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socat/hostan.c
Gerhard Rieger 27877ea777 Procan: Try to identify controlling terminal
2023-11-11 17:45:02 +01:00

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/* source: hostan.c */
/* Copyright Gerhard Rieger and contributors (see file CHANGES) */
/* Published under the GNU General Public License V.2, see file COPYING */
/* the subroutine hostan makes a "HOST ANalysis". It gathers information
about the host environment it is running in without modifying its state
(almost).
*/
#include "xiosysincludes.h"
#include "mytypes.h"
#include "compat.h"
#include "error.h"
#include "sycls.h"
#include "sysutils.h"
#include "filan.h"
#include "hostan.h"
static int iffan(FILE *outfile);
static int vsockan(FILE *outfile);
int hostan(FILE *outfile) {
fprintf(outfile, "\nC TYPE SIZES\n");
fprintf(outfile, "sizeof(char) = %u\n", (unsigned int)sizeof(char));
fprintf(outfile, "sizeof(short) = %u\n", (unsigned int)sizeof(short));
fprintf(outfile, "sizeof(int) = %u\n", (unsigned int)sizeof(int));
fprintf(outfile, "sizeof(long) = %u\n", (unsigned int)sizeof(long));
#if HAVE_TYPE_LONGLONG
fprintf(outfile, "sizeof(long long) = %u\n", (unsigned int)sizeof(long long));
#endif
fprintf(outfile, "sizeof(size_t) = %u\n", (unsigned int)sizeof(size_t));
# if HAVE_BASIC_SIZE_T==2
fprintf(outfile, "typedef unsigned short size_t; /* sizeof(size_t) = %u */\n", (unsigned int)sizeof(size_t));
#elif HAVE_BASIC_SIZE_T==4
fprintf(outfile, "typedef unsigned int size_t; /* sizeof(size_t) = %u */\n", (unsigned int)sizeof(size_t));
#elif HAVE_BASIC_SIZE_T==6
fprintf(outfile, "typedef unsigned long size_t; /* sizeof(size_t) = %u */\n", (unsigned int)sizeof(size_t));
#elif HAVE_BASIC_SIZE_T==8
fprintf(outfile, "typedef unsigned long long size_t; /* sizeof(size_t) = %u */\n", (unsigned int)sizeof(size_t));
#endif
# if HAVE_BASIC_MODE_T==1
fprintf(outfile, "typedef short mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==2
fprintf(outfile, "typedef unsigned short mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==3
fprintf(outfile, "typedef int mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==4
fprintf(outfile, "typedef unsigned int mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==5
fprintf(outfile, "typedef long mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==6
fprintf(outfile, "typedef unsigned long mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==7
fprintf(outfile, "typedef long long mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#elif HAVE_BASIC_MODE_T==8
fprintf(outfile, "typedef unsigned long long mode_t; /* sizeof(mode_t) = %u */\n", (unsigned int)sizeof(mode_t));
#endif
# if HAVE_BASIC_PID_T==1
fprintf(outfile, "typedef short pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==2
fprintf(outfile, "typedef unsigned short pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==3
fprintf(outfile, "typedef int pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==4
fprintf(outfile, "typedef unsigned int pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==5
fprintf(outfile, "typedef long pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==6
fprintf(outfile, "typedef unsigned long pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==7
fprintf(outfile, "typedef long long pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#elif HAVE_BASIC_PID_T==8
fprintf(outfile, "typedef unsigned long long pid_t; /* sizeof(pid_t) = %u */\n", (unsigned int)sizeof(pid_t));
#endif
# if HAVE_BASIC_UID_T==1
fprintf(outfile, "typedef short uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==2
fprintf(outfile, "typedef unsigned short uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==3
fprintf(outfile, "typedef int uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==4
fprintf(outfile, "typedef unsigned int uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==5
fprintf(outfile, "typedef long uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==6
fprintf(outfile, "typedef unsigned long uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==7
fprintf(outfile, "typedef long long uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#elif HAVE_BASIC_UID_T==8
fprintf(outfile, "typedef unsigned long long uid_t; /* sizeof(uid_t) = %u */\n", (unsigned int)sizeof(uid_t));
#endif
# if HAVE_BASIC_GID_T==1
fprintf(outfile, "typedef short gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==2
fprintf(outfile, "typedef unsigned short gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==3
fprintf(outfile, "typedef int gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==4
fprintf(outfile, "typedef unsigned int gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==5
fprintf(outfile, "typedef long gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==6
fprintf(outfile, "typedef unsigned long gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==7
fprintf(outfile, "typedef long long gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#elif HAVE_BASIC_GID_T==8
fprintf(outfile, "typedef unsigned long long gid_t; /* sizeof(gid_t) = %u */\n", (unsigned int)sizeof(gid_t));
#endif
# if HAVE_BASIC_TIME_T==1
fprintf(outfile, "typedef short time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==2
fprintf(outfile, "typedef unsigned short time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==3
fprintf(outfile, "typedef int time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==4
fprintf(outfile, "typedef unsigned int time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==5
fprintf(outfile, "typedef long time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==6
fprintf(outfile, "typedef unsigned long time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==7
fprintf(outfile, "typedef long long time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#elif HAVE_BASIC_TIME_T==8
fprintf(outfile, "typedef unsigned long long time_t; /* sizeof(time_t) = %u */\n", (unsigned int)sizeof(time_t));
#endif
# if HAVE_BASIC_SOCKLEN_T==1
fprintf(outfile, "typedef short socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==2
fprintf(outfile, "typedef unsigned short socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==3
fprintf(outfile, "typedef int socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==4
fprintf(outfile, "typedef unsigned int socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==5
fprintf(outfile, "typedef long socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==6
fprintf(outfile, "typedef unsigned long socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==7
fprintf(outfile, "typedef long long socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#elif HAVE_BASIC_SOCKLEN_T==8
fprintf(outfile, "typedef unsigned long long socklen_t; /* sizeof(socklen_t) = %u */\n", (unsigned int)sizeof(socklen_t));
#endif
# if HAVE_BASIC_OFF_T==1
fprintf(outfile, "typedef short off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==2
fprintf(outfile, "typedef unsigned short off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==3
fprintf(outfile, "typedef int off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==4
fprintf(outfile, "typedef unsigned int off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==5
fprintf(outfile, "typedef long off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==6
fprintf(outfile, "typedef unsigned long off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==7
fprintf(outfile, "typedef long long off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#elif HAVE_BASIC_OFF_T==8
fprintf(outfile, "typedef unsigned long long off_t; /* sizeof(off_t) = %u */\n", (unsigned int)sizeof(off_t));
#endif
#if HAVE_TYPE_OFF64 && defined(HAVE_BASIC_OFF64_T) && HAVE_BASIC_OFF64_T
# if HAVE_BASIC_OFF64_T==1
fprintf(outfile, "typedef short off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==2
fprintf(outfile, "typedef unsigned short off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==3
fprintf(outfile, "typedef int off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==4
fprintf(outfile, "typedef unsigned int off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==5
fprintf(outfile, "typedef long off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==6
fprintf(outfile, "typedef unsigned long off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==7
fprintf(outfile, "typedef long long off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#elif HAVE_BASIC_OFF64_T==8
fprintf(outfile, "typedef unsigned long long off64_t; /* sizeof(off64_t) = %u */\n", (unsigned int)sizeof(off64_t));
#endif
#endif /* defined(HAVE_BASIC_OFF64_T) && HAVE_BASIC_OFF64_T */
# if HAVE_BASIC_DEV_T==1
fprintf(outfile, "typedef short dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==2
fprintf(outfile, "typedef unsigned short dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==3
fprintf(outfile, "typedef int dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==4
fprintf(outfile, "typedef unsigned int dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==5
fprintf(outfile, "typedef long dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==6
fprintf(outfile, "typedef unsigned long dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==7
fprintf(outfile, "typedef long long dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#elif HAVE_BASIC_DEV_T==8
fprintf(outfile, "typedef unsigned long long dev_t; /* sizeof(dev_t) = %u */\n", (unsigned int)sizeof(dev_t));
#endif
{
struct stat x;
# if HAVE_TYPEOF_ST_INO==1
fprintf(outfile, "typedef short ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==2
fprintf(outfile, "typedef unsigned short ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==3
fprintf(outfile, "typedef int ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==4
fprintf(outfile, "typedef unsigned int ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==5
fprintf(outfile, "typedef long ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==6
fprintf(outfile, "typedef unsigned long ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==7
fprintf(outfile, "typedef long long ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#elif HAVE_TYPEOF_ST_INO==8
fprintf(outfile, "typedef unsigned long long ino_t; /* sizeof(ino_t) = %u */\n", (unsigned int)sizeof(x.st_ino));
#endif
}
{
unsigned short x = 0x100;
if (x == ntohs(0x100)) {
fprintf(outfile, "#define __BYTE_ORDER __BIG_ENDIAN\t/* Motorola ea.*/\n");
} else {
fprintf(outfile, "#define __BYTE_ORDER __LITTLE_ENDIAN\t/* Intel ea.*/\n");
}
}
#include <sys/time.h> /* select(); OpenBSD: struct timespec */
fprintf(outfile, "sizeof(struct timespec) = %u\n", (unsigned int)sizeof(struct timespec));
fprintf(outfile, "\n");
fprintf(outfile, "/* Socat types */\n");
fprintf(outfile, "sizeof(struct diag_dgram) = %u\n", (unsigned int)sizeof(struct diag_dgram));
fprintf(outfile, "((struct diag_dgram *)0)->op-((struct diag_dgram *)0) = %u\n", (unsigned int)((char *)(&((struct diag_dgram *)0)->op)-(char *)((struct diag_dgram *)0)));
fprintf(outfile, "((struct diag_dgram *)0)->now-((struct diag_dgram *)0) = %u\n", (unsigned int)((char *)(&((struct diag_dgram *)0)->now)-(char *)((struct diag_dgram *)0)));
fprintf(outfile, "((struct diag_dgram *)0)->exitcode-((struct diag_dgram *)0) = %u\n", (unsigned int)((char *)(&((struct diag_dgram *)0)->exitcode)-(char *)((struct diag_dgram *)0)));
fprintf(outfile, "((struct diag_dgram *)0)->text-((struct diag_dgram *)0) = %u\n", (unsigned int)((((struct diag_dgram *)0)->text)-(char *)((struct diag_dgram *)0)));
#if _WITH_SOCKET && (_WITH_IP4 || _WITH_IP6)
fprintf(outfile, "\nIP INTERFACES\n");
iffan(outfile);
#endif
#if WITH_VSOCK
vsockan(outfile);
#endif
return 0;
}
#if _WITH_SOCKET && (_WITH_IP4 || _WITH_IP6)
static int iffan(FILE *outfile) {
/* Linux: man 7 netdevice */
/* FreeBSD, NetBSD: man 4 networking */
/* Solaris: man 7 if_tcp */
/* currently we support Linux and a little FreeBSD */
#ifdef SIOCGIFCONF /* not Solaris */
#define IFBUFSIZ 32*sizeof(struct ifreq) /*1024*/
int s;
unsigned char buff[IFBUFSIZ];
struct ifconf ic;
int i;
if ((s = Socket(PF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0) {
Warn1("socket(PF_INET, SOCK_DGRAM, IPPROTO_IP): %s", strerror(errno));
return -1;
}
for (i=0; i < IFBUFSIZ; ++i) {
buff[i] = 255;
}
ic.ifc_len = sizeof(buff);
ic.ifc_ifcu.ifcu_buf = (caddr_t)buff;
if (Ioctl(s, SIOCGIFCONF, &ic) < 0) {
Warn3("ioctl(%d, SIOCGIFCONF, %p): %s", s, &ic, strerror(errno));
return -1;
}
for (i = 0; i < ic.ifc_len; i += sizeof(struct ifreq)) {
struct ifreq *ifp = (struct ifreq *)((caddr_t)ic.ifc_req + i);
#if 0 || defined(SIOCGIFINDEX) /* not NetBSD, OpenBSD */
struct ifreq ifr;
#endif
#if 0 || defined(SIOCGIFINDEX) /* not NetBSD, OpenBSD */
strcpy(ifr.ifr_name, ifp->ifr_name);
if (Ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
Warn3("ioctl(%d, SIOCGIFINDEX, {\"%s\"}): %s",
s, ifr.ifr_name, strerror(errno));
return 1;
}
#if HAVE_STRUCT_IFREQ_IFR_INDEX
fprintf(outfile, "%2d: %s\n", ifr.ifr_index, ifp->ifr_name);
#elif HAVE_STRUCT_IFREQ_IFR_IFINDEX
fprintf(outfile, "%2d: %s\n", ifr.ifr_ifindex, ifp->ifr_name);
#endif /* HAVE_STRUCT_IFREQ_IFR_INDEX */
#else /* !defined(SIOCGIFINDEX) */
fprintf(outfile, "%2d: %s\n", i/(int)sizeof(struct ifreq), ifp->ifr_name);
#endif /* defined(SIOCGIFINDEX) */
}
Close(s);
#endif /* defined(SIOCGIFCONF) */
return 0;
}
#endif /* _WITH_SOCKET */
#if WITH_VSOCK
static int vsockan(FILE *outfile) {
unsigned int cid;
int vsock;
if (Getuid() != 0) {
return 1;
}
if ((vsock = Open("/dev/vsock", O_RDONLY, 0)) < 0 ) {
Warn1("open(\"/dev/vsock\", ...): %s", strerror(errno));
return -1;
} else if (Ioctl(vsock, IOCTL_VM_SOCKETS_GET_LOCAL_CID, &cid) < 0) {
Warn2("ioctl(%d, IOCTL_VM_SOCKETS_GET_LOCAL_CID, ...): %s",
vsock, strerror(errno));
return -1;
} else {
Notice1("VSOCK CID=%u", cid);
fprintf(outfile, "\nVSOCK_CID = %u\n", cid);
}
if (vsock >= 0) {
Close(vsock);
}
return 0;
}
#endif /* WITH_VSOCK */
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