Function dav_fs_load_lock_record

modules/dav/fs/lock.c:521–661

** 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? */

**    ### 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;
            }