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Diffstat (limited to 'usr/src/lib/libresolv2_joy/common/irs/dns_sv.c')
-rw-r--r--usr/src/lib/libresolv2_joy/common/irs/dns_sv.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/usr/src/lib/libresolv2_joy/common/irs/dns_sv.c b/usr/src/lib/libresolv2_joy/common/irs/dns_sv.c
new file mode 100644
index 0000000000..720c230595
--- /dev/null
+++ b/usr/src/lib/libresolv2_joy/common/irs/dns_sv.c
@@ -0,0 +1,296 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 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.
+ */
+
+/* Imports */
+
+#include "port_before.h"
+
+#include <sys/types.h>
+#include <netinet/in.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv_joy.h>
+
+#include <isc/memcluster.h>
+#include <irs.h>
+
+#include "port_after.h"
+
+#include "irs_p.h"
+#include "hesiod.h"
+#include "dns_p.h"
+
+/* Definitions */
+
+struct pvt {
+ struct dns_p * dns;
+ struct servent serv;
+ char * svbuf;
+ struct __res_state * res;
+ void (*free_res)(void *);
+};
+
+/* Forward. */
+
+static void sv_close(struct irs_sv *);
+static struct servent * sv_byname(struct irs_sv *,
+ const char *, const char *);
+static struct servent * sv_byport(struct irs_sv *, int, const char *);
+static struct servent * sv_next(struct irs_sv *);
+static void sv_rewind(struct irs_sv *);
+static void sv_minimize(struct irs_sv *);
+#ifdef SV_RES_SETGET
+static struct __res_state * sv_res_get(struct irs_sv *);
+static void sv_res_set(struct irs_sv *,
+ struct __res_state *,
+ void (*)(void *));
+#endif
+
+static struct servent * parse_hes_list(struct irs_sv *,
+ char **, const char *);
+
+/* Public */
+
+struct irs_sv *
+irs_dns_sv(struct irs_acc *this) {
+ struct dns_p *dns = (struct dns_p *)this->private;
+ struct irs_sv *sv;
+ struct pvt *pvt;
+
+ if (!dns || !dns->hes_ctx) {
+ errno = ENODEV;
+ return (NULL);
+ }
+ if (!(pvt = memget(sizeof *pvt))) {
+ errno = ENOMEM;
+ return (NULL);
+ }
+ memset(pvt, 0, sizeof *pvt);
+ pvt->dns = dns;
+ if (!(sv = memget(sizeof *sv))) {
+ memput(pvt, sizeof *pvt);
+ errno = ENOMEM;
+ return (NULL);
+ }
+ memset(sv, 0x5e, sizeof *sv);
+ sv->private = pvt;
+ sv->byname = sv_byname;
+ sv->byport = sv_byport;
+ sv->next = sv_next;
+ sv->rewind = sv_rewind;
+ sv->close = sv_close;
+ sv->minimize = sv_minimize;
+#ifdef SV_RES_SETGET
+ sv->res_get = sv_res_get;
+ sv->res_set = sv_res_set;
+#else
+ sv->res_get = NULL; /*%< sv_res_get; */
+ sv->res_set = NULL; /*%< sv_res_set; */
+#endif
+ return (sv);
+}
+
+/* Methods */
+
+static void
+sv_close(struct irs_sv *this) {
+ struct pvt *pvt = (struct pvt *)this->private;
+
+ if (pvt->serv.s_aliases)
+ free(pvt->serv.s_aliases);
+ if (pvt->svbuf)
+ free(pvt->svbuf);
+
+ if (pvt->res && pvt->free_res)
+ (*pvt->free_res)(pvt->res);
+ memput(pvt, sizeof *pvt);
+ memput(this, sizeof *this);
+}
+
+static struct servent *
+sv_byname(struct irs_sv *this, const char *name, const char *proto) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct dns_p *dns = pvt->dns;
+ struct servent *s;
+ char **hes_list;
+
+ if (!(hes_list = hesiod_resolve(dns->hes_ctx, name, "service")))
+ return (NULL);
+
+ s = parse_hes_list(this, hes_list, proto);
+ hesiod_free_list(dns->hes_ctx, hes_list);
+ return (s);
+}
+
+static struct servent *
+sv_byport(struct irs_sv *this, int port, const char *proto) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct dns_p *dns = pvt->dns;
+ struct servent *s;
+ char portstr[16];
+ char **hes_list;
+
+ sprintf(portstr, "%d", ntohs(port));
+ if (!(hes_list = hesiod_resolve(dns->hes_ctx, portstr, "port")))
+ return (NULL);
+
+ s = parse_hes_list(this, hes_list, proto);
+ hesiod_free_list(dns->hes_ctx, hes_list);
+ return (s);
+}
+
+static struct servent *
+sv_next(struct irs_sv *this) {
+ UNUSED(this);
+ errno = ENODEV;
+ return (NULL);
+}
+
+static void
+sv_rewind(struct irs_sv *this) {
+ UNUSED(this);
+ /* NOOP */
+}
+
+/* Private */
+
+static struct servent *
+parse_hes_list(struct irs_sv *this, char **hes_list, const char *proto) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ char *p, *cp, **cpp, **new;
+ int proto_len;
+ int num = 0;
+ int max = 0;
+
+ for (cpp = hes_list; *cpp; cpp++) {
+ cp = *cpp;
+
+ /* Strip away comments, if any. */
+ if ((p = strchr(cp, '#')))
+ *p = 0;
+
+ /* Check to make sure the protocol matches. */
+ p = cp;
+ while (*p && !isspace((unsigned char)*p))
+ p++;
+ if (!*p)
+ continue;
+ if (proto) {
+ proto_len = strlen(proto);
+ if (strncasecmp(++p, proto, proto_len) != 0)
+ continue;
+ if (p[proto_len] && !isspace(p[proto_len]&0xff))
+ continue;
+ }
+ /* OK, we've got a live one. Let's parse it for real. */
+ if (pvt->svbuf)
+ free(pvt->svbuf);
+ pvt->svbuf = strdup(cp);
+
+ p = pvt->svbuf;
+ pvt->serv.s_name = p;
+ while (*p && !isspace(*p&0xff))
+ p++;
+ if (!*p)
+ continue;
+ *p++ = '\0';
+
+ pvt->serv.s_proto = p;
+ while (*p && !isspace(*p&0xff))
+ p++;
+ if (!*p)
+ continue;
+ *p++ = '\0';
+
+ pvt->serv.s_port = htons((u_short) atoi(p));
+ while (*p && !isspace(*p&0xff))
+ p++;
+ if (*p)
+ *p++ = '\0';
+
+ while (*p) {
+ if ((num + 1) >= max || !pvt->serv.s_aliases) {
+ max += 10;
+ new = realloc(pvt->serv.s_aliases,
+ max * sizeof(char *));
+ if (!new) {
+ errno = ENOMEM;
+ goto cleanup;
+ }
+ pvt->serv.s_aliases = new;
+ }
+ pvt->serv.s_aliases[num++] = p;
+ while (*p && !isspace(*p&0xff))
+ p++;
+ if (*p)
+ *p++ = '\0';
+ }
+ if (!pvt->serv.s_aliases)
+ pvt->serv.s_aliases = malloc(sizeof(char *));
+ if (!pvt->serv.s_aliases)
+ goto cleanup;
+ pvt->serv.s_aliases[num] = NULL;
+ return (&pvt->serv);
+ }
+
+ cleanup:
+ if (pvt->serv.s_aliases) {
+ free(pvt->serv.s_aliases);
+ pvt->serv.s_aliases = NULL;
+ }
+ if (pvt->svbuf) {
+ free(pvt->svbuf);
+ pvt->svbuf = NULL;
+ }
+ return (NULL);
+}
+
+static void
+sv_minimize(struct irs_sv *this) {
+ UNUSED(this);
+ /* NOOP */
+}
+
+#ifdef SV_RES_SETGET
+static struct __res_state *
+sv_res_get(struct irs_sv *this) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct dns_p *dns = pvt->dns;
+
+ return (__hesiod_res_get(dns->hes_ctx));
+}
+
+static void
+sv_res_set(struct irs_sv *this, struct __res_state * res,
+ void (*free_res)(void *)) {
+ struct pvt *pvt = (struct pvt *)this->private;
+ struct dns_p *dns = pvt->dns;
+
+ __hesiod_res_set(dns->hes_ctx, res, free_res);
+}
+#endif
+
+/*! \file */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-10 09:39:29 +0000