* called by a name other than "ssh" or "Secure Shell".
*
*
- * Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
+ * Copyright (c) 1999, 2000 Markus Friedl. All rights reserved.
* Copyright (c) 1999 Niels Provos. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
#include "includes.h"
-RCSID("$OpenBSD: hostfile.c,v 1.24 2001/01/21 19:05:49 markus Exp $");
+RCSID("$OpenBSD: hostfile.c,v 1.30 2002/07/24 16:11:18 markus Exp $");
#include "packet.h"
#include "match.h"
return 1;
}
-int
-auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n)
-{
- Key *k = key_new(KEY_RSA1);
- int ret = hostfile_read_key(cpp, bitsp, k);
- BN_copy(e, k->rsa->e);
- BN_copy(n, k->rsa->n);
- key_free(k);
- return ret;
-}
-
-int
+static int
hostfile_check_key(int bits, Key *key, const char *host, const char *filename, int linenum)
{
if (key == NULL || key->type != KEY_RSA1 || key->rsa == NULL)
* in the list of our known hosts. Returns HOST_OK if the host is known and
* has the specified key, HOST_NEW if the host is not known, and HOST_CHANGED
* if the host is known but used to have a different host key.
+ *
+ * If no 'key' has been specified and a key of type 'keytype' is known
+ * for the specified host, then HOST_FOUND is returned.
*/
-HostStatus
-check_host_in_hostfile(const char *filename, const char *host, Key *key,
- Key *found, int *numret)
+static HostStatus
+check_host_in_hostfile_by_key_or_type(const char *filename,
+ const char *host, Key *key, int keytype, Key *found, int *numret)
{
FILE *f;
char line[8192];
int linenum = 0;
- u_int kbits, hostlen;
+ u_int kbits;
char *cp, *cp2;
HostStatus end_return;
- if (key == NULL)
- fatal("no key to look up");
+ debug3("check_host_in_hostfile: filename %s", filename);
+
/* Open the file containing the list of known hosts. */
f = fopen(filename, "r");
if (!f)
return HOST_NEW;
- /* Cache the length of the host name. */
- hostlen = strlen(host);
-
/*
* Return value when the loop terminates. This is set to
* HOST_CHANGED if we have seen a different key for the host and have
*/
end_return = HOST_NEW;
- /* Go trough the file. */
+ /* Go through the file. */
while (fgets(line, sizeof(line), f)) {
cp = line;
linenum++;
*/
if (!hostfile_read_key(&cp, &kbits, found))
continue;
- if (!hostfile_check_key(kbits, found, host, filename, linenum))
- continue;
if (numret != NULL)
*numret = linenum;
+ if (key == NULL) {
+ /* we found a key of the requested type */
+ if (found->type == keytype)
+ return HOST_FOUND;
+ continue;
+ }
+
+ if (!hostfile_check_key(kbits, found, host, filename, linenum))
+ continue;
+
/* Check if the current key is the same as the given key. */
if (key_equal(key, found)) {
/* Ok, they match. */
+ debug3("check_host_in_hostfile: match line %d", linenum);
fclose(f);
return HOST_OK;
}
return end_return;
}
+HostStatus
+check_host_in_hostfile(const char *filename, const char *host, Key *key,
+ Key *found, int *numret)
+{
+ if (key == NULL)
+ fatal("no key to look up");
+ return (check_host_in_hostfile_by_key_or_type(filename, host, key, 0,
+ found, numret));
+}
+
+int
+lookup_key_in_hostfile_by_type(const char *filename, const char *host,
+ int keytype, Key *found, int *numret)
+{
+ return (check_host_in_hostfile_by_key_or_type(filename, host, NULL,
+ keytype, found, numret) == HOST_FOUND);
+}
+
/*
* Appends an entry to the host file. Returns false if the entry could not
* be appended.