diff options
Diffstat (limited to 'glibc-compat/nss_compat/compat-grp.c')
-rw-r--r-- | glibc-compat/nss_compat/compat-grp.c | 769 |
1 files changed, 0 insertions, 769 deletions
diff --git a/glibc-compat/nss_compat/compat-grp.c b/glibc-compat/nss_compat/compat-grp.c deleted file mode 100644 index d0780c4081..0000000000 --- a/glibc-compat/nss_compat/compat-grp.c +++ /dev/null @@ -1,769 +0,0 @@ -/* 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. - - 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 <errno.h> -#include <fcntl.h> -#include <nss.h> -#include <glibc-compat/include/grp.h> -#include <ctype.h> -#include <bits/libc-lock.h> -#include <string.h> -#include <rpcsvc/yp.h> -#include <rpcsvc/ypclnt.h> -#include <nsswitch.h> - -/* Get the declaration of the parser function. */ -#define ENTNAME grent -#define STRUCTURE group -#define EXTERN_PARSER -#include "../nss_files/files-parse.c" - -/* Structure for remembering -group 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; - } - - if (ent->blacklist.data != NULL) - { - ent->blacklist.current = 1; - ent->blacklist.data[0] = '|'; - ent->blacklist.data[1] = '\0'; - } - else - ent->blacklist.current = 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 - { - /* 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); - - 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; - } - - if (ent->blacklist.data != NULL) - { - ent->blacklist.current = 1; - ent->blacklist.data[0] = '|'; - ent->blacklist.data[1] = '\0'; - } - else - ent->blacklist.current = 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) -{ - struct parser_data *data = (void *) buffer; - char *domain; - char *outkey, *outval; - int outkeylen, outvallen, parse_res; - char *p; - - if (yp_get_default_domain (&domain) != YPERR_SUCCESS) - { - ent->nis = 0; - return NSS_STATUS_NOTFOUND; - } - - do - { - char *save_oldkey; - int save_oldlen; - bool_t save_nis_first; - - if (ent->nis_first) - { - if (yp_first (domain, "group.byname", &outkey, &outkeylen, - &outval, &outvallen) != YPERR_SUCCESS) - { - ent->nis = 0; - return NSS_STATUS_UNAVAIL; - } - save_oldkey = ent->oldkey; - save_oldlen = ent->oldkeylen; - save_nis_first = TRUE; - 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; - } - - save_oldkey = ent->oldkey; - save_oldlen = ent->oldkeylen; - save_nis_first = FALSE; - 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; - - if ((parse_res = _nss_files_parse_grent (p, result, data, buflen)) == -1) - { - free (ent->oldkey); - ent->oldkey = save_oldkey; - ent->oldkeylen = save_oldlen; - ent->nis_first = save_nis_first; - __set_errno (ERANGE); - return NSS_STATUS_TRYAGAIN; - } - else - { - if (!save_nis_first) - free (save_oldkey); - } - - if (parse_res && - in_blacklist (result->gr_name, strlen (result->gr_name), ent)) - parse_res = 0; /* if result->gr_name in blacklist,search next entry */ - } - while (!parse_res); - - return NSS_STATUS_SUCCESS; -} - -/* This function handle the +group entrys in /etc/group */ -static enum nss_status -getgrnam_plusgroup (const char *name, struct group *result, char *buffer, - size_t buflen) -{ - struct parser_data *data = (void *) buffer; - int parse_res; - char *domain, *outval, *p; - int outvallen; - - if (yp_get_default_domain (&domain) != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - - if (yp_match (domain, "group.byname", name, strlen (name), - &outval, &outvallen) != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - p = strncpy (buffer, outval, - buflen < (size_t) outvallen ? buflen : (size_t) outvallen); - free (outval); - while (isspace (*p)) - p++; - if ((parse_res = _nss_files_parse_grent (p, result, data, buflen)) == -1) - { - __set_errno (ERANGE); - return NSS_STATUS_TRYAGAIN; - } - - if (parse_res) - /* We found the entry. */ - return NSS_STATUS_SUCCESS; - else - return NSS_STATUS_RETURN; -} - -static enum nss_status -getgrent_next_file (struct group *result, ent_t *ent, - char *buffer, size_t buflen) -{ - struct parser_data *data = (void *) buffer; - while (1) - { - fpos_t pos; - int parse_res = 0; - char *p; - - 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); - __set_errno (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_grent (p, result, data, buflen))); - - if (parse_res == -1) - { - /* The parser ran out of space. */ - fsetpos (ent->stream, &pos); - __set_errno (ERANGE); - return NSS_STATUS_TRYAGAIN; - } - - 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] != '@') - { - enum nss_status status; - - /* Store the group in the blacklist for the "+" at the end of - /etc/group */ - blacklist_store_name (&result->gr_name[1], ent); - status = getgrnam_plusgroup (&result->gr_name[1], result, buffer, - buflen); - if (status == NSS_STATUS_SUCCESS) /* We found the entry. */ - break; - else - if (status == NSS_STATUS_RETURN /* We couldn't parse the entry */ - || status == NSS_STATUS_NOTFOUND) /* No group in NIS */ - continue; - else - { - if (status == NSS_STATUS_TRYAGAIN) - /* The parser ran out of space. */ - fsetpos (ent->stream, &pos); - return status; - } - } - - /* +:... */ - 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; -} - -/* Searches in /etc/group and the NIS/NIS+ map for a special group */ -static enum nss_status -internal_getgrnam_r (const char *name, struct group *result, ent_t *ent, - char *buffer, size_t buflen) -{ - struct parser_data *data = (void *) buffer; - while (1) - { - fpos_t pos; - int parse_res = 0; - char *p; - - 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); - __set_errno (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_grent (p, result, data, buflen))); - - if (parse_res == -1) - { - /* The parser ran out of space. */ - fsetpos (ent->stream, &pos); - __set_errno (ERANGE); - return NSS_STATUS_TRYAGAIN; - } - - /* This is a real entry. */ - if (result->gr_name[0] != '+' && result->gr_name[0] != '-') - { - if (strcmp (result->gr_name, name) == 0) - return NSS_STATUS_SUCCESS; - else - continue; - } - - /* -group */ - if (result->gr_name[0] == '-' && result->gr_name[1] != '\0') - { - if (strcmp (&result->gr_name[1], name) == 0) - return NSS_STATUS_NOTFOUND; - else - continue; - } - - /* +group */ - if (result->gr_name[0] == '+' && result->gr_name[1] != '\0') - { - if (strcmp (name, &result->gr_name[1]) == 0) - { - enum nss_status status; - - status = getgrnam_plusgroup (name, result, buffer, buflen); - if (status == NSS_STATUS_RETURN) - /* We couldn't parse the entry */ - continue; - else - return status; - } - } - /* +:... */ - if (result->gr_name[0] == '+' && result->gr_name[1] == '\0') - { - enum nss_status status; - - status = getgrnam_plusgroup (name, result, buffer, buflen); - if (status == NSS_STATUS_RETURN) - /* We couldn't parse the entry */ - continue; - else - return status; - } - } - - return NSS_STATUS_SUCCESS; -} - -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; - - __libc_lock_lock (lock); - - status = internal_setgrent (&ent); - - __libc_lock_unlock (lock); - - if (status != NSS_STATUS_SUCCESS) - return status; - - status = internal_getgrnam_r (name, grp, &ent, buffer, buflen); - - internal_endgrent (&ent); - - return status; -} - -/* This function handle the + entry in /etc/group */ -static enum nss_status -getgrgid_plusgroup (gid_t gid, struct group *result, char *buffer, - size_t buflen) -{ - struct parser_data *data = (void *) buffer; - int parse_res; - char buf[1024]; - char *domain, *outval, *p; - int outvallen; - - if (yp_get_default_domain (&domain) != YPERR_SUCCESS) - return NSS_STATUS_TRYAGAIN; - - snprintf (buf, sizeof (buf), "%d", gid); - - if (yp_match (domain, "group.bygid", buf, strlen (buf), - &outval, &outvallen) != YPERR_SUCCESS) - return NSS_STATUS_TRYAGAIN; - p = strncpy (buffer, outval, - buflen < (size_t) outvallen ? buflen : (size_t) outvallen); - free (outval); - while (isspace (*p)) - p++; - if ((parse_res = _nss_files_parse_grent (p, result, data, buflen)) == -1) - { - __set_errno (ERANGE); - return NSS_STATUS_TRYAGAIN; - } - - if (parse_res) - /* We found the entry. */ - return NSS_STATUS_SUCCESS; - else - return NSS_STATUS_RETURN; -} - -/* Searches in /etc/group and the NIS/NIS+ map for a special group id */ -static enum nss_status -internal_getgrgid_r (gid_t gid, struct group *result, ent_t *ent, - char *buffer, size_t buflen) -{ - struct parser_data *data = (void *) buffer; - while (1) - { - fpos_t pos; - int parse_res = 0; - char *p; - - 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); - __set_errno (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_grent (p, result, data, buflen))); - - if (parse_res == -1) - { - /* The parser ran out of space. */ - fsetpos (ent->stream, &pos); - __set_errno (ERANGE); - return NSS_STATUS_TRYAGAIN; - } - - /* This is a real entry. */ - if (result->gr_name[0] != '+' && result->gr_name[0] != '-') - { - if (result->gr_gid == gid) - return NSS_STATUS_SUCCESS; - else - continue; - } - - /* -group */ - if (result->gr_name[0] == '-' && result->gr_name[1] != '\0') - { - blacklist_store_name (&result->gr_name[1], ent); - continue; - } - - /* +group */ - if (result->gr_name[0] == '+' && result->gr_name[1] != '\0') - { - enum nss_status status; - - /* Store the group in the blacklist for the "+" at the end of - /etc/group */ - blacklist_store_name (&result->gr_name[1], ent); - status = getgrnam_plusgroup (&result->gr_name[1], result, buffer, - buflen); - if (status == NSS_STATUS_SUCCESS && result->gr_gid == gid) - break; - else - continue; - } - /* +:... */ - if (result->gr_name[0] == '+' && result->gr_name[1] == '\0') - { - enum nss_status status; - - status = getgrgid_plusgroup (gid, result, buffer, buflen); - 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_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; - - __libc_lock_lock (lock); - - status = internal_setgrent (&ent); - - __libc_lock_unlock (lock); - - if (status != NSS_STATUS_SUCCESS) - return status; - - status = internal_getgrgid_r (gid, grp, &ent, buffer, buflen); - - 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]; - char *cp; - - if (ent->blacklist.data == NULL) - return FALSE; - - buf[0] = '|'; - cp = stpcpy (&buf[1], name); - *cp++= '|'; - *cp = '\0'; - return strstr (ent->blacklist.data, buf) != NULL; -} |