diff options
Diffstat (limited to 'secure/libexec/telnetd/utility.c')
-rw-r--r-- | secure/libexec/telnetd/utility.c | 1202 |
1 files changed, 0 insertions, 1202 deletions
diff --git a/secure/libexec/telnetd/utility.c b/secure/libexec/telnetd/utility.c deleted file mode 100644 index e2f285a..0000000 --- a/secure/libexec/telnetd/utility.c +++ /dev/null @@ -1,1202 +0,0 @@ -/* - * Copyright (c) 1989, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char sccsid[] = "@(#)utility.c 8.4 (Berkeley) 5/30/95"; -#endif /* not lint */ - -#ifdef __FreeBSD__ -#include <locale.h> -#endif -#define PRINTOPTIONS -#include "telnetd.h" - -/* - * utility functions performing io related tasks - */ - -/* - * ttloop - * - * A small subroutine to flush the network output buffer, get some data - * from the network, and pass it through the telnet state machine. We - * also flush the pty input buffer (by dropping its data) if it becomes - * too full. - */ - - void -ttloop() -{ - void netflush(); - - DIAG(TD_REPORT, {sprintf(nfrontp, "td: ttloop\r\n"); - nfrontp += strlen(nfrontp);}); - if (nfrontp-nbackp) { - netflush(); - } - ncc = read(net, netibuf, sizeof netibuf); - if (ncc < 0) { - syslog(LOG_INFO, "ttloop: read: %m\n"); - exit(1); - } else if (ncc == 0) { - syslog(LOG_INFO, "ttloop: peer died: %m\n"); - exit(1); - } - DIAG(TD_REPORT, {sprintf(nfrontp, "td: ttloop read %d chars\r\n", ncc); - nfrontp += strlen(nfrontp);}); - netip = netibuf; - telrcv(); /* state machine */ - if (ncc > 0) { - pfrontp = pbackp = ptyobuf; - telrcv(); - } -} /* end of ttloop */ - -/* - * Check a descriptor to see if out of band data exists on it. - */ - int -stilloob(s) - int s; /* socket number */ -{ - static struct timeval timeout = { 0 }; - fd_set excepts; - int value; - - do { - FD_ZERO(&excepts); - FD_SET(s, &excepts); - value = select(s+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout); - } while ((value == -1) && (errno == EINTR)); - - if (value < 0) { - fatalperror(pty, "select"); - } - if (FD_ISSET(s, &excepts)) { - return 1; - } else { - return 0; - } -} - - void -ptyflush() -{ - int n; - - if ((n = pfrontp - pbackp) > 0) { - DIAG((TD_REPORT | TD_PTYDATA), - { sprintf(nfrontp, "td: ptyflush %d chars\r\n", n); - nfrontp += strlen(nfrontp); }); - DIAG(TD_PTYDATA, printdata("pd", pbackp, n)); - n = write(pty, pbackp, n); - } - if (n < 0) { - if (errno == EWOULDBLOCK || errno == EINTR) - return; - cleanup(0); - } - pbackp += n; - if (pbackp == pfrontp) - pbackp = pfrontp = ptyobuf; -} - -/* - * nextitem() - * - * Return the address of the next "item" in the TELNET data - * stream. This will be the address of the next character if - * the current address is a user data character, or it will - * be the address of the character following the TELNET command - * if the current address is a TELNET IAC ("I Am a Command") - * character. - */ - char * -nextitem(current) - char *current; -{ - if ((*current&0xff) != IAC) { - return current+1; - } - switch (*(current+1)&0xff) { - case DO: - case DONT: - case WILL: - case WONT: - return current+3; - case SB: /* loop forever looking for the SE */ - { - register char *look = current+2; - - for (;;) { - if ((*look++&0xff) == IAC) { - if ((*look++&0xff) == SE) { - return look; - } - } - } - } - default: - return current+2; - } -} /* end of nextitem */ - - -/* - * netclear() - * - * We are about to do a TELNET SYNCH operation. Clear - * the path to the network. - * - * Things are a bit tricky since we may have sent the first - * byte or so of a previous TELNET command into the network. - * So, we have to scan the network buffer from the beginning - * until we are up to where we want to be. - * - * A side effect of what we do, just to keep things - * simple, is to clear the urgent data pointer. The principal - * caller should be setting the urgent data pointer AFTER calling - * us in any case. - */ - void -netclear() -{ - register char *thisitem, *next; - char *good; -#define wewant(p) ((nfrontp > p) && ((*p&0xff) == IAC) && \ - ((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL)) - -#ifdef ENCRYPTION - thisitem = nclearto > netobuf ? nclearto : netobuf; -#else /* ENCRYPTION */ - thisitem = netobuf; -#endif /* ENCRYPTION */ - - while ((next = nextitem(thisitem)) <= nbackp) { - thisitem = next; - } - - /* Now, thisitem is first before/at boundary. */ - -#ifdef ENCRYPTION - good = nclearto > netobuf ? nclearto : netobuf; -#else /* ENCRYPTION */ - good = netobuf; /* where the good bytes go */ -#endif /* ENCRYPTION */ - - while (nfrontp > thisitem) { - if (wewant(thisitem)) { - int length; - - next = thisitem; - do { - next = nextitem(next); - } while (wewant(next) && (nfrontp > next)); - length = next-thisitem; - memmove(good, thisitem, length); - good += length; - thisitem = next; - } else { - thisitem = nextitem(thisitem); - } - } - - nbackp = netobuf; - nfrontp = good; /* next byte to be sent */ - neturg = 0; -} /* end of netclear */ - -/* - * netflush - * Send as much data as possible to the network, - * handling requests for urgent data. - */ - void -netflush() -{ - int n; - extern int not42; - - if ((n = nfrontp - nbackp) > 0) { - DIAG(TD_REPORT, - { sprintf(nfrontp, "td: netflush %d chars\r\n", n); - n += strlen(nfrontp); /* get count first */ - nfrontp += strlen(nfrontp); /* then move pointer */ - }); -#ifdef ENCRYPTION - if (encrypt_output) { - char *s = nclearto ? nclearto : nbackp; - if (nfrontp - s > 0) { - (*encrypt_output)((unsigned char *)s, nfrontp-s); - nclearto = nfrontp; - } - } -#endif /* ENCRYPTION */ - /* - * if no urgent data, or if the other side appears to be an - * old 4.2 client (and thus unable to survive TCP urgent data), - * write the entire buffer in non-OOB mode. - */ - if ((neturg == 0) || (not42 == 0)) { - n = write(net, nbackp, n); /* normal write */ - } else { - n = neturg - nbackp; - /* - * In 4.2 (and 4.3) systems, there is some question about - * what byte in a sendOOB operation is the "OOB" data. - * To make ourselves compatible, we only send ONE byte - * out of band, the one WE THINK should be OOB (though - * we really have more the TCP philosophy of urgent data - * rather than the Unix philosophy of OOB data). - */ - if (n > 1) { - n = send(net, nbackp, n-1, 0); /* send URGENT all by itself */ - } else { - n = send(net, nbackp, n, MSG_OOB); /* URGENT data */ - } - } - } - if (n < 0) { - if (errno == EWOULDBLOCK || errno == EINTR) - return; - cleanup(0); - } - nbackp += n; -#ifdef ENCRYPTION - if (nbackp > nclearto) - nclearto = 0; -#endif /* ENCRYPTION */ - if (nbackp >= neturg) { - neturg = 0; - } - if (nbackp == nfrontp) { - nbackp = nfrontp = netobuf; -#ifdef ENCRYPTION - nclearto = 0; -#endif /* ENCRYPTION */ - } - return; -} /* end of netflush */ - - -/* - * writenet - * - * Just a handy little function to write a bit of raw data to the net. - * It will force a transmit of the buffer if necessary - * - * arguments - * ptr - A pointer to a character string to write - * len - How many bytes to write - */ - void -writenet(ptr, len) - register unsigned char *ptr; - register int len; -{ - /* flush buffer if no room for new data) */ - if ((&netobuf[BUFSIZ] - nfrontp) < len) { - /* if this fails, don't worry, buffer is a little big */ - netflush(); - } - - memmove(nfrontp, ptr, len); - nfrontp += len; - -} /* end of writenet */ - - -/* - * miscellaneous functions doing a variety of little jobs follow ... - */ - - - void -fatal(f, msg) - int f; - char *msg; -{ - char buf[BUFSIZ]; - - (void) sprintf(buf, "telnetd: %s.\r\n", msg); -#ifdef ENCRYPTION - if (encrypt_output) { - /* - * Better turn off encryption first.... - * Hope it flushes... - */ - encrypt_send_end(); - netflush(); - } -#endif /* ENCRYPTION */ - (void) write(f, buf, (int)strlen(buf)); - sleep(1); /*XXX*/ - exit(1); -} - - void -fatalperror(f, msg) - int f; - char *msg; -{ - char buf[BUFSIZ], *strerror(); - - (void) sprintf(buf, "%s: %s", msg, strerror(errno)); - fatal(f, buf); -} - -char editedhost[32]; - - void -edithost(pat, host) - register char *pat; - register char *host; -{ - register char *res = editedhost; - char *strncpy(); - - if (!pat) - pat = ""; - while (*pat) { - switch (*pat) { - - case '#': - if (*host) - host++; - break; - - case '@': - if (*host) - *res++ = *host++; - break; - - default: - *res++ = *pat; - break; - } - if (res == &editedhost[sizeof editedhost - 1]) { - *res = '\0'; - return; - } - pat++; - } - if (*host) - (void) strncpy(res, host, - sizeof editedhost - (res - editedhost) -1); - else - *res = '\0'; - editedhost[sizeof editedhost - 1] = '\0'; -} - -static char *putlocation; - - void -putstr(s) - register char *s; -{ - - while (*s) - putchr(*s++); -} - - void -putchr(cc) - int cc; -{ - *putlocation++ = cc; -} - -#ifdef __FreeBSD__ -static char fmtstr[] = { "%+" }; -#else -/* - * This is split on two lines so that SCCS will not see the M - * between two % signs and expand it... - */ -static char fmtstr[] = { "%l:%M\ -%P on %A, %d %B %Y" }; -#endif - - void -putf(cp, where) - register char *cp; - char *where; -{ - char *slash; - time_t t; - char db[100]; -#ifdef STREAMSPTY - extern char *strchr(); -#else - extern char *strrchr(); -#endif - - putlocation = where; - - while (*cp) { - if (*cp != '%') { - putchr(*cp++); - continue; - } - switch (*++cp) { - - case 't': -#ifdef STREAMSPTY - /* names are like /dev/pts/2 -- we want pts/2 */ - slash = strchr(line+1, '/'); -#else - slash = strrchr(line, '/'); -#endif - if (slash == (char *) 0) - putstr(line); - else - putstr(&slash[1]); - break; - - case 'h': - putstr(editedhost); - break; - - case 'd': -#ifdef __FreeBSD__ - setlocale(LC_TIME, ""); -#endif - (void)time(&t); - (void)strftime(db, sizeof(db), fmtstr, localtime(&t)); - putstr(db); - break; - - case '%': - putchr('%'); - break; - } - cp++; - } -} - -#ifdef DIAGNOSTICS -/* - * Print telnet options and commands in plain text, if possible. - */ - void -printoption(fmt, option) - register char *fmt; - register int option; -{ - if (TELOPT_OK(option)) - sprintf(nfrontp, "%s %s\r\n", fmt, TELOPT(option)); - else if (TELCMD_OK(option)) - sprintf(nfrontp, "%s %s\r\n", fmt, TELCMD(option)); - else - sprintf(nfrontp, "%s %d\r\n", fmt, option); - nfrontp += strlen(nfrontp); - return; -} - - void -printsub(direction, pointer, length) - char direction; /* '<' or '>' */ - unsigned char *pointer; /* where suboption data sits */ - int length; /* length of suboption data */ -{ - register int i; - char buf[512]; - - if (!(diagnostic & TD_OPTIONS)) - return; - - if (direction) { - sprintf(nfrontp, "td: %s suboption ", - direction == '<' ? "recv" : "send"); - nfrontp += strlen(nfrontp); - if (length >= 3) { - register int j; - - i = pointer[length-2]; - j = pointer[length-1]; - - if (i != IAC || j != SE) { - sprintf(nfrontp, "(terminated by "); - nfrontp += strlen(nfrontp); - if (TELOPT_OK(i)) - sprintf(nfrontp, "%s ", TELOPT(i)); - else if (TELCMD_OK(i)) - sprintf(nfrontp, "%s ", TELCMD(i)); - else - sprintf(nfrontp, "%d ", i); - nfrontp += strlen(nfrontp); - if (TELOPT_OK(j)) - sprintf(nfrontp, "%s", TELOPT(j)); - else if (TELCMD_OK(j)) - sprintf(nfrontp, "%s", TELCMD(j)); - else - sprintf(nfrontp, "%d", j); - nfrontp += strlen(nfrontp); - sprintf(nfrontp, ", not IAC SE!) "); - nfrontp += strlen(nfrontp); - } - } - length -= 2; - } - if (length < 1) { - sprintf(nfrontp, "(Empty suboption??\?)"); - nfrontp += strlen(nfrontp); - return; - } - switch (pointer[0]) { - case TELOPT_TTYPE: - sprintf(nfrontp, "TERMINAL-TYPE "); - nfrontp += strlen(nfrontp); - switch (pointer[1]) { - case TELQUAL_IS: - sprintf(nfrontp, "IS \"%.*s\"", length-2, (char *)pointer+2); - break; - case TELQUAL_SEND: - sprintf(nfrontp, "SEND"); - break; - default: - sprintf(nfrontp, - "- unknown qualifier %d (0x%x).", - pointer[1], pointer[1]); - } - nfrontp += strlen(nfrontp); - break; - case TELOPT_TSPEED: - sprintf(nfrontp, "TERMINAL-SPEED"); - nfrontp += strlen(nfrontp); - if (length < 2) { - sprintf(nfrontp, " (empty suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - switch (pointer[1]) { - case TELQUAL_IS: - sprintf(nfrontp, " IS %.*s", length-2, (char *)pointer+2); - nfrontp += strlen(nfrontp); - break; - default: - if (pointer[1] == 1) - sprintf(nfrontp, " SEND"); - else - sprintf(nfrontp, " %d (unknown)", pointer[1]); - nfrontp += strlen(nfrontp); - for (i = 2; i < length; i++) { - sprintf(nfrontp, " ?%d?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - } - break; - - case TELOPT_LFLOW: - sprintf(nfrontp, "TOGGLE-FLOW-CONTROL"); - nfrontp += strlen(nfrontp); - if (length < 2) { - sprintf(nfrontp, " (empty suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - switch (pointer[1]) { - case LFLOW_OFF: - sprintf(nfrontp, " OFF"); break; - case LFLOW_ON: - sprintf(nfrontp, " ON"); break; - case LFLOW_RESTART_ANY: - sprintf(nfrontp, " RESTART-ANY"); break; - case LFLOW_RESTART_XON: - sprintf(nfrontp, " RESTART-XON"); break; - default: - sprintf(nfrontp, " %d (unknown)", pointer[1]); - } - nfrontp += strlen(nfrontp); - for (i = 2; i < length; i++) { - sprintf(nfrontp, " ?%d?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - - case TELOPT_NAWS: - sprintf(nfrontp, "NAWS"); - nfrontp += strlen(nfrontp); - if (length < 2) { - sprintf(nfrontp, " (empty suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - if (length == 2) { - sprintf(nfrontp, " ?%d?", pointer[1]); - nfrontp += strlen(nfrontp); - break; - } - sprintf(nfrontp, " %d %d (%d)", - pointer[1], pointer[2], - (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2]))); - nfrontp += strlen(nfrontp); - if (length == 4) { - sprintf(nfrontp, " ?%d?", pointer[3]); - nfrontp += strlen(nfrontp); - break; - } - sprintf(nfrontp, " %d %d (%d)", - pointer[3], pointer[4], - (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4]))); - nfrontp += strlen(nfrontp); - for (i = 5; i < length; i++) { - sprintf(nfrontp, " ?%d?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - - case TELOPT_LINEMODE: - sprintf(nfrontp, "LINEMODE "); - nfrontp += strlen(nfrontp); - if (length < 2) { - sprintf(nfrontp, " (empty suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - switch (pointer[1]) { - case WILL: - sprintf(nfrontp, "WILL "); - goto common; - case WONT: - sprintf(nfrontp, "WONT "); - goto common; - case DO: - sprintf(nfrontp, "DO "); - goto common; - case DONT: - sprintf(nfrontp, "DONT "); - common: - nfrontp += strlen(nfrontp); - if (length < 3) { - sprintf(nfrontp, "(no option??\?)"); - nfrontp += strlen(nfrontp); - break; - } - switch (pointer[2]) { - case LM_FORWARDMASK: - sprintf(nfrontp, "Forward Mask"); - nfrontp += strlen(nfrontp); - for (i = 3; i < length; i++) { - sprintf(nfrontp, " %x", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - default: - sprintf(nfrontp, "%d (unknown)", pointer[2]); - nfrontp += strlen(nfrontp); - for (i = 3; i < length; i++) { - sprintf(nfrontp, " %d", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - } - break; - - case LM_SLC: - sprintf(nfrontp, "SLC"); - nfrontp += strlen(nfrontp); - for (i = 2; i < length - 2; i += 3) { - if (SLC_NAME_OK(pointer[i+SLC_FUNC])) - sprintf(nfrontp, " %s", SLC_NAME(pointer[i+SLC_FUNC])); - else - sprintf(nfrontp, " %d", pointer[i+SLC_FUNC]); - nfrontp += strlen(nfrontp); - switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) { - case SLC_NOSUPPORT: - sprintf(nfrontp, " NOSUPPORT"); break; - case SLC_CANTCHANGE: - sprintf(nfrontp, " CANTCHANGE"); break; - case SLC_VARIABLE: - sprintf(nfrontp, " VARIABLE"); break; - case SLC_DEFAULT: - sprintf(nfrontp, " DEFAULT"); break; - } - nfrontp += strlen(nfrontp); - sprintf(nfrontp, "%s%s%s", - pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "", - pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "", - pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : ""); - nfrontp += strlen(nfrontp); - if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN| - SLC_FLUSHOUT| SLC_LEVELBITS)) { - sprintf(nfrontp, "(0x%x)", pointer[i+SLC_FLAGS]); - nfrontp += strlen(nfrontp); - } - sprintf(nfrontp, " %d;", pointer[i+SLC_VALUE]); - nfrontp += strlen(nfrontp); - if ((pointer[i+SLC_VALUE] == IAC) && - (pointer[i+SLC_VALUE+1] == IAC)) - i++; - } - for (; i < length; i++) { - sprintf(nfrontp, " ?%d?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - - case LM_MODE: - sprintf(nfrontp, "MODE "); - nfrontp += strlen(nfrontp); - if (length < 3) { - sprintf(nfrontp, "(no mode??\?)"); - nfrontp += strlen(nfrontp); - break; - } - { - char tbuf[32]; - sprintf(tbuf, "%s%s%s%s%s", - pointer[2]&MODE_EDIT ? "|EDIT" : "", - pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "", - pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "", - pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "", - pointer[2]&MODE_ACK ? "|ACK" : ""); - sprintf(nfrontp, "%s", tbuf[1] ? &tbuf[1] : "0"); - nfrontp += strlen(nfrontp); - } - if (pointer[2]&~(MODE_EDIT|MODE_TRAPSIG|MODE_ACK)) { - sprintf(nfrontp, " (0x%x)", pointer[2]); - nfrontp += strlen(nfrontp); - } - for (i = 3; i < length; i++) { - sprintf(nfrontp, " ?0x%x?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - default: - sprintf(nfrontp, "%d (unknown)", pointer[1]); - nfrontp += strlen(nfrontp); - for (i = 2; i < length; i++) { - sprintf(nfrontp, " %d", pointer[i]); - nfrontp += strlen(nfrontp); - } - } - break; - - case TELOPT_STATUS: { - register char *cp; - register int j, k; - - sprintf(nfrontp, "STATUS"); - nfrontp += strlen(nfrontp); - - switch (pointer[1]) { - default: - if (pointer[1] == TELQUAL_SEND) - sprintf(nfrontp, " SEND"); - else - sprintf(nfrontp, " %d (unknown)", pointer[1]); - nfrontp += strlen(nfrontp); - for (i = 2; i < length; i++) { - sprintf(nfrontp, " ?%d?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - case TELQUAL_IS: - sprintf(nfrontp, " IS\r\n"); - nfrontp += strlen(nfrontp); - - for (i = 2; i < length; i++) { - switch(pointer[i]) { - case DO: cp = "DO"; goto common2; - case DONT: cp = "DONT"; goto common2; - case WILL: cp = "WILL"; goto common2; - case WONT: cp = "WONT"; goto common2; - common2: - i++; - if (TELOPT_OK(pointer[i])) - sprintf(nfrontp, " %s %s", cp, TELOPT(pointer[i])); - else - sprintf(nfrontp, " %s %d", cp, pointer[i]); - nfrontp += strlen(nfrontp); - - sprintf(nfrontp, "\r\n"); - nfrontp += strlen(nfrontp); - break; - - case SB: - sprintf(nfrontp, " SB "); - nfrontp += strlen(nfrontp); - i++; - j = k = i; - while (j < length) { - if (pointer[j] == SE) { - if (j+1 == length) - break; - if (pointer[j+1] == SE) - j++; - else - break; - } - pointer[k++] = pointer[j++]; - } - printsub(0, &pointer[i], k - i); - if (i < length) { - sprintf(nfrontp, " SE"); - nfrontp += strlen(nfrontp); - i = j; - } else - i = j - 1; - - sprintf(nfrontp, "\r\n"); - nfrontp += strlen(nfrontp); - - break; - - default: - sprintf(nfrontp, " %d", pointer[i]); - nfrontp += strlen(nfrontp); - break; - } - } - break; - } - break; - } - - case TELOPT_XDISPLOC: - sprintf(nfrontp, "X-DISPLAY-LOCATION "); - nfrontp += strlen(nfrontp); - switch (pointer[1]) { - case TELQUAL_IS: - sprintf(nfrontp, "IS \"%.*s\"", length-2, (char *)pointer+2); - break; - case TELQUAL_SEND: - sprintf(nfrontp, "SEND"); - break; - default: - sprintf(nfrontp, "- unknown qualifier %d (0x%x).", - pointer[1], pointer[1]); - } - nfrontp += strlen(nfrontp); - break; - - case TELOPT_NEW_ENVIRON: - sprintf(nfrontp, "NEW-ENVIRON "); - goto env_common1; - case TELOPT_OLD_ENVIRON: - sprintf(nfrontp, "OLD-ENVIRON"); - env_common1: - nfrontp += strlen(nfrontp); - switch (pointer[1]) { - case TELQUAL_IS: - sprintf(nfrontp, "IS "); - goto env_common; - case TELQUAL_SEND: - sprintf(nfrontp, "SEND "); - goto env_common; - case TELQUAL_INFO: - sprintf(nfrontp, "INFO "); - env_common: - nfrontp += strlen(nfrontp); - { - register int noquote = 2; - for (i = 2; i < length; i++ ) { - switch (pointer[i]) { - case NEW_ENV_VAR: - sprintf(nfrontp, "\" VAR " + noquote); - nfrontp += strlen(nfrontp); - noquote = 2; - break; - - case NEW_ENV_VALUE: - sprintf(nfrontp, "\" VALUE " + noquote); - nfrontp += strlen(nfrontp); - noquote = 2; - break; - - case ENV_ESC: - sprintf(nfrontp, "\" ESC " + noquote); - nfrontp += strlen(nfrontp); - noquote = 2; - break; - - case ENV_USERVAR: - sprintf(nfrontp, "\" USERVAR " + noquote); - nfrontp += strlen(nfrontp); - noquote = 2; - break; - - default: - def_case: - if (isprint(pointer[i]) && pointer[i] != '"') { - if (noquote) { - *nfrontp++ = '"'; - noquote = 0; - } - *nfrontp++ = pointer[i]; - } else { - sprintf(nfrontp, "\" %03o " + noquote, - pointer[i]); - nfrontp += strlen(nfrontp); - noquote = 2; - } - break; - } - } - if (!noquote) - *nfrontp++ = '"'; - break; - } - } - break; - -#if defined(AUTHENTICATION) - case TELOPT_AUTHENTICATION: - sprintf(nfrontp, "AUTHENTICATION"); - nfrontp += strlen(nfrontp); - - if (length < 2) { - sprintf(nfrontp, " (empty suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - switch (pointer[1]) { - case TELQUAL_REPLY: - case TELQUAL_IS: - sprintf(nfrontp, " %s ", (pointer[1] == TELQUAL_IS) ? - "IS" : "REPLY"); - nfrontp += strlen(nfrontp); - if (AUTHTYPE_NAME_OK(pointer[2])) - sprintf(nfrontp, "%s ", AUTHTYPE_NAME(pointer[2])); - else - sprintf(nfrontp, "%d ", pointer[2]); - nfrontp += strlen(nfrontp); - if (length < 3) { - sprintf(nfrontp, "(partial suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - sprintf(nfrontp, "%s|%s", - ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? - "CLIENT" : "SERVER", - ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? - "MUTUAL" : "ONE-WAY"); - nfrontp += strlen(nfrontp); - - auth_printsub(&pointer[1], length - 1, buf, sizeof(buf)); - sprintf(nfrontp, "%s", buf); - nfrontp += strlen(nfrontp); - break; - - case TELQUAL_SEND: - i = 2; - sprintf(nfrontp, " SEND "); - nfrontp += strlen(nfrontp); - while (i < length) { - if (AUTHTYPE_NAME_OK(pointer[i])) - sprintf(nfrontp, "%s ", AUTHTYPE_NAME(pointer[i])); - else - sprintf(nfrontp, "%d ", pointer[i]); - nfrontp += strlen(nfrontp); - if (++i >= length) { - sprintf(nfrontp, "(partial suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - sprintf(nfrontp, "%s|%s ", - ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? - "CLIENT" : "SERVER", - ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? - "MUTUAL" : "ONE-WAY"); - nfrontp += strlen(nfrontp); - ++i; - } - break; - - case TELQUAL_NAME: - i = 2; - sprintf(nfrontp, " NAME \""); - nfrontp += strlen(nfrontp); - while (i < length) - *nfrontp += pointer[i++]; - *nfrontp += '"'; - break; - - default: - for (i = 2; i < length; i++) { - sprintf(nfrontp, " ?%d?", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - } - break; -#endif - -#ifdef ENCRYPTION - case TELOPT_ENCRYPT: - sprintf(nfrontp, "ENCRYPT"); - nfrontp += strlen(nfrontp); - if (length < 2) { - sprintf(nfrontp, " (empty suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - switch (pointer[1]) { - case ENCRYPT_START: - sprintf(nfrontp, " START"); - nfrontp += strlen(nfrontp); - break; - - case ENCRYPT_END: - sprintf(nfrontp, " END"); - nfrontp += strlen(nfrontp); - break; - - case ENCRYPT_REQSTART: - sprintf(nfrontp, " REQUEST-START"); - nfrontp += strlen(nfrontp); - break; - - case ENCRYPT_REQEND: - sprintf(nfrontp, " REQUEST-END"); - nfrontp += strlen(nfrontp); - break; - - case ENCRYPT_IS: - case ENCRYPT_REPLY: - sprintf(nfrontp, " %s ", (pointer[1] == ENCRYPT_IS) ? - "IS" : "REPLY"); - nfrontp += strlen(nfrontp); - if (length < 3) { - sprintf(nfrontp, " (partial suboption??\?)"); - nfrontp += strlen(nfrontp); - break; - } - if (ENCTYPE_NAME_OK(pointer[2])) - sprintf(nfrontp, "%s ", ENCTYPE_NAME(pointer[2])); - else - sprintf(nfrontp, " %d (unknown)", pointer[2]); - nfrontp += strlen(nfrontp); - - encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf)); - sprintf(nfrontp, "%s", buf); - nfrontp += strlen(nfrontp); - break; - - case ENCRYPT_SUPPORT: - i = 2; - sprintf(nfrontp, " SUPPORT "); - nfrontp += strlen(nfrontp); - while (i < length) { - if (ENCTYPE_NAME_OK(pointer[i])) - sprintf(nfrontp, "%s ", ENCTYPE_NAME(pointer[i])); - else - sprintf(nfrontp, "%d ", pointer[i]); - nfrontp += strlen(nfrontp); - i++; - } - break; - - case ENCRYPT_ENC_KEYID: - sprintf(nfrontp, " ENC_KEYID", pointer[1]); - nfrontp += strlen(nfrontp); - goto encommon; - - case ENCRYPT_DEC_KEYID: - sprintf(nfrontp, " DEC_KEYID", pointer[1]); - nfrontp += strlen(nfrontp); - goto encommon; - - default: - sprintf(nfrontp, " %d (unknown)", pointer[1]); - nfrontp += strlen(nfrontp); - encommon: - for (i = 2; i < length; i++) { - sprintf(nfrontp, " %d", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - } - break; -#endif /* ENCRYPTION */ - - default: - if (TELOPT_OK(pointer[0])) - sprintf(nfrontp, "%s (unknown)", TELOPT(pointer[0])); - else - sprintf(nfrontp, "%d (unknown)", pointer[i]); - nfrontp += strlen(nfrontp); - for (i = 1; i < length; i++) { - sprintf(nfrontp, " %d", pointer[i]); - nfrontp += strlen(nfrontp); - } - break; - } - sprintf(nfrontp, "\r\n"); - nfrontp += strlen(nfrontp); -} - -/* - * Dump a data buffer in hex and ascii to the output data stream. - */ - void -printdata(tag, ptr, cnt) - register char *tag; - register char *ptr; - register int cnt; -{ - register int i; - char xbuf[30]; - - while (cnt) { - /* flush net output buffer if no room for new data) */ - if ((&netobuf[BUFSIZ] - nfrontp) < 80) { - netflush(); - } - - /* add a line of output */ - sprintf(nfrontp, "%s: ", tag); - nfrontp += strlen(nfrontp); - for (i = 0; i < 20 && cnt; i++) { - sprintf(nfrontp, "%02x", *ptr); - nfrontp += strlen(nfrontp); - if (isprint(*ptr)) { - xbuf[i] = *ptr; - } else { - xbuf[i] = '.'; - } - if (i % 2) { - *nfrontp = ' '; - nfrontp++; - } - cnt--; - ptr++; - } - xbuf[i] = '\0'; - sprintf(nfrontp, " %s\r\n", xbuf ); - nfrontp += strlen(nfrontp); - } -} -#endif /* DIAGNOSTICS */ |