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
|
/* $OpenBSD$ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* 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 <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Show environment.
*/
static enum cmd_retval cmd_show_environment_exec(struct cmd *,
struct cmdq_item *);
static char *cmd_show_environment_escape(struct environ_entry *);
static void cmd_show_environment_print(struct cmd *, struct cmdq_item *,
struct environ_entry *);
const struct cmd_entry cmd_show_environment_entry = {
.name = "show-environment",
.alias = "showenv",
.args = { "hgst:", 0, 1 },
.usage = "[-hgs] " CMD_TARGET_SESSION_USAGE " [name]",
.target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
.flags = CMD_AFTERHOOK,
.exec = cmd_show_environment_exec
};
static char *
cmd_show_environment_escape(struct environ_entry *envent)
{
const char *value = envent->value;
char c, *out, *ret;
out = ret = xmalloc(strlen(value) * 2 + 1); /* at most twice the size */
while ((c = *value++) != '\0') {
/* POSIX interprets $ ` " and \ in double quotes. */
if (c == '$' || c == '`' || c == '"' || c == '\\')
*out++ = '\\';
*out++ = c;
}
*out = '\0';
return (ret);
}
static void
cmd_show_environment_print(struct cmd *self, struct cmdq_item *item,
struct environ_entry *envent)
{
struct args *args = self->args;
char *escaped;
if (!args_has(args, 'h') && (envent->flags & ENVIRON_HIDDEN))
return;
if (args_has(args, 'h') && (~envent->flags & ENVIRON_HIDDEN))
return;
if (!args_has(self->args, 's')) {
if (envent->value != NULL)
cmdq_print(item, "%s=%s", envent->name, envent->value);
else
cmdq_print(item, "-%s", envent->name);
return;
}
if (envent->value != NULL) {
escaped = cmd_show_environment_escape(envent);
cmdq_print(item, "%s=\"%s\"; export %s;", envent->name, escaped,
envent->name);
free(escaped);
} else
cmdq_print(item, "unset %s;", envent->name);
}
static enum cmd_retval
cmd_show_environment_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = self->args;
struct environ *env;
struct environ_entry *envent;
const char *target;
if ((target = args_get(args, 't')) != NULL) {
if (item->target.s == NULL) {
cmdq_error(item, "no such session: %s", target);
return (CMD_RETURN_ERROR);
}
}
if (args_has(self->args, 'g'))
env = global_environ;
else {
if (item->target.s == NULL) {
target = args_get(args, 't');
if (target != NULL)
cmdq_error(item, "no such session: %s", target);
else
cmdq_error(item, "no current session");
return (CMD_RETURN_ERROR);
}
env = item->target.s->environ;
}
if (args->argc != 0) {
envent = environ_find(env, args->argv[0]);
if (envent == NULL) {
cmdq_error(item, "unknown variable: %s", args->argv[0]);
return (CMD_RETURN_ERROR);
}
cmd_show_environment_print(self, item, envent);
return (CMD_RETURN_NORMAL);
}
envent = environ_first(env);
while (envent != NULL) {
cmd_show_environment_print(self, item, envent);
envent = environ_next(envent);
}
return (CMD_RETURN_NORMAL);
}
|