From 94d9c76e4acc798894ea23d9ac049ce7ce995ec0 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Mon, 6 Jul 2020 20:20:44 +0200 Subject: nss: Remove cryptographic key support from nss_files, nss_nis, nss_nisplus The interface has hard-coded buffer sizes and is therefore tied to DES. It also does not match current practice where different services on the same host use different key material. This change simplifies removal of the sunrpc code. --- nss/nss_files/files-key.c | 113 ---------------------------------------------- 1 file changed, 113 deletions(-) delete mode 100644 nss/nss_files/files-key.c (limited to 'nss/nss_files') diff --git a/nss/nss_files/files-key.c b/nss/nss_files/files-key.c deleted file mode 100644 index cf0a7d9..0000000 --- a/nss/nss_files/files-key.c +++ /dev/null @@ -1,113 +0,0 @@ -/* Public key file parser in nss_files module. - Copyright (C) 1996-2020 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include -#include -#include -#include "nsswitch.h" - -NSS_DECLARE_MODULE_FUNCTIONS (files) - -#define DATAFILE "/etc/publickey" - - -static enum nss_status -search (const char *netname, char *result, int *errnop, int secret) -{ - FILE *stream = fopen (DATAFILE, "rce"); - if (stream == NULL) - return errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL; - - for (;;) - { - char buffer[HEXKEYBYTES * 2 + KEYCHECKSUMSIZE + MAXNETNAMELEN + 17]; - char *p; - char *save_ptr; - - buffer[sizeof (buffer) - 1] = '\xff'; - p = fgets_unlocked (buffer, sizeof (buffer), stream); - if (p == NULL) - { - /* End of file or read error. */ - *errnop = errno; - fclose (stream); - return NSS_STATUS_NOTFOUND; - } - else if (buffer[sizeof (buffer) - 1] != '\xff') - { - /* Invalid line in file? Skip remainder of line. */ - if (buffer[sizeof (buffer) - 2] != '\0') - while (getc_unlocked (stream) != '\n') - continue; - continue; - } - - /* Parse line. */ - p = __strtok_r (buffer, "# \t:\n", &save_ptr); - if (p == NULL) /* Skip empty and comment lines. */ - continue; - if (strcmp (p, netname) != 0) - continue; - - /* A hit! Find the field we want and return. */ - p = __strtok_r (NULL, ":\n", &save_ptr); - if (p == NULL) /* malformed line? */ - continue; - if (secret) - p = __strtok_r (NULL, ":\n", &save_ptr); - if (p == NULL) /* malformed line? */ - continue; - fclose (stream); - strcpy (result, p); - return NSS_STATUS_SUCCESS; - } -} - -enum nss_status -_nss_files_getpublickey (const char *netname, char *pkey, int *errnop) -{ - return search (netname, pkey, errnop, 0); -} - -enum nss_status -_nss_files_getsecretkey (const char *netname, char *skey, char *passwd, - int *errnop) -{ - enum nss_status status; - char buf[HEXKEYBYTES + KEYCHECKSUMSIZE + 16]; - - skey[0] = 0; - - status = search (netname, buf, errnop, 1); - if (status != NSS_STATUS_SUCCESS) - return status; - - if (!xdecrypt (buf, passwd)) - return NSS_STATUS_SUCCESS; - - if (memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) != 0) - return NSS_STATUS_SUCCESS; - - buf[HEXKEYBYTES] = 0; - strcpy (skey, buf); - - return NSS_STATUS_SUCCESS; -} -- cgit v1.1