PKGBUILDs/extra/bind/fix-FS#60286.patch
2018-10-20 22:44:07 +00:00

129 lines
3.6 KiB
Diff

diff --git a/lib/irs/getaddrinfo.c b/lib/irs/getaddrinfo.c
index 1b2df6d71c9a3df0e75c1f336833a136e0d6a06c..d5481c7afa605880b7c9e5ca17815d5f80e6ea5a 100644
--- a/lib/irs/getaddrinfo.c
+++ b/lib/irs/getaddrinfo.c
@@ -181,6 +181,47 @@ static void _freeaddrinfo(struct addrinfo *ai);
#define FOUND_IPV6 0x2
#define FOUND_MAX 2
+/*%
+ * Try converting the scope identifier in 'src' to a network interface index.
+ * Upon success, return true and store the resulting index in 'dst'. Upon
+ * failure, return false.
+ */
+static bool
+parse_scopeid(const char *src, uint32_t *dst) {
+ uint32_t scopeid = 0;
+
+ REQUIRE(src != NULL);
+ REQUIRE(dst != NULL);
+
+#ifdef HAVE_IF_NAMETOINDEX
+ /*
+ * Try using if_nametoindex() first if it is available. As it does not
+ * handle numeric scopes, we do not simply return if it fails.
+ */
+ scopeid = (uint32_t)if_nametoindex(src);
+#endif
+
+ /*
+ * Fall back to numeric scope processing if if_nametoindex() either
+ * fails or is unavailable.
+ */
+ if (scopeid == 0) {
+ char *endptr = NULL;
+ scopeid = (uint32_t)strtoul(src, &endptr, 10);
+ /*
+ * The scope identifier must not be empty and no trailing
+ * characters are allowed after it.
+ */
+ if (src == endptr || endptr == NULL || *endptr != '\0') {
+ return (false);
+ }
+ }
+
+ *dst = scopeid;
+
+ return (true);
+}
+
#define ISC_AI_MASK (AI_PASSIVE|AI_CANONNAME|AI_NUMERICHOST)
/*%
* Get a list of IP addresses and port numbers for host hostname and
@@ -365,39 +406,24 @@ getaddrinfo(const char *hostname, const char *servname,
char abuf[sizeof(struct in6_addr)];
char nbuf[NI_MAXHOST];
int addrsize, addroff;
-#ifdef IRS_HAVE_SIN6_SCOPE_ID
- char *p, *ep;
char ntmp[NI_MAXHOST];
- uint32_t scopeid;
-#endif
+ uint32_t scopeid = 0;
-#ifdef IRS_HAVE_SIN6_SCOPE_ID
/*
* Scope identifier portion.
*/
ntmp[0] = '\0';
if (strchr(hostname, '%') != NULL) {
+ char *p;
strlcpy(ntmp, hostname, sizeof(ntmp));
p = strchr(ntmp, '%');
- ep = NULL;
-
- /*
- * Vendors may want to support non-numeric
- * scopeid around here.
- */
- if (p != NULL)
- scopeid = (uint32_t)strtoul(p + 1,
- &ep, 10);
- if (p != NULL && ep != NULL && ep[0] == '\0')
+ if (p != NULL && parse_scopeid(p + 1, &scopeid)) {
*p = '\0';
- else {
+ } else {
ntmp[0] = '\0';
- scopeid = 0;
}
- } else
- scopeid = 0;
-#endif
+ }
if (inet_pton(AF_INET, hostname, (struct in_addr *)abuf)
== 1) {
@@ -415,7 +441,6 @@ getaddrinfo(const char *hostname, const char *servname,
addroff = offsetof(struct sockaddr_in, sin_addr);
family = AF_INET;
goto common;
-#ifdef IRS_HAVE_SIN6_SCOPE_ID
} else if (ntmp[0] != '\0' &&
inet_pton(AF_INET6, ntmp, abuf) == 1) {
if (family && family != AF_INET6)
@@ -424,7 +449,6 @@ getaddrinfo(const char *hostname, const char *servname,
addroff = offsetof(struct sockaddr_in6, sin6_addr);
family = AF_INET6;
goto common;
-#endif
} else if (inet_pton(AF_INET6, hostname, abuf) == 1) {
if (family != 0 && family != AF_INET6)
return (EAI_NONAME);
@@ -444,12 +468,10 @@ getaddrinfo(const char *hostname, const char *servname,
ai->ai_socktype = socktype;
SIN(ai->ai_addr)->sin_port = port;
memmove((char *)ai->ai_addr + addroff, abuf, addrsize);
+ if (ai->ai_family == AF_INET6) {
+ SIN6(ai->ai_addr)->sin6_scope_id = scopeid;
+ }
if ((flags & AI_CANONNAME) != 0) {
-#ifdef IRS_HAVE_SIN6_SCOPE_ID
- if (ai->ai_family == AF_INET6)
- SIN6(ai->ai_addr)->sin6_scope_id =
- scopeid;
-#endif
if (getnameinfo(ai->ai_addr,
(socklen_t)ai->ai_addrlen,
nbuf, sizeof(nbuf), NULL, 0,