tcp-wrappers: patch up crufty code, fix w/musl

pkgs/os-specific/linux/tcp-wrappers/cdecls.patch

···
+__BEGIN_DECLS/__END_DECLS are BSD specific and not defined in musl
+glibc and uclibc had sys/cdefs.h doing it.
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <[e-mail]>
+
+Index: tcp_wrappers_7.6/tcpd.h
+===================================================================
+--- tcp_wrappers_7.6.orig/tcpd.h
++++ tcp_wrappers_7.6/tcpd.h
+@@ -11,7 +11,9 @@
+ #include <netinet/in.h>
+ #include <stdio.h>
+ 
+-__BEGIN_DECLS
++#ifdef __cplusplus
++extern "C" {
++#endif
+ 
+ /* Structure to describe one communications endpoint. */
+ 
+@@ -252,6 +254,8 @@ extern char *fix_strtok();
+ extern char *my_strtok();
+ #endif
+ 
+-__END_DECLS
++#ifdef __cplusplus
++}
++#endif
+ 
+ #endif

pkgs/os-specific/linux/tcp-wrappers/default.nix

···
     substituteInPlace debian/patches/13_shlib_weaksym --replace STRINGS STRINGDEFS
   '';
 
+  # Fix __BEGIN_DECLS usage (even if it wasn't non-standard, this doesn't include sys/cdefs.h)
+  patches = [ ./cdecls.patch ];
+
+  postPatch = stdenv.lib.optionalString stdenv.hostPlatform.isMusl ''
+    substituteInPlace Makefile \
+      --replace '-DNETGROUP' '-DUSE_GETDOMAIN'
+  '';
+
   buildInputs = [ libnsl ];
 
   makeFlags = [ "REAL_DAEMON_DIR=$(out)/bin" "linux" ];

pkgs/os-specific/linux/tcp-wrappers/tcp-wrappers-7.6-headers.patch

···
+--- a/options.c
++++ b/options.c
+@@ -34,6 +34,8 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
++#include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/param.h>
+ #include <sys/socket.h>
+--- a/safe_finger.c
++++ b/safe_finger.c
+@@ -20,6 +20,11 @@
+ 
+ /* System libraries */
+ 
++#include <unistd.h>
++#include <fcntl.h>
++#include <stdlib.h>
++#include <sys/wait.h>
++#include <grp.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <signal.h>
+@@ -27,7 +31,7 @@
+ #include <ctype.h>
+ #include <pwd.h>
+ 
+-extern void exit();
++int pipe_stdin(char **argv);
+ 
+ /* Local stuff */
+ 
+--- a/scaffold.c
++++ b/scaffold.c
+@@ -10,6 +10,7 @@
+ 
+ /* System libraries. */
+ 
++#include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <sys/socket.h>
+@@ -27,7 +27,4 @@
+ #endif
+ 
+-#ifndef INET6
+-extern char *malloc();
+-#endif
+ 
+ /* Application-specific. */
+--- a/shell_cmd.c
++++ b/shell_cmd.c
+@@ -14,6 +14,10 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
++#include <stdlib.h>
++#include <fcntl.h>
++#include <sys/wait.h>
+ #include <sys/types.h>
+ #include <sys/param.h>
+ #include <signal.h>
+@@ -25,8 +25,6 @@
+ #include <syslog.h>
+ #include <string.h>
+ 
+-extern void exit();
+-
+ /* Local stuff. */
+ 
+ #include "tcpd.h"
+--- a/tcpdchk.c
++++ b/tcpdchk.c
+@@ -20,6 +20,8 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
++#include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #ifdef INET6
+@@ -35,10 +36,7 @@
+ #include <netdb.h>
+ #include <string.h>
+ 
+-extern int errno;
+-extern void exit();
+-extern int optind;
+-extern char *optarg;
++int cidr_mask_addr(char *str);
+ 
+ #ifndef INADDR_NONE
+ #define INADDR_NONE     (-1)		/* XXX should be 0xffffffff */
+--- a/clean_exit.c
++++ b/clean_exit.c
+@@ -13,8 +13,8 @@
+ #endif
+ 
+ #include <stdio.h>
+-
+-extern void exit();
++#include <unistd.h>
++#include <stdlib.h>
+ 
+ #include "tcpd.h"
+ 
+--- a/hosts_access.c
++++ b/hosts_access.c
+@@ -23,6 +23,7 @@
+ 
+ /* System libraries. */
+ 
++#include <stdlib.h>
+ #include <sys/types.h>
+ #ifdef INT32_T
+     typedef uint32_t u_int32_t;
+@@ -43,8 +44,8 @@
+ #include <netdb.h>
+ #endif
+ 
+-extern char *fgets();
+-extern int errno;
++static int match_pattern_ylo(const char *s, const char *pattern);
++int cidr_mask_addr(char *str);
+ 
+ #ifndef	INADDR_NONE
+ #define	INADDR_NONE	(-1)		/* XXX should be 0xffffffff */
+--- a/inetcf.c
++++ b/inetcf.c
+@@ -9,15 +9,14 @@
+ static char sccsid[] = "@(#) inetcf.c 1.7 97/02/12 02:13:23";
+ #endif
+ 
++#include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <stdio.h>
+ #include <errno.h>
+ #include <string.h>
+ 
+-extern int errno;
+-extern void exit();
+-
++#include "scaffold.h"
+ #include "tcpd.h"
+ #include "inetcf.h"
+ 
+--- a/percent_x.c
++++ b/percent_x.c
+@@ -16,12 +16,12 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
++#include <stdlib.h>
+ #include <stdio.h>
+ #include <syslog.h>
+ #include <string.h>
+ 
+-extern void exit();
+-
+ /* Local stuff. */
+ 
+ #include "tcpd.h"
+--- a/rfc931.c
++++ b/rfc931.c
+@@ -15,6 +15,7 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
+ #include <stdio.h>
+ #include <syslog.h>
+ #include <sys/types.h>
+--- a/tcpd.c
++++ b/tcpd.c
+@@ -16,6 +16,7 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
+ #include <sys/types.h>
+ #include <sys/param.h>
+ #include <sys/stat.h>
+@@ -39,6 +39,8 @@
+ #include "patchlevel.h"
+ #include "tcpd.h"
+ 
++void fix_options(struct request_info *request);
++
+ int     allow_severity = SEVERITY;	/* run-time adjustable */
+ int     deny_severity = LOG_WARNING;	/* ditto */
+ 
+--- a/tcpdmatch.c
++++ b/tcpdmatch.c
+@@ -19,6 +19,8 @@
+ 
+ /* System libraries. */
+ 
++#include <unistd.h>
++#include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <sys/socket.h>
+@@ -30,9 +32,6 @@
+ #include <setjmp.h>
+ #include <string.h>
+ 
+-extern void exit();
+-extern int optind;
+-extern char *optarg;
+ 
+ #ifndef	INADDR_NONE
+ #define	INADDR_NONE	(-1)		/* XXX should be 0xffffffff */
+--- a/update.c
++++ b/update.c
+@@ -19,6 +19,7 @@
+ 
+ /* System libraries */
+ 
++#include <unistd.h>
+ #include <stdio.h>
+ #include <syslog.h>
+ #include <string.h>
+--- a/misc.c
++++ b/misc.c
+@@ -14,11 +14,10 @@
+ #include <arpa/inet.h>
+ #include <stdio.h>
+ #include <string.h>
++#include <stdlib.h>
+ 
+ #include "tcpd.h"
+ 
+-extern char *fgets();
+-
+ #ifndef	INADDR_NONE
+ #define	INADDR_NONE	(-1)		/* XXX should be 0xffffffff */
+ #endif
+--- a/fix_options.c
++++ b/fix_options.c
+@@ -32,6 +32,7 @@
+ 
+ /* fix_options - get rid of IP-level socket options */
+ 
++void
+ fix_options(request)
+ struct request_info *request;
+ {
+@@ -38,11 +38,8 @@
+ #ifdef IP_OPTIONS
+     unsigned char optbuf[BUFFER_SIZE / 3], *cp;
+     char    lbuf[BUFFER_SIZE], *lp;
+-#ifdef __GLIBC__
+-    size_t  optsize = sizeof(optbuf), ipproto;
+-#else
+-    int     optsize = sizeof(optbuf), ipproto;
+-#endif
++    socklen_t optsize = sizeof(optbuf);
++    int ipproto;
+     struct protoent *ip;
+     int     fd = request->fd;
+     unsigned int opt;
+--- a/socket.c
++++ b/socket.c
+@@ -95,11 +95,7 @@
+     static struct sockaddr_in client;
+     static struct sockaddr_in server;
+ #endif
+-#ifdef __GLIBC__
+-    size_t  len;
+-#else
+-    int     len;
+-#endif
++    socklen_t len;
+     char    buf[BUFSIZ];
+     int     fd = request->fd;
+ 
+@@ -430,11 +426,7 @@
+ #else
+     struct sockaddr_in sin;
+ #endif
+-#ifdef __GLIBC__
+-    size_t  size = sizeof(sin);
+-#else
+-    int     size = sizeof(sin);
+-#endif
++    socklen_t size;
+ 
+     /*
+      * Eat up the not-yet received datagram. Some systems insist on a