Function cgi_read_stdout

modules/generators/cgi_common.h:310–344

Handle stdout from CGI child. Duplicate of logic from the _read * method of the real APR pipe bucket implementation. */

/* Handle stdout from CGI child.  Duplicate of logic from the _read
 * method of the real APR pipe bucket implementation. */
static apr_status_t cgi_read_stdout(apr_bucket *a, apr_file_t *out,
                                    const char **str, apr_size_t *len)
{
    char *buf;
    apr_status_t rv;

    *str = NULL;
    *len = APR_BUCKET_BUFF_SIZE;
    buf = apr_bucket_alloc(*len, a->list); /* XXX: check for failure? */

    rv = apr_file_read(out, buf, len);

    if (rv != APR_SUCCESS && rv != APR_EOF) {
        apr_bucket_free(buf);
        return rv;
    }

    if (*len > 0) {
        struct cgi_bucket_data *data = a->data;
        apr_bucket_heap *h;

        /* Change the current bucket to refer to what we read */
        a = apr_bucket_heap_make(a, buf, *len, apr_bucket_free);
        h = a->data;
        h->alloc_len = APR_BUCKET_BUFF_SIZE; /* note the real buffer size */
        *str = buf;
        APR_BUCKET_INSERT_AFTER(a, cgi_bucket_dup(data, a->list));
    }
    else {
        apr_bucket_free(buf);
        a = apr_bucket_immortal_make(a, "", 0);
        *str = a->data;
    }
    return rv;
}

/* Read method of CGI bucket: polls on stderr and stdout of the child,
 * sending any stderr output immediately away to the error log. */