1 files changed, 78 insertions, 0 deletions
diff --git a/src/clients/s6-dnstxt.c b/src/clients/s6-dnstxt.c
new file mode 100644
index 0000000..fde69d2
--- /dev/null
+++ b/src/clients/s6-dnstxt.c
@@ -0,0 +1,78 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/uint.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/buffer.h>
+#include <skalibs/tai.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/genalloc.h>
+#include <skalibs/skamisc.h>
+#include <skalibs/random.h>
+#include <s6-dns/s6dns.h>
+
+#define USAGE "s6-dnstxt [ -q ] [ -r ] [ -t timeout ] name"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv)
+{
+  stralloc quoted = STRALLOC_ZERO ;
+  stralloc sa = STRALLOC_ZERO ;
+  genalloc offsets = GENALLOC_ZERO ; /* array of unsigned int */
+  tain_t deadline, stamp ;
+  unsigned int n ;
+  unsigned int i = 0 ;
+  int flagqualify = 0 ;
+  int flagunsort = 0 ;
+  PROG = "s6-dnstxt" ;
+  for (;;)
+  {
+    register 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, &i)) dieusage() ; break ;
+      default : dieusage() ;
+    }
+  }
+  argc -= subgetopt_here.ind ; argv += subgetopt_here.ind ;
+  if (argc < 1) dieusage() ;
+
+  tain_now(&stamp) ;
+  if (i) tain_from_millisecs(&deadline, i) ; else deadline = tain_infinite_relative ;
+  tain_add(&deadline, &deadline, &stamp) ;
+  if (!s6dns_init()) strerr_diefu1sys(111, "s6dns_init") ;
+  {
+    register int r = s6dns_resolve_txt(&sa, &offsets, argv[0], str_len(argv[0]), flagqualify, &deadline, &stamp) ;
+    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)) ;
+  }
+  n = genalloc_len(unsigned int, &offsets) ;
+  if (!n) return 1 ;
+  {
+    unsigned int printable_offsets[n] ;
+    for (i = 0 ; i < n ; i++)
+    {
+      unsigned int beg = genalloc_s(unsigned int, &offsets)[i] ;
+      unsigned int end = (i < n-1 ? genalloc_s(unsigned int, &offsets)[i+1] : sa.len) - 1 ;
+      printable_offsets[i] = quoted.len ;
+      if (!string_quote(&quoted, sa.s + beg, end - beg) || !stralloc_0(&quoted))
+        strerr_diefu2sys(111, "quote ", sa.s + beg) ;
+    }
+    genalloc_free(unsigned int, &offsets) ;
+    stralloc_free(&sa) ;
+    if (flagunsort) random_unsort((char *)printable_offsets, n, sizeof(unsigned int)) ;
+    for (i = 0 ; i < n ; i++)
+      if ((buffer_puts(buffer_1small, quoted.s + printable_offsets[i]) < 0)
+       || (buffer_put(buffer_1small, "\n", 1) < 1))
+        strerr_diefu1sys(111, "write to stdout") ;
+  }
+  stralloc_free(&quoted) ;
+  if (!buffer_flush(buffer_1small))
+    strerr_diefu1sys(111, "write to stdout") ;
+  return 0 ;
+}