qmail-local.c

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#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "sig.h"
#include "env.h"
#include "byte.h"
#include "exit.h"
#include "open.h"
#include "wait.h"
#include "lock.h"
#include "seek.h"
#include "buffer.h"
#include "getln.h"
#include "getoptb.h"
#include "alloc.h"
#include "logmsg.h"
#include "stralloc.h"
#include "fmt.h"
#include "str.h"
#include "now.h"
#include "case.h"
#include "quote.h"
#include "qmail.h"
#include "readclose.h"
#include "myctime.h"
#include "gfrom.h"
#include "auto_break.h"
#include "auto_patrn.h"

 
#define WHO "qmail-local"
 
static void usage() { logmsg(WHO,100,USAGE,"qmail-local [ -nN ] user homedir local dash ext domain sender aliasempty"); }
 
static void temp_nomem() { logmsg(WHO,111,FATAL,"Out of memory. (#4.3.0)"); }
static void temp_rewind() { logmsg(WHO,111,FATAL,"Unable to rewind message. (#4.3.0)"); }
static void temp_childcrashed() { logmsg(WHO,111,FATAL,"Aack, child crashed. (#4.3.0)"); }
static void temp_fork() { logmsg(WHO,111,FATAL,B("Unable to fork: ",error_str(errno),". (#4.3.0)")); }
static void temp_read() { logmsg(WHO,111,ERROR,B("Unable to read message: ",error_str(errno),". (#4.3.0)")); }
static void temp_slowlock(int d) { logmsg(WHO,111,ERROR,"File has been locked for 30 seconds straight. (#4.3.0)"); }
static void temp_qmail(char *fn) { logmsg(WHO,111,FATAL,B("Unable to open: ",fn," ",error_str(errno),". (#4.3.0)")); }
 
int flagdoit;
int flag99;
 
char *user;
char *homedir; 
char *local;
char *dash;
char *ext;
char *host;
char *sender;
char *aliasempty;
 
stralloc safeext = {0};
stralloc ufline = {0};
stralloc rpline = {0};
stralloc envrecip = {0};
stralloc dtline = {0};
stralloc qme = {0};
stralloc ueo = {0};
stralloc cmds = {0};
stralloc messline = {0};
stralloc foo = {0};
stralloc hostname = {0};
 
char inbuf[BUFSIZE_LINE];
char outbuf[BUFSIZE_LINE];
 
/* child process */
 
char fntmptph[80 + FMT_ULONG * 2];
char fnnewtph[80 + FMT_ULONG * 2];
void tryunlinktmp() { unlink(fntmptph); }
void sigalrm(int d) { tryunlinktmp(); _exit(3); }
 
static void maildir_child(char *dir)
{
  unsigned long pid;
  struct timeval time;
  char host[64];
  char *s;
  int loop;
  struct stat st;
  int fd;
  buffer bi;
  buffer bo;
 
  sig_alarmcatch(sigalrm);
  if (chdir(dir) == -1) { if (errno != ENOENT) _exit(1); _exit(2); }
  pid = getpid();
  host[0] = 0;
  gethostname(host,sizeof(host));
 
  s = host;
  for (loop = 0; loop < str_len(host); ++loop) {
    if (host[loop] == '/') {
     if (!stralloc_cats(&hostname,"\\057")) temp_nomem();
     continue;
    }
    if (host[loop] == ':') {
      if (!stralloc_cats(&hostname,"\\072")) temp_nomem();
      continue;
    }
    if (!stralloc_append(&hostname,s+loop)) temp_nomem();
  }
 
  for (loop = 0 ;; ++loop) {
    gettimeofday(&time,0);
    s = fntmptph;
    s += fmt_str(s,"tmp/");
    s += fmt_ulong(s,time.tv_sec); *s++ = '.';
    *s++ = 'M'; s += fmt_ulong(s,time.tv_usec);
    *s++ = 'P'; s += fmt_ulong(s,pid); *s++ = '.';
    s += fmt_strn(s,hostname.s,hostname.len); *s++ = 0;
 
    if (stat(fntmptph,&st) == -1) if (errno == ENOENT) break;
    /* really should never get to this point */
    if (loop == 2) _exit(1);
    sleep(2);
  }
 
  alarm(86400);
  fd = open_excl(fntmptph);
  if (fd == -1) _exit(1);
 
  buffer_init(&bi,buffer_unixread,0,inbuf,sizeof(inbuf));
  buffer_init(&bo,buffer_unixwrite,fd,outbuf,sizeof(outbuf));
  if (buffer_put(&bo,rpline.s,rpline.len) == -1) goto FAIL;
  if (buffer_put(&bo,dtline.s,dtline.len) == -1) goto FAIL;
 
  switch (buffer_copy(&bo,&bi)) {
    case -2: tryunlinktmp(); _exit(4);
    case -3: goto FAIL;
  }
 
  if (buffer_flush(&bo) == -1) goto FAIL;
  if (fstat(fd,&st) == -1) goto FAIL;
  if (fsync(fd) == -1) goto FAIL;
  if (close(fd) == -1) goto FAIL; /* NFS dorks */
 
  s = fnnewtph;
  s += fmt_str(s,"new/");
  s += fmt_ulong(s,time.tv_sec); *s++ = '.';
 
  /* in hexadecimal */
  *s++ = 'I'; s += fmt_xlong(s,st.st_ino);
  *s++ = 'V'; s += fmt_xlong(s,st.st_dev);
 
  /* in decimal */
  *s++ = 'M'; s += fmt_ulong(s,time.tv_usec);
  *s++ = 'P'; s += fmt_ulong(s,pid); *s++ = '.';
 
  s += fmt_strn(s,hostname.s,hostname.len); *s++ = 0;
 
  if (link(fntmptph,fnnewtph) == -1) goto FAIL;
  if ((fd = open(fnnewtph,O_RDONLY)) < 0 || fsync(fd) < 0 || close(fd)) goto FAIL;
   /* DJB: if it was error_exist, almost certainly successful; i hate NFS -- FEH: Reiser patch */
  tryunlinktmp(); _exit(0);
 
  FAIL: tryunlinktmp(); _exit(1);
}
 
/* end child process */
 
static void maildir(char *fn)
{
  int child;
  int wstat;
 
  if (seek_begin(0) == -1) temp_rewind();
 
  switch (child = fork()) {
    case -1:
      temp_fork();
    case 0:
      maildir_child(fn);
      _exit(111);
  }
 
  wait_pid(&wstat,child);
  if (wait_crashed(wstat))
    temp_childcrashed();
 
  switch (wait_exitcode(wstat)) {
   case 0:  break;
   case 2:  logmsg(WHO,111,ERROR,"Unable to chdir to maildir. (#4.2.1)");
   case 3:  logmsg(WHO,111,ERROR,"Timeout on maildir delivery. (#4.3.0)");
   case 4:  logmsg(WHO,111,ERROR,"Unable to read message. (#4.3.0)");
   default: logmsg(WHO,111,ERROR,"Temporary error on maildir delivery. (#4.3.0)");
  }
}
 
static void mailfile(char *fn)
{
  int fd;
  buffer bi;
  buffer bo;
  int match;
  seek_pos pos;
  int flaglocked;
 
  if (seek_begin(0) == -1) temp_rewind();
 
  fd = open_append(fn);
  if (fd == -1)
    logmsg(WHO,111,ERROR,B("Unable to open:",fn," ",error_str(errno),". (#4.2.1)"));
 
  sig_alarmcatch(temp_slowlock);
  alarm(30);
  flaglocked = (lock_ex(fd) != -1);
  alarm(0);
  sig_alarmdefault();
 
  seek_end(fd);
  pos = seek_cur(fd);
 
  buffer_init(&bi,buffer_unixread,0,inbuf,sizeof(inbuf));
  buffer_init(&bo,buffer_unixwrite,fd,outbuf,sizeof(outbuf));
  if (buffer_put(&bo,ufline.s,ufline.len)) goto WRITERRS;
  if (buffer_put(&bo,rpline.s,rpline.len)) goto WRITERRS;
  if (buffer_put(&bo,dtline.s,dtline.len)) goto WRITERRS;
 
  for (;;) {
    if (getln(&bi,&messline,&match,'\n') != 0) {
      logmsg(WHO,0,WARN,B("Unable to read message: ",error_str(errno),". (#4.3.0)"));
      if (flaglocked) seek_trunc(fd,pos); 
      close(fd);
      _exit(111);
    }
    if (!match && !messline.len) break;
    if (gfrom(messline.s,messline.len))
      if (buffer_puts(&bo,">")) goto WRITERRS;
    if (buffer_put(&bo,messline.s,messline.len)) goto WRITERRS;
    if (!match) {
      if (buffer_puts(&bo,"\n")) goto WRITERRS;
      break;
    }
  }
 
  if (buffer_puts(&bo,"\n")) goto WRITERRS;
  if (buffer_flush(&bo)) goto WRITERRS;
  if (fsync(fd) == -1) goto WRITERRS;
  close(fd);
  return;
 
  WRITERRS:
  logmsg(WHO,0,WARN,B("Unable to write ",fn,": ",error_str(errno),". (#4.3.0)"));
  if (flaglocked) seek_trunc(fd,pos);
  close(fd);
  _exit(111);
}
 
static void mailprogram(char *prog)
{
  int child;
  char *(args[4]);
  int wstat;
 
  if (seek_begin(0) == -1) temp_rewind();
 
  switch (child = fork()) {
    case -1:
      temp_fork();
    case 0:
      args[0] = "/bin/sh"; 
      args[1] = "-c"; 
      args[2] = prog; 
      args[3] = 0;
      sig_pipedefault();
      execv(*args,args);
      logmsg(WHO,0,ERROR,B("Unable to run /bin/sh: ",error_str(errno),". (#4.3.0)"));
  }
 
  wait_pid(&wstat,child);
  if (wait_crashed(wstat))
    temp_childcrashed();
 
  switch (wait_exitcode(wstat)) {
    case 100:
    case 64: case 65: case 70: case 76: case 77: case 78: case 112: _exit(100);
    case 0: break;
    case 99: flag99 = 1; break;
    default: _exit(111);
   }
}
 
unsigned long mailforward_qp = 0;
 
static void mailforward(char **recips)
{
  struct qmail qqt;
  char *qqx;
  buffer bi;
  int match;
 
  if (seek_begin(0) == -1) temp_rewind();
  buffer_init(&bi,buffer_unixread,0,inbuf,sizeof(inbuf));
 
  if (qmail_open(&qqt) == -1) temp_fork();
  mailforward_qp = qmail_qp(&qqt);
  qmail_put(&qqt,dtline.s,dtline.len);
 
  do {
    if (getln(&bi,&messline,&match,'\n') != 0) { qmail_fail(&qqt); break; }
    qmail_put(&qqt,messline.s,messline.len);
  } while (match);
 
  qmail_from(&qqt,ueo.s);
  while (*recips) qmail_to(&qqt,*recips++);
  qqx = qmail_close(&qqt);
  if (!*qqx) return;
  logmsg(WHO,*qqx == 'D' ? 100 : 111,ERROR,B("Unable to forward message: ",qqx + 1,"."));
}
 
static void bouncexf()
{
  int match;
  buffer bi;
 
  if (seek_begin(0) == -1) temp_rewind();
  buffer_init(&bi,buffer_unixread,0,inbuf,sizeof(inbuf));
 
  for (;;) {
    if (getln(&bi,&messline,&match,'\n') != 0) temp_read();
    if (!match) break;
    if (messline.len <= 1)
      break;
    if (messline.len == dtline.len)
      if (!str_diffn(messline.s,dtline.s,dtline.len))
        logmsg(WHO,100,ERROR,"This message is looping: it already has my Delivered-To line. (#5.4.6)");
  }
}
 
static void checkhome()
{
  struct stat st;
 
  if (stat(".",&st) == -1)
    logmsg(WHO,111,ERROR,B("Unable to stat home directory: ",error_str(errno),". (#4.3.0)"));
  if (st.st_mode & auto_patrn)
    logmsg(WHO,111,ERROR,"Uh-oh: home directory is writable. (#4.7.0)");
  if (st.st_mode & 01000)
    if (flagdoit)
      logmsg(WHO,111,ERROR,"Home directory is sticky: user is editing his .qmail file. (#4.2.1)");
    else
      logmsg(WHO,0,WARN,"Warning: home directory is sticky.");
}
 
static int qmeox(char *dashowner)
{
  struct stat st;
 
  if (!stralloc_copys(&qme,".qmail")) temp_nomem();
  if (!stralloc_cats(&qme,dash)) temp_nomem();
  if (!stralloc_cat(&qme,&safeext)) temp_nomem();
  if (!stralloc_cats(&qme,dashowner)) temp_nomem();
  if (!stralloc_0(&qme)) temp_nomem();
 
  if (stat(qme.s,&st) == -1) {
    if (errno != ENOENT) temp_qmail(qme.s);
    return -1;
  }
 return 0;
}
 
static int qmeexists(int *fd,int *cutable)
{
  struct stat st;
 
  if (!stralloc_0(&qme)) temp_nomem();
 
  *fd = open_read(qme.s);
  if (*fd == -1) {
    if (errno != ENOENT) temp_qmail(qme.s);
    if (errno == EPERM) temp_qmail(qme.s);
    if (errno == EACCES) temp_qmail(qme.s);
    return 0;
  }
 
  if (fstat(*fd,&st) == -1) temp_qmail(qme.s);
  if ((st.st_mode & S_IFMT) == S_IFREG) {
    if (st.st_mode & auto_patrn)
      logmsg(WHO,111,ERROR,"Uh-oh: .qmail file is writable. (#4.7.0)");
    *cutable = !!(st.st_mode & 0100);
    return 1;
  }
  close(*fd);
  return 0;
}
 
/* "" "": "" */
/* "-/" "": "-/" "-/default" */
/* "-/" "a": "-/a" "-/default" */
/* "-/" "a-": "-/a-" "-/a-default" "-/default" */
/* "-/" "a-b": "-/a-b" "-/a-default" "-/default" */
/* "-/" "a-b-": "-/a-b-" "-/a-b-default" "-/a-default" "-/default" */
/* "-/" "a-b-c": "-/a-b-c" "-/a-b-default" "-/a-default" "-/default" */
 
static void qmesearch(int *fd,int *cutable)
{
  int i;
 
  if (!stralloc_copys(&qme,".qmail")) temp_nomem();
  if (!stralloc_cats(&qme,dash)) temp_nomem();
  if (!stralloc_cat(&qme,&safeext)) temp_nomem();
  if (qmeexists(fd,cutable)) {
    if (safeext.len >= 7) {
      i = safeext.len - 7;
      if (!byte_diff("default",7,safeext.s + i))
        if (i <= str_len(ext)) /* paranoia */
          if (!env_put("DEFAULT",ext + i)) temp_nomem();
    }
    return;
  }
 
  for (i = safeext.len; i >= 0 ;--i)
    if (!i || (safeext.s[i - 1] == '-')) {
      if (!stralloc_copys(&qme,".qmail")) temp_nomem();
      if (!stralloc_cats(&qme,dash)) temp_nomem();
      if (!stralloc_catb(&qme,safeext.s,i)) temp_nomem();
      if (!stralloc_cats(&qme,"default")) temp_nomem();
      if (qmeexists(fd,cutable)) {
        if (i <= str_len(ext)) /* paranoia */
          if (!env_put("DEFAULT",ext + i)) temp_nomem();
        return;
      }
    }
 
  *fd = -1;
}
 
unsigned long count_file = 0;
unsigned long count_forward = 0;
unsigned long count_program = 0;
char count_buf[FMT_ULONG];
char buflog[BUFSIZE_LOG];
buffer bl = BUFFER_INIT(buffer_unixwrite,1,buflog,sizeof(buflog));
 
static void count_print()
{
  buffer_puts(&bl,"did ");
  buffer_put(&bl,count_buf,fmt_ulong(count_buf,count_file));
  buffer_puts(&bl,"+");
  buffer_put(&bl,count_buf,fmt_ulong(count_buf,count_forward));
  buffer_puts(&bl,"+");
  buffer_put(&bl,count_buf,fmt_ulong(count_buf,count_program));
  buffer_puts(&bl,"\n");
 
  if (mailforward_qp) {
    buffer_puts(&bl,"qp ");
    buffer_put(&bl,count_buf,fmt_ulong(count_buf,mailforward_qp));
    buffer_puts(&bl,"\n");
  }
  buffer_flush(&bl);
}
 
static void sayit(char *type,char *cmd,int len)
{
  buffer_puts(&bl,type);
  buffer_put(&bl,cmd,len);
  buffer_putsflush(&bl,"\n");
}
 
int main(int argc,char * const *argv)
{
  int opt;
  int i, j, k;
  int fd;
  int numforward;
  char **recips;
  datetime_sec starttime;
  int flagforwardonly;
  char *x;
 
  umask(077);
  sig_pipeignore();
 
  if (!env_init()) temp_nomem();
 
  flagdoit = 1;
  while ((opt = getoptb(argc,(char **)argv,"nN")) != opteof)
    switch (opt) {
     case 'n': flagdoit = 0; break;
     case 'N': flagdoit = 1; break;
     default:  usage();
    }
  argc -= optind;
  argv += optind;
 
  if (!(user = *argv++)) usage();
  if (!(homedir = *argv++)) usage();
  if (!(local = *argv++)) usage();
  if (!(dash = *argv++)) usage();
  if (!(ext = *argv++)) usage();
  if (!(host = *argv++)) usage();
  if (!(sender = *argv++)) usage();
  if (!(aliasempty = *argv++)) usage();
  if (*argv) usage();
 
  if (homedir[0] != '/') usage();
  if (chdir(homedir) == -1)
    logmsg(WHO,111,ERROR,B("Unable to switch to: ",homedir," ",error_str(errno),". (#4.3.0)"));
  checkhome();
 
  if (!env_put("HOST",host)) temp_nomem();
  if (!env_put("HOME",homedir)) temp_nomem();
  if (!env_put("USER",user)) temp_nomem();
  if (!env_put("LOCAL",local)) temp_nomem();
 
#ifdef HIDEVIRTUALUSER
  if (str_len(ext) > 1) {
    i = str_chr(local,*auto_break);
    if (!stralloc_copys(&envrecip,local + i + 1)) temp_nomem();
  } else  
#endif
    if (!stralloc_copys(&envrecip,local)) temp_nomem();
  if (!stralloc_cats(&envrecip,"@")) temp_nomem();
  if (!stralloc_cats(&envrecip,host)) temp_nomem();
 
  if (!stralloc_copy(&foo,&envrecip)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("RECIPIENT",foo.s)) temp_nomem();
 
  if (!stralloc_copys(&dtline,"Delivered-To: ")) temp_nomem();
  if (!stralloc_cat(&dtline,&envrecip)) temp_nomem();
        
  for (i = 0; i < dtline.len; ++i) 
          if (dtline.s[i] == '\n') dtline.s[i] = '_';
  if (!stralloc_cats(&dtline,"\n")) temp_nomem();
 
  if (!stralloc_copy(&foo,&dtline)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("DTLINE",foo.s)) temp_nomem();
 
  if (flagdoit) bouncexf();
 
  if (!env_put("SENDER",sender)) temp_nomem();
 
  if (!quote2(&foo,sender)) temp_nomem();
  if (!stralloc_copys(&rpline,"Return-Path: <")) temp_nomem();
  if (!stralloc_cat(&rpline,&foo)) temp_nomem();
  for (i = 0;i < rpline.len;++i) if (rpline.s[i] == '\n') rpline.s[i] = '_';
  if (!stralloc_cats(&rpline,">\n")) temp_nomem();
 
  if (!stralloc_copy(&foo,&rpline)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("RPLINE",foo.s)) temp_nomem();
 
  if (!stralloc_copys(&ufline,"From ")) temp_nomem();
 
  if (*sender) {
    int len; int i; char ch;
 
    len = str_len(sender);
    if (!stralloc_readyplus(&ufline,len)) temp_nomem();
 
    for (i = 0;i < len;++i) {
      ch = sender[i];
      if ((ch == ' ') || (ch == '\t') || (ch == '\n')) ch = '-';
      ufline.s[ufline.len + i] = ch;
    }
    ufline.len += len;
  } else
    if (!stralloc_cats(&ufline,"MAILER-DAEMON")) temp_nomem();
 
  if (!stralloc_cats(&ufline," ")) temp_nomem();
  starttime = now();
  if (!stralloc_cats(&ufline,myctime(starttime))) temp_nomem();
 
  if (!stralloc_copy(&foo,&ufline)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("UFLINE",foo.s)) temp_nomem();
 
  x = ext;
  if (!env_put("EXT",x)) temp_nomem();
  x += str_chr(x,'-'); if (*x) ++x;
  if (!env_put("EXT2",x)) temp_nomem();
  x += str_chr(x,'-'); if (*x) ++x;
  if (!env_put("EXT3",x)) temp_nomem();
  x += str_chr(x,'-'); if (*x) ++x;
  if (!env_put("EXT4",x)) temp_nomem();
 
  if (!stralloc_copys(&safeext,ext)) temp_nomem();
  case_lowerb(safeext.s,safeext.len);
 
  for (i = 0; i < safeext.len; ++i)
    if (safeext.s[i] == '.')
      safeext.s[i] = ':';
 
  i = str_len(host);
  i = byte_rchr(host,i,'.');
  if (!stralloc_copyb(&foo,host,i)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("HOST2",foo.s)) temp_nomem();
  i = byte_rchr(host,i,'.');
  if (!stralloc_copyb(&foo,host,i)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("HOST3",foo.s)) temp_nomem();
  i = byte_rchr(host,i,'.');
  if (!stralloc_copyb(&foo,host,i)) temp_nomem();
  if (!stralloc_0(&foo)) temp_nomem();
  if (!env_put("HOST4",foo.s)) temp_nomem();
 
  flagforwardonly = 0;
  qmesearch(&fd,&flagforwardonly);
 
  if (fd == -1)
    if (*dash)
      logmsg(WHO,100,ERROR,"Sorry, no mailbox here by that name. (#5.1.1)");
 
  if (!stralloc_copys(&ueo,sender)) temp_nomem();
  if (str_diff(sender,""))
    if (str_diff(sender,"#@[]"))
      if (qmeox("-owner") == 0) {
        if (qmeox("-owner-default") == 0) {
          if (!stralloc_copys(&ueo,local)) temp_nomem();
          if (!stralloc_cats(&ueo,"-owner-@")) temp_nomem();
          if (!stralloc_cats(&ueo,host)) temp_nomem();
          if (!stralloc_cats(&ueo,"-@[]")) temp_nomem();
        } else {
          if (!stralloc_copys(&ueo,local)) temp_nomem();
          if (!stralloc_cats(&ueo,"-owner@")) temp_nomem();
          if (!stralloc_cats(&ueo,host)) temp_nomem();
        }
      }
  if (!stralloc_0(&ueo)) temp_nomem();
  if (!env_put("NEWSENDER",ueo.s)) temp_nomem();
 
  if (!stralloc_ready(&cmds,0)) temp_nomem();
  cmds.len = 0;
 
  if (fd != -1)
    if (readclose_append(fd,&cmds,256) == -1) temp_nomem();
 
  if (!cmds.len) {
    if (!stralloc_copys(&cmds,aliasempty)) temp_nomem();
    flagforwardonly = 0;
  }
  if (!cmds.len || (cmds.s[cmds.len - 1] != '\n'))
    if (!stralloc_cats(&cmds,"\n")) temp_nomem();
 
  numforward = 0;
  i = 0;
 
  for (j = 0; j < cmds.len; ++j)
    if (cmds.s[j] == '\n') {
      switch (cmds.s[i]) { 
        case '#': case '.': case '/': case '|': break;
        default: ++numforward; 
      }
      i = j + 1;
    }
 
  recips = (char **) alloc((numforward + 1) * sizeof(char *));
  if (!recips) temp_nomem();
  numforward = 0;
 
  flag99 = 0;
 
  i = 0;
  for (j = 0; j < cmds.len; ++j)
    if (cmds.s[j] == '\n') {
      cmds.s[j] = 0;
      k = j;
     /* Patch contributed by Erik Sjolund <erik.sjolund@gmail.com>. */
      while ((k > i) && ((cmds.s[k - 1] == ' ') || (cmds.s[k - 1] == '\t'))) 
        cmds.s[--k] = 0;
      switch (cmds.s[i]) {
        case 0: /* k == i */
          if (i) break;
          logmsg(WHO,111,ERROR,"Uh-oh: first line of .qmail file is blank. (#4.2.1)");
        case '#':
           break;
        case '.':
        case '/':
           ++count_file;
           if (flagforwardonly) logmsg(WHO,111,ERROR,"Uh-oh: .qmail has file delivery but has x bit set. (#4.7.0)");
           if (cmds.s[k - 1] == '/')
              if (flagdoit) maildir(cmds.s + i);
              else sayit("maildir ",cmds.s + i,k - i);
           else
             if (flagdoit) mailfile(cmds.s + i);
             else sayit("mbox ",cmds.s + i,k - i);
           break;
         case '|':
            ++count_program;
           if (flagforwardonly) logmsg(WHO,111,ERROR,"Uh-oh: .qmail has prog delivery but has x bit set. (#4.7.0)");
           if (flagdoit) mailprogram(cmds.s + i + 1);
           else sayit("program ",cmds.s + i + 1,k - i - 1);
           break;
         case '+':
           if (str_equal(cmds.s + i + 1,"list"))
           flagforwardonly = 1;
           break;
         case '&':
           ++i;
         default:
           ++count_forward;
           if (flagdoit) recips[numforward++] = cmds.s + i;
           else sayit("forward ",cmds.s + i,k - i);
           break;
      }
      i = j + 1;
      if (flag99) break;
    }
 
  if (numforward) if (flagdoit) {
    recips[numforward] = 0;
    mailforward(recips);
  }
 
  count_print();
  _exit(0);
}