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XANTRONIX Development 2018-12-16 02:11:53 -06:00
commit 8a202ebc6d
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11
Makefile Normal file
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all:
$(MAKE) -C src all
$(MAKE) -C examples all
install:
$(MAKE) -C src install
$(MAKE) -C examples install
clean:
$(MAKE) -C src clean
$(MAKE) -C examples clean

100
configure vendored Executable file
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#! /bin/sh
OS=`uname -s`
DEBUG=0
create_linux_config_h() {
cat <<EOF > src/config.h
#ifndef _CONFIG_H
#define _CONFIG_H
#include <endian.h>
#endif /* _CONFIG_H */
EOF
}
create_darwin_config_h() {
cat <<EOF > src/config.h
#ifndef _CONFIG_H
#define _CONFIG_H
#include <architecture/byte_order.h>
#ifdef __LITTLE_ENDIAN__
#define __DO_SWAP_BYTES
#endif /* _DO_SWAP_BYTES */
#endif /* _CONFIG_H */
EOF
}
create_common_build_mk() {
if [ "$DEBUG" = 1 ]; then
cat <<'EOF' > mk/build.mk
CGFLAGS = -g -fno-inline
EOF
else
cat <<'EOF' > mk/build.mk
CGFLAGS =
EOF
fi
cat <<'EOF' >> mk/build.mk
CWFLAGS = -Wall
COFLAGS = -O2
CFLAGS = $(CGFLAGS) $(CWFLAGS) $(COFLAGS)
EOF
}
create_linux_build_mk() {
create_common_build_mk $@
cat <<'EOF' >> mk/build.mk
LLFLAGS = -shared -Wl,-soname=$(SONAME)
STATIC = lib$(LIBNAME).a
SONAME_SHORT = lib$(LIBNAME).so
SONAME = $(SONAME_SHORT).$(VERSION_MAJOR)
SONAME_FULL = $(SONAME_SHORT).$(VERSION)
PREFIX = /usr/local
EOF
}
create_darwin_build_mk() {
create_common_build_mk $@
cat <<'EOF' >> mk/build.mk
LLFLAGS = -dynamiclib -current_version $(VERSION)
STATIC = lib$(LIBNAME).a
SONAME_SHORT = lib$(LIBNAME).dylib
SONAME = lib$(LIBNAME).$(VERSION_MAJOR).dylib
SONAME_FULL = lib$(LIBNAME).$(VERSION).dylib
PREFIX = /usr/local
EOF
}
for arg in $@; do
case $arg in
"--enable-debug")
DEBUG=1
;;
esac
done
if [ ! -d "mk" ]; then
mkdir -m 0755 mk
fi
case $OS in
Linux)
create_linux_config_h
create_linux_build_mk
;;
Darwin)
create_darwin_config_h
create_darwin_build_mk
;;
esac

30
include/hexagram/pcapng.h Normal file
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#ifndef _HEXAGRAM_PCAPNG_H
#define _HEXAGRAM_PCAPNG_H
#include <stdint.h>
enum {
HEXAGRAM_PCAPNG_ERROR_OK = 0,
HEXAGRAM_PCAPNG_ERROR_IO = 1,
HEXAGRAM_PCAPNG_ERROR_TRUNCATED = 2,
HEXAGRAM_PCAPNG_ERROR_HANDLER = 3
} hexagram_pcapng_error;
typedef struct _hexagram_pcapng_header {
uint32_t type,
length;
} hexagram_pcapng_header;
typedef struct _hexagram_pcapng_footer {
uint32_t length;
} hexagram_pcapng_footer;
typedef int (hexagram_pcapng_block_handler)(int fd,
uint32_t type,
uint32_t length);
ssize_t hexagram_pcapng_stream_read(int fd,
hexagram_pcapng_block_handler *handler,
int *error);
#endif /* _HEXAGRAM_PCAPNG_H */

58
src/Makefile Normal file
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include ../mk/build.mk
INCLUDE_PATH = ../include
HEADER_SUBDIR = hexagram
CC = $(CROSS)cc
CFLAGS += -fPIC -I$(INCLUDE_PATH)
LDFLAGS =
HEADERS = pcapng.h
OBJS = pcapng.o
VERSION_MAJOR = 0
VERSION_MINOR = 0.1
VERSION = $(VERSION_MAJOR).$(VERSION_MINOR)
LIBNAME = hexagram
HEADERS_BUILD = $(addprefix $(INCLUDE_PATH)/$(HEADER_SUBDIR)/, $(HEADERS))
AR = $(CROSS)ar
RANLIB = $(CROSS)ranlib
RM = /bin/rm
LN = /bin/ln
RMDIR = /bin/rmdir
INSTALL = /usr/bin/install
all: $(STATIC) $(SONAME_FULL) $(SONAME) $(SONAME_SHORT)
$(STATIC): $(OBJS)
$(AR) rc $(STATIC) $(OBJS)
$(RANLIB) $(STATIC)
$(SONAME_FULL): $(OBJS)
$(CC) $(LLFLAGS) $(OBJS) $(LDFLAGS) -o $(SONAME_FULL)
$(SONAME): $(SONAME_FULL)
$(LN) -s $< $@
$(SONAME_SHORT): $(SONAME_FULL)
$(LN) -s $< $@
$(OBJS): %.o: %.c $(HEADERS_BUILD)
$(CC) $(CFLAGS) -c $<
install: $(SONAME_FULL) $(STATIC)
$(INSTALL) -d -m 0755 $(PREFIX)/lib
$(INSTALL) -c -m 0644 $(STATIC) $(PREFIX)/lib
$(INSTALL) -c -m 0755 $(SONAME_FULL) $(PREFIX)/lib
$(LN) -s -f $(SONAME_FULL) $(PREFIX)/lib/$(SONAME)
$(LN) -s -f $(SONAME_FULL) $(PREFIX)/lib/$(SONAME_SHORT)
$(INSTALL) -d -m 0755 $(PREFIX)/include/$(HEADER_SUBDIR)
$(INSTALL) -c -m 0644 $(HEADERS_BUILD) $(PREFIX)/include/$(HEADER_SUBDIR)
clean:
$(RM) -f $(SONAME_SHORT) $(SONAME) $(SONAME_FULL) $(STATIC) $(OBJS)

65
src/pcapng.c Normal file
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#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include <inttypes.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
ssize_t hexagram_pcapng_stream_read(fd, handler, error)
int fd;
hexagram_pcapng_block_handler *handler;
int *error;
{
hexagram_pcapng_header header;
hexagram_pcapng_footer footer;
ssize_t total = 0;
while (1) {
ssize_t readlen;
size_t bodylen;
off_t seeklen;
if ((readlen = read(fd, &header, sizeof(header))) < 0) {
*error = HEXAGRAM_PCAPNG_ERROR_IO;
goto error_io;
} else if (readlen == 0) {
goto done;
} else if (readlen < sizeof(header)) {
*error = HEXAGRAM_PCAPNG_ERROR_TRUNCATED;
goto error_io;
}
total += readlen;
bodylen = header.length - sizeof(header) - sizeof(footer);
if (handler(fd, header.type, header.length) < 0) {
*error = HEXAGRAM_PCAPNG_ERROR_HANDLER;
goto error_io;
}
if ((readlen = read(fd, &footer, sizeof(footer))) < 0) {
*error = HEXAGRAM_PCAPNG_ERROR_IO;
goto error_io;
} else if (readlen == 0) {
goto done;
} else if (readlen < sizeof(footer)) {
*error = HEXAGRAM_PCAPNG_ERROR_TRUNCATED;
goto error_io;
}
}
*error = HEXAGRAM_PCAPNG_ERROR_OK;
return total;
error_io:
return -1;
}