NetBSD/bin/systrace/systrace-translate.c

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2003-03-26 02:15:22 +03:00
/* $NetBSD: systrace-translate.c,v 1.11 2003/03/25 23:15:22 provos Exp $ */
/* $OpenBSD: systrace-translate.c,v 1.10 2002/08/01 20:50:17 provos Exp $ */
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/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/tree.h>
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#include <sys/socket.h>
#include <sys/signal.h>
#include <inttypes.h>
#include <limits.h>
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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <pwd.h>
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#include <err.h>
#ifdef __OpenBSD__
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#include "../../sys/compat/linux/linux_types.h"
#include "../../sys/compat/linux/linux_fcntl.h"
#endif
#include "intercept.h"
#include "systrace.h"
#if defined(__NetBSD__) && defined(HAVE_LINUX_FCNTL_H)
#include "../../sys/compat/linux/common/linux_types.h"
#include "../../sys/compat/linux/common/linux_fcntl.h"
#endif
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#define FL(w,c) do { \
if (flags & (w)) \
*p++ = (c); \
} while (0)
static int print_oflags(char *, size_t, struct intercept_translate *);
#ifdef HAVE_LINUX_FCNTL_H
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static int linux_print_oflags(char *, size_t, struct intercept_translate *);
#endif
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static int print_modeflags(char *, size_t, struct intercept_translate *);
static int print_number(char *, size_t, struct intercept_translate *);
static int print_uname(char *, size_t, struct intercept_translate *);
static int print_pidname(char *, size_t, struct intercept_translate *);
static int print_signame(char *, size_t, struct intercept_translate *);
static int get_argv(struct intercept_translate *, int, pid_t, void *);
static int print_argv(char *, size_t, struct intercept_translate *);
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static int
print_oflags(char *buf, size_t buflen, struct intercept_translate *tl)
{
char str[32], *p;
int flags = (intptr_t)tl->trans_addr;
int isread = 0;
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p = str;
switch (flags & O_ACCMODE) {
case O_RDONLY:
strcpy(p, "ro");
isread = 1;
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break;
case O_WRONLY:
strcpy(p, "wo");
break;
case O_RDWR:
strcpy(p, "rw");
break;
default:
strcpy(p, "--");
break;
}
/* XXX - Open handling of alias */
#ifdef __NetBSD__
if (isread)
systrace_switch_alias("netbsd", "open", "netbsd", "fsread");
else
systrace_switch_alias("netbsd", "open", "netbsd", "fswrite");
#else
if (isread)
systrace_switch_alias("native", "open", "native", "fsread");
else
systrace_switch_alias("native", "open", "native", "fswrite");
#endif
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p += 2;
FL(O_NONBLOCK, 'n');
FL(O_APPEND, 'a');
FL(O_CREAT, 'c');
FL(O_TRUNC, 't');
*p = '\0';
strlcpy(buf, str, buflen);
return (0);
}
#ifdef HAVE_LINUX_FCNTL_H
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static int
linux_print_oflags(char *buf, size_t buflen, struct intercept_translate *tl)
{
char str[32], *p;
int flags = (intptr_t)tl->trans_addr;
int isread = 0;
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p = str;
switch (flags & LINUX_O_ACCMODE) {
case LINUX_O_RDONLY:
strcpy(p, "ro");
isread = 1;
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break;
case LINUX_O_WRONLY:
strcpy(p, "wo");
break;
case LINUX_O_RDWR:
strcpy(p, "rw");
break;
default:
strcpy(p, "--");
break;
}
/* XXX - Open handling of alias */
if (isread)
systrace_switch_alias("linux", "open", "linux", "fsread");
else
systrace_switch_alias("linux", "open", "linux", "fswrite");
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p += 2;
FL(LINUX_O_APPEND, 'a');
FL(LINUX_O_CREAT, 'c');
FL(LINUX_O_TRUNC, 't');
*p = '\0';
strlcpy(buf, str, buflen);
return (0);
}
#endif
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static int
print_modeflags(char *buf, size_t buflen, struct intercept_translate *tl)
{
int mode = (intptr_t)tl->trans_addr;
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mode &= 00007777;
snprintf(buf, buflen, "%o", mode);
return (0);
}
static int
print_number(char *buf, size_t buflen, struct intercept_translate *tl)
{
int number = (intptr_t)tl->trans_addr;
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snprintf(buf, buflen, "%d", number);
return (0);
}
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static int
print_sockdom(char *buf, size_t buflen, struct intercept_translate *tl)
{
int domain = (intptr_t)tl->trans_addr;
char *what = NULL;
switch (domain) {
case AF_UNIX:
what = "AF_UNIX";
break;
case AF_INET:
what = "AF_INET";
break;
case AF_INET6:
what = "AF_INET6";
break;
case AF_ISO:
what = "AF_ISO";
break;
case AF_NS:
what = "AF_NS";
break;
case AF_IPX:
what = "AF_IPX";
break;
case AF_IMPLINK:
what = "AF_IMPLINK";
break;
default:
snprintf(buf, buflen, "AF_UNKNOWN(%d)", domain);
break;
}
if (what != NULL)
strlcpy(buf, what, buflen);
return (0);
}
static int
print_socktype(char *buf, size_t buflen, struct intercept_translate *tl)
{
int type = (intptr_t)tl->trans_addr;
char *what = NULL;
switch (type) {
case SOCK_STREAM:
what = "SOCK_STREAM";
break;
case SOCK_DGRAM:
what = "SOCK_DGRAM";
break;
case SOCK_RAW:
what = "SOCK_RAW";
break;
case SOCK_SEQPACKET:
what = "SOCK_SEQPACKET";
break;
case SOCK_RDM:
what = "SOCK_RDM";
break;
default:
snprintf(buf, buflen, "SOCK_UNKNOWN(%d)", type);
break;
}
if (what != NULL)
strlcpy(buf, what, buflen);
return (0);
}
static int
print_uname(char *buf, size_t buflen, struct intercept_translate *tl)
{
struct passwd *pw;
uid_t uid = (intptr_t)tl->trans_addr;
pw = getpwuid(uid);
snprintf(buf, buflen, "%s", pw != NULL ? pw->pw_name : "<unknown>");
return (0);
}
static int
print_pidname(char *buf, size_t buflen, struct intercept_translate *tl)
{
struct intercept_pid *icpid;
pid_t pid = (intptr_t)tl->trans_addr;
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if (pid != 0) {
icpid = intercept_getpid(pid);
snprintf(buf, buflen, "%s",
icpid->name != NULL ? icpid->name : "<unknown>");
if (icpid->name == NULL)
intercept_freepid(pid);
} else
strlcpy(buf, "<own process group>", buflen);
return (0);
}
static int
print_signame(char *buf, size_t buflen, struct intercept_translate *tl)
{
int sig = (intptr_t)tl->trans_addr;
char *name;
switch (sig) {
case SIGHUP:
name = "SIGHUP";
break;
case SIGINT:
name = "SIGINT";
break;
case SIGQUIT:
name = "SIGQUIT";
break;
case SIGILL:
name = "SIGILL";
break;
case SIGABRT:
name = "SIGABRT";
break;
case SIGFPE:
name = "SIGFPE";
break;
case SIGKILL:
name = "SIGKILL";
break;
case SIGBUS:
name = "SIGBUS";
break;
case SIGSEGV:
name = "SIGSEGV";
break;
case SIGSYS:
name = "SIGSYS";
break;
case SIGPIPE:
name = "SIGPIPE";
break;
case SIGALRM:
name = "SIGALRM";
break;
case SIGTERM:
name = "SIGTERM";
break;
case SIGURG:
name = "SIGURG";
break;
case SIGSTOP:
name = "SIGSTOP";
break;
case SIGTSTP:
name = "SIGTSTP";
break;
case SIGCONT:
name = "SIGCONT";
break;
case SIGCHLD:
name = "SIGCHLD";
break;
case SIGTTIN:
name = "SIGTTIN";
break;
case SIGTTOU:
name = "SIGTTOU";
break;
case SIGIO:
name = "SIGIO";
break;
case SIGPROF:
name = "SIGPROF";
break;
case SIGWINCH:
name = "SIGWINCH";
break;
case SIGINFO:
name = "SIGINFO";
break;
case SIGUSR1:
name = "SIGUSR1";
break;
case SIGUSR2:
name = "SIGUSR2";
break;
default:
snprintf(buf, buflen, "<unknown>: %d", sig);
return (0);
}
snprintf(buf, buflen, "%s", name);
return (0);
}
static int
get_argv(struct intercept_translate *trans, int fd, pid_t pid, void *addr)
{
char *arg;
char buf[_POSIX2_LINE_MAX], *p;
int i, off = 0, len;
extern struct intercept_system intercept;
i = 0;
buf[0] = '\0';
while (1) {
if (intercept.io(fd, pid, INTERCEPT_READ, (char *)addr + off,
(void *)&arg, sizeof(char *)) == -1) {
warn("%s: ioctl", __func__);
return (-1);
}
if (arg == NULL)
break;
p = intercept_get_string(fd, pid, arg);
if (p == NULL)
return (-1);
if (i > 0)
strlcat(buf, " ", sizeof(buf));
strlcat(buf, p, sizeof(buf));
off += sizeof(char *);
i++;
}
len = strlen(buf) + 1;
trans->trans_data = malloc(len);
if (trans->trans_data == NULL)
return (-1);
/* XXX - No argument replacement */
trans->trans_size = 0;
memcpy(trans->trans_data, buf, len);
return (0);
}
static int
print_argv(char *buf, size_t buflen, struct intercept_translate *tl)
{
snprintf(buf, buflen, "%s", (char *)tl->trans_data);
return (0);
}
struct intercept_translate ic_trargv = {
"argv",
get_argv, print_argv,
};
struct intercept_translate ic_oflags = {
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"oflags",
NULL, print_oflags,
};
#ifdef HAVE_LINUX_FCNTL_H
struct intercept_translate ic_linux_oflags = {
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"oflags",
NULL, linux_print_oflags,
};
#endif
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struct intercept_translate ic_modeflags = {
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"mode",
NULL, print_modeflags,
};
struct intercept_translate ic_uidt = {
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"uid",
NULL, print_number,
};
struct intercept_translate ic_uname = {
"uname",
NULL, print_uname,
};
struct intercept_translate ic_gidt = {
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"gid",
NULL, print_number,
};
struct intercept_translate ic_fdt = {
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"fd",
NULL, print_number,
};
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struct intercept_translate ic_sockdom = {
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"sockdom",
NULL, print_sockdom,
};
struct intercept_translate ic_socktype = {
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"socktype",
NULL, print_socktype,
};
struct intercept_translate ic_pidname = {
"pidname",
NULL, print_pidname,
};
struct intercept_translate ic_signame = {
"signame",
NULL, print_signame,
};