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Diffstat (limited to 'source4/nsswitch/winbindd_user.c')
-rw-r--r--source4/nsswitch/winbindd_user.c607
1 files changed, 607 insertions, 0 deletions
diff --git a/source4/nsswitch/winbindd_user.c b/source4/nsswitch/winbindd_user.c
new file mode 100644
index 0000000000..ee05543d30
--- /dev/null
+++ b/source4/nsswitch/winbindd_user.c
@@ -0,0 +1,607 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Winbind daemon - user related functions
+
+ Copyright (C) Tim Potter 2000
+ Copyright (C) Jeremy Allison 2001.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "winbindd.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+/* Fill a pwent structure with information we have obtained */
+
+static BOOL winbindd_fill_pwent(char *dom_name, char *user_name,
+ DOM_SID *user_sid, DOM_SID *group_sid,
+ char *full_name, struct winbindd_pw *pw)
+{
+ extern userdom_struct current_user_info;
+ fstring output_username;
+ pstring homedir;
+ fstring sid_string;
+
+ if (!pw || !dom_name || !user_name)
+ return False;
+
+ /* Resolve the uid number */
+
+ if (!winbindd_idmap_get_uid_from_sid(user_sid,
+ &pw->pw_uid)) {
+ DEBUG(1, ("error getting user id for sid %s\n", sid_to_string(sid_string, user_sid)));
+ return False;
+ }
+
+ /* Resolve the gid number */
+
+ if (!winbindd_idmap_get_gid_from_sid(group_sid,
+ &pw->pw_gid)) {
+ DEBUG(1, ("error getting group id for sid %s\n", sid_to_string(sid_string, group_sid)));
+ return False;
+ }
+
+ /* Username */
+
+ fill_domain_username(output_username, dom_name, user_name);
+
+ safe_strcpy(pw->pw_name, output_username, sizeof(pw->pw_name) - 1);
+
+ /* Full name (gecos) */
+
+ safe_strcpy(pw->pw_gecos, full_name, sizeof(pw->pw_gecos) - 1);
+
+ /* Home directory and shell - use template config parameters. The
+ defaults are /tmp for the home directory and /bin/false for
+ shell. */
+
+ /* The substitution of %U and %D in the 'template homedir' is done
+ by lp_string() calling standard_sub_basic(). */
+
+ fstrcpy(current_user_info.smb_name, user_name);
+ sub_set_smb_name(user_name);
+ fstrcpy(current_user_info.domain, dom_name);
+
+ pstrcpy(homedir, lp_template_homedir());
+
+ safe_strcpy(pw->pw_dir, homedir, sizeof(pw->pw_dir) - 1);
+
+ safe_strcpy(pw->pw_shell, lp_template_shell(),
+ sizeof(pw->pw_shell) - 1);
+
+ /* Password - set to "x" as we can't generate anything useful here.
+ Authentication can be done using the pam_winbind module. */
+
+ safe_strcpy(pw->pw_passwd, "x", sizeof(pw->pw_passwd) - 1);
+
+ return True;
+}
+
+/* Return a password structure from a username. */
+
+enum winbindd_result winbindd_getpwnam(struct winbindd_cli_state *state)
+{
+ WINBIND_USERINFO user_info;
+ DOM_SID user_sid;
+ NTSTATUS status;
+ fstring name_domain, name_user;
+ enum SID_NAME_USE name_type;
+ struct winbindd_domain *domain;
+ TALLOC_CTX *mem_ctx;
+
+ /* Ensure null termination */
+ state->request.data.username[sizeof(state->request.data.username)-1]='\0';
+
+ DEBUG(3, ("[%5d]: getpwnam %s\n", state->pid,
+ state->request.data.username));
+
+ /* Parse domain and username */
+
+ if (!parse_domain_user(state->request.data.username, name_domain,
+ name_user))
+ return WINBINDD_ERROR;
+
+ if ((domain = find_domain_from_name(name_domain)) == NULL) {
+ DEBUG(5, ("no such domain: %s\n", name_domain));
+ return WINBINDD_ERROR;
+ }
+
+ /* Get rid and name type from name */
+
+ if (!winbindd_lookup_sid_by_name(domain, name_user, &user_sid, &name_type)) {
+ DEBUG(1, ("user '%s' does not exist\n", name_user));
+ return WINBINDD_ERROR;
+ }
+
+ if (name_type != SID_NAME_USER) {
+ DEBUG(1, ("name '%s' is not a user name: %d\n", name_user,
+ name_type));
+ return WINBINDD_ERROR;
+ }
+
+ /* Get some user info. Split the user rid from the sid obtained
+ from the winbind_lookup_by_name() call and use it in a
+ winbind_lookup_userinfo() */
+
+ if (!(mem_ctx = talloc_init("winbindd_getpwnam([%s]\\[%s])",
+ name_domain, name_user))) {
+ DEBUG(1, ("out of memory\n"));
+ return WINBINDD_ERROR;
+ }
+
+ status = domain->methods->query_user(domain, mem_ctx, &user_sid,
+ &user_info);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("error getting user info for user '[%s]\\[%s]'\n",
+ name_domain, name_user));
+ talloc_destroy(mem_ctx);
+ return WINBINDD_ERROR;
+ }
+
+ /* Now take all this information and fill in a passwd structure */
+ if (!winbindd_fill_pwent(name_domain, name_user,
+ user_info.user_sid, user_info.group_sid,
+ user_info.full_name,
+ &state->response.data.pw)) {
+ talloc_destroy(mem_ctx);
+ return WINBINDD_ERROR;
+ }
+
+ talloc_destroy(mem_ctx);
+
+ return WINBINDD_OK;
+}
+
+/* Return a password structure given a uid number */
+
+enum winbindd_result winbindd_getpwuid(struct winbindd_cli_state *state)
+{
+ DOM_SID user_sid;
+ struct winbindd_domain *domain;
+ fstring dom_name;
+ fstring user_name;
+ enum SID_NAME_USE name_type;
+ WINBIND_USERINFO user_info;
+ gid_t gid;
+ TALLOC_CTX *mem_ctx;
+ NTSTATUS status;
+
+ /* Bug out if the uid isn't in the winbind range */
+
+ if ((state->request.data.uid < server_state.uid_low ) ||
+ (state->request.data.uid > server_state.uid_high))
+ return WINBINDD_ERROR;
+
+ DEBUG(3, ("[%5d]: getpwuid %d\n", state->pid,
+ state->request.data.uid));
+
+ /* Get rid from uid */
+
+ if (!winbindd_idmap_get_sid_from_uid(state->request.data.uid,
+ &user_sid)) {
+ DEBUG(1, ("could not convert uid %d to SID\n",
+ state->request.data.uid));
+ return WINBINDD_ERROR;
+ }
+
+ /* Get name and name type from rid */
+
+ if (!winbindd_lookup_name_by_sid(&user_sid, dom_name, user_name, &name_type)) {
+ fstring temp;
+
+ sid_to_string(temp, &user_sid);
+ DEBUG(1, ("could not lookup sid %s\n", temp));
+ return WINBINDD_ERROR;
+ }
+
+ domain = find_domain_from_sid(&user_sid);
+
+ if (!domain) {
+ DEBUG(1,("Can't find domain from sid\n"));
+ return WINBINDD_ERROR;
+ }
+
+ /* Get some user info */
+
+ if (!(mem_ctx = talloc_init("winbind_getpwuid(%d)",
+ state->request.data.uid))) {
+
+ DEBUG(1, ("out of memory\n"));
+ return WINBINDD_ERROR;
+ }
+
+ status = domain->methods->query_user(domain, mem_ctx, &user_sid,
+ &user_info);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("error getting user info for user '%s'\n",
+ user_name));
+ talloc_destroy(mem_ctx);
+ return WINBINDD_ERROR;
+ }
+
+ /* Resolve gid number */
+
+ if (!winbindd_idmap_get_gid_from_sid(user_info.group_sid, &gid)) {
+ DEBUG(1, ("error getting group id for user %s\n", user_name));
+ talloc_destroy(mem_ctx);
+ return WINBINDD_ERROR;
+ }
+
+ /* Fill in password structure */
+
+ if (!winbindd_fill_pwent(domain->name, user_name, user_info.user_sid,
+ user_info.group_sid,
+ user_info.full_name, &state->response.data.pw)) {
+ talloc_destroy(mem_ctx);
+ return WINBINDD_ERROR;
+ }
+
+ talloc_destroy(mem_ctx);
+
+ return WINBINDD_OK;
+}
+
+/*
+ * set/get/endpwent functions
+ */
+
+/* Rewind file pointer for ntdom passwd database */
+
+enum winbindd_result winbindd_setpwent(struct winbindd_cli_state *state)
+{
+ struct winbindd_domain *domain;
+
+ DEBUG(3, ("[%5d]: setpwent\n", state->pid));
+
+ /* Check user has enabled this */
+
+ if (!lp_winbind_enum_users())
+ return WINBINDD_ERROR;
+
+ /* Free old static data if it exists */
+
+ if (state->getpwent_state != NULL) {
+ free_getent_state(state->getpwent_state);
+ state->getpwent_state = NULL;
+ }
+
+ /* Create sam pipes for each domain we know about */
+
+ for(domain = domain_list(); domain != NULL; domain = domain->next) {
+ struct getent_state *domain_state;
+
+ /* Create a state record for this domain */
+
+ if ((domain_state = (struct getent_state *)
+ malloc(sizeof(struct getent_state))) == NULL)
+ return WINBINDD_ERROR;
+
+ ZERO_STRUCTP(domain_state);
+
+ fstrcpy(domain_state->domain_name, domain->name);
+
+ /* Add to list of open domains */
+
+ DLIST_ADD(state->getpwent_state, domain_state);
+ }
+
+ return WINBINDD_OK;
+}
+
+/* Close file pointer to ntdom passwd database */
+
+enum winbindd_result winbindd_endpwent(struct winbindd_cli_state *state)
+{
+ DEBUG(3, ("[%5d]: endpwent\n", state->pid));
+
+ free_getent_state(state->getpwent_state);
+ state->getpwent_state = NULL;
+
+ return WINBINDD_OK;
+}
+
+/* Get partial list of domain users for a domain. We fill in the sam_entries,
+ and num_sam_entries fields with domain user information. The dispinfo_ndx
+ field is incremented to the index of the next user to fetch. Return True if
+ some users were returned, False otherwise. */
+
+#define MAX_FETCH_SAM_ENTRIES 100
+
+static BOOL get_sam_user_entries(struct getent_state *ent)
+{
+ NTSTATUS status;
+ uint32 num_entries;
+ WINBIND_USERINFO *info;
+ struct getpwent_user *name_list = NULL;
+ BOOL result = False;
+ TALLOC_CTX *mem_ctx;
+ struct winbindd_domain *domain;
+ struct winbindd_methods *methods;
+ unsigned int i;
+
+ if (ent->num_sam_entries)
+ return False;
+
+ if (!(mem_ctx = talloc_init("get_sam_user_entries(%s)",
+ ent->domain_name)))
+ return False;
+
+ if (!(domain = find_domain_from_name(ent->domain_name))) {
+ DEBUG(3, ("no such domain %s in get_sam_user_entries\n",
+ ent->domain_name));
+ return False;
+ }
+
+ methods = domain->methods;
+
+ /* Free any existing user info */
+
+ SAFE_FREE(ent->sam_entries);
+ ent->num_sam_entries = 0;
+
+ /* Call query_user_list to get a list of usernames and user rids */
+
+ num_entries = 0;
+
+ status = methods->query_user_list(domain, mem_ctx, &num_entries,
+ &info);
+
+ if (num_entries) {
+ struct getpwent_user *tnl;
+
+ tnl = (struct getpwent_user *)Realloc(name_list,
+ sizeof(struct getpwent_user) *
+ (ent->num_sam_entries +
+ num_entries));
+
+ if (!tnl) {
+ DEBUG(0,("get_sam_user_entries realloc failed.\n"));
+ SAFE_FREE(name_list);
+ goto done;
+ } else
+ name_list = tnl;
+ }
+
+ for (i = 0; i < num_entries; i++) {
+ /* Store account name and gecos */
+ if (!info[i].acct_name) {
+ fstrcpy(name_list[ent->num_sam_entries + i].name, "");
+ } else {
+ fstrcpy(name_list[ent->num_sam_entries + i].name,
+ info[i].acct_name);
+ }
+ if (!info[i].full_name) {
+ fstrcpy(name_list[ent->num_sam_entries + i].gecos, "");
+ } else {
+ fstrcpy(name_list[ent->num_sam_entries + i].gecos,
+ info[i].full_name);
+ }
+
+ /* User and group ids */
+ sid_copy(&name_list[ent->num_sam_entries+i].user_sid, info[i].user_sid);
+ sid_copy(&name_list[ent->num_sam_entries+i].group_sid, info[i].group_sid);
+ }
+
+ ent->num_sam_entries += num_entries;
+
+ /* Fill in remaining fields */
+
+ ent->sam_entries = name_list;
+ ent->sam_entry_index = 0;
+ result = ent->num_sam_entries > 0;
+
+ done:
+
+ talloc_destroy(mem_ctx);
+
+ return result;
+}
+
+/* Fetch next passwd entry from ntdom database */
+
+#define MAX_GETPWENT_USERS 500
+
+enum winbindd_result winbindd_getpwent(struct winbindd_cli_state *state)
+{
+ struct getent_state *ent;
+ struct winbindd_pw *user_list;
+ int num_users, user_list_ndx = 0, i;
+
+ DEBUG(3, ("[%5d]: getpwent\n", state->pid));
+
+ /* Check user has enabled this */
+
+ if (!lp_winbind_enum_users())
+ return WINBINDD_ERROR;
+
+ /* Allocate space for returning a chunk of users */
+
+ num_users = MIN(MAX_GETPWENT_USERS, state->request.data.num_entries);
+
+ if ((state->response.extra_data =
+ malloc(num_users * sizeof(struct winbindd_pw))) == NULL)
+ return WINBINDD_ERROR;
+
+ memset(state->response.extra_data, 0, num_users *
+ sizeof(struct winbindd_pw));
+
+ user_list = (struct winbindd_pw *)state->response.extra_data;
+
+ if (!(ent = state->getpwent_state))
+ return WINBINDD_ERROR;
+
+ /* Start sending back users */
+
+ for (i = 0; i < num_users; i++) {
+ struct getpwent_user *name_list = NULL;
+ fstring domain_user_name;
+ uint32 result;
+
+ /* Do we need to fetch another chunk of users? */
+
+ if (ent->num_sam_entries == ent->sam_entry_index) {
+
+ while(ent && !get_sam_user_entries(ent)) {
+ struct getent_state *next_ent;
+
+ /* Free state information for this domain */
+
+ SAFE_FREE(ent->sam_entries);
+
+ next_ent = ent->next;
+ DLIST_REMOVE(state->getpwent_state, ent);
+
+ SAFE_FREE(ent);
+ ent = next_ent;
+ }
+
+ /* No more domains */
+
+ if (!ent)
+ break;
+ }
+
+ name_list = ent->sam_entries;
+
+ /* Skip machine accounts */
+
+ if (name_list[ent->sam_entry_index].
+ name[strlen(name_list[ent->sam_entry_index].name) - 1]
+ == '$') {
+ ent->sam_entry_index++;
+ continue;
+ }
+
+ /* Lookup user info */
+
+ result = winbindd_fill_pwent(
+ ent->domain_name,
+ name_list[ent->sam_entry_index].name,
+ &name_list[ent->sam_entry_index].user_sid,
+ &name_list[ent->sam_entry_index].group_sid,
+ name_list[ent->sam_entry_index].gecos,
+ &user_list[user_list_ndx]);
+
+ ent->sam_entry_index++;
+
+ /* Add user to return list */
+
+ if (result) {
+
+ user_list_ndx++;
+ state->response.data.num_entries++;
+ state->response.length +=
+ sizeof(struct winbindd_pw);
+
+ } else
+ DEBUG(1, ("could not lookup domain user %s\n",
+ domain_user_name));
+ }
+
+ /* Out of domains */
+
+ return (user_list_ndx > 0) ? WINBINDD_OK : WINBINDD_ERROR;
+}
+
+/* List domain users without mapping to unix ids */
+
+enum winbindd_result winbindd_list_users(struct winbindd_cli_state *state)
+{
+ struct winbindd_domain *domain;
+ WINBIND_USERINFO *info;
+ uint32 num_entries = 0, total_entries = 0;
+ char *ted, *extra_data = NULL;
+ int extra_data_len = 0;
+ TALLOC_CTX *mem_ctx;
+ enum winbindd_result rv = WINBINDD_ERROR;
+
+ DEBUG(3, ("[%5d]: list users\n", state->pid));
+
+ if (!(mem_ctx = talloc_init("winbindd_list_users")))
+ return WINBINDD_ERROR;
+
+ /* Enumerate over trusted domains */
+
+ for (domain = domain_list(); domain; domain = domain->next) {
+ NTSTATUS status;
+ struct winbindd_methods *methods;
+ unsigned int i;
+
+ methods = domain->methods;
+
+ /* Query display info */
+ status = methods->query_user_list(domain, mem_ctx,
+ &num_entries, &info);
+
+ if (num_entries == 0)
+ continue;
+
+ /* Allocate some memory for extra data */
+ total_entries += num_entries;
+
+ ted = Realloc(extra_data, sizeof(fstring) * total_entries);
+
+ if (!ted) {
+ DEBUG(0,("failed to enlarge buffer!\n"));
+ SAFE_FREE(extra_data);
+ goto done;
+ } else
+ extra_data = ted;
+
+ /* Pack user list into extra data fields */
+
+ for (i = 0; i < num_entries; i++) {
+ fstring acct_name, name;
+
+ if (!info[i].acct_name) {
+ fstrcpy(acct_name, "");
+ } else {
+ fstrcpy(acct_name, info[i].acct_name);
+ }
+
+ fill_domain_username(name, domain->name, acct_name);
+
+ /* Append to extra data */
+ memcpy(&extra_data[extra_data_len], name,
+ strlen(name));
+ extra_data_len += strlen(name);
+ extra_data[extra_data_len++] = ',';
+ }
+ }
+
+ /* Assign extra_data fields in response structure */
+
+ if (extra_data) {
+ extra_data[extra_data_len - 1] = '\0';
+ state->response.extra_data = extra_data;
+ state->response.length += extra_data_len;
+ }
+
+ /* No domains responded but that's still OK so don't return an
+ error. */
+
+ rv = WINBINDD_OK;
+
+ done:
+
+ talloc_destroy(mem_ctx);
+
+ return rv;
+}
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