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Diffstat (limited to 'source4/nsswitch/wb_common.c')
-rw-r--r--source4/nsswitch/wb_common.c433
1 files changed, 0 insertions, 433 deletions
diff --git a/source4/nsswitch/wb_common.c b/source4/nsswitch/wb_common.c
deleted file mode 100644
index 89c751a4ef..0000000000
--- a/source4/nsswitch/wb_common.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
-
- winbind client common code
-
- Copyright (C) Tim Potter 2000
- Copyright (C) Andrew Tridgell 2000
- Copyright (C) Andrew Bartlett 2002
-
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 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.
-*/
-
-#include "winbind_client.h"
-
-/* Global variables. These are effectively the client state information */
-
-int winbindd_fd = -1; /* fd for winbindd socket */
-
-/* Free a response structure */
-
-void free_response(struct winbindd_response *response)
-{
- /* Free any allocated extra_data */
-
- if (response)
- SAFE_FREE(response->extra_data);
-}
-
-/* Initialise a request structure */
-
-void init_request(struct winbindd_request *request, int request_type)
-{
- request->length = sizeof(struct winbindd_request);
-
- request->cmd = (enum winbindd_cmd)request_type;
- request->pid = getpid();
-
-}
-
-/* Initialise a response structure */
-
-void init_response(struct winbindd_response *response)
-{
- /* Initialise return value */
-
- response->result = WINBINDD_ERROR;
-}
-
-/* Close established socket */
-
-void close_sock(void)
-{
- if (winbindd_fd != -1) {
- close(winbindd_fd);
- winbindd_fd = -1;
- }
-}
-
-/* Make sure socket handle isn't stdin, stdout or stderr */
-#define RECURSION_LIMIT 3
-
-static int make_nonstd_fd_internals(int fd, int limit /* Recursion limiter */)
-{
- int new_fd;
- if (fd >= 0 && fd <= 2) {
-#ifdef F_DUPFD
- if ((new_fd = fcntl(fd, F_DUPFD, 3)) == -1) {
- return -1;
- }
- /* Parinoia */
- if (new_fd < 3) {
- close(new_fd);
- return -1;
- }
- close(fd);
- return new_fd;
-#else
- if (limit <= 0)
- return -1;
-
- new_fd = dup(fd);
- if (new_fd == -1)
- return -1;
-
- /* use the program stack to hold our list of FDs to close */
- new_fd = make_nonstd_fd_internals(new_fd, limit - 1);
- close(fd);
- return new_fd;
-#endif
- }
- return fd;
-}
-
-static int make_safe_fd(int fd)
-{
- int result, flags;
- int new_fd = make_nonstd_fd_internals(fd, RECURSION_LIMIT);
- if (new_fd == -1) {
- close(fd);
- return -1;
- }
- /* Socket should be closed on exec() */
-
-#ifdef FD_CLOEXEC
- result = flags = fcntl(new_fd, F_GETFD, 0);
- if (flags >= 0) {
- flags |= FD_CLOEXEC;
- result = fcntl( new_fd, F_SETFD, flags );
- }
- if (result < 0) {
- close(new_fd);
- return -1;
- }
-#endif
- return new_fd;
-}
-
-/* Connect to winbindd socket */
-
-int winbind_open_pipe_sock(void)
-{
-#ifdef HAVE_UNIXSOCKET
- struct sockaddr_un sunaddr;
- static pid_t our_pid;
- struct stat st;
- pstring path;
- int fd;
-
- if (our_pid != getpid()) {
- close_sock();
- our_pid = getpid();
- }
-
- if (winbindd_fd != -1) {
- return winbindd_fd;
- }
-
- /* Check permissions on unix socket directory */
-
- if (lstat(WINBINDD_SOCKET_DIR, &st) == -1) {
- return -1;
- }
-
- if (!S_ISDIR(st.st_mode) ||
- (st.st_uid != 0 && st.st_uid != geteuid())) {
- return -1;
- }
-
- /* Connect to socket */
-
- strncpy(path, WINBINDD_SOCKET_DIR, sizeof(path) - 1);
- path[sizeof(path) - 1] = '\0';
-
- strncat(path, "/", sizeof(path) - 1);
- path[sizeof(path) - 1] = '\0';
-
- strncat(path, WINBINDD_SOCKET_NAME, sizeof(path) - 1);
- path[sizeof(path) - 1] = '\0';
-
- 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) {
- return -1;
- }
-
- /* Check permissions on unix socket file */
-
- if (!S_ISSOCK(st.st_mode) ||
- (st.st_uid != 0 && st.st_uid != geteuid())) {
- return -1;
- }
-
- /* Connect to socket */
-
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
- return -1;
- }
-
- if ((winbindd_fd = make_safe_fd( fd)) == -1) {
- return winbindd_fd;
- }
-
- if (connect(winbindd_fd, (struct sockaddr *)&sunaddr,
- sizeof(sunaddr)) == -1) {
- close_sock();
- return -1;
- }
-
- return winbindd_fd;
-#else
- return -1;
-#endif /* HAVE_UNIXSOCKET */
-}
-
-/* Write data to winbindd socket */
-
-int write_sock(void *buffer, int count)
-{
- int result, nwritten;
-
- /* Open connection to winbind daemon */
-
- restart:
-
- if (winbind_open_pipe_sock() == -1) {
- return -1;
- }
-
- /* Write data to socket */
-
- nwritten = 0;
-
- while(nwritten < count) {
- struct timeval tv;
- fd_set r_fds;
-
- /* Catch pipe close on other end by checking if a read()
- call would not block by calling select(). */
-
- FD_ZERO(&r_fds);
- FD_SET(winbindd_fd, &r_fds);
- ZERO_STRUCT(tv);
-
- if (select(winbindd_fd + 1, &r_fds, NULL, NULL, &tv) == -1) {
- close_sock();
- return -1; /* Select error */
- }
-
- /* Write should be OK if fd not available for reading */
-
- if (!FD_ISSET(winbindd_fd, &r_fds)) {
-
- /* Do the write */
-
- result = write(winbindd_fd,
- (char *)buffer + nwritten,
- count - nwritten);
-
- if ((result == -1) || (result == 0)) {
-
- /* Write failed */
-
- close_sock();
- return -1;
- }
-
- nwritten += result;
-
- } else {
-
- /* Pipe has closed on remote end */
-
- close_sock();
- goto restart;
- }
- }
-
- return nwritten;
-}
-
-/* Read data from winbindd socket */
-
-static int read_sock(void *buffer, int count)
-{
- int result = 0, nread = 0;
-
- /* Read data from socket */
-
- while(nread < count) {
-
- result = read(winbindd_fd, (char *)buffer + nread,
- count - nread);
-
- if ((result == -1) || (result == 0)) {
-
- /* Read failed. I think the only useful thing we
- can do here is just return -1 and fail since the
- transaction has failed half way through. */
-
- close_sock();
- return -1;
- }
-
- nread += result;
- }
-
- return result;
-}
-
-/* Read reply */
-
-int read_reply(struct winbindd_response *response)
-{
- int result1, result2 = 0;
-
- if (!response) {
- return -1;
- }
-
- /* Read fixed length response */
-
- if ((result1 = read_sock(response, sizeof(struct winbindd_response)))
- == -1) {
-
- return -1;
- }
-
- /* We actually send the pointer value of the extra_data field from
- the server. This has no meaning in the client's address space
- so we clear it out. */
-
- response->extra_data = NULL;
-
- /* Read variable length response */
-
- if (response->length > sizeof(struct winbindd_response)) {
- int extra_data_len = response->length -
- sizeof(struct winbindd_response);
-
- /* Mallocate memory for extra data */
-
- if (!(response->extra_data = malloc(extra_data_len))) {
- return -1;
- }
-
- if ((result2 = read_sock(response->extra_data, extra_data_len))
- == -1) {
- free_response(response);
- return -1;
- }
- }
-
- /* Return total amount of data read */
-
- return result1 + result2;
-}
-
-/*
- * send simple types of requests
- */
-
-NSS_STATUS winbindd_send_request(int req_type, struct winbindd_request *request)
-{
- struct winbindd_request lrequest;
-
- /* Check for our tricky environment variable */
-
- if (getenv(WINBINDD_DONT_ENV)) {
- return NSS_STATUS_NOTFOUND;
- }
-
- if (!request) {
- ZERO_STRUCT(lrequest);
- request = &lrequest;
- }
-
- /* Fill in request and send down pipe */
-
- init_request(request, req_type);
-
- if (write_sock(request, sizeof(*request)) == -1) {
- return NSS_STATUS_UNAVAIL;
- }
-
- return NSS_STATUS_SUCCESS;
-}
-
-/*
- * Get results from winbindd request
- */
-
-NSS_STATUS winbindd_get_response(struct winbindd_response *response)
-{
- struct winbindd_response lresponse;
-
- if (!response) {
- ZERO_STRUCT(lresponse);
- response = &lresponse;
- }
-
- init_response(response);
-
- /* Wait for reply */
- if (read_reply(response) == -1) {
- return NSS_STATUS_UNAVAIL;
- }
-
- /* Throw away extra data if client didn't request it */
- if (response == &lresponse) {
- free_response(response);
- }
-
- /* Copy reply data from socket */
- if (response->result != WINBINDD_OK) {
- return NSS_STATUS_NOTFOUND;
- }
-
- return NSS_STATUS_SUCCESS;
-}
-
-/* Handle simple types of requests */
-
-NSS_STATUS winbindd_request(int req_type,
- struct winbindd_request *request,
- struct winbindd_response *response)
-{
- NSS_STATUS status;
-
- status = winbindd_send_request(req_type, request);
- if (status != NSS_STATUS_SUCCESS)
- return(status);
- return winbindd_get_response(response);
-}
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