1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: lists.c,v 1.9.2.3 2012/05/16 08:10:39 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, 2012
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: * rpc_srv_registerCall() - Register call to RPC server
51: *
52: * @srv = RPC Server instance
53: * @tag = Function tag
54: * @funcaddr = Function address
55: * @args = Number of return function arguments
56: * return: -1 error, 0 already registered tag or 1 register ok
57: */
58: int
59: rpc_srv_registerCall(rpc_srv_t * __restrict srv, u_short tag, void *funcaddr, u_short args)
60: {
61: rpc_func_t *func;
62:
63: if (!srv || !funcaddr) {
64: rpc_SetErr(EINVAL, "Invalid parameter can`t register function");
65: return -1;
66: } else {
67: /* search for duplicate */
68: TAILQ_FOREACH(func, &srv->srv_funcs, func_node)
69: if (AIT_KEY(&func->func_name) == tag)
70: return 0;
71: }
72:
73: if (!(func = malloc(sizeof(rpc_func_t)))) {
74: LOGERR;
75: return -1;
76: } else {
77: memset(func, 0, sizeof(rpc_func_t));
78: func->func_parent = srv;
79: }
80:
81: AIT_KEY(&func->func_name) = tag;
82: AIT_SET_PTR(&func->func_name, funcaddr, 0);
83:
84: /* allocate return variables */
85: if (args > 0 && !(func->func_vars = io_allocVars(args))) {
86: AIT_FREE_VAL(&func->func_name);
87: free(func);
88: return -1;
89: }
90:
91: /* add to list of functions */
92: TAILQ_INSERT_TAIL(&srv->srv_funcs, func, func_node);
93: return 1;
94: }
95:
96: /*
97: * rpc_srv_unregisterCall() - Unregister call from RPC server
98: *
99: * @srv = RPC Server instance
100: * @tag = Function tag
101: * return: -1 error, 0 not found call, 1 unregister ok
102: */
103: int
104: rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, u_short tag)
105: {
106: rpc_func_t *f;
107:
108: if (!srv) {
109: rpc_SetErr(EINVAL, "Invalid parameter can`t unregister function");
110: return -1;
111: }
112:
113: f = rpc_srv_getCall(srv, tag);
114: if (!f) /* not found element for unregister */
115: return 0;
116:
117: TAILQ_REMOVE(&srv->srv_funcs, f, func_node);
118:
119: io_freeVars(&f->func_vars);
120: AIT_FREE_VAL(&f->func_name);
121: free(f);
122: return 1;
123: }
124:
125: /*
126: * rpc_srv_getCall() - Get registered call from RPC server
127: *
128: * @srv = RPC Server instance
129: * @tag = tag for function
130: * return: NULL not found call, !=NULL return call
131: */
132: inline rpc_func_t *
133: rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag)
134: {
135: rpc_func_t *f, *tmp;
136:
137: if (!srv) {
138: rpc_SetErr(EINVAL, "Invalid parameter can`t get function");
139: return NULL;
140: }
141:
142: TAILQ_FOREACH_SAFE(f, &srv->srv_funcs, func_node, tmp)
143: if (AIT_KEY(&f->func_name) == tag)
144: break;
145:
146: return f;
147: }
148:
149: /* --------------------------------------------------------- */
150:
151: /*
152: * rpc_srv_getBLOB() - Get registered BLOB
153: *
154: * @srv = RPC Server instance
155: * @var = hash for variable
156: * return: NULL not found, !=NULL return blob var
157: */
158: inline rpc_blob_t *
159: rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var)
160: {
161: rpc_blob_t *b, *tmp;
162:
163: if (!srv) {
164: rpc_SetErr(EINVAL, "Invalid parameter can`t get BLOB variable");
165: return NULL;
166: }
167:
168: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp)
169: if (b->blob_var == var)
170: break;
171:
172: return b;
173: }
174:
175: /*
176: * rpc_srv_registerBLOB() - Register new BLOB to server
177: *
178: * @srv = RPC Server instance
179: * @len = BLOB length
180: * return: NULL error or new registered BLOB
181: */
182: rpc_blob_t *
183: rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len)
184: {
185: rpc_blob_t *blob = NULL;
186:
187: if (!srv || !len) {
188: rpc_SetErr(EINVAL, "Invalid parameter can`t register BLOB variable");
189: return blob;
190: }
191:
192: blob = rpc_srv_blobCreate(srv, len);
193:
194: TAILQ_INSERT_TAIL(&srv->srv_blob.blobs, blob, blob_node);
195: return blob;
196: }
197:
198: /*
199: * rpc_srv_unregisterBLOB() - Unregister BLOB from server
200: *
201: * @srv = RPC Server instance
202: * @var = BLOB Variable for unregister
203: * return: -1 error, 0 not found call, 1 unregister ok
204: */
205: int
206: rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var)
207: {
208: rpc_blob_t *b;
209:
210: if (!srv) {
211: rpc_SetErr(EINVAL, "Invalid parameter can`t unregister BLOB variable");
212: return -1;
213: }
214:
215: b = rpc_srv_getBLOB(srv, var);
216: if (!b) /* not found element for unregister */
217: return 0;
218:
219: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
220:
221: rpc_srv_blobFree(srv, b);
222: free(b);
223: return 1;
224: }
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