source: scripts/patches/tcp_wrappers-7.6-shared_lib_plus_plus-1.patch@ aec544d

tcp_wrappers_7.6

@@ +1 @@
+GLIBC=$(shell grep -s -c __GLIBC__ /usr/include/features.h)
+
 # @(#) Makefile 1.23 97/03/21 19:27:20
 
+# unset the HOSTNAME environment variable
+HOSTNAME =
+
 what:
         @echo
         @echo "Usage: edit the REAL_DAEMON_DIR definition in the Makefile then:"
@@ -19 +24 @@
         @echo " generic (most bsd-ish systems with sys5 compatibility)"
         @echo " 386bsd aix alpha apollo bsdos convex-ultranet dell-gcc dgux dgux543"
         @echo " dynix epix esix freebsd hpux irix4 irix5 irix6 isc iunix"
-        @echo " linux machten mips(untested) ncrsvr4 netbsd next osf power_unix_211"
+        @echo " linux gnu machten mips(untested) ncrsvr4 netbsd next osf power_unix_211"
         @echo " ptx-2.x ptx-generic pyramid sco sco-nis sco-od2 sco-os5 sinix sunos4"
         @echo " sunos40 sunos5 sysv4 tandem ultrix unicos7 unicos8 unixware1 unixware2"
         @echo " uts215 uxp"
@@ -43 +48 @@
 # Ultrix 4.x SunOS 4.x ConvexOS 10.x Dynix/ptx
 #REAL_DAEMON_DIR=/usr/etc
 #
-# SysV.4 Solaris 2.x OSF AIX
-#REAL_DAEMON_DIR=/usr/sbin
+# SysV.4 Solaris 2.x OSF AIX Linux
+REAL_DAEMON_DIR=/usr/sbin
 #
 # BSD 4.4
 #REAL_DAEMON_DIR=/usr/libexec
@@ -141 +146 @@
         LIBS= RANLIB=ranlib ARFLAGS=rv AUX_OBJ= NETGROUP= TLI= \
         EXTRA_CFLAGS=-DSYS_ERRLIST_DEFINED VSYSLOG= all
 
+ifneq ($(GLIBC),0)
+MYLIB=-lnsl
+endif
+
 linux:
         @make REAL_DAEMON_DIR=$(REAL_DAEMON_DIR) STYLE=$(STYLE) \
-        LIBS= RANLIB=ranlib ARFLAGS=rv AUX_OBJ=setenv.o \
-        NETGROUP= TLI= EXTRA_CFLAGS="-DBROKEN_SO_LINGER" all
+        LIBS=$(MYLIB) RANLIB=ranlib ARFLAGS=rv AUX_OBJ=weak_symbols.o \
+        NETGROUP=-DNETGROUP TLI= VSYSLOG= BUGS= all \
+        EXTRA_CFLAGS="-DSYS_ERRLIST_DEFINED -DHAVE_WEAKSYMS -D_REENTRANT"
+
+gnu:
+        @make REAL_DAEMON_DIR=$(REAL_DAEMON_DIR) STYLE=$(STYLE) \
+        LIBS=$(MYLIB) RANLIB=ranlib ARFLAGS=rv AUX_OBJ=weak_symbols.o \
+        NETGROUP=-DNETGROUP TLI= VSYSLOG= BUGS= all \
+        EXTRA_CFLAGS="-DHAVE_STRERROR -DHAVE_WEAKSYMS -D_REENTRANT"
 
 # This is good for many SYSV+BSD hybrids with NIS, probably also for HP-UX 7.x.
 hpux hpux8 hpux9 hpux10:
@@ -391 +407 @@
 # the ones provided with this source distribution. The environ.c module
 # implements setenv(), getenv(), and putenv().
 
-AUX_OBJ= setenv.o
+#AUX_OBJ= setenv.o
 #AUX_OBJ= environ.o
 #AUX_OBJ= environ.o strcasecmp.o
 
@@ -454 +470 @@
 # host name aliases. Compile with -DSOLARIS_24_GETHOSTBYNAME_BUG to work
 # around this. The workaround does no harm on other Solaris versions.
 
-BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DLIBC_CALLS_STRTOK
+BUGS =
+#BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DLIBC_CALLS_STRTOK
 #BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DINET_ADDR_BUG
 #BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DSOLARIS_24_GETHOSTBYNAME_BUG
 
@@ -464 +481 @@
 # If your system supports NIS or YP-style netgroups, enable the following
 # macro definition. Netgroups are used only for host access control.
 #
-#NETGROUP= -DNETGROUP
+NETGROUP= -DNETGROUP
 
 ###############################################################
 # System dependencies: whether or not your system has vsyslog()
@@ -491 +508 @@
 # Uncomment the next definition to turn on the language extensions
 # (examples: allow, deny, banners, twist and spawn).
 # 
-#STYLE  = -DPROCESS_OPTIONS     # Enable language extensions.
+STYLE   = -DPROCESS_OPTIONS     # Enable language extensions.
 
 ################################################################
 # Optional: Changing the default disposition of logfile records
@@ -514 +531 @@
 #
 # The LOG_XXX names below are taken from the /usr/include/syslog.h file.
 
-FACILITY= LOG_MAIL      # LOG_MAIL is what most sendmail daemons use
+FACILITY= LOG_DAEMON    # LOG_MAIL is what most sendmail daemons use
 
 # The syslog priority at which successful connections are logged.
 
@@ -610 +627 @@
 # Paranoid mode implies hostname lookup. In order to disable hostname
 # lookups altogether, see the next section.
 
-PARANOID= -DPARANOID
+#PARANOID= -DPARANOID
 
 ########################################
 # Optional: turning off hostname lookups
@@ -623 +640 @@
 # In order to perform selective hostname lookups, disable paranoid
 # mode (see previous section) and comment out the following definition.
 
-HOSTNAME= -DALWAYS_HOSTNAME
+#HOSTNAME= -DALWAYS_HOSTNAME
 
 #############################################
 # Optional: Turning on host ADDRESS checking
@@ -649 +666 @@
 # source-routed traffic in the kernel. Examples: 4.4BSD derivatives,
 # Solaris 2.x, and Linux. See your system documentation for details.
 #
-# KILL_OPT= -DKILL_IP_OPTIONS
+KILL_OPT= -DKILL_IP_OPTIONS
 
 ## End configuration options
 ############################
 
 # Protection against weird shells or weird make programs.
 
+CC      = gcc
 SHELL   = /bin/sh
-.c.o:;  $(CC) $(CFLAGS) -c $*.c
+.c.o:;  $(CC) $(CFLAGS) -o $*.o -c $*.c
+
+SOMAJOR = 0
+SOMINOR = 7.6
+
+LIB     = libwrap.a
+SHLIB   = shared/libwrap.so.$(SOMAJOR).$(SOMINOR)
+SHLIBSOMAJ= shared/libwrap.so.$(SOMAJOR)
+SHLIBSO = shared/libwrap.so
+SHLIBFLAGS = -Lshared -lwrap
 
-CFLAGS  = -O -DFACILITY=$(FACILITY) $(ACCESS) $(PARANOID) $(NETGROUP) \
+shared/%.o: %.c
+        $(CC) $(CFLAGS) $(SHCFLAGS) -c $< -o $@
+
+CFLAGS  = -O2 -DFACILITY=$(FACILITY) $(ACCESS) $(PARANOID) $(NETGROUP) \
         $(BUGS) $(SYSTYPE) $(AUTH) $(UMASK) \
         -DREAL_DAEMON_DIR=\"$(REAL_DAEMON_DIR)\" $(STYLE) $(KILL_OPT) \
         -DSEVERITY=$(SEVERITY) -DRFC931_TIMEOUT=$(RFC931_TIMEOUT) \
         $(UCHAR) $(TABLES) $(STRINGS) $(TLI) $(EXTRA_CFLAGS) $(DOT) \
         $(VSYSLOG) $(HOSTNAME)
 
+SHLINKFLAGS = -shared -Xlinker -soname -Xlinker libwrap.so.$(SOMAJOR) -lc $(LIBS)
+SHCFLAGS = -fPIC -shared -D_REENTRANT
+
 LIB_OBJ= hosts_access.o options.o shell_cmd.o rfc931.o eval.o \
         hosts_ctl.o refuse.o percent_x.o clean_exit.o $(AUX_OBJ) \
         $(FROM_OBJ) fix_options.o socket.o tli.o workarounds.o \
         update.o misc.o diag.o percent_m.o myvsyslog.o
 
+SHLIB_OBJ= $(addprefix shared/, $(LIB_OBJ));
+
 FROM_OBJ= fromhost.o
 
 KIT     = README miscd.c tcpd.c fromhost.c hosts_access.c shell_cmd.c \
@@ -684 +719 @@
         refuse.c tcpdchk.8 setenv.c inetcf.c inetcf.h scaffold.c \
         scaffold.h tcpdmatch.8 README.NIS
 
-LIB     = libwrap.a
-
-all other: config-check tcpd tcpdmatch try-from safe_finger tcpdchk
+all other: config-check tcpd tcpdmatch try-from safe_finger tcpdchk $(LIB)
 
 # Invalidate all object files when the compiler options (CFLAGS) have changed.
 
 config-check:
         @set +e; test -n "$(REAL_DAEMON_DIR)" || { make; exit 1; }
-        @set +e; echo $(CFLAGS) >/tmp/cflags.$$$$ ; \
-        if cmp cflags /tmp/cflags.$$$$ ; \
-        then rm /tmp/cflags.$$$$ ; \
-        else mv /tmp/cflags.$$$$ cflags ; \
+        @set +e; echo $(CFLAGS) >cflags.new ; \
+        if cmp cflags cflags.new ; \
+        then rm cflags.new ; \
+        else mv cflags.new cflags ; \
         fi >/dev/null 2>/dev/null
+        @if [ ! -d shared ]; then mkdir shared; fi
 
 $(LIB): $(LIB_OBJ)
         rm -f $(LIB)
         $(AR) $(ARFLAGS) $(LIB) $(LIB_OBJ)
         -$(RANLIB) $(LIB)
 
-tcpd:   tcpd.o $(LIB)
-        $(CC) $(CFLAGS) -o $@ tcpd.o $(LIB) $(LIBS)
+$(SHLIB): $(SHLIB_OBJ)
+        rm -f $(SHLIB)
+        $(CC) -o $(SHLIB) $(SHLINKFLAGS) $(SHLIB_OBJ)
+        ln -s $(notdir $(SHLIB)) $(SHLIBSOMAJ)
+        ln -s $(notdir $(SHLIBSOMAJ)) $(SHLIBSO)
+
+tcpd:   tcpd.o $(SHLIB)
+        $(CC) $(CFLAGS) -o $@ tcpd.o $(SHLIBFLAGS)
 
-miscd:  miscd.o $(LIB)
-        $(CC) $(CFLAGS) -o $@ miscd.o $(LIB) $(LIBS)
+miscd:  miscd.o $(SHLIB)
+        $(CC) $(CFLAGS) -o $@ miscd.o $(SHLIBFLAGS)
 
-safe_finger: safe_finger.o $(LIB)
-        $(CC) $(CFLAGS) -o $@ safe_finger.o $(LIB) $(LIBS)
+safe_finger: safe_finger.o $(SHLIB)
+        $(CC) $(CFLAGS) -o $@ safe_finger.o $(SHLIBFLAGS)
 
 TCPDMATCH_OBJ = tcpdmatch.o fakelog.o inetcf.o scaffold.o
 
-tcpdmatch: $(TCPDMATCH_OBJ) $(LIB)
-        $(CC) $(CFLAGS) -o $@ $(TCPDMATCH_OBJ) $(LIB) $(LIBS)
+tcpdmatch: $(TCPDMATCH_OBJ) $(SHLIB)
+        $(CC) $(CFLAGS) -o $@ $(TCPDMATCH_OBJ) $(SHLIBFLAGS)
 
-try-from: try-from.o fakelog.o $(LIB)
-        $(CC) $(CFLAGS) -o $@ try-from.o fakelog.o $(LIB) $(LIBS)
+try-from: try-from.o fakelog.o $(SHLIB)
+        $(CC) $(CFLAGS) -o $@ try-from.o fakelog.o $(SHLIBFLAGS)
 
 TCPDCHK_OBJ = tcpdchk.o fakelog.o inetcf.o scaffold.o
 
-tcpdchk: $(TCPDCHK_OBJ) $(LIB)
-        $(CC) $(CFLAGS) -o $@ $(TCPDCHK_OBJ) $(LIB) $(LIBS)
+tcpdchk: $(TCPDCHK_OBJ) $(SHLIB)
+        $(CC) $(CFLAGS) -o $@ $(TCPDCHK_OBJ) $(SHLIBFLAGS)
+
+install: install-lib install-bin install-dev
+
+install-lib:
+        install -o root -g root -m 0755 $(SHLIB) ${DESTDIR}/usr/lib/
+        ln -sf $(notdir $(SHLIB)) ${DESTDIR}/usr/lib/$(notdir $(SHLIBSOMAJ))
+        ln -sf $(notdir $(SHLIBSOMAJ)) ${DESTDIR}/usr/lib/$(notdir $(SHLIBSO))
+
+install-bin:
+        install -o root -g root -m 0755 tcpd ${DESTDIR}/usr/sbin/
+        install -o root -g root -m 0755 tcpdchk ${DESTDIR}/usr/sbin/
+        install -o root -g root -m 0755 tcpdmatch ${DESTDIR}/usr/sbin/
+        install -o root -g root -m 0755 try-from ${DESTDIR}/usr/sbin/
+        install -o root -g root -m 0755 safe_finger ${DESTDIR}/usr/sbin/
+        install -o root -g root -m 0644 tcpd.8 ${DESTDIR}/usr/share/man/man8/
+        install -o root -g root -m 0644 tcpdchk.8 ${DESTDIR}/usr/share/man/man8/
+        install -o root -g root -m 0644 try-from.8 ${DESTDIR}/usr/share/man/man8/
+        install -o root -g root -m 0644 tcpdmatch.8 ${DESTDIR}/usr/share/man/man8/
+        install -o root -g root -m 0644 safe_finger.8 ${DESTDIR}/usr/share/man/man8/
+        install -o root -g root -m 0644 hosts_access.5 ${DESTDIR}/usr/share/man/man5/
+        install -o root -g root -m 0644 hosts_options.5 ${DESTDIR}/usr/share/man/man5/
+
+install-dev:
+        install -o root -g root -m 0644 hosts_access.3 ${DESTDIR}/usr/share/man/man3/
+        install -o root -g root -m 0644 tcpd.h ${DESTDIR}/usr/include/
+        install -o root -g root -m 0644 $(LIB) ${DESTDIR}/usr/lib/
+        ln -sf hosts_access.3 ${DESTDIR}/usr/share/man/man3/hosts_ctl.3
+        ln -sf hosts_access.3 ${DESTDIR}/usr/share/man/man3/request_init.3
+        ln -sf hosts_access.3 ${DESTDIR}/usr/share/man/man3/request_set.3
 
 shar:   $(KIT)
         @shar $(KIT)
@@ -739 +808 @@
 
 clean:
         rm -f tcpd miscd safe_finger tcpdmatch tcpdchk try-from *.[oa] core \
-        cflags
+        cflags libwrap*.so*
+        rm -rf shared
 
 tidy:   clean
         chmod -R a+r .
@@ -885 +955 @@
 update.o: mystdarg.h
 update.o: tcpd.h
 vfprintf.o: cflags
+weak_symbols.o: tcpd.h
 workarounds.o: cflags
 workarounds.o: tcpd.h

tcp_wrappers_7.6

@@ -35 +35 @@
 #ifdef IP_OPTIONS
     unsigned char optbuf[BUFFER_SIZE / 3], *cp;
     char    lbuf[BUFFER_SIZE], *lp;
+#if !defined(__GLIBC__)
     int     optsize = sizeof(optbuf), ipproto;
+#else /* __GLIBC__ */
+    size_t  optsize = sizeof(optbuf);
+    int     ipproto;
+#endif /* __GLIBC__ */
     struct protoent *ip;
     int     fd = request->fd;
     unsigned int opt;

tcp_wrappers_7.6

@@ -3 +3 @@
 hosts_access, hosts_ctl, request_init, request_set \- access control library
 .SH SYNOPSIS
 .nf
-#include "tcpd.h"
+#include <tcpd.h>
 
 extern int allow_severity;
 extern int deny_severity;

tcp_wrappers_7.6

@@ -8 +8 @@
 impatient reader is encouraged to skip to the EXAMPLES section for a
 quick introduction.
 .PP
-An extended version of the access control language is described in the
-\fIhosts_options\fR(5) document. The extensions are turned on at
-program build time by building with -DPROCESS_OPTIONS.
+The extended version of the access control language is described in the
+\fIhosts_options\fR(5) document. \fBNote that this language supersedes
+the meaning of \fIshell_command\fB as documented below.\fR
 .PP
 In the following text, \fIdaemon\fR is the the process name of a
 network daemon process, and \fIclient\fR is the name and/or address of
@@ -40 +40 @@
 character. This permits you to break up long lines so that they are
 easier to edit.
 .IP \(bu
-Blank lines or lines that begin with a `#\' character are ignored.
+Blank lines or lines that begin with a `#' character are ignored.
 This permits you to insert comments and whitespace so that the tables
 are easier to read.
 .IP \(bu
@@ -69 +69 @@
 .SH PATTERNS
 The access control language implements the following patterns:
 .IP \(bu
-A string that begins with a `.\' character. A host name is matched if
+A string that begins with a `.' character. A host name is matched if
 the last components of its name match the specified pattern.  For
-example, the pattern `.tue.nl\' matches the host name
-`wzv.win.tue.nl\'.
+example, the pattern `.tue.nl' matches the host name
+`wzv.win.tue.nl'.
 .IP \(bu
-A string that ends with a `.\' character. A host address is matched if
+A string that ends with a `.' character. A host address is matched if
 its first numeric fields match the given string.  For example, the
-pattern `131.155.\' matches the address of (almost) every host on the
+pattern `131.155.' matches the address of (almost) every host on the
 Eind\%hoven University network (131.155.x.x).
 .IP \(bu
-A string that begins with an `@\' character is treated as an NIS
+A string that begins with an `@' character is treated as an NIS
 (formerly YP) netgroup name. A host name is matched if it is a host
 member of the specified netgroup. Netgroup matches are not supported
 for daemon process names or for client user names.
 .IP \(bu
-An expression of the form `n.n.n.n/m.m.m.m\' is interpreted as a
-`net/mask\' pair. A host address is matched if `net\' is equal to the
-bitwise AND of the address and the `mask\'. For example, the net/mask
-pattern `131.155.72.0/255.255.254.0\' matches every address in the
-range `131.155.72.0\' through `131.155.73.255\'.
+An expression of the form `n.n.n.n/m.m.m.m' is interpreted as a
+`net/mask' pair. A host address is matched if `net' is equal to the
+bitwise AND of the address and the `mask'. For example, the net/mask
+pattern `131.155.72.0/255.255.254.0' matches every address in the
+range `131.155.72.0' through `131.155.73.255'.
+.IP \(bu
+A string that begins with a `/' character is treated as a file
+name. A host name or address is matched if it matches any host name
+or address pattern listed in the named file. The file format is
+zero or more lines with zero or more host name or address patterns
+separated by whitespace.  A file name pattern can be used anywhere
+a host name or address pattern can be used.
 .SH WILDCARDS
 The access control language supports explicit wildcards:
 .IP ALL
@@ -115 +122 @@
 .ne 6
 .SH OPERATORS
 .IP EXCEPT
-Intended use is of the form: `list_1 EXCEPT list_2\'; this construct
+Intended use is of the form: `list_1 EXCEPT list_2'; this construct
 matches anything that matches \fIlist_1\fR unless it matches
 \fIlist_2\fR.  The EXCEPT operator can be used in daemon_lists and in
 client_lists. The EXCEPT operator can be nested: if the control
-language would permit the use of parentheses, `a EXCEPT b EXCEPT c\'
-would parse as `(a EXCEPT (b EXCEPT c))\'.
+language would permit the use of parentheses, `a EXCEPT b EXCEPT c'
+would parse as `(a EXCEPT (b EXCEPT c))'.
 .br
 .ne 6
 .SH SHELL COMMANDS
 If the first-matched access control rule contains a shell command, that
 command is subjected to %<letter> substitutions (see next section).
 The result is executed by a \fI/bin/sh\fR child process with standard
-input, output and error connected to \fI/dev/null\fR.  Specify an `&\'
+input, output and error connected to \fI/dev/null\fR.  Specify an `&'
 at the end of the command if you do not want to wait until it has
 completed.
 .PP
@@ -159 +166 @@
 .IP %u
 The client user name (or "unknown").
 .IP %%
-Expands to a single `%\' character.
+Expands to a single `%' character.
 .PP
 Characters in % expansions that may confuse the shell are replaced by
 underscores.
@@ -243 +250 @@
 less trustworthy. It is possible for an intruder to spoof both the
 client connection and the IDENT lookup, although doing so is much
 harder than spoofing just a client connection. It may also be that
-the client\'s IDENT server is lying.
+the client's IDENT server is lying.
 .PP
-Note: IDENT lookups don\'t work with UDP services. 
+Note: IDENT lookups don't work with UDP services. 
 .SH EXAMPLES
 The language is flexible enough that different types of access control
 policy can be expressed with a minimum of fuss. Although the language
@@ -285 +292 @@
 .br
 ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
 .PP
-The first rule permits access from hosts in the local domain (no `.\'
+The first rule permits access from hosts in the local domain (no `.'
 in the host name) and from members of the \fIsome_netgroup\fP
 netgroup.  The second rule permits access from all hosts in the
 \fIfoobar.edu\fP domain (notice the leading dot), with the exception of
@@ -322 +329 @@
 /etc/hosts.deny:
 .in +3
 .nf
-in.tftpd: ALL: (/some/where/safe_finger -l @%h | \\
-        /usr/ucb/mail -s %d-%h root) &
+in.tftpd: ALL: (/usr/sbin/safe_finger -l @%h | \\
+        /usr/bin/mail -s %d-%h root) &
 .fi
 .PP
 The safe_finger command comes with the tcpd wrapper and should be
@@ -349 +356 @@
 capacity of an internal buffer; when an access control rule is not
 terminated by a newline character; when the result of %<letter>
 expansion would overflow an internal buffer; when a system call fails
-that shouldn\'t.  All problems are reported via the syslog daemon.
+that shouldn't.  All problems are reported via the syslog daemon.
 .SH FILES
 .na
 .nf

tcp_wrappers_7.6

@@ -240 +240 @@
     }
 }
 
+/* hostfile_match - look up host patterns from file */
+
+static int hostfile_match(path, host)
+char   *path;
+struct hosts_info *host;
+{
+    char    tok[BUFSIZ];
+    int     match = NO;
+    FILE   *fp;
+
+    if ((fp = fopen(path, "r")) != 0) {
+        while (fscanf(fp, "%s", tok) == 1 && !(match = host_match(tok, host)))
+            /* void */ ;
+        fclose(fp);
+    } else if (errno != ENOENT) {
+        tcpd_warn("open %s: %m", path);
+    }
+    return (match);
+}
+
 /* host_match - match host name and/or address against pattern */
 
 static int host_match(tok, host)
@@ -267 +287 @@
         tcpd_warn("netgroup support is disabled");      /* not tcpd_jump() */
         return (NO);
 #endif
+    } else if (tok[0] == '/') {                         /* /file hack */
+        return (hostfile_match(tok, host));
     } else if (STR_EQ(tok, "KNOWN")) {          /* check address and name */
         char   *name = eval_hostname(host);
         return (STR_NE(eval_hostaddr(host), unknown) && HOSTNAME_KNOWN(name));

hosts_options.5

@@ -58 +58 @@
 Execute, in a child process, the specified shell command, after
 performing the %<letter> expansions described in the hosts_access(5)
 manual page.  The command is executed with stdin, stdout and stderr
-connected to the null device, so that it won\'t mess up the
+connected to the null device, so that it won't mess up the
 conversation with the client host. Example:
 .sp
 .nf
 .ti +3
-spawn (/some/where/safe_finger -l @%h | /usr/ucb/mail root) &
+spawn (/usr/sbin/safe_finger -l @%h | /usr/bin/mail root) &
 .fi
 .sp
 executes, in a background child process, the shell command "safe_finger

tcp_wrappers_7.6

@@ -473 +473 @@
 #ifdef LOG_CRON
     "cron", LOG_CRON,
 #endif
+#ifdef LOG_FTP
+    "ftp", LOG_FTP,
+#endif
 #ifdef LOG_LOCAL0
     "local0", LOG_LOCAL0,
 #endif

tcp_wrappers_7.6

@@ -13 +13 @@
 #include <string.h>
 
 extern int errno;
-#ifndef SYS_ERRLIST_DEFINED
+#if !defined(SYS_ERRLIST_DEFINED) && !defined(HAVE_STRERROR)
 extern char *sys_errlist[];
 extern int sys_nerr;
 #endif
@@ -29 +29 @@
 
     while (*bp = *cp)
         if (*cp == '%' && cp[1] == 'm') {
+#ifdef HAVE_STRERROR
+            strcpy(bp, strerror(errno));
+#else
             if (errno < sys_nerr && errno > 0) {
                 strcpy(bp, sys_errlist[errno]);
             } else {
                 sprintf(bp, "Unknown error %d", errno);
             }
+#endif
             bp += strlen(bp);
             cp += 2;
         } else {

tcp_wrappers_7.6

@@ -33 +33 @@
 
 int     rfc931_timeout = RFC931_TIMEOUT;/* Global so it can be changed */
 
-static jmp_buf timebuf;
+static sigjmp_buf timebuf;
 
 /* fsocket - open stdio stream on top of socket */
 
@@ -62 +62 @@
 static void timeout(sig)
 int     sig;
 {
-    longjmp(timebuf, sig);
+    siglongjmp(timebuf, sig);
 }
 
 /* rfc931 - return remote user name, given socket structures */
@@ -99 +99 @@
          * Set up a timer so we won't get stuck while waiting for the server.
          */
 
-        if (setjmp(timebuf) == 0) {
+        if (sigsetjmp(timebuf,1) == 0) {
             signal(SIGALRM, timeout);
             alarm(rfc931_timeout);
 

tcp_wrappers_7.6

@@ +1 @@
+.TH SAFE_FINGER 8 "21th June 1997" Linux "Linux Programmer's Manual"
+.SH NAME
+safe_finger \- finger client wrapper that protects against nasty stuff
+from finger servers
+.SH SYNOPSIS
+.B safe_finger [finger_options]
+.SH DESCRIPTION
+The
+.B safe_finger
+command protects against nasty stuff from finger servers. Use this
+program for automatic reverse finger probes from the
+.B tcp_wrapper
+.B (tcpd)
+, not the raw finger command. The
+.B safe_finger
+command makes sure that the finger client is not run with root
+privileges. It also runs the finger client with a defined PATH
+environment.
+.B safe_finger
+will also protect you from problems caused by the output of some
+finger servers. The problem: some programs may react to stuff in
+the first column. Other programs may get upset by thrash anywhere
+on a line. File systems may fill up as the finger server keeps
+sending data. Text editors may bomb out on extremely long lines.
+The finger server may take forever because it is somehow wedged.
+.B safe_finger
+takes care of all this badness.
+.SH SEE ALSO
+.BR hosts_access (5),
+.BR hosts_options (5),
+.BR tcpd (8)
+.SH AUTHOR
+Wietse Venema, Eindhoven University of Technology, The Netherlands.
+

tcp_wrappers_7.6

@@ -26 +26 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <pwd.h>
+#include <syslog.h>
 
 extern void exit();
 
 /* Local stuff */
 
-char    path[] = "PATH=/bin:/usr/bin:/usr/ucb:/usr/bsd:/etc:/usr/etc:/usr/sbin";
+char    path[] = "PATH=/bin:/usr/bin:/sbin:/usr/sbin";
 
 #define TIME_LIMIT      60              /* Do not keep listinging forever */
 #define INPUT_LENGTH    100000          /* Do not keep listinging forever */
 #define LINE_LENGTH     128             /* Editors can choke on long lines */
 #define FINGER_PROGRAM  "finger"        /* Most, if not all, UNIX systems */
 #define UNPRIV_NAME     "nobody"        /* Preferred privilege level */
-#define UNPRIV_UGID     32767           /* Default uid and gid */
+#define UNPRIV_UGID     65534           /* Default uid and gid */
 
 int     finger_pid;
+int     allow_severity = SEVERITY;
+int     deny_severity = LOG_WARNING;
 
 void    cleanup(sig)
 int     sig;

tcp_wrappers_7.6

@@ -180 +180 @@
 
 /* ARGSUSED */
 
-void    rfc931(request)
-struct request_info *request;
+void    rfc931(rmt_sin, our_sin, dest)
+struct sockaddr_in *rmt_sin;
+struct sockaddr_in *our_sin;
+char   *dest;
 {
-    strcpy(request->user, unknown);
+    strcpy(dest, unknown);
 }
 
 /* check_path - examine accessibility */

tcp_wrappers_7.6

@@ -76 +76 @@
 {
     static struct sockaddr_in client;
     static struct sockaddr_in server;
+#if !defined (__GLIBC__)
     int     len;
+#else /* __GLIBC__ */
+    size_t  len;
+#endif /* __GLIBC__ */
     char    buf[BUFSIZ];
     int     fd = request->fd;
 
@@ -224 +228 @@
 {
     char    buf[BUFSIZ];
     struct sockaddr_in sin;
+#if !defined(__GLIBC__)
     int     size = sizeof(sin);
+#else /* __GLIBC__ */
+    size_t  size = sizeof(sin);
+#endif /* __GLIBC__ */
 
     /*
      * Eat up the not-yet received datagram. Some systems insist on a

tcp_wrappers_7.6

@@ -94 +94 @@
 .PP
 The example assumes that the network daemons live in /usr/etc. On some
 systems, network daemons live in /usr/sbin or in /usr/libexec, or have
-no `in.\' prefix to their name.
+no `in.' prefix to their name.
 .SH EXAMPLE 2
 This example applies when \fItcpd\fR expects that the network daemons
 are left in their original place.
@@ -110 +110 @@
 becomes:
 .sp
 .ti +5
-finger  stream  tcp  nowait  nobody  /some/where/tcpd     in.fingerd
+finger  stream  tcp  nowait  nobody  /usr/sbin/tcpd       in.fingerd
 .sp
 .fi
 .PP
 The example assumes that the network daemons live in /usr/etc. On some
 systems, network daemons live in /usr/sbin or in /usr/libexec, the
-daemons have no `in.\' prefix to their name, or there is no userid
+daemons have no `in.' prefix to their name, or there is no userid
 field in the inetd configuration file.
 .PP
 Similar changes will be needed for the other services that are to be
-covered by \fItcpd\fR.  Send a `kill -HUP\' to the \fIinetd\fR(8)
+covered by \fItcpd\fR.  Send a `kill -HUP' to the \fIinetd\fR(8)
 process to make the changes effective. AIX users may also have to
-execute the `inetimp\' command.
+execute the `inetimp' command.
 .SH EXAMPLE 3
 In the case of daemons that do not live in a common directory ("secret"
 or otherwise), edit the \fIinetd\fR configuration file so that it
 specifies an absolute path name for the process name field. For example:
 .nf
 .sp
-    ntalk  dgram  udp  wait  root  /some/where/tcpd  /usr/local/lib/ntalkd
+    ntalk  dgram  udp  wait  root  /usr/sbin/tcpd  /usr/sbin/in.ntalkd
 .sp
 .fi
 .PP

tcp_wrappers_7.6

@@ -4 +4 @@
   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
   */
 
+#ifndef _TCPWRAPPERS_TCPD_H
+#define _TCPWRAPPERS_TCPD_H
+
+/* someone else may have defined this */
+#undef  __P
+
+/* use prototypes if we have an ANSI C compiler or are using C++ */
+#if defined(__STDC__) || defined(__cplusplus)
+#define __P(args)       args
+#else
+#define __P(args)       ()
+#endif
+
+/* Need definitions of struct sockaddr_in and FILE. */
+#include <netinet/in.h>
+#include <stdio.h>
+
+__BEGIN_DECLS
+
 /* Structure to describe one communications endpoint. */
 
 #define STRING_LENGTH   128             /* hosts, users, processes */
@@ -25 +44 @@
     char    pid[10];                    /* access via eval_pid(request) */
     struct host_info client[1];         /* client endpoint info */
     struct host_info server[1];         /* server endpoint info */
-    void  (*sink) ();                   /* datagram sink function or 0 */
-    void  (*hostname) ();               /* address to printable hostname */
-    void  (*hostaddr) ();               /* address to printable address */
-    void  (*cleanup) ();                /* cleanup function or 0 */
+    void  (*sink) __P((int));           /* datagram sink function or 0 */
+    void  (*hostname) __P((struct host_info *)); /* address to printable hostname */
+    void  (*hostaddr) __P((struct host_info *)); /* address to printable address */
+    void  (*cleanup) __P((struct request_info *)); /* cleanup function or 0 */
     struct netconfig *config;           /* netdir handle */
 };
 
@@ -61 +80 @@
 /* Global functions. */
 
 #if defined(TLI) || defined(PTX) || defined(TLI_SEQUENT)
-extern void fromhost();                 /* get/validate client host info */
+extern void fromhost __P((struct request_info *));      /* get/validate client host info */
 #else
 #define fromhost sock_host              /* no TLI support needed */
 #endif
 
-extern int hosts_access();              /* access control */
-extern void shell_cmd();                /* execute shell command */
-extern char *percent_x();               /* do %<char> expansion */
-extern void rfc931();                   /* client name from RFC 931 daemon */
-extern void clean_exit();               /* clean up and exit */
-extern void refuse();                   /* clean up and exit */
-extern char *xgets();                   /* fgets() on steroids */
-extern char *split_at();                /* strchr() and split */
-extern unsigned long dot_quad_addr();   /* restricted inet_addr() */
+extern void shell_cmd __P((char *));    /* execute shell command */
+extern char *percent_x __P((char *, int, char *, struct request_info *)); /* do %<char> expansion */
+extern void rfc931 __P((struct sockaddr_in *, struct sockaddr_in *, char *)); /* client name from RFC 931 daemon */
+extern void clean_exit __P((struct request_info *)); /* clean up and exit */
+extern void refuse __P((struct request_info *));        /* clean up and exit */
+extern char *xgets __P((char *, int, FILE *));  /* fgets() on steroids */
+extern char *split_at __P((char *, int));       /* strchr() and split */
+extern unsigned long dot_quad_addr __P((char *)); /* restricted inet_addr() */
 
 /* Global variables. */
 
+#ifdef HAVE_WEAKSYMS
+extern int allow_severity __attribute__ ((weak)); /* for connection logging */
+extern int deny_severity __attribute__ ((weak)); /* for connection logging */
+#else
 extern int allow_severity;              /* for connection logging */
 extern int deny_severity;               /* for connection logging */
+#endif
+
 extern char *hosts_allow_table;         /* for verification mode redirection */
 extern char *hosts_deny_table;          /* for verification mode redirection */
 extern int hosts_access_verbose;        /* for verbose matching mode */
@@ -92 +116 @@
   */
 
 #ifdef __STDC__
+extern int hosts_access(struct request_info *request);
+extern int hosts_ctl(char *daemon, char *client_name, char *client_addr, 
+                     char *client_user);
 extern struct request_info *request_init(struct request_info *,...);
 extern struct request_info *request_set(struct request_info *,...);
 #else
+extern int hosts_access();
+extern int hosts_ctl();
 extern struct request_info *request_init();     /* initialize request */
 extern struct request_info *request_set();      /* update request structure */
 #endif
@@ -117 +146 @@
   * host_info structures serve as caches for the lookup results.
   */
 
-extern char *eval_user();               /* client user */
-extern char *eval_hostname();           /* printable hostname */
-extern char *eval_hostaddr();           /* printable host address */
-extern char *eval_hostinfo();           /* host name or address */
-extern char *eval_client();             /* whatever is available */
-extern char *eval_server();             /* whatever is available */
+extern char *eval_user __P((struct request_info *));    /* client user */
+extern char *eval_hostname __P((struct host_info *));   /* printable hostname */
+extern char *eval_hostaddr __P((struct host_info *));   /* printable host address */
+extern char *eval_hostinfo __P((struct host_info *));   /* host name or address */
+extern char *eval_client __P((struct request_info *));  /* whatever is available */
+extern char *eval_server __P((struct request_info *));  /* whatever is available */
 #define eval_daemon(r)  ((r)->daemon)   /* daemon process name */
 #define eval_pid(r)     ((r)->pid)      /* process id */
 
 /* Socket-specific methods, including DNS hostname lookups. */
 
-extern void sock_host();                /* look up endpoint addresses */
-extern void sock_hostname();            /* translate address to hostname */
-extern void sock_hostaddr();            /* address to printable address */
+/* look up endpoint addresses */
+extern void sock_host __P((struct request_info *));
+/* translate address to hostname */
+extern void sock_hostname __P((struct host_info *));
+/* address to printable address */
+extern void sock_hostaddr __P((struct host_info *));
+
 #define sock_methods(r) \
         { (r)->hostname = sock_hostname; (r)->hostaddr = sock_hostaddr; }
 
 /* The System V Transport-Level Interface (TLI) interface. */
 
 #if defined(TLI) || defined(PTX) || defined(TLI_SEQUENT)
-extern void tli_host();                 /* look up endpoint addresses etc. */
+extern void tli_host __P((struct request_info *));      /* look up endpoint addresses etc. */
 #endif
 
  /*
@@ -178 +211 @@
   * behavior.
   */
 
-extern void process_options();          /* execute options */
+extern void process_options __P((char *, struct request_info *)); /* execute options */
 extern int dry_run;                     /* verification flag */
 
 /* Bug workarounds. */
@@ -217 +250 @@
 #define strtok  my_strtok
 extern char *my_strtok();
 #endif
+
+__END_DECLS
+
+#endif /* tcpd.h */

tcp_wrappers_7.6

@@ -350 +350 @@
 {
     if (pat[0] == '@') {
         tcpd_warn("%s: daemon name begins with \"@\"", pat);
+    } else if (pat[0] == '/') {
+        tcpd_warn("%s: daemon name begins with \"/\"", pat);
     } else if (pat[0] == '.') {
         tcpd_warn("%s: daemon name begins with dot", pat);
     } else if (pat[strlen(pat) - 1] == '.') {
@@ -382 +384 @@
 {
     if (pat[0] == '@') {                        /* @netgroup */
         tcpd_warn("%s: user name begins with \"@\"", pat);
+    } else if (pat[0] == '/') {
+        tcpd_warn("%s: user name begins with \"/\"", pat);
     } else if (pat[0] == '.') {
         tcpd_warn("%s: user name begins with dot", pat);
     } else if (pat[strlen(pat) - 1] == '.') {
@@ -402 +406 @@
 static int check_host(pat)
 char   *pat;
 {
+    char    buf[BUFSIZ];
     char   *mask;
     int     addr_count = 1;
+    FILE   *fp;
+    struct tcpd_context saved_context;
+    char   *cp;
+    char   *wsp = " \t\r\n";
 
     if (pat[0] == '@') {                        /* @netgroup */
 #ifdef NO_NETGRENT
@@ -422 +431 @@
         tcpd_warn("netgroup support disabled");
 #endif
 #endif
+    } else if (pat[0] == '/') {                 /* /path/name */
+        if ((fp = fopen(pat, "r")) != 0) {
+            saved_context = tcpd_context;
+            tcpd_context.file = pat;
+            tcpd_context.line = 0;
+            while (fgets(buf, sizeof(buf), fp)) {
+                tcpd_context.line++;
+                for (cp = strtok(buf, wsp); cp; cp = strtok((char *) 0, wsp))
+                    check_host(cp);
+            }
+            tcpd_context = saved_context;
+            fclose(fp);
+        } else if (errno != ENOENT) {
+            tcpd_warn("open %s: %m", pat);
+        }
     } else if (mask = split_at(pat, '/')) {     /* network/netmask */
         if (dot_quad_addr(pat) == INADDR_NONE
             || dot_quad_addr(mask) == INADDR_NONE)

tcp_wrappers_7.6

@@ +1 @@
+.TH TRY-FROM 8 "21th June 1997" Linux "Linux Programmer's Manual"
+.SH NAME
+try-from \- test program for the tcp_wrapper
+.SH SYNOPSIS
+.B try-from
+.SH DESCRIPTION
+The
+.B try-from
+command can be called via a remote shell command to find out
+if the hostname and address are properly recognized
+by the
+.B tcp_wrapper
+library, if username lookup works, and (SysV only) if the TLI
+on top of IP heuristics work. Diagnostics are reported through
+.BR syslog (3)
+and redirected to stderr.
+
+Example:
+
+rsh host /some/where/try-from
+
+.SH SEE ALSO
+.BR hosts_access (5),
+.BR hosts_options (5),
+.BR tcpd (8)
+.SH AUTHOR
+Wietse Venema, Eindhoven University of Technology, The Netherlands.
+

tcp_wrappers_7.6

@@ +1 @@
+ /*
+  * @(#) weak_symbols.h 1.5 99/12/29 23:50
+  * 
+  * Author: Anthony Towns <ajt@debian.org>
+  */
+
+#ifdef HAVE_WEAKSYMS
+#include <syslog.h>
+int deny_severity = LOG_WARNING;
+int allow_severity = SEVERITY; 
+#endif

tcp_wrappers_7.6

@@ -163 +163 @@
 int     fix_getpeername(sock, sa, len)
 int     sock;
 struct sockaddr *sa;
+#if !defined(__GLIBC__)
 int    *len;
+#else /* __GLIBC__ */
+size_t *len;
+#endif /* __GLIBC__ */
 {
     int     ret;
     struct sockaddr_in *sin = (struct sockaddr_in *) sa;