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/* $OpenBSD: cmd-run-shell.c,v 1.59 2019/06/18 11:08:42 nicm Exp $ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
* Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.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 <sys/wait.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Runs a command without a window.
*/
static enum cmd_retval cmd_run_shell_exec(struct cmd *, struct cmdq_item *);
static void cmd_run_shell_callback(struct job *);
static void cmd_run_shell_free(void *);
static void cmd_run_shell_print(struct job *, const char *);
const struct cmd_entry cmd_run_shell_entry = {
.name = "run-shell",
.alias = "run",
.args = { "bt:", 1, 1 },
.usage = "[-b] " CMD_TARGET_PANE_USAGE " shell-command",
.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
.flags = 0,
.exec = cmd_run_shell_exec
};
struct cmd_run_shell_data {
char *cmd;
struct cmdq_item *item;
int wp_id;
};
static void
cmd_run_shell_print(struct job *job, const char *msg)
{
struct cmd_run_shell_data *cdata = job_get_data(job);
struct window_pane *wp = NULL;
struct cmd_find_state fs;
struct window_mode_entry *wme;
if (cdata->wp_id != -1)
wp = window_pane_find_by_id(cdata->wp_id);
if (wp == NULL) {
if (cdata->item != NULL) {
cmdq_print(cdata->item, "%s", msg);
return;
}
if (cmd_find_from_nothing(&fs, 0) != 0)
return;
wp = fs.wp;
if (wp == NULL)
return;
}
wme = TAILQ_FIRST(&wp->modes);
if (wme == NULL || wme->mode != &window_view_mode)
window_pane_set_mode(wp, &window_view_mode, NULL, NULL);
window_copy_add(wp, "%s", msg);
}
static enum cmd_retval
cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = self->args;
struct cmd_run_shell_data *cdata;
struct client *c = cmd_find_client(item, NULL, 1);
struct session *s = item->target.s;
struct winlink *wl = item->target.wl;
struct window_pane *wp = item->target.wp;
cdata = xcalloc(1, sizeof *cdata);
cdata->cmd = format_single(item, args->argv[0], c, s, wl, wp);
if (args_has(args, 't') && wp != NULL)
cdata->wp_id = wp->id;
else
cdata->wp_id = -1;
if (!args_has(args, 'b'))
cdata->item = item;
if (job_run(cdata->cmd, s, server_client_get_cwd(item->client, s), NULL,
cmd_run_shell_callback, cmd_run_shell_free, cdata, 0) == NULL) {
cmdq_error(item, "failed to run command: %s", cdata->cmd);
free(cdata);
return (CMD_RETURN_ERROR);
}
if (args_has(args, 'b'))
return (CMD_RETURN_NORMAL);
return (CMD_RETURN_WAIT);
}
static void
cmd_run_shell_callback(struct job *job)
{
struct cmd_run_shell_data *cdata = job_get_data(job);
struct bufferevent *event = job_get_event(job);
char *cmd = cdata->cmd, *msg = NULL, *line;
size_t size;
int retcode, status;
do {
if ((line = evbuffer_readline(event->input)) != NULL) {
cmd_run_shell_print(job, line);
free(line);
}
} while (line != NULL);
size = EVBUFFER_LENGTH(event->input);
if (size != 0) {
line = xmalloc(size + 1);
memcpy(line, EVBUFFER_DATA(event->input), size);
line[size] = '\0';
cmd_run_shell_print(job, line);
free(line);
}
status = job_get_status(job);
if (WIFEXITED(status)) {
if ((retcode = WEXITSTATUS(status)) != 0)
xasprintf(&msg, "'%s' returned %d", cmd, retcode);
} else if (WIFSIGNALED(status)) {
retcode = WTERMSIG(status);
xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
}
if (msg != NULL)
cmd_run_shell_print(job, msg);
free(msg);
if (cdata->item != NULL)
cmdq_continue(cdata->item);
}
static void
cmd_run_shell_free(void *data)
{
struct cmd_run_shell_data *cdata = data;
free(cdata->cmd);
free(cdata);
}
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