qmail-clean.c

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#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "sig.h"
#include "now.h"
#include "str.h"
#include "direntry.h"
#include "getln.h"
#include "stralloc.h"
#include "buffer.h"
#include "byte.h"
#include "scan.h"
#include "fmt.h"
#include "exit.h"
#include "error.h"
#include "fmtqfn.h"
#include "auto_queue.h"
 
#define OSSIFIED 129600 /* see qmail-send.c */
 
stralloc line = {0};
 
static void cleanuppid()
{
  DIR *dir;
  direntry *d;
  struct stat st;
  datetime_sec time;
 
  time = now();
  dir = opendir("pid");
  if (!dir) return;
 
  while ((d = readdir(dir))) {
    if (str_equal(d->d_name,".")) continue;
    if (str_equal(d->d_name,"..")) continue;
    if (!stralloc_copys(&line,"pid/")) continue;
    if (!stralloc_cats(&line,d->d_name)) continue;
    if (!stralloc_0(&line)) continue;
    if (stat(line.s,&st) == -1) continue;
    if (time < st.st_atime + OSSIFIED) continue;
    unlink(line.s);
  }
  closedir(dir);
}
 
char fnbuf[FMTQFN];
 
static void respond(char *s) 
{ 
  if (buffer_putflush(buffer_1small,s,1) == -1) _exit(100); 
}
 
int main()
{
  int i;
  int match;
  int cleanuploop;
  unsigned long id;
 
  if (chdir(auto_queue) == -1) _exit(110);
  if (chdir("queue") == -1) _exit(110);
 
  sig_pipeignore();
 
  if (!stralloc_ready(&line,200)) _exit(111);
 
  cleanuploop = 0;
 
  for (;;) {
    if (cleanuploop) --cleanuploop; else { cleanuppid(); cleanuploop = 30; }
    if (getln(buffer_0small,&line,&match,'\0') == -1) break;
    if (!match) break;
    if (line.len < 7) { respond("x"); continue; }
    if (line.len > 100) { respond("x"); continue; }
    if (line.s[line.len - 1]) { respond("x"); continue; } /* impossible */
 
    for (i = line.len - 2; i > 4; --i) {
      if (line.s[i] == '/') break;
      if ((unsigned char) (line.s[i] - '0') > 9)
       { respond("x"); continue; }
    }
    if (line.s[i] == '/') 
      if (!scan_ulong(line.s + i + 1,&id)) { respond("x"); continue; }
    if (byte_equal(line.s,5,"foop/")) {
#define U(prefix,flag) fmtqfn(fnbuf,prefix,id,flag); \
      if (unlink(fnbuf) == -1) if (errno != ENOENT) { respond("!"); continue; }
      U("intd/",1)
      U("mess/",1)
      respond("+");
    } else if (byte_equal(line.s,4,"todo/")) {
      U("intd/",1)
      U("todo/",1)
      respond("+");
    }
    else
      respond("x");
  }
  _exit(0);
}