diff options
Diffstat (limited to 'halimpl/src/util.cc')
| -rw-r--r-- | halimpl/src/util.cc | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/halimpl/src/util.cc b/halimpl/src/util.cc new file mode 100644 index 0000000..fa75db0 --- /dev/null +++ b/halimpl/src/util.cc @@ -0,0 +1,265 @@ +/* + * Copyright (C) 2013 SAMSUNG S.LSI + * + * Licensed 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 <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "util.h" + +/* START [H17080801] HAL config file path */ +#define CFG_FILE_1 "/vendor/etc/libnfc-sec-vendor.conf" +#define CFG_FILE_2 "/etc/libnfc-sec-vendor.conf" +/* END [H17080801] HAL config file path */ + +#define isToken(x) (x == ':' || x == '=' || x == ' ' || x == '\t') +#define skipToken(x) \ + while (isToken(*x)) x++ +#define skipSpace(x) \ + while (isspace(*x)) x++ + +bool willBeContinuous(char* buffer, size_t maxlen) { + char* p; + size_t len; + if (!buffer) return false; + + len = strnlen(buffer, maxlen); + if (len == maxlen && buffer[len - 2] != '\n') return true; + + p = buffer + len - 1; + while (isspace(*p) && p > buffer) p--; + if (*p == '\\') return true; + return false; +} + +bool find_by_name_from_current(FILE* file, const char* field) { + char *p, buffer[256] = { + '\0', + }; + size_t len; + int fp; + bool skip = false; + + if (!file || !field) return false; + + len = strlen(field); + while (!feof(file) && fgets(buffer, sizeof(buffer) - 1, file)) { + if (skip) { + skip = willBeContinuous(buffer, sizeof(buffer)); + continue; + } + skip = willBeContinuous(buffer, sizeof(buffer)); + + p = buffer; + skipSpace(p); + if (*p == '#') continue; + + if (!strncmp((char const*)field, (char const*)p, len)) { + fp = -strlen(p); + fp += len; + return (fseek(file, fp, SEEK_CUR) == 0) ? true : false; + } + } + return false; +} + +bool find_by_name(FILE* file, const char* field) { + fseek(file, 0x00, SEEK_SET); + return find_by_name_from_current(file, field); +} + +bool __get_config_int(__attribute__((unused)) char* file_path, + const char* field, int* data, int option) { + FILE* file; + char buffer[10], *p, *endp; + size_t len; + long int val; + + if (!field || !data) return false; + + /* START [H17080801] HAL config file path */ + if ((file = fopen(CFG_FILE_1, "rb")) == NULL) { + OSI_loge("Cannot open config file %s", CFG_FILE_1); + if ((file = fopen(CFG_FILE_2, "rb")) == NULL) { + OSI_loge("Cannot open config file %s", CFG_FILE_2); + return 0; + } + } + /* END [H17080801] HAL config file path */ + + if (!find_by_name(file, field)) { + OSI_loge("Cannot find the field name [%s]", field); + goto fail; + } + + if (!fgets(buffer, sizeof(buffer) - 1, file)) { + OSI_loge("Read failed"); + goto fail; + } + + if (willBeContinuous(buffer, sizeof(buffer))) // not supported multi line + goto fail; + + if ((len = strlen(buffer)) == sizeof(buffer) - 1) { + OSI_loge("It is too long data [%s~]; max", buffer); + goto fail; + } + + p = buffer; + skipToken(p); + if (*p == '\0') { + OSI_loge("It is empty data"); + goto fail; + } + + if (((*p == '0') && (*(p + 1) == 'x')) || option == HAL_UTIL_GET_INT_16) + val = strtol(p, &endp, 0x10); + else + val = strtol(p, &endp, 10); + + if (p == endp) { + OSI_loge("Read failed [%s]", buffer); + goto fail; + } + + OSI_logd("Get config %s: %ld(0x%lx)", field, val, val); + + fclose(file); + + *data = val; + return true; + +fail: + fclose(file); + return false; +} + +bool get_config_int(const char* field, int* data) { + /* START [17080801] HAL config file path */ + return __get_config_int((char*)CFG_FILE_1, field, data, 0); + /* END [17080801] HAL config file path */ +} + +int get_config_string(const char* field, char* strBuffer, size_t bufferSize) { + FILE* file; + char data[256], *buffer, *p; + bool readmore = true; + size_t count = 0; + + if (!field || !strBuffer || bufferSize < 1) return 0; + + /* START [H17080801] HAL config file path */ + if ((file = fopen(CFG_FILE_1, "rb")) == NULL) { + OSI_loge("Cannot open config file %s", CFG_FILE_1); + if ((file = fopen(CFG_FILE_2, "rb")) == NULL) { + OSI_loge("Cannot open config file %s", CFG_FILE_2); + return 0; + } + } + /* END [H17080801] HAL config file path */ + + if (!find_by_name(file, field)) { + OSI_logd("Cannot find the field name [%s]", field); + goto fail; + } + + if ((buffer = (char*)malloc(bufferSize)) == NULL) { + OSI_logd("Cannot allocate temporary buffer for [%s]", field); + goto fail; + } + + while (count < bufferSize - 1 && readmore) { + if (!fgets(data, sizeof(data) - 1, file)) { + OSI_loge("Read failed"); + goto fail_free; + } + + readmore = willBeContinuous(data, sizeof(data)); + p = data; + while ((p = strchr(p, '"')) != NULL) // start string + { + for (p++; *p != '"'; p++) // end string + { + if (*p == '\n' || *p == '\0' || *p == '\\') { + OSI_loge("Cannot find ending point of string"); + goto fail_free; + } + buffer[count++] = *p; + } + p++; + } + } + buffer[count] = '\0'; + + OSI_logd("Get config %s: %s", field, buffer); + if (count == bufferSize) { + if (p == NULL) + goto fail_free; + else if (*p != '\n') + OSI_loge("Overflower!, remained data is [%s]", p); + else if (readmore) + OSI_loge("Overflower!, data is remained! (multi line)"); + } + + count++; + memcpy(strBuffer, buffer, count); + free(buffer); + + fclose(file); + return count; + +fail_free: + free(buffer); +fail: + fclose(file); + return 0; +} + +int get_config_count(const char* field) { + FILE* file; + int count = 0; + + /* START [H17080801] HAL config file path */ + if ((file = fopen(CFG_FILE_1, "rb")) == NULL) { + OSI_loge("Cannot open config file %s", CFG_FILE_1); + if ((file = fopen(CFG_FILE_2, "rb")) == NULL) { + OSI_loge("Cannot open config file %s", CFG_FILE_2); + return 0; + } + } + /* END [H17080801] HAL config file path */ + + while (find_by_name_from_current(file, field)) count++; + + fclose(file); + return count; +} + +int get_hw_rev() { + char* info_file = (char*)"/proc/cpuinfo"; + char* field = (char*)"Revision"; + int rev = -1; + + OSI_logd("%s enter;", __func__); + __get_config_int(info_file, field, &rev, HAL_UTIL_GET_INT_16); + OSI_logd("%s exit; rev = %d", __func__, rev); + + return rev; +} |