vsyslog(priority, format, args);
}
-static void set_str(char *to, const char *from, size_t count)
-{
- size_t i, j, len;
-
- /* strip trailing whitespace */
- len = strnlen(from, count);
- while (len && isspace(from[len-1]))
- len--;
-
- /* strip leading whitespace */
- i = 0;
- while (isspace(from[i]) && (i < len))
- i++;
-
- j = 0;
- while (i < len) {
- /* substitute multiple whitespace */
- if (isspace(from[i])) {
- while (isspace(from[i]))
- i++;
- to[j++] = '_';
- }
- /* skip chars */
- if (from[i] == '/') {
- i++;
- continue;
- }
- to[j++] = from[i++];
- }
- to[j] = '\0';
-}
-
int main(int argc, char *argv[])
{
struct udev *udev;
goto close;
}
- set_str(model, (char *) id.model, 40);
- set_str(serial, (char *) id.serial_no, 20);
- set_str(revision, (char *) id.fw_rev, 8);
+ udev_util_replace_whitespace((char *) id.model, model, 40);
+ udev_util_replace_whitespace((char *) id.serial_no, serial, 20);
+ udev_util_replace_whitespace((char *) id.fw_rev, revision, 8);
if (export) {
if ((id.config >> 8) & 0x80) {
vsyslog(priority, format, args);
}
-static void set_str(char *to, const char *from, size_t count)
-{
- size_t i, j, len;
-
- /* strip trailing whitespace */
- len = strnlen(from, count);
- while (len && isspace(from[len-1]))
- len--;
-
- /* strip leading whitespace */
- i = 0;
- while (isspace(from[i]) && (i < len))
- i++;
-
- j = 0;
- while (i < len) {
- /* substitute multiple whitespace */
- if (isspace(from[i])) {
- while (isspace(from[i]))
- i++;
- to[j++] = '_';
- }
- /* skip chars */
- if (from[i] == '/') {
- i++;
- continue;
- }
- to[j++] = from[i++];
- }
- to[j] = '\0';
-}
-
-static void set_type(char *to, const char *from, size_t len)
+static void set_type(const char *from, char *to, size_t len)
{
int type_num;
char *eptr;
if (retval)
return retval;
- set_str(vendor_str, dev_scsi->vendor, sizeof(vendor_str));
- set_str(model_str, dev_scsi->model, sizeof(model_str));
- set_type(type_str, dev_scsi->type, sizeof(type_str));
- set_str(revision_str, dev_scsi->revision, sizeof(revision_str));
-
+ udev_util_replace_whitespace(dev_scsi->vendor, vendor_str, sizeof(vendor_str));
+ udev_util_replace_whitespace(dev_scsi->model, model_str, sizeof(model_str));
+ set_type(dev_scsi->type, type_str, sizeof(type_str));
+ udev_util_replace_whitespace(dev_scsi->revision, revision_str, sizeof(revision_str));
return 0;
}
printf("ID_VENDOR=%s\n", vendor_str);
printf("ID_MODEL=%s\n", model_str);
printf("ID_REVISION=%s\n", revision_str);
- set_str(serial_str, dev_scsi.serial, sizeof(serial_str));
+ udev_util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
printf("ID_SERIAL=%s\n", serial_str);
- set_str(serial_str, serial_short, sizeof(serial_str));
+ udev_util_replace_whitespace(serial_short, serial_str, sizeof(serial_str));
printf("ID_SERIAL_SHORT=%s\n", serial_str);
printf("ID_TYPE=%s\n", type_str);
} else {
static int use_usb_info;
static int use_num_info;
-static void set_str(char *to, const char *from, size_t count)
-{
- size_t i, j, len;
-
- /* strip trailing whitespace */
- len = strnlen(from, count);
- while (len && isspace(from[len-1]))
- len--;
-
- /* strip leading whitespace */
- i = 0;
- while (isspace(from[i]) && (i < len))
- i++;
-
- j = 0;
- while (i < len) {
- /* substitute multiple whitespace */
- if (isspace(from[i])) {
- while (isspace(from[i]))
- i++;
- to[j++] = '_';
- }
- /* Replace '/' with '.' */
- if (from[i] == '/') {
- to[j++] = '.';
- i++;
- continue;
- }
- /* skip non-printable chars */
- if (!isalnum(from[i]) && !ispunct(from[i])) {
- i++;
- continue;
- }
- to[j++] = from[i++];
- }
- to[j] = '\0';
-}
-
static void set_usb_iftype(char *to, int if_class_num, size_t len)
{
char *type = "generic";
udev_device_get_sysname(dev_scsi));
goto fallback;
}
- set_str(vendor_str, scsi_vendor, sizeof(vendor_str)-1);
+ udev_util_replace_whitespace(scsi_vendor, vendor_str, sizeof(vendor_str)-1);
scsi_model = udev_device_get_sysattr_value(dev_scsi, "model");
if (!scsi_model) {
udev_device_get_sysname(dev_scsi));
goto fallback;
}
- set_str(model_str, scsi_model, sizeof(model_str)-1);
+ udev_util_replace_whitespace(scsi_model, model_str, sizeof(model_str)-1);
scsi_type = udev_device_get_sysattr_value(dev_scsi, "type");
if (!scsi_type) {
udev_device_get_sysname(dev_scsi));
goto fallback;
}
- set_str(revision_str, scsi_rev, sizeof(revision_str)-1);
+ udev_util_replace_whitespace(scsi_rev, revision_str, sizeof(revision_str)-1);
/*
* some broken devices have the same identifiers
info(udev, "No USB vendor information available\n");
return 1;
}
- set_str(vendor_str, usb_vendor, sizeof(vendor_str)-1);
+ udev_util_replace_whitespace(usb_vendor, vendor_str, sizeof(vendor_str)-1);
}
if (model_str[0] == '\0') {
dbg(udev, "No USB model information available\n");
return 1;
}
- set_str(model_str, usb_model, sizeof(model_str)-1);
+ udev_util_replace_whitespace(usb_model, model_str, sizeof(model_str)-1);
}
if (revision_str[0] == '\0') {
usb_rev = udev_device_get_sysattr_value(dev_usb, "bcdDevice");
if (usb_rev)
- set_str(revision_str, usb_rev, sizeof(revision_str)-1);
+ udev_util_replace_whitespace(usb_rev, revision_str, sizeof(revision_str)-1);
}
if (serial_str[0] == '\0') {
usb_serial = udev_device_get_sysattr_value(dev_usb, "serial");
if (usb_serial)
- set_str(serial_str, usb_serial, sizeof(serial_str)-1);
+ udev_util_replace_whitespace(usb_serial, serial_str, sizeof(serial_str)-1);
}
return 0;
}
return;
}
-static void set_str(char *to, const char *from, size_t count)
-{
- size_t i, j, len;
-
- /* strip trailing whitespace */
- len = strnlen(from, count);
- while (len && isspace(from[len-1]))
- len--;
-
- /* strip leading whitespace */
- i = 0;
- while (isspace(from[i]) && (i < len))
- i++;
-
- j = 0;
- while (i < len) {
- /* substitute multiple whitespace */
- if (isspace(from[i])) {
- while (isspace(from[i]))
- i++;
- to[j++] = '_';
- }
- /* skip chars */
- if (from[i] == '/') {
- i++;
- continue;
- }
- to[j++] = from[i++];
- }
- to[j] = '\0';
-}
-
static int all_probers(volume_id_probe_fn_t probe_fn,
struct volume_id *id, uint64_t off, uint64_t size,
void *data)
goto exit;
}
- set_str(label_safe, label, sizeof(label_safe));
- util_replace_chars(label_safe, ALLOWED_CHARS_INPUT);
+ udev_util_replace_whitespace(label, label_safe, sizeof(label_safe));
+ udev_util_replace_chars(label_safe, UDEV_ALLOWED_CHARS_INPUT);
volume_id_encode_string(label, label_enc, sizeof(label_enc));
- set_str(uuid_safe, uuid, sizeof(uuid_safe));
- util_replace_chars(uuid_safe, ALLOWED_CHARS_INPUT);
+ udev_util_replace_whitespace(uuid, uuid_safe, sizeof(uuid_safe));
+ udev_util_replace_chars(uuid_safe, UDEV_ALLOWED_CHARS_INPUT);
volume_id_encode_string(uuid, uuid_enc, sizeof(uuid_enc));
volume_id_encode_string(type, type_enc, sizeof(type_enc));
extern int udev_queue_export_device_failed(struct udev_queue *udev_queue, struct udev_device *udev_device);
/* libudev-utils */
-#define UTIL_PATH_SIZE 1024
-#define UTIL_LINE_SIZE 2048
-#define UTIL_NAME_SIZE 512
+#define UTIL_PATH_SIZE 1024
+#define UTIL_LINE_SIZE 2048
+#define UTIL_NAME_SIZE 512
+#define UDEV_ALLOWED_CHARS_INPUT "/ $%?,"
extern ssize_t util_get_sys_subsystem(struct udev *udev, const char *syspath, char *subsystem, size_t size);
extern ssize_t util_get_sys_driver(struct udev *udev, const char *syspath, char *driver, size_t size);
extern int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size);
extern void util_remove_trailing_chars(char *path, char c);
extern size_t util_strlcpy(char *dst, const char *src, size_t size);
extern size_t util_strlcat(char *dst, const char *src, size_t size);
-extern int util_replace_chars(char *str, const char *white);
+extern int udev_util_replace_whitespace(const char *str, char *to, size_t len);
+extern int udev_util_replace_chars(char *str, const char *white);
+extern int udev_util_encode_string(const char *str, char *str_enc, size_t len);
#endif
return len;
}
+int udev_util_replace_whitespace(const char *str, char *to, size_t len)
+{
+ size_t i, j;
+
+ /* strip trailing whitespace */
+ len = strnlen(str, len);
+ while (len && isspace(str[len-1]))
+ len--;
+
+ /* strip leading whitespace */
+ i = 0;
+ while (isspace(str[i]) && (i < len))
+ i++;
+
+ j = 0;
+ while (i < len) {
+ /* substitute multiple whitespace with a single '_' */
+ if (isspace(str[i])) {
+ while (isspace(str[i]))
+ i++;
+ to[j++] = '_';
+ }
+ to[j++] = str[i++];
+ }
+ to[j] = '\0';
+ 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)
+int udev_util_replace_chars(char *str, const char *white)
{
size_t i = 0;
int replaced = 0;
while (str[i] != '\0') {
int len;
- /* accept whitelist */
- if (white != NULL && strchr(white, str[i]) != NULL) {
- i++;
- continue;
- }
-
- /* accept plain ascii char */
- if ((str[i] >= '0' && str[i] <= '9') ||
- (str[i] >= 'A' && str[i] <= 'Z') ||
- (str[i] >= 'a' && str[i] <= 'z')) {
+ if (is_whitelisted(str[i], white)) {
i++;
continue;
}
i++;
replaced++;
}
-
return replaced;
}
+
+/**
+ * util_encode_string:
+ * @str: input string to be encoded
+ * @str_enc: output string to store the encoded input string
+ * @len: maximum size of the output string, which may be
+ * four times as long as the input string
+ *
+ * Encode all potentially unsafe characters of a string to the
+ * corresponding hex value prefixed by '\x'.
+ *
+ * Returns: 0 if the entire string was copied, non-zero otherwise.
+ **/
+int udev_util_encode_string(const char *str, char *str_enc, size_t len)
+{
+ size_t i, j;
+
+ if (str == NULL || str_enc == NULL || len == 0)
+ return -1;
+
+ str_enc[0] = '\0';
+ for (i = 0, j = 0; str[i] != '\0'; i++) {
+ int seqlen;
+
+ seqlen = utf8_encoded_valid_unichar(&str[i]);
+ if (seqlen > 1) {
+ memcpy(&str_enc[j], &str[i], seqlen);
+ j += seqlen;
+ i += (seqlen-1);
+ } else if (str[i] == '\\' || !is_whitelisted(str[i], NULL)) {
+ sprintf(&str_enc[j], "\\x%02x", (unsigned char) str[i]);
+ j += 4;
+ } else {
+ str_enc[j] = str[i];
+ j++;
+ }
+ if (j+3 >= len)
+ goto err;
+ }
+ str_enc[j] = '\0';
+ return 0;
+err:
+ return -1;
+}
size = strlen(value);
while (size > 0 && isspace(value[--size]))
value[size] = '\0';
- count = util_replace_chars(value, ALLOWED_CHARS_INPUT);
+ count = udev_util_replace_chars(value, UDEV_ALLOWED_CHARS_INPUT);
if (count > 0)
info(event->udev, "%i character(s) replaced\n" , count);
util_strlcat(string, value, maxsize);
util_remove_trailing_chars(result, '\n');
if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
- count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
+ count = udev_util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
if (count > 0)
info(event->udev, "%i character(s) replaced\n" , count);
}
util_strlcpy(name_str, name, sizeof(name_str));
udev_event_apply_format(event, name_str, sizeof(name_str));
if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
- count = util_replace_chars(name_str, ALLOWED_CHARS_FILE);
+ count = udev_util_replace_chars(name_str, "/");
if (count > 0)
info(event->udev, "%i character(s) replaced\n", count);
free(event->name);
util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp));
udev_event_apply_format(event, temp, sizeof(temp));
if (esc == ESCAPE_UNSET)
- count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
+ count = udev_util_replace_chars(temp, "/ ");
else if (esc == ESCAPE_REPLACE)
- count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
+ count = udev_util_replace_chars(temp, "/");
if (count > 0)
info(event->udev, "%i character(s) replaced\n" , count);
dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
#include "lib/libudev.h"
#include "lib/libudev-private.h"
-#define ALLOWED_CHARS "#+-.:=@_"
-#define ALLOWED_CHARS_FILE ALLOWED_CHARS "/"
-#define ALLOWED_CHARS_INPUT ALLOWED_CHARS_FILE " $%?,"
-
#define DEFAULT_FAKE_PARTITIONS_COUNT 15
#define UDEV_EVENT_TIMEOUT 180
projects / systemd / commitdiff