Annotation of src/usr.bin/tmux/tmux.c, Revision 1.125
1.125 ! nicm 1: /* $OpenBSD: tmux.c,v 1.124 2013/10/10 12:12:08 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>
1.119 nicm 25: #include <locale.h>
1.1 nicm 26: #include <paths.h>
27: #include <pwd.h>
28: #include <stdlib.h>
29: #include <string.h>
30: #include <unistd.h>
31:
32: #include "tmux.h"
33:
34: #ifdef DEBUG
1.54 nicm 35: extern char *malloc_options;
1.1 nicm 36: #endif
37:
1.63 nicm 38: struct options global_options; /* server options */
1.12 nicm 39: struct options global_s_options; /* session options */
40: struct options global_w_options; /* window options */
1.29 nicm 41: struct environ global_environ;
1.1 nicm 42:
1.78 nicm 43: struct event_base *ev_base;
44:
1.92 nicm 45: char *cfg_file;
46: char *shell_cmd;
1.1 nicm 47: int debug_level;
48: time_t start_time;
1.92 nicm 49: char socket_path[MAXPATHLEN];
1.41 nicm 50: int login_shell;
1.92 nicm 51: char *environ_path;
1.103 nicm 52: pid_t environ_pid = -1;
1.116 nicm 53: int environ_session_id = -1;
1.70 nicm 54:
1.1 nicm 55: __dead void usage(void);
1.92 nicm 56: void parseenvironment(void);
57: char *makesocketpath(const char *);
1.55 nicm 58:
1.1 nicm 59: __dead void
60: usage(void)
61: {
1.4 sobrado 62: fprintf(stderr,
1.52 nicm 63: "usage: %s [-28lquv] [-c shell-command] [-f file] [-L socket-name]\n"
1.41 nicm 64: " [-S socket-path] [command [flags]]\n",
1.1 nicm 65: __progname);
66: exit(1);
67: }
68:
69: void
70: logfile(const char *name)
71: {
72: char *path;
73:
74: if (debug_level > 0) {
1.32 nicm 75: xasprintf(&path, "tmux-%s-%ld.log", name, (long) getpid());
1.109 nicm 76: log_open(debug_level, path);
1.112 nicm 77: free(path);
1.1 nicm 78: }
79: }
80:
1.39 nicm 81: const char *
82: getshell(void)
83: {
84: struct passwd *pw;
85: const char *shell;
86:
87: shell = getenv("SHELL");
88: if (checkshell(shell))
89: return (shell);
90:
91: pw = getpwuid(getuid());
92: if (pw != NULL && checkshell(pw->pw_shell))
93: return (pw->pw_shell);
94:
95: return (_PATH_BSHELL);
96: }
97:
98: int
99: checkshell(const char *shell)
100: {
1.105 nicm 101: if (shell == NULL || *shell == '\0' || *shell != '/')
102: return (0);
103: if (areshell(shell))
1.39 nicm 104: return (0);
105: if (access(shell, X_OK) != 0)
106: return (0);
107: return (1);
108: }
109:
110: int
111: areshell(const char *shell)
112: {
113: const char *progname, *ptr;
114:
115: if ((ptr = strrchr(shell, '/')) != NULL)
116: ptr++;
117: else
118: ptr = shell;
119: progname = __progname;
120: if (*progname == '-')
121: progname++;
122: if (strcmp(ptr, progname) == 0)
123: return (1);
124: return (0);
1.107 nicm 125: }
126:
1.50 nicm 127: void
1.92 nicm 128: parseenvironment(void)
1.50 nicm 129: {
1.103 nicm 130: char *env, path[256];
131: long pid;
1.116 nicm 132: int id;
1.50 nicm 133:
134: if ((env = getenv("TMUX")) == NULL)
135: return;
136:
1.116 nicm 137: if (sscanf(env, "%255[^,],%ld,%d", path, &pid, &id) != 3)
1.50 nicm 138: return;
1.103 nicm 139: environ_path = xstrdup(path);
140: environ_pid = pid;
1.116 nicm 141: environ_session_id = id;
1.50 nicm 142: }
143:
1.1 nicm 144: char *
1.92 nicm 145: makesocketpath(const char *label)
1.1 nicm 146: {
1.113 nicm 147: char base[MAXPATHLEN], realbase[MAXPATHLEN], *path, *s;
1.1 nicm 148: struct stat sb;
149: u_int uid;
150:
151: uid = getuid();
1.118 nicm 152: if ((s = getenv("TMUX_TMPDIR")) != NULL && *s != '\0')
153: xsnprintf(base, sizeof base, "%s/", s);
154: else if ((s = getenv("TMPDIR")) != NULL && *s != '\0')
155: xsnprintf(base, sizeof base, "%s/tmux-%u", s, uid);
156: else
1.102 nicm 157: xsnprintf(base, sizeof base, "%s/tmux-%u", _PATH_TMP, uid);
1.1 nicm 158:
159: if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
160: return (NULL);
161:
162: if (lstat(base, &sb) != 0)
163: return (NULL);
164: if (!S_ISDIR(sb.st_mode)) {
165: errno = ENOTDIR;
166: return (NULL);
167: }
1.123 nicm 168: if (sb.st_uid != uid || (!S_ISDIR(sb.st_mode) &&
169: sb.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
1.1 nicm 170: errno = EACCES;
171: return (NULL);
172: }
173:
1.113 nicm 174: if (realpath(base, realbase) == NULL)
175: strlcpy(realbase, base, sizeof realbase);
176:
177: xasprintf(&path, "%s/%s", realbase, label);
1.1 nicm 178: return (path);
179: }
180:
1.101 nicm 181: void
182: setblocking(int fd, int state)
183: {
184: int mode;
185:
186: if ((mode = fcntl(fd, F_GETFL)) != -1) {
187: if (!state)
188: mode |= O_NONBLOCK;
189: else
190: mode &= ~O_NONBLOCK;
191: fcntl(fd, F_SETFL, mode);
192: }
193: }
194:
1.55 nicm 195: __dead void
196: shell_exec(const char *shell, const char *shellcmd)
197: {
198: const char *shellname, *ptr;
199: char *argv0;
200:
201: ptr = strrchr(shell, '/');
202: if (ptr != NULL && *(ptr + 1) != '\0')
203: shellname = ptr + 1;
204: else
205: shellname = shell;
206: if (login_shell)
207: xasprintf(&argv0, "-%s", shellname);
208: else
209: xasprintf(&argv0, "%s", shellname);
210: setenv("SHELL", shell, 1);
1.90 nicm 211:
1.101 nicm 212: setblocking(STDIN_FILENO, 1);
213: setblocking(STDOUT_FILENO, 1);
214: setblocking(STDERR_FILENO, 1);
1.90 nicm 215: closefrom(STDERR_FILENO + 1);
1.55 nicm 216:
217: execl(shell, argv0, "-c", shellcmd, (char *) NULL);
218: fatal("execl failed");
219: }
220:
1.1 nicm 221: int
222: main(int argc, char **argv)
223: {
1.92 nicm 224: struct passwd *pw;
1.125 ! nicm 225: char *s, *path, *label, *home, **var, tmp[MAXPATHLEN];
1.94 nicm 226: int opt, flags, quiet, keys;
1.54 nicm 227:
228: #ifdef DEBUG
229: malloc_options = (char *) "AFGJPX";
230: #endif
1.119 nicm 231:
232: setlocale(LC_TIME, "");
1.1 nicm 233:
1.94 nicm 234: quiet = flags = 0;
1.92 nicm 235: label = path = NULL;
1.41 nicm 236: login_shell = (**argv == '-');
1.117 nicm 237: while ((opt = getopt(argc, argv, "2c:Cdf:lL:qS:uUv")) != -1) {
1.41 nicm 238: switch (opt) {
1.1 nicm 239: case '2':
1.124 nicm 240: flags |= CLIENT_256COLOURS;
1.1 nicm 241: break;
1.46 nicm 242: case 'c':
1.112 nicm 243: free(shell_cmd);
1.92 nicm 244: shell_cmd = xstrdup(optarg);
1.111 nicm 245: break;
246: case 'C':
1.124 nicm 247: if (flags & CLIENT_CONTROL)
248: flags |= CLIENT_CONTROLCONTROL;
1.111 nicm 249: else
1.124 nicm 250: flags |= CLIENT_CONTROL;
1.37 nicm 251: break;
1.1 nicm 252: case 'f':
1.112 nicm 253: free(cfg_file);
1.1 nicm 254: cfg_file = xstrdup(optarg);
1.41 nicm 255: break;
256: case 'l':
257: login_shell = 1;
1.1 nicm 258: break;
259: case 'L':
1.112 nicm 260: free(label);
1.1 nicm 261: label = xstrdup(optarg);
262: break;
1.37 nicm 263: case 'q':
1.63 nicm 264: quiet = 1;
1.37 nicm 265: break;
1.1 nicm 266: case 'S':
1.112 nicm 267: free(path);
1.1 nicm 268: path = xstrdup(optarg);
269: break;
270: case 'u':
1.124 nicm 271: flags |= CLIENT_UTF8;
1.1 nicm 272: break;
273: case 'v':
274: debug_level++;
275: break;
1.53 deraadt 276: default:
1.1 nicm 277: usage();
1.53 deraadt 278: }
279: }
1.1 nicm 280: argc -= optind;
281: argv += optind;
282:
1.92 nicm 283: if (shell_cmd != NULL && argc != 0)
1.46 nicm 284: usage();
285:
1.124 nicm 286: if (!(flags & CLIENT_UTF8)) {
1.15 nicm 287: /*
288: * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
289: * exist (in that order) to contain UTF-8, it is a safe
290: * assumption that either they are using a UTF-8 terminal, or
291: * if not they know that output from UTF-8-capable programs may
292: * be wrong.
293: */
1.106 nicm 294: if ((s = getenv("LC_ALL")) == NULL || *s == '\0') {
295: if ((s = getenv("LC_CTYPE")) == NULL || *s == '\0')
1.15 nicm 296: s = getenv("LANG");
297: }
1.26 nicm 298: if (s != NULL && (strcasestr(s, "UTF-8") != NULL ||
299: strcasestr(s, "UTF8") != NULL))
1.124 nicm 300: flags |= CLIENT_UTF8;
1.15 nicm 301: }
302:
1.42 nicm 303: environ_init(&global_environ);
1.62 nicm 304: for (var = environ; *var != NULL; var++)
1.42 nicm 305: environ_put(&global_environ, *var);
1.125 ! nicm 306: if (getcwd(tmp, sizeof tmp) != NULL)
! 307: environ_set(&global_environ, "PWD", tmp);
1.63 nicm 308:
309: options_init(&global_options, NULL);
1.99 nicm 310: options_table_populate_tree(server_options_table, &global_options);
311: options_set_number(&global_options, "quiet", quiet);
1.42 nicm 312:
1.12 nicm 313: options_init(&global_s_options, NULL);
1.99 nicm 314: options_table_populate_tree(session_options_table, &global_s_options);
315: options_set_string(&global_s_options, "default-shell", "%s", getshell());
1.44 nicm 316:
1.99 nicm 317: options_init(&global_w_options, NULL);
318: options_table_populate_tree(window_options_table, &global_w_options);
1.42 nicm 319:
1.99 nicm 320: /* Enable UTF-8 if the first client is on UTF-8 terminal. */
1.124 nicm 321: if (flags & CLIENT_UTF8) {
1.99 nicm 322: options_set_number(&global_s_options, "status-utf8", 1);
1.100 nicm 323: options_set_number(&global_s_options, "mouse-utf8", 1);
1.99 nicm 324: options_set_number(&global_w_options, "utf8", 1);
1.42 nicm 325: }
1.94 nicm 326:
1.99 nicm 327: /* Override keys to vi if VISUAL or EDITOR are set. */
1.94 nicm 328: if ((s = getenv("VISUAL")) != NULL || (s = getenv("EDITOR")) != NULL) {
329: if (strrchr(s, '/') != NULL)
330: s = strrchr(s, '/') + 1;
331: if (strstr(s, "vi") != NULL)
332: keys = MODEKEY_VI;
1.99 nicm 333: else
334: keys = MODEKEY_EMACS;
335: options_set_number(&global_s_options, "status-keys", keys);
336: options_set_number(&global_w_options, "mode-keys", keys);
1.94 nicm 337: }
1.1 nicm 338:
1.92 nicm 339: /* Locate the configuration file. */
1.1 nicm 340: if (cfg_file == NULL) {
341: home = getenv("HOME");
342: if (home == NULL || *home == '\0') {
343: pw = getpwuid(getuid());
344: if (pw != NULL)
345: home = pw->pw_dir;
346: }
1.120 nicm 347: xasprintf(&cfg_file, "%s/.tmux.conf", home);
1.69 nicm 348: if (access(cfg_file, R_OK) != 0 && errno == ENOENT) {
1.112 nicm 349: free(cfg_file);
1.1 nicm 350: cfg_file = NULL;
351: }
352: }
1.62 nicm 353:
1.68 nicm 354: /*
1.92 nicm 355: * Figure out the socket path. If specified on the command-line with -S
356: * or -L, use it, otherwise try $TMUX or assume -L default.
1.68 nicm 357: */
1.92 nicm 358: parseenvironment();
1.68 nicm 359: if (path == NULL) {
1.92 nicm 360: /* If no -L, use the environment. */
1.68 nicm 361: if (label == NULL) {
1.92 nicm 362: if (environ_path != NULL)
363: path = xstrdup(environ_path);
364: else
1.68 nicm 365: label = xstrdup("default");
366: }
367:
368: /* -L or default set. */
369: if (label != NULL) {
1.92 nicm 370: if ((path = makesocketpath(label)) == NULL) {
1.123 nicm 371: fprintf(stderr, "can't create socket: %s\n",
372: strerror(errno));
1.68 nicm 373: exit(1);
374: }
375: }
1.1 nicm 376: }
1.112 nicm 377: free(label);
1.113 nicm 378: strlcpy(socket_path, path, sizeof socket_path);
1.112 nicm 379: free(path);
1.1 nicm 380:
1.92 nicm 381: /* Set process title. */
382: setproctitle("%s (%s)", __progname, socket_path);
1.1 nicm 383:
1.92 nicm 384: /* Pass control to the client. */
1.78 nicm 385: ev_base = event_init();
1.92 nicm 386: exit(client_main(argc, argv, flags));
1.1 nicm 387: }
![[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