1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2020 Mariusz Zaborski <oshogbo@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _CAP_NETWORK_H_ 31 #define _CAP_NETWORK_H_ 32 33 #ifdef HAVE_CASPER 34 #define WITH_CASPER 35 #endif 36 37 #include <sys/dnv.h> 38 #include <sys/nv.h> 39 40 #include <sys/socket.h> 41 42 struct addrinfo; 43 struct hostent; 44 45 struct cap_net_limit; 46 typedef struct cap_net_limit cap_net_limit_t; 47 48 #define CAPNET_ADDR2NAME (0x01) 49 #define CAPNET_NAME2ADDR (0x02) 50 #define CAPNET_DEPRECATED_ADDR2NAME (0x04) 51 #define CAPNET_DEPRECATED_NAME2ADDR (0x08) 52 #define CAPNET_CONNECT (0x10) 53 #define CAPNET_BIND (0x20) 54 #define CAPNET_CONNECTDNS (0x40) 55 56 #ifdef WITH_CASPER 57 /* Capability functions. */ 58 int cap_bind(cap_channel_t *chan, int s, const struct sockaddr *addr, 59 socklen_t addrlen); 60 int cap_connect(cap_channel_t *chan, int s, const struct sockaddr *name, 61 socklen_t namelen); 62 63 int cap_getaddrinfo(cap_channel_t *chan, const char *hostname, 64 const char *servname, const struct addrinfo *hints, struct addrinfo **res); 65 int cap_getnameinfo(cap_channel_t *chan, const struct sockaddr *sa, 66 socklen_t salen, char *host, size_t hostlen, char *serv, size_t servlen, 67 int flags); 68 69 /* Limit functions. */ 70 cap_net_limit_t *cap_net_limit_init(cap_channel_t *chan, uint64_t mode); 71 int cap_net_limit(cap_net_limit_t *limit); 72 void cap_net_free(cap_net_limit_t *limit); 73 74 cap_net_limit_t *cap_net_limit_addr2name_family(cap_net_limit_t *limit, 75 int *family, size_t size); 76 cap_net_limit_t *cap_net_limit_addr2name(cap_net_limit_t *limit, 77 const struct sockaddr *sa, socklen_t salen); 78 79 cap_net_limit_t *cap_net_limit_name2addr_family(cap_net_limit_t *limit, 80 int *family, size_t size); 81 cap_net_limit_t *cap_net_limit_name2addr(cap_net_limit_t *limit, 82 const char *name, const char *serv); 83 84 cap_net_limit_t *cap_net_limit_connect(cap_net_limit_t *limit, 85 const struct sockaddr *sa, socklen_t salen); 86 87 cap_net_limit_t *cap_net_limit_bind(cap_net_limit_t *limit, 88 const struct sockaddr *sa, socklen_t salen); 89 90 /* Deprecated functions. */ 91 struct hostent *cap_gethostbyname(cap_channel_t *chan, const char *name); 92 struct hostent *cap_gethostbyname2(cap_channel_t *chan, const char *name, 93 int af); 94 struct hostent *cap_gethostbyaddr(cap_channel_t *chan, const void *addr, 95 socklen_t len, int af); 96 #else 97 /* Capability functions. */ 98 #define cap_bind(chan, s, addr, addrlen) \ 99 bind(s, addr, addrlen) 100 #define cap_connect(chan, s, name, namelen) \ 101 connect(s, name, namelen) 102 #define cap_getaddrinfo(chan, hostname, servname, hints, res) \ 103 getaddrinfo(hostname, servname, hints, res) 104 #define cap_getnameinfo(chan, sa, salen, host, hostlen, serv, servlen, flags) \ 105 getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) 106 107 /* Limit functions. */ 108 #define cap_net_limit_init(chan, mode) ((cap_net_limit_t *)malloc(8)) 109 #define cap_net_free(limit) free(limit) 110 static inline int 111 cap_net_limit(cap_net_limit_t *limit) 112 { 113 free(limit); 114 return (0); 115 } 116 117 static inline cap_net_limit_t * 118 cap_net_limit_addr2name_family(cap_net_limit_t *limit, 119 int *family __unused, size_t size __unused) 120 { 121 return (limit); 122 } 123 124 static inline cap_net_limit_t * 125 cap_net_limit_addr2name(cap_net_limit_t *limit, 126 const struct sockaddr *sa __unused, socklen_t salen __unused) 127 { 128 return (limit); 129 } 130 131 static inline cap_net_limit_t * 132 cap_net_limit_name2addr_family(cap_net_limit_t *limit, 133 int *family __unused, size_t size __unused) 134 { 135 return (limit); 136 } 137 138 static inline cap_net_limit_t * 139 cap_net_limit_name2addr(cap_net_limit_t *limit, 140 const char *name __unused, const char *serv __unused) 141 { 142 return (limit); 143 } 144 145 static inline cap_net_limit_t * 146 cap_net_limit_connect(cap_net_limit_t *limit, 147 const struct sockaddr *sa __unused, socklen_t salen __unused) 148 { 149 return (limit); 150 } 151 152 static inline cap_net_limit_t * 153 cap_net_limit_bind(cap_net_limit_t *limit, 154 const struct sockaddr *sa __unused, socklen_t salen __unused) 155 { 156 return (limit); 157 } 158 159 /* Deprecated functions. */ 160 #define cap_gethostbyname(chan, name) gethostbyname(name) 161 #define cap_gethostbyname2(chan, name, type) gethostbyname2(name, type) 162 #define cap_gethostbyaddr(chan, addr, len, type) gethostbyaddr(addr, len, type) 163 #endif 164 165 #endif /* !_CAP_NETWORK_H_ */ 166