adh-query.c File Reference

#include "adnshost.h"

Include dependency graph for adh-query.c:

Go to the source code of this file.

Functions
void	ensure_adns_init (void)
static void	prep_query (struct query_node **qun_r, int *quflags_r)
void	of_ptr (const struct optioninfo *oi, const char *arg, const char *arg2)
void	of_reverse (const struct optioninfo *oi, const char *arg, const char *arg2)
void	query_do (const char *domain)
static void	dequeue_query (struct query_node *qun)
static void	print_withspace (const char *str)
static void	print_ttl (struct query_node *qun, adns_answer *answer)
static const char *	owner_show (struct query_node *qun, adns_answer *answer)
static void	print_owner_ttl (struct query_node *qun, adns_answer *answer)
static void	check_status (adns_status st)
static void	print_status (adns_status st, struct query_node *qun, adns_answer *answer)
static void	print_dnsfail (adns_status st, struct query_node *qun, adns_answer *answer)
void	query_done (struct query_node *qun, adns_answer *answer)
void	of_asynch_id (const struct optioninfo *oi, const char *arg, const char *arg2)
void	of_cancel_id (const struct optioninfo *oi, const char *arg, const char *arg2)

Variables
adns_state	ads
struct outstanding_list	outstanding
static unsigned long	idcounter

Function Documentation

check_status()

static void check_status ( adns_status  st )

static

Definition at line 194 of file adh-query.c.

                                         {
  static const adns_status statuspoints[]= {
    adns_s_ok,
    adns_s_max_localfail, adns_s_max_remotefail, adns_s_max_tempfail,
    adns_s_max_misconfig, adns_s_max_misquery
  };
 
  const adns_status *spp;
  int minrcode;
 
  for (minrcode=0, spp=statuspoints;
       spp < statuspoints + (sizeof(statuspoints)/sizeof(statuspoints[0]));
       spp++)
    if (st > *spp) minrcode++;
  if (rcode < minrcode) rcode= minrcode;
}

Referenced by query_done().

dequeue_query()

static void dequeue_query ( struct query_node *  qun )

static

Definition at line 154 of file adh-query.c.

                                                  {
  LIST_UNLINK(outstanding,qun);
  free(qun->id);
  free(qun->owner);
  free(qun);
}

Referenced by of_cancel_id(), and query_done().

ensure_adns_init()

void ensure_adns_init

(

void

)

Definition at line 40 of file adh-query.c.

                            {
  adns_initflags initflags;
  int r;
 
  if (ads) return;
 
#ifdef SIGPIPE
  if (signal(SIGPIPE,SIG_IGN) == SIG_ERR) sysfail("ignore SIGPIPE",errno);
#endif
 
  initflags= adns_if_noautosys|adns_if_nosigpipe|ov_verbose;
  if (!ov_env) initflags |= adns_if_noenv;
 
  if (config_text) {
    r= adns_init_strcfg(&ads, initflags, stderr, config_text);
  } else {
    r= adns_init(&ads, initflags, 0);
  }
  if (r) sysfail("adns_init",r);
 
  if (ov_format == fmt_default)
    ov_format= ov_asynch ? fmt_asynch : fmt_simple;
}

Referenced by main(), and prep_query().

of_asynch_id()

void of_asynch_id	(	const struct optioninfo *	oi,
		const char *	arg,
		const char *	arg2
	)

Definition at line 301 of file adh-query.c.

                                                                                  {
  free(ov_id);
  ov_id= xstrsave(arg);
}

of_cancel_id()

void of_cancel_id	(	const struct optioninfo *	oi,
		const char *	arg,
		const char *	arg2
	)

Definition at line 306 of file adh-query.c.

                                                                                  {
  struct query_node *qun;
 
  for (qun= outstanding.head;
       qun && strcmp(qun->id,arg);
       qun= qun->next);
  if (!qun) return;
  adns_cancel(qun->qu);
  dequeue_query(qun);
}

of_ptr()

void of_ptr	(	const struct optioninfo *	oi,
		const char *	arg,
		const char *	arg2
	)

Definition at line 93 of file adh-query.c.

                                                                            {
  struct query_node *qun;
  int quflags, r;
  struct sockaddr_in sa;
 
  memset(&sa,0,sizeof(sa));
  sa.sin_family= AF_INET;
  if (!inet_aton(arg,&sa.sin_addr)) usageerr("invalid IP address %s",arg);
 
  prep_query(&qun,&quflags);
  qun->owner= xstrsave(arg);
  r= adns_submit_reverse(ads,
             (struct sockaddr*)&sa,
             ov_type == adns_r_none ? adns_r_ptr : ov_type,
             quflags,
             qun,
             &qun->qu);
  if (r) sysfail("adns_submit_reverse",r);
 
  LIST_LINK_TAIL(outstanding,qun);
}

of_reverse()

void of_reverse	(	const struct optioninfo *	oi,
		const char *	arg,
		const char *	arg2
	)

Definition at line 115 of file adh-query.c.

                                                                                {
  struct query_node *qun;
  int quflags, r;
  struct sockaddr_in sa;
 
  memset(&sa,0,sizeof(sa));
  sa.sin_family= AF_INET;
  if (!inet_aton(arg,&sa.sin_addr)) usageerr("invalid IP address %s",arg);
 
  prep_query(&qun,&quflags);
  qun->owner= xmalloc(strlen(arg) + strlen(arg2) + 2);
  sprintf(qun->owner, "%s %s", arg,arg2);
  r= adns_submit_reverse_any(ads,
                 (struct sockaddr*)&sa, arg2,
                 ov_type == adns_r_none ? adns_r_txt : ov_type,
                 quflags,
                 qun,
                 &qun->qu);
  if (r) sysfail("adns_submit_reverse",r);
 
  LIST_LINK_TAIL(outstanding,qun);
}

owner_show()

static const char * owner_show ( struct query_node *  qun, adns_answer *  answer  )

static

Definition at line 185 of file adh-query.c.

                                                                           {
  return answer->owner ? answer->owner : qun->owner;
}

Referenced by print_dnsfail(), print_owner_ttl(), and query_done().

prep_query()

static void prep_query ( struct query_node **  qun_r, int *  quflags_r  )

static

Definition at line 64 of file adh-query.c.

                                                                  {
  struct query_node *qun;
  char idbuf[20];
 
  if (ov_pipe && !ads) usageerr("-f/--pipe not consistent with domains on command line");
  ensure_adns_init();
 
  qun= malloc(sizeof(*qun));
  qun->pqfr= ov_pqfr;
  if (ov_id) {
    qun->id= xstrsave(ov_id);
  } else {
    sprintf(idbuf,"%lu",idcounter++);
    idcounter &= 0x0fffffffflu;
    qun->id= xstrsave(idbuf);
  }
 
  *quflags_r=
    (ov_search ? adns_qf_search : 0) |
    (ov_tcp ? adns_qf_usevc : 0) |
    ((ov_pqfr.show_owner || ov_format == fmt_simple) ? adns_qf_owner : 0) |
    (ov_qc_query ? adns_qf_quoteok_query : 0) |
    (ov_qc_anshost ? adns_qf_quoteok_anshost : 0) |
    (ov_qc_cname ? 0 : adns_qf_quoteok_cname) |
    ov_cname,
 
  *qun_r= qun;
}

Referenced by of_ptr(), of_reverse(), and query_do().

print_dnsfail()

static void print_dnsfail ( adns_status  st, struct query_node *  qun, adns_answer *  answer  )

static

Definition at line 227 of file adh-query.c.

                                                                                       {
  int r;
  const char *typename, *statusstring;
  adns_status ist;
 
  if (ov_format == fmt_inline) {
    if (fputs("; failed ",stdout) == EOF) outerr();
    print_status(st,qun,answer);
    return;
  }
  assert(ov_format == fmt_simple);
  if (st == adns_s_nxdomain) {
    r= fprintf(stderr,"%s does not exist\n", owner_show(qun,answer));
  } else {
    ist= adns_rr_info(answer->type, &typename, 0,0,0,0);
    if (st == adns_s_nodata) {
      r= fprintf(stderr,"%s has no %s record\n", owner_show(qun,answer), typename);
    } else {
      statusstring= adns_strerror(st);
      r= fprintf(stderr,"Error during DNS %s lookup for %s: %s\n",
         typename, owner_show(qun,answer), statusstring);
    }
  }
  if (r == EOF) sysfail("write error message to stderr",errno);
}

Referenced by query_done().

print_owner_ttl()

static void print_owner_ttl ( struct query_node *  qun, adns_answer *  answer  )

static

Definition at line 189 of file adh-query.c.

                                                                         {
  if (qun->pqfr.show_owner) print_withspace(owner_show(qun,answer));
  print_ttl(qun,answer);
}

Referenced by print_status(), and query_done().

print_status()

static void print_status ( adns_status  st, struct query_node *  qun, adns_answer *  answer  )

static

Definition at line 211 of file adh-query.c.

                                                                                      {
  const char *statustypeabbrev, *statusabbrev, *statusstring;
 
  statustypeabbrev= adns_errtypeabbrev(st);
  statusabbrev= adns_errabbrev(st);
  statusstring= adns_strerror(st);
  assert(!strchr(statusstring,'"'));
 
  if (printf("%s %d %s ", statustypeabbrev, st, statusabbrev)
      == EOF) outerr();
  print_owner_ttl(qun,answer);
  if (qun->pqfr.show_cname)
    print_withspace(answer->cname ? answer->cname : "$");
  if (printf("\"%s\"\n", statusstring) == EOF) outerr();
}

Referenced by print_dnsfail(), and query_done().

print_ttl()

static void print_ttl ( struct query_node *  qun, adns_answer *  answer  )

static

Definition at line 165 of file adh-query.c.

                                                                   {
  unsigned long ttl;
  time_t now;
 
  switch (qun->pqfr.ttl) {
  case tm_none:
    return;
  case tm_rel:
    if (time(&now) == (time_t)-1) sysfail("get current time",errno);
    ttl= answer->expires < now ? 0 : answer->expires - now;
    break;
  case tm_abs:
    ttl= answer->expires;
    break;
  default:
    abort();
  }
  if (printf("%lu ",ttl) == EOF) outerr();
}

Referenced by print_owner_ttl(), and query_done().

print_withspace()

static void print_withspace ( const char *  str )

static

Definition at line 161 of file adh-query.c.

                                             {
  if (printf("%s ", str) == EOF) outerr();
}

Referenced by print_owner_ttl(), print_status(), and query_done().

query_do()

void query_do

(

const char *

domain

)

Definition at line 138 of file adh-query.c.

                                  {
  struct query_node *qun;
  int quflags, r;
 
  prep_query(&qun,&quflags);
  qun->owner= xstrsave(domain);
  r= adns_submit(ads, domain,
         ov_type == adns_r_none ? adns_r_addr : ov_type,
         quflags,
         qun,
         &qun->qu);
  if (r) sysfail("adns_submit",r);
 
  LIST_LINK_TAIL(outstanding,qun);
}

Referenced by process_optarg().

query_done()

void query_done	(	struct query_node *	qun,
		adns_answer *	answer
	)

Definition at line 253 of file adh-query.c.

                                                             {
  adns_status st, ist;
  int rrn, nrrs;
  const char *rrp, *realowner, *typename;
  char *datastr;
 
  st= answer->status;
  nrrs= answer->nrrs;
  if (ov_format == fmt_asynch) {
    check_status(st);
    if (printf("%s %d ", qun->id, nrrs) == EOF) outerr();
    print_status(st,qun,answer);
  } else {
    if (qun->pqfr.show_cname && answer->cname) {
      print_owner_ttl(qun,answer);
      if (qun->pqfr.show_type) print_withspace("CNAME");
      if (printf("%s\n", answer->cname) == EOF) outerr();
    }
    if (st) {
      check_status(st);
      print_dnsfail(st,qun,answer);
    }
  }
  if (qun->pqfr.show_owner) {
    realowner= answer->cname ? answer->cname : owner_show(qun,answer);
    assert(realowner);
  } else {
    realowner= 0;
  }
  if (nrrs) {
    for (rrn=0, rrp = answer->rrs.untyped;
     rrn < nrrs;
     rrn++, rrp += answer->rrsz) {
      if (realowner) print_withspace(realowner);
      print_ttl(qun,answer);
      ist= adns_rr_info(answer->type, &typename, 0, 0, rrp, &datastr);
      if (ist == adns_s_nomemory) sysfail("adns_rr_info failed",ENOMEM);
      assert(!ist);
      if (qun->pqfr.show_type) print_withspace(typename);
      if (printf("%s\n",datastr) == EOF) outerr();
      free(datastr);
    }
  }
  if (fflush(stdout)) outerr();
  free(answer);
  dequeue_query(qun);
}

Referenced by adns__consistency(), adns__query_done(), adns_cancel(), and main().

Variable Documentation

ads

adns_state ads

Definition at line 35 of file adh-query.c.

Referenced by _Function_class_(), addserver(), adns__autosys(), adns__consistency(), adns__debug(), adns__diag(), adns__diag_domain(), adns__fdevents(), adns__findlabel_start(), adns__internal_check(), adns__internal_submit(), adns__mkquery(), adns__mkquery_frdgram(), adns__must_gettimeofday(), adns__parse_domain(), adns__pollfds(), adns__procdgram(), adns__query_send(), adns__querysend_tcp(), adns__search_next(), adns__sigpipe_protect(), adns__sigpipe_unprotect(), adns__tcp_broken(), adns__tcp_tryconnect(), adns__timeouts(), adns__vdiag(), adns__warn(), adns_addserver(), adns_afterselect(), adns_beforeselect(), adns_cancel(), adns_ccf_search(), adns_check(), adns_checkconsistency(), adns_finish(), adns_firsttimeout(), adns_forallqueries_begin(), adns_forallqueries_next(), adns_globalsystemfailure(), adns_init(), adns_init_strcfg(), adns_numservers(), adns_processany(), adns_processexceptional(), adns_processreadable(), adns_processtimeouts(), adns_processwriteable(), adns_submit(), adns_submit_reverse(), adns_submit_reverse_any(), adns_synchronous(), adns_wait(), ccf_clearnss(), ccf_include(), ccf_nameserver(), ccf_options(), ccf_search(), ccf_sortlist(), checkc_global(), checkc_notcpbuf(), checkc_query(), checkc_queue_childw(), checkc_queue_output(), checkc_queue_tcpw(), checkc_queue_udpw(), configparseerr(), di_addr(), di_hostaddr(), di_inaddr(), di_mx(), dip_hostaddr(), dip_inaddr(), div_addr(), ensure_adns_init(), fd_event(), find(), freesearchlist(), gl_file(), gl_text(), icb_hostaddr(), icb_ptr(), init_abort(), init_begin(), init_finish(), instrum_getenv(), main(), mkquery_header(), of_ptr(), of_reverse(), prep_query(), query_alloc(), query_do(), query_simple(), quitnow(), readconfig(), readconfigenv(), readconfigenvtext(), readconfiggeneric(), readconfigtext(), saveerr(), search_sortlist(), tcp_close(), tcp_connected(), and tcp_events().

idcounter

unsigned long idcounter

static

Definition at line 38 of file adh-query.c.

Referenced by prep_query().

outstanding

struct outstanding_list outstanding

Definition at line 36 of file adh-query.c.

Referenced by AhciInterruptHandler(), dequeue_query(), main(), of_cancel_id(), of_ptr(), of_reverse(), and query_do().