test-suite/tcp-banger2.c

   1 #include "config.h"
   2
   3 /* $Id$
   4
   5 /*
   6  * On some systems, FD_SETSIZE is set to something lower than the
   7  * actual number of files which can be opened.  IRIX is one case,
   8  * NetBSD is another.  So here we increase FD_SETSIZE to our
   9  * configure-discovered maximum *before* any system includes.
  10  */
  11 #define CHANGE_FD_SETSIZE 1
  12
  13 /* Cannot increase FD_SETSIZE on Linux */
  14 #if defined(_SQUID_LINUX_)
  15 #undef CHANGE_FD_SETSIZE
  16 #define CHANGE_FD_SETSIZE 0
  17 #endif
  18
  19 /* Cannot increase FD_SETSIZE on FreeBSD before 2.2.0, causes select(2)
  20  * to return EINVAL. */
  21 /* Marian Durkovic <marian@svf.stuba.sk> */
  22 /* Peter Wemm <peter@spinner.DIALix.COM> */
  23 #if defined(_SQUID_FREEBSD_)
  24 #include <osreldate.h>
  25 #if __FreeBSD_version < 220000
  26 #undef CHANGE_FD_SETSIZE
  27 #define CHANGE_FD_SETSIZE 0
  28 #endif
  29 #endif
  30
  31 /* Increase FD_SETSIZE if SQUID_MAXFD is bigger */
  32 #if CHANGE_FD_SETSIZE && SQUID_MAXFD > DEFAULT_FD_SETSIZE
  33 #define FD_SETSIZE SQUID_MAXFD
  34 #endif
  35
  36 #if HAVE_UNISTD_H
  37 #include <unistd.h>
  38 #endif
  39 #if HAVE_STDIO_H
  40 #include <stdio.h>
  41 #endif
  42 #if HAVE_FCNTL_H
  43 #include <fcntl.h>
  44 #endif
  45 #if HAVE_STRING_H
  46 #include <string.h>
  47 #endif
  48 #if HAVE_STRINGS_H
  49 #include <strings.h>
  50 #endif
  51 #if HAVE_SIGNAL_H
  52 #include <signal.h>
  53 #endif
  54 #if HAVE_TIME_H
  55 #include <time.h>
  56 #endif
  57 #if HAVE_SYS_SOCKET_H
  58 #include <sys/socket.h>
  59 #endif
  60 #if HAVE_NETINET_IN_H
  61 #include <netinet/in.h>
  62 #endif
  63 #if HAVE_ARPA_INET_H
  64 #include <arpa/inet.h>
  65 #endif
  66 #if HAVE_ERRNO_H
  67 #include <errno.h>
  68 #endif
  69 #if HAVE_SYS_STAT_H
  70 #include <sys/stat.h>
  71 #endif
  72 #if HAVE_ASSERT_H
  73 #include <assert.h>
  74 #endif
  75 #if HAVE_CTYPE_H
  76 #include <ctype.h>
  77 #endif
  78
  79 #define PROXY_PORT 3128
  80 #define PROXY_ADDR "127.0.0.1"
  81 #define READ_BUF_SZ 4096
  82
  83 static int proxy_port = PROXY_PORT;
  84 static char *proxy_addr = PROXY_ADDR;
  85 static char *progname;
  86 static int reqpersec;
  87 static int nrequests;
  88 static int opt_ims = 0;
  89 static int opt_range = 0;
  90 static int opt_accel = 0;
  91 static int max_connections = 64;
  92 static time_t lifetime = 60;
  93 static time_t process_lifetime = 86400;
  94 static struct timeval now;
  95 static long long total_bytes_written = 0;
  96 static long long total_bytes_read = 0;
  97 static int opt_checksum = 0;
  98 static char *custom_header = NULL;
  99 FILE *trace_file = NULL;
 100
 101 typedef void (CB) (int, void *);
 102
 103 struct _f {
 104     CB *cb;
 105     CB *ccb;
 106     void *data;
 107     time_t start;
 108 };
 109 struct _request {
 110     int fd;
 111     char *url;
 112     char method[16];
 113     char requestbodyfile[256];
 114     char buf[READ_BUF_SZ * 2 + 1];
 115     int headfound;
 116     int validsize;
 117     int bodysize;
 118     int content_length;
 119     int status;
 120     long validsum;
 121     long sum;
 122     int validstatus;
 123 };
 124
 125 struct _f FD[SQUID_MAXFD];
 126 int nfds = 0;
 127 int maxfd = 0;
 128
 129
 130 static void
 131 free_request(struct _request *r)
 132 {
 133     if (r->url)
 134         free(r->url);
 135     free(r);
 136 }
 137
 138 #define RFC1123_STRFTIME "%a, %d %b %Y %H:%M:%S GMT"
 139 char *
 140 mkrfc1123(t)
 141 time_t *t;
 142 {
 143     static char buf[128];
 144     struct tm *gmt = gmtime(t);
 145     buf[0] = '\0';
 146     (void) strftime(buf, 127, RFC1123_STRFTIME, gmt);
 147     return buf;
 148 }
 149
 150 void
 151 fd_close(int fd)
 152 {
 153     close(fd);
 154     if (FD[fd].ccb)
 155         FD[fd].ccb(fd, FD[fd].data);
 156     FD[fd].ccb = NULL;
 157     FD[fd].cb = NULL;
 158     FD[fd].data = NULL;
 159     nfds--;
 160     if (fd == maxfd) {
 161         while (fd > 0 && FD[fd].cb == NULL)
 162             fd--;
 163         maxfd = fd;
 164     }
 165 }
 166
 167 void
 168 fd_open(int fd, CB * cb, void *data, CB * ccb)
 169 {
 170     assert(fd < SQUID_MAXFD);
 171     FD[fd].cb = cb;
 172     FD[fd].ccb = ccb;
 173     FD[fd].data = data;
 174     FD[fd].start = now.tv_sec;
 175     if (fd > maxfd)
 176         maxfd = fd;
 177     nfds++;
 178 }
 179
 180 void
 181 sig_intr(int sig)
 182 {
 183     fd_close(0);
 184     nfds++;
 185     printf("\rWaiting for open connections to finish...\n");
 186     signal(sig, SIG_DFL);
 187 }
 188
 189 void
 190 read_reply(int fd, void *data)
 191 {
 192     struct _request *r = data;
 193     static unsigned char buf[READ_BUF_SZ];
 194     int len;
 195     int used = 0;
 196     if ((len = read(fd, buf, READ_BUF_SZ)) <= 0) {
 197         fd_close(fd);
 198         reqpersec++;
 199         nrequests++;
 200         return;
 201     }
 202     total_bytes_read += len;
 203     if (r->headfound < 2) {
 204         char *p, *header = NULL;
 205         int oldlen = strlen(r->buf);
 206         int newlen = oldlen + len;
 207         assert(oldlen <= READ_BUF_SZ);
 208         memcpy(r->buf + oldlen, buf, len);
 209         r->buf[newlen + 1] = '\0';
 210         for (p = r->buf; r->headfound < 2 && used < newlen; p++, used++) {
 211             switch (*p) {
 212             case '\n':
 213                 r->headfound++;
 214                 if (!header)
 215                     break;
 216                 /* Decode header */
 217                 if (strncmp(header, "HTTP", 4) == 0)
 218                     r->status = atoi(header + 8);
 219                 else if (strncasecmp(header, "Content-Length:", 15) == 0)
 220                     r->content_length = atoi(header + 15);
 221                 else if (strncasecmp(header, "X-Request-URI:", 14) == 0) {
 222                     /* Check URI */
 223                     if (strncmp(r->url, header + 15, strcspn(header + 15, "\r\n"))) {
 224                         char url[8192];
 225                         strncpy(url, header + 15, strcspn(header + 15, "\r\n"));
 226                         url[strcspn(header + 15, "\r\n")] = '\n';
 227                         fprintf(stderr, "ERROR: Sent %s received %s\n",
 228                                 r->url, url);
 229                     }
 230                 }
 231                 header = NULL;
 232                 break;
 233             case '\r':
 234                 break;
 235             default:
 236                 r->headfound = 0;
 237                 if (!header)
 238                     header = p;
 239                 break;
 240             }
 241         }
 242         if (header) {
 243             memmove(r->buf, header, newlen - (header - r->buf) + 1);
 244         }
 245         assert(used >= oldlen);
 246         used -= oldlen;
 247     }
 248     r->bodysize += len - used;
 249     if (opt_checksum) {
 250         for (; used < len; used++) {
 251             r->sum += buf[used];
 252         }
 253     }
 254 }
 255
 256 void
 257 reply_done(int fd, void *data)
 258 {
 259     struct _request *r = data;
 260     if (opt_range);             /* skip size checks for now */
 261     else if (strcmp(r->method, "HEAD") == 0);
 262     else if (r->bodysize != r->content_length && r->content_length >= 0)
 263         fprintf(stderr, "ERROR: %s got %d of %d bytes\n",
 264                 r->url, r->bodysize, r->content_length);
 265     else if (r->validsize >= 0) {
 266         if (r->validsize != r->bodysize)
 267             fprintf(stderr, "WARNING: %s size mismatch wanted %d bytes got %d\n",
 268                     r->url, r->validsize, r->bodysize);
 269         else if (opt_checksum && r->validsum != r->sum)
 270             fprintf(stderr, "WARNING: %s invalid checksum wanted 0x%lx got 0x%lx\n",
 271                     r->url, r->validsum, r->sum);
 272     }
 273     if (r->validstatus && r->status != r->validstatus) {
 274         fprintf(stderr, "WARNING: %s status mismatch wanted %d got %d\n",
 275                 r->url, r->validstatus, r->status);
 276     }
 277     if (trace_file) {
 278         if (opt_checksum)
 279             fprintf(trace_file, "%s %s %d %s %d 0x%lx\n",
 280                     r->method, r->url, r->status, r->requestbodyfile, r->bodysize, r->sum);
 281         else
 282             fprintf(trace_file, "%s %s %d %s %d\n",
 283                     r->method, r->url, r->status, r->requestbodyfile, r->bodysize);
 284     }
 285     free_request(r);
 286 }
 287
 288 struct _request *
 289 request(char *urlin) {
 290     int s = -1, f = -1;
 291     char buf[4096];
 292     char msg[8192];
 293     char *method, *url, *file, *size, *checksum, *status;
 294     char *host;
 295     char urlbuf[8192];
 296     int len, len2;
 297     time_t w;
 298     struct stat st;
 299     struct sockaddr_in S;
 300     struct _request *r;
 301     if (*urlin == '\0')
 302         return NULL;
 303     if ((s = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
 304         perror("socket");
 305         return NULL;
 306     }
 307     memset(&S, '\0', sizeof(struct sockaddr_in));
 308     S.sin_family = AF_INET;
 309     S.sin_port = htons(proxy_port);
 310     S.sin_addr.s_addr = inet_addr(proxy_addr);
 311     if (connect(s, (struct sockaddr *) &S, sizeof(S)) < 0) {
 312         close(s);
 313         perror("connect");
 314         return NULL;
 315     }
 316     strcpy(urlbuf, urlin);
 317     method = strtok(urlbuf, " ");
 318     url = strtok(NULL, " ");
 319     status = strtok(NULL, " ");
 320     file = strtok(NULL, " ");
 321     size = strtok(NULL, " ");
 322     checksum = strtok(NULL, " ");
 323     if (!url) {
 324         url = method;
 325         method = "GET";
 326     }
 327     if (!file)
 328         file = "-";
 329     if (!size)
 330         size = "-";
 331     if (!checksum)
 332         checksum = "-";
 333     r = calloc(1, sizeof *r);
 334     assert(r != NULL);
 335     r->url = strdup(url);
 336     assert(r->url);
 337     strcpy(r->method, method);
 338     strcpy(r->requestbodyfile, file);
 339     r->fd = s;
 340     if (size && strcmp(size, "-") != 0)
 341         r->validsize = atoi(size);
 342     else
 343         r->validsize = -1;      /* Unknown */
 344     if (checksum && strcmp(checksum, "-") != 0)
 345         r->validsum = strtoul(checksum, NULL, 0);
 346     if (status)
 347         r->validstatus = atoi(status);
 348     r->content_length = -1;     /* Unknown */
 349     if (opt_accel) {
 350         host = strchr(url, '/') + 2;
 351         url = strchr(host, '/');
 352     } else {
 353         host = NULL;
 354     }
 355     sprintf(msg, "%s %s HTTP/1.0\r\n", method, url);
 356     if (host) {
 357         url[0] = '\0';
 358         sprintf(buf, "Host: %s\r\n", host);
 359         strcat(msg, buf);
 360         url[0] = '/';
 361     }
 362     strcat(msg, "Accept: */*\r\n");
 363     if (opt_ims && (lrand48() & 0x03) == 0) {
 364         w = time(NULL) - (lrand48() & 0x3FFFF);
 365         sprintf(buf, "If-Modified-Since: %s\r\n", mkrfc850(&w));
 366         strcat(msg, buf);
 367     }
 368     if (file && strcmp(file, "-") != 0) {
 369         f = open(file, O_RDONLY);
 370         if (f < 0) {
 371             perror("open file");
 372             exit(1);
 373         }
 374         fstat(f, &st);
 375         sprintf(buf, "Content-Length: %d\r\n", (int) st.st_size);
 376         strcat(msg, buf);
 377     }
 378     if (opt_range && (lrand48() & 0x03) == 0) {
 379         int len;
 380         int count = 0;
 381         strcat(msg, "Range: bytes=");
 382         while (((len = (int) lrand48()) & 0x03) == 0 || !count) {
 383             const int offset = (int) lrand48();
 384             if (count)
 385                 strcat(msg, ",");
 386             switch (lrand48() & 0x03) {
 387             case 0:
 388                 sprintf(buf, "-%d", len);
 389                 break;
 390             case 1:
 391                 sprintf(buf, "%d-", offset);
 392                 break;
 393             default:
 394                 sprintf(buf, "%d-%d", offset, offset + len);
 395                 break;
 396             }
 397             strcat(msg, buf);
 398             count++;
 399         }
 400         strcat(msg, "\r\n");
 401     }
 402     strcat(msg, custom_header);
 403     strcat(msg, "\r\n");
 404     len = strlen(msg);
 405     if ((len2 = write(s, msg, len)) != len) {
 406         close(s);
 407         perror("write request");
 408         free_request(r);
 409         return NULL;
 410     } else
 411         total_bytes_written += len2;
 412     if (f >= 0) {
 413         while ((len = read(f, buf, sizeof(buf))) > 0) {
 414             len2 = write(s, buf, len);
 415             if (len2 < 0) {
 416                 perror("write body");
 417                 close(s);
 418                 free_request(r);
 419             }
 420         }
 421         if (len < 0) {
 422             perror("read body");
 423             exit(1);
 424         }
 425     }
 426     /*
 427      * if (fcntl(s, F_SETFL, O_NDELAY) < 0)
 428      * perror("fcntl O_NDELAY");
 429      */
 430     return r;
 431 }
 432
 433 void
 434 read_url(int fd, void *junk)
 435 {
 436     struct _request *r;
 437     static char buf[8192];
 438     char *t;
 439     buf[0] = '\0';
 440     if (fgets(buf, 8191, stdin) == NULL) {
 441         printf("Done Reading URLS\n");
 442         fd_close(0);
 443         nfds++;
 444         return;
 445     }
 446     if (buf[0] == '\0')
 447         return;
 448     if ((t = strchr(buf, '\n')))
 449         *t = '\0';
 450     r = request(buf);
 451     if (!r) {
 452         max_connections = nfds - 1;
 453         printf("NOTE: max_connections set at %d\n", max_connections);
 454     } else {
 455         fd_open(r->fd, read_reply, r, reply_done);
 456     }
 457 }
 458
 459 void
 460 usage(void)
 461 {
 462     fprintf(stderr, "usage: %s: -p port -h host -n max\n", progname);
 463     fprintf(stderr, " -t <tracefile>  Save request trace\n");
 464     fprintf(stderr, " -c              Check checksum agains trace\n");
 465     fprintf(stderr, " -i              Send random If-Modified-Since times\n");
 466     fprintf(stderr, " -l <seconds>    Connection lifetime timeout (default 60)\n");
 467     fprintf(stderr, " -a              Accelerator mode\n");
 468     fprintf(stderr, " -H <string>     Custom header\n");
 469 }
 470
 471 int
 472 main(argc, argv)
 473 int argc;
 474 char *argv[];
 475 {
 476     int i;
 477     int c;
 478     int dt;
 479     int j;
 480     fd_set R, R2;
 481     struct timeval start;
 482     struct timeval last;
 483     struct timeval to;
 484     setbuf(stdout, NULL);
 485     setbuf(stderr, NULL);
 486     progname = strdup(argv[0]);
 487     gettimeofday(&now, NULL);
 488     start = last = now;
 489     custom_header = strdup("");
 490     while ((c = getopt(argc, argv, "ap:h:H:n:icrl:L:t:")) != -1) {
 491         switch (c) {
 492         case 'a':
 493             opt_accel = 1;
 494             break;
 495         case 'p':
 496             proxy_port = atoi(optarg);
 497             break;
 498         case 'h':
 499             proxy_addr = strdup(optarg);
 500             break;
 501         case 'n':
 502             max_connections = atoi(optarg);
 503             break;
 504         case 'i':
 505             opt_ims = 1;
 506             break;
 507         case 'l':
 508             lifetime = (time_t) atoi(optarg);
 509             break;
 510         case 'L':
 511             process_lifetime = (time_t) atoi(optarg);
 512             break;
 513         case 'c':
 514             opt_checksum = 1;
 515             break;
 516         case 't':
 517             trace_file = fopen(optarg, "a");
 518             assert(trace_file);
 519             setbuf(trace_file, NULL);
 520             break;
 521         case 'r':
 522             opt_range = 1;
 523             break;
 524         case 'H':
 525             custom_header = realloc(custom_header, strlen(custom_header) + strlen(optarg) + 2 + 1);
 526             strcat(custom_header, optarg);
 527             strcat(custom_header, "\r\n");
 528             break;
 529         default:
 530             usage();
 531             return 1;
 532         }
 533     }
 534     fd_open(0, read_url, NULL, NULL);
 535     nfds--;
 536     signal(SIGINT, sig_intr);
 537     signal(SIGPIPE, SIG_IGN);
 538     FD_ZERO(&R2);
 539     while (nfds || FD[0].cb) {
 540         FD_ZERO(&R);
 541         to.tv_sec = 0;
 542         to.tv_usec = 100000;
 543         if (nfds < max_connections && FD[0].cb)
 544             FD_SET(0, &R);
 545         for (i = 1; i <= maxfd; i++) {
 546             if (FD[i].cb == NULL)
 547                 continue;
 548             if (now.tv_sec - FD[i].start > lifetime) {
 549                 fprintf(stderr, "WARNING: fd %d lifetime timeout\n", i);
 550                 fd_close(i);
 551                 continue;
 552             }
 553             FD_SET(i, &R);
 554         }
 555         if (select(maxfd + 1, &R, NULL, NULL, &to) < 0) {
 556             fprintf(stderr, "maxfd=%d\n", maxfd);
 557             if (errno != EINTR)
 558                 perror("select");
 559             continue;
 560         }
 561         gettimeofday(&now, NULL);
 562         for (i = 0; i <= maxfd; i++) {
 563             if (!FD_ISSET(i, &R))
 564                 continue;
 565             FD[i].cb(i, FD[i].data);
 566             if (nfds < max_connections && FD[0].cb) {
 567                 j = 0;
 568                 FD_SET(0, &R2);
 569                 to.tv_sec = 0;
 570                 to.tv_usec = 0;
 571                 if (select(1, &R2, NULL, NULL, &to) == 1)
 572                     FD[0].cb(0, FD[0].data);
 573             }
 574         }
 575         if (now.tv_sec > last.tv_sec) {
 576             last = now;
 577             dt = (int) (now.tv_sec - start.tv_sec);
 578             printf("T+ %6d: %9d req (%+4d), %4d conn, %3d/sec avg, %dmb, %dkb/sec avg\n",
 579                    dt,
 580                    nrequests,
 581                    reqpersec,
 582                    nfds,
 583                    (int) (nrequests / dt),
 584                    (int) (total_bytes_read / 1024 / 1024),
 585                    (int) (total_bytes_read / 1024 / dt));
 586             reqpersec = 0;
 587             /*
 588              * if (dt > process_lifetime)
 589              *     exit(0);
 590              */
 591         }
 592     }
 593     printf("Exiting normally\n");
 594     return 0;
 595 }