1 /* 2 * ustream-ssl - library for SSL over ustream 3 * 4 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org> 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <string.h> 20 21 #include <libubox/ustream.h> 22 23 #include "ustream-ssl.h" 24 #include "ustream-internal.h" 25 26 static int s_ustream_read(char *buf, int len, void *ctx) 27 { 28 struct ustream *s = ctx; 29 char *sbuf; 30 int slen; 31 32 if (s->eof) 33 return -3; 34 35 sbuf = ustream_get_read_buf(s, &slen); 36 if (slen > len) 37 slen = len; 38 39 if (!slen) 40 return -2; 41 42 memcpy(buf, sbuf, slen); 43 ustream_consume(s, slen); 44 45 return slen; 46 } 47 48 static int s_ustream_write(char *buf, int len, void *ctx) 49 { 50 struct ustream *s = ctx; 51 52 if (s->write_error) 53 return len; 54 55 return ustream_write(s, buf, len, false); 56 } 57 58 static int io_recv_cb(SSL* ssl, char *buf, int sz, void *ctx) 59 { 60 return s_ustream_read(buf, sz, ctx); 61 } 62 63 static int io_send_cb(SSL* ssl, char *buf, int sz, void *ctx) 64 { 65 return s_ustream_write(buf, sz, ctx); 66 } 67 68 __hidden void ustream_set_io(struct ustream_ssl *us) 69 { 70 if (!us->conn) { 71 wolfSSL_set_fd(us->ssl, us->fd.fd); 72 return; 73 } 74 75 wolfSSL_SSLSetIORecv(us->ssl, io_recv_cb); 76 wolfSSL_SSLSetIOSend(us->ssl, io_send_cb); 77 wolfSSL_SetIOReadCtx(us->ssl, us->conn); 78 wolfSSL_SetIOWriteCtx(us->ssl, us->conn); 79 } 80
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