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/* $OpenBSD: cmd-set-environment.c,v 1.16 2015/12/16 21:47:00 nicm Exp $ */
/*
* Copyright (c) 2009 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 <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Set an environment variable.
*/
enum cmd_retval cmd_set_environment_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_set_environment_entry = {
.name = "set-environment",
.alias = "setenv",
.args = { "grt:u", 1, 2 },
.usage = "[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
.tflag = CMD_SESSION_CANFAIL,
.flags = 0,
.exec = cmd_set_environment_exec
};
enum cmd_retval
cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct environ *env;
const char *name, *value;
name = args->argv[0];
if (*name == '\0') {
cmdq_error(cmdq, "empty variable name");
return (CMD_RETURN_ERROR);
}
if (strchr(name, '=') != NULL) {
cmdq_error(cmdq, "variable name contains =");
return (CMD_RETURN_ERROR);
}
if (args->argc < 2)
value = NULL;
else
value = args->argv[1];
if (args_has(self->args, 'g') || cmdq->state.tflag.s == NULL)
env = global_environ;
else
env = cmdq->state.tflag.s->environ;
if (args_has(self->args, 'u')) {
if (value != NULL) {
cmdq_error(cmdq, "can't specify a value with -u");
return (CMD_RETURN_ERROR);
}
environ_unset(env, name);
} else if (args_has(self->args, 'r')) {
if (value != NULL) {
cmdq_error(cmdq, "can't specify a value with -r");
return (CMD_RETURN_ERROR);
}
environ_clear(env, name);
} else {
if (value == NULL) {
cmdq_error(cmdq, "no value specified");
return (CMD_RETURN_ERROR);
}
environ_set(env, name, "%s", value);
}
return (CMD_RETURN_NORMAL);
}
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