X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=client%2Fadh-query.c;h=cc5dc122f2846f194aaee48244063b43b9e7b0d7;hb=10554ed5982b03b2a486c0f09d479f8806f04c6a;hp=fa8577977f7aacb5bf138daf64adb4a56f8ba768;hpb=d1cff511d87e902d96bcd39544635f81728de1ae;p=adns.git

diff --git a/client/adh-query.c b/client/adh-query.c
index fa85779..cc5dc12 100644
--- a/client/adh-query.c
+++ b/client/adh-query.c
@@ -26,32 +26,37 @@
  *  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
  */
 
-struct query_node {
-  struct query_node *next, *back;
-  struct perqueryflags_remember pqfr;
-  char *id;
-  adns_query qu;
-};
+#include "adnshost.h"
 
-static adns_state ads;
-static struct { struct query_node *head, *tail; } outstanding;
+adns_state ads;
+struct outstanding_list outstanding;
 
 static unsigned long idcounter;
 
-static void domain_do(const char *domain) {
-  struct query_node *qun;
-  char idbuf[20];
+void ensure_adns_init(void) {
+  int r;
+  
+  if (ads) return;
 
-  if (!ads) {
-    if (signal(SIGPIPE,SIG_IGN) == SIG_ERR) sysfail("ignore SIGPIPE");
-    r= adns_init(&ads,
-		 adns_if_noautosys|adns_if_nosigpipe |
-		 (ov_env ? 0 : adns_ifnoenv) |
-		 ov_verbose,
-		 0);
-    if (r) sysfail("adns_init",r);
-  }
+  if (signal(SIGPIPE,SIG_IGN) == SIG_ERR) sysfail("ignore SIGPIPE",errno);
+  r= adns_init(&ads,
+	       adns_if_noautosys|adns_if_nosigpipe |
+	       (ov_env ? 0 : adns_if_noenv) |
+	       ov_verbose,
+	       0);
+  if (r) sysfail("adns_init",r);
 
+  if (ov_format == fmt_default)
+    ov_format= ov_asynch ? fmt_asynch : fmt_simple;
+}
+
+static void prep_query(struct query_node **qun_r, int *quflags_r) {
+  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) {
@@ -61,18 +66,215 @@ static void domain_do(const char *domain) {
     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;
+}
   
-  r= adns_submit(ads, domain, type,
-		 (ov_search ? adns_qf_search : 0) |
-		 (ov_tcp ? adns_qf_usevc : 0) |
-		 (ov_pqfr.show_owner ? 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,
+void of_ptr(const struct optioninfo *oi, const char *arg) {
+  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);
+}
+
+void query_do(const char *domain) {
+  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);
 
-  DLIST_LINK_TAIL(outstanding,qun);
+  LIST_LINK_TAIL(outstanding,qun);
+}
+
+static void dequeue_query(struct query_node *qun) {
+  LIST_UNLINK(outstanding,qun);
+  free(qun->id);
+  free(qun);
+}
+
+static void print_withspace(const char *str) {
+  if (printf("%s ", str) == EOF) outerr();
+}
+
+static void print_ttl(struct query_node *qun, adns_answer *answer) {
+  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();
+}
+
+static const char *owner_show(struct query_node *qun, adns_answer *answer) {
+  return answer->owner ? answer->owner : qun->owner;
+}
+
+static void print_owner_ttl(struct query_node *qun, adns_answer *answer) {
+  if (qun->pqfr.show_owner) print_withspace(owner_show(qun,answer));
+  print_ttl(qun,answer);
+}
+
+static void check_status(adns_status st) {
+  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;
+}
+
+static void print_status(adns_status st, struct query_node *qun, adns_answer *answer) {
+  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();
+}
+
+static void print_dnsfail(adns_status st, struct query_node *qun, adns_answer *answer) {
+  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);
+}
+    
+void query_done(struct query_node *qun, adns_answer *answer) {
+  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);
+}
+
+void of_asynch_id(const struct optioninfo *oi, const char *arg) {
+  free(ov_id);
+  ov_id= xstrsave(arg);
+}
+
+void of_cancel_id(const struct optioninfo *oi, const char *arg) {
+  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);
 }