EnigmA Amiga Run 1996 March/EnigmA AMIGA RUN 05 (1996)(G.R. Edizioni)(IT)[!][issue 1996-03][Skylink CD IV].iso/earcd/comm2/pop3get.lha/pop3get.c

C/C++ Source or Header | 1995-08-21 | 4KB | 210 lines

/*
**    POP3GET.c
**
**  Simple POP3 Get utility
**
**  Requires "RMail" to be in the path and executable (tested
**  with ASMail only)
**
**  (C) 1995 Oliver Wagner ([e-mail]),
**  Public Domain
**
**  No warranties.
**
**  To be compiled with SAS/C 6.50.
**
*/

#define __USE_SYSBASE
#include <proto/exec.h>
#include <proto/dos.h>
#include <dos/dostags.h>
#include <dos/stdio.h>
#include <string.h>

#include "rev.h"

#define min __builtin_min

char version[] = { "$VER: Pop3Get " VERTAG };

struct myargs {
    char *host;
    char *port;
    char *user;
    char *pass;
    ULONG nodelete;
} myargs;

long __oslibversion = 37;

//    sprintf() replacement
static UWORD fmtfunc[] = { 0x16c0, 0x4e75 };
static void __stdargs sprintf( char *to, char *fmt, ... )
{
    RawDoFmt( fmt, &fmt + 1, (APTR)fmtfunc, to );
}

static void clnl( char *p )
{
    p = stpbrk( p, "\r\n" );
    if( p )
        *p = 0;
}

char buffer[ 512 ];
BPTR sock; // :-)

// This is the tricky one
static int doxfer( void )
{
    int c;
    int len;
    BPTR f;
    char *tmpname;
    char toline[ 512 ], *top;

    for( c = 1; ; c++ )
    {
        int inheader = TRUE;
        char *p;

        top = toline;
        *top = 0;

        FPrintf( sock, "RETR %ld\n", c );
        if( !FGets( sock, buffer, sizeof( buffer ) ) )
            return( 10 );
        if( strnicmp( buffer, "+OK", 3 ) )
            break;
        len = atoi( &buffer[ 4 ] );
        Printf( "Retrieving mail #%ld, %ld bytes...\n", c, len );

        tmpname = len > 32768 ? "pop3get.tmp" : "T:pop3get.tmp";

        f = Open( tmpname, MODE_NEWFILE );
        if( !f )
        {
            Printf( "*ALERT* Unable to open \"%s\"; IoErr = %ld, exiting...\n", tmpname, IoErr() );
        }
        SetVBuf( f, NULL, BUF_FULL, 8192 );
        for(;;)
        {
            if( !FGets( sock, buffer, sizeof( buffer ) ) )
            {
                Printf( "*ALERT* Receive error during RETR!\n" );
                Close( f );
                DeleteFile( tmpname );
                return( 10 );
            }

            clnl( buffer );
            if( !strcmp( buffer, "." ) )
                break;    // EOM
            FWrite( f, buffer, strlen( buffer ), 1 );
            FPutC( f, '\n' );

            if( !buffer[ 0 ] )
                inheader = FALSE;

            if( inheader )
            {
                if( !strnicmp( buffer, "To:", 3 ) )
                {
                    p = strtok( buffer, " ,\t<>" );
                    while( p )
                    {
                        char *p2;
                        p2 = strchr( p, '@' );
                        if( p2 )
                        {
                            char *p3 = p;
                            while( *p3 != '@' )
                                *top++ = *p3++;
                            *top++ = ' ';
                        }
                        else
                        {
                            p2 = strchr( p, '!' );
                            if( p2 )
                            {
                                strcpy( top, p2 + 1 );
                                top = strchr( top, 0 );
                                *top++ = ' ';
                            }
                        }
                        p = strtok( NULL, " ,\t" );
                    }
                }
            }
        }

        if( top > toline )
            top[ - 1 ] = 0;
        else
            strcpy( toline, "No-To-Found" );

        Close( f );
        Printf( "Msg #%ld to \"%s\", sending...\n", c, toline );
        sprintf( buffer, "RMail <%s %s", tmpname, toline );
        SystemTags( buffer, TAG_DONE );
        DeleteFile( tmpname );

        if( !myargs.nodelete )
        {
            Printf( "Deleting message #%ld...\n", c );
            FPrintf( sock, "DELE %ld\n", c );
            FGets( sock, buffer, sizeof( buffer ) );
        }
    }
    Printf( "finished transaction; got %ld mails total.\n", c - 1 );
    return( c == 1 ? 5 : 0 );
}

void __stdargs __main( char *dummy )
{
    struct RDArgs *rda;
    int rc = 10;

    Printf( "%s written by Oliver Wagner ([e-mail])\n", &version[ 6 ] );

    myargs.port = "110";
    rda = ReadArgs( "Host/A,Port/K,Username=USER/A,Password=PASS/A,NoDelete/S", (LONG*)&myargs, NULL );
    if( !rda )
    {
        PrintFault( IoErr(), "Pop3Get" );
        exit( 10 );
    }

    sprintf( buffer, "TCP:%s/%s", myargs.host, myargs.port );
    Printf( "Attempting connection to host \"%s\" on port %s...\n", myargs.host, myargs.port );
    sock = Open( buffer, MODE_NEWFILE );
    if( sock )
    {
        int okcount = 0;

        PutStr( "Connection established, now doing login.\n" );
        FPrintf( sock, "USER %s\nPASS %s\n", myargs.user, myargs.pass );

        // We're looking for the third OK (nifty, eh? :-)
        while( okcount < 3 && FGets( sock, buffer, sizeof( buffer ) ) )
        {
            clnl( buffer );
            Printf( "got: '%s'\n", buffer );
            if( !strnicmp( buffer, "+OK", 3 ) )
                okcount++;
            else if( !strnicmp( buffer, "-ERR", 4 ) )
                break;
        }
        if( okcount == 3 )
        {
            rc = doxfer();
            FPrintf( sock, "QUIT\n" );
        }
    }
    else
        Printf( "Unable to connect, error %ld.\n", IoErr() );
    FreeArgs( rda );
    exit( rc );
}