diff options
Diffstat (limited to 'source4/nsswitch/winbind_nss.c')
| -rw-r--r-- | source4/nsswitch/winbind_nss.c | 1341 |
1 files changed, 0 insertions, 1341 deletions
diff --git a/source4/nsswitch/winbind_nss.c b/source4/nsswitch/winbind_nss.c deleted file mode 100644 index 0b4c0ce1d0..0000000000 --- a/source4/nsswitch/winbind_nss.c +++ /dev/null @@ -1,1341 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - Windows NT Domain nsswitch module - - Copyright (C) Tim Potter 2000 - - 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" - -#ifdef HAVE_NS_API_H -#undef VOLATILE - -#include <ns_daemon.h> -#endif - -#define MAX_GETPWENT_USERS 250 -#define MAX_GETGRENT_USERS 250 - -/* Prototypes from wb_common.c */ - -extern int winbindd_fd; - - -#ifdef HAVE_NS_API_H -/* IRIX version */ - -static int send_next_request(nsd_file_t *, struct winbindd_request *); -static int do_list(int state, nsd_file_t *rq); - -static nsd_file_t *current_rq = NULL; -static int current_winbind_xid = 0; -static int next_winbind_xid = 0; - -typedef struct winbind_xid { - int xid; - nsd_file_t *rq; - struct winbindd_request *request; - struct winbind_xid *next; -} winbind_xid_t; - -static winbind_xid_t *winbind_xids = (winbind_xid_t *)0; - -static int -winbind_xid_new(int xid, nsd_file_t *rq, struct winbindd_request *request) -{ - winbind_xid_t *new; - - nsd_logprintf(NSD_LOG_LOW, - "entering winbind_xid_new xid = %d rq = 0x%x, request = 0x%x\n", - xid, rq, request); - new = (winbind_xid_t *)nsd_calloc(1,sizeof(winbind_xid_t)); - if (!new) { - nsd_logprintf(NSD_LOG_RESOURCE,"winbind_xid_new: failed malloc\n"); - return NSD_ERROR; - } - - new->xid = xid; - new->rq = rq; - new->request = request; - new->next = winbind_xids; - winbind_xids = new; - - return NSD_CONTINUE; -} - -/* -** This routine will look down the xid list and return the request -** associated with an xid. We remove the record if it is found. -*/ -nsd_file_t * -winbind_xid_lookup(int xid, struct winbindd_request **requestp) -{ - winbind_xid_t **last, *dx; - nsd_file_t *result=0; - - for (last = &winbind_xids, dx = winbind_xids; dx && (dx->xid != xid); - last = &dx->next, dx = dx->next); - if (dx) { - *last = dx->next; - result = dx->rq; - *requestp = dx->request; - SAFE_FREE(dx); - } - nsd_logprintf(NSD_LOG_LOW, - "entering winbind_xid_lookup xid = %d rq = 0x%x, request = 0x%x\n", - xid, result, dx->request); - - return result; -} - -static int -winbind_startnext_timeout(nsd_file_t **rqp, nsd_times_t *to) -{ - nsd_file_t *rq; - struct winbindd_request *request; - - nsd_logprintf(NSD_LOG_MIN, "timeout (winbind startnext)\n"); - rq = to->t_file; - *rqp = rq; - nsd_timeout_remove(rq); - request = to->t_clientdata; - return(send_next_request(rq, request)); -} - -static void -dequeue_request() -{ - nsd_file_t *rq; - struct winbindd_request *request; - - /* - * Check for queued requests - */ - if (winbind_xids) { - nsd_logprintf(NSD_LOG_MIN, "timeout (winbind) unqueue xid %d\n", - current_winbind_xid); - rq = winbind_xid_lookup(current_winbind_xid++, &request); - /* cause a timeout on the queued request so we can send it */ - nsd_timeout_new(rq,1,winbind_startnext_timeout,request); - } -} - -static int -do_request(nsd_file_t *rq, struct winbindd_request *request) -{ - if (winbind_xids == NULL) { - /* - * No outstanding requests. - * Send off the request to winbindd - */ - nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) sending request\n"); - return(send_next_request(rq, request)); - } else { - /* - * Just queue it up for now - previous callout or timout - * will start it up - */ - nsd_logprintf(NSD_LOG_MIN, - "lookup (winbind): queue request xid = %d\n", - next_winbind_xid); - return(winbind_xid_new(next_winbind_xid++, rq, request)); - } -} - -static int -winbind_callback(nsd_file_t **rqp, int fd) -{ - struct winbindd_response response; - struct winbindd_pw *pw = &response.data.pw; - struct winbindd_gr *gr = &response.data.gr; - nsd_file_t *rq; - NSS_STATUS status; - fstring result; - char *members; - int i, maxlen; - - dequeue_request(); - - nsd_logprintf(NSD_LOG_MIN, "entering callback (winbind)\n"); - - rq = current_rq; - *rqp = rq; - - nsd_timeout_remove(rq); - nsd_callback_remove(fd); - - ZERO_STRUCT(response); - status = winbindd_get_response(&response); - - if (status != NSS_STATUS_SUCCESS) { - /* free any extra data area in response structure */ - free_response(&response); - nsd_logprintf(NSD_LOG_MIN, - "callback (winbind) returning not found, status = %d\n", - status); - rq->f_status = NS_NOTFOUND; - return NSD_NEXT; - } - - maxlen = sizeof(result) - 1; - - switch ((int)rq->f_cmd_data) { - case WINBINDD_WINS_BYNAME: - case WINBINDD_WINS_BYIP: - snprintf(result,maxlen,"%s\n",response.data.winsresp); - break; - case WINBINDD_GETPWUID: - case WINBINDD_GETPWNAM: - snprintf(result,maxlen,"%s:%s:%d:%d:%s:%s:%s\n", - pw->pw_name, - pw->pw_passwd, - pw->pw_uid, - pw->pw_gid, - pw->pw_gecos, - pw->pw_dir, - pw->pw_shell); - break; - case WINBINDD_GETGRNAM: - case WINBINDD_GETGRGID: - if (gr->num_gr_mem && response.extra_data) - members = response.extra_data; - else - members = ""; - snprintf(result,maxlen,"%s:%s:%d:%s\n", - gr->gr_name, gr->gr_passwd, gr->gr_gid, members); - break; - case WINBINDD_SETGRENT: - case WINBINDD_SETPWENT: - nsd_logprintf(NSD_LOG_MIN, "callback (winbind) - SETPWENT/SETGRENT\n"); - free_response(&response); - return(do_list(1,rq)); - case WINBINDD_GETGRENT: - case WINBINDD_GETGRLST: - nsd_logprintf(NSD_LOG_MIN, - "callback (winbind) - %d GETGRENT responses\n", - response.data.num_entries); - if (response.data.num_entries) { - gr = (struct winbindd_gr *)response.extra_data; - if (! gr ) { - nsd_logprintf(NSD_LOG_MIN, " no extra_data\n"); - free_response(&response); - return NSD_ERROR; - } - members = (char *)response.extra_data + - (response.data.num_entries * sizeof(struct winbindd_gr)); - for (i = 0; i < response.data.num_entries; i++) { - snprintf(result,maxlen,"%s:%s:%d:%s\n", - gr->gr_name, gr->gr_passwd, gr->gr_gid, - &members[gr->gr_mem_ofs]); - nsd_logprintf(NSD_LOG_MIN, " GETGRENT %s\n",result); - nsd_append_element(rq,NS_SUCCESS,result,strlen(result)); - gr++; - } - } - i = response.data.num_entries; - free_response(&response); - if (i < MAX_GETPWENT_USERS) - return(do_list(2,rq)); - else - return(do_list(1,rq)); - case WINBINDD_GETPWENT: - nsd_logprintf(NSD_LOG_MIN, - "callback (winbind) - %d GETPWENT responses\n", - response.data.num_entries); - if (response.data.num_entries) { - pw = (struct winbindd_pw *)response.extra_data; - if (! pw ) { - nsd_logprintf(NSD_LOG_MIN, " no extra_data\n"); - free_response(&response); - return NSD_ERROR; - } - for (i = 0; i < response.data.num_entries; i++) { - snprintf(result,maxlen,"%s:%s:%d:%d:%s:%s:%s", - pw->pw_name, - pw->pw_passwd, - pw->pw_uid, - pw->pw_gid, - pw->pw_gecos, - pw->pw_dir, - pw->pw_shell); - nsd_logprintf(NSD_LOG_MIN, " GETPWENT %s\n",result); - nsd_append_element(rq,NS_SUCCESS,result,strlen(result)); - pw++; - } - } - i = response.data.num_entries; - free_response(&response); - if (i < MAX_GETPWENT_USERS) - return(do_list(2,rq)); - else - return(do_list(1,rq)); - case WINBINDD_ENDGRENT: - case WINBINDD_ENDPWENT: - nsd_logprintf(NSD_LOG_MIN, "callback (winbind) - ENDPWENT/ENDGRENT\n"); - nsd_append_element(rq,NS_SUCCESS,"\n",1); - free_response(&response); - return NSD_NEXT; - default: - free_response(&response); - nsd_logprintf(NSD_LOG_MIN, "callback (winbind) - no valid command\n"); - return NSD_NEXT; - } - nsd_logprintf(NSD_LOG_MIN, "callback (winbind) %s\n", result); - /* free any extra data area in response structure */ - free_response(&response); - nsd_set_result(rq,NS_SUCCESS,result,strlen(result),VOLATILE); - return NSD_OK; -} - -static int -winbind_timeout(nsd_file_t **rqp, nsd_times_t *to) -{ - nsd_file_t *rq; - - dequeue_request(); - - nsd_logprintf(NSD_LOG_MIN, "timeout (winbind)\n"); - - rq = to->t_file; - *rqp = rq; - - /* Remove the callback and timeout */ - nsd_callback_remove(winbindd_fd); - nsd_timeout_remove(rq); - - rq->f_status = NS_NOTFOUND; - return NSD_NEXT; -} - -static int -send_next_request(nsd_file_t *rq, struct winbindd_request *request) -{ - NSS_STATUS status; - long timeout; - - timeout = 1000; - - nsd_logprintf(NSD_LOG_MIN, "send_next_request (winbind) %d to = %d\n", - rq->f_cmd_data, timeout); - status = winbindd_send_request((int)rq->f_cmd_data,request); - SAFE_FREE(request); - - if (status != NSS_STATUS_SUCCESS) { - nsd_logprintf(NSD_LOG_MIN, - "send_next_request (winbind) error status = %d\n",status); - rq->f_status = status; - return NSD_NEXT; - } - - current_rq = rq; - - /* - * Set up callback and timeouts - */ - nsd_logprintf(NSD_LOG_MIN, "send_next_request (winbind) fd = %d\n",winbindd_fd); - nsd_callback_new(winbindd_fd,winbind_callback,NSD_READ); - nsd_timeout_new(rq,timeout,winbind_timeout,(void *)0); - return NSD_CONTINUE; -} - -int init(void) -{ - nsd_logprintf(NSD_LOG_MIN, "entering init (winbind)\n"); - return(NSD_OK); -} - -int lookup(nsd_file_t *rq) -{ - char *map; - char *key; - struct winbindd_request *request; - - nsd_logprintf(NSD_LOG_MIN, "entering lookup (winbind)\n"); - if (! rq) - return NSD_ERROR; - - map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0); - key = nsd_attr_fetch_string(rq->f_attrs, "key", (char*)0); - if (! map || ! key) { - nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) table or key not defined\n"); - rq->f_status = NS_BADREQ; - return NSD_ERROR; - } - - nsd_logprintf(NSD_LOG_MIN, "lookup (winbind %s)\n",map); - - request = (struct winbindd_request *)nsd_calloc(1,sizeof(struct winbindd_request)); - if (! request) { - nsd_logprintf(NSD_LOG_RESOURCE, - "lookup (winbind): failed malloc\n"); - return NSD_ERROR; - } - - if (strcasecmp(map,"passwd.byuid") == 0) { - request->data.uid = atoi(key); - rq->f_cmd_data = (void *)WINBINDD_GETPWUID; - } else if (strcasecmp(map,"passwd.byname") == 0) { - strncpy(request->data.username, key, - sizeof(request->data.username) - 1); - request->data.username[sizeof(request->data.username) - 1] = '\0'; - rq->f_cmd_data = (void *)WINBINDD_GETPWNAM; - } else if (strcasecmp(map,"group.byname") == 0) { - strncpy(request->data.groupname, key, - sizeof(request->data.groupname) - 1); - request->data.groupname[sizeof(request->data.groupname) - 1] = '\0'; - rq->f_cmd_data = (void *)WINBINDD_GETGRNAM; - } else if (strcasecmp(map,"group.bygid") == 0) { - request->data.gid = atoi(key); - rq->f_cmd_data = (void *)WINBINDD_GETGRGID; - } else if (strcasecmp(map,"hosts.byname") == 0) { - strncpy(request->data.winsreq, key, sizeof(request->data.winsreq) - 1); - request->data.winsreq[sizeof(request->data.winsreq) - 1] = '\0'; - rq->f_cmd_data = (void *)WINBINDD_WINS_BYNAME; - } else if (strcasecmp(map,"hosts.byaddr") == 0) { - strncpy(request->data.winsreq, key, sizeof(request->data.winsreq) - 1); - request->data.winsreq[sizeof(request->data.winsreq) - 1] = '\0'; - rq->f_cmd_data = (void *)WINBINDD_WINS_BYIP; - } else { - /* - * Don't understand this map - just return not found - */ - nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) unknown table\n"); - SAFE_FREE(request); - rq->f_status = NS_NOTFOUND; - return NSD_NEXT; - } - - return(do_request(rq, request)); -} - -int list(nsd_file_t *rq) -{ - char *map; - - nsd_logprintf(NSD_LOG_MIN, "entering list (winbind)\n"); - if (! rq) - return NSD_ERROR; - - map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0); - if (! map ) { - nsd_logprintf(NSD_LOG_MIN, "list (winbind) table not defined\n"); - rq->f_status = NS_BADREQ; - return NSD_ERROR; - } - - nsd_logprintf(NSD_LOG_MIN, "list (winbind %s)\n",map); - - return (do_list(0,rq)); -} - -static int -do_list(int state, nsd_file_t *rq) -{ - char *map; - struct winbindd_request *request; - - nsd_logprintf(NSD_LOG_MIN, "entering do_list (winbind) state = %d\n",state); - - map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0); - request = (struct winbindd_request *)nsd_calloc(1,sizeof(struct winbindd_request)); - if (! request) { - nsd_logprintf(NSD_LOG_RESOURCE, - "do_list (winbind): failed malloc\n"); - return NSD_ERROR; - } - - if (strcasecmp(map,"passwd.byname") == 0) { - switch (state) { - case 0: - rq->f_cmd_data = (void *)WINBINDD_SETPWENT; - break; - case 1: - request->data.num_entries = MAX_GETPWENT_USERS; - rq->f_cmd_data = (void *)WINBINDD_GETPWENT; - break; - case 2: - rq->f_cmd_data = (void *)WINBINDD_ENDPWENT; - break; - default: - nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown state\n"); - SAFE_FREE(request); - rq->f_status = NS_NOTFOUND; - return NSD_NEXT; - } - } else if (strcasecmp(map,"group.byname") == 0) { - switch (state) { - case 0: - rq->f_cmd_data = (void *)WINBINDD_SETGRENT; - break; - case 1: - request->data.num_entries = MAX_GETGRENT_USERS; - rq->f_cmd_data = (void *)WINBINDD_GETGRENT; - break; - case 2: - rq->f_cmd_data = (void *)WINBINDD_ENDGRENT; - break; - default: - nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown state\n"); - SAFE_FREE(request); - rq->f_status = NS_NOTFOUND; - return NSD_NEXT; - } - } else { - /* - * Don't understand this map - just return not found - */ - nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown table\n"); - SAFE_FREE(request); - rq->f_status = NS_NOTFOUND; - return NSD_NEXT; - } - - return(do_request(rq, request)); -} - -#else - -/* Allocate some space from the nss static buffer. The buffer and buflen - are the pointers passed in by the C library to the _nss_ntdom_* - functions. */ - -static char *get_static(char **buffer, int *buflen, int len) -{ - char *result; - - /* Error check. We return false if things aren't set up right, or - there isn't enough buffer space left. */ - - if ((buffer == NULL) || (buflen == NULL) || (*buflen < len)) { - return NULL; - } - - /* Return an index into the static buffer */ - - result = *buffer; - *buffer += len; - *buflen -= len; - - return result; -} - -/* I've copied the strtok() replacement function next_token() from - lib/util_str.c as I really don't want to have to link in any other - objects if I can possibly avoid it. */ - -BOOL next_token(char **ptr,char *buff,char *sep, size_t bufsize) -{ - char *s; - BOOL quoted; - size_t len=1; - - if (!ptr) return(False); - - s = *ptr; - - /* default to simple separators */ - if (!sep) sep = " \t\n\r"; - - /* find the first non sep char */ - while (*s && strchr(sep,*s)) s++; - - /* nothing left? */ - if (! *s) return(False); - - /* copy over the token */ - for (quoted = False; len < bufsize && *s && (quoted || !strchr(sep,*s)); s++) { - if (*s == '\"') { - quoted = !quoted; - } else { - len++; - *buff++ = *s; - } - } - - *ptr = (*s) ? s+1 : s; - *buff = 0; - - return(True); -} - - -/* Fill a pwent structure from a winbindd_response structure. We use - the static data passed to us by libc to put strings and stuff in. - Return NSS_STATUS_TRYAGAIN if we run out of memory. */ - -static NSS_STATUS fill_pwent(struct passwd *result, - struct winbindd_pw *pw, - char **buffer, size_t *buflen) -{ - /* User name */ - - if ((result->pw_name = - get_static(buffer, buflen, strlen(pw->pw_name) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->pw_name, pw->pw_name); - - /* Password */ - - if ((result->pw_passwd = - get_static(buffer, buflen, strlen(pw->pw_passwd) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->pw_passwd, pw->pw_passwd); - - /* [ug]id */ - - result->pw_uid = pw->pw_uid; - result->pw_gid = pw->pw_gid; - - /* GECOS */ - - if ((result->pw_gecos = - get_static(buffer, buflen, strlen(pw->pw_gecos) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->pw_gecos, pw->pw_gecos); - - /* Home directory */ - - if ((result->pw_dir = - get_static(buffer, buflen, strlen(pw->pw_dir) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->pw_dir, pw->pw_dir); - - /* Logon shell */ - - if ((result->pw_shell = - get_static(buffer, buflen, strlen(pw->pw_shell) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->pw_shell, pw->pw_shell); - - /* The struct passwd for Solaris has some extra fields which must - be initialised or nscd crashes. */ - -#if HAVE_PASSWD_PW_COMMENT - result->pw_comment = ""; -#endif - -#if HAVE_PASSWD_PW_AGE - result->pw_age = ""; -#endif - - return NSS_STATUS_SUCCESS; -} - -/* Fill a grent structure from a winbindd_response structure. We use - the static data passed to us by libc to put strings and stuff in. - Return NSS_STATUS_TRYAGAIN if we run out of memory. */ - -static NSS_STATUS fill_grent(struct group *result, struct winbindd_gr *gr, - char *gr_mem, char **buffer, size_t *buflen) -{ - fstring name; - int i; - char *tst; - - /* Group name */ - - if ((result->gr_name = - get_static(buffer, buflen, strlen(gr->gr_name) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->gr_name, gr->gr_name); - - /* Password */ - - if ((result->gr_passwd = - get_static(buffer, buflen, strlen(gr->gr_passwd) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy(result->gr_passwd, gr->gr_passwd); - - /* gid */ - - result->gr_gid = gr->gr_gid; - - /* Group membership */ - - if ((gr->num_gr_mem < 0) || !gr_mem) { - gr->num_gr_mem = 0; - } - - /* this next value is a pointer to a pointer so let's align it */ - - /* Calculate number of extra bytes needed to align on pointer size boundry */ - if ((i = (unsigned long)(*buffer) % sizeof(char*)) != 0) - i = sizeof(char*) - i; - - if ((tst = get_static(buffer, buflen, ((gr->num_gr_mem + 1) * - sizeof(char *)+i))) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - result->gr_mem = (char **)(tst + i); - - if (gr->num_gr_mem == 0) { - - /* Group is empty */ - - *(result->gr_mem) = NULL; - return NSS_STATUS_SUCCESS; - } - - /* Start looking at extra data */ - - i = 0; - - while(next_token((char **)&gr_mem, name, ",", sizeof(fstring))) { - - /* Allocate space for member */ - - if (((result->gr_mem)[i] = - get_static(buffer, buflen, strlen(name) + 1)) == NULL) { - - /* Out of memory */ - - return NSS_STATUS_TRYAGAIN; - } - - strcpy((result->gr_mem)[i], name); - i++; - } - - /* Terminate list */ - - (result->gr_mem)[i] = NULL; - - return NSS_STATUS_SUCCESS; -} - -/* - * NSS user functions - */ - -static struct winbindd_response getpwent_response; - -static int ndx_pw_cache; /* Current index into pwd cache */ -static int num_pw_cache; /* Current size of pwd cache */ - -/* Rewind "file pointer" to start of ntdom password database */ - -NSS_STATUS -_nss_winbind_setpwent(void) -{ -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: setpwent\n", getpid()); -#endif - - if (num_pw_cache > 0) { - ndx_pw_cache = num_pw_cache = 0; - free_response(&getpwent_response); - } - - return winbindd_request(WINBINDD_SETPWENT, NULL, NULL); -} - -/* Close ntdom password database "file pointer" */ - -NSS_STATUS -_nss_winbind_endpwent(void) -{ -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: endpwent\n", getpid()); -#endif - - if (num_pw_cache > 0) { - ndx_pw_cache = num_pw_cache = 0; - free_response(&getpwent_response); - } - - return winbindd_request(WINBINDD_ENDPWENT, NULL, NULL); -} - -/* Fetch the next password entry from ntdom password database */ - -NSS_STATUS -_nss_winbind_getpwent_r(struct passwd *result, char *buffer, - size_t buflen, int *errnop) -{ - NSS_STATUS ret; - struct winbindd_request request; - static int called_again; - -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: getpwent\n", getpid()); -#endif - - /* Return an entry from the cache if we have one, or if we are - called again because we exceeded our static buffer. */ - - if ((ndx_pw_cache < num_pw_cache) || called_again) { - goto return_result; - } - - /* Else call winbindd to get a bunch of entries */ - - if (num_pw_cache > 0) { - free_response(&getpwent_response); - } - - ZERO_STRUCT(request); - ZERO_STRUCT(getpwent_response); - - request.data.num_entries = MAX_GETPWENT_USERS; - - ret = winbindd_request(WINBINDD_GETPWENT, &request, - &getpwent_response); - - if (ret == NSS_STATUS_SUCCESS) { - struct winbindd_pw *pw_cache; - - /* Fill cache */ - - ndx_pw_cache = 0; - num_pw_cache = getpwent_response.data.num_entries; - - /* Return a result */ - - return_result: - - pw_cache = getpwent_response.extra_data; - - /* Check data is valid */ - - if (pw_cache == NULL) { - return NSS_STATUS_NOTFOUND; - } - - ret = fill_pwent(result, &pw_cache[ndx_pw_cache], - &buffer, &buflen); - - /* Out of memory - try again */ - - if (ret == NSS_STATUS_TRYAGAIN) { - called_again = True; - *errnop = errno = ERANGE; - return ret; - } - - *errnop = errno = 0; - called_again = False; - ndx_pw_cache++; - - /* If we've finished with this lot of results free cache */ - - if (ndx_pw_cache == num_pw_cache) { - ndx_pw_cache = num_pw_cache = 0; - free_response(&getpwent_response); - } - } - - return ret; -} - -/* Return passwd struct from uid */ - -NSS_STATUS -_nss_winbind_getpwuid_r(uid_t uid, struct passwd *result, char *buffer, - size_t buflen, int *errnop) -{ - NSS_STATUS ret; - static struct winbindd_response response; - struct winbindd_request request; - static int keep_response=0; - - /* If our static buffer needs to be expanded we are called again */ - if (!keep_response) { - - /* Call for the first time */ - - ZERO_STRUCT(response); - ZERO_STRUCT(request); - - request.data.uid = uid; - - ret = winbindd_request(WINBINDD_GETPWUID, &request, &response); - - if (ret == NSS_STATUS_SUCCESS) { - ret = fill_pwent(result, &response.data.pw, - &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - } - - } else { - - /* We've been called again */ - - ret = fill_pwent(result, &response.data.pw, &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - - keep_response = False; - *errnop = errno = 0; - } - - free_response(&response); - return ret; -} - -/* Return passwd struct from username */ - -NSS_STATUS -_nss_winbind_getpwnam_r(const char *name, struct passwd *result, char *buffer, - size_t buflen, int *errnop) -{ - NSS_STATUS ret; - static struct winbindd_response response; - struct winbindd_request request; - static int keep_response; - -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: getpwnam %s\n", getpid(), name); -#endif - - /* If our static buffer needs to be expanded we are called again */ - - if (!keep_response) { - - /* Call for the first time */ - - ZERO_STRUCT(response); - ZERO_STRUCT(request); - - strncpy(request.data.username, name, - sizeof(request.data.username) - 1); - request.data.username - [sizeof(request.data.username) - 1] = '\0'; - - ret = winbindd_request(WINBINDD_GETPWNAM, &request, &response); - - if (ret == NSS_STATUS_SUCCESS) { - ret = fill_pwent(result, &response.data.pw, &buffer, - &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - } - - } else { - - /* We've been called again */ - - ret = fill_pwent(result, &response.data.pw, &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - - keep_response = False; - *errnop = errno = 0; - } - - free_response(&response); - return ret; -} - -/* - * NSS group functions - */ - -static struct winbindd_response getgrent_response; - -static int ndx_gr_cache; /* Current index into grp cache */ -static int num_gr_cache; /* Current size of grp cache */ - -/* Rewind "file pointer" to start of ntdom group database */ - -NSS_STATUS -_nss_winbind_setgrent(void) -{ -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: setgrent\n", getpid()); -#endif - - if (num_gr_cache > 0) { - ndx_gr_cache = num_gr_cache = 0; - free_response(&getgrent_response); - } - - return winbindd_request(WINBINDD_SETGRENT, NULL, NULL); -} - -/* Close "file pointer" for ntdom group database */ - -NSS_STATUS -_nss_winbind_endgrent(void) -{ -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: endgrent\n", getpid()); -#endif - - if (num_gr_cache > 0) { - ndx_gr_cache = num_gr_cache = 0; - free_response(&getgrent_response); - } - - return winbindd_request(WINBINDD_ENDGRENT, NULL, NULL); -} - -/* Get next entry from ntdom group database */ - -static NSS_STATUS -winbind_getgrent(enum winbindd_cmd cmd, - struct group *result, - char *buffer, size_t buflen, int *errnop) -{ - NSS_STATUS ret; - static struct winbindd_request request; - static int called_again; - - -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: getgrent\n", getpid()); -#endif - - /* Return an entry from the cache if we have one, or if we are - called again because we exceeded our static buffer. */ - - if ((ndx_gr_cache < num_gr_cache) || called_again) { - goto return_result; - } - - /* Else call winbindd to get a bunch of entries */ - - if (num_gr_cache > 0) { - free_response(&getgrent_response); - } - - ZERO_STRUCT(request); - ZERO_STRUCT(getgrent_response); - - request.data.num_entries = MAX_GETGRENT_USERS; - - ret = winbindd_request(cmd, &request, - &getgrent_response); - - if (ret == NSS_STATUS_SUCCESS) { - struct winbindd_gr *gr_cache; - int mem_ofs; - - /* Fill cache */ - - ndx_gr_cache = 0; - num_gr_cache = getgrent_response.data.num_entries; - - /* Return a result */ - - return_result: - - gr_cache = getgrent_response.extra_data; - - /* Check data is valid */ - - if (gr_cache == NULL) { - return NSS_STATUS_NOTFOUND; - } - - /* Fill group membership. The offset into the extra data - for the group membership is the reported offset plus the - size of all the winbindd_gr records returned. */ - - mem_ofs = gr_cache[ndx_gr_cache].gr_mem_ofs + - num_gr_cache * sizeof(struct winbindd_gr); - - ret = fill_grent(result, &gr_cache[ndx_gr_cache], - ((char *)getgrent_response.extra_data)+mem_ofs, - &buffer, &buflen); - - /* Out of memory - try again */ - - if (ret == NSS_STATUS_TRYAGAIN) { - called_again = True; - *errnop = errno = ERANGE; - return ret; - } - - *errnop = 0; - called_again = False; - ndx_gr_cache++; - - /* If we've finished with this lot of results free cache */ - - if (ndx_gr_cache == num_gr_cache) { - ndx_gr_cache = num_gr_cache = 0; - free_response(&getgrent_response); - } - } - - return ret; -} - - -NSS_STATUS -_nss_winbind_getgrent_r(struct group *result, - char *buffer, size_t buflen, int *errnop) -{ - return winbind_getgrent(WINBINDD_GETGRENT, result, buffer, buflen, errnop); -} - -NSS_STATUS -_nss_winbind_getgrlst_r(struct group *result, - char *buffer, size_t buflen, int *errnop) -{ - return winbind_getgrent(WINBINDD_GETGRLST, result, buffer, buflen, errnop); -} - -/* Return group struct from group name */ - -NSS_STATUS -_nss_winbind_getgrnam_r(const char *name, - struct group *result, char *buffer, - size_t buflen, int *errnop) -{ - NSS_STATUS ret; - static struct winbindd_response response; - struct winbindd_request request; - static int keep_response; - -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: getgrnam %s\n", getpid(), name); -#endif - - /* If our static buffer needs to be expanded we are called again */ - - if (!keep_response) { - - /* Call for the first time */ - - ZERO_STRUCT(request); - ZERO_STRUCT(response); - - strncpy(request.data.groupname, name, - sizeof(request.data.groupname)); - request.data.groupname - [sizeof(request.data.groupname) - 1] = '\0'; - - ret = winbindd_request(WINBINDD_GETGRNAM, &request, &response); - - if (ret == NSS_STATUS_SUCCESS) { - ret = fill_grent(result, &response.data.gr, - response.extra_data, - &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - } - - } else { - - /* We've been called again */ - - ret = fill_grent(result, &response.data.gr, - response.extra_data, &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - - keep_response = False; - *errnop = 0; - } - - free_response(&response); - return ret; -} - -/* Return group struct from gid */ - -NSS_STATUS -_nss_winbind_getgrgid_r(gid_t gid, - struct group *result, char *buffer, - size_t buflen, int *errnop) -{ - NSS_STATUS ret; - static struct winbindd_response response; - struct winbindd_request request; - static int keep_response; - -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: getgrgid %d\n", getpid(), gid); -#endif - - /* If our static buffer needs to be expanded we are called again */ - - if (!keep_response) { - - /* Call for the first time */ - - ZERO_STRUCT(request); - ZERO_STRUCT(response); - - request.data.gid = gid; - - ret = winbindd_request(WINBINDD_GETGRGID, &request, &response); - - if (ret == NSS_STATUS_SUCCESS) { - - ret = fill_grent(result, &response.data.gr, - response.extra_data, - &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - } - - } else { - - /* We've been called again */ - - ret = fill_grent(result, &response.data.gr, - response.extra_data, &buffer, &buflen); - - if (ret == NSS_STATUS_TRYAGAIN) { - keep_response = True; - *errnop = errno = ERANGE; - return ret; - } - - keep_response = False; - *errnop = 0; - } - - free_response(&response); - return ret; -} - -/* Initialise supplementary groups */ - -NSS_STATUS -_nss_winbind_initgroups_dyn(char *user, gid_t group, long int *start, - long int *size, gid_t **groups, long int limit, - int *errnop) -{ - NSS_STATUS ret; - struct winbindd_request request; - struct winbindd_response response; - int i; - -#ifdef DEBUG_NSS - fprintf(stderr, "[%5d]: initgroups %s (%d)\n", getpid(), - user, group); -#endif - - ZERO_STRUCT(request); - ZERO_STRUCT(response); - - strncpy(request.data.username, user, - sizeof(request.data.username) - 1); - - ret = winbindd_request(WINBINDD_GETGROUPS, &request, &response); - - if (ret == NSS_STATUS_SUCCESS) { - int num_gids = response.data.num_entries; - gid_t *gid_list = (gid_t *)response.extra_data; - - /* Copy group list to client */ - - for (i = 0; i < num_gids; i++) { - - /* Skip primary group */ - - if (gid_list[i] == group) continue; - - /* Add to buffer */ - - if (*start == *size && limit <= 0) { - (*groups) = realloc( - (*groups), (2 * (*size) + 1) * sizeof(**groups)); - if (! *groups) goto done; - *size = 2 * (*size) + 1; - } - - if (*start == *size) goto done; - - (*groups)[*start] = gid_list[i]; - *start += 1; - - /* Filled buffer? */ - - if (*start == limit) goto done; - } - } - - /* Back to your regularly scheduled programming */ - - done: - return ret; -} - -#endif |