OK, Here is the function in perl, it ain't the best lookin code I have
ever seen... Tho perl is rarely good looking to me, I had to do some
things to get it to work, some of which are not great... For example
when the dmi_table function is called I didn't use the DWORD and WORD
macros that take into account endianess, you might want to write a
function that performs the operation of those macros. Another thing
is that I couldn't seem to get perl to work with u8, u16, and u32...
So C functions that I called directly from perl I had to hack a little
to get them to work (ie I had to change u16 to int, and u8 to char
etc... it also didnt seem to like unsigned...) In other words perl
considers scalars signed, and if I tried to call a function that takes
an unsigned int as a param then perl wouldn't let me pass a scalar
into that param, I had to make it signed.... which kind of sucks,
maybe you can find a way around this problem... This means that I had
to change the interface to dmi_table, it is included below, if you
just copy and paste the code below into a perl script and try to run
it as is you will notice that it will fail. You will have to comment
out the dmi_table function that is in the dmidecode.c file to get it
to work. Anyhow below is all of the code I had to have in my perl
file... Try and get it to run, dont forget to comment out dmi_table in
the dmidecode.c file, and fixup the -I include paths on the first line
of the script.
Let me know how it goes, also sorry about #including .c files... I
hate that... but it made this little project a bit easier...Also
please excuse all lines that got split in half
#!/usr/bin/perl -I<basedir>/Inline-0.44
-I<basedir>/dl/Inline-0.44/blib/lib/
use Inline C;
dmimain();
sub dmimain
{
$fp = 0xF0000;
$devmem = "/dev/mem";
if ($#ARGV == 0)
{
$devmem = $ARGV[0];
}
$fd = c_open($devmem);
if ($fd == -1)
{
die "Unable to open $devmem\n";
}
if (c_lseek($fd, $fp) == -1)
{
die "Unable to lseek $devmem\n";
}
print_version();
while ($fp < 0xFFFFF)
{
$buf1 = q_myread($fd, 0x10, $devmem);
$fp += 0x10;
if (($buf1 =~ /^_SM_/) && ($fp < 0xFFFFF))
{
@spbuf = split(/ */,$buf1);
for ($i = 0; $i < 0x10; $i++)
{
vec($vecbuf, $i, 8) = ord($spbuf[$i]);
}
for ($i = 0; $i < 0x10; $i++)
{
vec($vecbuf, $i+0x10, 8) = ord(q_myread($fd, 1, $devmem));
$buf2 .= chr(vec($vecbuf, $i+0x10,8));
}
$fp += 0x10;
if ((q_checksum($vecbuf, ord ($spbuf[5])))
&& ($buf2 =~ /_DMI_/))
{
#should really use DWORD, and WORD macros here!!!
$base = (vec($vecbuf, 0x1b, 8) << 24) + (vec($vecbuf,
0x1a, 8) << 16) + (vec($vecbuf, 0x19, 8) << 8) + (vec($vecbuf, 0x18,
8));
$len = (vec($vecbuf, 0x17, 8) << 8) + (vec($vecbuf, 0x16,
8));
$num = (vec($vecbuf, 0x1d, 8) << 8) + (vec($vecbuf, 0x1c,
8));
$ver = (vec($vecbuf, 0x06, 8) << 8) + (vec($vecbuf, 0x07,
8));
printf("SMBIOS %u.%u present.\n", ord($spbuf[0x06]),
ord($spbuf[0x07]));
dmi_table($fd, $base, $len, $num, $ver, "dmidecode",
$devmem);
c_lseek($fd, $fp);
}
else
{
if (($buf1 =~ /_DMI_/) && (q_checksum($vecbuf, 0xF)))
{
$base = (vec($vecbuf, 0x0b, 8) << 24) +
(vec($vecbuf, 0x0a, 8) << 16) + (vec($vecbuf, 0x09, 8) << 8) +
(vec($vecbuf, 0x08, 8));
$len = (vec($vecbuf, 0x07, 8) << 8) + (vec($vecbuf,
0x06, 8));
$num = (vec($vecbuf, 0x0d, 8) << 8) + (vec($vecbuf,
0x0c, 8));
$ver = ((vec($vecbuf, 0x0e, 8) & 0xF0) << 4) +
(vec($vecbuf, 0x0e, 8) & 0x0F);
printf("Legacy DMI %u.%u present.\n", ord($spbuf[0x0E])
>> 4, ord($spbuf[0x0E]) & 0xF);
dmi_table($fd, $base, $len, $num, $ver, "dmidecode",
$devmem);
c_lseek($fd, $fp);
}
}
}
}
close(FD);
return 0;
}
#here is the C code I had to write/modify to get this to work:
__END__
__C__
#include "dmidecode.c"
#include "util.c"
#define JLD_MAX_BUF_SIZE 0x40
static char buf[JLD_MAX_BUF_SIZE];
char* q_myread(int fd, size_t count, const char* prefix)
{
ssize_t r=1;
size_t r2=0;
if (JLD_MAX_BUF_SIZE < count)
{
fprintf(stderr, "count is too large, please increase
JLD_MAX_BUF_SIZE to %x\n", count+1);
exit (1);
}
memset(buf, 0, JLD_MAX_BUF_SIZE);
while(r2!=count && r!=0)
{
r=read(fd, buf+r2, count-r2);
if(r==-1)
{
if(errno!=EINTR)
{
close(fd);
perror(prefix);
exit(1);
}
}
else
{
r2+=r;
}
}
if(r2!=count)
{
close(fd);
fprintf(stderr, "%s: Unexpected end of file\n", prefix);
exit(1);
}
return buf;
}
char q_get_data(const char* data, int i)
{
int q;
for (q = 0; q < 0x10; q++) {
printf("* %x %c\n", data[q]);
}
return data[i];
}
void print_data(const char* d)
{
int i;
for (i = 0; i < 0x20; i++) {
printf("%x %x %c\n", i, (unsigned char) d[i], d[i]);
}
}
int c_open(char* filename)
{
return open(filename, O_RDONLY);
}
int c_lseek(int fd, int fp)
{
return lseek(fd, fp, SEEK_SET);
}
int c_close(int fd)
{
return close(fd);
}
void print_version()
{
printf("# dmidecode %s -- ported by jeanluis-ga\n", VERSION);
}
int q_checksum(const char *buf, size_t len)
{
u8 sum=0;
size_t a;
for(a=0; a<len; a++)
{
sum+=buf[a];
}
return (sum==0);
}
void dmi_table(int fd, long base, int len, int num, int ver, const
char *pname, const char *devmem)
{
u8 *buf;
u8 *data;
int i=0;
#ifdef USE_MMAP
div_t mmbase;
size_t psize;
void *mmp;
#endif /* USE_MMAP */
printf("%u structures occupying %u bytes.\n",
num, len);
printf("Table at 0x%08X.\n",
base);
#ifdef USE_MMAP
psize=getpagesize();
mmbase=div(base, psize);
/*
* We need PROT_WRITE for ASCII filtering in dmi_string. Do NOT
change MAP_PRIVATE
* to MAP_SHARED unless you also remove PROT_WRITE and disable ASCII
filtering, because
* we DO NOT WANT to write to /dev/mem. Thanks a lot to Gabriel Forte
for helping
* me hunting down an annoying bug related to this.
*/
mmp=mmap(0, mmbase.rem+len, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd,
mmbase.quot*psize);
if(mmp==MAP_FAILED)
{
perror("mmap");
return;
}
buf=(u8 *)mmp+mmbase.rem;
#else /* USE_MMAP */
if((buf=malloc(len))==NULL)
{
perror(pname);
return;
}
if(lseek(fd, (off_t)base, SEEK_SET)==-1)
{
perror(devmem);
return;
}
if(myread(fd, buf, len, devmem)==-1)
{
free(buf);
printf("Table is unreachable, sorry. Try compiling dmidecode with
-DUSE_MMAP.\n"
"This problem is known on the IBM T23, T30 and X30 laptops, the
Fujitsu-Siemens\n"
"S-4582 laptop as well as IA-64 systems. If your system differ,
please report\n");
exit(1);
}
#endif /* USE_MMAP */
data=buf;
while(i<num && data+sizeof(struct dmi_header)<=buf+len)
{
u8 *next;
struct dmi_header *h=(struct dmi_header *)data;
printf("Handle 0x%04X\n\tDMI type %d, %d bytes.\n",
HANDLE(h), h->type, h->length);
/* look for the next handle */
next=data+h->length;
while(next-buf+1<len && (next[0]!=0 || next[1]!=0))
next++;
next+=2;
if(next-buf<=len)
dmi_decode(data, ver);
else
printf("\t<TRUNCATED>\n");
data=next;
i++;
}
if(i!=num)
printf("Wrong DMI structures count: %d announced, only %d
decoded.\n",
num, i);
if(data-buf!=len)
printf("Wrong DMI structures length: %d bytes announced, structures
occupy %d bytes.\n",
len, (unsigned int)(data-buf));
#ifdef USE_MMAP
if(munmap(mmp, mmbase.rem+len)==-1)
perror("munmap");
#else /* USE_MMAP */
free(buf);
#endif /* USE_MMAP */
}
Please try this out, and if you have ANY comments, questions,
concerns, hate mail :D, or whatever just let me know, I will try and
respond quickly...
Thanks,
--jld |
Clarification of Answer by
jeanluis-ga
on
28 Aug 2003 15:33 PDT
Hmmm there isn't much on this problem on the web...
The only thing I could find that is close is the following:
http://www.mail-archive.com/inline%40perl.org/msg00776.html
Which doesn't even resolve the issue... This calls for drastic
measures..
We are going to have to debug this thing... There are a number of
things we can try.... first thing I can think of is for you to try and
use my Socket.pm file, my advice is the following:
1) BACKUP YOUR Socket.pm file!!!
2) Then copy/paste the following test into a new file called Socket.pm
and put in the same location as your existing Socket.pm...
3) Then cross your fingers and run it...
If this fails (with the same error) then I would try to write a
*simple* perl script that attempts to use the socket module... If that
fails with the same error then we will have to drink a beer, and
really hunker down.
So let me know the results, if this fixes the problem then GREAT! If
it fixes the problem but a new problem arises then let me know and we
will keep on keeping on...
Everything after the line that says package Socket; is my Socket.pm
file (Including the line with 1; at the VERY end)
package Socket;
our($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
$VERSION = "1.75";
=head1 NAME
Socket, sockaddr_in, sockaddr_un, inet_aton, inet_ntoa - load the C
socket.h defines and structure manipulators
=head1 SYNOPSIS
use Socket;
$proto = getprotobyname('udp');
socket(Socket_Handle, PF_INET, SOCK_DGRAM, $proto);
$iaddr = gethostbyname('hishost.com');
$port = getservbyname('time', 'udp');
$sin = sockaddr_in($port, $iaddr);
send(Socket_Handle, 0, 0, $sin);
$proto = getprotobyname('tcp');
socket(Socket_Handle, PF_INET, SOCK_STREAM, $proto);
$port = getservbyname('smtp', 'tcp');
$sin = sockaddr_in($port,inet_aton("127.1"));
$sin = sockaddr_in(7,inet_aton("localhost"));
$sin = sockaddr_in(7,INADDR_LOOPBACK);
connect(Socket_Handle,$sin);
($port, $iaddr) = sockaddr_in(getpeername(Socket_Handle));
$peer_host = gethostbyaddr($iaddr, AF_INET);
$peer_addr = inet_ntoa($iaddr);
$proto = getprotobyname('tcp');
socket(Socket_Handle, PF_UNIX, SOCK_STREAM, $proto);
unlink('/tmp/usock');
$sun = sockaddr_un('/tmp/usock');
connect(Socket_Handle,$sun);
=head1 DESCRIPTION
This module is just a translation of the C F<socket.h> file.
Unlike the old mechanism of requiring a translated F<socket.ph>
file, this uses the B<h2xs> program (see the Perl source distribution)
and your native C compiler. This means that it has a
far more likely chance of getting the numbers right. This includes
all of the commonly used pound-defines like AF_INET, SOCK_STREAM, etc.
Also, some common socket "newline" constants are provided: the
constants C<CR>, C<LF>, and C<CRLF>, as well as C<$CR>, C<$LF>, and
C<$CRLF>, which map to C<\015>, C<\012>, and C<\015\012>. If you do
not want to use the literal characters in your programs, then use
the constants provided here. They are not exported by default, but
can
be imported individually, and with the C<:crlf> export tag:
use Socket qw(:DEFAULT :crlf);
In addition, some structure manipulation functions are available:
=over 4
=item inet_aton HOSTNAME
Takes a string giving the name of a host, and translates that to an
opaque string (if programming in C, struct in_addr). Takes arguments
of both the 'rtfm.mit.edu' type and '18.181.0.24'. If the host name
cannot be resolved, returns undef. For multi-homed hosts (hosts with
more than one address), the first address found is returned.
For portability do not assume that the result of inet_aton() is 32
bits wide, in other words, that it would contain only the IPv4 address
in network order.
=item inet_ntoa IP_ADDRESS
Takes a string (an opaque string as returned by inet_aton(),
or a v-string representing the four octets of the IPv4 address in
network order) and translates it into a string of the form 'd.d.d.d'
where the 'd's are numbers less than 256 (the normal human-readable
four dotted number notation for Internet addresses).
=item INADDR_ANY
Note: does not return a number, but a packed string.
Returns the 4-byte wildcard ip address which specifies any
of the hosts ip addresses. (A particular machine can have
more than one ip address, each address corresponding to
a particular network interface. This wildcard address
allows you to bind to all of them simultaneously.)
Normally equivalent to inet_aton('0.0.0.0').
=item INADDR_BROADCAST
Note: does not return a number, but a packed string.
Returns the 4-byte 'this-lan' ip broadcast address.
This can be useful for some protocols to solicit information
from all servers on the same LAN cable.
Normally equivalent to inet_aton('255.255.255.255').
=item INADDR_LOOPBACK
Note - does not return a number.
Returns the 4-byte loopback address. Normally equivalent
to inet_aton('localhost').
=item INADDR_NONE
Note - does not return a number.
Returns the 4-byte 'invalid' ip address. Normally equivalent
to inet_aton('255.255.255.255').
=item sockaddr_family SOCKADDR
Takes a sockaddr structure (as returned by pack_sockaddr_in(),
pack_sockaddr_un() or the perl builtin functions getsockname() and
getpeername()) and returns the address family tag. It will match the
constant AF_INET for a sockaddr_in and AF_UNIX for a sockaddr_un. It
can be used to figure out what unpacker to use for a sockaddr of
unknown type.
=item sockaddr_in PORT, ADDRESS
=item sockaddr_in SOCKADDR_IN
In a list context, unpacks its SOCKADDR_IN argument and returns an
array
consisting of (PORT, ADDRESS). In a scalar context, packs its (PORT,
ADDRESS) arguments as a SOCKADDR_IN and returns it. If this is
confusing,
use pack_sockaddr_in() and unpack_sockaddr_in() explicitly.
=item pack_sockaddr_in PORT, IP_ADDRESS
Takes two arguments, a port number and an opaque string, IP_ADDRESS
(as returned by inet_aton(), or a v-string). Returns the sockaddr_in
structure with those arguments packed in with AF_INET filled in. For
Internet domain sockets, this structure is normally what you need for
the arguments in bind(), connect(), and send(), and is also returned
by getpeername(), getsockname() and recv().
=item unpack_sockaddr_in SOCKADDR_IN
Takes a sockaddr_in structure (as returned by pack_sockaddr_in()) and
returns an array of two elements: the port and an opaque string
representing the IP address (you can use inet_ntoa() to convert the
address to the four-dotted numeric format). Will croak if the
structure does not have AF_INET in the right place.
=item sockaddr_un PATHNAME
=item sockaddr_un SOCKADDR_UN
In a list context, unpacks its SOCKADDR_UN argument and returns an
array
consisting of (PATHNAME). In a scalar context, packs its PATHNAME
arguments as a SOCKADDR_UN and returns it. If this is confusing, use
pack_sockaddr_un() and unpack_sockaddr_un() explicitly.
These are only supported if your system has E<lt>F<sys/un.h>E<gt>.
=item pack_sockaddr_un PATH
Takes one argument, a pathname. Returns the sockaddr_un structure with
that path packed in with AF_UNIX filled in. For unix domain sockets,
this
structure is normally what you need for the arguments in bind(),
connect(), and send(), and is also returned by getpeername(),
getsockname() and recv().
=item unpack_sockaddr_un SOCKADDR_UN
Takes a sockaddr_un structure (as returned by pack_sockaddr_un())
and returns the pathname. Will croak if the structure does not
have AF_UNIX in the right place.
=back
=cut
use Carp;
use warnings::register;
require Exporter;
use XSLoader ();
@ISA = qw(Exporter);
@EXPORT = qw(
inet_aton inet_ntoa
sockaddr_family
pack_sockaddr_in unpack_sockaddr_in
pack_sockaddr_un unpack_sockaddr_un
sockaddr_in sockaddr_un
INADDR_ANY INADDR_BROADCAST INADDR_LOOPBACK INADDR_NONE
AF_802
AF_AAL
AF_APPLETALK
AF_CCITT
AF_CHAOS
AF_CTF
AF_DATAKIT
AF_DECnet
AF_DLI
AF_ECMA
AF_GOSIP
AF_HYLINK
AF_IMPLINK
AF_INET
AF_INET6
AF_ISO
AF_KEY
AF_LAST
AF_LAT
AF_LINK
AF_MAX
AF_NBS
AF_NIT
AF_NS
AF_OSI
AF_OSINET
AF_PUP
AF_ROUTE
AF_SNA
AF_UNIX
AF_UNSPEC
AF_USER
AF_WAN
AF_X25
IOV_MAX
MSG_BCAST
MSG_BTAG
MSG_CTLFLAGS
MSG_CTLIGNORE
MSG_CTRUNC
MSG_DONTROUTE
MSG_DONTWAIT
MSG_EOF
MSG_EOR
MSG_ERRQUEUE
MSG_ETAG
MSG_FIN
MSG_MAXIOVLEN
MSG_MCAST
MSG_NOSIGNAL
MSG_OOB
MSG_PEEK
MSG_PROXY
MSG_RST
MSG_SYN
MSG_TRUNC
MSG_URG
MSG_WAITALL
MSG_WIRE
PF_802
PF_AAL
PF_APPLETALK
PF_CCITT
PF_CHAOS
PF_CTF
PF_DATAKIT
PF_DECnet
PF_DLI
PF_ECMA
PF_GOSIP
PF_HYLINK
PF_IMPLINK
PF_INET
PF_INET6
PF_ISO
PF_KEY
PF_LAST
PF_LAT
PF_LINK
PF_MAX
PF_NBS
PF_NIT
PF_NS
PF_OSI
PF_OSINET
PF_PUP
PF_ROUTE
PF_SNA
PF_UNIX
PF_UNSPEC
PF_USER
PF_WAN
PF_X25
SCM_CONNECT
SCM_CREDENTIALS
SCM_CREDS
SCM_RIGHTS
SCM_TIMESTAMP
SHUT_RD
SHUT_RDWR
SHUT_WR
SOCK_DGRAM
SOCK_RAW
SOCK_RDM
SOCK_SEQPACKET
SOCK_STREAM
SOL_SOCKET
SOMAXCONN
SO_ACCEPTCONN
SO_ATTACH_FILTER
SO_BACKLOG
SO_BROADCAST
SO_CHAMELEON
SO_DEBUG
SO_DETACH_FILTER
SO_DGRAM_ERRIND
SO_DONTLINGER
SO_DONTROUTE
SO_ERROR
SO_FAMILY
SO_KEEPALIVE
SO_LINGER
SO_OOBINLINE
SO_PASSCRED
SO_PASSIFNAME
SO_PEERCRED
SO_PROTOCOL
SO_PROTOTYPE
SO_RCVBUF
SO_RCVLOWAT
SO_RCVTIMEO
SO_REUSEADDR
SO_REUSEPORT
SO_SECURITY_AUTHENTICATION
SO_SECURITY_ENCRYPTION_NETWORK
SO_SECURITY_ENCRYPTION_TRANSPORT
SO_SNDBUF
SO_SNDLOWAT
SO_SNDTIMEO
SO_STATE
SO_TYPE
SO_USELOOPBACK
SO_XOPEN
SO_XSE
UIO_MAXIOV
);
@EXPORT_OK = qw(CR LF CRLF $CR $LF $CRLF
IPPROTO_TCP
TCP_KEEPALIVE
TCP_MAXRT
TCP_MAXSEG
TCP_NODELAY
TCP_STDURG);
%EXPORT_TAGS = (
crlf => [qw(CR LF CRLF $CR $LF $CRLF)],
all => [@EXPORT, @EXPORT_OK],
);
BEGIN {
sub CR () {"\015"}
sub LF () {"\012"}
sub CRLF () {"\015\012"}
}
*CR = \CR();
*LF = \LF();
*CRLF = \CRLF();
sub sockaddr_in {
if (@_ == 6 && !wantarray) { # perl5.001m compat; use this && die
my($af, $port, @quad) = @_;
warnings::warn "6-ARG sockaddr_in call is deprecated"
if warnings::enabled();
pack_sockaddr_in($port, inet_aton(join('.', @quad)));
} elsif (wantarray) {
croak "usage: (port,iaddr) = sockaddr_in(sin_sv)" unless @_ == 1;
unpack_sockaddr_in(@_);
} else {
croak "usage: sin_sv = sockaddr_in(port,iaddr))" unless @_ == 2;
pack_sockaddr_in(@_);
}
}
sub sockaddr_un {
if (wantarray) {
croak "usage: (filename) = sockaddr_un(sun_sv)" unless @_ == 1;
unpack_sockaddr_un(@_);
} else {
croak "usage: sun_sv = sockaddr_un(filename)" unless @_ == 1;
pack_sockaddr_un(@_);
}
}
sub AUTOLOAD {
my($constname);
($constname = $AUTOLOAD) =~ s/.*:://;
croak "&Socket::constant not defined" if $constname eq 'constant';
my ($error, $val) = constant($constname);
if ($error) {
croak $error;
}
*$AUTOLOAD = sub { $val };
goto &$AUTOLOAD;
}
XSLoader::load 'Socket', $VERSION;
1;
|
