*/
#ifndef lint
-static char rcsid[] = "$Id: ccp.c,v 1.14 1996/01/01 22:55:26 paulus Exp $";
+static char rcsid[] = "$Id: ccp.c,v 1.15 1996/01/18 03:20:25 paulus Exp $";
#endif
#include <syslog.h>
struct protent ccp_protent = {
PPP_CCP, ccp_init, ccp_input, ccp_protrej,
ccp_lowerup, ccp_lowerdown, ccp_open, ccp_close,
- ccp_printpkt, NULL, 1, "CCP", NULL, NULL
+ ccp_printpkt, ccp_datainput, 1, "CCP", NULL, NULL
};
fsm ccp_fsm[NUM_PPP];
memset(&ccp_allowoptions[unit], 0, sizeof(ccp_options));
memset(&ccp_hisoptions[unit], 0, sizeof(ccp_options));
- ccp_wantoptions[0].bsd_compress = 1;
- ccp_wantoptions[0].bsd_bits = 12; /* default value */
+ ccp_wantoptions[0].deflate = 1;
+ ccp_wantoptions[0].deflate_size = DEFLATE_MAX_SIZE;
+ ccp_allowoptions[0].deflate = 1;
+ ccp_allowoptions[0].deflate_size = DEFLATE_MAX_SIZE;
+ ccp_wantoptions[0].bsd_compress = 1;
+ ccp_wantoptions[0].bsd_bits = BSD_MAX_BITS;
ccp_allowoptions[0].bsd_compress = 1;
ccp_allowoptions[0].bsd_bits = BSD_MAX_BITS;
ho->deflate_size = nb = DEFLATE_SIZE(p[2]);
if (DEFLATE_METHOD(p[2]) != DEFLATE_METHOD_VAL
|| p[3] != DEFLATE_CHK_SEQUENCE
- || nb > ao->deflate_size) {
+ || nb > ao->deflate_size || nb < DEFLATE_MIN_SIZE) {
newret = CONFNAK;
- nb = ao->deflate_size;
- } else {
- /*
- * Check whether we can do Deflate with the window
- * size they want. If the window is too big, reduce
- * it until the kernel can cope and nak with that.
- */
+ if (!dont_nak) {
+ p[2] = DEFLATE_MAKE_OPT(ao->deflate_size);
+ p[3] = DEFLATE_CHK_SEQUENCE;
+ }
+ break;
+ }
+
+ /*
+ * Check whether we can do Deflate with the window
+ * size they want. If the window is too big, reduce
+ * it until the kernel can cope and nak with that.
+ * We only check this for the first option.
+ */
+ if (p == p0) {
for (;;) {
- if (nb < DEFLATE_MIN_SIZE) {
+ res = ccp_test(f->unit, p, CILEN_DEFLATE, 1);
+ if (res > 0)
+ break; /* it's OK now */
+ if (res < 0 || nb == DEFLATE_MIN_SIZE || dont_nak) {
newret = CONFREJ;
p[2] = DEFLATE_MAKE_OPT(ho->deflate_size);
break;
}
- p[2] = DEFLATE_MAKE_OPT(nb);
- res = ccp_test(f->unit, p, CILEN_DEFLATE, 1);
- if (res != 0) {
- if (res < 0)
- newret = CONFREJ;
- break;
- }
newret = CONFNAK;
--nb;
- }
- }
- if (newret == CONFNAK && !dont_nak) {
- if (nb >= DEFLATE_MIN_SIZE) {
p[2] = DEFLATE_MAKE_OPT(nb);
- p[3] = DEFLATE_CHK_SEQUENCE;
- } else {
- newret = CONFREJ;
}
}
break;
ho->bsd_compress = 1;
ho->bsd_bits = nb = BSD_NBITS(p[2]);
if (BSD_VERSION(p[2]) != BSD_CURRENT_VERSION
- || nb > ao->bsd_bits) {
+ || nb > ao->bsd_bits || nb < BSD_MIN_BITS) {
newret = CONFNAK;
- nb = ao->bsd_bits;
- } else {
- /*
- * Check whether we can do BSD_Compress with the code
- * size they want. If the code size is too big, reduce
- * it until the kernel can cope and nak with that.
- */
+ if (!dont_nak)
+ p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, ao->bsd_bits);
+ break;
+ }
+
+ /*
+ * Check whether we can do BSD-Compress with the code
+ * size they want. If the code size is too big, reduce
+ * it until the kernel can cope and nak with that.
+ * We only check this for the first option.
+ */
+ if (p == p0) {
for (;;) {
- if (nb < BSD_MIN_BITS) {
+ res = ccp_test(f->unit, p, CILEN_BSD_COMPRESS, 1);
+ if (res > 0)
+ break;
+ if (res < 0 || nb == BSD_MIN_BITS || dont_nak) {
newret = CONFREJ;
p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION,
ho->bsd_bits);
break;
}
- p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, nb);
- res = ccp_test(f->unit, p, CILEN_BSD_COMPRESS, 1);
- if (res != 0) {
- if (res < 0)
- newret = CONFREJ;
- break;
- }
newret = CONFNAK;
--nb;
- }
- }
- if (newret == CONFNAK && !dont_nak) {
- if (nb >= BSD_MIN_BITS) {
p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, nb);
- } else {
- newret = CONFREJ;
}
}
break;
}
ho->predictor_1 = 1;
- if (ccp_test(f->unit, p, CILEN_PREDICTOR_1, 1) <= 0) {
+ if (p == p0
+ && ccp_test(f->unit, p, CILEN_PREDICTOR_1, 1) <= 0) {
newret = CONFREJ;
}
break;
}
ho->predictor_2 = 1;
- if (ccp_test(f->unit, p, CILEN_PREDICTOR_2, 1) <= 0) {
+ if (p == p0
+ && ccp_test(f->unit, p, CILEN_PREDICTOR_2, 1) <= 0) {
newret = CONFREJ;
}
break;