/
regress_buffer.c
2242 lines (1924 loc) · 63.6 KB
/
regress_buffer.c
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/*
* Copyright (c) 2003-2007 Niels Provos <provos@citi.umich.edu>
* Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "util-internal.h"
#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#endif
#include "event2/event-config.h"
#include <sys/types.h>
#include <sys/stat.h>
#ifdef EVENT__HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/queue.h>
#ifndef _WIN32
#include <sys/socket.h>
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
#include <netdb.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include "event2/event.h"
#include "event2/buffer.h"
#include "event2/buffer_compat.h"
#include "event2/util.h"
#include "defer-internal.h"
#include "evbuffer-internal.h"
#include "log-internal.h"
#include "regress.h"
/* Validates that an evbuffer is good. Returns false if it isn't, true if it
* is*/
static int
evbuffer_validate_(struct evbuffer *buf)
{
struct evbuffer_chain *chain;
size_t sum = 0;
int found_last_with_datap = 0;
if (buf->first == NULL) {
tt_assert(buf->last == NULL);
tt_assert(buf->total_len == 0);
}
chain = buf->first;
tt_assert(buf->last_with_datap);
if (buf->last_with_datap == &buf->first)
found_last_with_datap = 1;
while (chain != NULL) {
if (&chain->next == buf->last_with_datap)
found_last_with_datap = 1;
sum += chain->off;
if (chain->next == NULL) {
tt_assert(buf->last == chain);
}
tt_assert(chain->buffer_len >= chain->misalign + chain->off);
chain = chain->next;
}
if (buf->first)
tt_assert(*buf->last_with_datap);
if (*buf->last_with_datap) {
chain = *buf->last_with_datap;
if (chain->off == 0 || buf->total_len == 0) {
tt_assert(chain->off == 0)
tt_assert(chain == buf->first);
tt_assert(buf->total_len == 0);
}
chain = chain->next;
while (chain != NULL) {
tt_assert(chain->off == 0);
chain = chain->next;
}
} else {
tt_assert(buf->last_with_datap == &buf->first);
}
tt_assert(found_last_with_datap);
tt_assert(sum == buf->total_len);
return 1;
end:
return 0;
}
static void
evbuffer_get_waste(struct evbuffer *buf, size_t *allocatedp, size_t *wastedp, size_t *usedp)
{
struct evbuffer_chain *chain;
size_t a, w, u;
int n = 0;
u = a = w = 0;
chain = buf->first;
/* skip empty at start */
while (chain && chain->off==0) {
++n;
a += chain->buffer_len;
chain = chain->next;
}
/* first nonempty chain: stuff at the end only is wasted. */
if (chain) {
++n;
a += chain->buffer_len;
u += chain->off;
if (chain->next && chain->next->off)
w += (size_t)(chain->buffer_len - (chain->misalign + chain->off));
chain = chain->next;
}
/* subsequent nonempty chains */
while (chain && chain->off) {
++n;
a += chain->buffer_len;
w += (size_t)chain->misalign;
u += chain->off;
if (chain->next && chain->next->off)
w += (size_t) (chain->buffer_len - (chain->misalign + chain->off));
chain = chain->next;
}
/* subsequent empty chains */
while (chain) {
++n;
a += chain->buffer_len;
}
*allocatedp = a;
*wastedp = w;
*usedp = u;
}
#define evbuffer_validate(buf) \
TT_STMT_BEGIN if (!evbuffer_validate_(buf)) TT_DIE(("Buffer format invalid")); TT_STMT_END
static void
test_evbuffer(void *ptr)
{
static char buffer[512], *tmp;
struct evbuffer *evb = evbuffer_new();
struct evbuffer *evb_two = evbuffer_new();
size_t sz_tmp;
int i;
evbuffer_validate(evb);
evbuffer_add_printf(evb, "%s/%d", "hello", 1);
evbuffer_validate(evb);
tt_assert(evbuffer_get_length(evb) == 7);
tt_assert(!memcmp((char*)EVBUFFER_DATA(evb), "hello/1", 1));
evbuffer_add_buffer(evb, evb_two);
evbuffer_validate(evb);
evbuffer_drain(evb, strlen("hello/"));
evbuffer_validate(evb);
tt_assert(evbuffer_get_length(evb) == 1);
tt_assert(!memcmp((char*)EVBUFFER_DATA(evb), "1", 1));
evbuffer_add_printf(evb_two, "%s", "/hello");
evbuffer_validate(evb);
evbuffer_add_buffer(evb, evb_two);
evbuffer_validate(evb);
tt_assert(evbuffer_get_length(evb_two) == 0);
tt_assert(evbuffer_get_length(evb) == 7);
tt_assert(!memcmp((char*)EVBUFFER_DATA(evb), "1/hello", 7) != 0);
memset(buffer, 0, sizeof(buffer));
evbuffer_add(evb, buffer, sizeof(buffer));
evbuffer_validate(evb);
tt_assert(evbuffer_get_length(evb) == 7 + 512);
tmp = (char *)evbuffer_pullup(evb, 7 + 512);
tt_assert(tmp);
tt_assert(!strncmp(tmp, "1/hello", 7));
tt_assert(!memcmp(tmp + 7, buffer, sizeof(buffer)));
evbuffer_validate(evb);
evbuffer_prepend(evb, "something", 9);
evbuffer_validate(evb);
evbuffer_prepend(evb, "else", 4);
evbuffer_validate(evb);
tmp = (char *)evbuffer_pullup(evb, 4 + 9 + 7);
tt_assert(!strncmp(tmp, "elsesomething1/hello", 4 + 9 + 7));
evbuffer_validate(evb);
evbuffer_drain(evb, -1);
evbuffer_validate(evb);
evbuffer_drain(evb_two, -1);
evbuffer_validate(evb);
for (i = 0; i < 3; ++i) {
evbuffer_add(evb_two, buffer, sizeof(buffer));
evbuffer_validate(evb_two);
evbuffer_add_buffer(evb, evb_two);
evbuffer_validate(evb);
evbuffer_validate(evb_two);
}
tt_assert(evbuffer_get_length(evb_two) == 0);
tt_assert(evbuffer_get_length(evb) == i * sizeof(buffer));
/* test remove buffer */
sz_tmp = (size_t)(sizeof(buffer)*2.5);
evbuffer_remove_buffer(evb, evb_two, sz_tmp);
tt_assert(evbuffer_get_length(evb_two) == sz_tmp);
tt_assert(evbuffer_get_length(evb) == sizeof(buffer) / 2);
evbuffer_validate(evb);
if (memcmp(evbuffer_pullup(
evb, -1), buffer, sizeof(buffer) / 2) != 0 ||
memcmp(evbuffer_pullup(
evb_two, -1), buffer, sizeof(buffer) != 0))
tt_abort_msg("Pullup did not preserve content");
evbuffer_validate(evb);
/* testing one-vector reserve and commit */
{
struct evbuffer_iovec v[1];
char *buf;
int i, j, r;
for (i = 0; i < 3; ++i) {
r = evbuffer_reserve_space(evb, 10000, v, 1);
tt_int_op(r, ==, 1);
tt_assert(v[0].iov_len >= 10000);
tt_assert(v[0].iov_base != NULL);
evbuffer_validate(evb);
buf = v[0].iov_base;
for (j = 0; j < 10000; ++j) {
buf[j] = j;
}
evbuffer_validate(evb);
tt_int_op(evbuffer_commit_space(evb, v, 1), ==, 0);
evbuffer_validate(evb);
tt_assert(evbuffer_get_length(evb) >= 10000);
evbuffer_drain(evb, j * 5000);
evbuffer_validate(evb);
}
}
end:
evbuffer_free(evb);
evbuffer_free(evb_two);
}
static void
no_cleanup(const void *data, size_t datalen, void *extra)
{
}
static void
test_evbuffer_remove_buffer_with_empty(void *ptr)
{
struct evbuffer *src = evbuffer_new();
struct evbuffer *dst = evbuffer_new();
char buf[2];
evbuffer_validate(src);
evbuffer_validate(dst);
/* setup the buffers */
/* we need more data in src than we will move later */
evbuffer_add_reference(src, buf, sizeof(buf), no_cleanup, NULL);
evbuffer_add_reference(src, buf, sizeof(buf), no_cleanup, NULL);
/* we need one buffer in dst and one empty buffer at the end */
evbuffer_add(dst, buf, sizeof(buf));
evbuffer_add_reference(dst, buf, 0, no_cleanup, NULL);
evbuffer_validate(src);
evbuffer_validate(dst);
/* move three bytes over */
evbuffer_remove_buffer(src, dst, 3);
evbuffer_validate(src);
evbuffer_validate(dst);
end:
evbuffer_free(src);
evbuffer_free(dst);
}
static void
test_evbuffer_reserve2(void *ptr)
{
/* Test the two-vector cases of reserve/commit. */
struct evbuffer *buf = evbuffer_new();
int n, i;
struct evbuffer_iovec v[2];
size_t remaining;
char *cp, *cp2;
/* First chunk will necessarily be one chunk. Use 512 bytes of it.*/
n = evbuffer_reserve_space(buf, 1024, v, 2);
tt_int_op(n, ==, 1);
tt_int_op(evbuffer_get_length(buf), ==, 0);
tt_assert(v[0].iov_base != NULL);
tt_int_op(v[0].iov_len, >=, 1024);
memset(v[0].iov_base, 'X', 512);
cp = v[0].iov_base;
remaining = v[0].iov_len - 512;
v[0].iov_len = 512;
evbuffer_validate(buf);
tt_int_op(0, ==, evbuffer_commit_space(buf, v, 1));
tt_int_op(evbuffer_get_length(buf), ==, 512);
evbuffer_validate(buf);
/* Ask for another same-chunk request, in an existing chunk. Use 8
* bytes of it. */
n = evbuffer_reserve_space(buf, 32, v, 2);
tt_int_op(n, ==, 1);
tt_assert(cp + 512 == v[0].iov_base);
tt_int_op(remaining, ==, v[0].iov_len);
memset(v[0].iov_base, 'Y', 8);
v[0].iov_len = 8;
tt_int_op(0, ==, evbuffer_commit_space(buf, v, 1));
tt_int_op(evbuffer_get_length(buf), ==, 520);
remaining -= 8;
evbuffer_validate(buf);
/* Now ask for a request that will be split. Use only one byte of it,
though. */
n = evbuffer_reserve_space(buf, remaining+64, v, 2);
tt_int_op(n, ==, 2);
tt_assert(cp + 520 == v[0].iov_base);
tt_int_op(remaining, ==, v[0].iov_len);
tt_assert(v[1].iov_base);
tt_assert(v[1].iov_len >= 64);
cp2 = v[1].iov_base;
memset(v[0].iov_base, 'Z', 1);
v[0].iov_len = 1;
tt_int_op(0, ==, evbuffer_commit_space(buf, v, 1));
tt_int_op(evbuffer_get_length(buf), ==, 521);
remaining -= 1;
evbuffer_validate(buf);
/* Now ask for a request that will be split. Use some of the first
* part and some of the second. */
n = evbuffer_reserve_space(buf, remaining+64, v, 2);
evbuffer_validate(buf);
tt_int_op(n, ==, 2);
tt_assert(cp + 521 == v[0].iov_base);
tt_int_op(remaining, ==, v[0].iov_len);
tt_assert(v[1].iov_base == cp2);
tt_assert(v[1].iov_len >= 64);
memset(v[0].iov_base, 'W', 400);
v[0].iov_len = 400;
memset(v[1].iov_base, 'x', 60);
v[1].iov_len = 60;
tt_int_op(0, ==, evbuffer_commit_space(buf, v, 2));
tt_int_op(evbuffer_get_length(buf), ==, 981);
evbuffer_validate(buf);
/* Now peek to make sure stuff got made how we like. */
memset(v,0,sizeof(v));
n = evbuffer_peek(buf, -1, NULL, v, 2);
tt_int_op(n, ==, 2);
tt_int_op(v[0].iov_len, ==, 921);
tt_int_op(v[1].iov_len, ==, 60);
cp = v[0].iov_base;
for (i=0; i<512; ++i)
tt_int_op(cp[i], ==, 'X');
for (i=512; i<520; ++i)
tt_int_op(cp[i], ==, 'Y');
for (i=520; i<521; ++i)
tt_int_op(cp[i], ==, 'Z');
for (i=521; i<921; ++i)
tt_int_op(cp[i], ==, 'W');
cp = v[1].iov_base;
for (i=0; i<60; ++i)
tt_int_op(cp[i], ==, 'x');
end:
evbuffer_free(buf);
}
static void
test_evbuffer_reserve_many(void *ptr)
{
/* This is a glass-box test to handle expanding a buffer with more
* chunks and reallocating chunks as needed */
struct evbuffer *buf = evbuffer_new();
struct evbuffer_iovec v[8];
int n;
size_t sz;
int add_data = ptr && !strcmp(ptr, "add");
int fill_first = ptr && !strcmp(ptr, "fill");
char *cp1, *cp2;
/* When reserving the the first chunk, we just allocate it */
n = evbuffer_reserve_space(buf, 128, v, 2);
evbuffer_validate(buf);
tt_int_op(n, ==, 1);
tt_assert(v[0].iov_len >= 128);
sz = v[0].iov_len;
cp1 = v[0].iov_base;
if (add_data) {
*(char*)v[0].iov_base = 'X';
v[0].iov_len = 1;
n = evbuffer_commit_space(buf, v, 1);
tt_int_op(n, ==, 0);
} else if (fill_first) {
memset(v[0].iov_base, 'X', v[0].iov_len);
n = evbuffer_commit_space(buf, v, 1);
tt_int_op(n, ==, 0);
n = evbuffer_reserve_space(buf, 128, v, 2);
tt_int_op(n, ==, 1);
sz = v[0].iov_len;
tt_assert(v[0].iov_base != cp1);
cp1 = v[0].iov_base;
}
/* Make another chunk get added. */
n = evbuffer_reserve_space(buf, sz+128, v, 2);
evbuffer_validate(buf);
tt_int_op(n, ==, 2);
sz = v[0].iov_len + v[1].iov_len;
tt_int_op(sz, >=, v[0].iov_len+128);
if (add_data) {
tt_assert(v[0].iov_base == cp1 + 1);
} else {
tt_assert(v[0].iov_base == cp1);
}
cp1 = v[0].iov_base;
cp2 = v[1].iov_base;
/* And a third chunk. */
n = evbuffer_reserve_space(buf, sz+128, v, 3);
evbuffer_validate(buf);
tt_int_op(n, ==, 3);
tt_assert(cp1 == v[0].iov_base);
tt_assert(cp2 == v[1].iov_base);
sz = v[0].iov_len + v[1].iov_len + v[2].iov_len;
/* Now force a reallocation by asking for more space in only 2
* buffers. */
n = evbuffer_reserve_space(buf, sz+128, v, 2);
evbuffer_validate(buf);
if (add_data) {
tt_int_op(n, ==, 2);
tt_assert(cp1 == v[0].iov_base);
} else {
tt_int_op(n, ==, 1);
}
end:
evbuffer_free(buf);
}
static void
test_evbuffer_expand(void *ptr)
{
char data[4096];
struct evbuffer *buf;
size_t a,w,u;
void *buffer;
memset(data, 'X', sizeof(data));
/* Make sure that expand() works on an empty buffer */
buf = evbuffer_new();
tt_int_op(evbuffer_expand(buf, 20000), ==, 0);
evbuffer_validate(buf);
a=w=u=0;
evbuffer_get_waste(buf, &a,&w,&u);
tt_assert(w == 0);
tt_assert(u == 0);
tt_assert(a >= 20000);
tt_assert(buf->first);
tt_assert(buf->first == buf->last);
tt_assert(buf->first->off == 0);
tt_assert(buf->first->buffer_len >= 20000);
/* Make sure that expand() works as a no-op when there's enough
* contiguous space already. */
buffer = buf->first->buffer;
evbuffer_add(buf, data, 1024);
tt_int_op(evbuffer_expand(buf, 1024), ==, 0);
tt_assert(buf->first->buffer == buffer);
evbuffer_validate(buf);
evbuffer_free(buf);
/* Make sure that expand() can work by moving misaligned data
* when it makes sense to do so. */
buf = evbuffer_new();
evbuffer_add(buf, data, 400);
{
int n = (int)(buf->first->buffer_len - buf->first->off - 1);
tt_assert(n < (int)sizeof(data));
evbuffer_add(buf, data, n);
}
tt_assert(buf->first == buf->last);
tt_assert(buf->first->off == buf->first->buffer_len - 1);
evbuffer_drain(buf, buf->first->off - 1);
tt_assert(1 == evbuffer_get_length(buf));
tt_assert(buf->first->misalign > 0);
tt_assert(buf->first->off == 1);
buffer = buf->first->buffer;
tt_assert(evbuffer_expand(buf, 40) == 0);
tt_assert(buf->first == buf->last);
tt_assert(buf->first->off == 1);
tt_assert(buf->first->buffer == buffer);
tt_assert(buf->first->misalign == 0);
evbuffer_validate(buf);
evbuffer_free(buf);
/* add, expand, pull-up: This used to crash libevent. */
buf = evbuffer_new();
evbuffer_add(buf, data, sizeof(data));
evbuffer_add(buf, data, sizeof(data));
evbuffer_add(buf, data, sizeof(data));
evbuffer_validate(buf);
evbuffer_expand(buf, 1024);
evbuffer_validate(buf);
evbuffer_pullup(buf, -1);
evbuffer_validate(buf);
end:
evbuffer_free(buf);
}
static int reference_cb_called;
static void
reference_cb(const void *data, size_t len, void *extra)
{
tt_str_op(data, ==, "this is what we add as read-only memory.");
tt_int_op(len, ==, strlen(data));
tt_want(extra == (void *)0xdeadaffe);
++reference_cb_called;
end:
;
}
static void
test_evbuffer_reference(void *ptr)
{
struct evbuffer *src = evbuffer_new();
struct evbuffer *dst = evbuffer_new();
struct evbuffer_iovec v[1];
const char *data = "this is what we add as read-only memory.";
reference_cb_called = 0;
tt_assert(evbuffer_add_reference(src, data, strlen(data),
reference_cb, (void *)0xdeadaffe) != -1);
evbuffer_reserve_space(dst, strlen(data), v, 1);
tt_assert(evbuffer_remove(src, v[0].iov_base, 10) != -1);
evbuffer_validate(src);
evbuffer_validate(dst);
/* make sure that we don't write data at the beginning */
evbuffer_prepend(src, "aaaaa", 5);
evbuffer_validate(src);
evbuffer_drain(src, 5);
tt_assert(evbuffer_remove(src, ((char*)(v[0].iov_base)) + 10,
strlen(data) - 10) != -1);
v[0].iov_len = strlen(data);
evbuffer_commit_space(dst, v, 1);
evbuffer_validate(src);
evbuffer_validate(dst);
tt_int_op(reference_cb_called, ==, 1);
tt_assert(!memcmp(evbuffer_pullup(dst, strlen(data)),
data, strlen(data)));
evbuffer_validate(dst);
end:
evbuffer_free(dst);
evbuffer_free(src);
}
static struct event_base *addfile_test_event_base = NULL;
static int addfile_test_done_writing = 0;
static int addfile_test_total_written = 0;
static int addfile_test_total_read = 0;
static void
addfile_test_writecb(evutil_socket_t fd, short what, void *arg)
{
struct evbuffer *b = arg;
int r;
evbuffer_validate(b);
while (evbuffer_get_length(b)) {
r = evbuffer_write(b, fd);
if (r > 0) {
addfile_test_total_written += r;
TT_BLATHER(("Wrote %d/%d bytes", r, addfile_test_total_written));
} else {
int e = evutil_socket_geterror(fd);
if (EVUTIL_ERR_RW_RETRIABLE(e))
return;
tt_fail_perror("write");
event_base_loopexit(addfile_test_event_base,NULL);
}
evbuffer_validate(b);
}
addfile_test_done_writing = 1;
return;
end:
event_base_loopexit(addfile_test_event_base,NULL);
}
static void
addfile_test_readcb(evutil_socket_t fd, short what, void *arg)
{
struct evbuffer *b = arg;
int e, r = 0;
do {
r = evbuffer_read(b, fd, 1024);
if (r > 0) {
addfile_test_total_read += r;
TT_BLATHER(("Read %d/%d bytes", r, addfile_test_total_read));
}
} while (r > 0);
if (r < 0) {
e = evutil_socket_geterror(fd);
if (! EVUTIL_ERR_RW_RETRIABLE(e)) {
tt_fail_perror("read");
event_base_loopexit(addfile_test_event_base,NULL);
}
}
if (addfile_test_done_writing &&
addfile_test_total_read >= addfile_test_total_written) {
event_base_loopexit(addfile_test_event_base,NULL);
}
}
static void
test_evbuffer_add_file(void *ptr)
{
struct basic_test_data *testdata = ptr;
const char *impl = testdata->setup_data;
struct evbuffer *src = evbuffer_new(), *dest = evbuffer_new();
char *tmpfilename = NULL;
char *data = NULL;
const char *expect_data;
size_t datalen, expect_len;
const char *compare;
int fd = -1;
int want_ismapping = -1, want_cansendfile = -1;
unsigned flags = 0;
int use_segment = 1, use_bigfile = 0, map_from_offset = 0,
view_from_offset = 0;
struct evbuffer_file_segment *seg = NULL;
ev_off_t starting_offset = 0, mapping_len = -1;
ev_off_t segment_offset = 0, segment_len = -1;
struct event *rev=NULL, *wev=NULL;
struct event_base *base = testdata->base;
evutil_socket_t pair[2] = {-1, -1};
struct evutil_weakrand_state seed = { 123456789U };
/* This test is highly parameterized based on substrings of its
* argument. The strings are: */
tt_assert(impl);
if (strstr(impl, "nosegment")) {
/* If nosegment is set, use the older evbuffer_add_file
* interface */
use_segment = 0;
}
if (strstr(impl, "bigfile")) {
/* If bigfile is set, use a 512K file. Else use a smaller
* one. */
use_bigfile = 1;
}
if (strstr(impl, "map_offset")) {
/* If map_offset is set, we build the file segment starting
* from a point other than byte 0 and ending somewhere other
* than the last byte. Otherwise we map the whole thing */
map_from_offset = 1;
}
if (strstr(impl, "offset_in_segment")) {
/* If offset_in_segment is set, we add a subsection of the
* file semgment starting from a point other than byte 0 of
* the segment. */
view_from_offset = 1;
}
if (strstr(impl, "sendfile")) {
/* If sendfile is set, we try to use a sendfile/splice style
* backend. */
flags = EVBUF_FS_DISABLE_MMAP;
want_cansendfile = 1;
want_ismapping = 0;
} else if (strstr(impl, "mmap")) {
/* If sendfile is set, we try to use a mmap/CreateFileMapping
* style backend. */
flags = EVBUF_FS_DISABLE_SENDFILE;
want_ismapping = 1;
want_cansendfile = 0;
} else if (strstr(impl, "linear")) {
/* If linear is set, we try to use a read-the-whole-thing
* backend. */
flags = EVBUF_FS_DISABLE_SENDFILE|EVBUF_FS_DISABLE_MMAP;
want_ismapping = 0;
want_cansendfile = 0;
} else if (strstr(impl, "default")) {
/* The caller doesn't care which backend we use. */
;
} else {
/* The caller must choose a backend. */
TT_DIE(("Didn't recognize the implementation"));
}
if (use_bigfile) {
unsigned int i;
datalen = 1024*512;
data = malloc(1024*512);
tt_assert(data);
for (i = 0; i < datalen; ++i)
data[i] = (char)evutil_weakrand_(&seed);
} else {
data = strdup("here is a relatively small string.");
tt_assert(data);
datalen = strlen(data);
}
fd = regress_make_tmpfile(data, datalen, &tmpfilename);
if (map_from_offset) {
starting_offset = datalen/4 + 1;
mapping_len = datalen / 2 - 1;
expect_data = data + starting_offset;
expect_len = mapping_len;
} else {
expect_data = data;
expect_len = datalen;
}
if (view_from_offset) {
tt_assert(use_segment); /* Can't do this with add_file*/
segment_offset = expect_len / 3;
segment_len = expect_len / 2;
expect_data = expect_data + segment_offset;
expect_len = segment_len;
}
if (use_segment) {
seg = evbuffer_file_segment_new(fd, starting_offset,
mapping_len, flags);
tt_assert(seg);
if (want_ismapping >= 0) {
if (seg->is_mapping != (unsigned)want_ismapping)
tt_skip();
}
if (want_cansendfile >= 0) {
if (seg->can_sendfile != (unsigned)want_cansendfile)
tt_skip();
}
}
/* Say that it drains to a fd so that we can use sendfile. */
evbuffer_set_flags(src, EVBUFFER_FLAG_DRAINS_TO_FD);
#if defined(EVENT__HAVE_SENDFILE) && defined(__sun__) && defined(__svr4__)
/* We need to use a pair of AF_INET sockets, since Solaris
doesn't support sendfile() over AF_UNIX. */
if (evutil_ersatz_socketpair_(AF_INET, SOCK_STREAM, 0, pair) == -1)
tt_abort_msg("ersatz_socketpair failed");
#else
if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
tt_abort_msg("socketpair failed");
#endif
evutil_make_socket_nonblocking(pair[0]);
evutil_make_socket_nonblocking(pair[1]);
tt_assert(fd != -1);
if (use_segment) {
tt_assert(evbuffer_add_file_segment(src, seg,
segment_offset, segment_len)!=-1);
} else {
tt_assert(evbuffer_add_file(src, fd, starting_offset,
mapping_len) != -1);
}
evbuffer_validate(src);
addfile_test_event_base = base;
wev = event_new(base, pair[0], EV_WRITE|EV_PERSIST,
addfile_test_writecb, src);
rev = event_new(base, pair[1], EV_READ|EV_PERSIST,
addfile_test_readcb, dest);
event_add(wev, NULL);
event_add(rev, NULL);
event_base_dispatch(base);
evbuffer_validate(src);
evbuffer_validate(dest);
tt_assert(addfile_test_done_writing);
tt_int_op(addfile_test_total_written, ==, expect_len);
tt_int_op(addfile_test_total_read, ==, expect_len);
compare = (char *)evbuffer_pullup(dest, expect_len);
tt_assert(compare != NULL);
if (memcmp(compare, expect_data, expect_len)) {
tt_abort_msg("Data from add_file differs.");
}
evbuffer_validate(dest);
end:
if (data)
free(data);
if (seg)
evbuffer_file_segment_free(seg);
if (src)
evbuffer_free(src);
if (dest)
evbuffer_free(dest);
if (pair[0] >= 0)
evutil_closesocket(pair[0]);
if (pair[1] >= 0)
evutil_closesocket(pair[1]);
if (tmpfilename) {
unlink(tmpfilename);
free(tmpfilename);
}
}
static int file_segment_cleanup_cb_called_count = 0;
static int file_segment_cleanup_cb_called_in_time = 1;
static struct evbuffer_file_segment const* file_segment_cleanup_cb_called_with = NULL;
static int file_segment_cleanup_cb_called_with_flags = 0;
static void* file_segment_cleanup_cb_called_with_arg = NULL;
static void
file_segment_cleanup_cp(struct evbuffer_file_segment const* seg, int flags, void* arg)
{
file_segment_cleanup_cb_called_in_time ^= 0;
++file_segment_cleanup_cb_called_count;
file_segment_cleanup_cb_called_with = seg;
file_segment_cleanup_cb_called_with_flags = flags;
file_segment_cleanup_cb_called_with_arg = arg;
}
static void
test_evbuffer_file_segment_add_cleanup_cb(void* ptr)
{
char *tmpfilename = NULL;
int fd = -1;
struct evbuffer *evb = NULL;
struct evbuffer_file_segment *seg = NULL;
char const* arg = "token";
fd = regress_make_tmpfile("file_segment_test_file", 22, &tmpfilename);
evb = evbuffer_new();
tt_assert(evb);
seg = evbuffer_file_segment_new(fd, 0, -1, 0);
tt_assert(seg);
evbuffer_file_segment_add_cleanup_cb(
seg, &file_segment_cleanup_cp, (void*)arg);
tt_assert(fd != -1);
tt_assert(evbuffer_add_file_segment(evb, seg, 0, -1)!=-1);
evbuffer_validate(evb);
file_segment_cleanup_cb_called_in_time = 0;
evbuffer_file_segment_free(seg);
file_segment_cleanup_cb_called_in_time = 1;
evbuffer_free(evb);
tt_assert(file_segment_cleanup_cb_called_count == 1);
tt_assert(file_segment_cleanup_cb_called_in_time == 1);
tt_assert(file_segment_cleanup_cb_called_with == seg);
tt_assert(file_segment_cleanup_cb_called_with_flags == 0);
tt_assert(file_segment_cleanup_cb_called_with_arg == (void*)arg);
seg = NULL;
evb = NULL;
end:
if(evb)
evbuffer_free(evb);
if(seg)
evbuffer_file_segment_free(seg);
if (tmpfilename) {
unlink(tmpfilename);
free(tmpfilename);
}
}
#ifndef EVENT__DISABLE_MM_REPLACEMENT
static void *
failing_malloc(size_t how_much)
{
errno = ENOMEM;
return NULL;
}
#endif
static void
test_evbuffer_readln(void *ptr)
{
struct evbuffer *evb = evbuffer_new();
struct evbuffer *evb_tmp = evbuffer_new();
const char *s;
char *cp = NULL;
size_t sz;
#define tt_line_eq(content) \
TT_STMT_BEGIN \
if (!cp || sz != strlen(content) || strcmp(cp, content)) { \
TT_DIE(("Wanted %s; got %s [%d]", content, cp, (int)sz)); \
} \
TT_STMT_END
/* Test EOL_ANY. */
s = "complex silly newline\r\n\n\r\n\n\rmore\0\n";
evbuffer_add(evb, s, strlen(s)+2);
evbuffer_validate(evb);
cp = evbuffer_readln(evb, &sz, EVBUFFER_EOL_ANY);
tt_line_eq("complex silly newline");
free(cp);
evbuffer_validate(evb);
cp = evbuffer_readln(evb, &sz, EVBUFFER_EOL_ANY);
if (!cp || sz != 5 || memcmp(cp, "more\0\0", 6))
tt_abort_msg("Not as expected");
tt_uint_op(evbuffer_get_length(evb), ==, 0);
evbuffer_validate(evb);
s = "\nno newline";
evbuffer_add(evb, s, strlen(s));
free(cp);
evbuffer_validate(evb);
cp = evbuffer_readln(evb, &sz, EVBUFFER_EOL_ANY);
tt_line_eq("");
free(cp);
evbuffer_validate(evb);
cp = evbuffer_readln(evb, &sz, EVBUFFER_EOL_ANY);
tt_assert(!cp);
evbuffer_validate(evb);
evbuffer_drain(evb, evbuffer_get_length(evb));
tt_assert(evbuffer_get_length(evb) == 0);
evbuffer_validate(evb);
/* Test EOL_CRLF */
s = "Line with\rin the middle\nLine with good crlf\r\n\nfinal\n";
evbuffer_add(evb, s, strlen(s));
evbuffer_validate(evb);
cp = evbuffer_readln(evb, &sz, EVBUFFER_EOL_CRLF);
tt_line_eq("Line with\rin the middle");
free(cp);
evbuffer_validate(evb);