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socat/filan.c
Gerhard Rieger d34493c18d Added contributors to copyright notices
2016-12-09 21:46:02 +01:00

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/* source: filan.c */
/* Copyright Gerhard Rieger and contributors (see file CHANGES) */
/* Published under the GNU General Public License V.2, see file COPYING */
/* the subroutine filan makes a "FILe descriptor ANalysis". It checks the
type of file descriptor and tries to retrieve as much info about it as
possible without modifying its state.
NOTE: it works on UNIX (kernel) file descriptors, not on libc files! */
#include "config.h"
#include "xioconfig.h" /* what features are enabled */
#include "sysincludes.h"
#include "mytypes.h"
#include "compat.h"
#include "error.h"
#include "sycls.h"
#include "sysutils.h"
#include "filan.h"
struct sockopt {
int so;
char *name;
};
static int filan_streams_analyze(int fd, FILE *outfile);
/* dirty workaround so we dont get an error on AIX when being linked with
libwrap */
int allow_severity, deny_severity;
/* global variables for configuring filan */
bool filan_followsymlinks;
bool filan_rawoutput;
int sockoptan(int fd, const struct sockopt *optname, int socklay, FILE *outfile);
int tcpan(int fd, FILE *outfile);
const char *getfiletypestring(int st_mode);
static int printtime(FILE *outfile, time_t time);
static int headprinted;
/* analyse a file system entry, referred by file name */
int filan_file(const char *filename, FILE *outfile) {
int fd = -1;
int result;
#if HAVE_STAT64
struct stat64 buf = {0};
#else
struct stat buf = {0};
#endif /* !HAVE_STAT64 */
if (filan_followsymlinks) {
#if HAVE_STAT64
result = Stat64(filename, &buf);
#else
result = Stat(filename, &buf);
#endif /* !HAVE_STAT64 */
if (result < 0) {
Warn3("stat(\"%s\", %p): %s", filename, &buf, strerror(errno));
}
} else {
#if HAVE_STAT64
result = Lstat64(filename, &buf);
#else
result = Lstat(filename, &buf);
#endif /* !HAVE_STAT64 */
if (result < 0) {
Warn3("lstat(\"%s\", %p): %s", filename, &buf, strerror(errno));
}
}
switch (buf.st_mode&S_IFMT) {
#ifdef S_IFSOCK
case S_IFSOCK: /* probably, it's useless to make a socket and describe it */
break;
#endif /* S_IFSOCK */
default:
if ((fd =
Open(filename, O_RDONLY|O_NOCTTY|O_NONBLOCK
#ifdef O_LARGEFILE
|O_LARGEFILE
#endif
, 0700))
< 0) {
Warn2("open(\"%s\", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_LARGEFILE, 0700): %s",
filename, strerror(errno));
}
}
result = filan_stat(&buf, fd, -1, outfile);
fputc('\n', outfile);
return result;
}
/* analyze a file descriptor */
int filan_fd(int fd, FILE *outfile) {
#if HAVE_STAT64
struct stat64 buf = {0};
#else
struct stat buf = {0};
#endif /* !HAVE_STAT64 */
int result;
Debug1("checking file descriptor %u", fd);
#if HAVE_STAT64
result = Fstat64(fd, &buf);
#else
result = Fstat(fd, &buf);
#endif /* !HAVE_STAT64 */
if (result < 0) {
if (errno == EBADF) {
Debug2("fstat(%d): %s", fd, strerror(errno));
} else {
Warn2("fstat(%d): %s", fd, strerror(errno));
}
return -1;
}
Debug2("fd %d is a %s", fd, getfiletypestring(buf.st_mode));
result = filan_stat(&buf, fd, fd, outfile);
if (result >= 0) {
/* even more dynamic info */
{ /* see if data is available */
struct pollfd ufds;
ufds.fd = fd;
ufds.events = POLLIN|POLLPRI|POLLOUT
#ifdef POLLRDNORM
|POLLRDNORM
#endif
#ifdef POLLRDBAND
|POLLRDBAND
#endif
|POLLWRNORM
#ifdef POLLWRBAND
|POLLWRBAND
#endif
#ifdef POLLMSG
|POLLMSG
#endif
;
if (Poll(&ufds, 1, 0) < 0) {
Warn4("poll({%d, %hd, %hd}, 1, 0): %s",
ufds.fd, ufds.events, ufds.revents, strerror(errno));
} else {
fputs("poll: ", outfile);
if (ufds.revents & POLLIN) fputs("IN,", outfile);
if (ufds.revents & POLLPRI) fputs("PRI,", outfile);
if (ufds.revents & POLLOUT) fputs("OUT,", outfile);
if (ufds.revents & POLLERR) fputs("ERR,", outfile);
if (ufds.revents & POLLNVAL) fputs("NVAL,", outfile);
#ifdef FIONREAD
if (ufds.revents & POLLIN) {
size_t sizet;
if ((result = Ioctl(fd, FIONREAD, &sizet) >= 0)) {
fprintf (outfile, "; FIONREAD="F_Zu, sizet);
}
}
#endif /* defined(FIONREAD) */
#if _WITH_SOCKET && defined(MSG_DONTWAIT)
if ((ufds.revents & POLLIN) && isasocket(fd)) {
char _peername[SOCKADDR_MAX];
struct sockaddr *pa = (struct sockaddr *)_peername;
struct msghdr msgh = {0};
char peekbuff[1]; /* [0] fails with some compilers */
#if HAVE_STRUCT_IOVEC
struct iovec iovec;
#endif
char ctrlbuff[5120];
ssize_t bytes;
fputs("; ", outfile);
msgh.msg_name = pa;
msgh.msg_namelen = sizeof(*pa);
#if HAVE_STRUCT_IOVEC
iovec.iov_base = peekbuff;
iovec.iov_len = sizeof(peekbuff);
msgh.msg_iov = &iovec;
msgh.msg_iovlen = 1;
#endif
#if HAVE_STRUCT_MSGHDR_MSGCONTROL
msgh.msg_control = ctrlbuff;
#endif
#if HAVE_STRUCT_MSGHDR_MSGCONTROLLEN
msgh.msg_controllen = sizeof(ctrlbuff);
#endif
#if HAVE_STRUCT_MSGHDR_MSGFLAGS
msgh.msg_flags = 0;
#endif
if ((bytes = Recvmsg(fd, &msgh, MSG_PEEK|MSG_DONTWAIT)) < 0) {
Warn1("recvmsg(): %s", strerror(errno));
} else {
fprintf(outfile, "recvmsg="F_Zd", ", bytes);
}
}
#endif /* _WITH_SOCKET && defined(MSG_DONTWAIT) */
}
}
}
fputc('\n', outfile);
return 0;
}
int filan_stat(
#if HAVE_STAT64
struct stat64 *buf
#else
struct stat *buf
#endif /* !HAVE_STAT64 */
, int statfd, int dynfd, FILE *outfile) {
char stdevstr[8];
/* print header */
if (!headprinted) {
if (filan_rawoutput) {
fputs(" FD type\tdevice\tinode\tmode\tlinks\tuid\tgid"
#if HAVE_ST_RDEV
"\trdev"
#endif
"\tsize"
#if HAVE_ST_BLKSIZE
"\tblksize"
#endif
#if HAVE_ST_BLOCKS
"\tblocks"
#endif
"\tatime\t\tmtime\t\tctime\t\tcloexec\tflags"
#if defined(F_GETOWN)
"\tsigown"
#endif
, outfile);
} else /* !rawoutput */ {
fputs(" FD type\tdevice\tinode\tmode\tlinks\tuid\tgid"
#if HAVE_ST_RDEV
"\trdev"
#endif
"\tsize"
#if HAVE_ST_BLKSIZE
"\tblksize"
#endif
#if HAVE_ST_BLOCKS
"\tblocks"
#endif
"\tatime\t\t\t\tmtime\t\t\t\tctime\t\t\t\tcloexec\tflags"
#if defined(F_GETOWN)
"\tsigown"
#endif
, outfile);
} /* endif !rawoutput */
#if defined(F_GETSIG)
fputs("\tsigio", outfile);
#endif /* defined(F_GETSIG) */
fputc('\n', outfile);
headprinted = 1;
}
if (filan_rawoutput) {
snprintf(stdevstr, 8, F_dev, buf->st_dev);
} else {
snprintf(stdevstr, 8, "%hu,%hu", (unsigned short)(buf->st_dev>>8), (unsigned short)(buf->st_dev&0xff));
}
fprintf(outfile, "%4d: %s\t%s\t"
#if HAVE_STAT64
F_st64_ino
#else
F_st_ino
#endif /* HAVE_STAT64 */
"\t"F_mode"\t"F_st_nlink"\t"F_uid"\t"F_gid
#if HAVE_ST_RDEV
"\t%hu,%hu"
#endif
"\t"
#if HAVE_STAT64
F_st64_size
#else
F_st_size
#endif /* HAVE_STAT64 */
#if HAVE_ST_BLKSIZE
"\t"F_st_blksize
#endif
#if HAVE_ST_BLOCKS
#if HAVE_STAT64
"\t"F_st64_blocks
#else
"\t"F_st_blocks
#endif /* HAVE_STAT64 */
#endif
,
(dynfd>=0?dynfd:statfd), getfiletypestring(buf->st_mode),
stdevstr,
buf->st_ino,
buf->st_mode, buf->st_nlink, buf->st_uid,
buf->st_gid,
#if HAVE_ST_RDEV
(unsigned short)(buf->st_rdev>>8), (unsigned short)(buf->st_rdev&0xff),
#endif
buf->st_size
#if HAVE_ST_BLKSIZE
, buf->st_blksize
#endif
#if HAVE_ST_BLOCKS
, buf->st_blocks /* on Linux, this applies to stat and stat64 */
#endif
);
printtime(outfile, buf->st_atime);
printtime(outfile, buf->st_mtime);
printtime(outfile, buf->st_ctime);
#if 0
{
fputc('\t', outfile);
time = asctime(localtime(&buf->st_mtime));
if (strchr(time, '\n')) *strchr(time, '\n') = '\0';
fputs(time, outfile);
fputc('\t', outfile);
time = asctime(localtime(&buf->st_ctime));
if (strchr(time, '\n')) *strchr(time, '\n') = '\0';
fputs(time, outfile);
}
#endif
/* here comes dynamic info - it is only meaningful with preexisting FDs */
if (dynfd >= 0) { /*!indent */
int cloexec, flags;
#if defined(F_GETOWN)
int sigown;
#endif
#if defined(F_GETSIG)
int sigio;
#endif /* defined(F_GETSIG) */
cloexec = Fcntl(dynfd, F_GETFD);
flags = Fcntl(dynfd, F_GETFL);
#if defined(F_GETOWN)
sigown = Fcntl(dynfd, F_GETOWN);
#endif
#if defined(F_GETSIG)
sigio = Fcntl(dynfd, F_GETSIG);
#endif /* defined(F_GETSIG) */
fprintf(outfile, "\t%d\tx%06x", cloexec, flags);
#if defined(F_GETOWN)
fprintf(outfile, "\t%d", sigown);
#endif
#if defined(F_GETSIG)
fprintf(outfile, "\t%d", sigio);
#endif /* defined(F_GETSIG) */
} else {
fputs("\t\t"
#if defined(F_GETOWN)
"\t"
#endif
#if defined(F_GETSIG)
"\t"
#endif /* defined(F_GETSIG) */
, outfile);
}
/* ever heard of POSIX streams? here we handle these */
filan_streams_analyze(statfd, outfile);
/* now see for type specific infos */
if (statfd >= 0) { /*!indent */
switch (buf->st_mode&S_IFMT) {
case (S_IFIFO): /* 1, FIFO */
break;
case (S_IFCHR): /* 2, character device */
cdevan(statfd, outfile);
break;
case (S_IFDIR): /* 4, directory */
break;
case (S_IFBLK): /* 6, block device */
break;
case (S_IFREG): /* 8, regular file */
break;
case (S_IFLNK): /* 10, symbolic link */
break;
#ifdef S_IFSOCK
case (S_IFSOCK): /* 12, socket */
#if _WITH_SOCKET
sockan(statfd, outfile);
#else
Warn("SOCKET support not compiled in");
return -1;
#endif /* !_WITH_SOCKET */
break;
#endif /* S_IFSOCK */
}
}
/* ioctl() */
return 0;
}
#if LATER
int fdinfo(int fd) {
int result;
result = Fcntl(fd, F_GETFD);
fcntl(fd, F_GETFL, );
fcntl(fd, F_GETLK, );
#ifdef F_GETOWN
fcntl(fd, F_GETOWN, );
#endif
#ifdef F_GETSIG
fcntl(fd, F_GETSIG, );
#endif
}
int devinfo(int fd) {
ioctl();
}
#endif
/* returns 0 on success (not a stream descriptor, or no module)
returns <0 on failure */
static int filan_streams_analyze(int fd, FILE *outfile) {
#ifdef I_LIST
# define SL_NMODS 8 /* max number of module names we can store */
struct str_list modnames;
int i;
if (!isastream(fd)) {
fprintf(outfile, "\t(no STREAMS modules)");
return 0;
}
#if 0 /* uncomment for debugging */
fprintf(outfile, "\tfind=%d", ioctl(fd, I_FIND, "ldterm"));
#endif
modnames.sl_nmods = ioctl(fd, I_LIST, 0);
if (modnames.sl_nmods < 0) {
fprintf(stderr, "ioctl(%d, I_LIST, 0): %s\n", fd, strerror(errno));
return -1;
}
modnames.sl_modlist = Malloc(modnames.sl_nmods*(sizeof(struct str_mlist)));
if (modnames.sl_modlist == NULL) {
fprintf(stderr, "out of memory\n");
return -1;
}
if (ioctl(fd, I_LIST, &modnames) < 0) {
fprintf(stderr, "ioctl(%d, I_LIST, %p): %s\n",
fd, &modnames, strerror(errno));
free(modnames.sl_modlist);
return -1;
}
fprintf(outfile, "\tSTREAMS: ");
for (i = 0; i < modnames.sl_nmods; ++i) {
fprintf(outfile, "\"%s\"", modnames.sl_modlist[i].l_name);
if (i+1 < modnames.sl_nmods) fputc(',', outfile);
}
free(modnames.sl_modlist);
#endif /* defined(I_LIST) */
return 0;
}
/* character device analysis */
int cdevan(int fd, FILE *outfile) {
int ret;
#if _WITH_TERMIOS
if ((ret = Isatty(fd)) < 0) {
Warn2("isatty(%d): %s", fd, strerror(errno));
return -1;
}
if (ret > 0) {
struct termios termarg;
char *name;
int i;
if ((name = Ttyname(fd)) == NULL) {
/*Warn2("ttyname(%d): %s", fd, strerror(errno));*/
fputs("\tNULL", outfile);
} else {
fprintf(outfile, "\t%s", name);
}
if (Tcgetattr(fd, &termarg) < 0) {
Warn3("tcgetattr(%d, %p): %s", fd, &termarg, strerror(errno));
return -1;
}
fprintf(outfile, " \tIFLAGS=%08x OFLAGS=%08x CFLAGS=%08x LFLAGS=%08x",
(unsigned int)termarg.c_iflag,
(unsigned int)termarg.c_oflag,
(unsigned int)termarg.c_cflag,
(unsigned int)termarg.c_lflag);
/* and the control characters */
if (filan_rawoutput) {
for (i=0; i<NCCS; ++i) {
fprintf(outfile, " cc[%d]=%d", i, termarg.c_cc[i]);
}
} else {
for (i=0; i<NCCS; ++i) {
int ch;
unsigned char s[4];
ch = termarg.c_cc[i];
if (isprint(ch)) {
s[0] = ch; s[1]= '\0';
} else if (ch < ' ') {
s[0] = '^'; s[1] = ch+'@'; s[2] = '\0';
} else {
s[0] = 'x';
s[1] = (ch>>4)>=10?(ch>>4)-10+'A':(ch>>4)+'0';
s[2] = (ch&0x0f)>=10?(ch&0x0f)-10+'A':(ch&0x0f)+'0';
s[3] = '\0';
}
fprintf(outfile, " cc[%d]=%s", i, s);
}
}
}
#endif /* _WITH_TERMIOS */
return 0;
}
#if _WITH_SOCKET
int sockan(int fd, FILE *outfile) {
#define FILAN_OPTLEN 256
#define FILAN_NAMELEN 256
socklen_t optlen;
int result /*0, i*/;
static const char *socktypes[] = {
"undef", "STREAM", "DGRAM", "RAW", "RDM",
"SEQPACKET", "undef", "undef", "undef", "undef",
"PACKET", "undef" } ;
char nambuff[FILAN_NAMELEN];
/* in Linux these optcodes are 'enum', but on AIX they are bits! */
static const struct sockopt sockopts[] = {
{SO_DEBUG, "DEBUG"},
{SO_REUSEADDR, "REUSEADDR"},
{SO_TYPE, "TYPE"},
{SO_ERROR, "ERROR"},
#ifdef SO_PROTOTYPE
{SO_PROTOTYPE, "PROTOTYPE"},
#endif
{SO_DONTROUTE, "DONTROUTE"},
{SO_BROADCAST, "BROADCAST"},
{SO_SNDBUF, "SNDBUF"},
{SO_RCVBUF, "RCVBUF"},
{SO_KEEPALIVE, "KEEPALIVE"},
{SO_OOBINLINE, "OOBINLINE"},
#ifdef SO_NO_CHECK
{SO_NO_CHECK, "NO_CHECK"},
#endif
#ifdef SO_PRIORITY
{SO_PRIORITY, "PRIORITY"},
#endif
{SO_LINGER, "LINGER"},
#ifdef SO_BSDCOMPAT
{SO_BSDCOMPAT, "BSDCOMPAT"},
#endif
#ifdef SO_REUSEPORT
{SO_REUSEPORT, "REUSEPORT"},
#endif /* defined(SO_REUSEPORT) */
#ifdef SO_PASSCRED
{SO_PASSCRED, "PASSCRED"},
#endif
#ifdef SO_PEERCRED
{SO_PEERCRED, "PEERCRED"},
#endif
#ifdef SO_RCVLOWAT
{SO_RCVLOWAT, "RCVLOWAT"},
#endif
#ifdef SO_SNDLOWAT
{SO_SNDLOWAT, "SNDLOWAT"},
#endif
#ifdef SO_RCVTIMEO
{SO_RCVTIMEO, "RCVTIMEO"},
#endif
#ifdef SO_SNDTIMEO
{SO_SNDTIMEO, "SNDTIMEO"},
#endif
#ifdef SO_SECURITY_AUTHENTICATION
{SO_SECURITY_AUTHENTICATION, "SECURITY_AUTHENTICATION"},
#endif
#ifdef SO_SECURITY_ENCRYPTION_TRANSPORT
{SO_SECURITY_ENCRYPTION_TRANSPORT, "SECURITY_ENCRYPTION_TRANSPORT"},
#endif
#ifdef SO_SECURITY_ENCRYPTION_NETWORK
{SO_SECURITY_ENCRYPTION_NETWORK, "SECURITY_ENCRYPTION_NETWORK"},
#endif
#ifdef SO_BINDTODEVICE
{SO_BINDTODEVICE, "BINDTODEVICE"},
#endif
#ifdef SO_ATTACH_FILTER
{SO_ATTACH_FILTER, "ATTACH_FILTER"},
#endif
#ifdef SO_DETACH_FILTER
{SO_DETACH_FILTER, "DETACH_FILTER"},
#endif
{0, NULL} } ;
union {
char c[FILAN_OPTLEN];
int i[FILAN_OPTLEN/sizeof(int)];
} optval;
const struct sockopt *optname;
union sockaddr_union sockname, peername; /* the longest I know of */
socklen_t namelen;
#if 0 && defined(SIOCGIFNAME)
/*Linux struct ifreq ifc = {{{ 0 }}};*/
struct ifreq ifc = {{ 0 }};
#endif
optlen = FILAN_OPTLEN;
result = Getsockopt(fd, SOL_SOCKET, SO_TYPE, optval.c, &optlen);
if (result < 0) {
Debug4("getsockopt(%d, SOL_SOCKET, SO_TYPE, %p, {"F_socklen"}): %s",
fd, optval.c, optlen, strerror(errno));
} else {
Debug3("fd %d: socket of type %d (\"%s\")", fd, *optval.i,
socktypes[*optval.i]);
}
optname = sockopts; while (optname->so) {
optlen = FILAN_OPTLEN;
result =
Getsockopt(fd, SOL_SOCKET, optname->so, (void *)optval.c, &optlen);
if (result < 0) {
Debug5("getsockopt(%d, SOL_SOCKET, %d, %p, {"F_socklen"}): %s",
fd, optname->so, optval.c, optlen, strerror(errno));
fputc('\t', outfile);
} else if (optlen == sizeof(int)) {
Debug2("getsockopt(,,, {%d}, %d)",
*optval.i, optlen);
/*Info2("%s: %d", optname->name, optval.i);*/
fprintf(outfile, "%s=%d\t", optname->name, *optval.i);
} else {
Debug3("getsockopt(,,, {%d,%d}, %d)",
optval.i[0], optval.i[1], optlen);
fprintf(outfile, "%s={%d,%d}\t", optname->name,
optval.i[0], optval.i[1]);
}
++optname;
}
namelen = sizeof(sockname);
result = Getsockname(fd, (struct sockaddr *)&sockname, &namelen);
if (result < 0) {
putc('\n', outfile);
Warn2("getsockname(%d): %s", fd, strerror(errno));
return -1;
}
fputc('\t', outfile);
fputs(sockaddr_info((struct sockaddr *)&sockname, namelen, nambuff, sizeof(nambuff)),
outfile);
namelen = sizeof(peername);
result = Getpeername(fd, (struct sockaddr *)&peername, &namelen);
if (result < 0) {
putc('\n', outfile);
Warn2("getpeername(%d): %s", fd, strerror(errno));
} else {
/* only valid if getpeername() succeeded */
fputs(" <-> ", outfile);
fprintf(outfile, "%s\t",
sockaddr_info((struct sockaddr *)&peername, namelen,
nambuff, sizeof(nambuff)));
}
#if 0 && defined(SIOCGIFNAME)
if ((result = Ioctl(fd, SIOCGIFNAME, &ifc)) < 0) {
Warn3("ioctl(%d, SIOCGIFNAME, %p): %s", fd, &ifc, strerror(errno));
} else {
fprintf(outfile, "IFNAME=\"%s\"\t", ifc.ifr_name);
}
#endif /* SIOCGIFNAME */
switch (((struct sockaddr *)&sockname)->sa_family) {
#if WITH_UNIX
case AF_UNIX:
/* no options for unix domain sockets known yet -> no unixan() */
result = 0;
break;
#endif
#if WITH_IP4
case AF_INET:
result = ipan(fd, outfile);
break;
#endif
#if WITH_IP6
case AF_INET6:
result = ipan(fd, outfile);
result |= ip6an(fd, outfile);
break;
#endif
default:
fputs("**** NO FURTHER ANALYSIS FOR THIS SOCKET TYPE IMPLEMENTED", outfile);
result = 0;
}
return result;
#undef FILAN_OPTLEN
#undef FILAN_NAMELEN
}
#endif /* _WITH_SOCKET */
#if WITH_IP4 || WITH_IP6
/* prints the option values for the IP protocol and the IP based protocols */
/* no distinction between IP4 and IP6 yet */
int ipan(int fd, FILE *outfile) {
/* in Linux these optcodes are 'enum', but on AIX they are bits! */
static const struct sockopt ipopts[] = {
{IP_TOS, "IP_TOS"},
{IP_TTL, "IP_TTL"},
#ifdef IP_HDRINCL
{IP_HDRINCL, "IP_HDRINCL"},
#endif
#ifdef IP_OPTIONS
{IP_OPTIONS, "IP_OPTIONS"},
#endif
#ifdef IP_ROUTER_ALERT
{IP_ROUTER_ALERT, "IP_ROUTER_ALERT"},
#endif
#ifdef IP_RECVOPTS
{IP_RECVOPTS, "IP_RECVOPTS"},
#endif
#ifdef IP_RETOPTS
{IP_RETOPTS, "IP_RETOPTS"},
#endif
#ifdef IP_PKTINFO
{IP_PKTINFO, "IP_PKTINFO"},
#endif
#ifdef IP_PKTOPTIONS
{IP_PKTOPTIONS, "IP_PKTOPTIONS"},
#endif
#ifdef IP_MTU_DISCOVER
{IP_MTU_DISCOVER, "IP_MTU_DISCOVER"},
#endif
#ifdef IP_RECVERR
{IP_RECVERR, "IP_RECVERR"},
#endif
#ifdef IP_RECVTTL
{IP_RECVTTL, "IP_RECVTTL"},
#endif
#ifdef IP_RECVTOS
{IP_RECVTOS, "IP_RECVTOS"},
#endif
#ifdef IP_MTU
{IP_MTU, "IP_MTU"},
#endif
#ifdef IP_FREEBIND
{IP_FREEBIND, "IP_FREEBIND"},
#endif
#ifdef IP_MULTICAST_TTL
{IP_MULTICAST_TTL, "IP_MULTICAST_TTL"},
#endif
#ifdef IP_MULTICAST_LOOP
{IP_MULTICAST_LOOP, "IP_MULTICAST_LOOP"},
#endif
{0, NULL} } ;
const struct sockopt *optname;
int opttype;
socklen_t optlen = sizeof(opttype);
optname = ipopts; while (optname->so) {
sockoptan(fd, optname, SOL_IP, outfile);
++optname;
}
/* want to pass the fd to the next layer protocol. dont know how to get the
protocol number from the fd? use TYPE to identify TCP. */
if (Getsockopt(fd, SOL_SOCKET, SO_TYPE, &opttype, &optlen) >= 0) {
switch (opttype) {
#if WITH_TCP
case SOCK_STREAM: tcpan(fd, outfile); break;
#endif
}
}
return 0;
}
#endif /* WITH_IP */
#if WITH_IP6
/* prints the option values for the IPv6 protocol */
int ip6an(int fd, FILE *outfile) {
static const struct sockopt ip6opts[] = {
#ifdef IPV6_V6ONLY
{IPV6_V6ONLY, "IPV6_V6ONLY"},
#endif
{0, NULL} } ;
const struct sockopt *optname;
optname = ip6opts; while (optname->so) {
sockoptan(fd, optname, SOL_IPV6, outfile);
++optname;
}
return 0;
}
#endif /* WITH_IP6 */
#if WITH_TCP
int tcpan(int fd, FILE *outfile) {
static const struct sockopt tcpopts[] = {
#ifdef TCP_NODELAY
{ TCP_NODELAY, "TCP_NODELAY" },
#endif
#ifdef TCP_MAXSEG
{ TCP_MAXSEG, "TCP_MAXSEG" },
#endif
#ifdef TCP_STDURG
{ TCP_STDURG, "TCP_STDURG" },
#endif
#ifdef TCP_RFC1323
{ TCP_RFC1323, "TCP_RFC1323" },
#endif
#ifdef TCP_CORK
{ TCP_CORK, "TCP_CORK" },
#endif
#ifdef TCP_KEEPIDLE
{ TCP_KEEPIDLE, "TCP_KEEPIDLE" },
#endif
#ifdef TCP_KEEPINTVL
{ TCP_KEEPINTVL, "TCP_KEEPINTVL" },
#endif
#ifdef TCP_KEEPCNT
{ TCP_KEEPCNT, "TCP_KEEPCNT" },
#endif
#ifdef TCP_SYNCNT
{ TCP_SYNCNT, "TCP_SYNCNT" },
#endif
#ifdef TCP_LINGER2
{ TCP_LINGER2, "TCP_LINGER2" },
#endif
#ifdef TCP_DEFER_ACCEPT
{ TCP_DEFER_ACCEPT, "TCP_ACCEPT" },
#endif
#ifdef TCP_WINDOW_CLAMP
{ TCP_WINDOW_CLAMP, "TCP_WINDOW_CLAMP" },
#endif
#ifdef TCP_INFO
{ TCP_INFO, "TCP_INFO" },
#endif
#ifdef TCP_QUICKACK
{ TCP_QUICKACK, "TCP_QUICKACK" },
#endif
#ifdef TCP_MD5SIG
{ TCP_MD5SIG, "TCP_MD5SIG" },
#endif
#ifdef TCP_NOOPT
{ TCP_NOOPT, "TCP_NOOPT" },
#endif
#ifdef TCP_NOPUSH
{ TCP_NOPUSH, "TCP_NOPUSH" },
#endif
#ifdef TCP_SACK_DISABLE
{ TCP_SACK_DISABLE, "TCP_SACK_DISABLE" },
#endif
#ifdef TCP_SIGNATURE_ENABLE
{ TCP_SIGNATURE_ENABLE, "TCP_SIGNATURE_ENABLE" },
#endif
#ifdef TCP_ABORT_THRESHOLD
{ TCP_ABORT_THRESHOLD, "TCP_ABORT_THRESHOLD" },
#endif
#ifdef TCP_CONN_ABORT_THRESHOLD
{ TCP_CONN_ABORT_THRESHOLD, "TCP_CONN_ABORT_THRESHOLD" },
#endif
#ifdef TCP_KEEPINIT
{ TCP_KEEPINIT, "TCP_KEEPINIT" },
#endif
#ifdef TCP_PAWS
{ TCP_PAWS, "TCP_PAWS" },
#endif
#ifdef TCP_SACKENA
{ TCP_SACKENA, "TCP_SACKENA" },
#endif
#ifdef TCP_TSOPTENA
{ TCP_TSOPTENA, "TCP_TSOPTENA" },
#endif
{0, NULL}
} ;
const struct sockopt *optname;
optname = tcpopts; while (optname->so) {
sockoptan(fd, optname, SOL_TCP, outfile);
++optname;
}
return 0;
}
#endif /* WITH_TCP */
#if _WITH_SOCKET
int sockoptan(int fd, const struct sockopt *optname, int socklay, FILE *outfile) {
#define FILAN_OPTLEN 256
union {
char c[FILAN_OPTLEN];
int i[FILAN_OPTLEN/sizeof(int)];
} optval;
socklen_t optlen;
int result;
optlen = FILAN_OPTLEN;
result =
Getsockopt(fd, socklay, optname->so, (void *)optval.c, &optlen);
if (result < 0) {
Debug6("getsockopt(%d, %d, %d, %p, {"F_socklen"}): %s",
fd, socklay, optname->so, optval.c, optlen, strerror(errno));
fputc('\t', outfile);
return -1;
} else if (optlen == 0) {
Debug1("getsockopt(,,, {}, %d)", optlen);
fprintf(outfile, "%s=\"\"\t", optname->name);
} else if (optlen == sizeof(int)) {
Debug2("getsockopt(,,, {%d}, %d)",
*optval.i, optlen);
fprintf(outfile, "%s=%d\t", optname->name, *optval.i);
} else {
char outbuf[FILAN_OPTLEN*9+128], *cp = outbuf;
int i;
for (i = 0; i < optlen/sizeof(unsigned int); ++i) {
cp += sprintf(cp, "%08x ", (unsigned int)optval.i[i]);
}
*--cp = '\0'; /* delete trailing space */
Debug2("getsockopt(,,, {%s}, %d)", outbuf, optlen);
fflush(outfile);
fprintf(outfile, "%s={%s}\t", optname->name, outbuf);
}
return 0;
#undef FILAN_OPTLEN
}
#endif /* _WITH_SOCKET */
#if _WITH_SOCKET
int isasocket(int fd) {
int retval;
#if HAVE_STAT64
struct stat64 props;
#else
struct stat props;
#endif /* HAVE_STAT64 */
retval =
#if HAVE_STAT64
Fstat64(fd, &props);
#else
Fstat(fd, &props);
#endif
if (retval < 0) {
Info3("fstat(%d, %p): %s", fd, &props, strerror(errno));
return 0;
}
/* note: when S_ISSOCK was undefined, it always gives 0 */
return S_ISSOCK(props.st_mode);
}
#endif /* _WITH_SOCKET */
const char *getfiletypestring(int st_mode) {
const char *s;
switch (st_mode&S_IFMT) {
case S_IFIFO: s = "pipe"; break;
case S_IFCHR: s = "chrdev"; break;
case S_IFDIR: s = "dir"; break;
case S_IFBLK: s = "blkdev"; break;
case S_IFREG: s = "file"; break;
case S_IFLNK: s = "symlink"; break;
case S_IFSOCK: s = "socket"; break;
/*! AIX: MT? */
default: s = "undef"; break;
}
return s;
}
static int printtime(FILE *outfile, time_t time) {
const char *s;
if (filan_rawoutput) {
fprintf(outfile, "\t"F_time, time);
} else {
fputc('\t', outfile);
s = asctime(localtime(&time));
if (strchr(s, '\n')) *strchr(s, '\n') = '\0';
fputs(s, outfile);
}
return 0;
}
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