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-rw-r--r--src/libudev/Makefile.am2
-rw-r--r--src/libudev/device-nodes.c74
-rw-r--r--src/libudev/device-nodes.h23
-rw-r--r--src/libudev/libudev-util.c5
-rw-r--r--src/libudev/utf8.c122
-rw-r--r--src/libudev/utf8.h9
6 files changed, 178 insertions, 57 deletions
diff --git a/src/libudev/Makefile.am b/src/libudev/Makefile.am
index 568c4884b4..5211550857 100644
--- a/src/libudev/Makefile.am
+++ b/src/libudev/Makefile.am
@@ -35,6 +35,7 @@ libudev_la_SOURCES =\
libudev-hwdb.c \
cgroup-util.c \
conf-files.c \
+ device-nodes.c \
exit-status.c \
hashmap.c \
log.c \
@@ -52,6 +53,7 @@ noinst_HEADERS = \
cgroup-util.h \
conf-files.h \
def.h \
+ device-nodes.h \
exit-status.h \
hashmap.h \
ioprio.h \
diff --git a/src/libudev/device-nodes.c b/src/libudev/device-nodes.c
new file mode 100644
index 0000000000..c548f1ffff
--- /dev/null
+++ b/src/libudev/device-nodes.c
@@ -0,0 +1,74 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of eudev, forked from systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "device-nodes.h"
+#include "utf8.h"
+
+int whitelisted_char_for_devnode(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;
+}
+
+int encode_devnode_name(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] == '\\' || !whitelisted_char_for_devnode(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;
+}
diff --git a/src/libudev/device-nodes.h b/src/libudev/device-nodes.h
new file mode 100644
index 0000000000..57ed97d326
--- /dev/null
+++ b/src/libudev/device-nodes.h
@@ -0,0 +1,23 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of eudev, forked from systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+int encode_devnode_name(const char *str, char *str_enc, size_t len);
+int whitelisted_char_for_devnode(char c, const char *additional);
diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c
index b4452f60d4..4d59980a70 100644
--- a/src/libudev/libudev-util.c
+++ b/src/libudev/libudev-util.c
@@ -35,6 +35,7 @@
#include <sys/stat.h>
#include <sys/param.h>
+#include "device-nodes.h"
#include "libudev.h"
#include "libudev-private.h"
#include "utf8.h"
@@ -352,7 +353,7 @@ int util_replace_chars(char *str, const char *white)
while (str[i] != '\0') {
int len;
- if (is_utf8_encoding_whitelisted(str[i], white)) {
+ if (whitelisted_char_for_devnode(str[i], white)) {
i++;
continue;
}
@@ -400,7 +401,7 @@ int util_replace_chars(char *str, const char *white)
**/
_public_ int udev_util_encode_string(const char *str, char *str_enc, size_t len)
{
- return udev_encode_string(str, str_enc, len);
+ return encode_devnode_name(str, str_enc, len);
}
/*
diff --git a/src/libudev/utf8.c b/src/libudev/utf8.c
index c9e84b804c..1044fb6489 100644
--- a/src/libudev/utf8.c
+++ b/src/libudev/utf8.c
@@ -63,6 +63,19 @@ static inline bool is_unicode_valid(uint32_t ch) {
return true;
}
+
+static bool is_unicode_control(uint32_t ch) {
+
+ /*
+ 0 to ' '-1 is the C0 range.
+ DEL=0x7F, and DEL+1 to 0x9F is C1 range.
+ '\t' is in C0 range, but more or less harmless and commonly used.
+ */
+
+ return (ch < ' ' && ch != '\t' && ch != '\n') ||
+ (0x7F <= ch && ch <= 0x9F);
+}
+
/* 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];
@@ -121,24 +134,73 @@ int utf8_encoded_to_unichar(const char *str) {
return unichar;
}
-const char *utf8_is_valid(const char *str) {
+bool utf8_is_printable(const char* str, size_t length) {
const uint8_t *p;
assert(str);
- for (p = (const uint8_t*) str; *p; ) {
- int len;
+ for (p = (const uint8_t*) str; length;) {
+ int encoded_len = utf8_encoded_valid_unichar((const char *)p);
+ int val = utf8_encoded_to_unichar((const char*)p);
- len = utf8_encoded_valid_unichar((const char *)p);
+ if (encoded_len < 0 || val < 0 || is_unicode_control(val))
+ return false;
+
+ length -= encoded_len;
+ p += encoded_len;
+ }
+
+ return true;
+}
- if (len < 0)
+char *ascii_is_valid(const char *str) {
+ const char *p;
+
+ assert(str);
+
+ for (p = str; *p; p++)
+ if ((unsigned char) *p >= 128)
return NULL;
- p += len;
+ return (char*) str;
+}
+
+char *utf16_to_utf8(const void *s, size_t length) {
+ char *r;
+ const uint8_t *f;
+ uint8_t *t;
+
+ r = new(char, (length*3+1)/2 + 1);
+ if (!r)
+ return NULL;
+
+ t = (uint8_t*) r;
+
+ for (f = s; f < (const uint8_t*) s + length; f += 2) {
+ uint16_t c;
+
+ c = (f[1] << 8) | f[0];
+
+ if (c == 0) {
+ *t = 0;
+ return r;
+ } else if (c < 0x80) {
+ *(t++) = (uint8_t) c;
+ } else if (c < 0x800) {
+ *(t++) = (uint8_t) (0xc0 | (c >> 6));
+ *(t++) = (uint8_t) (0x80 | (c & 0x3f));
+ } else {
+ *(t++) = (uint8_t) (0xe0 | (c >> 12));
+ *(t++) = (uint8_t) (0x80 | ((c >> 6) & 0x3f));
+ *(t++) = (uint8_t) (0x80 | (c & 0x3f));
+ }
}
- return str;
+ *t = 0;
+
+ return r;
}
+
/* expected size used to encode one unicode char */
static int utf8_unichar_to_encoded_len(int unichar) {
if (unichar < 0x80)
@@ -185,49 +247,3 @@ int utf8_encoded_valid_unichar(const char *str) {
return len;
}
-
-int is_utf8_encoding_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;
-}
-
-int udev_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_utf8_encoding_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;
-}
diff --git a/src/libudev/utf8.h b/src/libudev/utf8.h
index 380036da18..9d09153c1c 100644
--- a/src/libudev/utf8.h
+++ b/src/libudev/utf8.h
@@ -21,6 +21,11 @@
#include "macro.h"
+char *ascii_is_valid(const char *s) _pure_;
+
+bool utf8_is_printable(const char* str, size_t length) _pure_;
+
+char *utf16_to_utf8(const void *s, size_t length);
+
int utf8_encoded_valid_unichar(const char *str);
-int is_utf8_encoding_whitelisted(char c, const char *white);
-int udev_encode_string(const char *str, char *str_enc, size_t len);
+int utf8_encoded_to_unichar(const char *str);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-24 23:18:09 +0000