#include "substdio.h"#include "readwrite.h"#include "wait.h"#include "exit.h"#include "fork.h"#include "fd.h"#include "qmail.h"#include "auto_qmail.h"static char *binqqargs[2] = { "bin/qmail-queue", 0 } ;int qmail_open(qq)struct qmail *qq;{  int pim[2];  int pie[2];  if (pipe(pim) == -1) return -1;  if (pipe(pie) == -1) { close(pim[0]); close(pim[1]); return -1; }   switch(qq->pid = vfork()) {    case -1:      close(pim[0]); close(pim[1]);      close(pie[0]); close(pie[1]);      return -1;    case 0:      close(pim[1]);      close(pie[1]);      if (fd_move(0,pim[0]) == -1) _exit(120);      if (fd_move(1,pie[0]) == -1) _exit(120);      if (chdir(auto_qmail) == -1) _exit(61);      execv(*binqqargs,binqqargs);      _exit(120);  }  qq->fdm = pim[1]; close(pim[0]);  qq->fde = pie[1]; close(pie[0]);  substdio_fdbuf(&qq->ss,write,qq->fdm,qq->buf,sizeof(qq->buf));  qq->flagerr = 0;  return 0;}unsigned long qmail_qp(qq) struct qmail *qq;{  return qq->pid;}void qmail_fail(qq) struct qmail *qq;{  qq->flagerr = 1;}void qmail_put(qq,s,len) struct qmail *qq; char *s; int len;{  if (!qq->flagerr) if (substdio_put(&qq->ss,s,len) == -1) qq->flagerr = 1;}void qmail_puts(qq,s) struct qmail *qq; char *s;{  if (!qq->flagerr) if (substdio_puts(&qq->ss,s) == -1) qq->flagerr = 1;}void qmail_from(qq,s) struct qmail *qq; char *s;{  if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;  close(qq->fdm);  substdio_fdbuf(&qq->ss,write,qq->fde,qq->buf,sizeof(qq->buf));  qmail_put(qq,"F",1);  qmail_puts(qq,s);  qmail_put(qq,"",1);}void qmail_to(qq,s) struct qmail *qq; char *s;{  qmail_put(qq,"T",1);  qmail_puts(qq,s);  qmail_put(qq,"",1);}char *qmail_close(qq)struct qmail *qq;{  int wstat;  int exitcode;  qmail_put(qq,"",1);  if (!qq->flagerr) if (substdio_flush(&qq->ss) == -1) qq->flagerr = 1;  close(qq->fde);  if (wait_pid(&wstat,qq->pid) != qq->pid)    return "Zqq waitpid surprise (#4.3.0)";  if (wait_crashed(wstat))    return "Zqq crashed (#4.3.0)";  exitcode = wait_exitcode(wstat);  switch(exitcode) {    case 115: /* compatibility */    case 11: return "Denvelope address too long for qq (#5.1.3)";    case 31: return "Dmail server permanently rejected message (#5.3.0)";    case 51: return "Zqq out of memory (#4.3.0)";    case 52: return "Zqq timeout (#4.3.0)";    case 53: return "Zqq write error or disk full (#4.3.0)";    case 0: if (!qq->flagerr) return ""; /* fall through */    case 54: return "Zqq read error (#4.3.0)";    case 55: return "Zqq unable to read configuration (#4.3.0)";    case 56: return "Zqq trouble making network connection (#4.3.0)";    case 61: return "Zqq trouble in home directory (#4.3.0)";    case 63:    case 64:    case 65:    case 66:    case 62: return "Zqq trouble creating files in queue (#4.3.0)";    case 71: return "Zmail server temporarily rejected message (#4.3.0)";    case 72: return "Zconnection to mail server timed out (#4.4.1)";    case 73: return "Zconnection to mail server rejected (#4.4.1)";    case 74: return "Zcommunication with mail server failed (#4.4.2)";    case 91: /* fall through */    case 81: return "Zqq internal bug (#4.3.0)";    case 120: return "Zunable to exec qq (#4.3.0)";    default:      if ((exitcode >= 11) && (exitcode <= 40))	return "Dqq permanent problem (#5.3.0)";      return "Zqq temporary problem (#4.3.0)";  }}