X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/006004fdda8721eeb86e191e4dd0cfc8a77d1e3d..a63600a1fc28dbc7ae7ce9f996829c49a25fb33c:/print.c

diff --git a/print.c b/print.c
index 84df9a1a..123c842c 100644
--- a/print.c
+++ b/print.c
@@ -42,73 +42,12 @@
 
 #include "pcap-missing.h"
 
-struct uint_printer {
-	uint_if_printer f;
+struct printer {
+	if_printer f;
 	int type;
 };
 
-struct void_printer {
-	void_if_printer f;
-	int type;
-};
-
-static const struct uint_printer uint_printers[] = {
-#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
-#ifdef DLT_LANE8023
-	{ lane_if_print,	DLT_LANE8023 },
-#endif
-#ifdef DLT_C_HDLC
-	{ chdlc_if_print,	DLT_C_HDLC },
-#endif
-#ifdef DLT_HDLC
-	{ chdlc_if_print,	DLT_HDLC },
-#endif
-#if defined(DLT_PFLOG) && defined(HAVE_NET_IF_PFLOG_H)
-	{ pflog_if_print,	DLT_PFLOG },
-#endif
-	{ token_if_print,	DLT_IEEE802 },
-	{ fddi_if_print,	DLT_FDDI },
-#ifdef DLT_LINUX_SLL
-	{ sll_if_print,		DLT_LINUX_SLL },
-#endif
-#ifdef DLT_LINUX_SLL2
-	{ sll2_if_print,	DLT_LINUX_SLL2 },
-#endif
-#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 },
-#endif
-	{ atm_if_print,		DLT_ATM_RFC1483 },
-#ifdef DLT_LTALK
-	{ ltalk_if_print,	DLT_LTALK },
-#endif
-	{ ppp_if_print,		DLT_PPP },
-#ifdef DLT_PPP_WITHDIRECTION
-	{ ppp_if_print,		DLT_PPP_WITHDIRECTION },
-#endif
-#ifdef DLT_PPP_BSDOS
-	{ ppp_bsdos_if_print,	DLT_PPP_BSDOS },
-#endif
-#ifdef DLT_PPP_SERIAL
-	{ ppp_hdlc_if_print,	DLT_PPP_SERIAL },
-#endif
-	{ NULL,			0 },
-};
-
-static const struct void_printer void_printers[] = {
+static const struct printer printers[] = {
 #ifdef DLT_APPLE_IP_OVER_IEEE1394
 	{ ap1394_if_print,	DLT_APPLE_IP_OVER_IEEE1394 },
 #endif
@@ -116,6 +55,7 @@ static const struct void_printer void_printers[] = {
 #ifdef DLT_ARCNET_LINUX
 	{ arcnet_linux_if_print, DLT_ARCNET_LINUX },
 #endif
+	{ atm_if_print,		DLT_ATM_RFC1483 },
 #ifdef DLT_DSA_TAG_BRCM
 	{ brcm_tag_if_print,	DLT_DSA_TAG_BRCM },
 #endif
@@ -125,6 +65,18 @@ static const struct void_printer void_printers[] = {
 #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 },
+#endif
+#ifdef DLT_HDLC
+	{ chdlc_if_print,	DLT_HDLC },
+#endif
+#ifdef DLT_ATM_CLIP
+	{ cip_if_print,		DLT_ATM_CLIP },
+#endif
+#ifdef DLT_CIP
+	{ cip_if_print,		DLT_CIP },
+#endif
 #ifdef DLT_DSA_TAG_DSA
 	{ dsa_if_print,		DLT_DSA_TAG_DSA },
 #endif
@@ -135,6 +87,13 @@ static const struct void_printer void_printers[] = {
 	{ 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_IEEE802_11
 	{ ieee802_11_if_print,	DLT_IEEE802_11},
 #endif
@@ -153,6 +112,9 @@ static const struct void_printer void_printers[] = {
 #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
@@ -204,6 +166,12 @@ static const struct void_printer void_printers[] = {
 #ifdef DLT_JUNIPER_SERVICES
 	{ juniper_services_if_print, DLT_JUNIPER_SERVICES },
 #endif
+#ifdef DLT_LTALK
+	{ ltalk_if_print,	DLT_LTALK },
+#endif
+#ifdef DLT_MFR
+	{ mfr_if_print,		DLT_MFR },
+#endif
 #ifdef DLT_NETANALYZER
 	{ netanalyzer_if_print, DLT_NETANALYZER },
 #endif
@@ -217,12 +185,25 @@ static const struct void_printer void_printers[] = {
 #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_PPI
 	{ ppi_if_print,		DLT_PPI },
 #endif
+#ifdef DLT_PPP_BSDOS
+	{ ppp_bsdos_if_print,	DLT_PPP_BSDOS },
+#endif
+#ifdef DLT_PPP_SERIAL
+	{ ppp_hdlc_if_print,	DLT_PPP_SERIAL },
+#endif
+	{ 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
@@ -240,12 +221,19 @@ static const struct void_printer void_printers[] = {
 	{ sl_bsdos_if_print,	DLT_SLIP_BSDOS },
 #endif
 	{ sl_if_print,		DLT_SLIP },
+#ifdef DLT_LINUX_SLL
+	{ sll_if_print,		DLT_LINUX_SLL },
+#endif
+#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
+	{ token_if_print,	DLT_IEEE802 },
 #ifdef DLT_USB_LINUX
 	{ usb_linux_48_byte_if_print, DLT_USB_LINUX},
 #endif /* DLT_USB_LINUX */
@@ -258,72 +246,18 @@ static const struct void_printer void_printers[] = {
 	{ 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);
-
 void
 init_print(netdissect_options *ndo, uint32_t localnet, uint32_t mask)
 {
-
 	init_addrtoname(ndo, localnet, mask);
-	init_checksum();
-}
-
-uint_if_printer
-lookup_uint_printer(int type)
-{
-	const struct uint_printer *p;
-
-	for (p = uint_printers; p->f; ++p)
-		if (type == p->type)
-			return p->f;
-
-#if defined(DLT_USER2) && defined(DLT_PKTAP)
-	/*
-	 * Apple incorrectly chose to use DLT_USER2 for their PKTAP
-	 * header.
-	 *
-	 * We map DLT_PKTAP, whether it's DLT_USER2 as it is on Darwin-
-	 * based OSes or the same value as LINKTYPE_PKTAP as it is on
-	 * other OSes, to LINKTYPE_PKTAP, so files written with
-	 * this version of libpcap for a DLT_PKTAP capture have a link-
-	 * layer header type of LINKTYPE_PKTAP.
-	 *
-	 * However, files written on OS X Mavericks for a DLT_PKTAP
-	 * capture have a link-layer header type of LINKTYPE_USER2.
-	 * If we don't have a printer for DLT_USER2, and type is
-	 * DLT_USER2, we look up the printer for DLT_PKTAP and use
-	 * that.
-	 */
-	if (type == DLT_USER2) {
-		for (p = uint_printers; p->f; ++p)
-			if (DLT_PKTAP == p->type)
-				return p->f;
-	}
-#endif
-
-	return NULL;
-	/* NOTREACHED */
 }
 
-void_if_printer
-lookup_void_printer(int type)
+if_printer
+lookup_printer(int type)
 {
-	const struct void_printer *p;
+	const struct printer *p;
 
-	for (p = void_printers; p->f; ++p)
+	for (p = printers; p->f; ++p)
 		if (type == p->type)
 			return p->f;
 
@@ -345,7 +279,7 @@ lookup_void_printer(int type)
 	 * that.
 	 */
 	if (type == DLT_USER2) {
-		for (p = void_printers; p->f; ++p)
+		for (p = printers; p->f; ++p)
 			if (DLT_PKTAP == p->type)
 				return p->f;
 	}
@@ -355,45 +289,43 @@ lookup_void_printer(int type)
 	/* NOTREACHED */
 }
 
-if_printer_t
-lookup_printer(netdissect_options *ndo, int type)
-{
-	if_printer_t printer;
-
-	printer.void_printer = lookup_void_printer(type);
-	ndo->ndo_void_printer = TRUE;
-	if (printer.void_printer == NULL) {
-		printer.uint_printer = lookup_uint_printer(type);
-		ndo->ndo_void_printer = FALSE;
-	}
-	return printer;
-}
-
 int
 has_printer(int type)
 {
-	return (lookup_void_printer(type) != NULL ||
-		lookup_uint_printer(type) != NULL);
+	return (lookup_printer(type) != NULL);
 }
 
-if_printer_t
-get_if_printer(netdissect_options *ndo, int type)
+if_printer
+get_if_printer(int type)
 {
-	if_printer_t printer;
+	if_printer printer;
 
-	printer = lookup_printer(ndo, type);
-	if (printer.printer == NULL)
-		printer.void_printer = unsupported_if_print;
+	printer = lookup_printer(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);
 
@@ -450,7 +382,16 @@ 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
@@ -459,21 +400,27 @@ 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;
-	if (setjmp(ndo->ndo_truncated) == 0) {
+	switch (setjmp(ndo->ndo_early_end)) {
+	case 0:
 		/* Print the packet. */
-		if (ndo->ndo_void_printer == TRUE) {
-			(ndo->ndo_if_printer.void_printer)(ndo, h, sp);
-			hdrlen = ndo->ndo_ll_hdr_len;
-		} else
-			hdrlen = (ndo->ndo_if_printer.uint_printer)(ndo, h, sp);
-	} else {
+		(ndo->ndo_if_printer)(ndo, h, sp);
+		break;
+	case ND_TRUNCATED:
 		/* A printer quit because the packet was truncated; report it */
-		ND_PRINT(" [|%s]", ndo->ndo_protocol);
-		hdrlen = ndo->ndo_ll_hdr_len;
+		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;
 
 	/*
 	 * Empty the stack of packet information, freeing all pushed buffers;
@@ -560,9 +507,9 @@ 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;
 
@@ -582,8 +529,8 @@ 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;
 
@@ -600,8 +547,9 @@ 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;