Run correctly on a machine built without AF_INET6 support

6 files changed, 65 insertions, 33 deletions

diff --git a/usr.sbin/ppp/bundle.c b/usr.sbin/ppp/bundle.c
index adf5257..8f0863f 100644
--- a/usr.sbin/ppp/bundle.c
+++ b/usr.sbin/ppp/bundle.c
@@ -555,7 +555,7 @@ bundle_DescriptorRead(struct fdescriptor *d, struct bundle *bundle,
       }
       af = ntohl(tun.header.family);
 #ifndef NOINET6
-      if (af != AF_INET && af != AF_INET6)
+      if (af != AF_INET && (!probe.ipv6_available || af != AF_INET6))
 #else
       if (af != AF_INET)
 #endif
diff --git a/usr.sbin/ppp/command.c b/usr.sbin/ppp/command.c
index 2c79b89..d8515c0 100644
--- a/usr.sbin/ppp/command.c
+++ b/usr.sbin/ppp/command.c
@@ -460,15 +460,17 @@ command_Expand(char **nargv, int argc, char const *const *oargv,
     nargv[arg] = subst(nargv[arg], "HISADDR",
                        inet_ntoa(bundle->ncp.ipcp.peer_ip));
 #ifndef NOINET6
-    nargv[arg] = subst(nargv[arg], "HISADDR6",
-                       ncpaddr_ntoa(&bundle->ncp.ipv6cp.hisaddr));
+    if (probe.ipv6_available)
+      nargv[arg] = subst(nargv[arg], "HISADDR6",
+                         ncpaddr_ntoa(&bundle->ncp.ipv6cp.hisaddr));
 #endif
     nargv[arg] = subst(nargv[arg], "AUTHNAME", bundle->cfg.auth.name);
     nargv[arg] = subst(nargv[arg], "INTERFACE", bundle->iface->name);
     nargv[arg] = subst(nargv[arg], "MYADDR", inet_ntoa(bundle->ncp.ipcp.my_ip));
 #ifndef NOINET6
-    nargv[arg] = subst(nargv[arg], "MYADDR6",
-                       ncpaddr_ntoa(&bundle->ncp.ipv6cp.myaddr));
+    if (probe.ipv6_available)
+      nargv[arg] = subst(nargv[arg], "MYADDR6",
+                         ncpaddr_ntoa(&bundle->ncp.ipv6cp.myaddr));
 #endif
     nargv[arg] = subst(nargv[arg], "USER", bundle->ncp.mp.peer.authname);
     nargv[arg] = subst(nargv[arg], "PEER_ENDDISC",
@@ -2340,7 +2342,8 @@ AddCommand(struct cmdargs const *arg)
     ncpaddr_setip4(&gw, arg->bundle->ncp.ipcp.peer_ip);
     addrs |= ROUTE_GWHISADDR;
 #ifndef NOINET6
-  } else if (strcasecmp(arg->argv[arg->argn + gw_arg], "HISADDR6") == 0) {
+  } else if (probe.ipv6_available &&
+             strcasecmp(arg->argv[arg->argn + gw_arg], "HISADDR6") == 0) {
     ncpaddr_copy(&gw, &arg->bundle->ncp.ipv6cp.hisaddr);
     addrs |= ROUTE_GWHISADDR6;
 #endif
@@ -2379,7 +2382,8 @@ DeleteCommand(struct cmdargs const *arg)
         ncprange_setip4host(&dest, arg->bundle->ncp.ipcp.my_ip);
         addrs = ROUTE_DSTMYADDR;
 #ifndef NOINET6
-      } else if (strcasecmp(arg->argv[arg->argn], "MYADDR6") == 0) {
+      } else if (probe.ipv6_available &&
+                 strcasecmp(arg->argv[arg->argn], "MYADDR6") == 0) {
         ncprange_sethost(&dest, &arg->bundle->ncp.ipv6cp.myaddr);
         addrs = ROUTE_DSTMYADDR6;
 #endif
@@ -2387,7 +2391,8 @@ DeleteCommand(struct cmdargs const *arg)
         ncprange_setip4host(&dest, arg->bundle->ncp.ipcp.peer_ip);
         addrs = ROUTE_DSTHISADDR;
 #ifndef NOINET6
-      } else if (strcasecmp(arg->argv[arg->argn], "HISADDR6") == 0) {
+      } else if (probe.ipv6_available &&
+                 strcasecmp(arg->argv[arg->argn], "HISADDR6") == 0) {
         ncprange_sethost(&dest, &arg->bundle->ncp.ipv6cp.hisaddr);
         addrs = ROUTE_DSTHISADDR6;
 #endif
@@ -2872,8 +2877,11 @@ ClearCommand(struct cmdargs const *arg)
   } else if (strcasecmp(arg->argv[arg->argn], "ipcp") == 0)
     t = &arg->bundle->ncp.ipcp.throughput;
 #ifndef NOINET6
-  else if (strcasecmp(arg->argv[arg->argn], "ipv6cp") == 0)
+  else if (strcasecmp(arg->argv[arg->argn], "ipv6cp") == 0) {
+    if (!probe.ipv6_available)
+      return 0;
     t = &arg->bundle->ncp.ipv6cp.throughput;
+  }
 #endif
   else
     return -1;
@@ -3019,8 +3027,11 @@ IfaceClearCommand(struct cmdargs const *arg)
     if (strcasecmp(arg->argv[arg->argn], "inet") == 0)
       family = AF_INET;
 #ifndef NOINET6
-    else if (strcasecmp(arg->argv[arg->argn], "inet6") == 0)
+    else if (strcasecmp(arg->argv[arg->argn], "inet6") == 0) {
+      if (!probe.ipv6_available)
+        return 0;
       family = AF_INET6;
+    }
 #endif
     else
       return -1;
diff --git a/usr.sbin/ppp/fsm.c b/usr.sbin/ppp/fsm.c
index 47bcd68..9f4cc0c 100644
--- a/usr.sbin/ppp/fsm.c
+++ b/usr.sbin/ppp/fsm.c
@@ -68,6 +68,7 @@
 #include "async.h"
 #include "physical.h"
 #include "proto.h"
+#include "probe.h"
 
 static void FsmSendConfigReq(struct fsm *);
 static void FsmSendTerminateReq(struct fsm *);
@@ -896,7 +897,7 @@ FsmRecvProtoRej(struct fsm *fp, struct fsmheader *lhp, struct mbuf *bp)
     break;
 #ifndef NOINET6
   case PROTO_IPV6CP:
-    if (fp->proto == PROTO_LCP) {
+    if (probe.ipv6_available && fp->proto == PROTO_LCP) {
       log_Printf(LogPHASE, "%s: IPV6CP protocol reject closes IPV6CP !\n",
                 fp->link->name);
       fsm_Close(&fp->bundle->ncp.ipv6cp.fsm);
diff --git a/usr.sbin/ppp/ip.c b/usr.sbin/ppp/ip.c
index 30b6cb6..38f5ed2 100644
--- a/usr.sbin/ppp/ip.c
+++ b/usr.sbin/ppp/ip.c
@@ -79,6 +79,7 @@
 #include "ncp.h"
 #include "bundle.h"
 #include "tun.h"
+#include "probe.h"
 
 
 #define OPCODE_QUERY	0
@@ -941,7 +942,7 @@ ipv6_Input(struct bundle *bundle, struct link *l, struct mbuf *bp)
 {
   int nb;
 
-  if (bundle->ncp.ipv6cp.fsm.state != ST_OPENED) {
+  if (!probe.ipv6_available || bundle->ncp.ipv6cp.fsm.state != ST_OPENED) {
     log_Printf(LogWARN, "ipv6_Input: IPV6CP not open - packet dropped\n");
     m_freem(bp);
     return NULL;
diff --git a/usr.sbin/ppp/ipv6cp.c b/usr.sbin/ppp/ipv6cp.c
index 6ec1485..5067997 100644
--- a/usr.sbin/ppp/ipv6cp.c
+++ b/usr.sbin/ppp/ipv6cp.c
@@ -73,6 +73,7 @@
 #include "prompt.h"
 #include "async.h"
 #include "physical.h"
+#include "probe.h"
 
 
 #ifndef NOINET6
@@ -224,6 +225,11 @@ ipv6cp_Show(struct cmdargs const *arg)
 {
   struct ipv6cp *ipv6cp = &arg->bundle->ncp.ipv6cp;
 
+  if (!probe.ipv6_available) {
+    prompt_Printf(arg->prompt, "ipv6 not available\n");
+    return 0;
+  }
+
   prompt_Printf(arg->prompt, "%s [%s]\n", ipv6cp->fsm.name,
                 State2Nam(ipv6cp->fsm.state));
   if (ipv6cp->fsm.state == ST_OPENED) {
@@ -251,7 +257,7 @@ ipv6cp_Input(struct bundle *bundle, struct link *l, struct mbuf *bp)
 {
   /* Got PROTO_IPV6CP from link */
   m_settype(bp, MB_IPV6CPIN);
-  if (bundle_Phase(bundle) == PHASE_NETWORK)
+  if (bundle_Phase(bundle) == PHASE_NETWORK && probe.ipv6_available)
     fsm_Input(&bundle->ncp.ipv6cp.fsm, bp);
   else {
     if (bundle_Phase(bundle) < PHASE_NETWORK)
diff --git a/usr.sbin/ppp/ncp.c b/usr.sbin/ppp/ncp.c
index a68c91f..8a88800 100644
--- a/usr.sbin/ppp/ncp.c
+++ b/usr.sbin/ppp/ncp.c
@@ -90,6 +90,7 @@
 #include "pap.h"
 #include "cbcp.h"
 #include "datalink.h"
+#include "probe.h"
 
 
 static u_short default_urgent_tcp_ports[] = {
@@ -133,8 +134,9 @@ ncp_Init(struct ncp *ncp, struct bundle *bundle)
   ipcp_Init(&ncp->ipcp, bundle, &bundle->links->physical->link,
             &bundle->fsm);
 #ifndef NOINET6
-  ipv6cp_Init(&ncp->ipv6cp, bundle, &bundle->links->physical->link,
-              &bundle->fsm);
+  if (probe.ipv6_available)
+    ipv6cp_Init(&ncp->ipv6cp, bundle, &bundle->links->physical->link,
+                &bundle->fsm);
 #endif
 }
 
@@ -143,7 +145,8 @@ ncp_Destroy(struct ncp *ncp)
 {
   ipcp_Destroy(&ncp->ipcp);
 #ifndef NOINET6
-  ipv6cp_Destroy(&ncp->ipv6cp);
+  if (probe.ipv6_available)
+    ipv6cp_Destroy(&ncp->ipv6cp);
 #endif
 
   if (ncp->cfg.urgent.tcp.maxports) {
@@ -172,7 +175,7 @@ ncp_fsmStart(struct ncp *ncp, struct bundle *bundle)
 #ifndef NOINET6
   }
 
-  if (Enabled(bundle, OPT_IPV6CP)) {
+  if (probe.ipv6_available && Enabled(bundle, OPT_IPV6CP)) {
     fsm_Up(&ncp->ipv6cp.fsm);
     fsm_Open(&ncp->ipv6cp.fsm);
     res++;
@@ -209,7 +212,8 @@ ncp_SetLink(struct ncp *ncp, struct link *l)
 {
   ipcp_SetLink(&ncp->ipcp, l);
 #ifndef NOINET6
-  ipv6cp_SetLink(&ncp->ipv6cp, l);
+  if (probe.ipv6_available)
+    ipv6cp_SetLink(&ncp->ipv6cp, l);
 #endif
 }
 
@@ -277,7 +281,8 @@ ncp_QueueLen(struct ncp *ncp)
 
   result = ipcp_QueueLen(&ncp->ipcp);
 #ifndef NOINET6
-  result += ipv6cp_QueueLen(&ncp->ipv6cp);
+  if (probe.ipv6_available)
+    result += ipv6cp_QueueLen(&ncp->ipv6cp);
 #endif
   result += mp_QueueLen(&ncp->mp);	/* Usually empty */
 
@@ -304,9 +309,10 @@ ncp_DeleteQueues(struct ncp *ncp)
       m_freem(m_dequeue(q));
 
 #ifndef NOINET6
-  for (q = ipv6cp->Queue; q < ipv6cp->Queue + IPV6CP_QUEUES(ipv6cp); q++)
-    while (q->top)
-      m_freem(m_dequeue(q));
+  if (probe.ipv6_available)
+    for (q = ipv6cp->Queue; q < ipv6cp->Queue + IPV6CP_QUEUES(ipv6cp); q++)
+      while (q->top)
+        m_freem(m_dequeue(q));
 #endif
 
   link_DeleteQueue(&mp->link);	/* Usually empty anyway */
@@ -352,7 +358,9 @@ ncp_PushPacket(struct ncp *ncp, int *af, struct link *l)
   int res;
 
 #ifndef NOINET6
-  if (*af == AF_INET) {
+  if (!probe.ipv6_available)
+    res = ipcp_PushPacket(&bundle->ncp.ipcp, l);
+  else if (*af == AF_INET) {
     if ((res = ipcp_PushPacket(&bundle->ncp.ipcp, l)))
       *af = AF_INET6;
     else
@@ -448,8 +456,9 @@ ncp_Show(struct cmdargs const *arg)
   int p;
 
 #ifndef NOINET6
-  prompt_Printf(arg->prompt, "Next queued AF: %s\n",
-                ncp->afq == AF_INET6 ? "inet6" : "inet");
+  if (probe.ipv6_available)
+    prompt_Printf(arg->prompt, "Next queued AF: %s\n",
+                  ncp->afq == AF_INET6 ? "inet6" : "inet");
 #endif
 
   if (ncp->route) {
@@ -502,7 +511,8 @@ ncp_LayersOpen(struct ncp *ncp)
 
   n = !!(ncp->ipcp.fsm.state == ST_OPENED);
 #ifndef NOINET6
-  n += !!(ncp->ipv6cp.fsm.state == ST_OPENED);
+  if (probe.ipv6_available)
+    n += !!(ncp->ipv6cp.fsm.state == ST_OPENED);
 #endif
 
   return n;
@@ -518,9 +528,10 @@ ncp_LayersUnfinished(struct ncp *ncp)
     n++;
 
 #ifndef NOINET6
-  if (ncp->ipv6cp.fsm.state > ST_CLOSED ||
-      ncp->ipv6cp.fsm.state == ST_STARTING)
-    n++;
+  if (probe.ipv6_available)
+    if (ncp->ipv6cp.fsm.state > ST_CLOSED ||
+        ncp->ipv6cp.fsm.state == ST_STARTING)
+      n++;
 #endif
 
   return n;
@@ -534,9 +545,10 @@ ncp_Close(struct ncp *ncp)
     fsm_Close(&ncp->ipcp.fsm);
 
 #ifndef NOINET6
-  if (ncp->ipv6cp.fsm.state > ST_CLOSED ||
-      ncp->ipv6cp.fsm.state == ST_STARTING)
-    fsm_Close(&ncp->ipv6cp.fsm);
+  if (probe.ipv6_available)
+    if (ncp->ipv6cp.fsm.state > ST_CLOSED ||
+        ncp->ipv6cp.fsm.state == ST_STARTING)
+      fsm_Close(&ncp->ipv6cp.fsm);
 #endif
 }
 
@@ -545,6 +557,7 @@ ncp2initial(struct ncp *ncp)
 {
   fsm2initial(&ncp->ipcp.fsm);
 #ifndef NOINET6
-  fsm2initial(&ncp->ipv6cp.fsm);
+  if (probe.ipv6_available)
+    fsm2initial(&ncp->ipv6cp.fsm);
 #endif
 }