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apr/test/sendfile.c

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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <assert.h>
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include "apr_network_io.h"
#include "apr_errno.h"
#include "apr_general.h"
#include "apr_poll.h"
#include "apr_thread_proc.h"
#include "testutil.h"
#if !APR_HAS_SENDFILE
int main(void)
{
fprintf(stderr,
"This program won't work on this platform because there is no "
"support for sendfile().\n");
return 0;
}
#else /* !APR_HAS_SENDFILE */
#define FILE_LENGTH 200000
#define FILE_DATA_CHAR '0'
#define HDR1 "1234567890ABCD\n"
#define HDR2 "EFGH\n"
#define HDR3_LEN 80000
#define HDR3_CHAR '^'
#define TRL1 "IJKLMNOPQRSTUVWXYZ\n"
#define TRL2 "!@#$%&*()\n"
#define TRL3_LEN 90000
#define TRL3_CHAR '@'
#define TESTSF_PORT 8021
#define TESTFILE "testsf.dat"
typedef enum {BLK, NONBLK, TIMEOUT} client_socket_mode_t;
static void aprerr(const char *fn, apr_status_t rv)
{
char buf[120];
fprintf(stderr, "%s->%d/%s\n",
fn, rv, apr_strerror(rv, buf, sizeof buf));
exit(1);
}
static void apr_setup(apr_pool_t *p, apr_socket_t **sock, int *family)
{
apr_status_t rv;
*sock = NULL;
rv = apr_socket_create(sock, *family, SOCK_STREAM, 0, p);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_create()", rv);
}
if (*family == APR_UNSPEC) {
apr_sockaddr_t *localsa;
rv = apr_socket_addr_get(&localsa, APR_LOCAL, *sock);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_addr_get()", rv);
}
*family = localsa->family;
}
}
static void create_testfile(apr_pool_t *p, const char *fname)
{
apr_file_t *f = NULL;
apr_status_t rv;
char buf[120];
int i;
apr_finfo_t finfo;
printf("Creating a test file...\n");
rv = apr_file_open(&f, fname,
APR_FOPEN_CREATE | APR_FOPEN_WRITE | APR_FOPEN_TRUNCATE | APR_FOPEN_BUFFERED,
APR_UREAD | APR_UWRITE, p);
if (rv) {
aprerr("apr_file_open()", rv);
}
buf[0] = FILE_DATA_CHAR;
buf[1] = '\0';
for (i = 0; i < FILE_LENGTH; i++) {
/* exercise apr_file_putc() and apr_file_puts() on buffered files */
if ((i % 2) == 0) {
rv = apr_file_putc(buf[0], f);
if (rv) {
aprerr("apr_file_putc()", rv);
}
}
else {
rv = apr_file_puts(buf, f);
if (rv) {
aprerr("apr_file_puts()", rv);
}
}
}
rv = apr_file_close(f);
if (rv) {
aprerr("apr_file_close()", rv);
}
rv = apr_stat(&finfo, fname, APR_FINFO_NORM, p);
if (rv != APR_SUCCESS && ! APR_STATUS_IS_INCOMPLETE(rv)) {
aprerr("apr_stat()", rv);
}
if (finfo.size != FILE_LENGTH) {
fprintf(stderr,
"test file %s should be %ld-bytes long\n"
"instead it is %ld-bytes long\n",
fname,
(long int)FILE_LENGTH,
(long int)finfo.size);
exit(1);
}
}
static void spawn_server(apr_pool_t *p, apr_proc_t *out_proc)
{
apr_proc_t proc = {0};
apr_procattr_t *procattr;
apr_status_t rv;
const char *args[3];
rv = apr_procattr_create(&procattr, p);
if (rv != APR_SUCCESS) {
aprerr("apr_procattr_create()", rv);
}
rv = apr_procattr_io_set(procattr, APR_CHILD_BLOCK, APR_CHILD_BLOCK,
APR_CHILD_BLOCK);
if (rv != APR_SUCCESS) {
aprerr("apr_procattr_io_set()", rv);
}
rv = apr_procattr_cmdtype_set(procattr, APR_PROGRAM_ENV);
if (rv != APR_SUCCESS) {
aprerr("apr_procattr_cmdtype_set()", rv);
}
rv = apr_procattr_error_check_set(procattr, 1);
if (rv != APR_SUCCESS) {
aprerr("apr_procattr_error_check_set()", rv);
}
args[0] = "sendfile" EXTENSION;
args[1] = "server";
args[2] = NULL;
rv = apr_proc_create(&proc, TESTBINPATH "sendfile" EXTENSION, args, NULL, procattr, p);
if (rv != APR_SUCCESS) {
aprerr("apr_proc_create()", rv);
}
*out_proc = proc;
}
static int client(apr_pool_t *p, client_socket_mode_t socket_mode,
const char *host, int start_server)
{
apr_status_t rv, tmprv;
apr_socket_t *sock;
char buf[120];
apr_file_t *f = NULL;
apr_size_t len;
apr_size_t expected_len;
apr_off_t current_file_offset;
apr_hdtr_t hdtr;
struct iovec headers[3];
struct iovec trailers[3];
apr_size_t bytes_read;
apr_pollset_t *pset;
apr_int32_t nsocks;
int connect_tries = 1;
int i;
int family;
apr_sockaddr_t *destsa;
apr_proc_t server;
apr_interval_time_t connect_retry_interval = apr_time_from_msec(50);
if (start_server) {
spawn_server(p, &server);
connect_tries = 5; /* give it a chance to start up */
}
create_testfile(p, TESTFILE);
rv = apr_file_open(&f, TESTFILE, APR_FOPEN_READ, 0, p);
if (rv != APR_SUCCESS) {
aprerr("apr_file_open()", rv);
}
if (!host) {
host = "127.0.0.1";
}
family = APR_INET;
rv = apr_sockaddr_info_get(&destsa, host, family, TESTSF_PORT, 0, p);
if (rv != APR_SUCCESS) {
aprerr("apr_sockaddr_info_get()", rv);
}
while (connect_tries--) {
apr_setup(p, &sock, &family);
rv = apr_socket_connect(sock, destsa);
if (connect_tries && APR_STATUS_IS_ECONNREFUSED(rv)) {
apr_status_t tmprv = apr_socket_close(sock);
if (tmprv != APR_SUCCESS) {
aprerr("apr_socket_close()", tmprv);
}
apr_sleep(connect_retry_interval);
connect_retry_interval *= 2;
}
else {
break;
}
}
if (rv != APR_SUCCESS) {
aprerr("apr_socket_connect()", rv);
}
switch(socket_mode) {
case BLK:
/* leave it blocking */
break;
case NONBLK:
/* set it non-blocking */
rv = apr_socket_opt_set(sock, APR_SO_NONBLOCK, 1);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_opt_set(APR_SO_NONBLOCK)", rv);
}
break;
case TIMEOUT:
/* set a timeout */
rv = apr_socket_timeout_set(sock, 100 * APR_USEC_PER_SEC);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_opt_set(APR_SO_NONBLOCK)", rv);
exit(1);
}
break;
default:
assert(1 != 1);
}
printf("Sending the file...\n");
hdtr.headers = headers;
hdtr.numheaders = 3;
hdtr.headers[0].iov_base = HDR1;
hdtr.headers[0].iov_len = strlen(hdtr.headers[0].iov_base);
hdtr.headers[1].iov_base = HDR2;
hdtr.headers[1].iov_len = strlen(hdtr.headers[1].iov_base);
hdtr.headers[2].iov_base = malloc(HDR3_LEN);
assert(hdtr.headers[2].iov_base);
memset(hdtr.headers[2].iov_base, HDR3_CHAR, HDR3_LEN);
hdtr.headers[2].iov_len = HDR3_LEN;
hdtr.trailers = trailers;
hdtr.numtrailers = 3;
hdtr.trailers[0].iov_base = TRL1;
hdtr.trailers[0].iov_len = strlen(hdtr.trailers[0].iov_base);
hdtr.trailers[1].iov_base = TRL2;
hdtr.trailers[1].iov_len = strlen(hdtr.trailers[1].iov_base);
hdtr.trailers[2].iov_base = malloc(TRL3_LEN);
memset(hdtr.trailers[2].iov_base, TRL3_CHAR, TRL3_LEN);
assert(hdtr.trailers[2].iov_base);
hdtr.trailers[2].iov_len = TRL3_LEN;
expected_len =
strlen(HDR1) + strlen(HDR2) + HDR3_LEN +
strlen(TRL1) + strlen(TRL2) + TRL3_LEN +
FILE_LENGTH;
if (socket_mode == BLK) {
current_file_offset = 0;
len = FILE_LENGTH;
rv = apr_socket_sendfile(sock, f, &hdtr, &current_file_offset, &len, 0);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_sendfile()", rv);
}
printf("apr_socket_sendfile() updated offset with %ld\n",
(long int)current_file_offset);
printf("apr_socket_sendfile() updated len with %ld\n",
(long int)len);
printf("bytes really sent: %" APR_SIZE_T_FMT "\n",
expected_len);
if (len != expected_len) {
fprintf(stderr, "apr_socket_sendfile() didn't report the correct "
"number of bytes sent!\n");
exit(1);
}
}
else {
/* non-blocking... wooooooo */
apr_size_t total_bytes_sent;
apr_pollfd_t pfd;
pset = NULL;
rv = apr_pollset_create(&pset, 1, p, 0);
assert(!rv);
pfd.p = p;
pfd.desc_type = APR_POLL_SOCKET;
pfd.reqevents = APR_POLLOUT;
pfd.rtnevents = 0;
pfd.desc.s = sock;
pfd.client_data = NULL;
rv = apr_pollset_add(pset, &pfd);
assert(!rv);
total_bytes_sent = 0;
current_file_offset = 0;
len = FILE_LENGTH;
do {
apr_size_t tmplen;
tmplen = len; /* bytes remaining to send from the file */
printf("Calling apr_socket_sendfile()...\n");
printf("Headers (%d):\n", hdtr.numheaders);
for (i = 0; i < hdtr.numheaders; i++) {
printf("\t%ld bytes (%c)\n",
(long)hdtr.headers[i].iov_len,
*(char *)hdtr.headers[i].iov_base);
}
printf("File: %ld bytes from offset %ld\n",
(long)tmplen, (long)current_file_offset);
printf("Trailers (%d):\n", hdtr.numtrailers);
for (i = 0; i < hdtr.numtrailers; i++) {
printf("\t%ld bytes\n",
(long)hdtr.trailers[i].iov_len);
}
rv = apr_socket_sendfile(sock, f, &hdtr, &current_file_offset, &tmplen, 0);
printf("apr_socket_sendfile()->%d, sent %ld bytes\n", rv, (long)tmplen);
if (rv) {
if (APR_STATUS_IS_EAGAIN(rv)) {
assert(tmplen == 0);
nsocks = 1;
tmprv = apr_pollset_poll(pset, -1, &nsocks, NULL);
assert(!tmprv);
assert(nsocks == 1);
/* continue; */
}
}
total_bytes_sent += tmplen;
/* Adjust hdtr to compensate for partially-written
* data.
*/
/* First, skip over any header data which might have
* been written.
*/
while (tmplen && hdtr.numheaders) {
if (tmplen >= hdtr.headers[0].iov_len) {
tmplen -= hdtr.headers[0].iov_len;
--hdtr.numheaders;
++hdtr.headers;
}
else {
hdtr.headers[0].iov_len -= tmplen;
hdtr.headers[0].iov_base =
(char*) hdtr.headers[0].iov_base + tmplen;
tmplen = 0;
}
}
/* Now, skip over any file data which might have been
* written.
*/
if (tmplen <= len) {
current_file_offset += tmplen;
len -= tmplen;
tmplen = 0;
}
else {
tmplen -= len;
len = 0;
current_file_offset = 0;
}
/* Last, skip over any trailer data which might have
* been written.
*/
while (tmplen && hdtr.numtrailers) {
if (tmplen >= hdtr.trailers[0].iov_len) {
tmplen -= hdtr.trailers[0].iov_len;
--hdtr.numtrailers;
++hdtr.trailers;
}
else {
hdtr.trailers[0].iov_len -= tmplen;
hdtr.trailers[0].iov_base =
(char *)hdtr.trailers[0].iov_base + tmplen;
tmplen = 0;
}
}
} while (total_bytes_sent < expected_len &&
(rv == APR_SUCCESS ||
(APR_STATUS_IS_EAGAIN(rv) && socket_mode != TIMEOUT)));
if (total_bytes_sent != expected_len) {
fprintf(stderr,
"client problem: sent %ld of %ld bytes\n",
(long)total_bytes_sent, (long)expected_len);
exit(1);
}
if (rv) {
fprintf(stderr,
"client problem: rv %d\n",
rv);
exit(1);
}
}
current_file_offset = 0;
rv = apr_file_seek(f, APR_CUR, &current_file_offset);
if (rv != APR_SUCCESS) {
aprerr("apr_file_seek()", rv);
}
printf("After apr_socket_sendfile(), the kernel file pointer is "
"at offset %ld.\n",
(long int)current_file_offset);
rv = apr_socket_shutdown(sock, APR_SHUTDOWN_WRITE);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_shutdown()", rv);
}
/* in case this is the non-blocking test, set socket timeout;
* we're just waiting for EOF */
rv = apr_socket_timeout_set(sock, apr_time_from_sec(3));
if (rv != APR_SUCCESS) {
aprerr("apr_socket_timeout_set()", rv);
}
bytes_read = 1;
rv = apr_socket_recv(sock, buf, &bytes_read);
if (rv != APR_EOF) {
aprerr("apr_socket_recv() (expected APR_EOF)", rv);
}
if (bytes_read != 0) {
fprintf(stderr, "We expected to get 0 bytes read with APR_EOF\n"
"but instead we read %ld bytes.\n",
(long int)bytes_read);
exit(1);
}
printf("client: apr_socket_sendfile() worked as expected!\n");
rv = apr_file_remove(TESTFILE, p);
if (rv != APR_SUCCESS) {
aprerr("apr_file_remove()", rv);
}
if (start_server) {
apr_exit_why_e exitwhy;
apr_size_t nbytes;
char responsebuf[1024];
int exitcode;
rv = apr_file_pipe_timeout_set(server.out, apr_time_from_sec(2));
if (rv != APR_SUCCESS) {
aprerr("apr_file_pipe_timeout_set()", rv);
}
nbytes = sizeof(responsebuf);
rv = apr_file_read(server.out, responsebuf, &nbytes);
if (rv != APR_SUCCESS) {
aprerr("apr_file_read() messages from server", rv);
}
printf("%.*s", (int)nbytes, responsebuf);
rv = apr_proc_wait(&server, &exitcode, &exitwhy, APR_WAIT);
if (rv != APR_CHILD_DONE) {
aprerr("apr_proc_wait() (expected APR_CHILD_DONE)", rv);
}
if (exitcode != 0) {
fprintf(stderr, "sendfile server returned %d\n", exitcode);
exit(1);
}
}
return 0;
}
static int server(apr_pool_t *p)
{
apr_status_t rv;
apr_socket_t *sock;
char buf[120];
int i;
apr_socket_t *newsock = NULL;
apr_size_t bytes_read;
apr_sockaddr_t *localsa;
int family;
family = APR_INET;
apr_setup(p, &sock, &family);
rv = apr_socket_opt_set(sock, APR_SO_REUSEADDR, 1);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_opt_set()", rv);
}
rv = apr_sockaddr_info_get(&localsa, NULL, family, TESTSF_PORT, 0, p);
if (rv != APR_SUCCESS) {
aprerr("apr_sockaddr_info_get()", rv);
}
rv = apr_socket_bind(sock, localsa);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_bind()", rv);
}
rv = apr_socket_listen(sock, 5);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_listen()", rv);
}
printf("Waiting for a client to connect...\n");
rv = apr_socket_accept(&newsock, sock, p);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_accept()", rv);
}
printf("Processing a client...\n");
assert(sizeof buf > strlen(HDR1));
bytes_read = strlen(HDR1);
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != strlen(HDR1)) {
fprintf(stderr, "wrong data read (1)\n");
exit(1);
}
if (memcmp(buf, HDR1, strlen(HDR1))) {
fprintf(stderr, "wrong data read (2)\n");
fprintf(stderr, "received: `%.*s'\nexpected: `%s'\n",
(int)bytes_read, buf, HDR1);
exit(1);
}
assert(sizeof buf > strlen(HDR2));
bytes_read = strlen(HDR2);
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != strlen(HDR2)) {
fprintf(stderr, "wrong data read (3)\n");
exit(1);
}
if (memcmp(buf, HDR2, strlen(HDR2))) {
fprintf(stderr, "wrong data read (4)\n");
fprintf(stderr, "received: `%.*s'\nexpected: `%s'\n",
(int)bytes_read, buf, HDR2);
exit(1);
}
for (i = 0; i < HDR3_LEN; i++) {
bytes_read = 1;
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != 1) {
fprintf(stderr, "apr_socket_recv()->%ld bytes instead of 1\n",
(long int)bytes_read);
exit(1);
}
if (buf[0] != HDR3_CHAR) {
fprintf(stderr,
"problem with data read (byte %d of hdr 3):\n",
i);
fprintf(stderr, "read `%c' (0x%x) from client; expected "
"`%c'\n",
buf[0], buf[0], HDR3_CHAR);
exit(1);
}
}
for (i = 0; i < FILE_LENGTH; i++) {
bytes_read = 1;
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != 1) {
fprintf(stderr, "apr_socket_recv()->%ld bytes instead of 1\n",
(long int)bytes_read);
exit(1);
}
if (buf[0] != FILE_DATA_CHAR) {
fprintf(stderr,
"problem with data read (byte %d of file):\n",
i);
fprintf(stderr, "read `%c' (0x%x) from client; expected "
"`%c'\n",
buf[0], buf[0], FILE_DATA_CHAR);
exit(1);
}
}
assert(sizeof buf > strlen(TRL1));
bytes_read = strlen(TRL1);
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != strlen(TRL1)) {
fprintf(stderr, "wrong data read (5)\n");
exit(1);
}
if (memcmp(buf, TRL1, strlen(TRL1))) {
fprintf(stderr, "wrong data read (6)\n");
fprintf(stderr, "received: `%.*s'\nexpected: `%s'\n",
(int)bytes_read, buf, TRL1);
exit(1);
}
assert(sizeof buf > strlen(TRL2));
bytes_read = strlen(TRL2);
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != strlen(TRL2)) {
fprintf(stderr, "wrong data read (7)\n");
exit(1);
}
if (memcmp(buf, TRL2, strlen(TRL2))) {
fprintf(stderr, "wrong data read (8)\n");
fprintf(stderr, "received: `%.*s'\nexpected: `%s'\n",
(int)bytes_read, buf, TRL2);
exit(1);
}
for (i = 0; i < TRL3_LEN; i++) {
bytes_read = 1;
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_SUCCESS) {
aprerr("apr_socket_recv()", rv);
}
if (bytes_read != 1) {
fprintf(stderr, "apr_socket_recv()->%ld bytes instead of 1\n",
(long int)bytes_read);
exit(1);
}
if (buf[0] != TRL3_CHAR) {
fprintf(stderr,
"problem with data read (byte %d of trl 3):\n",
i);
fprintf(stderr, "read `%c' (0x%x) from client; expected "
"`%c'\n",
buf[0], buf[0], TRL3_CHAR);
exit(1);
}
}
bytes_read = 1;
rv = apr_socket_recv(newsock, buf, &bytes_read);
if (rv != APR_EOF) {
aprerr("apr_socket_recv() (expected APR_EOF)", rv);
}
if (bytes_read != 0) {
fprintf(stderr, "We expected to get 0 bytes read with APR_EOF\n"
"but instead we read %ld bytes (%c).\n",
(long int)bytes_read, buf[0]);
exit(1);
}
printf("server: apr_socket_sendfile() worked as expected!\n");
return 0;
}
int main(int argc, char *argv[])
{
apr_pool_t *p;
apr_status_t rv;
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN);
#endif
rv = apr_initialize();
if (rv != APR_SUCCESS) {
aprerr("apr_initialize()", rv);
}
atexit(apr_terminate);
rv = apr_pool_create(&p, NULL);
if (rv != APR_SUCCESS) {
aprerr("apr_pool_create()", rv);
}
if (argc >= 2 && !strcmp(argv[1], "client")) {
const char *host = NULL;
int mode = BLK;
int start_server = 0;
int i;
for (i = 2; i < argc; i++) {
if (!strcmp(argv[i], "blocking")) {
mode = BLK;
}
else if (!strcmp(argv[i], "timeout")) {
mode = TIMEOUT;
}
else if (!strcmp(argv[i], "nonblocking")) {
mode = NONBLK;
}
else if (!strcmp(argv[i], "startserver")) {
start_server = 1;
}
else {
host = argv[i];
}
}
return client(p, mode, host, start_server);
}
else if (argc == 2 && !strcmp(argv[1], "server")) {
return server(p);
}
fprintf(stderr,
"Usage: %s client {blocking|nonblocking|timeout} [startserver] [server-host]\n"
" %s server\n",
argv[0], argv[0]);
return -1;
}
#endif /* !APR_HAS_SENDFILE */
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