X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/dc81f22b9b7cb08bfda8d0d12979a0459814d8ae..HEAD:/print.c diff --git a/print.c b/print.c index 9ee88eb1..f67597e3 100644 --- a/print.c +++ b/print.c @@ -25,12 +25,11 @@ * Seth Webster */ -#ifdef HAVE_CONFIG_H #include -#endif #include #include +#include #include "netdissect-stdinc.h" @@ -39,77 +38,28 @@ #include "print.h" #include "netdissect-alloc.h" -#include "pcap-missing.h" - struct printer { if_printer f; int type; }; static const struct printer printers[] = { - { ether_if_print, DLT_EN10MB }, -#ifdef DLT_IPNET - { ipnet_if_print, DLT_IPNET }, -#endif -#ifdef DLT_IEEE802_15_4 - { ieee802_15_4_if_print, DLT_IEEE802_15_4 }, -#endif -#ifdef DLT_IEEE802_15_4_NOFCS - { ieee802_15_4_if_print, DLT_IEEE802_15_4_NOFCS }, -#endif -#ifdef DLT_PPI - { ppi_if_print, DLT_PPI }, -#endif -#ifdef DLT_NETANALYZER - { netanalyzer_if_print, DLT_NETANALYZER }, -#endif -#ifdef DLT_NETANALYZER_TRANSPARENT - { netanalyzer_transparent_if_print, DLT_NETANALYZER_TRANSPARENT }, -#endif -#ifdef DLT_NFLOG - { nflog_if_print, DLT_NFLOG}, -#endif -#ifdef DLT_CIP - { cip_if_print, DLT_CIP }, -#endif -#ifdef DLT_ATM_CLIP - { cip_if_print, DLT_ATM_CLIP }, -#endif -#ifdef DLT_IP_OVER_FC - { ipfc_if_print, DLT_IP_OVER_FC }, -#endif - { null_if_print, DLT_NULL }, -#ifdef DLT_LOOP - { null_if_print, DLT_LOOP }, -#endif #ifdef DLT_APPLE_IP_OVER_IEEE1394 { ap1394_if_print, DLT_APPLE_IP_OVER_IEEE1394 }, -#endif -#ifdef DLT_BLUETOOTH_HCI_H4_WITH_PHDR - { bt_if_print, DLT_BLUETOOTH_HCI_H4_WITH_PHDR}, -#endif -#ifdef DLT_LANE8023 - { lane_if_print, DLT_LANE8023 }, #endif { arcnet_if_print, DLT_ARCNET }, #ifdef DLT_ARCNET_LINUX { arcnet_linux_if_print, DLT_ARCNET_LINUX }, #endif - { raw_if_print, DLT_RAW }, -#ifdef DLT_IPV4 - { raw_if_print, DLT_IPV4 }, + { atm_if_print, DLT_ATM_RFC1483 }, +#ifdef DLT_DSA_TAG_BRCM + { brcm_tag_if_print, DLT_DSA_TAG_BRCM }, #endif -#ifdef DLT_IPV6 - { raw_if_print, DLT_IPV6 }, +#ifdef DLT_DSA_TAG_BRCM_PREPEND + { brcm_tag_prepend_if_print, DLT_DSA_TAG_BRCM_PREPEND }, #endif -#ifdef DLT_USB_LINUX - { usb_linux_48_byte_if_print, DLT_USB_LINUX}, -#endif /* DLT_USB_LINUX */ -#ifdef DLT_USB_LINUX_MMAPPED - { usb_linux_64_byte_if_print, DLT_USB_LINUX_MMAPPED}, -#endif /* DLT_USB_LINUX_MMAPPED */ -#ifdef DLT_SYMANTEC_FIREWALL - { symantec_if_print, DLT_SYMANTEC_FIREWALL }, +#ifdef DLT_BLUETOOTH_HCI_H4_WITH_PHDR + { bt_if_print, DLT_BLUETOOTH_HCI_H4_WITH_PHDR}, #endif #ifdef DLT_C_HDLC { chdlc_if_print, DLT_C_HDLC }, @@ -117,42 +67,55 @@ static const struct printer printers[] = { #ifdef DLT_HDLC { chdlc_if_print, DLT_HDLC }, #endif -#ifdef DLT_PPP_ETHER - { pppoe_if_print, DLT_PPP_ETHER }, +#ifdef DLT_ATM_CLIP + { cip_if_print, DLT_ATM_CLIP }, #endif -#if defined(DLT_PFLOG) && defined(HAVE_NET_IF_PFLOG_H) - { pflog_if_print, DLT_PFLOG }, +#ifdef DLT_CIP + { cip_if_print, DLT_CIP }, #endif - { token_if_print, DLT_IEEE802 }, - { fddi_if_print, DLT_FDDI }, -#ifdef DLT_LINUX_SLL - { sll_if_print, DLT_LINUX_SLL }, +#ifdef DLT_DSA_TAG_DSA + { dsa_if_print, DLT_DSA_TAG_DSA }, #endif -#ifdef DLT_LINUX_SLL2 - { sll2_if_print, DLT_LINUX_SLL2 }, +#ifdef DLT_DSA_TAG_EDSA + { edsa_if_print, DLT_DSA_TAG_EDSA }, +#endif +#ifdef DLT_ENC + { enc_if_print, DLT_ENC }, #endif + { ether_if_print, DLT_EN10MB }, + { fddi_if_print, DLT_FDDI }, #ifdef DLT_FR { fr_if_print, DLT_FR }, #endif #ifdef DLT_FRELAY { fr_if_print, DLT_FRELAY }, #endif -#ifdef DLT_MFR - { mfr_if_print, DLT_MFR }, +#ifdef DLT_IEEE802_11 + { ieee802_11_if_print, DLT_IEEE802_11}, #endif - { atm_if_print, DLT_ATM_RFC1483 }, -#ifdef DLT_SUNATM - { sunatm_if_print, DLT_SUNATM }, +#ifdef DLT_IEEE802_11_RADIO_AVS + { ieee802_11_radio_avs_if_print, DLT_IEEE802_11_RADIO_AVS }, #endif -#ifdef DLT_ENC - { enc_if_print, DLT_ENC }, +#ifdef DLT_IEEE802_11_RADIO + { ieee802_11_radio_if_print, DLT_IEEE802_11_RADIO }, #endif - { sl_if_print, DLT_SLIP }, -#ifdef DLT_SLIP_BSDOS - { sl_bsdos_if_print, DLT_SLIP_BSDOS }, +#ifdef DLT_IEEE802_15_4 + { ieee802_15_4_if_print, DLT_IEEE802_15_4 }, #endif -#ifdef DLT_LTALK - { ltalk_if_print, DLT_LTALK }, +#ifdef DLT_IEEE802_15_4_NOFCS + { ieee802_15_4_if_print, DLT_IEEE802_15_4_NOFCS }, +#endif +#ifdef DLT_IEEE802_15_4_TAP + { ieee802_15_4_tap_if_print, DLT_IEEE802_15_4_TAP }, +#endif +#ifdef DLT_IP_OVER_FC + { ipfc_if_print, DLT_IP_OVER_FC }, +#endif +#ifdef DLT_IPNET + { ipnet_if_print, DLT_IPNET }, +#endif +#ifdef DLT_IPOIB + { ipoib_if_print, DLT_IPOIB }, #endif #ifdef DLT_JUNIPER_ATM1 { juniper_atm1_if_print, DLT_JUNIPER_ATM1 }, @@ -160,6 +123,21 @@ static const struct printer printers[] = { #ifdef DLT_JUNIPER_ATM2 { juniper_atm2_if_print, DLT_JUNIPER_ATM2 }, #endif +#ifdef DLT_JUNIPER_CHDLC + { juniper_chdlc_if_print, DLT_JUNIPER_CHDLC }, +#endif +#ifdef DLT_JUNIPER_ES + { juniper_es_if_print, DLT_JUNIPER_ES }, +#endif +#ifdef DLT_JUNIPER_ETHER + { juniper_ether_if_print, DLT_JUNIPER_ETHER }, +#endif +#ifdef DLT_JUNIPER_FRELAY + { juniper_frelay_if_print, DLT_JUNIPER_FRELAY }, +#endif +#ifdef DLT_JUNIPER_GGSN + { juniper_ggsn_if_print, DLT_JUNIPER_GGSN }, +#endif #ifdef DLT_JUNIPER_MFR { juniper_mfr_if_print, DLT_JUNIPER_MFR }, #endif @@ -169,91 +147,103 @@ static const struct printer printers[] = { #ifdef DLT_JUNIPER_MLPPP { juniper_mlppp_if_print, DLT_JUNIPER_MLPPP }, #endif -#ifdef DLT_JUNIPER_PPPOE - { juniper_pppoe_if_print, DLT_JUNIPER_PPPOE }, +#ifdef DLT_JUNIPER_MONITOR + { juniper_monitor_if_print, DLT_JUNIPER_MONITOR }, +#endif +#ifdef DLT_JUNIPER_PPP + { juniper_ppp_if_print, DLT_JUNIPER_PPP }, #endif #ifdef DLT_JUNIPER_PPPOE_ATM { juniper_pppoe_atm_if_print, DLT_JUNIPER_PPPOE_ATM }, #endif -#ifdef DLT_JUNIPER_GGSN - { juniper_ggsn_if_print, DLT_JUNIPER_GGSN }, -#endif -#ifdef DLT_JUNIPER_ES - { juniper_es_if_print, DLT_JUNIPER_ES }, -#endif -#ifdef DLT_JUNIPER_MONITOR - { juniper_monitor_if_print, DLT_JUNIPER_MONITOR }, +#ifdef DLT_JUNIPER_PPPOE + { juniper_pppoe_if_print, DLT_JUNIPER_PPPOE }, #endif #ifdef DLT_JUNIPER_SERVICES { juniper_services_if_print, DLT_JUNIPER_SERVICES }, #endif -#ifdef DLT_JUNIPER_ETHER - { juniper_ether_if_print, DLT_JUNIPER_ETHER }, +#ifdef DLT_LTALK + { ltalk_if_print, DLT_LTALK }, #endif -#ifdef DLT_JUNIPER_PPP - { juniper_ppp_if_print, DLT_JUNIPER_PPP }, +#ifdef DLT_MFR + { mfr_if_print, DLT_MFR }, #endif -#ifdef DLT_JUNIPER_FRELAY - { juniper_frelay_if_print, DLT_JUNIPER_FRELAY }, +#ifdef DLT_NETANALYZER + { netanalyzer_if_print, DLT_NETANALYZER }, #endif -#ifdef DLT_JUNIPER_CHDLC - { juniper_chdlc_if_print, DLT_JUNIPER_CHDLC }, +#ifdef DLT_NETANALYZER_TRANSPARENT + { netanalyzer_transparent_if_print, DLT_NETANALYZER_TRANSPARENT }, +#endif +#ifdef DLT_NFLOG + { nflog_if_print, DLT_NFLOG}, +#endif + { null_if_print, DLT_NULL }, +#ifdef DLT_LOOP + { null_if_print, DLT_LOOP }, +#endif +#ifdef DLT_PFLOG + { pflog_if_print, DLT_PFLOG }, #endif #ifdef DLT_PKTAP { pktap_if_print, DLT_PKTAP }, #endif -#ifdef DLT_IEEE802_11_RADIO - { ieee802_11_radio_if_print, DLT_IEEE802_11_RADIO }, +#ifdef DLT_PPI + { ppi_if_print, DLT_PPI }, #endif -#ifdef DLT_IEEE802_11 - { ieee802_11_if_print, DLT_IEEE802_11}, +#ifdef DLT_PPP_SERIAL + { ppp_hdlc_if_print, DLT_PPP_SERIAL }, #endif -#ifdef DLT_IEEE802_11_RADIO_AVS - { ieee802_11_radio_avs_if_print, DLT_IEEE802_11_RADIO_AVS }, + { ppp_if_print, DLT_PPP }, +#ifdef DLT_PPP_PPPD + { ppp_if_print, DLT_PPP_PPPD }, +#endif +#ifdef DLT_PPP_ETHER + { pppoe_if_print, DLT_PPP_ETHER }, #endif #ifdef DLT_PRISM_HEADER { prism_if_print, DLT_PRISM_HEADER }, #endif - { ppp_if_print, DLT_PPP }, -#ifdef DLT_PPP_WITHDIRECTION - { ppp_if_print, DLT_PPP_WITHDIRECTION }, + { raw_if_print, DLT_RAW }, +#ifdef DLT_IPV4 + { raw_if_print, DLT_IPV4 }, #endif -#ifdef DLT_PPP_BSDOS - { ppp_bsdos_if_print, DLT_PPP_BSDOS }, +#ifdef DLT_IPV6 + { raw_if_print, DLT_IPV6 }, #endif -#ifdef DLT_PPP_SERIAL - { ppp_hdlc_if_print, DLT_PPP_SERIAL }, +#ifdef DLT_SLIP_BSDOS + { sl_bsdos_if_print, DLT_SLIP_BSDOS }, #endif -#ifdef DLT_DSA_TAG_BRCM - { brcm_tag_if_print, DLT_DSA_TAG_BRCM }, + { sl_if_print, DLT_SLIP }, +#ifdef DLT_LINUX_SLL + { sll_if_print, DLT_LINUX_SLL }, #endif -#ifdef DLT_DSA_TAG_BRCM_PREPEND - { brcm_tag_prepend_if_print, DLT_DSA_TAG_BRCM_PREPEND }, +#ifdef DLT_LINUX_SLL2 + { sll2_if_print, DLT_LINUX_SLL2 }, +#endif +#ifdef DLT_SUNATM + { sunatm_if_print, DLT_SUNATM }, +#endif +#ifdef DLT_SYMANTEC_FIREWALL + { symantec_if_print, DLT_SYMANTEC_FIREWALL }, #endif - { NULL, 0 }, + { token_if_print, DLT_IEEE802 }, +#ifdef DLT_USB_LINUX + { usb_linux_48_byte_if_print, DLT_USB_LINUX}, +#endif /* DLT_USB_LINUX */ +#ifdef DLT_USB_LINUX_MMAPPED + { usb_linux_64_byte_if_print, DLT_USB_LINUX_MMAPPED}, +#endif /* DLT_USB_LINUX_MMAPPED */ +#ifdef DLT_VSOCK + { vsock_if_print, DLT_VSOCK }, +#endif + { NULL, 0 }, }; -static void ndo_default_print(netdissect_options *ndo, const u_char *bp, - u_int length); - -static void NORETURN ndo_error(netdissect_options *ndo, - status_exit_codes_t status, - FORMAT_STRING(const char *fmt), ...) - PRINTFLIKE(3, 4); -static void ndo_warning(netdissect_options *ndo, - FORMAT_STRING(const char *fmt), ...) - PRINTFLIKE(2, 3); - -static int ndo_printf(netdissect_options *ndo, - FORMAT_STRING(const char *fmt), ...) - PRINTFLIKE(2, 3); - +// Both localnet and mask are in network byte order. void init_print(netdissect_options *ndo, uint32_t localnet, uint32_t mask) { - init_addrtoname(ndo, localnet, mask); - init_checksum(); } if_printer @@ -300,35 +290,42 @@ has_printer(int type) } if_printer -get_if_printer(netdissect_options *ndo, int type) +get_if_printer(int type) { - const char *dltname; if_printer printer; printer = lookup_printer(type); - if (printer == NULL) { - dltname = pcap_datalink_val_to_name(type); - if (dltname != NULL) - (*ndo->ndo_error)(ndo, S_ERR_ND_NO_PRINTER, - "packet printing is not supported for link type %s: use -w", - dltname); - else - (*ndo->ndo_error)(ndo, S_ERR_ND_NO_PRINTER, - "packet printing is not supported for link type %d: use -w", type); - } + if (printer == NULL) + printer = unsupported_if_print; return printer; } +#ifdef ENABLE_INSTRUMENT_FUNCTIONS +extern int profile_func_level; +static int pretty_print_packet_level = -1; +#endif + void pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *sp, u_int packets_captured) { - u_int hdrlen; + u_int hdrlen = 0; int invalid_header = 0; + if (ndo->ndo_print_sampling && packets_captured % ndo->ndo_print_sampling != 0) + return; + +#ifdef ENABLE_INSTRUMENT_FUNCTIONS + if (pretty_print_packet_level == -1) + pretty_print_packet_level = profile_func_level; +#endif + if (ndo->ndo_packet_number) ND_PRINT("%5u ", packets_captured); + if (ndo->ndo_lengths) + ND_PRINT("caplen %u len %u ", h->caplen, h->len); + /* Sanity checks on packet length / capture length */ if (h->caplen == 0) { invalid_header = 1; @@ -382,7 +379,16 @@ pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h, * bigger lengths. */ - ts_print(ndo, &h->ts); + /* + * The header /usr/include/pcap/pcap.h in OpenBSD declares h->ts as + * struct bpf_timeval, not struct timeval. The former comes from + * /usr/include/net/bpf.h and uses 32-bit unsigned types instead of + * the types used in struct timeval. + */ + struct timeval tvbuf; + tvbuf.tv_sec = h->ts.tv_sec; + tvbuf.tv_usec = h->ts.tv_usec; + ts_print(ndo, &tvbuf); /* * Printers must check that they're not walking off the end of @@ -391,14 +397,45 @@ pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h, * of the netdissect_options structure. */ ndo->ndo_snapend = sp + h->caplen; + ndo->ndo_packetp = sp; + + ndo->ndo_protocol = ""; + ndo->ndo_ll_hdr_len = 0; + switch (setjmp(ndo->ndo_early_end)) { + case 0: + /* Print the packet. */ + (ndo->ndo_if_printer)(ndo, h, sp); + break; + case ND_TRUNCATED: + /* A printer quit because the packet was truncated; report it */ + nd_print_trunc(ndo); + /* Print the full packet */ + ndo->ndo_ll_hdr_len = 0; +#ifdef ENABLE_INSTRUMENT_FUNCTIONS + /* truncation => reassignment */ + profile_func_level = pretty_print_packet_level; +#endif + break; + } + hdrlen = ndo->ndo_ll_hdr_len; - hdrlen = (ndo->ndo_if_printer)(ndo, h, sp); + /* + * Empty the stack of packet information, freeing all pushed buffers; + * if we got here by a printer quitting, we need to release anything + * that didn't get released because we longjmped out of the code + * before it popped the packet information. + */ + nd_pop_all_packet_info(ndo); /* - * Restore the original snapend, as a printer might have - * changed it. + * Restore the originals snapend and packetp, as a printer + * might have changed them. + * + * XXX - nd_pop_all_packet_info() should have restored the + * original values, but, just in case.... */ ndo->ndo_snapend = sp + h->caplen; + ndo->ndo_packetp = sp; if (ndo->ndo_Xflag) { /* * Print the raw packet data in hex and ASCII. @@ -471,9 +508,9 @@ ndo_default_print(netdissect_options *ndo, const u_char *bp, u_int length) } /* VARARGS */ -static void +static void NORETURN PRINTFLIKE(3, 4) ndo_error(netdissect_options *ndo, status_exit_codes_t status, - const char *fmt, ...) + FORMAT_STRING(const char *fmt), ...) { va_list ap; @@ -493,8 +530,8 @@ ndo_error(netdissect_options *ndo, status_exit_codes_t status, } /* VARARGS */ -static void -ndo_warning(netdissect_options *ndo, const char *fmt, ...) +static void PRINTFLIKE(2, 3) +ndo_warning(netdissect_options *ndo, FORMAT_STRING(const char *fmt), ...) { va_list ap; @@ -511,8 +548,9 @@ ndo_warning(netdissect_options *ndo, const char *fmt, ...) } } -static int -ndo_printf(netdissect_options *ndo, const char *fmt, ...) +/* VARARGS */ +static int PRINTFLIKE(2, 3) +ndo_printf(netdissect_options *ndo, FORMAT_STRING(const char *fmt), ...) { va_list args; int ret;