Tomcat example source code file (file.c)

This example Tomcat source code file (file.c) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Tomcat tags/keywords

apr_success, file, file, j2p, j2p, jni_abort, null, tcn_alloc_cstring, tcn_free_cstring, tcn_implement_call, tcn_implement_call, unreferenced, unreferenced, unreferenced_stdargs

The Tomcat file.c source code

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 *
 * @author Mladen Turk
 * @version $Revision: 466585 $, $Date: 2006-10-22 00:16:34 +0200 (dim., 22 oct. 2006) $
 */
 
#include "tcn.h"
#include "apr_file_io.h"


TCN_IMPLEMENT_CALL(jint, File, close)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_close(f);
}

TCN_IMPLEMENT_CALL(jint, File, eof)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_eof(f);
}

TCN_IMPLEMENT_CALL(jint, File, flush)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_flush(f);
}

TCN_IMPLEMENT_CALL(jint, File, unlock)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_unlock(f);
}

TCN_IMPLEMENT_CALL(jint, File, flagsGet)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_flags_get(f);
}

TCN_IMPLEMENT_CALL(jint, File, lock)(TCN_STDARGS, jlong file, jint flags)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_lock(f, (int)flags);
}

TCN_IMPLEMENT_CALL(jint, File, trunc)(TCN_STDARGS, jlong file, jlong off)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_trunc(f, (apr_off_t)off);
}

TCN_IMPLEMENT_CALL(jlong, File, open)(TCN_STDARGS, jstring fname,
                                      jint flag, jint perm,
                                      jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    apr_file_t *f = NULL;
    TCN_ALLOC_CSTRING(fname);

    UNREFERENCED(o);
    TCN_THROW_IF_ERR(apr_file_open(&f, J2S(fname), (apr_int32_t)flag,
                     (apr_fileperms_t)perm, p), f);

cleanup:
    TCN_FREE_CSTRING(fname);
    return P2J(f);
}

TCN_IMPLEMENT_CALL(jlong, File, mktemp)(TCN_STDARGS, jstring templ,
                                      jint flags,
                                      jint pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    apr_file_t *f = NULL;
    char *ctempl = tcn_strdup(e, templ);

    UNREFERENCED(o);
    if (!ctempl) {
       TCN_THROW_OS_ERROR(e);
       return 0;
    }
    TCN_THROW_IF_ERR(apr_file_mktemp(&f, ctempl,
                     (apr_int32_t)flags, p), f);

cleanup:
    free(ctempl);
    return P2J(f);
}

TCN_IMPLEMENT_CALL(jint, File, remove)(TCN_STDARGS, jstring path, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    TCN_ALLOC_CSTRING(path);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_remove(J2S(path), p);
    TCN_FREE_CSTRING(path);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, rename)(TCN_STDARGS, jstring from,
                                       jstring to, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    TCN_ALLOC_CSTRING(from);
    TCN_ALLOC_CSTRING(to);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_rename(J2S(from), J2S(to), p);
    TCN_FREE_CSTRING(from);
    TCN_FREE_CSTRING(to);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, copy)(TCN_STDARGS, jstring from,
                                     jstring to, jint perms, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    TCN_ALLOC_CSTRING(from);
    TCN_ALLOC_CSTRING(to);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_copy(J2S(from), J2S(to), (apr_fileperms_t)perms, p);
    TCN_FREE_CSTRING(from);
    TCN_FREE_CSTRING(to);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, append)(TCN_STDARGS, jstring from,
                                       jstring to, jint perms, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    TCN_ALLOC_CSTRING(from);
    TCN_ALLOC_CSTRING(to);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_append(J2S(from), J2S(to), (apr_fileperms_t)perms, p);
    TCN_FREE_CSTRING(from);
    TCN_FREE_CSTRING(to);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jstring, File, nameGet)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    jstring name = NULL;
    const char *fname;

    UNREFERENCED(o);
    if (apr_file_name_get(&fname, f) == APR_SUCCESS)
        name = AJP_TO_JSTRING(fname);

    return name;
}

TCN_IMPLEMENT_CALL(jint, File, permsSet)(TCN_STDARGS, jstring file, jint perms)
{
    TCN_ALLOC_CSTRING(file);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_perms_set(J2S(file), (apr_fileperms_t)perms);
    TCN_FREE_CSTRING(file);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, attrsSet)(TCN_STDARGS, jstring file, jint attrs,
                                          jint mask, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    TCN_ALLOC_CSTRING(file);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_attrs_set(J2S(file), (apr_fileattrs_t)attrs,
                            (apr_fileattrs_t)mask, p);
    TCN_FREE_CSTRING(file);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, mtimeSet)(TCN_STDARGS, jstring file, jlong mtime,
                                          jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    TCN_ALLOC_CSTRING(file);
    apr_status_t rv;

    UNREFERENCED(o);
    rv = apr_file_mtime_set(J2S(file), J2T(mtime), p);
    TCN_FREE_CSTRING(file);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jlong, File, seek)(TCN_STDARGS, jlong file,
                                      jint where, jlong offset)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_off_t pos = (apr_off_t)offset;
    apr_seek_where_t w;
    UNREFERENCED(o);
    switch (where) {
        case 1:
            w = APR_CUR;
            break;
        case 2:
            w = APR_END;
            break;
        default:
            w = APR_SET;
            break;
    }
    TCN_THROW_IF_ERR(apr_file_seek(f, w, &pos), pos);

cleanup:
    return (jlong)pos;
}

TCN_IMPLEMENT_CALL(jint, File, putc)(TCN_STDARGS, jbyte c, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_putc((char)c, f);
}

TCN_IMPLEMENT_CALL(jint, File, getc)(TCN_STDARGS, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    char ch;

    UNREFERENCED_STDARGS;
    TCN_THROW_IF_ERR(apr_file_getc(&ch, f), ch);

cleanup:
    return (jint)ch;
}

TCN_IMPLEMENT_CALL(jint, File, ungetc)(TCN_STDARGS, jbyte c, jlong file)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_ungetc((char)c, f);
}

TCN_IMPLEMENT_CALL(jint, File, puts)(TCN_STDARGS, jbyteArray str, jlong file)
{
    apr_status_t rv = APR_EINVAL;
    apr_file_t *f = J2P(file, apr_file_t *);
    jbyte *bytes = (*e)->GetPrimitiveArrayCritical(e, str, NULL);

    UNREFERENCED(o);
    if (bytes) {
        rv = apr_file_puts((const char *)bytes, f);
        (*e)->ReleasePrimitiveArrayCritical(e, str, bytes, JNI_ABORT);
    }
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, write)(TCN_STDARGS, jlong file,
                                      jbyteArray buf, jint offset, jint towrite)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)towrite;
    jbyte *bytes = (*e)->GetPrimitiveArrayCritical(e, buf, NULL);
    apr_status_t ss;

    UNREFERENCED(o);
    if (towrite < 0)
        towrite = (*e)->GetArrayLength(e, buf);
    ss = apr_file_write(f, bytes + offset, &nbytes);

    (*e)->ReleasePrimitiveArrayCritical(e, buf, bytes, JNI_ABORT);
    if (ss == APR_SUCCESS)
        return (jint)nbytes;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, writeb)(TCN_STDARGS, jlong file,
                                       jobject buf, jint offset, jint towrite)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)towrite;
    char *bytes = (char *)(*e)->GetDirectBufferAddress(e, buf);
    apr_status_t ss = APR_EINVAL;

    UNREFERENCED(o);
    if (bytes)
        ss = apr_file_write(f, bytes + offset, &nbytes);

    if (ss == APR_SUCCESS)
        return (jint)nbytes;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, writeFull)(TCN_STDARGS, jlong file,
                                          jbyteArray buf, jint offset, jint towrite)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)towrite;
    apr_size_t written = 0;
    apr_status_t ss;
    jbyte *bytes = (*e)->GetByteArrayElements(e, buf, NULL);

    UNREFERENCED(o);
    if (towrite < 0)
        towrite = (*e)->GetArrayLength(e, buf);
    ss = apr_file_write_full(f, bytes + offset, nbytes, &written);

    (*e)->ReleaseByteArrayElements(e, buf, bytes, JNI_ABORT);
    if (ss == APR_SUCCESS)
        return (jint)written;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, writeFullb)(TCN_STDARGS, jlong file,
                                           jobject buf, jint offset, jint towrite)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)towrite;
    apr_size_t written = 0;
    apr_status_t ss = APR_EINVAL;
    char *bytes = (char *)(*e)->GetDirectBufferAddress(e, buf);

    UNREFERENCED(o);
    if (bytes)
        ss = apr_file_write_full(f, bytes + offset, nbytes, &written);

    if (ss == APR_SUCCESS)
        return (jint)written;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, writev)(TCN_STDARGS, jlong file,
                                       jobjectArray bufs)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    jsize nvec = (*e)->GetArrayLength(e, bufs);
    jsize i;
    struct iovec vec[APR_MAX_IOVEC_SIZE];
    jobject ba[APR_MAX_IOVEC_SIZE];
    apr_size_t written = 0;
    apr_status_t ss;

    UNREFERENCED(o);

    if (nvec >= APR_MAX_IOVEC_SIZE) {
        /* TODO: Throw something here */
        return 0;
    }
    for (i = 0; i < nvec; i++) {
        ba[i] = (*e)->GetObjectArrayElement(e, bufs, i);
        vec[i].iov_len  = (*e)->GetArrayLength(e, ba[i]);
        vec[i].iov_base = (*e)->GetByteArrayElements(e, ba[i], NULL);
    }

    ss = apr_file_writev(f, vec, nvec, &written);

    for (i = 0; i < nvec; i++) {
        (*e)->ReleaseByteArrayElements(e, ba[i], vec[i].iov_base, JNI_ABORT);
    }
    if (ss == APR_SUCCESS)
        return (jint)written;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, writevFull)(TCN_STDARGS, jlong file,
                                           jobjectArray bufs)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    jsize nvec = (*e)->GetArrayLength(e, bufs);
    jsize i;
    struct iovec vec[APR_MAX_IOVEC_SIZE];
    jobject ba[APR_MAX_IOVEC_SIZE];
    apr_size_t written = 0;
    apr_status_t ss;

    UNREFERENCED(o);

    if (nvec >= APR_MAX_IOVEC_SIZE) {
        /* TODO: Throw something here */
        return 0;
    }
    for (i = 0; i < nvec; i++) {
        ba[i] = (*e)->GetObjectArrayElement(e, bufs, i);
        vec[i].iov_len  = (*e)->GetArrayLength(e, ba[i]);
        vec[i].iov_base = (*e)->GetByteArrayElements(e, ba[i], NULL);
    }
#if (APR_VERSION_MAJOR >= 1) && (APR_VERSION_MINOR >= 1)
    ss = apr_file_writev_full(f, vec, nvec, &written);
#else
    ss = apr_file_writev(f, vec, nvec, &written);
#endif

    for (i = 0; i < nvec; i++) {
        (*e)->ReleaseByteArrayElements(e, ba[i], vec[i].iov_base,
                                       JNI_ABORT);
    }
    if (ss == APR_SUCCESS)
        return (jint)written;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, read)(TCN_STDARGS, jlong file,
                                     jbyteArray buf, jint offset,
                                     jint toread)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)toread;
    jbyte *bytes = (*e)->GetByteArrayElements(e, buf, NULL);
    apr_status_t ss;

    UNREFERENCED(o);
    ss = apr_file_read(f, bytes + offset, &nbytes);

    (*e)->ReleaseByteArrayElements(e, buf, bytes,
                                   ss == APR_SUCCESS ? 0 : JNI_ABORT);
    if (ss == APR_SUCCESS)
        return (jint)nbytes;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, readb)(TCN_STDARGS, jlong file,
                                      jobject buf, jint offset,
                                      jint toread)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)toread;
    char *bytes = (char *)(*e)->GetDirectBufferAddress(e, buf);
    apr_status_t ss = APR_EINVAL;

    UNREFERENCED(o);
    if (bytes)
        ss = apr_file_read(f, bytes + offset, &nbytes);

    if (ss == APR_SUCCESS)
        return (jint)nbytes;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, readFull)(TCN_STDARGS, jlong file,
                                         jbyteArray buf, jint offset,
                                         jint toread)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)toread;
    apr_size_t nread  = 0;
    apr_status_t ss;
    jbyte *bytes = (*e)->GetByteArrayElements(e, buf, NULL);

    UNREFERENCED(o);
    ss = apr_file_read_full(f, bytes + offset, nbytes, &nread);

    (*e)->ReleaseByteArrayElements(e, buf, bytes,
                                   ss == APR_SUCCESS ? 0 : JNI_ABORT);
    if (ss == APR_SUCCESS)
        return (jint)nread;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, readFullb)(TCN_STDARGS, jlong file,
                                          jobject buf, jint offset,
                                          jint toread)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_size_t nbytes = (apr_size_t)toread;
    apr_size_t nread  = 0;
    char *bytes = (char *)(*e)->GetDirectBufferAddress(e, buf);
    apr_status_t ss = APR_EINVAL;

    UNREFERENCED(o);
    if (bytes)
        ss = apr_file_read_full(f, bytes + offset, nbytes, &nread);

    if (ss == APR_SUCCESS)
        return (jint)nread;
    else
        return -(jint)ss;
}

TCN_IMPLEMENT_CALL(jint, File, gets)(TCN_STDARGS, jbyteArray buf, jint offset,
                                     jlong file)
{
    apr_status_t rv;
    apr_file_t *f = J2P(file, apr_file_t *);
    jsize nbytes = (*e)->GetArrayLength(e, buf);
    jbyte *bytes = (*e)->GetByteArrayElements(e, buf, NULL);

    UNREFERENCED(o);
    rv = apr_file_gets((char*)(bytes + offset),nbytes - offset, f);
    (*e)->ReleaseByteArrayElements(e, buf, bytes,
                                   rv == APR_SUCCESS ? 0 : JNI_ABORT);
    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, pipeCreate)(TCN_STDARGS, jlongArray io, jlong pool)
{
    apr_status_t rv;
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    jsize npipes = (*e)->GetArrayLength(e, io);
    jlong *pipes = (*e)->GetLongArrayElements(e, io, NULL);
    apr_file_t *in;
    apr_file_t *out;

    UNREFERENCED(o);
    if (npipes < 2) {
        (*e)->ReleaseLongArrayElements(e, io, pipes, JNI_ABORT);
        return APR_EINVAL;
    }

    rv = apr_file_pipe_create(&in, &out, p);
    if (rv == APR_SUCCESS) {
        pipes[0] = P2J(in);
        pipes[1] = P2J(out);
        (*e)->ReleaseLongArrayElements(e, io, pipes, 0);
    }
    else
        (*e)->ReleaseLongArrayElements(e, io, pipes, JNI_ABORT);

    return (jint)rv;
}

TCN_IMPLEMENT_CALL(jint, File, pipeTimeoutSet)(TCN_STDARGS, jlong pipe,
                                               jlong timeout)
{
    apr_file_t *f = J2P(pipe, apr_file_t *);
    UNREFERENCED_STDARGS;
    return (jint)apr_file_pipe_timeout_set(f, J2T(timeout));
}

TCN_IMPLEMENT_CALL(jlong, File, pipeTimeoutGet)(TCN_STDARGS, jlong pipe)
{
    apr_file_t *f = J2P(pipe, apr_file_t *);
    apr_interval_time_t timeout;

    UNREFERENCED(o);
    TCN_THROW_IF_ERR(apr_file_pipe_timeout_get(f, &timeout), timeout);

cleanup:
    return (jlong)timeout;
}

TCN_IMPLEMENT_CALL(jlong, File, dup)(TCN_STDARGS, jlong newf, jlong file,
                                     jlong pool)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    apr_file_t *d = J2P(newf, apr_file_t *);

    UNREFERENCED(o);
    TCN_THROW_IF_ERR(apr_file_dup(&d, f, p), d);

cleanup:
    return P2J(d);
}

TCN_IMPLEMENT_CALL(jint, File, dup2)(TCN_STDARGS, jlong newf, jlong file,
                                     jlong pool)
{
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    apr_file_t *d = J2P(newf, apr_file_t *);

    UNREFERENCED_STDARGS;
    return (jint)apr_file_dup2(d, f, p);
}