pjsip cli: Change Identify to show CIDR notation instead of netmasks.

* Added ast_sockaddr_cidr_bits() to count the 1 bits in an ast_sockaddr.
* Added ast_ha_join_cidr() which uses ast_sockaddr_cidr_bits() for the netmask
  instead of ast_sockaddr_stringify_addr.
* Changed res_pjsip_endpoint_identifier_ip to call ast_ha_join_cidr() instead
  of ast_ha_join() for the CLI output.

This is a CLI change only.  AMI was not affected.

Tested by: George Joseph
Review: https://reviewboard.asterisk.org/r/3652/
........

Merged revisions 416737 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@416738 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/acl.h

@@ -141,6 +141,13 @@ struct ast_ha *ast_append_ha(const char *sense, const char *stuff, struct ast_ha
  */
 void ast_ha_join(const struct ast_ha *ha, struct ast_str **buf);
 
+/*!
+ * \brief Convert HAs to a comma separated string value using CIDR notation
+ * \param ha the starting ha head
+ * \param buf string buffer to convert data to
+ */
+void ast_ha_join_cidr(const struct ast_ha *ha, struct ast_str **buf);
+
 /*!
  * \brief Add a rule to an ACL struct
  *

include/asterisk/netsock2.h

@@ -262,6 +262,16 @@ static inline char *ast_sockaddr_stringify_addr(const struct ast_sockaddr *addr)
 	return ast_sockaddr_stringify_fmt(addr, AST_SOCKADDR_STR_ADDR);
 }
 
+/*!
+ * \since 12.4
+ *
+ * \brief
+ * Count the 1 bits in a netmask
+ *
+ * \return number of 1 bits
+ */
+int ast_sockaddr_cidr_bits(const struct ast_sockaddr *sa);
+
 /*!
  * \since 1.8
  *