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/* $OpenBSD: cmd-set-environment.c,v 1.28 2021/08/21 10:22:39 nicm Exp $ */
/*
* 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"
/*
* Set an environment variable.
*/
static enum cmd_retval cmd_set_environment_exec(struct cmd *,
struct cmdq_item *);
const struct cmd_entry cmd_set_environment_entry = {
.name = "set-environment",
.alias = "setenv",
.args = { "Fhgrt:u", 1, 2, NULL },
.usage = "[-Fhgru] " CMD_TARGET_SESSION_USAGE " name [value]",
.target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
.flags = CMD_AFTERHOOK,
.exec = cmd_set_environment_exec
};
static enum cmd_retval
cmd_set_environment_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = cmd_get_args(self);
struct cmd_find_state *target = cmdq_get_target(item);
struct environ *env;
const char *name = args_string(args, 0), *value;
const char *tflag;
char *expanded = NULL;
enum cmd_retval retval = CMD_RETURN_NORMAL;
if (*name == '\0') {
cmdq_error(item, "empty variable name");
return (CMD_RETURN_ERROR);
}
if (strchr(name, '=') != NULL) {
cmdq_error(item, "variable name contains =");
return (CMD_RETURN_ERROR);
}
if (args_count(args) < 2)
value = NULL;
else
value = args_string(args, 1);
if (value != NULL && args_has(args, 'F')) {
expanded = format_single_from_target(item, value);
value = expanded;
}
if (args_has(args, 'g'))
env = global_environ;
else {
if (target->s == NULL) {
tflag = args_get(args, 't');
if (tflag != NULL)
cmdq_error(item, "no such session: %s", tflag);
else
cmdq_error(item, "no current session");
retval = CMD_RETURN_ERROR;
goto out;
}
env = target->s->environ;
}
if (args_has(args, 'u')) {
if (value != NULL) {
cmdq_error(item, "can't specify a value with -u");
retval = CMD_RETURN_ERROR;
goto out;
}
environ_unset(env, name);
} else if (args_has(args, 'r')) {
if (value != NULL) {
cmdq_error(item, "can't specify a value with -r");
retval = CMD_RETURN_ERROR;
goto out;
}
environ_clear(env, name);
} else {
if (value == NULL) {
cmdq_error(item, "no value specified");
retval = CMD_RETURN_ERROR;
goto out;
}
if (args_has(args, 'h'))
environ_set(env, name, ENVIRON_HIDDEN, "%s", value);
else
environ_set(env, name, 0, "%s", value);
}
out:
free(expanded);
return (retval);
}
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