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qemu/tests/test-keyval.c
Markus Armbruster f740048323 keyval: Restrict key components to valid QAPI names 
Until now, key components are separated by '.'.  This leaves little
room for evolving the syntax, and is incompatible with the __RFQDN_
prefix convention for downstream extensions.

Since key components will be commonly used as QAPI member names by the
QObject input visitor, we can just as well borrow the QAPI naming
rules here: letters, digits, hyphen and period starting with a letter,
with an optional __RFQDN_ prefix for downstream extensions.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <1488317230-26248-20-git-send-email-armbru@redhat.com>
2017-03-07 16:07:47 +01:00

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/*
* Unit tests for parsing of KEY=VALUE,... strings
*
* Copyright (C) 2017 Red Hat Inc.
*
* Authors:
* Markus Armbruster <armbru@redhat.com>,
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/cutils.h"
#include "qemu/option.h"
static void test_keyval_parse(void)
{
Error *err = NULL;
QDict *qdict, *sub_qdict;
char long_key[129];
char *params;
/* Nothing */
qdict = keyval_parse("", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 0);
QDECREF(qdict);
/* Empty key (qemu_opts_parse() accepts this) */
qdict = keyval_parse("=val", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Empty key fragment */
qdict = keyval_parse(".", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
qdict = keyval_parse("key.", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Invalid non-empty key (qemu_opts_parse() doesn't care) */
qdict = keyval_parse("7up=val", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Overlong key */
memset(long_key, 'a', 127);
long_key[127] = 'z';
long_key[128] = 0;
params = g_strdup_printf("k.%s=v", long_key);
qdict = keyval_parse(params + 2, NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Overlong key fragment */
qdict = keyval_parse(params, NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
g_free(params);
/* Long key (qemu_opts_parse() accepts and truncates silently) */
params = g_strdup_printf("k.%s=v", long_key + 1);
qdict = keyval_parse(params + 2, NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, long_key + 1), ==, "v");
QDECREF(qdict);
/* Long key fragment */
qdict = keyval_parse(params, NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
sub_qdict = qdict_get_qdict(qdict, "k");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(sub_qdict, long_key + 1), ==, "v");
QDECREF(qdict);
g_free(params);
/* Crap after valid key */
qdict = keyval_parse("key[0]=val", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Multiple keys, last one wins */
qdict = keyval_parse("a=1,b=2,,x,a=3", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 2);
g_assert_cmpstr(qdict_get_try_str(qdict, "a"), ==, "3");
g_assert_cmpstr(qdict_get_try_str(qdict, "b"), ==, "2,x");
QDECREF(qdict);
/* Even when it doesn't in qemu_opts_parse() */
qdict = keyval_parse("id=foo,id=bar", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "id"), ==, "bar");
QDECREF(qdict);
/* Dotted keys */
qdict = keyval_parse("a.b.c=1,a.b.c=2,d=3", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 2);
sub_qdict = qdict_get_qdict(qdict, "a");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
sub_qdict = qdict_get_qdict(sub_qdict, "b");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(sub_qdict, "c"), ==, "2");
g_assert_cmpstr(qdict_get_try_str(qdict, "d"), ==, "3");
QDECREF(qdict);
/* Inconsistent dotted keys */
qdict = keyval_parse("a.b=1,a=2", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
qdict = keyval_parse("a.b=1,a.b.c=2", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Trailing comma is ignored */
qdict = keyval_parse("x=y,", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "x"), ==, "y");
QDECREF(qdict);
/* Except when it isn't */
qdict = keyval_parse(",", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Value containing ,id= not misinterpreted as qemu_opts_parse() does */
qdict = keyval_parse("x=,,id=bar", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "x"), ==, ",id=bar");
QDECREF(qdict);
/* Anti-social ID is left to caller (qemu_opts_parse() rejects it) */
qdict = keyval_parse("id=666", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(qdict, "id"), ==, "666");
QDECREF(qdict);
/* Implied value not supported (unlike qemu_opts_parse()) */
qdict = keyval_parse("an,noaus,noaus=", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Implied value, key "no" (qemu_opts_parse(): negated empty key) */
qdict = keyval_parse("no", NULL, &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Implied key */
qdict = keyval_parse("an,aus=off,noaus=", "implied", &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 3);
g_assert_cmpstr(qdict_get_try_str(qdict, "implied"), ==, "an");
g_assert_cmpstr(qdict_get_try_str(qdict, "aus"), ==, "off");
g_assert_cmpstr(qdict_get_try_str(qdict, "noaus"), ==, "");
QDECREF(qdict);
/* Implied dotted key */
qdict = keyval_parse("val", "eins.zwei", &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 1);
sub_qdict = qdict_get_qdict(qdict, "eins");
g_assert(sub_qdict);
g_assert_cmpuint(qdict_size(sub_qdict), ==, 1);
g_assert_cmpstr(qdict_get_try_str(sub_qdict, "zwei"), ==, "val");
QDECREF(qdict);
/* Implied key with empty value (qemu_opts_parse() accepts this) */
qdict = keyval_parse(",", "implied", &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Likewise (qemu_opts_parse(): implied key with comma value) */
qdict = keyval_parse(",,,a=1", "implied", &err);
error_free_or_abort(&err);
g_assert(!qdict);
/* Empty key is not an implied key */
qdict = keyval_parse("=val", "implied", &err);
error_free_or_abort(&err);
g_assert(!qdict);
}
static void test_keyval_visit_bool(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
bool b;
qdict = keyval_parse("bool1=on,bool2=off", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_bool(v, "bool1", &b, &error_abort);
g_assert(b);
visit_type_bool(v, "bool2", &b, &error_abort);
g_assert(!b);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
qdict = keyval_parse("bool1=offer", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_bool(v, "bool1", &b, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_number(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
uint64_t u;
/* Lower limit zero */
qdict = keyval_parse("number1=0", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &error_abort);
g_assert_cmpuint(u, ==, 0);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Upper limit 2^64-1 */
qdict = keyval_parse("number1=18446744073709551615,number2=-1",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &error_abort);
g_assert_cmphex(u, ==, UINT64_MAX);
visit_type_uint64(v, "number2", &u, &error_abort);
g_assert_cmphex(u, ==, UINT64_MAX);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Above upper limit */
qdict = keyval_parse("number1=18446744073709551616",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Below lower limit */
qdict = keyval_parse("number1=-18446744073709551616",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Hex and octal */
qdict = keyval_parse("number1=0x2a,number2=052",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &error_abort);
g_assert_cmpuint(u, ==, 42);
visit_type_uint64(v, "number2", &u, &error_abort);
g_assert_cmpuint(u, ==, 42);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Trailing crap */
qdict = keyval_parse("number1=3.14,number2=08",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_uint64(v, "number1", &u, &err);
error_free_or_abort(&err);
visit_type_uint64(v, "number2", &u, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_size(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
uint64_t sz;
/* Lower limit zero */
qdict = keyval_parse("sz1=0", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmpuint(sz, ==, 0);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Note: precision is 53 bits since we're parsing with strtod() */
/* Around limit of precision: 2^53-1, 2^53, 2^53+1 */
qdict = keyval_parse("sz1=9007199254740991,"
"sz2=9007199254740992,"
"sz3=9007199254740993",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x1fffffffffffff);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x20000000000000);
visit_type_size(v, "sz3", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x20000000000000);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Close to signed upper limit 0x7ffffffffffffc00 (53 msbs set) */
qdict = keyval_parse("sz1=9223372036854774784," /* 7ffffffffffffc00 */
"sz2=9223372036854775295", /* 7ffffffffffffdff */
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x7ffffffffffffc00);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0x7ffffffffffffc00);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Close to actual upper limit 0xfffffffffffff800 (53 msbs set) */
qdict = keyval_parse("sz1=18446744073709549568," /* fffffffffffff800 */
"sz2=18446744073709550591", /* fffffffffffffbff */
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0xfffffffffffff800);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmphex(sz, ==, 0xfffffffffffff800);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Beyond limits */
qdict = keyval_parse("sz1=-1,"
"sz2=18446744073709550592", /* fffffffffffffc00 */
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &err);
error_free_or_abort(&err);
visit_type_size(v, "sz2", &sz, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Suffixes */
qdict = keyval_parse("sz1=8b,sz2=1.5k,sz3=2M,sz4=0.1G,sz5=16777215T",
NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &error_abort);
g_assert_cmpuint(sz, ==, 8);
visit_type_size(v, "sz2", &sz, &error_abort);
g_assert_cmpuint(sz, ==, 1536);
visit_type_size(v, "sz3", &sz, &error_abort);
g_assert_cmphex(sz, ==, 2 * M_BYTE);
visit_type_size(v, "sz4", &sz, &error_abort);
g_assert_cmphex(sz, ==, G_BYTE / 10);
visit_type_size(v, "sz5", &sz, &error_abort);
g_assert_cmphex(sz, ==, 16777215 * T_BYTE);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
/* Beyond limit with suffix */
qdict = keyval_parse("sz1=16777216T", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
/* Trailing crap */
qdict = keyval_parse("sz1=16E,sz2=16Gi", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_type_size(v, "sz1", &sz, &err);
error_free_or_abort(&err);
visit_type_size(v, "sz2", &sz, &err);
error_free_or_abort(&err);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_dict(void)
{
Error *err = NULL;
Visitor *v;
QDict *qdict;
int64_t i;
qdict = keyval_parse("a.b.c=1,a.b.c=2,d=3", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_start_struct(v, "a", NULL, 0, &error_abort);
visit_start_struct(v, "b", NULL, 0, &error_abort);
visit_type_int(v, "c", &i, &error_abort);
g_assert_cmpint(i, ==, 2);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_type_int(v, "d", &i, &error_abort);
g_assert_cmpint(i, ==, 3);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
qdict = keyval_parse("a.b=", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_start_struct(v, "a", NULL, 0, &error_abort);
visit_type_int(v, "c", &i, &err); /* a.c missing */
error_free_or_abort(&err);
visit_check_struct(v, &err);
error_free_or_abort(&err); /* a.b unexpected */
visit_end_struct(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
}
static void test_keyval_visit_optional(void)
{
Visitor *v;
QDict *qdict;
bool present;
int64_t i;
qdict = keyval_parse("a.b=1", NULL, &error_abort);
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
QDECREF(qdict);
visit_start_struct(v, NULL, NULL, 0, &error_abort);
visit_optional(v, "b", &present);
g_assert(!present); /* b missing */
visit_optional(v, "a", &present);
g_assert(present); /* a present */
visit_start_struct(v, "a", NULL, 0, &error_abort);
visit_optional(v, "b", &present);
g_assert(present); /* a.b present */
visit_type_int(v, "b", &i, &error_abort);
g_assert_cmpint(i, ==, 1);
visit_optional(v, "a", &present);
g_assert(!present); /* a.a missing */
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_check_struct(v, &error_abort);
visit_end_struct(v, NULL);
visit_free(v);
}
int main(int argc, char *argv[])
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/keyval/keyval_parse", test_keyval_parse);
g_test_add_func("/keyval/visit/bool", test_keyval_visit_bool);
g_test_add_func("/keyval/visit/number", test_keyval_visit_number);
g_test_add_func("/keyval/visit/size", test_keyval_visit_size);
g_test_add_func("/keyval/visit/dict", test_keyval_visit_dict);
g_test_add_func("/keyval/visit/optional", test_keyval_visit_optional);
g_test_run();
return 0;
}
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