2 * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 extern ServerOptions options;
40 #include <globus_gss_assist.h>
42 static int ssh_gssapi_gsi_userok(ssh_gssapi_client *client, char *name);
43 static int ssh_gssapi_gsi_localname(ssh_gssapi_client *client, char **user);
44 static void ssh_gssapi_gsi_storecreds(ssh_gssapi_client *client);
46 ssh_gssapi_mech gssapi_gsi_mech = {
47 "dZuIebMjgUqaxvbF7hDbAw==",
49 {9, "\x2B\x06\x01\x04\x01\x9B\x50\x01\x01"},
51 &ssh_gssapi_gsi_userok,
52 &ssh_gssapi_gsi_localname,
53 &ssh_gssapi_gsi_storecreds
57 * Check if this user is OK to login under GSI. User has been authenticated
58 * as identity in global 'client_name.value' and is trying to log in as passed
61 * Returns non-zero if user is authorized, 0 otherwise.
64 ssh_gssapi_gsi_userok(ssh_gssapi_client *client, char *name)
68 #ifdef GLOBUS_GSI_GSS_ASSIST_MODULE
69 if (globus_module_activate(GLOBUS_GSI_GSS_ASSIST_MODULE) != 0) {
74 /* This returns 0 on success */
75 authorized = (globus_gss_assist_userok(client->displayname.value,
78 logit("GSI user %s is%s authorized as target user %s",
79 (char *) client->displayname.value, (authorized ? "" : " not"), name);
85 * Return the local username associated with the GSI credentials.
88 ssh_gssapi_gsi_localname(ssh_gssapi_client *client, char **user)
90 #ifdef GLOBUS_GSI_GSS_ASSIST_MODULE
91 if (globus_module_activate(GLOBUS_GSI_GSS_ASSIST_MODULE) != 0) {
95 return(globus_gss_assist_gridmap(client->displayname.value, user) == 0);
99 * Export GSI credentials to disk.
102 ssh_gssapi_gsi_storecreds(ssh_gssapi_client *client)
104 OM_uint32 major_status;
105 OM_uint32 minor_status;
106 gss_buffer_desc export_cred = GSS_C_EMPTY_BUFFER;
109 if (!client || !client->creds) {
113 major_status = gss_export_cred(&minor_status,
118 if (GSS_ERROR(major_status) && major_status != GSS_S_UNAVAILABLE) {
120 ssh_gssapi_build_ctx(&ctx);
121 ctx->major = major_status;
122 ctx->minor = minor_status;
123 ssh_gssapi_set_oid(ctx, &gssapi_gsi_mech.oid);
124 ssh_gssapi_error(ctx);
125 ssh_gssapi_delete_ctx(&ctx);
129 p = strchr((char *) export_cred.value, '=');
131 logit("Failed to parse exported credentials string '%.100s'",
132 (char *)export_cred.value);
133 gss_release_buffer(&minor_status, &export_cred);
137 if (strcmp((char *)export_cred.value,"X509_USER_DELEG_PROXY") == 0) {
138 client->store.envvar = strdup("X509_USER_PROXY");
140 client->store.envvar = strdup((char *)export_cred.value);
142 client->store.envval = strdup(p);
145 do_pam_putenv(client->store.envvar, client->store.envval);
147 if (strncmp(p, "FILE:", 5) == 0) {
150 if (access(p, R_OK) == 0) {
151 client->store.filename = strdup(p);
153 gss_release_buffer(&minor_status, &export_cred);