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119 lines
3.1 KiB
C
119 lines
3.1 KiB
C
/*
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* Copyright (C) 2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <dlfcn.h>
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#include "internal.h"
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#include "viralloc.h"
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#include "virjson.h"
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#include "qemu/qemu_monitor.h"
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#include "qemu/qemu_monitor_json.h"
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#define REAL_SYM(realFunc) \
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do { \
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if (!realFunc && !(realFunc = dlsym(RTLD_NEXT, __FUNCTION__))) { \
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fprintf(stderr, "Cannot find real '%s' symbol\n", \
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__FUNCTION__); \
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abort(); \
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} \
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} while (0)
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static bool first = true;
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static void
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printLineSkipEmpty(const char *line,
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FILE *fp)
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{
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const char *p;
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for (p = line; *p; p++) {
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if (p[0] == '\n' && p[1] == '\n')
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continue;
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fputc(*p, fp);
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}
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}
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static int (*realQemuMonitorSend)(qemuMonitor *mon,
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qemuMonitorMessage *msg);
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int
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qemuMonitorSend(qemuMonitor *mon,
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qemuMonitorMessage *msg)
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{
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g_autofree char *reformatted = NULL;
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REAL_SYM(realQemuMonitorSend);
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if (!(reformatted = virJSONStringReformat(msg->txBuffer, true))) {
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fprintf(stderr, "Failed to reformat command string '%s'\n", msg->txBuffer);
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abort();
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}
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if (first)
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first = false;
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else
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printLineSkipEmpty("\n", stdout);
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printLineSkipEmpty(reformatted, stdout);
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return realQemuMonitorSend(mon, msg);
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}
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static int (*realQemuMonitorJSONIOProcessLine)(qemuMonitor *mon,
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const char *line,
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qemuMonitorMessage *msg);
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int
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qemuMonitorJSONIOProcessLine(qemuMonitor *mon,
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const char *line,
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qemuMonitorMessage *msg)
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{
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g_autoptr(virJSONValue) value = NULL;
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g_autofree char *json = NULL;
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int ret;
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REAL_SYM(realQemuMonitorJSONIOProcessLine);
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ret = realQemuMonitorJSONIOProcessLine(mon, line, msg);
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if (ret == 0) {
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if (!(value = virJSONValueFromString(line)) ||
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!(json = virJSONValueToString(value, true))) {
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fprintf(stderr, "Failed to reformat reply string '%s'\n", line);
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abort();
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}
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/* Ignore QMP greeting */
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if (virJSONValueObjectHasKey(value, "QMP"))
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return 0;
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if (first)
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first = false;
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else
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printLineSkipEmpty("\n", stdout);
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printLineSkipEmpty(json, stdout);
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}
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return ret;
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}
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