+/*
+ * Pseudo-tty backend for pterm.
+ *
+ * Unlike the other backends, data for this one is not neatly
+ * encapsulated into a data structure, because it wouldn't make
+ * sense to do so - the utmp stuff has to be done before a backend
+ * is initialised, and starting a second pterm from the same
+ * process would therefore be infeasible because privileges would
+ * already have been dropped. Hence, I haven't bothered to keep the
+ * data dynamically allocated: instead, the backend handle is just
+ * a null pointer and ignored everywhere.
+ */
+
#define _XOPEN_SOURCE
#define _XOPEN_SOURCE_EXTENDED
-#include <features.h>
+#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <signal.h>
#include <fcntl.h>
#include <termios.h>
+#include <grp.h>
+#include <utmp.h>
+#include <pwd.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
#include <sys/ioctl.h>
+#include <errno.h>
#include "putty.h"
#define TRUE 1
#endif
-int pty_master_fd;
-char **pty_argv;
-
-static void pty_size(void);
+#ifndef UTMP_FILE
+#define UTMP_FILE "/var/run/utmp"
+#endif
+#ifndef WTMP_FILE
+#define WTMP_FILE "/var/log/wtmp"
+#endif
+#ifndef LASTLOG_FILE
+#ifdef _PATH_LASTLOG
+#define LASTLOG_FILE _PATH_LASTLOG
+#else
+#define LASTLOG_FILE "/var/log/lastlog"
+#endif
+#endif
/*
- * Called to set up the pty.
- *
- * Returns an error message, or NULL on success.
- *
- * Also places the canonical host name into `realhost'. It must be
- * freed by the caller.
+ * Set up a default for vaguely sane systems. The idea is that if
+ * OMIT_UTMP is not defined, then at least one of the symbols which
+ * enable particular forms of utmp processing should be, if only so
+ * that a link error can warn you that you should have defined
+ * OMIT_UTMP if you didn't want any. Currently HAVE_PUTUTLINE is
+ * the only such symbol.
*/
-static char *pty_init(char *host, int port, char **realhost, int nodelay)
+#ifndef OMIT_UTMP
+#if !defined HAVE_PUTUTLINE
+#define HAVE_PUTUTLINE
+#endif
+#endif
+
+static Config pty_cfg;
+static int pty_master_fd;
+static void *pty_frontend;
+static char pty_name[FILENAME_MAX];
+static int pty_signal_pipe[2];
+static int pty_child_pid;
+static int pty_term_width, pty_term_height;
+static int pty_child_dead, pty_finished;
+static int pty_exit_code;
+char **pty_argv;
+int use_pty_argv = TRUE;
+
+static void pty_close(void);
+
+#ifndef OMIT_UTMP
+static int pty_utmp_helper_pid, pty_utmp_helper_pipe;
+static int pty_stamped_utmp = 0;
+static struct utmp utmp_entry;
+
+static void setup_utmp(char *ttyname, char *location)
{
- int slavefd;
- char name[FILENAME_MAX];
- pid_t pid, pgrp;
+#ifdef HAVE_LASTLOG
+ struct lastlog lastlog_entry;
+ FILE *lastlog;
+#endif
+ struct passwd *pw;
+ FILE *wtmp;
+ time_t uttime;
+ pw = getpwuid(getuid());
+ memset(&utmp_entry, 0, sizeof(utmp_entry));
+ utmp_entry.ut_type = USER_PROCESS;
+ utmp_entry.ut_pid = getpid();
+ strncpy(utmp_entry.ut_line, ttyname+5, lenof(utmp_entry.ut_line));
+ strncpy(utmp_entry.ut_id, ttyname+8, lenof(utmp_entry.ut_id));
+ strncpy(utmp_entry.ut_user, pw->pw_name, lenof(utmp_entry.ut_user));
+ strncpy(utmp_entry.ut_host, location, lenof(utmp_entry.ut_host));
+ /* Apparently there are some architectures where (struct utmp).ut_time
+ * is not essentially time_t (e.g. Linux amd64). Hence the temporary. */
+ time(&uttime);
+ utmp_entry.ut_time = uttime; /* may truncate */
+
+#if defined HAVE_PUTUTLINE
+ utmpname(UTMP_FILE);
+ setutent();
+ pututline(&utmp_entry);
+ endutent();
+#endif
+
+ if ((wtmp = fopen(WTMP_FILE, "a")) != NULL) {
+ fwrite(&utmp_entry, 1, sizeof(utmp_entry), wtmp);
+ fclose(wtmp);
+ }
+
+#ifdef HAVE_LASTLOG
+ memset(&lastlog_entry, 0, sizeof(lastlog_entry));
+ strncpy(lastlog_entry.ll_line, ttyname+5, lenof(lastlog_entry.ll_line));
+ strncpy(lastlog_entry.ll_host, location, lenof(lastlog_entry.ll_host));
+ time(&lastlog_entry.ll_time);
+ if ((lastlog = fopen(LASTLOG_FILE, "r+")) != NULL) {
+ fseek(lastlog, sizeof(lastlog_entry) * getuid(), SEEK_SET);
+ fwrite(&lastlog_entry, 1, sizeof(lastlog_entry), lastlog);
+ fclose(lastlog);
+ }
+#endif
+
+ pty_stamped_utmp = 1;
+
+}
+
+static void cleanup_utmp(void)
+{
+ FILE *wtmp;
+ time_t uttime;
+
+ if (!pty_stamped_utmp)
+ return;
+
+ utmp_entry.ut_type = DEAD_PROCESS;
+ memset(utmp_entry.ut_user, 0, lenof(utmp_entry.ut_user));
+ time(&uttime);
+ utmp_entry.ut_time = uttime;
+
+ if ((wtmp = fopen(WTMP_FILE, "a")) != NULL) {
+ fwrite(&utmp_entry, 1, sizeof(utmp_entry), wtmp);
+ fclose(wtmp);
+ }
+
+ memset(utmp_entry.ut_line, 0, lenof(utmp_entry.ut_line));
+ utmp_entry.ut_time = 0;
+
+#if defined HAVE_PUTUTLINE
+ utmpname(UTMP_FILE);
+ setutent();
+ pututline(&utmp_entry);
+ endutent();
+#endif
+
+ pty_stamped_utmp = 0; /* ensure we never double-cleanup */
+}
+#endif
+
+static void sigchld_handler(int signum)
+{
+ write(pty_signal_pipe[1], "x", 1);
+}
+
+#ifndef OMIT_UTMP
+static void fatal_sig_handler(int signum)
+{
+ putty_signal(signum, SIG_DFL);
+ cleanup_utmp();
+ setuid(getuid());
+ raise(signum);
+}
+#endif
+
+static void pty_open_master(void)
+{
+#ifdef BSD_PTYS
+ const char chars1[] = "pqrstuvwxyz";
+ const char chars2[] = "0123456789abcdef";
+ const char *p1, *p2;
+ char master_name[20];
+ struct group *gp;
+
+ for (p1 = chars1; *p1; p1++)
+ for (p2 = chars2; *p2; p2++) {
+ sprintf(master_name, "/dev/pty%c%c", *p1, *p2);
+ pty_master_fd = open(master_name, O_RDWR);
+ if (pty_master_fd >= 0) {
+ if (geteuid() == 0 ||
+ access(master_name, R_OK | W_OK) == 0)
+ goto got_one;
+ close(pty_master_fd);
+ }
+ }
+
+ /* If we get here, we couldn't get a tty at all. */
+ fprintf(stderr, "pterm: unable to open a pseudo-terminal device\n");
+ exit(1);
+
+ got_one:
+ strcpy(pty_name, master_name);
+ pty_name[5] = 't'; /* /dev/ptyXX -> /dev/ttyXX */
+
+ /* We need to chown/chmod the /dev/ttyXX device. */
+ gp = getgrnam("tty");
+ chown(pty_name, getuid(), gp ? gp->gr_gid : -1);
+ chmod(pty_name, 0600);
+#else
pty_master_fd = open("/dev/ptmx", O_RDWR);
if (pty_master_fd < 0) {
exit(1);
}
- name[FILENAME_MAX-1] = '\0';
- strncpy(name, ptsname(pty_master_fd), FILENAME_MAX-1);
+ pty_name[FILENAME_MAX-1] = '\0';
+ strncpy(pty_name, ptsname(pty_master_fd), FILENAME_MAX-1);
+#endif
+}
+
+/*
+ * Pre-initialisation. This is here to get around the fact that GTK
+ * doesn't like being run in setuid/setgid programs (probably
+ * sensibly). So before we initialise GTK - and therefore before we
+ * even process the command line - we check to see if we're running
+ * set[ug]id. If so, we open our pty master _now_, chown it as
+ * necessary, and drop privileges. We can always close it again
+ * later. If we're potentially going to be doing utmp as well, we
+ * also fork off a utmp helper process and communicate with it by
+ * means of a pipe; the utmp helper will keep privileges in order
+ * to clean up utmp when we exit (i.e. when its end of our pipe
+ * closes).
+ */
+void pty_pre_init(void)
+{
+#ifndef OMIT_UTMP
+ pid_t pid;
+ int pipefd[2];
+#endif
+
+ /* set the child signal handler straight away; it needs to be set
+ * before we ever fork. */
+ putty_signal(SIGCHLD, sigchld_handler);
+ pty_master_fd = -1;
+
+ if (geteuid() != getuid() || getegid() != getgid()) {
+ pty_open_master();
+ }
+
+#ifndef OMIT_UTMP
+ /*
+ * Fork off the utmp helper.
+ */
+ if (pipe(pipefd) < 0) {
+ perror("pterm: pipe");
+ exit(1);
+ }
+ pid = fork();
+ if (pid < 0) {
+ perror("pterm: fork");
+ exit(1);
+ } else if (pid == 0) {
+ char display[128], buffer[128];
+ int dlen, ret;
+
+ close(pipefd[1]);
+ /*
+ * Now sit here until we receive a display name from the
+ * other end of the pipe, and then stamp utmp. Unstamp utmp
+ * again, and exit, when the pipe closes.
+ */
+
+ dlen = 0;
+ while (1) {
+
+ ret = read(pipefd[0], buffer, lenof(buffer));
+ if (ret <= 0) {
+ cleanup_utmp();
+ _exit(0);
+ } else if (!pty_stamped_utmp) {
+ if (dlen < lenof(display))
+ memcpy(display+dlen, buffer,
+ min(ret, lenof(display)-dlen));
+ if (buffer[ret-1] == '\0') {
+ /*
+ * Now we have a display name. NUL-terminate
+ * it, and stamp utmp.
+ */
+ display[lenof(display)-1] = '\0';
+ /*
+ * Trap as many fatal signals as we can in the
+ * hope of having the best possible chance to
+ * clean up utmp before termination. We are
+ * unfortunately unprotected against SIGKILL,
+ * but that's life.
+ */
+ putty_signal(SIGHUP, fatal_sig_handler);
+ putty_signal(SIGINT, fatal_sig_handler);
+ putty_signal(SIGQUIT, fatal_sig_handler);
+ putty_signal(SIGILL, fatal_sig_handler);
+ putty_signal(SIGABRT, fatal_sig_handler);
+ putty_signal(SIGFPE, fatal_sig_handler);
+ putty_signal(SIGPIPE, fatal_sig_handler);
+ putty_signal(SIGALRM, fatal_sig_handler);
+ putty_signal(SIGTERM, fatal_sig_handler);
+ putty_signal(SIGSEGV, fatal_sig_handler);
+ putty_signal(SIGUSR1, fatal_sig_handler);
+ putty_signal(SIGUSR2, fatal_sig_handler);
+#ifdef SIGBUS
+ putty_signal(SIGBUS, fatal_sig_handler);
+#endif
+#ifdef SIGPOLL
+ putty_signal(SIGPOLL, fatal_sig_handler);
+#endif
+#ifdef SIGPROF
+ putty_signal(SIGPROF, fatal_sig_handler);
+#endif
+#ifdef SIGSYS
+ putty_signal(SIGSYS, fatal_sig_handler);
+#endif
+#ifdef SIGTRAP
+ putty_signal(SIGTRAP, fatal_sig_handler);
+#endif
+#ifdef SIGVTALRM
+ putty_signal(SIGVTALRM, fatal_sig_handler);
+#endif
+#ifdef SIGXCPU
+ putty_signal(SIGXCPU, fatal_sig_handler);
+#endif
+#ifdef SIGXFSZ
+ putty_signal(SIGXFSZ, fatal_sig_handler);
+#endif
+#ifdef SIGIO
+ putty_signal(SIGIO, fatal_sig_handler);
+#endif
+ setup_utmp(pty_name, display);
+ }
+ }
+ }
+ } else {
+ close(pipefd[0]);
+ pty_utmp_helper_pid = pid;
+ pty_utmp_helper_pipe = pipefd[1];
+ }
+#endif
+
+ /* Drop privs. */
+ {
+#ifndef HAVE_NO_SETRESUID
+ int gid = getgid(), uid = getuid();
+ int setresgid(gid_t, gid_t, gid_t);
+ int setresuid(uid_t, uid_t, uid_t);
+ setresgid(gid, gid, gid);
+ setresuid(uid, uid, uid);
+#else
+ setgid(getgid());
+ setuid(getuid());
+#endif
+ }
+}
+
+int pty_select_result(int fd, int event)
+{
+ char buf[4096];
+ int ret;
+ int finished = FALSE;
+
+ if (fd == pty_master_fd && event == 1) {
+
+ ret = read(pty_master_fd, buf, sizeof(buf));
+
+ /*
+ * Clean termination condition is that either ret == 0, or ret
+ * < 0 and errno == EIO. Not sure why the latter, but it seems
+ * to happen. Boo.
+ */
+ if (ret == 0 || (ret < 0 && errno == EIO)) {
+ /*
+ * We assume a clean exit if the pty has closed but the
+ * actual child process hasn't. The only way I can
+ * imagine this happening is if it detaches itself from
+ * the pty and goes daemonic - in which case the
+ * expected usage model would precisely _not_ be for
+ * the pterm window to hang around!
+ */
+ finished = TRUE;
+ if (!pty_child_dead)
+ pty_exit_code = 0;
+ } else if (ret < 0) {
+ perror("read pty master");
+ exit(1);
+ } else if (ret > 0) {
+ from_backend(pty_frontend, 0, buf, ret);
+ }
+ } else if (fd == pty_signal_pipe[0]) {
+ pid_t pid;
+ int status;
+ char c[1];
+
+ read(pty_signal_pipe[0], c, 1); /* ignore its value; it'll be `x' */
+
+ do {
+ pid = waitpid(-1, &status, WNOHANG);
+ if (pid == pty_child_pid &&
+ (WIFEXITED(status) || WIFSIGNALED(status))) {
+ /*
+ * The primary child process died. We could keep
+ * the terminal open for remaining subprocesses to
+ * output to, but conventional wisdom seems to feel
+ * that that's the Wrong Thing for an xterm-alike,
+ * so we bail out now (though we don't necessarily
+ * _close_ the window, depending on the state of
+ * Close On Exit). This would be easy enough to
+ * change or make configurable if necessary.
+ */
+ pty_exit_code = status;
+ pty_child_dead = TRUE;
+ finished = TRUE;
+ }
+ } while(pid > 0);
+ }
+
+ if (finished && !pty_finished) {
+ uxsel_del(pty_master_fd);
+ pty_close();
+ pty_master_fd = -1;
+
+ pty_finished = TRUE;
+
+ /*
+ * This is a slight layering-violation sort of hack: only
+ * if we're not closing on exit (COE is set to Never, or to
+ * Only On Clean and it wasn't a clean exit) do we output a
+ * `terminated' message.
+ */
+ if (pty_cfg.close_on_exit == FORCE_OFF ||
+ (pty_cfg.close_on_exit == AUTO && pty_exit_code != 0)) {
+ char message[512];
+ if (WIFEXITED(pty_exit_code))
+ sprintf(message, "\r\n[pterm: process terminated with exit"
+ " code %d]\r\n", WEXITSTATUS(pty_exit_code));
+ else if (WIFSIGNALED(pty_exit_code))
+#ifdef HAVE_NO_STRSIGNAL
+ sprintf(message, "\r\n[pterm: process terminated on signal"
+ " %d]\r\n", WTERMSIG(pty_exit_code));
+#else
+ sprintf(message, "\r\n[pterm: process terminated on signal"
+ " %d (%.400s)]\r\n", WTERMSIG(pty_exit_code),
+ strsignal(WTERMSIG(pty_exit_code)));
+#endif
+ from_backend(pty_frontend, 0, message, strlen(message));
+ }
+
+ notify_remote_exit(pty_frontend);
+ }
+ return !finished;
+}
+
+static void pty_uxsel_setup(void)
+{
+ uxsel_set(pty_master_fd, 1, pty_select_result);
+ uxsel_set(pty_signal_pipe[0], 1, pty_select_result);
+}
+
+/*
+ * Called to set up the pty.
+ *
+ * Returns an error message, or NULL on success.
+ *
+ * Also places the canonical host name into `realhost'. It must be
+ * freed by the caller.
+ */
+static const char *pty_init(void *frontend, void **backend_handle, Config *cfg,
+ char *host, int port, char **realhost, int nodelay,
+ int keepalive)
+{
+ int slavefd;
+ pid_t pid, pgrp;
+ long windowid;
+
+ pty_frontend = frontend;
+ *backend_handle = NULL; /* we can't sensibly use this, sadly */
+
+ pty_cfg = *cfg; /* structure copy */
+ pty_term_width = cfg->width;
+ pty_term_height = cfg->height;
+
+ if (pty_master_fd < 0)
+ pty_open_master();
+
+ /*
+ * Set the backspace character to be whichever of ^H and ^? is
+ * specified by bksp_is_delete.
+ */
+ {
+ struct termios attrs;
+ tcgetattr(pty_master_fd, &attrs);
+ attrs.c_cc[VERASE] = cfg->bksp_is_delete ? '\177' : '\010';
+ tcsetattr(pty_master_fd, TCSANOW, &attrs);
+ }
+
+#ifndef OMIT_UTMP
+ /*
+ * Stamp utmp (that is, tell the utmp helper process to do so),
+ * or not.
+ */
+ if (!cfg->stamp_utmp) {
+ close(pty_utmp_helper_pipe); /* just let the child process die */
+ pty_utmp_helper_pipe = -1;
+ } else {
+ char *location = get_x_display(pty_frontend);
+ int len = strlen(location)+1, pos = 0; /* +1 to include NUL */
+ while (pos < len) {
+ int ret = write(pty_utmp_helper_pipe, location+pos, len - pos);
+ if (ret < 0) {
+ perror("pterm: writing to utmp helper process");
+ close(pty_utmp_helper_pipe); /* arrgh, just give up */
+ pty_utmp_helper_pipe = -1;
+ break;
+ }
+ pos += ret;
+ }
+ }
+#endif
+
+ windowid = get_windowid(pty_frontend);
/*
* Fork and execute the command.
* We are the child.
*/
- slavefd = open(name, O_RDWR);
+ slavefd = open(pty_name, O_RDWR);
if (slavefd < 0) {
perror("slave pty: open");
- exit(1);
+ _exit(1);
}
close(pty_master_fd);
- close(0);
- close(1);
- close(2);
fcntl(slavefd, F_SETFD, 0); /* don't close on exec */
dup2(slavefd, 0);
dup2(slavefd, 1);
ioctl(slavefd, TIOCSCTTY, 1);
pgrp = getpid();
tcsetpgrp(slavefd, pgrp);
- setpgrp();
- close(open(name, O_WRONLY, 0));
- setpgrp();
+ setpgid(pgrp, pgrp);
+ close(open(pty_name, O_WRONLY, 0));
+ setpgid(pgrp, pgrp);
/* Close everything _else_, for tidiness. */
for (i = 3; i < 1024; i++)
close(i);
{
- char term_env_var[10 + sizeof(cfg.termtype)];
- sprintf(term_env_var, "TERM=%s", cfg.termtype);
+ char term_env_var[10 + sizeof(cfg->termtype)];
+ sprintf(term_env_var, "TERM=%s", cfg->termtype);
putenv(term_env_var);
}
+ {
+ char windowid_env_var[40];
+ sprintf(windowid_env_var, "WINDOWID=%ld", windowid);
+ putenv(windowid_env_var);
+ }
+ {
+ char *e = cfg->environmt;
+ char *var, *varend, *val, *varval;
+ while (*e) {
+ var = e;
+ while (*e && *e != '\t') e++;
+ varend = e;
+ if (*e == '\t') e++;
+ val = e;
+ while (*e) e++;
+ e++;
+
+ varval = dupprintf("%.*s=%s", varend-var, var, val);
+ putenv(varval);
+ /*
+ * We must not free varval, since putenv links it
+ * into the environment _in place_. Weird, but
+ * there we go. Memory usage will be rationalised
+ * as soon as we exec anyway.
+ */
+ }
+ }
+
+ /*
+ * SIGINT and SIGQUIT may have been set to ignored by our
+ * parent, particularly by things like sh -c 'pterm &' and
+ * some window managers. SIGCHLD, meanwhile, was blocked
+ * during pt_main() startup. Reverse all this for our child
+ * process.
+ */
+ putty_signal(SIGINT, SIG_DFL);
+ putty_signal(SIGQUIT, SIG_DFL);
+ block_signal(SIGCHLD, 0);
if (pty_argv)
execvp(pty_argv[0], pty_argv);
- else
- execl(getenv("SHELL"), getenv("SHELL"), NULL);
+ else {
+ char *shell = getenv("SHELL");
+ char *shellname;
+ if (cfg->login_shell) {
+ char *p = strrchr(shell, '/');
+ shellname = snewn(2+strlen(shell), char);
+ p = p ? p+1 : shell;
+ sprintf(shellname, "-%s", p);
+ } else
+ shellname = shell;
+ execl(getenv("SHELL"), shellname, NULL);
+ }
+
/*
* If we're here, exec has gone badly foom.
*/
perror("exec");
- exit(127);
+ _exit(127);
} else {
- close(slavefd);
+ pty_child_pid = pid;
+ pty_child_dead = FALSE;
+ pty_finished = FALSE;
+ }
+
+ if (pipe(pty_signal_pipe) < 0) {
+ perror("pipe");
+ exit(1);
}
+ pty_uxsel_setup();
return NULL;
}
+static void pty_reconfig(void *handle, Config *cfg)
+{
+ /*
+ * We don't have much need to reconfigure this backend, but
+ * unfortunately we do need to pick up the setting of Close On
+ * Exit so we know whether to give a `terminated' message.
+ */
+ pty_cfg = *cfg; /* structure copy */
+}
+
+/*
+ * Stub routine (never called in pterm).
+ */
+static void pty_free(void *handle)
+{
+}
+
/*
* Called to send data down the pty.
*/
-static int pty_send(char *buf, int len)
+static int pty_send(void *handle, char *buf, int len)
{
+ if (pty_master_fd < 0)
+ return 0; /* ignore all writes if fd closed */
+
while (len > 0) {
int ret = write(pty_master_fd, buf, len);
if (ret < 0) {
return 0;
}
+static void pty_close(void)
+{
+ if (pty_master_fd >= 0) {
+ close(pty_master_fd);
+ pty_master_fd = -1;
+ }
+#ifndef OMIT_UTMP
+ if (pty_utmp_helper_pipe >= 0) {
+ close(pty_utmp_helper_pipe); /* this causes utmp to be cleaned up */
+ pty_utmp_helper_pipe = -1;
+ }
+#endif
+}
+
/*
* Called to query the current socket sendability status.
*/
-static int pty_sendbuffer(void)
+static int pty_sendbuffer(void *handle)
{
return 0;
}
/*
* Called to set the size of the window
*/
-static void pty_size(void)
+static void pty_size(void *handle, int width, int height)
{
struct winsize size;
- size.ws_row = (unsigned short)rows;
- size.ws_col = (unsigned short)cols;
+ pty_term_width = width;
+ pty_term_height = height;
+
+ size.ws_row = (unsigned short)pty_term_height;
+ size.ws_col = (unsigned short)pty_term_width;
+ size.ws_xpixel = (unsigned short) pty_term_width *
+ font_dimension(pty_frontend, 0);
+ size.ws_ypixel = (unsigned short) pty_term_height *
+ font_dimension(pty_frontend, 1);
ioctl(pty_master_fd, TIOCSWINSZ, (void *)&size);
return;
}
/*
* Send special codes.
*/
-static void pty_special(Telnet_Special code)
+static void pty_special(void *handle, Telnet_Special code)
{
/* Do nothing! */
return;
}
-static Socket pty_socket(void)
+/*
+ * Return a list of the special codes that make sense in this
+ * protocol.
+ */
+static const struct telnet_special *pty_get_specials(void *handle)
+{
+ /*
+ * Hmm. When I get round to having this actually usable, it
+ * might be quite nice to have the ability to deliver a few
+ * well chosen signals to the child process - SIGINT, SIGTERM,
+ * SIGKILL at least.
+ */
+ return NULL;
+}
+
+static Socket pty_socket(void *handle)
{
return NULL; /* shouldn't ever be needed */
}
-static int pty_sendok(void)
+static int pty_sendok(void *handle)
{
return 1;
}
-static void pty_unthrottle(int backlog)
+static void pty_unthrottle(void *handle, int backlog)
{
/* do nothing */
}
-static int pty_ldisc(int option)
+static int pty_ldisc(void *handle, int option)
{
return 0; /* neither editing nor echoing */
}
-static int pty_exitcode(void)
+static void pty_provide_ldisc(void *handle, void *ldisc)
+{
+ /* This is a stub. */
+}
+
+static void pty_provide_logctx(void *handle, void *logctx)
+{
+ /* This is a stub. */
+}
+
+static int pty_exitcode(void *handle)
+{
+ if (!pty_finished)
+ return -1; /* not dead yet */
+ else
+ return pty_exit_code;
+}
+
+static int pty_cfg_info(void *handle)
{
- /* Shouldn't ever be required */
return 0;
}
Backend pty_backend = {
pty_init,
+ pty_free,
+ pty_reconfig,
pty_send,
pty_sendbuffer,
pty_size,
pty_special,
+ pty_get_specials,
pty_socket,
pty_exitcode,
pty_sendok,
pty_ldisc,
+ pty_provide_ldisc,
+ pty_provide_logctx,
pty_unthrottle,
+ pty_cfg_info,
1
};
projects / u / mdw / putty / blobdiff