Revert "util: avoid symbol clash between json libraries"

This reverts commit ce3c6ef6.

Jansson cannot parse QEMU's quirky JSON.
Revert back to yajl.

https://bugzilla.redhat.com/show_bug.cgi?id=1614569Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

libvirt.spec.in

@@ -898,8 +898,6 @@ Requires: ncurses
 Requires: gettext
 # Needed by virt-pki-validate script.
 Requires: gnutls-utils
-# We dlopen(libjansson.so.4), so need an explicit dep
-Requires: jansson
 %if %{with_bash_completion}
 Requires: %{name}-bash-completion = %{version}-%{release}
 %endif

src/Makefile.am

@@ -552,6 +552,7 @@ libvirt_admin_la_CFLAGS += \
 
 libvirt_admin_la_LIBADD += \
 		$(CAPNG_LIBS) \
+		$(JANSSON_LIBS) \
 		$(DEVMAPPER_LIBS) \
 		$(LIBXML_LIBS) \
 		$(SSH2_LIBS) \
@@ -689,7 +690,6 @@ libvirt_setuid_rpc_client_la_SOURCES = \
 		util/virhashcode.c \
 		util/virhostcpu.c \
 		util/virjson.c \
-		util/virjsoncompat.c \
 		util/virlog.c \
 		util/virobject.c \
 		util/virpidfile.c \
@@ -961,8 +961,6 @@ libvirt_nss_la_SOURCES = \
 		util/virhashcode.h \
 		util/virjson.c \
 		util/virjson.h \
-		util/virjsoncompat.c \
-		util/virjsoncompat.h \
 		util/virkmod.c \
 		util/virkmod.h \
 		util/virlease.c \
@@ -1001,6 +999,10 @@ libvirt_nss_la_CFLAGS = \
 libvirt_nss_la_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(NULL)
+
+libvirt_nss_la_LIBADD = \
+		$(JANSSON_LIBS) \
+		$(NULL)
 endif WITH_NSS
 
 

src/util/Makefile.inc.am

@@ -86,8 +86,6 @@ UTIL_SOURCES = \
 	util/viriscsi.h \
 	util/virjson.c \
 	util/virjson.h \
-	util/virjsoncompat.c \
-	util/virjsoncompat.h \
 	util/virkeycode.c \
 	util/virkeycode.h \
 	util/virkeyfile.c \
@@ -266,6 +264,7 @@ libvirt_util_la_CFLAGS = \
 	$(NULL)
 libvirt_util_la_LIBADD = \
 	$(CAPNG_LIBS) \
+	$(JANSSON_LIBS) \
 	$(LIBNL_LIBS) \
 	$(THREAD_LIBS) \
 	$(AUDIT_LIBS) \

src/util/virjson.c

@@ -1437,8 +1437,7 @@ virJSONValueCopy(const virJSONValue *in)
 
 
 #if WITH_JANSSON
-
-# include "virjsoncompat.h"
+# include <jansson.h>
 
 static virJSONValuePtr
 virJSONValueFromJansson(json_t *json)
@@ -1525,9 +1524,6 @@ virJSONValueFromString(const char *jsonstring)
     size_t flags = JSON_REJECT_DUPLICATES |
                    JSON_DECODE_ANY;
 
-    if (virJSONInitialize() < 0)
-        return NULL;
-
     if (!(json = json_loads(jsonstring, flags, &error))) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("failed to parse JSON %d:%d: %s"),
@@ -1634,9 +1630,6 @@ virJSONValueToString(virJSONValuePtr object,
     json_t *json;
     char *str = NULL;
 
-    if (virJSONInitialize() < 0)
-        return NULL;
-
     if (pretty)
         flags |= JSON_INDENT(2);
     else

src/util/virjsoncompat.c

-/*
- * virjsoncompat.c: JSON object parsing/formatting
- *
- * Copyright (C) 2018 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 "virthread.h"
-#include "virerror.h"
-#define VIR_JSON_COMPAT_IMPL
-#include "virjsoncompat.h"
-
-#define VIR_FROM_THIS VIR_FROM_NONE
-
-#if WITH_JANSSON
-
-# include <dlfcn.h>
-
-json_t *(*json_array_ptr)(void);
-int (*json_array_append_new_ptr)(json_t *array, json_t *value);
-json_t *(*json_array_get_ptr)(const json_t *array, size_t index);
-size_t (*json_array_size_ptr)(const json_t *array);
-void (*json_delete_ptr)(json_t *json);
-char *(*json_dumps_ptr)(const json_t *json, size_t flags);
-json_t *(*json_false_ptr)(void);
-json_t *(*json_integer_ptr)(json_int_t value);
-json_int_t (*json_integer_value_ptr)(const json_t *integer);
-json_t *(*json_loads_ptr)(const char *input, size_t flags, json_error_t *error);
-json_t *(*json_null_ptr)(void);
-json_t *(*json_object_ptr)(void);
-void *(*json_object_iter_ptr)(json_t *object);
-const char *(*json_object_iter_key_ptr)(void *iter);
-void *(*json_object_iter_next_ptr)(json_t *object, void *iter);
-json_t *(*json_object_iter_value_ptr)(void *iter);
-void *(*json_object_key_to_iter_ptr)(const char *key);
-int (*json_object_set_new_ptr)(json_t *object, const char *key, json_t *value);
-json_t *(*json_real_ptr)(double value);
-double (*json_real_value_ptr)(const json_t *real);
-json_t *(*json_string_ptr)(const char *value);
-const char *(*json_string_value_ptr)(const json_t *string);
-json_t *(*json_true_ptr)(void);
-
-
-static int
-virJSONJanssonOnceInit(void)
-{
-    void *handle = dlopen("libjansson.so.4", RTLD_LAZY|RTLD_LOCAL|RTLD_NODELETE);
-    if (!handle) {
-        virReportError(VIR_ERR_NO_SUPPORT,
-                       _("libjansson.so.4 JSON library not available: %s"), dlerror());
-        return -1;
-    }
-
-# define LOAD(name) \
-    do { \
-        if (!(name ## _ptr = dlsym(handle, #name))) { \
-            virReportError(VIR_ERR_NO_SUPPORT, \
-                           _("missing symbol '%s' in libjansson.so.4: %s"), #name, dlerror()); \
-            return -1; \
-        } \
-    } while (0)
-
-    LOAD(json_array);
-    LOAD(json_array_append_new);
-    LOAD(json_array_get);
-    LOAD(json_array_size);
-    LOAD(json_delete);
-    LOAD(json_dumps);
-    LOAD(json_false);
-    LOAD(json_integer);
-    LOAD(json_integer_value);
-    LOAD(json_loads);
-    LOAD(json_null);
-    LOAD(json_object);
-    LOAD(json_object_iter);
-    LOAD(json_object_iter_key);
-    LOAD(json_object_iter_next);
-    LOAD(json_object_iter_value);
-    LOAD(json_object_key_to_iter);
-    LOAD(json_object_set_new);
-    LOAD(json_real);
-    LOAD(json_real_value);
-    LOAD(json_string);
-    LOAD(json_string_value);
-    LOAD(json_true);
-
-    return 0;
-}
-
-VIR_ONCE_GLOBAL_INIT(virJSONJansson);
-
-int
-virJSONInitialize(void)
-{
-    return virJSONJanssonInitialize();
-}
-
-json_t *
-json_array_impl(void)
-{
-    return json_array_ptr();
-}
-
-
-int
-json_array_append_new_impl(json_t *array, json_t *value)
-{
-    return json_array_append_new_ptr(array, value);
-}
-
-
-json_t *
-json_array_get_impl(const json_t *array, size_t index)
-{
-    return json_array_get_ptr(array, index);
-}
-
-
-size_t
-json_array_size_impl(const json_t *array)
-{
-    return json_array_size_ptr(array);
-}
-
-
-void
-json_delete_impl(json_t *json)
-{
-    return json_delete_ptr(json);
-}
-
-
-char *
-json_dumps_impl(const json_t *json, size_t flags)
-{
-    return json_dumps_ptr(json, flags);
-}
-
-
-json_t *
-json_false_impl(void)
-{
-    return json_false_ptr();
-}
-
-
-json_t *
-json_integer_impl(json_int_t value)
-{
-    return json_integer_ptr(value);
-}
-
-
-json_int_t
-json_integer_value_impl(const json_t *integer)
-{
-    return json_integer_value_ptr(integer);
-}
-
-
-json_t *
-json_loads_impl(const char *input, size_t flags, json_error_t *error)
-{
-    return json_loads_ptr(input, flags, error);
-}
-
-
-json_t *
-json_null_impl(void)
-{
-    return json_null_ptr();
-}
-
-
-json_t *
-json_object_impl(void)
-{
-    return json_object_ptr();
-}
-
-
-void *
-json_object_iter_impl(json_t *object)
-{
-    return json_object_iter_ptr(object);
-}
-
-
-const char *
-json_object_iter_key_impl(void *iter)
-{
-    return json_object_iter_key_ptr(iter);
-}
-
-
-void *
-json_object_iter_next_impl(json_t *object, void *iter)
-{
-    return json_object_iter_next_ptr(object, iter);
-}
-
-
-json_t *
-json_object_iter_value_impl(void *iter)
-{
-    return json_object_iter_value_ptr(iter);
-}
-
-
-void *
-json_object_key_to_iter_impl(const char *key)
-{
-    return json_object_key_to_iter_ptr(key);
-}
-
-
-int
-json_object_set_new_impl(json_t *object, const char *key, json_t *value)
-{
-    return json_object_set_new_ptr(object, key, value);
-}
-
-
-json_t *
-json_real_impl(double value)
-{
-    return json_real_ptr(value);
-}
-
-
-double
-json_real_value_impl(const json_t *real)
-{
-    return json_real_value_ptr(real);
-}
-
-
-json_t *
-json_string_impl(const char *value)
-{
-    return json_string_ptr(value);
-}
-
-
-const char *
-json_string_value_impl(const json_t *string)
-{
-    return json_string_value_ptr(string);
-}
-
-
-json_t *
-json_true_impl(void)
-{
-    return json_true_ptr();
-}
-
-#endif /* WITH_JANSSON */

src/util/virjsoncompat.h

-/*
- * virjsoncompat.h: JSON object parsing/formatting
- *
- * Copyright (C) 2018 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/>.
- *
- */
-
-
-#ifndef __VIR_JSON_COMPAT_H_
-# define __VIR_JSON_COMPAT_H_
-
-# if WITH_JANSSON
-#  ifndef VIR_JSON_COMPAT_IMPL
-
-#   define json_array json_array_impl
-#   define json_array_append_new json_array_append_new_impl
-#   define json_array_get json_array_get_impl
-#   define json_array_size json_array_size_impl
-#   define json_delete json_delete_impl
-#   define json_dumps json_dumps_impl
-#   define json_false json_false_impl
-#   define json_integer json_integer_impl
-#   define json_integer_value json_integer_value_impl
-#   define json_loads json_loads_impl
-#   define json_null json_null_impl
-#   define json_object json_object_impl
-#   define json_object_iter json_object_iter_impl
-#   define json_object_iter_key json_object_iter_key_impl
-#   define json_object_iter_next json_object_iter_next_impl
-#   define json_object_iter_value json_object_iter_value_impl
-#   define json_object_key_to_iter json_object_key_to_iter_impl
-#   define json_object_set_new json_object_set_new_impl
-#   define json_real json_real_impl
-#   define json_real_value json_real_value_impl
-#   define json_string json_string_impl
-#   define json_string_value json_string_value_impl
-#   define json_true json_true_impl
-
-#  endif /* ! VIR_JSON_COMPAT_IMPL */
-
-#  include <jansson.h>
-
-#  ifdef VIR_JSON_COMPAT_IMPL
-
-json_t *json_array_impl(void);
-int json_array_append_new_impl(json_t *array, json_t *value);
-json_t *json_array_get_impl(const json_t *array, size_t index);
-size_t json_array_size_impl(const json_t *array);
-void json_delete_impl(json_t *json);
-char *json_dumps_impl(const json_t *json, size_t flags);
-json_t *json_false_impl(void);
-json_t *json_integer_impl(json_int_t value);
-json_int_t json_integer_value_impl(const json_t *integer);
-json_t *json_loads_impl(const char *input, size_t flags, json_error_t *error);
-json_t *json_null_impl(void);
-json_t *json_object_impl(void);
-void *json_object_iter_impl(json_t *object);
-const char *json_object_iter_key_impl(void *iter);
-void *json_object_iter_next_impl(json_t *object, void *iter);
-json_t *json_object_iter_value_impl(void *iter);
-void *json_object_key_to_iter_impl(const char *key);
-int json_object_set_new_impl(json_t *object, const char *key, json_t *value);
-json_t *json_real_impl(double value);
-double json_real_value_impl(const json_t *real);
-json_t *json_string_impl(const char *value);
-const char *json_string_value_impl(const json_t *string);
-json_t *json_true_impl(void);
-
-#  endif /* VIR_JSON_COMPAT_IMPL */
-# endif /* WITH_JANSSON */
-
-int virJSONInitialize(void);
-
-#endif /* __VIR_JSON_COMPAT_H_ */