tests

.vscode/settings.json

@@ -8,6 +8,7 @@
         "*.wxs": "javascript",
         "*.json": "jsonc",
         "string.h": "c",
-        "shm.h": "c"
+        "shm.h": "c",
+        "unistd.h": "c"
     }
 }

Makefile

@@ -1,5 +1,5 @@
 CC = gcc
-CFLAGS = -shared -fPIC -Wall -Wextra -Werror
+CFLAGS = -shared -fPIC -Wall -Wextra -Werror -O2 -fno-strict-aliasing -fPIC -fno-omit-frame-pointer -fno-stack-protector -Wl,-z,relro,-z,now
 LDFLAGS = -ldl -ljson-c
 TARGET = intercept.so
 SRC = execve_intercept.c
@@ -15,4 +15,8 @@ $(TARGET): $(SRC)
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
 clean:
-	rm -f $(TARGET)
+	rm -f $(TARGET)
+
+debug:
+	$(MAKE) DEBUG=1
+	

tests/shm_reader.c

@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <time.h>
+
+#define SHM_KEY 12345
+#define MAX_RULES 100
+#define MAX_ARGS 10
+
+typedef struct {
+    char cmd[256];
+    char type[32];
+    char msg[1024];
+    char args[MAX_ARGS][256];
+    int arg_count;
+} Rule;
+
+typedef struct {
+    bool enabled;
+    Rule rules[MAX_RULES];
+    int rule_count;
+} ConfigData;
+
+void print_config(const ConfigData *cfg) {
+    printf("=== Config ===\n");
+    printf("Enabled: %s\n", cfg->enabled ? "true" : "false");
+    printf("Rule count: %d\n", cfg->rule_count);
+    for (int i = 0; i < cfg->rule_count && i < MAX_RULES; i++) {
+        const Rule *r = &cfg->rules[i];
+        printf("Rule %d:\n", i + 1);
+        printf("  CMD : %s\n", r->cmd);
+        printf("  Type: %s\n", r->type);
+        printf("  Msg : %s\n", r->msg);
+        printf("  Args(%d):\n", r->arg_count);
+        for (int j = 0; j < r->arg_count && j < MAX_ARGS; j++) {
+            printf("    - %s\n", r->args[j]);
+        }
+    }
+    printf("=====================\n\n");
+}
+
+int main() {
+    int shmid = shmget(SHM_KEY, sizeof(ConfigData), 0666);
+    if (shmid < 0) {
+        perror("shmget failed");
+        return 1;
+    }
+
+    ConfigData *shared_cfg = (ConfigData *)shmat(shmid, NULL, SHM_RDONLY);
+    if (shared_cfg == (void *)-1) {
+        perror("shmat failed");
+        return 1;
+    }
+
+    ConfigData last_cfg = {0};
+
+    struct timespec ts;
+    ts.tv_sec = 0;
+    ts.tv_nsec = 100 * 1000000; // 100ms
+
+    while (1) {
+        if (memcmp(&last_cfg, shared_cfg, sizeof(ConfigData)) != 0) {
+            printf(">>> Config changed:\n");
+            print_config(shared_cfg);
+            memcpy(&last_cfg, shared_cfg, sizeof(ConfigData));
+        }
+        nanosleep(&ts, NULL);  // 每 100 毫秒检查一次
+    }
+
+    shmdt(shared_cfg);
+    return 0;
+}