CI: Add warning exemptions for Sun C (suncc-5.14) on Solaris 10

[tcpdump] / print-eap.c

diff --git a/print-eap.c b/print-eap.c
index 34712e2d04e21cf1fa794fbb15863e30423c8660..174f9c94704afb8ba67f3a5ddafa9b84e3b638bd 100644 (file)
--- a/print-eap.c
+++ b/print-eap.c
@@ -16,56 +16,299 @@
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

- *
- * Format and print bootp packets.

  */
 
  */
 

-#ifndef lint
-static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-eap.c,v 1.2 2004-04-05 22:35:36 guy Exp $";
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: Extensible Authentication Protocol (EAP) printer */

 
 

-#include <tcpdump-stdinc.h>
+#include <config.h>

 
 

-#include <stdio.h>
-#include <string.h>
+#include "netdissect-stdinc.h"

 
 

+#define ND_LONGJMP_FROM_TCHECK

 #include "netdissect.h"
 #include "netdissect.h"

-#include "addrtoname.h"

 #include "extract.h"
 #include "extract.h"

-#include "ether.h"

 
 

+#define        EAP_FRAME_TYPE_PACKET           0
+#define        EAP_FRAME_TYPE_START            1
+#define        EAP_FRAME_TYPE_LOGOFF           2
+#define        EAP_FRAME_TYPE_KEY              3
+#define        EAP_FRAME_TYPE_ENCAP_ASF_ALERT  4
+
+struct eap_frame_t {
+    nd_uint8_t  version;
+    nd_uint8_t  type;
+    nd_uint16_t length;
+};
+
+static const struct tok eap_frame_type_values[] = {
+    { EAP_FRAME_TYPE_PACKET,           "EAP packet" },
+    { EAP_FRAME_TYPE_START,            "EAPOL start" },
+    { EAP_FRAME_TYPE_LOGOFF,           "EAPOL logoff" },
+    { EAP_FRAME_TYPE_KEY,              "EAPOL key" },
+    { EAP_FRAME_TYPE_ENCAP_ASF_ALERT,  "Encapsulated ASF alert" },
+    { 0, NULL}
+};
+
+/* RFC 3748 */

 struct eap_packet_t {
 struct eap_packet_t {

-       unsigned char   code;
-       unsigned char   id;
-       unsigned char   length[2];
-       unsigned char   data[1];
+    nd_uint8_t  code;
+    nd_uint8_t  id;
+    nd_uint16_t length;
+};
+
+#define                EAP_REQUEST     1
+#define                EAP_RESPONSE    2
+#define                EAP_SUCCESS     3
+#define                EAP_FAILURE     4
+
+static const struct tok eap_code_values[] = {
+    { EAP_REQUEST,     "Request" },
+    { EAP_RESPONSE,    "Response" },
+    { EAP_SUCCESS,     "Success" },
+    { EAP_FAILURE,     "Failure" },
+    { 0, NULL}
+};
+
+#define                EAP_TYPE_NO_PROPOSED    0
+#define                EAP_TYPE_IDENTITY       1
+#define                EAP_TYPE_NOTIFICATION   2
+#define                EAP_TYPE_NAK            3
+#define                EAP_TYPE_MD5_CHALLENGE  4
+#define                EAP_TYPE_OTP            5
+#define                EAP_TYPE_GTC            6
+#define                EAP_TYPE_TLS            13              /* RFC 5216 */
+#define                EAP_TYPE_SIM            18              /* RFC 4186 */
+#define                EAP_TYPE_TTLS           21              /* RFC 5281, draft-funk-eap-ttls-v0-01.txt */
+#define                EAP_TYPE_AKA            23              /* RFC 4187 */
+#define                EAP_TYPE_FAST           43              /* RFC 4851 */
+#define                EAP_TYPE_EXPANDED_TYPES 254
+#define                EAP_TYPE_EXPERIMENTAL   255
+
+static const struct tok eap_type_values[] = {
+    { EAP_TYPE_NO_PROPOSED,    "No proposed" },
+    { EAP_TYPE_IDENTITY,       "Identity" },
+    { EAP_TYPE_NOTIFICATION,    "Notification" },
+    { EAP_TYPE_NAK,            "Nak" },
+    { EAP_TYPE_MD5_CHALLENGE,   "MD5-challenge" },
+    { EAP_TYPE_OTP,            "OTP" },
+    { EAP_TYPE_GTC,            "GTC" },
+    { EAP_TYPE_TLS,            "TLS" },
+    { EAP_TYPE_SIM,            "SIM" },
+    { EAP_TYPE_TTLS,           "TTLS" },
+    { EAP_TYPE_AKA,            "AKA" },
+    { EAP_TYPE_FAST,           "FAST" },
+    { EAP_TYPE_EXPANDED_TYPES,  "Expanded types" },
+    { EAP_TYPE_EXPERIMENTAL,    "Experimental" },
+    { 0, NULL}
+};
+
+#define EAP_TLS_EXTRACT_BIT_L(x)       (((x)&0x80)>>7)
+
+/* RFC 5216 - EAP TLS bits */
+#define EAP_TLS_FLAGS_LEN_INCLUDED             (1 << 7)
+#define EAP_TLS_FLAGS_MORE_FRAGMENTS           (1 << 6)
+#define EAP_TLS_FLAGS_START                    (1 << 5)
+
+static const struct tok eap_tls_flags_values[] = {
+       { EAP_TLS_FLAGS_LEN_INCLUDED, "L bit" },
+       { EAP_TLS_FLAGS_MORE_FRAGMENTS, "More fragments bit"},
+       { EAP_TLS_FLAGS_START, "Start bit"},
+       { 0, NULL}
+};
+
+#define EAP_TTLS_VERSION(x)            ((x)&0x07)
+
+/* EAP-AKA and EAP-SIM - RFC 4187 */
+#define EAP_AKA_CHALLENGE              1
+#define EAP_AKA_AUTH_REJECT            2
+#define EAP_AKA_SYNC_FAILURE           4
+#define EAP_AKA_IDENTITY               5
+#define EAP_SIM_START                  10
+#define EAP_SIM_CHALLENGE              11
+#define EAP_AKA_NOTIFICATION           12
+#define EAP_AKA_REAUTH                 13
+#define EAP_AKA_CLIENT_ERROR           14
+
+static const struct tok eap_aka_subtype_values[] = {
+    { EAP_AKA_CHALLENGE,       "Challenge" },
+    { EAP_AKA_AUTH_REJECT,     "Auth reject" },
+    { EAP_AKA_SYNC_FAILURE,    "Sync failure" },
+    { EAP_AKA_IDENTITY,                "Identity" },
+    { EAP_SIM_START,           "Start" },
+    { EAP_SIM_CHALLENGE,       "Challenge" },
+    { EAP_AKA_NOTIFICATION,    "Notification" },
+    { EAP_AKA_REAUTH,          "Reauth" },
+    { EAP_AKA_CLIENT_ERROR,    "Client error" },
+    { 0, NULL}

 };
 
 /*
 };
 
 /*

- * Print bootp requests
+ * Print EAP requests / responses

  */
 void
 eap_print(netdissect_options *ndo,
  */
 void
 eap_print(netdissect_options *ndo,

-         register const u_char *cp,
-         u_int length _U_)
+          const u_char *cp,
+          const u_int length)

 {
 {

-       const struct eap_packet_t *eap;
+    u_int type, subtype, len;
+    u_int count;
+    const char *sep;
+
+    ndo->ndo_protocol = "eap";
+    type = GET_U_1(cp);
+    len = GET_BE_U_2(cp + 2);
+    ND_ICHECK_U(len, <, 4);
+    if (len != length) {
+        /*
+         * Probably a fragment; in some cases the fragmentation might
+         * not put an EAP header on every packet, if reassembly can
+         * be done without that (e.g., fragmentation to make a message
+         * fit in multiple TLVs in a RADIUS packet).
+         */
+        ND_PRINT("EAP fragment?");
+        return;
+    }
+    ND_PRINT("%s (%u), id %u, len %u",
+            tok2str(eap_code_values, "unknown", type),
+            type,
+            GET_U_1((cp + 1)),
+            len);
+
+    ND_TCHECK_LEN(cp, len);
+
+    if (type == EAP_REQUEST || type == EAP_RESPONSE) {
+        /* RFC 3748 Section 4.1 */
+        ND_ICHECK_U(len, <, 5);
+        subtype = GET_U_1(cp + 4);
+        ND_PRINT("\n\t\t Type %s (%u)",
+                tok2str(eap_type_values, "unknown", subtype),
+                subtype);
+
+        switch (subtype) {
+            case EAP_TYPE_IDENTITY:
+                /* According to RFC 3748, the message is optional */
+                if (len > 5) {
+                    ND_PRINT(", Identity: ");
+                    nd_printjnp(ndo, cp + 5, len - 5);
+                }
+                break;
+
+            case EAP_TYPE_NOTIFICATION:
+                /* According to RFC 3748, there must be at least one octet of message */
+                ND_ICHECK_U(len, <, 6);
+                ND_PRINT(", Notification: ");
+                nd_printjnp(ndo, cp + 5, len - 5);
+                break;
+
+            case EAP_TYPE_NAK:
+                /*
+                 * one or more octets indicating
+                 * the desired authentication
+                 * type one octet per type
+                 */
+                ND_ICHECK_U(len, <, 6);
+                sep = "";
+                for (count = 5; count < len; count++) {
+                    ND_PRINT("%s %s (%u)", sep,
+                           tok2str(eap_type_values, "unknown", GET_U_1((cp + count))),
+                           GET_U_1(cp + count));
+                    sep = ",";
+                }
+                break;
+
+            case EAP_TYPE_TTLS:
+            case EAP_TYPE_TLS:
+                ND_ICHECK_U(len, <, 6);
+                if (subtype == EAP_TYPE_TTLS)
+                    ND_PRINT(" TTLSv%u",
+                           EAP_TTLS_VERSION(GET_U_1((cp + 5))));
+                ND_PRINT(" flags [%s] 0x%02x",
+                       bittok2str(eap_tls_flags_values, "none", GET_U_1((cp + 5))),
+                       GET_U_1(cp + 5));
+
+                if (EAP_TLS_EXTRACT_BIT_L(GET_U_1(cp + 5))) {
+                    ND_ICHECK_U(len, <, 10);
+                    ND_PRINT(", len %u", GET_BE_U_4(cp + 6));
+                }
+                break;
+
+            case EAP_TYPE_FAST:
+                ND_ICHECK_U(len, <, 6);
+                ND_PRINT(" FASTv%u",
+                       EAP_TTLS_VERSION(GET_U_1((cp + 5))));
+                ND_PRINT(" flags [%s] 0x%02x",
+                       bittok2str(eap_tls_flags_values, "none", GET_U_1((cp + 5))),
+                       GET_U_1(cp + 5));

 
 

-       eap = (const struct eap_packet_t *)cp;
-       ND_TCHECK(eap->data);
+                if (EAP_TLS_EXTRACT_BIT_L(GET_U_1(cp + 5))) {
+                    ND_ICHECK_U(len, <, 10);
+                    ND_PRINT(", len %u", GET_BE_U_4(cp + 6));
+                }

 
 

-        ND_PRINT("EAP code=%u id=%u length=%u ", 
-                eap->code, eap->id, (eap->length[0]<<8) + eap->length[1]);
+                /* FIXME - TLV attributes follow */
+                break;

 
 

-        if (!ndo->ndo_vflag)
-            return;
+            case EAP_TYPE_AKA:
+            case EAP_TYPE_SIM:
+                ND_ICHECK_U(len, <, 6);
+                ND_PRINT(" subtype [%s] 0x%02x",
+                       tok2str(eap_aka_subtype_values, "unknown", GET_U_1((cp + 5))),
+                       GET_U_1(cp + 5));

 
 

-trunc:
-       ;
+                /* FIXME - TLV attributes follow */
+                break;
+
+            case EAP_TYPE_MD5_CHALLENGE:
+            case EAP_TYPE_OTP:
+            case EAP_TYPE_GTC:
+            case EAP_TYPE_EXPANDED_TYPES:
+            case EAP_TYPE_EXPERIMENTAL:
+            default:
+                break;
+        }
+    }
+    return;
+
+invalid:
+    nd_print_invalid(ndo);

 }
 
 }
 

+void
+eapol_print(netdissect_options *ndo,
+            const u_char *cp)
+{
+    const struct eap_frame_t *eap;
+    u_int eap_type, eap_len;
+
+    ndo->ndo_protocol = "eap";
+    eap = (const struct eap_frame_t *)cp;
+    eap_type = GET_U_1(eap->type);
+
+    ND_PRINT("%s (%u) v%u, len %u",
+           tok2str(eap_frame_type_values, "unknown", eap_type),
+           eap_type,
+           GET_U_1(eap->version),
+           GET_BE_U_2(eap->length));
+    if (ndo->ndo_vflag < 1)
+        return;
+
+    cp += sizeof(struct eap_frame_t);
+    eap_len = GET_BE_U_2(eap->length);
+
+    switch (eap_type) {
+    case EAP_FRAME_TYPE_PACKET:
+        if (eap_len == 0)
+            goto invalid;
+        ND_PRINT(", ");
+        eap_print(ndo, cp, eap_len);
+        break;
+    case EAP_FRAME_TYPE_LOGOFF:
+    case EAP_FRAME_TYPE_ENCAP_ASF_ALERT:
+    default:
+        break;
+    }
+    return;
+
+invalid:
+    nd_print_invalid(ndo);
+}