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Diffstat (limited to 'extras/volume_id/lib/util.c')
-rw-r--r--extras/volume_id/lib/util.c449
1 files changed, 0 insertions, 449 deletions
diff --git a/extras/volume_id/lib/util.c b/extras/volume_id/lib/util.c
deleted file mode 100644
index ea5ff16e91..0000000000
--- a/extras/volume_id/lib/util.c
+++ /dev/null
@@ -1,449 +0,0 @@
-/*
- * volume_id - reads filesystem label and uuid
- *
- * Copyright (C) 2005-2007 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-
-#include "libvolume_id.h"
-#include "libvolume_id-private.h"
-
-/* 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 */
-int volume_id_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;
-}
-
-size_t volume_id_set_unicode16(uint8_t *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count)
-{
- size_t i, j;
- uint16_t c;
-
- j = 0;
- for (i = 0; i + 2 <= count; i += 2) {
- if (endianess == LE)
- c = (buf[i+1] << 8) | buf[i];
- else
- c = (buf[i] << 8) | buf[i+1];
- if (c == 0) {
- str[j] = '\0';
- break;
- } else if (c < 0x80) {
- if (j+1 >= len)
- break;
- str[j++] = (uint8_t) c;
- } else if (c < 0x800) {
- if (j+2 >= len)
- break;
- str[j++] = (uint8_t) (0xc0 | (c >> 6));
- str[j++] = (uint8_t) (0x80 | (c & 0x3f));
- } else {
- if (j+3 >= len)
- break;
- str[j++] = (uint8_t) (0xe0 | (c >> 12));
- str[j++] = (uint8_t) (0x80 | ((c >> 6) & 0x3f));
- str[j++] = (uint8_t) (0x80 | (c & 0x3f));
- }
- }
- str[j] = '\0';
- return j;
-}
-
-static char *usage_to_string(enum volume_id_usage usage_id)
-{
- switch (usage_id) {
- case VOLUME_ID_FILESYSTEM:
- return "filesystem";
- case VOLUME_ID_OTHER:
- return "other";
- case VOLUME_ID_RAID:
- return "raid";
- case VOLUME_ID_CRYPTO:
- return "crypto";
- case VOLUME_ID_UNUSED:
- return "unused";
- }
- return NULL;
-}
-
-void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id)
-{
- id->usage_id = usage_id;
- id->usage = usage_to_string(usage_id);
-}
-
-void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count)
-{
- if (count > sizeof(id->label_raw))
- count = sizeof(id->label_raw);
-
- memcpy(id->label_raw, buf, count);
- id->label_raw_len = count;
-}
-
-void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count)
-{
- size_t i;
-
- if (count >= sizeof(id->label))
- count = sizeof(id->label)-1;
-
- memcpy(id->label, buf, count);
- id->label[count] = '\0';
-
- /* remove trailing whitespace */
- i = strnlen(id->label, count);
- while (i--) {
- if (!isspace(id->label[i]))
- break;
- }
- id->label[i+1] = '\0';
-}
-
-void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count)
-{
- if (count >= sizeof(id->label))
- count = sizeof(id->label)-1;
-
- volume_id_set_unicode16((uint8_t *)id->label, sizeof(id->label), buf, endianess, count);
-}
-
-static void set_uuid(const uint8_t *buf, size_t len, enum uuid_format format,
- char *uuid, uint8_t *uuid_raw, size_t *uuid_raw_len)
-{
- unsigned int i;
- unsigned int count = 0;
-
- switch(format) {
- case UUID_STRING:
- count = len;
- break;
- case UUID_HEX_STRING:
- count = len;
- break;
- case UUID_DOS:
- count = 4;
- break;
- case UUID_64BIT_LE:
- count = 8;
- break;
- case UUID_DCE:
- count = 16;
- break;
- case UUID_MD:
- count = 35;
- break;
- case UUID_LVM:
- count = 32;
- break;
- }
- memcpy(uuid_raw, buf, count);
- *uuid_raw_len = count;
-
- /* if set, create string in the same format, the native platform uses */
- for (i = 0; i < count; i++)
- if (buf[i] != 0)
- goto set;
- return;
-
-set:
- switch(format) {
- case UUID_DOS:
- sprintf(uuid, "%02X%02X-%02X%02X",
- buf[3], buf[2], buf[1], buf[0]);
- break;
- case UUID_64BIT_LE:
- sprintf(uuid,"%02X%02X%02X%02X%02X%02X%02X%02X",
- buf[7], buf[6], buf[5], buf[4],
- buf[3], buf[2], buf[1], buf[0]);
- break;
- case UUID_DCE:
- sprintf(uuid,
- "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
- buf[0], buf[1], buf[2], buf[3],
- buf[4], buf[5],
- buf[6], buf[7],
- buf[8], buf[9],
- buf[10], buf[11], buf[12], buf[13], buf[14],buf[15]);
- break;
- case UUID_HEX_STRING:
- /* translate A..F to a..f */
- memcpy(uuid, buf, count);
- for (i = 0; i < count; i++)
- if (uuid[i] >= 'A' && uuid[i] <= 'F')
- uuid[i] = (uuid[i] - 'A') + 'a';
- uuid[count] = '\0';
- break;
- case UUID_STRING:
- memcpy(uuid, buf, count);
- uuid[count] = '\0';
- break;
- case UUID_MD:
- sprintf(uuid,
- "%02x%02x%02x%02x:%02x%02x%02x%02x:%02x%02x%02x%02x:%02x%02x%02x%02x",
- buf[0], buf[1], buf[2], buf[3],
- buf[4], buf[5], buf[6], buf[7],
- buf[8], buf[9], buf[10], buf[11],
- buf[12], buf[13], buf[14],buf[15]);
- break;
- case UUID_LVM:
- sprintf(uuid,
- "%c%c%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c%c%c",
- buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
- buf[6], buf[7], buf[8], buf[9],
- buf[10], buf[11], buf[12], buf[13],
- buf[14], buf[15], buf[16], buf[17],
- buf[18], buf[19], buf[20], buf[21],
- buf[22], buf[23], buf[24], buf[25],
- buf[26], buf[27], buf[28], buf[29], buf[30], buf[31]);
- break;
- }
-}
-
-void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, size_t len, enum uuid_format format)
-{
- if (len > sizeof(id->uuid_raw))
- len = sizeof(id->uuid_raw);
-
- set_uuid(buf, len, format, id->uuid, id->uuid_raw, &id->uuid_raw_len);
-}
-
-void volume_id_set_uuid_sub(struct volume_id *id, const uint8_t *buf, size_t len, enum uuid_format format)
-{
- if (len > sizeof(id->uuid_sub_raw))
- len = sizeof(id->uuid_sub_raw);
-
- set_uuid(buf, len, format, id->uuid_sub, id->uuid_sub_raw, &id->uuid_sub_raw_len);
-}
-
-uint8_t *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len)
-{
- ssize_t buf_len;
-
- info("get buffer off 0x%" PRIx64 "(%" PRIu64 "), len 0x%zx\n", off, off, len);
- /* check if requested area fits in superblock buffer */
- if (off + len <= SB_BUFFER_SIZE) {
- if (id->sbbuf == NULL) {
- id->sbbuf = malloc(SB_BUFFER_SIZE);
- if (id->sbbuf == NULL) {
- dbg("error malloc\n");
- return NULL;
- }
- }
-
- /* check if we need to read */
- if ((off + len) > id->sbbuf_len) {
- info("read sbbuf len:0x%" PRIx64 "\n", (off + len));
- if (lseek(id->fd, 0, SEEK_SET) < 0) {
- dbg("lseek failed (%s)\n", strerror(errno));
- return NULL;
- }
- buf_len = read(id->fd, id->sbbuf, off + len);
- if (buf_len < 0) {
- dbg("read failed (%s)\n", strerror(errno));
- return NULL;
- }
- dbg("got 0x%zx (%zi) bytes\n", buf_len, buf_len);
- id->sbbuf_len = buf_len;
- if ((size_t)buf_len < off + len) {
- dbg("requested 0x%zx bytes, got only 0x%zx bytes\n", len, buf_len);
- return NULL;
- }
- }
-
- return &(id->sbbuf[off]);
- } else {
- if (len > SEEK_BUFFER_SIZE) {
- dbg("seek buffer too small %d\n", SEEK_BUFFER_SIZE);
- return NULL;
- }
-
- /* get seek buffer */
- if (id->seekbuf == NULL) {
- id->seekbuf = malloc(SEEK_BUFFER_SIZE);
- if (id->seekbuf == NULL) {
- dbg("error malloc\n");
- return NULL;
- }
- }
-
- /* check if we need to read */
- if ((off < id->seekbuf_off) || ((off + len) > (id->seekbuf_off + id->seekbuf_len))) {
- info("read seekbuf off:0x%" PRIx64 " len:0x%zx\n", off, len);
- if (lseek(id->fd, off, SEEK_SET) < 0) {
- dbg("lseek failed (%s)\n", strerror(errno));
- return NULL;
- }
- buf_len = read(id->fd, id->seekbuf, len);
- if (buf_len < 0) {
- dbg("read failed (%s)\n", strerror(errno));
- return NULL;
- }
- dbg("got 0x%zx (%zi) bytes\n", buf_len, buf_len);
- id->seekbuf_off = off;
- id->seekbuf_len = buf_len;
- if ((size_t)buf_len < len) {
- dbg("requested 0x%zx bytes, got only 0x%zx bytes\n", len, buf_len);
- return NULL;
- }
- }
-
- return &(id->seekbuf[off - id->seekbuf_off]);
- }
-}
-
-void volume_id_free_buffer(struct volume_id *id)
-{
- if (id->sbbuf != NULL) {
- free(id->sbbuf);
- id->sbbuf = NULL;
- id->sbbuf_len = 0;
- }
- if (id->seekbuf != NULL) {
- free(id->seekbuf);
- id->seekbuf = NULL;
- id->seekbuf_len = 0;
- }
-}
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