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/* Copyright (c) 2009-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "buffer.h"
#include "str.h"
#include "randgen.h"
#include "charset-utf8.h"
#include "message-header-encode.h"
#include "message-header-decode.h"
#include "test-common.h"
static void test_message_header_decode(void)
{
static const char *data[] = {
" \t=?utf-8?q?=c3=a4?= =?utf-8?q?=c3=a4?= b \t\r\n ", "\xC3\xA4\xC3\xA4 b \t\r\n ",
"a =?utf-8?q?=c3=a4?= b", "a \xC3\xA4 b",
"a =?utf-8?q?=c3=a4?= b", "a \xC3\xA4 b",
"a =?utf-8?q?=c3=a4?=\t\t\r\n =?utf-8?q?=c3=a4?= b", "a \xC3\xA4\xC3\xA4 b",
"a =?utf-8?q?=c3=a4?= x =?utf-8?q?=c3=a4?= b", "a \xC3\xA4 x \xC3\xA4 b",
"a =?utf-8?b?w6TDpCDDpA==?= b", "a \xC3\xA4\xC3\xA4 \xC3\xA4 b",
"=?utf-8?b?w6Qgw6Q=?=", "\xC3\xA4 \xC3\xA4",
"a =?utf-8?b?////?= b", "a "UNICODE_REPLACEMENT_CHAR_UTF8" b",
"a =?utf-16le?b?UADkAGkAdgDkAOQA?= b", "a P\xC3\xA4iv\xC3\xA4\xC3\xA4 b",
"a =?utf-9?b?UMOkaXbDpMOk?= b", "a P\xC3\xA4iv\xC3\xA4\xC3\xA4 b",
};
string_t *dest;
unsigned int i;
test_begin("message header decode");
dest = t_str_new(256);
for (i = 0; i < N_ELEMENTS(data); i += 2) {
str_truncate(dest, 0);
message_header_decode_utf8((const unsigned char *)data[i],
strlen(data[i]), dest, NULL);
test_assert_strcmp_idx(str_c(dest), data[i+1], i / 2);
}
test_end();
}
static void test_message_header_decode_read_overflow(void)
{
const unsigned char input[] = "=?utf-8?Q?=EF?=";
string_t *dest = t_str_new(32);
test_begin("message header decode read overflow");
message_header_decode_utf8(input, sizeof(input)-2, dest, NULL);
test_end();
}
static void check_encoded(string_t *encoded, unsigned int test_idx)
{
const unsigned char *enc = str_data(encoded), *p, *pend;
size_t enc_len = str_len(encoded), cur_line_len = 0;
p = enc;
pend = enc + enc_len;
while (p < pend) {
if (*p == '\r') {
p++;
continue;
}
if (*p == '\n') {
test_assert_idx(cur_line_len <= 76, test_idx);
cur_line_len = 0;
p++;
continue;
}
cur_line_len++;
test_assert_idx((*p >= 0x20 && *p <= 0x7e) || *p == '\t',
test_idx);
p++;
}
test_assert_idx(cur_line_len <= 76, test_idx);
}
static void
check_encode_decode_result(const unsigned char *inbuf, size_t inbuf_len,
string_t *out, unsigned int test_idx)
{
static const unsigned char *rep_char =
(const unsigned char *)UNICODE_REPLACEMENT_CHAR_UTF8;
static const ptrdiff_t rep_char_len =
UNICODE_REPLACEMENT_CHAR_UTF8_LEN;
const unsigned char *outbuf = str_data(out);
size_t outbuf_len = str_len(out);
const unsigned char *pin, *pinend, *pout, *poutend;
bool invalid_char = FALSE;
if (test_has_failed())
return;
pin = inbuf;
pinend = inbuf + inbuf_len;
pout = outbuf;
poutend = outbuf + outbuf_len;
while (pin < pinend) {
unichar_t ch;
int nch;
nch = uni_utf8_get_char_n(pin, pinend - pin, &ch);
if (nch <= 0) {
/* Invalid character; check proper substitution of
replacement character in encoded/decoded output. */
pin++;
if (!invalid_char) {
/* Only one character is substituted for a run
of bad stuff. */
test_assert_idx(
(poutend - pout) >= rep_char_len &&
memcmp(pout, rep_char,
rep_char_len) == 0, test_idx);
pout += rep_char_len;
}
invalid_char = TRUE;
} else {
/* Valid character; check matching character bytes. */
invalid_char = FALSE;
test_assert_idx((pinend - pin) >= nch &&
(poutend - pout) >= nch &&
memcmp(pin, pout, nch) == 0, test_idx);
pin += nch;
pout += nch;
}
if (test_has_failed())
return;
}
/* Both buffers must have reached the end now. */
test_assert_idx(pin == pinend && pout == poutend, test_idx);
}
static void test_message_header_decode_encode_random(void)
{
string_t *encoded, *decoded;
unsigned char buf[1024];
unsigned int i, j, buflen;
test_begin("message header encode & decode randomly (7 bit)");
encoded = t_str_new(256);
decoded = t_str_new(256);
for (i = 0; i < 1000; i++) {
/* fill only with 7bit data so we don't have to worry about
the data being valid UTF-8 */
buflen = i_rand_limit(sizeof(buf));
for (j = 0; j < buflen; j++)
buf[j] = i_rand_limit(128);
str_truncate(encoded, 0);
str_truncate(decoded, 0);
/* test Q */
message_header_encode_q(buf, buflen, encoded, 0);
check_encoded(encoded, i);
message_header_decode_utf8(encoded->data, encoded->used,
decoded, NULL);
test_assert_idx(decoded->used == buflen &&
memcmp(decoded->data, buf, buflen) == 0, i);
/* test B */
str_truncate(encoded, 0);
str_truncate(decoded, 0);
message_header_encode_b(buf, buflen, encoded, 0);
check_encoded(encoded, i);
message_header_decode_utf8(encoded->data, encoded->used,
decoded, NULL);
test_assert_idx(decoded->used == buflen &&
memcmp(decoded->data, buf, buflen) == 0, i);
}
test_end();
test_begin("message header encode & decode randomly (8 bit)");
for (i = 0; i < 1000; i++) {
buflen = i_rand_limit(sizeof(buf));
random_fill(buf, buflen);
str_truncate(encoded, 0);
str_truncate(decoded, 0);
/* test Q */
message_header_encode_q(buf, buflen, encoded, 0);
check_encoded(encoded, i);
message_header_decode_utf8(encoded->data, encoded->used,
decoded, NULL);
check_encode_decode_result(buf, buflen, decoded, i);
/* test B */
str_truncate(encoded, 0);
str_truncate(decoded, 0);
message_header_encode_b(buf, buflen, encoded, 0);
check_encoded(encoded, i);
message_header_decode_utf8(encoded->data, encoded->used,
decoded, NULL);
check_encode_decode_result(buf, buflen, decoded, i);
}
test_end();
}
int main(void)
{
static void (*const test_functions[])(void) = {
test_message_header_decode,
test_message_header_decode_read_overflow,
test_message_header_decode_encode_random,
NULL
};
return test_run(test_functions);
}
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