index b27b3dd28bfbfd0324941d1861bc2bdd5d60a8ca..ebc3b99332d92d0e929f51467edbc549f0088630 100644 (file)
#include "utils/error.h"
#include "utils/strbuf.h"
#include "utils/proto.h"
+#include "utils/os.h"
#include <assert.h>
#include <errno.h>
#include <arpa/inet.h>
#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-
#include <sys/socket.h>
-#include <sys/types.h>
-#include <sys/param.h>
+#include <sys/un.h>
-#ifdef HAVE_UCRED_H
-# include <ucred.h>
-#endif
-#ifdef HAVE_SYS_UCRED_H
-# include <sys/ucred.h>
-#endif
-
-#include <pwd.h>
+#include <stdlib.h>
+#include <string.h>
#include <pthread.h>
+#include <netdb.h>
/*
* private variables
#define CONN_FD_PREFIX "conn#"
#define CONN_FD_PLACEHOLDER "XXXXXXX"
-/* XXX: only supports UNIX sockets so far */
-static char *
-peer(int sockfd)
+static ssize_t
+conn_read(sdb_conn_t *conn, size_t len)
{
- uid_t uid;
+ return sdb_strbuf_read(conn->buf, conn->fd, len);
+} /* conn_read */
- struct passwd pw_entry;
- struct passwd *result = NULL;
- char buf[1024];
-
-#ifdef SO_PEERCRED
- struct ucred cred;
- socklen_t len = sizeof(cred);
-
- if (getsockopt(sockfd, SOL_SOCKET, SO_PEERCRED, &cred, &len)
- || (len != sizeof(cred)))
- return NULL;
- uid = cred.uid;
-#else /* SO_PEERCRED */
- errno = ENOSYS;
- return NULL;
-#endif
-
- memset(&pw_entry, 0, sizeof(pw_entry));
- if (getpwuid_r(uid, &pw_entry, buf, sizeof(buf), &result)
- || (! result))
- return NULL;
- return strdup(result->pw_name);
-} /* peer */
+static ssize_t
+conn_write(sdb_conn_t *conn, const void *buf, size_t len)
+{
+ return sdb_write(conn->fd, len, buf);
+} /* conn_write */
static int
connection_init(sdb_object_t *obj, va_list ap)
return -1;
}
- if (conn->client_addr.ss_family != AF_UNIX) {
- sdb_log(SDB_LOG_ERR, "frontend: Accepted connection using "
- "unexpected family type %d", conn->client_addr.ss_family);
- return -1;
- }
+ /* update the object name */
+ snprintf(obj->name + strlen(CONN_FD_PREFIX),
+ strlen(CONN_FD_PLACEHOLDER), "%i", conn->fd);
+
+ /* defaults */
+ conn->read = conn_read;
+ conn->write = conn_write;
+ conn->finish = NULL;
+ conn->ssl_session = NULL;
sock_fl = fcntl(conn->fd, F_GETFL);
if (fcntl(conn->fd, F_SETFL, sock_fl | O_NONBLOCK)) {
return -1;
}
- conn->username = peer(conn->fd);
- if (! conn->username) {
- char buf[1024];
- sdb_log(SDB_LOG_ERR, "frontend: Failed to retrieve peer for "
- "connection conn#%i: %s", conn->fd,
- sdb_strerror(errno, buf, sizeof(buf)));
- return -1;
- }
+ conn->username = NULL;
conn->ready = 0;
sdb_log(SDB_LOG_DEBUG, "frontend: Accepted connection on fd=%i",
conn->cmd = SDB_CONNECTION_IDLE;
conn->cmd_len = 0;
conn->skip_len = 0;
-
- /* update the object name */
- snprintf(obj->name + strlen(CONN_FD_PREFIX),
- strlen(CONN_FD_PLACEHOLDER), "%i", conn->fd);
return 0;
} /* connection_init */
conn->ready = 0;
+ if (conn->finish)
+ conn->finish(conn);
+ conn->finish = NULL;
+
if (conn->buf) {
len = sdb_strbuf_len(conn->buf);
if (len)
"(%zu byte%s left in buffer)", len, len == 1 ? "" : "s");
}
- sdb_log(SDB_LOG_DEBUG, "frontend: Closing connection %s", obj->name);
- if (conn->fd >= 0)
- close(conn->fd);
- conn->fd = -1;
+ if (conn->client_addr.ss_family == AF_UNIX) {
+ sdb_log(SDB_LOG_DEBUG, "frontend: Closing connection %s from peer %s",
+ obj->name, conn->username);
+ }
+ else {
+ char host[1024] = "<unknown>", port[32] = "";
+ getnameinfo((struct sockaddr *)&conn->client_addr,
+ conn->client_addr_len, host, sizeof(host), port, sizeof(port),
+ NI_NUMERICHOST | NI_NUMERICSERV);
+ sdb_log(SDB_LOG_DEBUG, "frontend: Closing connection %s from peer %s "
+ "at %s:%s", obj->name, conn->username, host, port);
+ }
+ sdb_connection_close(conn);
if (conn->username)
free(conn->username);
assert(conn && (conn->cmd != SDB_CONNECTION_IDLE));
assert(! conn->skip_len);
- sdb_log(SDB_LOG_DEBUG, "frontend: Handling command %u (len: %u)",
- conn->cmd, conn->cmd_len);
-
if (conn->cmd == SDB_CONNECTION_PING)
status = sdb_connection_ping(conn);
else if (conn->cmd == SDB_CONNECTION_STARTUP)
status = sdb_fe_session_start(conn);
+
else if (conn->cmd == SDB_CONNECTION_QUERY)
status = sdb_fe_query(conn);
else if (conn->cmd == SDB_CONNECTION_FETCH)
status = sdb_fe_list(conn);
else if (conn->cmd == SDB_CONNECTION_LOOKUP)
status = sdb_fe_lookup(conn);
+ else if (conn->cmd == SDB_CONNECTION_STORE)
+ status = sdb_fe_store(conn);
+
+ else if (conn->cmd == SDB_CONNECTION_SERVER_VERSION)
+ status = sdb_connection_server_version(conn);
+
else {
sdb_log(SDB_LOG_WARNING, "frontend: Ignoring invalid command %#x",
conn->cmd);
/* reset */
sdb_strbuf_clear(conn->errbuf);
- conn->cmd = sdb_proto_get_int(conn->buf, 0);
- conn->cmd_len = sdb_proto_get_int(conn->buf, sizeof(uint32_t));
-
+ if (sdb_proto_unmarshal_header(SDB_STRBUF_STR(conn->buf),
+ &conn->cmd, &conn->cmd_len) < 0)
+ return -1;
sdb_strbuf_skip(conn->buf, 0, 2 * sizeof(uint32_t));
if ((! conn->ready) && (conn->cmd != SDB_CONNECTION_STARTUP))
ssize_t status;
errno = 0;
- status = sdb_strbuf_read(conn->buf, conn->fd, 1024);
+ status = conn->read(conn, 1024);
if (status < 0) {
if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
break;
- close(conn->fd);
- conn->fd = -1;
+ sdb_connection_close(conn);
return (int)status;
}
else if (! status) /* EOF */
} /* sdb_connection_enable_logging */
sdb_conn_t *
-sdb_connection_accept(int fd)
+sdb_connection_accept(int fd, sdb_conn_setup_cb setup, void *user_data)
{
+ sdb_conn_t *conn;
+ const char *peer = "unknown";
+
if (fd < 0)
return NULL;
/* the placeholder will be replaced with the accepted file
* descriptor when initializing the object */
- return CONN(sdb_object_create(CONN_FD_PREFIX CONN_FD_PLACEHOLDER,
+ conn = CONN(sdb_object_create(CONN_FD_PREFIX CONN_FD_PLACEHOLDER,
connection_type, fd));
+ if (setup && (setup(conn, user_data) < 0)) {
+ sdb_object_deref(SDB_OBJ(conn));
+ return NULL;
+ }
+
+ if (conn->username)
+ peer = conn->username;
+
+ if (conn->client_addr.ss_family == AF_UNIX) {
+ sdb_log(SDB_LOG_INFO,
+ "frontend: Accepted connection from peer %s", peer);
+ }
+ else {
+ char host[1024] = "<unknown>", port[32] = "";
+ getnameinfo((struct sockaddr *)&conn->client_addr,
+ conn->client_addr_len, host, sizeof(host), port, sizeof(port),
+ NI_NUMERICHOST | NI_NUMERICSERV);
+ sdb_log(SDB_LOG_INFO, "frontend: Accepted connection from "
+ "peer %s at %s:%s", peer, host, port);
+ }
+ return conn;
} /* sdb_connection_create */
void
if (! conn)
return;
+ if (conn->finish)
+ conn->finish(conn);
+ conn->finish = NULL;
+
/* close the connection even if someone else still references it */
if (conn->fd >= 0)
close(conn->fd);
conn->fd = -1;
-
- sdb_object_deref(SDB_OBJ(conn));
} /* sdb_connection_close */
ssize_t
-sdb_connection_read(sdb_conn_t *conn)
+sdb_connection_handle(sdb_conn_t *conn)
{
ssize_t n = 0;
sdb_conn_set_ctx(NULL);
return n;
-} /* sdb_connection_read */
+} /* sdb_connection_handle */
ssize_t
sdb_connection_send(sdb_conn_t *conn, uint32_t code,
uint32_t msg_len, const char *msg)
{
+ char buf[2 * sizeof(uint32_t) + msg_len];
ssize_t status;
if ((! conn) || (conn->fd < 0))
return -1;
+ if (sdb_proto_marshal(buf, sizeof(buf), code, msg_len, msg) < 0)
+ return -1;
- status = sdb_proto_send_msg(conn->fd, code, msg_len, msg);
+ status = conn->write(conn, buf, sizeof(buf));
if (status < 0) {
char errbuf[1024];
/* tell other code that there was a problem and, more importantly,
* make sure we don't try to send further logs to the connection */
- close(conn->fd);
- conn->fd = -1;
+ sdb_connection_close(conn);
conn->ready = 0;
sdb_log(SDB_LOG_ERR, "frontend: Failed to send msg "
return 0;
} /* sdb_connection_ping */
+int
+sdb_connection_server_version(sdb_conn_t *conn)
+{
+ char msg[sizeof(uint32_t) + strlen(SDB_VERSION_EXTRA) + 1];
+
+ if ((! conn) || (conn->cmd != SDB_CONNECTION_SERVER_VERSION))
+ return -1;
+
+ sdb_proto_marshal_int32(msg, sizeof(msg), (uint32_t)SDB_VERSION);
+ strncpy(msg + sizeof(uint32_t), SDB_VERSION_EXTRA,
+ sizeof(msg) - sizeof(uint32_t));
+ sdb_connection_send(conn, SDB_CONNECTION_OK, (uint32_t)sizeof(msg), msg);
+ return 0;
+} /* sdb_connection_server_version */
+
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */