Add s6-dnsip, prepare for 2.3.3.0, fix resolvenoq_aaaaa

TODO: resolveq_aaaaa returns the best (1 answer) whereas we
want both ip6 and ip4 when available. It works with noq, it
should work with q too.

1 files changed, 67 insertions, 0 deletions

diff --git a/src/clients/s6-dnsip.c b/src/clients/s6-dnsip.c
new file mode 100644
index 0000000..f4c1a58
--- /dev/null
+++ b/src/clients/s6-dnsip.c
@@ -0,0 +1,67 @@
+/* ISC license. */
+
+#include <string.h>
+#include <errno.h>
+
+#include <skalibs/types.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/ip46.h>
+#include <skalibs/genalloc.h>
+#include <skalibs/buffer.h>
+#include <skalibs/tai.h>
+#include <skalibs/random.h>
+#include <s6-dns/s6dns.h>
+
+#define USAGE "s6-dnsip [ -q ] [ -r ] [ -t timeout ] domain"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv)
+{
+  genalloc ips = GENALLOC_ZERO ;  /* ip46full_t */
+  tain_t deadline ;
+  size_t i = 0 ;
+  unsigned int t = 0 ;
+  int flagqualify = 0 ;
+  int flagunsort = 0 ;
+  PROG = "s6-dnsip" ;
+
+  for (;;)
+  {
+    int opt = subgetopt(argc, argv, "qrt:") ;
+    if (opt == -1) break ;
+    switch (opt)
+    {
+      case 'q' : flagqualify = 1 ; break ;
+      case 'r' : flagunsort = 1 ; break ;
+      case 't' : if (!uint0_scan(subgetopt_here.arg, &t)) dieusage() ; break ;
+      default : dieusage() ;
+    }
+  }
+  argc -= subgetopt_here.ind ; argv += subgetopt_here.ind ;
+  if (argc < 1) dieusage() ;
+
+  tain_now_set_stopwatch_g() ;
+  if (t) tain_from_millisecs(&deadline, t) ; else deadline = tain_infinite_relative ;
+  tain_add_g(&deadline, &deadline) ;
+  if (!s6dns_init()) strerr_diefu1sys(111, "s6dns_init") ;
+  {
+    int r = s6dns_resolve_aaaaa_g(&ips, argv[0], strlen(argv[0]), flagqualify, &deadline) ;
+    if (r < 0) strerr_diefu2sys((errno == ETIMEDOUT) ? 99 : 111, "resolve ", argv[0]) ;
+    if (!r) strerr_diefu4x(2, "resolve ", argv[0], ": ", s6dns_constants_error_str(errno)) ;
+  }
+  if (!genalloc_len(ip46full_t, &ips)) return 1 ;
+
+  if (flagunsort) random_unsort(ips.s, genalloc_len(ip46full_t, &ips), sizeof(ip46full_t)) ;
+  for (i = 0 ; i < genalloc_len(ip46full_t, &ips) ; i++)
+  {
+    char fmt[IP6_FMT] ;
+    size_t n = ip46full_fmt(fmt, genalloc_s(ip46full_t, &ips) + i) ;
+    fmt[n++] = '\n' ;
+    if (buffer_put(buffer_1small, fmt, n) < (ssize_t)n)
+      strerr_diefu1sys(111, "write to stdout") ;
+  }
+  if (!buffer_flush(buffer_1small))
+    strerr_diefu1sys(111, "write to stdout") ;
+  return 0 ;
+}