logd: only create pipe in stream mode
[project/ubox.git] / lsbloader.c
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; version 2 of the License
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
14 *
15 * Copyright (C) 2012 John Crispin <blogic@openwrt.org>
16 */
17
18 #include <stdio.h>
19 #include <stdlib.h>
20 #define __USE_GNU
21 #include <string.h>
22 #include <regex.h>
23 #include <glob.h>
24
25 #include <libubox/list.h>
26 #include <libubox/blobmsg_json.h>
27 #include "libubus.h"
28
29 struct initd {
30 struct list_head list;
31
32 char *name;
33 char *exec;
34 char *desc;
35 char *tpl;
36 char **deps;
37 int start;
38 int stop;
39 };
40
41 static LIST_HEAD(initds);
42 static regex_t pat_provides, pat_require, pat_start, pat_stop, pat_desc, pat_exec, pat_tpl;
43 static struct ubus_context *ctx;
44 static struct blob_buf b;
45 static uint32_t service;
46
47 static void initd_free(struct initd *i)
48 {
49 if (i->name)
50 free(i->name);
51 if (i->exec)
52 free(i->exec);
53 if (i->desc)
54 free(i->desc);
55 if (i->tpl)
56 free(i->tpl);
57 }
58
59 static int initd_parse(const char *file)
60 {
61 FILE *fp;
62 struct initd *i;
63 regmatch_t matches[2];
64 char buffer[1024];
65 ssize_t len;
66
67 fp = fopen(file, "r");
68 if (!fp) {
69 fprintf(stderr, "failed to open %s\n", file);
70 return -1;
71 }
72 len = fread(buffer, 1, sizeof(buffer) - 1, fp);
73 fclose(fp);
74
75 if (len < 1) {
76 fprintf(stderr, "failed to read from %s\n", file);
77 return -1;
78 }
79 buffer[len] = '\0';
80
81 i = malloc(sizeof(struct initd));
82 if (!i) {
83 fprintf(stderr, "failed to alloc initd struct\n");
84 return -1;
85 }
86 memset(i, 0, sizeof(*i));
87
88 if (!regexec(&pat_provides, buffer, 2, matches, 0))
89 i->name = strndup(buffer + matches[1].rm_so, (size_t)matches[1].rm_eo - matches[1].rm_so);
90 if (!regexec(&pat_exec, buffer, 2, matches, 0))
91 i->exec = strndup(buffer + matches[1].rm_so, matches[1].rm_eo - matches[1].rm_so);
92 if (!regexec(&pat_desc, buffer, 2, matches, 0))
93 i->desc = strndup(buffer + matches[1].rm_so, matches[1].rm_eo - matches[1].rm_so);
94 if (!regexec(&pat_tpl, buffer, 2, matches, 0))
95 i->tpl = strndup(buffer + matches[1].rm_so, matches[1].rm_eo - matches[1].rm_so);
96 if (!regexec(&pat_start, buffer, 2, matches, 0))
97 i->start += atoi(buffer + matches[1].rm_so);
98 if (!regexec(&pat_stop, buffer, 2, matches, 0))
99 i->stop += atoi(buffer + matches[1].rm_so);
100
101 if (i->name && i->exec)
102 list_add(&i->list, &initds);
103 else
104 initd_free(i);
105
106 return 0;
107 }
108
109 static void initd_init(void)
110 {
111 int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
112 glob_t gl;
113
114 regcomp(&pat_provides, "# Provides:[ \t]*([a-zA-Z0-9]+)", REG_EXTENDED);
115 regcomp(&pat_require, "# Required-Start:[ \t]*([a-zA-Z0-9 ]+)", REG_EXTENDED);
116 regcomp(&pat_start, "# Default-Start:[ \t]*([0-9])", REG_EXTENDED);
117 regcomp(&pat_stop, "# Default-Stop:[ \t]*([0-9])", REG_EXTENDED);
118 regcomp(&pat_desc, "# Description:[ \t]*([a-zA-Z0-9 ]+)", REG_EXTENDED);
119 regcomp(&pat_exec, "# X-Exec:[ \t]*([a-zA-Z0-9/ ]+)", REG_EXTENDED);
120 regcomp(&pat_tpl, "# X-Template:[ \t]*([a-zA-Z0-9/.]+)", REG_EXTENDED);
121
122 if (glob("/etc/rc.d/P*", gl_flags, NULL, &gl) >= 0) {
123 int j;
124 for (j = 0; j < gl.gl_pathc; j++)
125 initd_parse(gl.gl_pathv[j]);
126 }
127 globfree(&gl);
128
129 regfree(&pat_provides);
130 regfree(&pat_require);
131 regfree(&pat_start);
132 regfree(&pat_stop);
133 regfree(&pat_desc);
134 regfree(&pat_exec);
135 regfree(&pat_tpl);
136 }
137
138 static int init_services(void)
139 {
140 struct initd *i;
141 void *instances, *instance, *command;
142
143 list_for_each_entry(i, &initds, list) {
144 char *t;
145
146 blob_buf_init(&b, 0);
147 blobmsg_add_string(&b, "name", i->name);
148 instances = blobmsg_open_table(&b, "instances");
149 instance = blobmsg_open_table(&b, "instance");
150 command = blobmsg_open_array(&b, "command");
151 t = strtok(i->exec, " ");
152 while (t) {
153 blobmsg_add_string(&b, NULL, t);
154 t = strtok(NULL, " ");
155 }
156 blobmsg_close_array(&b, command);
157 blobmsg_close_table(&b, instance);
158 blobmsg_close_table(&b, instances);
159 ubus_invoke(ctx, service, "add", b.head, NULL, 0, 1000);
160 }
161
162 return 0;
163 }
164
165 int main(int argc, char **argv)
166 {
167 int ret;
168
169 initd_init();
170
171 if (list_empty(&initds))
172 return 0;
173
174 ctx = ubus_connect(NULL);
175 if (!ctx) {
176 fprintf(stderr, "Failed to connect to ubus\n");
177 return -1;
178 }
179
180 ret = ubus_lookup_id(ctx, "service", &service);
181 if (ret) {
182 fprintf(stderr, "Failed to find service object: %s\n", ubus_strerror(ret));
183 return -1;
184 }
185
186 return init_services();
187 }