Fresh Fish 2/FFMCD02.bin/new/comm/net/amitcp/amitcp-2.2/src/appl/fingerd/fingerd.c

C/C++ Source or Header | 1993-12-21 | 4.8 KB | 232 lines

RCS_ID_C= "$Id: fingerd.c,v 1.4 1993/10/18 15:45:30 ppessi Exp $";
/*
 * fingerd.c --- an example of TCP daemon for AmiTCP/IP
 *
 * This command sends either a AmiTCP/IP banner or the specified file
 * into the TCP socket server_socket
 *
 * Author: ppessi <[e-mail]>
 *
 * Copyright © 1993 AmiTCP/IP Group, <[e-mail]>
 *                  Helsinki University of Technology, Finland.
 *
 * Created      : Mon May 24 23:44:43 1993 ppessi
 * Last modified: Mon Oct 18 17:34:41 1993 ppessi
 *
 * $Log: fingerd.c,v $
 * Revision 1.4  1993/10/18  15:45:30  ppessi
 * Added real version tags.
 *
 * Revision 1.3  1993/10/15  01:24:00  ppessi
 * A new version supporting real fingering. Uses Apipe:.
 *
 * Revision 1.2  1993/08/10  20:46:23  jraja
 * Added version string.
 *
 * Revision 1.1  1993/06/04  11:49:53  jraja
 * Initial revision
 *
 */

#include "fingerd_rev.h"
const char version[] = VERSTAG;

char copyright[] =
  "Copyright © 1993 AmiTCP/IP Group, <[e-mail]>\n"
  "Helsinki University of Technology, Finland.\n";

#ifdef AMIGA
#if __SASC
#include <proto/socket.h>
#include <proto/dos.h>
#include <clib/exec_protos.h>
#include <pragmas/exec_sysbase_pragmas.h>
#elif __GNUC__
#include <inline/socket.h>
#include <inline/exec.h>
#else
#include <clib/socket_protos.h>
#endif
#endif /* AMIGA */

#include <errno.h>
#include <netdb.h>

#include <sys/param.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>

#include <signal.h>

#include <dos/dos.h>
#include <exec/execbase.h>
#include <dos/var.h>

#include <stdlib.h>
#include <inetdlib.h>

#include "pathnames.h"

#define isspace(x) (x == ' ')

extern struct ExecBase *SysBase;

BPTR Stdin = NULL;
BPTR Stdout = NULL;
BPTR Stderr = NULL;

void
_STIdosStdio(void)
{
  struct Process *p = (struct Process *)SysBase->ThisTask;

  Stdin = p->pr_CIS;
  Stdout = p->pr_COS;
  Stderr = p->pr_CES ? p->pr_CES : Stdout;
}

#define BANNER \
"\r\n             AmiTCP/IP 2.1 Release System.\r\n\r\n"

int
main(int argc, char **argv)
{
  long len;
  int s = server_socket;
  BPTR pfh;

# define CMDHEAD "apipe:" _PATH_FINGER ""
# define CMDLEN (sizeof(CMDHEAD)-1)
# define LINELEN (1024)
# define CMDLINELEN (1024+CMDLEN)

  char line[LINELEN], cmdline[CMDLINELEN] = CMDHEAD;
  char *fname = cmdline;

#ifdef LOGGING
#include <netinet/in.h>
  struct sockaddr_in sin;
  int sval;
#endif

  if (s == -1) {
#ifdef STANDALONE
    struct sockaddr_in sin;

    s = serveraccept("finger", &sin);
    if (s != -1) {
      FPrintf(Stderr, "Accepted a connection from %s, port %ld\n",
          inet_ntoa(sin.sin_addr), sin.sin_port);
    } else
#endif
      return 1;
  }

#ifdef LOGGING            /* unused for now */
  sval = sizeof(sin);
  if (getpeername(0, &sin, &sval) < 0)
    fatal("getpeername");
#endif

  {
    enum { WSPACE, TOKEN, QUOTED } state = WSPACE;
    char c;
    int received, peek, len = 0;

    do {
      received = recv(s, line + len, 1, 0);
      if (received < 0) {
    PrintNetFault(Errno(), "recv");
    return 1;
      }
    } while (received && line[len] != '\n' && len++ < LINELEN - 2);

    if (len == 1 && argc > 1)
      fname = argv[1];

    if (line[len - 1] == '\r')
      len--;
    line[len] = '\0';

    /*
     * Parse command line:
     * Quote arguments,
     * convert /w to -l
     */
    peek = 0; received = len = CMDLEN;
    while ((c = line[peek++]) && len < CMDLINELEN - 4) {
      switch(state) {
      case WSPACE:
    if (c == '/'
        && (line[peek] == 'W' || line[peek] == 'w')
        && (line[peek + 1] == '\0' || isspace(line[peek + 1]))) {
      cmdline[len++] = ' ';
      cmdline[len++] = '-';
      cmdline[len++] = 'l';
      peek += 1;
      received = len;
    } else if (c == '"') {
      cmdline[len++] = '"';
      state = QUOTED;
    } else if (!isspace(c)) {
      cmdline[len++] = ' ';
      cmdline[len++] = '"';
      cmdline[len++] = c;
      state = TOKEN;
    }
    break;
      case TOKEN:
    if (c == '"') {
      state = QUOTED;
    } else if (isspace(c)) {
      cmdline[len++] = '"';
      state = WSPACE;
      received = len;
    } else {
      cmdline[len++] = c;
    }
    break;
      case QUOTED:
    if (c == '"') {
      state = TOKEN;
    } else {
      cmdline[len++] = c;
    }
    break;
      }
    }
    if (c || state == QUOTED) {
      /* remove last argument */
      len = received;
    } else if (state == TOKEN) {
      cmdline[len++] = '"';
    }
    cmdline[len] = '\0';    /* put eos */
  }

  pfh = Open(fname, MODE_OLDFILE);

  /* Try to open banner if there is no APipe or Finger */
  if (pfh ||
      argc >= 2 && (pfh = Open(argv[1], MODE_OLDFILE))) {
    while (FGets(pfh, line, sizeof(line))) {
      len = strlen(line);
      /* Change eol's to the network standard */
      if (line[len - 1] == '\n') {
    line[len - 1] = '\r';
    line[len++] = '\n';
      }
      if (send(s, line, len, 0) < 0) break;
    }
    Close(pfh);
  } else {
    if (send(s, BANNER, strlen(BANNER), 0) < 0) {
      PrintNetFault(Errno(), "send");
      return 1;
    }
  }

  return 0;
}