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
|
/* $OpenBSD: cmd-load-buffer.c,v 1.46 2016/10/16 19:04:05 nicm Exp $ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
*
* 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 <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "tmux.h"
/*
* Loads a paste buffer from a file.
*/
static enum cmd_retval cmd_load_buffer_exec(struct cmd *, struct cmdq_item *);
static void cmd_load_buffer_callback(struct client *, int, void *);
const struct cmd_entry cmd_load_buffer_entry = {
.name = "load-buffer",
.alias = "loadb",
.args = { "b:", 1, 1 },
.usage = CMD_BUFFER_USAGE " path",
.flags = CMD_AFTERHOOK,
.exec = cmd_load_buffer_exec
};
struct cmd_load_buffer_data {
struct cmdq_item *item;
char *bufname;
};
static enum cmd_retval
cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = self->args;
struct cmd_load_buffer_data *cdata;
struct client *c = item->client;
struct session *s;
FILE *f;
const char *path, *bufname, *cwd;
char *pdata, *new_pdata, *cause, *file;
char resolved[PATH_MAX];
size_t psize;
int ch, error;
bufname = NULL;
if (args_has(args, 'b'))
bufname = args_get(args, 'b');
path = args->argv[0];
if (strcmp(path, "-") == 0) {
cdata = xcalloc(1, sizeof *cdata);
cdata->item = item;
cdata->bufname = xstrdup(bufname);
error = server_set_stdin_callback(c, cmd_load_buffer_callback,
cdata, &cause);
if (error != 0) {
cmdq_error(item, "%s: %s", path, cause);
free(cause);
return (CMD_RETURN_ERROR);
}
return (CMD_RETURN_WAIT);
}
if (c != NULL && c->session == NULL && c->cwd != NULL)
cwd = c->cwd;
else if ((s = c->session) != NULL && s->cwd != NULL)
cwd = s->cwd;
else
cwd = ".";
if (*path == '/')
file = xstrdup(path);
else
xasprintf(&file, "%s/%s", cwd, path);
if (realpath(file, resolved) == NULL &&
strlcpy(resolved, file, sizeof resolved) >= sizeof resolved) {
cmdq_error(item, "%s: %s", file, strerror(ENAMETOOLONG));
return (CMD_RETURN_ERROR);
}
f = fopen(resolved, "rb");
free(file);
if (f == NULL) {
cmdq_error(item, "%s: %s", resolved, strerror(errno));
return (CMD_RETURN_ERROR);
}
pdata = NULL;
psize = 0;
while ((ch = getc(f)) != EOF) {
/* Do not let the server die due to memory exhaustion. */
if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
cmdq_error(item, "realloc error: %s", strerror(errno));
goto error;
}
pdata = new_pdata;
pdata[psize++] = ch;
}
if (ferror(f)) {
cmdq_error(item, "%s: read error", resolved);
goto error;
}
if (pdata != NULL)
pdata[psize] = '\0';
fclose(f);
if (paste_set(pdata, psize, bufname, &cause) != 0) {
cmdq_error(item, "%s", cause);
free(pdata);
free(cause);
return (CMD_RETURN_ERROR);
}
return (CMD_RETURN_NORMAL);
error:
free(pdata);
if (f != NULL)
fclose(f);
return (CMD_RETURN_ERROR);
}
static void
cmd_load_buffer_callback(struct client *c, int closed, void *data)
{
struct cmd_load_buffer_data *cdata = data;
char *pdata, *cause, *saved;
size_t psize;
if (!closed)
return;
c->stdin_callback = NULL;
server_client_unref(c);
if (c->flags & CLIENT_DEAD)
goto out;
psize = EVBUFFER_LENGTH(c->stdin_data);
if (psize == 0 || (pdata = malloc(psize + 1)) == NULL)
goto out;
memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
pdata[psize] = '\0';
evbuffer_drain(c->stdin_data, psize);
if (paste_set(pdata, psize, cdata->bufname, &cause) != 0) {
/* No context so can't use server_client_msg_error. */
if (~c->flags & CLIENT_UTF8) {
saved = cause;
cause = utf8_sanitize(saved);
free(saved);
}
evbuffer_add_printf(c->stderr_data, "%s", cause);
server_client_push_stderr(c);
free(pdata);
free(cause);
}
out:
cdata->item->flags &= ~CMDQ_WAITING;
free(cdata->bufname);
free(cdata);
}
|
