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@ -13,39 +13,37 @@ extern char *ptsname(int);
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#include "xinerama.h"
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#include "xinerama.h"
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#include <rfb/default8x16.h>
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#include <rfb/default8x16.h>
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/* much to do for it to work on *BSD ... */
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#if LIBVNCSERVER_HAVE_FORK
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#if LIBVNCSERVER_HAVE_FORK
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#if LIBVNCSERVER_HAVE_SETSID
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#if LIBVNCSERVER_HAVE_SYS_WAIT_H
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#if LIBVNCSERVER_HAVE_SYS_WAIT_H
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#if LIBVNCSERVER_HAVE_PWD_H
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#if LIBVNCSERVER_HAVE_SETUID
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#if LIBVNCSERVER_HAVE_WAITPID
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#if LIBVNCSERVER_HAVE_WAITPID
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#if LIBVNCSERVER_HAVE_TERMIOS_H
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#if LIBVNCSERVER_HAVE_SYS_IOCTL_H
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#if LIBVNCSERVER_HAVE_GRANTPT
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#define UNIXPW
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#define UNIXPW
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#include <sys/ioctl.h>
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#include <termios.h>
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif
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#if LIBVNCSERVER_HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#endif
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#if LIBVNCSERVER_HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#endif
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#if 0
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#include <sys/stropts.h>
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#endif
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#endif
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#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
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#define IS_BSD
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#endif
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#endif
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void unixpw_screen(int init);
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void unixpw_screen(int init);
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void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init);
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void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init);
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void unixpw_accept(void);
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void unixpw_accept(char *user);
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void unixpw_deny(void);
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void unixpw_deny(void);
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int su_verify(char *user, char *pass);
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static int white(void);
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static int white(void);
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static int text_x(void);
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static int text_x(void);
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static int text_y(void);
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static int text_y(void);
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static int su_verify(char *user, char *pass);
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static void set_db(void);
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static void unixpw_verify(char *user, char *pass);
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static void unixpw_verify(char *user, char *pass);
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int unixpw_in_progress = 0;
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int unixpw_in_progress = 0;
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@ -56,6 +54,8 @@ static int in_login = 0, in_passwd = 0, tries = 0;
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static int char_row = 0, char_col = 0;
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static int char_row = 0, char_col = 0;
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static int char_x = 0, char_y = 0, char_w = 8, char_h = 16;
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static int char_x = 0, char_y = 0, char_w = 8, char_h = 16;
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static int db = 0;
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static int white(void) {
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static int white(void) {
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static unsigned long black_pix = 0, white_pix = 1, set = 0;
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static unsigned long black_pix = 0, white_pix = 1, set = 0;
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@ -108,131 +108,468 @@ void unixpw_screen(int init) {
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mark_rect_as_modified(0, 0, dpy_x, dpy_y, 0);
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mark_rect_as_modified(0, 0, dpy_x, dpy_y, 0);
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}
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}
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static int su_verify(char *user, char *pass) {
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#ifdef UNIXPW
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#ifdef MAXPATHLEN
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int status, fd, sfd;
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static char slave_str[MAXPATHLEN];
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#else
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static char slave_str[4096];
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#endif
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char *get_pty_ptmx(int *fd_p) {
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char *slave;
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char *slave;
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pid_t pid, pidw;
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int fd = -1, i, ndevs = 4, tmp;
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struct stat sbuf;
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char *devs[] = {
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"/dev/ptmx",
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"/dev/ptm/clone",
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"/dev/ptc",
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"/dev/ptmx_bsd"
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};
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if (unixpw_list) {
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*fd_p = -1;
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char *p, *str = strdup(unixpw_list);
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int ok = 0;
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p = strtok(str, ",");
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#if LIBVNCSERVER_HAVE_GRANTPT
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while (p) {
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if (!strcmp(user, p)) {
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for (i=0; i < ndevs; i++) {
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ok = 1;
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#ifdef O_NOCTTY
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fd = open(devs[i], O_RDWR|O_NOCTTY);
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#else
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fd = open(devs[i], O_RDWR);
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#endif
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if (fd >= 0) {
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break;
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break;
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}
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}
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p = strtok(NULL, ",");
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}
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}
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free(str);
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if (! ok) {
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return 0;
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}
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}
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if (stat("/bin/su", &sbuf) != 0) {
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rfbLogPerror("existence /bin/su");
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return 0;
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}
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if (stat("/bin/true", &sbuf) != 0) {
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rfbLogPerror("existence /bin/true");
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return 0;
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}
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fd = open("/dev/ptmx", O_RDWR|O_NOCTTY);
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if (fd < 0) {
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if (fd < 0) {
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rfbLogPerror("open /dev/ptmx");
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rfbLogPerror("open /dev/ptmx");
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return 0;
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return NULL;
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}
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}
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#if 0
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#if defined(FIONBIO)
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tmp = 1;
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ioctl(fd, FIONBIO, &tmp);
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#endif
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#endif
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#if LIBVNCSERVER_HAVE_SYS_IOCTL_H && defined(TIOCPKT)
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tmp = 0;
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ioctl(fd, TIOCPKT, (char *) &tmp);
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#endif
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if (grantpt(fd) != 0) {
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if (grantpt(fd) != 0) {
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rfbLogPerror("grantpt");
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rfbLogPerror("grantpt");
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close(fd);
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close(fd);
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return 0;
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return NULL;
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}
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}
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if (unlockpt(fd) != 0) {
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if (unlockpt(fd) != 0) {
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rfbLogPerror("unlockpt");
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rfbLogPerror("unlockpt");
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close(fd);
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close(fd);
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return 0;
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return NULL;
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}
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}
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slave = ptsname(fd);
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slave = ptsname(fd);
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if (! slave) {
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if (! slave) {
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rfbLogPerror("ptsname");
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rfbLogPerror("ptsname");
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close(fd);
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close(fd);
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return 0;
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return NULL;
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}
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}
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pid = fork();
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#if LIBVNCSERVER_HAVE_SYS_IOCTL_H && defined(TIOCFLUSH)
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if (pid < 0) {
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ioctl(fd, TIOCFLUSH, (char *) 0);
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rfbLogPerror("fork");
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#endif
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close(fd);
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return 0;
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strcpy(slave_str, slave);
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*fd_p = fd;
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return slave_str;
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#else
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return NULL;
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#endif /* GRANTPT */
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}
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char *get_pty_loop(int *fd_p) {
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char *slave;
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char master_str[16];
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int fd = -1, i;
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char c;
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*fd_p = -1;
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/* for *BSD loop over /dev/ptyXY */
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for (c = 'p'; c <= 'z'; c++) {
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for (i=0; i < 16; i++) {
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sprintf(master_str, "/dev/pty%c%x", c, i);
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#ifdef O_NOCTTY
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fd = open(master_str, O_RDWR|O_NOCTTY);
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#else
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fd = open(master_str, O_RDWR);
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#endif
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if (fd >= 0) {
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break;
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}
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}
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if (fd >= 0) {
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break;
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}
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}
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if (fd < 0) {
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return NULL;
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}
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}
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if (pid == 0) {
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#if LIBVNCSERVER_HAVE_SYS_IOCTL_H && defined(TIOCFLUSH)
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int ttyfd;
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ioctl(fd, TIOCFLUSH, (char *) 0);
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struct passwd *pw;
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#endif
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close(fd);
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sprintf(slave_str, "/dev/tty%c%x", c, i);
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*fd_p = fd;
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return slave_str;
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}
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char *get_pty(int *fd_p) {
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if (getenv("BSD_PTY")) {
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return get_pty_loop(fd_p);
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}
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#ifdef IS_BSD
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return get_pty_loop(fd_p);
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#else
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#if LIBVNCSERVER_HAVE_GRANTPT
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return get_pty_ptmx(fd_p);
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#else
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return get_pty_loop(fd_p);
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#endif
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#endif
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}
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void try_to_be_nobody(void) {
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#if LIBVNCSERVER_HAVE_PWD_H
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struct passwd *pw;
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pw = getpwnam("nobody");
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pw = getpwnam("nobody");
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if (pw) {
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if (pw) {
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#if LIBVNCSERVER_HAVE_SETUID
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setuid(pw->pw_uid);
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setuid(pw->pw_uid);
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#endif
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#if LIBVNCSERVER_HAVE_SETEUID
|
|
|
|
#if LIBVNCSERVER_HAVE_SETEUID
|
|
|
|
seteuid(pw->pw_uid);
|
|
|
|
seteuid(pw->pw_uid);
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if LIBVNCSERVER_HAVE_SETGID
|
|
|
|
setgid(pw->pw_gid);
|
|
|
|
setgid(pw->pw_gid);
|
|
|
|
|
|
|
|
#endif
|
|
|
|
#if LIBVNCSERVER_HAVE_SETEGID
|
|
|
|
#if LIBVNCSERVER_HAVE_SETEGID
|
|
|
|
setegid(pw->pw_gid);
|
|
|
|
setegid(pw->pw_gid);
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (getuid() == 0 || geteuid() == 0) {
|
|
|
|
#endif /* PWD_H */
|
|
|
|
fprintf(stderr, "could not switch to user nobody.\n");
|
|
|
|
}
|
|
|
|
exit(1);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static int slave_fd = -1;
|
|
|
|
|
|
|
|
static void close_alarm (int sig) {
|
|
|
|
|
|
|
|
if (slave_fd >= 0) {
|
|
|
|
|
|
|
|
close(slave_fd);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
int su_verify(char *user, char *pass) {
|
|
|
|
|
|
|
|
#ifndef UNIXPW
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
int i, j, status, fd = -1, sfd, tfd;
|
|
|
|
|
|
|
|
char *slave, *bin_true = NULL, *bin_su = NULL;
|
|
|
|
|
|
|
|
pid_t pid, pidw;
|
|
|
|
|
|
|
|
struct stat sbuf;
|
|
|
|
|
|
|
|
static int first = 1;
|
|
|
|
|
|
|
|
char instr[16];
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (first) {
|
|
|
|
|
|
|
|
set_db();
|
|
|
|
|
|
|
|
first = 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (unixpw_list) {
|
|
|
|
|
|
|
|
char *p, *q, *str = strdup(unixpw_list);
|
|
|
|
|
|
|
|
int ok = 0;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
p = strtok(str, ",");
|
|
|
|
|
|
|
|
while (p) {
|
|
|
|
|
|
|
|
if ( (q = strchr(p, ':')) != NULL ) {
|
|
|
|
|
|
|
|
*q = '\0'; /* get rid of options. */
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!strcmp(user, p) || !strcmp("*", p)) {
|
|
|
|
|
|
|
|
ok = 1;
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
p = strtok(NULL, ",");
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
free(str);
|
|
|
|
|
|
|
|
if (! ok) {
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (stat("/bin/su", &sbuf) == 0) {
|
|
|
|
|
|
|
|
bin_su = "/bin/su";
|
|
|
|
|
|
|
|
} else if (stat("/usr/bin/su", &sbuf) == 0) {
|
|
|
|
|
|
|
|
bin_su = "/usr/bin/su";
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bin_su == NULL) {
|
|
|
|
|
|
|
|
rfbLogPerror("existence /bin/su");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (stat("/bin/true", &sbuf) == 0) {
|
|
|
|
|
|
|
|
bin_true = "/bin/true";
|
|
|
|
|
|
|
|
} if (stat("/usr/bin/true", &sbuf) == 0) {
|
|
|
|
|
|
|
|
bin_true = "/usr/bin/true";
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (bin_true == NULL) {
|
|
|
|
|
|
|
|
rfbLogPerror("existence /bin/true");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
slave = get_pty(&fd);
|
|
|
|
|
|
|
|
if (slave == NULL) {
|
|
|
|
|
|
|
|
rfbLogPerror("get_pty failed.");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (db) fprintf(stderr, "slave is: %s fd=%d\n", slave, fd);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (fd < 0) {
|
|
|
|
|
|
|
|
rfbLogPerror("get_pty fd < 0");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fcntl(fd, F_SETFD, 1);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
pid = fork();
|
|
|
|
|
|
|
|
if (pid < 0) {
|
|
|
|
|
|
|
|
rfbLogPerror("fork");
|
|
|
|
|
|
|
|
close(fd);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (pid == 0) {
|
|
|
|
|
|
|
|
int ttyfd;
|
|
|
|
|
|
|
|
char tmp[256];
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#if LIBVNCSERVER_HAVE_SETSID
|
|
|
|
if (setsid() == -1) {
|
|
|
|
if (setsid() == -1) {
|
|
|
|
perror("setsid");
|
|
|
|
perror("setsid");
|
|
|
|
exit(1);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
if (setpgrp() == -1) {
|
|
|
|
|
|
|
|
perror("setpgrp");
|
|
|
|
|
|
|
|
exit(1);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef TIOCNOTTY
|
|
|
|
#if LIBVNCSERVER_HAVE_SYS_IOCTL_H && defined(TIOCNOTTY)
|
|
|
|
ttyfd = open("/dev/tty", O_RDWR);
|
|
|
|
ttyfd = open("/dev/tty", O_RDWR);
|
|
|
|
if (ttyfd >= 0) {
|
|
|
|
if (ttyfd >= 0) {
|
|
|
|
(void) ioctl(ttyfd, TIOCNOTTY, (char *)0);
|
|
|
|
(void) ioctl(ttyfd, TIOCNOTTY, (char *) 0);
|
|
|
|
close(ttyfd);
|
|
|
|
close(ttyfd);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif /* SETSID */
|
|
|
|
|
|
|
|
|
|
|
|
close(0);
|
|
|
|
close(0);
|
|
|
|
close(1);
|
|
|
|
close(1);
|
|
|
|
close(2);
|
|
|
|
close(2);
|
|
|
|
|
|
|
|
|
|
|
|
sfd = open(slave, O_RDWR);
|
|
|
|
sfd = open(slave, O_RDWR);
|
|
|
|
if (sfd < 0) {
|
|
|
|
if (sfd < 0) {
|
|
|
|
fprintf(stderr, "failed: %s\n", slave);
|
|
|
|
|
|
|
|
perror("open");
|
|
|
|
|
|
|
|
exit(1);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef TIOCSCTTY
|
|
|
|
/* sfd should be 0 since we closed 0. */
|
|
|
|
if (ioctl(sfd, TIOCSCTTY, (char *) 0) != 0) {
|
|
|
|
|
|
|
|
perror("ioctl");
|
|
|
|
#ifdef F_SETFL
|
|
|
|
|
|
|
|
fcntl (sfd, F_SETFL, O_NONBLOCK);
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (fcntl(sfd, F_DUPFD, 1) == -1) {
|
|
|
|
|
|
|
|
exit(1);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fcntl(sfd, F_DUPFD, 2) == -1) {
|
|
|
|
exit(1);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
unlink("/tmp/isatty");
|
|
|
|
|
|
|
|
unlink("/tmp/isastream");
|
|
|
|
|
|
|
|
#if LIBVNCSERVER_HAVE_SYS_IOCTL_H
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
|
|
|
if (isastream(sfd)) {
|
|
|
|
|
|
|
|
tfd = open("/tmp/isastream", O_CREAT|O_WRONLY, 0600);
|
|
|
|
|
|
|
|
close(tfd);
|
|
|
|
|
|
|
|
ioctl(sfd, I_PUSH, "ptem");
|
|
|
|
|
|
|
|
ioctl(sfd, I_PUSH, "ldterm");
|
|
|
|
|
|
|
|
ioctl(sfd, I_PUSH, "ttcompat");
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if 1
|
|
|
|
|
|
|
|
#if defined(TIOCSCTTY) && !defined(sun) && !defined(hpux)
|
|
|
|
|
|
|
|
ioctl(sfd, TIOCSCTTY, (char *) 0);
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
execlp("/bin/su", "/bin/su", user, "-c", "/bin/true",
|
|
|
|
#endif
|
|
|
|
(char *) NULL);
|
|
|
|
if (isatty(sfd)) {
|
|
|
|
|
|
|
|
char nam[256];
|
|
|
|
|
|
|
|
tfd = open("/tmp/isatty", O_CREAT|O_WRONLY, 0600);
|
|
|
|
|
|
|
|
close(tfd);
|
|
|
|
|
|
|
|
sprintf(nam, "stty -a < %s > /tmp/isatty 2>&1", slave);
|
|
|
|
|
|
|
|
system(nam);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif /* SYS_IOCTL_H */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
chdir("/");
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
try_to_be_nobody();
|
|
|
|
|
|
|
|
#if LIBVNCSERVER_HAVE_GETUID
|
|
|
|
|
|
|
|
if (getuid() == 0 || geteuid() == 0) {
|
|
|
|
|
|
|
|
exit(1);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
exit(1);
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
set_env("LC_ALL", "C");
|
|
|
|
|
|
|
|
set_env("LANG", "C");
|
|
|
|
|
|
|
|
set_env("SHELL", "/bin/sh");
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
execlp(bin_su, bin_su, user, "-c", bin_true, (char *) NULL);
|
|
|
|
exit(1);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (db) fprintf(stderr, "pid: %d\n", pid);
|
|
|
|
|
|
|
|
if (db > 3) {
|
|
|
|
|
|
|
|
char cmd[32];
|
|
|
|
|
|
|
|
usleep( 100 * 1000 );
|
|
|
|
|
|
|
|
sprintf(cmd, "ps wu %d", pid);
|
|
|
|
|
|
|
|
system(cmd);
|
|
|
|
|
|
|
|
sprintf(cmd, "stty -a < %s", slave);
|
|
|
|
|
|
|
|
system(cmd);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
usleep( 500 * 1000 );
|
|
|
|
usleep( 500 * 1000 );
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* send the password "early" (i.e. before we drain) */
|
|
|
|
|
|
|
|
if (0) {
|
|
|
|
|
|
|
|
int k;
|
|
|
|
|
|
|
|
for (k = 0; k < strlen(pass); k++) {
|
|
|
|
|
|
|
|
write(fd, pass+k, 1);
|
|
|
|
|
|
|
|
usleep(100 * 1000);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
} else {
|
|
|
|
write(fd, pass, strlen(pass));
|
|
|
|
write(fd, pass, strlen(pass));
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
|
|
|
* set an alarm for blocking read() to close the master
|
|
|
|
|
|
|
|
* (presumably terminating the child. we avoid SIGTERM for now)
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
slave_fd = fd;
|
|
|
|
|
|
|
|
signal(SIGALRM, close_alarm);
|
|
|
|
|
|
|
|
alarm(10);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
|
|
|
* In addition to checking exit code below, we watch for the
|
|
|
|
|
|
|
|
* appearance of the string "Password:". BSD does not seem to
|
|
|
|
|
|
|
|
* ask for a password trying to su to yourself.
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
for (i=0; i<16; i++) {
|
|
|
|
|
|
|
|
instr[i] = '\0';
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
j = 0;
|
|
|
|
|
|
|
|
for (i=0; i < strlen("Password:"); i++) {
|
|
|
|
|
|
|
|
char pstr[] = "password:";
|
|
|
|
|
|
|
|
char buf[2];
|
|
|
|
|
|
|
|
int n;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
buf[0] = '\0';
|
|
|
|
|
|
|
|
buf[1] = '\0';
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
n = read(fd, buf, 1);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (db == 1) fprintf(stderr, "%d ", n, db > 1 ? buf : "");
|
|
|
|
|
|
|
|
if (db > 1) fprintf(stderr, "%s", buf);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (db > 3 && n == 1 && buf[0] == ':') {
|
|
|
|
|
|
|
|
char cmd[32];
|
|
|
|
|
|
|
|
usleep( 100 * 1000 );
|
|
|
|
|
|
|
|
sprintf(cmd, "ps wu %d", pid);
|
|
|
|
|
|
|
|
system(cmd);
|
|
|
|
|
|
|
|
sprintf(cmd, "stty -a < %s", slave);
|
|
|
|
|
|
|
|
system(cmd);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (n == 1) {
|
|
|
|
|
|
|
|
if (isspace(buf[0])) {
|
|
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
instr[j++] = tolower(buf[0]);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (n <= 0 || strstr(pstr, instr) != pstr) {
|
|
|
|
|
|
|
|
rfbLog("\"Password:\" did not appear: '%s' n=%d\n",
|
|
|
|
|
|
|
|
instr, n);
|
|
|
|
|
|
|
|
if (db > 3 && n == 1) {
|
|
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
alarm(0);
|
|
|
|
|
|
|
|
signal(SIGALRM, SIG_DFL);
|
|
|
|
|
|
|
|
slave_fd = -1;
|
|
|
|
|
|
|
|
close(fd);
|
|
|
|
|
|
|
|
kill(pid, SIGTERM);
|
|
|
|
|
|
|
|
waitpid(pid, &status, WNOHANG);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
alarm(0);
|
|
|
|
|
|
|
|
signal(SIGALRM, SIG_DFL);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
usleep( 250 * 1000 );
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
|
|
|
tcdrain(fd);
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
signal(SIGALRM, close_alarm);
|
|
|
|
|
|
|
|
alarm(15);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
|
|
|
* try to drain the output, hopefully never as much as 4096 (motd?)
|
|
|
|
|
|
|
|
* if we don't drain we may block at waitpid. If we close(fd), the
|
|
|
|
|
|
|
|
* make cause child to die by signal.
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
for (i = 0; i<4096; i++) {
|
|
|
|
|
|
|
|
char buf[2];
|
|
|
|
|
|
|
|
int n;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
buf[0] = '\0';
|
|
|
|
|
|
|
|
buf[1] = '\0';
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
n = read(fd, buf, 1);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (db == 1) fprintf(stderr, "%d ", n, db > 1 ? buf : "");
|
|
|
|
|
|
|
|
if (db > 1) fprintf(stderr, "%s", buf);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (n <= 0) {
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (db) fprintf(stderr, "\n");
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
alarm(0);
|
|
|
|
|
|
|
|
signal(SIGALRM, SIG_DFL);
|
|
|
|
|
|
|
|
slave_fd = -1;
|
|
|
|
|
|
|
|
|
|
|
|
pidw = waitpid(pid, &status, 0);
|
|
|
|
pidw = waitpid(pid, &status, 0);
|
|
|
|
close(fd);
|
|
|
|
close(fd);
|
|
|
|
@ -241,26 +578,23 @@ static int su_verify(char *user, char *pass) {
|
|
|
|
return 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
|
|
|
|
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
|
|
|
|
return 1;
|
|
|
|
return 1; /* this is the only return of success. */
|
|
|
|
} else {
|
|
|
|
} else {
|
|
|
|
return 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
#endif /* UNIXPW */
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int db = 0;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void unixpw_verify(char *user, char *pass) {
|
|
|
|
static void unixpw_verify(char *user, char *pass) {
|
|
|
|
int x, y;
|
|
|
|
int x, y;
|
|
|
|
char li[] = "Login incorrect";
|
|
|
|
char li[] = "Login incorrect";
|
|
|
|
char log[] = "login: ";
|
|
|
|
char log[] = "login: ";
|
|
|
|
|
|
|
|
|
|
|
|
if (db) fprintf(stderr, "unixpw_verify: '%s' '%s'\n", user, db > 1 ? pass : "********");
|
|
|
|
if (db) fprintf(stderr, "unixpw_verify: '%s' '%s'\n", user, db > 1 ? pass : "********");
|
|
|
|
|
|
|
|
rfbLog("unixpw_verify: %s\n", user);
|
|
|
|
|
|
|
|
|
|
|
|
if (su_verify(user, pass)) {
|
|
|
|
if (su_verify(user, pass)) {
|
|
|
|
unixpw_accept();
|
|
|
|
unixpw_accept(user);
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
@ -290,16 +624,20 @@ if (db) fprintf(stderr, "unixpw_verify: '%s' '%s'\n", user, db > 1 ? pass : "***
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void set_db(void) {
|
|
|
|
|
|
|
|
if (getenv("DEBUG_UNIXPW")) {
|
|
|
|
|
|
|
|
db = atoi(getenv("DEBUG_UNIXPW"));
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init) {
|
|
|
|
void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init) {
|
|
|
|
int x, y, i, nmax = 100;
|
|
|
|
int x, y, i, nmax = 100;
|
|
|
|
static char user[100], pass[100];
|
|
|
|
static char user[100], pass[100];
|
|
|
|
static int u_cnt = 0, p_cnt = 0, first = 1;
|
|
|
|
static int u_cnt = 0, p_cnt = 0, first = 1;
|
|
|
|
char str[100];
|
|
|
|
char keystr[100];
|
|
|
|
|
|
|
|
|
|
|
|
if (first) {
|
|
|
|
if (first) {
|
|
|
|
if (getenv("DEBUG_UNIXPW")) {
|
|
|
|
set_db();
|
|
|
|
db = atoi(getenv("DEBUG_UNIXPW"));
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
first = 0;
|
|
|
|
first = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
@ -319,7 +657,18 @@ void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init) {
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (down) {
|
|
|
|
X_LOCK;
|
|
|
|
|
|
|
|
sprintf(keystr, "%s", XKeysymToString(keysym));
|
|
|
|
|
|
|
|
X_UNLOCK;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (db > 2) {
|
|
|
|
|
|
|
|
fprintf(stderr, "%s / %s 0x%x %s\n", in_login ? "login":"pass ",
|
|
|
|
|
|
|
|
down ? "down":"up ", keysym, keystr);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (keysym == XK_Return || keysym == XK_Linefeed) {
|
|
|
|
|
|
|
|
; /* let "up" pass down below for Return case */
|
|
|
|
|
|
|
|
} else if (! down) {
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
@ -340,6 +689,14 @@ void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init) {
|
|
|
|
if (keysym == XK_Return || keysym == XK_Linefeed) {
|
|
|
|
if (keysym == XK_Return || keysym == XK_Linefeed) {
|
|
|
|
char pw[] = "Password: ";
|
|
|
|
char pw[] = "Password: ";
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (down) {
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
|
|
|
* require Up so the Return Up is not processed
|
|
|
|
|
|
|
|
* by the normal session after login.
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
in_login = 0;
|
|
|
|
in_login = 0;
|
|
|
|
in_passwd = 1;
|
|
|
|
in_passwd = 1;
|
|
|
|
|
|
|
|
|
|
|
|
@ -360,23 +717,23 @@ void unixpw_keystroke(rfbBool down, rfbKeySym keysym, int init) {
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (u_cnt >= nmax - 1) {
|
|
|
|
if (u_cnt >= nmax - 1) {
|
|
|
|
rfbLog("unixpw_deny: username too long\n");
|
|
|
|
rfbLog("unixpw_deny: username too long\n");
|
|
|
|
|
|
|
|
for (i=0; i<nmax; i++) {
|
|
|
|
|
|
|
|
user[i] = '\0';
|
|
|
|
|
|
|
|
pass[i] = '\0';
|
|
|
|
|
|
|
|
}
|
|
|
|
unixpw_deny();
|
|
|
|
unixpw_deny();
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
X_LOCK;
|
|
|
|
user[u_cnt++] = keystr[0];
|
|
|
|
sprintf(str, "%s", XKeysymToString(keysym));
|
|
|
|
|
|
|
|
X_UNLOCK;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
user[u_cnt++] = str[0];
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
x = text_x();
|
|
|
|
x = text_x();
|
|
|
|
y = text_y();
|
|
|
|
y = text_y();
|
|
|
|
|
|
|
|
|
|
|
|
if (db) fprintf(stderr, "u_cnt: %d %d/%d ks: 0x%x %s\n", u_cnt, x, y, keysym, str);
|
|
|
|
if (db && db <= 2) fprintf(stderr, "u_cnt: %d %d/%d ks: 0x%x %s\n", u_cnt, x, y, keysym, keystr);
|
|
|
|
|
|
|
|
|
|
|
|
str[1] = '\0';
|
|
|
|
keystr[1] = '\0';
|
|
|
|
rfbDrawString(screen, &default8x16Font, x, y, str, white());
|
|
|
|
rfbDrawString(screen, &default8x16Font, x, y, keystr, white());
|
|
|
|
|
|
|
|
|
|
|
|
mark_rect_as_modified(x, y-char_h, x+char_w, y, 0);
|
|
|
|
mark_rect_as_modified(x, y-char_h, x+char_w, y, 0);
|
|
|
|
char_col++;
|
|
|
|
char_col++;
|
|
|
|
@ -390,10 +747,21 @@ if (db) fprintf(stderr, "u_cnt: %d %d/%d ks: 0x%x %s\n", u_cnt, x, y, keysym, s
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (keysym == XK_Return || keysym == XK_Linefeed) {
|
|
|
|
if (keysym == XK_Return || keysym == XK_Linefeed) {
|
|
|
|
|
|
|
|
if (down) {
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
|
|
|
* require Up so the Return Up is not processed
|
|
|
|
|
|
|
|
* by the normal session after login.
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
}
|
|
|
|
in_login = 0;
|
|
|
|
in_login = 0;
|
|
|
|
in_passwd = 0;
|
|
|
|
in_passwd = 0;
|
|
|
|
pass[p_cnt++] = '\n';
|
|
|
|
pass[p_cnt++] = '\n';
|
|
|
|
unixpw_verify(user, pass);
|
|
|
|
unixpw_verify(user, pass);
|
|
|
|
|
|
|
|
for (i=0; i<nmax; i++) {
|
|
|
|
|
|
|
|
user[i] = '\0';
|
|
|
|
|
|
|
|
pass[i] = '\0';
|
|
|
|
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (keysym <= ' ' || keysym >= 0x7f) {
|
|
|
|
if (keysym <= ' ' || keysym >= 0x7f) {
|
|
|
|
@ -401,14 +769,86 @@ if (db) fprintf(stderr, "u_cnt: %d %d/%d ks: 0x%x %s\n", u_cnt, x, y, keysym, s
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (p_cnt >= nmax - 2) {
|
|
|
|
if (p_cnt >= nmax - 2) {
|
|
|
|
rfbLog("unixpw_deny: password too long\n");
|
|
|
|
rfbLog("unixpw_deny: password too long\n");
|
|
|
|
|
|
|
|
for (i=0; i<nmax; i++) {
|
|
|
|
|
|
|
|
user[i] = '\0';
|
|
|
|
|
|
|
|
pass[i] = '\0';
|
|
|
|
|
|
|
|
}
|
|
|
|
unixpw_deny();
|
|
|
|
unixpw_deny();
|
|
|
|
return;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pass[p_cnt++] = (char) keysym;
|
|
|
|
pass[p_cnt++] = (char) keysym;
|
|
|
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} else {
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/* should not happen... clean up a bit. */
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u_cnt = 0;
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p_cnt = 0;
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for (i=0; i<nmax; i++) {
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user[i] = '\0';
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pass[i] = '\0';
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}
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}
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}
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static void apply_opts (char *user) {
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char *p, *q, *str, *opts = NULL, *opts_star = NULL;
|
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ClientData *cd = (ClientData *) unixpw_client->clientData;
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rfbClientPtr cl = unixpw_client;
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int i;
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|
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if (! unixpw_list) {
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|
|
return;
|
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|
}
|
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|
|
str = strdup(unixpw_list);
|
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/* apply any per-user options. */
|
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p = strtok(str, ",");
|
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|
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while (p) {
|
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|
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|
|
if ( (q = strchr(p, ':')) != NULL ) {
|
|
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|
|
*q = '\0'; /* get rid of options. */
|
|
|
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|
|
} else {
|
|
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|
|
p = strtok(NULL, ",");
|
|
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|
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|
|
continue;
|
|
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|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!strcmp(user, p)) {
|
|
|
|
|
|
|
|
opts = strdup(q+1);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!strcmp("*", p)) {
|
|
|
|
|
|
|
|
opts_star = strdup(q+1);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
p = strtok(NULL, ",");
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
free(str);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
for (i=0; i < 2; i++) {
|
|
|
|
|
|
|
|
char *s = (i == 0) ? opts_star : opts;
|
|
|
|
|
|
|
|
if (s == NULL) {
|
|
|
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
p = strtok(s, "+");
|
|
|
|
|
|
|
|
while (p) {
|
|
|
|
|
|
|
|
if (!strcmp(p, "viewonly")) {
|
|
|
|
|
|
|
|
cl->viewOnly = TRUE;
|
|
|
|
|
|
|
|
strncpy(cd->input, "-", CILEN);
|
|
|
|
|
|
|
|
} else if (!strcmp(p, "fullaccess")) {
|
|
|
|
|
|
|
|
cl->viewOnly = FALSE;
|
|
|
|
|
|
|
|
strncpy(cd->input, "-", CILEN);
|
|
|
|
|
|
|
|
} else if ((q = strstr(p, "input=")) == p) {
|
|
|
|
|
|
|
|
q += strlen("input=");
|
|
|
|
|
|
|
|
strncpy(cd->input, q, CILEN);
|
|
|
|
|
|
|
|
} else if (!strcmp(p, "deny")) {
|
|
|
|
|
|
|
|
cl->viewOnly = TRUE;
|
|
|
|
|
|
|
|
unixpw_deny();
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
p = strtok(NULL, "+");
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
free(s);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void unixpw_accept(void) {
|
|
|
|
void unixpw_accept(char *user) {
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
apply_opts(user);
|
|
|
|
|
|
|
|
|
|
|
|
unixpw_in_progress = 0;
|
|
|
|
unixpw_in_progress = 0;
|
|
|
|
unixpw_client = NULL;
|
|
|
|
unixpw_client = NULL;
|
|
|
|
mark_rect_as_modified(0, 0, dpy_x, dpy_y, 0);
|
|
|
|
mark_rect_as_modified(0, 0, dpy_x, dpy_y, 0);
|
|
|
|
|
runge
19 years ago