1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
6: * $Id: aitio.h,v 1.8 2011/04/20 22:56:32 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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 __AITIO_H
47: #define __AITIO_H
48:
49:
50: #include <assert.h>
51: #include <openssl/evp.h>
52:
53:
54: #define VACUUM_LEFT 1
55: #define VACUUM_BETWEEN 2
56:
57:
58: typedef struct _tagArray {
59: int arr_num;
60: void **arr_data;
61: } array_t;
62:
63: typedef struct _tagURLItem {
64: int vallen;
65: char *value;
66: } url_Item_t;
67:
68: struct tagIOURL {
69: unsigned char url_line[BUFSIZ];
70:
71: url_Item_t url_tech;
72: url_Item_t url_user;
73: url_Item_t url_pass;
74: url_Item_t url_host;
75: url_Item_t url_port;
76: url_Item_t url_path;
77: url_Item_t url_args;
78:
79: char *url_reserved;
80: };
81:
82: struct tagReqXML {
83: unsigned char xml_line[BUFSIZ];
84:
85: url_Item_t xml_namespace;
86: union {
87: url_Item_t container;
88: url_Item_t path;
89: } xml_node;
90: url_Item_t xml_data;
91: url_Item_t xml_attribute;
92: url_Item_t xml_value;
93: };
94:
95:
96: // io_GetErrno() Get error code of last operation
97: inline int io_GetErrno();
98: // io_GetError() Get error text of last operation
99: inline const char *io_GetError();
100:
101:
102: /*
103: * ioPromptRead() Read data from input h[0] with prompt to output h[1]
104: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
105: * @csPrompt = Prompt before input, may be NULL
106: * @psData = Readed data
107: * @dataLen = Length of data
108: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
109: */
110: int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen);
111: /*
112: * ioPromptPassword() Read password from input h[0] with prompt to output h[1]
113: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
114: * @csPrompt = Prompt before input, may be NULL
115: * @psPass = Readed password
116: * @passLen = Length of password
117: * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
118: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
119: */
120: int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm);
121:
122: /*
123: * ioRegexVerify() Function for verify data match in regex expression
124: * @csRegex = Regulare expression pattern
125: * @csData = Data for check and verify
126: * @startPos = Return start positions
127: * @endPos = Return end positions
128: * return: NULL not match or error; !=NULL begin of matched data
129: */
130: const char *ioRegexVerify(const char *csRegex, const char *csData, int *startPos, int *endPos);
131: /*
132: * ioRegexGet() Function for get data match in regex expression
133: * @csRegex = Regulare expression pattern
134: * @csData = Data from get
135: * @psString = Returned string if match
136: * @strLen = Length of string
137: * return: 0 not match; >0 count of returned chars
138: */
139: int ioRegexGet(const char *csRegex, const char *csData, char * __restrict psString, int strLen);
140: /*
141: * ioRegexReplace() Function for replace data match in regex expression with newdata
142: * @csRegex = Regulare expression pattern
143: * @csData = Source data
144: * @csNew = Data for replace
145: * return: NULL not match or error; !=NULL allocated new string, must be free after use!
146: */
147: char *ioRegexReplace(const char *csRegex, const char *csData, const char *csNew);
148:
149: /*
150: * ioVarAst() Function for evaluate string like asterisk variable "{text[:[-]#[:#]]}"
151: * @csString = Input string
152: * return: NULL error, !=NULL Allocated new string evaluated from input string, must be free()
153: */
154: char *ioVarAst(const char *csString);
155:
156: /*
157: * io_Path2File() Parse and make path/filename pair
158: * @csArgs = Input argument line
159: * @psPath = Output Path, if ==NULL path not returned
160: * @pathLen = Size of path array
161: * @psFile = Output File
162: * @fileLen = Size of file array
163: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
164: */
165: inline int io_Path2File(const char * __restrict csArgs, char * __restrict psPath, int pathLen,
166: char * __restrict psFile, int fileLen);
167:
168: /*
169: * io_UnquotStr() Remove quots from input text string
170: * @psLine = Text string
171: * return: 0 nothing to do; 1 successful unquoted string
172: */
173: inline int io_UnquotStr(unsigned char * __restrict psLine);
174: /*
175: * io_LTrimStr() Remove left whitespaces from text string
176: * @psLine = Text string
177: * return: 0 nothing to do; !=0 Removed bytes
178: */
179: inline int io_LTrimStr(unsigned char * __restrict psLine);
180: /*
181: * io_RTrimStr() Remove right whitespaces from text string
182: * @psLine = Text string
183: * return: 0 nothing to do; !=0 Removed bytes
184: */
185: inline int io_RTrimStr(unsigned char * __restrict psLine);
186: /*
187: * io_TrimStr() Remove left and right whitespaces from text string
188: * @psLine = Text string
189: * return: 0 nothing to do; !=0 Removed bytes
190: */
191: inline int io_TrimStr(unsigned char * __restrict psLine);
192: /*
193: * io_Ch2Hex() Convert from Char string to Hex string
194: * @psLine = Text string
195: * @lineLen = Length of Text string
196: * return: NULL nothing to do or error; !=0 Allocated new converted data without term\0 (must be free)
197: */
198: inline unsigned char *io_Ch2Hex(unsigned char *psLine, int lineLen);
199: /*
200: * io_Hex2Ch() Convert from Hex string to Char string
201: * @psLine = Text string
202: * @lineLen = Length of Text string
203: * return: NULL nothing to do or error; !=0 Allocated new converted string(must be free)
204: */
205: inline char *io_Hex2Ch(unsigned char *psLine, int lineLen);
206:
207: /*
208: * io_arrayInit() - Create and initialize dynamic array
209: * @numItems = Number of Items
210: * return: NULL error, != NULL allocated memory for array
211: */
212: inline array_t *io_arrayInit(int numItems);
213: /*
214: * io_arrayDestroy() - Free all data in dynamic array and Destroy dynamic array
215: * @parr = Array
216: * return: none
217: */
218: inline void io_arrayDestroy(array_t ** __restrict parr);
219: /*
220: * io_arrayFree() - Free all data in dynamic array
221: * (WARNING! If assign static array dont use this!!!)
222: * @arr = Array
223: * return: none
224: */
225: inline void io_arrayFree(array_t * __restrict arr);
226: /*
227: * io_arrayLen() - Get last used element in dynamic array (array Length)
228: * @arr = Array
229: * return: -1 error, 0 empty or >0 position of last used element
230: */
231: inline int io_arrayLen(array_t * __restrict arr);
232: /*
233: * io_arrayGrow() - Grow/Shrink dynamic array, Use with care when it shrink!!!
234: * @arr = Array
235: * @newNumItems = Number of Items
236: * return: -1 error, 0 ok
237: */
238: int io_arrayGrow(array_t * __restrict arr, int newNumItems);
239: /*
240: * io_arrayVacuum() - Vacuum dynamic array, empty elements will be deleted
241: * @arr = Array
242: * @fromWhere = 1 begin, 2 ALL empty elements
243: * return: -1 error, 0 ok
244: */
245: int io_arrayVacuum(array_t * __restrict arr, int fromWhere);
246:
247: #define io_arraySize(_arr) ((assert(_arr)), _arr->arr_num)
248:
249: #define io_arrayGet(_arr, _d, _type) ((assert(_arr && _arr->arr_num > _d)), \
250: ((_type) *(_arr->arr_data + _d)))
251: #define io_arraySet(_arr, _d, _ptr) do { \
252: assert(_arr && _arr->arr_num > _d); \
253: *(_arr->arr_data + _d) = (void*) _ptr; \
254: } while (0)
255:
256: /*
257: * io_arrayPush() - Push element into dynamic array like stack manner, place at first empty position
258: * @arr = Array
259: * @data = Element, if set NULL return only first empty position
260: * return: -1 not found empty position, array is full!, >-1 return position of stored element into array
261: */
262: inline int io_arrayPush(array_t * __restrict arr, void **data);
263: /*
264: * io_arrayPop() - Pop element from dynamic array like stack manner, last used position
265: * @arr = Array
266: * @data = Element, if set NULL return only first empty position
267: * @delAfter = Delete after Pop element, !=0 delete element from array after return data
268: * return: -1 not found used position, array is empty!, >-1 return element position
269: */
270: inline int io_arrayPop(array_t * __restrict arr, void ** __restrict data, int delAfter);
271:
272: /*
273: * io_argsNum() Parse and calculate number of arguments
274: * @csArgs = Input arguments line
275: * @csDelim = Delimiter(s) for separate
276: * return: 0 error format; -1 error:: can`t read; >0 ok, number of items
277: */
278: inline int io_argsNum(const char *csArgs, const char *csDelim);
279:
280: /*
281: * io_arrayMake() Parse and make array from arguments ... (input string will be modified!!!
282: * and output array must be free with io_arrayDestroy() after use!)
283: * @psArgs = Input arguments line, after execute string is modified!!!
284: * @nargs = Maximum requested count of arguments from input string psArgs, if 0 all psArgs
285: * @csDelim = Delimiter(s) for separate
286: * @parr = Output array of arguments ... (must be free with io_arrayDestroy() after use!)
287: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
288: */
289: int io_arrayMake(char * __restrict psArgs, int nargs, const char *csDelim,
290: array_t ** __restrict parr);
291:
292: /*
293: * io_MakeAV() Parse and make attribute/value pair
294: * @csArgs = Input argument line
295: * @csDelim = Delimiter for separate
296: * @psAttr = Output Attribute
297: * @attrLen = Size of attribute array
298: * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
299: * @valLen = Size of value array
300: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
301: */
302: int io_MakeAV(const char * __restrict csArgs, const char *csDelim,
303: char * __restrict psAttr, int attrLen, char * __restrict psValue, int valLen);
304:
305:
306: /*
307: * ioURLGet() Parse and get data from input URL
308: * @csURL = Input URL line
309: * @url = Output parsed URL
310: * return: 0 error format not find tech:// and return URL like path;
311: -1 error:: can`t read; >0 ok, up bits for known elements
312: */
313: int ioURLGet(const char *csURL, struct tagIOURL *url);
314: /*
315: * ioURLGetValue() Get value from parsed URL
316: * @url = Input parsed URL
317: * @csAttr = Attribute for search
318: * @psValue = Return value of attribute, if ==NULL only check for existence of attribute
319: * @valLen = Size of psValue array
320: * return: 0 error attribute not find; -1 error:: can`t read; >0 ok, find at position
321: */
322: int ioURLGetValue(struct tagIOURL *url, const char *csAttr, char * __restrict psValue, int valLen);
323: /*
324: * ioURLGetFile() Get file from parsed URL
325: * @url = Input parsed URL
326: * @psValue = Return filename, if not specified file in url path, replace with /
327: * @valLen = Size of psValue array
328: * return: -1 error:: can`t read; 0 ok
329: */
330: int ioURLGetFile(struct tagIOURL *url, char * __restrict psValue, int valLen);
331:
332:
333: /*
334: * ioXMLGet() Parse and get data from input XML request string [ns:]container[|attribute[=value]][?data]
335: * @csXML = Input XML request line
336: * @xml = Output parsed XML request
337: * return: 0 error format incorrect, -1 error:: can`t read; >0 ok readed elements bits
338: */
339: int ioXMLGet(const char *csXML, struct tagReqXML *xml);
340:
341:
342: /*
343: * ioMkDir() Function for racursive directory creation and validation
344: * @csDir = Full directory path
345: * @mode = Mode for directory creation if missing dir
346: * return: -1 error, 0 directory path exist, >0 created missing dirs
347: */
348: int ioMkDir(const char *csDir, int mode);
349:
350: /*
351: * ioWatchDirLoop() Function for watching changes in directory and fire callback
352: * @csDir = Full directory path
353: * @callback = Callback if raise event! nOp -1 delete, 0 change/move, 1 create
354: * return: -1 error, !=-1 ok, number of total signaled events
355: */
356: int ioWatchDirLoop(const char *csDir, int (*callback)(const char *csName, int nOp));
357:
358:
359: /*
360: * io_rread() Raw VFS read function
361: * @fd = File handle
362: * @buf = Read buffer
363: * @nbytes = Read buffer size
364: * @offset = Read from position, if -1 read nbytes from current position
365: * @update = Update file handle position !0
366: * return: -1 error or !=-1 readed bytes
367: */
368: inline int io_rread(int fd, void * __restrict buf, size_t nbytes, off_t offset, int update);
369: /*
370: * io_rwrite() Raw VFS write function
371: * @fd = File handle
372: * @buf = Write buffer
373: * @nbytes = Write bytes from buffer
374: * @offset = Write at position, if -1 write nbytes from current position
375: * @update = Update file handle position !0
376: * return: -1 error or !=-1 writed bytes
377: */
378: inline int io_rwrite(int fd, void * __restrict buf, size_t nbytes, off_t offset, int update);
379:
380: /* Disk I/O helper macros */
381: #define io_read(f, b, n) io_rread(f, b, n, -1, 1)
382: #define io_write(f, b, n) io_rwrite(f, b, n, -1, 1)
383:
384:
385: /* Debug helper macros */
386: extern int io_Debug;
387:
388: #define io_initDebug(x) io_Debug = (x);
389: #define io_addDebug io_Debug++
390: #define ioDEBUG(x, fmt, ...) do { \
391: assert((fmt)); \
392: char str[STRSIZ] = { 0 }; \
393: snprintf(str, STRSIZ, (fmt), ##__VA_ARGS__); \
394: if ((x) <= io_Debug) \
395: syslog(LOG_DEBUG, "ioDebug(%d):%s(%d): %s\n", \
396: (x), __func__, __LINE__, str); \
397: } while (0)
398:
399: #define ioERROR(x, fmt, ...) do { \
400: assert((fmt)); \
401: char str[STRSIZ] = { 0 }; \
402: snprintf(str, STRSIZ, (fmt), ##__VA_ARGS__); \
403: syslog(LOG_ERR, "ioError():%s(%d): #%d - %s\n", \
404: __func__, __LINE__, (x), str); \
405: } while (0)
406: #define io_sysERROR(x) do { \
407: if (x > 0 || errno) \
408: syslog(LOG_ERR, "ioError(sys):%s(%d): #%d - %s\n", \
409: __func__, __LINE__, x > 0 ? x : errno, \
410: strerror(x > 0 ? x : errno)); \
411: } while (0)
412: #define io_aitERROR(ait) do { \
413: if (ait##_GetErrno()) \
414: syslog(LOG_ERR, "ioError(ait):%s(%d): #%d - %s\n", \
415: __func__, __LINE__, ait##_GetErrno(), \
416: ait##_GetError()); \
417: } while (0)
418:
419:
420: /* Crypto framework */
421:
422: /*
423: * ioCipher() Cipher wrapper for all supported crypto algorythms
424: * @pInput = input buffer
425: * @inLen = input buffer len
426: * @ppOutput = output allocated buffe, must be free after use
427: * @Cipher = cipher engine, like EVP_bf_cbc() or etc...
428: * @pKey = key
429: * @pIV = IV, salt (8 bytes)
430: * @nMode = Mode 0 - decrypting or 1 - encrypting
431: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
432: */
433: int ioCipher(unsigned char *pInput, int inLen, unsigned char **ppOutput, const EVP_CIPHER *Cipher,
434: unsigned char *pKey, unsigned char *pIV, int nMode);
435:
436: /*
437: * io_Blowfish() Blowfish cipher algorythm, work with ASCII hex strings
438: * @pInput = input buffer
439: * @inLen = input buffer len
440: * @ppOutput = output allocated buffe, must be free after use
441: * @pKey = key
442: * @pIV = IV, salt (8 bytes)
443: * @nMode = Mode 0 - decrypting or 1 - encrypting
444: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
445: */
446: int io_Blowfish(unsigned char *pInput, int inLen, unsigned char **ppOutput,
447: unsigned char *pKey, unsigned char *pIV, int nMode);
448:
449:
450: #endif
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