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 1.14.2.1 2013/07/15 14:54:40 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, 2013
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: * return: -1 error, 0 already registered tag or 1 register ok
56: */
57: int
58: rpc_srv_registerCall(rpc_srv_t * __restrict srv, u_short tag, void *funcaddr)
59: {
60: rpc_func_t *func;
61:
62: if (!srv || !funcaddr) {
63: rpc_SetErr(EINVAL, "Invalid parameter can`t register function");
64: return -1;
65: }
66:
67: if (!(func = e_malloc(sizeof(rpc_func_t)))) {
68: LOGERR;
69: return -1;
70: } else {
71: memset(func, 0, sizeof(rpc_func_t));
72: AIT_KEY(&func->func_name) = tag;
73: }
74:
75: /* search for duplicate */
76: if (AVL_FIND(tagRPCFuncs, &srv->srv_funcs, func)) {
77: e_free(func);
78: return 0;
79: }
80:
81: func->func_parent = srv;
82: AIT_SET_PTR(&func->func_name, funcaddr, 0);
83:
84: /* add to list of functions */
85: RPC_FUNCS_LOCK(&srv->srv_funcs);
86: SLIST_INSERT_HEAD(&srv->srv_funcs, func, func_next);
87: AVL_INSERT(tagRPCFuncs, &srv->srv_funcs, func);
88: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
89: return 1;
90: }
91:
92: /*
93: * rpc_srv_unregisterCall() - Unregister call from RPC server
94: *
95: * @srv = RPC Server instance
96: * @tag = Function tag
97: * return: -1 error, 0 not found call, 1 unregister ok
98: */
99: int
100: rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, u_short tag)
101: {
102: rpc_func_t *f;
103:
104: if (!srv) {
105: rpc_SetErr(EINVAL, "Invalid parameter can`t unregister function");
106: return -1;
107: }
108:
109: f = rpc_srv_getCall(srv, tag);
110: if (!f) /* not found element for unregister */
111: return 0;
112:
113: RPC_FUNCS_LOCK(&srv->srv_funcs);
114: AVL_REMOVE(tagRPCFuncs, &srv->srv_funcs, f);
115: SLIST_REMOVE(&srv->srv_funcs, f, tagRPCFunc, func_next);
116: RPC_FUNCS_UNLOCK(&srv->srv_funcs);
117:
118: AIT_FREE_VAL(&f->func_name);
119: e_free(f);
120: return 1;
121: }
122:
123: /*
124: * rpc_srv_getCall() - Get registered call from RPC server
125: *
126: * @srv = RPC Server instance
127: * @tag = tag for function
128: * return: NULL not found call, !=NULL return call
129: */
130: rpc_func_t *
131: rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag)
132: {
133: rpc_func_t tmp;
134:
135: if (!srv) {
136: rpc_SetErr(EINVAL, "Invalid parameter can`t get function");
137: return NULL;
138: } else
139: memset(&tmp, 0, sizeof tmp);
140:
141: AIT_KEY(&tmp.func_name) = tag;
142: return AVL_FIND(tagRPCFuncs, &srv->srv_funcs, &tmp);
143: }
144:
145: /* --------------------------------------------------------- */
146:
147: /*
148: * rpc_srv_getBLOB() - Get registered BLOB
149: *
150: * @srv = RPC Server instance
151: * @var = hash for variable
152: * return: NULL not found, !=NULL return blob var
153: */
154: rpc_blob_t *
155: rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var)
156: {
157: rpc_blob_t *b, *tmp;
158:
159: if (!srv) {
160: rpc_SetErr(EINVAL, "Invalid parameter can`t get BLOB variable");
161: return NULL;
162: }
163:
164: TAILQ_FOREACH_SAFE(b, &srv->srv_blob.blobs, blob_node, tmp)
165: if (b->blob_var == var)
166: break;
167:
168: return b;
169: }
170:
171: static void *
172: toutBLOB(sched_task_t *task)
173: {
174: rpc_cli_t *c = TASK_ARG(task);
175:
176: rpc_srv_unregisterBLOB((rpc_srv_t*) c->cli_parent, (uint32_t) TASK_DATA(task));
177:
178: return NULL;
179: }
180:
181: /*
182: * rpc_srv_registerBLOB() - Register new BLOB to server
183: *
184: * @srv = RPC Server instance
185: * @len = BLOB length
186: * @tout = BLOB live timeout in seconds
187: * @task = task called this function
188: * return: NULL error or new registered BLOB
189: */
190: rpc_blob_t *
191: rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len, int tout,
192: sched_task_t * __restrict task)
193: {
194: rpc_blob_t *blob = NULL;
195: struct timespec ts = { tout ? tout : RPC_BLOB_TIMEOUT, 0 };
196:
197: if (!srv || !len) {
198: rpc_SetErr(EINVAL, "Invalid parameter can`t register BLOB variable");
199: return blob;
200: }
201:
202: blob = rpc_srv_blobCreate(srv, len);
203:
204: TAILQ_INSERT_TAIL(&srv->srv_blob.blobs, blob, blob_node);
205:
206: schedTimer(TASK_ROOT(task), toutBLOB, TASK_ARG(task), ts,
207: (void*) (intptr_t) blob->blob_var, blob->blob_len);
208: return blob;
209: }
210:
211: /*
212: * rpc_srv_unregisterBLOB() - Unregister BLOB from server
213: *
214: * @srv = RPC Server instance
215: * @var = BLOB Variable for unregister
216: * return: -1 error, 0 not found call, 1 unregister ok
217: */
218: int
219: rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var)
220: {
221: rpc_blob_t *b;
222:
223: if (!srv) {
224: rpc_SetErr(EINVAL, "Invalid parameter can`t unregister BLOB variable");
225: return -1;
226: }
227:
228: b = rpc_srv_getBLOB(srv, var);
229: if (!b) /* not found element for unregister */
230: return 0;
231:
232: TAILQ_REMOVE(&srv->srv_blob.blobs, b, blob_node);
233:
234: rpc_srv_blobFree(srv, b);
235: e_free(b);
236: return 1;
237: }
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