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/* $OpenBSD: cfg.c,v 1.81 2020/05/16 14:26:33 nicm Exp $ */
/*
* Copyright (c) 2008 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 <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <util.h>
#include "tmux.h"
struct client *cfg_client;
static char *cfg_file;
int cfg_finished;
static char **cfg_causes;
static u_int cfg_ncauses;
static struct cmdq_item *cfg_item;
static enum cmd_retval
cfg_client_done(__unused struct cmdq_item *item, __unused void *data)
{
if (!cfg_finished)
return (CMD_RETURN_WAIT);
return (CMD_RETURN_NORMAL);
}
static enum cmd_retval
cfg_done(__unused struct cmdq_item *item, __unused void *data)
{
if (cfg_finished)
return (CMD_RETURN_NORMAL);
cfg_finished = 1;
if (!RB_EMPTY(&sessions))
cfg_show_causes(RB_MIN(sessions, &sessions));
if (cfg_item != NULL)
cmdq_continue(cfg_item);
status_prompt_load_history();
return (CMD_RETURN_NORMAL);
}
void
set_cfg_file(const char *path)
{
free(cfg_file);
cfg_file = xstrdup(path);
}
void
start_cfg(void)
{
struct client *c;
char **paths;
u_int i, n;
/*
* Configuration files are loaded without a client, so commands are run
* in the global queue with item->client NULL.
*
* However, we must block the initial client (but just the initial
* client) so that its command runs after the configuration is loaded.
* Because start_cfg() is called so early, we can be sure the client's
* command queue is currently empty and our callback will be at the
* front - we need to get in before MSG_COMMAND.
*/
cfg_client = c = TAILQ_FIRST(&clients);
if (c != NULL) {
cfg_item = cmdq_get_callback(cfg_client_done, NULL);
cmdq_append(c, cfg_item);
}
if (cfg_file == NULL) {
expand_paths(TMUX_CONF, &paths, &n);
for (i = 0; i < n; i++) {
load_cfg(paths[i], c, NULL, CMD_PARSE_QUIET, NULL);
free(paths[i]);
}
free(paths);
} else
load_cfg(cfg_file, c, NULL, 0, NULL);
cmdq_append(NULL, cmdq_get_callback(cfg_done, NULL));
}
int
load_cfg(const char *path, struct client *c, struct cmdq_item *item, int flags,
struct cmdq_item **new_item)
{
FILE *f;
struct cmd_parse_input pi;
struct cmd_parse_result *pr;
struct cmdq_item *new_item0;
if (new_item != NULL)
*new_item = NULL;
log_debug("loading %s", path);
if ((f = fopen(path, "rb")) == NULL) {
if (errno == ENOENT && (flags & CMD_PARSE_QUIET))
return (0);
cfg_add_cause("%s: %s", path, strerror(errno));
return (-1);
}
memset(&pi, 0, sizeof pi);
pi.flags = flags;
pi.file = path;
pi.line = 1;
pi.item = item;
pi.c = c;
pr = cmd_parse_from_file(f, &pi);
fclose(f);
if (pr->status == CMD_PARSE_EMPTY)
return (0);
if (pr->status == CMD_PARSE_ERROR) {
cfg_add_cause("%s", pr->error);
free(pr->error);
return (-1);
}
if (flags & CMD_PARSE_PARSEONLY) {
cmd_list_free(pr->cmdlist);
return (0);
}
new_item0 = cmdq_get_command(pr->cmdlist, NULL);
if (item != NULL)
new_item0 = cmdq_insert_after(item, new_item0);
else
new_item0 = cmdq_append(NULL, new_item0);
cmd_list_free(pr->cmdlist);
if (new_item != NULL)
*new_item = new_item0;
return (0);
}
int
load_cfg_from_buffer(const void *buf, size_t len, const char *path,
struct client *c, struct cmdq_item *item, int flags,
struct cmdq_item **new_item)
{
struct cmd_parse_input pi;
struct cmd_parse_result *pr;
struct cmdq_item *new_item0;
if (new_item != NULL)
*new_item = NULL;
log_debug("loading %s", path);
memset(&pi, 0, sizeof pi);
pi.flags = flags;
pi.file = path;
pi.line = 1;
pi.item = item;
pi.c = c;
pr = cmd_parse_from_buffer(buf, len, &pi);
if (pr->status == CMD_PARSE_EMPTY)
return (0);
if (pr->status == CMD_PARSE_ERROR) {
cfg_add_cause("%s", pr->error);
free(pr->error);
return (-1);
}
if (flags & CMD_PARSE_PARSEONLY) {
cmd_list_free(pr->cmdlist);
return (0);
}
new_item0 = cmdq_get_command(pr->cmdlist, NULL);
if (item != NULL)
new_item0 = cmdq_insert_after(item, new_item0);
else
new_item0 = cmdq_append(NULL, new_item0);
cmd_list_free(pr->cmdlist);
if (new_item != NULL)
*new_item = new_item0;
return (0);
}
void
cfg_add_cause(const char *fmt, ...)
{
va_list ap;
char *msg;
va_start(ap, fmt);
xvasprintf(&msg, fmt, ap);
va_end(ap);
cfg_ncauses++;
cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes);
cfg_causes[cfg_ncauses - 1] = msg;
}
void
cfg_print_causes(struct cmdq_item *item)
{
u_int i;
for (i = 0; i < cfg_ncauses; i++) {
cmdq_print(item, "%s", cfg_causes[i]);
free(cfg_causes[i]);
}
free(cfg_causes);
cfg_causes = NULL;
cfg_ncauses = 0;
}
void
cfg_show_causes(struct session *s)
{
struct window_pane *wp;
struct window_mode_entry *wme;
u_int i;
if (s == NULL || cfg_ncauses == 0)
return;
wp = s->curw->window->active;
wme = TAILQ_FIRST(&wp->modes);
if (wme == NULL || wme->mode != &window_view_mode)
window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
for (i = 0; i < cfg_ncauses; i++) {
window_copy_add(wp, "%s", cfg_causes[i]);
free(cfg_causes[i]);
}
free(cfg_causes);
cfg_causes = NULL;
cfg_ncauses = 0;
}
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