/** * 为当前访问者启用 session * * @param const char* datadir 用于保存 session 数据文件的目录 * * @return int 成功返回0,失败返回非0值 */ int session_start(const char* datadir) { char cookie_session_id[34]; int result; if (g_session_data != NULL) { fprintf(cgiOut, "Warning: session_start() calls again.<br />\n"); return -1; } // 初始化 session_data sess_init(datadir); // 根据 cookie 状态确定是创建新 session 还是载入现有的 session result = cgiCookieString("CWEB_SESSION_ID", cookie_session_id, 33); #ifdef DEBUG fprintf(cgiOut, "cgiCookieString() result: %u\n", result); fprintf(cgiOut, "cookie_session_id: %s\n", cookie_session_id); #endif if (result != cgiFormSuccess) { // 没有找到有效的 cookie session_id,创建一个新 session result = sess_create(); } else { result = sess_load(cookie_session_id, datadir); } sess_gc(); //处理过期session return result; }
Object * object_new (Object_Type type) { struct free_list_el *el; Event_Type event = 0; size_t obj_size; Any_Type arg; Object *obj; obj_size = type_size[type]; if (free_list[type]) { el = free_list[type]; free_list[type] = el->next; obj = (Object *) el; } else { obj = malloc (obj_size); if (!obj) { fprintf (stderr, "%s.object_new: %s\n", prog_name, strerror (errno)); return 0; } } memset (obj, 0, obj_size); obj->ref_count = 1; obj->type = type; switch (type) { case OBJ_CALL: call_init ((Call *) obj); event = EV_CALL_NEW; break; case OBJ_CONN: conn_init ((Conn *) obj); event = EV_CONN_NEW; break; case OBJ_SESS: sess_init ((Sess *) obj); event = EV_SESS_NEW; break; default: panic ("object_new: bad object type %d\n", type); break; } arg.l = 0; event_signal (event, obj, arg); return obj; }
static struct h_scalar *session_hash_cache_create_fn(struct h_table *ht, void *key, uint8_t *is_syn) { struct key_5tuple *k = (struct key_5tuple *)key; struct sft_fdb_entry *dc; if(k->proto == IPPROTO_TCP && !k->is_syn) { return NULL; } struct sess_hash *hash = get_session_hash_by_lcore(rte_lcore_id()); if(rte_mempool_mc_get(hash->mem_cache, (void **)&dc) <0) return NULL; hash->curr_entry_count++; sess_init(dc, k); return &dc->h_scalar; }
/** * 载入现有的 session * * @param const char* session_id 要读取的 session_id * @param const char* datadir * * @return int 成功返回0,失败返回非0值 */ int sess_load(const char* session_id, const char* datadir) { FILE* fp = NULL; char* buffer = NULL; char* tmp = NULL; SESSION_ITEM_LIST tmp_list = NULL; size_t buffer_length = 2048; int index = 0; if (g_session_data == NULL) { return -1; } #ifdef DEBUG fprintf(cgiOut, "sess_load() BEGIN -->\n"); #endif // 构造 session_data g_session_data->session_id = (char*) malloc( (strlen(session_id) + 1) * sizeof(char)); strcpy(g_session_data->session_id, session_id); g_session_data->session_filename = sess_get_filename( g_session_data->session_datadir, g_session_data->session_id); #ifdef DEBUG fprintf(cgiOut, "sess_load(), session file:%s\n", g_session_data->session_filename); #endif fp = fopen(g_session_data->session_filename, "r"); if (fp == NULL) { // 无效的 session_filename sess_free_resource(); sess_init(datadir); return sess_create(); } buffer = (char*) malloc(buffer_length * sizeof(char)); tmp = buffer; while (!feof(fp)) { if (fgets(tmp, buffer_length, fp) == NULL) { break; } /* if (buffer[strlen(buffer) + 1] != '\n' && !feof(fp)) { // 缓冲区太小,无法容纳该行字符串 buffer_length += buffer_length; tmp = (char*)malloc(buffer_length * sizeof(char)); strcpy(tmp, buffer); free(buffer); buffer = tmp; tmp = buffer += strlen(buffer); continue; } */ // 如果 count >= max_index,则需要增加列表容量 if (g_session_data->count >= g_session_data->max_index) { g_session_data->max_index += 10; #ifdef DEBUG fprintf(cgiOut, "* items count: %ld, max_index grow up to: %ld\n", g_session_data->count, g_session_data->max_index); #endif tmp_list = (SESSION_ITEM_LIST) malloc( g_session_data->max_index * sizeof(SESSION_ITEM)); memset(tmp_list, 0, g_session_data->max_index * sizeof(SESSION_ITEM)); if (g_session_data->items != NULL) { memcpy(tmp_list, g_session_data->items, g_session_data->count * sizeof(SESSION_ITEM)); free(g_session_data->items); } g_session_data->items = tmp_list; tmp_list = NULL; } // 添加一个新项目 if ((index % 2) == 0) { tmp = g_session_data->items[g_session_data->count].name; #ifdef DEBUG fprintf(cgiOut, "read name:"); #endif } else { tmp = g_session_data->items[g_session_data->count].string; #ifdef DEBUG fprintf(cgiOut, "read string:"); #endif } if (buffer[strlen(buffer) - 1] == '\n') { buffer[strlen(buffer) - 1] = '\0'; } tmp = sess_unserialize(buffer); #ifdef DEBUG fprintf(cgiOut, "%s\n", tmp); #endif if ((index % 2) == 0) { g_session_data->items[g_session_data->count].name = tmp; } else { g_session_data->items[g_session_data->count].string = tmp; g_session_data->count++; } // 增加索引,准备读取下一行 tmp = buffer; index++; } free(buffer); fclose(fp); if ((index % 2) != 0) { free(g_session_data->items[g_session_data->count - 1].name); g_session_data->items[g_session_data->count - 1].name = NULL; } #ifdef DEBUG session_dump(cgiOut); #endif #ifdef DEBUG fprintf(cgiOut, "sess_load() END -->\n"); #endif return 0; }