1 /* $NetBSD: regress_zlib.c,v 1.3 2017/01/31 23:17:40 christos Exp $ */ 2 /* 3 * Copyright (c) 2008-2012 Niels Provos and Nick Mathewson 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* The old tests here need assertions to work. */ 29 #undef NDEBUG 30 31 #ifdef _WIN32 32 #include <winsock2.h> 33 #include <windows.h> 34 #endif 35 36 #include "event2/event-config.h" 37 #include <sys/cdefs.h> 38 __RCSID("$NetBSD: regress_zlib.c,v 1.3 2017/01/31 23:17:40 christos Exp $"); 39 40 #include <sys/types.h> 41 #ifndef _WIN32 42 #include <sys/socket.h> 43 #include <sys/wait.h> 44 #include <unistd.h> 45 #include <netdb.h> 46 #endif 47 #include <signal.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 52 #include <assert.h> 53 #include <errno.h> 54 55 #include "event2/util.h" 56 #include "event2/event.h" 57 #include "event2/event_compat.h" 58 #include "event2/buffer.h" 59 #include "event2/bufferevent.h" 60 61 #include "regress.h" 62 #include "mm-internal.h" 63 64 /* zlib 1.2.4 and 1.2.5 do some "clever" things with macros. Instead of 65 saying "(defined(FOO) ? FOO : 0)" they like to say "FOO-0", on the theory 66 that nobody will care if the compile outputs a no-such-identifier warning. 67 68 Sorry, but we like -Werror over here, so I guess we need to define these. 69 I hope that zlib 1.2.6 doesn't break these too. 70 */ 71 #ifndef _LARGEFILE64_SOURCE 72 #define _LARGEFILE64_SOURCE 0 73 #endif 74 #ifndef _LFS64_LARGEFILE 75 #define _LFS64_LARGEFILE 0 76 #endif 77 #ifndef _FILE_OFFSET_BITS 78 #define _FILE_OFFSET_BITS 0 79 #endif 80 #ifndef off64_t 81 #define off64_t ev_int64_t 82 #endif 83 84 #include <zlib.h> 85 86 static int infilter_calls; 87 static int outfilter_calls; 88 static int readcb_finished; 89 static int writecb_finished; 90 static int errorcb_invoked; 91 92 /* 93 * Zlib filters 94 */ 95 96 static void 97 zlib_deflate_free(void *ctx) 98 { 99 z_streamp p = ctx; 100 101 assert(deflateEnd(p) == Z_OK); 102 mm_free(p); 103 } 104 105 static void 106 zlib_inflate_free(void *ctx) 107 { 108 z_streamp p = ctx; 109 110 assert(inflateEnd(p) == Z_OK); 111 mm_free(p); 112 } 113 114 static int 115 getstate(enum bufferevent_flush_mode state) 116 { 117 switch (state) { 118 case BEV_FINISHED: 119 return Z_FINISH; 120 case BEV_FLUSH: 121 return Z_SYNC_FLUSH; 122 case BEV_NORMAL: 123 default: 124 return Z_NO_FLUSH; 125 } 126 } 127 128 /* 129 * The input filter is triggered only on new input read from the network. 130 * That means all input data needs to be consumed or the filter needs to 131 * initiate its own triggering via a timeout. 132 */ 133 static enum bufferevent_filter_result 134 zlib_input_filter(struct evbuffer *src, struct evbuffer *dst, 135 ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx) 136 { 137 struct evbuffer_iovec v_in[1]; 138 struct evbuffer_iovec v_out[1]; 139 int nread, nwrite; 140 int res, n; 141 142 z_streamp p = ctx; 143 144 do { 145 /* let's do some decompression */ 146 n = evbuffer_peek(src, -1, NULL, v_in, 1); 147 if (n) { 148 p->avail_in = v_in[0].iov_len; 149 p->next_in = (unsigned char *)v_in[0].iov_base; 150 } else { 151 p->avail_in = 0; 152 p->next_in = 0; 153 } 154 155 evbuffer_reserve_space(dst, 4096, v_out, 1); 156 p->next_out = (unsigned char *)v_out[0].iov_base; 157 p->avail_out = v_out[0].iov_len; 158 159 /* we need to flush zlib if we got a flush */ 160 res = inflate(p, getstate(state)); 161 162 /* let's figure out how much was compressed */ 163 nread = v_in[0].iov_len - p->avail_in; 164 nwrite = v_out[0].iov_len - p->avail_out; 165 166 evbuffer_drain(src, nread); 167 v_out[0].iov_len = nwrite; 168 evbuffer_commit_space(dst, v_out, 1); 169 170 if (res==Z_BUF_ERROR) { 171 /* We're out of space, or out of decodeable input. 172 Only if nwrite == 0 assume the latter. 173 */ 174 if (nwrite == 0) 175 return BEV_NEED_MORE; 176 } else { 177 assert(res == Z_OK || res == Z_STREAM_END); 178 } 179 180 } while (evbuffer_get_length(src) > 0); 181 182 ++infilter_calls; 183 184 return (BEV_OK); 185 } 186 187 static enum bufferevent_filter_result 188 zlib_output_filter(struct evbuffer *src, struct evbuffer *dst, 189 ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx) 190 { 191 struct evbuffer_iovec v_in[1]; 192 struct evbuffer_iovec v_out[1]; 193 int nread, nwrite; 194 int res, n; 195 196 z_streamp p = ctx; 197 198 do { 199 /* let's do some compression */ 200 n = evbuffer_peek(src, -1, NULL, v_in, 1); 201 if (n) { 202 p->avail_in = v_in[0].iov_len; 203 p->next_in = (unsigned char *)v_in[0].iov_base; 204 } else { 205 p->avail_in = 0; 206 p->next_in = 0; 207 } 208 209 evbuffer_reserve_space(dst, 4096, v_out, 1); 210 p->next_out = (unsigned char *)v_out[0].iov_base; 211 p->avail_out = v_out[0].iov_len; 212 213 /* we need to flush zlib if we got a flush */ 214 res = deflate(p, getstate(state)); 215 216 /* let's figure out how much was decompressed */ 217 nread = v_in[0].iov_len - p->avail_in; 218 nwrite = v_out[0].iov_len - p->avail_out; 219 220 evbuffer_drain(src, nread); 221 v_out[0].iov_len = nwrite; 222 evbuffer_commit_space(dst, v_out, 1); 223 224 if (res==Z_BUF_ERROR) { 225 /* We're out of space, or out of decodeable input. 226 Only if nwrite == 0 assume the latter. 227 */ 228 if (nwrite == 0) 229 return BEV_NEED_MORE; 230 } else { 231 assert(res == Z_OK || res == Z_STREAM_END); 232 } 233 234 } while (evbuffer_get_length(src) > 0); 235 236 ++outfilter_calls; 237 238 return (BEV_OK); 239 } 240 241 /* 242 * simple bufferevent test (over transparent zlib treatment) 243 */ 244 245 static void 246 readcb(struct bufferevent *bev, void *arg) 247 { 248 if (evbuffer_get_length(bufferevent_get_input(bev)) == 8333) { 249 struct evbuffer *evbuf = evbuffer_new(); 250 assert(evbuf != NULL); 251 252 /* gratuitous test of bufferevent_read_buffer */ 253 bufferevent_read_buffer(bev, evbuf); 254 255 bufferevent_disable(bev, EV_READ); 256 257 if (evbuffer_get_length(evbuf) == 8333) { 258 ++readcb_finished; 259 } 260 261 evbuffer_free(evbuf); 262 } 263 } 264 265 static void 266 writecb(struct bufferevent *bev, void *arg) 267 { 268 if (evbuffer_get_length(bufferevent_get_output(bev)) == 0) { 269 ++writecb_finished; 270 } 271 } 272 273 static void 274 errorcb(struct bufferevent *bev, short what, void *arg) 275 { 276 errorcb_invoked = 1; 277 } 278 279 void 280 test_bufferevent_zlib(void *arg) 281 { 282 struct bufferevent *bev1=NULL, *bev2=NULL; 283 char buffer[8333]; 284 z_stream *z_input, *z_output; 285 int i, r; 286 evutil_socket_t xpair[2] = {-1, -1}; 287 (void)arg; 288 289 infilter_calls = outfilter_calls = readcb_finished = writecb_finished 290 = errorcb_invoked = 0; 291 292 if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, xpair) == -1) { 293 tt_abort_perror("socketpair"); 294 } 295 296 evutil_make_socket_nonblocking(xpair[0]); 297 evutil_make_socket_nonblocking(xpair[1]); 298 299 bev1 = bufferevent_socket_new(NULL, xpair[0], 0); 300 bev2 = bufferevent_socket_new(NULL, xpair[1], 0); 301 302 z_output = mm_calloc(sizeof(*z_output), 1); 303 r = deflateInit(z_output, Z_DEFAULT_COMPRESSION); 304 tt_int_op(r, ==, Z_OK); 305 z_input = mm_calloc(sizeof(*z_input), 1); 306 r = inflateInit(z_input); 307 tt_int_op(r, ==, Z_OK); 308 309 /* initialize filters */ 310 bev1 = bufferevent_filter_new(bev1, NULL, zlib_output_filter, 311 BEV_OPT_CLOSE_ON_FREE, zlib_deflate_free, z_output); 312 bev2 = bufferevent_filter_new(bev2, zlib_input_filter, 313 NULL, BEV_OPT_CLOSE_ON_FREE, zlib_inflate_free, z_input); 314 bufferevent_setcb(bev1, readcb, writecb, errorcb, NULL); 315 bufferevent_setcb(bev2, readcb, writecb, errorcb, NULL); 316 317 bufferevent_disable(bev1, EV_READ); 318 bufferevent_enable(bev1, EV_WRITE); 319 320 bufferevent_enable(bev2, EV_READ); 321 322 for (i = 0; i < (int)sizeof(buffer); i++) 323 buffer[i] = i; 324 325 /* break it up into multiple buffer chains */ 326 bufferevent_write(bev1, buffer, 1800); 327 bufferevent_write(bev1, buffer + 1800, sizeof(buffer) - 1800); 328 329 /* we are done writing - we need to flush everything */ 330 bufferevent_flush(bev1, EV_WRITE, BEV_FINISHED); 331 332 event_dispatch(); 333 334 tt_want(infilter_calls); 335 tt_want(outfilter_calls); 336 tt_want(readcb_finished); 337 tt_want(writecb_finished); 338 tt_want(!errorcb_invoked); 339 340 test_ok = 1; 341 end: 342 if (bev1) 343 bufferevent_free(bev1); 344 if (bev2) 345 bufferevent_free(bev2); 346 347 if (xpair[0] >= 0) 348 evutil_closesocket(xpair[0]); 349 if (xpair[1] >= 0) 350 evutil_closesocket(xpair[1]); 351 } 352
Indexes created Tue Feb 24 01:34:59 UTC 2026