Goodbye, MIT pthreads... you were a handy reference implementation

1 files changed, 0 insertions, 168 deletions

diff --git a/lib/libpthread/net/res_search.c b/lib/libpthread/net/res_search.c
deleted file mode 100644
index 64cddea20d4..00000000000
--- a/lib/libpthread/net/res_search.c
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (c) 1985, 1988 Regents of the University of California.
- * 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 the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *	  may be used to endorse or promote products derived from this software
- *	  without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-/*static char *sccsid = "from: @(#)res_search.c	6.45 (Berkeley) 2/24/91";*/
-static char *rcsid = "$Id: res_search.c,v 1.1 1998/07/21 13:19:47 peter Exp $";
-#endif /* LIBC_SCCS and not lint */
-
-#include <pthread.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <resolv.h>
-#include <netdb.h>
-#include "res_internal.h"
-
-static char *search_aliases(const char *name, char *buf, int bufsize);
-
-int res_search(const char *name, int class, int type, unsigned char *answer,
-			   int anslen)
-{
-	struct res_data *data;
-	const char *p;
-	int num_dots, len, result, no_data = 0, error;
-	char buf[2 * MAXDNAME + 2], *domain, **dptr, *alias;
-
-	data = _res_init();
-	if (!data)
-		return -1;
-
-	/* Count the dots in name, and get a pointer to the end of name. */
-	num_dots = 0;
-	for (p = name; *p; p++) {
-		if (*p == '.')
-			num_dots++;
-	}
-	len = p - name;
-
-	/* If there aren't any dots, check to see if name is an alias for
-	 * another host.  If so, try the resolved alias as a fully-qualified
-	 * name. */
-	alias = search_aliases(name, buf, sizeof(buf));
-	if (alias != NULL)
-		return res_query(alias, class, type, answer, anslen);
-
-	/* If there's a trailing dot, try to strip it off and query the name. */
-	if (len > 0 && p[-1] == '.') {
-		if (len > sizeof(buf)) {
-			/* It's too long; just query the original name. */
-			return res_query(name, class, type, answer, anslen);
-		} else {
-			/* Copy the name without the trailing dot and query. */
-			memcpy(buf, name, len - 1);
-			buf[len] = 0;
-			return res_query(buf, class, type, answer, anslen);
-		}
-	}
-
-	if (data->state.options & RES_DNSRCH) {
-		/* If RES_DNSRCH is set, query all the domains until we get a
-		 * definitive answer. */
-		for (dptr = data->state.dnsrch; *dptr; dptr++) {
-			domain = *dptr;
-			sprintf(buf, "%.*s.%.*s", MAXDNAME, name, MAXDNAME, domain);
-			result = res_query(buf, class, type, answer, anslen);
-			if (result > 0)
-				return result;
-			if (data->errval == NO_DATA)
-				no_data = 1;
-			else if (data->errval != HOST_NOT_FOUND)
-				break;
-		}
-	} else if (num_dots == 0 && data->state.options & RES_DEFNAMES) {
-		/* If RES_DEFNAMES is set and there is no dot, query the default
-		 * domain. */
-		domain = data->state.defdname;
-		sprintf(buf, "%.*s.%.%s", MAXDNAME, name, MAXDNAME, domain);
-		result = res_query(buf, class, type, answer, anslen);
-		if (result > 0)
-			return result;
-		if (data->errval == NO_DATA)
-			no_data = 1;
-	}
-
-	/* If all the domain queries failed, try the name as fully-qualified.
-	 * Only do this if there is at least one dot in the name. */
-	if (num_dots > 0) {
-		result = res_query(name, class, type, answer, anslen);
-		if (result > 0)
-			return result;
-	}
-
-	if (no_data)
-		data->errval = NO_DATA;
-
-	return -1;
-}
-
-static char *search_aliases(const char *name, char *buf, int bufsize)
-{
-	FILE *fp;
-	char *filename, *p;
-	int len;
-
-	filename = getenv("HOSTALIASES");
-	if (filename == NULL)
-		return NULL;
-
-	fp = fopen(filename, "r");
-	if (fp == NULL)
-		return NULL;
-
-	len = strlen(name);
-	while (fgets(buf, bufsize, fp)) {
-
-		/* Get the first word from the buffer. */
-		p = buf;
-		while (*p && !isspace(*p))
-			p++;
-		if (!*p)
-			break;
-
-		/* Null-terminate the first word and compare it with the name. */
-		*p = 0;
-		if (strcasecmp(buf, name) != 0)
-			continue;
-
-		p++;
-		while (isspace(*p))
-			p++;
-		fclose(fp);
-		return (*p) ? p : NULL;
-	}
-
-	fclose(fp);
-	return NULL;
-}
-