1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include "tmux.h"
25
26 /*
27 * Set an environment variable.
28 */
29
30 enum cmd_retval cmd_set_environment_exec(struct cmd *, struct cmd_q *);
31
32 const struct cmd_entry cmd_set_environment_entry = {
33 .name = "set-environment",
34 .alias = "setenv",
35
36 .args = { "grt:u", 1, 2 },
37 .usage = "[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
38
39 .tflag = CMD_SESSION_CANFAIL,
40
41 .flags = 0,
42 .exec = cmd_set_environment_exec
43 };
44
45 enum cmd_retval
cmd_set_environment_exec(struct cmd * self,struct cmd_q * cmdq)46 cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
47 {
48 struct args *args = self->args;
49 struct environ *env;
50 const char *name, *value, *target;
51
52 name = args->argv[0];
53 if (*name == '\0') {
54 cmdq_error(cmdq, "empty variable name");
55 return (CMD_RETURN_ERROR);
56 }
57 if (strchr(name, '=') != NULL) {
58 cmdq_error(cmdq, "variable name contains =");
59 return (CMD_RETURN_ERROR);
60 }
61
62 if (args->argc < 2)
63 value = NULL;
64 else
65 value = args->argv[1];
66
67 if (args_has(self->args, 'g'))
68 env = global_environ;
69 else {
70 if (cmdq->state.tflag.s == NULL) {
71 target = args_get(args, 't');
72 if (target != NULL)
73 cmdq_error(cmdq, "no such session: %s", target);
74 else
75 cmdq_error(cmdq, "no current session");
76 return (CMD_RETURN_ERROR);
77 }
78 env = cmdq->state.tflag.s->environ;
79 }
80
81 if (args_has(self->args, 'u')) {
82 if (value != NULL) {
83 cmdq_error(cmdq, "can't specify a value with -u");
84 return (CMD_RETURN_ERROR);
85 }
86 environ_unset(env, name);
87 } else if (args_has(self->args, 'r')) {
88 if (value != NULL) {
89 cmdq_error(cmdq, "can't specify a value with -r");
90 return (CMD_RETURN_ERROR);
91 }
92 environ_clear(env, name);
93 } else {
94 if (value == NULL) {
95 cmdq_error(cmdq, "no value specified");
96 return (CMD_RETURN_ERROR);
97 }
98 environ_set(env, name, "%s", value);
99 }
100
101 return (CMD_RETURN_NORMAL);
102 }
103