mirror of
https://github.com/tmux/tmux.git
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330 lines
7.0 KiB
C
330 lines
7.0 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <login_cap.h>
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#include <pwd.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "tmux.h"
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int server_lock_callback(void *, const char *);
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void
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server_fill_environ(struct session *s, struct environ *env)
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{
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char tmuxvar[MAXPATHLEN], *term;
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u_int idx;
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if (session_index(s, &idx) != 0)
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fatalx("session not found");
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xsnprintf(tmuxvar, sizeof tmuxvar,
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"%s,%ld,%u", socket_path, (long) getpid(), idx);
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environ_set(env, "TMUX", tmuxvar);
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term = options_get_string(&s->options, "default-terminal");
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environ_set(env, "TERM", term);
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}
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void
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server_write_error(struct client *c, const char *msg)
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{
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struct msg_print_data printdata;
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strlcpy(printdata.msg, msg, sizeof printdata.msg);
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server_write_client(c, MSG_ERROR, &printdata, sizeof printdata);
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}
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void
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server_write_client(
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struct client *c, enum msgtype type, const void *buf, size_t len)
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{
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struct imsgbuf *ibuf = &c->ibuf;
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if (c->flags & CLIENT_BAD)
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return;
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log_debug("writing %d to client %d", type, c->ibuf.fd);
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imsg_compose(ibuf, type, PROTOCOL_VERSION, -1, -1, (void *) buf, len);
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}
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void
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server_write_session(
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struct session *s, enum msgtype type, const void *buf, size_t len)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (c->session == s)
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server_write_client(c, type, buf, len);
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}
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}
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void
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server_redraw_client(struct client *c)
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{
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c->flags |= CLIENT_REDRAW;
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}
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void
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server_status_client(struct client *c)
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{
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c->flags |= CLIENT_STATUS;
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}
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void
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server_redraw_session(struct session *s)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (c->session == s)
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server_redraw_client(c);
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}
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}
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void
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server_status_session(struct session *s)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (c->session == s)
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server_status_client(c);
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}
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}
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void
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server_redraw_window(struct window *w)
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{
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struct client *c;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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if (c->session->curw->window == w)
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server_redraw_client(c);
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}
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w->flags |= WINDOW_REDRAW;
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}
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void
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server_status_window(struct window *w)
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{
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struct session *s;
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u_int i;
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/*
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* This is slightly different. We want to redraw the status line of any
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* clients containing this window rather than any where it is the
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* current window.
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*/
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for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
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s = ARRAY_ITEM(&sessions, i);
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if (s != NULL && session_has(s, w))
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server_status_session(s);
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}
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}
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void
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server_lock(void)
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{
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struct client *c;
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static struct passwd *pw, pwstore;
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static char pwbuf[_PW_BUF_LEN];
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u_int i;
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if (server_locked)
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return;
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if (getpwuid_r(getuid(), &pwstore, pwbuf, sizeof pwbuf, &pw) != 0) {
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server_locked_pw = NULL;
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return;
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}
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server_locked_pw = pw;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session == NULL)
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continue;
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status_prompt_clear(c);
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status_prompt_set(c,
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"Password:", server_lock_callback, NULL, c, PROMPT_HIDDEN);
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server_redraw_client(c);
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}
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server_locked = 1;
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}
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int
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server_lock_callback(unused void *data, const char *s)
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{
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return (server_unlock(s));
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}
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int
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server_unlock(const char *s)
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{
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struct client *c;
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login_cap_t *lc;
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u_int i;
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char *out;
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u_int failures, tries, backoff;
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if (!server_locked || server_locked_pw == NULL)
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return (0);
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server_activity = time(NULL);
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if (server_activity < password_backoff)
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return (-2);
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if (server_password != NULL) {
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if (s == NULL)
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return (-1);
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out = crypt(s, server_password);
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if (strcmp(out, server_password) != 0)
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goto wrong;
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}
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL)
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continue;
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status_prompt_clear(c);
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server_redraw_client(c);
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}
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server_locked = 0;
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password_failures = 0;
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password_backoff = 0;
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return (0);
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wrong:
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password_backoff = server_activity;
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password_failures++;
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->prompt_buffer == NULL)
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continue;
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*c->prompt_buffer = '\0';
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c->prompt_index = 0;
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server_redraw_client(c);
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}
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/*
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* Start slowing down after "login-backoff" attempts and reset every
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* "login-tries" attempts.
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*/
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lc = login_getclass(server_locked_pw->pw_class);
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if (lc != NULL) {
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tries = login_getcapnum(lc, (char *) "login-tries", 10, 10);
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backoff = login_getcapnum(lc, (char *) "login-backoff", 3, 3);
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} else {
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tries = 10;
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backoff = 3;
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}
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failures = password_failures % tries;
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if (failures > backoff) {
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password_backoff += ((failures - backoff) * tries / 2);
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return (-2);
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}
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return (-1);
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}
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void
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server_kill_window(struct window *w)
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{
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struct session *s;
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struct winlink *wl;
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struct client *c;
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u_int i, j;
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int destroyed;
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for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
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s = ARRAY_ITEM(&sessions, i);
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if (s == NULL || !session_has(s, w))
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continue;
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if ((wl = winlink_find_by_window(&s->windows, w)) == NULL)
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continue;
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destroyed = session_detach(s, wl);
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for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
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c = ARRAY_ITEM(&clients, j);
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if (c == NULL || c->session != s)
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continue;
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if (destroyed) {
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c->session = NULL;
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server_write_client(c, MSG_EXIT, NULL, 0);
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} else
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server_redraw_client(c);
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}
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}
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recalculate_sizes();
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}
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void
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server_set_identify(struct client *c)
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{
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struct timeval tv;
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int delay;
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delay = options_get_number(&c->session->options, "display-panes-time");
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tv.tv_sec = delay / 1000;
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tv.tv_usec = (delay % 1000) * 1000L;
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if (gettimeofday(&c->identify_timer, NULL) != 0)
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fatal("gettimeofday");
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timeradd(&c->identify_timer, &tv, &c->identify_timer);
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c->flags |= CLIENT_IDENTIFY;
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c->tty.flags |= (TTY_FREEZE|TTY_NOCURSOR);
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server_redraw_client(c);
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}
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void
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server_clear_identify(struct client *c)
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{
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if (c->flags & CLIENT_IDENTIFY) {
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c->flags &= ~CLIENT_IDENTIFY;
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c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
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server_redraw_client(c);
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}
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}
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