Annotation of libelwix/src/av.c, revision 1.3
1.1 misho 1: /*************************************************************************
2: * (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
1.3 ! misho 6: * $Id: av.c,v 1.2.20.1 2015/06/25 00:36:48 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:
1.3 ! misho 15: Copyright 2004 - 2015
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:
49: /*
50: * av_Make() Parse and make attribute/value pair
51: *
52: * @csArgs = Input argument line
53: * @csDelim = Delimiter for separate
54: * @psAttr = Output Attribute
55: * @attrLen = Size of attribute array
56: * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
57: * @valLen = Size of value array
58: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
59: */
60: int
61: av_Make(const char * __restrict csArgs, const char *csDelim,
62: char * __restrict psAttr, int attrLen, char * __restrict psValue, int valLen)
63: {
64: register int ret = 0;
65: char *pos, *psBuf;
66:
67: if (!csArgs || !csDelim || !psAttr || !attrLen)
68: return -1;
69: if (psValue && !valLen)
70: return -1;
71: else
72: memset(psValue, 0, valLen);
73: psBuf = e_strdup(csArgs);
74: if (!psBuf)
75: return -1;
76:
77: pos = strpbrk(psBuf, csDelim);
78: if (pos)
79: *pos++ = 0;
80: ret++;
81: strlcpy(psAttr, psBuf, attrLen);
82:
83: if (pos && *pos) {
84: ret++;
85: if (psValue)
86: strlcpy(psValue, pos, valLen);
87: }
88:
89: e_free(psBuf);
90: return ret;
91: }
92:
93: /*
94: * av_MakeExt() Parse and make attribute/value pair over input string
95: *
96: * @csArgs = Input argument line, will be modified!
97: * @csDelim = Delimiter for separate
98: * @psAttr = Output Attribute
99: * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
100: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
101: */
102: int
103: av_MakeExt(char * __restrict psArgs, const char *csDelim,
104: char ** __restrict psAttr, char ** __restrict psValue)
105: {
106: register int ret = 0;
107: char *pos;
108:
109: if (!psArgs || !csDelim)
110: return -1;
111:
112: pos = strpbrk(psArgs, csDelim);
113: if (pos) {
114: *pos++ = 0;
115: ret++;
116: if (psAttr)
117: *psAttr = psArgs;
118: } else
119: return 0;
120:
121: if (psValue) {
122: if (pos && *pos) {
123: ret++;
124: *psValue = pos;
125: } else
126: *psValue = NULL;
127: }
128:
129: return ret;
130: }
131:
132: /*
133: * av_Path2File() - Parse and make path/filename pair
134: *
135: * @csArgs = Input argument line
136: * @psPath = Output Path, if ==NULL path not returned
137: * @pathLen = Size of path array
138: * @psFile = Output File
139: * @fileLen = Size of file array
140: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
141: */
142: int
143: av_Path2File(const char * __restrict csArgs, char * __restrict psPath,
144: int pathLen, char * __restrict psFile, int fileLen)
145: {
146: char *pos, *psBuf;
147:
148: if (!csArgs || !psFile || !fileLen)
149: return -1;
150: if (psPath && !pathLen)
151: return -1;
152:
153: psBuf = e_strdup(csArgs);
154: if (!psBuf)
155: return -1;
156:
157: pos = strrchr(psBuf, '/');
158: if (!pos) {
159: strlcpy(psFile, psBuf, fileLen);
160:
161: e_free(psBuf);
162: return 1;
163: } else
164: *pos++ = 0;
165:
166: strlcpy(psFile, pos, fileLen);
167: if (psPath)
168: strlcpy(psPath, psBuf, pathLen);
169:
170: e_free(psBuf);
171: return 2;
172: }
173:
174:
175: /*
176: * av_Save() - Attribute/Value pair store to file
177: *
178: * @csPath = Directory
179: * @csAttr = Attribute
180: * @csVal = Value
181: * @update = Update if a/v exists
182: * @perm = File permissions, if =0 set default perm=0600
183: * return: -1 error or >-1 written bytes
184: */
185: int
186: av_Save(const char *csPath, const char *csAttr, const char *csVal, int update, int perm)
187: {
188: int fd, wlen = 0;
189: char szFile[MAXPATHLEN];
190:
191: if (!csAttr)
192: return -1;
193: else
194: memset(szFile, 0, sizeof szFile);
195: snprintf(szFile, sizeof szFile, "%s/%s.av", csPath ? csPath : ".", csAttr);
196:
197: wlen = O_CREAT | O_WRONLY;
198: if (!update)
199: wlen |= O_EXCL;
200: fd = open(szFile, wlen, perm ? perm : 0600);
201: if (fd == -1) {
202: LOGERR;
203: return -1;
204: } else
205: wlen ^= wlen;
206:
207: if (csVal)
208: if ((wlen = write(fd, csVal, strlen(csVal))) == -1) {
209: LOGERR;
210: close(fd);
211: unlink(szFile);
212: return -1;
213: }
214:
215: close(fd);
216: return wlen;
217: }
218:
219: /*
220: * av_Load() - Get stored Attribute/Value
221: *
222: * @csPath = Directory
223: * @csAttr = Attribute
224: * @psVal = Value
225: * @valLen = Value length
226: * @del = Delete a/v pair after read
227: * return: -1 error or >-1 readed bytes
228: */
229: int
230: av_Load(const char *csPath, const char *csAttr, char *psVal, int valLen, int del)
231: {
232: int fd, rlen = 0;
233: char szFile[MAXPATHLEN];
234:
235: if (!csAttr)
236: return -1;
237: else
238: memset(szFile, 0, sizeof szFile);
239: snprintf(szFile, sizeof szFile, "%s/%s.av", csPath ? csPath : ".", csAttr);
240:
241: if (psVal && valLen) {
242: fd = open(szFile, O_RDONLY);
243: if (fd == -1) {
244: LOGERR;
245: return -1;
246: } else
247: rlen ^= rlen;
248:
249: memset(psVal, 0, valLen);
250: rlen = read(fd, psVal, valLen - 1);
251: if (rlen == -1) {
252: LOGERR;
253: close(fd);
254: return -1;
255: }
256:
257: close(fd);
258: }
259:
260: if (del)
261: unlink(szFile);
262: return rlen;
263: }
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