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Diffstat (limited to 'socket.c')
-rw-r--r--socket.c541
1 files changed, 289 insertions, 252 deletions
diff --git a/socket.c b/socket.c
index 0b93cb1..ad133a7 100644
--- a/socket.c
+++ b/socket.c
@@ -39,7 +39,7 @@ RCS_ID("$Id: socket.c,v 1.23 1994/05/31 12:33:00 mlschroe Exp $ FAU")
#include "screen.h"
-#ifdef DIRENT
+#ifdef HAVE_DIRENT_H
# include <dirent.h>
#else
# include <sys/dir.h>
@@ -54,6 +54,8 @@ static void ExecCreate __P((struct msg *));
# define connect sconnect /* _SEQUENT_ has braindamaged connect */
static int sconnect __P((int, struct sockaddr *, int));
#endif
+static void FinishAttach __P((struct msg *));
+static void AskPassword __P((struct msg *));
extern char *RcFileName, *extra_incap, *extra_outcap;
@@ -63,20 +65,14 @@ extern char *attach_tty, *LoginName, HostName[];
extern struct display *display, *displays;
extern struct win *fore, *wtab[], *console_window, *windows;
extern struct NewWindow nwin_undef;
-#ifdef NETHACK
-extern nethackflag;
-#endif
#ifdef MULTIUSER
extern char *multi;
#endif
-#ifdef PASSWORD
-extern int CheckPassword;
-extern char Password[];
-#endif
extern char *getenv();
extern char SockPath[];
+extern struct event serv_read;
#ifdef MULTIUSER
# define SOCKMODE (S_IWRITE | S_IREAD | (displays ? S_IEXEC : 0) | (multi ? 1 : 0))
@@ -89,18 +85,20 @@ extern char SockPath[];
* Socket directory manager
*
* fdp: pointer to store the first good socket.
- * nfoundp: pointer to store the number of sockets found.
+ * nfoundp: pointer to store the number of sockets found matching.
+ * notherp: pointer to store the number of sockets not matching.
* match: string to match socket name.
*
* The socket directory must be in SockPath!
- * The global variables LoginName, multi, rflag, xflag, dflag, quietflag,
- * nethackflag, SockPath are used.
- *
+ * The global variables LoginName, multi, rflag, xflag, dflag,
+ * quietflag, SockPath are used.
+ *
* The first good socket is stored in fdp and its name is
* appended to SockPath.
* If none exists or fdp is NULL SockPath is not changed.
*
* Returns: number of good sockets.
+ *
*/
int
@@ -117,7 +115,7 @@ char *match;
int matchlen = 0;
char *name, *n;
int firsts = -1, sockfd;
- char *firstn = 0;
+ char *firstn = NULL;
int nfound = 0, ngood = 0, ndead = 0, nwipe = 0, npriv = 0;
struct sent
{
@@ -148,7 +146,7 @@ char *match;
#endif
if ((dirp = opendir(SockPath)) == 0)
- Panic(errno, "Cannot opendir %s\n", SockPath);
+ Panic(errno, "Cannot opendir %s", SockPath);
slist = 0;
slisttail = &slist;
@@ -161,7 +159,7 @@ char *match;
if (matchlen)
{
n = name;
- /* if we don't want to match digits swip them */
+ /* if we don't want to match digits. Skip them */
if ((*match <= '0' || *match > '9') && (*n > '0' && *n <= '9'))
{
while (*n >= '0' && *n <= '9')
@@ -180,10 +178,10 @@ char *match;
debug1("stat %s\n", SockPath);
errno = 0;
- debug2("uid = %d, gid = %d\n", (int)getuid(), (int)getgid());
- debug2("euid = %d, egid = %d\n", (int)geteuid(), (int)getegid());
+ debug2("uid = %d, gid = %d\n", getuid(), getgid());
+ debug2("euid = %d, egid = %d\n", geteuid(), getegid());
if (stat(SockPath, &st))
- {
+ {
debug1("errno = %d\n", errno);
continue;
}
@@ -191,23 +189,25 @@ char *match;
#ifndef SOCK_NOT_IN_FS
# ifdef NAMEDPIPE
# ifdef S_ISFIFO
+ debug("S_ISFIFO?\n");
if (!S_ISFIFO(st.st_mode))
continue;
# endif
# else
# ifdef S_ISSOCK
+ debug("S_ISSOCK?\n");
if (!S_ISSOCK(st.st_mode))
continue;
# endif
# endif
#endif
- debug2("st.st_uid = %d, real_uid = %d\n", (int)st.st_uid, real_uid);
+ debug2("st.st_uid = %d, real_uid = %d\n", st.st_uid, real_uid);
if (st.st_uid != real_uid)
continue;
- mode = st.st_mode & 0777;
+ mode = (int)st.st_mode & 0777;
debug1(" has mode 0%03o\n", mode);
-#ifdef MULTIUSER
+#ifdef MULTIUSER
if (multi && ((mode & 0677) != 0601))
{
debug(" is not a MULTI-USER session");
@@ -240,7 +240,7 @@ char *match;
if (sockfd == -1)
{
debug2(" MakeClientSocket failed, unreachable? %d %d\n",
- matchlen, wipeflag);
+ matchlen, wipeflag);
sent->mode = -3;
/* Unreachable - it is dead if we detect that it's local
* or we specified a match
@@ -261,7 +261,7 @@ char *match;
}
}
}
- npriv++;
+ npriv++; /* a good socket that was not for us */
continue;
}
@@ -275,13 +275,13 @@ char *match;
* mode 700: socket is attached.
* xflag implies rflag here.
*
- * fail, when socket mode is not 600 or 700
+ * fail, when socket mode mode is not 600 or 700
* fail, when we want to detach w/o reattach, but it already is detached.
* fail, when we only want to attach, but mode 700 and not xflag.
* fail, if none of dflag, rflag, xflag is set.
*/
if ((mode != 0700 && mode != 0600) ||
- (dflag && !rflag && mode == 0600) ||
+ (dflag && !rflag && !xflag && mode == 0600) ||
(!dflag && rflag && mode == 0700 && !xflag) ||
(!dflag && !rflag && !xflag))
{
@@ -295,13 +295,13 @@ char *match;
{
firsts = sockfd;
firstn = sent->name;
- debug(" taken\n");
+ debug(" taken.\n");
}
else
{
debug(" discarded.\n");
close(sockfd);
- }
+ }
}
(void)closedir(dirp);
if (nfound && (lsflag || ngood != 1) && !quietflag)
@@ -309,28 +309,14 @@ char *match;
switch(ngood)
{
case 0:
-#ifdef NETHACK
- if (nethackflag)
- printf(lsflag ? "Your inventory:\n" : "Nothing fitting exists in the game:\n");
- else
-#endif
- printf(nfound > 1 ? "There are screens on:\n" : "There is a screen on:\n");
+ Msg(0, nfound > 1 ? "There are screens on:" : "There is a screen on:");
break;
case 1:
-#ifdef NETHACK
- if (nethackflag)
- printf(nfound > 1 ? "Prove thyself worthy or perish:\n" : "You see here a good looking screen:\n");
- else
-#endif
- printf(nfound > 1 ? "There are several screens on:\n" : "There is a possible screen on:\n");
+ Msg(0, nfound > 1 ? "There are several screens on:" : "There is a suitable screen on:");
break;
default:
-#ifdef NETHACK
- if (nethackflag)
- printf("You may wish for a screen, what do you want?\n");
- else
-#endif
- printf("There are several screens on:\n");
+ Msg(0, "There are several suitable screens on:");
+ break;
}
for (sent = slist; sent; sent = sent->next)
{
@@ -359,6 +345,7 @@ char *match;
break;
case -3:
printf("\t%s\t(Remote or dead)\n", sent->name);
+ break;
case -4:
printf("\t%s\t(Private)\n", sent->name);
break;
@@ -368,25 +355,9 @@ char *match;
if (ndead && !quietflag)
{
if (wipeflag)
- {
-#ifdef NETHACK
- if (nethackflag)
- printf("You hear%s distant explosion%s.\n",
- ndead > 1 ? "" : " a", ndead > 1 ? "s" : "");
- else
-#endif
- printf("%d socket%s wiped out.\n", nwipe, ndead > 1 ? "s" : "");
- }
+ Msg(0, "%d socket%s wiped out.", nwipe, nwipe > 1 ? "s" : "");
else
- {
-#ifdef NETHACK
- if (nethackflag)
- printf("The dead screen%s touch%s you. Try 'screen -wipe'.\n",
- ndead > 1 ? "s" : "", ndead > 1 ? "" : "es");
- else
-#endif
- printf("Remove dead screens with 'screen -wipe'.\n");
- }
+ Msg(0, "Remove dead screens with 'screen -wipe'.", ndead > 1 ? "s" : "", ndead > 1 ? "" : "es"); /* other args for nethack */
}
if (firsts != -1)
{
@@ -677,87 +648,34 @@ struct NewWindow *nwin;
if (nwin->term != nwin_undef.term)
strncpy(m.m.create.screenterm, nwin->term, 19);
m.m.create.screenterm[19] = '\0';
+ m.protocol_revision = MSG_REVISION;
debug1("SendCreateMsg writing '%s'\n", m.m.create.line);
if (write(s, (char *) &m, sizeof m) != sizeof m)
Msg(errno, "write");
close(s);
}
-void
-#ifdef USEVARARGS
-/*VARARGS1*/
-# if defined(__STDC__)
-SendErrorMsg(char *fmt, ...)
-# else /* __STDC__ */
-SendErrorMsg(fmt, va_alist)
-char *fmt;
-va_dcl
-# endif /* __STDC__ */
-{ /* } */
- static va_list ap;
-#else /* USEVARARGS */
-/*VARARGS1*/
-SendErrorMsg(fmt, p1, p2, p3, p4, p5, p6)
-char *fmt;
-unsigned long p1, p2, p3, p4, p5, p6;
+int
+SendErrorMsg(tty, buf)
+char *tty, *buf;
{
-#endif /* USEVARARGS */
- register int s;
+ int s;
struct msg m;
-#ifdef USEVARARGS
-# if defined(__STDC__)
- va_start(ap, fmt);
-# else /* __STDC__ */
- va_start(ap);
-# endif /* __STDC__ */
- (void) vsnprintf(m.m.message, sizeof(m.m.message), fmt, ap);
- va_end(ap);
-#else /* USEVARARGS */
- xsnprintf(m.m.message, sizeof(m.m.message), fmt, p1, p2, p3, p4, p5, p6);
-#endif /* USEVARARGS */
- debug1("SendErrorMsg: '%s'\n", m.m.message);
- if (display == 0)
- return;
+ strncpy(m.m.message, buf, sizeof(m.m.message) - 1);
+ m.m.message[sizeof(m.m.message) - 1] = 0;
s = MakeClientSocket(0);
+ if (s < 0)
+ return -1;
m.type = MSG_ERROR;
- strncpy(m.m_tty, D_usertty, sizeof(m.m_tty) - 1);
+ strncpy(m.m_tty, tty, sizeof(m.m_tty) - 1);
m.m_tty[sizeof(m.m_tty) - 1] = 0;
+ m.protocol_revision = MSG_REVISION;
debug1("SendErrorMsg(): writing to '%s'\n", SockPath);
(void) write(s, (char *) &m, sizeof m);
close(s);
- sleep(2);
-}
-
-
-#ifdef PASSWORD
-static int
-CheckPasswd(pwd, pid, utty)
-int pid;
-char *pwd, *utty;
-{
- if (CheckPassword && *Password &&
- strncmp(crypt(pwd, (strlen(Password) > 1) ? Password : "JW"), Password, strlen(Password)))
- {
- if (*pwd)
- {
-# ifdef NETHACK
- if (nethackflag)
- Msg(0, "'%s' tries to explode in the sky, but fails.", utty);
- else
-# endif /* NETHACK */
- Msg(0, "Illegal reattach attempt from terminal %s.", utty);
- }
- debug1("CheckPass() wrong password kill(%d, SIG_PW_FAIL)\n", pid);
- Kill(pid, SIG_PW_FAIL);
- return 0;
- }
- debug1("CheckPass() from %d happy\n", pid);
- Kill(pid, SIG_PW_OK);
- return 1;
+ return 0;
}
-#endif /* PASSWORD */
-
static void
ExecCreate(mp)
@@ -865,6 +783,7 @@ ReceiveMsg()
#ifdef REMOTE_DETACH
struct display *next;
#endif
+ struct display *olddisplays = displays;
#ifdef NAMEDPIPE
debug("Ha, there was someone knocking on my fifo??\n");
@@ -901,6 +820,9 @@ ReceiveMsg()
close(ServerSocket);
if ((ServerSocket = secopen(SockPath, O_RDONLY | O_NONBLOCK, 0)) < 0)
Panic(errno, "reopen fifo %s", SockPath);
+ evdeq(&serv_read);
+ serv_read.fd = ServerSocket;
+ evenq(&serv_read);
# endif
#else
close(ns);
@@ -919,6 +841,12 @@ ReceiveMsg()
debug("No data on socket.\n");
return;
}
+ if (m.protocol_revision != MSG_REVISION)
+ {
+ Msg(0, "Invalid message (magic 0x%08x).", m.protocol_revision);
+ return;
+ }
+
debug2("*** RecMsg: type %d tty %s\n", m.type, m.m_tty);
for (display = displays; display; display = display->d_next)
if (TTYCMP(D_usertty, m.m_tty) == 0)
@@ -930,7 +858,8 @@ ReceiveMsg()
for (wi = windows; wi; wi = wi->w_next)
if (!TTYCMP(m.m_tty, wi->w_tty))
{
- display = wi->w_display;
+ /* XXX: hmmm, rework this? */
+ display = wi->w_layer.l_cvlist ? wi->w_layer.l_cvlist->c_display : 0;
debug2("but window %s %sfound.\n", m.m_tty, display ? "" :
"(backfacing)");
break;
@@ -941,6 +870,9 @@ ReceiveMsg()
if (display && D_status)
RemoveStatus();
+ if (display && !D_tcinited && m.type != MSG_HANGUP)
+ return; /* ignore messages for bad displays */
+
switch (m.type)
{
case MSG_WINCH:
@@ -964,6 +896,7 @@ ReceiveMsg()
break; /* Intruder Alert */
debug2("RecMsg: apid=%d,was %d\n", m.m.attach.apid, display ? D_userpid : 0);
/* FALLTHROUGH */
+
case MSG_ATTACH:
if (CheckPid(m.m.attach.apid))
{
@@ -976,19 +909,14 @@ ReceiveMsg()
Kill(m.m.attach.apid, SIG_BYE);
break;
}
-#ifdef PASSWORD
- if (!CheckPasswd(m.m.attach.password, m.m.attach.apid, m.m_tty))
- {
- debug3("RcvMsg:Checkpass(%s,%d,%s) failed\n",
- m.m.attach.password, m.m.attach.apid, m.m_tty);
- close(i);
- break;
- }
-#else
# ifdef MULTIUSER
Kill(m.m.attach.apid, SIGCONT);
# endif
-#endif /* PASSWORD */
+
+#if defined(ultrix) || defined(pyr) || defined(NeXT)
+ brktty(i); /* for some strange reason this must be done */
+#endif
+
if (display || wi)
{
write(i, "Attaching from inside of screen?\n", 33);
@@ -1011,19 +939,6 @@ ReceiveMsg()
#endif
debug2("RecMsg: apid %d is o.k. and we just opened '%s'\n", m.m.attach.apid, m.m_tty);
- /* turn off iflag on a multi-attach... */
- if (iflag && displays)
- {
- iflag = 0;
- display = displays;
-#if defined(TERMIO) || defined(POSIX)
- D_NewMode.tio.c_cc[VINTR] = VDISABLE;
- D_NewMode.tio.c_lflag &= ~ISIG;
-#else /* TERMIO || POSIX */
- D_NewMode.m_tchars.t_intrc = -1;
-#endif /* TERMIO || POSIX */
- SetTTY(D_userfd, &D_NewMode);
- }
/* create new display */
GetTTY(i, &Mode);
@@ -1035,110 +950,29 @@ ReceiveMsg()
Kill(m.m.attach.apid, SIG_BYE);
break;
}
-#if defined(ultrix) || defined(pyr) || defined(NeXT)
- brktty(D_userfd); /* for some strange reason this must be done */
-#endif
-#if defined(pyr) || defined(xelos) || defined(sequent)
- /*
- * Kludge for systems with braindamaged termcap routines,
- * which evaluate $TERMCAP, regardless weather it describes
- * the correct terminal type or not.
- */
- debug("unsetenv(TERMCAP) in case of a different terminal");
- unsetenv("TERMCAP");
-#endif
-
- /*
- * We reboot our Terminal Emulator. Forget all we knew about
- * the old terminal, reread the termcap entries in .screenrc
- * (and nothing more from .screenrc is read. Mainly because
- * I did not check, weather a full reinit is save. jw)
- * and /etc/screenrc, and initialise anew.
- */
- if (extra_outcap)
- free(extra_outcap);
- if (extra_incap)
- free(extra_incap);
- extra_incap = extra_outcap = 0;
- debug2("Message says size (%dx%d)\n", m.m.attach.columns, m.m.attach.lines);
-#ifdef ETCSCREENRC
-# ifdef ALLOW_SYSSCREENRC
- if ((p = getenv("SYSSCREENRC")))
- StartRc(p);
- else
-# endif
- StartRc(ETCSCREENRC);
-#endif
- StartRc(RcFileName);
- if (InitTermcap(m.m.attach.columns, m.m.attach.lines))
+ /* turn off iflag on a multi-attach... */
+ if (iflag && olddisplays)
{
- FreeDisplay();
- Kill(m.m.attach.apid, SIG_BYE);
- break;
+ iflag = 0;
+#if defined(TERMIO) || defined(POSIX)
+ olddisplays->d_NewMode.tio.c_cc[VINTR] = VDISABLE;
+ olddisplays->d_NewMode.tio.c_lflag &= ~ISIG;
+#else /* TERMIO || POSIX */
+ olddisplays->d_NewMode.m_tchars.t_intrc = -1;
+#endif /* TERMIO || POSIX */
+ SetTTY(olddisplays->d_userfd, &olddisplays->d_NewMode);
}
- InitTerm(m.m.attach.adaptflag);
- if (displays->d_next == 0)
- (void) chsock();
- signal(SIGHUP, SigHup);
-#ifdef UTMPOK
- /*
- * we set the Utmp slots again, if we were detached normally
- * and if we were detached by ^Z.
- */
- RemoveLoginSlot();
- if (displays->d_next == 0)
- for (wi = windows; wi; wi = wi->w_next)
- if (wi->w_ptyfd >= 0 && wi->w_slot != (slot_t) -1)
- SetUtmp(wi);
-#endif
- SetMode(&D_OldMode, &D_NewMode);
+ SetMode(&D_OldMode, &D_NewMode, D_flow, iflag);
SetTTY(D_userfd, &D_NewMode);
+ if (fcntl(D_userfd, F_SETFL, FNBLOCK))
+ Msg(errno, "Warning: NBLOCK fcntl failed");
- D_fore = NULL;
- /* there may be a window that we remember from last detach: */
- if (D_user->u_detachwin >= 0)
- fore = wtab[D_user->u_detachwin];
- /* Wayne wants us to restore the other window too. */
- if (D_user->u_detachotherwin >= 0)
- D_other = wtab[D_user->u_detachotherwin];
- /*
- * We want a window to start with.
- * It is the window we left from, which is not occupied and
- * grants us full read/write permissions.
- */
-#ifdef MULTIUSER
- if (!fore || fore->w_display || AclCheckPermWin(D_user, ACL_WRITE, fore))
-#else
- if (!fore || fore->w_display)
-#endif
- {
- /* try to get another window */
-#ifdef MULTIUSER
- for (wi = windows; wi; wi = wi->w_next)
- if (!wi->w_display && !AclCheckPermWin(D_user, ACL_WRITE, fore))
- break;
- if (!wi)
- for (wi = windows; wi; wi = wi->w_next)
- if (!wi->w_display && !AclCheckPermWin(D_user, ACL_READ, fore))
- break;
- if (!wi)
+#ifdef PASSWORD
+ if (D_user->u_password && *D_user->u_password)
+ AskPassword(&m);
+ else
#endif
- for (wi = windows; wi; wi = wi->w_next)
- if (!wi->w_display)
- break;
- fore = wi;
- }
- if (fore)
- SetForeWindow(fore);
- Activate(0);
- if (!D_fore)
- ShowWindows();
- if (displays->d_next == 0 && console_window)
- {
- if (TtyGrabConsole(console_window->w_ptyfd, 1, "reattach") == 0)
- Msg(0, "console %s is on window %d", HostName, console_window->w_number);
- }
- debug("activated...\n");
+ FinishAttach(&m);
break;
case MSG_ERROR:
Msg(0, "%s", m.m.message);
@@ -1220,7 +1054,6 @@ chsock()
return r;
}
-
/*
* Try to recreate the socket/pipe
*/
@@ -1239,5 +1072,209 @@ RecoverSocket()
if ((ServerSocket = MakeServerSocket()) < 0)
return 0;
+ evdeq(&serv_read);
+ serv_read.fd = ServerSocket;
+ evenq(&serv_read);
return 1;
}
+
+
+static void
+FinishAttach(m)
+struct msg *m;
+{
+ char *p;
+ int pid;
+ struct win *wi;
+
+ ASSERT(display);
+ pid = D_userpid;
+
+#if defined(pyr) || defined(xelos) || defined(sequent)
+ /*
+ * Kludge for systems with braindamaged termcap routines,
+ * which evaluate $TERMCAP, regardless weather it describes
+ * the correct terminal type or not.
+ */
+ debug("unsetenv(TERMCAP) in case of a different terminal");
+ unsetenv("TERMCAP");
+#endif
+
+ /*
+ * We reboot our Terminal Emulator. Forget all we knew about
+ * the old terminal, reread the termcap entries in .screenrc
+ * (and nothing more from .screenrc is read. Mainly because
+ * I did not check, weather a full reinit is save. jw)
+ * and /etc/screenrc, and initialise anew.
+ */
+ if (extra_outcap)
+ free(extra_outcap);
+ if (extra_incap)
+ free(extra_incap);
+ extra_incap = extra_outcap = 0;
+ debug2("Message says size (%dx%d)\n", m->m.attach.columns, m->m.attach.lines);
+#ifdef ETCSCREENRC
+# ifdef ALLOW_SYSSCREENRC
+ if ((p = getenv("SYSSCREENRC")))
+ StartRc(p);
+ else
+# endif
+ StartRc(ETCSCREENRC);
+#endif
+ StartRc(RcFileName);
+ if (InitTermcap(m->m.attach.columns, m->m.attach.lines))
+ {
+ FreeDisplay();
+ Kill(pid, SIG_BYE);
+ return;
+ }
+ MakeDefaultCanvas();
+ InitTerm(m->m.attach.adaptflag); /* write init string on fd */
+ if (displays->d_next == 0)
+ (void) chsock();
+ signal(SIGHUP, SigHup);
+ if (m->m.attach.esc != -1 && m->m.attach.meta_esc != -1)
+ {
+ D_user->u_Esc = m->m.attach.esc;
+ D_user->u_MetaEsc = m->m.attach.meta_esc;
+ }
+
+#ifdef UTMPOK
+ /*
+ * we set the Utmp slots again, if we were detached normally
+ * and if we were detached by ^Z.
+ * don't log zomies back in!
+ */
+ RemoveLoginSlot();
+ if (displays->d_next == 0)
+ for (wi = windows; wi; wi = wi->w_next)
+ if (wi->w_ptyfd >= 0 && wi->w_slot != (slot_t) -1)
+ SetUtmp(wi);
+#endif
+
+ D_fore = NULL;
+ /*
+ * there may be a window that we remember from last detach:
+ */
+ debug1("D_user->u_detachwin = %d\n", D_user->u_detachwin);
+ if (D_user->u_detachwin >= 0)
+ fore = wtab[D_user->u_detachwin];
+ else
+ fore = 0;
+
+ /* Wayne wants us to restore the other window too. */
+ if (D_user->u_detachotherwin >= 0)
+ D_other = wtab[D_user->u_detachotherwin];
+
+ fore = FindNiceWindow(fore, *m->m.attach.preselect ? m->m.attach.preselect : 0);
+ if (fore)
+ SetForeWindow(fore);
+ Activate(0);
+ if (!D_fore)
+ ShowWindows(-1);
+ if (displays->d_next == 0 && console_window)
+ {
+ if (TtyGrabConsole(console_window->w_ptyfd, 1, "reattach") == 0)
+ Msg(0, "console %s is on window %d", HostName, console_window->w_number);
+ }
+ debug("activated...\n");
+
+# if defined(DEBUG) && defined(SIG_NODEBUG)
+ if (!dfp)
+ {
+ sleep(1);
+ debug1("Attacher %d must not debug, as we have debug off.\n", pid);
+ kill(pid, SIG_NODEBUG);
+ }
+# endif /* SIG_NODEBUG */
+}
+
+
+#ifdef PASSWORD
+static void PasswordProcessInput __P((char *, int));
+
+struct pwdata {
+ int l;
+ char buf[8];
+ struct msg m;
+};
+
+static void
+AskPassword(m)
+struct msg *m;
+{
+ struct pwdata *pwdata;
+ ASSERT(display);
+ pwdata = (struct pwdata *)malloc(sizeof(struct pwdata));
+ if (!pwdata)
+ Panic(0, strnomem);
+ pwdata->l = 0;
+ pwdata->m = *m;
+ D_processinputdata = (char *)pwdata;
+ D_processinput = PasswordProcessInput;
+ AddStr("Screen password: ");
+}
+
+static void
+PasswordProcessInput(ibuf, ilen)
+char *ibuf;
+int ilen;
+{
+ struct pwdata *pwdata;
+ int c, l;
+ char *up;
+ int pid = D_userpid;
+
+ pwdata = (struct pwdata *)D_processinputdata;
+ l = pwdata->l;
+ while (ilen-- > 0)
+ {
+ c = *(unsigned char *)ibuf++;
+ if (c == '\r' || c == '\n')
+ {
+ up = D_user->u_password;
+ pwdata->buf[l] = 0;
+ if (strncmp(crypt(pwdata->buf, up), up, strlen(up)))
+ {
+ /* uh oh, user failed */
+ bzero(pwdata->buf, sizeof(pwdata->buf));
+ AddStr("\r\nPassword incorrect.\r\n");
+ D_processinputdata = 0; /* otherwise freed by FreeDis */
+ FreeDisplay();
+ Msg(0, "Illegal reattach attempt from terminal %s.", pwdata->m.m_tty);
+ free(pwdata);
+ Kill(pid, SIG_BYE);
+ return;
+ }
+ /* great, pw matched, all is fine */
+ bzero(pwdata->buf, sizeof(pwdata->buf));
+ D_processinputdata = 0;
+ D_processinput = ProcessInput;
+ FinishAttach(&pwdata->m);
+ free(pwdata);
+ return;
+ }
+ if (c == Ctrl('c'))
+ {
+ AddStr("\r\n");
+ FreeDisplay();
+ Kill(pid, SIG_BYE);
+ return;
+ }
+ if (c == '\b' || c == 0177)
+ {
+ if (l > 0)
+ l--;
+ continue;
+ }
+ if (c == Ctrl('u'))
+ {
+ l = 0;
+ continue;
+ }
+ if (l < 8)
+ pwdata->buf[l++] = c;
+ }
+ pwdata->l = l;
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-07 15:03:07 +0000