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libvirt/tests/qemumonitortestutils.c
Tim Wiederhake 6ccafcb53e qemumonitortestutils: Use automatic mutex management 
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-02-11 16:03:35 +01:00

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/*
* Copyright (C) 2011-2013 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include <config.h>
#include <time.h>
#include "testutils.h"
#include "testutilsqemuschema.h"
#include "qemumonitortestutils.h"
#include "virthread.h"
#define LIBVIRT_QEMU_PROCESSPRIV_H_ALLOW
#include "qemu/qemu_processpriv.h"
#include "qemu/qemu_monitor.h"
#include "qemu/qemu_agent.h"
#include "qemu/qemu_qapi.h"
#include "rpc/virnetsocket.h"
#include "viralloc.h"
#include "virlog.h"
#include "virerror.h"
#include "virstring.h"
#include "vireventthread.h"
#define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("tests.qemumonitortestutils");
struct _qemuMonitorTestItem {
char *identifier;
qemuMonitorTestResponseCallback cb;
void *opaque;
virFreeCallback freecb;
};
struct _qemuMonitorTest {
virMutex lock;
virThread thread;
bool quit;
bool running;
bool started;
bool allowUnusedCommands;
bool skipValidationDeprecated;
bool skipValidationRemoved;
char *incoming;
size_t incomingLength;
size_t incomingCapacity;
char *outgoing;
size_t outgoingLength;
size_t outgoingCapacity;
virNetSocket *server;
virNetSocket *client;
virEventThread *eventThread;
qemuMonitor *mon;
qemuAgent *agent;
char *tmpdir;
size_t nitems;
qemuMonitorTestItem **items;
virDomainObj *vm;
GHashTable *qapischema;
};
static void
qemuMonitorTestItemFree(qemuMonitorTestItem *item)
{
if (!item)
return;
g_free(item->identifier);
if (item->freecb)
(item->freecb)(item->opaque);
g_free(item);
}
/*
* Appends data for a reply to the outgoing buffer
*/
int
qemuMonitorTestAddResponse(qemuMonitorTest *test,
const char *response)
{
size_t want = strlen(response) + 2;
size_t have = test->outgoingCapacity - test->outgoingLength;
VIR_DEBUG("Adding response to monitor command: '%s", response);
if (have < want) {
size_t need = want - have;
VIR_EXPAND_N(test->outgoing, test->outgoingCapacity, need);
}
want -= 2;
memcpy(test->outgoing + test->outgoingLength, response, want);
memcpy(test->outgoing + test->outgoingLength + want, "\r\n", 2);
test->outgoingLength += want + 2;
return 0;
}
static int
qemuMonitorTestAddErrorResponseInternal(qemuMonitorTest *test,
const char *usermsg)
{
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
g_autofree char *escapemsg = NULL;
g_autofree char *jsonmsg = NULL;
char *tmp;
if (!usermsg)
usermsg = "unexpected command";
virBufferEscape(&buf, '\\', "\"", "%s", usermsg);
escapemsg = virBufferContentAndReset(&buf);
/* replace newline/carriage return with space */
tmp = escapemsg;
while (*tmp) {
if (*tmp == '\r' || *tmp == '\n')
*tmp = ' ';
tmp++;
}
/* format the JSON error message */
jsonmsg = g_strdup_printf("{ \"error\": " " { \"desc\": \"%s\", "
" \"class\": \"UnexpectedCommand\" } }", escapemsg);
return qemuMonitorTestAddResponse(test, jsonmsg);
}
int
qemuMonitorTestAddInvalidCommandResponse(qemuMonitorTest *test,
const char *expectedcommand,
const char *actualcommand)
{
g_autofree char *msg = NULL;
msg = g_strdup_printf("expected command '%s' got '%s'", expectedcommand,
actualcommand);
return qemuMonitorTestAddErrorResponseInternal(test, msg);
}
int G_GNUC_PRINTF(2, 3)
qemuMonitorTestAddErrorResponse(qemuMonitorTest *test, const char *errmsg, ...)
{
va_list msgargs;
g_autofree char *msg = NULL;
g_autofree char *jsonmsg = NULL;
int ret = -1;
va_start(msgargs, errmsg);
msg = g_strdup_vprintf(errmsg, msgargs);
jsonmsg = g_strdup_printf("{ \"error\": " " { \"desc\": \"%s\", "
" \"class\": \"UnexpectedCommand\" } }", msg);
ret = qemuMonitorTestAddResponse(test, jsonmsg);
va_end(msgargs);
return ret;
}
static void G_GNUC_NORETURN G_GNUC_PRINTF(1, 2)
qemuMonitorTestError(const char *errmsg,
...)
{
va_list msgargs;
va_start(msgargs, errmsg);
g_fprintf(stderr, "\n");
g_vfprintf(stderr, errmsg, msgargs);
g_fprintf(stderr, "\n");
exit(EXIT_FAILURE); /* exempt from syntax-check */
}
static void G_GNUC_NORETURN
qemuMonitorTestErrorInvalidCommand(const char *expectedcommand,
const char *actualcommand)
{
qemuMonitorTestError("expected command '%s' got '%s'",
expectedcommand, actualcommand);
}
static int
qemuMonitorTestProcessCommand(qemuMonitorTest *test,
const char *cmdstr)
{
int ret;
VIR_DEBUG("Processing string from monitor handler: '%s", cmdstr);
if (test->nitems == 0) {
qemuMonitorTestError("unexpected command: '%s'", cmdstr);
} else {
qemuMonitorTestItem *item = test->items[0];
ret = (item->cb)(test, item, cmdstr);
qemuMonitorTestItemFree(item);
if (VIR_DELETE_ELEMENT(test->items, 0, test->nitems) < 0)
return -1;
}
return ret;
}
/*
* Handles read/write of monitor data on the monitor server side
*/
static void
qemuMonitorTestIO(virNetSocket *sock,
int events,
void *opaque)
{
qemuMonitorTest *test = opaque;
bool err = false;
VIR_LOCK_GUARD lock = virLockGuardLock(&test->lock);
if (test->quit)
return;
if (events & VIR_EVENT_HANDLE_WRITABLE) {
ssize_t ret;
if ((ret = virNetSocketWrite(sock,
test->outgoing,
test->outgoingLength)) < 0) {
err = true;
goto cleanup;
}
memmove(test->outgoing,
test->outgoing + ret,
test->outgoingLength - ret);
test->outgoingLength -= ret;
if ((test->outgoingCapacity - test->outgoingLength) > 1024)
VIR_SHRINK_N(test->outgoing, test->outgoingCapacity, 1024);
}
if (events & VIR_EVENT_HANDLE_READABLE) {
ssize_t ret, used;
char *t1, *t2;
if ((test->incomingCapacity - test->incomingLength) < 1024) {
VIR_EXPAND_N(test->incoming, test->incomingCapacity, 1024);
}
if ((ret = virNetSocketRead(sock,
test->incoming + test->incomingLength,
(test->incomingCapacity - test->incomingLength) - 1)) < 0) {
err = true;
goto cleanup;
}
test->incomingLength += ret;
test->incoming[test->incomingLength] = '\0';
/* Look to see if we've got a complete line, and
* if so, handle that command
*/
t1 = test->incoming;
while ((t2 = strstr(t1, "\n")) ||
(test->agent && (t2 = strstr(t1, "\r")))) {
*t2 = '\0';
if (qemuMonitorTestProcessCommand(test, t1) < 0) {
err = true;
goto cleanup;
}
t1 = t2 + 1;
}
used = t1 - test->incoming;
memmove(test->incoming, t1, test->incomingLength - used);
test->incomingLength -= used;
if ((test->incomingCapacity - test->incomingLength) > 1024) {
VIR_SHRINK_N(test->incoming,
test->incomingCapacity,
1024);
}
}
if (events & (VIR_EVENT_HANDLE_HANGUP |
VIR_EVENT_HANDLE_ERROR))
err = true;
cleanup:
if (err) {
virNetSocketRemoveIOCallback(sock);
virNetSocketClose(sock);
g_clear_pointer(&test->client, virObjectUnref);
} else {
events = VIR_EVENT_HANDLE_READABLE;
if (test->outgoingLength)
events |= VIR_EVENT_HANDLE_WRITABLE;
virNetSocketUpdateIOCallback(sock, events);
}
}
static void
qemuMonitorTestWorker(void *opaque)
{
qemuMonitorTest *test = opaque;
while (true) {
VIR_WITH_MUTEX_LOCK_GUARD(&test->lock) {
if (test->quit) {
test->running = false;
return;
}
}
if (virEventRunDefaultImpl() < 0) {
VIR_WITH_MUTEX_LOCK_GUARD(&test->lock) {
test->quit = true;
test->running = false;
return;
}
}
}
}
static void
qemuMonitorTestFreeTimer(int timer G_GNUC_UNUSED,
void *opaque G_GNUC_UNUSED)
{
/* nothing to be done here */
}
void
qemuMonitorTestFree(qemuMonitorTest *test)
{
size_t i;
int timer = -1;
if (!test)
return;
VIR_WITH_MUTEX_LOCK_GUARD(&test->lock) {
if (test->running) {
test->quit = true;
/* HACK: Add a dummy timeout to break event loop */
timer = virEventAddTimeout(0, qemuMonitorTestFreeTimer, NULL, NULL);
}
}
if (test->client) {
virNetSocketRemoveIOCallback(test->client);
virNetSocketClose(test->client);
virObjectUnref(test->client);
}
virObjectUnref(test->server);
if (test->mon) {
virObjectUnlock(test->mon);
qemuMonitorClose(test->mon);
}
if (test->agent) {
virObjectUnlock(test->agent);
qemuAgentClose(test->agent);
}
g_object_unref(test->eventThread);
virObjectUnref(test->vm);
if (test->started)
virThreadJoin(&test->thread);
if (timer != -1)
virEventRemoveTimeout(timer);
g_free(test->incoming);
g_free(test->outgoing);
for (i = 0; i < test->nitems; i++) {
if (!test->allowUnusedCommands) {
g_fprintf(stderr,
"\nunused test monitor item '%s'",
NULLSTR(test->items[i]->identifier));
}
qemuMonitorTestItemFree(test->items[i]);
}
g_free(test->items);
if (test->tmpdir && rmdir(test->tmpdir) < 0)
VIR_WARN("Failed to remove tempdir: %s", g_strerror(errno));
g_free(test->tmpdir);
if (!test->allowUnusedCommands &&
test->nitems != 0) {
qemuMonitorTestError("unused test monitor items are not allowed for this test\n");
}
virMutexDestroy(&test->lock);
g_free(test);
}
int
qemuMonitorTestAddHandler(qemuMonitorTest *test,
const char *identifier,
qemuMonitorTestResponseCallback cb,
void *opaque,
virFreeCallback freecb)
{
qemuMonitorTestItem *item;
item = g_new0(qemuMonitorTestItem, 1);
item->identifier = g_strdup(identifier);
item->cb = cb;
item->freecb = freecb;
item->opaque = opaque;
VIR_WITH_MUTEX_LOCK_GUARD(&test->lock) {
VIR_APPEND_ELEMENT(test->items, test->nitems, item);
}
return 0;
}
void *
qemuMonitorTestItemGetPrivateData(qemuMonitorTestItem *item)
{
return item ? item->opaque : NULL;
}
typedef struct _qemuMonitorTestCommandArgs qemuMonitorTestCommandArgs;
struct _qemuMonitorTestCommandArgs {
char *argname;
char *argval;
};
struct qemuMonitorTestHandlerData {
char *command_name;
char *cmderr;
char *response;
size_t nargs;
qemuMonitorTestCommandArgs *args;
char *expectArgs;
};
static void
qemuMonitorTestHandlerDataFree(void *opaque)
{
struct qemuMonitorTestHandlerData *data = opaque;
size_t i;
if (!data)
return;
for (i = 0; i < data->nargs; i++) {
g_free(data->args[i].argname);
g_free(data->args[i].argval);
}
g_free(data->command_name);
g_free(data->cmderr);
g_free(data->response);
g_free(data->args);
g_free(data->expectArgs);
g_free(data);
}
/* Returns -1 on error, 0 if validation was successful/not necessary */
static int
qemuMonitorTestProcessCommandDefaultValidate(qemuMonitorTest *test,
const char *cmdname,
virJSONValue *args)
{
g_auto(virBuffer) debug = VIR_BUFFER_INITIALIZER;
bool allowIncomplete = false;
if (!test->qapischema)
return 0;
if (test->agent) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
"Command validation testing is not "
"implemented for the guest agent");
return -1;
}
/* The schema of 'device_add' is incomplete so we relax the validator */
if (STREQ(cmdname, "device_add"))
allowIncomplete = true;
if (testQEMUSchemaValidateCommand(cmdname, args, test->qapischema,
test->skipValidationDeprecated,
test->skipValidationRemoved,
allowIncomplete,
&debug) < 0) {
if (virTestGetDebug() == 2) {
g_autofree char *argstr = NULL;
if (args)
argstr = virJSONValueToString(args, true);
fprintf(stderr,
"\nfailed to validate arguments of '%s' against QAPI schema\n"
"args:\n%s\nvalidator output:\n %s\n",
cmdname, NULLSTR(argstr), virBufferCurrentContent(&debug));
}
qemuMonitorTestError("failed to validate arguments of '%s' "
"against QAPI schema "
"(to see debug output use VIR_TEST_DEBUG=2)",
cmdname);
return -1;
}
return 0;
}
static int
qemuMonitorTestProcessCommandDefault(qemuMonitorTest *test,
qemuMonitorTestItem *item,
const char *cmdstr)
{
struct qemuMonitorTestHandlerData *data = item->opaque;
g_autoptr(virJSONValue) val = NULL;
virJSONValue *cmdargs = NULL;
const char *cmdname;
if (!(val = virJSONValueFromString(cmdstr)))
return -1;
if (!(cmdname = virJSONValueObjectGetString(val, "execute"))) {
qemuMonitorTestError("Missing command name in %s", cmdstr);
return -1;
}
cmdargs = virJSONValueObjectGet(val, "arguments");
if (qemuMonitorTestProcessCommandDefaultValidate(test, cmdname, cmdargs) < 0)
return -1;
if (data->command_name && STRNEQ(data->command_name, cmdname)) {
qemuMonitorTestErrorInvalidCommand(data->command_name, cmdname);
return -1;
} else {
return qemuMonitorTestAddResponse(test, data->response);
}
}
int
qemuMonitorTestAddItem(qemuMonitorTest *test,
const char *command_name,
const char *response)
{
struct qemuMonitorTestHandlerData *data;
data = g_new0(struct qemuMonitorTestHandlerData, 1);
data->command_name = g_strdup(command_name);
data->response = g_strdup(response);
return qemuMonitorTestAddHandler(test,
command_name,
qemuMonitorTestProcessCommandDefault,
data, qemuMonitorTestHandlerDataFree);
}
static int
qemuMonitorTestProcessCommandVerbatim(qemuMonitorTest *test,
qemuMonitorTestItem *item,
const char *cmdstr)
{
struct qemuMonitorTestHandlerData *data = item->opaque;
g_autofree char *reformatted = NULL;
g_autoptr(virJSONValue) json = NULL;
virJSONValue *cmdargs;
const char *cmdname;
int ret = -1;
/* JSON strings will be reformatted to simplify checking */
if (!(json = virJSONValueFromString(cmdstr)) ||
!(reformatted = virJSONValueToString(json, false)))
return -1;
cmdstr = reformatted;
/* in this case we do a best-effort schema check if we can find the command */
if ((cmdname = virJSONValueObjectGetString(json, "execute"))) {
cmdargs = virJSONValueObjectGet(json, "arguments");
if (qemuMonitorTestProcessCommandDefaultValidate(test, cmdname, cmdargs) < 0)
return -1;
}
if (STREQ(data->command_name, cmdstr)) {
ret = qemuMonitorTestAddResponse(test, data->response);
} else {
if (data->cmderr) {
qemuMonitorTestError("%s: %s expected %s",
data->cmderr, cmdstr, data->command_name);
} else {
qemuMonitorTestErrorInvalidCommand(data->command_name, cmdstr);
}
}
return ret;
}
/**
* qemuMonitorTestAddItemVerbatim:
* @test: monitor test object
* @command: full expected command syntax
* @cmderr: possible explanation of expected command (may be NULL)
* @response: full reply of @command
*
* Adds a test command for the simulated monitor. The full syntax is checked
* as specified in @command. For JSON monitor tests formatting/whitespace is
* ignored. If the command on the monitor is not as expected an error containing
* @cmderr is returned. Otherwise @response is put as-is on the monitor.
*
* Returns 0 when command was successfully added, -1 on error.
*/
int
qemuMonitorTestAddItemVerbatim(qemuMonitorTest *test,
const char *command,
const char *cmderr,
const char *response)
{
struct qemuMonitorTestHandlerData *data;
data = g_new0(struct qemuMonitorTestHandlerData, 1);
data->response = g_strdup(response);
data->cmderr = g_strdup(cmderr);
data->command_name = virJSONStringReformat(command, false);
if (!data->command_name)
goto error;
return qemuMonitorTestAddHandler(test,
command,
qemuMonitorTestProcessCommandVerbatim,
data, qemuMonitorTestHandlerDataFree);
error:
qemuMonitorTestHandlerDataFree(data);
return -1;
}
static int
qemuMonitorTestProcessGuestAgentSync(qemuMonitorTest *test,
qemuMonitorTestItem *item G_GNUC_UNUSED,
const char *cmdstr)
{
g_autoptr(virJSONValue) val = NULL;
virJSONValue *args;
unsigned long long id;
const char *cmdname;
g_autofree char *retmsg = NULL;
if (!(val = virJSONValueFromString(cmdstr)))
return -1;
if (!(cmdname = virJSONValueObjectGetString(val, "execute")))
return qemuMonitorTestAddErrorResponse(test, "Missing guest-sync command name");
if (STRNEQ(cmdname, "guest-sync"))
return qemuMonitorTestAddInvalidCommandResponse(test, "guest-sync", cmdname);
if (!(args = virJSONValueObjectGet(val, "arguments")))
return qemuMonitorTestAddErrorResponse(test, "Missing arguments for guest-sync");
if (virJSONValueObjectGetNumberUlong(args, "id", &id))
return qemuMonitorTestAddErrorResponse(test, "Missing id for guest sync");
retmsg = g_strdup_printf("{\"return\":%llu}", id);
return qemuMonitorTestAddResponse(test, retmsg);
}
int
qemuMonitorTestAddAgentSyncResponse(qemuMonitorTest *test)
{
if (!test->agent) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
"This test is not an agent test");
return -1;
}
return qemuMonitorTestAddHandler(test,
"agent-sync",
qemuMonitorTestProcessGuestAgentSync,
NULL, NULL);
}
static int
qemuMonitorTestProcessCommandWithArgs(qemuMonitorTest *test,
qemuMonitorTestItem *item,
const char *cmdstr)
{
struct qemuMonitorTestHandlerData *data = item->opaque;
g_autoptr(virJSONValue) val = NULL;
virJSONValue *args;
virJSONValue *argobj;
const char *cmdname;
size_t i;
if (!(val = virJSONValueFromString(cmdstr)))
return -1;
if (!(cmdname = virJSONValueObjectGetString(val, "execute"))) {
qemuMonitorTestError("Missing command name in %s", cmdstr);
return -1;
}
if (data->command_name &&
STRNEQ(data->command_name, cmdname)) {
qemuMonitorTestErrorInvalidCommand(data->command_name, cmdname);
return -1;
}
if (!(args = virJSONValueObjectGet(val, "arguments"))) {
qemuMonitorTestError("Missing arguments section for command '%s'",
NULLSTR(data->command_name));
return -1;
}
/* validate the args */
for (i = 0; i < data->nargs; i++) {
qemuMonitorTestCommandArgs *arg = &data->args[i];
g_autofree char *argstr = NULL;
if (!(argobj = virJSONValueObjectGet(args, arg->argname))) {
qemuMonitorTestError("Missing argument '%s' for command '%s'",
arg->argname,
NULLSTR(data->command_name));
return -1;
}
/* convert the argument to string */
if (!(argstr = virJSONValueToString(argobj, false)))
return -1;
/* verify that the argument value is expected */
if (STRNEQ(argstr, arg->argval)) {
qemuMonitorTestError("Invalid value of argument '%s' of command '%s': "
"expected '%s' got '%s'",
arg->argname,
NULLSTR(data->command_name),
arg->argval, argstr);
return -1;
}
}
/* arguments checked out, return the response */
return qemuMonitorTestAddResponse(test, data->response);
}
/* this allows to add a responder that is able to check
* a (shallow) structure of arguments for a command */
int
qemuMonitorTestAddItemParams(qemuMonitorTest *test,
const char *cmdname,
const char *response,
...)
{
struct qemuMonitorTestHandlerData *data;
const char *argname;
const char *argval;
va_list args;
va_start(args, response);
data = g_new0(struct qemuMonitorTestHandlerData, 1);
data->command_name = g_strdup(cmdname);
data->response = g_strdup(response);
while ((argname = va_arg(args, char *))) {
size_t i;
if (!(argval = va_arg(args, char *))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"Missing argument value for argument '%s'",
argname);
goto error;
}
i = data->nargs;
VIR_EXPAND_N(data->args, data->nargs, 1);
data->args[i].argname = g_strdup(argname);
data->args[i].argval = g_strdup(argval);
}
va_end(args);
return qemuMonitorTestAddHandler(test,
cmdname,
qemuMonitorTestProcessCommandWithArgs,
data, qemuMonitorTestHandlerDataFree);
error:
va_end(args);
qemuMonitorTestHandlerDataFree(data);
return -1;
}
static int
qemuMonitorTestProcessCommandWithArgStr(qemuMonitorTest *test,
qemuMonitorTestItem *item,
const char *cmdstr)
{
struct qemuMonitorTestHandlerData *data = item->opaque;
g_autoptr(virJSONValue) val = NULL;
virJSONValue *args;
g_autofree char *argstr = NULL;
const char *cmdname;
if (!(val = virJSONValueFromString(cmdstr)))
return -1;
if (!(cmdname = virJSONValueObjectGetString(val, "execute"))) {
qemuMonitorTestError("Missing command name in %s", cmdstr);
return -1;
}
if (STRNEQ(data->command_name, cmdname)) {
qemuMonitorTestErrorInvalidCommand(data->command_name, cmdname);
return -1;
}
if (!(args = virJSONValueObjectGet(val, "arguments"))) {
qemuMonitorTestError("Missing arguments section for command '%s'",
data->command_name);
return -1;
}
/* convert the arguments to string */
if (!(argstr = virJSONValueToString(args, false)))
return -1;
/* verify that the argument value is expected */
if (STRNEQ(argstr, data->expectArgs)) {
qemuMonitorTestError("%s: expected arguments: '%s', got: '%s'",
data->command_name,
data->expectArgs, argstr);
return -1;
}
/* arguments checked out, return the response */
return qemuMonitorTestAddResponse(test, data->response);
}
/**
* qemuMonitorTestAddItemExpect:
*
* @test: test monitor object
* @cmdname: command name
* @cmdargs: expected arguments of the command
* @apostrophe: convert apostrophes (') in @cmdargs to quotes (")
* @response: simulated response of the command
*
* Simulates a qemu monitor command. Checks that the 'arguments' of the qmp
* command are expected. If @apostrophe is true apostrophes are converted to
* quotes for simplification of writing the strings into code.
*/
int
qemuMonitorTestAddItemExpect(qemuMonitorTest *test,
const char *cmdname,
const char *cmdargs,
bool apostrophe,
const char *response)
{
struct qemuMonitorTestHandlerData *data;
data = g_new0(struct qemuMonitorTestHandlerData, 1);
data->command_name = g_strdup(cmdname);
data->response = g_strdup(response);
data->expectArgs = g_strdup(cmdargs);
if (apostrophe) {
char *tmp = data->expectArgs;
while (*tmp != '\0') {
if (*tmp == '\'')
*tmp = '"';
tmp++;
}
}
return qemuMonitorTestAddHandler(test,
cmdname,
qemuMonitorTestProcessCommandWithArgStr,
data, qemuMonitorTestHandlerDataFree);
}
static void
qemuMonitorTestEOFNotify(qemuMonitor *mon G_GNUC_UNUSED,
virDomainObj *vm G_GNUC_UNUSED,
void *opaque G_GNUC_UNUSED)
{
}
static void
qemuMonitorTestErrorNotify(qemuMonitor *mon G_GNUC_UNUSED,
virDomainObj *vm G_GNUC_UNUSED,
void *opaque G_GNUC_UNUSED)
{
}
static qemuMonitorCallbacks qemuMonitorTestCallbacks = {
.eofNotify = qemuMonitorTestEOFNotify,
.errorNotify = qemuMonitorTestErrorNotify,
.domainDeviceDeleted = qemuProcessHandleDeviceDeleted,
};
static void
qemuMonitorTestAgentNotify(qemuAgent *agent G_GNUC_UNUSED,
virDomainObj *vm G_GNUC_UNUSED)
{
}
static qemuAgentCallbacks qemuMonitorTestAgentCallbacks = {
.eofNotify = qemuMonitorTestAgentNotify,
.errorNotify = qemuMonitorTestAgentNotify,
};
static qemuMonitorTest *
qemuMonitorCommonTestNew(virDomainXMLOption *xmlopt,
virDomainObj *vm,
virDomainChrSourceDef *src)
{
g_autoptr(qemuMonitorTest) test = NULL;
g_autofree char *path = NULL;
g_autofree char *tmpdir_template = NULL;
test = g_new0(qemuMonitorTest, 1);
if (virMutexInit(&test->lock) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
"Cannot initialize mutex");
VIR_FREE(test);
return NULL;
}
tmpdir_template = g_strdup("/tmp/libvirt_XXXXXX");
if (!(test->tmpdir = g_mkdtemp(tmpdir_template))) {
virReportSystemError(errno, "%s",
"Failed to create temporary directory");
return NULL;
}
tmpdir_template = NULL;
path = g_strdup_printf("%s/qemumonitorjsontest.sock", test->tmpdir);
if (vm) {
test->vm = virObjectRef(vm);
} else {
test->vm = virDomainObjNew(xmlopt);
if (!test->vm)
return NULL;
if (!(test->vm->def = virDomainDefNew(xmlopt)))
return NULL;
}
if (virNetSocketNewListenUNIX(path, 0700, geteuid(), getegid(),
&test->server) < 0)
return NULL;
memset(src, 0, sizeof(*src));
src->type = VIR_DOMAIN_CHR_TYPE_UNIX;
src->data.nix.path = (char *)path;
src->data.nix.listen = false;
path = NULL;
if (virNetSocketListen(test->server, 1) < 0)
return NULL;
return g_steal_pointer(&test);
}
static int
qemuMonitorCommonTestInit(qemuMonitorTest *test)
{
int events = VIR_EVENT_HANDLE_READABLE;
if (!test)
return -1;
if (virNetSocketAccept(test->server, &test->client) < 0)
return -1;
if (!test->client)
return -1;
if (test->outgoingLength > 0)
events = VIR_EVENT_HANDLE_WRITABLE;
if (virNetSocketAddIOCallback(test->client,
events,
qemuMonitorTestIO,
test,
NULL) < 0)
return -1;
VIR_WITH_MUTEX_LOCK_GUARD(&test->lock) {
if (virThreadCreate(&test->thread, true, qemuMonitorTestWorker, test) < 0)
return -1;
test->started = test->running = true;
}
return 0;
}
#define QEMU_JSON_GREETING "{\"QMP\":"\
" {\"version\":"\
" {\"qemu\":"\
" {\"micro\": 1,"\
" \"minor\": 0,"\
" \"major\": 1"\
" },"\
" \"package\": \"(qemu-kvm-1.0.1)"\
" \"},"\
" \"capabilities\": []"\
" }"\
"}"
/* We skip the normal handshake reply of "{\"execute\":\"qmp_capabilities\"}" */
qemuMonitorTest *
qemuMonitorTestNew(virDomainXMLOption *xmlopt,
virDomainObj *vm,
virQEMUDriver *driver,
const char *greeting,
GHashTable *schema)
{
g_autoptr(qemuMonitorTest) test = NULL;
virDomainChrSourceDef src;
memset(&src, 0, sizeof(src));
if (!(test = qemuMonitorCommonTestNew(xmlopt, vm, &src)))
goto error;
if (!(test->eventThread = virEventThreadNew("mon-test")))
goto error;
test->qapischema = schema;
if (!(test->mon = qemuMonitorOpen(test->vm,
&src,
true,
0,
virEventThreadGetContext(test->eventThread),
&qemuMonitorTestCallbacks,
driver)))
goto error;
virObjectLock(test->mon);
if (!greeting)
greeting = QEMU_JSON_GREETING;
if (qemuMonitorTestAddResponse(test, greeting) < 0)
goto error;
if (qemuMonitorCommonTestInit(test) < 0)
goto error;
virDomainChrSourceDefClear(&src);
return g_steal_pointer(&test);
error:
virDomainChrSourceDefClear(&src);
return NULL;
}
/**
* qemuMonitorTestNewFromFile:
* @fileName: File name to load monitor replies from
* @xmlopt: XML parser configuration object
* @simple: see below
*
* Create a JSON test monitor simulator object and fill it with replies
* specified in @fileName. The file contains JSON reply objects separated by
* empty lines. If @simple is true a generic QMP greeting is automatically
* added as the first reply, otherwise the first entry in the file is used.
*
* Returns the monitor object on success; NULL on error.
*/
qemuMonitorTest *
qemuMonitorTestNewFromFile(const char *fileName,
virDomainXMLOption *xmlopt,
bool simple)
{
g_autoptr(qemuMonitorTest) test = NULL;
g_autofree char *json = NULL;
char *tmp;
char *singleReply;
if (virTestLoadFile(fileName, &json) < 0)
return NULL;
if (simple && !(test = qemuMonitorTestNewSimple(xmlopt)))
return NULL;
/* Our JSON parser expects replies to be separated by a newline character.
* Hence we must preprocess the file a bit. */
tmp = singleReply = json;
while ((tmp = strchr(tmp, '\n'))) {
/* It is safe to touch tmp[1] since all strings ends with '\0'. */
bool eof = !tmp[1];
if (*(tmp + 1) != '\n') {
*tmp = ' ';
tmp++;
} else {
/* Cut off a single reply. */
*(tmp + 1) = '\0';
if (test) {
if (qemuMonitorTestAddItem(test, NULL, singleReply) < 0)
return NULL;
} else {
/* Create new mocked monitor with our greeting */
if (!(test = qemuMonitorTestNew(xmlopt, NULL, NULL,
singleReply, NULL)))
return NULL;
}
if (!eof) {
/* Move the @tmp and @singleReply. */
tmp += 2;
singleReply = tmp;
}
}
if (eof)
break;
}
if (test && qemuMonitorTestAddItem(test, NULL, singleReply) < 0)
return NULL;
return g_steal_pointer(&test);
}
/**
* qemuMonitorTestAllowUnusedCommands:
* @test: test monitor object
*
* By default all test items/commands must be used by the test. This function
* allows to override the requirement for individual tests e.g. if it's necessary
* to test some negative scenarios which would not use all commands.
*/
void
qemuMonitorTestAllowUnusedCommands(qemuMonitorTest *test)
{
test->allowUnusedCommands = true;
}
/**
* qemuMonitorTestSkipDeprecatedValidation:
* @test: test monitor object
* @allowRemoved: don't produce errors if command was removed from QMP schema
*
* By default if the QMP schema is provided all test items/commands are
* validated against the schema. This function allows to override the validation
* and additionally if @allowRemoved is true and if such a command is no longer
* present in the QMP, only a warning is printed.
*
* '@allowRemoved' must be used only if a suitable replacement is already in
* use and the code tests legacy interactions.
*
* Note that currently '@allowRemoved' influences only removed commands. If an
* argument is removed it will still fail validation.
*/
void
qemuMonitorTestSkipDeprecatedValidation(qemuMonitorTest *test,
bool allowRemoved)
{
test->skipValidationDeprecated = true;
test->skipValidationRemoved = allowRemoved;
}
static int
qemuMonitorTestFullAddItem(qemuMonitorTest *test,
const char *filename,
const char *command,
const char *response,
size_t line)
{
g_autofree char *cmderr = NULL;
cmderr = g_strdup_printf("wrong expected command in %s:%zu: ", filename, line);
return qemuMonitorTestAddItemVerbatim(test, command, cmderr, response);
}
/**
* qemuMonitorTestProcessFileEntries:
* @inputstr: input file contents (modified)
* @fileName: File name of @inputstr (for error reporting)
* @items: filled with command, reply tuples
* @nitems: Count of elements in @items.
*
* Process a monitor interaction file.
*
* The file contains a sequence of JSON commands and reply objects separated by
* empty lines. A command is followed by a reply.
*/
int
qemuMonitorTestProcessFileEntries(char *inputstr,
const char *fileName,
struct qemuMonitorTestCommandReplyTuple **items,
size_t *nitems)
{
size_t nalloc = 0;
char *tmp = inputstr;
size_t line = 0;
char *command = inputstr;
char *response = NULL;
size_t commandln = 0;
*items = NULL;
*nitems = 0;
while ((tmp = strchr(tmp, '\n'))) {
line++;
/* eof */
if (!tmp[1])
break;
/* concatenate block which was broken up for readability */
if (*(tmp + 1) != '\n') {
*tmp = ' ';
tmp++;
continue;
}
/* Cut off a single reply. */
*(tmp + 1) = '\0';
if (response) {
struct qemuMonitorTestCommandReplyTuple *item;
VIR_RESIZE_N(*items, nalloc, *nitems, 1);
item = *items + *nitems;
item->command = g_steal_pointer(&command);
item->reply = g_steal_pointer(&response);
item->line = commandln;
(*nitems)++;
}
/* Move the @tmp and @singleReply. */
tmp += 2;
if (!command) {
commandln = line;
command = tmp;
} else {
response = tmp;
}
}
if (command) {
struct qemuMonitorTestCommandReplyTuple *item;
if (!response) {
virReportError(VIR_ERR_INTERNAL_ERROR, "missing response for command "
"on line '%zu' in '%s'", commandln, fileName);
return -1;
}
VIR_RESIZE_N(*items, nalloc, *nitems, 1);
item = *items + *nitems;
item->command = g_steal_pointer(&command);
item->reply = g_steal_pointer(&response);
item->line = commandln;
(*nitems)++;
}
return 0;
}
/**
* qemuMonitorTestNewFromFileFull:
* @fileName: File name to load monitor replies from
* @driver: qemu driver object
* @vm: domain object (may be null if it's not needed by the test)
* @qmpschema: QMP schema data hash table if QMP checking is required
*
* Create a JSON test monitor simulator object and fill it with expected command
* sequence and replies specified in @fileName.
*
* The file contains a sequence of JSON commands and reply objects separated by
* empty lines. A command is followed by a reply. The QMP greeting is added
* automatically.
*
* Returns the monitor object on success; NULL on error.
*/
qemuMonitorTest *
qemuMonitorTestNewFromFileFull(const char *fileName,
virQEMUDriver *driver,
virDomainObj *vm,
GHashTable *qmpschema)
{
g_autoptr(qemuMonitorTest) ret = NULL;
g_autofree char *jsonstr = NULL;
g_autofree struct qemuMonitorTestCommandReplyTuple *items = NULL;
size_t nitems = 0;
size_t i;
if (virTestLoadFile(fileName, &jsonstr) < 0)
return NULL;
if (!(ret = qemuMonitorTestNew(driver->xmlopt, vm, driver, NULL,
qmpschema)))
return NULL;
if (qemuMonitorTestProcessFileEntries(jsonstr, fileName, &items, &nitems) < 0)
return NULL;
for (i = 0; i < nitems; i++) {
struct qemuMonitorTestCommandReplyTuple *item = items + i;
if (qemuMonitorTestFullAddItem(ret, fileName, item->command, item->reply,
item->line) < 0)
return NULL;
}
return g_steal_pointer(&ret);
}
qemuMonitorTest *
qemuMonitorTestNewAgent(virDomainXMLOption *xmlopt)
{
g_autoptr(qemuMonitorTest) test = NULL;
virDomainChrSourceDef src;
memset(&src, 0, sizeof(src));
if (!(test = qemuMonitorCommonTestNew(xmlopt, NULL, &src)))
goto error;
if (!(test->eventThread = virEventThreadNew("agent-test")))
goto error;
if (!(test->agent = qemuAgentOpen(test->vm,
&src,
virEventThreadGetContext(test->eventThread),
&qemuMonitorTestAgentCallbacks,
false)))
goto error;
virObjectLock(test->agent);
if (qemuMonitorCommonTestInit(test) < 0)
goto error;
virDomainChrSourceDefClear(&src);
return g_steal_pointer(&test);
error:
virDomainChrSourceDefClear(&src);
return NULL;
}
qemuMonitor *
qemuMonitorTestGetMonitor(qemuMonitorTest *test)
{
return test->mon;
}
qemuAgent *
qemuMonitorTestGetAgent(qemuMonitorTest *test)
{
return test->agent;
}
virDomainObj *
qemuMonitorTestGetDomainObj(qemuMonitorTest *test)
{
return test->vm;
}
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