#include <sys/stat.h>
#include <sys/param.h>
+#include "device-nodes.h"
#include "libudev.h"
#include "libudev-private.h"
+#include "utf8.h"
/**
* SECTION:libudev-util
return -EINVAL;
base[0] = '\0';
}
- if (base == NULL)
- return -EINVAL;
+
strscpyl(base, size - (base - syspath), "/", &link_target[back * 3], NULL);
return 0;
}
path[--len] = '\0';
}
-/* count of characters used to encode one unicode char */
-static int utf8_encoded_expected_len(const char *str)
-{
- unsigned char c = (unsigned char)str[0];
-
- if (c < 0x80)
- return 1;
- if ((c & 0xe0) == 0xc0)
- return 2;
- if ((c & 0xf0) == 0xe0)
- return 3;
- if ((c & 0xf8) == 0xf0)
- return 4;
- if ((c & 0xfc) == 0xf8)
- return 5;
- if ((c & 0xfe) == 0xfc)
- return 6;
- return 0;
-}
-
-/* decode one unicode char */
-static int utf8_encoded_to_unichar(const char *str)
-{
- int unichar;
- int len;
- int i;
-
- len = utf8_encoded_expected_len(str);
- switch (len) {
- case 1:
- return (int)str[0];
- case 2:
- unichar = str[0] & 0x1f;
- break;
- case 3:
- unichar = (int)str[0] & 0x0f;
- break;
- case 4:
- unichar = (int)str[0] & 0x07;
- break;
- case 5:
- unichar = (int)str[0] & 0x03;
- break;
- case 6:
- unichar = (int)str[0] & 0x01;
- break;
- default:
- return -1;
- }
-
- for (i = 1; i < len; i++) {
- if (((int)str[i] & 0xc0) != 0x80)
- return -1;
- unichar <<= 6;
- unichar |= (int)str[i] & 0x3f;
- }
-
- return unichar;
-}
-
-/* expected size used to encode one unicode char */
-static int utf8_unichar_to_encoded_len(int unichar)
-{
- if (unichar < 0x80)
- return 1;
- if (unichar < 0x800)
- return 2;
- if (unichar < 0x10000)
- return 3;
- if (unichar < 0x200000)
- return 4;
- if (unichar < 0x4000000)
- return 5;
- return 6;
-}
-
-/* check if unicode char has a valid numeric range */
-static int utf8_unichar_valid_range(int unichar)
-{
- if (unichar > 0x10ffff)
- return 0;
- if ((unichar & 0xfffff800) == 0xd800)
- return 0;
- if ((unichar > 0xfdcf) && (unichar < 0xfdf0))
- return 0;
- if ((unichar & 0xffff) == 0xffff)
- return 0;
- return 1;
-}
-
-/* validate one encoded unicode char and return its length */
-static int utf8_encoded_valid_unichar(const char *str)
-{
- int len;
- int unichar;
- int i;
-
- len = utf8_encoded_expected_len(str);
- if (len == 0)
- return -1;
-
- /* ascii is valid */
- if (len == 1)
- return 1;
-
- /* check if expected encoded chars are available */
- for (i = 0; i < len; i++)
- if ((str[i] & 0x80) != 0x80)
- return -1;
-
- unichar = utf8_encoded_to_unichar(str);
-
- /* check if encoded length matches encoded value */
- if (utf8_unichar_to_encoded_len(unichar) != len)
- return -1;
-
- /* check if value has valid range */
- if (!utf8_unichar_valid_range(unichar))
- return -1;
-
- return len;
-}
-
int util_replace_whitespace(const char *str, char *to, size_t len)
{
size_t i, j;
return 0;
}
-static int is_whitelisted(char c, const char *white)
-{
- if ((c >= '0' && c <= '9') ||
- (c >= 'A' && c <= 'Z') ||
- (c >= 'a' && c <= 'z') ||
- strchr("#+-.:=@_", c) != NULL ||
- (white != NULL && strchr(white, c) != NULL))
- return 1;
- return 0;
-}
-
/* allow chars in whitelist, plain ascii, hex-escaping and valid utf8 */
int util_replace_chars(char *str, const char *white)
{
while (str[i] != '\0') {
int len;
- if (is_whitelisted(str[i], white)) {
+ if (whitelisted_char_for_devnode(str[i], white)) {
i++;
continue;
}
**/
_public_ int udev_util_encode_string(const char *str, char *str_enc, size_t len)
{
- size_t i, j;
-
- if (str == NULL || str_enc == NULL)
- return -1;
-
- for (i = 0, j = 0; str[i] != '\0'; i++) {
- int seqlen;
-
- seqlen = utf8_encoded_valid_unichar(&str[i]);
- if (seqlen > 1) {
- if (len-j < (size_t)seqlen)
- goto err;
- memcpy(&str_enc[j], &str[i], seqlen);
- j += seqlen;
- i += (seqlen-1);
- } else if (str[i] == '\\' || !is_whitelisted(str[i], NULL)) {
- if (len-j < 4)
- goto err;
- sprintf(&str_enc[j], "\\x%02x", (unsigned char) str[i]);
- j += 4;
- } else {
- if (len-j < 1)
- goto err;
- str_enc[j] = str[i];
- j++;
- }
- }
- if (len-j < 1)
- goto err;
- str_enc[j] = '\0';
- return 0;
-err:
- return -1;
+ return encode_devnode_name(str, str_enc, len);
}
/*
* Murmurhash is under the MIT license.
*
*/
-static unsigned int murmur_hash2(const char *key, int len, unsigned int seed)
+static unsigned int murmur_hash2(const char *key, size_t len, unsigned int seed)
{
/*
* 'm' and 'r' are mixing constants generated offline.
/* mix 4 bytes at a time into the hash */
const unsigned char * data = (const unsigned char *)key;
- while(len >= 4) {
- unsigned int k = *(unsigned int *)data;
+ while(len >= sizeof(unsigned int)) {
+ unsigned int k;
+ memcpy(&k, data, sizeof(k));
k *= m;
k ^= k >> r;
k *= m;
h *= m;
h ^= k;
- data += 4;
- len -= 4;
+ data += sizeof(k);
+ len -= sizeof(k);
}
/* handle the last few bytes of the input array */
~ianmdlvl / elogind.git / blobdiff