, qentry) {
if (cmd->entry->flags & CMD_CANTNEST) {
server_msg_command_error(&ctx,
"sessions should be nested with care. "
"unset $TMUX to force");
goto error;
}
}
}
if (cmd_list_exec(cmdlist, &ctx) != 1)
server_write_client(c, MSG_EXIT, NULL, 0);
cmd_list_free(cmdlist);
return;
error:
if (cmdlist != NULL)
cmd_list_free(cmdlist);
server_write_client(c, MSG_EXIT, NULL, 0);
}
void
server_msg_identify(struct client *c, struct msg_identify_data *data)
{
if (data->version != PROTOCOL_VERSION) {
server_write_error(c, "protocol version mismatch");
return;
}
c->tty.sx = data->sx;
c->tty.sy = data->sy;
c->cwd = NULL;
data->cwd[(sizeof data->cwd) - 1] = '\0';
if (*data->cwd != '\0')
c->cwd = xstrdup(data->cwd);
data->tty[(sizeof data->tty) - 1] = '\0';
data->term[(sizeof data->term) - 1] = '\0';
tty_init(&c->tty, data->tty, data->term);
if (data->flags & IDENTIFY_UTF8)
c->tty.flags |= TTY_UTF8;
if (data->flags & IDENTIFY_256COLOURS)
c->tty.term_flags |= TERM_256COLOURS;
else if (data->flags & IDENTIFY_88COLOURS)
c->tty.term_flags |= TERM_88COLOURS;
if (data->flags & IDENTIFY_HASDEFAULTS)
c->tty.term_flags |= TERM_HASDEFAULTS;
c->flags |= CLIENT_TERMINAL;
}
void
server_msg_resize(struct client *c, struct msg_resize_data *data)
{
c->tty.sx = data->sx;
if (c->tty.sx == 0)
c->tty.sx = 80;
c->tty.sy = data->sy;
if (c->tty.sy == 0)
c->tty.sy = 25;
c->tty.cx = UINT_MAX;
c->tty.cy = UINT_MAX;
c->tty.rupper = UINT_MAX;
c->tty.rlower = UINT_MAX;
recalculate_sizes();
/* Always redraw this client. */
server_redraw_client(c);
}
|
