Reorganize util.c as it should contain only common utilities.

Libkvstorage client is now deprecated as I plan to replace it with hiredis library.

2 files changed, 107 insertions, 59 deletions

diff --git a/lib/kvstorage/libkvstorageclient.c b/lib/kvstorage/libkvstorageclient.c
index 4d3b17dd3..d05e8b5e0 100644
--- a/lib/kvstorage/libkvstorageclient.c
+++ b/lib/kvstorage/libkvstorageclient.c
@@ -23,11 +23,22 @@
 
 
 #include "config.h"
-#include "main.h"
+#include "mem_pool.h"
+#include "util.h"
 #include "libkvstorageclient.h"
 
 #define MAX_KV_LINE 1024
 
+#ifdef CRLF
+#undef CRLF
+#undef CR
+#undef LF
+#endif
+
+#define CRLF "\r\n"
+#define CR '\r'
+#define LF '\n'
+
 struct kvstorage_buf {
 	guint pos;
 	guint len;
@@ -242,12 +253,13 @@ rspamd_kvstorage_parse_reply_error (struct kvstorage_buf *buf)
 static enum rspamd_kvstorage_error
 rspamd_kvstorage_parse_get_line (struct kvstorage_buf *buf, guint *len, guint *flags)
 {
-	guint8								   *p, *c;
+	guint8								   *p, *c, *end;
 	gboolean                                error = TRUE;
 	gchar                                  *err_str;
 
 	p = buf->data;
-	while (p - buf->data < buf->pos) {
+	end = buf->data + buf->pos;
+	while (p < end) {
 		if (g_ascii_isspace (*p)) {
 			error = FALSE;
 			while (p - buf->data < buf->pos && g_ascii_isspace (*p)) {
@@ -268,10 +280,11 @@ rspamd_kvstorage_parse_get_line (struct kvstorage_buf *buf, guint *len, guint *f
 	/* Here we got key, flags and size items */
 	/* Skip key */
 	error = TRUE;
-	while (p - buf->data < buf->pos) {
+	while (p < end) {
 		if (g_ascii_isspace (*p)) {
 			error = FALSE;
-			while (p - buf->data < buf->pos && g_ascii_isspace (*p)) {
+			/* Skip spaces after key */
+			while (p < end && g_ascii_isspace (*p)) {
 				p ++;
 			}
 			break;
@@ -285,9 +298,10 @@ rspamd_kvstorage_parse_get_line (struct kvstorage_buf *buf, guint *len, guint *f
 	/* Read flags */
 	c = p;
 	error = TRUE;
-	while (p - buf->data < buf->pos) {
+	while (p < end) {
 		if (g_ascii_isspace (*p)) {
 			error = FALSE;
+			/* Skip spaces after flags */
 			while (p - buf->data < buf->pos && g_ascii_isspace (*p)) {
 				p ++;
 			}
@@ -308,16 +322,8 @@ rspamd_kvstorage_parse_get_line (struct kvstorage_buf *buf, guint *len, guint *f
 	}
 	/* Read len */
 	c = p;
-	error = TRUE;
-	while (p - buf->data < buf->pos) {
-		if (g_ascii_isspace (*p)) {
-			error = FALSE;
-			while (p - buf->data < buf->pos && g_ascii_isspace (*p)) {
-				p ++;
-			}
-			break;
-		}
-		else if (!g_ascii_isdigit (*p)) {
+	while (p < end) {
+		if (!g_ascii_isdigit (*p)) {
 			break;
 		}
 		p ++;
@@ -347,9 +353,9 @@ rspamd_kvstorage_connect_cb (int fd, short what, gpointer ud)
 		cb (KVSTORAGE_ERROR_TIMEOUT, d->c, d->ud);
 	}
 	else {
+		d->c->state = KV_STATE_CONNECTED;
 		cb (KVSTORAGE_ERROR_OK, d->c, d->ud);
 	}
-	d->c->state = KV_STATE_CONNECTED;
 }
 
 static void
@@ -364,7 +370,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 	cb = (kvstorage_read_cb)d->c->read_cb;
 
 	if (what == EV_TIMEOUT) {
-		cb (KVSTORAGE_ERROR_TIMEOUT, d->key, NULL, 0, d->c, d->ud);
+		cb (KVSTORAGE_ERROR_TIMEOUT, d->key, d->keylen, NULL, 0, d->c, d->ud);
 		return;
 	}
 	if (d->c->state == KV_STATE_GET) {
@@ -391,6 +397,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		}
 		else if (r == 0) {
 			/* We have written everything */
+			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			d->c->state = KV_STATE_READ_ELT;
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_read_cb, d);
@@ -403,7 +410,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during writing */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, NULL, 0, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, NULL, 0, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_WRITE_DATA) {
@@ -424,6 +431,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		else if (r == 0) {
 			/* We have written everything */
 			d->c->state = KV_STATE_READ_ELT;
+			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_read_cb, d);
 			if (d->c->tv.tv_sec != 0 || d->c->tv.tv_usec != 0) {
@@ -435,7 +443,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during writing */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, NULL, 0, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, NULL, 0, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_READ_ELT) {
@@ -455,10 +463,11 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		else if (r == 0) {
 			/* Got all data about elt */
 			if ((r = rspamd_kvstorage_parse_get_line (d->buf, &d->datalen, &flags)) != KVSTORAGE_ERROR_OK) {
-				cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, NULL, 0, d->c, d->ud);
+				cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, NULL, 0, d->c, d->ud);
 				return;
 			}
 			rspamd_kvstorage_buf_drainline (d->buf);
+
 			/* Now allocate and read the data */
 			databuf = rspamd_kvstorage_buf_create (d->datalen, d->c->pool);
 			memcpy (databuf->data, d->buf->data, d->buf->pos);
@@ -475,7 +484,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during reading reply line */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, NULL, 0, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, NULL, 0, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_READ_DATA) {
@@ -486,7 +495,6 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 			d->c->state = KV_STATE_READ_REPLY;
 			/* Save databuf */
 			d->data = d->buf->data;
-			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_read_cb, d);
 			if (d->c->tv.tv_sec != 0 || d->c->tv.tv_usec != 0) {
@@ -509,7 +517,7 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, NULL, 0, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, NULL, 0, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_READ_REPLY) {
@@ -527,11 +535,12 @@ rspamd_kvstorage_read_cb (int fd, short what, gpointer ud)
 			}
 		}
 		else if (r == 0) {
-			cb (rspamd_kvstorage_parse_reply_error (d->buf), d->key, d->data, d->datalen, d->c, d->ud);
+			d->c->state = KV_STATE_CONNECTED;
+			cb (rspamd_kvstorage_parse_reply_error (d->buf), d->key, d->keylen, d->data, d->datalen, d->c, d->ud);
 		}
 		else {
 			/* Error occured during reading reply line */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, NULL, 0, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, NULL, 0, d->c, d->ud);
 		}
 	}
 }
@@ -547,7 +556,7 @@ rspamd_kvstorage_write_cb (int fd, short what, gpointer ud)
 	cb = (kvstorage_write_cb)d->c->write_cb;
 
 	if (what == EV_TIMEOUT) {
-		cb (KVSTORAGE_ERROR_TIMEOUT, d->key, d->c, d->ud);
+		cb (KVSTORAGE_ERROR_TIMEOUT, d->key, d->keylen, d->c, d->ud);
 		return;
 	}
 	if (d->c->state == KV_STATE_SET) {
@@ -574,6 +583,7 @@ rspamd_kvstorage_write_cb (int fd, short what, gpointer ud)
 		}
 		else if (r == 0) {
 			/* We have written everything */
+			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			d->c->state = KV_STATE_READ_REPLY;
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_write_cb, d);
@@ -586,7 +596,7 @@ rspamd_kvstorage_write_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during writing */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_WRITE_DATA) {
@@ -607,6 +617,7 @@ rspamd_kvstorage_write_cb (int fd, short what, gpointer ud)
 		else if (r == 0) {
 			/* We have written everything */
 			d->c->state = KV_STATE_READ_REPLY;
+			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_write_cb, d);
 			if (d->c->tv.tv_sec != 0 || d->c->tv.tv_usec != 0) {
@@ -618,7 +629,7 @@ rspamd_kvstorage_write_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during writing */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_READ_REPLY) {
@@ -636,11 +647,12 @@ rspamd_kvstorage_write_cb (int fd, short what, gpointer ud)
 			}
 		}
 		else if (r == 0) {
-			cb (rspamd_kvstorage_parse_reply_error (d->buf), d->key, d->c, d->ud);
+			d->c->state = KV_STATE_CONNECTED;
+			cb (rspamd_kvstorage_parse_reply_error (d->buf), d->key, d->keylen, d->c, d->ud);
 		}
 		else {
 			/* Error occured during reading reply line */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, d->c, d->ud);
 		}
 	}
 }
@@ -656,7 +668,7 @@ rspamd_kvstorage_delete_cb (int fd, short what, gpointer ud)
 	cb = (kvstorage_write_cb)d->c->write_cb;
 
 	if (what == EV_TIMEOUT) {
-		cb (KVSTORAGE_ERROR_TIMEOUT, d->key, d->c, d->ud);
+		cb (KVSTORAGE_ERROR_TIMEOUT, d->key, d->keylen, d->c, d->ud);
 		return;
 	}
 	if (d->c->state == KV_STATE_SET) {
@@ -683,6 +695,7 @@ rspamd_kvstorage_delete_cb (int fd, short what, gpointer ud)
 		}
 		else if (r == 0) {
 			/* We have written everything */
+			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			d->c->state = KV_STATE_READ_REPLY;
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_delete_cb, d);
@@ -695,7 +708,7 @@ rspamd_kvstorage_delete_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during writing */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_WRITE_DATA) {
@@ -716,6 +729,7 @@ rspamd_kvstorage_delete_cb (int fd, short what, gpointer ud)
 		else if (r == 0) {
 			/* We have written everything */
 			d->c->state = KV_STATE_READ_REPLY;
+			d->buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, d->c->pool);
 			event_del (&d->c->ev);
 			event_set (&d->c->ev, d->c->sock, EV_READ, rspamd_kvstorage_delete_cb, d);
 			if (d->c->tv.tv_sec != 0 || d->c->tv.tv_usec != 0) {
@@ -727,7 +741,7 @@ rspamd_kvstorage_delete_cb (int fd, short what, gpointer ud)
 		}
 		else {
 			/* Error occured during writing */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, d->c, d->ud);
 		}
 	}
 	else if (d->c->state == KV_STATE_READ_REPLY) {
@@ -745,11 +759,12 @@ rspamd_kvstorage_delete_cb (int fd, short what, gpointer ud)
 			}
 		}
 		else if (r == 0) {
-			cb (rspamd_kvstorage_parse_reply_error (d->buf), d->key, d->c, d->ud);
+			d->c->state = KV_STATE_CONNECTED;
+			cb (rspamd_kvstorage_parse_reply_error (d->buf), d->key, d->keylen, d->c, d->ud);
 		}
 		else {
 			/* Error occured during reading reply line */
-			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->c, d->ud);
+			cb (KVSTORAGE_ERROR_INTERNAL_ERROR, d->key, d->keylen, d->c, d->ud);
 		}
 	}
 }
@@ -773,7 +788,7 @@ rspamd_kvstorage_connect_async (const gchar *host,
 	gint									 sock;
 
 	/* Here we do NOT try to resolve hostname */
-	if ((sock = make_universal_stream_socket (host, port, TRUE, FALSE, FALSE)) == -1) {
+	if ((sock = make_universal_stream_socket (host, port, TRUE, FALSE, TRUE)) == -1) {
 		return KVSTORAGE_ERROR_SERVER_ERROR;
 	}
 
@@ -819,7 +834,7 @@ rspamd_kvstorage_connect_async (const gchar *host,
  */
 enum rspamd_kvstorage_error
 rspamd_kvstorage_get_async (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, kvstorage_read_cb cb, gpointer ud)
+		const gpointer key, guint keylen, kvstorage_read_cb cb, gpointer ud)
 {
 	struct rspamd_kvstorage_async_data		*d;
 
@@ -833,7 +848,7 @@ rspamd_kvstorage_get_async (struct rspamd_kvstorage_connection *conn,
 		d->c = conn;
 		d->ud = ud;
 		d->key = memory_pool_strdup (conn->pool, key);
-		d->keylen = strlen (d->key);
+		d->keylen = keylen;
 		conn->state = KV_STATE_GET;
 
 		/* Set event */
@@ -858,7 +873,8 @@ rspamd_kvstorage_get_async (struct rspamd_kvstorage_connection *conn,
  */
 enum rspamd_kvstorage_error
 rspamd_kvstorage_set_async (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, const gpointer value, gsize len, guint expire, kvstorage_write_cb cb, gpointer ud)
+		const gpointer key, guint keylen, const gpointer value, gsize len, guint expire, kvstorage_write_cb cb,
+		gpointer ud)
 {
 	struct rspamd_kvstorage_async_data		*d;
 
@@ -872,7 +888,7 @@ rspamd_kvstorage_set_async (struct rspamd_kvstorage_connection *conn,
 		d->c = conn;
 		d->ud = ud;
 		d->key = memory_pool_strdup (conn->pool, key);
-		d->keylen = strlen (d->key);
+		d->keylen = keylen;
 		d->data = value;
 		d->datalen = len;
 		conn->state = KV_STATE_SET;
@@ -898,7 +914,7 @@ rspamd_kvstorage_set_async (struct rspamd_kvstorage_connection *conn,
  */
 enum rspamd_kvstorage_error
 rspamd_kvstorage_delete_async (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, kvstorage_write_cb cb, gpointer ud)
+		const gpointer key, guint keylen, kvstorage_write_cb cb, gpointer ud)
 {
 	struct rspamd_kvstorage_async_data		*d;
 
@@ -912,7 +928,7 @@ rspamd_kvstorage_delete_async (struct rspamd_kvstorage_connection *conn,
 		d->c = conn;
 		d->ud = ud;
 		d->key = memory_pool_strdup (conn->pool, key);
-		d->keylen = strlen (d->key);
+		d->keylen = keylen;
 		conn->state = KV_STATE_SET;
 
 		/* Set event */
@@ -989,7 +1005,7 @@ rspamd_kvstorage_connect_sync (const gchar *host,
  */
 enum rspamd_kvstorage_error
 rspamd_kvstorage_get_sync (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, gpointer **value, guint *len)
+		const gpointer key, guint keylen, gpointer **value, guint *len)
 {
 	struct kvstorage_buf 				   *buf, *databuf;
 	gint                                    r;
@@ -1001,7 +1017,7 @@ rspamd_kvstorage_get_sync (struct rspamd_kvstorage_connection *conn,
 
 	buf = rspamd_kvstorage_buf_create (MAX_KV_LINE, conn->pool);
 
-	r = rspamd_snprintf (buf->data, buf->len, "get %s" CRLF, key);
+	r = rspamd_snprintf (buf->data, buf->len, "get %*s" CRLF, keylen, key);
 	buf->len = r;
 	while ((r = rspamd_kvstorage_buf_writeall (buf, conn)) > 0) {
 		poll_sync_socket (conn->sock, tv_to_msec (&conn->tv), POLL_OUT);
@@ -1051,17 +1067,16 @@ rspamd_kvstorage_get_sync (struct rspamd_kvstorage_connection *conn,
  */
 enum rspamd_kvstorage_error
 rspamd_kvstorage_set_sync (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, const gpointer value, gsize len, guint expire)
+		const gpointer key, guint keylen, const gpointer value, gsize len, guint expire)
 {
 	struct kvstorage_buf 				   *buf;
-	gint                                    r, keylen, buflen;
+	gint                                    r, buflen;
 
 	if (conn == NULL || conn->state != KV_STATE_CONNECTED) {
 		return KVSTORAGE_ERROR_INTERNAL_ERROR;
 	}
 
 	/* Create buf */
-	keylen = strlen (key);
 	buflen = len + keylen + sizeof ("set  4294967296 4294967296 4294967296" CRLF);
 	buf = rspamd_kvstorage_buf_create (buflen, conn->pool);
 
@@ -1091,17 +1106,16 @@ rspamd_kvstorage_set_sync (struct rspamd_kvstorage_connection *conn,
  */
 enum rspamd_kvstorage_error
 rspamd_kvstorage_delete_sync (struct rspamd_kvstorage_connection *conn,
-		const gpointer key)
+		const gpointer key, guint keylen)
 {
 	struct kvstorage_buf 				   *buf;
-	gint                                    r, keylen, buflen;
+	gint                                    r, buflen;
 
 	if (conn == NULL || conn->state != KV_STATE_CONNECTED) {
 		return KVSTORAGE_ERROR_INTERNAL_ERROR;
 	}
 
 	/* Create buf */
-	keylen = strlen (key);
 	buflen = MAX (keylen + sizeof ("delete " CRLF), MAX_KV_LINE);
 	buf = rspamd_kvstorage_buf_create (buflen, conn->pool);
 
@@ -1137,3 +1151,29 @@ rspamd_kvstorage_close_sync (struct rspamd_kvstorage_connection *conn)
 
 	return KVSTORAGE_ERROR_OK;
 }
+
+const gchar*
+rspamd_kvstorage_strerror (enum rspamd_kvstorage_error err)
+{
+	switch (err) {
+	case KVSTORAGE_ERROR_OK:
+		return "operation completed";
+	case KVSTORAGE_ERROR_TIMEOUT:
+		return "operation timeout";
+	case KVSTORAGE_ERROR_NOT_FOUND:
+		return "key not found";
+	case KVSTORAGE_ERROR_NOT_STORED:
+		return "key not stored";
+	case KVSTORAGE_ERROR_EXISTS:
+		return "key exists";
+	case KVSTORAGE_ERROR_SERVER_ERROR:
+		return "server error";
+	case KVSTORAGE_ERROR_CLIENT_ERROR:
+		return "client error";
+	case KVSTORAGE_ERROR_INTERNAL_ERROR:
+		return "library error";
+	}
+
+	/* Not reached */
+	return "unknown error";
+}
diff --git a/lib/kvstorage/libkvstorageclient.h b/lib/kvstorage/libkvstorageclient.h
index 262c5e89e..11145fd49 100644
--- a/lib/kvstorage/libkvstorageclient.h
+++ b/lib/kvstorage/libkvstorageclient.h
@@ -26,6 +26,7 @@
 #define LIBKVSTORAGECLIENT_H_
 
 #include <glib.h>
+#include <sys/time.h>
 
 /* Errors */
 enum rspamd_kvstorage_error {
@@ -45,10 +46,11 @@ struct rspamd_kvstorage_connection;
 /* Callbacks for async API */
 typedef void (*kvstorage_connect_cb) (enum rspamd_kvstorage_error code,
 									struct rspamd_kvstorage_connection *conn, gpointer user_data);
-typedef void (*kvstorage_read_cb) (enum rspamd_kvstorage_error code, const gpointer key,
+typedef void (*kvstorage_read_cb) (enum rspamd_kvstorage_error code, const gpointer key, guint keylen,
 									const gpointer value, gsize datalen, struct rspamd_kvstorage_connection *conn,
 									gpointer user_data);
-typedef void (*kvstorage_write_cb) (enum rspamd_kvstorage_error code, const gpointer key, struct rspamd_kvstorage_connection *conn,
+typedef void (*kvstorage_write_cb) (enum rspamd_kvstorage_error code, const gpointer key, guint keylen,
+									struct rspamd_kvstorage_connection *conn,
 									gpointer user_data);
 
 /* Asynced API */
@@ -74,7 +76,7 @@ enum rspamd_kvstorage_error rspamd_kvstorage_connect_async (const gchar *host,
  * @param ud user data for callback
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_get_async (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, kvstorage_read_cb cb, gpointer ud);
+		const gpointer key, guint keylen, kvstorage_read_cb cb, gpointer ud);
 
 /**
  * Write key asynced
@@ -85,7 +87,7 @@ enum rspamd_kvstorage_error rspamd_kvstorage_get_async (struct rspamd_kvstorage_
  * @param ud user data for callback
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_set_async (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, const gpointer value, gsize len, guint expire, kvstorage_write_cb cb, gpointer ud);
+		const gpointer key, guint keylen, const gpointer value, gsize len, guint expire, kvstorage_write_cb cb, gpointer ud);
 
 /**
  * Delete key asynced
@@ -95,7 +97,7 @@ enum rspamd_kvstorage_error rspamd_kvstorage_set_async (struct rspamd_kvstorage_
  * @param ud user data for callback
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_delete_async (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, kvstorage_write_cb cb, gpointer ud);
+		const gpointer key, guint keylen, kvstorage_write_cb cb, gpointer ud);
 
 /**
  * Close connection
@@ -122,7 +124,7 @@ enum rspamd_kvstorage_error rspamd_kvstorage_connect_sync (const gchar *host,
  * @param value value readed
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_get_sync (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, gpointer **value, guint *len);
+		const gpointer key, guint keylen, gpointer **value, guint *len);
 
 /**
  * Write key synced
@@ -131,7 +133,7 @@ enum rspamd_kvstorage_error rspamd_kvstorage_get_sync (struct rspamd_kvstorage_c
  * @param value data to write
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_set_sync (struct rspamd_kvstorage_connection *conn,
-		const gpointer key, const gpointer value, gsize len, guint expire);
+		const gpointer key, guint keylen, const gpointer value, gsize len, guint expire);
 
 /**
  * Delete key synced
@@ -139,7 +141,7 @@ enum rspamd_kvstorage_error rspamd_kvstorage_set_sync (struct rspamd_kvstorage_c
  * @param key key to delete
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_delete_sync (struct rspamd_kvstorage_connection *conn,
-		const gpointer key);
+		const gpointer key, guint keylen);
 
 /**
  * Close connection
@@ -147,4 +149,10 @@ enum rspamd_kvstorage_error rspamd_kvstorage_delete_sync (struct rspamd_kvstorag
  */
 enum rspamd_kvstorage_error rspamd_kvstorage_close_sync (struct rspamd_kvstorage_connection *conn);
 
+/**
+ * Convert error code to string
+ * @param err error code to be converted
+ */
+const gchar* rspamd_kvstorage_strerror (enum rspamd_kvstorage_error err);
+
 #endif /* LIBKVSTORAGECLIENT_H_ */