#include <sys/stat.h>
#include <sys/socket.h>
#include <arpa/inet.h>
+#include <sys/fsuid.h>
#include <stdio.h>
#include <stdlib.h>
* with an index into pollarray[], and other basic data about that client.
*
* Directory structure: created by the kernel nfs client
- * /pipefsdir/clntXX : one per rpc_clnt struct in the kernel
- * /pipefsdir/clntXX/krb5 : read uid for which kernel wants
- * a context, write the resulting context
- * /pipefsdir/clntXX/info : stores info such as server name
+ * {pipefs_nfsdir}/clntXX : one per rpc_clnt struct in the kernel
+ * {pipefs_nfsdir}/clntXX/krb5 : read uid for which kernel wants
+ * a context, write the resulting context
+ * {pipefs_nfsdir}/clntXX/info : stores info such as server name
*
* Algorithm:
- * Poll all /pipefsdir/clntXX/krb5 files. When ready, data read
+ * Poll all {pipefs_nfsdir}/clntXX/krb5 files. When ready, data read
* is a uid; performs rpcsec_gss context initialization protocol to
* get a cred for that user. Writes result to corresponding krb5 file
* in a form the kernel code will understand.
* In addition, we make sure we are notified whenever anything is
- * created or destroyed in pipefsdir/ or in an of the clntXX directories,
- * and rescan the whole pipefsdir when this happens.
+ * created or destroyed in {pipefs_nfsdir} or in an of the clntXX directories,
+ * and rescan the whole {pipefs_nfsdir} when this happens.
*/
struct pollfd * pollarray;
/* XXX buffer problems: */
static int
read_service_info(char *info_file_name, char **servicename, char **servername,
- int *prog, int *vers, char **protocol) {
+ int *prog, int *vers, char **protocol, int *port) {
#define INFOBUFLEN 256
char buf[INFOBUFLEN];
static char dummy[128];
char program[16];
char version[16];
char protoname[16];
+ char cb_port[128];
+ char *p;
in_addr_t inaddr;
int fd = -1;
struct hostent *ent = NULL;
goto fail;
}
+ cb_port[0] = '\0';
+ if ((p = strstr(buf, "port")) != NULL)
+ sscanf(p, "port: %127s\n", cb_port);
+
/* check service, program, and version */
if(memcmp(service, "nfs", 3)) return -1;
*prog = atoi(program + 1); /* skip open paren */
if (!(*servicename = calloc(strlen(buf) + 1, 1)))
goto fail;
memcpy(*servicename, buf, strlen(buf));
+ if (cb_port[0] != '\0')
+ *port = atoi(cb_port);
if (!(*protocol = strdup(protoname)))
goto fail;
if ((clp->servicename == NULL) &&
read_service_info(info_file_name, &clp->servicename,
&clp->servername, &clp->prog, &clp->vers,
- &clp->protocol))
+ &clp->protocol, &clp->port))
return -1;
return 0;
}
struct dirent **namelist;
int i, j;
- if (chdir(pipefsdir) < 0) {
+ if (chdir(pipefs_nfsdir) < 0) {
printerr(0, "ERROR: can't chdir to %s: %s\n",
- pipefsdir, strerror(errno));
+ pipefs_nfsdir, strerror(errno));
return -1;
}
- j = scandir(pipefsdir, &namelist, NULL, alphasort);
+ j = scandir(pipefs_nfsdir, &namelist, NULL, alphasort);
if (j < 0) {
printerr(0, "ERROR: can't scandir %s: %s\n",
- pipefsdir, strerror(errno));
+ pipefs_nfsdir, strerror(errno));
return -1;
}
update_old_clients(namelist, j);
gss_buffer_desc *context_token)
{
char *buf = NULL, *p = NULL, *end = NULL;
- unsigned int timeout = 0; /* XXX decide on a reasonable value */
+ unsigned int timeout = context_timeout;
unsigned int buf_size = 0;
printerr(1, "doing downcall\n");
end = buf + buf_size;
if (WRITE_BYTES(&p, end, uid)) goto out_err;
- /* Not setting any timeout for now: */
if (WRITE_BYTES(&p, end, timeout)) goto out_err;
if (WRITE_BYTES(&p, end, pd->pd_seq_win)) goto out_err;
if (write_buffer(&p, end, &pd->pd_ctx_hndl)) goto out_err;
return 0;
out_err:
if (buf) free(buf);
- printerr(0, "Failed to write downcall!\n");
+ printerr(1, "Failed to write downcall!\n");
return -1;
}
if (write(k5_fd, buf, p - buf) < p - buf) goto out_err;
return 0;
out_err:
- printerr(0, "Failed to write error downcall!\n");
+ printerr(1, "Failed to write error downcall!\n");
return -1;
}
ai_hints.ai_protocol = IPPROTO_UDP;
} else {
printerr(0, "WARNING: unrecognized protocol, '%s', requested "
- "for connection to server %s for user with uid %d",
+ "for connection to server %s for user with uid %d\n",
clp->protocol, clp->servername, uid);
goto out_fail;
}
/* extract the service name from clp->servicename */
if ((at_sign = strchr(clp->servicename, '@')) == NULL) {
printerr(0, "WARNING: servicename (%s) not formatted as "
- "expected with service@host", clp->servicename);
+ "expected with service@host\n", clp->servicename);
goto out_fail;
}
if ((at_sign - clp->servicename) >= sizeof(service)) {
printerr(0, "WARNING: service portion of servicename (%s) "
- "is too long!", clp->servicename);
+ "is too long!\n", clp->servicename);
goto out_fail;
}
strncpy(service, clp->servicename, at_sign - clp->servicename);
errcode = getaddrinfo(clp->servername, service, &ai_hints, &a);
if (errcode) {
printerr(0, "WARNING: Error from getaddrinfo for server "
- "'%s': %s", clp->servername, gai_strerror(errcode));
+ "'%s': %s\n", clp->servername, gai_strerror(errcode));
goto out_fail;
}
if (a == NULL) {
printerr(0, "WARNING: No address information found for "
- "connection to server %s for user with uid %d",
+ "connection to server %s for user with uid %d\n",
clp->servername, uid);
goto out_fail;
}
+ if (clp->port)
+ ((struct sockaddr_in *)a->ai_addr)->sin_port = htons(clp->port);
if (a->ai_protocol == IPPROTO_TCP) {
if ((rpc_clnt = clnttcp_create(
(struct sockaddr_in *) a->ai_addr,
} else {
/* Shouldn't happen! */
printerr(0, "ERROR: requested protocol '%s', but "
- "got addrinfo with protocol %d",
+ "got addrinfo with protocol %d\n",
clp->protocol, a->ai_protocol);
goto out_fail;
}
gss_buffer_desc token;
char **credlist = NULL;
char **ccname;
+ char **dirname;
+ int create_resp = -1;
printerr(1, "handling krb5 upcall\n");
goto out;
}
- if (uid == 0) {
- int success = 0;
-
- /*
- * Get a list of credential cache names and try each
- * of them until one works or we've tried them all
- */
- if (gssd_get_krb5_machine_cred_list(&credlist)) {
- printerr(0, "WARNING: Failed to obtain machine "
- "credentials for connection to "
- "server %s\n", clp->servername);
- goto out_return_error;
- }
- for (ccname = credlist; ccname && *ccname; ccname++) {
- gssd_setup_krb5_machine_gss_ccache(*ccname);
- if ((create_auth_rpc_client(clp, &rpc_clnt, &auth, uid,
- AUTHTYPE_KRB5)) == 0) {
- /* Success! */
- success++;
+ if (uid != 0 || (uid == 0 && root_uses_machine_creds == 0)) {
+ /* Tell krb5 gss which credentials cache to use */
+ for (dirname = ccachesearch; *dirname != NULL; dirname++) {
+ if (gssd_setup_krb5_user_gss_ccache(uid, clp->servername, *dirname) == 0)
+ create_resp = create_auth_rpc_client(clp, &rpc_clnt, &auth, uid,
+ AUTHTYPE_KRB5);
+ if (create_resp == 0)
break;
- }
- printerr(2, "WARNING: Failed to create krb5 context "
- "for user with uid %d with credentials "
- "cache %s for server %s\n",
- uid, *ccname, clp->servername);
- }
- gssd_free_krb5_machine_cred_list(credlist);
- if (!success) {
- printerr(0, "WARNING: Failed to create krb5 context "
- "for user with uid %d with any "
- "credentials cache for server %s\n",
- uid, clp->servername);
- goto out_return_error;
}
}
- else {
- /* Tell krb5 gss which credentials cache to use */
- gssd_setup_krb5_user_gss_ccache(uid, clp->servername);
-
- if ((create_auth_rpc_client(clp, &rpc_clnt, &auth, uid,
- AUTHTYPE_KRB5)) != 0) {
- printerr(0, "WARNING: Failed to create krb5 context "
- "for user with uid %d for server %s\n",
+ if (create_resp != 0) {
+ if (uid == 0 && root_uses_machine_creds == 1) {
+ int success = 0;
+
+ gssd_refresh_krb5_machine_credential(clp->servername,
+ NULL);
+ /*
+ * Get a list of credential cache names and try each
+ * of them until one works or we've tried them all
+ */
+ if (gssd_get_krb5_machine_cred_list(&credlist)) {
+ printerr(0, "ERROR: No credentials found "
+ "for connection to server %s\n",
+ clp->servername);
+ goto out_return_error;
+ }
+ for (ccname = credlist; ccname && *ccname; ccname++) {
+ gssd_setup_krb5_machine_gss_ccache(*ccname);
+ if ((create_auth_rpc_client(clp, &rpc_clnt,
+ &auth, uid,
+ AUTHTYPE_KRB5)) == 0) {
+ /* Success! */
+ success++;
+ break;
+ }
+ printerr(2, "WARNING: Failed to create krb5 context "
+ "for user with uid %d with credentials "
+ "cache %s for server %s\n",
+ uid, *ccname, clp->servername);
+ }
+ gssd_free_krb5_machine_cred_list(credlist);
+ if (!success) {
+ printerr(1, "WARNING: Failed to create krb5 context "
+ "for user with uid %d with any "
+ "credentials cache for server %s\n",
+ uid, clp->servername);
+ goto out_return_error;
+ }
+ } else {
+ printerr(1, "WARNING: Failed to create krb5 context "
+ "for user with uid %d for server %s\n",
uid, clp->servername);
goto out_return_error;
}
}
if (!authgss_get_private_data(auth, &pd)) {
- printerr(0, "WARNING: Failed to obtain authentication "
+ printerr(1, "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, &krb5oid)) {
+ if (serialize_context_for_kernel(pd.pd_ctx, &token, &krb5oid, NULL)) {
printerr(0, "WARNING: Failed to serialize krb5 context 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)) {
+ 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);