1: /*************************************************************************
2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
6: * $Id: elwix.h,v 1.19 2021/03/21 01:32:04 misho Exp $
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:
15: Copyright 2004 - 2021
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: #ifndef __ELWIX_H
47: #define __ELWIX_H
48:
49:
50: #include <assert.h>
51: #include <syslog.h>
52: #include <stdarg.h>
53: #include <sys/types.h>
54: #include <sys/param.h>
55: #include <sys/socket.h>
56: #include <sys/un.h>
57: #ifndef __linux__
58: #include <sys/limits.h>
59: #include <sys/endian.h>
60: #include <net/if_dl.h>
61: #else
62: #include <linux/if_packet.h>
63: #endif
64: #include <netinet/in.h>
65: #include <arpa/inet.h>
66:
67: #include <elwix/aqueue.h>
68: #include <elwix/atree.h>
69: #include <elwix/ampool.h>
70: #include <elwix/acrc.h>
71: #include <elwix/aarray.h>
72: #include <elwix/asarr.h>
73: #include <elwix/avar.h>
74: #include <elwix/astr.h>
75: #include <elwix/aregex.h>
76: #include <elwix/aav.h>
77: #include <elwix/anet.h>
78: #include <elwix/atime.h>
79: #include <elwix/apack.h>
80: #include <elwix/apio.h>
81: #include <elwix/ajson.h>
82: #include <elwix/aiov.h>
83:
84:
85: #ifndef STRSIZ
86: #define STRSIZ 256
87: #endif
88:
89: #ifndef NBBY
90: #define NBBY 8 /* number of bits in a byte */
91: #endif
92:
93: #ifndef BYTE_ORDER
94: #ifndef LITTLE_ENDIAN
95: #define LITTLE_ENDIAN 1234
96: #endif /* LITTLE_ENDIAN */
97: #ifndef BIG_ENDIAN
98: #define BIG_ENDIAN 4321
99: #endif /* BIG_ENDIAN */
100: #ifdef WORDS_BIGENDIAN
101: #define BYTE_ORDER BIG_ENDIAN
102: #else /* WORDS_BIGENDIAN */
103: #define BYTE_ORDER LITTLE_ENDIAN
104: #endif /* WORDS_BIGENDIAN */
105: #endif /* BYTE_ORDER */
106:
107: #ifndef be16toh
108: #define be16toh betoh16
109: #endif
110: #ifndef be32toh
111: #define be32toh betoh32
112: #endif
113: #ifndef be64toh
114: #define be64toh betoh64
115: #endif
116: #ifndef le16toh
117: #define le16toh letoh16
118: #endif
119: #ifndef le32toh
120: #define le32toh letoh32
121: #endif
122: #ifndef le64toh
123: #define le64toh letoh64
124: #endif
125:
126: /* Bit map related macros. */
127: #ifndef setbit
128: #define setbit(a, i) (((unsigned char *)(a))[(i) / NBBY] |= 1 << ((i) % NBBY))
129: #endif
130: #ifndef clrbit
131: #define clrbit(a, i) (((unsigned char *)(a))[(i) / NBBY] &= ~(1 << ((i) % NBBY)))
132: #endif
133: #ifndef isset
134: #define isset(a, i) (((const unsigned char *)(a))[(i) / NBBY] & (1 << ((i) % NBBY)))
135: #endif
136: #ifndef isclr
137: #define isclr(a, i) ((((const unsigned char *)(a))[(i) / NBBY] & (1 << ((i) % NBBY))) == 0)
138: #endif
139:
140: /* Macros for counting and rounding. */
141: #ifndef howmany
142: #define howmany(x, y) (((x) + ((y) - 1)) / (y))
143: #endif
144: #ifndef nitems
145: #define nitems(x) (sizeof((x)) / sizeof((x)[0]))
146: #endif
147: #ifndef rounddown
148: #define rounddown(x, y) (((x) / (y)) * (y))
149: #endif
150: #ifndef rounddown2
151: #define rounddown2(x, y) ((x) & (~((y) - 1))) /* if y is power of two */
152: #endif
153: #ifndef roundup
154: #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) /* to any y */
155: #endif
156: #ifndef roundup2
157: #define roundup2(x, y) (((x) + ((y) - 1)) & (~((y) - 1))) /* if y is powers of two */
158: #endif
159: #ifndef powerof2
160: #define powerof2(x) ((((x) - 1) & (x)) == 0)
161: #endif
162:
163: /* Macros for min/max. */
164: #ifndef MIN
165: #define MIN(a, b) (((a) < (b)) ? (a) : (b))
166: #endif
167: #ifndef MAX
168: #define MAX(a, b) (((a) > (b)) ? (a) : (b))
169: #endif
170:
171: #define E_ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
172:
173:
174: #define ELWIX_SYSM 0
175: #define ELWIX_MPOOL 1
176:
177: #define VACUUM_LEFT 1
178: #define VACUUM_BETWEEN 2
179:
180:
181: extern int __isthreaded;
182:
183:
184: // elwix_SetProg() Set program memory pool name
185: void elwix_SetProg(const char *csProgName);
186: // elwix_GetProg() Get program memory pool name
187: const char *elwix_GetProg();
188:
189: // elwix_GetErrno() Get error code of last operation
190: int elwix_GetErrno();
191: // elwix_GetError() Get error text of last operation
192: const char *elwix_GetError();
193:
194:
195: // elwix_mm_inuse() Check for memory management model
196: int elwix_mm_inuse();
197:
198:
199: /*
200: * elwixInit() - Init libelwix library memory management
201: *
202: * @mm = memory management (IO_SYSM or IO_MPOOL)
203: * @maxmem = memory limit
204: * return: -1 error or !=-1 used memory management model
205: */
206: int elwixInit(int mm, unsigned long maxmem);
207: /*
208: * elwixFini() - Finish libelwix library memory management
209: *
210: * return: none
211: */
212: void elwixFini();
213:
214: /*
215: * elwix_byteOrder() - Detect platform byte order
216: *
217: * return: 1 = little endian or 0 big endian
218: */
219: int elwix_byteOrder();
220:
221: #ifndef strlcpy
222: /*
223: * Copy src to string dst of size siz. At most siz-1 characters
224: * will be copied. Always NUL terminates (unless siz == 0).
225: * Returns strlen(src); if retval >= siz, truncation occurred.
226: */
227: size_t strlcpy(char *dst, const char *src, size_t siz);
228: #endif
229: #ifndef strlcat
230: /*
231: * Appends src to string dst of size siz (unlike strncat, siz is the
232: * full size of dst, not space left). At most siz-1 characters
233: * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
234: * Returns strlen(src) + MIN(siz, strlen(initial dst)).
235: * If retval >= siz, truncation occurred.
236: */
237: size_t strlcat(char *dst, const char *src, size_t siz);
238: #endif
239:
240: /* memory management hooks */
241: extern void *(*e_malloc)(size_t);
242: extern void *(*e_calloc)(size_t, size_t);
243: extern void *(*e_realloc)(void*, size_t);
244: extern char *(*e_strdup)(const char*);
245: extern void (*e_free)(void*);
246:
247:
248: /* Debug helper macros */
249:
250: /* Verbose macros */
251: extern int elwix_Verbose;
252: #define e_initVerbose(x) (elwix_Verbose = (x))
253: #define e_incVerbose (elwix_Verbose++)
254: #define e_decVerbose (elwix_Verbose--)
255:
256: #define EVERBS(x) if ((x) <= elwix_Verbose)
257: #define EVERBOSE(x, fmt, ...) do { assert((fmt)); \
258: if ((x) <= elwix_Verbose) { \
259: char __str[BUFSIZ] = { [0 ... BUFSIZ - 1] = 0 }; \
260: snprintf(__str, sizeof __str, (fmt), ##__VA_ARGS__); \
261: syslog(LOG_INFO, "Verbose(%d):%s(%d): %s\n", \
262: (x), __func__, __LINE__, __str); \
263: } \
264: } while (0)
265: #define EVERBOSE2(x, fmt, ...) do { assert((fmt)); \
266: if ((x) <= elwix_Verbose) { \
267: char __str[0x10000] = { [0 ... 0xffff] = 0 }; \
268: snprintf(__str, sizeof __str, (fmt), ##__VA_ARGS__); \
269: syslog(LOG_INFO, "Verbose(%d):%s(%d): %s\n", \
270: (x), __func__, __LINE__, __str); \
271: } \
272: } while (0)
273:
274: /* Debug macros */
275: extern int elwix_Debug;
276: #define e_Debug elwix_Debug
277:
278: #define ELWIX_DEBUG_OFF 0x0
279: #define ELWIX_DEBUG_TRACE 0x1
280: #define ELWIX_DEBUG_LOG 0x2
281: #define ELWIX_DEBUG_ANY 0xFFFFFFFF
282:
283: #define ETRACE() if (elwix_Debug & ELWIX_DEBUG_TRACE) \
284: syslog(LOG_DEBUG, "I'm in %s(%d)\n", __func__, __LINE__)
285: #define EDEBUG(x, fmt, ...) do { assert((fmt)); \
286: if ((x) & elwix_Debug) { \
287: char __str[BUFSIZ] = { [0 ... BUFSIZ - 1] = 0 }; \
288: snprintf(__str, sizeof __str, (fmt), ##__VA_ARGS__); \
289: syslog(LOG_DEBUG, "Debug(%d):%s(%d): %s\n", \
290: (x), __func__, __LINE__, __str); \
291: } \
292: } while (0)
293:
294: /* Logger macro */
295: #define ELOGGER(x, fmt, ...) do { assert((fmt)); \
296: char __str[BUFSIZ] = { [0 ... BUFSIZ - 1] = 0 }; \
297: snprintf(__str, sizeof __str, (fmt), ##__VA_ARGS__); \
298: syslog((x), "Logger:%s(%d): %s\n", \
299: __func__, __LINE__, __str); \
300: } while (0)
301:
302: #define EWARNING(x, fmt, ...) do { assert((fmt)); \
303: char __str[BUFSIZ] = { [0 ... BUFSIZ - 1] = 0 }; \
304: snprintf(__str, sizeof __str, (fmt), ##__VA_ARGS__); \
305: syslog(LOG_WARNING, "Warning:%s(%d): #%d - %s\n", \
306: __func__, __LINE__, (x), __str); \
307: } while (0)
308: /* Error state macros */
309: #define EERROR(x, fmt, ...) do { assert((fmt)); \
310: char __str[BUFSIZ] = { [0 ... BUFSIZ - 1] = 0 }; \
311: snprintf(__str, sizeof __str, (fmt), ##__VA_ARGS__); \
312: syslog(LOG_ERR, "Error:%s(%d): #%d - %s\n", \
313: __func__, __LINE__, (x), __str); \
314: } while (0)
315: #define ESYSERR(x) do { \
316: if (x > 0 || errno) { \
317: int _ern = errno; \
318: syslog(LOG_ERR, "Error(sys):%s(%d): #%d - %s\n", \
319: __func__, __LINE__, x > 0 ? x : errno, \
320: strerror(x > 0 ? x : errno)); \
321: errno = _ern; \
322: } \
323: } while (0)
324: #define ELIBERR(ait) do { \
325: if (ait##_GetErrno()) \
326: syslog(LOG_ERR, "Error(lib):%s(%d): #%d - %s\n", \
327: __func__, __LINE__, ait##_GetErrno(), \
328: ait##_GetError()); \
329: } while (0)
330:
331:
332: #endif
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