hurd: Fix build

[thirdparty/glibc.git] / resolv / ns_samedomain.c

diff --git a/resolv/ns_samedomain.c b/resolv/ns_samedomain.c
index 1fb1c552d065b07b2f08c71cee3651969afd502e..5d1bf39fc7280d3b44d87122fd37b9244daa2875 100644 (file)
--- a/resolv/ns_samedomain.c
+++ b/resolv/ns_samedomain.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
  * Copyright (c) 1995,1999 by Internet Software Consortium.
  *
  * Permission to use, copy, modify, and distribute this software for any
@@ -15,30 +16,27 @@
  * SOFTWARE.
  */
 
-#if !defined(_LIBC) && !defined(lint)
-static const char rcsid[] = "$BINDId: ns_samedomain.c,v 8.9 1999/10/15 21:06:51 vixie Exp $";
-#endif
-
 #include <sys/types.h>
 #include <arpa/nameser.h>
 #include <errno.h>
 #include <string.h>
 
-/*
- * int
- * ns_samedomain(a, b)
+/*%
  *     Check whether a name belongs to a domain.
+ *
  * Inputs:
- *     a - the domain whose ancestory is being verified
- *     b - the potential ancestor we're checking against
+ *\li  a - the domain whose ancestry is being verified
+ *\li  b - the potential ancestor we're checking against
+ *
  * Return:
- *     boolean - is a at or below b?
+ *\li  boolean - is a at or below b?
+ *
  * Notes:
- *     Trailing dots are first removed from name and domain.
+ *\li  Trailing dots are first removed from name and domain.
  *     Always compare complete subdomains, not only whether the
  *     domain name is the trailing string of the given name.
  *
- *     "host.foobar.top" lies in "foobar.top" and in "top" and in ""
+ *\li  "host.foobar.top" lies in "foobar.top" and in "top" and in ""
  *     but NOT in "bar.top"
  */
 
@@ -52,7 +50,7 @@ ns_samedomain(const char *a, const char *b) {
        lb = strlen(b);
 
        /* Ignore a trailing label separator (i.e. an unescaped dot) in 'a'. */
-       if (la != 0 && a[la - 1] == '.') {
+       if (la != 0U && a[la - 1] == '.') {
                escaped = 0;
                /* Note this loop doesn't get executed if la==1. */
                for (i = la - 2; i >= 0; i--)
@@ -68,7 +66,7 @@ ns_samedomain(const char *a, const char *b) {
        }
 
        /* Ignore a trailing label separator (i.e. an unescaped dot) in 'b'. */
-       if (lb != 0 && b[lb - 1] == '.') {
+       if (lb != 0U && b[lb - 1] == '.') {
                escaped = 0;
                /* note this loop doesn't get executed if lb==1 */
                for (i = lb - 2; i >= 0; i--)
@@ -84,7 +82,7 @@ ns_samedomain(const char *a, const char *b) {
        }
 
        /* lb == 0 means 'b' is the root domain, so 'a' must be in 'b'. */
-       if (lb == 0)
+       if (lb == 0U)
                return (1);
 
        /* 'b' longer than 'a' means 'a' can't be in 'b'. */
@@ -121,24 +119,23 @@ ns_samedomain(const char *a, const char *b) {
         */
        escaped = 0;
        for (i = diff - 2; i >= 0; i--)
-               if (a[i] == '\\')
+               if (a[i] == '\\') {
                        if (escaped)
                                escaped = 0;
                        else
                                escaped = 1;
-               else
+               } else
                        break;
        if (escaped)
                return (0);
-         
+
        /* Now compare aligned trailing substring. */
        cp = a + diff;
        return (strncasecmp(cp, b, lb) == 0);
 }
+libresolv_hidden_def (ns_samedomain)
 
-/*
- * int
- * ns_subdomain(a, b)
+/*%
  *     is "a" a subdomain of "b"?
  */
 int
@@ -146,30 +143,31 @@ ns_subdomain(const char *a, const char *b) {
        return (ns_samename(a, b) != 1 && ns_samedomain(a, b));
 }
 
-/*
- * int
- * ns_makecanon(src, dst, dstsize)
+/*%
  *     make a canonical copy of domain name "src"
+ *
  * notes:
+ * \code
  *     foo -> foo.
  *     foo. -> foo.
  *     foo.. -> foo.
  *     foo\. -> foo\..
  *     foo\\. -> foo\\.
+ * \endcode
  */
 
 int
 ns_makecanon(const char *src, char *dst, size_t dstsize) {
        size_t n = strlen(src);
 
-       if (n + sizeof "." > dstsize) {
+       if (n + sizeof "." > dstsize) {                 /*%< Note: sizeof == 2 */
                __set_errno (EMSGSIZE);
                return (-1);
        }
        strcpy(dst, src);
-       while (n > 0 && dst[n - 1] == '.')              /* Ends in "." */
-               if (n > 1 && dst[n - 2] == '\\' &&      /* Ends in "\." */
-                   (n < 2 || dst[n - 3] != '\\'))      /* But not "\\." */
+       while (n >= 1U && dst[n - 1] == '.')            /*%< Ends in "." */
+               if (n >= 2U && dst[n - 2] == '\\' &&    /*%< Ends in "\." */
+                   (n < 3U || dst[n - 3] != '\\'))     /*%< But not "\\." */
                        break;
                else
                        dst[--n] = '\0';
@@ -177,15 +175,15 @@ ns_makecanon(const char *src, char *dst, size_t dstsize) {
        dst[n] = '\0';
        return (0);
 }
+libresolv_hidden_def (ns_makecanon)
 
-/*
- * int
- * ns_samename(a, b)
+/*%
  *     determine whether domain name "a" is the same as domain name "b"
+ *
  * return:
- *     -1 on error
- *     0 if names differ
- *     1 if names are the same
+ *\li  -1 on error
+ *\li  0 if names differ
+ *\li  1 if names are the same
  */
 
 int
@@ -200,3 +198,6 @@ ns_samename(const char *a, const char *b) {
        else
                return (0);
 }
+libresolv_hidden_def (ns_samename)
+
+/*! \file */