From 6259ec0d78fd301572fcb616fdfa0500b828a824 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 11 Dec 1996 01:40:39 +0000 Subject: update from main arcive 961210 Wed Dec 11 01:04:30 1996 Ulrich Drepper Add NIS NSS implementation. * shlib-versions: Add versions for NIS libraries. * sysdeps/unix/inet/Subdirs: Add nis. * nis/Banner: New file. * nis/Makefile: New file. * nis/nss-nis.h: New file. * nis/yp_xdr.h: New file. * nis/ypclnt.h: New file. * nis/ypupdate_xdr.c: New file. * nis/nss_compat/compat-grp.c: New file. * nis/nss_compat/compat-pwd.c: New file. * nis/nss_compat/compat-spwd.c: New file. * nis/nss_nis/nis-alias.c: New file. * nis/nss_nis/nis-ethers.c: New file. * nis/nss_nis/nis-grp.c: New file. * nis/nss_nis/nis-hosts.c: New file. * nis/nss_nis/nis-netgrp.c: New file. * nis/nss_nis/nis-network.c: New file. * nis/nss_nis/nis-proto.c: New file. * nis/nss_nis/nis-publickey.c: New file. * nis/nss_nis/nis-pwd.c: New file. * nis/nss_nis/nis-rpc.c: New file. * nis/nss_nis/nis-service.c: New file. * nis/nss_nis/nis-spwd.c: New file. * nis/rpcsvc/yp.h: New file. * nis/rpcsvc/yp.x: New file. * nis/rpcsvc/yp_prot.h: New file. * nis/rpcsvc/ypclnt.h: New file. * nis/rpcsvc/ypupd.h: New file. * libio/_G_config.h: Define _G_HAVE_SYS_WAIT and _G_HAVE_PRINTF_FP. * locale/C-numeric.c: Update copyright. * locale/Makefile: Add rules to build libBrokenLocale. * locale/broken_cur_max.c: New file. * locale/mb_cur_max.c: Update copyright. (__ctype_get_mb_cur_max): Make function weak. * new-malloc/malloc.c: Correct copyright. * new-malloc/thread-m.h: Correct key handling. * shadow/lckpwdf.c: Update copyright. (PWD_LOCKFILE): Change to /etc/.pwd.lock. * stdlib/strtod.c: Add another assertion. * stdlib/tst-strtod.c: Add another test case. * sysdeps/generic/paths.h: Add _PATH_PRESERVE. Needed by nvi. * sysdeps/unix/sysv/linux/paths.h: Likewise. * sysdeps/gnu/utmpbits.h: Rename ut_addr field to ut_addr_v6. ut_addr names a single element in ut_addr_v6. * sysdeps/mach/hurd/xmknod.c: Remove alias from __mknod to mknod. Patch by Thomas Bushnell, n/BSG. Tue Dec 10 11:35:28 1996 Richard Henderson * sysdeps/alpha/strncmp.S: Fix aligned short truncated compare corner condition. * sysdeps/alpha/memchr.S: Don't read ahead, even if the load did fit nicely into that delay slot (patch from David Mosberger-Tang). Mon Dec 9 23:53:43 1996 Thomas Bushnell, n/BSG * sysdeps/mach/hurd/ttyname_r.c (__ttyname_r): Renamed from `ttyname_r'. (ttyname_r): New alias. * stdio-common/printf_fp.c (__guess_grouping): Fix off by one --- nis/nss_compat/compat-grp.c | 421 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 421 insertions(+) create mode 100644 nis/nss_compat/compat-grp.c (limited to 'nis/nss_compat/compat-grp.c') diff --git a/nis/nss_compat/compat-grp.c b/nis/nss_compat/compat-grp.c new file mode 100644 index 0000000000..0b4ed40e59 --- /dev/null +++ b/nis/nss_compat/compat-grp.c @@ -0,0 +1,421 @@ +/* Copyright (C) 1996 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk , 1996. + + The GNU C 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. + + The GNU C 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 the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Structure for remembering -@netgroup and -user members ... */ +#define BLACKLIST_INITIAL_SIZE 512 +#define BLACKLIST_INCREMENT 256 +struct blacklist_t + { + char *data; + int current; + int size; + }; + +struct ent_t + { + bool_t nis; + bool_t nis_first; + char *oldkey; + int oldkeylen; + FILE *stream; + struct blacklist_t blacklist; + }; +typedef struct ent_t ent_t; + +static ent_t ext_ent = {0, 0, NULL, 0, NULL, {NULL, 0, 0}}; + +/* Protect global state against multiple changers. */ +__libc_lock_define_initialized (static, lock) + +/* Prototypes for local functions. */ +static void blacklist_store_name (const char *, ent_t *); +static int in_blacklist (const char *, int, ent_t *); + +static enum nss_status +internal_setgrent (ent_t *ent) +{ + enum nss_status status = NSS_STATUS_SUCCESS; + + ent->nis = ent->nis_first = 0; + + if (ent->oldkey != NULL) + { + free (ent->oldkey); + ent->oldkey = NULL; + ent->oldkeylen = 0; + } + + ent->blacklist.current = 0; + if (ent->blacklist.data != NULL) + ent->blacklist.data[0] = '\0'; + + if (ent->stream == NULL) + { + ent->stream = fopen ("/etc/group", "r"); + + if (ent->stream == NULL) + status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL; + } + else + rewind (ent->stream); + + return status; +} + + +enum nss_status +_nss_compat_setgrent (void) +{ + enum nss_status result; + + __libc_lock_lock (lock); + + result = internal_setgrent (&ext_ent); + + __libc_lock_unlock (lock); + + return result; +} + + +static enum nss_status +internal_endgrent (ent_t *ent) +{ + if (ent->stream != NULL) + { + fclose (ent->stream); + ent->stream = NULL; + } + + ent->nis = ent->nis_first = 0; + + if (ent->oldkey != NULL) + { + free (ent->oldkey); + ent->oldkey = NULL; + ent->oldkeylen = 0; + } + + ent->blacklist.current = 0; + if (ent->blacklist.data != NULL) + ent->blacklist.data[0] = '\0'; + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_compat_endgrent (void) +{ + enum nss_status result; + + __libc_lock_lock (lock); + + result = internal_endgrent (&ext_ent); + + __libc_lock_unlock (lock); + + return result; +} + +static enum nss_status +getgrent_next_nis (struct group *result, ent_t *ent, char *buffer, + size_t buflen) +{ + char *domain; + char *outkey, *outval; + int outkeylen, outvallen; + char *p; + + if (yp_get_default_domain (&domain) != YPERR_SUCCESS) + { + ent->nis = 0; + return NSS_STATUS_NOTFOUND; + } + + do + { + if (ent->nis_first) + { + if (yp_first (domain, "group.byname", &outkey, &outkeylen, + &outval, &outvallen) != YPERR_SUCCESS) + { + ent->nis = 0; + return NSS_STATUS_UNAVAIL; + } + + ent->oldkey = outkey; + ent->oldkeylen = outkeylen; + ent->nis_first = FALSE; + } + else + { + if (yp_next (domain, "group.byname", ent->oldkey, ent->oldkeylen, + &outkey, &outkeylen, &outval, &outvallen) + != YPERR_SUCCESS) + { + ent->nis = 0; + return NSS_STATUS_NOTFOUND; + } + + free (ent->oldkey); + ent->oldkey = outkey; + ent->oldkeylen = outkeylen; + } + + /* Copy the found data to our buffer */ + p = strncpy (buffer, outval, buflen); + + /* ...and free the data. */ + free (outval); + + while (isspace (*p)) + ++p; + } + while (!_nss_files_parse_grent (p, result, buffer, buflen)); + + if (!in_blacklist (result->gr_name, strlen (result->gr_name), ent)) + return NSS_STATUS_SUCCESS; + else + return NSS_STATUS_NOTFOUND; +} + + +static enum nss_status +getgrent_next_file (struct group *result, ent_t *ent, + char *buffer, size_t buflen) +{ + while (1) + { + char *p; + + do + { + p = fgets (buffer, buflen, ent->stream); + if (p == NULL) + return NSS_STATUS_NOTFOUND; + + /* Terminate the line for any case. */ + buffer[buflen - 1] = '\0'; + + /* Skip leading blanks. */ + while (isspace (*p)) + ++p; + } + /* Ignore empty and comment lines. */ + while (*p == '\0' || *p == '#' || + /* Parse the line. If it is invalid, loop to + get the next line of the file to parse. */ + !_nss_files_parse_grent (p, result, buffer, buflen)); + + if (result->gr_name[0] != '+' && result->gr_name[0] != '-') + /* This is a real entry. */ + break; + + /* -group */ + if (result->gr_name[0] == '-' && result->gr_name[1] != '\0' + && result->gr_name[1] != '@') + { + blacklist_store_name (&result->gr_name[1], ent); + continue; + } + + /* +group */ + if (result->gr_name[0] == '+' && result->gr_name[1] != '\0' + && result->gr_name[1] != '@') + { + char *domain; + char *outval; + int outvallen; + + if (yp_get_default_domain (&domain) != YPERR_SUCCESS) + /* XXX Should we regard this as an fatal error? I don't + think so. Just continue working. --drepper@gnu */ + continue; + + if (yp_match (domain, "group.byname", &result->gr_name[1], + strlen (result->gr_name) - 1, &outval, &outvallen) + != YPERR_SUCCESS) + continue; + + p = strncpy (buffer, outval, buflen); + while (isspace (*p)) + p++; + free (outval); + if (_nss_files_parse_grent (p, result, buffer, buflen)) + /* We found the entry. */ + break; + } + + /* +:... */ + if (result->gr_name[0] == '+' && result->gr_name[1] == '\0') + { + ent->nis = TRUE; + ent->nis_first = TRUE; + + return getgrent_next_nis (result, ent, buffer, buflen); + } + } + + return NSS_STATUS_SUCCESS; +} + + +static enum nss_status +internal_getgrent_r (struct group *gr, ent_t *ent, char *buffer, + size_t buflen) +{ + if (ent->nis) + return getgrent_next_nis (gr, ent, buffer, buflen); + else + return getgrent_next_file (gr, ent, buffer, buflen); +} + +enum nss_status +_nss_compat_getgrent_r (struct group *grp, char *buffer, size_t buflen) +{ + enum nss_status status = NSS_STATUS_SUCCESS; + + __libc_lock_lock (lock); + + /* Be prepared that the setgrent function was not called before. */ + if (ext_ent.stream == NULL) + status = internal_setgrent (&ext_ent); + + if (status == NSS_STATUS_SUCCESS) + status = internal_getgrent_r (grp, &ext_ent, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} + + +enum nss_status +_nss_compat_getgrnam_r (const char *name, struct group *grp, + char *buffer, size_t buflen) +{ + ent_t ent = {0, 0, NULL, 0, NULL, {NULL, 0, 0}}; + enum nss_status status; + + if (name[0] == '-' || name[0] == '+') + return NSS_STATUS_NOTFOUND; + + + status = internal_setgrent (&ent); + if (status != NSS_STATUS_SUCCESS) + return status; + + while ((status = internal_getgrent_r (grp, &ent, buffer, buflen)) + == NSS_STATUS_SUCCESS) + if (strcmp (grp->gr_name, name) == 0) + break; + + internal_endgrent (&ent); + return status; +} + + +enum nss_status +_nss_compat_getgrgid_r (gid_t gid, struct group *grp, + char *buffer, size_t buflen) +{ + ent_t ent = {0, 0, NULL, 0, NULL, {NULL, 0, 0}}; + enum nss_status status; + + status = internal_setgrent (&ent); + if (status != NSS_STATUS_SUCCESS) + return status; + + while ((status = internal_getgrent_r (grp, &ent, buffer, buflen)) + == NSS_STATUS_SUCCESS) + if (grp->gr_gid == gid && grp->gr_name[0] != '+' && grp->gr_name[0] != '-') + break; + + internal_endgrent (&ent); + return status; +} + + +/* Support routines for remembering -@netgroup and -user entries. + The names are stored in a single string with `|' as separator. */ +static void +blacklist_store_name (const char *name, ent_t *ent) +{ + int namelen = strlen (name); + char *tmp; + + /* first call, setup cache */ + if (ent->blacklist.size == 0) + { + ent->blacklist.size = MAX (BLACKLIST_INITIAL_SIZE, 2 * namelen); + ent->blacklist.data = malloc (ent->blacklist.size); + if (ent->blacklist.data == NULL) + return; + ent->blacklist.data[0] = '|'; + ent->blacklist.data[1] = '\0'; + ent->blacklist.current = 1; + } + else + { + if (in_blacklist (name, namelen, ent)) + return; /* no duplicates */ + + if (ent->blacklist.current + namelen + 1 >= ent->blacklist.size) + { + ent->blacklist.size += MAX (BLACKLIST_INCREMENT, 2 * namelen); + tmp = realloc (ent->blacklist.data, ent->blacklist.size); + if (tmp == NULL) + { + free (ent->blacklist.data); + ent->blacklist.size = 0; + return; + } + ent->blacklist.data = tmp; + } + } + + tmp = stpcpy (ent->blacklist.data + ent->blacklist.current, name); + *tmp++ = '|'; + *tmp = '\0'; + ent->blacklist.current += namelen + 1; + + return; +} + +/* returns TRUE if ent->blacklist contains name, else FALSE */ +static bool_t +in_blacklist (const char *name, int namelen, ent_t *ent) +{ + char buf[namelen + 3]; + + if (ent->blacklist.data == NULL) + return FALSE; + + stpcpy (stpcpy (stpcpy (buf, "|"), name), "|"); + return strstr (ent->blacklist.data, buf) != NULL; +} -- cgit 1.4.1