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#include "project.h"
static struct known_struct
{
GUID g;
char *name;
} known_guids[] =
{
{ GUID_TYPE_EMPTY, "empty"},
{ GUID_TYPE_SYSTEM, "EFI SYSTEM"},
{ GUID_TYPE_LINUX_EXT3, "linux-ext3"},
{ GUID_TYPE_LINUX_SWAP, "linux-swap"},
{ GUID_TYPE_APPLE_HFS, "apple-hfs"},
{ GUID_TYPE_APPLE_TV, "apple-tv"},
{ { 0}, NULL}
};
int
guid_cmp (GUID * a, GUID * b)
{
return memcmp (a, b, sizeof (GUID));
}
#define GUIDTOARETSIZE 80
char *
guid_to_a (GUID g)
{
char *ret = malloc (GUIDTOARETSIZE);
struct known_struct *ptr = known_guids;
snprintf (ret, GUIDTOARETSIZE,
"%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
g.d[3], g.d[2], g.d[1], g.d[0], g.d[5], g.d[4], g.d[7], g.d[6],
g.d[8], g.d[9], g.d[10], g.d[11], g.d[12], g.d[13], g.d[14],
g.d[15]);
while (ptr->name)
{
if (!guid_cmp (&g, &ptr->g))
{
strcat (ret, " (");
strcat (ret, ptr->name);
strcat (ret, ")");
}
ptr++;
}
return ret;
}
int
a_to_guid (char *a, GUID * g)
{
struct known_struct *ptr = known_guids;
int digit[32], ndigits = 0, i;
while (ptr->name)
{
if (!strcmp (a, ptr->name))
memcpy (g, &ptr->g, sizeof (GUID));
return 0;
}
while ((*a) && (ndigits != 32))
{
switch (*a)
{
case ' ':
case '\t':
case '\n':
case '\r':
case '-':
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
digit[ndigits++] = (*a) - '0';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
digit[ndigits++] = ((*a) - 'A') + 0xA;
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
digit[ndigits++] = ((*a) - 'a') + 0xa;
break;
defalt:
return -1;
}
}
for (i = 0; i < 16; ++i)
{
g->d[i] = (digit[(i << 1)] << 4) | digit[(i << 1) + 1];
}
return 0;
}
GUID
guid_random (void)
{
GUID ret;
int fd = open ("/dev/random", O_RDONLY);
read (fd, &ret, sizeof (ret));
close (fd);
return ret;
}
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