1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
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:
21: #include <ctype.h>
22: #include <errno.h>
23: #include <stdio.h>
24: #include <stdlib.h>
25: #include <string.h>
26: #include <unistd.h>
27:
28: #include "tmux.h"
29:
30: static char *cfg_file;
31: int cfg_finished;
32: static char **cfg_causes;
33: static u_int cfg_ncauses;
34: struct client *cfg_client;
35:
36: static enum cmd_retval
37: cfg_done(__unused struct cmdq_item *item, __unused void *data)
38: {
39: if (cfg_finished)
40: return (CMD_RETURN_NORMAL);
41: cfg_finished = 1;
42:
43: if (!RB_EMPTY(&sessions))
44: cfg_show_causes(RB_MIN(sessions, &sessions));
45:
46: if (cfg_client != NULL)
47: server_client_unref(cfg_client);
48: return (CMD_RETURN_NORMAL);
49: }
50:
51: void
52: set_cfg_file(const char *path)
53: {
54: free(cfg_file);
55: cfg_file = xstrdup(path);
56: }
57:
58: void
59: start_cfg(void)
60: {
61: const char *home;
62: int quiet = 0;
63:
64: cfg_client = TAILQ_FIRST(&clients);
65: if (cfg_client != NULL)
66: cfg_client->references++;
67:
68: load_cfg(TMUX_CONF, cfg_client, NULL, 1);
69:
70: if (cfg_file == NULL && (home = find_home()) != NULL) {
71: xasprintf(&cfg_file, "%s/.tmux.conf", home);
72: quiet = 1;
73: }
74: if (cfg_file != NULL)
75: load_cfg(cfg_file, cfg_client, NULL, quiet);
76:
77: cmdq_append(cfg_client, cmdq_get_callback(cfg_done, NULL));
78: }
79:
80: int
81: load_cfg(const char *path, struct client *c, struct cmdq_item *item, int quiet)
82: {
83: FILE *f;
84: const char delim[3] = { '\\', '\\', '\0' };
85: u_int found = 0;
86: size_t line = 0;
87: char *buf, *cause1, *p, *q, *s;
88: struct cmd_list *cmdlist;
89: struct cmdq_item *new_item;
90: int condition = 0;
91: struct format_tree *ft;
92:
93: log_debug("loading %s", path);
94: if ((f = fopen(path, "rb")) == NULL) {
95: if (errno == ENOENT && quiet)
96: return (0);
97: cfg_add_cause("%s: %s", path, strerror(errno));
98: return (-1);
99: }
100:
101: while ((buf = fparseln(f, NULL, &line, delim, 0)) != NULL) {
102: log_debug("%s: %s", path, buf);
103:
104: p = buf;
105: while (isspace((u_char)*p))
106: p++;
107: if (*p == '\0') {
108: free(buf);
109: continue;
110: }
111: q = p + strlen(p) - 1;
112: while (q != p && isspace((u_char)*q))
113: *q-- = '\0';
114:
115: if (condition != 0 && strcmp(p, "%endif") == 0) {
116: condition = 0;
117: continue;
118: }
119: if (strncmp(p, "%if ", 4) == 0) {
120: if (condition != 0) {
121: cfg_add_cause("%s:%zu: nested %%if", path,
122: line);
123: continue;
124: }
125: ft = format_create(NULL, FORMAT_NONE, FORMAT_NOJOBS);
126:
127: s = p + 3;
128: while (isspace((u_char)*s))
129: s++;
130: s = format_expand(ft, s);
131: if (*s != '\0' && (s[0] != '0' || s[1] != '\0'))
132: condition = 1;
133: else
134: condition = -1;
135: free(s);
136:
137: format_free(ft);
138: continue;
139: }
140: if (condition == -1)
141: continue;
142:
143: cmdlist = cmd_string_parse(p, path, line, &cause1);
144: if (cmdlist == NULL) {
145: free(buf);
146: if (cause1 == NULL)
147: continue;
148: cfg_add_cause("%s:%zu: %s", path, line, cause1);
149: free(cause1);
150: continue;
151: }
152: free(buf);
153:
154: if (cmdlist == NULL)
155: continue;
156: new_item = cmdq_get_command(cmdlist, NULL, NULL, 0);
157: if (item != NULL)
158: cmdq_insert_after(item, new_item);
159: else
160: cmdq_append(c, new_item);
161: cmd_list_free(cmdlist);
162:
163: found++;
164: }
165: fclose(f);
166:
167: return (found);
168: }
169:
170: void
171: cfg_add_cause(const char *fmt, ...)
172: {
173: va_list ap;
174: char *msg;
175:
176: va_start(ap, fmt);
177: xvasprintf(&msg, fmt, ap);
178: va_end(ap);
179:
180: cfg_ncauses++;
181: cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes);
182: cfg_causes[cfg_ncauses - 1] = msg;
183: }
184:
185: void
186: cfg_print_causes(struct cmdq_item *item)
187: {
188: u_int i;
189:
190: for (i = 0; i < cfg_ncauses; i++) {
191: cmdq_print(item, "%s", cfg_causes[i]);
192: free(cfg_causes[i]);
193: }
194:
195: free(cfg_causes);
196: cfg_causes = NULL;
197: cfg_ncauses = 0;
198: }
199:
200: void
201: cfg_show_causes(struct session *s)
202: {
203: struct window_pane *wp;
204: u_int i;
205:
206: if (s == NULL || cfg_ncauses == 0)
207: return;
208: wp = s->curw->window->active;
209:
210: window_pane_set_mode(wp, &window_copy_mode);
211: window_copy_init_for_output(wp);
212: for (i = 0; i < cfg_ncauses; i++) {
213: window_copy_add(wp, "%s", cfg_causes[i]);
214: free(cfg_causes[i]);
215: }
216:
217: free(cfg_causes);
218: cfg_causes = NULL;
219: cfg_ncauses = 0;
220: }
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