1 /* 2 * iperf, Copyright (c) 2014-2018, 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 && test->outfile != stdout) { 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 && test->outfile != stdout) { 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: /* UNUSED */ 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 IEBADFORMAT: 141 snprintf(errstr, len, "bad format specifier (valid formats are in the set [kmgtKMGT])"); 142 break; 143 case IEMSS: 144 snprintf(errstr, len, "TCP MSS too large (maximum = %d bytes)", MAX_MSS); 145 break; 146 case IENOSENDFILE: 147 snprintf(errstr, len, "this OS does not support sendfile"); 148 break; 149 case IEOMIT: 150 snprintf(errstr, len, "bogus value for --omit"); 151 break; 152 case IEUNIMP: 153 snprintf(errstr, len, "an option you are trying to set is not implemented yet"); 154 break; 155 case IEFILE: 156 snprintf(errstr, len, "unable to open -F file"); 157 perr = 1; 158 break; 159 case IEBURST: 160 snprintf(errstr, len, "invalid burst count (maximum = %d)", MAX_BURST); 161 break; 162 case IEENDCONDITIONS: 163 snprintf(errstr, len, "only one test end condition (-t, -n, -k) may be specified"); 164 break; 165 case IELOGFILE: 166 snprintf(errstr, len, "unable to open log file"); 167 perr = 1; 168 break; 169 case IENOSCTP: 170 snprintf(errstr, len, "no SCTP support available"); 171 break; 172 case IENEWTEST: 173 snprintf(errstr, len, "unable to create a new test"); 174 perr = 1; 175 break; 176 case IEINITTEST: 177 snprintf(errstr, len, "test initialization failed"); 178 perr = 1; 179 break; 180 case IEAUTHTEST: 181 snprintf(errstr, len, "test authorization failed"); 182 break; 183 case IELISTEN: 184 snprintf(errstr, len, "unable to start listener for connections"); 185 perr = 1; 186 break; 187 case IECONNECT: 188 snprintf(errstr, len, "unable to connect to server"); 189 perr = 1; 190 break; 191 case IEACCEPT: 192 snprintf(errstr, len, "unable to accept connection from client"); 193 herr = 1; 194 perr = 1; 195 break; 196 case IESENDCOOKIE: 197 snprintf(errstr, len, "unable to send cookie to server"); 198 perr = 1; 199 break; 200 case IERECVCOOKIE: 201 snprintf(errstr, len, "unable to receive cookie at server"); 202 perr = 1; 203 break; 204 case IECTRLWRITE: 205 snprintf(errstr, len, "unable to write to the control socket"); 206 perr = 1; 207 break; 208 case IECTRLREAD: 209 snprintf(errstr, len, "unable to read from the control socket"); 210 perr = 1; 211 break; 212 case IECTRLCLOSE: 213 snprintf(errstr, len, "control socket has closed unexpectedly"); 214 break; 215 case IEMESSAGE: 216 snprintf(errstr, len, "received an unknown control message"); 217 break; 218 case IESENDMESSAGE: 219 snprintf(errstr, len, "unable to send control message"); 220 perr = 1; 221 break; 222 case IERECVMESSAGE: 223 snprintf(errstr, len, "unable to receive control message"); 224 perr = 1; 225 break; 226 case IESENDPARAMS: 227 snprintf(errstr, len, "unable to send parameters to server"); 228 perr = 1; 229 break; 230 case IERECVPARAMS: 231 snprintf(errstr, len, "unable to receive parameters from client"); 232 perr = 1; 233 break; 234 case IEPACKAGERESULTS: 235 snprintf(errstr, len, "unable to package results"); 236 perr = 1; 237 break; 238 case IESENDRESULTS: 239 snprintf(errstr, len, "unable to send results"); 240 perr = 1; 241 break; 242 case IERECVRESULTS: 243 snprintf(errstr, len, "unable to receive results"); 244 perr = 1; 245 break; 246 case IESELECT: 247 snprintf(errstr, len, "select failed"); 248 perr = 1; 249 break; 250 case IECLIENTTERM: 251 snprintf(errstr, len, "the client has terminated"); 252 break; 253 case IESERVERTERM: 254 snprintf(errstr, len, "the server has terminated"); 255 break; 256 case IEACCESSDENIED: 257 snprintf(errstr, len, "the server is busy running a test. try again later"); 258 break; 259 case IESETNODELAY: 260 snprintf(errstr, len, "unable to set TCP/SCTP NODELAY"); 261 perr = 1; 262 break; 263 case IESETMSS: 264 snprintf(errstr, len, "unable to set TCP/SCTP MSS"); 265 perr = 1; 266 break; 267 case IESETBUF: 268 snprintf(errstr, len, "unable to set socket buffer size"); 269 perr = 1; 270 break; 271 case IESETTOS: 272 snprintf(errstr, len, "unable to set IP TOS"); 273 perr = 1; 274 break; 275 case IESETCOS: 276 snprintf(errstr, len, "unable to set IPv6 traffic class"); 277 perr = 1; 278 break; 279 case IESETFLOW: 280 snprintf(errstr, len, "unable to set IPv6 flow label"); 281 break; 282 case IEREUSEADDR: 283 snprintf(errstr, len, "unable to reuse address on socket"); 284 perr = 1; 285 break; 286 case IENONBLOCKING: 287 snprintf(errstr, len, "unable to set socket to non-blocking"); 288 perr = 1; 289 break; 290 case IESETWINDOWSIZE: 291 snprintf(errstr, len, "unable to set socket window size"); 292 perr = 1; 293 break; 294 case IEPROTOCOL: 295 snprintf(errstr, len, "protocol does not exist"); 296 break; 297 case IEAFFINITY: 298 snprintf(errstr, len, "unable to set CPU affinity"); 299 perr = 1; 300 break; 301 case IEDAEMON: 302 snprintf(errstr, len, "unable to become a daemon"); 303 perr = 1; 304 break; 305 case IECREATESTREAM: 306 snprintf(errstr, len, "unable to create a new stream"); 307 herr = 1; 308 perr = 1; 309 break; 310 case IEINITSTREAM: 311 snprintf(errstr, len, "unable to initialize stream"); 312 herr = 1; 313 perr = 1; 314 break; 315 case IESTREAMLISTEN: 316 snprintf(errstr, len, "unable to start stream listener"); 317 perr = 1; 318 break; 319 case IESTREAMCONNECT: 320 snprintf(errstr, len, "unable to connect stream"); 321 herr = 1; 322 perr = 1; 323 break; 324 case IESTREAMACCEPT: 325 snprintf(errstr, len, "unable to accept stream connection"); 326 perr = 1; 327 break; 328 case IESTREAMWRITE: 329 snprintf(errstr, len, "unable to write to stream socket"); 330 perr = 1; 331 break; 332 case IESTREAMREAD: 333 snprintf(errstr, len, "unable to read from stream socket"); 334 perr = 1; 335 break; 336 case IESTREAMCLOSE: 337 snprintf(errstr, len, "stream socket has closed unexpectedly"); 338 break; 339 case IESTREAMID: 340 snprintf(errstr, len, "stream has an invalid id"); 341 break; 342 case IENEWTIMER: 343 snprintf(errstr, len, "unable to create new timer"); 344 perr = 1; 345 break; 346 case IEUPDATETIMER: 347 snprintf(errstr, len, "unable to update timer"); 348 perr = 1; 349 break; 350 case IESETCONGESTION: 351 snprintf(errstr, len, "unable to set TCP_CONGESTION: " 352 "Supplied congestion control algorithm not supported on this host"); 353 break; 354 case IEPIDFILE: 355 snprintf(errstr, len, "unable to write PID file"); 356 perr = 1; 357 break; 358 case IEV6ONLY: 359 snprintf(errstr, len, "Unable to set/reset IPV6_V6ONLY"); 360 perr = 1; 361 break; 362 case IESETSCTPDISABLEFRAG: 363 snprintf(errstr, len, "unable to set SCTP_DISABLE_FRAGMENTS"); 364 perr = 1; 365 break; 366 case IESETSCTPNSTREAM: 367 snprintf(errstr, len, "unable to set SCTP_INIT num of SCTP streams\n"); 368 perr = 1; 369 break; 370 case IESETPACING: 371 snprintf(errstr, len, "unable to set socket pacing"); 372 perr = 1; 373 break; 374 case IESETBUF2: 375 snprintf(errstr, len, "socket buffer size not set correctly"); 376 break; 377 case IEREVERSEBIDIR: 378 snprintf(errstr, len, "cannot be both reverse and bidirectional"); 379 break; 380 381 } 382 383 if (herr || perr) 384 strncat(errstr, ": ", len - strlen(errstr) - 1); 385 if (errno && perr) 386 strncat(errstr, strerror(errno), len - strlen(errstr) - 1); 387 388 return errstr; 389 } 390