| /* SPDX-License-Identifier: BSD-2-Clause */ |
| /* |
| * Copyright (c) 2018, Intel Corporation |
| * All rights reserved. |
| */ |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <inttypes.h> |
| #include <stdbool.h> |
| #include <string.h> |
| |
| #include "tss2_tpm2_types.h" |
| |
| #include "util/key-value-parse.h" |
| #define LOGMODULE tcti |
| #include "util/log.h" |
| |
| /* |
| * Parse the provided string containing a key / value pair separated by the |
| * '=' character. |
| * NOTE: The 'kv_str' parameter is not 'const' and this function will modify |
| * it as part of the parsing process. The key_value structure will be updated |
| * with references pointing to the appropriate location in the key_value_str |
| * parameter. |
| */ |
| bool |
| parse_key_value (char *key_value_str, |
| key_value_t *key_value) |
| { |
| const char *delim = "="; |
| char *tok, *state; |
| |
| LOG_TRACE ("key_value_str: \"%s\" and key_value_t: 0x%" PRIxPTR, |
| key_value_str, (uintptr_t)key_value); |
| if (key_value_str == NULL || key_value == NULL) { |
| LOG_WARNING ("received a NULL parameter, all are required"); |
| return false; |
| } |
| tok = strtok_r (key_value_str, delim, &state); |
| if (tok == NULL) { |
| LOG_WARNING ("key / value string is null."); |
| return false; |
| } |
| key_value->key = tok; |
| |
| tok = strtok_r (NULL, delim, &state); |
| if (tok == NULL) { |
| LOG_WARNING ("key / value string is invalid"); |
| return false; |
| } |
| key_value->value = tok; |
| |
| return true; |
| } |
| /* |
| * This function parses the provided configuration string extracting the |
| * key/value pairs. Each key/value pair extracted is stored in a key_value_t |
| * structure and then passed to the provided callback function for processing. |
| * |
| * NOTE: The 'kv_str' parameter is not 'const' and this function will modify |
| * it as part of the parsing process. |
| */ |
| TSS2_RC |
| parse_key_value_string (char *kv_str, |
| KeyValueFunc callback, |
| void *user_data) |
| { |
| const char *delim = ","; |
| char *state, *tok; |
| key_value_t key_value = KEY_VALUE_INIT; |
| TSS2_RC rc = TSS2_RC_SUCCESS; |
| |
| LOG_TRACE ("kv_str: \"%s\", callback: 0x%" PRIxPTR ", user_data: 0x%" |
| PRIxPTR, kv_str, (uintptr_t)callback, |
| (uintptr_t)user_data); |
| if (kv_str == NULL || callback == NULL || user_data == NULL) { |
| LOG_WARNING ("all parameters are required"); |
| return TSS2_TCTI_RC_BAD_VALUE; |
| } |
| for (tok = strtok_r (kv_str, delim, &state); |
| tok; |
| tok = strtok_r (NULL, delim, &state)) { |
| LOG_DEBUG ("parsing key/value: %s", tok); |
| if (parse_key_value (tok, &key_value) != true) { |
| return TSS2_TCTI_RC_BAD_VALUE; |
| } |
| rc = callback (&key_value, user_data); |
| if (rc != TSS2_RC_SUCCESS) { |
| goto out; |
| } |
| } |
| out: |
| return rc; |
| } |