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authorKrishnan Parthasarathi <kparthas@redhat.com>2013-06-27 14:55:59 +0530
committerVijay Bellur <vbellur@redhat.com>2013-07-04 07:29:22 -0700
commit78ee0265db1363b7b1f3943d6a3daa622b7564b8 (patch)
treefa4ac8504fee96e66323f900fb7d114d3eccb238 /libglusterfs
parentb3cc22184452824d436903baa62635acee739c50 (diff)
glusterd/common-utils: move hostname helper functions to common-utils
Change-Id: If47e209cb61ea0eb74ee2d6ef9e9342b2d6ee13a BUG: 980838 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/5261 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'libglusterfs')
-rw-r--r--libglusterfs/src/common-utils.c232
-rw-r--r--libglusterfs/src/common-utils.h2
2 files changed, 234 insertions, 0 deletions
diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index ab3674e..034e3da 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -45,6 +45,7 @@
#include "globals.h"
#include "lkowner.h"
#include "syscall.h"
+#include <ifaddrs.h>
#ifndef AI_ADDRCONFIG
#define AI_ADDRCONFIG 0
@@ -2565,3 +2566,234 @@ gf_get_hostname_from_ip (char *client_ip, char **hostname)
return ret;
}
+
+gf_boolean_t
+gf_interface_search (char *ip)
+{
+ int32_t ret = -1;
+ gf_boolean_t found = _gf_false;
+ struct ifaddrs *ifaddr, *ifa;
+ int family;
+ char host[NI_MAXHOST];
+ xlator_t *this = NULL;
+ char *pct = NULL;
+
+ this = THIS;
+
+ ret = getifaddrs (&ifaddr);
+
+ if (ret != 0) {
+ gf_log (this->name, GF_LOG_ERROR, "getifaddrs() failed: %s\n",
+ gai_strerror(ret));
+ goto out;
+ }
+
+ for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
+ if (!ifa->ifa_addr) {
+ /*
+ * This seemingly happens if an interface hasn't
+ * been bound to a particular protocol (seen with
+ * TUN devices).
+ */
+ continue;
+ }
+ family = ifa->ifa_addr->sa_family;
+
+ if (family != AF_INET && family != AF_INET6)
+ continue;
+
+ ret = getnameinfo (ifa->ifa_addr,
+ (family == AF_INET) ? sizeof(struct sockaddr_in) :
+ sizeof(struct sockaddr_in6),
+ host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+
+ if (ret != 0) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "getnameinfo() failed: %s\n",
+ gai_strerror(ret));
+ goto out;
+ }
+
+ /*
+ * Sometimes the address comes back as addr%eth0 or
+ * similar. Since % is an invalid character, we can
+ * strip it out with confidence that doing so won't
+ * harm anything.
+ */
+ pct = index(host,'%');
+ if (pct) {
+ *pct = '\0';
+ }
+
+ if (strncmp (ip, host, NI_MAXHOST) == 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "%s is local address at interface %s",
+ ip, ifa->ifa_name);
+ found = _gf_true;
+ goto out;
+ }
+ }
+out:
+ if(ifaddr)
+ freeifaddrs (ifaddr);
+ return found;
+}
+
+char *
+get_ip_from_addrinfo (struct addrinfo *addr, char **ip)
+{
+ char buf[64];
+ void *in_addr = NULL;
+ struct sockaddr_in *s4 = NULL;
+ struct sockaddr_in6 *s6 = NULL;
+
+ switch (addr->ai_family)
+ {
+ case AF_INET:
+ s4 = (struct sockaddr_in *)addr->ai_addr;
+ in_addr = &s4->sin_addr;
+ break;
+
+ case AF_INET6:
+ s6 = (struct sockaddr_in6 *)addr->ai_addr;
+ in_addr = &s6->sin6_addr;
+ break;
+
+ default:
+ gf_log ("glusterd", GF_LOG_ERROR, "Invalid family");
+ return NULL;
+ }
+
+ if (!inet_ntop(addr->ai_family, in_addr, buf, sizeof(buf))) {
+ gf_log ("glusterd", GF_LOG_ERROR, "String conversion failed");
+ return NULL;
+ }
+
+ *ip = strdup (buf);
+ return *ip;
+}
+
+gf_boolean_t
+gf_is_loopback_localhost (const struct sockaddr *sa, char *hostname)
+{
+ GF_ASSERT (sa);
+
+ gf_boolean_t is_local = _gf_false;
+ const struct in_addr *addr4 = NULL;
+ const struct in6_addr *addr6 = NULL;
+ uint8_t *ap = NULL;
+ struct in6_addr loopbackaddr6 = IN6ADDR_LOOPBACK_INIT;
+
+ switch (sa->sa_family) {
+ case AF_INET:
+ addr4 = &(((struct sockaddr_in *)sa)->sin_addr);
+ ap = (uint8_t*)&addr4->s_addr;
+ if (ap[0] == 127)
+ is_local = _gf_true;
+ break;
+
+ case AF_INET6:
+ addr6 = &(((struct sockaddr_in6 *)sa)->sin6_addr);
+ if (memcmp (addr6, &loopbackaddr6,
+ sizeof (loopbackaddr6)) == 0)
+ is_local = _gf_true;
+ break;
+
+ default:
+ if (hostname)
+ gf_log ("glusterd", GF_LOG_ERROR,
+ "unknown address family %d for %s",
+ sa->sa_family, hostname);
+ break;
+ }
+
+ return is_local;
+}
+
+gf_boolean_t
+gf_is_local_addr (char *hostname)
+{
+ int32_t ret = -1;
+ struct addrinfo *result = NULL;
+ struct addrinfo *res = NULL;
+ gf_boolean_t found = _gf_false;
+ char *ip = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ ret = getaddrinfo (hostname, NULL, NULL, &result);
+
+ if (ret != 0) {
+ gf_log (this->name, GF_LOG_ERROR, "error in getaddrinfo: %s\n",
+ gai_strerror(ret));
+ goto out;
+ }
+
+ for (res = result; res != NULL; res = res->ai_next) {
+ gf_log (this->name, GF_LOG_DEBUG, "%s ",
+ get_ip_from_addrinfo (res, &ip));
+
+ found = gf_is_loopback_localhost (res->ai_addr, hostname)
+ || gf_interface_search (ip);
+ if (found)
+ goto out;
+ }
+
+out:
+ if (result)
+ freeaddrinfo (result);
+
+ if (!found)
+ gf_log (this->name, GF_LOG_DEBUG, "%s is not local", hostname);
+
+ return found;
+}
+
+gf_boolean_t
+gf_is_same_address (char *name1, char *name2)
+{
+ struct addrinfo *addr1 = NULL;
+ struct addrinfo *addr2 = NULL;
+ struct addrinfo *p = NULL;
+ struct addrinfo *q = NULL;
+ gf_boolean_t ret = _gf_false;
+ int gai_err = 0;
+
+ gai_err = getaddrinfo(name1,NULL,NULL,&addr1);
+ if (gai_err != 0) {
+ gf_log (name1, GF_LOG_WARNING,
+ "error in getaddrinfo: %s\n", gai_strerror(gai_err));
+ goto out;
+ }
+
+ gai_err = getaddrinfo(name2,NULL,NULL,&addr2);
+ if (gai_err != 0) {
+ gf_log (name2, GF_LOG_WARNING,
+ "error in getaddrinfo: %s\n", gai_strerror(gai_err));
+ goto out;
+ }
+
+ for (p = addr1; p; p = p->ai_next) {
+ for (q = addr2; q; q = q->ai_next) {
+ if (p->ai_addrlen != q->ai_addrlen) {
+ continue;
+ }
+ if (memcmp(p->ai_addr,q->ai_addr,p->ai_addrlen)) {
+ continue;
+ }
+ ret = _gf_true;
+ goto out;
+ }
+ }
+
+out:
+ if (addr1) {
+ freeaddrinfo(addr1);
+ }
+ if (addr2) {
+ freeaddrinfo(addr2);
+ }
+ return ret;
+
+}
+
diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index 1fb36d6..b0d9c18 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -582,5 +582,7 @@ char *gf_get_reserved_ports();
int gf_process_reserved_ports (gf_boolean_t ports[]);
gf_boolean_t gf_ports_reserved (char *blocked_port, gf_boolean_t *ports);
int gf_get_hostname_from_ip (char *client_ip, char **hostname);
+gf_boolean_t gf_is_local_addr (char *hostname);
+gf_boolean_t gf_is_same_address (char *host1, char *host2);
#endif /* _COMMON_UTILS_H */