/*
- $Id: cache.c,v 1.6 2010-04-23 11:37:05 franklahm Exp $
Copyright (c) 2008,2009 Frank Lahm <franklahm@gmail.com>
This program is free software; you can redistribute it and/or modify
typedef struct cacheduser {
unsigned long uid; /* for future use */
uuidtype_t type;
- uuidp_t uuid;
+ unsigned char *uuid;
char *name;
time_t creationtime;
struct cacheduser *prev;
struct cacheduser *next;
} cacheduser_t;
-cacheduser_t *namecache[256]; /* indexed by hash of name */
-cacheduser_t *uuidcache[256]; /* indexed by hash of uuid */
+static cacheduser_t *namecache[256]; /* indexed by hash of name */
+static cacheduser_t *uuidcache[256]; /* indexed by hash of uuid */
/********************************************************
* helper function
********************************************************/
-static int dumpcache() {
+void uuidcache_dump(void) {
int i;
int ret = 0;
cacheduser_t *entry;
- char *uuidstring = NULL;
char timestr[200];
struct tm *tmp = NULL;
for ( i=0 ; i<256; i++) {
if ((entry = namecache[i]) != NULL) {
do {
- uuid_bin2string(entry->uuid, &uuidstring);
tmp = localtime(&entry->creationtime);
if (tmp == NULL)
continue;
if (strftime(timestr, 200, "%c", tmp) == 0)
continue;
- LOG(log_debug9, logtype_default, "namecache{%d}: name:%s, uuid:%s, type: %s, cached: %s",
- i, entry->name, uuidstring, uuidtype[entry->type], timestr);
- free(uuidstring);
+ LOG(log_debug, logtype_default,
+ "namecache{%d}: name:%s, uuid:%s, type%s: %s, cached: %s",
+ i,
+ entry->name,
+ uuid_bin2string(entry->uuid),
+ (entry->type & UUID_ENOENT) == UUID_ENOENT ? "[negative]" : "",
+ uuidtype[entry->type & UUIDTYPESTR_MASK],
+ timestr);
} while ((entry = entry->next) != NULL);
}
}
for ( i=0; i<256; i++) {
if ((entry = uuidcache[i]) != NULL) {
do {
- uuid_bin2string(entry->uuid, &uuidstring);
+
tmp = localtime(&entry->creationtime);
if (tmp == NULL)
continue;
if (strftime(timestr, 200, "%c", tmp) == 0)
continue;
- LOG(log_debug9, logtype_default, "uuidcache{%d}: uuid:%s, name:%s, type: %s, cached: %s",
- i, uuidstring, entry->name, uuidtype[entry->type], timestr);
- free(uuidstring);
+ LOG(log_debug, logtype_default,
+ "uuidcache{%d}: uuid:%s, name:%s, type%s: %s, cached: %s",
+ i,
+ uuid_bin2string(entry->uuid),
+ entry->name,
+ (entry->type & UUID_ENOENT) == UUID_ENOENT ? "[negative]" : "",
+ uuidtype[entry->type & UUIDTYPESTR_MASK],
+ timestr);
} while ((entry = entry->next) != NULL);
}
}
-
- return ret;
}
/* hash string it into unsigned char */
int add_cachebyname( const char *inname, const uuidp_t inuuid, const uuidtype_t type, const unsigned long uid _U_) {
int ret = 0;
char *name = NULL;
- uuidp_t uuid;
+ unsigned char *uuid = NULL;
cacheduser_t *cacheduser = NULL;
- cacheduser_t *entry;
unsigned char hash;
-#ifdef DEBUG
- dumpcache();
-#endif
-
/* allocate mem and copy values */
name = malloc(strlen(inname)+1);
if (!name) {
/* get hash */
hash = hashstring((unsigned char *)name);
- /* insert cache entry into cache array */
- if (namecache[hash] == NULL) { /* this queue is empty */
+ /* insert cache entry into cache array at head of queue */
+ if (namecache[hash] == NULL) {
+ /* this queue is empty */
+ namecache[hash] = cacheduser;
+ } else {
+ cacheduser->next = namecache[hash];
+ namecache[hash]->prev = cacheduser;
namecache[hash] = cacheduser;
- } else { /* queue is not empty, search end of queue*/
- entry = namecache[hash];
- while( entry->next != NULL)
- entry = entry->next;
- cacheduser->prev = entry;
- entry->next = cacheduser;
}
cleanup:
free(cacheduser);
}
-#ifdef DEBUG
- dumpcache();
-#endif
-
return ret;
}
-int search_cachebyname( const char *name, uuidtype_t type, uuidp_t uuid) {
+/*!
+ * Search cache by name and uuid type
+ *
+ * @args name (r) name to search
+ * @args type (rw) type (user or group) of name, returns found type here which might
+ * mark it as a negative entry
+ * @args uuid (w) found uuid is returned here
+ * @returns 0 on sucess, entry found
+ * -1 no entry found
+ */
+int search_cachebyname( const char *name, uuidtype_t *type, unsigned char *uuid) {
int ret;
unsigned char hash;
cacheduser_t *entry;
time_t tim;
-#ifdef DEBUG
- dumpcache();
-#endif
-
hash = hashstring((unsigned char *)name);
- if (! namecache[hash])
+ if (namecache[hash] == NULL)
return -1;
entry = namecache[hash];
while (entry) {
ret = strcmp(entry->name, name);
- if (ret == 0 && type == entry->type) {
+ if (ret == 0 && *type == (entry->type & UUIDTYPESTR_MASK)) {
/* found, now check if expired */
tim = time(NULL);
if ((tim - entry->creationtime) > CACHESECONDS) {
- LOG(log_debug, logtype_default, "search_cachebyname: expired: name:\'%s\' in queue {%d}", entry->name, hash);
+ LOG(log_debug, logtype_default, "search_cachebyname: expired: name:\"%s\"", entry->name);
/* remove item */
- if (entry->prev) /* 2nd to last in queue */
+ if (entry->prev) {
+ /* 2nd to last in queue */
entry->prev->next = entry->next;
- else { /* queue head */
+ if (entry->next)
+ /* not the last element */
+ entry->next->prev = entry->prev;
+ } else {
+ /* queue head */
if ((namecache[hash] = entry->next) != NULL)
namecache[hash]->prev = NULL;
}
free(entry->name);
free(entry->uuid);
free(entry);
-#ifdef DEBUG
- dumpcache();
-#endif
return -1;
} else {
memcpy(uuid, entry->uuid, UUID_BINSIZE);
-#ifdef DEBUG
- dumpcache();
-#endif
+ *type = entry->type;
return 0;
}
}
entry = entry->next;
}
-#ifdef DEBUG
- dumpcache();
-#endif
+
return -1;
}
+/*
+ * Caller must free allocated name
+ */
int search_cachebyuuid( uuidp_t uuidp, char **name, uuidtype_t *type) {
int ret;
unsigned char hash;
cacheduser_t *entry;
time_t tim;
-#ifdef DEBUG
- dumpcache();
-#endif
-
hash = hashuuid(uuidp);
if (! uuidcache[hash])
tim = time(NULL);
if ((tim - entry->creationtime) > CACHESECONDS) {
LOG(log_debug, logtype_default, "search_cachebyuuid: expired: name:\'%s\' in queue {%d}", entry->name, hash);
- if (entry->prev) /* 2nd to last in queue */
+ if (entry->prev) {
+ /* 2nd to last in queue */
entry->prev->next = entry->next;
- else { /* queue head */
+ if (entry->next)
+ /* not the last element */
+ entry->next->prev = entry->prev;
+ } else {
+ /* queue head */
if ((uuidcache[hash] = entry->next) != NULL)
uuidcache[hash]->prev = NULL;
}
free(entry->name);
free(entry->uuid);
free(entry);
-#ifdef DEBUG
- dumpcache();
-#endif
return -1;
} else {
*name = malloc(strlen(entry->name)+1);
strcpy(*name, entry->name);
*type = entry->type;
-#ifdef DEBUG
- dumpcache();
-#endif
return 0;
}
}
entry = entry->next;
}
-#ifdef DEBUG
- dumpcache();
-#endif
-
return -1;
}
int add_cachebyuuid( uuidp_t inuuid, const char *inname, uuidtype_t type, const unsigned long uid _U_) {
int ret = 0;
char *name = NULL;
- uuidp_t uuid;
+ unsigned char *uuid = NULL;
cacheduser_t *cacheduser = NULL;
cacheduser_t *entry;
unsigned char hash;
-#ifdef DEBUG
- dumpcache();
-#endif
-
/* allocate mem and copy values */
name = malloc(strlen(inname)+1);
if (!name) {
/* get hash */
hash = hashuuid(uuid);
- /* insert cache entry into cache array */
- if (uuidcache[hash] == NULL) { /* this queue is empty */
+ /* insert cache entry into cache array at head of queue */
+ if (uuidcache[hash] == NULL) {
+ /* this queue is empty */
+ uuidcache[hash] = cacheduser;
+ } else {
+ cacheduser->next = uuidcache[hash];
+ uuidcache[hash]->prev = cacheduser;
uuidcache[hash] = cacheduser;
- } else { /* queue is not empty, search end of queue*/
- entry = uuidcache[hash];
- while( entry->next != NULL)
- entry = entry->next;
- cacheduser->prev = entry;
- entry->next = cacheduser;
}
cleanup:
free(cacheduser);
}
-#ifdef DEBUG
- dumpcache();
-#endif
-
return ret;
}
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