Adding upstream version 2.4.38.upstream/2.4.38upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 178 insertions, 0 deletions

diff --git a/modules/lua/lua_passwd.c b/modules/lua/lua_passwd.c
new file mode 100644
index 0000000..ad86536
--- /dev/null
+++ b/modules/lua/lua_passwd.c
@@ -0,0 +1,178 @@
+/* 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 "lua_passwd.h"
+#include "apr_strings.h"
+#include "apr_errno.h"
+
+#if APR_HAVE_STDIO_H
+#include <stdio.h>
+#endif
+
+#include "apr_md5.h"
+#include "apr_sha1.h"
+
+#if APR_HAVE_TIME_H
+#include <time.h>
+#endif
+#if APR_HAVE_CRYPT_H
+#include <crypt.h>
+#endif
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#if APR_HAVE_STRING_H
+#include <string.h>
+#endif
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_IO_H
+#include <io.h>
+#endif
+
+static int generate_salt(char *s, size_t size, const char **errstr,
+                         apr_pool_t *pool)
+{
+    unsigned char rnd[32];
+    static const char itoa64[] =
+        "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    apr_size_t n;
+    unsigned int val = 0, bits = 0;
+    apr_status_t rv;
+
+    n = (size * 6 + 7)/8;
+    if (n > sizeof(rnd)) {
+        *errstr = apr_psprintf(pool, "generate_salt(): BUG: Buffer too small");
+        return ERR_RANDOM;
+    }
+    rv = apr_generate_random_bytes(rnd, n);
+    if (rv) {
+        *errstr = apr_psprintf(pool, "Unable to generate random bytes: %pm",
+                               &rv);
+        return ERR_RANDOM;
+    }
+    n = 0;
+    while (size > 0) {
+        if (bits < 6) {
+            val |= (rnd[n++] << bits);
+            bits += 8;
+        }
+        *s++ = itoa64[val & 0x3f];
+        size--;
+        val >>= 6;
+        bits -= 6;
+   }
+   *s = '\0';
+   return 0;
+}
+
+/*
+ * Make a password record from the given information.  A zero return
+ * indicates success; on failure, ctx->errstr points to the error message.
+ */
+int mk_password_hash(passwd_ctx *ctx)
+{
+    char *pw;
+    char salt[16];
+    apr_status_t rv;
+    int ret = 0;
+#if CRYPT_ALGO_SUPPORTED
+    char *cbuf;
+#endif
+
+    pw = ctx->passwd;
+    switch (ctx->alg) {
+    case ALG_APSHA:
+        /* XXX out >= 28 + strlen(sha1) chars - fixed len SHA */
+        apr_sha1_base64(pw, strlen(pw), ctx->out);
+        break;
+
+    case ALG_APMD5:
+        ret = generate_salt(salt, 8, &ctx->errstr, ctx->pool);
+        if (ret != 0) {
+            ret = ERR_GENERAL;
+            break;
+        }
+        rv = apr_md5_encode(pw, salt, ctx->out, ctx->out_len);
+        if (rv != APR_SUCCESS) {
+            ctx->errstr = apr_psprintf(ctx->pool,
+                                       "could not encode password: %pm", &rv);
+            ret = ERR_GENERAL;
+        }
+        break;
+
+#if CRYPT_ALGO_SUPPORTED
+    case ALG_CRYPT:
+        ret = generate_salt(salt, 8, &ctx->errstr, ctx->pool);
+        if (ret != 0)
+            break;
+        cbuf = crypt(pw, salt);
+        if (cbuf == NULL) {
+            rv = APR_FROM_OS_ERROR(errno);
+            ctx->errstr = apr_psprintf(ctx->pool, "crypt() failed: %pm", &rv);
+            ret = ERR_PWMISMATCH;
+            break;
+        }
+
+        apr_cpystrn(ctx->out, cbuf, ctx->out_len - 1);
+        if (strlen(pw) > 8) {
+            char *truncpw = apr_pstrdup(ctx->pool, pw);
+            truncpw[8] = '\0';
+            if (!strcmp(ctx->out, crypt(truncpw, salt))) {
+                ctx->errstr = apr_psprintf(ctx->pool,
+                                           "Warning: Password truncated to 8 "
+                                           "characters by CRYPT algorithm.");
+            }
+            memset(truncpw, '\0', strlen(pw));
+        }
+        break;
+#endif /* CRYPT_ALGO_SUPPORTED */
+
+#if BCRYPT_ALGO_SUPPORTED
+    case ALG_BCRYPT:
+        rv = apr_generate_random_bytes((unsigned char*)salt, 16);
+        if (rv != APR_SUCCESS) {
+            ctx->errstr = apr_psprintf(ctx->pool, "Unable to generate random "
+                                       "bytes: %pm", &rv);
+            ret = ERR_RANDOM;
+            break;
+        }
+
+        if (ctx->cost == 0)
+            ctx->cost = BCRYPT_DEFAULT_COST;
+        rv = apr_bcrypt_encode(pw, ctx->cost, (unsigned char*)salt, 16,
+                               ctx->out, ctx->out_len);
+        if (rv != APR_SUCCESS) {
+            ctx->errstr = apr_psprintf(ctx->pool, "Unable to encode with "
+                                       "bcrypt: %pm", &rv);
+            ret = ERR_PWMISMATCH;
+            break;
+        }
+        break;
+#endif /* BCRYPT_ALGO_SUPPORTED */
+
+    default:
+        ctx->errstr = apr_psprintf(ctx->pool,
+                                  "mk_password_hash(): unsupported algorithm %d",
+                                  ctx->alg);
+        ret = ERR_GENERAL;
+    }
+    memset(pw, '\0', strlen(pw));
+    return ret;
+}
+
+