* THE SOFTWARE.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
+#include "qemu/osdep.h"
#include <libssh2.h>
#include <libssh2_sftp.h>
#include "block/block_int.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "qemu/cutils.h"
#include "qemu/sockets.h"
#include "qemu/uri.h"
+#include "qapi-visit.h"
#include "qapi/qmp/qint.h"
+#include "qapi/qmp/qstring.h"
+#include "qapi/qobject-input-visitor.h"
+#include "qapi/qobject-output-visitor.h"
/* DEBUG_SSH=1 enables the DPRINTF (debugging printf) statements in
* this block driver code.
*/
LIBSSH2_SFTP_ATTRIBUTES attrs;
+ InetSocketAddress *inet;
+
/* Used to warn if 'flush' is not supported. */
- char *hostport;
bool unsafe_flush_warning;
} BDRVSSHState;
static void ssh_state_free(BDRVSSHState *s)
{
- g_free(s->hostport);
if (s->sftp_handle) {
libssh2_sftp_close(s->sftp_handle);
}
static int parse_uri(const char *filename, QDict *options, Error **errp)
{
URI *uri = NULL;
- QueryParams *qp = NULL;
+ QueryParams *qp;
+ char *port_str;
int i;
uri = uri_parse(filename);
}
if(uri->user && strcmp(uri->user, "") != 0) {
- qdict_put(options, "user", qstring_from_str(uri->user));
+ qdict_put_str(options, "user", uri->user);
}
- qdict_put(options, "host", qstring_from_str(uri->server));
+ qdict_put_str(options, "server.host", uri->server);
- if (uri->port) {
- qdict_put(options, "port", qint_from_int(uri->port));
- }
+ port_str = g_strdup_printf("%d", uri->port ?: 22);
+ qdict_put_str(options, "server.port", port_str);
+ g_free(port_str);
- qdict_put(options, "path", qstring_from_str(uri->path));
+ qdict_put_str(options, "path", uri->path);
/* Pick out any query parameters that we understand, and ignore
* the rest.
*/
for (i = 0; i < qp->n; ++i) {
if (strcmp(qp->p[i].name, "host_key_check") == 0) {
- qdict_put(options, "host_key_check",
- qstring_from_str(qp->p[i].value));
+ qdict_put_str(options, "host_key_check", qp->p[i].value);
}
}
return 0;
err:
- if (qp) {
- query_params_free(qp);
- }
if (uri) {
uri_free(uri);
}
return -EINVAL;
}
+static bool ssh_has_filename_options_conflict(QDict *options, Error **errp)
+{
+ const QDictEntry *qe;
+
+ for (qe = qdict_first(options); qe; qe = qdict_next(options, qe)) {
+ if (!strcmp(qe->key, "host") ||
+ !strcmp(qe->key, "port") ||
+ !strcmp(qe->key, "path") ||
+ !strcmp(qe->key, "user") ||
+ !strcmp(qe->key, "host_key_check") ||
+ strstart(qe->key, "server.", NULL))
+ {
+ error_setg(errp, "Option '%s' cannot be used with a file name",
+ qe->key);
+ return true;
+ }
+ }
+
+ return false;
+}
+
static void ssh_parse_filename(const char *filename, QDict *options,
Error **errp)
{
- if (qdict_haskey(options, "user") ||
- qdict_haskey(options, "host") ||
- qdict_haskey(options, "port") ||
- qdict_haskey(options, "path") ||
- qdict_haskey(options, "host_key_check")) {
- error_setg(errp, "user, host, port, path, host_key_check cannot be used at the same time as a file option");
+ if (ssh_has_filename_options_conflict(options, errp)) {
return;
}
return ret;
}
+static QemuOptsList ssh_runtime_opts = {
+ .name = "ssh",
+ .head = QTAILQ_HEAD_INITIALIZER(ssh_runtime_opts.head),
+ .desc = {
+ {
+ .name = "host",
+ .type = QEMU_OPT_STRING,
+ .help = "Host to connect to",
+ },
+ {
+ .name = "port",
+ .type = QEMU_OPT_NUMBER,
+ .help = "Port to connect to",
+ },
+ {
+ .name = "path",
+ .type = QEMU_OPT_STRING,
+ .help = "Path of the image on the host",
+ },
+ {
+ .name = "user",
+ .type = QEMU_OPT_STRING,
+ .help = "User as which to connect",
+ },
+ {
+ .name = "host_key_check",
+ .type = QEMU_OPT_STRING,
+ .help = "Defines how and what to check the host key against",
+ },
+ },
+};
+
+static bool ssh_process_legacy_socket_options(QDict *output_opts,
+ QemuOpts *legacy_opts,
+ Error **errp)
+{
+ const char *host = qemu_opt_get(legacy_opts, "host");
+ const char *port = qemu_opt_get(legacy_opts, "port");
+
+ if (!host && port) {
+ error_setg(errp, "port may not be used without host");
+ return false;
+ }
+
+ if (host) {
+ qdict_put_str(output_opts, "server.host", host);
+ qdict_put_str(output_opts, "server.port", port ?: stringify(22));
+ }
+
+ return true;
+}
+
+static InetSocketAddress *ssh_config(QDict *options, Error **errp)
+{
+ InetSocketAddress *inet = NULL;
+ QDict *addr = NULL;
+ QObject *crumpled_addr = NULL;
+ Visitor *iv = NULL;
+ Error *local_error = NULL;
+
+ qdict_extract_subqdict(options, &addr, "server.");
+ if (!qdict_size(addr)) {
+ error_setg(errp, "SSH server address missing");
+ goto out;
+ }
+
+ crumpled_addr = qdict_crumple(addr, errp);
+ if (!crumpled_addr) {
+ goto out;
+ }
+
+ /*
+ * FIXME .numeric, .to, .ipv4 or .ipv6 don't work with -drive.
+ * .to doesn't matter, it's ignored anyway.
+ * That's because when @options come from -blockdev or
+ * blockdev_add, members are typed according to the QAPI schema,
+ * but when they come from -drive, they're all QString. The
+ * visitor expects the former.
+ */
+ iv = qobject_input_visitor_new(crumpled_addr);
+ visit_type_InetSocketAddress(iv, NULL, &inet, &local_error);
+ if (local_error) {
+ error_propagate(errp, local_error);
+ goto out;
+ }
+
+out:
+ QDECREF(addr);
+ qobject_decref(crumpled_addr);
+ visit_free(iv);
+ return inet;
+}
+
static int connect_to_ssh(BDRVSSHState *s, QDict *options,
int ssh_flags, int creat_mode, Error **errp)
{
int r, ret;
- const char *host, *user, *path, *host_key_check;
- int port;
-
- host = qdict_get_str(options, "host");
+ QemuOpts *opts = NULL;
+ Error *local_err = NULL;
+ const char *user, *path, *host_key_check;
+ long port = 0;
+
+ opts = qemu_opts_create(&ssh_runtime_opts, NULL, 0, &error_abort);
+ qemu_opts_absorb_qdict(opts, options, &local_err);
+ if (local_err) {
+ ret = -EINVAL;
+ error_propagate(errp, local_err);
+ goto err;
+ }
- if (qdict_haskey(options, "port")) {
- port = qdict_get_int(options, "port");
- } else {
- port = 22;
+ if (!ssh_process_legacy_socket_options(options, opts, errp)) {
+ ret = -EINVAL;
+ goto err;
}
- path = qdict_get_str(options, "path");
+ path = qemu_opt_get(opts, "path");
+ if (!path) {
+ ret = -EINVAL;
+ error_setg(errp, "No path was specified");
+ goto err;
+ }
- if (qdict_haskey(options, "user")) {
- user = qdict_get_str(options, "user");
- } else {
+ user = qemu_opt_get(opts, "user");
+ if (!user) {
user = g_get_user_name();
if (!user) {
error_setg_errno(errp, errno, "Can't get user name");
}
}
- if (qdict_haskey(options, "host_key_check")) {
- host_key_check = qdict_get_str(options, "host_key_check");
- } else {
+ host_key_check = qemu_opt_get(opts, "host_key_check");
+ if (!host_key_check) {
host_key_check = "yes";
}
- /* Construct the host:port name for inet_connect. */
- g_free(s->hostport);
- s->hostport = g_strdup_printf("%s:%d", host, port);
+ /* Pop the config into our state object, Exit if invalid */
+ s->inet = ssh_config(options, errp);
+ if (!s->inet) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (qemu_strtol(s->inet->port, NULL, 10, &port) < 0) {
+ error_setg(errp, "Use only numeric port value");
+ ret = -EINVAL;
+ goto err;
+ }
/* Open the socket and connect. */
- s->sock = inet_connect(s->hostport, errp);
+ s->sock = inet_connect_saddr(s->inet, NULL, NULL, errp);
if (s->sock < 0) {
- ret = -errno;
+ ret = -EIO;
goto err;
}
}
/* Check the remote host's key against known_hosts. */
- ret = check_host_key(s, host, port, host_key_check, errp);
+ ret = check_host_key(s, s->inet->host, port, host_key_check,
+ errp);
if (ret < 0) {
goto err;
}
goto err;
}
+ qemu_opts_del(opts);
+
r = libssh2_sftp_fstat(s->sftp_handle, &s->attrs);
if (r < 0) {
sftp_error_setg(errp, s, "failed to read file attributes");
return -EINVAL;
}
- /* Delete the options we've used; any not deleted will cause the
- * block layer to give an error about unused options.
- */
- qdict_del(options, "host");
- qdict_del(options, "port");
- qdict_del(options, "user");
- qdict_del(options, "path");
- qdict_del(options, "host_key_check");
-
return 0;
err:
}
s->session = NULL;
+ qemu_opts_del(opts);
+
return ret;
}
ssh_state_init(&s);
/* Get desired file size. */
- total_size = qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0);
+ total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+ BDRV_SECTOR_SIZE);
DPRINTF("total_size=%" PRIi64, total_size);
uri_options = qdict_new();
DPRINTF("co=%p", co);
- qemu_coroutine_enter(co, NULL);
+ aio_co_wake(co);
}
-static coroutine_fn void set_fd_handler(BDRVSSHState *s, BlockDriverState *bs)
+/* A non-blocking call returned EAGAIN, so yield, ensuring the
+ * handlers are set up so that we'll be rescheduled when there is an
+ * interesting event on the socket.
+ */
+static coroutine_fn void co_yield(BDRVSSHState *s, BlockDriverState *bs)
{
int r;
IOHandler *rd_handler = NULL, *wr_handler = NULL;
rd_handler, wr_handler);
aio_set_fd_handler(bdrv_get_aio_context(bs), s->sock,
- rd_handler, wr_handler, co);
-}
-
-static coroutine_fn void clear_fd_handler(BDRVSSHState *s,
- BlockDriverState *bs)
-{
- DPRINTF("s->sock=%d", s->sock);
- aio_set_fd_handler(bdrv_get_aio_context(bs), s->sock, NULL, NULL, NULL);
-}
-
-/* A non-blocking call returned EAGAIN, so yield, ensuring the
- * handlers are set up so that we'll be rescheduled when there is an
- * interesting event on the socket.
- */
-static coroutine_fn void co_yield(BDRVSSHState *s, BlockDriverState *bs)
-{
- set_fd_handler(s, bs);
+ false, rd_handler, wr_handler, NULL, co);
qemu_coroutine_yield();
- clear_fd_handler(s, bs);
+ DPRINTF("s->sock=%d - back", s->sock);
+ aio_set_fd_handler(bdrv_get_aio_context(bs), s->sock, false,
+ NULL, NULL, NULL, NULL);
}
/* SFTP has a function `libssh2_sftp_seek64' which seeks to a position
{
if (!s->unsafe_flush_warning) {
error_report("warning: ssh server %s does not support fsync",
- s->hostport);
+ s->inet->host);
if (what) {
error_report("to support fsync, you need %s", what);
}
projects / qemu.git / blobdiff