+
+#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;
+}
+
+char *slcnames[] = { SLC_NAMES };
+
+void
+printsub(dirp, pointer, length)
+char *dirp;
+unsigned char *pointer; /* where suboption data sits */
+int length; /* length of suboption data */
+{
+ register int i;
+
+ if (dirp) {
+ sprintf(nfrontp, "%s suboption ", dirp);
+ 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 0:
+ sprintf(nfrontp, " OFF"); break;
+ case 1:
+ sprintf(nfrontp, " ON"); 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 (pointer[i+SLC_FUNC] <= NSLC)
+ sprintf(nfrontp, " %s", slcnames[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((int)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_ENVIRON:
+ sprintf(nfrontp, "ENVIRON ");
+ 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 ENV_VAR:
+ if (pointer[1] == TELQUAL_SEND)
+ goto def_case;
+ sprintf(nfrontp, "\" VAR " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case 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;
+
+ 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;
+
+ default:
+ sprintf(nfrontp, "Unknown option ");
+ nfrontp += strlen(nfrontp);
+ for (i = 0; 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 */
+
+#ifdef NO_STRERROR
+char *
+strerror(errno)
+{
+ extern char *sys_errlist[];
+
+ return(sys_errlist[errno]);
+}
+#endif
projects / unix-history / commitdiff