Todd Ouska / Mbed 2 deprecated cyassl-client

Example CyaSSL SSL client connects to SSL server

Dependencies:   EthernetNetIf mbed CyaSSL

main.cpp@0:32e3f3831d3a, 2011-02-05 (annotated)

Committer:
toddouska
Date:
Sat Feb 05 01:28:02 2011 +0000
Revision:
0:32e3f3831d3a
Beta Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
toddouska 0:32e3f3831d3a 1 #include "mbed.h"
toddouska 0:32e3f3831d3a 2 #include "EthernetNetIf.h"
toddouska 0:32e3f3831d3a 3 #include "TCPSocket.h"
toddouska 0:32e3f3831d3a 4 #include "ssl.h"
toddouska 0:32e3f3831d3a 5
toddouska 0:32e3f3831d3a 6
toddouska 0:32e3f3831d3a 7 /* CyaSSL example client
toddouska 0:32e3f3831d3a 8
toddouska 0:32e3f3831d3a 9 This example uses a static IP Address of 192.168.2.4
toddouska 0:32e3f3831d3a 10 Change that in the eth variable if yours is different
toddouska 0:32e3f3831d3a 11
toddouska 0:32e3f3831d3a 12 If you're using dhcp uncomment the dhcp line and comment out the static ip
toddouska 0:32e3f3831d3a 13
toddouska 0:32e3f3831d3a 14 This example assumes the SSL server is at 10.0.1.2 on port 11111
toddouska 0:32e3f3831d3a 15 Change those in the main loop if yours is differnt
toddouska 0:32e3f3831d3a 16
toddouska 0:32e3f3831d3a 17 The example connects and then writes "secure hello from mbed" to server
toddouska 0:32e3f3831d3a 18 Any repsonse will written to stdout
toddouska 0:32e3f3831d3a 19
toddouska 0:32e3f3831d3a 20 */
toddouska 0:32e3f3831d3a 21
toddouska 0:32e3f3831d3a 22 //EthernetNetIf eth; // dhcp
toddouska 0:32e3f3831d3a 23
toddouska 0:32e3f3831d3a 24 EthernetNetIf eth(
toddouska 0:32e3f3831d3a 25 IpAddr(192,168,2,4), //IP Address
toddouska 0:32e3f3831d3a 26 IpAddr(255,255,255,0), //Network Mask
toddouska 0:32e3f3831d3a 27 IpAddr(192,168,2,1), //Gateway
toddouska 0:32e3f3831d3a 28 IpAddr(192,168,2,1) //DNS
toddouska 0:32e3f3831d3a 29 );
toddouska 0:32e3f3831d3a 30
toddouska 0:32e3f3831d3a 31
toddouska 0:32e3f3831d3a 32 TCPSocket sock;
toddouska 0:32e3f3831d3a 33 SSL_CTX* ctx = 0;
toddouska 0:32e3f3831d3a 34 SSL* ssl = 0;
toddouska 0:32e3f3831d3a 35 int SSL_connected = 0;
toddouska 0:32e3f3831d3a 36
toddouska 0:32e3f3831d3a 37
toddouska 0:32e3f3831d3a 38
toddouska 0:32e3f3831d3a 39 int recvf(char* buf, int sz, void* vp)
toddouska 0:32e3f3831d3a 40 {
toddouska 0:32e3f3831d3a 41 int got = sock.recv(buf, sz);
toddouska 0:32e3f3831d3a 42
toddouska 0:32e3f3831d3a 43 if (got == 0)
toddouska 0:32e3f3831d3a 44 return -2; // IO_ERR_WANT_READ;
toddouska 0:32e3f3831d3a 45
toddouska 0:32e3f3831d3a 46 return got;
toddouska 0:32e3f3831d3a 47 }
toddouska 0:32e3f3831d3a 48
toddouska 0:32e3f3831d3a 49
toddouska 0:32e3f3831d3a 50 int sendf(char* buf, int sz, void* vp)
toddouska 0:32e3f3831d3a 51 {
toddouska 0:32e3f3831d3a 52
toddouska 0:32e3f3831d3a 53 int sent = sock.send(buf, sz);
toddouska 0:32e3f3831d3a 54
toddouska 0:32e3f3831d3a 55 if (sent == 0)
toddouska 0:32e3f3831d3a 56 return -2; // IO_ERR_WANT_WRITE
toddouska 0:32e3f3831d3a 57
toddouska 0:32e3f3831d3a 58 return sent;
toddouska 0:32e3f3831d3a 59 }
toddouska 0:32e3f3831d3a 60
toddouska 0:32e3f3831d3a 61
toddouska 0:32e3f3831d3a 62 void err_str(const char* from, SSL* ssl)
toddouska 0:32e3f3831d3a 63 {
toddouska 0:32e3f3831d3a 64 int err;
toddouska 0:32e3f3831d3a 65 char str[80];
toddouska 0:32e3f3831d3a 66
toddouska 0:32e3f3831d3a 67 printf("got error from %s\n", from);
toddouska 0:32e3f3831d3a 68 err = SSL_get_error(ssl, 0);
toddouska 0:32e3f3831d3a 69 if (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE)
toddouska 0:32e3f3831d3a 70 printf("non-blocking IO couldn't complete, will continue when can\n");
toddouska 0:32e3f3831d3a 71 else
toddouska 0:32e3f3831d3a 72 printf("err = %d, %s\n", err, ERR_error_string(err, str));
toddouska 0:32e3f3831d3a 73 }
toddouska 0:32e3f3831d3a 74
toddouska 0:32e3f3831d3a 75
toddouska 0:32e3f3831d3a 76 void onTCPSocketEvent(TCPSocketEvent e)
toddouska 0:32e3f3831d3a 77 {
toddouska 0:32e3f3831d3a 78 int err;
toddouska 0:32e3f3831d3a 79 char buffer[1024];
toddouska 0:32e3f3831d3a 80
toddouska 0:32e3f3831d3a 81 switch (e) {
toddouska 0:32e3f3831d3a 82 case TCPSOCKET_CONNECTED :
toddouska 0:32e3f3831d3a 83 printf("we connected\n");
toddouska 0:32e3f3831d3a 84
toddouska 0:32e3f3831d3a 85 ctx = SSL_CTX_new(TLSv1_client_method());
toddouska 0:32e3f3831d3a 86
toddouska 0:32e3f3831d3a 87 if (ctx == 0) {
toddouska 0:32e3f3831d3a 88 printf("oops, bad SSL ctx\n");
toddouska 0:32e3f3831d3a 89 break;
toddouska 0:32e3f3831d3a 90 }
toddouska 0:32e3f3831d3a 91
toddouska 0:32e3f3831d3a 92 SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, 0);
toddouska 0:32e3f3831d3a 93
toddouska 0:32e3f3831d3a 94 CyaSSL_SetIORecv(ctx, recvf);
toddouska 0:32e3f3831d3a 95 CyaSSL_SetIOSend(ctx, sendf);
toddouska 0:32e3f3831d3a 96
toddouska 0:32e3f3831d3a 97
toddouska 0:32e3f3831d3a 98 ssl = SSL_new(ctx);
toddouska 0:32e3f3831d3a 99
toddouska 0:32e3f3831d3a 100 if (ssl == 0) {
toddouska 0:32e3f3831d3a 101 printf("oops, bad SSL ptr\n");
toddouska 0:32e3f3831d3a 102 break;
toddouska 0:32e3f3831d3a 103 }
toddouska 0:32e3f3831d3a 104
toddouska 0:32e3f3831d3a 105 CyaSSL_SetIOReadCtx(ssl, (void*)&sock);
toddouska 0:32e3f3831d3a 106 CyaSSL_SetIOWriteCtx(ssl, (void*)&sock);
toddouska 0:32e3f3831d3a 107 err = SSL_connect(ssl);
toddouska 0:32e3f3831d3a 108
toddouska 0:32e3f3831d3a 109 if (err != SSL_SUCCESS) {
toddouska 0:32e3f3831d3a 110 err_str("SSL connect", ssl);
toddouska 0:32e3f3831d3a 111 }
toddouska 0:32e3f3831d3a 112 break;
toddouska 0:32e3f3831d3a 113
toddouska 0:32e3f3831d3a 114 case TCPSOCKET_READABLE :
toddouska 0:32e3f3831d3a 115 printf("we're readable\n");
toddouska 0:32e3f3831d3a 116
toddouska 0:32e3f3831d3a 117 if (SSL_connected == 0) {
toddouska 0:32e3f3831d3a 118 err = SSL_connect(ssl);
toddouska 0:32e3f3831d3a 119 if (err < 0) {
toddouska 0:32e3f3831d3a 120 err_str("SSL connect", ssl);
toddouska 0:32e3f3831d3a 121 }
toddouska 0:32e3f3831d3a 122 else {
toddouska 0:32e3f3831d3a 123 const char msg[] = "secure hello from mbed\n";
toddouska 0:32e3f3831d3a 124 SSL_connected = 1;
toddouska 0:32e3f3831d3a 125 printf("we did SSL connect!\n");
toddouska 0:32e3f3831d3a 126 err = SSL_write(ssl, msg, sizeof(msg));
toddouska 0:32e3f3831d3a 127 if (err < 0) {
toddouska 0:32e3f3831d3a 128 err_str("SSL wirte", ssl);
toddouska 0:32e3f3831d3a 129 }
toddouska 0:32e3f3831d3a 130 }
toddouska 0:32e3f3831d3a 131 } else {
toddouska 0:32e3f3831d3a 132 err = SSL_read(ssl, buffer, sizeof(buffer));
toddouska 0:32e3f3831d3a 133 if (err < 0) {
toddouska 0:32e3f3831d3a 134 err_str("SSL read", ssl);
toddouska 0:32e3f3831d3a 135 }
toddouska 0:32e3f3831d3a 136 else {
toddouska 0:32e3f3831d3a 137 buffer[err] = 0;
toddouska 0:32e3f3831d3a 138 printf("got message %s\n", buffer);
toddouska 0:32e3f3831d3a 139 }
toddouska 0:32e3f3831d3a 140 }
toddouska 0:32e3f3831d3a 141 break;
toddouska 0:32e3f3831d3a 142
toddouska 0:32e3f3831d3a 143 case TCPSOCKET_WRITEABLE :
toddouska 0:32e3f3831d3a 144
toddouska 0:32e3f3831d3a 145 break;
toddouska 0:32e3f3831d3a 146
toddouska 0:32e3f3831d3a 147 default:
toddouska 0:32e3f3831d3a 148 printf("default, case e = %d\n", e);
toddouska 0:32e3f3831d3a 149 break;
toddouska 0:32e3f3831d3a 150 }
toddouska 0:32e3f3831d3a 151 }
toddouska 0:32e3f3831d3a 152
toddouska 0:32e3f3831d3a 153
toddouska 0:32e3f3831d3a 154
toddouska 0:32e3f3831d3a 155 int main() {
toddouska 0:32e3f3831d3a 156
toddouska 0:32e3f3831d3a 157 EthernetErr ethErr = eth.setup();
toddouska 0:32e3f3831d3a 158 if(ethErr)
toddouska 0:32e3f3831d3a 159 {
toddouska 0:32e3f3831d3a 160 printf("Error %d in setup.\n", ethErr);
toddouska 0:32e3f3831d3a 161 return -1;
toddouska 0:32e3f3831d3a 162 }
toddouska 0:32e3f3831d3a 163 printf("\r\nSetup OK\r\n");
toddouska 0:32e3f3831d3a 164
toddouska 0:32e3f3831d3a 165 sock.setOnEvent(&onTCPSocketEvent);
toddouska 0:32e3f3831d3a 166
toddouska 0:32e3f3831d3a 167 Host server(IpAddr(10,0,1,2), 11111);
toddouska 0:32e3f3831d3a 168 TCPSocketErr bindErr = sock.connect(server);
toddouska 0:32e3f3831d3a 169
toddouska 0:32e3f3831d3a 170 printf("socket connect ret = %d\n", bindErr);
toddouska 0:32e3f3831d3a 171
toddouska 0:32e3f3831d3a 172
toddouska 0:32e3f3831d3a 173 while(1) {
toddouska 0:32e3f3831d3a 174 Net::poll();
toddouska 0:32e3f3831d3a 175 }
toddouska 0:32e3f3831d3a 176 }