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debugging prints for quick mode errors

From: Timo Teras <timo.teras@iki.fi>


---

 src/racoon/isakmp.c       |   21 ++++++++++++++-------
 src/racoon/isakmp_quick.c |   46 ++++++++++++++++++++++++++++++++++++++-------
 2 files changed, 53 insertions(+), 14 deletions(-)


diff --git a/src/racoon/isakmp.c b/src/racoon/isakmp.c
index 2dfda2f..87ce598 100644
--- a/src/racoon/isakmp.c
+++ b/src/racoon/isakmp.c
@@ -817,7 +817,8 @@ ph1_main(iph1, msg)
 
 		if (iph1->side == RESPONDER && iph1->status == PHASE1ST_START) {
 			plog(LLV_ERROR, LOCATION, iph1->remote,
-				"failed to pre-process packet.\n");
+				"failed to pre-process ph1 packet (side: %d, status %d).\n",
+				iph1->side, iph1->status);
 			return -1;
 		} else {
 			/* ignore the error and keep phase 1 handler */
@@ -845,7 +846,8 @@ ph1_main(iph1, msg)
 			[iph1->side]
 			[iph1->status])(iph1, msg) != 0) {
 		plog(LLV_ERROR, LOCATION, iph1->remote,
-			"failed to process packet.\n");
+			"failed to process ph1 packet (side: %d, status: %d).\n",
+			iph1->side, iph1->status);
 		return -1;
 	}
 
@@ -997,7 +999,8 @@ quick_main(iph2, msg)
 			    [iph2->status])(iph2, msg);
 	if (error != 0) {
 		plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
-			"failed to pre-process packet.\n");
+			"failed to pre-process ph2 packet (side: %d, status %d).\n",
+			iph2->side, iph2->status);
 		if (error == ISAKMP_INTERNAL_ERROR)
 			return 0;
 		isakmp_info_send_n1(iph2->ph1, error, NULL);
@@ -1025,7 +1028,8 @@ quick_main(iph2, msg)
 			[iph2->side]
 			[iph2->status])(iph2, msg) != 0) {
 		plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
-			"failed to process packet.\n");
+			"failed to process ph2 packet (side: %d, status: %d).\n",
+			iph2->side, iph2->status);
 		return -1;
 	}
 
@@ -1233,7 +1237,8 @@ isakmp_ph1begin_r(msg, remote, local, etype)
 			[iph1->side]
 			[iph1->status])(iph1, msg) < 0) {
 		plog(LLV_ERROR, LOCATION, remote,
-			"failed to process packet.\n");
+			"failed to process ph1 packet (side: %d, status: %d).\n",
+			iph1->side, iph1->status);
 		remph1(iph1);
 		delph1(iph1);
 		return -1;
@@ -1386,7 +1391,8 @@ isakmp_ph2begin_r(iph1, msg)
 	                   [iph2->status])(iph2, msg);
 	if (error != 0) {
 		plog(LLV_ERROR, LOCATION, iph1->remote,
-			"failed to pre-process packet.\n");
+			"failed to pre-process ph2 packet (side: %d, status: %d).\n",
+			iph2->side, iph2->status);
 		if (error != ISAKMP_INTERNAL_ERROR)
 			isakmp_info_send_n1(iph2->ph1, error, NULL);
 		/*
@@ -1404,7 +1410,8 @@ isakmp_ph2begin_r(iph1, msg)
 			[iph2->side]
 			[iph2->status])(iph2, msg) < 0) {
 		plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
-			"failed to process packet.\n");
+			"failed to process ph2 packet (side: %d, status: %d).\n",
+			iph2->side, iph2->status);
 		/* don't release handler */
 		return -1;
 	}
diff --git a/src/racoon/isakmp_quick.c b/src/racoon/isakmp_quick.c
index 46c84c1..2657407 100644
--- a/src/racoon/isakmp_quick.c
+++ b/src/racoon/isakmp_quick.c
@@ -495,18 +495,27 @@ quick_i2recv(iph2, msg0)
 					"isn't supported.\n");
 				break;
 			}
-			if (isakmp_p2ph(&iph2->sa_ret, pa->ptr) < 0)
+			if (isakmp_p2ph(&iph2->sa_ret, pa->ptr) < 0) {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"duplicate ISAKMP_NPTYPE_SA.\n");
 				goto end;
+			}
 			break;
 
 		case ISAKMP_NPTYPE_NONCE:
-			if (isakmp_p2ph(&iph2->nonce_p, pa->ptr) < 0)
+			if (isakmp_p2ph(&iph2->nonce_p, pa->ptr) < 0) {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"duplicate ISAKMP_NPTYPE_NONCE.\n");
 				goto end;
+			}
 			break;
 
 		case ISAKMP_NPTYPE_KE:
-			if (isakmp_p2ph(&iph2->dhpub_p, pa->ptr) < 0)
+			if (isakmp_p2ph(&iph2->dhpub_p, pa->ptr) < 0) {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"duplicate ISAKMP_NPTYPE_KE.\n");
 				goto end;
+			}
 			break;
 
 		case ISAKMP_NPTYPE_ID:
@@ -517,6 +526,8 @@ quick_i2recv(iph2, msg0)
 				if (isakmp_p2ph(&idcr, pa->ptr) < 0)
 					goto end;
 			} else {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"too many ISAKMP_NPTYPE_ID payloads.\n");
 				goto end;
 			}
 			break;
@@ -557,6 +568,8 @@ quick_i2recv(iph2, msg0)
 				iph2->natoa_dst = daddr;
 			else {
 				racoon_free(daddr);
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"too many ISAKMP_NPTYPE_NATOA payloads.\n");
 				goto end;
 			}
 		    }
@@ -718,6 +731,8 @@ quick_i2recv(iph2, msg0)
 
 	/* validity check SA payload sent from responder */
 	if (ipsecdoi_checkph2proposal(iph2) < 0) {
+		plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+			"proposal check failed.\n");
 		error = ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN;
 		goto end;
 	}
@@ -1077,8 +1092,11 @@ quick_r1recv(iph2, msg0)
 	}
 	/* decrypt packet */
 	msg = oakley_do_decrypt(iph2->ph1, msg0, iph2->ivm->iv, iph2->ivm->ive);
-	if (msg == NULL)
+	if (msg == NULL) {
+		plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+			"Packet decryption failed.\n");
 		goto end;
+	}
 
 	/* create buffer for using to validate HASH(1) */
 	/*
@@ -1162,18 +1180,27 @@ quick_r1recv(iph2, msg0)
 					"Multi SAs isn't supported.\n");
 				goto end;
 			}
-			if (isakmp_p2ph(&iph2->sa, pa->ptr) < 0)
+			if (isakmp_p2ph(&iph2->sa, pa->ptr) < 0) {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"duplicate ISAKMP_NPTYPE_SA.\n");
 				goto end;
+			}
 			break;
 
 		case ISAKMP_NPTYPE_NONCE:
-			if (isakmp_p2ph(&iph2->nonce_p, pa->ptr) < 0)
+			if (isakmp_p2ph(&iph2->nonce_p, pa->ptr) < 0) {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"duplicate ISAKMP_NPTYPE_NONCE.\n");
 				goto end;
+			}
 			break;
 
 		case ISAKMP_NPTYPE_KE:
-			if (isakmp_p2ph(&iph2->dhpub_p, pa->ptr) < 0)
+			if (isakmp_p2ph(&iph2->dhpub_p, pa->ptr) < 0) {
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"duplicate ISAKMP_NPTYPE_KE.\n");
 				goto end;
+			}
 			break;
 
 		case ISAKMP_NPTYPE_ID:
@@ -1241,6 +1268,9 @@ quick_r1recv(iph2, msg0)
 				iph2->natoa_src = daddr;
 			else {
 				racoon_free(daddr);
+				plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+					"received too many NAT-OA payloads.\n");
+				error = ISAKMP_NTYPE_PAYLOAD_MALFORMED;
 				goto end;
 			}
 		    }
@@ -1333,6 +1363,8 @@ quick_r1recv(iph2, msg0)
 	case 0:
 		/* select single proposal or reject it. */
 		if (ipsecdoi_selectph2proposal(iph2) < 0) {
+			plog(LLV_ERROR, LOCATION, iph2->ph1->remote,
+				"no proposal chosen.\n");
 			error = ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN;
 			goto end;
 		}