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);
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;
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);
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;
}
return retval;
}
+/* Encryption types supported by the kernel rpcsec_gss code */
+int num_krb5_enctypes = 0;
+krb5_enctype *krb5_enctypes = NULL;
+
+/*
+ * Parse the supported encryption type information
+ */
+static int
+parse_enctypes(char *enctypes)
+{
+ int n = 0;
+ char *curr, *comma;
+ int i;
+ static char *cached_types;
+
+ if (cached_types && strcmp(cached_types, enctypes) == 0)
+ return 0;
+ free(cached_types);
+
+ if (krb5_enctypes != NULL) {
+ free(krb5_enctypes);
+ krb5_enctypes = NULL;
+ num_krb5_enctypes = 0;
+ }
+
+ /* count the number of commas */
+ for (curr = enctypes; curr && *curr != '\0'; curr = ++comma) {
+ comma = strchr(curr, ',');
+ if (comma != NULL)
+ n++;
+ else
+ break;
+ }
+ /* If no more commas and we're not at the end, there's one more value */
+ if (*curr != '\0')
+ n++;
+
+ /* Empty string, return an error */
+ if (n == 0)
+ return ENOENT;
+
+ /* Allocate space for enctypes array */
+ if ((krb5_enctypes = (int *) calloc(n, sizeof(int))) == NULL) {
+ return ENOMEM;
+ }
+
+ /* Now parse each value into the array */
+ for (curr = enctypes, i = 0; curr && *curr != '\0'; curr = ++comma) {
+ krb5_enctypes[i++] = atoi(curr);
+ comma = strchr(curr, ',');
+ if (comma == NULL)
+ break;
+ }
+
+ num_krb5_enctypes = n;
+ if ((cached_types = malloc(strlen(enctypes)+1)))
+ strcpy(cached_types, enctypes);
+
+ return 0;
+}
+
static int
do_downcall(int k5_fd, uid_t uid, struct authgss_private_data *pd,
gss_buffer_desc *context_token)
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);
* Do this before creating rpc connection since we won't need
* rpc connection if it fails!
*/
- if (limit_krb5_enctypes(&sec, uid)) {
+ if (limit_krb5_enctypes(&sec)) {
printerr(1, "WARNING: Failed while limiting krb5 "
"encryption types for user with uid %d\n",
uid);
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;
}
if (sec.cred != GSS_C_NO_CREDENTIAL)
gss_release_cred(&min_stat, &sec.cred);
/* Restore euid to original value */
- if ((save_uid != -1) && (setfsuid(save_uid) != uid)) {
+ if (((int)save_uid != -1) && (setfsuid(save_uid) != (int)uid)) {
printerr(0, "WARNING: Failed to restore fsuid"
" to uid %d from %d\n", save_uid, uid);
}
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
gss_buffer_desc token;
char **credlist = NULL;
char **ccname;
- char **dirname;
+ char **dirname, *dir, *userdir;
int create_resp = -1;
int err, downcall_err = -EACCES;
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)
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)
{
uid_t uid;
- if (read(clp->krb5_fd, &uid, sizeof(uid)) < sizeof(uid)) {
+ if (read(clp->krb5_fd, &uid, sizeof(uid)) < (ssize_t)sizeof(uid)) {
printerr(0, "WARNING: failed reading uid from krb5 "
"upcall pipe: %s\n", strerror(errno));
return;
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)) < 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)
{
char *mech = NULL;
char *target = NULL;
char *service = NULL;
+ char *enctypes = NULL;
printerr(1, "handling gssd upcall (%s)\n", clp->dirname);
goto out;
}
+ /* read supported encryption types if supplied */
+ if ((p = strstr(lbuf, "enctypes=")) != NULL) {
+ enctypes = malloc(lbuflen);
+ if (!enctypes)
+ goto out;
+ if (sscanf(p, "enctypes=%s", enctypes) != 1) {
+ printerr(0, "WARNING: handle_gssd_upcall: "
+ "failed to parse encryption types "
+ "in upcall string '%s'\n", lbuf);
+ goto out;
+ }
+ if (parse_enctypes(enctypes) != 0) {
+ printerr(0, "WARNING: handle_gssd_upcall: "
+ "parsing encryption types failed: errno %d\n", errno);
+ }
+ }
+
/* read target name */
if ((p = strstr(lbuf, "target=")) != NULL) {
target = malloc(lbuflen);
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);
out:
free(lbuf);
free(mech);
+ free(enctypes);
free(target);
free(service);
return;
projects / nfs-utils.git / blobdiff