Annotation of src/usr.bin/tmux/cfg.c, Revision 1.76
1.76 ! nicm 1: /* $OpenBSD: cfg.c,v 1.75 2019/06/20 06:51:36 nicm Exp $ */
1.1 nicm 2:
3: /*
1.44 nicm 4: * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.21 nicm 21: #include <ctype.h>
1.1 nicm 22: #include <errno.h>
23: #include <stdio.h>
1.15 nicm 24: #include <stdlib.h>
1.1 nicm 25: #include <string.h>
1.32 tobias 26: #include <util.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
1.63 nicm 30: struct client *cfg_client;
1.58 nicm 31: static char *cfg_file;
32: int cfg_finished;
33: static char **cfg_causes;
34: static u_int cfg_ncauses;
35: static struct cmdq_item *cfg_item;
36:
37: static enum cmd_retval
38: cfg_client_done(__unused struct cmdq_item *item, __unused void *data)
39: {
40: if (!cfg_finished)
41: return (CMD_RETURN_WAIT);
42: return (CMD_RETURN_NORMAL);
43: }
1.40 nicm 44:
1.49 nicm 45: static enum cmd_retval
1.50 nicm 46: cfg_done(__unused struct cmdq_item *item, __unused void *data)
1.49 nicm 47: {
48: if (cfg_finished)
49: return (CMD_RETURN_NORMAL);
50: cfg_finished = 1;
51:
52: if (!RB_EMPTY(&sessions))
53: cfg_show_causes(RB_MIN(sessions, &sessions));
1.57 nicm 54:
1.58 nicm 55: if (cfg_item != NULL)
1.74 nicm 56: cmdq_continue(cfg_item);
1.58 nicm 57:
1.57 nicm 58: status_prompt_load_history();
1.49 nicm 59:
60: return (CMD_RETURN_NORMAL);
61: }
1.40 nicm 62:
63: void
1.41 nicm 64: set_cfg_file(const char *path)
65: {
66: free(cfg_file);
67: cfg_file = xstrdup(path);
68: }
69:
1.76 ! nicm 70: static char *
! 71: expand_cfg_file(const char *path, const char *home)
! 72: {
! 73: char *expanded, *name;
! 74: const char *end;
! 75: struct environ_entry *value;
! 76:
! 77: if (strncmp(path, "~/", 2) == 0) {
! 78: if (home == NULL)
! 79: return (NULL);
! 80: xasprintf(&expanded, "%s%s", home, path + 1);
! 81: return (expanded);
! 82: }
! 83:
! 84: if (*path == '$') {
! 85: end = strchr(path, '/');
! 86: if (end == NULL)
! 87: name = xstrdup(path + 1);
! 88: else
! 89: name = xstrndup(path + 1, end - path - 1);
! 90: value = environ_find(global_environ, name);
! 91: free(name);
! 92: if (value == NULL)
! 93: return (NULL);
! 94: if (end == NULL)
! 95: end = "";
! 96: xasprintf(&expanded, "%s%s", value->value, end);
! 97: return (expanded);
! 98: }
! 99:
! 100: return (xstrdup(path));
! 101: }
! 102:
1.41 nicm 103: void
1.40 nicm 104: start_cfg(void)
105: {
1.76 ! nicm 106: const char *home = find_home();
1.58 nicm 107: struct client *c;
1.76 ! nicm 108: char *path, *copy, *next, *expanded;
1.40 nicm 109:
1.56 nicm 110: /*
1.71 nicm 111: * Configuration files are loaded without a client, so commands are run
112: * in the global queue with item->client NULL.
1.58 nicm 113: *
114: * However, we must block the initial client (but just the initial
115: * client) so that its command runs after the configuration is loaded.
116: * Because start_cfg() is called so early, we can be sure the client's
117: * command queue is currently empty and our callback will be at the
118: * front - we need to get in before MSG_COMMAND.
1.56 nicm 119: */
1.63 nicm 120: cfg_client = c = TAILQ_FIRST(&clients);
1.58 nicm 121: if (c != NULL) {
122: cfg_item = cmdq_get_callback(cfg_client_done, NULL);
123: cmdq_append(c, cfg_item);
124: }
1.40 nicm 125:
1.76 ! nicm 126: if (cfg_file == NULL) {
! 127: path = copy = xstrdup(TMUX_CONF);
! 128: while ((next = strsep(&path, ":")) != NULL) {
! 129: expanded = expand_cfg_file(next, home);
! 130: if (expanded == NULL) {
! 131: log_debug("couldn't expand %s", next);
! 132: continue;
! 133: }
! 134: log_debug("expanded %s to %s", next, expanded);
! 135: load_cfg(expanded, c, NULL, CMD_PARSE_QUIET, NULL);
! 136: free(expanded);
! 137: }
! 138: free(copy);
! 139: } else
! 140: load_cfg(cfg_file, c, NULL, 0, NULL);
1.40 nicm 141:
1.56 nicm 142: cmdq_append(NULL, cmdq_get_callback(cfg_done, NULL));
1.40 nicm 143: }
1.1 nicm 144:
1.28 nicm 145: int
1.70 nicm 146: load_cfg(const char *path, struct client *c, struct cmdq_item *item, int flags,
147: struct cmdq_item **new_item)
1.1 nicm 148: {
1.50 nicm 149: FILE *f;
1.71 nicm 150: struct cmd_parse_input pi;
151: struct cmd_parse_result *pr;
1.70 nicm 152: struct cmdq_item *new_item0;
1.61 nicm 153:
1.71 nicm 154: if (new_item != NULL)
155: *new_item = NULL;
1.1 nicm 156:
1.29 nicm 157: log_debug("loading %s", path);
1.1 nicm 158: if ((f = fopen(path, "rb")) == NULL) {
1.71 nicm 159: if (errno == ENOENT && (flags & CMD_PARSE_QUIET))
1.45 tim 160: return (0);
161: cfg_add_cause("%s: %s", path, strerror(errno));
1.28 nicm 162: return (-1);
1.25 nicm 163: }
164:
1.71 nicm 165: memset(&pi, 0, sizeof pi);
166: pi.flags = flags;
167: pi.file = path;
1.72 nicm 168: pi.line = 1;
1.73 nicm 169: pi.item = item;
1.75 nicm 170: pi.c = c;
1.13 nicm 171:
1.71 nicm 172: pr = cmd_parse_from_file(f, &pi);
173: fclose(f);
174: if (pr->status == CMD_PARSE_EMPTY)
175: return (0);
176: if (pr->status == CMD_PARSE_ERROR) {
177: cfg_add_cause("%s", pr->error);
178: free(pr->error);
179: return (-1);
180: }
181: if (flags & CMD_PARSE_PARSEONLY) {
182: cmd_list_free(pr->cmdlist);
183: return (0);
1.1 nicm 184: }
1.61 nicm 185:
1.71 nicm 186: new_item0 = cmdq_get_command(pr->cmdlist, NULL, NULL, 0);
187: if (item != NULL)
188: cmdq_insert_after(item, new_item0);
189: else
1.75 nicm 190: cmdq_append(NULL, new_item0);
1.71 nicm 191: cmd_list_free(pr->cmdlist);
1.25 nicm 192:
1.70 nicm 193: if (new_item != NULL)
1.71 nicm 194: *new_item = new_item0;
195: return (0);
1.33 nicm 196: }
197:
198: void
1.36 nicm 199: cfg_add_cause(const char *fmt, ...)
1.33 nicm 200: {
1.36 nicm 201: va_list ap;
202: char *msg;
1.33 nicm 203:
204: va_start(ap, fmt);
205: xvasprintf(&msg, fmt, ap);
1.38 nicm 206: va_end(ap);
1.33 nicm 207:
1.35 nicm 208: cfg_ncauses++;
209: cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes);
210: cfg_causes[cfg_ncauses - 1] = msg;
1.33 nicm 211: }
212:
213: void
1.50 nicm 214: cfg_print_causes(struct cmdq_item *item)
1.33 nicm 215: {
216: u_int i;
217:
1.35 nicm 218: for (i = 0; i < cfg_ncauses; i++) {
1.50 nicm 219: cmdq_print(item, "%s", cfg_causes[i]);
1.35 nicm 220: free(cfg_causes[i]);
1.33 nicm 221: }
1.35 nicm 222:
223: free(cfg_causes);
224: cfg_causes = NULL;
1.37 nicm 225: cfg_ncauses = 0;
1.17 nicm 226: }
227:
228: void
1.28 nicm 229: cfg_show_causes(struct session *s)
1.17 nicm 230: {
1.66 nicm 231: struct window_pane *wp;
232: struct window_mode_entry *wme;
233: u_int i;
1.17 nicm 234:
1.35 nicm 235: if (s == NULL || cfg_ncauses == 0)
1.17 nicm 236: return;
237: wp = s->curw->window->active;
238:
1.66 nicm 239: wme = TAILQ_FIRST(&wp->modes);
240: if (wme == NULL || wme->mode != &window_view_mode)
1.65 nicm 241: window_pane_set_mode(wp, &window_view_mode, NULL, NULL);
1.35 nicm 242: for (i = 0; i < cfg_ncauses; i++) {
243: window_copy_add(wp, "%s", cfg_causes[i]);
244: free(cfg_causes[i]);
1.17 nicm 245: }
1.35 nicm 246:
247: free(cfg_causes);
248: cfg_causes = NULL;
1.37 nicm 249: cfg_ncauses = 0;
1.1 nicm 250: }
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