X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fjournal%2Fjournal-authenticate.c;h=674f81218f4c3489fb570f8461e7e62ea58a8537;hb=f2cc3753ce0e85960f0299855c3b98ba60efa580;hp=93cc9d94a1804e9fca421b78f23cf1e20a1efab5;hpb=feb12d3ed2c7f9132c64773c7c41b9e3a608a814;p=elogind.git

diff --git a/src/journal/journal-authenticate.c b/src/journal/journal-authenticate.c
index 93cc9d94a..674f81218 100644
--- a/src/journal/journal-authenticate.c
+++ b/src/journal/journal-authenticate.c
@@ -66,7 +66,7 @@ int journal_file_append_tag(JournalFile *f) {
 
         /* Add the tag object itself, so that we can protect its
          * header. This will exclude the actual hash value in it */
-        r = journal_file_hmac_put_object(f, OBJECT_TAG, p);
+        r = journal_file_hmac_put_object(f, OBJECT_TAG, o, p);
         if (r < 0)
                 return r;
 
@@ -211,6 +211,9 @@ int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime) {
         if (!f->seal)
                 return 0;
 
+        if (realtime <= 0)
+                realtime = now(CLOCK_REALTIME);
+
         r = journal_file_fsprg_need_evolve(f, realtime);
         if (r <= 0)
                 return 0;
@@ -226,9 +229,8 @@ int journal_file_maybe_append_tag(JournalFile *f, uint64_t realtime) {
         return 0;
 }
 
-int journal_file_hmac_put_object(JournalFile *f, int type, uint64_t p) {
+int journal_file_hmac_put_object(JournalFile *f, int type, Object *o, uint64_t p) {
         int r;
-        Object *o;
 
         assert(f);
 
@@ -239,9 +241,14 @@ int journal_file_hmac_put_object(JournalFile *f, int type, uint64_t p) {
         if (r < 0)
                 return r;
 
-        r = journal_file_move_to_object(f, type, p, &o);
-        if (r < 0)
-                return r;
+        if (!o) {
+                r = journal_file_move_to_object(f, type, p, &o);
+                if (r < 0)
+                        return r;
+        } else {
+                if (type >= 0 && o->object.type != type)
+                        return -EBADMSG;
+        }
 
         gcry_md_write(f->hmac, o, offsetof(ObjectHeader, payload));
 
@@ -325,7 +332,9 @@ int journal_file_fss_load(JournalFile *f) {
 
         fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY, 0600);
         if (fd < 0) {
-                log_error("Failed to open %s: %m", p);
+                if (errno != ENOENT)
+                        log_error("Failed to open %s: %m", p);
+
                 r = -errno;
                 goto finish;
         }
@@ -362,7 +371,7 @@ int journal_file_fss_load(JournalFile *f) {
                 goto finish;
         }
 
-        if (le64toh(m->fsprg_state_size) != FSPRG_stateinbytes(m->fsprg_secpar)) {
+        if (le64toh(m->fsprg_state_size) != FSPRG_stateinbytes(le16toh(m->fsprg_secpar))) {
                 r = -EBADMSG;
                 goto finish;
         }
@@ -410,12 +419,26 @@ finish:
         return r;
 }
 
+static void initialize_libgcrypt(void) {
+        const char *p;
+
+        if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P))
+                return;
+
+        p = gcry_check_version("1.4.5");
+        assert(p);
+
+        gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
+}
+
 int journal_file_hmac_setup(JournalFile *f) {
         gcry_error_t e;
 
         if (!f->seal)
                 return 0;
 
+        initialize_libgcrypt();
+
         e = gcry_md_open(&f->hmac, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC);
         if (e != 0)
                 return -ENOTSUP;
@@ -441,7 +464,7 @@ int journal_file_append_first_tag(JournalFile *f) {
                 return -EINVAL;
         p -= offsetof(Object, hash_table.items);
 
-        r = journal_file_hmac_put_object(f, OBJECT_FIELD_HASH_TABLE, p);
+        r = journal_file_hmac_put_object(f, OBJECT_FIELD_HASH_TABLE, NULL, p);
         if (r < 0)
                 return r;
 
@@ -450,7 +473,7 @@ int journal_file_append_first_tag(JournalFile *f) {
                 return -EINVAL;
         p -= offsetof(Object, hash_table.items);
 
-        r = journal_file_hmac_put_object(f, OBJECT_DATA_HASH_TABLE, p);
+        r = journal_file_hmac_put_object(f, OBJECT_DATA_HASH_TABLE, NULL, p);
         if (r < 0)
                 return r;
 
@@ -517,3 +540,19 @@ int journal_file_parse_verification_key(JournalFile *f, const char *key) {
 
         return 0;
 }
+
+bool journal_file_next_evolve_usec(JournalFile *f, usec_t *u) {
+        uint64_t epoch;
+
+        assert(f);
+        assert(u);
+
+        if (!f->seal)
+                return false;
+
+        epoch = FSPRG_GetEpoch(f->fsprg_state);
+
+        *u = (usec_t) (f->fss_start_usec + f->fss_interval_usec * epoch + f->fss_interval_usec);
+
+        return true;
+}