Function dav_lock_get_activelock

modules/dav/main/util_lock.c:42–163

** dav_lock_get_activelock: Returns a containing ** an activelock element for every item in the lock_discovery tree */

**    an activelock element for every item in the lock_discovery tree
*/
DAV_DECLARE(const char *) dav_lock_get_activelock(request_rec *r,
                                                  dav_lock *lock,
                                                  dav_buffer *pbuf)
{
    dav_lock *lock_scan;
    const dav_hooks_locks *hooks = DAV_GET_HOOKS_LOCKS(r);
    int count = 0;
    dav_buffer work_buf = { 0 };
    apr_pool_t *p = r->pool;

    /* If no locks or no lock provider, there are no locks */
    if (lock == NULL || hooks == NULL) {
        /*
        ** Since resourcediscovery is defined with (activelock)*,
        ** <D:activelock/> shouldn't be necessary for an empty lock.
        */
        return "";
    }

    /*
    ** Note: it could be interesting to sum the lengths of the owners
    **       and locktokens during this loop. However, the buffer
    **       mechanism provides some rough padding so that we don't
    **       really need to have an exact size. Further, constructing
    **       locktoken strings could be relatively expensive.
    */
    for (lock_scan = lock; lock_scan != NULL; lock_scan = lock_scan->next)
        count++;

    /* if a buffer was not provided, then use an internal buffer */
    if (pbuf == NULL)
        pbuf = &work_buf;

    /* reset the length before we start appending stuff */
    pbuf->cur_len = 0;

    /* prep the buffer with a "good" size */
    dav_check_bufsize(p, pbuf, count * 300);

    for (; lock != NULL; lock = lock->next) {
        char tmp[100];

#if DAV_DEBUG
        if (lock->rectype == DAV_LOCKREC_INDIRECT_PARTIAL) {
            /* ### crap. design error */
            dav_buffer_append(p, pbuf,
                              "DESIGN ERROR: attempted to product an "
                              "activelock element from a partial, indirect "
                              "lock record. Creating an XML parsing error "
                              "to ease detection of this situation: <");
        }
#endif

        dav_buffer_append(p, pbuf, "<D:activelock>" DEBUG_CR "<D:locktype>");
        switch (lock->type) {
        case DAV_LOCKTYPE_WRITE:
            dav_buffer_append(p, pbuf, "<D:write/>");
            break;