2.9BSD - /usr/src/ucb/sendmail/aux/mconnect.c

   1: # include <stdio.h>
   2: # include <signal.h>
   3: # include <ctype.h>
   4: # include <sgtty.h>
   5: # include <sys/types.h>
   6: # include <sys/socket.h>
   7: # include <netinet/in.h>
   8: # include <netdb.h>
   9: 
  10: static char SccsId[] =  "@(#)mconnect.c	4.1		7/25/83";
  11: 
  12: struct sockaddr_in  SendmailAddress;
  13: struct sgttyb       TtyBuf;
  14: 
  15: main(argc, argv)
  16:     int argc;
  17:     char **argv;
  18: {
  19:     register int s;
  20:     char *host;
  21:     register int i;
  22:     int pid;
  23:     struct servent *sp;
  24:     int raw = 0;
  25:     char buf[1000];
  26:     register char *p;
  27:     extern char *index();
  28:     register FILE *f;
  29:     extern u_long inet_addr();
  30:     extern finis();
  31: 
  32:     (void) gtty(0, &TtyBuf);
  33:     (void) signal(SIGINT, finis);
  34:     s = socket(AF_INET, SOCK_STREAM, 0, 0);
  35:     if (s < 0)
  36:     {
  37:         perror("socket");
  38:         exit(-1);
  39:     }
  40: 
  41:     sp = getservbyname("smtp", "tcp");
  42:     if (sp != NULL)
  43:         SendmailAddress.sin_port = sp->s_port;
  44: 
  45:     while (--argc > 0)
  46:     {
  47:         register char *p = *++argv;
  48: 
  49:         if (*p == '-')
  50:         {
  51:             switch (*++p)
  52:             {
  53:               case 'h':     /* host */
  54:                 break;
  55: 
  56:               case 'p':     /* port */
  57:                 SendmailAddress.sin_port = htons(atoi(*++argv));
  58:                 argc--;
  59:                 break;
  60: 
  61:               case 'r':     /* raw connection */
  62:                 raw = 1;
  63:                 TtyBuf.sg_flags &= ~CRMOD;
  64:                 stty(0, &TtyBuf);
  65:                 TtyBuf.sg_flags |= CRMOD;
  66:                 break;
  67:             }
  68:         }
  69:         else if (host == NULL)
  70:             host = p;
  71:     }
  72:     if (host == NULL)
  73:         host = "localhost";
  74: 
  75:     if (isdigit(*host))
  76:         SendmailAddress.sin_addr.s_addr = inet_addr(host);
  77:     else
  78:     {
  79:         register struct hostent *hp = gethostbyname(host);
  80: 
  81:         if (hp == NULL)
  82:         {
  83:             fprintf(stderr, "mconnect: unknown host %s\r\n", host);
  84:             finis();
  85:         }
  86:         bcopy(hp->h_addr, &SendmailAddress.sin_addr, hp->h_length);
  87:     }
  88:     SendmailAddress.sin_family = AF_INET;
  89:     printf("connecting to host %s (0x%x), port 0x%x\r\n", host,
  90:            SendmailAddress.sin_addr.s_addr, SendmailAddress.sin_port);
  91:     if (connect(s, &SendmailAddress, sizeof SendmailAddress, 0) < 0)
  92:     {
  93:         perror("connect");
  94:         exit(-1);
  95:     }
  96: 
  97:     /* good connection, fork both sides */
  98:     printf("connection open\n");
  99:     pid = fork();
 100:     if (pid < 0)
 101:     {
 102:         perror("fork");
 103:         exit(-1);
 104:     }
 105:     if (pid == 0)
 106:     {
 107:         /* child -- standard input to sendmail */
 108:         int c;
 109: 
 110:         f = fdopen(s, "w");
 111:         while ((c = fgetc(stdin)) >= 0)
 112:         {
 113:             if (!raw && c == '\n')
 114:                 fputc('\r', f);
 115:             fputc(c, f);
 116:             if (c == '\n')
 117:                 fflush(f);
 118:         }
 119:     }
 120:     else
 121:     {
 122:         /* parent -- sendmail to standard output */
 123:         f = fdopen(s, "r");
 124:         while (fgets(buf, sizeof buf, f) != NULL)
 125:         {
 126:             fputs(buf, stdout);
 127:             fflush(stdout);
 128:         }
 129:     }
 130:     finis();
 131: }
 132: 
 133: finis()
 134: {
 135:     stty(0, &TtyBuf);
 136:     exit(0);
 137: }

Defined functions

Defined variables