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-rw-r--r--libglusterfs/src/common-utils.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 6f40e7a6420..727983d0682 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -1572,3 +1572,124 @@ strtail (char *str, const char *pattern)
return NULL;
}
+
+/* RFC 1123 & 952 */
+char
+valid_host_name (char *address, int length)
+{
+ int i = 0;
+ char ret = 1;
+
+ if ((length > 75) || (length == 1)) {
+ ret = 0;
+ goto out;
+ }
+
+ if (!isalnum (address[length - 1])) {
+ ret = 0;
+ goto out;
+ }
+
+ for (i = 0; i < length; i++) {
+ if (!isalnum (address[i]) && (address[i] != '.')
+ && (address[i] != '-')) {
+ ret = 0;
+ goto out;
+ }
+ }
+
+out:
+ return ret;
+}
+
+char
+valid_ipv4_address (char *address, int length)
+{
+ int octets = 0;
+ int value = 0;
+ char *tmp = NULL, *ptr = NULL, *prev = NULL, *endptr = NULL;
+ char ret = 1;
+
+ tmp = gf_strdup (address);
+ prev = tmp;
+ prev = strtok_r (tmp, ".", &ptr);
+
+ while (prev != NULL)
+ {
+ octets++;
+ value = strtol (prev, &endptr, 10);
+ if ((value > 255) || (value < 0) || (endptr != NULL)) {
+ ret = 0;
+ goto out;
+ }
+
+ prev = strtok_r (NULL, ".", &ptr);
+ }
+
+ if (octets != 4) {
+ ret = 0;
+ }
+
+out:
+ GF_FREE (tmp);
+ return ret;
+}
+
+char
+valid_ipv6_address (char *address, int length)
+{
+ int hex_numbers = 0;
+ int value = 0;
+ char *tmp = NULL, *ptr = NULL, *prev = NULL, *endptr = NULL;
+ char ret = 1;
+
+ tmp = gf_strdup (address);
+ prev = strtok_r (tmp, ":", &ptr);
+
+ while (prev != NULL)
+ {
+ hex_numbers++;
+ value = strtol (prev, &endptr, 16);
+ if ((value > 0xffff) || (value < 0)
+ || (endptr != NULL && *endptr != '\0')) {
+ ret = 0;
+ goto out;
+ }
+
+ prev = strtok_r (NULL, ":", &ptr);
+ }
+
+ if (hex_numbers > 8) {
+ ret = 0;
+ }
+
+out:
+ GF_FREE (tmp);
+ return ret;
+}
+
+char
+valid_internet_address (char *address)
+{
+ char ret = 0;
+ int length = 0;
+
+ if (address == NULL) {
+ goto out;
+ }
+
+ length = strlen (address);
+ if (length == 0) {
+ goto out;
+ }
+
+ if (valid_ipv4_address (address, length)
+ || valid_ipv6_address (address, length)
+ || valid_host_name (address, length)) {
+ ret = 1;
+ }
+
+out:
+ return ret;
+}
+