1 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
27 #include <bits/libc-lock.h>
28 #include <rpcsvc/yp.h>
29 #include <rpcsvc/ypclnt.h>
30 #include <rpcsvc/nis.h>
34 #include "nss-nisplus.h"
35 #include "nisplus-parser.h"
37 static service_user *ni = NULL;
38 static bool_t use_nisplus = FALSE; /* default: passwd_compat: nis */
39 static nis_name pwdtable = NULL; /* Name of the pwd table */
40 static size_t pwdtablelen = 0;
42 /* Get the declaration of the parser function. */
44 #define STRUCTURE passwd
46 #include <nss/nss_files/files-parse.c>
48 /* Structure for remembering -@netgroup and -user members ... */
49 #define BLACKLIST_INITIAL_SIZE 512
50 #define BLACKLIST_INCREMENT 256
67 struct blacklist_t blacklist;
69 struct __netgrent netgrdata;
71 typedef struct ent_t ent_t;
73 static ent_t ext_ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0},
74 {NULL, NULL, 0, 0, NULL, NULL, NULL}};
76 /* Protect global state against multiple changers. */
77 __libc_lock_define_initialized (static, lock)
79 /* Prototypes for local functions. */
80 static void blacklist_store_name (const char *, ent_t *);
81 static int in_blacklist (const char *, int, ent_t *);
84 give_pwd_free (struct passwd *pwd)
86 if (pwd->pw_name != NULL)
88 if (pwd->pw_passwd != NULL)
89 free (pwd->pw_passwd);
90 if (pwd->pw_gecos != NULL)
92 if (pwd->pw_dir != NULL)
94 if (pwd->pw_shell != NULL)
97 memset (pwd, '\0', sizeof (struct passwd));
101 pwd_need_buflen (struct passwd *pwd)
105 if (pwd->pw_passwd != NULL)
106 len += strlen (pwd->pw_passwd) + 1;
108 if (pwd->pw_gecos != NULL)
109 len += strlen (pwd->pw_gecos) + 1;
111 if (pwd->pw_dir != NULL)
112 len += strlen (pwd->pw_dir) + 1;
114 if (pwd->pw_shell != NULL)
115 len += strlen (pwd->pw_shell) + 1;
121 copy_pwd_changes (struct passwd *dest, struct passwd *src,
122 char *buffer, size_t buflen)
124 if (src->pw_passwd != NULL && strlen (src->pw_passwd))
127 dest->pw_passwd = strdup (src->pw_passwd);
128 else if (dest->pw_passwd &&
129 strlen (dest->pw_passwd) >= strlen (src->pw_passwd))
130 strcpy (dest->pw_passwd, src->pw_passwd);
133 dest->pw_passwd = buffer;
134 strcpy (dest->pw_passwd, src->pw_passwd);
135 buffer += strlen (dest->pw_passwd) + 1;
136 buflen = buflen - (strlen (dest->pw_passwd) + 1);
140 if (src->pw_gecos != NULL && strlen (src->pw_gecos))
143 dest->pw_gecos = strdup (src->pw_gecos);
144 else if (dest->pw_gecos &&
145 strlen (dest->pw_gecos) >= strlen (src->pw_gecos))
146 strcpy (dest->pw_gecos, src->pw_gecos);
149 dest->pw_gecos = buffer;
150 strcpy (dest->pw_gecos, src->pw_gecos);
151 buffer += strlen (dest->pw_gecos) + 1;
152 buflen = buflen - (strlen (dest->pw_gecos) + 1);
155 if (src->pw_dir != NULL && strlen (src->pw_dir))
158 dest->pw_dir = strdup (src->pw_dir);
159 else if (dest->pw_dir &&
160 strlen (dest->pw_dir) >= strlen (src->pw_dir))
161 strcpy (dest->pw_dir, src->pw_dir);
164 dest->pw_dir = buffer;
165 strcpy (dest->pw_dir, src->pw_dir);
166 buffer += strlen (dest->pw_dir) + 1;
167 buflen = buflen - (strlen (dest->pw_dir) + 1);
171 if (src->pw_shell != NULL && strlen (src->pw_shell))
174 dest->pw_shell = strdup (src->pw_shell);
175 else if (dest->pw_shell &&
176 strlen (dest->pw_shell) >= strlen (src->pw_shell))
177 strcpy (dest->pw_shell, src->pw_shell);
180 dest->pw_shell = buffer;
181 strcpy (dest->pw_shell, src->pw_shell);
182 buffer += strlen (dest->pw_shell) + 1;
183 buflen = buflen - (strlen (dest->pw_shell) + 1);
188 static enum nss_status
189 internal_setpwent (ent_t *ent)
191 enum nss_status status = NSS_STATUS_SUCCESS;
193 ent->nis = ent->first = ent->netgroup = 0;
195 /* If something was left over free it. */
197 __internal_endnetgrent (&ent->netgrdata);
199 if (ent->oldkey != NULL)
206 if (ent->result != NULL)
208 nis_freeresult (ent->result);
212 if (pwdtable == NULL)
214 static const char key[] = "passwd.org_dir.";
215 const char *local_dir = nis_local_directory ();
216 size_t len_local_dir = strlen (local_dir);
218 pwdtable = malloc (sizeof (key) + len_local_dir);
219 if (pwdtable == NULL)
220 return NSS_STATUS_TRYAGAIN;
222 pwdtablelen = ((char *) mempcpy (mempcpy (pwdtable,
223 key, sizeof (key) - 1),
224 local_dir, len_local_dir + 1)
228 ent->blacklist.current = 0;
229 if (ent->blacklist.data != NULL)
230 ent->blacklist.data[0] = '\0';
232 if (ent->stream == NULL)
234 ent->stream = fopen ("/etc/passwd", "r");
236 if (ent->stream == NULL)
237 status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
240 /* We have to make sure the file is `closed on exec'. */
243 result = flags = fcntl (fileno (ent->stream), F_GETFD, 0);
247 result = fcntl (fileno (ent->stream), F_SETFD, flags);
251 /* Something went wrong. Close the stream and return a
253 fclose (ent->stream);
255 status = NSS_STATUS_UNAVAIL;
260 rewind (ent->stream);
262 give_pwd_free (&ent->pwd);
269 _nss_compat_setpwent (void)
271 enum nss_status result;
273 __libc_lock_lock (lock);
277 __nss_database_lookup ("passwd_compat", NULL, "nis", &ni);
278 use_nisplus = (strcmp (ni->name, "nisplus") == 0);
281 result = internal_setpwent (&ext_ent);
283 __libc_lock_unlock (lock);
289 static enum nss_status
290 internal_endpwent (ent_t *ent)
292 if (ent->stream != NULL)
294 fclose (ent->stream);
299 __internal_endnetgrent (&ent->netgrdata);
301 ent->nis = ent->first = ent->netgroup = 0;
303 if (ent->oldkey != NULL)
310 if (ent->result != NULL)
312 nis_freeresult (ent->result);
316 ent->blacklist.current = 0;
317 if (ent->blacklist.data != NULL)
318 ent->blacklist.data[0] = '\0';
320 give_pwd_free (&ent->pwd);
322 return NSS_STATUS_SUCCESS;
326 _nss_compat_endpwent (void)
328 enum nss_status result;
330 __libc_lock_lock (lock);
332 result = internal_endpwent (&ext_ent);
334 __libc_lock_unlock (lock);
339 static enum nss_status
340 getpwent_next_nis_netgr (const char *name, struct passwd *result, ent_t *ent,
341 char *group, char *buffer, size_t buflen, int *errnop)
343 struct parser_data *data = (void *) buffer;
344 char *ypdomain, *host, *user, *domain, *outval, *p, *p2;
345 int status, outvallen;
348 if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS)
352 give_pwd_free (&ent->pwd);
353 return NSS_STATUS_UNAVAIL;
356 if (ent->first == TRUE)
358 memset (&ent->netgrdata, 0, sizeof (struct __netgrent));
359 __internal_setnetgrent (group, &ent->netgrdata);
368 saved_cursor = ent->netgrdata.cursor;
369 status = __internal_getnetgrent_r (&host, &user, &domain,
370 &ent->netgrdata, buffer, buflen,
374 __internal_endnetgrent (&ent->netgrdata);
376 give_pwd_free (&ent->pwd);
377 return NSS_STATUS_RETURN;
380 if (user == NULL || user[0] == '-')
383 if (domain != NULL && strcmp (ypdomain, domain) != 0)
386 /* If name != NULL, we are called from getpwnam */
388 if (strcmp (user, name) != 0)
391 if (yp_match (ypdomain, "passwd.byname", user,
392 strlen (user), &outval, &outvallen)
396 p2len = pwd_need_buflen (&ent->pwd);
400 return NSS_STATUS_TRYAGAIN;
402 p2 = buffer + (buflen - p2len);
404 p = strncpy (buffer, outval, buflen);
408 parse_res = _nss_files_parse_pwent (p, result, data, buflen, errnop);
411 ent->netgrdata.cursor = saved_cursor;
412 return NSS_STATUS_TRYAGAIN;
417 /* Store the User in the blacklist for the "+" at the end of
419 blacklist_store_name (result->pw_name, ent);
420 copy_pwd_changes (result, &ent->pwd, p2, p2len);
425 return NSS_STATUS_SUCCESS;
428 static enum nss_status
429 getpwent_next_nisplus_netgr (const char *name, struct passwd *result,
430 ent_t *ent, char *group, char *buffer,
431 size_t buflen, int *errnop)
433 char *ypdomain, *host, *user, *domain, *p2;
434 int status, parse_res;
438 /* Maybe we should use domainname here ? We need the current
439 domainname for the domain field in netgroups */
440 if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS)
444 give_pwd_free (&ent->pwd);
445 return NSS_STATUS_UNAVAIL;
448 if (ent->first == TRUE)
450 bzero (&ent->netgrdata, sizeof (struct __netgrent));
451 __internal_setnetgrent (group, &ent->netgrdata);
459 saved_cursor = ent->netgrdata.cursor;
460 status = __internal_getnetgrent_r (&host, &user, &domain,
461 &ent->netgrdata, buffer, buflen,
465 __internal_endnetgrent (&ent->netgrdata);
467 give_pwd_free (&ent->pwd);
468 return NSS_STATUS_RETURN;
471 if (user == NULL || user[0] == '-')
474 if (domain != NULL && strcmp (ypdomain, domain) != 0)
477 /* If name != NULL, we are called from getpwnam */
479 if (strcmp (user, name) != 0)
482 p2len = pwd_need_buflen (&ent->pwd);
486 return NSS_STATUS_TRYAGAIN;
488 p2 = buffer + (buflen - p2len);
491 char buf[strlen (user) + 30 + pwdtablelen];
492 sprintf(buf, "[name=%s],%s", user, pwdtable);
493 nisres = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
495 if (niserr2nss (nisres->status) != NSS_STATUS_SUCCESS)
497 nis_freeresult (nisres);
500 parse_res = _nss_nisplus_parse_pwent (nisres, result, buffer,
504 nis_freeresult (nisres);
505 ent->netgrdata.cursor = saved_cursor;
507 return NSS_STATUS_TRYAGAIN;
509 nis_freeresult (nisres);
513 /* Store the User in the blacklist for the "+" at the end of
515 blacklist_store_name (result->pw_name, ent);
516 copy_pwd_changes (result, &ent->pwd, p2, p2len);
521 return NSS_STATUS_SUCCESS;
524 static enum nss_status
525 getpwent_next_nisplus (struct passwd *result, ent_t *ent, char *buffer,
526 size_t buflen, int *errnop)
532 p2len = pwd_need_buflen (&ent->pwd);
536 return NSS_STATUS_TRYAGAIN;
538 p2 = buffer + (buflen - p2len);
543 nis_result *saved_res;
548 saved_res = ent->result;
550 ent->result = nis_first_entry (pwdtable);
551 if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
554 give_pwd_free (&ent->pwd);
555 return niserr2nss (ent->result->status);
563 res = nis_next_entry (pwdtable, &ent->result->cookie);
564 saved_res = ent->result;
567 if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
570 nis_freeresult (saved_res);
571 give_pwd_free (&ent->pwd);
572 return niserr2nss (ent->result->status);
575 parse_res = _nss_nisplus_parse_pwent (ent->result, result, buffer,
579 nis_freeresult (ent->result);
580 ent->result = saved_res;
581 ent->first = saved_first;
583 return NSS_STATUS_TRYAGAIN;
588 nis_freeresult (saved_res);
592 in_blacklist (result->pw_name, strlen (result->pw_name), ent))
593 parse_res = 0; /* if result->pw_name in blacklist,search next entry */
597 copy_pwd_changes (result, &ent->pwd, p2, p2len);
599 return NSS_STATUS_SUCCESS;
602 static enum nss_status
603 getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer,
604 size_t buflen, int *errnop)
606 struct parser_data *data = (void *) buffer;
607 char *domain, *outkey, *outval, *p, *p2;
608 int outkeylen, outvallen, parse_res;
611 if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
614 give_pwd_free (&ent->pwd);
615 return NSS_STATUS_UNAVAIL;
618 p2len = pwd_need_buflen (&ent->pwd);
622 return NSS_STATUS_TRYAGAIN;
624 p2 = buffer + (buflen - p2len);
634 if (yp_first (domain, "passwd.byname", &outkey, &outkeylen,
635 &outval, &outvallen) != YPERR_SUCCESS)
638 give_pwd_free (&ent->pwd);
639 return NSS_STATUS_UNAVAIL;
643 saved_oldkey = ent->oldkey;
644 saved_oldlen = ent->oldkeylen;
645 ent->oldkey = outkey;
646 ent->oldkeylen = outkeylen;
651 if (yp_next (domain, "passwd.byname", ent->oldkey, ent->oldkeylen,
652 &outkey, &outkeylen, &outval, &outvallen)
656 give_pwd_free (&ent->pwd);
657 return NSS_STATUS_NOTFOUND;
661 saved_oldkey = ent->oldkey;
662 saved_oldlen = ent->oldkeylen;
663 ent->oldkey = outkey;
664 ent->oldkeylen = outkeylen;
667 /* Copy the found data to our buffer */
668 p = strncpy (buffer, outval, buflen);
670 /* ...and free the data. */
675 parse_res = _nss_files_parse_pwent (p, result, data, buflen, errnop);
679 ent->oldkey = saved_oldkey;
680 ent->oldkeylen = saved_oldlen;
681 ent->first = saved_first;
683 return NSS_STATUS_TRYAGAIN;
691 && in_blacklist (result->pw_name, strlen (result->pw_name), ent))
696 copy_pwd_changes (result, &ent->pwd, p2, p2len);
698 return NSS_STATUS_SUCCESS;
701 /* This function handle the +user entrys in /etc/passwd */
702 static enum nss_status
703 getpwnam_plususer (const char *name, struct passwd *result, char *buffer,
704 size_t buflen, int *errnop)
706 struct parser_data *data = (void *) buffer;
712 memset (&pwd, '\0', sizeof (struct passwd));
714 copy_pwd_changes (&pwd, result, NULL, 0);
716 plen = pwd_need_buflen (&pwd);
720 return NSS_STATUS_TRYAGAIN;
722 p = buffer + (buflen - plen);
725 if (use_nisplus) /* Do the NIS+ query here */
728 char buf[strlen (name) + 24 + pwdtablelen];
730 sprintf(buf, "[name=%s],%s", name, pwdtable);
731 res = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
732 if (niserr2nss (res->status) != NSS_STATUS_SUCCESS)
734 enum nss_status status = niserr2nss (res->status);
736 nis_freeresult (res);
739 parse_res = _nss_nisplus_parse_pwent (res, result, buffer,
743 nis_freeresult (res);
745 return NSS_STATUS_TRYAGAIN;
747 nis_freeresult (res);
751 char *domain, *outval, *ptr;
754 if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
757 return NSS_STATUS_TRYAGAIN;
760 if (yp_match (domain, "passwd.byname", name, strlen (name),
765 return NSS_STATUS_TRYAGAIN;
767 ptr = strncpy (buffer, outval, buflen < (size_t) outvallen ?
768 buflen : (size_t) outvallen);
769 buffer[buflen < (size_t) outvallen ? buflen : (size_t) outvallen] = '\0';
771 while (isspace (*ptr))
773 parse_res = _nss_files_parse_pwent (ptr, result, data, buflen, errnop);
775 return NSS_STATUS_TRYAGAIN;
780 copy_pwd_changes (result, &pwd, p, plen);
781 give_pwd_free (&pwd);
782 /* We found the entry. */
783 return NSS_STATUS_SUCCESS;
787 /* Give buffer the old len back */
789 give_pwd_free (&pwd);
791 return NSS_STATUS_RETURN;
794 static enum nss_status
795 getpwent_next_file (struct passwd *result, ent_t *ent,
796 char *buffer, size_t buflen, int *errnop)
798 struct parser_data *data = (void *) buffer;
807 fgetpos (ent->stream, &pos);
808 p = fgets (buffer, buflen, ent->stream);
811 if (feof (ent->stream))
812 return NSS_STATUS_NOTFOUND;
815 fsetpos (ent->stream, &pos);
817 return NSS_STATUS_TRYAGAIN;
821 /* Terminate the line for any case. */
822 buffer[buflen - 1] = '\0';
824 /* Skip leading blanks. */
828 while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
829 /* Parse the line. If it is invalid, loop to
830 get the next line of the file to parse. */
831 !(parse_res = _nss_files_parse_pwent (p, result, data, buflen,
836 /* The parser ran out of space. */
837 fsetpos (ent->stream, &pos);
839 return NSS_STATUS_TRYAGAIN;
842 if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
843 /* This is a real entry. */
847 if (result->pw_name[0] == '-' && result->pw_name[1] == '@'
848 && result->pw_name[2] != '\0')
850 /* XXX Do not use fixed length buffer. */
852 char *user, *host, *domain;
853 struct __netgrent netgrdata;
855 bzero (&netgrdata, sizeof (struct __netgrent));
856 __internal_setnetgrent (&result->pw_name[2], &netgrdata);
857 while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata,
858 buf2, sizeof (buf2), errnop))
860 if (user != NULL && user[0] != '-')
861 blacklist_store_name (user, ent);
863 __internal_endnetgrent (&netgrdata);
868 if (result->pw_name[0] == '+' && result->pw_name[1] == '@'
869 && result->pw_name[2] != '\0')
873 ent->netgroup = TRUE;
875 copy_pwd_changes (&ent->pwd, result, NULL, 0);
878 status = getpwent_next_nisplus_netgr (NULL, result, ent,
880 buffer, buflen, errnop);
882 status = getpwent_next_nis_netgr (NULL, result, ent,
884 buffer, buflen, errnop);
885 if (status == NSS_STATUS_RETURN)
892 if (result->pw_name[0] == '-' && result->pw_name[1] != '\0'
893 && result->pw_name[1] != '@')
895 blacklist_store_name (&result->pw_name[1], ent);
900 if (result->pw_name[0] == '+' && result->pw_name[1] != '\0'
901 && result->pw_name[1] != '@')
903 enum nss_status status;
905 /* Store the User in the blacklist for the "+" at the end of
907 blacklist_store_name (&result->pw_name[1], ent);
908 status = getpwnam_plususer (&result->pw_name[1], result, buffer,
910 if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
913 if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
917 if (status == NSS_STATUS_TRYAGAIN)
919 /* The parser ran out of space */
920 fsetpos (ent->stream, &pos);
928 if (result->pw_name[0] == '+' && result->pw_name[1] == '\0')
932 copy_pwd_changes (&ent->pwd, result, NULL, 0);
935 return getpwent_next_nisplus (result, ent, buffer, buflen, errnop);
937 return getpwent_next_nis (result, ent, buffer, buflen, errnop);
941 return NSS_STATUS_SUCCESS;
945 static enum nss_status
946 internal_getpwent_r (struct passwd *pw, ent_t *ent, char *buffer,
947 size_t buflen, int *errnop)
953 /* We are searching members in a netgroup */
954 /* Since this is not the first call, we don't need the group name */
956 status = getpwent_next_nisplus_netgr (NULL, pw, ent, NULL, buffer,
959 status = getpwent_next_nis_netgr (NULL, pw, ent, NULL, buffer, buflen,
961 if (status == NSS_STATUS_RETURN)
962 return getpwent_next_file (pw, ent, buffer, buflen, errnop);
970 return getpwent_next_nisplus (pw, ent, buffer, buflen, errnop);
972 return getpwent_next_nis (pw, ent, buffer, buflen, errnop);
975 return getpwent_next_file (pw, ent, buffer, buflen, errnop);
979 _nss_compat_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen,
982 enum nss_status status = NSS_STATUS_SUCCESS;
984 __libc_lock_lock (lock);
988 __nss_database_lookup ("passwd_compat", NULL, "nis", &ni);
989 use_nisplus = (strcmp (ni->name, "nisplus") == 0);
992 /* Be prepared that the setpwent function was not called before. */
993 if (ext_ent.stream == NULL)
994 status = internal_setpwent (&ext_ent);
996 if (status == NSS_STATUS_SUCCESS)
997 status = internal_getpwent_r (pwd, &ext_ent, buffer, buflen, errnop);
999 __libc_lock_unlock (lock);
1004 /* Searches in /etc/passwd and the NIS/NIS+ map for a special user */
1005 static enum nss_status
1006 internal_getpwnam_r (const char *name, struct passwd *result, ent_t *ent,
1007 char *buffer, size_t buflen, int *errnop)
1009 struct parser_data *data = (void *) buffer;
1019 fgetpos (ent->stream, &pos);
1020 p = fgets (buffer, buflen, ent->stream);
1023 if (feof (ent->stream))
1024 return NSS_STATUS_NOTFOUND;
1027 fsetpos (ent->stream, &pos);
1029 return NSS_STATUS_TRYAGAIN;
1033 /* Terminate the line for any case. */
1034 buffer[buflen - 1] = '\0';
1036 /* Skip leading blanks. */
1037 while (isspace (*p))
1040 while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
1041 /* Parse the line. If it is invalid, loop to
1042 get the next line of the file to parse. */
1043 !(parse_res = _nss_files_parse_pwent (p, result, data, buflen,
1046 if (parse_res == -1)
1048 /* The parser ran out of space. */
1049 fsetpos (ent->stream, &pos);
1051 return NSS_STATUS_TRYAGAIN;
1054 /* This is a real entry. */
1055 if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
1057 if (strcmp (result->pw_name, name) == 0)
1058 return NSS_STATUS_SUCCESS;
1064 if (result->pw_name[0] == '-' && result->pw_name[1] == '@'
1065 && result->pw_name[2] != '\0')
1067 /* XXX Do not use fixed length buffers. */
1069 char *user, *host, *domain;
1070 struct __netgrent netgrdata;
1072 bzero (&netgrdata, sizeof (struct __netgrent));
1073 __internal_setnetgrent (&result->pw_name[2], &netgrdata);
1074 while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata,
1075 buf2, sizeof (buf2), errnop))
1077 if (user != NULL && user[0] != '-')
1078 if (strcmp (user, name) == 0)
1079 return NSS_STATUS_NOTFOUND;
1081 __internal_endnetgrent (&netgrdata);
1086 if (result->pw_name[0] == '+' && result->pw_name[1] == '@'
1087 && result->pw_name[2] != '\0')
1089 char buf[strlen (result->pw_name)];
1092 strcpy (buf, &result->pw_name[2]);
1093 ent->netgroup = TRUE;
1095 copy_pwd_changes (&ent->pwd, result, NULL, 0);
1100 status = getpwent_next_nisplus_netgr (name, result, ent, buf,
1101 buffer, buflen, errnop);
1103 status = getpwent_next_nis_netgr (name, result, ent, buf,
1104 buffer, buflen, errnop);
1105 if (status == NSS_STATUS_RETURN)
1108 if (status == NSS_STATUS_SUCCESS &&
1109 strcmp (result->pw_name, name) == 0)
1110 return NSS_STATUS_SUCCESS;
1111 } while (status == NSS_STATUS_SUCCESS);
1116 if (result->pw_name[0] == '-' && result->pw_name[1] != '\0'
1117 && result->pw_name[1] != '@')
1119 if (strcmp (&result->pw_name[1], name) == 0)
1120 return NSS_STATUS_NOTFOUND;
1126 if (result->pw_name[0] == '+' && result->pw_name[1] != '\0'
1127 && result->pw_name[1] != '@')
1129 if (strcmp (name, &result->pw_name[1]) == 0)
1131 enum nss_status status;
1133 status = getpwnam_plususer (name, result, buffer, buflen,
1135 if (status == NSS_STATUS_RETURN)
1136 /* We couldn't parse the entry */
1137 return NSS_STATUS_NOTFOUND;
1144 if (result->pw_name[0] == '+' && result->pw_name[1] == '\0')
1146 enum nss_status status;
1148 status = getpwnam_plususer (name, result, buffer, buflen, errnop);
1149 if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
1152 if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
1153 return NSS_STATUS_NOTFOUND;
1158 return NSS_STATUS_SUCCESS;
1162 _nss_compat_getpwnam_r (const char *name, struct passwd *pwd,
1163 char *buffer, size_t buflen, int *errnop)
1165 ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0},
1166 {NULL, NULL, 0, 0, NULL, NULL, NULL}};
1167 enum nss_status status;
1169 if (name[0] == '-' || name[0] == '+')
1170 return NSS_STATUS_NOTFOUND;
1172 __libc_lock_lock (lock);
1176 __nss_database_lookup ("passwd_compat", NULL, "nis", &ni);
1177 use_nisplus = (strcmp (ni->name, "nisplus") == 0);
1180 __libc_lock_unlock (lock);
1182 status = internal_setpwent (&ent);
1183 if (status != NSS_STATUS_SUCCESS)
1186 status = internal_getpwnam_r (name, pwd, &ent, buffer, buflen, errnop);
1188 internal_endpwent (&ent);
1193 /* This function handle the + entry in /etc/passwd for getpwuid */
1194 static enum nss_status
1195 getpwuid_plususer (uid_t uid, struct passwd *result, char *buffer,
1196 size_t buflen, int *errnop)
1198 struct parser_data *data = (void *) buffer;
1204 memset (&pwd, '\0', sizeof (struct passwd));
1206 copy_pwd_changes (&pwd, result, NULL, 0);
1208 plen = pwd_need_buflen (&pwd);
1212 return NSS_STATUS_TRYAGAIN;
1214 p = buffer + (buflen - plen);
1217 if (use_nisplus) /* Do the NIS+ query here */
1220 char buf[1024 + pwdtablelen];
1222 snprintf(buf, sizeof (buf), "[uid=%d],%s", uid, pwdtable);
1223 res = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
1224 if (niserr2nss (res->status) != NSS_STATUS_SUCCESS)
1226 enum nss_status status = niserr2nss (res->status);
1228 nis_freeresult (res);
1231 if ((parse_res = _nss_nisplus_parse_pwent (res, result, buffer,
1232 buflen, errnop)) == -1)
1234 nis_freeresult (res);
1236 return NSS_STATUS_TRYAGAIN;
1238 nis_freeresult (res);
1243 char *domain, *outval, *ptr;
1246 if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
1249 return NSS_STATUS_TRYAGAIN;
1252 sprintf (buf, "%d", uid);
1253 if (yp_match (domain, "passwd.byuid", buf, strlen (buf),
1254 &outval, &outvallen)
1258 return NSS_STATUS_TRYAGAIN;
1260 ptr = strncpy (buffer, outval, buflen < (size_t) outvallen ?
1261 buflen : (size_t) outvallen);
1262 buffer[buflen < (size_t) outvallen ? buflen : (size_t) outvallen] = '\0';
1264 while (isspace (*ptr))
1266 parse_res = _nss_files_parse_pwent (ptr, result, data, buflen, errnop);
1267 if (parse_res == -1)
1268 return NSS_STATUS_TRYAGAIN;
1273 copy_pwd_changes (result, &pwd, p, plen);
1274 give_pwd_free (&pwd);
1275 /* We found the entry. */
1276 return NSS_STATUS_SUCCESS;
1280 /* Give buffer the old len back */
1282 give_pwd_free (&pwd);
1284 return NSS_STATUS_RETURN;
1287 /* Searches in /etc/passwd and the NIS/NIS+ map for a special user id */
1288 static enum nss_status
1289 internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent,
1290 char *buffer, size_t buflen, int *errnop)
1292 struct parser_data *data = (void *) buffer;
1302 fgetpos (ent->stream, &pos);
1303 p = fgets (buffer, buflen, ent->stream);
1306 if (feof (ent->stream))
1307 return NSS_STATUS_NOTFOUND;
1310 fsetpos (ent->stream, &pos);
1312 return NSS_STATUS_TRYAGAIN;
1316 /* Terminate the line for any case. */
1317 buffer[buflen - 1] = '\0';
1319 /* Skip leading blanks. */
1320 while (isspace (*p))
1323 while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
1324 /* Parse the line. If it is invalid, loop to
1325 get the next line of the file to parse. */
1326 !(parse_res = _nss_files_parse_pwent (p, result, data, buflen,
1329 if (parse_res == -1)
1331 /* The parser ran out of space. */
1332 fsetpos (ent->stream, &pos);
1334 return NSS_STATUS_TRYAGAIN;
1337 /* This is a real entry. */
1338 if (result->pw_name[0] != '+' && result->pw_name[0] != '-')
1340 if (result->pw_uid == uid)
1341 return NSS_STATUS_SUCCESS;
1347 if (result->pw_name[0] == '-' && result->pw_name[1] == '@'
1348 && result->pw_name[2] != '\0')
1350 /* XXX Do not use fixed length buffers. */
1352 char *user, *host, *domain;
1353 struct __netgrent netgrdata;
1355 bzero (&netgrdata, sizeof (struct __netgrent));
1356 __internal_setnetgrent (&result->pw_name[2], &netgrdata);
1357 while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata,
1358 buf2, sizeof (buf2), errnop))
1360 if (user != NULL && user[0] != '-')
1361 blacklist_store_name (user, ent);
1363 __internal_endnetgrent (&netgrdata);
1368 if (result->pw_name[0] == '+' && result->pw_name[1] == '@'
1369 && result->pw_name[2] != '\0')
1371 char buf[strlen (result->pw_name)];
1374 strcpy (buf, &result->pw_name[2]);
1375 ent->netgroup = TRUE;
1377 copy_pwd_changes (&ent->pwd, result, NULL, 0);
1382 status = getpwent_next_nisplus_netgr (NULL, result, ent, buf,
1383 buffer, buflen, errnop);
1385 status = getpwent_next_nis_netgr (NULL, result, ent, buf,
1386 buffer, buflen, errnop);
1387 if (status == NSS_STATUS_RETURN)
1390 if (status == NSS_STATUS_SUCCESS && uid == result->pw_uid)
1391 return NSS_STATUS_SUCCESS;
1392 } while (status == NSS_STATUS_SUCCESS);
1397 if (result->pw_name[0] == '-' && result->pw_name[1] != '\0'
1398 && result->pw_name[1] != '@')
1400 blacklist_store_name (&result->pw_name[1], ent);
1405 if (result->pw_name[0] == '+' && result->pw_name[1] != '\0'
1406 && result->pw_name[1] != '@')
1408 enum nss_status status;
1410 /* Store the User in the blacklist for the "+" at the end of
1412 blacklist_store_name (&result->pw_name[1], ent);
1413 status = getpwnam_plususer (&result->pw_name[1], result, buffer,
1415 if (status == NSS_STATUS_SUCCESS && result->pw_uid == uid)
1422 if (result->pw_name[0] == '+' && result->pw_name[1] == '\0')
1424 enum nss_status status;
1426 status = getpwuid_plususer (uid, result, buffer, buflen, errnop);
1427 if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
1430 if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */
1431 return NSS_STATUS_NOTFOUND;
1436 return NSS_STATUS_SUCCESS;
1440 _nss_compat_getpwuid_r (uid_t uid, struct passwd *pwd,
1441 char *buffer, size_t buflen, int *errnop)
1443 ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0},
1444 {NULL, NULL, 0, 0, NULL, NULL, NULL}};
1445 enum nss_status status;
1447 __libc_lock_lock (lock);
1451 __nss_database_lookup ("passwd_compat", NULL, "nis", &ni);
1452 use_nisplus = (strcmp (ni->name, "nisplus") == 0);
1455 __libc_lock_unlock (lock);
1457 status = internal_setpwent (&ent);
1458 if (status != NSS_STATUS_SUCCESS)
1461 status = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop);
1463 internal_endpwent (&ent);
1469 /* Support routines for remembering -@netgroup and -user entries.
1470 The names are stored in a single string with `|' as separator. */
1472 blacklist_store_name (const char *name, ent_t *ent)
1474 int namelen = strlen (name);
1477 /* first call, setup cache */
1478 if (ent->blacklist.size == 0)
1480 ent->blacklist.size = MAX (BLACKLIST_INITIAL_SIZE, 2 * namelen);
1481 ent->blacklist.data = malloc (ent->blacklist.size);
1482 if (ent->blacklist.data == NULL)
1484 ent->blacklist.data[0] = '|';
1485 ent->blacklist.data[1] = '\0';
1486 ent->blacklist.current = 1;
1490 if (in_blacklist (name, namelen, ent))
1491 return; /* no duplicates */
1493 if (ent->blacklist.current + namelen + 1 >= ent->blacklist.size)
1495 ent->blacklist.size += MAX (BLACKLIST_INCREMENT, 2 * namelen);
1496 tmp = realloc (ent->blacklist.data, ent->blacklist.size);
1499 free (ent->blacklist.data);
1500 ent->blacklist.size = 0;
1503 ent->blacklist.data = tmp;
1507 tmp = stpcpy (ent->blacklist.data + ent->blacklist.current, name);
1510 ent->blacklist.current += namelen + 1;
1515 /* returns TRUE if ent->blacklist contains name, else FALSE */
1517 in_blacklist (const char *name, int namelen, ent_t *ent)
1519 char buf[namelen + 3];
1522 if (ent->blacklist.data == NULL)
1526 cp = stpcpy (&buf[1], name);
1529 return strstr (ent->blacklist.data, buf) != NULL;