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/*
* An demo illustrating how to retrieve a URI from a secure HTTP server.
*
* Author: Roy Wood
* Date: September 7, 1999
* Comments: This relies heavily on my MacSockets library.
* This project is also set up so that it expects the OpenSSL source folder (0.9.4 as I write this)
* to live in a folder called "OpenSSL-0.9.4" in this project's parent folder. For example:
*
* Macintosh HD:
* Development:
* OpenSSL-0.9.4:
* (OpenSSL sources here)
* OpenSSL Example:
* (OpenSSL example junk here)
*
*
* Also-- before attempting to compile this, make sure the aliases in "OpenSSL-0.9.4:include:openssl"
* are installed! Use the AppleScript applet in the "openssl-0.9.4" folder to do this!
*/
// Include some funky libs I've developed over time
#include "CPStringUtils.hpp"
#include "ErrorHandling.hpp"
#include "MacSocket.h"
// We use the OpenSSL implementation of SSL....
// This was a lot of work to finally get going, though you wouldn't know it by the results!
#include <openssl/ssl.h>
#include <openssl/err.h>
// Let's try grabbing some data from here:
#define kHTTPS_DNS "www.apache-ssl.org"
#define kHTTPS_Port 443
#define kHTTPS_URI "/"
// Forward-declare this
OSErr MyMacSocket_IdleWaitCallback(void *inUserRefPtr);
// My idle-wait callback. Doesn't do much, does it? Silly cooperative multitasking.
OSErr MyMacSocket_IdleWaitCallback(void *inUserRefPtr)
{
#pragma unused(inUserRefPtr)
EventRecord theEvent;
::EventAvail(everyEvent,&theEvent);
return(noErr);
}
// Finally!
void main(void)
{
OSErr errCode;
int theSocket = -1;
int theTimeout = 30;
SSL_CTX *ssl_ctx = nil;
SSL *ssl = nil;
char tempString[256];
printf("OpenSSL Demo by Roy Wood, roy@centricsystems.ca\n\n");
BailIfError(errCode = MacSocket_Startup());
// Create a socket-like object
BailIfError(errCode = MacSocket_socket(&theSocket,false,theTimeout * 60,MyMacSocket_IdleWaitCallback,nil));
// Set up the connect string and try to connect
CopyCStrAndInsertCStrLongIntIntoCStr("%s:%ld",kHTTPS_DNS,kHTTPS_Port,tempString,sizeof(tempString));
printf("Connecting to %s....\n",tempString);
BailIfError(errCode = MacSocket_connect(theSocket,tempString));
// Init SSL stuff
SSL_load_error_strings();
SSLeay_add_ssl_algorithms();
// Pick the SSL method
// ssl_ctx = SSL_CTX_new(SSLv2_client_method());
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
// ssl_ctx = SSL_CTX_new(SSLv3_client_method());
// Create an SSL thingey and try to negotiate the connection
ssl = SSL_new(ssl_ctx);
SSL_set_fd(ssl,theSocket);
errCode = SSL_connect(ssl);
if (errCode < 0)
{
SetErrorMessageAndLongIntAndBail("OpenSSL: Can't initiate SSL connection, SSL_connect() = ",errCode);
}
// Request the URI from the host
CopyCStrToCStr("GET ",tempString,sizeof(tempString));
ConcatCStrToCStr(kHTTPS_URI,tempString,sizeof(tempString));
ConcatCStrToCStr(" HTTP/1.0\r\n\r\n",tempString,sizeof(tempString));
errCode = SSL_write(ssl,tempString,CStrLength(tempString));
if (errCode < 0)
{
SetErrorMessageAndLongIntAndBail("OpenSSL: Error writing data via ssl, SSL_write() = ",errCode);
}
for (;;)
{
char tempString[256];
int bytesRead;
// Read some bytes and dump them to the console
bytesRead = SSL_read(ssl,tempString,sizeof(tempString) - 1);
if (bytesRead == 0 && MacSocket_RemoteEndIsClosing(theSocket))
{
break;
}
else if (bytesRead < 0)
{
SetErrorMessageAndLongIntAndBail("OpenSSL: Error reading data via ssl, SSL_read() = ",bytesRead);
}
tempString[bytesRead] = '\0';
printf(tempString);
}
printf("\n\n\n");
// All done!
errCode = noErr;
EXITPOINT:
// Clean up and go home
if (theSocket >= 0)
{
MacSocket_close(theSocket);
}
if (ssl != nil)
{
SSL_free(ssl);
}
if (ssl_ctx != nil)
{
SSL_CTX_free(ssl_ctx);
}
if (errCode != noErr)
{
printf("An error occurred:\n");
printf(GetErrorMessage());
}
MacSocket_Shutdown();
}
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