1 /*- 2 * Copyright (c) 2005-2008 Daniel Braniss <danny@cs.huji.ac.il> 3 * All rights reserved. 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 /* 28 | $Id: config.c,v 2.1 2006/11/12 08:06:51 danny Exp danny $ 29 */ 30 31 #include <sys/cdefs.h> 32 33 #include <stdlib.h> 34 #include <unistd.h> 35 #include <stdio.h> 36 #include <string.h> 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <time.h> 40 #include <ctype.h> 41 #include <camlib.h> 42 43 #include "iscsi.h" 44 #include "iscontrol.h" 45 46 /* 47 | ints 48 */ 49 #define OPT_port 1 50 #define OPT_tags 2 51 52 #define OPT_maxConnections 3 53 #define OPT_maxRecvDataSegmentLength 4 54 #define OPT_maxXmitDataSegmentLength 5 55 #define OPT_maxBurstLength 6 56 #define OPT_firstBurstLength 7 57 #define OPT_defaultTime2Wait 8 58 #define OPT_defaultTime2Retain 9 59 #define OPT_maxOutstandingR2T 10 60 #define OPT_errorRecoveryLevel 11 61 #define OPT_targetPortalGroupTag 12 62 #define OPT_headerDigest 13 63 #define OPT_dataDigest 14 64 /* 65 | Booleans 66 */ 67 #define OPT_initialR2T 16 68 #define OPT_immediateData 17 69 #define OPT_dataPDUInOrder 18 70 #define OPT_dataSequenceInOrder 19 71 /* 72 | strings 73 */ 74 #define OPT_sessionType 15 75 76 #define OPT_targetAddress 21 77 #define OPT_targetAlias 22 78 #define OPT_targetName 23 79 #define OPT_initiatorName 24 80 #define OPT_initiatorAlias 25 81 #define OPT_authMethod 26 82 83 #define OPT_chapSecret 27 84 #define OPT_chapIName 28 85 #define OPT_chapDigest 29 86 #define OPT_tgtChapName 30 87 #define OPT_tgtChapSecret 31 88 #define OPT_tgtChallengeLen 32 89 /* 90 | private 91 */ 92 #define OPT_maxluns 33 93 #define OPT_iqn 34 94 #define OPT_sockbufsize 35 95 96 #define _OFF(v) ((int)&((isc_opt_t *)NULL)->v) 97 #define _E(u, s, v) {.usage=u, .scope=s, .name=#v, .tokenID=OPT_##v} 98 99 textkey_t keyMap[] = { 100 _E(U_PR, S_PR, port), 101 _E(U_PR, S_PR, tags), 102 _E(U_PR, S_PR, maxluns), 103 _E(U_PR, S_PR, sockbufsize), 104 105 _E(U_PR, S_PR, iqn), 106 _E(U_PR, S_PR, chapSecret), 107 _E(U_PR, S_PR, chapIName), 108 _E(U_PR, S_PR, chapDigest), 109 _E(U_PR, S_PR, tgtChapName), 110 _E(U_PR, S_PR, tgtChapSecret), 111 _E(U_PR, S_PR, tgtChallengeLen), 112 113 _E(U_IO, S_CO, headerDigest), 114 _E(U_IO, S_CO, dataDigest), 115 116 _E(U_IO, S_CO, authMethod), 117 118 _E(U_LO, S_SW, maxConnections), 119 _E(U_IO, S_SW, targetName), 120 121 _E(U_IO, S_SW, initiatorName), 122 _E(U_ALL,S_SW, targetAlias), 123 _E(U_ALL,S_SW, initiatorAlias), 124 _E(U_ALL,S_SW, targetAddress), 125 126 _E(U_ALL,S_SW, targetPortalGroupTag), 127 128 _E(U_LO, S_SW, initialR2T), 129 _E(U_LO, S_SW, immediateData), 130 131 _E(U_ALL,S_CO, maxRecvDataSegmentLength), 132 _E(U_ALL,S_CO, maxXmitDataSegmentLength), 133 134 _E(U_LO, S_SW, maxBurstLength), 135 _E(U_LO, S_SW, firstBurstLength), 136 _E(U_LO, S_SW, defaultTime2Wait), 137 _E(U_LO, S_SW, defaultTime2Retain), 138 139 _E(U_LO, S_SW, maxOutstandingR2T), 140 _E(U_LO, S_SW, dataPDUInOrder), 141 _E(U_LO, S_SW, dataSequenceInOrder), 142 143 _E(U_LO, S_SW, errorRecoveryLevel), 144 145 _E(U_LO, S_SW, sessionType), 146 147 {0, 0, 0, 0} 148 }; 149 150 #define _OPT_INT(w) strtol((char *)w, NULL, 0) 151 #define _OPT_STR(w) (char *)(w) 152 153 static __inline int 154 _OPT_BOOL(char *w) 155 { 156 if(isalpha(*w)) 157 return strcasecmp(w, "TRUE") == 0; 158 else 159 return _OPT_INT(w); 160 } 161 162 #define _CASE(k, v) case OPT_##k: op->k = v; break 163 static void 164 setOption(isc_opt_t *op, int which, void *rval) 165 { 166 switch(which) { 167 _CASE(port, _OPT_INT(rval)); 168 _CASE(tags, _OPT_INT(rval)); 169 _CASE(maxluns, _OPT_INT(rval)); 170 _CASE(iqn, _OPT_STR(rval)); 171 _CASE(sockbufsize, _OPT_INT(rval)); 172 173 _CASE(maxConnections, _OPT_INT(rval)); 174 _CASE(maxRecvDataSegmentLength, _OPT_INT(rval)); 175 _CASE(maxXmitDataSegmentLength, _OPT_INT(rval)); 176 _CASE(maxBurstLength, _OPT_INT(rval)); 177 _CASE(firstBurstLength, _OPT_INT(rval)); 178 _CASE(defaultTime2Wait, _OPT_INT(rval)); 179 _CASE(defaultTime2Retain, _OPT_INT(rval)); 180 _CASE(maxOutstandingR2T, _OPT_INT(rval)); 181 _CASE(errorRecoveryLevel, _OPT_INT(rval)); 182 _CASE(targetPortalGroupTag, _OPT_INT(rval)); 183 _CASE(headerDigest, _OPT_STR(rval)); 184 _CASE(dataDigest, _OPT_STR(rval)); 185 186 _CASE(targetAddress, _OPT_STR(rval)); 187 _CASE(targetAlias, _OPT_STR(rval)); 188 _CASE(targetName, _OPT_STR(rval)); 189 _CASE(initiatorName, _OPT_STR(rval)); 190 _CASE(initiatorAlias, _OPT_STR(rval)); 191 _CASE(authMethod, _OPT_STR(rval)); 192 _CASE(chapSecret, _OPT_STR(rval)); 193 _CASE(chapIName, _OPT_STR(rval)); 194 _CASE(chapDigest, _OPT_STR(rval)); 195 196 _CASE(tgtChapName, _OPT_STR(rval)); 197 _CASE(tgtChapSecret, _OPT_STR(rval)); 198 199 _CASE(initialR2T, _OPT_BOOL(rval)); 200 _CASE(immediateData, _OPT_BOOL(rval)); 201 _CASE(dataPDUInOrder, _OPT_BOOL(rval)); 202 _CASE(dataSequenceInOrder, _OPT_BOOL(rval)); 203 } 204 } 205 206 static char * 207 getline(FILE *fd) 208 { 209 static char *sp, line[BUFSIZ]; 210 char *lp, *p; 211 212 do { 213 if(sp == NULL) 214 sp = fgets(line, sizeof line, fd); 215 216 if((lp = sp) == NULL) 217 break; 218 if((p = strchr(lp, '\n')) != NULL) 219 *p = 0; 220 if((p = strchr(lp, '#')) != NULL) 221 *p = 0; 222 if((p = strchr(lp, ';')) != NULL) { 223 *p++ = 0; 224 sp = p; 225 } else 226 sp = NULL; 227 if(*lp) 228 return lp; 229 } while (feof(fd) == 0); 230 return NULL; 231 } 232 233 static int 234 getConfig(FILE *fd, char *key, char **Ar, int *nargs) 235 { 236 char *lp, *p, **ar; 237 int state, len, n; 238 239 ar = Ar; 240 if(key) 241 len = strlen(key); 242 else 243 len = 0; 244 state = 0; 245 while((lp = getline(fd)) != NULL) { 246 for(; isspace(*lp); lp++) 247 ; 248 switch(state) { 249 case 0: 250 if((p = strchr(lp, '{')) != NULL) { 251 n = 0; 252 while((--p > lp) && *p && isspace(*p)); 253 n = p - lp; 254 if(len && strncmp(lp, key, MAX(n, len)) == 0) 255 state = 2; 256 else 257 state = 1; 258 continue; 259 } 260 break; 261 262 case 1: 263 if(*lp == '}') 264 state = 0; 265 continue; 266 267 case 2: 268 if(*lp == '}') 269 goto done; 270 271 break; 272 } 273 274 275 for(p = &lp[strlen(lp)-1]; isspace(*p); p--) 276 *p = 0; 277 if((*nargs)-- > 0) 278 *ar++ = strdup(lp); 279 } 280 281 done: 282 if(*nargs > 0) 283 *ar = 0; 284 *nargs = ar - Ar; 285 return ar - Ar; 286 } 287 288 static textkey_t * 289 keyLookup(char *key) 290 { 291 textkey_t *tk; 292 293 for(tk = keyMap; tk->name; tk++) { 294 if(strcasecmp(key, tk->name) == 0) 295 return tk; 296 } 297 return NULL; 298 } 299 300 static void 301 puke(isc_opt_t *op) 302 { 303 printf("%24s = %d\n", "port", op->port); 304 printf("%24s = %d\n", "tags", op->tags); 305 printf("%24s = %d\n", "maxluns", op->maxluns); 306 printf("%24s = %s\n", "iqn", op->iqn); 307 308 printf("%24s = %d\n", "maxConnections", op->maxConnections); 309 printf("%24s = %d\n", "maxRecvDataSegmentLength", op->maxRecvDataSegmentLength); 310 printf("%24s = %d\n", "maxXmitDataSegmentLength", op->maxRecvDataSegmentLength); 311 printf("%24s = %d\n", "maxBurstLength", op->maxBurstLength); 312 printf("%24s = %d\n", "firstBurstLength", op->firstBurstLength); 313 printf("%24s = %d\n", "defaultTime2Wait", op->defaultTime2Wait); 314 printf("%24s = %d\n", "defaultTime2Retain", op->defaultTime2Retain); 315 printf("%24s = %d\n", "maxOutstandingR2T", op->maxOutstandingR2T); 316 printf("%24s = %d\n", "errorRecoveryLevel", op->errorRecoveryLevel); 317 printf("%24s = %d\n", "targetPortalGroupTag", op->targetPortalGroupTag); 318 319 printf("%24s = %s\n", "headerDigest", op->headerDigest); 320 printf("%24s = %s\n", "dataDigest", op->dataDigest); 321 322 printf("%24s = %d\n", "initialR2T", op->initialR2T); 323 printf("%24s = %d\n", "immediateData", op->immediateData); 324 printf("%24s = %d\n", "dataPDUInOrder", op->dataPDUInOrder); 325 printf("%24s = %d\n", "dataSequenceInOrder", op->dataSequenceInOrder); 326 327 printf("%24s = %s\n", "sessionType", op->sessionType); 328 printf("%24s = %s\n", "targetAddress", op->targetAddress); 329 printf("%24s = %s\n", "targetAlias", op->targetAlias); 330 printf("%24s = %s\n", "targetName", op->targetName); 331 printf("%24s = %s\n", "initiatorName", op->initiatorName); 332 printf("%24s = %s\n", "initiatorAlias", op->initiatorAlias); 333 printf("%24s = %s\n", "authMethod", op->authMethod); 334 printf("%24s = %s\n", "chapSecret", op->chapSecret); 335 printf("%24s = %s\n", "chapIName", op->chapIName); 336 printf("%24s = %s\n", "tgtChapName", op->tgtChapName); 337 printf("%24s = %s\n", "tgtChapSecret", op->tgtChapSecret); 338 printf("%24s = %d\n", "tgttgtChallengeLen", op->tgtChallengeLen); 339 } 340 341 void 342 parseArgs(int nargs, char **args, isc_opt_t *op) 343 { 344 char **ar; 345 char *p, *v; 346 textkey_t *tk; 347 348 for(ar = args; nargs > 0; nargs--, ar++) { 349 p = strchr(*ar, '='); 350 if(p == NULL) 351 continue; 352 *p = 0; 353 v = p + 1; 354 while(isspace(*--p)) 355 *p = 0; 356 while(isspace(*v)) 357 v++; 358 if((tk = keyLookup(*ar)) == NULL) 359 continue; 360 setOption(op, tk->tokenID, v); 361 } 362 } 363 364 void 365 parseConfig(FILE *fd, char *key, isc_opt_t *op) 366 { 367 char *Ar[256]; 368 int cc; 369 370 cc = 256; 371 if(getConfig(fd, key, Ar, &cc)) 372 parseArgs(cc, Ar, op); 373 if(vflag) 374 puke(op); 375 } 376