X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/436ced3bd83f6b3a5b4a206538c56189837add59..61c422a88caefe986c2bc0a7f2f3028f696fa5cd:/print-babel.c diff --git a/print-babel.c b/print-babel.c index f4e62f34..49fb81de 100644 --- a/print-babel.c +++ b/print-babel.c @@ -26,6 +26,8 @@ * SUCH DAMAGE. */ +/* \summary: Babel Routing Protocol printer */ + #ifdef HAVE_CONFIG_H #include "config.h" #endif @@ -49,16 +51,16 @@ babel_print(netdissect_options *ndo, { ND_PRINT((ndo, "babel")); - ND_TCHECK2(*cp, 4); + ND_TCHECK_4(cp); if(cp[0] != 42) { ND_PRINT((ndo, " invalid header")); return; } else { - ND_PRINT((ndo, " %d", cp[1])); + ND_PRINT((ndo, " %d", EXTRACT_U_1(cp + 1))); } - switch(cp[1]) { + switch(EXTRACT_U_1(cp + 1)) { case 2: babel_print_v2(ndo, cp, length); break; @@ -110,7 +112,9 @@ format_id(const u_char *id) { static char buf[25]; snprintf(buf, 25, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", - id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]); + EXTRACT_U_1(id), EXTRACT_U_1(id + 1), EXTRACT_U_1(id + 2), + EXTRACT_U_1(id + 3), EXTRACT_U_1(id + 4), EXTRACT_U_1(id + 5), + EXTRACT_U_1(id + 6), EXTRACT_U_1(id + 7)); buf[24] = '\0'; return buf; } @@ -272,14 +276,16 @@ subtlvs_print(netdissect_options *ndo, uint32_t t1, t2; while (cp < ep) { - subtype = *cp++; + subtype = EXTRACT_U_1(cp); + cp++; if(subtype == MESSAGE_SUB_PAD1) { ND_PRINT((ndo, " sub-pad1")); continue; } if(cp == ep) goto invalid; - sublen = *cp++; + sublen = EXTRACT_U_1(cp); + cp++; if(cp + sublen > ep) goto invalid; @@ -296,7 +302,8 @@ subtlvs_print(netdissect_options *ndo, } sep = " "; while(sublen--) { - ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", *cp++))); + ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", EXTRACT_U_1(cp)))); + cp++; sep = "-"; } if(tlv_type != MESSAGE_UPDATE && @@ -308,14 +315,14 @@ subtlvs_print(netdissect_options *ndo, if(tlv_type == MESSAGE_HELLO) { if(sublen < 4) goto invalid; - t1 = EXTRACT_32BITS(cp); + t1 = EXTRACT_BE_U_4(cp); ND_PRINT((ndo, " %s", format_timestamp(t1))); } else if(tlv_type == MESSAGE_IHU) { if(sublen < 8) goto invalid; - t1 = EXTRACT_32BITS(cp); + t1 = EXTRACT_BE_U_4(cp); ND_PRINT((ndo, " %s", format_timestamp(t1))); - t2 = EXTRACT_32BITS(cp + 4); + t2 = EXTRACT_BE_U_4(cp + 4); ND_PRINT((ndo, "|%s", format_timestamp(t2))); } else ND_PRINT((ndo, " (bogus)")); @@ -345,10 +352,10 @@ babel_print_v2(netdissect_options *ndo, {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 }; u_char v6_prefix[16] = {0}; - ND_TCHECK2(*cp, 4); + ND_TCHECK_4(cp); if (length < 4) goto invalid; - bodylen = EXTRACT_16BITS(cp + 2); + bodylen = EXTRACT_BE_U_2(cp + 2); ND_PRINT((ndo, " (%u)", bodylen)); /* Process the TLVs in the body */ @@ -359,14 +366,14 @@ babel_print_v2(netdissect_options *ndo, message = cp + 4 + i; - ND_TCHECK2(*message, 1); - if((type = message[0]) == MESSAGE_PAD1) { + ND_TCHECK_1(message); + if((type = EXTRACT_U_1(message)) == MESSAGE_PAD1) { ND_PRINT((ndo, ndo->ndo_vflag ? "\n\tPad 1" : " pad1")); i += 1; continue; } - ND_TCHECK2(*message, 2); + ND_TCHECK_2(message); ICHECK(i, 2); len = message[1]; @@ -389,8 +396,8 @@ babel_print_v2(netdissect_options *ndo, else { ND_PRINT((ndo, "\n\tAcknowledgment Request ")); if(len < 6) goto invalid; - nonce = EXTRACT_16BITS(message + 4); - interval = EXTRACT_16BITS(message + 6); + nonce = EXTRACT_BE_U_2(message + 4); + interval = EXTRACT_BE_U_2(message + 6); ND_PRINT((ndo, "%04x %s", nonce, format_interval(interval))); } } @@ -403,7 +410,7 @@ babel_print_v2(netdissect_options *ndo, else { ND_PRINT((ndo, "\n\tAcknowledgment ")); if(len < 2) goto invalid; - nonce = EXTRACT_16BITS(message + 2); + nonce = EXTRACT_BE_U_2(message + 2); ND_PRINT((ndo, "%04x", nonce)); } } @@ -416,8 +423,8 @@ babel_print_v2(netdissect_options *ndo, else { ND_PRINT((ndo, "\n\tHello ")); if(len < 6) goto invalid; - seqno = EXTRACT_16BITS(message + 4); - interval = EXTRACT_16BITS(message + 6); + seqno = EXTRACT_BE_U_2(message + 4); + interval = EXTRACT_BE_U_2(message + 6); ND_PRINT((ndo, "seqno %u interval %s", seqno, format_interval(interval))); /* Extra data. */ if(len > 6) @@ -435,9 +442,10 @@ babel_print_v2(netdissect_options *ndo, int rc; ND_PRINT((ndo, "\n\tIHU ")); if(len < 6) goto invalid; - txcost = EXTRACT_16BITS(message + 4); - interval = EXTRACT_16BITS(message + 6); - rc = network_address(message[2], message + 8, len - 6, address); + txcost = EXTRACT_BE_U_2(message + 4); + interval = EXTRACT_BE_U_2(message + 6); + rc = network_address(EXTRACT_U_1(message + 2), message + 8, + len - 6, address); if(rc < 0) { ND_PRINT((ndo, "%s", tstr)); break; } ND_PRINT((ndo, "%s txcost %u interval %s", format_address(ndo, address), txcost, format_interval(interval))); @@ -468,7 +476,8 @@ babel_print_v2(netdissect_options *ndo, u_char nh[16]; ND_PRINT((ndo, "\n\tNext Hop")); if(len < 2) goto invalid; - rc = network_address(message[2], message + 4, len - 2, nh); + rc = network_address(EXTRACT_U_1(message + 2), message + 4, + len - 2, nh); if(rc < 0) goto invalid; ND_PRINT((ndo, " %s", format_address(ndo, nh))); } @@ -482,9 +491,9 @@ babel_print_v2(netdissect_options *ndo, ND_PRINT((ndo, "/truncated")); else ND_PRINT((ndo, "%s%s%s", - (message[3] & 0x80) ? "/prefix": "", - (message[3] & 0x40) ? "/id" : "", - (message[3] & 0x3f) ? "/unknown" : "")); + (EXTRACT_U_1(message + 3) & 0x80) ? "/prefix": "", + (EXTRACT_U_1(message + 3) & 0x40) ? "/id" : "", + (EXTRACT_U_1(message + 3) & 0x3f) ? "/unknown" : "")); } else { u_short interval, seqno, metric; u_char plen; @@ -493,21 +502,23 @@ babel_print_v2(netdissect_options *ndo, ND_PRINT((ndo, "\n\tUpdate")); if(len < 10) goto invalid; plen = message[4] + (message[2] == 1 ? 96 : 0); - rc = network_prefix(message[2], message[4], message[5], + rc = network_prefix(EXTRACT_U_1(message + 2), + EXTRACT_U_1(message + 4), + EXTRACT_U_1(message + 5), message + 12, message[2] == 1 ? v4_prefix : v6_prefix, len - 10, prefix); if(rc < 0) goto invalid; - interval = EXTRACT_16BITS(message + 6); - seqno = EXTRACT_16BITS(message + 8); - metric = EXTRACT_16BITS(message + 10); + interval = EXTRACT_BE_U_2(message + 6); + seqno = EXTRACT_BE_U_2(message + 8); + metric = EXTRACT_BE_U_2(message + 10); ND_PRINT((ndo, "%s%s%s %s metric %u seqno %u interval %s", - (message[3] & 0x80) ? "/prefix": "", - (message[3] & 0x40) ? "/id" : "", - (message[3] & 0x3f) ? "/unknown" : "", + (EXTRACT_U_1(message + 3) & 0x80) ? "/prefix": "", + (EXTRACT_U_1(message + 3) & 0x40) ? "/id" : "", + (EXTRACT_U_1(message + 3) & 0x3f) ? "/unknown" : "", format_prefix(ndo, prefix, plen), metric, seqno, format_interval_update(interval))); - if(message[3] & 0x80) { + if(EXTRACT_U_1(message + 3) & 0x80) { if(message[2] == 1) memcpy(v4_prefix, prefix, 16); else @@ -529,11 +540,12 @@ babel_print_v2(netdissect_options *ndo, ND_PRINT((ndo, "\n\tRequest ")); if(len < 2) goto invalid; plen = message[3] + (message[2] == 1 ? 96 : 0); - rc = network_prefix(message[2], message[3], 0, + rc = network_prefix(EXTRACT_U_1(message + 2), + EXTRACT_U_1(message + 3), 0, message + 4, NULL, len - 2, prefix); if(rc < 0) goto invalid; ND_PRINT((ndo, "for %s", - message[2] == 0 ? "any" : format_prefix(ndo, prefix, plen))); + EXTRACT_U_1(message + 2) == 0 ? "any" : format_prefix(ndo, prefix, plen))); } } break; @@ -547,13 +559,14 @@ babel_print_v2(netdissect_options *ndo, u_char prefix[16], plen; ND_PRINT((ndo, "\n\tMH-Request ")); if(len < 14) goto invalid; - seqno = EXTRACT_16BITS(message + 4); - rc = network_prefix(message[2], message[3], 0, + seqno = EXTRACT_BE_U_2(message + 4); + rc = network_prefix(EXTRACT_U_1(message + 2), + EXTRACT_U_1(message + 3), 0, message + 16, NULL, len - 14, prefix); if(rc < 0) goto invalid; plen = message[3] + (message[2] == 1 ? 96 : 0); ND_PRINT((ndo, "(%u hops) for %s seqno %u id %s", - message[6], format_prefix(ndo, prefix, plen), + EXTRACT_U_1(message + 6), format_prefix(ndo, prefix, plen), seqno, format_id(message + 8))); } } @@ -564,8 +577,8 @@ babel_print_v2(netdissect_options *ndo, else { ND_PRINT((ndo, "\n\tTS/PC ")); if(len < 6) goto invalid; - ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4), - EXTRACT_16BITS(message + 2))); + ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_BE_U_4(message + 4), + EXTRACT_BE_U_2(message + 2))); } break; case MESSAGE_HMAC : { @@ -575,9 +588,9 @@ babel_print_v2(netdissect_options *ndo, unsigned j; ND_PRINT((ndo, "\n\tHMAC ")); if(len < 18) goto invalid; - ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2)); + ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_BE_U_2(message + 2), len - 2)); for (j = 0; j < len - 2; j++) - ND_PRINT((ndo, "%02X", message[4 + j])); + ND_PRINT((ndo, "%02X", EXTRACT_U_1(message + j + 4))); } } break; @@ -597,9 +610,9 @@ babel_print_v2(netdissect_options *ndo, src_plen = message[3]; plen = message[4]; omitted = message[5]; - interval = EXTRACT_16BITS(message + 6); - seqno = EXTRACT_16BITS(message + 8); - metric = EXTRACT_16BITS(message + 10); + interval = EXTRACT_BE_U_2(message + 6); + seqno = EXTRACT_BE_U_2(message + 8); + metric = EXTRACT_BE_U_2(message + 10); rc = network_prefix(ae, plen, omitted, message + 2 + parsed_len, ae == 1 ? v4_prefix : v6_prefix, len - parsed_len, prefix); @@ -671,7 +684,7 @@ babel_print_v2(netdissect_options *ndo, if(len < 14) goto invalid; ae = message[2]; plen = message[3]; - seqno = EXTRACT_16BITS(message + 4); + seqno = EXTRACT_BE_U_2(message + 4); hopc = message[6]; src_plen = message[7]; router_id = message + 8;