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Diffstat (limited to 'usr/src/lib/libresolv2_joy/common/irs/gethostent_r.c')
-rw-r--r--usr/src/lib/libresolv2_joy/common/irs/gethostent_r.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/usr/src/lib/libresolv2_joy/common/irs/gethostent_r.c b/usr/src/lib/libresolv2_joy/common/irs/gethostent_r.c
new file mode 100644
index 0000000000..50e03f5773
--- /dev/null
+++ b/usr/src/lib/libresolv2_joy/common/irs/gethostent_r.c
@@ -0,0 +1,274 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1998-1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <port_before.h>
+#if !defined(_REENTRANT) || !defined(DO_PTHREADS)
+ static int gethostent_r_not_required = 0;
+#else
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <sys/param.h>
+#include <port_after.h>
+
+#pragma redefine extname res_gethostbyname joy_res_gethostbyname
+#pragma redefine extname res_gethostbyaddr joy_res_gethostbyaddr
+
+#ifdef HOST_R_RETURN
+
+static HOST_R_RETURN
+copy_hostent(struct hostent *, struct hostent *, HOST_R_COPY_ARGS);
+
+HOST_R_RETURN
+gethostbyname_r(const char *name, struct hostent *hptr, HOST_R_ARGS) {
+ struct hostent *he = gethostbyname(name);
+#ifdef HOST_R_SETANSWER
+ int n = 0;
+#endif
+
+#ifdef HOST_R_ERRNO
+ HOST_R_ERRNO;
+#endif
+
+#ifdef HOST_R_SETANSWER
+ if (he == NULL || (n = copy_hostent(he, hptr, HOST_R_COPY)) != 0)
+ *answerp = NULL;
+ else
+ *answerp = hptr;
+
+ return (n);
+#else
+ if (he == NULL)
+ return (HOST_R_BAD);
+
+ return (copy_hostent(he, hptr, HOST_R_COPY));
+#endif
+}
+
+HOST_R_RETURN
+gethostbyaddr_r(const char *addr, int len, int type,
+ struct hostent *hptr, HOST_R_ARGS) {
+ struct hostent *he = gethostbyaddr(addr, len, type);
+#ifdef HOST_R_SETANSWER
+ int n = 0;
+#endif
+
+#ifdef HOST_R_ERRNO
+ HOST_R_ERRNO;
+#endif
+
+#ifdef HOST_R_SETANSWER
+ if (he == NULL || (n = copy_hostent(he, hptr, HOST_R_COPY)) != 0)
+ *answerp = NULL;
+ else
+ *answerp = hptr;
+
+ return (n);
+#else
+ if (he == NULL)
+ return (HOST_R_BAD);
+
+ return (copy_hostent(he, hptr, HOST_R_COPY));
+#endif
+}
+
+/*%
+ * These assume a single context is in operation per thread.
+ * If this is not the case we will need to call irs directly
+ * rather than through the base functions.
+ */
+
+HOST_R_RETURN
+gethostent_r(struct hostent *hptr, HOST_R_ARGS) {
+ struct hostent *he = gethostent();
+#ifdef HOST_R_SETANSWER
+ int n = 0;
+#endif
+
+#ifdef HOST_R_ERRNO
+ HOST_R_ERRNO;
+#endif
+
+#ifdef HOST_R_SETANSWER
+ if (he == NULL || (n = copy_hostent(he, hptr, HOST_R_COPY)) != 0)
+ *answerp = NULL;
+ else
+ *answerp = hptr;
+
+ return (n);
+#else
+ if (he == NULL)
+ return (HOST_R_BAD);
+
+ return (copy_hostent(he, hptr, HOST_R_COPY));
+#endif
+}
+
+HOST_R_SET_RETURN
+#ifdef HOST_R_ENT_ARGS
+sethostent_r(int stay_open, HOST_R_ENT_ARGS)
+#else
+sethostent_r(int stay_open)
+#endif
+{
+#ifdef HOST_R_ENT_ARGS
+ UNUSED(hdptr);
+#endif
+ sethostent(stay_open);
+#ifdef HOST_R_SET_RESULT
+ return (HOST_R_SET_RESULT);
+#endif
+}
+
+HOST_R_END_RETURN
+#ifdef HOST_R_ENT_ARGS
+endhostent_r(HOST_R_ENT_ARGS)
+#else
+endhostent_r(void)
+#endif
+{
+#ifdef HOST_R_ENT_ARGS
+ UNUSED(hdptr);
+#endif
+ endhostent();
+ HOST_R_END_RESULT(HOST_R_OK);
+}
+
+/* Private */
+
+#ifndef HOSTENT_DATA
+static HOST_R_RETURN
+copy_hostent(struct hostent *he, struct hostent *hptr, HOST_R_COPY_ARGS) {
+ char *cp;
+ char **ptr;
+ int i, n;
+ int nptr, len;
+
+ /* Find out the amount of space required to store the answer. */
+ nptr = 2; /*%< NULL ptrs */
+ len = (char *)ALIGN(buf) - buf;
+ for (i = 0; he->h_addr_list[i]; i++, nptr++) {
+ len += he->h_length;
+ }
+ for (i = 0; he->h_aliases[i]; i++, nptr++) {
+ len += strlen(he->h_aliases[i]) + 1;
+ }
+ len += strlen(he->h_name) + 1;
+ len += nptr * sizeof(char*);
+
+ if (len > buflen) {
+ errno = ERANGE;
+ return (HOST_R_BAD);
+ }
+
+ /* copy address size and type */
+ hptr->h_addrtype = he->h_addrtype;
+ n = hptr->h_length = he->h_length;
+
+ ptr = (char **)ALIGN(buf);
+ cp = (char *)ALIGN(buf) + nptr * sizeof(char *);
+
+ /* copy address list */
+ hptr->h_addr_list = ptr;
+ for (i = 0; he->h_addr_list[i]; i++ , ptr++) {
+ memcpy(cp, he->h_addr_list[i], n);
+ hptr->h_addr_list[i] = cp;
+ cp += n;
+ }
+ hptr->h_addr_list[i] = NULL;
+ ptr++;
+
+ /* copy official name */
+ n = strlen(he->h_name) + 1;
+ strcpy(cp, he->h_name);
+ hptr->h_name = cp;
+ cp += n;
+
+ /* copy aliases */
+ hptr->h_aliases = ptr;
+ for (i = 0 ; he->h_aliases[i]; i++) {
+ n = strlen(he->h_aliases[i]) + 1;
+ strcpy(cp, he->h_aliases[i]);
+ hptr->h_aliases[i] = cp;
+ cp += n;
+ }
+ hptr->h_aliases[i] = NULL;
+
+ return (HOST_R_OK);
+}
+#else /* !HOSTENT_DATA */
+static int
+copy_hostent(struct hostent *he, struct hostent *hptr, HOST_R_COPY_ARGS) {
+ char *cp, *eob;
+ int i, n;
+
+ /* copy address size and type */
+ hptr->h_addrtype = he->h_addrtype;
+ n = hptr->h_length = he->h_length;
+
+ /* copy up to first 35 addresses */
+ i = 0;
+ cp = hdptr->hostbuf;
+ eob = hdptr->hostbuf + sizeof(hdptr->hostbuf);
+ hptr->h_addr_list = hdptr->h_addr_ptrs;
+ while (he->h_addr_list[i] && i < (_MAXADDRS)) {
+ if (n < (eob - cp)) {
+ memcpy(cp, he->h_addr_list[i], n);
+ hptr->h_addr_list[i] = cp;
+ cp += n;
+ } else {
+ break;
+ }
+ i++;
+ }
+ hptr->h_addr_list[i] = NULL;
+
+ /* copy official name */
+ if ((n = strlen(he->h_name) + 1) < (eob - cp)) {
+ strcpy(cp, he->h_name);
+ hptr->h_name = cp;
+ cp += n;
+ } else {
+ return (-1);
+ }
+
+ /* copy aliases */
+ i = 0;
+ hptr->h_aliases = hdptr->host_aliases;
+ while (he->h_aliases[i] && i < (_MAXALIASES-1)) {
+ if ((n = strlen(he->h_aliases[i]) + 1) < (eob - cp)) {
+ strcpy(cp, he->h_aliases[i]);
+ hptr->h_aliases[i] = cp;
+ cp += n;
+ } else {
+ break;
+ }
+ i++;
+ }
+ hptr->h_aliases[i] = NULL;
+
+ return (HOST_R_OK);
+}
+#endif /* !HOSTENT_DATA */
+#else /* HOST_R_RETURN */
+ static int gethostent_r_unknown_system = 0;
+#endif /* HOST_R_RETURN */
+#endif /* !defined(_REENTRANT) || !defined(DO_PTHREADS) */
+/*! \file */
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