name_alias.h
e278821b
 /*
  * $Id$
  *
  */
 
 
 #include "str.h"
 #include "dprint.h"
 
 
 
 struct host_alias{
 	str alias;
 	struct host_alias* next;
 };
 
 
 extern struct host_alias* aliases;
 
 
 
 /* returns 1 if  name is in the alias list*/
 static inline int grep_aliases(char* name, int len)
 {
 	struct  host_alias* a;
 	
 	for(a=aliases;a;a=a->next)
 		if ((a->alias.len==len) && (strncasecmp(a->alias.s, name, len)==0))
 			return 1;
 	return 0;
 }
 
 
 
 /* adds an alias to the list (only if it isn't already there)
  * returns 1 if a new alias was added, 0 if the alias was already on the list
  * and  -1 on error */
 static inline int add_alias(char* name, int len)
 {
 	struct host_alias* a;
 	
 	if (grep_aliases(name,len)) return 0;
 	a=0;
 	a=(struct host_alias*)malloc(sizeof(struct host_alias));
 	if(a==0) goto error;
 	a->alias.s=(char*)malloc(len+1);
 	if (a->alias.s==0) goto error;
 	a->alias.len=len;
 	memcpy(a->alias.s, name, len);
 	a->alias.s[len]=0; /* null terminate for easier printing*/
 	a->next=aliases;
 	aliases=a;
 	return 1;
 error:
 	LOG(L_ERR, "ERROR: add_alias: memory allocation error\n");
 	if (a) free(a);
 	return -1;
 }