1 /* Services file parser in nss_files module. 2 Copyright (C) 1996-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 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 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <netinet/in.h> 20 #include <netdb.h> 21 #include <nss.h> 22 23 #define ENTNAME servent 24 #define DATABASE "services" 25 26 struct servent_data {}; 27 28 #define TRAILING_LIST_MEMBER s_aliases 29 #define TRAILING_LIST_SEPARATOR_P isspace 30 #include "files-parse.c" 31 #define ISSLASH(c) ((c) == '/') 32 LINE_PARSER 33 ("#", 34 STRING_FIELD (result->s_name, isspace, 1); 35 INT_FIELD (result->s_port, ISSLASH, 10, 0, htons); 36 STRING_FIELD (result->s_proto, isspace, 1); 37 ) 38 39 #include GENERIC 40 41 DB_LOOKUP (servbyname, ':', 42 strlen (name) + 2 + (proto == NULL ? 0 : strlen (proto)), 43 ("%s/%s", name, proto ?: ""), 44 { 45 /* Must match both protocol (if specified) and name. */ 46 if (proto != NULL && strcmp (result->s_proto, proto)) 47 /* A continue statement here breaks nss_db, because it 48 bypasses advancing to the next db entry, and it 49 doesn't make nss_files any more efficient. */; 50 else 51 LOOKUP_NAME (s_name, s_aliases) 52 }, 53 const char *name, const char *proto) 54 55 DB_LOOKUP (servbyport, '=', 21 + (proto ? strlen (proto) : 0), 56 ("%zd/%s", (ssize_t) ntohs (port), proto ?: ""), 57 { 58 /* Must match both port and protocol. */ 59 if (result->s_port == port 60 && (proto == NULL 61 || strcmp (result->s_proto, proto) == 0)) 62 break; 63 }, int port, const char *proto) 64