@@ -1761,6 +1761,66 @@ scopecmp (const void *p1, const void *p2)
return 1;
}
+static bool
+add_prefixlist (struct prefixlist **listp, size_t *lenp, bool *nullbitsp,
+ char *val1, char *val2, char **pos)
+{
+ struct in6_addr prefix;
+ unsigned long int bits;
+ unsigned long int val;
+ char *endp;
+
+ bits = 128;
+ __set_errno (0);
+ char *cp = strchr (val1, '/');
+ if (cp != NULL)
+ *cp++ = '\0';
+ *pos = cp;
+ if (inet_pton (AF_INET6, val1, &prefix)
+ && (cp == NULL
+ || (bits = strtoul (cp, &endp, 10)) != ULONG_MAX
+ || errno != ERANGE)
+ && *endp == '\0'
+ && bits <= 128
+ && ((val = strtoul (val2, &endp, 10)) != ULONG_MAX
+ || errno != ERANGE)
+ && *endp == '\0'
+ && val <= INT_MAX)
+ {
+ struct prefixlist *newp = malloc (sizeof (*newp));
+ if (newp == NULL)
+ return false;
+
+ memcpy (&newp->entry.prefix, &prefix, sizeof (prefix));
+ newp->entry.bits = bits;
+ newp->entry.val = val;
+ newp->next = *listp;
+ *listp = newp;
+ ++*lenp;
+ *nullbitsp |= bits == 0;
+ }
+ return true;
+}
+
+static bool
+add_scopelist (struct scopelist **listp, size_t *lenp, bool *nullbitsp,
+ const struct in6_addr *prefixp, unsigned long int bits,
+ unsigned long int val)
+{
+ struct scopelist *newp = malloc (sizeof (*newp));
+ if (newp == NULL)
+ return false;
+
+ newp->entry.netmask = htonl (bits != 96 ? (0xffffffff << (128 - bits)) : 0);
+ newp->entry.addr32 = (prefixp->s6_addr32[3] & newp->entry.netmask);
+ newp->entry.scope = val;
+ newp->next = *listp;
+ *listp = newp;
+ ++*lenp;
+ *nullbitsp |= bits == 96;
+
+ return true;
+}
static void
gaiconf_init (void)
@@ -1836,55 +1896,17 @@ gaiconf_init (void)
/* Ignore the rest of the line. */
*cp = '\0';
- struct prefixlist **listp;
- size_t *lenp;
- bool *nullbitsp;
switch (cmdlen)
{
case 5:
if (strcmp (cmd, "label") == 0)
{
- struct in6_addr prefix;
- unsigned long int bits;
- unsigned long int val;
- char *endp;
-
- listp = &labellist;
- lenp = &nlabellist;
- nullbitsp = &labellist_nullbits;
-
- new_elem:
- bits = 128;
- __set_errno (0);
- cp = strchr (val1, '/');
- if (cp != NULL)
- *cp++ = '\0';
- if (inet_pton (AF_INET6, val1, &prefix)
- && (cp == NULL
- || (bits = strtoul (cp, &endp, 10)) != ULONG_MAX
- || errno != ERANGE)
- && *endp == '\0'
- && bits <= 128
- && ((val = strtoul (val2, &endp, 10)) != ULONG_MAX
- || errno != ERANGE)
- && *endp == '\0'
- && val <= INT_MAX)
+ if (!add_prefixlist (&labellist, &nlabellist,
+ &labellist_nullbits, val1, val2, &cp))
{
- struct prefixlist *newp = malloc (sizeof (*newp));
- if (newp == NULL)
- {
- free (line);
- fclose (fp);
- goto no_file;
- }
-
- memcpy (&newp->entry.prefix, &prefix, sizeof (prefix));
- newp->entry.bits = bits;
- newp->entry.val = val;
- newp->next = *listp;
- *listp = newp;
- ++*lenp;
- *nullbitsp |= bits == 0;
+ free (line);
+ fclose (fp);
+ goto no_file;
}
}
break;
@@ -1926,27 +1948,14 @@ gaiconf_init (void)
&& *endp == '\0'
&& val <= INT_MAX)
{
- struct scopelist *newp;
- new_scope:
- newp = malloc (sizeof (*newp));
- if (newp == NULL)
+ if (!add_scopelist (&scopelist, &nscopelist,
+ &scopelist_nullbits, &prefix,
+ bits, val))
{
free (line);
fclose (fp);
goto no_file;
}
-
- newp->entry.netmask = htonl (bits != 96
- ? (0xffffffff
- << (128 - bits))
- : 0);
- newp->entry.addr32 = (prefix.s6_addr32[3]
- & newp->entry.netmask);
- newp->entry.scope = val;
- newp->next = scopelist;
- scopelist = newp;
- ++nscopelist;
- scopelist_nullbits |= bits == 96;
}
}
else if (inet_pton (AF_INET, val1, &prefix.s6_addr32[3])
@@ -1960,8 +1969,14 @@ gaiconf_init (void)
&& *endp == '\0'
&& val <= INT_MAX)
{
- bits += 96;
- goto new_scope;
+ if (!add_scopelist (&scopelist, &nscopelist,
+ &scopelist_nullbits, &prefix,
+ bits + 96, val))
+ {
+ free (line);
+ fclose (fp);
+ goto no_file;
+ }
}
}
break;
@@ -1969,10 +1984,14 @@ gaiconf_init (void)
case 10:
if (strcmp (cmd, "precedence") == 0)
{
- listp = &precedencelist;
- lenp = &nprecedencelist;
- nullbitsp = &precedencelist_nullbits;
- goto new_elem;
+ if (!add_prefixlist (&precedencelist, &nprecedencelist,
+ &precedencelist_nullbits, val1, val2,
+ &cp))
+ {
+ free (line);
+ fclose (fp);
+ goto no_file;
+ }
}
break;
}
Split out line processing for `label`, `precedence` and `scopev4` into separate functions instead of the gotos. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> --- sysdeps/posix/getaddrinfo.c | 149 ++++++++++++++++++++---------------- 1 file changed, 84 insertions(+), 65 deletions(-)