-/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
#include <pwd.h>
#include <errno.h>
#include <ctype.h>
+#include <fcntl.h>
#include <netdb.h>
#include <string.h>
-#include <libc-lock.h>
+#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include <rpcsvc/nis.h>
-#include <rpcsvc/nislib.h>
#include <nsswitch.h>
#include "netgroup.h"
#include "nss-nisplus.h"
+#include "nisplus-parser.h"
static service_user *ni = NULL;
static bool_t use_nisplus = FALSE; /* default: passwd_compat: nis */
+static nis_name pwdtable = NULL; /* Name of the pwd table */
+static size_t pwdtablelen = 0;
/* Get the declaration of the parser function. */
#define ENTNAME pwent
#define STRUCTURE passwd
#define EXTERN_PARSER
-#include "../../nss/nss_files/files-parse.c"
+#include <nss/nss_files/files-parse.c>
/* Structure for remembering -@netgroup and -user members ... */
#define BLACKLIST_INITIAL_SIZE 512
char *oldkey;
int oldkeylen;
nis_result *result;
- nis_name *names;
- u_long names_nr;
FILE *stream;
struct blacklist_t blacklist;
struct passwd pwd;
};
typedef struct ent_t ent_t;
-static ent_t ext_ent = {0, 0, 0, NULL, 0, NULL, NULL, 0, NULL, {NULL, 0, 0},
+static ent_t ext_ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0},
{NULL, NULL, 0, 0, NULL, NULL, NULL}};
/* Protect global state against multiple changers. */
/* Prototypes for local functions. */
static void blacklist_store_name (const char *, ent_t *);
static int in_blacklist (const char *, int, ent_t *);
-extern int _nss_nisplus_parse_pwent (nis_result *, struct passwd *,
- char *, size_t);
+
static void
give_pwd_free (struct passwd *pwd)
{
ent->result = NULL;
}
- if (ent->names != NULL)
+ if (pwdtable == NULL)
{
- nis_freenames (ent->names);
- ent->names = NULL;
+ static const char key[] = "passwd.org_dir.";
+ const char *local_dir = nis_local_directory ();
+ size_t len_local_dir = strlen (local_dir);
+
+ pwdtable = malloc (sizeof (key) + len_local_dir);
+ if (pwdtable == NULL)
+ return NSS_STATUS_TRYAGAIN;
+
+ pwdtablelen = ((char *) mempcpy (mempcpy (pwdtable,
+ key, sizeof (key) - 1),
+ local_dir, len_local_dir + 1)
+ - pwdtable) - 1;
}
- ent->names_nr = 0;
- ent->blacklist.current = 0;
+
if (ent->blacklist.data != NULL)
- ent->blacklist.data[0] = '\0';
+ {
+ ent->blacklist.current = 1;
+ ent->blacklist.data[0] = '|';
+ ent->blacklist.data[1] = '\0';
+ }
+ else
+ ent->blacklist.current = 0;
if (ent->stream == NULL)
{
if (ent->stream == NULL)
status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
+ else
+ {
+ /* We have to make sure the file is `closed on exec'. */
+ int result, flags;
+
+ result = flags = fcntl (fileno (ent->stream), F_GETFD, 0);
+ if (result >= 0)
+ {
+ flags |= FD_CLOEXEC;
+ result = fcntl (fileno (ent->stream), F_SETFD, flags);
+ }
+ if (result < 0)
+ {
+ /* Something went wrong. Close the stream and return a
+ failure. */
+ fclose (ent->stream);
+ ent->stream = NULL;
+ status = NSS_STATUS_UNAVAIL;
+ }
+ }
}
else
rewind (ent->stream);
ent->stream = NULL;
}
+ if (ent->netgroup)
+ __internal_endnetgrent (&ent->netgrdata);
+
ent->nis = ent->first = ent->netgroup = 0;
if (ent->oldkey != NULL)
ent->result = NULL;
}
- if (ent->names != NULL)
+ if (ent->blacklist.data != NULL)
{
- nis_freenames (ent->names);
- ent->names = NULL;
+ ent->blacklist.current = 1;
+ ent->blacklist.data[0] = '|';
+ ent->blacklist.data[1] = '\0';
}
- ent->names_nr = 0;
-
- ent->blacklist.current = 0;
- if (ent->blacklist.data != NULL)
- ent->blacklist.data[0] = '\0';
+ else
+ ent->blacklist.current = 0;
give_pwd_free (&ent->pwd);
__libc_lock_lock (lock);
- if (ext_ent.netgroup)
- __internal_endnetgrent (&ext_ent.netgrdata);
-
result = internal_endpwent (&ext_ent);
__libc_lock_unlock (lock);
}
static enum nss_status
-getpwent_next_nis_netgr (struct passwd *result, ent_t *ent, char *group,
- char *buffer, size_t buflen)
+getpwent_next_nis_netgr (const char *name, struct passwd *result, ent_t *ent,
+ char *group, char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
char *ypdomain, *host, *user, *domain, *outval, *p, *p2;
int status, outvallen;
size_t p2len;
-
+
if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS)
{
ent->netgroup = 0;
if (ent->first == TRUE)
{
- bzero (&ent->netgrdata, sizeof (struct __netgrent));
+ memset (&ent->netgrdata, 0, sizeof (struct __netgrent));
__internal_setnetgrent (group, &ent->netgrdata);
ent->first = FALSE;
}
while (1)
{
+ char *saved_cursor;
+ int parse_res;
+
+ saved_cursor = ent->netgrdata.cursor;
status = __internal_getnetgrent_r (&host, &user, &domain,
- &ent->netgrdata, buffer, buflen);
+ &ent->netgrdata, buffer, buflen,
+ errnop);
if (status != 1)
{
__internal_endnetgrent (&ent->netgrdata);
if (domain != NULL && strcmp (ypdomain, domain) != 0)
continue;
+ /* If name != NULL, we are called from getpwnam. */
+ if (name != NULL)
+ if (strcmp (user, name) != 0)
+ continue;
+
if (yp_match (ypdomain, "passwd.byname", user,
strlen (user), &outval, &outvallen)
!= YPERR_SUCCESS)
p2len = pwd_need_buflen (&ent->pwd);
if (p2len > buflen)
{
- __set_errno (ERANGE);
+ free (outval);
+ *errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p2 = buffer + (buflen - p2len);
buflen -= p2len;
+
+ if (buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
p = strncpy (buffer, outval, buflen);
+
while (isspace (*p))
p++;
free (outval);
- if (_nss_files_parse_pwent (p, result, data, buflen))
+ parse_res = _nss_files_parse_pwent (p, result, data, buflen, errnop);
+ if (parse_res == -1)
+ {
+ ent->netgrdata.cursor = saved_cursor;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ if (parse_res)
{
+ /* Store the User in the blacklist for the "+" at the end of
+ /etc/passwd */
+ blacklist_store_name (result->pw_name, ent);
copy_pwd_changes (result, &ent->pwd, p2, p2len);
break;
}
}
static enum nss_status
-getpwent_next_nisplus_netgr (struct passwd *result, ent_t *ent, char *group,
- char *buffer, size_t buflen)
+getpwent_next_nisplus_netgr (const char *name, struct passwd *result,
+ ent_t *ent, char *group, char *buffer,
+ size_t buflen, int *errnop)
{
char *ypdomain, *host, *user, *domain, *p2;
int status, parse_res;
size_t p2len;
nis_result *nisres;
-
- /* Maybe we should use domainname here ? We need the current
+
+ /* Maybe we should use domainname here ? We need the current
domainname for the domain field in netgroups */
if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS)
{
while (1)
{
+ char *saved_cursor;
+
+ saved_cursor = ent->netgrdata.cursor;
status = __internal_getnetgrent_r (&host, &user, &domain,
- &ent->netgrdata, buffer, buflen);
+ &ent->netgrdata, buffer, buflen,
+ errnop);
if (status != 1)
{
__internal_endnetgrent (&ent->netgrdata);
if (domain != NULL && strcmp (ypdomain, domain) != 0)
continue;
+ /* If name != NULL, we are called from getpwnam */
+ if (name != NULL)
+ if (strcmp (user, name) != 0)
+ continue;
+
p2len = pwd_need_buflen (&ent->pwd);
if (p2len > buflen)
{
- __set_errno (ERANGE);
+ *errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p2 = buffer + (buflen - p2len);
buflen -= p2len;
- {
- char buf[strlen (user) + 30];
- sprintf(buf, "[name=%s],passwd.org_dir", user);
- nisres = nis_list(buf, EXPAND_NAME, NULL, NULL);
+ {
+ char buf[strlen (user) + 30 + pwdtablelen];
+ sprintf(buf, "[name=%s],%s", user, pwdtable);
+ nisres = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
}
if (niserr2nss (nisres->status) != NSS_STATUS_SUCCESS)
{
nis_freeresult (nisres);
continue;
}
- parse_res = _nss_nisplus_parse_pwent (nisres, result, buffer, buflen);
+ parse_res = _nss_nisplus_parse_pwent (nisres, result, buffer,
+ buflen, errnop);
+ if (parse_res == -1)
+ {
+ nis_freeresult (nisres);
+ ent->netgrdata.cursor = saved_cursor;
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
nis_freeresult (nisres);
-
+
if (parse_res)
{
+ /* Store the User in the blacklist for the "+" at the end of
+ /etc/passwd */
+ blacklist_store_name (result->pw_name, ent);
copy_pwd_changes (result, &ent->pwd, p2, p2len);
break;
}
return NSS_STATUS_SUCCESS;
}
-static enum nss_status
-getpwent_next_netgr (struct passwd *result, ent_t *ent, char *group,
- char *buffer, size_t buflen)
-{
- if (use_nisplus)
- return getpwent_next_nisplus_netgr (result, ent, group, buffer, buflen);
- else
- return getpwent_next_nis_netgr (result, ent, group, buffer, buflen);
-}
-
+/* get the next user from NIS+ (+ entry) */
static enum nss_status
getpwent_next_nisplus (struct passwd *result, ent_t *ent, char *buffer,
- size_t buflen)
+ size_t buflen, int *errnop)
{
int parse_res;
size_t p2len;
char *p2;
- if (ent->names == NULL)
- {
- ent->names = nis_getnames ("passwd.org_dir");
- if (ent->names == NULL || ent->names[0] == NULL)
- {
- ent->nis = 0;
- return NSS_STATUS_UNAVAIL;
- }
- }
-
p2len = pwd_need_buflen (&ent->pwd);
if (p2len > buflen)
{
- __set_errno (ERANGE);
+ *errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p2 = buffer + (buflen - p2len);
buflen -= p2len;
do
{
+ bool_t saved_first;
+ nis_result *saved_res;
+
if (ent->first)
{
- next_name:
- ent->result = nis_first_entry(ent->names[ent->names_nr]);
+ saved_first = TRUE;
+ saved_res = ent->result;
+
+ ent->result = nis_first_entry (pwdtable);
if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
{
ent->nis = 0;
else
{
nis_result *res;
-
- res = nis_next_entry(ent->names[ent->names_nr],
- &ent->result->cookie);
- nis_freeresult (ent->result);
+
+ res = nis_next_entry (pwdtable, &ent->result->cookie);
+ saved_res = ent->result;
+ saved_first = FALSE;
ent->result = res;
if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
{
- if ((ent->result->status == NIS_NOTFOUND) &&
- ent->names[ent->names_nr + 1] != NULL)
- {
- nis_freeresult (ent->result);
- ent->names_nr += 1;
- goto next_name;
- }
- else
- {
- ent->nis = 0;
- give_pwd_free (&ent->pwd);
- return niserr2nss (ent->result->status);
- }
+ ent->nis = 0;
+ nis_freeresult (saved_res);
+ give_pwd_free (&ent->pwd);
+ return niserr2nss (ent->result->status);
}
}
- parse_res = _nss_nisplus_parse_pwent (ent->result, result, buffer,
- buflen);
- if (parse_res &&
+ parse_res = _nss_nisplus_parse_pwent (ent->result, result, buffer,
+ buflen, errnop);
+ if (parse_res == -1)
+ {
+ nis_freeresult (ent->result);
+ ent->result = saved_res;
+ ent->first = saved_first;
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ if (!saved_first)
+ nis_freeresult (saved_res);
+ }
+
+ if (parse_res &&
in_blacklist (result->pw_name, strlen (result->pw_name), ent))
parse_res = 0; /* if result->pw_name in blacklist,search next entry */
}
while (!parse_res);
-
+
copy_pwd_changes (result, &ent->pwd, p2, p2len);
-
+
return NSS_STATUS_SUCCESS;
}
static enum nss_status
getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer,
- size_t buflen)
+ size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
char *domain, *outkey, *outval, *p, *p2;
p2len = pwd_need_buflen (&ent->pwd);
if (p2len > buflen)
{
- __set_errno (ERANGE);
+ *errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p2 = buffer + (buflen - p2len);
buflen -= p2len;
do
{
+ bool_t saved_first;
+ char *saved_oldkey;
+ int saved_oldlen;
+
if (ent->first)
{
if (yp_first (domain, "passwd.byname", &outkey, &outkeylen,
return NSS_STATUS_UNAVAIL;
}
+ if (buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ saved_first = TRUE;
+ saved_oldkey = ent->oldkey;
+ saved_oldlen = ent->oldkeylen;
ent->oldkey = outkey;
ent->oldkeylen = outkeylen;
ent->first = FALSE;
{
ent->nis = 0;
give_pwd_free (&ent->pwd);
+ *errnop = ENOENT;
return NSS_STATUS_NOTFOUND;
}
- free (ent->oldkey);
+ if (buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ saved_first = FALSE;
+ saved_oldkey = ent->oldkey;
+ saved_oldlen = ent->oldkeylen;
ent->oldkey = outkey;
ent->oldkeylen = outkeylen;
}
while (isspace (*p))
++p;
- parse_res = _nss_files_parse_pwent (p, result, data, buflen);
- if (parse_res &&
- in_blacklist (result->pw_name, strlen (result->pw_name), ent))
+ parse_res = _nss_files_parse_pwent (p, result, data, buflen, errnop);
+ if (parse_res == -1)
+ {
+ free (ent->oldkey);
+ ent->oldkey = saved_oldkey;
+ ent->oldkeylen = saved_oldlen;
+ ent->first = saved_first;
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ if (!saved_first)
+ free (saved_oldkey);
+ }
+ if (parse_res
+ && in_blacklist (result->pw_name, strlen (result->pw_name), ent))
parse_res = 0;
}
while (!parse_res);
/* This function handle the +user entrys in /etc/passwd */
static enum nss_status
-getpwent_next_file_plususer (struct passwd *result, char *buffer,
- size_t buflen)
+getpwnam_plususer (const char *name, struct passwd *result, char *buffer,
+ size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
struct passwd pwd;
int parse_res;
char *p;
size_t plen;
-
+
memset (&pwd, '\0', sizeof (struct passwd));
-
+
copy_pwd_changes (&pwd, result, NULL, 0);
-
+
plen = pwd_need_buflen (&pwd);
if (plen > buflen)
{
- __set_errno (ERANGE);
+ *errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p = buffer + (buflen - plen);
buflen -= plen;
-
+
if (use_nisplus) /* Do the NIS+ query here */
{
nis_result *res;
- char buf[strlen (result->pw_name) + 24];
-
- sprintf(buf, "[name=%s],passwd.org_dir",
- &result->pw_name[1]);
- res = nis_list(buf, EXPAND_NAME, NULL, NULL);
+ char buf[strlen (name) + 24 + pwdtablelen];
+
+ sprintf(buf, "[name=%s],%s", name, pwdtable);
+ res = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
if (niserr2nss (res->status) != NSS_STATUS_SUCCESS)
{
enum nss_status status = niserr2nss (res->status);
-
+
nis_freeresult (res);
return status;
}
- parse_res = _nss_nisplus_parse_pwent (res, result, buffer, buflen);
+ parse_res = _nss_nisplus_parse_pwent (res, result, buffer,
+ buflen, errnop);
+ if (parse_res == -1)
+ {
+ nis_freeresult (res);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
nis_freeresult (res);
}
else /* Use NIS */
{
- char *domain;
- char *outval;
+ char *domain, *outval, *ptr;
int outvallen;
-
+
if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
- return NSS_STATUS_TRYAGAIN;
-
- if (yp_match (domain, "passwd.byname", &result->pw_name[1],
- strlen (result->pw_name) - 1, &outval, &outvallen)
- != YPERR_SUCCESS)
- return NSS_STATUS_TRYAGAIN;
- p = strncpy (buffer, outval,
- buflen < outvallen ? buflen : outvallen);
+ return NSS_STATUS_NOTFOUND;
+
+ if (yp_match (domain, "passwd.byname", name, strlen (name),
+ &outval, &outvallen) != YPERR_SUCCESS)
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
+
+ if (buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ ptr = strncpy (buffer, outval, buflen);
free (outval);
- while (isspace (*p))
- p++;
- parse_res = _nss_files_parse_pwent (p, result, data, buflen);
+ while (isspace (*ptr))
+ ptr++;
+ parse_res = _nss_files_parse_pwent (ptr, result, data, buflen, errnop);
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
}
-
- if (parse_res)
+
+ if (parse_res > 0)
{
copy_pwd_changes (result, &pwd, p, plen);
give_pwd_free (&pwd);
static enum nss_status
getpwent_next_file (struct passwd *result, ent_t *ent,
- char *buffer, size_t buflen)
+ char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
while (1)
{
+ fpos_t pos;
char *p;
+ int parse_res;
do
{
+ fgetpos (ent->stream, &pos);
+ buffer[buflen - 1] = '\xff';
p = fgets (buffer, buflen, ent->stream);
- if (p == NULL)
- return NSS_STATUS_NOTFOUND;
+ if (p == NULL && feof (ent->stream))
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
+ if (p == NULL || buffer[buflen - 1] != '\xff')
+ {
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
/* Terminate the line for any case. */
buffer[buflen - 1] = '\0';
while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
/* Parse the line. If it is invalid, loop to
get the next line of the file to parse. */
- !_nss_files_parse_pwent (p, result, data, buflen));
+ !(parse_res = _nss_files_parse_pwent (p, result, data, buflen,
+ errnop)));
+
+ if (parse_res == -1)
+ {
+ /* The parser ran out of space. */
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
/* This is a real entry. */
if (result->pw_name[0] == '-' && result->pw_name[1] == '@'
&& result->pw_name[2] != '\0')
{
+ /* XXX Do not use fixed length buffer. */
+ char buf2[1024];
char *user, *host, *domain;
+ struct __netgrent netgrdata;
- setnetgrent (&result->pw_name[2]);
- while (getnetgrent (&host, &user, &domain))
+ bzero (&netgrdata, sizeof (struct __netgrent));
+ __internal_setnetgrent (&result->pw_name[2], &netgrdata);
+ while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata,
+ buf2, sizeof (buf2), errnop))
{
if (user != NULL && user[0] != '-')
blacklist_store_name (user, ent);
}
- endnetgrent ();
+ __internal_endnetgrent (&netgrdata);
continue;
}
ent->first = TRUE;
copy_pwd_changes (&ent->pwd, result, NULL, 0);
- status = getpwent_next_netgr (result, ent, &result->pw_name[2],
- buffer, buflen);
+ if (use_nisplus)
+ status = getpwent_next_nisplus_netgr (NULL, result, ent,
+ &result->pw_name[2],
+ buffer, buflen, errnop);
+ else
+ status = getpwent_next_nis_netgr (NULL, result, ent,
+ &result->pw_name[2],
+ buffer, buflen, errnop);
if (status == NSS_STATUS_RETURN)
continue;
else
- return status;
+ {
+ if (status == NSS_STATUS_NOTFOUND)
+ *errnop = ENOENT;
+ return status;
+ }
}
/* -user */
&& result->pw_name[1] != '@')
{
enum nss_status status;
-
- status = getpwent_next_file_plususer (result, buffer, buflen);
+
+ /* Store the User in the blacklist for the "+" at the end of
+ /etc/passwd */
+ blacklist_store_name (&result->pw_name[1], ent);
+ status = getpwnam_plususer (&result->pw_name[1], result, buffer,
+ buflen, errnop);
if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
break;
else
- if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
+ if (status == NSS_STATUS_RETURN /* We couldn't parse the entry */
+ || status == NSS_STATUS_NOTFOUND) /* entry doesn't exist */
continue;
else
- return status;
+ {
+ if (status == NSS_STATUS_TRYAGAIN)
+ {
+ /* The parser ran out of space */
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ }
+ return status;
+ }
}
/* +:... */
copy_pwd_changes (&ent->pwd, result, NULL, 0);
if (use_nisplus)
- return getpwent_next_nisplus (result, ent, buffer, buflen);
+ return getpwent_next_nisplus (result, ent, buffer, buflen, errnop);
else
- return getpwent_next_nis (result, ent, buffer, buflen);
+ return getpwent_next_nis (result, ent, buffer, buflen, errnop);
}
}
static enum nss_status
internal_getpwent_r (struct passwd *pw, ent_t *ent, char *buffer,
- size_t buflen)
+ size_t buflen, int *errnop)
{
if (ent->netgroup)
{
/* We are searching members in a netgroup */
/* Since this is not the first call, we don't need the group name */
- status = getpwent_next_netgr (pw, ent, NULL, buffer, buflen);
+ if (use_nisplus)
+ status = getpwent_next_nisplus_netgr (NULL, pw, ent, NULL, buffer,
+ buflen, errnop);
+ else
+ status = getpwent_next_nis_netgr (NULL, pw, ent, NULL, buffer, buflen,
+ errnop);
if (status == NSS_STATUS_RETURN)
- return getpwent_next_file (pw, ent, buffer, buflen);
+ return getpwent_next_file (pw, ent, buffer, buflen, errnop);
else
return status;
}
- else if (ent->nis)
- {
- if (use_nisplus)
- return getpwent_next_nisplus (pw, ent, buffer, buflen);
- else
- return getpwent_next_nis (pw, ent, buffer, buflen);
- }
else
- return getpwent_next_file (pw, ent, buffer, buflen);
+ if (ent->nis)
+ {
+ if (use_nisplus)
+ return getpwent_next_nisplus (pw, ent, buffer, buflen, errnop);
+ else
+ return getpwent_next_nis (pw, ent, buffer, buflen, errnop);
+ }
+ else
+ return getpwent_next_file (pw, ent, buffer, buflen, errnop);
}
enum nss_status
-_nss_compat_getpwent_r (struct passwd *pwd, char *buffer,
- size_t buflen)
+_nss_compat_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
+ int *errnop)
{
enum nss_status status = NSS_STATUS_SUCCESS;
status = internal_setpwent (&ext_ent);
if (status == NSS_STATUS_SUCCESS)
- status = internal_getpwent_r (pwd, &ext_ent, buffer, buflen);
+ status = internal_getpwent_r (pwd, &ext_ent, buffer, buflen, errnop);
__libc_lock_unlock (lock);
return status;
}
+/* Searches in /etc/passwd and the NIS/NIS+ map for a special user */
+static enum nss_status
+internal_getpwnam_r (const char *name, struct passwd *result, ent_t *ent,
+ char *buffer, size_t buflen, int *errnop)
+{
+ struct parser_data *data = (void *) buffer;
+
+ while (1)
+ {
+ fpos_t pos;
+ char *p;
+ int parse_res;
+
+ do
+ {
+ fgetpos (ent->stream, &pos);
+ buffer[buflen - 1] = '\xff';
+ p = fgets (buffer, buflen, ent->stream);
+ if (p == NULL && feof (ent->stream))
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
+ if (p == NULL || buffer[buflen - 1] != '\xff')
+ {
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* Terminate the line for any case. */
+ buffer[buflen - 1] = '\0';
+
+ /* Skip leading blanks. */
+ while (isspace (*p))
+ ++p;
+ }
+ while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
+ /* Parse the line. If it is invalid, loop to
+ get the next line of the file to parse. */
+ !(parse_res = _nss_files_parse_pwent (p, result, data, buflen,
+ errnop)));
+
+ if (parse_res == -1)
+ {
+ /* The parser ran out of space. */
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* This is a real entry. */
+ if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
+ {
+ if (strcmp (result->pw_name, name) == 0)
+ return NSS_STATUS_SUCCESS;
+ else
+ continue;
+ }
+
+ /* -@netgroup */
+ if (result->pw_name[0] == '-' && result->pw_name[1] == '@'
+ && result->pw_name[2] != '\0')
+ {
+ /* XXX Do not use fixed length buffers. */
+ char buf2[1024];
+ char *user, *host, *domain;
+ struct __netgrent netgrdata;
+
+ bzero (&netgrdata, sizeof (struct __netgrent));
+ __internal_setnetgrent (&result->pw_name[2], &netgrdata);
+ while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata,
+ buf2, sizeof (buf2), errnop))
+ {
+ if (user != NULL && user[0] != '-')
+ if (strcmp (user, name) == 0)
+ return NSS_STATUS_NOTFOUND;
+ }
+ __internal_endnetgrent (&netgrdata);
+ continue;
+ }
+
+ /* +@netgroup */
+ if (result->pw_name[0] == '+' && result->pw_name[1] == '@'
+ && result->pw_name[2] != '\0')
+ {
+ char buf[strlen (result->pw_name)];
+ int status;
+
+ strcpy (buf, &result->pw_name[2]);
+ ent->netgroup = TRUE;
+ ent->first = TRUE;
+ copy_pwd_changes (&ent->pwd, result, NULL, 0);
+
+ do
+ {
+ if (use_nisplus)
+ status = getpwent_next_nisplus_netgr (name, result, ent, buf,
+ buffer, buflen, errnop);
+ else
+ status = getpwent_next_nis_netgr (name, result, ent, buf,
+ buffer, buflen, errnop);
+ if (status == NSS_STATUS_RETURN)
+ continue;
+
+ if (status == NSS_STATUS_SUCCESS &&
+ strcmp (result->pw_name, name) == 0)
+ return NSS_STATUS_SUCCESS;
+ } while (status == NSS_STATUS_SUCCESS);
+ continue;
+ }
+
+ /* -user */
+ if (result->pw_name[0] == '-' && result->pw_name[1] != '\0'
+ && result->pw_name[1] != '@')
+ {
+ if (strcmp (&result->pw_name[1], name) == 0)
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
+ else
+ continue;
+ }
+
+ /* +user */
+ if (result->pw_name[0] == '+' && result->pw_name[1] != '\0'
+ && result->pw_name[1] != '@')
+ {
+ if (strcmp (name, &result->pw_name[1]) == 0)
+ {
+ enum nss_status status;
+
+ status = getpwnam_plususer (name, result, buffer, buflen,
+ errnop);
+ if (status == NSS_STATUS_RETURN)
+ /* We couldn't parse the entry */
+ return NSS_STATUS_NOTFOUND;
+ else
+ return status;
+ }
+ }
+
+ /* +:... */
+ if (result->pw_name[0] == '+' && result->pw_name[1] == '\0')
+ {
+ enum nss_status status;
+
+ status = getpwnam_plususer (name, result, buffer, buflen, errnop);
+ if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
+ break;
+ else
+ if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
+ return NSS_STATUS_NOTFOUND;
+ else
+ return status;
+ }
+ }
+ return NSS_STATUS_SUCCESS;
+}
enum nss_status
_nss_compat_getpwnam_r (const char *name, struct passwd *pwd,
- char *buffer, size_t buflen)
+ char *buffer, size_t buflen, int *errnop)
{
- ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, 0, NULL, {NULL, 0, 0},
+ ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0},
{NULL, NULL, 0, 0, NULL, NULL, NULL}};
enum nss_status status;
if (name[0] == '-' || name[0] == '+')
- return NSS_STATUS_NOTFOUND;
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
__libc_lock_lock (lock);
__nss_database_lookup ("passwd_compat", NULL, "nis", &ni);
use_nisplus = (strcmp (ni->name, "nisplus") == 0);
}
-
+
__libc_lock_unlock (lock);
status = internal_setpwent (&ent);
if (status != NSS_STATUS_SUCCESS)
return status;
- while ((status = internal_getpwent_r (pwd, &ent, buffer, buflen))
- == NSS_STATUS_SUCCESS)
- if (strcmp (pwd->pw_name, name) == 0)
- break;
+ status = internal_getpwnam_r (name, pwd, &ent, buffer, buflen, errnop);
internal_endpwent (&ent);
+
return status;
}
+/* This function handle the + entry in /etc/passwd for getpwuid */
+static enum nss_status
+getpwuid_plususer (uid_t uid, struct passwd *result, char *buffer,
+ size_t buflen, int *errnop)
+{
+ struct parser_data *data = (void *) buffer;
+ struct passwd pwd;
+ int parse_res;
+ char *p;
+ size_t plen;
+
+ memset (&pwd, '\0', sizeof (struct passwd));
+
+ copy_pwd_changes (&pwd, result, NULL, 0);
+
+ plen = pwd_need_buflen (&pwd);
+ if (plen > buflen)
+ {
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ p = buffer + (buflen - plen);
+ buflen -= plen;
+
+ if (use_nisplus) /* Do the NIS+ query here */
+ {
+ nis_result *res;
+ char buf[1024 + pwdtablelen];
+
+ snprintf(buf, sizeof (buf), "[uid=%d],%s", uid, pwdtable);
+ res = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
+ if (niserr2nss (res->status) != NSS_STATUS_SUCCESS)
+ {
+ enum nss_status status = niserr2nss (res->status);
+
+ nis_freeresult (res);
+ return status;
+ }
+ if ((parse_res = _nss_nisplus_parse_pwent (res, result, buffer,
+ buflen, errnop)) == -1)
+ {
+ nis_freeresult (res);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ nis_freeresult (res);
+ }
+ else /* Use NIS */
+ {
+ char buf[1024];
+ char *domain, *outval, *ptr;
+ int outvallen;
+
+ if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
+ {
+ *errnop = errno;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ sprintf (buf, "%d", uid);
+ if (yp_match (domain, "passwd.byuid", buf, strlen (buf),
+ &outval, &outvallen)
+ != YPERR_SUCCESS)
+ {
+ *errnop = errno;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ if ( buflen < ((size_t) outvallen + 1))
+ {
+ free (outval);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ ptr = strncpy (buffer, outval, buflen);
+ free (outval);
+
+ while (isspace (*ptr))
+ ptr++;
+ parse_res = _nss_files_parse_pwent (ptr, result, data, buflen, errnop);
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ if (parse_res > 0)
+ {
+ copy_pwd_changes (result, &pwd, p, plen);
+ give_pwd_free (&pwd);
+ /* We found the entry. */
+ return NSS_STATUS_SUCCESS;
+ }
+ else
+ {
+ /* Give buffer the old len back */
+ buflen += plen;
+ give_pwd_free (&pwd);
+ }
+ return NSS_STATUS_RETURN;
+}
+
+/* Searches in /etc/passwd and the NIS/NIS+ map for a special user id */
+static enum nss_status
+internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent,
+ char *buffer, size_t buflen, int *errnop)
+{
+ struct parser_data *data = (void *) buffer;
+
+ while (1)
+ {
+ fpos_t pos;
+ char *p;
+ int parse_res;
+
+ do
+ {
+ fgetpos (ent->stream, &pos);
+ buffer[buflen - 1] = '\xff';
+ p = fgets (buffer, buflen, ent->stream);
+ if (p == NULL && feof (ent->stream))
+ return NSS_STATUS_NOTFOUND;
+ if (p == NULL || buffer[buflen - 1] != '\xff')
+ {
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* Terminate the line for any case. */
+ buffer[buflen - 1] = '\0';
+
+ /* Skip leading blanks. */
+ while (isspace (*p))
+ ++p;
+ }
+ while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
+ /* Parse the line. If it is invalid, loop to
+ get the next line of the file to parse. */
+ !(parse_res = _nss_files_parse_pwent (p, result, data, buflen,
+ errnop)));
+
+ if (parse_res == -1)
+ {
+ /* The parser ran out of space. */
+ fsetpos (ent->stream, &pos);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* This is a real entry. */
+ if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
+ {
+ if (result->pw_uid == uid)
+ return NSS_STATUS_SUCCESS;
+ else
+ continue;
+ }
+
+ /* -@netgroup */
+ if (result->pw_name[0] == '-' && result->pw_name[1] == '@'
+ && result->pw_name[2] != '\0')
+ {
+ /* XXX Do not use fixed length buffers. */
+ char buf2[1024];
+ char *user, *host, *domain;
+ struct __netgrent netgrdata;
+
+ bzero (&netgrdata, sizeof (struct __netgrent));
+ __internal_setnetgrent (&result->pw_name[2], &netgrdata);
+ while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata,
+ buf2, sizeof (buf2), errnop))
+ {
+ if (user != NULL && user[0] != '-')
+ blacklist_store_name (user, ent);
+ }
+ __internal_endnetgrent (&netgrdata);
+ continue;
+ }
+
+ /* +@netgroup */
+ if (result->pw_name[0] == '+' && result->pw_name[1] == '@'
+ && result->pw_name[2] != '\0')
+ {
+ char buf[strlen (result->pw_name)];
+ int status;
+
+ strcpy (buf, &result->pw_name[2]);
+ ent->netgroup = TRUE;
+ ent->first = TRUE;
+ copy_pwd_changes (&ent->pwd, result, NULL, 0);
+
+ do
+ {
+ if (use_nisplus)
+ status = getpwent_next_nisplus_netgr (NULL, result, ent, buf,
+ buffer, buflen, errnop);
+ else
+ status = getpwent_next_nis_netgr (NULL, result, ent, buf,
+ buffer, buflen, errnop);
+ if (status == NSS_STATUS_RETURN)
+ continue;
+
+ if (status == NSS_STATUS_SUCCESS && uid == result->pw_uid)
+ return NSS_STATUS_SUCCESS;
+ } while (status == NSS_STATUS_SUCCESS);
+ continue;
+ }
+
+ /* -user */
+ if (result->pw_name[0] == '-' && result->pw_name[1] != '\0'
+ && result->pw_name[1] != '@')
+ {
+ blacklist_store_name (&result->pw_name[1], ent);
+ continue;
+ }
+
+ /* +user */
+ if (result->pw_name[0] == '+' && result->pw_name[1] != '\0'
+ && result->pw_name[1] != '@')
+ {
+ enum nss_status status;
+
+ /* Store the User in the blacklist for the "+" at the end of
+ /etc/passwd */
+ blacklist_store_name (&result->pw_name[1], ent);
+ status = getpwnam_plususer (&result->pw_name[1], result, buffer,
+ buflen, errnop);
+ if (status == NSS_STATUS_SUCCESS && result->pw_uid == uid)
+ break;
+ else
+ continue;
+ }
+
+ /* +:... */
+ if (result->pw_name[0] == '+' && result->pw_name[1] == '\0')
+ {
+ enum nss_status status;
+
+ status = getpwuid_plususer (uid, result, buffer, buflen, errnop);
+ if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
+ break;
+ else
+ if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
+ return NSS_STATUS_NOTFOUND;
+ else
+ return status;
+ }
+ }
+ return NSS_STATUS_SUCCESS;
+}
enum nss_status
_nss_compat_getpwuid_r (uid_t uid, struct passwd *pwd,
- char *buffer, size_t buflen)
+ char *buffer, size_t buflen, int *errnop)
{
- ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, 0, NULL, {NULL, 0, 0},
+ ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0},
{NULL, NULL, 0, 0, NULL, NULL, NULL}};
enum nss_status status;
-
+
__libc_lock_lock (lock);
-
+
if (ni == NULL)
{
__nss_database_lookup ("passwd_compat", NULL, "nis", &ni);
use_nisplus = (strcmp (ni->name, "nisplus") == 0);
}
-
+
__libc_lock_unlock (lock);
-
+
status = internal_setpwent (&ent);
if (status != NSS_STATUS_SUCCESS)
return status;
- while ((status = internal_getpwent_r (pwd, &ent, buffer, buflen))
- == NSS_STATUS_SUCCESS)
- if (pwd->pw_uid == uid && pwd->pw_name[0] != '+' && pwd->pw_name[0] != '-')
- break;
+ status = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop);
internal_endpwent (&ent);
+
return status;
}
in_blacklist (const char *name, int namelen, ent_t *ent)
{
char buf[namelen + 3];
+ char *cp;
if (ent->blacklist.data == NULL)
return FALSE;
- stpcpy (stpcpy (stpcpy (buf, "|"), name), "|");
+ buf[0] = '|';
+ cp = stpcpy (&buf[1], name);
+ *cp++= '|';
+ *cp = '\0';
return strstr (ent->blacklist.data, buf) != NULL;
}
git://sourceware.org / glibc.git / blobdiff