X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/1cfd6cd2ac8acecbcf16e083a6cd272a19ec994e..cc2d4cbd8ca150504127f375d8b51b194958d95b:/print-fr.c diff --git a/print-fr.c b/print-fr.c index 8c8bf781..8565dae5 100644 --- a/print-fr.c +++ b/print-fr.c @@ -22,10 +22,10 @@ /* \summary: Frame Relay printer */ #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif -#include +#include "netdissect-stdinc.h" #include #include @@ -98,9 +98,9 @@ static const struct tok frf_flag_values[] = { * 0 on invalid address, -1 on truncated packet * save the flags dep. on address length */ -static int parse_q922_addr(netdissect_options *ndo, +static int parse_q922_header(netdissect_options *ndo, const u_char *p, u_int *dlci, - u_int *addr_len, uint8_t *flags, u_int length) + u_int *addr_len, uint32_t *flags, u_int length) { if (!ND_TTEST_1(p) || length < 1) return -1; @@ -112,10 +112,8 @@ static int parse_q922_addr(netdissect_options *ndo, *addr_len = 2; *dlci = ((EXTRACT_U_1(p) & 0xFC) << 2) | ((EXTRACT_U_1(p + 1) & 0xF0) >> 4); - flags[0] = EXTRACT_U_1(p) & 0x02; /* populate the first flag fields */ - flags[1] = EXTRACT_U_1(p + 1) & 0x0c; - flags[2] = 0; /* clear the rest of the flags */ - flags[3] = 0; + *flags = ((EXTRACT_U_1(p) & 0x02) << 24) | /* CR flag */ + ((EXTRACT_U_1(p + 1) & 0x0e) << 16); /* FECN,BECN,DE flags */ if (EXTRACT_U_1(p + 1) & FR_EA_BIT) return 1; /* 2-byte Q.922 address */ @@ -137,24 +135,24 @@ static int parse_q922_addr(netdissect_options *ndo, if ((EXTRACT_U_1(p) & FR_EA_BIT) == 0) return 0; /* more than 4 bytes of Q.922 address? */ - flags[3] = EXTRACT_U_1(p) & 0x02; + *flags = *flags | (EXTRACT_U_1(p) & 0x02); /* SDLC flag */ *dlci = (*dlci << 6) | (EXTRACT_U_1(p) >> 2); return 1; } -char * +const char * q922_string(netdissect_options *ndo, const u_char *p, u_int length) { static u_int dlci, addr_len; - static uint8_t flags[4]; + static uint32_t flags; static char buffer[sizeof("DLCI xxxxxxxxxx")]; memset(buffer, 0, sizeof(buffer)); - if (parse_q922_addr(ndo, p, &dlci, &addr_len, flags, length) == 1){ - snprintf(buffer, sizeof(buffer), "DLCI %u", dlci); + if (parse_q922_header(ndo, p, &dlci, &addr_len, &flags, length) == 1){ + nd_snprintf(buffer, sizeof(buffer), "DLCI %u", dlci); } return buffer; @@ -188,54 +186,55 @@ q922_string(netdissect_options *ndo, const u_char *p, u_int length) */ static void -fr_hdr_print(netdissect_options *ndo, - int length, u_int addr_len, u_int dlci, uint8_t *flags, uint16_t nlpid) +fr_hdr_print(netdissect_options *ndo, int length, u_int addr_len, + u_int dlci, uint32_t flags, uint16_t nlpid) { if (ndo->ndo_qflag) { - ND_PRINT((ndo, "Q.922, DLCI %u, length %u: ", + ND_PRINT("Q.922, DLCI %u, length %u: ", dlci, - length)); + length); } else { if (nlpid <= 0xff) /* if its smaller than 256 then its a NLPID */ - ND_PRINT((ndo, "Q.922, hdr-len %u, DLCI %u, Flags [%s], NLPID %s (0x%02x), length %u: ", + ND_PRINT("Q.922, hdr-len %u, DLCI %u, Flags [%s], NLPID %s (0x%02x), length %u: ", addr_len, dlci, - bittok2str(fr_header_flag_values, "none", EXTRACT_BE_U_4(flags)), + bittok2str(fr_header_flag_values, "none", flags), tok2str(nlpid_values,"unknown", nlpid), nlpid, - length)); + length); else /* must be an ethertype */ - ND_PRINT((ndo, "Q.922, hdr-len %u, DLCI %u, Flags [%s], cisco-ethertype %s (0x%04x), length %u: ", + ND_PRINT("Q.922, hdr-len %u, DLCI %u, Flags [%s], cisco-ethertype %s (0x%04x), length %u: ", addr_len, dlci, - bittok2str(fr_header_flag_values, "none", EXTRACT_BE_U_4(flags)), + bittok2str(fr_header_flag_values, "none", flags), tok2str(ethertype_values, "unknown", nlpid), nlpid, - length)); + length); } } u_int fr_if_print(netdissect_options *ndo, - const struct pcap_pkthdr *h, register const u_char *p) + const struct pcap_pkthdr *h, const u_char *p) { - register u_int length = h->len; - register u_int caplen = h->caplen; + u_int length = h->len; + u_int caplen = h->caplen; + ndo->ndo_protocol = "fr_if"; ND_TCHECK_4(p); /* minimum frame header length */ if ((length = fr_print(ndo, p, length)) == 0) return (0); else return length; - trunc: - ND_PRINT((ndo, "[|fr]")); +trunc: + nd_print_trunc(ndo); return caplen; } u_int fr_print(netdissect_options *ndo, - register const u_char *p, u_int length) + const u_char *p, u_int length) { int ret; uint16_t extracted_ethertype; @@ -243,13 +242,14 @@ fr_print(netdissect_options *ndo, u_int addr_len; uint16_t nlpid; u_int hdr_len; - uint8_t flags[4]; + uint32_t flags; - ret = parse_q922_addr(ndo, p, &dlci, &addr_len, flags, length); + ndo->ndo_protocol = "fr"; + ret = parse_q922_header(ndo, p, &dlci, &addr_len, &flags, length); if (ret == -1) goto trunc; if (ret == 0) { - ND_PRINT((ndo, "Q.922, invalid address")); + ND_PRINT("Q.922, invalid address"); return 0; } @@ -265,7 +265,7 @@ fr_print(netdissect_options *ndo, */ if (!ND_TTEST_2(p + addr_len) || length < addr_len + 2) { /* no Ethertype */ - ND_PRINT((ndo, "UI %02x! ", EXTRACT_U_1(p + addr_len))); + ND_PRINT("UI %02x! ", EXTRACT_U_1(p + addr_len)); } else { extracted_ethertype = EXTRACT_BE_U_2(p + addr_len); @@ -279,7 +279,7 @@ fr_print(netdissect_options *ndo, ndo->ndo_snapend-p-addr_len-ETHERTYPE_LEN, NULL, NULL) == 0) /* ether_type not known, probably it wasn't one */ - ND_PRINT((ndo, "UI %02x! ", EXTRACT_U_1(p + addr_len))); + ND_PRINT("UI %02x! ", EXTRACT_U_1(p + addr_len)); else return addr_len + 2; } @@ -295,7 +295,7 @@ fr_print(netdissect_options *ndo, * A pad byte should only be used with 3-byte Q.922. */ if (addr_len != 3) - ND_PRINT((ndo, "Pad! ")); + ND_PRINT("Pad! "); hdr_len = addr_len + 1 /* UI */ + 1 /* pad */ + 1 /* NLPID */; } else { /* @@ -303,7 +303,7 @@ fr_print(netdissect_options *ndo, * A pad byte should be used with 3-byte Q.922. */ if (addr_len == 3) - ND_PRINT((ndo, "No pad! ")); + ND_PRINT("No pad! "); hdr_len = addr_len + 1 /* UI */ + 1 /* NLPID */; } @@ -365,27 +365,28 @@ fr_print(netdissect_options *ndo, return hdr_len; - trunc: - ND_PRINT((ndo, "[|fr]")); +trunc: + nd_print_trunc(ndo); return 0; } u_int mfr_if_print(netdissect_options *ndo, - const struct pcap_pkthdr *h, register const u_char *p) + const struct pcap_pkthdr *h, const u_char *p) { - register u_int length = h->len; - register u_int caplen = h->caplen; + u_int length = h->len; + u_int caplen = h->caplen; + ndo->ndo_protocol = "mfr_if"; ND_TCHECK_2(p); /* minimum frame header length */ if ((length = mfr_print(ndo, p, length)) == 0) return (0); else return length; - trunc: - ND_PRINT((ndo, "[|mfr]")); +trunc: + nd_print_trunc(ndo); return caplen; } @@ -435,7 +436,7 @@ struct ie_tlv_header_t { u_int mfr_print(netdissect_options *ndo, - register const u_char *p, u_int length) + const u_char *p, u_int length) { u_int tlen,idx,hdr_len = 0; uint16_t sequence_num; @@ -456,13 +457,14 @@ mfr_print(netdissect_options *ndo, * +----+----+----+----+----+----+----+----+ */ + ndo->ndo_protocol = "mfr"; ND_TCHECK_4(p); /* minimum frame header length */ if ((EXTRACT_U_1(p) & MFR_BEC_MASK) == MFR_CTRL_FRAME && EXTRACT_U_1(p + 1) == 0) { - ND_PRINT((ndo, "FRF.16 Control, Flags [%s], %s, length %u", + ND_PRINT("FRF.16 Control, Flags [%s], %s, length %u", bittok2str(frf_flag_values,"none",(EXTRACT_U_1(p) & MFR_BEC_MASK)), tok2str(mfr_ctrl_msg_values,"Unknown Message (0x%02x)",EXTRACT_U_1(p + 2)), - length)); + length); tptr = p + 3; tlen = length -3; hdr_len = 3; @@ -471,20 +473,20 @@ mfr_print(netdissect_options *ndo, return hdr_len; while (tlen>sizeof(struct ie_tlv_header_t)) { - ND_TCHECK2(*tptr, sizeof(struct ie_tlv_header_t)); - ie_type=tptr[0]; - ie_len=tptr[1]; + ND_TCHECK_LEN(tptr, sizeof(struct ie_tlv_header_t)); + ie_type=EXTRACT_U_1(tptr); + ie_len=EXTRACT_U_1(tptr + 1); - ND_PRINT((ndo, "\n\tIE %s (%u), length %u: ", + ND_PRINT("\n\tIE %s (%u), length %u: ", tok2str(mfr_ctrl_ie_values,"Unknown",ie_type), ie_type, - ie_len)); + ie_len); /* infinite loop check */ if (ie_type == 0 || ie_len <= sizeof(struct ie_tlv_header_t)) return hdr_len; - ND_TCHECK2(*tptr, ie_len); + ND_TCHECK_LEN(tptr, ie_len); tptr+=sizeof(struct ie_tlv_header_t); /* tlv len includes header */ ie_len-=sizeof(struct ie_tlv_header_t); @@ -493,14 +495,14 @@ mfr_print(netdissect_options *ndo, switch (ie_type) { case MFR_CTRL_IE_MAGIC_NUM: - ND_PRINT((ndo, "0x%08x", EXTRACT_BE_U_4(tptr))); + ND_PRINT("0x%08x", EXTRACT_BE_U_4(tptr)); break; case MFR_CTRL_IE_BUNDLE_ID: /* same message format */ case MFR_CTRL_IE_LINK_ID: for (idx = 0; idx < ie_len && idx < MFR_ID_STRING_MAXLEN; idx++) { if (EXTRACT_U_1(tptr + idx) != 0) /* don't print null termination */ - safeputchar(ndo, EXTRACT_U_1(tptr + idx)); + fn_print_char(ndo, EXTRACT_U_1(tptr + idx)); else break; } @@ -542,11 +544,11 @@ mfr_print(netdissect_options *ndo, * * 7 6 5 4 3 2 1 0 * +----+----+----+----+----+----+----+----+ - * | B | E | C=0|seq. (high 4 bits) | EA | + * | B | E | C=0|seq. (high 4 bits) | EA | * +----+----+----+----+----+----+----+----+ * | sequence (low 8 bits) | * +----+----+----+----+----+----+----+----+ - * | DLCI (6 bits) | CR | EA | + * | DLCI (6 bits) | CR | EA | * +----+----+----+----+----+----+----+----+ * | DLCI (4 bits) |FECN|BECN| DE | EA | * +----+----+----+----+----+----+----+----+ @@ -556,24 +558,24 @@ mfr_print(netdissect_options *ndo, /* whole packet or first fragment ? */ if ((EXTRACT_U_1(p) & MFR_BEC_MASK) == MFR_FRAG_FRAME || (EXTRACT_U_1(p) & MFR_BEC_MASK) == MFR_B_BIT) { - ND_PRINT((ndo, "FRF.16 Frag, seq %u, Flags [%s], ", + ND_PRINT("FRF.16 Frag, seq %u, Flags [%s], ", sequence_num, - bittok2str(frf_flag_values,"none",(EXTRACT_U_1(p) & MFR_BEC_MASK)))); + bittok2str(frf_flag_values,"none",(EXTRACT_U_1(p) & MFR_BEC_MASK))); hdr_len = 2; fr_print(ndo, p+hdr_len,length-hdr_len); return hdr_len; } /* must be a middle or the last fragment */ - ND_PRINT((ndo, "FRF.16 Frag, seq %u, Flags [%s]", + ND_PRINT("FRF.16 Frag, seq %u, Flags [%s]", sequence_num, - bittok2str(frf_flag_values,"none",(EXTRACT_U_1(p) & MFR_BEC_MASK)))); + bittok2str(frf_flag_values,"none",(EXTRACT_U_1(p) & MFR_BEC_MASK))); print_unknown_data(ndo, p, "\n\t", length); return hdr_len; - trunc: - ND_PRINT((ndo, "[|mfr]")); +trunc: + nd_print_trunc(ndo); return length; } @@ -607,11 +609,11 @@ frf15_print(netdissect_options *ndo, flags = EXTRACT_U_1(p)&MFR_BEC_MASK; sequence_num = (EXTRACT_U_1(p)&0x1e)<<7 | EXTRACT_U_1(p + 1); - ND_PRINT((ndo, "FRF.15, seq 0x%03x, Flags [%s],%s Fragmentation, length %u", + ND_PRINT("FRF.15, seq 0x%03x, Flags [%s],%s Fragmentation, length %u", sequence_num, bittok2str(frf_flag_values,"none",flags), EXTRACT_U_1(p)&FR_FRF15_FRAGTYPE ? "Interface" : "End-to-End", - length)); + length); /* TODO: * depending on all permutations of the B, E and C bit @@ -624,7 +626,7 @@ frf15_print(netdissect_options *ndo, return; trunc: - ND_PRINT((ndo, "[|frf.15]")); + nd_print_trunc(ndo); } /* @@ -800,12 +802,13 @@ q933_print(netdissect_options *ndo, u_int non_locking_shift; u_int unshift_codeset; - ND_PRINT((ndo, "%s", ndo->ndo_eflag ? "" : "Q.933")); + ndo->ndo_protocol = "q.933"; + ND_PRINT("%s", ndo->ndo_eflag ? "" : "Q.933"); - if (length == 0 || !ND_TTEST(*p)) { + if (length == 0 || !ND_TTEST_1(p)) { if (!ndo->ndo_eflag) - ND_PRINT((ndo, ", ")); - ND_PRINT((ndo, "length %u", length)); + ND_PRINT(", "); + ND_PRINT("length %u", length); goto trunc; } @@ -821,10 +824,10 @@ q933_print(netdissect_options *ndo, * Get the call reference value. */ for (i = 0; i < call_ref_length; i++) { - if (length == 0 || !ND_TTEST(*p)) { + if (length == 0 || !ND_TTEST_1(p)) { if (!ndo->ndo_eflag) - ND_PRINT((ndo, ", ")); - ND_PRINT((ndo, "length %u", olen)); + ND_PRINT(", "); + ND_PRINT("length %u", olen); goto trunc; } call_ref[i] = EXTRACT_U_1(p); @@ -835,10 +838,10 @@ q933_print(netdissect_options *ndo, /* * Get the message type. */ - if (length == 0 || !ND_TTEST(*p)) { + if (length == 0 || !ND_TTEST_1(p)) { if (!ndo->ndo_eflag) - ND_PRINT((ndo, ", ")); - ND_PRINT((ndo, "length %u", olen)); + ND_PRINT(", "); + ND_PRINT("length %u", olen); goto trunc; } msgtype = EXTRACT_U_1(p); @@ -851,10 +854,10 @@ q933_print(netdissect_options *ndo, non_locking_shift = 0; unshift_codeset = codeset; if (length != 0) { - if (!ND_TTEST(*p)) { + if (!ND_TTEST_1(p)) { if (!ndo->ndo_eflag) - ND_PRINT((ndo, ", ")); - ND_PRINT((ndo, "length %u", olen)); + ND_PRINT(", "); + ND_PRINT("length %u", olen); goto trunc; } iecode = EXTRACT_U_1(p); @@ -903,8 +906,8 @@ q933_print(netdissect_options *ndo, /* printing out header part */ if (!ndo->ndo_eflag) - ND_PRINT((ndo, ", ")); - ND_PRINT((ndo, "%s, codeset %u", is_ansi ? "ANSI" : "CCITT", codeset)); + ND_PRINT(", "); + ND_PRINT("%s, codeset %u", is_ansi ? "ANSI" : "CCITT", codeset); if (call_ref_length != 0) { ND_TCHECK_1(p); @@ -912,21 +915,21 @@ q933_print(netdissect_options *ndo, /* * Not a dummy call reference. */ - ND_PRINT((ndo, ", Call Ref: 0x")); + ND_PRINT(", Call Ref: 0x"); for (i = 0; i < call_ref_length; i++) - ND_PRINT((ndo, "%02x", call_ref[i])); + ND_PRINT("%02x", call_ref[i]); } } if (ndo->ndo_vflag) { - ND_PRINT((ndo, ", %s (0x%02x), length %u", + ND_PRINT(", %s (0x%02x), length %u", tok2str(fr_q933_msg_values, "unknown message", msgtype), msgtype, - olen)); + olen); } else { - ND_PRINT((ndo, ", %s", + ND_PRINT(", %s", tok2str(fr_q933_msg_values, - "unknown message 0x%02x", msgtype))); + "unknown message 0x%02x", msgtype)); } /* Loop through the rest of the IEs */ @@ -952,9 +955,9 @@ q933_print(netdissect_options *ndo, /* * Get the first octet of the IE. */ - if (!ND_TTEST(*p)) { + if (!ND_TTEST_1(p)) { if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", length %u", olen)); + ND_PRINT(", length %u", olen); } goto trunc; } @@ -995,9 +998,9 @@ q933_print(netdissect_options *ndo, /* * No. Get the IE length. */ - if (length == 0 || !ND_TTEST(*p)) { + if (length == 0 || !ND_TTEST_1(p)) { if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", length %u", olen)); + ND_PRINT(", length %u", olen); } goto trunc; } @@ -1009,20 +1012,20 @@ q933_print(netdissect_options *ndo, * however some IEs (DLCI Status, Link Verify) * are also interesting in non-verbose mode */ if (ndo->ndo_vflag) { - ND_PRINT((ndo, "\n\t%s IE (0x%02x), length %u: ", + ND_PRINT("\n\t%s IE (0x%02x), length %u: ", tok2str(fr_q933_ie_codesets[codeset], "unknown", iecode), iecode, - ielength)); + ielength); } /* sanity checks */ if (iecode == 0 || ielength == 0) { return; } - if (length < ielength || !ND_TTEST2(*p, ielength)) { + if (length < ielength || !ND_TTEST_LEN(p, ielength)) { if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", length %u", olen)); + ND_PRINT(", length %u", olen); } goto trunc; } @@ -1056,12 +1059,12 @@ q933_print(netdissect_options *ndo, } } if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", length %u", olen)); + ND_PRINT(", length %u", olen); } return; trunc: - ND_PRINT((ndo, "[|q.933]")); + nd_print_trunc(ndo); } static int @@ -1076,15 +1079,15 @@ fr_q933_print_ie_codeset_0_5(netdissect_options *ndo, u_int iecode, case FR_LMI_CCITT_REPORT_TYPE_IE: if (ielength < 1) { if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", ")); + ND_PRINT(", "); } - ND_PRINT((ndo, "Invalid REPORT TYPE IE")); + ND_PRINT("Invalid REPORT TYPE IE"); return 1; } if (ndo->ndo_vflag) { - ND_PRINT((ndo, "%s (%u)", + ND_PRINT("%s (%u)", tok2str(fr_lmi_report_type_ie_values,"unknown",EXTRACT_U_1(p)), - EXTRACT_U_1(p))); + EXTRACT_U_1(p)); } return 1; @@ -1092,19 +1095,19 @@ fr_q933_print_ie_codeset_0_5(netdissect_options *ndo, u_int iecode, case FR_LMI_CCITT_LINK_VERIFY_IE: case FR_LMI_ANSI_LINK_VERIFY_IE_91: if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", ")); + ND_PRINT(", "); } if (ielength < 2) { - ND_PRINT((ndo, "Invalid LINK VERIFY IE")); + ND_PRINT("Invalid LINK VERIFY IE"); return 1; } - ND_PRINT((ndo, "TX Seq: %3d, RX Seq: %3d", EXTRACT_U_1(p), EXTRACT_U_1(p + 1))); + ND_PRINT("TX Seq: %3d, RX Seq: %3d", EXTRACT_U_1(p), EXTRACT_U_1(p + 1)); return 1; case FR_LMI_ANSI_PVC_STATUS_IE: /* fall through */ case FR_LMI_CCITT_PVC_STATUS_IE: if (!ndo->ndo_vflag) { - ND_PRINT((ndo, ", ")); + ND_PRINT(", "); } /* now parse the DLCI information element. */ if ((ielength < 3) || @@ -1117,7 +1120,7 @@ fr_q933_print_ie_codeset_0_5(netdissect_options *ndo, u_int iecode, !(EXTRACT_U_1(p + 3) & 0x80))) || (ielength > 5) || !(EXTRACT_U_1(p + ielength - 1) & 0x80)) { - ND_PRINT((ndo, "Invalid DLCI in PVC STATUS IE")); + ND_PRINT("Invalid DLCI in PVC STATUS IE"); return 1; } @@ -1129,17 +1132,11 @@ fr_q933_print_ie_codeset_0_5(netdissect_options *ndo, u_int iecode, dlci = (dlci << 13) | (EXTRACT_U_1(p + 2) & 0x7F) | ((EXTRACT_U_1(p + 3) & 0x7E) >> 1); } - ND_PRINT((ndo, "DLCI %u: status %s%s", dlci, + ND_PRINT("DLCI %u: status %s%s", dlci, EXTRACT_U_1(p + ielength - 1) & 0x8 ? "New, " : "", - EXTRACT_U_1(p + ielength - 1) & 0x2 ? "Active" : "Inactive")); + EXTRACT_U_1(p + ielength - 1) & 0x2 ? "Active" : "Inactive"); return 1; } return 0; } -/* - * Local Variables: - * c-style: whitesmith - * c-basic-offset: 8 - * End: - */