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Diffstat (limited to 'src')
-rw-r--r--src/conf-parser.c66
-rw-r--r--src/load-fragment.c102
-rw-r--r--src/service.c13
-rw-r--r--src/utf8.c214
-rw-r--r--src/utf8.h33
-rw-r--r--src/util.c17
6 files changed, 378 insertions, 67 deletions
diff --git a/src/conf-parser.c b/src/conf-parser.c
index c7dd01aa1d..135b175c09 100644
--- a/src/conf-parser.c
+++ b/src/conf-parser.c
@@ -30,6 +30,7 @@
#include "macro.h"
#include "strv.h"
#include "log.h"
+#include "utf8.h"
int config_item_table_lookup(
void *table,
@@ -584,14 +585,23 @@ int config_parse_string(
assert(rvalue);
assert(data);
- if (*rvalue) {
- if (!(n = strdup(rvalue)))
- return -ENOMEM;
- } else
- n = NULL;
+ n = cunescape(rvalue);
+ if (!n)
+ return -ENOMEM;
+
+ if (!utf8_is_valid(n)) {
+ log_error("[%s:%u] String is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+ free(n);
+ return 0;
+ }
free(*s);
- *s = n;
+ if (*n)
+ *s = n;
+ else {
+ free(n);
+ *s = NULL;
+ }
return 0;
}
@@ -614,12 +624,18 @@ int config_parse_path(
assert(rvalue);
assert(data);
+ if (!utf8_is_valid(rvalue)) {
+ log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+ return 0;
+ }
+
if (!path_is_absolute(rvalue)) {
log_error("[%s:%u] Not an absolute path, ignoring: %s", filename, line, rvalue);
return 0;
}
- if (!(n = strdup(rvalue)))
+ n = strdup(rvalue);
+ if (!n)
return -ENOMEM;
path_kill_slashes(n);
@@ -646,6 +662,7 @@ int config_parse_strv(
unsigned k;
size_t l;
char *state;
+ int r;
assert(filename);
assert(lvalue);
@@ -656,7 +673,8 @@ int config_parse_strv(
FOREACH_WORD_QUOTED(w, l, rvalue, state)
k++;
- if (!(n = new(char*, k+1)))
+ n = new(char*, k+1);
+ if (!n)
return -ENOMEM;
if (*sv)
@@ -665,9 +683,21 @@ int config_parse_strv(
else
k = 0;
- FOREACH_WORD_QUOTED(w, l, rvalue, state)
- if (!(n[k++] = cunescape_length(w, l)))
+ FOREACH_WORD_QUOTED(w, l, rvalue, state) {
+ n[k] = cunescape_length(w, l);
+ if (!n[k]) {
+ r = -ENOMEM;
goto fail;
+ }
+
+ if (!utf8_is_valid(n[k])) {
+ log_error("[%s:%u] String is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+ free(n[k]);
+ continue;
+ }
+
+ k++;
+ }
n[k] = NULL;
free(*sv);
@@ -680,7 +710,7 @@ fail:
free(n[k-1]);
free(n);
- return -ENOMEM;
+ return r;
}
int config_parse_path_strv(
@@ -710,7 +740,8 @@ int config_parse_path_strv(
FOREACH_WORD_QUOTED(w, l, rvalue, state)
k++;
- if (!(n = new(char*, k+1)))
+ n = new(char*, k+1);
+ if (!n)
return -ENOMEM;
k = 0;
@@ -719,11 +750,18 @@ int config_parse_path_strv(
n[k] = (*sv)[k];
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
- if (!(n[k] = cunescape_length(w, l))) {
+ n[k] = strndup(w, l);
+ if (!n[k]) {
r = -ENOMEM;
goto fail;
}
+ if (!utf8_is_valid(n[k])) {
+ log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+ free(n[k]);
+ continue;
+ }
+
if (!path_is_absolute(n[k])) {
log_error("[%s:%u] Not an absolute path, ignoring: %s", filename, line, rvalue);
free(n[k]);
@@ -731,7 +769,6 @@ int config_parse_path_strv(
}
path_kill_slashes(n[k]);
-
k++;
}
@@ -742,7 +779,6 @@ int config_parse_path_strv(
return 0;
fail:
- free(n[k]);
for (; k > 0; k--)
free(n[k-1]);
free(n);
diff --git a/src/load-fragment.c b/src/load-fragment.c
index b963d7f995..637c82b427 100644
--- a/src/load-fragment.c
+++ b/src/load-fragment.c
@@ -43,6 +43,7 @@
#include "missing.h"
#include "unit-name.h"
#include "bus-errors.h"
+#include "utf8.h"
#ifndef HAVE_SYSV_COMPAT
int config_parse_warn_compat(
@@ -90,7 +91,6 @@ int config_parse_unit_deps(
k = unit_name_printf(u, t);
free(t);
-
if (!k)
return -ENOMEM;
@@ -128,22 +128,18 @@ int config_parse_unit_names(
char *t, *k;
int r;
- if (!(t = strndup(w, l)))
+ t = strndup(w, l);
+ if (!t)
return -ENOMEM;
k = unit_name_printf(u, t);
free(t);
-
if (!k)
return -ENOMEM;
r = unit_merge_by_name(u, k);
-
- if (r < 0) {
+ if (r < 0)
log_error("Failed to add name %s, ignoring: %s", k, strerror(-r));
- free(k);
- return 0;
- }
free(k);
}
@@ -162,27 +158,22 @@ int config_parse_unit_string_printf(
void *userdata) {
Unit *u = userdata;
- char **s = data;
char *k;
+ int r;
assert(filename);
assert(lvalue);
assert(rvalue);
- assert(s);
assert(u);
- if (!(k = unit_full_printf(u, rvalue)))
+ k = unit_full_printf(u, rvalue);
+ if (!k)
return -ENOMEM;
- free(*s);
- if (*k)
- *s = k;
- else {
- free(k);
- *s = NULL;
- }
+ r = config_parse_string(filename, line, section, lvalue, ltype, k, data, userdata);
+ free (k);
- return 0;
+ return r;
}
int config_parse_unit_strv_printf(
@@ -225,30 +216,22 @@ int config_parse_unit_path_printf(
void *userdata) {
Unit *u = userdata;
- char **s = data;
char *k;
+ int r;
assert(filename);
assert(lvalue);
assert(rvalue);
- assert(s);
assert(u);
- if (!(k = unit_full_printf(u, rvalue)))
+ k = unit_full_printf(u, rvalue);
+ if (!k)
return -ENOMEM;
- if (!path_is_absolute(k)) {
- log_error("[%s:%u] Not an absolute path: %s", filename, line, k);
- free(k);
- return -EINVAL;
- }
-
- path_kill_slashes(k);
-
- free(*s);
- *s = k;
+ r = config_parse_path(filename, line, section, lvalue, ltype, k, data, userdata);
+ free(k);
- return 0;
+ return r;
}
int config_parse_socket_listen(
@@ -271,7 +254,8 @@ int config_parse_socket_listen(
s = SOCKET(data);
- if (!(p = new0(SocketPort, 1)))
+ p = new0(SocketPort, 1);
+ if (!p)
return -ENOMEM;
if (streq(lvalue, "ListenFIFO")) {
@@ -478,6 +462,7 @@ int config_parse_exec(
ExecCommand **e = data, *nce;
char *path, **n;
unsigned k;
+ int r;
assert(filename);
assert(lvalue);
@@ -528,7 +513,8 @@ int config_parse_exec(
k++;
}
- if (!(n = new(char*, k + !honour_argv0)))
+ n = new(char*, k + !honour_argv0);
+ if (!n)
return -ENOMEM;
k = 0;
@@ -538,11 +524,33 @@ int config_parse_exec(
if (honour_argv0 && w == rvalue) {
assert(!path);
- if (!(path = cunescape_length(w, l)))
+
+ path = strndup(w, l);
+ if (!path) {
+ r = -ENOMEM;
goto fail;
+ }
+
+ if (!utf8_is_valid(path)) {
+ log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+ r = 0;
+ goto fail;
+ }
+
} else {
- if (!(n[k++] = cunescape_length(w, l)))
+ char *c;
+
+ c = n[k++] = cunescape_length(w, l);
+ if (!c) {
+ r = -ENOMEM;
goto fail;
+ }
+
+ if (!utf8_is_valid(c)) {
+ log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+ r = 0;
+ goto fail;
+ }
}
}
@@ -550,19 +558,25 @@ int config_parse_exec(
if (!n[0]) {
log_error("[%s:%u] Invalid command line, ignoring: %s", filename, line, rvalue);
- strv_free(n);
- free(path);
- return 0;
+ r = 0;
+ goto fail;
}
- if (!path)
- if (!(path = strdup(n[0])))
+ if (!path) {
+ path = strdup(n[0]);
+ if (!path) {
+ r = -ENOMEM;
goto fail;
+ }
+ }
assert(path_is_absolute(path));
- if (!(nce = new0(ExecCommand, 1)))
+ nce = new0(ExecCommand, 1);
+ if (!nce) {
+ r = -ENOMEM;
goto fail;
+ }
nce->argv = n;
nce->path = path;
@@ -583,7 +597,7 @@ fail:
free(path);
free(nce);
- return -ENOMEM;
+ return r;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type");
diff --git a/src/service.c b/src/service.c
index babd9cf9a5..8b5c0b07c4 100644
--- a/src/service.c
+++ b/src/service.c
@@ -39,6 +39,7 @@
#include "exit-status.h"
#include "def.h"
#include "util.h"
+#include "utf8.h"
#ifdef HAVE_SYSV_COMPAT
@@ -3200,11 +3201,19 @@ static void service_notify_message(Unit *u, pid_t pid, char **tags) {
}
/* Interpret STATUS= */
- if ((e = strv_find_prefix(tags, "STATUS="))) {
+ e = strv_find_prefix(tags, "STATUS=");
+ if (e) {
char *t;
if (e[7]) {
- if (!(t = strdup(e+7))) {
+
+ if (!utf8_is_valid(e+7)) {
+ log_warning("Status message in notification is not UTF-8 clean.");
+ return;
+ }
+
+ t = strdup(e+7);
+ if (!t) {
log_error("Failed to allocate string.");
return;
}
diff --git a/src/utf8.c b/src/utf8.c
new file mode 100644
index 0000000000..11619dce2f
--- /dev/null
+++ b/src/utf8.c
@@ -0,0 +1,214 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd 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.
+
+ 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+/* This file is based on the GLIB utf8 validation functions. The
+ * original license text follows. */
+
+/* gutf8.c - Operations on UTF-8 strings.
+ *
+ * Copyright (C) 1999 Tom Tromey
+ * Copyright (C) 2000 Red Hat, Inc.
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "utf8.h"
+
+#define FILTER_CHAR '_'
+
+static inline bool is_unicode_valid(uint32_t ch) {
+
+ if (ch >= 0x110000) /* End of unicode space */
+ return false;
+ if ((ch & 0xFFFFF800) == 0xD800) /* Reserved area for UTF-16 */
+ return false;
+ if ((ch >= 0xFDD0) && (ch <= 0xFDEF)) /* Reserved */
+ return false;
+ if ((ch & 0xFFFE) == 0xFFFE) /* BOM (Byte Order Mark) */
+ return false;
+
+ return true;
+}
+
+static inline bool is_continuation_char(uint8_t ch) {
+ if ((ch & 0xc0) != 0x80) /* 10xxxxxx */
+ return false;
+ return true;
+}
+
+static inline void merge_continuation_char(uint32_t *u_ch, uint8_t ch) {
+ *u_ch <<= 6;
+ *u_ch |= ch & 0x3f;
+}
+
+static char* utf8_validate(const char *str, char *output) {
+ uint32_t val = 0;
+ uint32_t min = 0;
+ const uint8_t *p, *last;
+ int size;
+ uint8_t *o;
+
+ assert(str);
+
+ o = (uint8_t*) output;
+ for (p = (const uint8_t*) str; *p; p++) {
+ if (*p < 128) {
+ if (o)
+ *o = *p;
+ } else {
+ last = p;
+
+ if ((*p & 0xe0) == 0xc0) { /* 110xxxxx two-char seq. */
+ size = 2;
+ min = 128;
+ val = (uint32_t) (*p & 0x1e);
+ goto ONE_REMAINING;
+ } else if ((*p & 0xf0) == 0xe0) { /* 1110xxxx three-char seq.*/
+ size = 3;
+ min = (1 << 11);
+ val = (uint32_t) (*p & 0x0f);
+ goto TWO_REMAINING;
+ } else if ((*p & 0xf8) == 0xf0) { /* 11110xxx four-char seq */
+ size = 4;
+ min = (1 << 16);
+ val = (uint32_t) (*p & 0x07);
+ } else
+ goto error;
+
+ p++;
+ if (!is_continuation_char(*p))
+ goto error;
+ merge_continuation_char(&val, *p);
+
+ TWO_REMAINING:
+ p++;
+ if (!is_continuation_char(*p))
+ goto error;
+ merge_continuation_char(&val, *p);
+
+ ONE_REMAINING:
+ p++;
+ if (!is_continuation_char(*p))
+ goto error;
+ merge_continuation_char(&val, *p);
+
+ if (val < min)
+ goto error;
+
+ if (!is_unicode_valid(val))
+ goto error;
+
+ if (o) {
+ memcpy(o, last, (size_t) size);
+ o += size;
+ }
+
+ continue;
+
+ error:
+ if (o) {
+ *o = FILTER_CHAR;
+ p = last; /* We retry at the next character */
+ } else
+ goto failure;
+ }
+
+ if (o)
+ o++;
+ }
+
+ if (o) {
+ *o = '\0';
+ return output;
+ }
+
+ return (char*) str;
+
+failure:
+ return NULL;
+}
+
+char* utf8_is_valid (const char *str) {
+ return utf8_validate(str, NULL);
+}
+
+char* utf8_filter (const char *str) {
+ char *new_str;
+
+ assert(str);
+
+ new_str = malloc(strlen(str) + 1);
+ if (!new_str)
+ return NULL;
+
+ return utf8_validate(str, new_str);
+}
+
+char *ascii_is_valid(const char *str) {
+ const char *p;
+
+ assert(str);
+
+ for (p = str; *p; p++)
+ if ((unsigned char) *p >= 128)
+ return NULL;
+
+ return (char*) str;
+}
+
+char *ascii_filter(const char *str) {
+ char *r, *s, *d;
+ size_t l;
+
+ assert(str);
+
+ l = strlen(str);
+ r = malloc(l + 1);
+ if (!r)
+ return NULL;
+
+ for (s = r, d = r; *s; s++)
+ if ((unsigned char) *s < 128)
+ *(d++) = *s;
+
+ *d = 0;
+
+ return r;
+}
diff --git a/src/utf8.h b/src/utf8.h
new file mode 100644
index 0000000000..9a72bec084
--- /dev/null
+++ b/src/utf8.h
@@ -0,0 +1,33 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef fooutf8hfoo
+#define fooutf8hfoo
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd 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.
+
+ 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "macro.h"
+
+char *utf8_is_valid(const char *s) _pure_;
+char *ascii_is_valid(const char *s) _pure_;
+
+char *utf8_filter(const char *s);
+char *ascii_filter(const char *s);
+
+#endif
diff --git a/src/util.c b/src/util.c
index bf22f575c7..3a855c1be4 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1833,7 +1833,8 @@ char *cunescape_length(const char *s, size_t length) {
/* Undoes C style string escaping */
- if (!(r = new(char, length+1)))
+ r = new(char, length+1);
+ if (!r)
return r;
for (f = s, t = r; f < s + length; f++) {
@@ -1887,8 +1888,10 @@ char *cunescape_length(const char *s, size_t length) {
/* hexadecimal encoding */
int a, b;
- if ((a = unhexchar(f[1])) < 0 ||
- (b = unhexchar(f[2])) < 0) {
+ a = unhexchar(f[1]);
+ b = unhexchar(f[2]);
+
+ if (a < 0 || b < 0) {
/* Invalid escape code, let's take it literal then */
*(t++) = '\\';
*(t++) = 'x';
@@ -1911,9 +1914,11 @@ char *cunescape_length(const char *s, size_t length) {
/* octal encoding */
int a, b, c;
- if ((a = unoctchar(f[0])) < 0 ||
- (b = unoctchar(f[1])) < 0 ||
- (c = unoctchar(f[2])) < 0) {
+ a = unoctchar(f[0]);
+ b = unoctchar(f[1]);
+ c = unoctchar(f[2]);
+
+ if (a < 0 || b < 0 || c < 0) {
/* Invalid escape code, let's take it literal then */
*(t++) = '\\';
*(t++) = f[0];
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-26 22:07:41 +0000