version 1.23, 2001/04/06 21:00:04 |
version 1.23.2.1, 2001/09/27 19:03:54 |
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extern ServerOptions options; |
extern ServerOptions options; |
const char *canonical_hostname; |
const char *canonical_hostname; |
HostStatus host_status; |
HostStatus host_status; |
Key *client_key, *found; |
Key *client_key; |
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debug("Trying rhosts with RSA host authentication for client user %.100s", client_user); |
debug("Trying rhosts with RSA host authentication for client user %.100s", client_user); |
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client_key = key_new(KEY_RSA1); |
client_key = key_new(KEY_RSA1); |
BN_copy(client_key->rsa->e, client_host_key->e); |
BN_copy(client_key->rsa->e, client_host_key->e); |
BN_copy(client_key->rsa->n, client_host_key->n); |
BN_copy(client_key->rsa->n, client_host_key->n); |
found = key_new(KEY_RSA1); |
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/* Check if we know the host and its host key. */ |
host_status = check_key_in_hostfiles(pw, client_key, canonical_hostname, |
host_status = check_host_in_hostfile(_PATH_SSH_SYSTEM_HOSTFILE, canonical_hostname, |
_PATH_SSH_SYSTEM_HOSTFILE, |
client_key, found, NULL); |
options.ignore_user_known_hosts ? NULL : _PATH_SSH_USER_HOSTFILE); |
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/* Check user host file unless ignored. */ |
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if (host_status != HOST_OK && !options.ignore_user_known_hosts) { |
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struct stat st; |
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char *user_hostfile = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid); |
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/* |
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* Check file permissions of _PATH_SSH_USER_HOSTFILE, auth_rsa() |
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* did already check pw->pw_dir, but there is a race XXX |
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*/ |
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if (options.strict_modes && |
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(stat(user_hostfile, &st) == 0) && |
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((st.st_uid != 0 && st.st_uid != pw->pw_uid) || |
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(st.st_mode & 022) != 0)) { |
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log("Rhosts RSA authentication refused for %.100s: bad owner or modes for %.200s", |
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pw->pw_name, user_hostfile); |
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} else { |
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/* XXX race between stat and the following open() */ |
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temporarily_use_uid(pw); |
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host_status = check_host_in_hostfile(user_hostfile, canonical_hostname, |
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client_key, found, NULL); |
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restore_uid(); |
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} |
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xfree(user_hostfile); |
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} |
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key_free(client_key); |
key_free(client_key); |
key_free(found); |
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if (host_status != HOST_OK) { |
if (host_status != HOST_OK) { |
debug("Rhosts with RSA host authentication denied: unknown or invalid host key"); |
debug("Rhosts with RSA host authentication denied: unknown or invalid host key"); |