1 files changed, 58 insertions, 0 deletions
diff --git a/src/libs6net/s6net_ident_reply_parse.c b/src/libs6net/s6net_ident_reply_parse.c
new file mode 100644
index 0000000..a895d60
--- /dev/null
+++ b/src/libs6net/s6net_ident_reply_parse.c
@@ -0,0 +1,58 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/uint16.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/error.h>
+#include <s6-networking/ident.h>
+
+static unsigned int skipspace (char const *s)
+{
+  register unsigned int n = 0 ;
+  while ((s[n] == ' ') || (s[n] == '\t')) n++ ;
+  return n ;
+}
+
+int s6net_ident_reply_parse (char const *s, uint16 rp, uint16 lp)
+{
+  unsigned int n = 0 ;
+  n += skipspace(s+n) ; if (!s[n]) goto err ;
+  {
+    unsigned int i ;
+    uint16 u ;
+    i = uint16_scan(s+n, &u) ; if (!i) goto err ; n += i ;
+    if (u != rp) goto err ;
+    n += skipspace(s+n) ; if (!s[n]) goto err ;
+    if (s[n++] != ',') goto err ;
+    n += skipspace(s+n) ; if (!s[n]) goto err ;
+    i = uint16_scan(s+n, &u) ; if (!i) goto err ; n += i ;
+    if (u != lp) goto err ;
+  }
+  n += skipspace(s+n) ; if (!s[n]) goto err ;
+  if (s[n++] != ':') goto err ;
+  n += skipspace(s+n) ; if (!s[n]) goto err ;
+  if (!str_diffn(s+n, "ERROR", 5)) goto ERROR ;
+  if (!str_diffn(s+n, "USERID", 6)) goto USERID ;
+ err:
+  return (errno = EPROTO, -1) ;
+
+ ERROR:
+  n += 5 ;
+  n += skipspace(s+n) ; if (!s[n]) goto err ;
+  if (s[n++] != ':') goto err ;
+  n += skipspace(s+n) ; if (!s[n]) goto err ;
+  if (!str_diffn(s+n, "INVALID-PORT", 12)) return (errno = EINVAL, 0) ;
+  if (!str_diffn(s+n, "NO-USER", 7)) return (errno = ESRCH, 0) ;
+  if (!str_diffn(s+n, "HIDDEN-USER", 11)) return (errno = EPERM, 0) ;
+  if (!str_diffn(s+n, "UNKNOWN-ERROR", 13)) return (errno = EIO, 0) ;
+  if (s[n] == 'X') return (errno = EEXIST, 0) ;
+  goto err ;
+
+ USERID:
+  n += 6 ;
+  n += skipspace(s+n) ; if (!s[n]) goto err ;
+  if (s[n++] != ':') goto err ;
+  n += str_chr(s+n, ':') ; if (!s[n]) goto err ;
+  n++ ; if ((s[n] == ' ') || (s[n] == '\t')) n++ ;
+  return n ;
+}