![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to vars.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / libelwix / src|
Return to vars.c CVS log | Up to [ELWIX - Embedded LightWeight unIX -] / libelwix / src |
1.1 misho 1: /*************************************************************************
2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
1.9.56.1! misho 6: * $Id: vars.c,v 1.9 2016/05/18 12:47:42 misho Exp $
1.1 misho 7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.9.56.1! misho 15: Copyright 2004 - 2022
1.1 misho 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47:
48:
1.4 misho 49: static inline int
1.1 misho 50: vars2buffer(u_char * __restrict buf, int buflen, int be, array_t * __restrict vars)
51: {
52: int Limit = 0;
53: register int i;
54: ait_val_t *v, *val;
55: u_char *dat;
56:
57: assert(buf);
58: assert(vars);
59: if (!buf || !vars)
60: return -1;
61: if (!buflen || !array_Size(vars))
62: return 0;
63: be = !!be;
64:
65: Limit = sizeof(ait_val_t) * array_Size(vars);
66: if (Limit > buflen) {
67: elwix_SetErr(EMSGSIZE, "Short buffer buflen=%d needed min %d",
68: buflen, Limit);
69: return -1;
70: } else {
71: memset(buf, 0, buflen);
72:
73: v = (ait_val_t*) buf;
74: dat = buf + Limit;
75: }
76:
77: /* marshaling */
78: for (i = 0; i < array_Size(vars); i++) {
79: val = array(vars, i, ait_val_t*);
80:
81: v[i].val_type = val->val_type;
82: AIT_IN(&v[i]) = 1;
83: AIT_BE(&v[i]) = be;
84: AIT_LE(&v[i]) = !be;
85: if (AIT_BE(&v[i])) {
86: AIT_KEY(&v[i]) = htobe16(AIT_KEY(val));
87: AIT_LEN(&v[i]) = htobe32(AIT_LEN(val));
88: }
89: if (AIT_LE(&v[i])) {
90: AIT_KEY(&v[i]) = htole16(AIT_KEY(val));
91: AIT_LEN(&v[i]) = htole32(AIT_LEN(val));
92: }
93:
94: switch (AIT_TYPE(val)) {
95: case blob:
96: case f32:
97: case f64:
98: case i8:
99: case i16:
100: case i32:
101: case i64:
102: case u8:
103: case u16:
104: case u32:
105: case u64:
106: if (AIT_BE(&v[i]))
107: v[i].val.net = htobe64(val->val.net);
108: if (AIT_LE(&v[i]))
109: v[i].val.net = htole64(val->val.net);
110: break;
111: case data:
112: if (AIT_LEN(val) > buflen - Limit) {
113: elwix_SetErr(EMSGSIZE, "Short buffer buflen=%d "
114: "needed min %d", buflen, Limit + AIT_LEN(val));
115: return -1;
116: } else
117: Limit += AIT_LEN(val);
118:
119: memcpy(dat, val->val_data, AIT_LEN(val));
120: /* Debug:: data offset in packet, not matter for anything! */
121: v[i].val.net = dat - buf;
122: dat += AIT_LEN(val);
123: break;
124: case buffer:
125: case string:
1.5 misho 126: case ptr:
1.1 misho 127: if (AIT_LEN(val) > buflen - Limit) {
128: elwix_SetErr(EMSGSIZE, "Short buffer buflen=%d "
129: "needed min %d", buflen, Limit + AIT_LEN(val));
130: return -1;
131: } else
132: Limit += AIT_LEN(val);
133:
134: memcpy(dat, val->val.buffer, AIT_LEN(val));
135: /* Debug:: data offset in packet, not matter for anything! */
136: v[i].val.net = dat - buf;
137: dat += AIT_LEN(val);
138: break;
139: default:
140: elwix_SetErr(EINVAL, "Unsupported variable type=%d at element #%d",
141: AIT_TYPE(val), i);
142: return -1;
143: }
144: }
145:
146: return Limit;
147: }
148:
1.4 misho 149: static inline array_t *
1.1 misho 150: buffer2vars(u_char * __restrict buf, int buflen, int vnum, int zcpy)
151: {
152: array_t *vars;
153: int Limit = 0;
154: register int i;
155: ait_val_t *v, *val;
156: u_char *dat;
157:
158: assert(buf);
159: if (!buf || !buflen || !vnum)
160: return NULL;
161:
162: Limit = sizeof(ait_val_t) * vnum;
163: if (Limit > buflen) {
164: elwix_SetErr(EMSGSIZE, "Short buffer buflen=%d needed min %d",
165: buflen, Limit);
166: return NULL;
167: } else {
168: if (!(vars = array_Init(vnum)))
169: return NULL;
170:
171: v = (ait_val_t*) buf;
172: dat = buf + Limit;
173: }
174:
175: /* de-marshaling */
176: for (i = 0; i < array_Size(vars); i++) {
177: if (!zcpy) {
178: val = e_malloc(sizeof(ait_val_t));
179: if (!val) {
180: if (!zcpy)
181: array_Free(vars);
182: array_Destroy(&vars);
183: return NULL;
184: }
185: AIT_IN(val) = 0;
186: } else {
187: val = v + i;
188: AIT_IN(val) = 1;
189: }
190: array_Set(vars, i, val);
191:
192: val->val_type = v[i].val_type;
193: AIT_BE(val) = AIT_BE(&v[i]);
194: AIT_LE(val) = AIT_LE(&v[i]);
195: if (AIT_BE(val)) {
196: AIT_LEN(val) = be32toh(AIT_LEN(&v[i]));
197: AIT_KEY(val) = be16toh(AIT_KEY(&v[i]));
198: }
199: if (AIT_LE(val)) {
200: AIT_LEN(val) = le32toh(AIT_LEN(&v[i]));
201: AIT_KEY(val) = le16toh(AIT_KEY(&v[i]));
202: }
203:
204: switch (AIT_TYPE(val)) {
205: case blob:
206: case f32:
207: case f64:
208: case i8:
209: case i16:
210: case i32:
211: case i64:
212: case u8:
213: case u16:
214: case u32:
215: case u64:
216: if (AIT_BE(val))
217: val->val.net = be64toh(v[i].val.net);
218: if (AIT_LE(val))
219: val->val.net = le64toh(v[i].val.net);
220: break;
221: case data:
1.5 misho 222: case ptr:
223: /* WARNING:: remap data and ptr type to buffer! */
1.1 misho 224: val->val_type = buffer;
225: case buffer:
226: case string:
227: if (!zcpy) {
228: val->val.buffer = e_malloc(AIT_LEN(val));
229: if (!val->val.buffer) {
230: array_Free(vars);
231: array_Destroy(&vars);
232: return NULL;
233: } else
234: memcpy(val->val.buffer, dat, AIT_LEN(val));
235: } else
236: val->val.buffer = dat;
237: dat += AIT_LEN(val);
238: break;
239: default:
240: elwix_SetErr(EINVAL, "Unsupported variable type=%d at element #%d",
241: AIT_TYPE(val), i);
242: if (!zcpy)
243: array_Free(vars);
244: array_Destroy(&vars);
245: return NULL;
246: }
247: }
248:
249: return vars;
250: }
251:
1.9.56.1! misho 252: /*
! 253: * ait_vars2tlv() - Marshaling data from array with variables to TLV buffer
! 254: *
! 255: * @buf = Buffer
! 256: * @buflen = Size of buffer
! 257: * @vars = Variable array
! 258: * return: -1 error, 0 nothing done or >0 size of marshaled data
! 259: */
! 260: int
! 261: ait_vars2tlv(u_char * __restrict buf, int buflen, array_t * __restrict vars)
! 262: {
! 263: int Limit = 0;
! 264: register int i;
! 265: ait_val_t *val;
! 266: u_char *dat;
! 267:
! 268: assert(buf);
! 269: assert(vars);
! 270: if (!buf || !vars)
! 271: return -1;
! 272: if (!buflen || !array_Size(vars))
! 273: return 0;
! 274:
! 275: /* calculate amount of data into buffer */
! 276: for (i = 0, Limit = 0; i < array_Size(vars); i++,
! 277: Limit += 5 + AIT_LEN(array(vars, i, ait_val_t*)));
! 278: if (Limit > buflen) {
! 279: elwix_SetErr(EMSGSIZE, "Short buffer buflen=%d needed min %d",
! 280: buflen, Limit);
! 281: return -1;
! 282: } else
! 283: memset(buf, 0, buflen);
! 284:
! 285: /* marshaling */
! 286: for (i = 0, dat = buf; i < array_Size(vars) && dat < (buf + Limit); i++) {
! 287: val = array(vars, i, ait_val_t*);
! 288:
! 289: *dat++ = AIT_TYPE(val);
! 290:
! 291: *((uint32_t*) dat) = htonl(AIT_LEN(val));
! 292: dat += sizeof(uint32_t);
! 293:
! 294: switch (AIT_TYPE(val)) {
! 295: case i8:
! 296: *((int8_t*) dat) = AIT_GET_I8(val);
! 297: break;
! 298: case u8:
! 299: *((uint8_t*) dat) = AIT_GET_U8(val);
! 300: break;
! 301: case i16:
! 302: *((int16_t*) dat) = AIT_GET_I16(val);
! 303: break;
! 304: case u16:
! 305: *((uint16_t*) dat) = AIT_GET_U16(val);
! 306: break;
! 307: case i32:
! 308: *((int32_t*) dat) = AIT_GET_I32(val);
! 309: break;
! 310: case blob:
! 311: case u32:
! 312: *((uint32_t*) dat) = AIT_GET_U32(val);
! 313: break;
! 314: case i64:
! 315: *((int64_t*) dat) = AIT_GET_I64(val);
! 316: break;
! 317: case u64:
! 318: *((uint64_t*) dat) = AIT_GET_U64(val);
! 319: break;
! 320: case f32:
! 321: *((float*) dat) = AIT_GET_F32(val);
! 322: break;
! 323: case f64:
! 324: *((double*) dat) = AIT_GET_F64(val);
! 325: break;
! 326: case data:
! 327: memcpy(dat, AIT_GET_DATA(val), AIT_LEN(val));
! 328: break;
! 329: case buffer:
! 330: memcpy(dat, AIT_GET_BUF(val), AIT_LEN(val));
! 331: break;
! 332: case string:
! 333: memcpy(dat, AIT_GET_STR(val), AIT_LEN(val));
! 334: break;
! 335: case ptr:
! 336: memcpy(dat, AIT_GET_PTR(val), AIT_LEN(val));
! 337: break;
! 338: default:
! 339: elwix_SetErr(EINVAL, "Unsupported variable type=%d at element #%d",
! 340: AIT_TYPE(val), i);
! 341: return -1;
! 342: }
! 343: dat += AIT_LEN(val);
! 344: }
! 345:
! 346: return Limit;
! 347: }
! 348:
! 349: /*
! 350: * ait_tlv2vars() - De-marshaling data from TLV buffer to array with variables
! 351: *
! 352: * @buf = Buffer
! 353: * @buflen = Size of buffer
! 354: * return: =NULL error, !=NULL allocated variable array, after use must free with ait_freeVars()
! 355: */
! 356: array_t *
! 357: ait_tlv2vars(u_char * __restrict buf, int buflen)
! 358: {
! 359: array_t *vars;
! 360: register int i;
! 361: ait_val_t *val;
! 362: u_char *dat;
! 363:
! 364: assert(buf);
! 365: if (!buf || !buflen)
! 366: return NULL;
! 367:
! 368: if (!(vars = ait_allocVars(1)))
! 369: return NULL;
! 370:
! 371: /* de-marshaling */
! 372: for (i = 0, dat = buf; i < buflen; i++) {
! 373: val = ait_getVars(&vars, i);
! 374: if (!val) {
! 375: ait_freeVars(&vars);
! 376: return NULL;
! 377: }
! 378:
! 379: val->val_type = *dat++;
! 380: AIT_LEN(val) = ntohl(*((uint32_t*) dat));
! 381: dat += sizeof(uint32_t);
! 382:
! 383: switch (AIT_TYPE(val)) {
! 384: case f32:
! 385: AIT_SET_F32(val, *((float*) dat));
! 386: break;
! 387: case f64:
! 388: AIT_SET_F64(val, *((double*) dat));
! 389: break;
! 390: case i8:
! 391: AIT_SET_I8(val, *((int8_t*) dat));
! 392: break;
! 393: case i16:
! 394: AIT_SET_I16(val, *((int16_t*) dat));
! 395: break;
! 396: case i32:
! 397: AIT_SET_I32(val, *((int32_t*) dat));
! 398: break;
! 399: case i64:
! 400: AIT_SET_I64(val, *((int64_t*) dat));
! 401: break;
! 402: case u8:
! 403: AIT_SET_U8(val, *((uint8_t*) dat));
! 404: break;
! 405: case u16:
! 406: AIT_SET_U16(val, *((uint16_t*) dat));
! 407: break;
! 408: case blob:
! 409: case u32:
! 410: AIT_SET_U32(val, *((uint32_t*) dat));
! 411: break;
! 412: case u64:
! 413: AIT_SET_U64(val, *((uint64_t*) dat));
! 414: break;
! 415: case data:
! 416: AIT_SET_DATA(val, dat, AIT_LEN(val));
! 417: break;
! 418: case ptr:
! 419: case buffer:
! 420: AIT_SET_BUF(val, dat, AIT_LEN(val));
! 421: break;
! 422: case string:
! 423: AIT_SET_STR(val, (char*) dat);
! 424: break;
! 425: default:
! 426: elwix_SetErr(EINVAL, "Unsupported variable type=%d at element #%d",
! 427: AIT_TYPE(val), i);
! 428: ait_freeVars(&vars);
! 429: return NULL;
! 430: }
! 431: dat += AIT_LEN(val);
! 432: }
! 433:
! 434: return vars;
! 435: }
1.1 misho 436:
437: /* buffer marshaling with swapping bytes to network order */
438:
439: /*
440: * ait_vars2buffer() - Marshaling data from array with variables to buffer
441: *
442: * @buf = Buffer
443: * @buflen = Size of buffer
444: * @vars = Variable array
445: * return: -1 error, 0 nothing done or >0 size of marshaled data
446: */
1.4 misho 447: int
1.1 misho 448: ait_vars2buffer(u_char * __restrict buf, int buflen, array_t * __restrict vars)
449: {
450: return vars2buffer(buf, buflen, 42, vars);
451: }
452:
453: /*
454: * ait_buffer2vars() - De-marshaling data from buffer to array with variables
455: *
456: * @buf = Buffer
457: * @buflen = Size of buffer
458: * @vnum = Number of variables into buffer
459: * @zcpy = Zero-copy for variables, if !=0 don't use array_Free() for free variables and
460: *DON'T MODIFY OR DESTROY BUFFER*. =0 call array_Free() before array_Destroy()
461: * return: =NULL error, !=NULL allocated variable array, after use must free with array_Destroy()
462: */
1.4 misho 463: array_t *
1.1 misho 464: ait_buffer2vars(u_char * __restrict buf, int buflen, int vnum, int zcpy)
465: {
466: return buffer2vars(buf, buflen, vnum, zcpy);
467: }
468:
469: /* buffer marshaling without swapping bytes to network order */
470:
471: /*
472: * ait_vars2map() - Marshaling data from array with variables to memory map
473: *
474: * @buf = Buffer
475: * @buflen = Size of buffer
476: * @vars = Variable array
477: * return: -1 error, 0 nothing done or >0 size of marshaled data
478: */
1.4 misho 479: int
1.1 misho 480: ait_vars2map(u_char *buf, int buflen, array_t *vars)
481: {
482: return vars2buffer(buf, buflen, 0, vars);
483: }
484:
485: /*
486: * ait_map2vars() - De-marshaling data from memory map to array with variables
487: *
488: * @buf = Buffer
489: * @buflen = Size of buffer
490: * @vnum = Number of variables into buffer
491: * @zcpy = Zero-copy for variables, if !=0 don't use array_Free() for free variables and
492: *DON'T MODIFY OR DESTROY BUFFER*. =0 call array_Free() before array_Destroy()
493: * return: =NULL error, !=NULL allocated variable array, after use must free with array_Destroy()
494: */
1.4 misho 495: array_t *
1.1 misho 496: ait_map2vars(u_char *buf, int buflen, int vnum, int zcpy)
497: {
498: return buffer2vars(buf, buflen, vnum, zcpy);
499: }
500:
1.9.56.1! misho 501: /*
! 502: * ait_array2vars() - Build array with variables from Null Terminated String Array
! 503: *
! 504: * @args = Null-terminated array with strings
! 505: * @dn = Convert numbers from strings to numbers into variables
! 506: * return: =NULL error, !=NULL allocated variable array, after use must free with ait_freeVars()
! 507: */
! 508: array_t *
! 509: ait_array2vars(const char **args, int dn)
! 510: {
! 511: array_t *vars;
! 512: ait_val_t *val;
! 513: register int i;
! 514: long n;
! 515: float f;
! 516: double d;
! 517: char *str;
! 518:
! 519: if (!args)
! 520: return NULL;
! 521:
! 522: vars = ait_allocVars(0);
! 523: if (!vars)
! 524: return NULL;
! 525:
! 526: for (i = 0; *args; i++, args++) {
! 527: val = ait_getVars(&vars, i);
! 528: if (!val) {
! 529: ait_freeVars(&vars);
! 530: return NULL;
! 531: }
! 532:
! 533: if (dn) {
! 534: n = strtol(*args, &str, 0);
! 535: if (!str) {
! 536: AIT_SET_I64(val, (int64_t) n);
! 537: continue;
! 538: }
! 539: f = strtof(*args, &str);
! 540: if (!str) {
! 541: AIT_SET_F32(val, f);
! 542: continue;
! 543: }
! 544: d = strtod(*args, &str);
! 545: if (!str) {
! 546: AIT_SET_F64(val, d);
! 547: continue;
! 548: }
! 549: AIT_SET_STR(val, *args);
! 550: } else
! 551: AIT_SET_STR(val, *args);
! 552: }
! 553:
! 554: return vars;
! 555: }
1.1 misho 556:
557: /* variables array */
558:
559: /*
560: * ait_allocVars() - Allocate ait_val_t array
561: *
562: * @varnum = Number of variables
563: * return: =NULL error or !=NULL allocated array
564: */
1.4 misho 565: array_t *
1.1 misho 566: ait_allocVars(int varnum)
567: {
568: array_t *arr;
569: register int i;
570: ait_val_t *v;
571:
572: if (!(arr = array_Init(varnum)))
573: return NULL;
574:
575: for (i = 0; i < array_Size(arr); i++) {
576: if (!(v = ait_allocVar())) {
577: ait_freeVars(&arr);
578: return NULL;
579: } else
580: array_Set(arr, i, v);
581: }
582:
583: return arr;
584: }
585:
586: /*
587: * ait_getVars() - Get ait_val_t element from array and if not exists allocate it
588: *
589: * @vars = Variable array
590: * @n = index of variable into array
591: * return: NULL error or !=NULL ait_val_t element
592: */
1.4 misho 593: ait_val_t *
1.1 misho 594: ait_getVars(array_t ** __restrict vars, int n)
595: {
596: register int i;
597: ait_val_t *v;
598:
599: if (!vars)
600: return NULL;
601:
602: if (!*vars) {
603: if (!(*vars = ait_allocVars(n + 1)))
604: return NULL;
605: } else if (n >= (i = array_Size(*vars))) {
606: if (array_Grow(*vars, n + 1, 0))
607: return NULL;
608: for (; i < array_Size(*vars); i++)
609: if (!array_Get(*vars, i)) {
610: if (!(v = ait_allocVar()))
611: return NULL;
612: else
613: array_Set(*vars, i, v);
614: }
615: }
616:
617: return array(*vars, n, ait_val_t*);
618: }
619:
620: /*
621: * ait_clrVars() - Clear ait_val_t elements from array
622: *
623: * @vars = Variable array
624: * return: -1 error or size of array
625: */
1.4 misho 626: int
1.1 misho 627: ait_clrVars(array_t * __restrict vars)
628: {
629: register int i;
630: ait_val_t *v;
631:
632: if (!vars)
633: return -1;
634:
635: for (i = 0; i < array_Size(vars); i++)
636: if ((v = array(vars, i, ait_val_t*)))
637: AIT_FREE_VAL(v);
638:
639: return array_Size(vars);
640: }
641:
642: /*
643: * ait_freeVars() - Free ait_val_t array
644: *
645: * @vars = Variable array
646: * return: none
647: */
1.4 misho 648: void
1.1 misho 649: ait_freeVars(array_t ** __restrict vars)
650: {
1.6 misho 651: register int i;
652: ait_val_t *v;
653:
1.1 misho 654: if (!vars || !*vars)
655: return;
656:
1.6 misho 657: for (i = 0; i < array_Size(*vars); i++)
658: if ((v = array(*vars, i, ait_val_t*))) {
659: /* free memory if isn't zero copy */
660: if (!AIT_IN(v)) {
661: AIT_FREE_VAL(v);
662: if ((*vars)->arr_data[i])
663: e_free((*vars)->arr_data[i]);
664: } else
665: AIT_FREE_VAL(v);
666: (*vars)->arr_data[i] = NULL;
667: }
668: (*vars)->arr_last = -1;
669:
1.1 misho 670: array_Destroy(vars);
671: }
672:
1.5 misho 673: /*
674: * ait_resideVars() - Calculate footprint of resided variables into array
675: *
676: * @vars = Variable array
677: * return: bytes for whole array
678: */
679: size_t
680: ait_resideVars(array_t * __restrict vars)
681: {
682: size_t ret = 0;
683: register int i;
684:
685: if (vars) {
686: ret = array_Size(vars) * sizeof(ait_val_t);
687: for (i = 0; i < array_Size(vars); i++)
688: switch (AIT_TYPE(array(vars, i, ait_val_t*))) {
689: case buffer:
690: case string:
691: case data:
692: case ptr:
693: ret += AIT_LEN(array(vars, i, ait_val_t*));
694: break;
695: default:
696: break;
697: }
698: }
699:
700: return ret;
701: }
702:
1.1 misho 703:
704: /*
705: * ait_allocVar() - Allocate memory for variable
706: *
707: * return: NULL error or new variable, after use free variable with ait_freeVar()
708: */
1.4 misho 709: ait_val_t *
1.1 misho 710: ait_allocVar(void)
711: {
712: ait_val_t *v = NULL;
713:
714: v = e_malloc(sizeof(ait_val_t));
715: if (!v)
716: return NULL;
717: else
718: memset(v, 0, sizeof(ait_val_t));
719: v->val_type = empty;
720:
721: return v;
722: }
723:
724: /*
725: * ait_freeVar() - Free allocated memory for variable
726: *
727: * @val = Variable
728: * return: none
729: */
1.4 misho 730: void
1.1 misho 731: ait_freeVar(ait_val_t ** __restrict val)
732: {
733: if (val && *val) {
734: AIT_FREE_VAL(*val);
735: e_free(*val);
736: *val = NULL;
737: }
738: }
739:
740: /*
741: * ait_makeVar() - Allocate memory and fill variable
742: *
743: * @type = type of variable
744: * @... = arg1 is value of variable
745: * @... = arg2 is length of variabla. Not required for numbers and strings!
746: * return: NULL error or new variable, after use free variable with io_freeVar()
747: */
748: ait_val_t *
749: ait_makeVar(ait_type_t type, ...)
750: {
751: ait_val_t *v = NULL;
752: va_list lst;
753: void *p = NULL;
754: uint32_t len = 0;
755: uint64_t n = 0LL;
756:
757: v = ait_allocVar();
758: if (!v)
759: return NULL;
760:
761: va_start(lst, type);
762: switch (type) {
763: case empty:
764: v->val_type = (uint8_t) empty;
765: break;
766: case ptr:
767: p = va_arg(lst, void*);
768: len = va_arg(lst, uint32_t);
769: AIT_SET_PTR(v, p, len);
770: break;
771: case data:
772: p = va_arg(lst, void*);
773: len = va_arg(lst, uint32_t);
774: AIT_SET_DATA(v, p, len);
775: break;
776: case buffer:
777: p = va_arg(lst, void*);
778: len = va_arg(lst, uint32_t);
779: AIT_SET_BUF(v, p, len);
780: break;
781: case string:
782: p = va_arg(lst, char*);
783: AIT_SET_STR(v, (char*) p);
784: break;
785: case blob:
786: n = va_arg(lst, uint32_t);
787: len = va_arg(lst, uint32_t);
788: AIT_SET_BLOB(v, n, len);
789: break;
790: case f32:
791: AIT_SET_F32(v, (float) va_arg(lst, double));
792: break;
793: case f64:
794: AIT_SET_F64(v, va_arg(lst, double));
795: break;
796: case u8:
797: AIT_SET_U8(v, (uint8_t) va_arg(lst, int));
798: break;
799: case u16:
800: AIT_SET_U16(v, (uint16_t) va_arg(lst, int));
801: break;
802: case u32:
803: AIT_SET_U32(v, va_arg(lst, uint32_t));
804: break;
805: case u64:
806: AIT_SET_U64(v, va_arg(lst, uint64_t));
807: break;
808: case i8:
809: AIT_SET_I8(v, (int8_t) va_arg(lst, int));
810: break;
811: case i16:
812: AIT_SET_I16(v, (int16_t) va_arg(lst, int));
813: break;
814: case i32:
815: AIT_SET_I32(v, va_arg(lst, int32_t));
816: break;
817: case i64:
818: AIT_SET_I64(v, va_arg(lst, int64_t));
819: break;
820: }
821: va_end(lst);
822:
823: return v;
824: }
825:
826: static int
827: _cmp_arr_key_asc(const void *a, const void *b)
828: {
829: return AIT_KEY(*(ait_val_t**) a) - AIT_KEY(*(ait_val_t**) b);
830: }
831:
832: static int
833: _cmp_arr_key_desc(const void *a, const void *b)
834: {
835: return AIT_KEY(*(ait_val_t**) b) - AIT_KEY(*(ait_val_t**) a);
836: }
837:
838: static int
839: _cmp_arr_val_asc(const void *a, const void *b)
840: {
841: return AIT_RAW(*(ait_val_t**) a) - AIT_RAW(*(ait_val_t**) b);
842: }
843:
844: static int
845: _cmp_arr_val_desc(const void *a, const void *b)
846: {
847: return AIT_RAW(*(ait_val_t**) b) - AIT_RAW(*(ait_val_t**) a);
848: }
849:
850: /*
851: * ait_sortVarsByVal() - Sorting array with variables by value
852: *
853: * @vars = Variable array
854: * @order = Sort order. If =0 ascend or !=0 descend
855: * @cmp = Custom compare function for sorting. If =NULL compare by value
856: * return: none
857: */
1.4 misho 858: void
1.1 misho 859: ait_sortVarsByVal(array_t * __restrict vars, int order, int (*cmp)(const void*, const void*))
860: {
861: if (!vars)
862: return;
863:
864: if (cmp)
1.2 misho 865: qsort(vars->arr_data, vars->arr_num, sizeof(uintptr_t), cmp);
1.1 misho 866: else if (order)
1.2 misho 867: qsort(vars->arr_data, vars->arr_num, sizeof(uintptr_t), _cmp_arr_val_desc);
1.1 misho 868: else
1.2 misho 869: qsort(vars->arr_data, vars->arr_num, sizeof(uintptr_t), _cmp_arr_val_asc);
1.1 misho 870: }
871:
872: /*
873: * ait_sortVarsByKey() - Sorting array with variables by key
874: *
875: * @vars = Variable array
876: * @order = Sort order. If =0 ascend or !=0 descend
877: * return: none
878: */
1.4 misho 879: void
1.1 misho 880: ait_sortVarsByKey(array_t * __restrict vars, int order)
881: {
882: if (!vars)
883: return;
884:
885: if (order)
1.2 misho 886: qsort(vars->arr_data, vars->arr_num, sizeof(uintptr_t), _cmp_arr_key_desc);
1.1 misho 887: else
1.2 misho 888: qsort(vars->arr_data, vars->arr_num, sizeof(uintptr_t), _cmp_arr_key_asc);
1.1 misho 889: }
890:
891: /*
892: * ait_findKeyVars() - Find variable by key from array
893: *
894: * @vars = Variables
895: * @key = Search key
896: * return: NULL error or not found, !=NULL valid element
897: */
898: ait_val_t *
899: ait_findKeyVars(array_t * __restrict vars, u_short key)
900: {
901: array_t *tmp;
902: ait_val_t **vv, *v = NULL;
903: register int i;
904: const u_char *p;
905:
906: if (!vars)
907: return NULL;
908:
909: if (array_Copy(&tmp, vars) == -1)
910: return NULL;
911: else
1.2 misho 912: qsort(tmp->arr_data, tmp->arr_num, sizeof(uintptr_t), _cmp_arr_key_asc);
1.1 misho 913:
914: /* binary search */
915: for (p = (const u_char*) tmp->arr_data, i = array_Size(tmp); i; i >>= 1) {
1.2 misho 916: vv = (ait_val_t**) (p + (i >> 1) * sizeof(uintptr_t));
1.1 misho 917: if (!(key - AIT_KEY(*vv))) { /* found! */
918: v = *vv;
919: break;
920: }
921: if ((key - AIT_KEY(*vv)) > 0) { /* move right key > current */
1.2 misho 922: p = (const u_char*) vv + sizeof(uintptr_t);
1.1 misho 923: i--;
924: } /* else move left */
925: }
926:
927: array_Destroy(&tmp);
928: return v;
929: }
930:
931: /*
932: * ait_hashVar() - Generate hash key for variable from string or value
933: *
934: * @v = variable
935: * @key = key string for hash, if =NULL hash will built from variable
936: * return: hash key
937: */
938: u_short
939: ait_hashVar(ait_val_t * __restrict v, const char * __restrict key)
940: {
941: void *p;
942: u_short cksum;
943: int l;
944:
945: if (!v)
946: return 0;
947:
948: if (key) {
949: p = (void*) key;
950: l = (strlen(key) + 1) / 2;
951: } else {
952: switch (AIT_TYPE(v)) {
953: case empty:
954: AIT_KEY(v) = 0;
955: return 0;
956: case string:
957: case buffer:
958: p = AIT_ADDR(v);
959: l = AIT_LEN(v) / 2;
960: break;
961: case data:
962: p = v->val_data;
963: l = AIT_LEN(v) / 2;
964: break;
965: default:
966: p = &AIT_RAW(v);
967: l = sizeof AIT_RAW(v) / 2;
968: break;
969: }
970: }
971:
972: cksum = crcFletcher16((u_short*) p, l);
973:
974: if (AIT_BE(v))
975: AIT_KEY(v) = htobe16(cksum);
976: else if (AIT_LE(v))
977: AIT_KEY(v) = htole16(cksum);
978: else
979: AIT_KEY(v) = cksum;
980:
981: return AIT_KEY(v);
982: }
983:
984: /*
985: * ait_hashKeyVars() - Generate hash keys for variables
986: *
987: * @vars = Variables
988: * return -1 error or 0 ok
989: */
1.4 misho 990: int
1.1 misho 991: ait_hashKeyVars(array_t * __restrict vars)
992: {
993: register int i;
994:
995: if (!vars)
996: return -1;
997:
998: for (i = 0; i < array_Size(vars); i++)
999: ait_hashVar(array(vars, i, ait_val_t*), NULL);
1000:
1001: return 0;
1002: }
1003:
1004: /*
1005: * ait_findKeyHash() - Find variable by hash string from array
1006: *
1007: * @vars = Variables
1008: * @key = Search string
1009: * return: NULL error or not found, !=NULL valid element
1010: */
1.4 misho 1011: ait_val_t *
1.1 misho 1012: ait_findKeyHash(array_t * __restrict vars, const char * __restrict key)
1013: {
1014: u_short k = 0;
1015:
1016: if (!vars || !key)
1017: return NULL;
1018:
1019: k = crcFletcher16((u_short*) key, (strlen(key) + 1) / 2);
1020: return ait_findKeyVars(vars, k);
1021: }
1022:
1023: /*
1024: * ait_sprintfVar() - Builtin string variable from formatted input
1025: *
1026: * @v = variable
1027: * @fmt = format string
1028: * @... = argument(s)
1029: * return: -1 error or >0 copied bytes to variable
1030: */
1031: int
1.2 misho 1032: ait_sprintfVar(ait_val_t * __restrict v, const char *fmt, ...)
1.1 misho 1033: {
1034: int ret = 0;
1035: va_list lst;
1.9 misho 1036: char str[STRSIZ] = { [0 ... STRSIZ - 1] = 0 };
1.1 misho 1037:
1038: if (!v || !fmt)
1039: return -1;
1040:
1041: va_start(lst, fmt);
1.9 misho 1042: ret = vsnprintf(str, sizeof str - 1, fmt, lst);
1.1 misho 1043: va_end(lst);
1044:
1.9 misho 1045: if (ret > -1) {
1.1 misho 1046: AIT_FREE_VAL(v);
1047: AIT_SET_STR(v, str);
1048: } else
1049: LOGERR;
1050:
1051: return ret;
1052: }
1053:
1054: /*
1055: * ait_setlikeVar() - Set variable like ...
1056: *
1057: * @v = variable
1058: * @t = type of data
1059: * @l = length of data
1060: * @... = data
1061: * return: -1 error or 0 ok
1062: */
1.4 misho 1063: int
1.1 misho 1064: ait_setlikeVar(ait_val_t * __restrict v, ait_type_t t, u_int l, ...)
1065: {
1066: va_list lst;
1067:
1068: if (!v)
1069: return -1;
1070:
1071: AIT_FREE_VAL(v);
1072: AIT_INIT_VAL2(v, t);
1073: AIT_LEN(v) = l;
1074: AIT_IN(v) = 1;
1075:
1076: va_start(lst, l);
1077: switch (AIT_TYPE(v)) {
1078: case ptr:
1079: case buffer:
1080: case string:
1081: AIT_ADDR(v) = va_arg(lst, void*);
1082: break;
1083: default:
1084: AIT_RAW(v) = va_arg(lst, uint64_t);
1085: break;
1086: }
1087: va_end(lst);
1088:
1089: return 0;
1090: }
1091:
1092: /*
1093: * ait_getlikeVar() - Get variable like ...
1094: *
1095: * @v = variable
1096: * return: return raw data
1097: */
1.4 misho 1098: uint64_t
1.1 misho 1099: ait_getlikeVar(ait_val_t * __restrict v)
1100: {
1101: if (!v)
1102: return (uintptr_t) -1;
1103:
1104: return AIT_RAW(v);
1105: }
1106:
1107: /*
1108: * ait_cmpVar() - Compare two variables
1109: *
1110: * @a = 1st variable
1111: * @b = 2nd variable
1112: * return: 0 is equal or !=0 is different
1113: */
1.4 misho 1114: int
1.1 misho 1115: ait_cmpVar(ait_val_t * __restrict a, ait_val_t * __restrict b)
1116: {
1117: intptr_t ret;
1118:
1119: if (!(ret = (a - b)))
1120: return ret;
1121: if ((ret = AIT_TYPE(a) - AIT_TYPE(b)))
1122: return ret;
1123: if ((ret = AIT_LEN(a) - AIT_LEN(b)))
1124: return ret;
1125:
1126: switch (AIT_TYPE(a)) {
1127: case buffer:
1128: ret = memcmp(AIT_GET_BUF(a), AIT_GET_BUF(b), AIT_LEN(a));
1129: break;
1130: case string:
1131: ret = strncmp(AIT_GET_STR(a), AIT_GET_STR(b), AIT_LEN(a));
1132: break;
1133: case data:
1134: ret = memcmp(AIT_GET_DATA(a), AIT_GET_DATA(b), AIT_LEN(a));
1135: break;
1136: case ptr:
1137: ret = AIT_ADDR(a) - AIT_ADDR(b);
1138: break;
1139: default:
1140: ret = AIT_RAW(a) - AIT_RAW(b);
1141: break;
1142: }
1143:
1144: return (int) ret;
1145: }