コード例 #1
0
ファイル: dbm.c プロジェクト: KunZheng/mosbench
static dav_error * dav_propdb_get_rollback(dav_db *db,
                                           const dav_prop_name *name,
                                           dav_deadprop_rollback **prollback)
{
    dav_deadprop_rollback *rb = apr_pcalloc(db->pool, sizeof(*rb));
    apr_datum_t key;
    apr_datum_t value;
    dav_error *err;

    key = dav_build_key(db, name);
    rb->key.dptr = apr_pstrdup(db->pool, key.dptr);
    rb->key.dsize = key.dsize;

    if ((err = dav_dbm_fetch(db, key, &value)) != NULL)
        return err;
    if (value.dptr != NULL) {
        rb->value.dptr = apr_pmemdup(db->pool, value.dptr, value.dsize);
        rb->value.dsize = value.dsize;
    }

    *prollback = rb;
    return NULL;
}
コード例 #2
0
ファイル: dbm.c プロジェクト: KunZheng/mosbench
static dav_error * dav_propdb_output_value(dav_db *db,
                                           const dav_prop_name *name,
                                           dav_xmlns_info *xi,
                                           apr_text_header *phdr,
                                           int *found)
{
    apr_datum_t key = dav_build_key(db, name);
    apr_datum_t value;
    dav_error *err;

    if ((err = dav_dbm_fetch(db, key, &value)) != NULL)
        return err;
    if (value.dptr == NULL) {
        *found = 0;
        return NULL;
    }
    *found = 1;

    dav_append_prop(db->pool, key.dptr, value.dptr, phdr);

    dav_dbm_freedatum(db, value);

    return NULL;
}
コード例 #3
0
/*
** dav_load_lock_record:  Reads lock information about key from lock db;
**    creates linked lists of the direct and indirect locks.
**
**    If add_method = DAV_APPEND_LIST, the result will be appended to the
**    head of the direct and indirect lists supplied.
**
**    Passive lock removal:  If lock has timed out, it will not be returned.
**    ### How much "logging" does RFC 2518 require?
*/
static dav_error * dav_fs_load_lock_record(dav_lockdb *lockdb, apr_datum_t key,
                                           int add_method,
                                           dav_lock_discovery **direct,
                                           dav_lock_indirect **indirect)
{
    apr_pool_t *p = lockdb->info->pool;
    dav_error *err;
    apr_size_t offset = 0;
    int need_save = DAV_FALSE;
    apr_datum_t val = { 0 };
    dav_lock_discovery *dp;
    dav_lock_indirect *ip;
    dav_buffer buf = { 0 };

    if (add_method != DAV_APPEND_LIST) {
        *direct = NULL;
        *indirect = NULL;
    }

    if ((err = dav_fs_really_open_lockdb(lockdb)) != NULL) {
        /* ### add a higher-level error? */
        return err;
    }

    /*
    ** If we opened readonly and the db wasn't there, then there are no
    ** locks for this resource. Just exit.
    */
    if (lockdb->info->db == NULL)
        return NULL;

    if ((err = dav_dbm_fetch(lockdb->info->db, key, &val)) != NULL)
        return err;

    if (!val.dsize)
        return NULL;

    while (offset < val.dsize) {
        switch (*(val.dptr + offset++)) {
        case DAV_LOCK_DIRECT:
            /* Create and fill a dav_lock_discovery structure */

            dp = apr_pcalloc(p, sizeof(*dp));
            memcpy(dp, val.dptr + offset, sizeof(dp->f));
            offset += sizeof(dp->f);
            dp->locktoken = apr_pmemdup(p, val.dptr + offset, sizeof(*dp->locktoken));
            offset += sizeof(*dp->locktoken);
            if (*(val.dptr + offset) == '\0') {
                ++offset;
            }
            else {
                dp->owner = apr_pstrdup(p, val.dptr + offset);
                offset += strlen(dp->owner) + 1;
            }

            if (*(val.dptr + offset) == '\0') {
                ++offset;
            }
            else {
                dp->auth_user = apr_pstrdup(p, val.dptr + offset);
                offset += strlen(dp->auth_user) + 1;
            }

            if (!dav_fs_lock_expired(dp->f.timeout)) {
                dp->next = *direct;
                *direct = dp;
            }
            else {
                need_save = DAV_TRUE;

                /* Remove timed-out locknull fm .locknull list */
                if (*key.dptr == DAV_TYPE_FNAME) {
                    const char *fname = key.dptr + 1;
                    apr_finfo_t finfo;
                    apr_status_t rv;

                    /* if we don't see the file, then it's a locknull */
                    rv = apr_stat(&finfo, fname, APR_FINFO_MIN | APR_FINFO_LINK, p);
                    if (rv != APR_SUCCESS && rv != APR_INCOMPLETE) {
                        if ((err = dav_fs_remove_locknull_member(p, fname, &buf)) != NULL) {
                            /* ### push a higher-level description? */
                            return err;
                        }
                    }
                }
            }
            break;

        case DAV_LOCK_INDIRECT:
            /* Create and fill a dav_lock_indirect structure */

            ip = apr_pcalloc(p, sizeof(*ip));
            ip->locktoken = apr_pmemdup(p, val.dptr + offset, sizeof(*ip->locktoken));
            offset += sizeof(*ip->locktoken);
            memcpy(&ip->timeout, val.dptr + offset, sizeof(ip->timeout));
            offset += sizeof(ip->timeout);
            memcpy(&ip->key.dsize, val.dptr + offset, sizeof(ip->key.dsize)); /* length of datum */
            offset += sizeof(ip->key.dsize);
            ip->key.dptr = apr_pmemdup(p, val.dptr + offset, ip->key.dsize);
            offset += ip->key.dsize;

            if (!dav_fs_lock_expired(ip->timeout)) {
                ip->next = *indirect;
                *indirect = ip;
            }
            else {
                need_save = DAV_TRUE;
                /* A locknull resource will never be locked indirectly */
            }

            break;

        default:
            dav_dbm_freedatum(lockdb->info->db, val);

            /* ### should use a computed_desc and insert corrupt token data */
            --offset;
            return dav_new_error(p,
                                 HTTP_INTERNAL_SERVER_ERROR,
                                 DAV_ERR_LOCK_CORRUPT_DB, 0,
                                 apr_psprintf(p,
                                             "The lock database was found to "
                                             "be corrupt. offset %"
                                             APR_SIZE_T_FMT ", c=%02x",
                                             offset, val.dptr[offset]));
        }
    }

    dav_dbm_freedatum(lockdb->info->db, val);

    /* Clean up this record if we found expired locks */
    /*
    ** ### shouldn't do this if we've been opened READONLY. elide the
    ** ### timed-out locks from the response, but don't save that info back
    */
    if (need_save == DAV_TRUE) {
        return dav_fs_save_lock_record(lockdb, key, *direct, *indirect);
    }

    return NULL;
}
コード例 #4
0
ファイル: dbm.c プロジェクト: KunZheng/mosbench
static dav_error * dav_propdb_open(apr_pool_t *pool,
                                   const dav_resource *resource, int ro,
                                   dav_db **pdb)
{
    dav_db *db;
    dav_error *err;
    apr_datum_t key;
    apr_datum_t value = { 0 };

    *pdb = NULL;

    /*
    ** Return if an error occurred, or there is no database.
    **
    ** NOTE: db could be NULL if we attempted to open a readonly
    **       database that doesn't exist. If we require read/write
    **       access, then a database was created and opened.
    */
    if ((err = dav_dbm_open(pool, resource, ro, &db)) != NULL
        || db == NULL)
        return err;

    db->uri_index = apr_hash_make(pool);

    key.dptr = DAV_GDBM_NS_KEY;
    key.dsize = DAV_GDBM_NS_KEY_LEN;
    if ((err = dav_dbm_fetch(db, key, &value)) != NULL) {
        /* ### push a higher-level description? */
        return err;
    }

    if (value.dptr == NULL) {
        dav_propdb_metadata m = {
            DAV_DBVSN_MAJOR, DAV_DBVSN_MINOR, 0
        };

        /*
        ** If there is no METADATA key, then the database may be
        ** from versions 0.9.0 .. 0.9.4 (which would be incompatible).
        ** These can be identified by the presence of an NS_TABLE entry.
        */
        key.dptr = "NS_TABLE";
        key.dsize = 8;
        if (dav_dbm_exists(db, key)) {
            dav_dbm_close(db);

            /* call it a major version error */
            return dav_new_error(pool, HTTP_INTERNAL_SERVER_ERROR,
                                 DAV_ERR_PROP_BAD_MAJOR,
                                 "Prop database has the wrong major "
                                 "version number and cannot be used.");
        }

        /* initialize a new metadata structure */
        dav_set_bufsize(pool, &db->ns_table, sizeof(m));
        memcpy(db->ns_table.buf, &m, sizeof(m));
    }
    else {
        dav_propdb_metadata m;
        long ns;
        const char *uri;

        dav_set_bufsize(pool, &db->ns_table, value.dsize);
        memcpy(db->ns_table.buf, value.dptr, value.dsize);

        memcpy(&m, value.dptr, sizeof(m));
        if (m.major != DAV_DBVSN_MAJOR) {
            dav_dbm_close(db);

            return dav_new_error(pool, HTTP_INTERNAL_SERVER_ERROR,
                                 DAV_ERR_PROP_BAD_MAJOR,
                                 "Prop database has the wrong major "
                                 "version number and cannot be used.");
        }
        db->version = m.minor;
        db->ns_count = ntohs(m.ns_count);

        dav_dbm_freedatum(db, value);

        /* create db->uri_index */
        for (ns = 0, uri = db->ns_table.buf + sizeof(dav_propdb_metadata);
             ns++ < db->ns_count;
             uri += strlen(uri) + 1) {

            /* we must copy the key, in case ns_table.buf moves */
            apr_hash_set(db->uri_index,
                         apr_pstrdup(pool, uri), APR_HASH_KEY_STRING,
                         (void *)ns);
        }
    }

    *pdb = db;
    return NULL;
}