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/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
#include "test-lib.h"
#include "istream.h"
#include "ostream.h"
#include "buffer.h"
#include "str.h"
#include "ioloop.h"
#include "iostream-pump.h"
#include "istream-failure-at.h"
#include "ostream-failure-at.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
struct nonblock_ctx {
struct istream *in;
struct ostream *out;
uoff_t pos, max_size;
};
static unsigned char data[] = "hello, world";
static void completed(enum iostream_pump_status status, int *u0)
{
/* to somehow discern between error and success .. */
(*u0) -= (status == IOSTREAM_PUMP_STATUS_INPUT_EOF ? 1 : 2);
io_loop_stop(current_ioloop);
}
static void failed(int *u0)
{
*u0 = -1; /* ensure failure */
io_loop_stop(current_ioloop);
}
static void pump_nonblocking_timeout(struct nonblock_ctx *ctx)
{
switch (ctx->pos % 4) {
case 0:
break;
case 1:
/* allow more input */
if (ctx->in->blocking)
break;
if (ctx->pos/4 == ctx->max_size+1)
test_istream_set_allow_eof(ctx->in, TRUE);
else
test_istream_set_size(ctx->in, ctx->pos/4);
i_stream_set_input_pending(ctx->in, TRUE);
break;
case 2:
break;
case 3: {
/* allow more output. give always one byte less than the
input size so there's something in internal buffer. */
if (ctx->out->blocking)
break;
size_t size = ctx->pos/4;
if (size > 0)
test_ostream_set_max_output_size(ctx->out, size-1);
break;
}
}
ctx->pos++;
}
static const char *
run_pump(struct istream *in, struct ostream *out, int *counter,
buffer_t *out_buffer)
{
struct iostream_pump *pump;
struct ioloop *ioloop = io_loop_create();
io_loop_set_current(ioloop);
struct nonblock_ctx ctx = { in, out, 0, 0 };
struct timeout *to2 = NULL;
if (!in->blocking) {
test_assert(i_stream_get_size(in, TRUE, &ctx.max_size) > 0);
test_istream_set_size(in, 0);
test_istream_set_allow_eof(in, FALSE);
}
if (!out->blocking) {
test_ostream_set_max_output_size(out, 0);
}
if (!in->blocking || !out->blocking) {
to2 = timeout_add_short(0, pump_nonblocking_timeout, &ctx);
}
pump = iostream_pump_create(in, out);
i_stream_unref(&in);
o_stream_unref(&out);
iostream_pump_set_completion_callback(pump, completed, counter);
iostream_pump_start(pump);
alarm(5);
struct timeout *to = timeout_add(3000, failed, counter);
io_loop_run(current_ioloop);
timeout_remove(&to);
timeout_remove(&to2);
alarm(0);
test_assert(*counter == 0);
if (!ctx.out->blocking && ctx.in->stream_errno != 0 &&
ctx.out->stream_errno == 0) {
/* input failed, finish flushing output */
test_ostream_set_max_output_size(ctx.out, SIZE_MAX);
test_assert(o_stream_flush(ctx.out) > 0);
} else {
test_assert(o_stream_flush(ctx.out) != 0);
}
const char *ret = t_strdup(str_c(out_buffer));
iostream_pump_unref(&pump);
io_loop_destroy(&ioloop);
return ret;
}
static void
test_iostream_setup(bool in_block, bool out_block,
struct istream **in_r, struct ostream **out_r,
buffer_t **out_buffer_r)
{
*out_buffer_r = t_buffer_create(128);
*in_r = test_istream_create_data(data, sizeof(data));
(*in_r)->blocking = in_block;
if (out_block)
*out_r = test_ostream_create(*out_buffer_r);
else
*out_r = test_ostream_create_nonblocking(*out_buffer_r, 1);
}
static void
test_iostream_pump_simple(bool in_block, bool out_block)
{
int counter;
struct istream *in;
struct ostream *out;
buffer_t *buffer;
test_begin(t_strdup_printf("iostream_pump "
"(in=%sblocking, out=%sblocking)",
(in_block ? "" : "non-"),
(out_block ? "" : "non-")));
test_iostream_setup(in_block, out_block, &in, &out, &buffer);
counter = 1;
test_assert(strcmp(run_pump(in, out, &counter, buffer),
"hello, world") == 0);
test_end();
}
static void
test_iostream_pump_failure_start_read(bool in_block, bool out_block)
{
int counter;
struct istream *in, *in_2;
struct ostream *out;
buffer_t *buffer;
test_begin(t_strdup_printf("iostream_pump failure start-read "
"(in=%sblocking, out=%sblocking)",
(in_block ? "" : "non-"),
(out_block ? "" : "non-")));
test_iostream_setup(in_block, out_block, &in_2, &out, &buffer);
in = i_stream_create_failure_at(in_2, 0, EIO, "test pump fail");
i_stream_unref(&in_2);
counter = 2;
test_assert(strcmp(run_pump(in, out, &counter, buffer), "") == 0);
test_end();
}
static void
test_iostream_pump_failure_mid_read(bool in_block, bool out_block)
{
int counter;
struct istream *in, *in_2;
struct ostream *out;
buffer_t *buffer;
test_begin(t_strdup_printf("iostream_pump failure mid-read "
"(in=%sblocking, out=%sblocking)",
(in_block ? "" : "non-"),
(out_block ? "" : "non-")));
test_iostream_setup(in_block, out_block, &in_2, &out, &buffer);
in = i_stream_create_failure_at(in_2, 4, EIO, "test pump fail");
i_stream_unref(&in_2);
counter = 2;
test_assert(strcmp(run_pump(in, out, &counter, buffer), "hell") == 0);
test_end();
}
static void
test_iostream_pump_failure_end_read(bool in_block, bool out_block)
{
int counter;
struct istream *in, *in_2;
struct ostream *out;
buffer_t *buffer;
test_begin(t_strdup_printf("iostream_pump failure mid-read "
"(in=%sblocking, out=%sblocking)",
(in_block ? "" : "non-"),
(out_block ? "" : "non-")));
test_iostream_setup(in_block, out_block, &in_2, &out, &buffer);
in = i_stream_create_failure_at_eof(in_2, EIO, "test pump fail");
i_stream_unref(&in_2);
counter = 2;
test_assert(strcmp(run_pump(in, out, &counter, buffer),
"hello, world") == 0);
test_end();
}
static void
test_iostream_pump_failure_start_write(bool in_block, bool out_block)
{
int counter;
struct istream *in;
struct ostream *out, *out_2;
buffer_t *buffer;
test_begin(t_strdup_printf("iostream_pump failure start-write "
"(in=%sblocking, out=%sblocking)",
(in_block ? "" : "non-"),
(out_block ? "" : "non-")));
test_iostream_setup(in_block, out_block, &in, &out_2, &buffer);
out = o_stream_create_failure_at(out_2, 0, "test pump fail");
o_stream_unref(&out_2);
counter = 2;
test_assert(strcmp(run_pump(in, out, &counter, buffer), "") == 0);
test_end();
}
static void
test_iostream_pump_failure_mid_write(bool in_block, bool out_block)
{
int counter;
struct istream *in;
struct ostream *out, *out_2;
buffer_t *buffer;
test_begin(t_strdup_printf("iostream_pump failure mid-write "
"(in=%sblocking, out=%sblocking)",
(in_block ? "" : "non-"),
(out_block ? "" : "non-")));
test_iostream_setup(in_block, out_block, &in, &out_2, &buffer);
out = o_stream_create_failure_at(out_2, 4, "test pump fail");
o_stream_unref(&out_2);
counter = 2;
/* "hel" because the last byte is only in internal buffer */
test_assert(strcmp(run_pump(in, out, &counter, buffer),
(out_block ? (in_block ? "" : "hell") :
"hel")) == 0);
test_end();
}
static void
test_iostream_pump_failure_end_write(bool in_block, bool out_block)
{
int counter;
struct istream *in;
struct ostream *out, *out_2;
buffer_t *buffer;
if (!out_block || !in_block) {
/* we'll get flushes constantly */
return;
}
test_begin("iostream_pump failure end-write (blocking)");
test_iostream_setup(in_block, out_block, &in, &out_2, &buffer);
out = o_stream_create_failure_at_flush(out_2, "test pump fail");
o_stream_unref(&out_2);
counter = 2;
test_assert(strcmp(run_pump(in, out, &counter, buffer),
"hello, world") == 0);
test_end();
}
static void
test_iostream_pump_real(void)
{
for(int i = 0; i < 3; i++) {
bool in_block = ((i & BIT(0)) != 0);
bool out_block = ((i & BIT(1)) != 0);
test_iostream_pump_simple(in_block, out_block);
test_iostream_pump_failure_start_read(in_block, out_block);
test_iostream_pump_failure_mid_read(in_block, out_block);
test_iostream_pump_failure_end_read(in_block, out_block);
test_iostream_pump_failure_start_write(in_block, out_block);
test_iostream_pump_failure_mid_write(in_block, out_block);
test_iostream_pump_failure_end_write(in_block, out_block);
}
}
void test_iostream_pump(void)
{
T_BEGIN {
test_iostream_pump_real();
} T_END;
}
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