char *get_home_dir(const char *name)
{
hash_struct *current;
unsigned int hash;
hash = get_homedir_hash_value(name);
current = hash_find(passwd_hashtable, name, hash);
if (!current) {
/* not found */
struct passwd *passwdbuf;
passwdbuf = getpwnam(name);
if (!passwdbuf) /* does not exist */
return NULL;
current =
hash_insert(passwd_hashtable, hash, name, passwdbuf->pw_dir);
}
return (current ? current->value : NULL);
}
char *get_home_dir(char *name)
{
struct passwd *passwdbuf;
hash_struct *current, *next;
unsigned int hash;
/* first check hash table -- if username is less than four characters,
just hash to zero (this should be very rare) */
hash = get_homedir_hash_value(name);
for(current = passwd_hashtable[hash];current;current = current->next) {
if (!strcmp(current->key, name))
return current->value;
if (!current->next)
break;
}
passwdbuf = getpwnam(name);
if (!passwdbuf)
return NULL;
next = (hash_struct *) malloc(sizeof (hash_struct));
if (!next) {
WARN("malloc of hash_struct for passwd_hashtable failed!");
return NULL;
}
next->key = strdup(name);
if (!next->key) {
WARN("malloc of passwd_hashtable[hash]->key failed!");
free(next);
return NULL;
}
next->value = strdup(passwdbuf->pw_dir);
if (!next->value) {
WARN("malloc of passwd_hashtable[hash]->value failed!");
free(next->key);
free(next);
return NULL;
}
next->next = NULL;
if (!current) {
passwd_hashtable[hash] = next;
} else {
current->next = next;
}
return next->value;
}