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sync uid database after every message. this is accompanied by a dbm ->

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db4 migration. patch by theodore, with some final polishing by me.
This commit is contained in:
Oswald Buddenhagen 2004-01-12 00:52:14 +00:00
parent 052195c982
commit 180f5fa201
4 changed files with 56 additions and 57 deletions
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24
configure.in
View file

@ -33,28 +33,8 @@ if test "x$ob_cv_with_ssl" != xno; then
])
fi
AC_CACHE_CHECK(for dbm_open, ac_cv_dbmopen,
[ac_cv_dbmopen=no
AC_TRY_LINK([#include <ndbm.h>],
[dbm_open(0,0,0);],[ac_cv_dbmopen=yes])])
if test $ac_cv_dbmopen = no; then
AC_CACHE_CHECK([for dbm_open in -ldb], ac_cv_libdb,
[save_LIBS="$LIBS"
LIBS="$LIBS -ldb"
ac_cv_libdb=no
AC_TRY_LINK([#define DB_DBM_HSEARCH 1
#include <db.h>],
[dbm_open(0,0,0);],
[ac_cv_libdb=yes])
LIBS="$save_LIBS"])
if test $ac_cv_libdb = yes; then
LIBS="$LIBS -ldb"
AC_DEFINE(HAVE_LIBDB, 1, [Define if you have libdb])
else
AC_MSG_ERROR([Could not find dbm_open(), you must install libdb])
fi
fi
AC_CHECK_LIB(db, db_create, [LIBS="$LIBS -ldb"], [AC_MSG_ERROR([Berkley DB not found.])])
AC_CHECK_HEADER(db.h, , [AC_MSG_ERROR([Berkley DB header file not found.])])
AC_OUTPUT(Makefile src/Makefile debian/Makefile isync.spec)

9
src/isync.h
View file

@ -26,12 +26,7 @@
#include <sys/types.h>
#if HAVE_LIBDB
# define DB_DBM_HSEARCH 1
# include <db.h>
#else
# include <ndbm.h>
#endif
#include <db.h>
#if HAVE_LIBSSL
# include <openssl/ssl.h>
@ -94,7 +89,7 @@ struct config
/* struct representing local mailbox file */
struct mailbox
{
DBM *db;
DB *db;
char *path;
message_t *msgs;
int lockfd;

59
src/maildir.c
View file

@ -125,8 +125,8 @@ maildir_open (const char *path, int flags)
int count = 0;
struct stat sb;
const char *subdirs[] = { "cur", "new", "tmp" };
int i;
datum key;
int i, ret;
DBT key, value;
m = calloc (1, sizeof (mailbox_t));
m->lockfd = -1;
@ -200,8 +200,18 @@ maildir_open (const char *path, int flags)
if (read_uid (m->path, "isyncmaxuid", &m->maxuid) == -1)
goto err;
snprintf (buf, sizeof (buf), "%s/isyncuidmap", m->path);
m->db = dbm_open (buf, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
snprintf (buf, sizeof (buf), "%s/isyncuidmap.db", m->path);
if (db_create (&m->db, 0, 0)) {
fputs ("dbcreate failed\n", stderr);
goto err;
}
if ((ret = m->db->set_pagesize (m->db, 4096)) != 0 ||
(ret = m->db->set_h_ffactor (m->db, 40)) != 0 ||
(ret = m->db->set_h_nelem (m->db, 1)) != 0) {
fputs ("Error configuring database\n", stderr);
goto err;
}
m->db->open (m->db, buf, 0, DB_HASH, DB_CREATE, S_IRUSR | S_IWUSR);
if (m->db == NULL)
{
fputs ("ERROR: unable to open UID db\n", stderr);
@ -237,19 +247,24 @@ maildir_open (const char *path, int flags)
/* determine the UID for this message. The basename (sans
* flags) is used as the key in the db
*/
key.dptr = p->file;
s = strchr (key.dptr, ':');
key.dsize = s ? (size_t) (s - key.dptr) : strlen (key.dptr);
key = dbm_fetch (m->db, key);
if (key.dptr)
{
p->uid = *(int *) key.dptr;
memset (&key, 0, sizeof(key));
memset (&value, 0, sizeof(value));
key.data = p->file;
s = strchr (p->file, ':');
key.size = s ? (size_t) (s - p->file) : strlen (p->file);
ret = m->db->get (m->db, 0, &key, &value, 0);
if (ret == DB_NOTFOUND) {
/* Every locally generated message triggers this ... */
/*printf ("Warning, no UID for message %.*s\n",
key.size, p->file);*/
} else if (ret) {
fprintf (stderr, "Unexpected error (%d) from db_get(%.*s)\n",
ret, key.size, p->file);
} else if (ret == 0) {
p->uid = *((int *) value.data);
if (p->uid > m->maxuid)
m->maxuid = p->uid;
}
else /* XXX remove. every locally generated message triggers this */
puts ("Warning, no UID for message");
if (s)
parse_info (p, s + 1);
if (p->flags & D_DELETED)
@ -262,7 +277,7 @@ maildir_open (const char *path, int flags)
err:
if (m->db)
dbm_close (m->db);
m->db->close (m->db, 0);
dotlock_unlock (&m->lockfd);
free (m->path);
free (m);
@ -278,7 +293,7 @@ maildir_expunge (mailbox_t * mbox, int dead)
message_t **cur = &mbox->msgs;
message_t *tmp;
char *s;
datum key;
DBT key;
char path[_POSIX_PATH_MAX];
while (*cur)
@ -292,10 +307,12 @@ maildir_expunge (mailbox_t * mbox, int dead)
if (unlink (path))
perror (path);
/* remove the message from the UID map */
key.dptr = tmp->file;
s = strchr (key.dptr, ':');
key.dsize = s ? (size_t) (s - key.dptr) : strlen (key.dptr);
dbm_delete (mbox->db, key);
memset (&key, 0, sizeof(key));
key.data = tmp->file;
s = strchr (tmp->file, ':');
key.size = s ? (size_t) (s - tmp->file) : strlen (key.data);
mbox->db->del (mbox->db, 0, &key, 0);
mbox->db->sync (mbox->db, 0);
*cur = (*cur)->next;
free (tmp->file);
free (tmp);
@ -386,7 +403,7 @@ void
maildir_close (mailbox_t * mbox)
{
if (mbox->db)
dbm_close (mbox->db);
mbox->db->close (mbox->db, 0);
/* release the mutex on the mailbox */
dotlock_unlock (&mbox->lockfd);

21
src/sync.c
View file

@ -46,17 +46,24 @@ find_msg (message_t * list, unsigned int uid)
}
static int
set_uid (DBM * db, const char *f, unsigned int uid)
set_uid (DB * db, const char *f, unsigned int uid)
{
char *s;
datum key, val;
DBT key, val;
int ret;
key.dptr = (void *) f;
memset (&key, 0, sizeof(key));
memset (&val, 0, sizeof(val));
key.data = (void *) f;
s = strchr (f, ':');
key.dsize = s ? (size_t) (s - key.dptr) : strlen (f);
val.dptr = (void *) &uid;
val.dsize = sizeof (uid);
dbm_store (db, key, val, DBM_REPLACE);
key.size = s ? (size_t) (s - f) : strlen (f);
val.data = (void *) &uid;
val.size = sizeof (uid);
ret = db->put (db, 0, &key, &val, 0);
if (ret < 0)
fprintf (stderr, "Unexpected error (%d) from db_put(%.*s, %d)\n",
ret, key.size, f, uid);
db->sync(db, 0);
return 0;
}