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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 06:23:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 06:23:09 +0000 |
commit | 30d479c28c831a0d4f1fdb54a9e346b0fc176be1 (patch) | |
tree | aa35d7414ce9f1326abf6f723f6dfa5b0aa08b1d /misc/win32/internal.c | |
parent | Initial commit. (diff) | |
download | apr-upstream.tar.xz apr-upstream.zip |
Adding upstream version 1.7.2.upstream/1.7.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'misc/win32/internal.c')
-rw-r--r-- | misc/win32/internal.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/misc/win32/internal.c b/misc/win32/internal.c new file mode 100644 index 0000000..03362cf --- /dev/null +++ b/misc/win32/internal.c @@ -0,0 +1,101 @@ +/* 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_arch_misc.h" +#include "apr_arch_file_io.h" +#include <assert.h> + +/* This module is the source of -static- helper functions that are + * entirely internal to apr. If the fn is exported - it does not + * belong here. + * + * Namespace decoration is still required to protect us from symbol + * clashes in static linkages. + */ + + +/* Shared by apr_app.c and start.c + * + * An internal apr function to convert an array of strings (either + * a counted or NULL terminated list, such as an argv[argc] or env[] + * list respectively) from wide Unicode strings to narrow utf-8 strings. + * These are allocated from the MSVCRT's _CRT_BLOCK to trick the system + * into trusting our store. + */ +int apr_wastrtoastr(char const * const * *retarr, + wchar_t const * const *arr, int args) +{ + apr_size_t elesize = 0; + char **newarr; + char *elements; + char *ele; + int arg; + + if (args < 0) { + for (args = 0; arr[args]; ++args) + ; + } + + newarr = apr_malloc_dbg((args + 1) * sizeof(char *), + __FILE__, __LINE__); + + for (arg = 0; arg < args; ++arg) { + newarr[arg] = (void*)(wcslen(arr[arg]) + 1); + elesize += (apr_size_t)newarr[arg]; + } + + /* This is a safe max allocation, we will realloc after + * processing and return the excess to the free store. + * 3 ucs bytes hold any single wchar_t value (16 bits) + * 4 ucs bytes will hold a wchar_t pair value (20 bits) + */ + elesize = elesize * 3 + 1; + ele = elements = apr_malloc_dbg(elesize * sizeof(char), + __FILE__, __LINE__); + + for (arg = 0; arg < args; ++arg) { + apr_size_t len = (apr_size_t)newarr[arg]; + apr_size_t newlen = elesize; + + newarr[arg] = ele; + (void)apr_conv_ucs2_to_utf8(arr[arg], &len, + newarr[arg], &elesize); + + newlen -= elesize; + ele += newlen; + assert(elesize && (len == 0)); + } + + newarr[arg] = NULL; + *(ele++) = '\0'; + + /* Return to the free store if the heap realloc is the least bit optimized + */ + ele = apr_realloc_dbg(elements, ele - elements, + __FILE__, __LINE__); + + if (ele != elements) { + apr_size_t diff = ele - elements; + for (arg = 0; arg < args; ++arg) { + newarr[arg] += diff; + } + } + + *retarr = (char const * const *)newarr; + return args; +} |