Merge pull request #2289 from poettering/dnssec13

Thirteenth DNSSEC patch set

8 files changed, 180 insertions, 105 deletions

diff --git a/src/basic/fd-util.h b/src/basic/fd-util.h
index 5ce1592eeb..973413ff42 100644
--- a/src/basic/fd-util.h
+++ b/src/basic/fd-util.h
@@ -73,3 +73,6 @@ int same_fd(int a, int b);
 void cmsg_close_all(struct msghdr *mh);
 
 bool fdname_is_valid(const char *s);
+
+#define ERRNO_IS_DISCONNECT(r) \
+        IN_SET(r, ENOTCONN, ECONNRESET, ECONNREFUSED, ECONNABORTED, EPIPE)
diff --git a/src/basic/hash-funcs.c b/src/basic/hash-funcs.c
new file mode 100644
index 0000000000..d4affaffee
--- /dev/null
+++ b/src/basic/hash-funcs.c
@@ -0,0 +1,83 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+  Copyright 2014 Michal Schmidt
+
+  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 "hash-funcs.h"
+
+void string_hash_func(const void *p, struct siphash *state) {
+        siphash24_compress(p, strlen(p) + 1, state);
+}
+
+int string_compare_func(const void *a, const void *b) {
+        return strcmp(a, b);
+}
+
+const struct hash_ops string_hash_ops = {
+        .hash = string_hash_func,
+        .compare = string_compare_func
+};
+
+void trivial_hash_func(const void *p, struct siphash *state) {
+        siphash24_compress(&p, sizeof(p), state);
+}
+
+int trivial_compare_func(const void *a, const void *b) {
+        return a < b ? -1 : (a > b ? 1 : 0);
+}
+
+const struct hash_ops trivial_hash_ops = {
+        .hash = trivial_hash_func,
+        .compare = trivial_compare_func
+};
+
+void uint64_hash_func(const void *p, struct siphash *state) {
+        siphash24_compress(p, sizeof(uint64_t), state);
+}
+
+int uint64_compare_func(const void *_a, const void *_b) {
+        uint64_t a, b;
+        a = *(const uint64_t*) _a;
+        b = *(const uint64_t*) _b;
+        return a < b ? -1 : (a > b ? 1 : 0);
+}
+
+const struct hash_ops uint64_hash_ops = {
+        .hash = uint64_hash_func,
+        .compare = uint64_compare_func
+};
+
+#if SIZEOF_DEV_T != 8
+void devt_hash_func(const void *p, struct siphash *state) {
+        siphash24_compress(p, sizeof(dev_t), state);
+}
+
+int devt_compare_func(const void *_a, const void *_b) {
+        dev_t a, b;
+        a = *(const dev_t*) _a;
+        b = *(const dev_t*) _b;
+        return a < b ? -1 : (a > b ? 1 : 0);
+}
+
+const struct hash_ops devt_hash_ops = {
+        .hash = devt_hash_func,
+        .compare = devt_compare_func
+};
+#endif
diff --git a/src/basic/hash-funcs.h b/src/basic/hash-funcs.h
new file mode 100644
index 0000000000..c640eaf4d1
--- /dev/null
+++ b/src/basic/hash-funcs.h
@@ -0,0 +1,67 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+  Copyright 2014 Michal Schmidt
+
+  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 "macro.h"
+#include "siphash24.h"
+
+typedef void (*hash_func_t)(const void *p, struct siphash *state);
+typedef int (*compare_func_t)(const void *a, const void *b);
+
+struct hash_ops {
+        hash_func_t hash;
+        compare_func_t compare;
+};
+
+void string_hash_func(const void *p, struct siphash *state);
+int string_compare_func(const void *a, const void *b) _pure_;
+extern const struct hash_ops string_hash_ops;
+
+/* This will compare the passed pointers directly, and will not
+ * dereference them. This is hence not useful for strings or
+ * suchlike. */
+void trivial_hash_func(const void *p, struct siphash *state);
+int trivial_compare_func(const void *a, const void *b) _const_;
+extern const struct hash_ops trivial_hash_ops;
+
+/* 32bit values we can always just embed in the pointer itself, but
+ * in order to support 32bit archs we need store 64bit values
+ * indirectly, since they don't fit in a pointer. */
+void uint64_hash_func(const void *p, struct siphash *state);
+int uint64_compare_func(const void *a, const void *b) _pure_;
+extern const struct hash_ops uint64_hash_ops;
+
+/* On some archs dev_t is 32bit, and on others 64bit. And sometimes
+ * it's 64bit on 32bit archs, and sometimes 32bit on 64bit archs. Yuck! */
+#if SIZEOF_DEV_T != 8
+void devt_hash_func(const void *p, struct siphash *state) _pure_;
+int devt_compare_func(const void *a, const void *b) _pure_;
+extern const struct hash_ops devt_hash_ops = {
+        .hash = devt_hash_func,
+        .compare = devt_compare_func
+};
+#else
+#define devt_hash_func uint64_hash_func
+#define devt_compare_func uint64_compare_func
+#define devt_hash_ops uint64_hash_ops
+#endif
diff --git a/src/basic/hashmap.c b/src/basic/hashmap.c
index 286ddfef5b..dcd8ae412d 100644
--- a/src/basic/hashmap.c
+++ b/src/basic/hashmap.c
@@ -280,66 +280,6 @@ static const struct hashmap_type_info hashmap_type_info[_HASHMAP_TYPE_MAX] = {
         },
 };
 
-void string_hash_func(const void *p, struct siphash *state) {
-        siphash24_compress(p, strlen(p) + 1, state);
-}
-
-int string_compare_func(const void *a, const void *b) {
-        return strcmp(a, b);
-}
-
-const struct hash_ops string_hash_ops = {
-        .hash = string_hash_func,
-        .compare = string_compare_func
-};
-
-void trivial_hash_func(const void *p, struct siphash *state) {
-        siphash24_compress(&p, sizeof(p), state);
-}
-
-int trivial_compare_func(const void *a, const void *b) {
-        return a < b ? -1 : (a > b ? 1 : 0);
-}
-
-const struct hash_ops trivial_hash_ops = {
-        .hash = trivial_hash_func,
-        .compare = trivial_compare_func
-};
-
-void uint64_hash_func(const void *p, struct siphash *state) {
-        siphash24_compress(p, sizeof(uint64_t), state);
-}
-
-int uint64_compare_func(const void *_a, const void *_b) {
-        uint64_t a, b;
-        a = *(const uint64_t*) _a;
-        b = *(const uint64_t*) _b;
-        return a < b ? -1 : (a > b ? 1 : 0);
-}
-
-const struct hash_ops uint64_hash_ops = {
-        .hash = uint64_hash_func,
-        .compare = uint64_compare_func
-};
-
-#if SIZEOF_DEV_T != 8
-void devt_hash_func(const void *p, struct siphash *state) {
-        siphash24_compress(p, sizeof(dev_t), state);
-}
-
-int devt_compare_func(const void *_a, const void *_b) {
-        dev_t a, b;
-        a = *(const dev_t*) _a;
-        b = *(const dev_t*) _b;
-        return a < b ? -1 : (a > b ? 1 : 0);
-}
-
-const struct hash_ops devt_hash_ops = {
-        .hash = devt_hash_func,
-        .compare = devt_compare_func
-};
-#endif
-
 static unsigned n_buckets(HashmapBase *h) {
         return h->has_indirect ? h->indirect.n_buckets
                                : hashmap_type_info[h->type].n_direct_buckets;
diff --git a/src/basic/hashmap.h b/src/basic/hashmap.h
index 708811124b..fdba9c61ff 100644
--- a/src/basic/hashmap.h
+++ b/src/basic/hashmap.h
@@ -26,8 +26,8 @@
 #include <stdbool.h>
 #include <stddef.h>
 
+#include "hash-funcs.h"
 #include "macro.h"
-#include "siphash24.h"
 #include "util.h"
 
 /*
@@ -70,47 +70,6 @@ typedef struct {
 #define _IDX_ITERATOR_FIRST (UINT_MAX - 1)
 #define ITERATOR_FIRST ((Iterator) { .idx = _IDX_ITERATOR_FIRST, .next_key = NULL })
 
-typedef void (*hash_func_t)(const void *p, struct siphash *state);
-typedef int (*compare_func_t)(const void *a, const void *b);
-
-struct hash_ops {
-        hash_func_t hash;
-        compare_func_t compare;
-};
-
-void string_hash_func(const void *p, struct siphash *state);
-int string_compare_func(const void *a, const void *b) _pure_;
-extern const struct hash_ops string_hash_ops;
-
-/* This will compare the passed pointers directly, and will not
- * dereference them. This is hence not useful for strings or
- * suchlike. */
-void trivial_hash_func(const void *p, struct siphash *state);
-int trivial_compare_func(const void *a, const void *b) _const_;
-extern const struct hash_ops trivial_hash_ops;
-
-/* 32bit values we can always just embedd in the pointer itself, but
- * in order to support 32bit archs we need store 64bit values
- * indirectly, since they don't fit in a pointer. */
-void uint64_hash_func(const void *p, struct siphash *state);
-int uint64_compare_func(const void *a, const void *b) _pure_;
-extern const struct hash_ops uint64_hash_ops;
-
-/* On some archs dev_t is 32bit, and on others 64bit. And sometimes
- * it's 64bit on 32bit archs, and sometimes 32bit on 64bit archs. Yuck! */
-#if SIZEOF_DEV_T != 8
-void devt_hash_func(const void *p, struct siphash *state) _pure_;
-int devt_compare_func(const void *a, const void *b) _pure_;
-extern const struct hash_ops devt_hash_ops = {
-        .hash = devt_hash_func,
-        .compare = devt_compare_func
-};
-#else
-#define devt_hash_func uint64_hash_func
-#define devt_compare_func uint64_compare_func
-#define devt_hash_ops uint64_hash_ops
-#endif
-
 /* Macros for type checking */
 #define PTR_COMPATIBLE_WITH_HASHMAP_BASE(h) \
         (__builtin_types_compatible_p(typeof(h), HashmapBase*) || \
diff --git a/src/basic/siphash24.h b/src/basic/siphash24.h
index 3f7e20362b..54e2420cc6 100644
--- a/src/basic/siphash24.h
+++ b/src/basic/siphash24.h
@@ -16,6 +16,8 @@ struct siphash {
 
 void siphash24_init(struct siphash *state, const uint8_t k[16]);
 void siphash24_compress(const void *in, size_t inlen, struct siphash *state);
+#define siphash24_compress_byte(byte, state) siphash24_compress((const uint8_t[]) { (byte) }, 1, (state))
+
 uint64_t siphash24_finalize(struct siphash *state);
 
 uint64_t siphash24(const void *in, size_t inlen, const uint8_t k[16]);
diff --git a/src/basic/string-util.c b/src/basic/string-util.c
index 8178c7093f..849e457439 100644
--- a/src/basic/string-util.c
+++ b/src/basic/string-util.c
@@ -317,14 +317,33 @@ char *truncate_nl(char *s) {
         return s;
 }
 
+char ascii_tolower(char x) {
+
+        if (x >= 'A' && x <= 'Z')
+                return x - 'A' + 'a';
+
+        return x;
+}
+
 char *ascii_strlower(char *t) {
         char *p;
 
         assert(t);
 
         for (p = t; *p; p++)
-                if (*p >= 'A' && *p <= 'Z')
-                        *p = *p - 'A' + 'a';
+                *p = ascii_tolower(*p);
+
+        return t;
+}
+
+char *ascii_strlower_n(char *t, size_t n) {
+        size_t i;
+
+        if (n <= 0)
+                return t;
+
+        for (i = 0; i < n; i++)
+                t[i] = ascii_tolower(t[i]);
 
         return t;
 }
diff --git a/src/basic/string-util.h b/src/basic/string-util.h
index b59b9b5a71..1ac6bcd6f8 100644
--- a/src/basic/string-util.h
+++ b/src/basic/string-util.h
@@ -130,7 +130,9 @@ char *strstrip(char *s);
 char *delete_chars(char *s, const char *bad);
 char *truncate_nl(char *s);
 
-char *ascii_strlower(char *path);
+char ascii_tolower(char x);
+char *ascii_strlower(char *s);
+char *ascii_strlower_n(char *s, size_t n);
 
 bool chars_intersect(const char *a, const char *b) _pure_;