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8ae30d8aac
time.
People keep running into the problem that they upgrade Bro but forget
to recompile their plugins--which can lead to crashes. While the
plugins' API version was supposed to catch this, it's not reliable as
that check may come too late. This change takes a different tack: We
compile a C function into the Bro binary that has Bro's version number
encoded into its name. A plugin can then reference that function. If
the Bro version changes, the function goes away and the plugin won't
load anymore.
I've integrated that function reference into the plugin skeleton code
so that new plugins get it automatically (unless explicitly removed).
I couldn't see a way to do it transparently for already existing
plugins unfortunately.
The version number used for the function name is slightly normalized
to skip any git revision postfixes (i.e., "2.5-xxx" is always treated
as "2.5-git") so that one doesn't need to recompile all plugins after
every master commit. That seems good enough, usually people run into
this when upgrading to a new release.
If one loads an old plugin into a new Bro, the error message looks
like this:
$ bro -NN Demo::Foo
fatal error in /home/robin/bro/master/scripts/base/init-bare.bro, line 1:
cannot load plugin library /home/robin/tmp/p/build//lib/Demo-Foo.linux-x86_64.so:
/home/robin/tmp/p/build//lib/Demo-Foo.linux-x86_64.so: undefined symbol: bro_version_2_5_git_debug
Not the prettiest, but better than a crash!
TODO: I'm still unsure if we should remove the plugin API version
altogetger now. This link-time check should catch everything the API
version does, except for master commits.
242 lines
6.1 KiB
C
242 lines
6.1 KiB
C
/* Old libpcap versions (< 0.6.1) need defining pcap_freecode and
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pcap_compile_nopcap */
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#cmakedefine DONT_HAVE_LIBPCAP_PCAP_FREECODE
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/* should explicitly declare socket() and friends */
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#cmakedefine DO_SOCK_DECL
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/* Define if you have the <getopt.h> header file. */
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#cmakedefine HAVE_GETOPT_H
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/* Define if you have the `getopt_long' function. */
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#cmakedefine HAVE_GETOPT_LONG
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/* We are on a Linux system */
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#cmakedefine HAVE_LINUX
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/* We are on a Mac OS X (Darwin) system */
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#cmakedefine HAVE_DARWIN
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/* Define if you have the `mallinfo' function. */
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#cmakedefine HAVE_MALLINFO
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/* Define if you have the <memory.h> header file. */
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#cmakedefine HAVE_MEMORY_H
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/* Define if you have the <netinet/ether.h> header file */
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#cmakedefine HAVE_NETINET_ETHER_H
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/* Define if you have the <netinet/if_ether.h> header file. */
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#cmakedefine HAVE_NETINET_IF_ETHER_H
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/* Define if you have the <netinet/ip6.h> header file. */
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#cmakedefine HAVE_NETINET_IP6_H
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/* Define if you have the <net/ethernet.h> header file. */
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#cmakedefine HAVE_NET_ETHERNET_H
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/* Define if you have the <net/ethertypes.h> header file. */
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#cmakedefine HAVE_NET_ETHERTYPES_H
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/* have os-proto.h */
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#cmakedefine HAVE_OS_PROTO_H
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/* Define if you have the <pcap-int.h> header file. */
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#cmakedefine HAVE_PCAP_INT_H
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/* line editing & history powers */
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#cmakedefine HAVE_READLINE
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/* Define if you have the `sigaction' function, but not `sigset'. */
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#cmakedefine HAVE_SIGACTION
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/* Define if you have the `sigset' function. */
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#cmakedefine HAVE_SIGSET
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/* Define if you have the `strcasestr' function. */
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#cmakedefine HAVE_STRCASESTR
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/* Define if you have the `strerror' function. */
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#cmakedefine HAVE_STRERROR
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/* Define if you have the `strsep' function. */
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#cmakedefine HAVE_STRSEP
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/* Define if you have the <sys/ethernet.h> header file. */
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#cmakedefine HAVE_SYS_ETHERNET_H
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/* Some libpcap versions use an extra parameter (error) in pcap_compile_nopcap
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*/
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#cmakedefine LIBPCAP_PCAP_COMPILE_NOPCAP_HAS_ERROR_PARAMETER
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/* Include krb5.h */
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#cmakedefine NEED_KRB5_H
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/* Compatibility for Darwin */
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#cmakedefine NEED_NAMESER_COMPAT_H
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/* d2i_x509 uses const char** */
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#cmakedefine OPENSSL_D2I_X509_USES_CONST_CHAR
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/* Define as the return type of signal handlers (`int' or `void'). */
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#define RETSIGTYPE @RETSIGTYPE@
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/* signal function return value */
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#define RETSIGVAL @RETSIGVAL@
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/* have sin_len field in sockaddr_in */
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#cmakedefine SIN_LEN
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/* The size of `long int', as computed by sizeof. */
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#define SIZEOF_LONG_INT @SIZEOF_LONG_INT@
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/* The size of `long long', as computed by sizeof. */
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#define SIZEOF_LONG_LONG @SIZEOF_LONG_LONG@
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/* The size of `void *', as computed by sizeof. */
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#define SIZEOF_VOID_P @SIZEOF_VOID_P@
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/* should we declare syslog() and openlog() */
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#cmakedefine SYSLOG_INT
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/* Define if you have <sys/time.h> */
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#cmakedefine HAVE_SYS_TIME_H
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/* Define if you can safely include both <sys/time.h> and <time.h>. */
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#cmakedefine TIME_WITH_SYS_TIME
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/* GeoIP geographic lookup functionality */
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#cmakedefine USE_GEOIP
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/* Whether the found GeoIP API supports IPv6 Country Edition */
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#cmakedefine HAVE_GEOIP_COUNTRY_EDITION_V6
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/* Whether the found GeoIP API supports IPv6 City Edition */
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#cmakedefine HAVE_GEOIP_CITY_EDITION_REV0_V6
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/* Use Google's perftools */
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#cmakedefine USE_PERFTOOLS_DEBUG
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/* Analyze Mobile IPv6 traffic */
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#cmakedefine ENABLE_MOBILE_IPV6
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/* Use libCurl. */
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#cmakedefine USE_CURL
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/* Use the DataSeries writer. */
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#cmakedefine USE_DATASERIES
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/* Use the ElasticSearch writer. */
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#cmakedefine USE_ELASTICSEARCH
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/* Version number of package */
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#define VERSION "@VERSION@"
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/* whether words are stored with the most significant byte first */
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#cmakedefine WORDS_BIGENDIAN
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/* whether htonll/ntohll is defined in <arpa/inet.h> */
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#cmakedefine HAVE_BYTEORDER_64
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/* ultrix can't hack const */
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#cmakedefine NEED_ULTRIX_CONST_HACK
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#ifdef NEED_ULTRIX_CONST_HACK
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#define const
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#endif
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/* Define int32_t */
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#cmakedefine int32_t @int32_t@
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/* use sigset() instead of signal() */
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#ifdef HAVE_SIGSET
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#define signal sigset
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#endif
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/* define to int if socklen_t not available */
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#cmakedefine socklen_t @socklen_t@
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/* Define u_int16_t */
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#cmakedefine u_int16_t @u_int16_t@
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/* Define u_int32_t */
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#cmakedefine u_int32_t @u_int32_t@
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/* Define u_int8_t */
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#cmakedefine u_int8_t @u_int8_t@
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/* OpenBSD's bpf.h may not declare this data link type, but it's supposed to be
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used consistently for the same purpose on all platforms. */
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#cmakedefine HAVE_DLT_PPP_SERIAL
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#ifndef HAVE_DLT_PPP_SERIAL
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#define DLT_PPP_SERIAL @DLT_PPP_SERIAL@
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#endif
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/* IPv6 Next Header values defined by RFC 3542 */
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#cmakedefine HAVE_IPPROTO_HOPOPTS
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#ifndef HAVE_IPPROTO_HOPOPTS
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#define IPPROTO_HOPOPTS 0
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#endif
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#cmakedefine HAVE_IPPROTO_IPV6
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#ifndef HAVE_IPPROTO_IPV6
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#define IPPROTO_IPV6 41
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#endif
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#cmakedefine HAVE_IPPROTO_IPV4
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#ifndef HAVE_IPPROTO_IPV4
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#define IPPROTO_IPV4 4
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#endif
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#cmakedefine HAVE_IPPROTO_ROUTING
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#ifndef HAVE_IPPROTO_ROUTING
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#define IPPROTO_ROUTING 43
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#endif
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#cmakedefine HAVE_IPPROTO_FRAGMENT
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#ifndef HAVE_IPPROTO_FRAGMENT
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#define IPPROTO_FRAGMENT 44
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#endif
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#cmakedefine HAVE_IPPROTO_ESP
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#ifndef HAVE_IPPROTO_ESP
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#define IPPROTO_ESP 50
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#endif
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#cmakedefine HAVE_IPPROTO_AH
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#ifndef HAVE_IPPROTO_AH
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#define IPPROTO_AH 51
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#endif
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#cmakedefine HAVE_IPPROTO_ICMPV6
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#ifndef HAVE_IPPROTO_ICMPV6
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#define IPPROTO_ICMPV6 58
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#endif
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#cmakedefine HAVE_IPPROTO_NONE
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#ifndef HAVE_IPPROTO_NONE
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#define IPPROTO_NONE 59
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#endif
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#cmakedefine HAVE_IPPROTO_DSTOPTS
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#ifndef HAVE_IPPROTO_DSTOPTS
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#define IPPROTO_DSTOPTS 60
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#endif
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/* IPv6 options structure defined by RFC 3542 */
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#cmakedefine HAVE_IP6_OPT
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/* Common IPv6 extension structure */
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#cmakedefine HAVE_IP6_EXT
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/* String with host architecture (e.g., "linux-x86_64") */
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#define HOST_ARCHITECTURE "@HOST_ARCHITECTURE@"
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/* String with extension of dynamic libraries (e.g., ".so") */
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#define DYNAMIC_PLUGIN_SUFFIX "@CMAKE_SHARED_MODULE_SUFFIX@"
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/* True if we're building outside of the main Bro source code tree. */
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#ifndef BRO_PLUGIN_INTERNAL_BUILD
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#define BRO_PLUGIN_INTERNAL_BUILD @BRO_PLUGIN_INTERNAL_BUILD@
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#endif
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/* A C function that has the Bro version encoded into its name. */
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#define BRO_VERSION_FUNCTION bro_version_@VERSION_C_IDENT@
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern const char* BRO_VERSION_FUNCTION();
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#ifdef __cplusplus
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}
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#endif
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