1 /* 2 * iperf, Copyright (c) 2014, 2015, 2016, 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 i_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 (i_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 too large (maximum = %d bytes)", 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 IEMSS: 135 snprintf(errstr, len, "TCP MSS too large (maximum = %d bytes)", MAX_MSS); 136 break; 137 case IENOSENDFILE: 138 snprintf(errstr, len, "this OS does not support sendfile"); 139 break; 140 case IEOMIT: 141 snprintf(errstr, len, "bogus value for --omit"); 142 break; 143 case IEUNIMP: 144 snprintf(errstr, len, "an option you are trying to set is not implemented yet"); 145 break; 146 case IEFILE: 147 snprintf(errstr, len, "unable to open -F file"); 148 perr = 1; 149 break; 150 case IEBURST: 151 snprintf(errstr, len, "invalid burst count (maximum = %d)", MAX_BURST); 152 break; 153 case IEENDCONDITIONS: 154 snprintf(errstr, len, "only one test end condition (-t, -n, -k) may be specified"); 155 break; 156 case IELOGFILE: 157 snprintf(errstr, len, "unable to open log file"); 158 perr = 1; 159 break; 160 case IENOSCTP: 161 snprintf(errstr, len, "no SCTP support available"); 162 break; 163 case IENEWTEST: 164 snprintf(errstr, len, "unable to create a new test"); 165 perr = 1; 166 break; 167 case IEINITTEST: 168 snprintf(errstr, len, "test initialization failed"); 169 perr = 1; 170 break; 171 case IELISTEN: 172 snprintf(errstr, len, "unable to start listener for connections"); 173 perr = 1; 174 break; 175 case IECONNECT: 176 snprintf(errstr, len, "unable to connect to server"); 177 perr = 1; 178 break; 179 case IEACCEPT: 180 snprintf(errstr, len, "unable to accept connection from client"); 181 herr = 1; 182 perr = 1; 183 break; 184 case IESENDCOOKIE: 185 snprintf(errstr, len, "unable to send cookie to server"); 186 perr = 1; 187 break; 188 case IERECVCOOKIE: 189 snprintf(errstr, len, "unable to receive cookie at server"); 190 perr = 1; 191 break; 192 case IECTRLWRITE: 193 snprintf(errstr, len, "unable to write to the control socket"); 194 perr = 1; 195 break; 196 case IECTRLREAD: 197 snprintf(errstr, len, "unable to read from the control socket"); 198 perr = 1; 199 break; 200 case IECTRLCLOSE: 201 snprintf(errstr, len, "control socket has closed unexpectedly"); 202 break; 203 case IEMESSAGE: 204 snprintf(errstr, len, "received an unknown control message"); 205 break; 206 case IESENDMESSAGE: 207 snprintf(errstr, len, "unable to send control message"); 208 perr = 1; 209 break; 210 case IERECVMESSAGE: 211 snprintf(errstr, len, "unable to receive control message"); 212 perr = 1; 213 break; 214 case IESENDPARAMS: 215 snprintf(errstr, len, "unable to send parameters to server"); 216 perr = 1; 217 break; 218 case IERECVPARAMS: 219 snprintf(errstr, len, "unable to receive parameters from client"); 220 perr = 1; 221 break; 222 case IEPACKAGERESULTS: 223 snprintf(errstr, len, "unable to package results"); 224 perr = 1; 225 break; 226 case IESENDRESULTS: 227 snprintf(errstr, len, "unable to send results"); 228 perr = 1; 229 break; 230 case IERECVRESULTS: 231 snprintf(errstr, len, "unable to receive results"); 232 perr = 1; 233 break; 234 case IESELECT: 235 snprintf(errstr, len, "select failed"); 236 perr = 1; 237 break; 238 case IECLIENTTERM: 239 snprintf(errstr, len, "the client has terminated"); 240 break; 241 case IESERVERTERM: 242 snprintf(errstr, len, "the server has terminated"); 243 break; 244 case IEACCESSDENIED: 245 snprintf(errstr, len, "the server is busy running a test. try again later"); 246 break; 247 case IESETNODELAY: 248 snprintf(errstr, len, "unable to set TCP/SCTP NODELAY"); 249 perr = 1; 250 break; 251 case IESETMSS: 252 snprintf(errstr, len, "unable to set TCP/SCTP MSS"); 253 perr = 1; 254 break; 255 case IESETBUF: 256 snprintf(errstr, len, "unable to set socket buffer size"); 257 perr = 1; 258 break; 259 case IESETTOS: 260 snprintf(errstr, len, "unable to set IP TOS"); 261 perr = 1; 262 break; 263 case IESETCOS: 264 snprintf(errstr, len, "unable to set IPv6 traffic class"); 265 perr = 1; 266 break; 267 case IESETFLOW: 268 snprintf(errstr, len, "unable to set IPv6 flow label"); 269 break; 270 case IEREUSEADDR: 271 snprintf(errstr, len, "unable to reuse address on socket"); 272 perr = 1; 273 break; 274 case IENONBLOCKING: 275 snprintf(errstr, len, "unable to set socket to non-blocking"); 276 perr = 1; 277 break; 278 case IESETWINDOWSIZE: 279 snprintf(errstr, len, "unable to set socket window size"); 280 perr = 1; 281 break; 282 case IEPROTOCOL: 283 snprintf(errstr, len, "protocol does not exist"); 284 break; 285 case IEAFFINITY: 286 snprintf(errstr, len, "unable to set CPU affinity"); 287 perr = 1; 288 break; 289 case IEDAEMON: 290 snprintf(errstr, len, "unable to become a daemon"); 291 perr = 1; 292 break; 293 case IECREATESTREAM: 294 snprintf(errstr, len, "unable to create a new stream"); 295 herr = 1; 296 perr = 1; 297 break; 298 case IEINITSTREAM: 299 snprintf(errstr, len, "unable to initialize stream"); 300 herr = 1; 301 perr = 1; 302 break; 303 case IESTREAMLISTEN: 304 snprintf(errstr, len, "unable to start stream listener"); 305 perr = 1; 306 break; 307 case IESTREAMCONNECT: 308 snprintf(errstr, len, "unable to connect stream"); 309 herr = 1; 310 perr = 1; 311 break; 312 case IESTREAMACCEPT: 313 snprintf(errstr, len, "unable to accept stream connection"); 314 perr = 1; 315 break; 316 case IESTREAMWRITE: 317 snprintf(errstr, len, "unable to write to stream socket"); 318 perr = 1; 319 break; 320 case IESTREAMREAD: 321 snprintf(errstr, len, "unable to read from stream socket"); 322 perr = 1; 323 break; 324 case IESTREAMCLOSE: 325 snprintf(errstr, len, "stream socket has closed unexpectedly"); 326 break; 327 case IESTREAMID: 328 snprintf(errstr, len, "stream has an invalid id"); 329 break; 330 case IENEWTIMER: 331 snprintf(errstr, len, "unable to create new timer"); 332 perr = 1; 333 break; 334 case IEUPDATETIMER: 335 snprintf(errstr, len, "unable to update timer"); 336 perr = 1; 337 break; 338 case IESETCONGESTION: 339 snprintf(errstr, len, "unable to set TCP_CONGESTION: " 340 "Supplied congestion control algorithm not supported on this host"); 341 break; 342 case IEPIDFILE: 343 snprintf(errstr, len, "unable to write PID file"); 344 perr = 1; 345 break; 346 case IEV6ONLY: 347 snprintf(errstr, len, "Unable to set/reset IPV6_V6ONLY"); 348 perr = 1; 349 break; 350 case IESETSCTPDISABLEFRAG: 351 snprintf(errstr, len, "unable to set SCTP_DISABLE_FRAGMENTS"); 352 perr = 1; 353 break; 354 case IESETSCTPNSTREAM: 355 snprintf(errstr, len, "unable to set SCTP_INIT num of SCTP streams\n"); 356 perr = 1; 357 break; 358 case IESETPACING: 359 snprintf(errstr, len, "unable to set socket pacing"); 360 perr = 1; 361 break; 362 case IESETBUF2: 363 snprintf(errstr, len, "socket buffer size not set correctly"); 364 break; 365 366 } 367 368 if (herr || perr) 369 strncat(errstr, ": ", len - strlen(errstr) - 1); 370 if (h_errno && herr) { 371 strncat(errstr, hstrerror(h_errno), len - strlen(errstr) - 1); 372 } else if (errno && perr) { 373 strncat(errstr, strerror(errno), len - strlen(errstr) - 1); 374 } 375 376 return errstr; 377 } 378