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pcap: update to version 1.0.0, add extension for changing the desired protocol for the internal raw socket (useful for reducing the cpu overhead of capture)

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SVN-Revision: 15398
This commit is contained in:
Felix Fietkau 2009-04-25 03:30:10 +00:00
parent 8ce7b559d0
commit 25e9d90256
10 changed files with 478 additions and 619 deletions
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36
package/libpcap/Makefile
View file

@ -8,12 +8,12 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=libpcap
PKG_VERSION:=0.9.8
PKG_VERSION:=1.0.0
PKG_RELEASE:=1
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://www.tcpdump.org/release/
PKG_MD5SUM:=5208f24d0328ee7c20b52c43eaa9aa0e
PKG_MD5SUM:=9ad1358c5dec48456405eac197a46d3d
include $(INCLUDE_DIR)/package.mk
@ -29,6 +29,21 @@ define Package/libpcap/description
packet capture.
endef
define Package/libpcap/config
config PCAP_HAS_USB
bool "Include USB support"
depends PACKAGE_libpcap
depends PACKAGE_kmod-usb-core
default n
config PCAP_HAS_BT
bool "Include bluetooth support"
depends PACKAGE_libpcap
depends PACKAGE_kmod-bluetooth
default n
endef
TARGET_CFLAGS += \
-ffunction-sections -fdata-sections
@ -38,9 +53,15 @@ CONFIGURE_ARGS += \
--disable-yydebug \
--enable-ipv6 \
--with-build-cc="$(HOSTCC)" \
--with-pcap=linux
--with-pcap=linux \
--without-septel \
--without-dag
define Build/Compile
rm -rf $(PKG_INSTALL_DIR)
$(if $(CONFIG_PCAP_HAS_USB),,$(SED) '/^#define PCAP_SUPPORT_USB/D' $(PKG_BUILD_DIR)/config.h)
$(if $(CONFIG_PCAP_HAS_USB),,$(SED) 's/pcap-usb-linux.c *//' $(PKG_BUILD_DIR)/Makefile)
$(if $(CONFIG_PCAP_HAS_BT),,$(SED) '/^#define PCAP_SUPPORT_BT/D' $(PKG_BUILD_DIR)/config.h)
$(MAKE) -C $(PKG_BUILD_DIR) \
CCOPT="$(TARGET_CFLAGS) -I$(BUILD_DIR)/linux/include" \
DESTDIR="$(PKG_INSTALL_DIR)" \
@ -48,11 +69,12 @@ define Build/Compile
endef
define Build/InstallDev
mkdir -p $(1)/usr/include
$(CP) $(PKG_INSTALL_DIR)/usr/include/pcap{,-bpf,-namedb}.h \
mkdir -p $(1)/usr/include $(1)/usr/lib
$(CP) \
$(PKG_INSTALL_DIR)/usr/include/pcap* \
$(1)/usr/include/
mkdir -p $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib/libpcap.{a,so*} \
$(CP) \
$(PKG_INSTALL_DIR)/usr/lib/libpcap.{a,so*} \
$(1)/usr/lib/
endef

108
package/libpcap/patches/100-shared-lib.patch → package/libpcap/patches/100-debian_shared_lib.patch
View file

@ -1,22 +1,29 @@
Debian-specific modifications to the upstream Makefile.in to
build a shared library.
---
Makefile.in | 45 ++++++++++++++++++++++++++++++++++++++++++---
configure | 2 +-
configure.in | 2 +-
3 files changed, 44 insertions(+), 5 deletions(-)
--- a/Makefile.in
+++ b/Makefile.in
@@ -37,6 +37,15 @@
@@ -40,6 +40,14 @@ mandir = @mandir@
srcdir = @srcdir@
VPATH = @srcdir@
+# some defines for shared library compilation
+MAJ=0.9
+MIN=8
+VERSION=$(MAJ).$(MIN)
+MAJ=1.0
+LIBVERSION=$(MAJ).0
+LIBNAME=pcap
+LIBRARY=lib$(LIBNAME).a
+SOLIBRARY=lib$(LIBNAME).so
+SHAREDLIB=$(SOLIBRARY).$(VERSION)
+SHAREDLIB=$(SOLIBRARY).$(LIBVERSION)
+
#
# You shouldn't need to edit anything below.
#
@@ -52,6 +61,7 @@
@@ -56,6 +64,7 @@ PROG=libpcap
# Standard CFLAGS
CFLAGS = $(CCOPT) $(INCLS) $(DEFS)
@ -24,41 +31,49 @@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
@@ -72,7 +82,12 @@
@@ -75,7 +84,11 @@ YACC = @V_YACC@
# problem if you don't own the file but can write to the directory.
.c.o:
@rm -f $@
$(CC) $(CFLAGS) -c $(srcdir)/$*.c
- $(CC) $(CFLAGS) -c $(srcdir)/$*.c
+ $(CC) $(CFLAGS) -c -o $@ $(srcdir)/$*.c
+
+%_pic.o: %.c
+ @rm -f $@
+ $(CC) -fPIC $(CFLAGS) -c -o $@ $(srcdir)/$*.c
+
PSRC = pcap-@V_PCAP@.c
PSRC = pcap-@V_PCAP@.c @USB_SRC@ @BT_SRC@
FSRC = fad-@V_FINDALLDEVS@.c
SSRC = @SSRC@
@@ -86,6 +101,7 @@
@@ -90,6 +103,7 @@ SRC = $(PSRC) $(FSRC) $(CSRC) $(SSRC) $(
# We would like to say "OBJ = $(SRC:.c=.o)" but Ultrix's make cannot
# hack the extra indirection
OBJ = $(PSRC:.c=.o) $(FSRC:.c=.o) $(CSRC:.c=.o) $(SSRC:.c=.o) $(GENSRC:.c=.o) $(LIBOBJS)
+OBJ_PIC = $(PSRC:.c=_pic.o) $(FSRC:.c=_pic.o) $(CSRC:.c=_pic.o) $(SSRC:.c=_pic.o) $(GENSRC:.c=_pic.o)
HDR = pcap.h pcap-int.h pcap-namedb.h pcap-nit.h pcap-pf.h \
ethertype.h gencode.h gnuc.h
GENHDR = \
@@ -97,15 +113,23 @@
HDR = \
acconfig.h \
arcnet.h \
@@ -122,7 +136,8 @@ TAGHDR = \
TAGFILES = \
$(SRC) $(HDR) $(TAGHDR)
-CLEANFILES = $(OBJ) libpcap.a $(GENSRC) $(GENHDR) lex.yy.c
+CLEANFILES = $(OBJ) $(OBJ_PIC) libpcap.a $(GENSRC) $(GENHDR) lex.yy.c libpcap.so*
+CLEANFILES = $(OBJ) libpcap.a $(GENSRC) $(GENHDR) lex.yy.c \
+ $(OBJ_PIC) libpcap.so*
-all: libpcap.a
+all: libpcap.a $(SHAREDLIB)
MAN1 = pcap-config.1
@@ -311,7 +326,7 @@ EXTRA_DIST = \
Win32/Src/inet_net.c \
Win32/Src/inet_pton.c
-all: libpcap.a pcap-config
+all: libpcap.a pcap-config $(SHAREDLIB)
libpcap.a: $(OBJ)
@rm -f $@
ar rc $@ $(OBJ) $(LIBS)
$(RANLIB) $@
@@ -344,6 +359,13 @@ libpcap.dylib: $(OBJ)
-compatibility_version 1 \
-current_version `sed 's/[^0-9.].*$$//' $(srcdir)/VERSION`
+$(SHAREDLIB): $(OBJ_PIC)
+ -@rm -f $@
@ -67,53 +82,76 @@
+ ln -s $(SHAREDLIB) $(SOLIBRARY).$(MAJ)
+ ln -s $(SOLIBRARY).$(MAJ) $(SOLIBRARY)
+
+
shared: libpcap.$(DYEXT)
#
@@ -131,6 +155,10 @@
scanner.c: $(srcdir)/scanner.l
@rm -f $@
./runlex.sh $(LEX) -o$@ $<
@@ -351,6 +373,9 @@ scanner.c: $(srcdir)/scanner.l
scanner.o: scanner.c tokdefs.h
$(CC) $(CFLAGS) -c scanner.c
+scanner_pic.o: scanner.c tokdefs.h
+ $(CC) -fPIC $(CFLAGS) -o $@ -c scanner.c
+
+
pcap.o: version.h
tokdefs.h: grammar.c
@@ -144,9 +172,16 @@
@@ -364,9 +389,17 @@ grammar.o: grammar.c
@rm -f $@
$(CC) $(CFLAGS) -Dyylval=pcap_lval -c grammar.c
+grammar_pic.o: grammar.c
+ @rm -f $@
+ $(CC) -fPIC $(CFLAGS) -Dyylval=pcap_lval -o $@ -c grammar.c
+ $(CC) -fPIC $(CFLAGS) -Dyylval=pcap_lval -o $@ -c grammar.c
+
version.o: version.c
$(CC) $(CFLAGS) -c version.c
+version_pic.o: version.c
+ $(CC) -fPIC $(CFLAGS) -c version.c -o $@
+
+
snprintf.o: $(srcdir)/missing/snprintf.c
$(CC) $(CFLAGS) -o $@ -c $(srcdir)/missing/snprintf.c
@@ -172,10 +207,17 @@
@@ -392,6 +425,9 @@ bpf_filter.c: $(srcdir)/bpf/net/bpf_filt
bpf_filter.o: bpf_filter.c
$(CC) $(CFLAGS) -c bpf_filter.c
+bpf_filter_pic.o: bpf_filter.c
+ $(CC) -fPIC $(CFLAGS) -c bpf_filter.c -o $@
+
+
install: libpcap.a
[ -d $(DESTDIR)$(libdir) ] || \
#
# Generate the pcap-config script.
#
@@ -418,6 +454,9 @@ install: libpcap.a pcap-config
(mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir))
$(INSTALL_DATA) libpcap.a $(DESTDIR)$(libdir)/libpcap.a
$(RANLIB) $(DESTDIR)$(libdir)/libpcap.a
+ $(INSTALL_DATA) $(SHAREDLIB) $(DESTDIR)$(libdir)/
+ ln -sf $(SHAREDLIB) $(DESTDIR)$(libdir)/$(SOLIBRARY).$(MAJ)
+ ln -sf $(SOLIBRARY).$(MAJ) $(DESTDIR)$(libdir)/$(SOLIBRARY)
$(RANLIB) $(DESTDIR)$(libdir)/libpcap.a
[ -d $(DESTDIR)$(includedir) ] || \
(mkdir -p $(DESTDIR)$(includedir); chmod 755 $(DESTDIR)$(includedir))
[ -d $(DESTDIR)$(includedir)/pcap ] || \
--- a/configure
+++ b/configure
@@ -8658,7 +8658,7 @@ irix*)
;;
linux*)
- V_CCOPT="$V_CCOPT -fPIC"
+ V_CCOPT="$V_CCOPT"
;;
osf*)
--- a/configure.in
+++ b/configure.in
@@ -943,7 +943,7 @@ irix*)
;;
linux*)
- V_CCOPT="$V_CCOPT -fPIC"
+ V_CCOPT="$V_CCOPT"
;;
osf*)

11
package/libpcap/patches/101-cross-compile-fix.patch
View file

@ -1,11 +0,0 @@
--- a/Makefile.in
+++ b/Makefile.in
@@ -119,7 +119,7 @@
libpcap.a: $(OBJ)
@rm -f $@
- ar rc $@ $(OBJ) $(LIBS)
+ $(AR) rc $@ $(OBJ) $(LIBS)
$(RANLIB) $@
$(SHAREDLIB): $(OBJ_PIC)

149
package/libpcap/patches/101-debian_fix_any_intf.patch Normal file
View file

@ -0,0 +1,149 @@
--- a/pcap-linux.c
+++ b/pcap-linux.c
@@ -297,6 +297,12 @@ pcap_create(const char *device, char *eb
{
pcap_t *handle;
+ /*
+ * A null device name is equivalent to the "any" device.
+ */
+ if (device == NULL)
+ device = "any";
+
#ifdef HAVE_DAG_API
if (strstr(device, "dag")) {
return dag_create(device, ebuf);
@@ -338,10 +344,9 @@ pcap_can_set_rfmon_linux(pcap_t *p)
struct iwreq ireq;
#endif
- if (p->opt.source == NULL) {
+ if (strcmp(p->opt.source, "any") == 0) {
/*
- * This is equivalent to the "any" device, and we don't
- * support monitor mode on it.
+ * Monitor mode makes no sense on the "any" device.
*/
return 0;
}
@@ -518,12 +523,11 @@ pcap_activate_linux(pcap_t *handle)
handle->stats_op = pcap_stats_linux;
/*
- * NULL and "any" are special devices which give us the hint to
- * monitor all devices.
+ * The "any" device is a special device which causes us not
+ * to bind to a particular device and thus to look at all
+ * devices.
*/
- if (!device || strcmp(device, "any") == 0) {
- device = NULL;
- handle->md.device = strdup("any");
+ if (strcmp(device, "any") == 0) {
if (handle->opt.promisc) {
handle->opt.promisc = 0;
/* Just a warning. */
@@ -531,10 +535,9 @@ pcap_activate_linux(pcap_t *handle)
"Promiscuous mode not supported on the \"any\" device");
status = PCAP_WARNING_PROMISC_NOTSUP;
}
+ }
- } else
- handle->md.device = strdup(device);
-
+ handle->md.device = strdup(device);
if (handle->md.device == NULL) {
snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "strdup: %s",
pcap_strerror(errno) );
@@ -1657,19 +1660,21 @@ static int
activate_new(pcap_t *handle)
{
#ifdef HAVE_PF_PACKET_SOCKETS
+ const char *device = handle->opt.source;
+ int is_any_device = (strcmp(device, "any") == 0);
int sock_fd = -1, arptype, val;
int err = 0;
struct packet_mreq mr;
- const char* device = handle->opt.source;
/*
- * Open a socket with protocol family packet. If a device is
- * given we try to open it in raw mode otherwise we use
- * the cooked interface.
- */
- sock_fd = device ?
- socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))
- : socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL));
+ * Open a socket with protocol family packet. If the
+ * "any" device was specified, we open a SOCK_DGRAM
+ * socket for the cooked interface, otherwise we first
+ * try a SOCK_RAW socket for the raw interface.
+ */
+ sock_fd = is_any_device ?
+ socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) :
+ socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
if (sock_fd == -1) {
snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "socket: %s",
@@ -1704,7 +1709,7 @@ activate_new(pcap_t *handle)
* to cooked mode if we have an unknown interface type
* or a type we know doesn't work well in raw mode.
*/
- if (device) {
+ if (!is_any_device) {
/* Assume for now we don't need cooked mode. */
handle->md.cooked = 0;
@@ -1819,15 +1824,23 @@ activate_new(pcap_t *handle)
}
} else {
/*
- * This is cooked mode.
+ * The "any" device.
+ */
+ if (handle->opt.rfmon) {
+ /*
+ * It doesn't support monitor mode.
+ */
+ return PCAP_ERROR_RFMON_NOTSUP;
+ }
+
+ /*
+ * It uses cooked mode.
*/
handle->md.cooked = 1;
handle->linktype = DLT_LINUX_SLL;
/*
* We're not bound to a device.
- * XXX - true? Or true only if we're using
- * the "any" device?
* For now, we're using this as an indication
* that we can't transmit; stop doing that only
* if we figure out how to transmit in cooked
@@ -1852,10 +1865,13 @@ activate_new(pcap_t *handle)
/*
* Hmm, how can we set promiscuous mode on all interfaces?
- * I am not sure if that is possible at all.
+ * I am not sure if that is possible at all. For now, we
+ * silently ignore attempts to turn promiscuous mode on
+ * for the "any" device (so you don't have to explicitly
+ * disable it in programs such as tcpdump).
*/
- if (device && handle->opt.promisc) {
+ if (!is_any_device && handle->opt.promisc) {
memset(&mr, 0, sizeof(mr));
mr.mr_ifindex = handle->md.ifindex;
mr.mr_type = PACKET_MR_PROMISC;
@@ -3118,7 +3134,7 @@ activate_old(pcap_t *handle)
/* Bind to the given device */
- if (!device) {
+ if (strcmp(device, "any") == 0) {
strncpy(handle->errbuf, "pcap_activate: The \"any\" device isn't supported on 2.0[.x]-kernel systems",
PCAP_ERRBUF_SIZE);
return PCAP_ERROR;

38
package/libpcap/patches/102-alt-ether.patch
View file

@ -1,38 +0,0 @@
--- a/nametoaddr.c
+++ b/nametoaddr.c
@@ -410,7 +410,7 @@
e = ep = (u_char *)malloc(6);
while (*s) {
- if (*s == ':')
+ if (*s == ':' || *s == '.')
s += 1;
d = xdtoi(*s++);
if (isxdigit((unsigned char)*s)) {
--- a/scanner.l
+++ b/scanner.l
@@ -80,6 +80,7 @@
N ([0-9]+|(0X|0x)[0-9A-Fa-f]+)
B ([0-9A-Fa-f][0-9A-Fa-f]?)
W ([0-9A-Fa-f][0-9A-Fa-f]?[0-9A-Fa-f]?[0-9A-Fa-f]?)
+X [0-9A-Fa-f]
%a 18400
%o 21500
@@ -310,7 +311,7 @@
{N} { yylval.i = stoi((char *)yytext); return NUM; }
({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N}) {
yylval.s = sdup((char *)yytext); return HID; }
-{B}:{B}:{B}:{B}:{B}:{B} { yylval.e = pcap_ether_aton((char *)yytext);
+({B}:{B}:{B}:{B}:{B}:{B})|({B}\.{B}\.{B}\.{B}\.{B}\.{B}) { yylval.e = pcap_ether_aton((char *)yytext);
return EID; }
{V6} {
#ifdef INET6
@@ -328,6 +329,7 @@
#endif /*INET6*/
}
{B}:+({B}:+)+ { bpf_error("bogus ethernet address %s", yytext); }
+{X}{12} { yylval.e = pcap_ether_aton((char *)yytext); return EID;}
icmptype { yylval.i = 0; return NUM; }
icmpcode { yylval.i = 1; return NUM; }
icmp-echoreply { yylval.i = 0; return NUM; }

11
package/libpcap/patches/102-fix_install.patch Normal file
View file

@ -0,0 +1,11 @@
--- a/Makefile.in
+++ b/Makefile.in
@@ -484,6 +484,8 @@ install: libpcap.a pcap-config
$(DESTDIR)$(includedir)/pcap-bpf.h
$(INSTALL_DATA) $(srcdir)/pcap-namedb.h \
$(DESTDIR)$(includedir)/pcap-namedb.h
+ [ -d $(DESTDIR)$(bindir) ] || \
+ (mkdir -p $(DESTDIR)$(bindir); chmod 755 $(DESTDIR)$(bindir))
$(INSTALL_PROGRAM) pcap-config $(DESTDIR)$(bindir)/pcap-config
for i in $(MAN1); do \
$(INSTALL_DATA) $(srcdir)/$$i \

4
package/libpcap/patches/103-flex_workaround.patch
View file

@ -3,7 +3,7 @@
--- a/Makefile.in
+++ b/Makefile.in
@@ -53,7 +53,7 @@
@@ -55,7 +55,7 @@ SHAREDLIB=$(SOLIBRARY).$(LIBVERSION)
CC = @CC@
CCOPT = @V_CCOPT@
INCLS = -I. @V_INCLS@
@ -11,4 +11,4 @@
+DEFS = -D_BSD_SOURCE @DEFS@ @V_DEFS@
LIBS = @V_LIBS@
DAGLIBS = @DAGLIBS@
DYEXT = @DYEXT@
DEPLIBS = @DEPLIBS@

469
package/libpcap/patches/104-no_rej_files.patch
View file

@ -1,469 +0,0 @@
diff -urN libpcap-0.9.8/gencode.c.rej libpcap-0.9.8.new/gencode.c.rej
--- libpcap-0.9.8/gencode.c.rej 2007-07-10 21:38:15.000000000 +0200
+++ libpcap-0.9.8.new/gencode.c.rej 1970-01-01 01:00:00.000000000 +0100
@@ -1,465 +0,0 @@
-***************
-*** 24,29 ****
- "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.51 2007/06/14 20:54:12 gianluca Exp $ (LBL)";
- #endif
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
---- 24,31 ----
- "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.51 2007/06/14 20:54:12 gianluca Exp $ (LBL)";
- #endif
-
-+ #define ENABLE_WLAN_FILTERING_PATCH
-+
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-***************
-*** 144,150 ****
- OR_NET, /* relative to the network-layer header */
- OR_NET_NOSNAP, /* relative to the network-layer header, with no SNAP header at the link layer */
- OR_TRAN_IPV4, /* relative to the transport-layer header, with IPv4 network layer */
-- OR_TRAN_IPV6 /* relative to the transport-layer header, with IPv6 network layer */
- };
-
- /*
---- 146,153 ----
- OR_NET, /* relative to the network-layer header */
- OR_NET_NOSNAP, /* relative to the network-layer header, with no SNAP header at the link layer */
- OR_TRAN_IPV4, /* relative to the transport-layer header, with IPv4 network layer */
-+ OR_TRAN_IPV6, /* relative to the transport-layer header, with IPv6 network layer */
-+ OR_LINK_AFTER_WIRELESS_HDR /* After the 802.11 variable length header */
- };
-
- /*
-***************
-*** 199,204 ****
- static struct block *gen_linktype(int);
- static struct block *gen_snap(bpf_u_int32, bpf_u_int32, u_int);
- static struct block *gen_llc_linktype(int);
- static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int);
- #ifdef INET6
- static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);
---- 202,208 ----
- static struct block *gen_linktype(int);
- static struct block *gen_snap(bpf_u_int32, bpf_u_int32, u_int);
- static struct block *gen_llc_linktype(int);
-+ static struct block *gen_802_11_llc_linktype(int);
- static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int);
- #ifdef INET6
- static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);
-***************
-*** 242,247 ****
- static struct slist *xfer_to_a(struct arth *);
- static struct block *gen_mac_multicast(int);
- static struct block *gen_len(int, int);
-
- static struct block *gen_ppi_dlt_check();
- static struct block *gen_msg_abbrev(int type);
---- 246,252 ----
- static struct slist *xfer_to_a(struct arth *);
- static struct block *gen_mac_multicast(int);
- static struct block *gen_len(int, int);
-+ static struct block *gen_check_802_11_data_frame();
-
- static struct block *gen_ppi_dlt_check();
- static struct block *gen_msg_abbrev(int type);
-***************
-*** 1345,1350 ****
- return s;
- }
-
-
- /*
- * Load a value relative to the beginning of the specified header.
---- 1350,1487 ----
- return s;
- }
-
-+ /*
-+ * Load a value relative to the beginning of the link-layer header after the 802.11
-+ * header, i.e. LLC_SNAP.
-+ * The link-layer header doesn't necessarily begin at the beginning
-+ * of the packet data; there might be a variable-length prefix containing
-+ * radio information.
-+ */
-+ static struct slist *
-+ gen_load_ll_after_802_11_rel(offset, size)
-+ u_int offset, size;
-+ {
-+ struct slist *s, *s_load_fc;
-+ struct slist *sjset_qos;
-+ struct slist *s_load;
-+ struct slist *s_ld_a_2;
-+ struct slist *s_add_a_x;
-+ struct slist *s_a_to_x;
-+ struct slist *sjset_data_frame_1;
-+ struct slist *sjset_data_frame_2;
-+ struct slist *s_load_x_0;
-+
-+ /*
-+ * This code is not compatible with the optimizer, as
-+ * we are generating jmp instructions within a normal
-+ * slist of instructions
-+ *
-+ */
-+ no_optimize = 1;
-+
-+ s = gen_llprefixlen();
-+
-+ /*
-+ * If "s" is non-null, it has code to arrange that the X register
-+ * contains the length of the prefix preceding the link-layer
-+ * header.
-+ *
-+ * Otherwise, the length of the prefix preceding the link-layer
-+ * header is "off_ll".
-+ */
-+ if (s != NULL) {
-+ /*
-+ * There's a variable-length prefix preceding the
-+ * link-layer header. "s" points to a list of statements
-+ * that put the length of that prefix into the X register.
-+ * do an indirect load, to use the X register as an offset.
-+ */
-+
-+ /*
-+ * Load the Frame Control field
-+ */
-+ s_load_fc = new_stmt(BPF_LD|BPF_IND|BPF_B);
-+ s_load_fc->s.k = 0;
-+ } else {
-+ /*
-+ * There is no variable-length header preceding the
-+ * link-layer header; add in off_ll, which, if there's
-+ * a fixed-length header preceding the link-layer header,
-+ * is the length of that header.
-+ */
-+
-+ /*
-+ * We need to load the Frame control directly, and
-+ * then load X with a fake 0, i.e. the length of the
-+ * non-existing prepended header
-+ */
-+
-+ /*
-+ * TODO GV: I'm not sure if 0 is the right constant in this
-+ * case. If the link layer has a fixed length prepended header,
-+ * that should be the value that we put here
-+ */
-+
-+ /* Load 0 into X */
-+ s_load_x_0 = new_stmt(BPF_LDX|BPF_IMM);
-+ s_load_x_0->s.k = 0;
-+
-+ /*
-+ * TODO GV: I'm not sure if 0 is the right constant in this
-+ * case. If the link layer has a fixed length prepended header,
-+ * that should be the value that we put here
-+ */
-+
-+ /*
-+ * load the Frame Control with absolute access
-+ */
-+ s_load_fc = new_stmt(BPF_LD|BPF_ABS|BPF_B);
-+ s_load_fc->s.k = 0;
-+ s = s_load_x_0;
-+ }
-+
-+ /*
-+ * Generate the common instructions to check if it's a data frame
-+ * and if so compute the 802.11 header length
-+ */
-+ sjset_data_frame_1 = new_stmt(JMP(BPF_JSET)); // b3 should be 1
-+ sjset_data_frame_1->s.k = 0x8;
-+
-+ sjset_data_frame_2 = new_stmt(JMP(BPF_JSET)); // b2 should be 0
-+ sjset_data_frame_2->s.k = 0x04;
-+
-+ sjset_qos = new_stmt(JMP(BPF_JSET));
-+ sjset_qos->s.k = 0x80; //QOS bit
-+
-+ s_ld_a_2 = new_stmt(BPF_LD|BPF_IMM);
-+ s_ld_a_2->s.k = 2;
-+
-+ s_add_a_x = new_stmt(BPF_ALU|BPF_ADD|BPF_X);
-+ s_a_to_x = new_stmt(BPF_MISC|BPF_TAX);
-+
-+ s_load = new_stmt(BPF_LD|BPF_IND|size);
-+ s_load->s.k = offset;
-+
-+ sjset_data_frame_1->s.jt = sjset_data_frame_2;
-+ sjset_data_frame_1->s.jf = s_load;
-+
-+ sjset_data_frame_2->s.jt = s_load;
-+ sjset_data_frame_2->s.jf = sjset_qos;
-+
-+ sjset_qos->s.jt = s_ld_a_2;
-+ sjset_qos->s.jf = s_load;
-+
-+ sappend(s, s_load_fc);
-+ sappend(s_load_fc, sjset_data_frame_1);
-+ sappend(sjset_data_frame_1, sjset_data_frame_2);
-+ sappend(sjset_data_frame_2, sjset_qos);
-+ sappend(sjset_qos, s_ld_a_2);
-+ sappend(s_ld_a_2, s_add_a_x);
-+ sappend(s_add_a_x,s_a_to_x);
-+ sappend(s_a_to_x, s_load);
-+
-+ return s;
-+ }
-
- /*
- * Load a value relative to the beginning of the specified header.
-***************
-*** 1367,1372 ****
- s = gen_load_llrel(offset, size);
- break;
-
- case OR_NET:
- s = gen_load_llrel(off_nl + offset, size);
- break;
---- 1504,1525 ----
- s = gen_load_llrel(offset, size);
- break;
-
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
-+
-+ case OR_LINK_AFTER_WIRELESS_HDR:
-+ if (linktype != DLT_IEEE802_11_RADIO
-+ && linktype != DLT_PPI
-+ && linktype != DLT_IEEE802_11
-+ && linktype != DLT_PRISM_HEADER
-+ && linktype != DLT_IEEE802_11_RADIO_AVS)
-+ {
-+ abort();
-+ return NULL;
-+ }
-+ s = gen_load_ll_after_802_11_rel(offset + 24, size);
-+ break;
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
-+
- case OR_NET:
- s = gen_load_llrel(off_nl + offset, size);
- break;
-***************
-*** 2163,2173 ****
- break;
-
- case DLT_PPI:
- case DLT_FDDI:
- case DLT_IEEE802:
-- case DLT_IEEE802_11:
- case DLT_IEEE802_11_RADIO_AVS:
-- case DLT_IEEE802_11_RADIO:
- case DLT_PRISM_HEADER:
- case DLT_ATM_RFC1483:
- case DLT_ATM_CLIP:
---- 2316,2332 ----
- break;
-
- case DLT_PPI:
-+ case DLT_IEEE802_11_RADIO:
-+ case DLT_IEEE802_11:
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
-+ return gen_802_11_llc_linktype(proto);
-+ /*NOTREACHED*/
-+ break;
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
-+
- case DLT_FDDI:
- case DLT_IEEE802:
- case DLT_IEEE802_11_RADIO_AVS:
- case DLT_PRISM_HEADER:
- case DLT_ATM_RFC1483:
- case DLT_ATM_CLIP:
-***************
-*** 2711,2716 ****
- }
- }
-
- static struct block *
- gen_hostop(addr, mask, dir, proto, src_off, dst_off)
- bpf_u_int32 addr;
---- 2870,2982 ----
- }
- }
-
-+ /*
-+ * Generate code to match a particular packet type, for link-layer types
-+ * using 802.2 LLC headers.
-+ *
-+ * This is *NOT* used for Ethernet; "gen_ether_linktype()" is used
-+ * for that - it handles the D/I/X Ethernet vs. 802.3+802.2 issues.
-+ *
-+ * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP
-+ * value, if <= ETHERMTU. We use that to determine whether to
-+ * match the DSAP or both DSAP and LSAP or to check the OUI and
-+ * protocol ID in a SNAP header.
-+ */
-+ static struct block *
-+ gen_802_11_llc_linktype(proto)
-+ int proto;
-+ {
-+ struct block *b_check_data_frame;
-+ struct block *b_check_linktype;
-+
-+ b_check_data_frame = gen_check_802_11_data_frame();
-+
-+ /*
-+ * XXX - generate the code that discards non data frames
-+ */
-+ switch (proto) {
-+
-+ case LLCSAP_IP:
-+ case LLCSAP_ISONS:
-+ case LLCSAP_NETBEUI:
-+ /*
-+ * XXX - should we check both the DSAP and the
-+ * SSAP, like this, or should we check just the
-+ * DSAP, as we do for other types <= ETHERMTU
-+ * (i.e., other SAP values)?
-+ */
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_H, (bpf_u_int32)
-+ ((proto << 8) | proto));
-+ break;
-+
-+ case LLCSAP_IPX:
-+ /*
-+ * XXX - are there ever SNAP frames for IPX on
-+ * non-Ethernet 802.x networks?
-+ */
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_B,
-+ (bpf_int32)LLCSAP_IPX);
-+
-+ break;
-+
-+ #if 0
-+ case ETHERTYPE_ATALK:
-+ /*
-+ * 802.2-encapsulated ETHERTYPE_ATALK packets are
-+ * SNAP packets with an organization code of
-+ * 0x080007 (Apple, for Appletalk) and a protocol
-+ * type of ETHERTYPE_ATALK (Appletalk).
-+ *
-+ * XXX - check for an organization code of
-+ * encapsulated Ethernet as well?
-+ */
-+ return gen_snap(0x080007, ETHERTYPE_ATALK, off_linktype);
-+ #endif
-+ default:
-+ /*
-+ * XXX - we don't have to check for IPX 802.3
-+ * here, but should we check for the IPX Ethertype?
-+ */
-+ if (proto <= ETHERMTU) {
-+ /*
-+ * This is an LLC SAP value, so check
-+ * the DSAP.
-+ */
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_B,
-+ (bpf_int32)proto);
-+ } else {
-+ /*
-+ * This is an Ethernet type; we assume that it's
-+ * unlikely that it'll appear in the right place
-+ * at random, and therefore check only the
-+ * location that would hold the Ethernet type
-+ * in a SNAP frame with an organization code of
-+ * 0x000000 (encapsulated Ethernet).
-+ *
-+ * XXX - if we were to check for the SNAP DSAP and
-+ * LSAP, as per XXX, and were also to check for an
-+ * organization code of 0x000000 (encapsulated
-+ * Ethernet), we'd do
-+ *
-+ * return gen_snap(0x000000, proto,
-+ * off_linktype);
-+ *
-+ * here; for now, we don't, as per the above.
-+ * I don't know whether it's worth the extra CPU
-+ * time to do the right check or not.
-+ */
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0+6, BPF_H,
-+ (bpf_int32)proto);
-+ }
-+ }
-+
-+ gen_and(b_check_data_frame, b_check_linktype);
-+ return b_check_linktype;
-+
-+ }
-+
-+
-+
- static struct block *
- gen_hostop(addr, mask, dir, proto, src_off, dst_off)
- bpf_u_int32 addr;
-***************
-*** 2925,2930 ****
- register struct block *b0, *b1, *b2;
- register struct slist *s;
-
- switch (dir) {
- case Q_SRC:
- /*
---- 3191,3207 ----
- register struct block *b0, *b1, *b2;
- register struct slist *s;
-
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
-+ /*
-+ * TODO GV 20070613
-+ * We need to disable the optimizer because the optimizer is buggy
-+ * and wipes out some LD instructions generated by the below
-+ * code to validate the Frame Control bits
-+ *
-+ */
-+ no_optimize = 1;
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
-+
- switch (dir) {
- case Q_SRC:
- /*
-***************
-*** 4713,4718 ****
- #endif
- }
-
-
- /*
- * Generate code that checks whether the packet is a packet for protocol
---- 4990,5021 ----
- #endif
- }
-
-+ static struct block *
-+ gen_check_802_11_data_frame()
-+ {
-+ struct slist *s;
-+ struct block *b0, *b1;
-+ /*
-+ * Now check for a data frame.
-+ * I.e, check "link[0] & 0x08".
-+ */
-+ s = gen_load_a(OR_LINK, 0, BPF_B);
-+ b0 = new_block(JMP(BPF_JSET));
-+ b0->s.k = 0x08;
-+ b0->stmts = s;
-+
-+ s = gen_load_a(OR_LINK, 0, BPF_B);
-+ b1 = new_block(JMP(BPF_JSET));
-+ b1->s.k = 0x04;
-+ b1->stmts = s;
-+ gen_not(b1);
-+
-+
-+ gen_and(b1, b0);
-+
-+ return b0;
-+ }
-+
-
- /*
- * Generate code that checks whether the packet is a packet for protocol

130
package/libpcap/patches/105-space_optimization.patch
View file

@ -1,6 +1,6 @@
--- a/gencode.c
+++ b/gencode.c
@@ -429,20 +429,6 @@ pcap_compile_nopcap(int snaplen_arg, int
@@ -439,20 +439,6 @@ pcap_compile_nopcap(int snaplen_arg, int
}
/*
@ -21,9 +21,71 @@
* Backpatch the blocks in 'list' to 'target'. The 'sense' field indicates
* which of the jt and jf fields has been resolved and which is a pointer
* back to another unresolved block (or nil). At least one of the fields
--- a/pcap.c
+++ b/pcap.c
@@ -698,6 +698,59 @@ static const u_char charmap[] = {
(u_char)'\374', (u_char)'\375', (u_char)'\376', (u_char)'\377',
};
+/*
+ * Clean up a "struct bpf_program" by freeing all the memory allocated
+ * in it.
+ */
+void
+pcap_freecode(struct bpf_program *program)
+{
+ program->bf_len = 0;
+ if (program->bf_insns != NULL) {
+ free((char *)program->bf_insns);
+ program->bf_insns = NULL;
+ }
+}
+
+/*
+ * Make a copy of a BPF program and put it in the "fcode" member of
+ * a "pcap_t".
+ *
+ * If we fail to allocate memory for the copy, fill in the "errbuf"
+ * member of the "pcap_t" with an error message, and return -1;
+ * otherwise, return 0.
+ */
+int
+install_bpf_program(pcap_t *p, struct bpf_program *fp)
+{
+ size_t prog_size;
+
+ /*
+ * Validate the program.
+ */
+ if (!bpf_validate(fp->bf_insns, fp->bf_len)) {
+ snprintf(p->errbuf, sizeof(p->errbuf),
+ "BPF program is not valid");
+ return (-1);
+ }
+
+ /*
+ * Free up any already installed program.
+ */
+ pcap_freecode(&p->fcode);
+
+ prog_size = sizeof(*fp->bf_insns) * fp->bf_len;
+ p->fcode.bf_len = fp->bf_len;
+ p->fcode.bf_insns = (struct bpf_insn *)malloc(prog_size);
+ if (p->fcode.bf_insns == NULL) {
+ snprintf(p->errbuf, sizeof(p->errbuf),
+ "malloc: %s", pcap_strerror(errno));
+ return (-1);
+ }
+ memcpy(p->fcode.bf_insns, fp->bf_insns, prog_size);
+ return (0);
+}
+
int
pcap_strcasecmp(const char *s1, const char *s2)
{
--- a/optimize.c
+++ b/optimize.c
@@ -2263,36 +2263,6 @@ icode_to_fcode(root, lenp)
@@ -2278,45 +2278,6 @@ icode_to_fcode(root, lenp)
return fp;
}
@ -41,6 +103,15 @@
- size_t prog_size;
-
- /*
- * Validate the program.
- */
- if (!bpf_validate(fp->bf_insns, fp->bf_len)) {
- snprintf(p->errbuf, sizeof(p->errbuf),
- "BPF program is not valid");
- return (-1);
- }
-
- /*
- * Free up any already installed program.
- */
- pcap_freecode(&p->fcode);
@ -60,58 +131,3 @@
#ifdef BDEBUG
static void
opt_dump(root)
--- a/pcap.c
+++ b/pcap.c
@@ -463,6 +463,52 @@ static const u_char charmap[] = {
(u_char)'\374', (u_char)'\375', (u_char)'\376', (u_char)'\377',
};
+/*
+ * Clean up a "struct bpf_program" by freeing all the memory allocated
+ * in it.
+ */
+void
+pcap_freecode(struct bpf_program *program)
+{
+ program->bf_len = 0;
+ if (program->bf_insns != NULL) {
+ free((char *)program->bf_insns);
+ program->bf_insns = NULL;
+ }
+}
+
+
+/*
+ * Make a copy of a BPF program and put it in the "fcode" member of
+ * a "pcap_t".
+ *
+ * If we fail to allocate memory for the copy, fill in the "errbuf"
+ * member of the "pcap_t" with an error message, and return -1;
+ * otherwise, return 0.
+ */
+int
+install_bpf_program(pcap_t *p, struct bpf_program *fp)
+{
+ size_t prog_size;
+
+ /*
+ * Free up any already installed program.
+ */
+ pcap_freecode(&p->fcode);
+
+ prog_size = sizeof(*fp->bf_insns) * fp->bf_len;
+ p->fcode.bf_len = fp->bf_len;
+ p->fcode.bf_insns = (struct bpf_insn *)malloc(prog_size);
+ if (p->fcode.bf_insns == NULL) {
+ snprintf(p->errbuf, sizeof(p->errbuf),
+ "malloc: %s", pcap_strerror(errno));
+ return (-1);
+ }
+ memcpy(p->fcode.bf_insns, fp->bf_insns, prog_size);
+ return (0);
+}
+
+
int
pcap_strcasecmp(const char *s1, const char *s2)
{

141
package/libpcap/patches/106-protocol_api.patch Normal file
View file

@ -0,0 +1,141 @@
--- a/pcap-int.h
+++ b/pcap-int.h
@@ -187,6 +187,7 @@ struct pcap_opt {
char *source;
int promisc;
int rfmon;
+ int proto; /* protocol for packet socket (linux) */
};
/*
--- a/pcap-linux.c
+++ b/pcap-linux.c
@@ -273,7 +273,7 @@ static int iface_get_id(int fd, const ch
static int iface_get_mtu(int fd, const char *device, char *ebuf);
static int iface_get_arptype(int fd, const char *device, char *ebuf);
#ifdef HAVE_PF_PACKET_SOCKETS
-static int iface_bind(int fd, int ifindex, char *ebuf);
+static int iface_bind(int fd, int ifindex, char *ebuf, unsigned short proto);
static int has_wext(int sock_fd, const char *device, char *ebuf);
static int enter_rfmon_mode_wext(pcap_t *handle, int sock_fd,
const char *device);
@@ -362,7 +362,7 @@ pcap_can_set_rfmon_linux(pcap_t *p)
* (We assume that if we have Wireless Extensions support
* we also have PF_PACKET support.)
*/
- sock_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
+ sock_fd = socket(PF_PACKET, SOCK_RAW, handle->opt.proto);
if (sock_fd == -1) {
(void)snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
"socket: %s", pcap_strerror(errno));
@@ -522,6 +522,9 @@ pcap_activate_linux(pcap_t *handle)
handle->read_op = pcap_read_linux;
handle->stats_op = pcap_stats_linux;
+ if (handle->opt.proto < 0)
+ handle->opt.proto = (int) htons(ETH_P_ALL);
+
/*
* The "any" device is a special device which causes us not
* to bind to a particular device and thus to look at all
@@ -1673,8 +1676,8 @@ activate_new(pcap_t *handle)
* try a SOCK_RAW socket for the raw interface.
*/
sock_fd = is_any_device ?
- socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) :
- socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
+ socket(PF_PACKET, SOCK_DGRAM, handle->opt.proto) :
+ socket(PF_PACKET, SOCK_RAW, handle->opt.proto);
if (sock_fd == -1) {
snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "socket: %s",
@@ -1763,7 +1766,7 @@ activate_new(pcap_t *handle)
return PCAP_ERROR;
}
sock_fd = socket(PF_PACKET, SOCK_DGRAM,
- htons(ETH_P_ALL));
+ handle->opt.proto);
if (sock_fd == -1) {
snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"socket: %s", pcap_strerror(errno));
@@ -1815,7 +1818,7 @@ activate_new(pcap_t *handle)
}
if ((err = iface_bind(sock_fd, handle->md.ifindex,
- handle->errbuf)) != 1) {
+ handle->errbuf, handle->opt.proto)) != 1) {
close(sock_fd);
if (err < 0)
return err;
@@ -2440,7 +2443,7 @@ iface_get_id(int fd, const char *device,
* or a PCAP_ERROR_ value on a hard error.
*/
static int
-iface_bind(int fd, int ifindex, char *ebuf)
+iface_bind(int fd, int ifindex, char *ebuf, unsigned short proto)
{
struct sockaddr_ll sll;
int err;
@@ -2449,7 +2452,7 @@ iface_bind(int fd, int ifindex, char *eb
memset(&sll, 0, sizeof(sll));
sll.sll_family = AF_PACKET;
sll.sll_ifindex = ifindex;
- sll.sll_protocol = htons(ETH_P_ALL);
+ sll.sll_protocol = proto;
if (bind(fd, (struct sockaddr *) &sll, sizeof(sll)) == -1) {
if (errno == ENETDOWN) {
@@ -3119,7 +3122,7 @@ activate_old(pcap_t *handle)
/* Open the socket */
- handle->fd = socket(PF_INET, SOCK_PACKET, htons(ETH_P_ALL));
+ handle->fd = socket(PF_INET, SOCK_PACKET, handle->opt.proto);
if (handle->fd == -1) {
snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"socket: %s", pcap_strerror(errno));
--- a/pcap.c
+++ b/pcap.c
@@ -152,6 +152,8 @@ pcap_create_common(const char *source, c
pcap_set_snaplen(p, 65535); /* max packet size */
p->opt.promisc = 0;
p->opt.buffer_size = 0;
+ p->opt.proto = -1;
+
return (p);
}
@@ -212,6 +214,15 @@ pcap_set_buffer_size(pcap_t *p, int buff
}
int
+pcap_set_protocol(pcap_t *p, unsigned short proto)
+{
+ if (pcap_check_activated(p))
+ return PCAP_ERROR_ACTIVATED;
+ p->opt.proto = proto;
+ return 0;
+}
+
+int
pcap_activate(pcap_t *p)
{
int status;
--- a/pcap/pcap.h
+++ b/pcap/pcap.h
@@ -61,6 +61,7 @@ extern "C" {
#define PCAP_VERSION_MINOR 4
#define PCAP_ERRBUF_SIZE 256
+#define HAS_PROTO_EXTENSION
/*
* Compatibility for systems that have a bpf.h that
@@ -263,6 +264,7 @@ int pcap_can_set_rfmon(pcap_t *);
int pcap_set_rfmon(pcap_t *, int);
int pcap_set_timeout(pcap_t *, int);
int pcap_set_buffer_size(pcap_t *, int);
+int pcap_set_protocol(pcap_t *, unsigned short);
int pcap_activate(pcap_t *);
pcap_t *pcap_open_live(const char *, int, int, int, char *);