./move.sh

1 files changed, 188 insertions, 0 deletions

diff --git a/src/libshared/specifier.c b/src/libshared/specifier.c
new file mode 100644
index 0000000000..303ddf0401
--- /dev/null
+++ b/src/libshared/specifier.c
@@ -0,0 +1,188 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2010 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 <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+#include <systemd/sd-id128.h>
+
+#include "alloc-util.h"
+#include "hostname-util.h"
+#include "macro.h"
+#include "specifier.h"
+#include "string-util.h"
+
+/*
+ * Generic infrastructure for replacing %x style specifiers in
+ * strings. Will call a callback for each replacement.
+ *
+ */
+
+int specifier_printf(const char *text, const Specifier table[], void *userdata, char **_ret) {
+        char *ret, *t;
+        const char *f;
+        bool percent = false;
+        size_t l;
+        int r;
+
+        assert(text);
+        assert(table);
+
+        l = strlen(text);
+        ret = new(char, l+1);
+        if (!ret)
+                return -ENOMEM;
+
+        t = ret;
+
+        for (f = text; *f; f++, l--) {
+
+                if (percent) {
+                        if (*f == '%')
+                                *(t++) = '%';
+                        else {
+                                const Specifier *i;
+
+                                for (i = table; i->specifier; i++)
+                                        if (i->specifier == *f)
+                                                break;
+
+                                if (i->lookup) {
+                                        _cleanup_free_ char *w = NULL;
+                                        char *n;
+                                        size_t k, j;
+
+                                        r = i->lookup(i->specifier, i->data, userdata, &w);
+                                        if (r < 0) {
+                                                free(ret);
+                                                return r;
+                                        }
+
+                                        j = t - ret;
+                                        k = strlen(w);
+
+                                        n = new(char, j + k + l + 1);
+                                        if (!n) {
+                                                free(ret);
+                                                return -ENOMEM;
+                                        }
+
+                                        memcpy(n, ret, j);
+                                        memcpy(n + j, w, k);
+
+                                        free(ret);
+
+                                        ret = n;
+                                        t = n + j + k;
+                                } else {
+                                        *(t++) = '%';
+                                        *(t++) = *f;
+                                }
+                        }
+
+                        percent = false;
+                } else if (*f == '%')
+                        percent = true;
+                else
+                        *(t++) = *f;
+        }
+
+        *t = 0;
+        *_ret = ret;
+        return 0;
+}
+
+/* Generic handler for simple string replacements */
+
+int specifier_string(char specifier, void *data, void *userdata, char **ret) {
+        char *n;
+
+        n = strdup(strempty(data));
+        if (!n)
+                return -ENOMEM;
+
+        *ret = n;
+        return 0;
+}
+
+int specifier_machine_id(char specifier, void *data, void *userdata, char **ret) {
+        sd_id128_t id;
+        char *n;
+        int r;
+
+        r = sd_id128_get_machine(&id);
+        if (r < 0)
+                return r;
+
+        n = new(char, 33);
+        if (!n)
+                return -ENOMEM;
+
+        *ret = sd_id128_to_string(id, n);
+        return 0;
+}
+
+int specifier_boot_id(char specifier, void *data, void *userdata, char **ret) {
+        sd_id128_t id;
+        char *n;
+        int r;
+
+        r = sd_id128_get_boot(&id);
+        if (r < 0)
+                return r;
+
+        n = new(char, 33);
+        if (!n)
+                return -ENOMEM;
+
+        *ret = sd_id128_to_string(id, n);
+        return 0;
+}
+
+int specifier_host_name(char specifier, void *data, void *userdata, char **ret) {
+        char *n;
+
+        n = gethostname_malloc();
+        if (!n)
+                return -ENOMEM;
+
+        *ret = n;
+        return 0;
+}
+
+int specifier_kernel_release(char specifier, void *data, void *userdata, char **ret) {
+        struct utsname uts;
+        char *n;
+        int r;
+
+        r = uname(&uts);
+        if (r < 0)
+                return -errno;
+
+        n = strdup(uts.release);
+        if (!n)
+                return -ENOMEM;
+
+        *ret = n;
+        return 0;
+}