115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
|
/*
|
||
|
|
Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
|
||
|
|
All rights reserved.
|
||
|
|
|
||
|
|
Redistribution and use in source and binary forms, with or without
|
||
|
|
modification, are permitted provided that the following conditions are met:
|
||
|
|
|
||
|
|
1. Redistributions of source code must retain the above copyright notice,
|
||
|
|
this list of conditions and the following disclaimer.
|
||
|
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
||
|
|
this list of conditions and the following disclaimer in the documentation
|
||
|
|
and/or other materials provided with the distribution.
|
||
|
|
|
||
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||
|
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include "libgluonutil.h"
|
||
|
|
|
||
|
|
#include <json-c/json.h>
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
|
||
|
|
char * gluonutil_read_line(const char *filename) {
|
||
|
|
FILE *f = fopen(filename, "r");
|
||
|
|
if (!f)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
char *line = NULL;
|
||
|
|
size_t len = 0;
|
||
|
|
|
||
|
|
ssize_t r = getline(&line, &len, f);
|
||
|
|
|
||
|
|
fclose(f);
|
||
|
|
|
||
|
|
if (r >= 0) {
|
||
|
|
len = strlen(line);
|
||
|
|
|
||
|
|
if (len && line[len-1] == '\n')
|
||
|
|
line[len-1] = 0;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
free(line);
|
||
|
|
line = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return line;
|
||
|
|
}
|
||
|
|
|
||
|
|
char * gluonutil_get_sysconfig(const char *key) {
|
||
|
|
if (strchr(key, '/'))
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
const char prefix[] = "/lib/gluon/core/sysconfig/";
|
||
|
|
char path[strlen(prefix) + strlen(key) + 1];
|
||
|
|
snprintf(path, sizeof(path), "%s%s", prefix, key);
|
||
|
|
|
||
|
|
return gluonutil_read_line(path);
|
||
|
|
}
|
||
|
|
|
||
|
|
char * gluonutil_get_node_id(void) {
|
||
|
|
char *node_id = gluonutil_get_sysconfig("primary_mac");
|
||
|
|
if (!node_id)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
char *in = node_id, *out = node_id;
|
||
|
|
|
||
|
|
do {
|
||
|
|
if (*in != ':')
|
||
|
|
*out++ = *in;
|
||
|
|
} while (*in++);
|
||
|
|
|
||
|
|
return node_id;
|
||
|
|
}
|
||
|
|
|
||
|
|
char * gluonutil_get_interface_address(const char *ifname) {
|
||
|
|
const char *format = "/sys/class/net/%s/address";
|
||
|
|
char path[strlen(format) + strlen(ifname) - 1];
|
||
|
|
|
||
|
|
snprintf(path, sizeof(path), format, ifname);
|
||
|
|
|
||
|
|
return gluonutil_read_line(path);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
struct json_object * gluonutil_wrap_string(const char *str) {
|
||
|
|
if (!str)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
return json_object_new_string(str);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct json_object * gluonutil_wrap_and_free_string(char *str) {
|
||
|
|
struct json_object *ret = gluonutil_wrap_string(str);
|
||
|
|
free(str);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct json_object * gluonutil_load_site_config(void) {
|
||
|
|
return json_object_from_file("/lib/gluon/site.json");
|
||
|
|
}
|