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#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <net/if.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <netlink/route/link.h>
static int hex2num(char c)
{
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
return -1;
}
static int hex2byte(const char *hex)
{
int a, b;
if((a = hex2num(*hex++)) < 0)
return -1;
if((b = hex2num(*hex++)) < 0)
return -1;
return (a << 4) | b;
}
LIBEASY_API uint8_t *strtob(char *str, int len, uint8_t *bytes)
size_t slen;
int i;
if (!str || !bytes)
return NULL;
slen = strlen(str);
if (!slen || slen % 2 || str[slen] != '\0')
return NULL;
slen >>= 1;
if (len > slen)
len = slen;
for (i = 0; i < len; i++) {
int a;
if ((a = hex2byte(str)) < 0)
return NULL;
str += 2;
bytes[i] = a;
}
return bytes;
}
LIBEASY_API char *btostr(uint8_t *bytes, int len, char *str)
{
size_t i;
return NULL;
for (i = 0; i < len; i++)
sprintf(str + strlen(str), "%02x", bytes[i] & 0xff);
return str;
}
LIBEASY_API uint8_t *hwaddr_aton(const char *macstr, uint8_t *mac)
{
size_t i;
for (i = 0; i < 6; i++) {
int a;
if((a = hex2byte(macstr)) < 0)
return NULL;
macstr += 2;
mac[i] = a;
if (i < 6 - 1 && *macstr++ != ':')
return NULL;
}
return mac;
}
LIBEASY_API char *hwaddr_ntoa(const uint8_t *mac, char *macstr)
{
sprintf(macstr, "%02x:%02x:%02x:%02x:%02x:%02x",
mac[0]&0xff, mac[1]&0xff,
mac[2]&0xff, mac[3]&0xff,
mac[4]&0xff, mac[5]&0xff);
return macstr;
}
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int LIBEASY_API uuid_strtob(char *uuidstr, uint8_t *uuid)
{
uint8_t elen[] = {8, 4, 4, 4, 12};
char *ptr, *pos, *end;
uint8_t *ret;
int idx = 0;
int i = 0;
if (!uuidstr || !uuid)
return -1;
ptr = uuidstr;
end = uuidstr + strlen(uuidstr);
while (ptr < end) {
char tmp[32] = {0};
pos = ptr;
ptr = strchr(pos, '-');
if (!ptr) {
if (i == 4) {
ptr = end;
if (ptr - pos != elen[i])
return -1;
strncpy(tmp, pos, elen[i]);
ret = strtob(tmp, elen[i] / 2, &uuid[idx]);
return !ret ? -1 : 0;
}
return -1;
}
if (ptr - pos != elen[i])
return -1;
strncpy(tmp, pos, elen[i]);
ret = strtob(tmp, elen[i] / 2, &uuid[idx]);
if (!ret)
return -1;
ptr++;
idx += elen[i] / 2;
i++;
}
return 0;
}
int LIBEASY_API uuid_btostr(uint8_t *uuid, char *uuidstr)
{
if (!uuidstr || !uuid)
return -1;
sprintf(uuidstr,
"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15]);
return 0;
}
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int LIBEASY_API get_ifstatus(const char *ifname, ifstatus_t *f)
{
struct ifreq ifr;
int ret = 0;
int s;
s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0)
return -errno;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname, 16);
if (ioctl(s, SIOCGIFFLAGS, &ifr) != 0) {
ret = errno;
close(s);
return -ret;
}
*f = ifr.ifr_flags;
close(s);
return 0;
}
int LIBEASY_API get_ifoperstatus(const char *ifname, ifopstatus_t *opstatus)
{
struct rtnl_link *link;
struct nl_sock *sk;
int ret = 0;
sk = nl_socket_alloc();
if (sk == NULL) {
ret = -errno;
return ret;
}
nl_connect(sk, NETLINK_ROUTE);
link = rtnl_link_alloc();
if (link == NULL) {
ret = -errno;
nl_socket_free(sk);
return ret;
}
if (rtnl_link_get_kernel(sk, 0, ifname, &link) < 0) {
ret = -1;
goto out;
}
*opstatus = rtnl_link_get_operstate(link);
out:
rtnl_link_put(link);
nl_socket_free(sk);
return ret;
}
int LIBEASY_API set_sighandler(int sig, void (*handler)(int))
{
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sa.sa_handler = handler;
if (sigaction(sig, &sa, NULL) < 0) {
libeasy_err("Error sigaction %d\n", sig);
return -1;
}
return 0;
}
int LIBEASY_API unset_sighandler(int sig)
{
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sa.sa_handler = SIG_DFL;
return sigaction(sig, &sa, NULL);
}
#define QD_LINE_MAX 2048
{
int start = 0, end = 0;
if (!str)
return NULL;
if (strlen(str) == 0)
return str;
/* trim at the end */
end = strlen(str);
while (end > 0 && isspace(str[end - 1]))
end--;
str[end] = 0;
/* trim at the start */
start = 0;
while (start < end && isspace(str[start]))
start++;
memmove(str, str + start, end - start + 1);
return str;
}
void LIBEASY_API remove_newline(char *buf)
{
int len;
len = strlen(buf) - 1;
if (buf[len] == '\n')
buf[len] = 0;
}
int vsnsystemf(char *output, size_t output_size, const char *format, va_list ap)
{
size_t cmdline_size = 256;
char *cmdline = NULL, *new_cmdline;
cmdline = (char *)malloc(cmdline_size);
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if (!cmdline)
goto out;
while (1) {
memset(cmdline, 0, cmdline_size);
n = vsnprintf(cmdline, cmdline_size, format, ap);
if (n < 0)
goto out_cmdline;
if (n < cmdline_size)
break; /* good */
/* else try again with more space */
cmdline_size += 32;
new_cmdline = (char *) realloc(cmdline,
cmdline_size * sizeof(char));
if (!new_cmdline)
goto out_cmdline;
cmdline = new_cmdline;
}
FILE *stream;
char *line;
stream = popen(cmdline, "r");
if (!stream)
goto out_stream;
if (!output || !(output_size > 0))
goto out_no_output;
line = (char *) malloc(QD_LINE_MAX * sizeof(char));
if (!line)
goto out_line;
memset(output, 0, output_size);
while (fgets(line, QD_LINE_MAX, stream)) {
int remaining = output_size - strlen(output) - 1;
if (remaining <= 0)
break;
strncat(output, line, remaining);
}
output[output_size - 1] = 0;
out_line:
free(line);
out_no_output:
rv = pclose(stream);
/* Check pclose() status */
if (WIFEXITED(rv))
rv = WEXITSTATUS(rv);
else if (WIFSIGNALED(rv))
rv = WTERMSIG(rv);
else if (WIFSTOPPED(rv))
rv = WSTOPSIG(rv);
out_stream:
out_cmdline:
free(cmdline);
out:
return rv;
}
int vsystemf(const char *format, va_list ap)
{
int rv;
rv = vsnsystemf(NULL, 0, format, ap);
return rv;
}
/* runCmd is an alias for systemf, calls directly vsystemf */
void LIBEASY_API runCmd(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsystemf(format, ap);
va_end(ap);
}
/* chrCmd is an alias for snsystemf, calls directly vsnsystemf */
LIBEASY_API char *chrCmd(char *output, size_t output_size, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vsnsystemf(output, output_size, format, ap);
va_end(ap);
trim(output);
return output;
}
LIBEASY_API int Cmd(char *output, size_t output_size, const char *format, ...)
{
int rv;
va_list ap;
va_start(ap, format);
rv = vsnsystemf(output, output_size, format, ap);
va_end(ap);
trim(output);
return rv;
}