Annotation of src/usr.bin/tmux/tmux.c, Revision 1.141
1.141 ! nicm 1: /* $OpenBSD: tmux.c,v 1.140 2015/08/30 22:40:25 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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: #include <sys/stat.h>
21:
22: #include <errno.h>
1.55 nicm 23: #include <event.h>
1.91 nicm 24: #include <fcntl.h>
1.132 nicm 25: #include <getopt.h>
1.119 nicm 26: #include <locale.h>
1.1 nicm 27: #include <paths.h>
28: #include <pwd.h>
29: #include <stdlib.h>
30: #include <string.h>
31: #include <unistd.h>
32:
33: #include "tmux.h"
34:
35: #ifdef DEBUG
1.54 nicm 36: extern char *malloc_options;
1.1 nicm 37: #endif
38:
1.63 nicm 39: struct options global_options; /* server options */
1.12 nicm 40: struct options global_s_options; /* session options */
41: struct options global_w_options; /* window options */
1.29 nicm 42: struct environ global_environ;
1.1 nicm 43:
1.92 nicm 44: char *cfg_file;
45: char *shell_cmd;
1.1 nicm 46: int debug_level;
47: time_t start_time;
1.132 nicm 48: char socket_path[PATH_MAX];
1.70 nicm 49:
1.1 nicm 50: __dead void usage(void);
1.92 nicm 51: char *makesocketpath(const char *);
1.55 nicm 52:
1.1 nicm 53: __dead void
54: usage(void)
55: {
1.4 sobrado 56: fprintf(stderr,
1.136 jmc 57: "usage: %s [-2Cluv] [-c shell-command] [-f file] [-L socket-name]\n"
1.41 nicm 58: " [-S socket-path] [command [flags]]\n",
1.1 nicm 59: __progname);
60: exit(1);
61: }
62:
63: void
64: logfile(const char *name)
65: {
66: char *path;
67:
68: if (debug_level > 0) {
1.32 nicm 69: xasprintf(&path, "tmux-%s-%ld.log", name, (long) getpid());
1.130 nicm 70: log_open(path);
1.112 nicm 71: free(path);
1.1 nicm 72: }
73: }
74:
1.39 nicm 75: const char *
76: getshell(void)
77: {
78: struct passwd *pw;
79: const char *shell;
80:
81: shell = getenv("SHELL");
82: if (checkshell(shell))
83: return (shell);
84:
85: pw = getpwuid(getuid());
86: if (pw != NULL && checkshell(pw->pw_shell))
87: return (pw->pw_shell);
88:
89: return (_PATH_BSHELL);
90: }
91:
92: int
93: checkshell(const char *shell)
94: {
1.105 nicm 95: if (shell == NULL || *shell == '\0' || *shell != '/')
96: return (0);
97: if (areshell(shell))
1.39 nicm 98: return (0);
99: if (access(shell, X_OK) != 0)
100: return (0);
101: return (1);
102: }
103:
104: int
105: areshell(const char *shell)
106: {
107: const char *progname, *ptr;
108:
109: if ((ptr = strrchr(shell, '/')) != NULL)
110: ptr++;
111: else
112: ptr = shell;
113: progname = __progname;
114: if (*progname == '-')
115: progname++;
116: if (strcmp(ptr, progname) == 0)
117: return (1);
118: return (0);
1.107 nicm 119: }
120:
1.1 nicm 121: char *
1.92 nicm 122: makesocketpath(const char *label)
1.1 nicm 123: {
1.132 nicm 124: char base[PATH_MAX], realbase[PATH_MAX], *path, *s;
1.1 nicm 125: struct stat sb;
126: u_int uid;
127:
128: uid = getuid();
1.118 nicm 129: if ((s = getenv("TMUX_TMPDIR")) != NULL && *s != '\0')
1.135 nicm 130: xsnprintf(base, sizeof base, "%s/tmux-%u", s, uid);
1.118 nicm 131: else if ((s = getenv("TMPDIR")) != NULL && *s != '\0')
132: xsnprintf(base, sizeof base, "%s/tmux-%u", s, uid);
133: else
1.102 nicm 134: xsnprintf(base, sizeof base, "%s/tmux-%u", _PATH_TMP, uid);
1.1 nicm 135:
136: if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
137: return (NULL);
138:
139: if (lstat(base, &sb) != 0)
140: return (NULL);
141: if (!S_ISDIR(sb.st_mode)) {
142: errno = ENOTDIR;
143: return (NULL);
144: }
1.134 nicm 145: if (sb.st_uid != uid || (sb.st_mode & S_IRWXO) != 0) {
1.1 nicm 146: errno = EACCES;
147: return (NULL);
148: }
149:
1.113 nicm 150: if (realpath(base, realbase) == NULL)
151: strlcpy(realbase, base, sizeof realbase);
152:
153: xasprintf(&path, "%s/%s", realbase, label);
1.1 nicm 154: return (path);
155: }
156:
1.101 nicm 157: void
158: setblocking(int fd, int state)
159: {
160: int mode;
161:
162: if ((mode = fcntl(fd, F_GETFL)) != -1) {
163: if (!state)
164: mode |= O_NONBLOCK;
165: else
166: mode &= ~O_NONBLOCK;
167: fcntl(fd, F_SETFL, mode);
168: }
169: }
170:
1.138 nicm 171: const char *
1.137 nicm 172: find_home(void)
173: {
174: struct passwd *pw;
175: const char *home;
176:
177: home = getenv("HOME");
178: if (home == NULL || *home == '\0') {
179: pw = getpwuid(getuid());
180: if (pw != NULL)
181: home = pw->pw_dir;
182: else
183: home = NULL;
184: }
185:
1.138 nicm 186: return (home);
1.137 nicm 187: }
188:
1.1 nicm 189: int
190: main(int argc, char **argv)
191: {
1.132 nicm 192: char *s, *path, *label, **var, tmp[PATH_MAX];
1.128 nicm 193: const char *home;
1.141 ! nicm 194: int opt, flags, keys;
1.54 nicm 195:
196: #ifdef DEBUG
197: malloc_options = (char *) "AFGJPX";
198: #endif
1.119 nicm 199:
200: setlocale(LC_TIME, "");
1.1 nicm 201:
1.140 nicm 202: if (**argv == '-')
203: flags = CLIENT_LOGIN;
204: else
205: flags = 0;
206:
1.92 nicm 207: label = path = NULL;
1.117 nicm 208: while ((opt = getopt(argc, argv, "2c:Cdf:lL:qS:uUv")) != -1) {
1.41 nicm 209: switch (opt) {
1.1 nicm 210: case '2':
1.124 nicm 211: flags |= CLIENT_256COLOURS;
1.1 nicm 212: break;
1.46 nicm 213: case 'c':
1.112 nicm 214: free(shell_cmd);
1.92 nicm 215: shell_cmd = xstrdup(optarg);
1.111 nicm 216: break;
217: case 'C':
1.124 nicm 218: if (flags & CLIENT_CONTROL)
219: flags |= CLIENT_CONTROLCONTROL;
1.111 nicm 220: else
1.124 nicm 221: flags |= CLIENT_CONTROL;
1.37 nicm 222: break;
1.1 nicm 223: case 'f':
1.112 nicm 224: free(cfg_file);
1.1 nicm 225: cfg_file = xstrdup(optarg);
1.41 nicm 226: break;
227: case 'l':
1.140 nicm 228: flags |= CLIENT_LOGIN;
1.1 nicm 229: break;
230: case 'L':
1.112 nicm 231: free(label);
1.1 nicm 232: label = xstrdup(optarg);
233: break;
1.37 nicm 234: case 'q':
235: break;
1.1 nicm 236: case 'S':
1.112 nicm 237: free(path);
1.1 nicm 238: path = xstrdup(optarg);
239: break;
240: case 'u':
1.124 nicm 241: flags |= CLIENT_UTF8;
1.1 nicm 242: break;
243: case 'v':
244: debug_level++;
245: break;
1.53 deraadt 246: default:
1.1 nicm 247: usage();
1.53 deraadt 248: }
249: }
1.1 nicm 250: argc -= optind;
251: argv += optind;
252:
1.92 nicm 253: if (shell_cmd != NULL && argc != 0)
1.46 nicm 254: usage();
255:
1.124 nicm 256: if (!(flags & CLIENT_UTF8)) {
1.15 nicm 257: /*
258: * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
259: * exist (in that order) to contain UTF-8, it is a safe
260: * assumption that either they are using a UTF-8 terminal, or
261: * if not they know that output from UTF-8-capable programs may
262: * be wrong.
263: */
1.106 nicm 264: if ((s = getenv("LC_ALL")) == NULL || *s == '\0') {
265: if ((s = getenv("LC_CTYPE")) == NULL || *s == '\0')
1.15 nicm 266: s = getenv("LANG");
267: }
1.26 nicm 268: if (s != NULL && (strcasestr(s, "UTF-8") != NULL ||
269: strcasestr(s, "UTF8") != NULL))
1.124 nicm 270: flags |= CLIENT_UTF8;
1.15 nicm 271: }
272:
1.42 nicm 273: environ_init(&global_environ);
1.62 nicm 274: for (var = environ; *var != NULL; var++)
1.42 nicm 275: environ_put(&global_environ, *var);
1.125 nicm 276: if (getcwd(tmp, sizeof tmp) != NULL)
277: environ_set(&global_environ, "PWD", tmp);
1.63 nicm 278:
279: options_init(&global_options, NULL);
1.99 nicm 280: options_table_populate_tree(server_options_table, &global_options);
1.42 nicm 281:
1.12 nicm 282: options_init(&global_s_options, NULL);
1.99 nicm 283: options_table_populate_tree(session_options_table, &global_s_options);
1.131 nicm 284: options_set_string(&global_s_options, "default-shell", "%s",
285: getshell());
1.44 nicm 286:
1.99 nicm 287: options_init(&global_w_options, NULL);
288: options_table_populate_tree(window_options_table, &global_w_options);
1.42 nicm 289:
1.99 nicm 290: /* Enable UTF-8 if the first client is on UTF-8 terminal. */
1.124 nicm 291: if (flags & CLIENT_UTF8) {
1.99 nicm 292: options_set_number(&global_s_options, "status-utf8", 1);
1.100 nicm 293: options_set_number(&global_s_options, "mouse-utf8", 1);
1.99 nicm 294: options_set_number(&global_w_options, "utf8", 1);
1.42 nicm 295: }
1.94 nicm 296:
1.99 nicm 297: /* Override keys to vi if VISUAL or EDITOR are set. */
1.94 nicm 298: if ((s = getenv("VISUAL")) != NULL || (s = getenv("EDITOR")) != NULL) {
299: if (strrchr(s, '/') != NULL)
300: s = strrchr(s, '/') + 1;
301: if (strstr(s, "vi") != NULL)
302: keys = MODEKEY_VI;
1.99 nicm 303: else
304: keys = MODEKEY_EMACS;
305: options_set_number(&global_s_options, "status-keys", keys);
306: options_set_number(&global_w_options, "mode-keys", keys);
1.94 nicm 307: }
1.1 nicm 308:
1.92 nicm 309: /* Locate the configuration file. */
1.1 nicm 310: if (cfg_file == NULL) {
1.137 nicm 311: home = find_home();
1.128 nicm 312: if (home != NULL) {
313: xasprintf(&cfg_file, "%s/.tmux.conf", home);
314: if (access(cfg_file, R_OK) != 0 && errno == ENOENT) {
315: free(cfg_file);
316: cfg_file = NULL;
317: }
1.1 nicm 318: }
319: }
1.62 nicm 320:
1.68 nicm 321: /*
1.92 nicm 322: * Figure out the socket path. If specified on the command-line with -S
323: * or -L, use it, otherwise try $TMUX or assume -L default.
1.68 nicm 324: */
325: if (path == NULL) {
1.92 nicm 326: /* If no -L, use the environment. */
1.68 nicm 327: if (label == NULL) {
1.141 ! nicm 328: s = getenv("TMUX");
! 329: if (s != NULL) {
! 330: path = xstrdup(s);
! 331: path[strcspn (path, ",")] = '\0';
! 332: if (*path == '\0') {
! 333: free(path);
! 334: label = xstrdup("default");
! 335: }
! 336: }
1.92 nicm 337: else
1.68 nicm 338: label = xstrdup("default");
339: }
340:
341: /* -L or default set. */
342: if (label != NULL) {
1.92 nicm 343: if ((path = makesocketpath(label)) == NULL) {
1.123 nicm 344: fprintf(stderr, "can't create socket: %s\n",
1.141 ! nicm 345: strerror(errno));
1.68 nicm 346: exit(1);
347: }
348: }
1.1 nicm 349: }
1.112 nicm 350: free(label);
1.127 nicm 351:
1.141 ! nicm 352: if (strlcpy(socket_path, path, sizeof socket_path) >=
! 353: sizeof socket_path) {
1.127 nicm 354: fprintf(stderr, "socket path too long: %s\n", path);
355: exit(1);
356: }
1.112 nicm 357: free(path);
1.1 nicm 358:
1.92 nicm 359: /* Set process title. */
360: setproctitle("%s (%s)", __progname, socket_path);
1.1 nicm 361:
1.92 nicm 362: /* Pass control to the client. */
1.139 nicm 363: exit(client_main(event_init(), argc, argv, flags));
1.1 nicm 364: }
![[BACK]](/icons/back.gif){kind=icon}
Return to tmux.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux