upload http

[bottlenecks.git] / rubbos / app / httpd-2.0.64 / srclib / apr / file_io / unix / tempdir.c

diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/file_io/unix/tempdir.c b/rubbos/app/httpd-2.0.64/srclib/apr/file_io/unix/tempdir.c
new file mode 100644 (file)
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+++ b/rubbos/app/httpd-2.0.64/srclib/apr/file_io/unix/tempdir.c
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+/* 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.
+ */
+#include "apr_private.h"
+#include "apr_file_io.h"
+#include "apr_strings.h"
+#include "apr_env.h"
+
+/*
+ * FIXME
+ * Currently, this variable is a bit of misnomer.
+ * The intention is to have this in APR's global pool so that we don't have 
+ * to go through this every time.
+ */
+static char global_temp_dir[APR_PATH_MAX+1] = { 0 };
+
+/* Try to open a temporary file in the temporary dir, write to it,
+   and then close it. */
+static int test_tempdir(const char *temp_dir, apr_pool_t *p)
+{
+    apr_file_t *dummy_file;
+    const char *path = apr_pstrcat(p, temp_dir, "/apr-tmp.XXXXXX", NULL);
+
+    if (apr_file_mktemp(&dummy_file, (char *)path, 0, p) == APR_SUCCESS) {
+        if (apr_file_putc('!', dummy_file) == APR_SUCCESS) {
+            if (apr_file_close(dummy_file) == APR_SUCCESS) {
+                return 1;
+            }
+        }
+    }
+    return 0;
+}
+
+
+APR_DECLARE(apr_status_t) apr_temp_dir_get(const char **temp_dir, 
+                                           apr_pool_t *p)
+{
+    apr_status_t apr_err;
+    const char *try_dirs[] = { "/tmp", "/usr/tmp", "/var/tmp" };
+    const char *try_envs[] = { "TMP", "TEMP", "TMPDIR" };
+    char *cwd;
+    int i;
+
+    /* Our goal is to find a temporary directory suitable for writing
+       into.  We'll only pay the price once if we're successful -- we
+       cache our successful find.  Here's the order in which we'll try
+       various paths:
+
+          $TMP
+          $TEMP
+          $TMPDIR
+          "C:\TEMP"     (windows only)
+          "SYS:\TMP"    (netware only)
+          "/tmp"
+          "/var/tmp"
+          "/usr/tmp"
+          P_tmpdir      (POSIX define)
+          `pwd` 
+
+       NOTE: This algorithm is basically the same one used by Python
+       2.2's tempfile.py module.  */
+
+    /* Try the environment first. */
+    for (i = 0; i < (sizeof(try_envs) / sizeof(const char *)); i++) {
+        char *value;
+        apr_err = apr_env_get(&value, try_envs[i], p);
+        if ((apr_err == APR_SUCCESS) && value) {
+            apr_size_t len = strlen(value);
+            if (len && (len < APR_PATH_MAX) && test_tempdir(value, p)) {
+                memcpy(global_temp_dir, value, len + 1);
+                goto end;
+            }
+        }
+    }
+
+#ifdef WIN32
+    /* Next, on Win32, try the C:\TEMP directory. */
+    if (test_tempdir("C:\\TEMP", p)) {
+        memcpy(global_temp_dir, "C:\\TEMP", 7 + 1);
+        goto end;
+    }
+#endif
+#ifdef NETWARE
+    /* Next, on NetWare, try the SYS:/TMP directory. */
+    if (test_tempdir("SYS:/TMP", p)) {
+        memcpy(global_temp_dir, "SYS:/TMP", 8 + 1);
+        goto end;
+    }
+#endif
+
+    /* Next, try a set of hard-coded paths. */
+    for (i = 0; i < (sizeof(try_dirs) / sizeof(const char *)); i++) {
+        if (test_tempdir(try_dirs[i], p)) {
+            memcpy(global_temp_dir, try_dirs[i], strlen(try_dirs[i]) + 1);
+            goto end;
+        }
+    }
+
+#ifdef P_tmpdir
+    /* 
+     * If we have it, use the POSIX definition of where 
+     * the tmpdir should be 
+     */
+    if (test_tempdir(P_tmpdir, p)) {
+        memcpy(global_temp_dir, P_tmpdir, strlen(P_tmpdir) +1);
+        goto end;
+    }
+#endif
+    
+    /* Finally, try the current working directory. */
+    if (APR_SUCCESS == apr_filepath_get(&cwd, APR_FILEPATH_NATIVE, p)) {
+        if (test_tempdir(cwd, p)) {
+            memcpy(global_temp_dir, cwd, strlen(cwd) + 1);
+            goto end;
+        }
+    }
+
+end:
+    if (global_temp_dir[0]) {
+        *temp_dir = apr_pstrdup(p, global_temp_dir);
+        return APR_SUCCESS;
+    }
+    return APR_EGENERAL;
+}