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-rw-r--r--src/getpublickey.c170
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diff --git a/src/getpublickey.c b/src/getpublickey.c
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+/*
+ * Copyright (c) 2009, Sun Microsystems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - 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.
+ * - Neither the name of Sun Microsystems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+/*
+ * publickey.c
+ * Copyright (C) 1986, Sun Microsystems, Inc.
+ */
+
+/*
+ * Public key lookup routines
+ */
+#include <stdio.h>
+#include <pwd.h>
+#include <rpc/rpc.h>
+#include <rpc/key_prot.h>
+#ifdef YP
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#endif
+#include <string.h>
+#include <stdlib.h>
+
+#include "debug.h"
+
+#define PKFILE "/etc/publickey"
+
+/*
+ * Hack to let ypserv/rpc.nisd use AUTH_DES.
+ */
+int (*__getpublickey_LOCAL)() = 0;
+
+/*
+ * Get somebody's public key
+ */
+int
+__getpublickey_real(netname, publickey)
+ char *netname;
+ char *publickey;
+{
+ char lookup[3 * HEXKEYBYTES];
+ char *p;
+
+ if (publickey == NULL)
+ return (0);
+ if (!getpublicandprivatekey(netname, lookup))
+ return (0);
+ p = strchr(lookup, ':');
+ if (p == NULL) {
+ return (0);
+ }
+ *p = '\0';
+ memcpy(publickey, lookup, HEXKEYBYTES);
+ publickey[HEXKEYBYTES] = '\0';
+ return (1);
+}
+
+/*
+ * reads the file /etc/publickey looking for a + to optionally go to the
+ * yellow pages
+ */
+
+int
+getpublicandprivatekey(key, ret)
+ char *key;
+ char *ret;
+{
+ char buf[1024]; /* big enough */
+ char *res;
+ FILE *fd;
+ char *mkey;
+ char *mval;
+
+ fd = fopen(PKFILE, "r");
+ if (fd == NULL)
+ return (0);
+ for (;;) {
+ res = fgets(buf, sizeof(buf), fd);
+ if (res == NULL) {
+ fclose(fd);
+ return (0);
+ }
+ if (res[0] == '#')
+ continue;
+ else if (res[0] == '+') {
+#ifdef YP
+ char *PKMAP = "publickey.byname";
+ char *lookup;
+ char *domain;
+ int err;
+ int len;
+
+ err = yp_get_default_domain(&domain);
+ if (err) {
+ continue;
+ }
+ lookup = NULL;
+ err = yp_match(domain, PKMAP, key, strlen(key), &lookup, &len);
+ if (err) {
+ LIBTIRPC_DEBUG(1,
+ ("getpublicandprivatekey: match failed error %d\n", err));
+ continue;
+ }
+ lookup[len] = 0;
+ strcpy(ret, lookup);
+ fclose(fd);
+ free(lookup);
+ return (2);
+#else /* YP */
+ LIBTIRPC_DEBUG(1,
+("Bad record in %s '+' -- NIS not supported in this library copy\n", PKFILE));
+ continue;
+#endif /* YP */
+ } else {
+ mkey = strsep(&res, "\t ");
+ if (mkey == NULL) {
+ fprintf(stderr,
+ "Bad record in %s -- %s", PKFILE, buf);
+ continue;
+ }
+ do {
+ mval = strsep(&res, " \t#\n");
+ } while (mval != NULL && !*mval);
+ if (mval == NULL) {
+ fprintf(stderr,
+ "Bad record in %s val problem - %s", PKFILE, buf);
+ continue;
+ }
+ if (strcmp(mkey, key) == 0) {
+ strcpy(ret, mval);
+ fclose(fd);
+ return (1);
+ }
+ }
+ }
+}
+
+int getpublickey(netname, publickey)
+ const char *netname;
+ char *publickey;
+{
+ if (__getpublickey_LOCAL != NULL)
+ return(__getpublickey_LOCAL(netname, publickey));
+ else
+ return(__getpublickey_real(netname, publickey));
+}