This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
+ modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "winbind_client.h"
/* Global variables. These are effectively the client state information */
int winbindd_fd = -1; /* fd for winbindd socket */
+static int is_privileged = 0;
/* Free a response structure */
-void free_response(struct winbindd_response *response)
+void winbindd_free_response(struct winbindd_response *response)
{
/* Free any allocated extra_data */
if (response)
- SAFE_FREE(response->extra_data);
+ SAFE_FREE(response->extra_data.data);
}
/* Initialise a request structure */
-void init_request(struct winbindd_request *request, int request_type)
+void winbindd_init_request(struct winbindd_request *request, int request_type)
{
request->length = sizeof(struct winbindd_request);
/* Initialise a response structure */
-void init_response(struct winbindd_response *response)
+static void init_response(struct winbindd_response *response)
{
/* Initialise return value */
/* Close established socket */
-void close_sock(void)
+void winbind_close_sock(void)
{
if (winbindd_fd != -1) {
close(winbindd_fd);
}
#define CONNECT_TIMEOUT 30
-#define WRITE_TIMEOUT CONNECT_TIMEOUT
-#define READ_TIMEOUT CONNECT_TIMEOUT
/* Make sure socket handle isn't stdin, stdout or stderr */
#define RECURSION_LIMIT 3
{
struct sockaddr_un sunaddr;
struct stat st;
- pstring path;
+ char *path = NULL;
int fd;
int wait_time;
int slept;
-
+
/* Check permissions on unix socket directory */
-
+
if (lstat(dir, &st) == -1) {
+ errno = ENOENT;
return -1;
}
-
- if (!S_ISDIR(st.st_mode) ||
+
+ if (!S_ISDIR(st.st_mode) ||
(st.st_uid != 0 && st.st_uid != geteuid())) {
+ errno = ENOENT;
return -1;
}
-
+
/* Connect to socket */
-
- strncpy(path, dir, sizeof(path) - 1);
- path[sizeof(path) - 1] = '\0';
-
- strncat(path, "/", sizeof(path) - 1 - strlen(path));
- path[sizeof(path) - 1] = '\0';
-
- strncat(path, WINBINDD_SOCKET_NAME, sizeof(path) - 1 - strlen(path));
- path[sizeof(path) - 1] = '\0';
-
+
+ if (asprintf(&path, "%s/%s", dir, WINBINDD_SOCKET_NAME) < 0) {
+ return -1;
+ }
+
ZERO_STRUCT(sunaddr);
sunaddr.sun_family = AF_UNIX;
strncpy(sunaddr.sun_path, path, sizeof(sunaddr.sun_path) - 1);
-
+
/* If socket file doesn't exist, don't bother trying to connect
with retry. This is an attempt to make the system usable when
the winbindd daemon is not running. */
if (lstat(path, &st) == -1) {
+ errno = ENOENT;
+ SAFE_FREE(path);
return -1;
}
-
+
+ SAFE_FREE(path);
/* Check permissions on unix socket file */
-
- if (!S_ISSOCK(st.st_mode) ||
+
+ if (!S_ISSOCK(st.st_mode) ||
(st.st_uid != 0 && st.st_uid != geteuid())) {
+ errno = ENOENT;
return -1;
}
-
+
/* Connect to socket */
-
+
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
return -1;
}
return -1;
}
+static const char *winbindd_socket_dir(void)
+{
+#ifdef SOCKET_WRAPPER
+ const char *env_dir;
+
+ env_dir = getenv(WINBINDD_SOCKET_DIR_ENVVAR);
+ if (env_dir) {
+ return env_dir;
+ }
+#endif
+
+ return WINBINDD_SOCKET_DIR;
+}
+
/* Connect to winbindd socket */
-static int winbind_open_pipe_sock(int recursing)
+static int winbind_open_pipe_sock(int recursing, int need_priv)
{
#ifdef HAVE_UNIXSOCKET
static pid_t our_pid;
ZERO_STRUCT(response);
if (our_pid != getpid()) {
- close_sock();
+ winbind_close_sock();
our_pid = getpid();
}
+
+ if ((need_priv != 0) && (is_privileged == 0)) {
+ winbind_close_sock();
+ }
if (winbindd_fd != -1) {
return winbindd_fd;
return -1;
}
- if ((winbindd_fd = winbind_named_pipe_sock(WINBINDD_SOCKET_DIR)) == -1) {
+ if ((winbindd_fd = winbind_named_pipe_sock(winbindd_socket_dir())) == -1) {
return -1;
}
+ is_privileged = 0;
+
/* version-check the socket */
- request.flags = WBFLAG_RECURSE;
+ request.wb_flags = WBFLAG_RECURSE;
if ((winbindd_request_response(WINBINDD_INTERFACE_VERSION, &request, &response) != NSS_STATUS_SUCCESS) || (response.data.interface_version != WINBIND_INTERFACE_VERSION)) {
- close_sock();
+ winbind_close_sock();
return -1;
}
/* try and get priv pipe */
- request.flags = WBFLAG_RECURSE;
+ request.wb_flags = WBFLAG_RECURSE;
if (winbindd_request_response(WINBINDD_PRIV_PIPE_DIR, &request, &response) == NSS_STATUS_SUCCESS) {
int fd;
- if ((fd = winbind_named_pipe_sock(response.extra_data)) != -1) {
+ if ((fd = winbind_named_pipe_sock((char *)response.extra_data.data)) != -1) {
close(winbindd_fd);
winbindd_fd = fd;
+ is_privileged = 1;
}
}
- SAFE_FREE(response.extra_data);
+ if ((need_priv != 0) && (is_privileged == 0)) {
+ return -1;
+ }
+
+ SAFE_FREE(response.extra_data.data);
return winbindd_fd;
#else
/* Write data to winbindd socket */
-int write_sock(void *buffer, int count, int recursing)
+int winbind_write_sock(void *buffer, int count, int recursing, int need_priv)
{
int result, nwritten;
restart:
- if (winbind_open_pipe_sock(recursing) == -1) {
+ if (winbind_open_pipe_sock(recursing, need_priv) == -1) {
+ errno = ENOENT;
return -1;
}
ZERO_STRUCT(tv);
if (select(winbindd_fd + 1, &r_fds, NULL, NULL, &tv) == -1) {
- close_sock();
+ winbind_close_sock();
return -1; /* Select error */
}
/* Write failed */
- close_sock();
+ winbind_close_sock();
return -1;
}
/* Pipe has closed on remote end */
- close_sock();
+ winbind_close_sock();
goto restart;
}
}
/* Read data from winbindd socket */
-static int read_sock(void *buffer, int count)
+int winbind_read_sock(void *buffer, int count)
{
- int result = 0, nread = 0;
+ int nread = 0;
int total_time = 0, selret;
if (winbindd_fd == -1) {
tv.tv_sec = 5;
if ((selret = select(winbindd_fd + 1, &r_fds, NULL, NULL, &tv)) == -1) {
- close_sock();
+ winbind_close_sock();
return -1; /* Select error */
}
/* Not ready for read yet... */
if (total_time >= 30) {
/* Timeout */
- close_sock();
+ winbind_close_sock();
return -1;
}
total_time += 5;
/* Do the Read */
- result = read(winbindd_fd, (char *)buffer + nread,
+ int result = read(winbindd_fd, (char *)buffer + nread,
count - nread);
if ((result == -1) || (result == 0)) {
can do here is just return -1 and fail since the
transaction has failed half way through. */
- close_sock();
+ winbind_close_sock();
return -1;
}
}
}
- return result;
+ return nread;
}
/* Read reply */
-int read_reply(struct winbindd_response *response)
+int winbindd_read_reply(struct winbindd_response *response)
{
int result1, result2 = 0;
/* Read fixed length response */
- if ((result1 = read_sock(response, sizeof(struct winbindd_response)))
- == -1) {
-
+ result1 = winbind_read_sock(response,
+ sizeof(struct winbindd_response));
+ if (result1 == -1) {
return -1;
}
the server. This has no meaning in the client's address space
so we clear it out. */
- response->extra_data = NULL;
+ response->extra_data.data = NULL;
/* Read variable length response */
/* Mallocate memory for extra data */
- if (!(response->extra_data = malloc(extra_data_len))) {
+ if (!(response->extra_data.data = malloc(extra_data_len))) {
return -1;
}
- if ((result2 = read_sock(response->extra_data, extra_data_len))
- == -1) {
- free_response(response);
+ result2 = winbind_read_sock(response->extra_data.data,
+ extra_data_len);
+ if (result2 == -1) {
+ winbindd_free_response(response);
return -1;
}
}
* send simple types of requests
*/
-NSS_STATUS winbindd_send_request(int req_type, struct winbindd_request *request)
+NSS_STATUS winbindd_send_request(int req_type, int need_priv,
+ struct winbindd_request *request)
{
struct winbindd_request lrequest;
- char *env;
- int value;
-
+
/* Check for our tricky environment variable */
- if ( (env = getenv(WINBINDD_DONT_ENV)) != NULL ) {
- value = atoi(env);
- if ( value == 1 )
- return NSS_STATUS_NOTFOUND;
+ if (winbind_env_set()) {
+ return NSS_STATUS_NOTFOUND;
}
if (!request) {
/* Fill in request and send down pipe */
- init_request(request, req_type);
+ winbindd_init_request(request, req_type);
- if (write_sock(request, sizeof(*request), request->flags & WBFLAG_RECURSE) == -1) {
+ if (winbind_write_sock(request, sizeof(*request),
+ request->wb_flags & WBFLAG_RECURSE,
+ need_priv) == -1)
+ {
+ /* Set ENOENT for consistency. Required by some apps */
+ errno = ENOENT;
+
return NSS_STATUS_UNAVAIL;
}
if ((request->extra_len != 0) &&
- (write_sock(request->extra_data, request->extra_len, request->flags & WBFLAG_RECURSE) == -1)) {
+ (winbind_write_sock(request->extra_data.data,
+ request->extra_len,
+ request->wb_flags & WBFLAG_RECURSE,
+ need_priv) == -1))
+ {
+ /* Set ENOENT for consistency. Required by some apps */
+ errno = ENOENT;
+
return NSS_STATUS_UNAVAIL;
}
init_response(response);
/* Wait for reply */
- if (read_reply(response) == -1) {
+ if (winbindd_read_reply(response) == -1) {
+ /* Set ENOENT for consistency. Required by some apps */
+ errno = ENOENT;
+
return NSS_STATUS_UNAVAIL;
}
/* Throw away extra data if client didn't request it */
if (response == &lresponse) {
- free_response(response);
+ winbindd_free_response(response);
}
/* Copy reply data from socket */
int count = 0;
while ((status == NSS_STATUS_UNAVAIL) && (count < 10)) {
- status = winbindd_send_request(req_type, request);
+ status = winbindd_send_request(req_type, 0, request);
if (status != NSS_STATUS_SUCCESS)
return(status);
status = winbindd_get_response(response);
return status;
}
-/*************************************************************************
- A couple of simple functions to disable winbindd lookups and re-
- enable them
- ************************************************************************/
-
-/* Use putenv() instead of setenv() in these functions as not all
- environments have the latter. */
-
-BOOL winbind_off( void )
+NSS_STATUS winbindd_priv_request_response(int req_type,
+ struct winbindd_request *request,
+ struct winbindd_response *response)
{
- static char *s = CONST_DISCARD(char *, WINBINDD_DONT_ENV "=1");
+ NSS_STATUS status = NSS_STATUS_UNAVAIL;
+ int count = 0;
+
+ while ((status == NSS_STATUS_UNAVAIL) && (count < 10)) {
+ status = winbindd_send_request(req_type, 1, request);
+ if (status != NSS_STATUS_SUCCESS)
+ return(status);
+ status = winbindd_get_response(response);
+ count += 1;
+ }
- return putenv(s) != -1;
+ return status;
}
-BOOL winbind_on( void )
-{
- static char *s = CONST_DISCARD(char *, WINBINDD_DONT_ENV "=0");
+/*************************************************************************
+ ************************************************************************/
- return putenv(s) != -1;
+const char *nss_err_str(NSS_STATUS ret)
+{
+ switch (ret) {
+ case NSS_STATUS_TRYAGAIN:
+ return "NSS_STATUS_TRYAGAIN";
+ case NSS_STATUS_SUCCESS:
+ return "NSS_STATUS_SUCCESS";
+ case NSS_STATUS_NOTFOUND:
+ return "NSS_STATUS_NOTFOUND";
+ case NSS_STATUS_UNAVAIL:
+ return "NSS_STATUS_UNAVAIL";
+#ifdef NSS_STATUS_RETURN
+ case NSS_STATUS_RETURN:
+ return "NSS_STATUS_RETURN";
+#endif
+ default:
+ return "UNKNOWN RETURN CODE!!!!!!!";
+ }
}
-
git.samba.org / tprouty / samba.git / blobdiff