]> git.decadent.org.uk Git - nfs-utils.git/blobdiff - utils/gssd/gssd_proc.c
gssd: Look for user creds in user defined directory
[nfs-utils.git] / utils / gssd / gssd_proc.c
index c301d467d26c88e039570153deb7137bdf979aba..aa394359e27398fd3dfe25462ca2be177b7088d4 100644 (file)
@@ -299,15 +299,11 @@ destroy_client(struct clnt_info *clp)
        if (clp->krb5_poll_index != -1)
                memset(&pollarray[clp->krb5_poll_index], 0,
                                        sizeof(struct pollfd));
-       if (clp->spkm3_poll_index != -1)
-               memset(&pollarray[clp->spkm3_poll_index], 0,
-                                       sizeof(struct pollfd));
        if (clp->gssd_poll_index != -1)
                memset(&pollarray[clp->gssd_poll_index], 0,
                                        sizeof(struct pollfd));
        if (clp->dir_fd != -1) close(clp->dir_fd);
        if (clp->krb5_fd != -1) close(clp->krb5_fd);
-       if (clp->spkm3_fd != -1) close(clp->spkm3_fd);
        if (clp->gssd_fd != -1) close(clp->gssd_fd);
        free(clp->dirname);
        free(clp->servicename);
@@ -327,10 +323,8 @@ insert_new_clnt(void)
                goto out;
        }
        clp->krb5_poll_index = -1;
-       clp->spkm3_poll_index = -1;
        clp->gssd_poll_index = -1;
        clp->krb5_fd = -1;
-       clp->spkm3_fd = -1;
        clp->gssd_fd = -1;
        clp->dir_fd = -1;
 
@@ -355,30 +349,22 @@ process_clnt_dir_files(struct clnt_info * clp)
                        snprintf(name, sizeof(name), "%s/krb5", clp->dirname);
                        clp->krb5_fd = open(name, O_RDWR);
                }
-               if (clp->spkm3_fd == -1) {
-                       snprintf(name, sizeof(name), "%s/spkm3", clp->dirname);
-                       clp->spkm3_fd = open(name, O_RDWR);
-               }
 
                /* If we opened a gss-specific pipe, let's try opening
                 * the new upcall pipe again. If we succeed, close
                 * gss-specific pipe(s).
                 */
-               if (clp->krb5_fd != -1 || clp->spkm3_fd != -1) {
+               if (clp->krb5_fd != -1) {
                        clp->gssd_fd = open(gname, O_RDWR);
                        if (clp->gssd_fd != -1) {
                                if (clp->krb5_fd != -1)
                                        close(clp->krb5_fd);
                                clp->krb5_fd = -1;
-                               if (clp->spkm3_fd != -1)
-                                       close(clp->spkm3_fd);
-                               clp->spkm3_fd = -1;
                        }
                }
        }
 
-       if ((clp->krb5_fd == -1) && (clp->spkm3_fd == -1) &&
-                       (clp->gssd_fd == -1))
+       if ((clp->krb5_fd == -1) && (clp->gssd_fd == -1))
                return -1;
        snprintf(info_file_name, sizeof(info_file_name), "%s/info",
                        clp->dirname);
@@ -431,15 +417,6 @@ insert_clnt_poll(struct clnt_info *clp)
                pollarray[clp->krb5_poll_index].events |= POLLIN;
        }
 
-       if ((clp->spkm3_fd != -1) && (clp->spkm3_poll_index == -1)) {
-               if (get_poll_index(&clp->spkm3_poll_index)) {
-                       printerr(0, "ERROR: Too many spkm3 clients\n");
-                       return -1;
-               }
-               pollarray[clp->spkm3_poll_index].fd = clp->spkm3_fd;
-               pollarray[clp->spkm3_poll_index].events |= POLLIN;
-       }
-
        return 0;
 }
 
@@ -839,13 +816,6 @@ int create_auth_rpc_client(struct clnt_info *clp,
                sec.mech = (gss_OID)&krb5oid;
                sec.req_flags = GSS_C_MUTUAL_FLAG;
        }
-       else if (authtype == AUTHTYPE_SPKM3) {
-               sec.mech = (gss_OID)&spkm3oid;
-               /* XXX sec.req_flags = GSS_C_ANON_FLAG;
-                * Need a way to switch....
-                */
-               sec.req_flags = GSS_C_MUTUAL_FLAG;
-       }
        else {
                printerr(0, "ERROR: Invalid authentication type (%d) "
                        "in create_auth_rpc_client\n", authtype);
@@ -919,9 +889,8 @@ int create_auth_rpc_client(struct clnt_info *clp,
        auth = authgss_create_default(rpc_clnt, clp->servicename, &sec);
        if (!auth) {
                /* Our caller should print appropriate message */
-               printerr(2, "WARNING: Failed to create %s context for "
+               printerr(2, "WARNING: Failed to create krb5 context for "
                            "user with uid %d for server %s\n",
-                       (authtype == AUTHTYPE_KRB5 ? "krb5":"spkm3"),
                         uid, clp->servername);
                goto out_fail;
        }
@@ -949,6 +918,23 @@ int create_auth_rpc_client(struct clnt_info *clp,
        goto out;
 }
 
+static char *
+user_cachedir(char *dirname, uid_t uid)
+{
+       struct passwd *pw;
+       char *ptr;
+
+       if ((pw = getpwuid(uid)) == NULL) {
+               printerr(0, "user_cachedir: Failed to find '%d' uid"
+                           " for cache directory\n");
+               return NULL;
+       }
+       ptr = malloc(strlen(dirname)+strlen(pw->pw_name)+2);
+       if (ptr)
+               sprintf(ptr, "%s/%s", dirname, pw->pw_name);
+
+       return ptr;
+}
 /*
  * this code uses the userland rpcsec gss library to create a krb5
  * context on behalf of the kernel
@@ -963,7 +949,7 @@ process_krb5_upcall(struct clnt_info *clp, uid_t uid, int fd, char *tgtname,
        gss_buffer_desc         token;
        char                    **credlist = NULL;
        char                    **ccname;
-       char                    **dirname;
+       char                    **dirname, *dir, *userdir;
        int                     create_resp = -1;
        int                     err, downcall_err = -EACCES;
 
@@ -1006,7 +992,22 @@ process_krb5_upcall(struct clnt_info *clp, uid_t uid, int fd, char *tgtname,
                                service == NULL)) {
                /* Tell krb5 gss which credentials cache to use */
                for (dirname = ccachesearch; *dirname != NULL; dirname++) {
-                       err = gssd_setup_krb5_user_gss_ccache(uid, clp->servername, *dirname);
+                       /* See if the user name is needed */
+                       if (strncmp(*dirname, GSSD_USER_CRED_DIR, 
+                                       strlen(GSSD_USER_CRED_DIR)) == 0) {
+                               userdir = user_cachedir(*dirname, uid);
+                               if (userdir == NULL) 
+                                       continue;
+                               dir = userdir;
+                       } else
+                               dir = *dirname;
+
+                       err = gssd_setup_krb5_user_gss_ccache(uid, clp->servername, dir);
+
+                       if (userdir) {
+                               free(userdir);
+                               userdir = NULL;
+                       }
                        if (err == -EKEYEXPIRED)
                                downcall_err = -EKEYEXPIRED;
                        else if (!err)
@@ -1103,59 +1104,6 @@ out_return_error:
        goto out;
 }
 
-/*
- * this code uses the userland rpcsec gss library to create an spkm3
- * context on behalf of the kernel
- */
-static void
-process_spkm3_upcall(struct clnt_info *clp, uid_t uid, int fd)
-{
-       CLIENT                  *rpc_clnt = NULL;
-       AUTH                    *auth = NULL;
-       struct authgss_private_data pd;
-       gss_buffer_desc         token;
-
-       printerr(2, "handling spkm3 upcall (%s)\n", clp->dirname);
-
-       token.length = 0;
-       token.value = NULL;
-
-       if (create_auth_rpc_client(clp, &rpc_clnt, &auth, uid, AUTHTYPE_SPKM3)) {
-               printerr(0, "WARNING: Failed to create spkm3 context for "
-                           "user with uid %d\n", uid);
-               goto out_return_error;
-       }
-
-       if (!authgss_get_private_data(auth, &pd)) {
-               printerr(0, "WARNING: Failed to obtain authentication "
-                           "data for user with uid %d for server %s\n",
-                        uid, clp->servername);
-               goto out_return_error;
-       }
-
-       if (serialize_context_for_kernel(pd.pd_ctx, &token, &spkm3oid, NULL)) {
-               printerr(0, "WARNING: Failed to serialize spkm3 context for "
-                           "user with uid %d for server\n",
-                        uid, clp->servername);
-               goto out_return_error;
-       }
-
-       do_downcall(fd, uid, &pd, &token);
-
-out:
-       if (token.value)
-               free(token.value);
-       if (auth)
-               AUTH_DESTROY(auth);
-       if (rpc_clnt)
-               clnt_destroy(rpc_clnt);
-       return;
-
-out_return_error:
-       do_error_downcall(fd, uid, -1);
-       goto out;
-}
-
 void
 handle_krb5_upcall(struct clnt_info *clp)
 {
@@ -1170,20 +1118,6 @@ handle_krb5_upcall(struct clnt_info *clp)
        return process_krb5_upcall(clp, uid, clp->krb5_fd, NULL, NULL);
 }
 
-void
-handle_spkm3_upcall(struct clnt_info *clp)
-{
-       uid_t                   uid;
-
-       if (read(clp->spkm3_fd, &uid, sizeof(uid)) < (ssize_t)sizeof(uid)) {
-               printerr(0, "WARNING: failed reading uid from spkm3 "
-                        "upcall pipe: %s\n", strerror(errno));
-               return;
-       }
-
-       return process_spkm3_upcall(clp, uid, clp->spkm3_fd);
-}
-
 void
 handle_gssd_upcall(struct clnt_info *clp)
 {
@@ -1245,7 +1179,7 @@ handle_gssd_upcall(struct clnt_info *clp)
                        goto out;
                if (sscanf(p, "enctypes=%s", enctypes) != 1) {
                        printerr(0, "WARNING: handle_gssd_upcall: "
-                                   "failed to parse target name "
+                                   "failed to parse encryption types "
                                    "in upcall string '%s'\n", lbuf);
                        goto out;
                }
@@ -1292,8 +1226,6 @@ handle_gssd_upcall(struct clnt_info *clp)
 
        if (strcmp(mech, "krb5") == 0)
                process_krb5_upcall(clp, uid, clp->gssd_fd, target, service);
-       else if (strcmp(mech, "spkm3") == 0)
-               process_spkm3_upcall(clp, uid, clp->gssd_fd);
        else
                printerr(0, "WARNING: handle_gssd_upcall: "
                            "received unknown gss mech '%s'\n", mech);