/usr/src/openvswitch-1.4.0/lib/ovsdb-parser.c is in openvswitch-datapath-dkms 1.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | /* Copyright (c) 2009, 2011 Nicira Networks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include "ovsdb-parser.h"
#include <ctype.h>
#include <stdarg.h>
#include "ovsdb-error.h"
void
ovsdb_parser_init(struct ovsdb_parser *parser, const struct json *json,
const char *name, ...)
{
va_list args;
va_start(args, name);
parser->name = xvasprintf(name, args);
va_end(args);
sset_init(&parser->used);
parser->error = NULL;
parser->json = (json && json->type == JSON_OBJECT ? json : NULL);
if (!parser->json) {
ovsdb_parser_raise_error(parser, "Object expected.");
}
}
bool
ovsdb_parser_is_id(const char *string)
{
unsigned char c;
c = *string;
if (!isalpha(c) && c != '_') {
return false;
}
for (;;) {
c = *++string;
if (c == '\0') {
return true;
} else if (!isalpha(c) && !isdigit(c) && c != '_') {
return false;
}
}
}
const struct json *
ovsdb_parser_member(struct ovsdb_parser *parser, const char *name,
enum ovsdb_parser_types types)
{
struct json *value;
if (!parser->json) {
return NULL;
}
value = shash_find_data(json_object(parser->json), name);
if (!value) {
if (!(types & OP_OPTIONAL)) {
ovsdb_parser_raise_error(parser,
"Required '%s' member is missing.", name);
}
return NULL;
}
if (((int) value->type >= 0 && value->type < JSON_N_TYPES
&& types & (1u << value->type))
|| (types & OP_ID && value->type == JSON_STRING
&& ovsdb_parser_is_id(value->u.string)))
{
sset_add(&parser->used, name);
return value;
} else {
ovsdb_parser_raise_error(parser, "Type mismatch for member '%s'.",
name);
return NULL;
}
}
void
ovsdb_parser_raise_error(struct ovsdb_parser *parser, const char *format, ...)
{
if (!parser->error) {
struct ovsdb_error *error;
va_list args;
char *message;
va_start(args, format);
message = xvasprintf(format, args);
va_end(args);
error = ovsdb_syntax_error(parser->json, NULL, "Parsing %s failed: %s",
parser->name, message);
free(message);
parser->error = error;
}
}
struct ovsdb_error *
ovsdb_parser_get_error(const struct ovsdb_parser *parser)
{
return parser->error ? ovsdb_error_clone(parser->error) : NULL;
}
bool
ovsdb_parser_has_error(const struct ovsdb_parser *parser)
{
return parser->error != NULL;
}
struct ovsdb_error *
ovsdb_parser_finish(struct ovsdb_parser *parser)
{
if (!parser->error) {
const struct shash *object = json_object(parser->json);
size_t n_unused;
n_unused = shash_count(object) - sset_count(&parser->used);
if (n_unused) {
struct shash_node *node;
SHASH_FOR_EACH (node, object) {
if (!sset_contains(&parser->used, node->name)) {
if (n_unused > 1) {
ovsdb_parser_raise_error(
parser,
"Member '%s' and %zu other member%s "
"are present but not allowed here.",
node->name, n_unused - 1, n_unused > 2 ? "s" : "");
} else {
ovsdb_parser_raise_error(
parser,
"Member '%s' is present but not allowed here.",
node->name);
}
break;
}
}
}
}
free(parser->name);
sset_destroy(&parser->used);
return parser->error;
}
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