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authorKay Sievers <kay@vrfy.org>2014-02-23 00:46:26 +0100
committerKay Sievers <kay@vrfy.org>2014-02-23 01:53:40 +0100
commitf01de9656d0969633ac89eb57a0ba4658a100568 (patch)
tree20378f1b8097769aeb5753bc4295685efbc4210f /src/shared/bus-label.c
parentac4f16ab4d74c94e8a9d1608e05c0faf7d3fae76 (diff)
src/shared/ cannot reference symbols from libraries
../src/shared/unit-name.c:462: error: undefined reference to 'sd_bus_label_escape' ../src/shared/unit-name.c:477: error: undefined reference to 'sd_bus_label_unescape' collect2: error: ld returned 1 exit status
Diffstat (limited to 'src/shared/bus-label.c')
-rw-r--r--src/shared/bus-label.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/shared/bus-label.c b/src/shared/bus-label.c
new file mode 100644
index 0000000000..61eb75bca2
--- /dev/null
+++ b/src/shared/bus-label.c
@@ -0,0 +1,102 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 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 <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "util.h"
+#include "macro.h"
+#include "def.h"
+
+#include "bus-label.h"
+
+char *bus_label_escape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert_return(s, NULL);
+
+ /* Escapes all chars that D-Bus' object path cannot deal
+ * with. Can be reversed with bus_path_unescape(). We special
+ * case the empty string. */
+
+ if (*s == 0)
+ return strdup("_");
+
+ r = new(char, strlen(s)*3 + 1);
+ if (!r)
+ return NULL;
+
+ for (f = s, t = r; *f; f++) {
+
+ /* Escape everything that is not a-zA-Z0-9. We also
+ * escape 0-9 if it's the first character */
+
+ if (!(*f >= 'A' && *f <= 'Z') &&
+ !(*f >= 'a' && *f <= 'z') &&
+ !(f > s && *f >= '0' && *f <= '9')) {
+ *(t++) = '_';
+ *(t++) = hexchar(*f >> 4);
+ *(t++) = hexchar(*f);
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *bus_label_unescape(const char *f) {
+ char *r, *t;
+
+ assert_return(f, NULL);
+
+ /* Special case for the empty string */
+ if (streq(f, "_"))
+ return strdup("");
+
+ r = new(char, strlen(f) + 1);
+ if (!r)
+ return NULL;
+
+ for (t = r; *f; f++) {
+
+ if (*f == '_') {
+ int a, b;
+
+ if ((a = unhexchar(f[1])) < 0 ||
+ (b = unhexchar(f[2])) < 0) {
+ /* Invalid escape code, let's take it literal then */
+ *(t++) = '_';
+ } else {
+ *(t++) = (char) ((a << 4) | b);
+ f += 2;
+ }
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}