BadVPN – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 /**
2 * @file sleep.c
3 * @author Ambroz Bizjak <ambrop7@gmail.com>
4 *
5 * @section LICENSE
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * @section DESCRIPTION
30 *
31 * Synopsis:
32 * sleep(string ms_start [, string ms_stop])
33 *
34 * Description:
35 * On init, sleeps 'ms_start' milliseconds then goes up, or goes up immediately
36 * if 'ms_start' is an empty string.
37 * On deinit, sleeps 'ms_stop' milliseconds then dies, or dies immediately if
38 * 'ms_stop' is an empty string or is not provided. If a deinit is requested while
39 * the init sleep is still in progress, the init sleep is aborted and the deinit
40 * sleep is started immediately (if any).
41 */
42  
43 #include <stdlib.h>
44 #include <string.h>
45 #include <stdio.h>
46 #include <inttypes.h>
47 #include <limits.h>
48  
49 #include <ncd/module_common.h>
50  
51 #include <generated/blog_channel_ncd_sleep.h>
52  
53 struct instance {
54 NCDModuleInst *i;
55 btime_t ms_stop;
56 BTimer timer;
57 int dying;
58 };
59  
60 static void instance_free (struct instance *o);
61  
62 static void timer_handler (void *vo)
63 {
64 struct instance *o = vo;
65  
66 if (!o->dying) {
67 // signal up
68 NCDModuleInst_Backend_Up(o->i);
69 } else {
70 // die
71 instance_free(o);
72 }
73 }
74  
75 static void func_new (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
76 {
77 struct instance *o = vo;
78 o->i = i;
79  
80 // check arguments
81 NCDValRef ms_start_arg;
82 NCDValRef ms_stop_arg = NCDVal_NewInvalid();
83 if (!NCDVal_ListRead(params->args, 1, &ms_start_arg) &&
84 !NCDVal_ListRead(params->args, 2, &ms_start_arg, &ms_stop_arg)) {
85 ModuleLog(o->i, BLOG_ERROR, "wrong arity");
86 goto fail0;
87 }
88  
89 uintmax_t ms;
90 btime_t ms_start;
91  
92 if (NCDVal_IsString(ms_start_arg) && NCDVal_StringEqualsId(ms_start_arg, NCD_STRING_EMPTY)) {
93 ms_start = -1;
94 } else {
95 if (!ncd_read_uintmax(ms_start_arg, &ms) || ms > INT64_MAX) {
96 ModuleLog(o->i, BLOG_ERROR, "wrong start time");
97 goto fail0;
98 }
99 ms_start = ms;
100 }
101  
102 if (NCDVal_IsInvalid(ms_stop_arg) || (NCDVal_IsString(ms_stop_arg) && NCDVal_StringEqualsId(ms_stop_arg, NCD_STRING_EMPTY))) {
103 o->ms_stop = -1;
104 } else {
105 if (!ncd_read_uintmax(ms_stop_arg, &ms) || ms > INT64_MAX) {
106 ModuleLog(o->i, BLOG_ERROR, "wrong stop time");
107 goto fail0;
108 }
109 o->ms_stop = ms;
110 }
111  
112 // init timer
113 BTimer_Init(&o->timer, 0, timer_handler, o);
114  
115 // set not dying
116 o->dying = 0;
117  
118 if (ms_start < 0) {
119 // go up
120 NCDModuleInst_Backend_Up(i);
121 } else {
122 // set timer
123 BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, ms_start);
124 }
125  
126 return;
127  
128 fail0:
129 NCDModuleInst_Backend_DeadError(i);
130 }
131  
132 void instance_free (struct instance *o)
133 {
134 // free timer
135 BReactor_RemoveTimer(o->i->params->iparams->reactor, &o->timer);
136  
137 NCDModuleInst_Backend_Dead(o->i);
138 }
139  
140 static void func_die (void *vo)
141 {
142 struct instance *o = vo;
143  
144 if (o->ms_stop < 0) {
145 // die immediately
146 instance_free(o);
147 return;
148 }
149  
150 // set dying
151 o->dying = 1;
152  
153 // set timer
154 BReactor_SetTimerAfter(o->i->params->iparams->reactor, &o->timer, o->ms_stop);
155 }
156  
157 static struct NCDModule modules[] = {
158 {
159 .type = "sleep",
160 .func_new2 = func_new,
161 .func_die = func_die,
162 .alloc_size = sizeof(struct instance)
163 }, {
164 .type = NULL
165 }
166 };
167  
168 const struct NCDModuleGroup ncdmodule_sleep = {
169 .modules = modules
170 };