c

blockip/src/log.c

@@ -0,0 +1,63 @@
+#include "log.h"
+#include <stdarg.h>
+#include <fcntl.h>
+#include <sys/file.h>
+
+int log_init(void) {
+    FILE *fp = fopen(LOG_FILE, "a");
+    if (!fp) {
+        return ERROR_FILE;
+    }
+    chmod(LOG_FILE, 0666);
+    fclose(fp);
+    return SUCCESS;
+}
+
+void log_rotate(void) {
+    struct stat st;
+    if (stat(LOG_FILE, &st) != 0) {
+        return;
+    }
+    
+    if (st.st_size >= MAX_LOG_SIZE) {
+        char backup_file[MAX_PATH_LEN];
+        snprintf(backup_file, sizeof(backup_file), "%s.1", LOG_FILE);
+        
+        remove(backup_file);
+        rename(LOG_FILE, backup_file);
+        
+        FILE *fp = fopen(LOG_FILE, "w");
+        if (fp) {
+            chmod(LOG_FILE, 0666);
+            fclose(fp);
+        }
+    }
+}
+
+void log_write(const char *format, ...) {
+    log_rotate();
+    
+    FILE *fp = fopen(LOG_FILE, "a");
+    if (!fp) {
+        return;
+    }
+    
+    char timestamp[64];
+    get_timestamp(timestamp, sizeof(timestamp));
+    
+    fprintf(fp, "[%s] ", timestamp);
+    
+    va_list args;
+    va_start(args, format);
+    vfprintf(fp, format, args);
+    va_end(args);
+    
+    fprintf(fp, "\n");
+    fclose(fp);
+}
+
+void log_show_recent(int lines) {
+    char command[MAX_COMMAND_LEN];
+    snprintf(command, sizeof(command), "tail -n %d %s 2>/dev/null", lines, LOG_FILE);
+    system(command);
+}