1 /* 2 * iperf, Copyright (c) 2014, 2015, 2016, 2017, The Regents of the University of 3 * California, through Lawrence Berkeley National Laboratory (subject 4 * to receipt of any required approvals from the U.S. Dept. of 5 * Energy). All rights reserved. 6 * 7 * If you have questions about your rights to use or distribute this 8 * software, please contact Berkeley Lab's Technology Transfer 9 * Department at [email protected]. 10 * 11 * NOTICE. This software is owned by the U.S. Department of Energy. 12 * As such, the U.S. Government has been granted for itself and others 13 * acting on its behalf a paid-up, nonexclusive, irrevocable, 14 * worldwide license in the Software to reproduce, prepare derivative 15 * works, and perform publicly and display publicly. Beginning five 16 * (5) years after the date permission to assert copyright is obtained 17 * from the U.S. Department of Energy, and subject to any subsequent 18 * five (5) year renewals, the U.S. Government is granted for itself 19 * and others acting on its behalf a paid-up, nonexclusive, 20 * irrevocable, worldwide license in the Software to reproduce, 21 * prepare derivative works, distribute copies to the public, perform 22 * publicly and display publicly, and to permit others to do so. 23 * 24 * This code is distributed under a BSD style license, see the LICENSE 25 * file for complete information. 26 */ 27 #include <stdio.h> 28 #include <errno.h> 29 #include <netdb.h> 30 #include <string.h> 31 #include <stdlib.h> 32 #include <stdarg.h> 33 #include "iperf.h" 34 #include "iperf_api.h" 35 36 /* Do a printf to stderr. */ 37 void 38 iperf_err(struct iperf_test *test, const char *format, ...) 39 { 40 va_list argp; 41 char str[1000]; 42 43 va_start(argp, format); 44 vsnprintf(str, sizeof(str), format, argp); 45 if (test != NULL && test->json_output && test->json_top != NULL) 46 cJSON_AddStringToObject(test->json_top, "error", str); 47 else 48 if (test && test->outfile) { 49 fprintf(test->outfile, "iperf3: %s\n", str); 50 } 51 else { 52 fprintf(stderr, "iperf3: %s\n", str); 53 } 54 va_end(argp); 55 } 56 57 /* Do a printf to stderr or log file as appropriate, then exit. */ 58 void 59 iperf_errexit(struct iperf_test *test, const char *format, ...) 60 { 61 va_list argp; 62 char str[1000]; 63 64 va_start(argp, format); 65 vsnprintf(str, sizeof(str), format, argp); 66 if (test != NULL && test->json_output && test->json_top != NULL) { 67 cJSON_AddStringToObject(test->json_top, "error", str); 68 iperf_json_finish(test); 69 } else 70 if (test && test->outfile) { 71 fprintf(test->outfile, "iperf3: %s\n", str); 72 } 73 else { 74 fprintf(stderr, "iperf3: %s\n", str); 75 } 76 va_end(argp); 77 if (test) 78 iperf_delete_pidfile(test); 79 exit(1); 80 } 81 82 int i_errno; 83 84 char * 85 iperf_strerror(int int_errno) 86 { 87 static char errstr[256]; 88 int len, perr, herr; 89 perr = herr = 0; 90 91 len = sizeof(errstr); 92 memset(errstr, 0, len); 93 94 switch (int_errno) { 95 case IENONE: 96 snprintf(errstr, len, "no error"); 97 break; 98 case IESERVCLIENT: 99 snprintf(errstr, len, "cannot be both server and client"); 100 break; 101 case IENOROLE: 102 snprintf(errstr, len, "must either be a client (-c) or server (-s)"); 103 break; 104 case IESERVERONLY: 105 snprintf(errstr, len, "some option you are trying to set is server only"); 106 break; 107 case IECLIENTONLY: 108 snprintf(errstr, len, "some option you are trying to set is client only"); 109 break; 110 case IEDURATION: 111 snprintf(errstr, len, "test duration too long (maximum = %d seconds)", MAX_TIME); 112 break; 113 case IENUMSTREAMS: 114 snprintf(errstr, len, "number of parallel streams too large (maximum = %d)", MAX_STREAMS); 115 break; 116 case IEBLOCKSIZE: 117 snprintf(errstr, len, "block size too large (maximum = %d bytes)", MAX_BLOCKSIZE); 118 break; 119 case IEBUFSIZE: 120 snprintf(errstr, len, "socket buffer size too large (maximum = %d bytes)", MAX_TCP_BUFFER); 121 break; 122 case IEINTERVAL: 123 snprintf(errstr, len, "invalid report interval (min = %g, max = %g seconds)", MIN_INTERVAL, MAX_INTERVAL); 124 break; 125 case IEBIND: 126 snprintf(errstr, len, "--bind must be specified to use --cport"); 127 break; 128 case IEUDPBLOCKSIZE: 129 snprintf(errstr, len, "block size invalid (minimum = %d bytes, maximum = %d bytes)", MIN_UDP_BLOCKSIZE, MAX_UDP_BLOCKSIZE); 130 break; 131 case IEBADTOS: 132 snprintf(errstr, len, "bad TOS value (must be between 0 and 255 inclusive)"); 133 break; 134 case IESETCLIENTAUTH: 135 snprintf(errstr, len, "you must specify username (max 20 chars), password (max 20 chars) and a path to a valid public rsa client to be used"); 136 break; 137 case IESETSERVERAUTH: 138 snprintf(errstr, len, "you must specify path to a valid private rsa server to be used and a user credential file"); 139 break; 140 case IEMSS: 141 snprintf(errstr, len, "TCP MSS too large (maximum = %d bytes)", MAX_MSS); 142 break; 143 case IENOSENDFILE: 144 snprintf(errstr, len, "this OS does not support sendfile"); 145 break; 146 case IEOMIT: 147 snprintf(errstr, len, "bogus value for --omit"); 148 break; 149 case IEUNIMP: 150 snprintf(errstr, len, "an option you are trying to set is not implemented yet"); 151 break; 152 case IEFILE: 153 snprintf(errstr, len, "unable to open -F file"); 154 perr = 1; 155 break; 156 case IEBURST: 157 snprintf(errstr, len, "invalid burst count (maximum = %d)", MAX_BURST); 158 break; 159 case IEENDCONDITIONS: 160 snprintf(errstr, len, "only one test end condition (-t, -n, -k) may be specified"); 161 break; 162 case IELOGFILE: 163 snprintf(errstr, len, "unable to open log file"); 164 perr = 1; 165 break; 166 case IENOSCTP: 167 snprintf(errstr, len, "no SCTP support available"); 168 break; 169 case IENEWTEST: 170 snprintf(errstr, len, "unable to create a new test"); 171 perr = 1; 172 break; 173 case IEINITTEST: 174 snprintf(errstr, len, "test initialization failed"); 175 perr = 1; 176 break; 177 case IEAUTHTEST: 178 snprintf(errstr, len, "test authorization failed"); 179 break; 180 case IELISTEN: 181 snprintf(errstr, len, "unable to start listener for connections"); 182 perr = 1; 183 break; 184 case IECONNECT: 185 snprintf(errstr, len, "unable to connect to server"); 186 perr = 1; 187 break; 188 case IEACCEPT: 189 snprintf(errstr, len, "unable to accept connection from client"); 190 herr = 1; 191 perr = 1; 192 break; 193 case IESENDCOOKIE: 194 snprintf(errstr, len, "unable to send cookie to server"); 195 perr = 1; 196 break; 197 case IERECVCOOKIE: 198 snprintf(errstr, len, "unable to receive cookie at server"); 199 perr = 1; 200 break; 201 case IECTRLWRITE: 202 snprintf(errstr, len, "unable to write to the control socket"); 203 perr = 1; 204 break; 205 case IECTRLREAD: 206 snprintf(errstr, len, "unable to read from the control socket"); 207 perr = 1; 208 break; 209 case IECTRLCLOSE: 210 snprintf(errstr, len, "control socket has closed unexpectedly"); 211 break; 212 case IEMESSAGE: 213 snprintf(errstr, len, "received an unknown control message"); 214 break; 215 case IESENDMESSAGE: 216 snprintf(errstr, len, "unable to send control message"); 217 perr = 1; 218 break; 219 case IERECVMESSAGE: 220 snprintf(errstr, len, "unable to receive control message"); 221 perr = 1; 222 break; 223 case IESENDPARAMS: 224 snprintf(errstr, len, "unable to send parameters to server"); 225 perr = 1; 226 break; 227 case IERECVPARAMS: 228 snprintf(errstr, len, "unable to receive parameters from client"); 229 perr = 1; 230 break; 231 case IEPACKAGERESULTS: 232 snprintf(errstr, len, "unable to package results"); 233 perr = 1; 234 break; 235 case IESENDRESULTS: 236 snprintf(errstr, len, "unable to send results"); 237 perr = 1; 238 break; 239 case IERECVRESULTS: 240 snprintf(errstr, len, "unable to receive results"); 241 perr = 1; 242 break; 243 case IESELECT: 244 snprintf(errstr, len, "select failed"); 245 perr = 1; 246 break; 247 case IECLIENTTERM: 248 snprintf(errstr, len, "the client has terminated"); 249 break; 250 case IESERVERTERM: 251 snprintf(errstr, len, "the server has terminated"); 252 break; 253 case IEACCESSDENIED: 254 snprintf(errstr, len, "the server is busy running a test. try again later"); 255 break; 256 case IESETNODELAY: 257 snprintf(errstr, len, "unable to set TCP/SCTP NODELAY"); 258 perr = 1; 259 break; 260 case IESETMSS: 261 snprintf(errstr, len, "unable to set TCP/SCTP MSS"); 262 perr = 1; 263 break; 264 case IESETBUF: 265 snprintf(errstr, len, "unable to set socket buffer size"); 266 perr = 1; 267 break; 268 case IESETTOS: 269 snprintf(errstr, len, "unable to set IP TOS"); 270 perr = 1; 271 break; 272 case IESETCOS: 273 snprintf(errstr, len, "unable to set IPv6 traffic class"); 274 perr = 1; 275 break; 276 case IESETFLOW: 277 snprintf(errstr, len, "unable to set IPv6 flow label"); 278 break; 279 case IEREUSEADDR: 280 snprintf(errstr, len, "unable to reuse address on socket"); 281 perr = 1; 282 break; 283 case IENONBLOCKING: 284 snprintf(errstr, len, "unable to set socket to non-blocking"); 285 perr = 1; 286 break; 287 case IESETWINDOWSIZE: 288 snprintf(errstr, len, "unable to set socket window size"); 289 perr = 1; 290 break; 291 case IEPROTOCOL: 292 snprintf(errstr, len, "protocol does not exist"); 293 break; 294 case IEAFFINITY: 295 snprintf(errstr, len, "unable to set CPU affinity"); 296 perr = 1; 297 break; 298 case IEDAEMON: 299 snprintf(errstr, len, "unable to become a daemon"); 300 perr = 1; 301 break; 302 case IECREATESTREAM: 303 snprintf(errstr, len, "unable to create a new stream"); 304 herr = 1; 305 perr = 1; 306 break; 307 case IEINITSTREAM: 308 snprintf(errstr, len, "unable to initialize stream"); 309 herr = 1; 310 perr = 1; 311 break; 312 case IESTREAMLISTEN: 313 snprintf(errstr, len, "unable to start stream listener"); 314 perr = 1; 315 break; 316 case IESTREAMCONNECT: 317 snprintf(errstr, len, "unable to connect stream"); 318 herr = 1; 319 perr = 1; 320 break; 321 case IESTREAMACCEPT: 322 snprintf(errstr, len, "unable to accept stream connection"); 323 perr = 1; 324 break; 325 case IESTREAMWRITE: 326 snprintf(errstr, len, "unable to write to stream socket"); 327 perr = 1; 328 break; 329 case IESTREAMREAD: 330 snprintf(errstr, len, "unable to read from stream socket"); 331 perr = 1; 332 break; 333 case IESTREAMCLOSE: 334 snprintf(errstr, len, "stream socket has closed unexpectedly"); 335 break; 336 case IESTREAMID: 337 snprintf(errstr, len, "stream has an invalid id"); 338 break; 339 case IENEWTIMER: 340 snprintf(errstr, len, "unable to create new timer"); 341 perr = 1; 342 break; 343 case IEUPDATETIMER: 344 snprintf(errstr, len, "unable to update timer"); 345 perr = 1; 346 break; 347 case IESETCONGESTION: 348 snprintf(errstr, len, "unable to set TCP_CONGESTION: " 349 "Supplied congestion control algorithm not supported on this host"); 350 break; 351 case IEPIDFILE: 352 snprintf(errstr, len, "unable to write PID file"); 353 perr = 1; 354 break; 355 case IEV6ONLY: 356 snprintf(errstr, len, "Unable to set/reset IPV6_V6ONLY"); 357 perr = 1; 358 break; 359 case IESETSCTPDISABLEFRAG: 360 snprintf(errstr, len, "unable to set SCTP_DISABLE_FRAGMENTS"); 361 perr = 1; 362 break; 363 case IESETSCTPNSTREAM: 364 snprintf(errstr, len, "unable to set SCTP_INIT num of SCTP streams\n"); 365 perr = 1; 366 break; 367 case IESETPACING: 368 snprintf(errstr, len, "unable to set socket pacing"); 369 perr = 1; 370 break; 371 case IESETBUF2: 372 snprintf(errstr, len, "socket buffer size not set correctly"); 373 break; 374 375 } 376 377 if (herr || perr) 378 strncat(errstr, ": ", len - strlen(errstr) - 1); 379 if (errno && perr) 380 strncat(errstr, strerror(errno), len - strlen(errstr) - 1); 381 382 return errstr; 383 } 384