/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2023 Olaf Wintermann. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 "io.h"
#include "testutils.h"
CX_TEST(test_io_http_stream_parse_chunk_header_hdronly_first) {
char *str = strdup("100\r\n");
size_t len = strlen(str);
char *str2 = strdup("12345\r\n");
size_t len2 = strlen(str2);
char *str3 = strdup("FF\r\n");
size_t len3 = strlen(str3);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 5);
CX_TEST_ASSERT(chunklen == 0x100);
// test 2
ret = http_stream_parse_chunk_header(str2, len2, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 7);
CX_TEST_ASSERT(chunklen == 0x12345);
// test 3: hex test
ret = http_stream_parse_chunk_header(str3, len3, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 4);
CX_TEST_ASSERT(chunklen == 0xFF);
}
free(str);
free(str2);
}
CX_TEST(test_io_http_stream_parse_chunk_header_hdronly) {
char *str = strdup("\r\n100\r\n");
size_t len = strlen(str);
char *str2 = strdup("\nab\n");
size_t len2 = strlen(str2);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 7);
CX_TEST_ASSERT(chunklen == 0x100);
// test 2 with just \n as line break
ret = http_stream_parse_chunk_header(str2, len2, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 4);
CX_TEST_ASSERT(chunklen == 0xab);
}
free(str);
free(str2);
}
CX_TEST(test_io_http_stream_parse_chunk_header_hdronly_seq_fail) {
// test: after the first chunk header, \r\n is required before any new header
char *str = strdup("ff\r\n");
size_t len = strlen(str);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
}
free(str);
}
CX_TEST(test_io_http_stream_parse_chunk_header_hdr_data) {
char *str = strdup("\r\nb\r\nhello world\r\n");
size_t len = strlen(str);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 5);
}
free(str);
}
CX_TEST(test_io_http_stream_parse_chunk_header_empty) {
char *str = "";
size_t len = strlen(str);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 0);
ret = http_stream_parse_chunk_header(str, len, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 0);
}
}
CX_TEST(test_io_http_stream_parse_chunk_header_partial_first) {
char *str = strdup("123");
size_t len = strlen(str);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 0);
}
free(str);
}
CX_TEST(test_io_http_stream_parse_chunk_header_partial) {
char *str = strdup("123");
size_t len = strlen(str);
char *str2 = strdup("\r\n");
size_t len2 = strlen(str2);
char *str3 = strdup("\r");
size_t len3 = strlen(str3);
char *str4 = strdup("\r\n123");
size_t len4 = strlen(str4);
CX_TEST_DO {
int64_t chunklen;
int ret = http_stream_parse_chunk_header(str, len, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 0);
ret = http_stream_parse_chunk_header(str2, len2, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 0);
ret = http_stream_parse_chunk_header(str3, len3, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 0);
ret = http_stream_parse_chunk_header(str4, len4, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 0);
}
free(str);
free(str2);
free(str3);
free(str4);
}
CX_TEST(test_io_http_stream_parse_chunk_header_invalid) {
char *str = strdup("hello\r\n");
size_t len = strlen(str);
char *str2 = strdup("x4\r\n\r\n123\r\n");
size_t len2 = strlen(str2);
char *str3 = strdup("\r\n\r\n123\r\n");
size_t len3 = strlen(str3);
char *str4 = strdup("\r\n\r\nx123\r\n");
size_t len4 = strlen(str3);
char *str5 = strdup("\r\n\r\n1 2 3\r\n");
size_t len5 = strlen(str3);
char *str6 = strdup("\r\n\r\n1 23\r\n");
size_t len6 = strlen(str3);
CX_TEST_DO {
int64_t chunklen;
int ret;
ret = http_stream_parse_chunk_header(str, len, TRUE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str, len, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str2, len2, TRUE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str2, len2, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str3, len3, TRUE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str3, len3, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str4, len4, TRUE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str4, len4, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str5, len5, TRUE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str5, len5, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str6, len6, TRUE, &chunklen);
CX_TEST_ASSERT(ret == -1);
ret = http_stream_parse_chunk_header(str6, len6, FALSE, &chunklen);
CX_TEST_ASSERT(ret == -1);
}
free(str);
free(str2);
free(str3);
free(str4);
free(str5);
free(str6);
}
CX_TEST(test_io_http_stream_parse_chunk_header_zero) {
char *str = strdup("\r\n0\r\n\r\n");
size_t len = strlen(str);
char *str2 = strdup("0\r\n\r\n");
size_t len2 = strlen(str2);
// incomplete
char *str3 = strdup("\r\n0\r\n");
size_t len3 = strlen(str3);
char *str4 = strdup("\r\n0");
size_t len4 = strlen(str4);
CX_TEST_DO {
int64_t chunklen = -1;
int ret = http_stream_parse_chunk_header(str, len, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 7);
CX_TEST_ASSERT(chunklen == 0);
chunklen = -1;
ret = http_stream_parse_chunk_header(str2, len2, TRUE, &chunklen);
CX_TEST_ASSERT(ret == 5);
CX_TEST_ASSERT(chunklen == 0);
// expect 0 (incomplete)
ret = http_stream_parse_chunk_header(str3, len3, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 0);
ret = http_stream_parse_chunk_header(str4, len4, FALSE, &chunklen);
CX_TEST_ASSERT(ret == 0);
}
free(str);
free(str2);
free(str3);
free(str4);
}
CX_TEST(test_io_httpstream_write) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
CX_TEST_DO {
char *msg = "hello world!";
size_t msglen = strlen(msg);
ssize_t w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == msglen);
CX_TEST_ASSERT(!memcmp(st->buf->space, msg, msglen));
// test again, make sure the second message is written directly after the wirst one
char *msg2 = "test";
size_t msglen2 = strlen(msg2);
w = net_write(http, msg2, msglen2);
CX_TEST_ASSERT(w == msglen2);
CX_TEST_ASSERT(st->buf->size == msglen+msglen2);
CX_TEST_ASSERT(!memcmp(st->buf->space + msglen, msg2, msglen2));
}
testutil_destroy_session(sn);
}
CX_TEST(test_io_httpstream_chunked_write) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
CX_TEST_DO {
char *msg = "hello world!";
size_t msglen = strlen(msg);
char *bufmsg = "c\r\nhello world!\r\n";
size_t bufmsglen = strlen(bufmsg);
ssize_t w = net_write(http, msg, msglen);
cxstring s1 = cx_strn(st->buf->space, st->buf->size);
cxstring s2 = cx_strn(bufmsg, bufmsglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == bufmsglen);
CX_TEST_ASSERT(!cx_strcasecmp(s1, s2));
// write again
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == 2*bufmsglen);
cxstring s3 = cx_strn(st->buf->space+bufmsglen, bufmsglen);
CX_TEST_ASSERT(!cx_strcasecmp(s2, s3));
}
}
CX_TEST(test_io_httpstream_chunked_write_end) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
CX_TEST_DO {
char *msg = "hello world!";
size_t msglen = strlen(msg);
char *bufmsg = "c\r\nhello world!\r\n0\r\n\r\n";
size_t bufmsglen = strlen(bufmsg);
ssize_t w = net_write(http, msg, msglen);
net_finish(http);
cxstring s1 = cx_strn(st->buf->space, st->buf->size);
cxstring s2 = cx_strn(bufmsg, bufmsglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == bufmsglen);
CX_TEST_ASSERT(!cx_strcasecmp(s1, s2));
}
}
CX_TEST(test_io_httpstream_chunked_write_xx) {
// This test creates a giant buffer and writes it with
// chunked transfer encoding to the http stream with varying chunk length
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
CX_TEST_DO {
// create test data
CxBuffer *testdata = cxBufferCreate(NULL, 1024*1024*4, cxDefaultAllocator, 0);
for(size_t i=0;i<testdata->capacity;i++) {
cxBufferPut(testdata, 35+(i%91));
}
// write chunks, start with single diget chunk length and increase
// chunk size with each step
size_t pos = 0;
int j = 0;
ssize_t i=15;
while(pos<testdata->size) {
char *buf = testdata->space + pos;
size_t remaining = testdata->size - pos;
ssize_t len = pos + i < remaining ? i : remaining;
pos += len;
ssize_t w = net_write(http, buf, len);
CX_TEST_ASSERT(w == len);
i+=100; // increase chunk size
j++; // debug
}
// terminate chunk
net_finish(http);
// code below also used in test_io_httpstream_chunked_write_xx_limit
// make sure the output is correctly encoded
// extract chunks from st->buf by using http_stream_parse_chunk_header
// (which should be well-tested)
WSBool first_chunk = TRUE;
int64_t chunklen = 0;
char *buf = st->buf->space;
size_t bufsize = st->buf->size;
pos = 0; // st->buf position
size_t srcpos = 0; // testdata position
int debug_counter = 0;
while(pos < bufsize) {
ssize_t remaining = bufsize - pos;
ssize_t src_remaining = testdata->size - srcpos;
int ret = http_stream_parse_chunk_header(buf+pos, remaining, first_chunk, &chunklen);
first_chunk = FALSE;
// ret must always be > 0 (0: incomplete chunk header, -1: invalid syntax)
CX_TEST_ASSERT(ret > 0);
if(chunklen == 0) {
CX_TEST_ASSERT(src_remaining == 0);
break;
}
CX_TEST_ASSERT(chunklen <= src_remaining);
char *src_chunk = testdata->space+srcpos;
char *buf_chunk = buf+pos+ret;
CX_TEST_ASSERT(!memcmp(buf_chunk, src_chunk, chunklen));
pos += ret + chunklen;
srcpos += chunklen;
debug_counter++;
}
cxBufferFree(testdata);
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
}
}
CX_TEST(test_io_httpstream_chunked_write_partial_header) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
CX_TEST_DO {
memset(st->buf->space, 0, st->buf->capacity);
char *msg = "hello world!";
size_t msglen = strlen(msg);
st->max_write = 1; // limit the test stream max write size
io_set_max_writes(1);
// only 1 byte of the header is written, 0 bytes of msg
ssize_t w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 1);
CX_TEST_ASSERT(tolower(st->buf->space[0]) == 'c');
// next header byte: '\r'
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 2);
CX_TEST_ASSERT(st->buf->space[1] == '\r');
// next header byte: '\n'
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 3);
CX_TEST_ASSERT(st->buf->space[2] == '\n');
// next: content
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 1);
CX_TEST_ASSERT(st->buf->size == 4);
CX_TEST_ASSERT(st->buf->space[3] == msg[0]);
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
}
}
CX_TEST(test_io_httpstream_chunked_write_partial_data) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
CX_TEST_DO {
memset(st->buf->space, 0, st->buf->capacity);
char *msg = "hello world!";
size_t msglen = strlen(msg);
size_t msglen_orig = msglen;
// limit first write to 3 to only write the header
st->max_write = 3;
io_set_max_writes(1);
ssize_t w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 3);
CX_TEST_ASSERT(st->buf->space[0] == 'c');
CX_TEST_ASSERT(st->buf->space[2] == '\n');
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 3);
CX_TEST_ASSERT(st->buf->size == 6);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhel\0", 7));
msg += w;
msglen -= w;
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == 3);
CX_TEST_ASSERT(st->buf->size == 9);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello \0", 10));
st->max_write = 1024;
msg += w;
msglen -= w;
w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == 3 + msglen_orig + 2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n", st->buf->size));
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
}
}
CX_TEST(test_io_httpstream_chunked_write_partial_trailer) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
io_set_max_writes(1);
CX_TEST_DO {
memset(st->buf->space, 0, st->buf->capacity);
char *msg = "hello world!";
size_t msglen = strlen(msg);
char *msg2 = "newmsg";
size_t msglen2 = strlen(msg2);
char *msg3 = "msg3";
size_t msglen3 = strlen(msg3);
st->max_write = 3 + msglen; // header + msg, but without trailer
ssize_t w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == 3 + msglen);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\0", st->buf->size + 1));
st->max_write = 2 + 3 + msglen2; // trailer + new header + new msg, without new trailer
w = net_write(http, msg2, msglen2);
CX_TEST_ASSERT(w == msglen2);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 3 + msglen2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\r\nnewmsg\0", st->buf->size + 1));
// limit write to 1 byte: two writes required for trailer, net_write should return 0
st->max_write = 1;
w = net_write(http, "dummymsg", 8);
CX_TEST_ASSERT(w == 0);
w = net_write(http, "dummymsg", 8);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 3 + msglen2 + 2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\r\nnewmsg\r\n\0", st->buf->size + 1));
st->max_write = 1024;
w = net_write(http, msg3, msglen3);
CX_TEST_ASSERT(w == msglen3);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 3 + msglen2 + 2 + 3 + msglen3 + 2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\r\nnewmsg\r\n4\r\nmsg3\r\n", st->buf->size + 1));
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
}
}
CX_TEST(test_io_httpstream_chunked_write_partial_trailer_partial_header) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
io_set_max_writes(1);
CX_TEST_DO {
memset(st->buf->space, 0, st->buf->capacity);
char *msg = "hello world!";
size_t msglen = strlen(msg);
char *msg2 = "newmsg";
size_t msglen2 = strlen(msg2);
// Test: write partial trailer followed by partial header write
st->max_write = 3 + msglen + 1;
ssize_t w = net_write(http, msg, msglen);
CX_TEST_ASSERT(w == msglen);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 1);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\0", st->buf->size + 1));
st->max_write = 2; // write 1 trailer byte and 1 header byte
w = net_write(http, msg2, msglen2);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 1);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\0", st->buf->size + 1));
// force partial header write again
st->max_write = 1;
w = net_write(http, msg2, msglen2);
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\r\0", st->buf->size + 1));
st->max_write = 1024;
w = net_write(http, msg2, msglen2);
CX_TEST_ASSERT(w ==msglen2);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 3 + msglen2 + 2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\r\nnewmsg\r\n", st->buf->size + 1));
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
}
}
CX_TEST(test_io_httpstream_chunked_write_data_2x) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
io_set_max_writes(1);
CX_TEST_DO {
memset(st->buf->space, 0, st->buf->capacity);
// Test: First write a partial header, which forces a chunk with a specific
// size. After that, write a message, that is bigger than the first
// chunk, forcing a start of a second chunk, in one big writev op.
char *msg = "hello world!";
size_t msglen = strlen(msg);
char *msg2 = "newmsg";
size_t msglen2 = strlen(msg2);
char *msg_big = "hello world!newmsg";
size_t msglen_big = strlen(msg_big);
st->max_write = 1;
ssize_t w = net_write(http, msg, msglen); // first chunk: msg
CX_TEST_ASSERT(w == 0);
CX_TEST_ASSERT(st->buf->size == 1);
st->max_write = 1024;
w = net_write(http, msg_big, msglen_big); // first chunk + new chunk
CX_TEST_ASSERT(w == msglen_big);
CX_TEST_ASSERT(st->buf->size == 3 + msglen + 2 + 3 + msglen2 + 2);
CX_TEST_ASSERT(!memcmp(st->buf->space, "c\r\nhello world!\r\n6\r\nnewmsg\r\n", st->buf->size + 1));
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
}
}
CX_TEST(test_io_httpstream_chunked_write_xx_limit) {
Session *sn = testutil_session();
TestIOStream *st = testutil_iostream(2048, TRUE);
IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
httpstream_enable_chunked_write(http);
io_set_max_writes(1);
CX_TEST_DO {
// Test: create testdata and write it in varying chunk sizes, but
// limit TestIOStream to 1 to 3 byte writes
// create test data
CxBuffer *testdata = cxBufferCreate(NULL, 1024*16, cxDefaultAllocator, 0);
for(size_t i=0;i<testdata->capacity;i++) {
cxBufferPut(testdata, 35+(i%91));
}
st->max_write = 1;
size_t pos = 0;
int chunksize = 1;
while(pos < testdata->size) {
size_t available = testdata->size - pos;
char *chunk = testdata->space + pos;
size_t chunklen = chunksize > available ? available : chunksize;
// write chunk
size_t chunkpos = 0;
int max_writes = chunklen + 24; // max number of write attempts
int writes = 0;
while(chunkpos < chunklen) {
ssize_t w = net_write(http, chunk+chunkpos, chunklen-chunkpos);
CX_TEST_ASSERT(w >= 0);
chunkpos += w;
writes++;
CX_TEST_ASSERT(writes < max_writes);
}
pos += chunklen;
chunksize += 5;
// increase max write size at some point
if(pos + chunksize >= testdata->size) {
st->max_write = INT_MAX;
} else if(pos > 1024*2) {
if(pos < 1024*8) {
st->max_write = 2;
} else {
st->max_write = 3;
}
}
}
// terminate chunk
net_finish(http);
// same code as test_io_httpstream_chunked_write_xx
// make sure the output is correctly encoded
// extract chunks from st->buf by using http_stream_parse_chunk_header
// (which should be well-tested)
WSBool first_chunk = TRUE;
int64_t chunklen = 0;
char *buf = st->buf->space;
size_t bufsize = st->buf->size;
pos = 0; // st->buf position
size_t srcpos = 0; // testdata position
int debug_counter = 0;
while(pos < bufsize) {
ssize_t remaining = bufsize - pos;
ssize_t src_remaining = testdata->size - srcpos;
int ret = http_stream_parse_chunk_header(buf+pos, remaining, first_chunk, &chunklen);
first_chunk = FALSE;
// ret must always be > 0 (0: incomplete chunk header, -1: invalid syntax)
CX_TEST_ASSERT(ret > 0);
if(chunklen == 0) {
CX_TEST_ASSERT(src_remaining == 0);
break;
}
CX_TEST_ASSERT(chunklen <= src_remaining);
char *src_chunk = testdata->space+srcpos;
char *buf_chunk = buf+pos+ret;
CX_TEST_ASSERT(!memcmp(buf_chunk, src_chunk, chunklen));
pos += ret + chunklen;
srcpos += chunklen;
debug_counter++;
}
testutil_destroy_session(sn);
testutil_iostream_destroy(st);
cxBufferFree(testdata);
}
}