The Tor Browser / file comparison
comparison: security/nss/lib/ssl/ssldef.c
security/nss/lib/ssl/ssldef.c
- branch
- TOR_BUG_3246
- changeset 5
- 4ab42b5ab56c
equal
deleted
inserted
replaced
| -1:000000000000 | 0:960ec50b9597 |
|---|---|
| 1 /* | |
| 2 * "Default" SSLSocket methods, used by sockets that do neither SSL nor socks. | |
| 3 * | |
| 4 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include "cert.h" | |
| 9 #include "ssl.h" | |
| 10 #include "sslimpl.h" | |
| 11 | |
| 12 #if defined(WIN32) | |
| 13 #define MAP_ERROR(from,to) if (err == from) { PORT_SetError(to); } | |
| 14 #define DEFINE_ERROR PRErrorCode err = PR_GetError(); | |
| 15 #else | |
| 16 #define MAP_ERROR(from,to) | |
| 17 #define DEFINE_ERROR | |
| 18 #endif | |
| 19 | |
| 20 int ssl_DefConnect(sslSocket *ss, const PRNetAddr *sa) | |
| 21 { | |
| 22 PRFileDesc *lower = ss->fd->lower; | |
| 23 int rv; | |
| 24 | |
| 25 rv = lower->methods->connect(lower, sa, ss->cTimeout); | |
| 26 return rv; | |
| 27 } | |
| 28 | |
| 29 int ssl_DefBind(sslSocket *ss, const PRNetAddr *addr) | |
| 30 { | |
| 31 PRFileDesc *lower = ss->fd->lower; | |
| 32 int rv; | |
| 33 | |
| 34 rv = lower->methods->bind(lower, addr); | |
| 35 return rv; | |
| 36 } | |
| 37 | |
| 38 int ssl_DefListen(sslSocket *ss, int backlog) | |
| 39 { | |
| 40 PRFileDesc *lower = ss->fd->lower; | |
| 41 int rv; | |
| 42 | |
| 43 rv = lower->methods->listen(lower, backlog); | |
| 44 return rv; | |
| 45 } | |
| 46 | |
| 47 int ssl_DefShutdown(sslSocket *ss, int how) | |
| 48 { | |
| 49 PRFileDesc *lower = ss->fd->lower; | |
| 50 int rv; | |
| 51 | |
| 52 rv = lower->methods->shutdown(lower, how); | |
| 53 return rv; | |
| 54 } | |
| 55 | |
| 56 int ssl_DefRecv(sslSocket *ss, unsigned char *buf, int len, int flags) | |
| 57 { | |
| 58 PRFileDesc *lower = ss->fd->lower; | |
| 59 int rv; | |
| 60 | |
| 61 rv = lower->methods->recv(lower, (void *)buf, len, flags, ss->rTimeout); | |
| 62 if (rv < 0) { | |
| 63 DEFINE_ERROR | |
| 64 MAP_ERROR(PR_SOCKET_SHUTDOWN_ERROR, PR_CONNECT_RESET_ERROR) | |
| 65 } else if (rv > len) { | |
| 66 PORT_Assert(rv <= len); | |
| 67 PORT_SetError(PR_BUFFER_OVERFLOW_ERROR); | |
| 68 rv = SECFailure; | |
| 69 } | |
| 70 return rv; | |
| 71 } | |
| 72 | |
| 73 /* Default (unencrypted) send. | |
| 74 * For blocking sockets, always returns len or SECFailure, no short writes. | |
| 75 * For non-blocking sockets: | |
| 76 * Returns positive count if any data was written, else returns SECFailure. | |
| 77 * Short writes may occur. Does not return SECWouldBlock. | |
| 78 */ | |
| 79 int ssl_DefSend(sslSocket *ss, const unsigned char *buf, int len, int flags) | |
| 80 { | |
| 81 PRFileDesc *lower = ss->fd->lower; | |
| 82 int sent = 0; | |
| 83 | |
| 84 #if NSS_DISABLE_NAGLE_DELAYS | |
| 85 /* Although this is overkill, we disable Nagle delays completely for | |
| 86 ** SSL sockets. | |
| 87 */ | |
| 88 if (ss->opt.useSecurity && !ss->delayDisabled) { | |
| 89 ssl_EnableNagleDelay(ss, PR_FALSE); /* ignore error */ | |
| 90 ss->delayDisabled = 1; | |
| 91 } | |
| 92 #endif | |
| 93 do { | |
| 94 int rv = lower->methods->send(lower, (const void *)(buf + sent), | |
| 95 len - sent, flags, ss->wTimeout); | |
| 96 if (rv < 0) { | |
| 97 PRErrorCode err = PR_GetError(); | |
| 98 if (err == PR_WOULD_BLOCK_ERROR) { | |
| 99 ss->lastWriteBlocked = 1; | |
| 100 return sent ? sent : SECFailure; | |
| 101 } | |
| 102 ss->lastWriteBlocked = 0; | |
| 103 MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR) | |
| 104 /* Loser */ | |
| 105 return rv; | |
| 106 } | |
| 107 sent += rv; | |
| 108 | |
| 109 if (IS_DTLS(ss) && (len > sent)) { | |
| 110 /* We got a partial write so just return it */ | |
| 111 return sent; | |
| 112 } | |
| 113 } while (len > sent); | |
| 114 ss->lastWriteBlocked = 0; | |
| 115 return sent; | |
| 116 } | |
| 117 | |
| 118 int ssl_DefRead(sslSocket *ss, unsigned char *buf, int len) | |
| 119 { | |
| 120 PRFileDesc *lower = ss->fd->lower; | |
| 121 int rv; | |
| 122 | |
| 123 rv = lower->methods->read(lower, (void *)buf, len); | |
| 124 if (rv < 0) { | |
| 125 DEFINE_ERROR | |
| 126 MAP_ERROR(PR_SOCKET_SHUTDOWN_ERROR, PR_CONNECT_RESET_ERROR) | |
| 127 } | |
| 128 return rv; | |
| 129 } | |
| 130 | |
| 131 int ssl_DefWrite(sslSocket *ss, const unsigned char *buf, int len) | |
| 132 { | |
| 133 PRFileDesc *lower = ss->fd->lower; | |
| 134 int sent = 0; | |
| 135 | |
| 136 do { | |
| 137 int rv = lower->methods->write(lower, (const void *)(buf + sent), | |
| 138 len - sent); | |
| 139 if (rv < 0) { | |
| 140 PRErrorCode err = PR_GetError(); | |
| 141 if (err == PR_WOULD_BLOCK_ERROR) { | |
| 142 ss->lastWriteBlocked = 1; | |
| 143 return sent ? sent : SECFailure; | |
| 144 } | |
| 145 ss->lastWriteBlocked = 0; | |
| 146 MAP_ERROR(PR_CONNECT_ABORTED_ERROR, PR_CONNECT_RESET_ERROR) | |
| 147 /* Loser */ | |
| 148 return rv; | |
| 149 } | |
| 150 sent += rv; | |
| 151 } while (len > sent); | |
| 152 ss->lastWriteBlocked = 0; | |
| 153 return sent; | |
| 154 } | |
| 155 | |
| 156 int ssl_DefGetpeername(sslSocket *ss, PRNetAddr *name) | |
| 157 { | |
| 158 PRFileDesc *lower = ss->fd->lower; | |
| 159 int rv; | |
| 160 | |
| 161 rv = lower->methods->getpeername(lower, name); | |
| 162 return rv; | |
| 163 } | |
| 164 | |
| 165 int ssl_DefGetsockname(sslSocket *ss, PRNetAddr *name) | |
| 166 { | |
| 167 PRFileDesc *lower = ss->fd->lower; | |
| 168 int rv; | |
| 169 | |
| 170 rv = lower->methods->getsockname(lower, name); | |
| 171 return rv; | |
| 172 } | |
| 173 | |
| 174 int ssl_DefClose(sslSocket *ss) | |
| 175 { | |
| 176 PRFileDesc *fd; | |
| 177 PRFileDesc *popped; | |
| 178 int rv; | |
| 179 | |
| 180 fd = ss->fd; | |
| 181 | |
| 182 /* First, remove the SSL layer PRFileDesc from the socket's stack, | |
| 183 ** then invoke the SSL layer's PRFileDesc destructor. | |
| 184 ** This must happen before the next layer down is closed. | |
| 185 */ | |
| 186 PORT_Assert(fd->higher == NULL); | |
| 187 if (fd->higher) { | |
| 188 PORT_SetError(PR_BAD_DESCRIPTOR_ERROR); | |
| 189 return SECFailure; | |
| 190 } | |
| 191 ss->fd = NULL; | |
| 192 | |
| 193 /* PR_PopIOLayer will swap the contents of the top two PRFileDescs on | |
| 194 ** the stack, and then remove the second one. This way, the address | |
| 195 ** of the PRFileDesc on the top of the stack doesn't change. | |
| 196 */ | |
| 197 popped = PR_PopIOLayer(fd, PR_TOP_IO_LAYER); | |
| 198 popped->dtor(popped); | |
| 199 | |
| 200 /* fd is now the PRFileDesc for the next layer down. | |
| 201 ** Now close the underlying socket. | |
| 202 */ | |
| 203 rv = fd->methods->close(fd); | |
| 204 | |
| 205 ssl_FreeSocket(ss); | |
| 206 | |
| 207 SSL_TRC(5, ("%d: SSL[%d]: closing, rv=%d errno=%d", | |
| 208 SSL_GETPID(), fd, rv, PORT_GetError())); | |
| 209 return rv; | |
| 210 } |
