C++ scan_ulong函数代码示例

void didentd_init()
{
  char *x;
  unsigned long id;

  x = env_get("ROOT");
  if (!x)
     strerr_die2x(111,FATAL,"$ROOT not set");
  if (chdir(x) == -1)
    strerr_die4sys(111,FATAL,"unable to chdir to ",x,": ");

  x = env_get("GID");
  if (!x)
    strerr_die2x(111,FATAL,"$GID not set");
  scan_ulong(x,&id);
  if (prot_gid((int) id) == -1)
    strerr_die2sys(111,FATAL,"unable to setgid: ");

  x = env_get("UID");
  if (!x)
    strerr_die2x(111,FATAL,"$UID not set");
  scan_ulong(x,&id);
  if (prot_uid((int) id) == -1)
    strerr_die2sys(111,FATAL,"unable to setuid: ");
}

void didentd_init()
{
  /* chroot() to /proc/net/ and switch to $UID:$GID */
  char *x;
  unsigned long id;

  if (chdir("/proc/net/") == -1)
    strerr_die2sys(111,FATAL,"unable to chdir to '/proc/net/': ");
  if (chroot(".") == -1)
    strerr_die2sys(111,FATAL,"unable to chdir to '/proc/net/': ");

  x = env_get("GID");
  if (!x)
    strerr_die2x(111,FATAL,"$GID not set");
  scan_ulong(x,&id);
  if (prot_gid((int) id) == -1)
    strerr_die2sys(111,FATAL,"unable to setgid: ");

  x = env_get("UID");
  if (!x)
    strerr_die2x(111,FATAL,"$UID not set");
  scan_ulong(x,&id);
  if (prot_uid((int) id) == -1)
    strerr_die2sys(111,FATAL,"unable to setuid: ");
}

static int parsetime(const char*c,struct tm* x) {
  unsigned long tmp;
  c+=scan_ulong(c,&tmp); x->tm_hour=tmp;
  if (*c!=':') return -1; ++c;
  c+=scan_ulong(c,&tmp); x->tm_min=tmp;
  if (*c!=':') return -1; ++c;
  c+=scan_ulong(c,&tmp); x->tm_sec=tmp;
  if (*c!=' ') return -1;
  return 0;
}

static int
pls_reader(playlist* pl) {
  int ret;
    static playlist_entry entry;
  buffer* inbuf = pl->ptr;
  stralloc line;
  stralloc_init(&line);
  if(( ret = buffer_getline_sa(inbuf, &line))) {
    size_t index2, index;
    index2 = index = 0;
    while(line.len > 1 &&
          (line.s[line.len - 1] == '\r' || line.s[line.len - 1] == '\n'))
      line.len--;
    stralloc_0(&line);
    if(!str_diffn(&line.s[index], "Number", 6)) {
    } else if(line.s[index] == '[') {
    } else if((index2 = str_chr(&line.s[index], '=')) > 0) {
      unsigned long trackno = 0;
      index = index2;
      index2++;
      do { index--; } while(isdigit(line.s[index]) && index > 0);
      scan_ulong(&line.s[index], &trackno);
      if(!str_diffn(&line.s[index], "File", 4)) {
        stralloc_copys(&entry.path, &line.s[index2]);
        stralloc_0(&entry.path);
      } else if(!str_diffn(&line.s[index], "Title", 5)) {
        stralloc_copys(&entry.title, &line.s[index2]);
        stralloc_0(&entry.title);
      } else if(!str_diffn(&line.s[index], "Length", 6)) {
        unsigned long len;
        scan_ulong(&line.s[index2], &len);
        entry.length = len;
      }
      /*
      uint32 index = 8;
      index += scan_ulong(&line.s[index], &len);
      entry.length = len;
      index++;
      stralloc_copys(&entry.title, &line.s[index]);
      stralloc_0(&entry.title);
      */
    } else {
      /*
      stralloc_copy(&entry.path, &line);
      stralloc_0(&entry.path);
      if(pl->callback) {
      pl->callback(pl, &entry.title, &entry.path, entry.length);
      }*/
    }
  }
  return ret;
}

const char *get_from(const char *adr, /* target address */
		     const char *act) /* action */
/* If we captured a from line, it will be from the subscriber, except   */
/* when -S is used when it's usually from the subscriber, but of course */
/* could be from anyone. The matching to stored data is required only   */
/* to support moderated lists, and in cases where a new -sc is issued   */
/* because an old one was invalid. In this case, we read through the    */
/* from file trying to match up a timestamp with that starting in       */
/* *(act+3). If the time stamp matches, we compare the target address   */
/* itself. act + 3 must be a legal part of the string returns pointer to*/
/* fromline, NULL if not found. Since the execution time from when to   */
/* storage may differ, we can't assume that the timestamps are in order.*/
{
  int fd;
  const char *fl;
  unsigned int pos;
  unsigned long thistime;
  unsigned long linetime;

  if (!flagstorefrom) return 0;
  if (fromline.len) {	/* easy! We got it in this message */
    stralloc_0(&fromline);
    return fromline.s;
  }			/* need to recover it from DIR/from */
  fl = 0;
  (void) scan_ulong(act+3,&thistime);
  if ((fd = open_read("from")) == -1) {
    if (errno == error_noent)
      return 0;
    else
      strerr_die2sys(111,FATAL,MSG1(ERR_READ,"from"));
  }
  substdio_fdbuf(&sstext,read,fd,textbuf,(int) sizeof(textbuf));
  for (;;) {
    if (getln(&sstext,&fromline,&match,'\n') == -1)
      strerr_die2sys(111,FATAL,MSG1(ERR_READ,"from"));
    if (!match) break;
    fromline.s[fromline.len - 1] = (char) 0;
	/* now:time addr\0fromline\0 read all. They can be out of order! */
    pos = scan_ulong(fromline.s,&linetime);
    if (linetime != thistime) continue;
    if (!str_diff(fromline.s + pos + 1,adr)) {
      pos = str_len(fromline.s);
      if (pos < fromline.len) {
	fl = fromline.s + pos + 1;
	break;
      }
    }
  }
  close(fd);
  return fl;
}

void main(int argc,char **argv)
{
  int fdlock;
  unsigned long delay;
  (void) umask(022);
  sig_pipeignore();
  when = now();

  getconfopt(argc,argv,options,1,0);
  if (flagreturn < 0)
    /* default to returning timed-out messages */
    flagreturn = !getconf_isset("noreturnposts");

  getconf_line(&modtime,"modtime",0);
  if (!stralloc_0(&modtime)) die_nomem();
  scan_ulong(modtime.s,&delay);
  if (!delay) delay = DELAY_DEFAULT;
  else if (delay < DELAY_MIN) delay = DELAY_MIN;
  else if (delay > DELAY_MAX) delay = DELAY_MAX;
  older = (unsigned long) when - 3600L * delay;	/* delay is in hours */

  fdlock = lockfile("mod/lock");

  dodir("mod/pending/",flagreturn);
  dodir("mod/accepted/",0);
  dodir("mod/rejected/",0);
  dodir("mod/unconfirmed/",0);
  _exit(0);
}

size_t
scan_uint(const char* src, unsigned int* dest) {
  if(sizeof(unsigned int) == sizeof(unsigned long)) {
    /* a good optimizing compiler should remove the else clause when not
     * needed */
    return scan_ulong(src, (unsigned long*)dest);
  } else if(sizeof(unsigned int) < sizeof(unsigned long)) {
    const char* cur;
    unsigned int l;
    for(cur = src, l = 0; *cur >= '0' && *cur <= '9'; ++cur) {
      unsigned long tmp = l * 10ul + *cur - '0';
      if((unsigned int)tmp != tmp)
        break;
      l = tmp;
    }
    if(cur > src)
      *dest = l;
    return (size_t)(cur - src);
#ifdef __GNUC__
  } else {
    /* the C standard says that sizeof(short) <= sizeof(unsigned int) <=
     * sizeof(unsigned long); this can never happen. Provoke a compile
     * error if it does */
    char compileerror[sizeof(unsigned long) - sizeof(unsigned int)];
    (void)compileerror;
#endif
  }
}

void getlarg(long *l) {
  unsigned long ul;

  if (str_equal(optarg, "=")) { *l =-1; return; }
  if (optarg[scan_ulong(optarg, &ul)]) usage();
  *l =ul;
}

unsigned int ip4_scan(const char *s,unsigned char ip[4])
{
  unsigned int i;
  unsigned int len;
  unsigned long u;
 
  len = 0;
  i = scan_ulong(s,&u); if (!i) return 0; ip[0] = u; s += i; len += i;
  if (*s != '.') return 0; ++s; ++len;
  i = scan_ulong(s,&u); if (!i) return 0; ip[1] = u; s += i; len += i;
  if (*s != '.') return 0; ++s; ++len;
  i = scan_ulong(s,&u); if (!i) return 0; ip[2] = u; s += i; len += i;
  if (*s != '.') return 0; ++s; ++len;
  i = scan_ulong(s,&u); if (!i) return 0; ip[3] = u; s += i; len += i;
  return len;
}

static void do_get(const char *action)
{
  unsigned long u;
  struct stat st;
  char ch;
  int r;
  unsigned int pos;
  int fd;

  if (!flagget)
    strerr_die2x(100,FATAL,MSG(ERR_NOT_AVAILABLE));
  hdr_subject(MSG(SUB_GET_MSG));
  hdr_ctboundary();
  copy(&qq,"text/top",flagcd);

  pos = str_len(ACTION_GET);
  if (!case_starts(action,ACTION_GET))
    pos = str_len(ALT_GET);

  if (action[pos] == '.' || action [pos] == '_') pos++;
  scan_ulong(action + pos,&u);

  stralloc_copys(&line,"archive/");
  stralloc_catb(&line,strnum,fmt_ulong(strnum,u / 100));
  stralloc_cats(&line,"/");
  stralloc_catb(&line,strnum,fmt_uint0(strnum,(unsigned int) (u % 100),2));
  stralloc_0(&line);

  fd = open_read(line.s);
  if (fd == -1)
    if (errno != error_noent)
      strerr_die2sys(111,FATAL,MSG1(ERR_OPEN,line.s));
    else
      copy_act("text/get-bad");
  else {
    if (fstat(fd,&st) == -1)
      copy_act("text/get-bad");
    else if (!(st.st_mode & 0100))
      copy_act("text/get-bad");
    else {
      showsend("get");
      substdio_fdbuf(&sstext,read,fd,textbuf,sizeof(textbuf));
      qmail_puts(&qq,"> ");
      for (;;) {
	r = substdio_get(&sstext,&ch,1);
	if (r == -1) strerr_die2sys(111,FATAL,MSG1(ERR_READ,line.s));
	if (r == 0) break;
	qmail_put(&qq,&ch,1);
	if (ch == '\n') qmail_puts(&qq,"> ");
      }
      qmail_puts(&qq,"\n");
    }
    close(fd);
  }
  copybottom(0);
  qmail_to(&qq,target.s);
}

void c_init(char **script)
{
  int i;
  struct cyclog *d;
  char *processor;
  unsigned long num;
  unsigned long size;

  cnum = 0;
  for (i = 0;script[i];++i)
    if ((script[i][0] == '.') || (script[i][0] == '/'))
      ++cnum;

  c = (struct cyclog *) alloc(cnum * sizeof(*c));
  if (!c) strerr_die2x(111,FATAL,"out of memory");

  d = c;
  processor = 0;
  num = 10;
  size = 99999;

  for (i = 0;script[i];++i)
    if (script[i][0] == 's') {
      scan_ulong(script[i] + 1,&size);
      if (size < 4096) size = 4096;
      if (size > 16777215) size = 16777215;
    }
    else if (script[i][0] == 'n') {
      scan_ulong(script[i] + 1,&num);
      if (num < 2) num = 2;
    }
    else if (script[i][0] == '!') {
      processor = script[i] + 1;
    }
    else if ((script[i][0] == '.') || (script[i][0] == '/')) {
      d->num = num;
      d->size = size;
      d->processor = processor;
      d->dir = script[i];
      buffer_init(&d->ss,c_write,d - c,d->buf,sizeof d->buf);
      restart(d);
      ++d;
    }
}

unsigned int scan_ushort(char *s, unsigned short *u)
{
  unsigned long l;
  unsigned int r;

  r = scan_ulong(s, &l);
  *u = l;

  return r;
}

unsigned int scan_uint(const char *s, unsigned int *up)
{
  unsigned long ul;
  unsigned int ui;
  unsigned int len;

  len = scan_ulong(s, &ul);
  if (!len) return 0;

  ui = (unsigned int) ul; *up = ui;
  return len;
}

unsigned int scan_long(register const char* s,register long* i)
{
    int sign;
    unsigned long u;
    register unsigned int len;
    len = scan_plusminus(s,&sign);
    s += len;
    len += scan_ulong(s,&u);
    if (sign < 0) *i = -u;
    else *i = u;
    return len;
}

void
log_init(int fd, unsigned long mask, int via_spawn)
/* 
 * Known LOGLEVELs: 
 */
{
	char *a = env_get("LOGLEVEL");
	
	loglevel = 0;
	addLOG = via_spawn;
	if ( a && *a ) {
		scan_ulong(a, &loglevel);
	} else if ((a = env_get("DEBUGLEVEL")) && *a ) {
		scan_ulong(a, &loglevel);
	}
	loglevel &= mask;

	substdio_fdbuf(&sslog, subwrite, fd, logbuffer, sizeof(logbuffer) );
/*	logit(4, "LOGLEVEL set to %i\n", loglevel);
 */
}