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Remove the "info" message mechanism, this was only used for about five
mostly useless and annoying messages. Change those commands to silence
on success like all the others. Still accept the -q command line flag
and "quiet" server option for now.

/* $OpenBSD: cmd-run-shell.c,v 1.25 2014/04/17 07:55:43 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.
 */

enum cmd_retval	 cmd_run_shell_exec(struct cmd *, struct cmd_q *);

void	cmd_run_shell_callback(struct job *);
void	cmd_run_shell_free(void *);
void	cmd_run_shell_print(struct job *, const char *);

const struct cmd_entry cmd_run_shell_entry = {
	"run-shell", "run",
	"bt:", 1, 1,
	"[-b] " CMD_TARGET_PANE_USAGE " shell-command",
	0,
	NULL,
	cmd_run_shell_exec
};

struct cmd_run_shell_data {
	char		*cmd;
	struct cmd_q	*cmdq;
	int		 bflag;
	int		 wp_id;
};

void
cmd_run_shell_print(struct job *job, const char *msg)
{
	struct cmd_run_shell_data	*cdata = job->data;
	struct window_pane		*wp = NULL;

	if (cdata->wp_id != -1)
		wp = window_pane_find_by_id(cdata->wp_id);
	if (wp == NULL) {
		cmdq_print(cdata->cmdq, "%s", msg);
		return;
	}

	if (window_pane_set_mode(wp, &window_copy_mode) == 0)
		window_copy_init_for_output(wp);
	if (wp->mode == &window_copy_mode)
		window_copy_add(wp, "%s", msg);
}

enum cmd_retval
cmd_run_shell_exec(struct cmd *self, struct cmd_q *cmdq)
{
	struct args			*args = self->args;
	struct cmd_run_shell_data	*cdata;
	char				*shellcmd;
	struct client			*c;
	struct session			*s = NULL;
	struct winlink			*wl = NULL;
	struct window_pane		*wp = NULL;
	struct format_tree		*ft;

	if (args_has(args, 't'))
		wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
	else {
		c = cmd_find_client(cmdq, NULL, 1);
		if (c != NULL && c->session != NULL) {
			s = c->session;
			wl = s->curw;
			wp = wl->window->active;
		}
	}

	ft = format_create();
	if (s != NULL)
		format_session(ft, s);
	if (s != NULL && wl != NULL)
		format_winlink(ft, s, wl);
	if (wp != NULL)
		format_window_pane(ft, wp);
	shellcmd = format_expand(ft, args->argv[0]);
	format_free(ft);

	cdata = xmalloc(sizeof *cdata);
	cdata->cmd = shellcmd;
	cdata->bflag = args_has(args, 'b');
	cdata->wp_id = wp != NULL ? (int) wp->id : -1;

	cdata->cmdq = cmdq;
	cmdq->references++;

	job_run(shellcmd, s, cmd_run_shell_callback, cmd_run_shell_free, cdata);

	if (cdata->bflag)
		return (CMD_RETURN_NORMAL);
	return (CMD_RETURN_WAIT);
}

void
cmd_run_shell_callback(struct job *job)
{
	struct cmd_run_shell_data	*cdata = job->data;
	struct cmd_q			*cmdq = cdata->cmdq;
	char				*cmd, *msg, *line;
	size_t				 size;
	int				 retcode;
	u_int				 lines;

	if (cmdq->dead)
		return;
	cmd = cdata->cmd;

	lines = 0;
	do {
		if ((line = evbuffer_readline(job->event->input)) != NULL) {
			cmd_run_shell_print(job, line);
			free(line);
			lines++;
		}
	} while (line != NULL);

	size = EVBUFFER_LENGTH(job->event->input);
	if (size != 0) {
		line = xmalloc(size + 1);
		memcpy(line, EVBUFFER_DATA(job->event->input), size);
		line[size] = '\0';

		cmd_run_shell_print(job, line);
		lines++;

		free(line);
	}

	msg = NULL;
	if (WIFEXITED(job->status)) {
		if ((retcode = WEXITSTATUS(job->status)) != 0)
			xasprintf(&msg, "'%s' returned %d", cmd, retcode);
	} else if (WIFSIGNALED(job->status)) {
		retcode = WTERMSIG(job->status);
		xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
	}
	if (msg != NULL)
		cmd_run_shell_print(job, msg);
	free(msg);
}

void
cmd_run_shell_free(void *data)
{
	struct cmd_run_shell_data	*cdata = data;
	struct cmd_q			*cmdq = cdata->cmdq;

	if (!cmdq_free(cmdq) && !cdata->bflag)
		cmdq_continue(cmdq);

	free(cdata->cmd);
	free(cdata);
}