| File: | src/lib/libcrypto/bio/b_sock.c |
| Warning: | line 171, column 3 Value stored to 'bind_mode' is never read |
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| 1 | /* $OpenBSD: b_sock.c,v 1.69 2018/02/07 00:52:05 bluhm Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2017 Bob Beck <beck@openbsd.org> |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #include <sys/ioctl.h> |
| 19 | #include <sys/socket.h> |
| 20 | #include <string.h> |
| 21 | |
| 22 | #include <arpa/inet.h> |
| 23 | #include <netinet/in.h> |
| 24 | #include <netinet/tcp.h> |
| 25 | |
| 26 | #include <errno(*__errno()).h> |
| 27 | #include <limits.h> |
| 28 | #include <netdb.h> |
| 29 | #include <stdio.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <unistd.h> |
| 32 | |
| 33 | #include <openssl/bio.h> |
| 34 | #include <openssl/buffer.h> |
| 35 | #include <openssl/err.h> |
| 36 | |
| 37 | int |
| 38 | BIO_get_host_ip(const char *str, unsigned char *ip) |
| 39 | { |
| 40 | struct addrinfo *res = NULL((void*)0); |
| 41 | struct addrinfo hints = { |
| 42 | .ai_family = AF_INET2, |
| 43 | .ai_socktype = SOCK_STREAM1, |
| 44 | .ai_flags = AI_PASSIVE1, |
| 45 | }; |
| 46 | uint32_t *iap = (in_addr_t *)ip; |
| 47 | int error; |
| 48 | |
| 49 | if (str == NULL((void*)0)) { |
| 50 | ERR_asprintf_error_data("NULL host provided"); |
| 51 | return (0); |
| 52 | } |
| 53 | |
| 54 | if ((error = getaddrinfo(str, NULL((void*)0), &hints, &res)) != 0) { |
| 55 | BIOerror(BIO_R_BAD_HOSTNAME_LOOKUP)ERR_put_error(32,(0xfff),(102),"/usr/src/lib/libcrypto/bio/b_sock.c" ,55); |
| 56 | ERR_asprintf_error_data("getaddrinfo: host='%s' : %s'", str, |
| 57 | gai_strerror(error)); |
| 58 | return (0); |
| 59 | } |
| 60 | *iap = (uint32_t)(((struct sockaddr_in *)(res->ai_addr))->sin_addr.s_addr); |
| 61 | freeaddrinfo(res); |
| 62 | return (1); |
| 63 | } |
| 64 | |
| 65 | int |
| 66 | BIO_get_port(const char *str, unsigned short *port_ptr) |
| 67 | { |
| 68 | struct addrinfo *res = NULL((void*)0); |
| 69 | struct addrinfo hints = { |
| 70 | .ai_family = AF_UNSPEC0, |
| 71 | .ai_socktype = SOCK_STREAM1, |
| 72 | .ai_flags = AI_PASSIVE1, |
| 73 | }; |
| 74 | int error; |
| 75 | |
| 76 | if (str == NULL((void*)0)) { |
| 77 | BIOerror(BIO_R_NO_PORT_SPECIFIED)ERR_put_error(32,(0xfff),(114),"/usr/src/lib/libcrypto/bio/b_sock.c" ,77); |
| 78 | return (0); |
| 79 | } |
| 80 | |
| 81 | if ((error = getaddrinfo(NULL((void*)0), str, &hints, &res)) != 0) { |
| 82 | ERR_asprintf_error_data("getaddrinfo: service='%s' : %s'", str, |
| 83 | gai_strerror(error)); |
| 84 | return (0); |
| 85 | } |
| 86 | *port_ptr = ntohs(((struct sockaddr_in *)(res->ai_addr))->sin_port)(__uint16_t)(__builtin_constant_p(((struct sockaddr_in *)(res ->ai_addr))->sin_port) ? (__uint16_t)(((__uint16_t)(((struct sockaddr_in *)(res->ai_addr))->sin_port) & 0xffU) << 8 | ((__uint16_t)(((struct sockaddr_in *)(res->ai_addr))-> sin_port) & 0xff00U) >> 8) : __swap16md(((struct sockaddr_in *)(res->ai_addr))->sin_port)); |
| 87 | freeaddrinfo(res); |
| 88 | return (1); |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | BIO_sock_error(int sock) |
| 93 | { |
| 94 | socklen_t len; |
| 95 | int err; |
| 96 | |
| 97 | len = sizeof(err); |
| 98 | if (getsockopt(sock, SOL_SOCKET0xffff, SO_ERROR0x1007, &err, &len) != 0) |
| 99 | return (1); |
| 100 | return (err); |
| 101 | } |
| 102 | |
| 103 | struct hostent * |
| 104 | BIO_gethostbyname(const char *name) |
| 105 | { |
| 106 | return gethostbyname(name); |
| 107 | } |
| 108 | |
| 109 | int |
| 110 | BIO_socket_ioctl(int fd, long type, void *arg) |
| 111 | { |
| 112 | int ret; |
| 113 | |
| 114 | ret = ioctl(fd, type, arg); |
| 115 | if (ret < 0) |
| 116 | SYSerror(errno)ERR_put_error(2,(0xfff),((*__errno())),"/usr/src/lib/libcrypto/bio/b_sock.c" ,116); |
| 117 | return (ret); |
| 118 | } |
| 119 | |
| 120 | int |
| 121 | BIO_get_accept_socket(char *host, int bind_mode) |
| 122 | { |
| 123 | struct addrinfo hints = { |
| 124 | .ai_family = AF_INET2, |
| 125 | .ai_socktype = SOCK_STREAM1, |
| 126 | .ai_flags = AI_PASSIVE1, |
| 127 | }; |
| 128 | struct addrinfo *res = NULL((void*)0); |
| 129 | char *h, *p, *str = NULL((void*)0); |
| 130 | int error, ret = 0, s = -1; |
| 131 | |
| 132 | if (host == NULL((void*)0) || (str = strdup(host)) == NULL((void*)0)) |
| 133 | return (-1); |
| 134 | p = NULL((void*)0); |
| 135 | h = str; |
| 136 | if ((p = strrchr(str, ':')) == NULL((void*)0)) { |
| 137 | /* A string without a colon is treated as a port. */ |
| 138 | p = str; |
| 139 | h = NULL((void*)0); |
| 140 | } else { |
| 141 | *p++ = '\0'; |
| 142 | if (*p == '\0') { |
| 143 | BIOerror(BIO_R_NO_PORT_SPECIFIED)ERR_put_error(32,(0xfff),(114),"/usr/src/lib/libcrypto/bio/b_sock.c" ,143); |
| 144 | goto err; |
| 145 | } |
| 146 | if (*h == '\0' || strcmp(h, "*") == 0) |
| 147 | h = NULL((void*)0); |
| 148 | } |
| 149 | |
| 150 | if ((error = getaddrinfo(h, p, &hints, &res)) != 0) { |
| 151 | ERR_asprintf_error_data("getaddrinfo: '%s:%s': %s'", h, p, |
| 152 | gai_strerror(error)); |
| 153 | goto err; |
| 154 | } |
| 155 | if (h == NULL((void*)0)) { |
| 156 | struct sockaddr_in *sin = (struct sockaddr_in *)res->ai_addr; |
| 157 | sin->sin_addr.s_addr = INADDR_ANY((u_int32_t)(0x00000000)); |
| 158 | } |
| 159 | |
| 160 | s = socket(AF_INET2, SOCK_STREAM1, IPPROTO_TCP6); |
| 161 | if (s == -1) { |
| 162 | SYSerror(errno)ERR_put_error(2,(0xfff),((*__errno())),"/usr/src/lib/libcrypto/bio/b_sock.c" ,162); |
| 163 | ERR_asprintf_error_data("host='%s'", host); |
| 164 | BIOerror(BIO_R_UNABLE_TO_CREATE_SOCKET)ERR_put_error(32,(0xfff),(118),"/usr/src/lib/libcrypto/bio/b_sock.c" ,164); |
| 165 | goto err; |
| 166 | } |
| 167 | if (bind_mode == BIO_BIND_REUSEADDR2) { |
| 168 | int i = 1; |
| 169 | |
| 170 | ret = setsockopt(s, SOL_SOCKET0xffff, SO_REUSEADDR0x0004, &i, sizeof(i)); |
| 171 | bind_mode = BIO_BIND_NORMAL0; |
Value stored to 'bind_mode' is never read | |
| 172 | } |
| 173 | if (bind(s, res->ai_addr, res->ai_addrlen) == -1) { |
| 174 | SYSerror(errno)ERR_put_error(2,(0xfff),((*__errno())),"/usr/src/lib/libcrypto/bio/b_sock.c" ,174); |
| 175 | ERR_asprintf_error_data("host='%s'", host); |
| 176 | BIOerror(BIO_R_UNABLE_TO_BIND_SOCKET)ERR_put_error(32,(0xfff),(117),"/usr/src/lib/libcrypto/bio/b_sock.c" ,176); |
| 177 | goto err; |
| 178 | } |
| 179 | if (listen(s, SOMAXCONN128) == -1) { |
| 180 | SYSerror(errno)ERR_put_error(2,(0xfff),((*__errno())),"/usr/src/lib/libcrypto/bio/b_sock.c" ,180); |
| 181 | ERR_asprintf_error_data("host='%s'", host); |
| 182 | BIOerror(BIO_R_UNABLE_TO_LISTEN_SOCKET)ERR_put_error(32,(0xfff),(119),"/usr/src/lib/libcrypto/bio/b_sock.c" ,182); |
| 183 | goto err; |
| 184 | } |
| 185 | ret = 1; |
| 186 | |
| 187 | err: |
| 188 | free(str); |
| 189 | if (res != NULL((void*)0)) |
| 190 | freeaddrinfo(res); |
| 191 | if ((ret == 0) && (s != -1)) { |
| 192 | close(s); |
| 193 | s = -1; |
| 194 | } |
| 195 | return (s); |
| 196 | } |
| 197 | |
| 198 | int |
| 199 | BIO_accept(int sock, char **addr) |
| 200 | { |
| 201 | char h[NI_MAXHOST256], s[NI_MAXSERV32]; |
| 202 | struct sockaddr_in sin; |
| 203 | socklen_t sin_len = sizeof(sin); |
| 204 | int ret = -1; |
| 205 | |
| 206 | if (addr == NULL((void*)0)) |
| 207 | goto end; |
| 208 | |
| 209 | ret = accept(sock, (struct sockaddr *)&sin, &sin_len); |
| 210 | if (ret == -1) { |
| 211 | if (BIO_sock_should_retry(ret)) |
| 212 | return -2; |
| 213 | SYSerror(errno)ERR_put_error(2,(0xfff),((*__errno())),"/usr/src/lib/libcrypto/bio/b_sock.c" ,213); |
| 214 | BIOerror(BIO_R_ACCEPT_ERROR)ERR_put_error(32,(0xfff),(100),"/usr/src/lib/libcrypto/bio/b_sock.c" ,214); |
| 215 | goto end; |
| 216 | } |
| 217 | /* XXX Crazy API. Can't be helped */ |
| 218 | if (*addr != NULL((void*)0)) { |
| 219 | free(*addr); |
| 220 | *addr = NULL((void*)0); |
| 221 | } |
| 222 | |
| 223 | if (sin.sin_family != AF_INET2) |
| 224 | goto end; |
| 225 | |
| 226 | if (getnameinfo((struct sockaddr *)&sin, sin_len, h, sizeof(h), |
| 227 | s, sizeof(s), NI_NUMERICHOST1|NI_NUMERICSERV2) != 0) |
| 228 | goto end; |
| 229 | |
| 230 | if ((asprintf(addr, "%s:%s", h, s)) == -1) { |
| 231 | BIOerror(ERR_R_MALLOC_FAILURE)ERR_put_error(32,(0xfff),((1|64)),"/usr/src/lib/libcrypto/bio/b_sock.c" ,231); |
| 232 | *addr = NULL((void*)0); |
| 233 | goto end; |
| 234 | } |
| 235 | end: |
| 236 | return (ret); |
| 237 | } |
| 238 | |
| 239 | int |
| 240 | BIO_set_tcp_ndelay(int s, int on) |
| 241 | { |
| 242 | return (setsockopt(s, IPPROTO_TCP6, TCP_NODELAY0x01, &on, sizeof(on)) == 0); |
| 243 | } |