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659 lines
16 KiB
659 lines
16 KiB
/* |
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* Copyright (C) Arnaldo Carvalho de Melo 2004 |
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* Copyright (C) Ian McDonald 2005 |
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* Copyright (C) Yoshifumi Nishida 2005 |
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* |
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* This software may be distributed either under the terms of the |
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* BSD-style license that accompanies tcpdump or the GNU GPL version 2 |
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*/ |
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|
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/* \summary: Datagram Congestion Control Protocol (DCCP) printer */ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <netdissect-stdinc.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include "netdissect.h" |
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#include "addrtoname.h" |
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#include "extract.h" |
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#include "ip.h" |
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#include "ip6.h" |
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#include "ipproto.h" |
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/* RFC4340: Datagram Congestion Control Protocol (DCCP) */ |
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/** |
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* struct dccp_hdr - generic part of DCCP packet header, with a 24-bit |
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* sequence number |
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* |
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* @dccph_sport - Relevant port on the endpoint that sent this packet |
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* @dccph_dport - Relevant port on the other endpoint |
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* @dccph_doff - Data Offset from the start of the DCCP header, in 32-bit words |
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* @dccph_ccval - Used by the HC-Sender CCID |
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* @dccph_cscov - Parts of the packet that are covered by the Checksum field |
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* @dccph_checksum - Internet checksum, depends on dccph_cscov |
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* @dccph_x - 0 = 24 bit sequence number, 1 = 48 |
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* @dccph_type - packet type, see DCCP_PKT_ prefixed macros |
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* @dccph_seq - 24-bit sequence number |
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*/ |
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struct dccp_hdr { |
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uint16_t dccph_sport, |
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dccph_dport; |
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uint8_t dccph_doff; |
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uint8_t dccph_ccval_cscov; |
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uint16_t dccph_checksum; |
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uint8_t dccph_xtr; |
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uint8_t dccph_seq[3]; |
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} UNALIGNED; |
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/** |
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* struct dccp_hdr_ext - generic part of DCCP packet header, with a 48-bit |
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* sequence number |
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* |
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* @dccph_sport - Relevant port on the endpoint that sent this packet |
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* @dccph_dport - Relevant port on the other endpoint |
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* @dccph_doff - Data Offset from the start of the DCCP header, in 32-bit words |
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* @dccph_ccval - Used by the HC-Sender CCID |
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* @dccph_cscov - Parts of the packet that are covered by the Checksum field |
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* @dccph_checksum - Internet checksum, depends on dccph_cscov |
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* @dccph_x - 0 = 24 bit sequence number, 1 = 48 |
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* @dccph_type - packet type, see DCCP_PKT_ prefixed macros |
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* @dccph_seq - 48-bit sequence number |
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*/ |
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struct dccp_hdr_ext { |
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uint16_t dccph_sport, |
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dccph_dport; |
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uint8_t dccph_doff; |
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uint8_t dccph_ccval_cscov; |
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uint16_t dccph_checksum; |
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uint8_t dccph_xtr; |
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uint8_t reserved; |
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uint8_t dccph_seq[6]; |
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} UNALIGNED; |
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#define DCCPH_CCVAL(dh) (((dh)->dccph_ccval_cscov >> 4) & 0xF) |
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#define DCCPH_CSCOV(dh) (((dh)->dccph_ccval_cscov) & 0xF) |
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#define DCCPH_X(dh) ((dh)->dccph_xtr & 1) |
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#define DCCPH_TYPE(dh) (((dh)->dccph_xtr >> 1) & 0xF) |
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/** |
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* struct dccp_hdr_request - Conection initiation request header |
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* |
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* @dccph_req_service - Service to which the client app wants to connect |
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*/ |
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struct dccp_hdr_request { |
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uint32_t dccph_req_service; |
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} UNALIGNED; |
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/** |
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* struct dccp_hdr_response - Conection initiation response header |
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* |
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* @dccph_resp_ack - 48 bit ack number, contains GSR |
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* @dccph_resp_service - Echoes the Service Code on a received DCCP-Request |
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*/ |
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struct dccp_hdr_response { |
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uint8_t dccph_resp_ack[8]; /* always 8 bytes */ |
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uint32_t dccph_resp_service; |
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} UNALIGNED; |
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/** |
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* struct dccp_hdr_reset - Unconditionally shut down a connection |
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* |
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* @dccph_resp_ack - 48 bit ack number |
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* @dccph_reset_service - Echoes the Service Code on a received DCCP-Request |
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*/ |
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struct dccp_hdr_reset { |
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uint8_t dccph_reset_ack[8]; /* always 8 bytes */ |
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uint8_t dccph_reset_code, |
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dccph_reset_data[3]; |
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} UNALIGNED; |
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enum dccp_pkt_type { |
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DCCP_PKT_REQUEST = 0, |
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DCCP_PKT_RESPONSE, |
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DCCP_PKT_DATA, |
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DCCP_PKT_ACK, |
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DCCP_PKT_DATAACK, |
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DCCP_PKT_CLOSEREQ, |
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DCCP_PKT_CLOSE, |
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DCCP_PKT_RESET, |
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DCCP_PKT_SYNC, |
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DCCP_PKT_SYNCACK |
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}; |
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static const struct tok dccp_pkt_type_str[] = { |
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{ DCCP_PKT_REQUEST, "DCCP-Request" }, |
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{ DCCP_PKT_RESPONSE, "DCCP-Response" }, |
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{ DCCP_PKT_DATA, "DCCP-Data" }, |
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{ DCCP_PKT_ACK, "DCCP-Ack" }, |
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{ DCCP_PKT_DATAACK, "DCCP-DataAck" }, |
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{ DCCP_PKT_CLOSEREQ, "DCCP-CloseReq" }, |
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{ DCCP_PKT_CLOSE, "DCCP-Close" }, |
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{ DCCP_PKT_RESET, "DCCP-Reset" }, |
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{ DCCP_PKT_SYNC, "DCCP-Sync" }, |
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{ DCCP_PKT_SYNCACK, "DCCP-SyncAck" }, |
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{ 0, NULL} |
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}; |
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enum dccp_reset_codes { |
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DCCP_RESET_CODE_UNSPECIFIED = 0, |
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DCCP_RESET_CODE_CLOSED, |
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DCCP_RESET_CODE_ABORTED, |
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DCCP_RESET_CODE_NO_CONNECTION, |
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DCCP_RESET_CODE_PACKET_ERROR, |
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DCCP_RESET_CODE_OPTION_ERROR, |
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DCCP_RESET_CODE_MANDATORY_ERROR, |
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DCCP_RESET_CODE_CONNECTION_REFUSED, |
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DCCP_RESET_CODE_BAD_SERVICE_CODE, |
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DCCP_RESET_CODE_TOO_BUSY, |
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DCCP_RESET_CODE_BAD_INIT_COOKIE, |
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DCCP_RESET_CODE_AGGRESSION_PENALTY, |
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__DCCP_RESET_CODE_LAST |
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}; |
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static const char tstr[] = "[|dccp]"; |
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static const char *dccp_reset_codes[] = { |
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"unspecified", |
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"closed", |
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"aborted", |
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"no_connection", |
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"packet_error", |
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"option_error", |
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"mandatory_error", |
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"connection_refused", |
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"bad_service_code", |
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"too_busy", |
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"bad_init_cookie", |
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"aggression_penalty", |
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}; |
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static const char *dccp_feature_nums[] = { |
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"reserved", |
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"ccid", |
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"allow_short_seqno", |
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"sequence_window", |
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"ecn_incapable", |
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"ack_ratio", |
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"send_ack_vector", |
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"send_ndp_count", |
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"minimum checksum coverage", |
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"check data checksum", |
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}; |
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static inline u_int dccp_csum_coverage(const struct dccp_hdr* dh, u_int len) |
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{ |
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u_int cov; |
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if (DCCPH_CSCOV(dh) == 0) |
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return len; |
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cov = (dh->dccph_doff + DCCPH_CSCOV(dh) - 1) * sizeof(uint32_t); |
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return (cov > len)? len : cov; |
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} |
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static int dccp_cksum(netdissect_options *ndo, const struct ip *ip, |
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const struct dccp_hdr *dh, u_int len) |
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{ |
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return nextproto4_cksum(ndo, ip, (const uint8_t *)(const void *)dh, len, |
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dccp_csum_coverage(dh, len), IPPROTO_DCCP); |
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} |
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static int dccp6_cksum(netdissect_options *ndo, const struct ip6_hdr *ip6, |
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const struct dccp_hdr *dh, u_int len) |
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{ |
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return nextproto6_cksum(ndo, ip6, (const uint8_t *)(const void *)dh, len, |
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dccp_csum_coverage(dh, len), IPPROTO_DCCP); |
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} |
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static const char *dccp_reset_code(uint8_t code) |
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{ |
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if (code >= __DCCP_RESET_CODE_LAST) |
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return "invalid"; |
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return dccp_reset_codes[code]; |
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} |
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static uint64_t dccp_seqno(const u_char *bp) |
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{ |
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const struct dccp_hdr *dh = (const struct dccp_hdr *)bp; |
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uint64_t seqno; |
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if (DCCPH_X(dh) != 0) { |
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const struct dccp_hdr_ext *dhx = (const struct dccp_hdr_ext *)bp; |
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seqno = EXTRACT_48BITS(dhx->dccph_seq); |
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} else { |
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seqno = EXTRACT_24BITS(dh->dccph_seq); |
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} |
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return seqno; |
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} |
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static inline unsigned int dccp_basic_hdr_len(const struct dccp_hdr *dh) |
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{ |
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return DCCPH_X(dh) ? sizeof(struct dccp_hdr_ext) : sizeof(struct dccp_hdr); |
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} |
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static void dccp_print_ack_no(netdissect_options *ndo, const u_char *bp) |
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{ |
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const struct dccp_hdr *dh = (const struct dccp_hdr *)bp; |
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const u_char *ackp = bp + dccp_basic_hdr_len(dh); |
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uint64_t ackno; |
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if (DCCPH_X(dh) != 0) { |
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ND_TCHECK2(*ackp, 8); |
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ackno = EXTRACT_48BITS(ackp + 2); |
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} else { |
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ND_TCHECK2(*ackp, 4); |
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ackno = EXTRACT_24BITS(ackp + 1); |
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} |
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ND_PRINT((ndo, "(ack=%" PRIu64 ") ", ackno)); |
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trunc: |
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return; |
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} |
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static int dccp_print_option(netdissect_options *, const u_char *, u_int); |
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/** |
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* dccp_print - show dccp packet |
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* @bp - beginning of dccp packet |
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* @data2 - beginning of enclosing |
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* @len - lenght of ip packet |
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*/ |
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void dccp_print(netdissect_options *ndo, const u_char *bp, const u_char *data2, |
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u_int len) |
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{ |
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const struct dccp_hdr *dh; |
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const struct ip *ip; |
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const struct ip6_hdr *ip6; |
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const u_char *cp; |
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u_short sport, dport; |
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u_int hlen; |
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u_int fixed_hdrlen; |
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uint8_t dccph_type; |
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dh = (const struct dccp_hdr *)bp; |
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ip = (const struct ip *)data2; |
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if (IP_V(ip) == 6) |
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ip6 = (const struct ip6_hdr *)data2; |
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else |
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ip6 = NULL; |
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/* make sure we have enough data to look at the X bit */ |
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cp = (const u_char *)(dh + 1); |
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if (cp > ndo->ndo_snapend) { |
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ND_PRINT((ndo, "[Invalid packet|dccp]")); |
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return; |
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} |
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if (len < sizeof(struct dccp_hdr)) { |
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ND_PRINT((ndo, "truncated-dccp - %u bytes missing!", |
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len - (u_int)sizeof(struct dccp_hdr))); |
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return; |
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} |
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/* get the length of the generic header */ |
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fixed_hdrlen = dccp_basic_hdr_len(dh); |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-dccp - %u bytes missing!", |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_TCHECK2(*dh, fixed_hdrlen); |
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sport = EXTRACT_16BITS(&dh->dccph_sport); |
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dport = EXTRACT_16BITS(&dh->dccph_dport); |
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hlen = dh->dccph_doff * 4; |
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if (ip6) { |
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ND_PRINT((ndo, "%s.%d > %s.%d: ", |
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ip6addr_string(ndo, &ip6->ip6_src), sport, |
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ip6addr_string(ndo, &ip6->ip6_dst), dport)); |
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} else { |
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ND_PRINT((ndo, "%s.%d > %s.%d: ", |
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ipaddr_string(ndo, &ip->ip_src), sport, |
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ipaddr_string(ndo, &ip->ip_dst), dport)); |
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} |
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ND_PRINT((ndo, "DCCP")); |
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if (ndo->ndo_qflag) { |
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ND_PRINT((ndo, " %d", len - hlen)); |
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if (hlen > len) { |
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ND_PRINT((ndo, " [bad hdr length %u - too long, > %u]", |
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hlen, len)); |
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} |
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return; |
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} |
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/* other variables in generic header */ |
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if (ndo->ndo_vflag) { |
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ND_PRINT((ndo, " (CCVal %d, CsCov %d, ", DCCPH_CCVAL(dh), DCCPH_CSCOV(dh))); |
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} |
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/* checksum calculation */ |
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if (ndo->ndo_vflag && ND_TTEST2(bp[0], len)) { |
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uint16_t sum = 0, dccp_sum; |
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dccp_sum = EXTRACT_16BITS(&dh->dccph_checksum); |
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ND_PRINT((ndo, "cksum 0x%04x ", dccp_sum)); |
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if (IP_V(ip) == 4) |
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sum = dccp_cksum(ndo, ip, dh, len); |
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else if (IP_V(ip) == 6) |
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sum = dccp6_cksum(ndo, ip6, dh, len); |
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if (sum != 0) |
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ND_PRINT((ndo, "(incorrect -> 0x%04x)",in_cksum_shouldbe(dccp_sum, sum))); |
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else |
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ND_PRINT((ndo, "(correct)")); |
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} |
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if (ndo->ndo_vflag) |
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ND_PRINT((ndo, ")")); |
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ND_PRINT((ndo, " ")); |
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dccph_type = DCCPH_TYPE(dh); |
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switch (dccph_type) { |
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case DCCP_PKT_REQUEST: { |
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const struct dccp_hdr_request *dhr = |
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(const struct dccp_hdr_request *)(bp + fixed_hdrlen); |
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fixed_hdrlen += 4; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_TCHECK(*dhr); |
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ND_PRINT((ndo, "%s (service=%d) ", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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EXTRACT_32BITS(&dhr->dccph_req_service))); |
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break; |
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} |
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case DCCP_PKT_RESPONSE: { |
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const struct dccp_hdr_response *dhr = |
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(const struct dccp_hdr_response *)(bp + fixed_hdrlen); |
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fixed_hdrlen += 12; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_TCHECK(*dhr); |
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ND_PRINT((ndo, "%s (service=%d) ", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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EXTRACT_32BITS(&dhr->dccph_resp_service))); |
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break; |
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} |
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case DCCP_PKT_DATA: |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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case DCCP_PKT_ACK: { |
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fixed_hdrlen += 8; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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} |
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case DCCP_PKT_DATAACK: { |
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fixed_hdrlen += 8; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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} |
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case DCCP_PKT_CLOSEREQ: |
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fixed_hdrlen += 8; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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case DCCP_PKT_CLOSE: |
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fixed_hdrlen += 8; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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case DCCP_PKT_RESET: { |
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const struct dccp_hdr_reset *dhr = |
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(const struct dccp_hdr_reset *)(bp + fixed_hdrlen); |
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fixed_hdrlen += 12; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_TCHECK(*dhr); |
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ND_PRINT((ndo, "%s (code=%s) ", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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dccp_reset_code(dhr->dccph_reset_code))); |
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break; |
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} |
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case DCCP_PKT_SYNC: |
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fixed_hdrlen += 8; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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case DCCP_PKT_SYNCACK: |
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fixed_hdrlen += 8; |
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if (len < fixed_hdrlen) { |
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ND_PRINT((ndo, "truncated-%s - %u bytes missing!", |
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tok2str(dccp_pkt_type_str, "", dccph_type), |
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len - fixed_hdrlen)); |
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return; |
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} |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "", dccph_type))); |
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break; |
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default: |
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ND_PRINT((ndo, "%s ", tok2str(dccp_pkt_type_str, "unknown-type-%u", dccph_type))); |
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break; |
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} |
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|
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if ((DCCPH_TYPE(dh) != DCCP_PKT_DATA) && |
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(DCCPH_TYPE(dh) != DCCP_PKT_REQUEST)) |
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dccp_print_ack_no(ndo, bp); |
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|
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if (ndo->ndo_vflag < 2) |
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return; |
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|
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ND_PRINT((ndo, "seq %" PRIu64, dccp_seqno(bp))); |
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|
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/* process options */ |
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if (hlen > fixed_hdrlen){ |
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u_int optlen; |
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cp = bp + fixed_hdrlen; |
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ND_PRINT((ndo, " <")); |
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|
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hlen -= fixed_hdrlen; |
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while(1){ |
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optlen = dccp_print_option(ndo, cp, hlen); |
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if (!optlen) |
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break; |
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if (hlen <= optlen) |
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break; |
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hlen -= optlen; |
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cp += optlen; |
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ND_PRINT((ndo, ", ")); |
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} |
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ND_PRINT((ndo, ">")); |
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} |
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return; |
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trunc: |
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ND_PRINT((ndo, "%s", tstr)); |
|
return; |
|
} |
|
|
|
static const struct tok dccp_option_values[] = { |
|
{ 0, "nop" }, |
|
{ 1, "mandatory" }, |
|
{ 2, "slowreceiver" }, |
|
{ 32, "change_l" }, |
|
{ 33, "confirm_l" }, |
|
{ 34, "change_r" }, |
|
{ 35, "confirm_r" }, |
|
{ 36, "initcookie" }, |
|
{ 37, "ndp_count" }, |
|
{ 38, "ack_vector0" }, |
|
{ 39, "ack_vector1" }, |
|
{ 40, "data_dropped" }, |
|
{ 41, "timestamp" }, |
|
{ 42, "timestamp_echo" }, |
|
{ 43, "elapsed_time" }, |
|
{ 44, "data_checksum" }, |
|
{ 0, NULL } |
|
}; |
|
|
|
static int dccp_print_option(netdissect_options *ndo, const u_char *option, u_int hlen) |
|
{ |
|
uint8_t optlen, i; |
|
|
|
ND_TCHECK(*option); |
|
|
|
if (*option >= 32) { |
|
ND_TCHECK(*(option+1)); |
|
optlen = *(option +1); |
|
if (optlen < 2) { |
|
if (*option >= 128) |
|
ND_PRINT((ndo, "CCID option %u optlen too short", *option)); |
|
else |
|
ND_PRINT((ndo, "%s optlen too short", |
|
tok2str(dccp_option_values, "Option %u", *option))); |
|
return 0; |
|
} |
|
} else |
|
optlen = 1; |
|
|
|
if (hlen < optlen) { |
|
if (*option >= 128) |
|
ND_PRINT((ndo, "CCID option %u optlen goes past header length", |
|
*option)); |
|
else |
|
ND_PRINT((ndo, "%s optlen goes past header length", |
|
tok2str(dccp_option_values, "Option %u", *option))); |
|
return 0; |
|
} |
|
ND_TCHECK2(*option, optlen); |
|
|
|
if (*option >= 128) { |
|
ND_PRINT((ndo, "CCID option %d", *option)); |
|
switch (optlen) { |
|
case 4: |
|
ND_PRINT((ndo, " %u", EXTRACT_16BITS(option + 2))); |
|
break; |
|
case 6: |
|
ND_PRINT((ndo, " %u", EXTRACT_32BITS(option + 2))); |
|
break; |
|
default: |
|
break; |
|
} |
|
} else { |
|
ND_PRINT((ndo, "%s", tok2str(dccp_option_values, "Option %u", *option))); |
|
switch (*option) { |
|
case 32: |
|
case 33: |
|
case 34: |
|
case 35: |
|
if (optlen < 3) { |
|
ND_PRINT((ndo, " optlen too short")); |
|
return optlen; |
|
} |
|
if (*(option + 2) < 10){ |
|
ND_PRINT((ndo, " %s", dccp_feature_nums[*(option + 2)])); |
|
for (i = 0; i < optlen - 3; i++) |
|
ND_PRINT((ndo, " %d", *(option + 3 + i))); |
|
} |
|
break; |
|
case 36: |
|
if (optlen > 2) { |
|
ND_PRINT((ndo, " 0x")); |
|
for (i = 0; i < optlen - 2; i++) |
|
ND_PRINT((ndo, "%02x", *(option + 2 + i))); |
|
} |
|
break; |
|
case 37: |
|
for (i = 0; i < optlen - 2; i++) |
|
ND_PRINT((ndo, " %d", *(option + 2 + i))); |
|
break; |
|
case 38: |
|
if (optlen > 2) { |
|
ND_PRINT((ndo, " 0x")); |
|
for (i = 0; i < optlen - 2; i++) |
|
ND_PRINT((ndo, "%02x", *(option + 2 + i))); |
|
} |
|
break; |
|
case 39: |
|
if (optlen > 2) { |
|
ND_PRINT((ndo, " 0x")); |
|
for (i = 0; i < optlen - 2; i++) |
|
ND_PRINT((ndo, "%02x", *(option + 2 + i))); |
|
} |
|
break; |
|
case 40: |
|
if (optlen > 2) { |
|
ND_PRINT((ndo, " 0x")); |
|
for (i = 0; i < optlen - 2; i++) |
|
ND_PRINT((ndo, "%02x", *(option + 2 + i))); |
|
} |
|
break; |
|
case 41: |
|
if (optlen == 4) |
|
ND_PRINT((ndo, " %u", EXTRACT_32BITS(option + 2))); |
|
else |
|
ND_PRINT((ndo, " optlen != 4")); |
|
break; |
|
case 42: |
|
if (optlen == 4) |
|
ND_PRINT((ndo, " %u", EXTRACT_32BITS(option + 2))); |
|
else |
|
ND_PRINT((ndo, " optlen != 4")); |
|
break; |
|
case 43: |
|
if (optlen == 6) |
|
ND_PRINT((ndo, " %u", EXTRACT_32BITS(option + 2))); |
|
else if (optlen == 4) |
|
ND_PRINT((ndo, " %u", EXTRACT_16BITS(option + 2))); |
|
else |
|
ND_PRINT((ndo, " optlen != 4 or 6")); |
|
break; |
|
case 44: |
|
if (optlen > 2) { |
|
ND_PRINT((ndo, " ")); |
|
for (i = 0; i < optlen - 2; i++) |
|
ND_PRINT((ndo, "%02x", *(option + 2 + i))); |
|
} |
|
break; |
|
} |
|
} |
|
|
|
return optlen; |
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
return 0; |
|
}
|
|
|