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;/* sendnote.c - Execute to compile with SAS/C 6.56
sc DATA=FAR NMINC STRMERGE STREQ NOSTKCHK SAVEDS IGNORE=73 sendnote.c
slink FROM LIB:c.o sendnote.o TO sendnote LIBRARY LIB:sc.lib LIB:amiga.lib
quit
*/
/* (c) Copyright 1992-1999 Amiga, Inc. All rights reserved. */
/* The information contained herein is subject to change without */
/* notice, and is provided "as is" without warranty of any kind, */
/* either expressed or implied. The entire risk as to the use of */
/* this information is assumed by the user. */
/*
** Our Application Prototypes (specific to notes.c file)
*/
void main( int, char ** );
void FinalExit( int );
/*
** Application-specific defines and globals
*/
char Version[] = "\0$VER: SendNote 1.2 (1.12.91)";
#define TEMPLATE "Host/A,Text,Button"
#define OPT_HOST 0
#define OPT_TEXT 1
#define OPT_BUTTON 2
#define OPT_COUNT 3
/*
** The library bases...we need em later...
*/
struct Library *IntuitionBase, *SockBase;
/*
** All other includes and protos are indexed off our catch-all file
** note.h which both the client (sendnote.c) and server (shownote.c)
** include.
*/
#include "note.h"
void main(int argc, char **argv)
{
struct RDArgs *rdargs; /* ReadArgs() return information */
struct sockaddr_in serv; /* Server's Internet Address */
struct hostent *host; /* The located host info */
struct NetNote out; /* Message packet for send/recv */
long opts[OPT_COUNT] = {
0L,
(long)"== PING! ==",
(long)"OK"
};
int sock; /* The working socket */
char *hostnam, /* Arg of hostname */
*text, /* Arg of text to be sent */
*button; /* Arg of button text */
/*
** Process arguments using new (2.0) dos calls.
*/
rdargs = (struct RDArgs *)ReadArgs( (UBYTE *)TEMPLATE, opts, NULL );
if(rdargs == NULL)
{
puts("Command line not accepted!");
FinalExit( RETURN_ERROR );
}
hostnam = (char *)opts[OPT_HOST];
text = (char *)opts[OPT_TEXT];
button = (char *)opts[OPT_BUTTON];
/*
** Open socket.library and intialize socket space
*/
if (SockBase = OpenLibrary("inet:libs/socket.library", 0L))
{
setup_sockets( 1, &errno );
}
else
{
puts("Can't open socket.library!");
FinalExit( RETURN_ERROR );
}
/*
** First we need to try and resolve the host machine as a
** normal IP/Internet address. If that fails, fall back to seaching
** the hosts file for it. Before anything, we need to clear out
** the buffer (serv) where the information will be placed, using
** the bzero() call (actually a macro in sys/types.h).
*/
bzero( &serv, sizeof(struct sockaddr_in) );
if ( (serv.sin_addr.s_addr = inet_addr(hostnam)) == INADDR_NONE )
{
/*
** Okay, the program wasnt handed a dotted decimal address,
** so we check and see if it was handed a machine name.
**
** NOTE: Grab the information you need before you use the
** gethostbyname() call again. Subsequent calls
** will overwrite the buffer it hands back.
*/
if ( (host = gethostbyname(hostnam)) == NULL )
{
printf("Host not found: %s\n",host);
FinalExit( RETURN_ERROR );
}
/*
** It does indeed have a name, so copy the addr field from the
** hostent structure into the sockaddr structure.
*/
bcopy( host->h_addr, (char *)&serv.sin_addr, host->h_length );
}
/*
** Following is commented out for ease of testing purposes! Normally, apps
** should obtain server numbers using this type of code and a matching entry
** in the inet:db/services file.
**
** {
** struct servent *servptr;
** char *servnam = APPNAME;
**
** *
** ** Open the INET:DB/SERVICES file and locate the server info
** ** by matching the name and service.
** *
**
** if ((servptr = getservbyname( servnam, "tcp" )) == NULL)
** {
** printf("%s not in inet:db/services list!",servnam);
** FinalExit( RETURN_ERROR );
** }
** serv.sin_port = servptr->s_port;
** }
**
*/
/*
** If you used the above code, you would remove this line:
*/
serv.sin_port = 8769;
/*
** This tells the system the socket in question is an Internet socket
*/
serv.sin_family = AF_INET;
/*
** Initialize the socket
*/
if ( (sock = socket( AF_INET, SOCK_STREAM, 0 )) < 0 )
{
printf("socket gen: %s\n", strerror(errno));
FinalExit( RETURN_ERROR );
}
/*
** Connect the socket to the remote socket, which belongs to the
** server, and which will "wake up" the server.
*/
if ( connect( sock,
(struct sockaddr *)&serv,
sizeof(struct sockaddr) ) < 0 )
{
printf("connect: %s\n", strerror(errno));
s_close( sock );
FinalExit( RETURN_ERROR );
}
/*
** Compose the message packet for transmission
*/
out.nn_Code = NN_MSG;
strcpy( (char *)&out.nn_Text, text );
strcpy( (char *)&out.nn_Button, button );
/*
** Send the packet to the remote system
*/
send( sock, (char *)&out, sizeof(struct NetNote), 0 );
printf("\nMessage sent to %s...waiting for answer...\n", hostnam );
/*
** Wait for either acknowledge or error. This is a potential hang
** location if the server is mortally wounded.
*/
recv( sock, (char *)&out, sizeof(struct NetNote), 0 );
/*
** Evaluate the packet returned to us
*/
if (out.nn_Code == NN_ACK)
{
printf("Response: Button %ld pressed.\n\n", out.nn_Retval );
}
else
{
puts("Error during message send...please try again later!");
FinalExit( RETURN_ERROR );
}
/*
** Since ReadArgs() was called inside the main() function, the pointer
** to the buffer it created needs to be deallocated inside main().
*/
if (rdargs)
{
FreeArgs( rdargs );
}
FinalExit( RETURN_OK );
}
/*
** FinalExit() - Non-returning routine which handles exits and cleanups.
**
**
*/
void FinalExit( int retcode )
{
/*
** If SockBase is non-null, it means that socket.library was opened,
** and a socket environment was initialized. Remove the environment
** and close the library.
*/
if (SockBase)
{
cleanup_sockets();
CloseLibrary(SockBase);
}
/*
** Terminate program, handing return code out to the shell handler
*/
exit( retcode );
}
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