Git does not support the ability to replace a token with a version string during check-in. While it does have support for replacing a token on clone, this is somewhat sub-optimal: the token is replaced with the object hash, which is not particularly easy for human consumption. What's more, in practice, the source file version was often not terribly useful. Generally, when triaging bugs, the overall version of Asterisk is far more useful than an individual SVN version of a file. As a result, this patch removes Asterisk's support for showing source file versions. Specifically, it does the following: * Rename ASTERISK_FILE_VERSION macro to ASTERISK_REGISTER_FILE, and remove passing the version in with the macro. Other facilities than 'core show file version' make use of the file names, such as setting a debug level only on a specific file. As such, the act of registering source files with the Asterisk core still has use. The macro rename now reflects the new macro purpose. * main/asterisk: - Refactor the file_version structure to reflect that it no longer tracks a version field. - Remove the "core show file version" CLI command. Without the file version, it is no longer useful. - Remove the ast_file_version_find function. The file version is no longer tracked. - Rename ast_register_file_version/ast_unregister_file_version to ast_register_file/ast_unregister_file, respectively. * main/manager: Remove value from the Version key of the ModuleCheck Action. The actual key itself has not been removed, as doing so would absolutely constitute a backwards incompatible change. However, since the file version is no longer tracked, there is no need to attempt to include it in the Version key. * UPGRADE: Add notes for: - Modification to the ModuleCheck AMI Action - Removal of the "core show file version" CLI command Change-Id: I6cf0ff280e1668bf4957dc21f32a5ff43444a40e
187 lines
5.3 KiB
C
187 lines
5.3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2009, Digium, Inc.
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief AES encryption/decryption dialplan functions
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*
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* \author David Vossel <dvossel@digium.com>
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* \ingroup functions
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*/
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/*** MODULEINFO
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<use type="external">crypto</use>
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_REGISTER_FILE()
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#include "asterisk/module.h"
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#include "asterisk/pbx.h"
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#include "asterisk/app.h"
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#include "asterisk/crypto.h"
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#define AES_BLOCK_SIZE 16
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/*** DOCUMENTATION
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<function name="AES_ENCRYPT" language="en_US">
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<synopsis>
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Encrypt a string with AES given a 16 character key.
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</synopsis>
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<syntax>
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<parameter name="key" required="true">
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<para>AES Key</para>
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</parameter>
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<parameter name="string" required="true">
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<para>Input string</para>
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</parameter>
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</syntax>
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<description>
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<para>Returns an AES encrypted string encoded in base64.</para>
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</description>
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<see-also>
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<ref type="function">AES_DECRYPT</ref>
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<ref type="function">BASE64_ENCODE</ref>
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<ref type="function">BASE64_DECODE</ref>
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</see-also>
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</function>
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<function name="AES_DECRYPT" language="en_US">
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<synopsis>
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Decrypt a string encoded in base64 with AES given a 16 character key.
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</synopsis>
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<syntax>
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<parameter name="key" required="true">
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<para>AES Key</para>
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</parameter>
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<parameter name="string" required="true">
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<para>Input string.</para>
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</parameter>
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</syntax>
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<description>
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<para>Returns the plain text string.</para>
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</description>
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<see-also>
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<ref type="function">AES_ENCRYPT</ref>
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<ref type="function">BASE64_ENCODE</ref>
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<ref type="function">BASE64_DECODE</ref>
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</see-also>
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</function>
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***/
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static int aes_helper(struct ast_channel *chan, const char *cmd, char *data,
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char *buf, size_t len)
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{
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unsigned char curblock[AES_BLOCK_SIZE] = { 0, };
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char *tmp;
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char *tmpP;
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int data_len, encrypt;
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ast_aes_encrypt_key ecx; /* AES 128 Encryption context */
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ast_aes_decrypt_key dcx;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(key);
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AST_APP_ARG(data);
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);
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AST_STANDARD_APP_ARGS(args, data);
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if (ast_strlen_zero(args.data) || ast_strlen_zero(args.key)) {
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ast_log(LOG_WARNING, "Syntax: %s(<key>,<data>) - missing argument!\n", cmd);
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return -1;
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}
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if (strlen(args.key) != AES_BLOCK_SIZE) { /* key must be of 16 characters in length, 128 bits */
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ast_log(LOG_WARNING, "Syntax: %s(<key>,<data>) - <key> parameter must be exactly 16 characters!\n", cmd);
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return -1;
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}
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ast_aes_set_encrypt_key((unsigned char *) args.key, &ecx); /* encryption: plaintext -> encryptedtext -> base64 */
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ast_aes_set_decrypt_key((unsigned char *) args.key, &dcx); /* decryption: base64 -> encryptedtext -> plaintext */
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tmp = ast_calloc(1, len); /* requires a tmp buffer for the base64 decode */
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if (!tmp) {
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ast_log(LOG_ERROR, "Unable to allocate memory for data\n");
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return -1;
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}
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tmpP = tmp;
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encrypt = strcmp("AES_DECRYPT", cmd); /* -1 if encrypting, 0 if decrypting */
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if (encrypt) { /* if decrypting first decode src to base64 */
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ast_copy_string(tmp, args.data, len);
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data_len = strlen(tmp);
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} else {
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data_len = ast_base64decode((unsigned char *) tmp, args.data, len);
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}
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if (data_len >= len) { /* make sure to not go over buffer len */
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ast_log(LOG_WARNING, "Syntax: %s(<keys>,<data>) - <data> exceeds buffer length. Result may be truncated!\n", cmd);
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data_len = len - 1;
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}
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while (data_len > 0) {
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memset(curblock, 0, AES_BLOCK_SIZE);
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memcpy(curblock, tmpP, (data_len < AES_BLOCK_SIZE) ? data_len : AES_BLOCK_SIZE);
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if (encrypt) {
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ast_aes_encrypt(curblock, (unsigned char *) tmpP, &ecx);
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} else {
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ast_aes_decrypt(curblock, (unsigned char *) tmpP, &dcx);
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}
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tmpP += AES_BLOCK_SIZE;
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data_len -= AES_BLOCK_SIZE;
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}
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if (encrypt) { /* if encrypting encode result to base64 */
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ast_base64encode(buf, (unsigned char *) tmp, strlen(tmp), len);
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} else {
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memcpy(buf, tmp, len);
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}
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ast_free(tmp);
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return 0;
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}
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static struct ast_custom_function aes_encrypt_function = {
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.name = "AES_ENCRYPT",
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.read = aes_helper,
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};
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static struct ast_custom_function aes_decrypt_function = {
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.name = "AES_DECRYPT",
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.read = aes_helper,
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};
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static int unload_module(void)
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{
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int res = ast_custom_function_unregister(&aes_decrypt_function);
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return res | ast_custom_function_unregister(&aes_encrypt_function);
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}
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static int load_module(void)
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{
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int res = ast_custom_function_register(&aes_decrypt_function);
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res |= ast_custom_function_register(&aes_encrypt_function);
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return res ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "AES dialplan functions",
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.support_level = AST_MODULE_SUPPORT_CORE,
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.load = load_module,
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.unload = unload_module,
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.nonoptreq = "res_crypto",
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);
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