X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fccp.c;h=ad82330b45bea0bcd479ac891a1bf1444c12587f;hp=a0eb2ad0d2d3da113cb5cdc762b5aa3c59cbf5f8;hb=642b44a17f5b83cbfbbbca87d85ec0e4d83762cd;hpb=e9316875506b5cd49e43d65ff25650fe20612fe1

diff --git a/pppd/ccp.c b/pppd/ccp.c
index a0eb2ad..ad82330 100644
--- a/pppd/ccp.c
+++ b/pppd/ccp.c
@@ -26,7 +26,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: ccp.c,v 1.16 1996/04/04 03:35:37 paulus Exp $";
+static char rcsid[] = "$Id: ccp.c,v 1.17 1996/07/01 01:11:36 paulus Exp $";
 #endif
 
 #include <string.h>
@@ -38,10 +38,37 @@ static char rcsid[] = "$Id: ccp.c,v 1.16 1996/04/04 03:35:37 paulus Exp $";
 #include "fsm.h"
 #include "ccp.h"
 
+/*
+ * Protocol entry points from main code.
+ */
+static void ccp_init __P((int unit));
+static void ccp_open __P((int unit));
+static void ccp_close __P((int unit, char *));
+static void ccp_lowerup __P((int unit));
+static void ccp_lowerdown __P((int));
+static void ccp_input __P((int unit, u_char *pkt, int len));
+static void ccp_protrej __P((int unit));
+static int  ccp_printpkt __P((u_char *pkt, int len,
+			      void (*printer) __P((void *, char *, ...)),
+			      void *arg));
+static void ccp_datainput __P((int unit, u_char *pkt, int len));
+
 struct protent ccp_protent = {
-    PPP_CCP, ccp_init, ccp_input, ccp_protrej,
-    ccp_lowerup, ccp_lowerdown, ccp_open, ccp_close,
-    ccp_printpkt, ccp_datainput, 1, "CCP", NULL, NULL
+    PPP_CCP,
+    ccp_init,
+    ccp_input,
+    ccp_protrej,
+    ccp_lowerup,
+    ccp_lowerdown,
+    ccp_open,
+    ccp_close,
+    ccp_printpkt,
+    ccp_datainput,
+    1,
+    "CCP",
+    NULL,
+    NULL,
+    NULL
 };
 
 fsm ccp_fsm[NUM_PPP];
@@ -64,6 +91,7 @@ static void ccp_up __P((fsm *));
 static void ccp_down __P((fsm *));
 static int  ccp_extcode __P((fsm *, int, int, u_char *, int));
 static void ccp_rack_timeout __P(());
+static char *method_name __P((ccp_options *, ccp_options *));
 
 static fsm_callbacks ccp_callbacks = {
     ccp_resetci,
@@ -103,7 +131,7 @@ static int all_rejected[NUM_PPP];	/* we rejected all peer's options */
 /*
  * ccp_init - initialize CCP.
  */
-void
+static void
 ccp_init(unit)
     int unit;
 {
@@ -158,7 +186,7 @@ ccp_open(unit)
 /*
  * ccp_close - Terminate CCP.
  */
-void
+static void
 ccp_close(unit, reason)
     int unit;
     char *reason;
@@ -170,7 +198,7 @@ ccp_close(unit, reason)
 /*
  * ccp_lowerup - we may now transmit CCP packets.
  */
-void
+static void
 ccp_lowerup(unit)
     int unit;
 {
@@ -180,7 +208,7 @@ ccp_lowerup(unit)
 /*
  * ccp_lowerdown - we may not transmit CCP packets.
  */
-void
+static void
 ccp_lowerdown(unit)
     int unit;
 {
@@ -190,7 +218,7 @@ ccp_lowerdown(unit)
 /*
  * ccp_input - process a received CCP packet.
  */
-void
+static void
 ccp_input(unit, p, len)
     int unit;
     u_char *p;
@@ -252,7 +280,7 @@ ccp_extcode(f, code, id, p, len)
 /*
  * ccp_protrej - peer doesn't talk CCP.
  */
-void
+static void
 ccp_protrej(unit)
     int unit;
 {
@@ -400,6 +428,8 @@ ccp_addci(f, p, lenp)
 	}
     }
 
+    go->method = (p > p0)? p0[0]: -1;
+
     *lenp = p - p0;
 }
 
@@ -611,6 +641,7 @@ ccp_reqci(f, p, lenp, dont_nak)
     len = *lenp;
 
     memset(ho, 0, sizeof(ccp_options));
+    ho->method = (len > 0)? p[0]: -1;
 
     while (len > 0) {
 	newret = CONFACK;
@@ -763,7 +794,43 @@ ccp_reqci(f, p, lenp, dont_nak)
 }
 
 /*
- * CCP has come up - inform the kernel driver.
+ * Make a string name for a compression method (or 2).
+ */
+static char *
+method_name(opt, opt2)
+    ccp_options *opt, *opt2;
+{
+    static char result[64];
+
+    if (!ANY_COMPRESS(*opt))
+	return "(none)";
+    switch (opt->method) {
+    case CI_DEFLATE:
+	if (opt2 != NULL && opt2->deflate_size != opt->deflate_size)
+	    sprintf(result, "Deflate (%d/%d)", opt->deflate_size,
+		    opt2->deflate_size);
+	else
+	    sprintf(result, "Deflate (%d)", opt->deflate_size);
+	break;
+    case CI_BSD_COMPRESS:
+	if (opt2 != NULL && opt2->bsd_bits != opt->bsd_bits)
+	    sprintf(result, "BSD-Compress (%d/%d)", opt->bsd_bits,
+		    opt2->bsd_bits);
+	else
+	    sprintf(result, "BSD-Compress (%d)", opt->bsd_bits);
+	break;
+    case CI_PREDICTOR_1:
+	return "Predictor 1";
+    case CI_PREDICTOR_2:
+	return "Predictor 2";
+    default:
+	sprintf(result, "Method %d", opt->method);
+    }
+    return result;
+}
+
+/*
+ * CCP has come up - inform the kernel driver and log a message.
  */
 static void
 ccp_up(f)
@@ -771,12 +838,25 @@ ccp_up(f)
 {
     ccp_options *go = &ccp_gotoptions[f->unit];
     ccp_options *ho = &ccp_hisoptions[f->unit];
+    char method1[64];
 
     ccp_flags_set(f->unit, 1, 1);
-    if (ANY_COMPRESS(*go) || ANY_COMPRESS(*ho))
-	syslog(LOG_NOTICE, "%s enabled",
-	       ANY_COMPRESS(*go)? ANY_COMPRESS(*ho)? "Compression":
-	       "Receive compression": "Transmit compression");
+    if (ANY_COMPRESS(*go)) {
+	if (ANY_COMPRESS(*ho)) {
+	    if (go->method == ho->method) {
+		syslog(LOG_NOTICE, "%s compression enabled",
+		       method_name(go, ho));
+	    } else {
+		strcpy(method1, method_name(go, NULL));
+		syslog(LOG_NOTICE, "%s / %s compression enabled",
+		       method1, method_name(ho, NULL));
+	    }
+	} else
+	    syslog(LOG_NOTICE, "%s receive compression enabled",
+		   method_name(go, NULL));
+    } else
+	syslog(LOG_NOTICE, "%s transmit compression enabled",
+	       method_name(ho, NULL));
 }
 
 /*
@@ -795,14 +875,14 @@ ccp_down(f)
 /*
  * Print the contents of a CCP packet.
  */
-char *ccp_codenames[] = {
+static char *ccp_codenames[] = {
     "ConfReq", "ConfAck", "ConfNak", "ConfRej",
     "TermReq", "TermAck", "CodeRej",
     NULL, NULL, NULL, NULL, NULL, NULL,
     "ResetReq", "ResetAck",
 };
 
-int
+static int
 ccp_printpkt(p, plen, printer, arg)
     u_char *p;
     int plen;
@@ -881,6 +961,15 @@ ccp_printpkt(p, plen, printer, arg)
 	    printer(arg, ">");
 	}
 	break;
+
+    case TERMACK:
+    case TERMREQ:
+	if (len > 0 && *p >= ' ' && *p < 0x7f) {
+	    print_string(p, len, printer, arg);
+	    p += len;
+	    len = 0;
+	}
+	break;
     }
 
     /* dump out the rest of the packet in hex */