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bencodetest.c
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bencodetest.c
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#include <bencodetools/bencode.h>
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
static void test_encode(const struct bencode *b, const char *s, size_t len)
{
size_t encoded_len = 0;
char *data = ben_encode(&encoded_len, b);
assert(encoded_len <= len);
assert(memcmp(data, s, encoded_len) == 0);
free(data);
}
static void booltest(const char *s, size_t len, int expected, int experror)
{
struct bencode_bool *b;
size_t off = 0;
int error;
b = (struct bencode_bool *) ben_decode2(s, len, &off, &error);
if (experror != error) {
fprintf(stderr, "%s/%zd should got code %d but got %d\n", s, len, experror, error);
exit(1);
}
if (experror == BEN_OK && b == NULL) {
fprintf(stderr, "%s/%zd should have succeeded\n", s, len);
exit(1);
}
if (experror == BEN_OK && b->b != expected) {
fprintf(stderr, "%s/%zd should have value %d\n", s, len, expected);
exit(1);
}
if (experror != BEN_OK && b != NULL) {
fprintf(stderr, "%s/%zd should have failed\n", s, len);
exit(1);
}
if (experror == BEN_OK)
test_encode((struct bencode *) b, s, len);
ben_free((struct bencode *) b);
}
static void inttest(const char *s, size_t len, long long expected, int experror)
{
struct bencode_int *b;
size_t off = 0;
int error;
b = (struct bencode_int *) ben_decode2(s, len, &off, &error);
if (error != experror) {
fprintf(stderr, "%s/%zd should get code %d but got %d\n", s, len, experror, error);
exit(1);
}
if (experror == BEN_OK && b == NULL) {
fprintf(stderr, "%s/%zd should have succeeded\n", s, len);
exit(1);
}
if (experror == BEN_OK && b->ll != expected) {
fprintf(stderr, "%s/%zd should have value %lld\n", s, len, expected);
exit(1);
}
if (experror != BEN_OK && b != NULL) {
fprintf(stderr, "%s/%zd should have failed\n", s, len);
exit(1);
}
if (experror == BEN_OK)
test_encode((struct bencode *) b, s, len);
ben_free((struct bencode *) b);
}
static void strtest(const char *s, size_t len, const char *expected, int experror)
{
struct bencode_str *b;
size_t off = 0;
int error;
b = (struct bencode_str *) ben_decode2(s, len, &off, &error);
if (error != experror) {
fprintf(stderr, "%s/%zd should get code %d but got %d\n", s, len, experror, error);
exit(1);
}
if (experror == BEN_OK && b == NULL) {
fprintf(stderr, "%s/%zd should have succeeded\n", s, len);
exit(1);
}
if (experror == BEN_OK && memcmp(b->s, expected, strlen(expected)) != 0) {
fprintf(stderr, "%s/%zd should have value %s\n", s, len, expected);
exit(1);
}
if (experror != BEN_OK && b != NULL) {
fprintf(stderr, "%s/%zd should have failed\n", s, len);
exit(1);
}
if (experror == BEN_OK)
test_encode((struct bencode *) b, s, len);
ben_free((struct bencode *) b);
}
static void listtest(const char *s, size_t len, size_t expected, int experror)
{
struct bencode_list *b;
size_t off = 0;
int error;
b = (struct bencode_list *) ben_decode2(s, len, &off, &error);
if (error != experror) {
fprintf(stderr, "%s/%zd should get code %d but got %d\n", s, len, experror, error);
exit(1);
}
if (experror == BEN_OK && b == NULL) {
fprintf(stderr, "%s/%zd should have succeeded\n", s, len);
exit(1);
}
if (experror == BEN_OK && b->n != expected) {
fprintf(stderr, "%s/%zd should have %zu entries\n", s, len, expected);
exit(1);
}
if (experror != BEN_OK && b != NULL) {
fprintf(stderr, "%s/%zd should have failed\n", s, len);
exit(1);
}
if (experror == BEN_OK)
test_encode((struct bencode *) b, s, len);
ben_free((struct bencode *) b);
}
static void dicttest(const char *s, size_t len, size_t expected, int experror)
{
struct bencode_dict *b;
size_t off = 0;
int error;
b = (struct bencode_dict *) ben_decode2(s, len, &off, &error);
if (error != experror) {
fprintf(stderr, "%s/%zd should get code %d but got %d\n", s, len, experror, error);
exit(1);
}
if (experror == BEN_OK && b == NULL) {
fprintf(stderr, "%s/%zd should have succeeded\n", s, len);
exit(1);
}
if (experror == BEN_OK && b->n != expected) {
fprintf(stderr, "%s/%zd should have %zu entries\n", s, len, expected);
exit(1);
}
if (experror != BEN_OK && b != NULL) {
fprintf(stderr, "%s/%zd should have failed\n", s, len);
exit(1);
}
if (experror == BEN_OK)
test_encode((struct bencode *) b, s, len);
ben_free((struct bencode *) b);
}
static void print_tests(void)
{
struct test {
char *encoded;
size_t len;
char *expected;
};
const struct test table[] = {
{"d3:foo3:bare", -1, "{'foo': 'bar'}"},
{"di0e0:i1e0:e", -1, "{0: '', 1: ''}"},
{"di0eli1eei1e0:e", -1, "{0: [1], 1: ''}"},
{"di0eli1ei2eei1e0:e", -1, "{0: [1, 2], 1: ''}"},
{"1:\x00", 3, "'\\x00'"},
{"1:\x01", 3, "'\\x01'"},
{"1:\a", 3, "'\\x07'"},
{"1:\b", 3, "'\\x08'"},
{"1:\t", 3, "'\\x09'"},
{"1:\n", 3, "'\\x0a'"},
{"1:\r", 3, "'\\x0d'"},
{"1: ", 3, "' '"},
{"1:0", 3, "'0'"},
{"1:A", 3, "'A'"},
{"1:a", 3, "'a'"},
{"1:\\", 3, "'\\\\'"},
{"1:'", 3, "'\\''"},
{"1:\x7f", 3, "'\\x7f'"},
{"1:\xff", 3, "'\\xff'"},
{"b0", -1, "False"},
{"b1", -1, "True"},
{"i0e", -1, "0"},
{"i-1e", -1, "-1"},
{"0:", -1, "''"},
{"3:foo", -1, "'foo'"},
{"le", -1, "[]"},
{"li0ee", -1, "[0]"},
{"li0ei1ee", -1, "[0, 1]"},
{NULL, 0, NULL}};
size_t i;
char *printed;
struct bencode *b;
for (i = 0; table[i].encoded != NULL; i++) {
const char *encoded = table[i].encoded;
size_t len = table[i].len;
const char *expected = table[i].expected;
if (len == -1)
len = strlen(encoded);
b = ben_decode(encoded, len);
if (b == NULL) {
fprintf(stderr, "Failed to decode: %s\n", encoded);
exit(1);
}
printed = ben_print(b);
if (printed == NULL) {
fprintf(stderr, "Failed to print: %s\n", expected);
exit(1);
}
if (strcmp(printed, expected) != 0) {
fprintf(stderr, "Invalid print output: %s vs %s\n", printed, expected);
exit(1);
}
ben_free(b);
free(printed);
}
}
static size_t test_encoded_size(struct bencode *b)
{
size_t s = ben_encoded_size(b);
ben_free(b);
return s;
}
static void encoded_size_tests(void)
{
struct bencode *key;
struct bencode *value;
struct bencode *b;
struct bencode *d;
struct bencode *l;
char data[4096];
size_t s;
size_t pos;
size_t n;
assert(test_encoded_size(ben_bool(0)) == 2);
assert(test_encoded_size(ben_bool(1)) == 2);
assert(test_encoded_size(ben_int(-10)) == 5);
assert(test_encoded_size(ben_int(-1)) == 4);
assert(test_encoded_size(ben_int(0)) == 3);
assert(test_encoded_size(ben_int(1)) == 3);
assert(test_encoded_size(ben_int(10)) == 4);
assert(test_encoded_size(ben_str("marklar")) == 9);
l = ben_list();
assert(ben_encoded_size(l) == 2);
ben_list_append(l, ben_int(0));
assert(ben_encoded_size(l) == 5);
ben_list_append(l, ben_str("marklar"));
assert(ben_encoded_size(l) == 14);
s = 0;
n = 0;
ben_list_for_each(b, pos, l) {
s += ben_encoded_size(b);
n++;
}
assert(s == 12);
assert(n == 2);
ben_free(l);
l = NULL;
d = ben_dict();
assert(ben_encoded_size(d) == 2);
ben_dict_set(d, ben_int(1), ben_str(""));
ben_dict_set(d, ben_int(0), ben_str(""));
ben_dict_set(d, ben_int(0), ben_str(""));
assert(ben_dict_len(d) == 2);
s = ben_encode2(data, sizeof data, d);
assert(s == 12);
assert(memcmp(data, "di0e0:i1e0:e", s) == 0);
s = 0;
n = 0;
ben_dict_for_each(key, value, pos, d) {
s += ben_encoded_size(key);
s += ben_encoded_size(value);
n++;
}
assert(s == 10);
assert(n == 2);
ben_free(d);
}
static void testvectors(const char **vec, int success)
{
while (*vec != NULL) {
struct bencode * b = ben_decode(*vec, strlen(*vec));
if (success && b == NULL) {
fprintf(stderr, "test vector %s failed. it should be valid.)\n", *vec);
exit(1);
}
if (!success && b != NULL) {
fprintf(stderr, "test vector %s failed. it should be invalid.\n", *vec);
exit(1);
}
if (success)
test_encode(b, *vec, strlen(*vec));
ben_free(b);
vec++;
}
}
static void misc_tests(void)
{
const char *validvectors[] = {
"i4e",
"i0e",
"i-10e",
"i9223372036854775807e",
"i-9223372036854775808e",
"0:",
"3:abc",
"10:1234567890",
"le",
"li1ei2ei3ee",
"ll5:Alice3:Bobeli2ei3eee",
"de",
"d3:agei25e4:eyes4:bluee",
"d8:spam.mp3d6:author5:Alice6:lengthi100000eee",
"b0",
"b1",
"lb1i2ee",
"li2eb0e",
"l0:0:0:e",
"l3:asd2:xye",
"di1e0:e",
NULL
};
const char *invalidvectors[] = {
"0:0:",
"ie",
"i341foo382e",
"i 0e",
"i-0e",
"i123",
"",
"i6easd",
"35208734823ljdahflajhdf",
"2:abfdjslhfld",
"02:xy",
"d",
"i",
"l",
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
"leanfdldjfh",
"relwjhrlewjh",
"defoobar",
"d3:fooe",
"d1:b0:1:a0:e", /* demand order for keys */
"di1e0:i0e0:e", /* demand order for keys */
"d1:a0:1:a0:e", /* disallow same two keys */
"di0e0:i0e0:e", /* disallow same two keys */
NULL
};
testvectors(validvectors, 1);
testvectors(invalidvectors, 0);
}
static void ben_dict_ordered_items_tests(void)
{
struct bencode *d;
struct bencode *key;
struct bencode *value;
struct bencode_keyvalue *pairs;
const char *keyvalues[] = {
"ka", "va", NULL,
"ka", "va", NULL,
"ka", "va", "kb", "vb", NULL,
"ka", "va", "kb", "vb", NULL,
"kb", "vb", "ka", "va", NULL,
"ka", "va", "kb", "vb", NULL,
"ka", "va", "kb", "vb", "kc", "vc", NULL,
"ka", "va", "kb", "vb", "kc", "vc", NULL,
"kb", "vb", "kc", "vc", "ka", "va", NULL,
"ka", "va", "kb", "vb", "kc", "vc", NULL,
NULL};
const size_t n = sizeof(keyvalues) / sizeof(keyvalues[0]);
size_t i;
size_t j;
size_t nkeys;
d = ben_dict();
pairs = ben_dict_ordered_items(d);
assert(pairs != NULL);
free(pairs);
ben_free(d);
i = 0;
while (keyvalues[i] != NULL) {
assert(i < n);
d = ben_dict();
nkeys = 0;
while ((i + 1) < n && keyvalues[i] != NULL) {
assert(keyvalues[i +1] != NULL);
ben_dict_set_str_by_str(d, keyvalues[i], keyvalues[i + 1]);
i += 2;
nkeys++;
}
assert(keyvalues[i] == NULL);
i++;
pairs = ben_dict_ordered_items(d);
j = 0;
while ((i + 1) < n && keyvalues[i] != NULL) {
assert(keyvalues[i + 1] != NULL);
key = pairs[j].key;
value = pairs[j].value;
assert(!strcmp(ben_str_val(key), keyvalues[i]));
assert(!strcmp(ben_str_val(value), keyvalues[i + 1]));
j++;
i += 2;
}
assert(keyvalues[i] == NULL);
i++;
assert(j == nkeys);
free(pairs);
pairs = NULL;
ben_free(d);
d = NULL;
}
assert(i == (n - 1));
}
static void dict_tests(void)
{
struct bencode *d = ben_dict();
struct bencode *i = ben_int(0);
struct bencode *key2 = ben_str("key2");
struct bencode *i2 = ben_int(0);
struct bencode *key;
struct bencode *value;
size_t pos;
assert(ben_dict_set_by_str(d, "key", i) == 0);
assert(ben_dict_get_by_str(d, "key") != NULL);
assert(ben_dict_set(d, key2, i2) == 0);
assert(ben_dict_get(d, key2) != NULL);
ben_free(d);
d = ben_dict();
assert(!ben_dict_set_str_by_str(d, "foo0", "a"));
assert(!ben_dict_set_str_by_str(d, "bar0", "b"));
assert(!ben_dict_set_str_by_str(d, "foo1", "c"));
ben_dict_for_each(key, value, pos, d) {
if (strncmp(ben_str_val(key), "foo", 3) != 0)
ben_free(ben_dict_pop_current(d, &pos));
}
assert(ben_dict_len(d) == 2);
ben_free(d);
}
static void dict_tests_2(void)
{
struct bencode *d;
int i;
long long llkey;
const int n = 50;
size_t nkeys;
size_t pos;
struct bencode *key;
struct bencode *value;
srandom(666);
d = ben_dict();
for (i = 0; i < n; i++) {
llkey = random();
assert(ben_dict_set(d, ben_int(llkey), ben_str("foo")) == 0);
}
nkeys = 0;
ben_dict_for_each(key, value, pos, d) {
nkeys++;
}
assert(nkeys > 0 && nkeys <= n);
ben_free(d);
d = ben_dict();
for (i = 0; i < n; i++) {
llkey = i;
assert(ben_dict_set(d, ben_int(llkey), ben_str("foo")) == 0);
}
nkeys = 0;
ben_dict_for_each(key, value, pos, d) {
nkeys++;
}
assert(nkeys == n);
for (i = 0; i < n; i++) {
value = ben_dict_get_by_int(d, i);
assert(value != NULL);
}
for (i = 0; i < n; i++) {
key = ben_int(i);
value = ben_dict_pop(d, key);
assert(value != NULL);
ben_free(key);
ben_free(value);
}
ben_free(d);
d = ben_dict();
for (i = 0; i < n; i++) {
char skey[32];
snprintf(skey, sizeof skey, "%d", i);
assert(ben_dict_set_by_str(d, skey, ben_str("foo")) == 0);
}
nkeys = 0;
ben_dict_for_each(key, value, pos, d) {
nkeys++;
}
assert(nkeys == n);
for (i = 0; i < n; i++) {
char skey[32];
snprintf(skey, sizeof skey, "%d", i);
value = ben_dict_get_by_str(d, skey);
assert(value != NULL);
}
for (i = 0; i < n; i++) {
char skey[32];
snprintf(skey, sizeof skey, "%d", i);
value = ben_dict_pop_by_str(d, skey);
assert(value != NULL);
ben_free(value);
}
ben_free(d);
}
static void list_tests(void)
{
struct bencode *l = ben_list();
struct bencode *value;
size_t pos;
assert(!ben_list_append_str(l, "foo0"));
assert(!ben_list_append_str(l, "bar0"));
assert(!ben_list_append_str(l, "foo1"));
assert(!ben_list_append_str(l, "foo2"));
value = ben_list_pop(l, 3);
assert(value != NULL);
ben_free(value);
assert(ben_list_len(l) == 3);
ben_list_for_each(value, pos, l) {
if (strncmp(ben_str_val(value), "foo", 3) != 0)
ben_free(ben_list_pop_current(l, &pos));
}
assert(ben_list_len(l) == 2);
ben_free(l);
}
static void decode_printed_tests(void)
{
struct {
char *s;
size_t l;
int e;
int line;
long long ival;
} testcases[] = {
/* string tests */
{.s = "''", .l = 2},
{.s = "''", .l = 2},
{.s = "'a'", .l = 3},
{.s = "'ab'", .l = 4},
{.s = "'\0'", .l = 3, .e = BEN_INVALID},
{.s = "'\\x00'", .l = 6},
{.s = "'\\\\'", .l = 4},
{.s = "'\\''", .l = 4},
{.s = "'\"'", .l = 3},
{.s = "\"'\"", .l = 3},
{.s = "'", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "\"", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "'a\"", .l = 3, .e = BEN_INSUFFICIENT},
/* list tests */
{.s = "[]", .l = 2},
{.s = "[,]", .l = 3, .e = BEN_INVALID},
{.s = "[", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "[1]", .l = 3},
{.s = "[1,]", .l = 4},
{.s = "[1,2]", .l = 5},
{.s = "[1,2,]", .l = 6},
{.s = "[ 1 , 2 , ]", .l = 11},
{.s = "['']", .l = 4},
{.s = "[''] ", .l = 5},
{.s = " ['']", .l = 5},
/* int tests */
{.s = "0", .l = 1, .ival = 0},
{.s = " 0", .l = 2, .ival = 0},
{.s = "0 ", .l = 2, .ival = 0},
{.s = "-0", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "-0", .l = 2, .ival = 0},
{.s = "-1", .l = 2, .ival = -1},
{.s = "1", .l = 1, .ival = 1},
{.s = "10", .l = 2, .ival = 10},
{.s = "0x0", .l = 3, .ival = 0},
{.s = "0x", .l = 2, .e = BEN_INSUFFICIENT},
{.s = "-0x1", .l = 4, .ival = -1},
{.s = "0xa", .l = 3, .ival = 10},
{.s = "0x10", .l = 4, .ival = 16},
{.s = "010", .l = 3, .ival = 8},
{.s = "001", .l = 3, .ival = 1},
{.s = "-010", .l = 4, .ival = -8},
{.s = "0xk", .l = 3, .e = BEN_INVALID},
{.s = "0x1000", .l = 6, .ival = 4096},
/* bool tests */
{.s = "T", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "Tr", .l = 2, .e = BEN_INSUFFICIENT},
{.s = "Tru", .l = 3, .e = BEN_INSUFFICIENT},
{.s = "True", .l = 4},
{.s = "True ", .l = 4},
{.s = "Truf", .l = 4, .e = BEN_INVALID},
{.s = "F", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "Fa", .l = 2, .e = BEN_INSUFFICIENT},
{.s = "Fal", .l = 3, .e = BEN_INSUFFICIENT},
{.s = "Fals", .l = 4, .e = BEN_INSUFFICIENT},
{.s = "False", .l = 5},
{.s = "False ", .l = 6},
{.s = "Falsf", .l = 5, .e = BEN_INVALID},
/* dict tests */
{.s = "{}", .l = 2},
{.s = "{1: 2}", .l = 6},
{.s = "{1: 2,}", .l = 7},
{.s = "{1: 2, 3: 4}", .l = 12},
{.s = "{ 1 : 2 , }", .l = 11},
{.s = "{", .l = 1, .e = BEN_INSUFFICIENT},
{.s = "{'", .l = 2, .e = BEN_INSUFFICIENT},
{.s = "{'a", .l = 3, .e = BEN_INSUFFICIENT},
{.s = "{'a'", .l = 4, .e = BEN_INSUFFICIENT},
{.s = "{'a':", .l = 5, .e = BEN_INSUFFICIENT},
{.s = "{'a': ", .l = 6, .e = BEN_INSUFFICIENT},
{.s = "{'a': '", .l = 7, .e = BEN_INSUFFICIENT},
{.s = "{'a': 'b", .l = 8, .e = BEN_INSUFFICIENT},
{.s = "{'a': 'b'", .l = 9, .e = BEN_INSUFFICIENT},
{.s = "{'a': 'b'}", .l = 10},
{.s = "{'a': []}", .l = 9},
{.s = "{'a': [1]}", .l = 10},
/* Lexical tests */
{.s = "{'a': 'b'\n}", .l = 11},
{.s = "{'a': 'b',\n}", .l = 12},
{.s = "{'a': 'b'\n'c'}", .l = 14, .e = BEN_INVALID, .line = 1},
{.s = "{'a': 'b'\n\n'c'}", .l = 15, .e = BEN_INVALID, .line = 2},
{.s = "#bar\n0x1000", .l = 11, .ival = 4096},
{.s = "0x1000#foo\n", .l = 11, .ival = 4096},
{.s = "#bar\nx0x1000", .l = 12, .ival = 4096, .e = BEN_INVALID, .line = 1},
{.s = NULL}};
int i;
struct bencode_error err;
size_t off;
struct bencode *b;
for (i = 0; testcases[i].s != NULL; i++) {
off = 0;
b = ben_decode_printed2(testcases[i].s, testcases[i].l, &off, &err);
if (testcases[i].e != err.error) {
fprintf(stderr, "Error in test case %s\n", testcases[i].s);
exit(1);
}
if (testcases[i].line > 0 &&
(err.error == BEN_OK || err.line != testcases[i].line)) {
fprintf(stderr, "Unexpected error line in test case %s. Expected line %d but got %d\n", testcases[i].s, testcases[i].line, err.line);
}
if (err.error == 0 && ben_is_int(b) &&
ben_int_val(b) != testcases[i].ival) {
fprintf(stderr, "Invalid result value in test case %s. Got %lld, but expected %lld\n", testcases[i].s, ben_int_val(b), testcases[i].ival);
exit(1);
}
ben_free(b);
b = NULL;
}
}
static void clone_tests(void)
{
struct bencode *b;
struct bencode *c;
b = ben_list();
ben_list_append(b, ben_int(1));
ben_list_append(b, ben_int(1));
c = ben_clone(b);
assert(ben_list_len(c) == 2);
ben_free(c);
c = ben_shared_clone(b);
assert(ben_list_len(c) == 2);
ben_free(c);
ben_free(b);
b = ben_dict();
ben_dict_set_str_by_str(b, "foo0", "a");
ben_dict_set_str_by_str(b, "foo1", "b");
ben_dict_set_str_by_str(b, "foo2", "c");
c = ben_clone(b);
assert(ben_dict_get_by_str(c, "foo0") != NULL);
assert(ben_dict_get_by_str(c, "foo1") != NULL);
assert(ben_dict_get_by_str(c, "foo2") != NULL);
assert(ben_dict_len(c) == 3);
ben_free(c);
c = ben_shared_clone(b);
assert(ben_dict_get_by_str(c, "foo0") != NULL);
assert(ben_dict_get_by_str(c, "foo1") != NULL);
assert(ben_dict_get_by_str(c, "foo2") != NULL);
assert(ben_dict_len(c) == 3);
ben_free(c);
ben_free(b);
b = ben_int(666);
c = ben_clone(b);
assert(ben_int_val(c) == ben_int_val(b));
ben_free(c);
ben_free(b);
b = ben_str("foo");
c = ben_clone(b);
if (strcmp(ben_str_val(b), ben_str_val(c)) != 0) {
fprintf(stderr, "Cloned strings are different\n");
abort();
}
ben_free(c);
ben_free(b);
b = ben_bool(1);
c = ben_clone(b);
assert(ben_bool_val(b) == ben_bool_val(c));
ben_free(c);
ben_free(b);
}
static void alloc_tests(void)
{
struct bencode *b;
struct bencode *list;
struct bencode *dict;
int i;
size_t oldalloc;
list = ben_list();
assert(ben_allocate(list, 1) == 0);
assert(ben_list_cast(list)->alloc == 1);
assert(ben_allocate(list, 64) == 0);
assert(ben_list_cast(list)->alloc == 64);
assert(ben_allocate(list, 1) == 0);
assert(ben_list_cast(list)->alloc == 1);
ben_free(list);
dict = ben_dict();
assert(!ben_dict_set_str_by_str(dict, "a", "0"));
assert(ben_allocate(dict, 1) == 0);
assert(ben_dict_cast(dict)->alloc == 1);
assert(ben_allocate(dict, 64) == 0);
assert(ben_dict_cast(dict)->alloc == 64);
assert(ben_allocate(dict, 1) == 0);
assert(ben_dict_cast(dict)->alloc == 1);
assert(ben_dict_len(dict) == 1);
ben_free(dict);
dict = ben_dict();
assert(!ben_dict_set_str_by_str(dict, "a", "0"));
assert(!ben_dict_set_str_by_str(dict, "b", "1"));
assert(ben_allocate(dict, 1)); /* Truncation fails */
ben_free(dict);
/*
* Insert 8 items, remove 6, check that internal allocation size
* decreased after removal.
*/
dict = ben_dict();
for (i = 0; i < 8; i++) {
char number[4];
snprintf(number, sizeof number, "%d", i);
assert(!ben_dict_set_str_by_str(dict, number, number));
}
assert(ben_dict_len(dict) == 8);
oldalloc = ben_dict_const_cast(dict)->alloc;
for (i = 0; i < 6; i++) {
char number[4];
snprintf(number, sizeof number, "%d", i);
b = ben_dict_pop_by_str(dict, number);
assert(b != NULL);
ben_free(b);
}
assert(ben_dict_len(dict) == 2);
assert(ben_dict_const_cast(dict)->alloc < oldalloc);
ben_free(dict);
}
#define SHA1_LEN 20
struct ben_sha1 {
struct bencode_user user;
char sha1[SHA1_LEN];
};
struct ben_pair {
struct bencode_user user;
struct bencode *first;
struct bencode *second;
};
static struct bencode_type sha1_type;
static struct bencode_type pair_type;
static struct bencode *alloc_sha1(const char *data)
{
struct ben_sha1 *sha1 = ben_alloc_user(&sha1_type);
if (sha1 == NULL)
return NULL;
memcpy(sha1->sha1, data, SHA1_LEN);
return (struct bencode *) sha1;
}
static struct bencode *sha1_decode(struct ben_decode_ctx *ctx)
{
struct bencode *sha1;
const char *data = ben_current_buf(ctx, SHA1_LEN);
if (data == NULL)
return ben_insufficient_ptr(ctx);
sha1 = alloc_sha1(data);
if (sha1 == NULL)
return ben_oom_ptr(ctx);
ben_skip(ctx, SHA1_LEN);
return sha1;
}
static int sha1_encode(struct ben_encode_ctx *ctx, const struct bencode *b)
{
const struct ben_sha1 *sha1 = ben_user_type_const_cast(b, &sha1_type);
if (ben_put_char(ctx, 'r'))
return -1;
return ben_put_buffer(ctx, sha1->sha1, SHA1_LEN);
}
static size_t sha1_get_size(const struct bencode *b)
{
(void) b;
return 1 + SHA1_LEN;
}
static struct bencode *alloc_pair(struct bencode *first, struct bencode *second)
{
struct ben_pair *pair = ben_alloc_user(&pair_type);
if (pair == NULL)
return NULL;
pair->first = first;
pair->second = second;
return (struct bencode *) pair;
}
static struct bencode *pair_decode(struct ben_decode_ctx *ctx)
{
struct bencode *pair;
struct bencode *second;
struct bencode *first = ben_ctx_decode(ctx);
if (first == NULL)
return NULL;
second = ben_ctx_decode(ctx);
if (second == NULL) {
ben_free(first);
return NULL;
}
pair = alloc_pair(first, second);
if (pair == NULL) {
ben_free(first);
ben_free(second);
return ben_oom_ptr(ctx);
}
return (struct bencode *) pair;
}
static int pair_encode(struct ben_encode_ctx *ctx, const struct bencode *b)
{
const struct ben_pair *pair = ben_user_type_const_cast(b, &pair_type);
if (ben_put_char(ctx, 'p'))
return -1;
if (ben_ctx_encode(ctx, pair->first))
return -1;
if (ben_ctx_encode(ctx, pair->second))
return -1;
return 0;
}
static size_t pair_get_size(const struct bencode *b)
{
const struct ben_pair *pair = ben_user_type_const_cast(b, &pair_type);
return 1 + ben_encoded_size(pair->first) +
ben_encoded_size(pair->second);
}
static void pair_free(struct bencode *b)
{
struct ben_pair *pair = ben_user_type_cast(b, &pair_type);
ben_free(pair->first);
ben_free(pair->second);
}
static struct bencode_type sha1_type = {
.size = sizeof(struct ben_sha1),
.decode = sha1_decode,
.encode = sha1_encode,
.get_size = sha1_get_size,
};
static struct bencode_type pair_type = {
.size = sizeof(struct ben_pair),
.decode = pair_decode,
.encode = pair_encode,
.get_size = pair_get_size,
.free = pair_free,
};
static void user_tests(void)
{
const char dummy_sha1[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13};
size_t off = 0;
size_t len = 0;
struct bencode *b;
struct bencode *c;
struct bencode *d;
struct ben_sha1 *sha1;
struct ben_pair *pair;
void *data;
struct bencode_type *types[128] = {NULL};
assert(sizeof dummy_sha1 == SHA1_LEN);
types['r'] = &sha1_type;
types['p'] = &pair_type;
b = alloc_sha1(dummy_sha1);
data = ben_encode(&len, b);
ben_free(b);
b = ben_decode3(data, len, &off, NULL, types);
assert(ben_is_user_type(b, &sha1_type));
sha1 = ben_user_type_cast(b, &sha1_type);
assert(memcmp(sha1->sha1, dummy_sha1, SHA1_LEN) == 0);
ben_free(b);
free(data);
off = 0;
b = ben_decode3("r\00\00\00\00", 5, &off, NULL, types);
assert(b == NULL);
c = ben_str("foo");
d = ben_int(1234);
b = alloc_pair(c, d);
data = ben_encode(&len, b);
ben_free(b);
assert(len == 12 && memcmp(data, "p3:fooi1234e", 12) == 0);
off = 0;
b = ben_decode3(data, len, &off, NULL, types);
assert(ben_is_user_type(b, &pair_type));
pair = ben_user_type_cast(b, &pair_type);
assert(strcmp(ben_str_val(pair->first), "foo") == 0 &&
ben_int_val(pair->second) == 1234);
ben_free(b);
free(data);
off = 0;
b = ben_decode3("p3:foo", 6, &off, NULL, types);
assert(b == NULL);
}