blob: bf8dde8a156cef3d74c328ea46d64efd217b91a4 [file] [log] [blame]
// Copyright 2016 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdio.h>
#include <string.h>
#include <regex.h>
#include "label_detect.h"
bool get_board_name(int board_buffer_len, char *board) {
const char *kBoardKey = "CHROMEOS_RELEASE_BOARD=";
char line[1024];
bool found = false;
FILE *fp = fopen("/etc/lsb-release", "r");
if (!fp) {
TRACE("failed to open /etc/lsb-release\n");
return false;
}
while (fgets(line, sizeof(line), fp)) {
if (strlen(line) == sizeof(line) - 1) {
TRACE("line too long\n");
break;
}
if (strncmp(line, kBoardKey, strlen(kBoardKey)) != 0)
continue;
/* chomp trailing newline character. */
line[strlen(line) - 1] = '\0';
char *p = line + strlen(kBoardKey);
if (strlen(p) >= board_buffer_len) {
TRACE("board name too long: %s\n", p);
break;
}
strcpy(board, p);
found = true;
}
fclose(fp);
if (!found) {
TRACE("not found line starts with %s\n", kBoardKey);
}
return found;
}
void match_rule(char *board, char *rule_line) {
char *pattern, *label;
char *comment = strchr(rule_line, '#');
/* ignore comments */
if (comment)
*comment = '\0';
pattern = strtok(rule_line, " \t\n");
if (!pattern)
return; // blank line
regex_t reg;
regmatch_t match;
regcomp(&reg, pattern, REG_EXTENDED);
if (regexec(&reg, board, 1, &match, 0) == 0) {
TRACE("matched %s\n", pattern);
for (label = strtok(NULL, " \t\n"); label; label = strtok(NULL, " \t\n")) {
printf("Detected label: %s\n", label);
}
}
regfree(&reg);
}
void detect_label_by_board_name() {
const char *conf_filename = "/usr/local/etc/avtest_label_detect.conf";
const int kMaxBoardLen = 64;
char board[kMaxBoardLen];
char rule_line[1024];
FILE *fp;
if (!get_board_name(sizeof(board), board))
return;
TRACE("board=%s\n", board);
fp = fopen(conf_filename, "r");
if (fp) {
while (fgets(rule_line, sizeof(rule_line), fp)) {
if (strlen(rule_line) == sizeof(rule_line) - 1) {
TRACE("rule line too long, skip\n");
continue;
}
match_rule(board, rule_line);
}
fclose(fp);
} else {
TRACE("Cannot read %s, skip\n", conf_filename);
}
}