8aaf9bbb0e
FTP 的 socket 适配层吃满——全仓第一个 **100% 行覆盖**的文件(127/127)。 新增 test/host/lftpd_inet/,28 条断言全部 MSVC 编译通过并 PASS。 钉住的契约: - 端口字节序:bind 前必须过 net_htons(sin_port 的注释就写着"网络字节序"),问名字 回来要 ntohs 还原;问不到名字报 -1,不拿脏端口当结果。 - 失败路径一律关 socket:建口失败不 bind;bind 失败关口不 listen;listen 失败关口 并各留一条 ERROR(漏关就是白占一个号,CH395F 只有 8 个)。 - accept 每轮失败都让出 CPU(同一段里也喂狗),直到成功;**网络代次一变立刻撤掉 accept**——否则改了 IP 之后监听还挂在旧代次上,端口在新地址上根本不通。这是现场 最常见的自愈路径,台架上要凑"对面正连着我顺手改 IP"极难。 - 带超时的 accept:监听门撤防时**立即放弃**,不对着死监听耗满窗口;对端一直不开 数据通道就按 100ms 步进等满再 INFO 收场。 - read_line:CRLF 就地截成结束符(FTP 命令行的边界);跨包分片要能拼出整行;读到 0 (对端关闭)立刻失败;-2 表示这一片超时继续等;其它负值**原样返回**(错误码不许被 吞成 -1);等待按 200ms 分片、30 s 总预算到点退出(分片写错就饿死看门狗);缓冲 填满仍无行尾要失败且**不越界写**(最后一格留给结束符)。 - 短写续传:net_send 可以只写一部分,续传必须从正确偏移接着写(少半条响应就是协议 错乱);写 0 字节按失败处理;二进制写成功时回请求长度。 桩的口径:private/lftpd_inet.h 与 net_types.h 用真实头;net_socket.h 是桩但函数原型 与真实头逐字一致,并**照做真实头对 FreeRTOS.h / task.h 的 include**(lftpd_inet.c 的 TickType_t / vTaskDelay / pdMS_TO_TICKS 就是从那条链上拿的,桩少这一行就是 C2065)。 lftpd_task_wd_beat 是 __weak 空实现、主机侧替换不掉,因此用同段代码里的"睡 100ms" 次数当喂狗轮数的代理(写进桩注释,不假装能直接数到喂狗)。accept 循环带 100 轮跑飞 保险(net_select 批次被挂死教训换来的)。 覆盖率与台账:套件 25 → 26 全绿;files_tested 29 → 30;未触及 .c 37 → 36;分母 3,945 → 4,072 行;line=3599/4072(**88.4%**,连涨三批)、func=272/299(91.0%)。 恒等式 36 = 2(P1 剩:lftpd.c 与 iec104_serv.c) + 5(P2) + 29(P3) 仍咬合。编号补建 TC-HOST-LFTINET(游标 070),族数 19 → 20。 自查:test-cppcheck Passed;check_ids --strict 通过;doc-links 35 处(= 存量); 9 个新增/改动文件 BOM/CR/U+FFFD/行尾逐项净。零生产代码改动,未跑 @build。 --all-files 仍只有 mem-numbers / mem-budget(.map 台账漂移,等 Lead 合并后统一回填) 与 ui-golden(ref/*.bin 不入库,新 worktree 天生没有黄金参考)三条失败,与本分支无关。
457 lines
16 KiB
C
457 lines
16 KiB
C
/*
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* 模块名称:FTP 的 socket 适配层(lftpd_inet)主机侧单元测试
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* 模块功能:在 PC 上离线验证 Drivers/BSP/NET/lftpd/lftpd_inet.c 的监听/接受/读写
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* 适配:端口必须过 htons、回来的端口要 ntohs 还原;accept 循环每轮喂狗并
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* 让出 CPU、**网络代次一变就立刻撤掉 accept**(否则新 IP 生效后监听还挂在
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* 旧代次上);带超时的 accept 在监听门撤防时立即放弃;read_line 的 CRLF
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* 截断、分片拼接、-2 继续等、其它负值原样返回、200ms 分片与 30 s 总预算;
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* 短写续传(FTP 响应少半条就是协议错乱)。
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*
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* 被测对象:真实源文件 ../../../../Drivers/BSP/NET/lftpd/lftpd_inet.c(#include 纳入)。
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* private/lftpd_inet.h 用真实头;net_types.h 用**真实头**(struct
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* net_sockaddr_in 的 sin_port 注释就写着"网络字节序",htons/ntohs 的契约
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* 靠它才钉得住)。假的是 socket 层本身:accept 序列、bind/listen 返回码、
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* 代次变化点、监听门开关、recv 的返回序列 + 字节流、send 的短写序列,
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* 外加可控 tick 与 vTaskDelay 计数(带跑飞保险)。
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*
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* 为什么要主机侧单测(而不是只靠台架):
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* 1. 代次撤 accept 与"监听门撤防就放弃"这两条只在**异常时刻**成立(网络重建、
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* 客户端连上控制口却迟迟不开数据通道)。台架上要凑"对面正连着我顺手改 IP"
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* 这种时序极难,而真机上它是现场最常见的自愈路径。
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* 2. 200ms 分片 + 30 s 总预算是 FTP 控制信道的等待结构:分片写错会把看门狗饿到
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* 复位(每轮都要喂),预算写错会让 ftpTask 永久卡在一条命令上。两者都需要
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* "按毫秒数着"才能验证。
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* 3. 短写续传:net_send 可以只写一部分;如果适配层按一次写完处理,FTP 响应就会
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* 少半条(客户端表现为协议错乱、卡住),而这种短写在真机上取决于当时缓冲余量。
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* 4. lftpd_task_wd_beat 在本文件是 __weak 空实现(真机由 lftpd.c 覆盖),主机侧
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* 替换不掉,所以用同一段里的"睡 100ms"次数当喂狗轮数的代理(已在桩里注明)。
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*
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* 覆盖点:TC-LFTINET-001..004 监听;005/006 端口还原;010..012 accept 与代次;
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* 020..022 带超时 accept 与撤防;030..036 read_line;040..043 write_string;
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* 050 write;060..062 read;070 close。
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*
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* 通过:全部 TC PASS(main 返回 0)。
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* 入口:int main(void),返回 0=PASS / 1=FAIL(由 run 脚本判读)。
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*
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* 创建日期:2026-10-23
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "private/lftpd_inet.h"
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#include "net_types.h"
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#include "net_socket.h"
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#include "lftpd_inet.c"
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static int s_total;
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static int s_passed;
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static int s_failed;
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#define CHECK(cond, name) do { \
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s_total++; \
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if (cond) { s_passed++; printf(" PASS %s\n", name); } \
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else { s_failed++; printf(" FAIL %s (line %d)\n", name, __LINE__); } \
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} while (0)
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int g_lfi_info_count;
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int g_lfi_error_count;
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int g_lfi_debug_count;
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/* ===================== 可控 socket 层 ===================== */
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typedef struct {
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int socket_rc;
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int bind_rc;
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int listen_rc;
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int getsock_rc;
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uint16_t getsock_port_net;
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int accept_seq[16];
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int accept_n;
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int accept_i;
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int accept_calls;
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int gen;
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int gen_flip_after;
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int armed;
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int recv_seq[24];
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int recv_n;
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int recv_i;
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int recv_calls;
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uint32_t last_recv_timeout;
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char rx[512];
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int rx_pos;
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int send_seq[8];
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int send_n;
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int send_i;
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int send_calls;
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int send_off[8];
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const char *send_base;
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int socket_calls;
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int bind_calls;
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int listen_calls;
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int close_calls;
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int last_domain;
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int last_type;
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uint16_t last_bind_port_net;
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int delay_calls;
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TickType_t tick;
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} lfi_net_t;
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static lfi_net_t g_net;
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static void net_reset(void)
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{
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(void)memset(&g_net, 0, sizeof(g_net));
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g_net.socket_rc = 3;
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g_net.bind_rc = 0;
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g_net.listen_rc = 0;
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g_net.getsock_rc = 0;
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g_net.armed = 1;
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g_net.gen = 7;
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g_net.tick = 0u;
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}
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uint32_t net_get_generation(void) { return (uint32_t)g_net.gen; }
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int net_listener_armed(int sockfd) { (void)sockfd; return g_net.armed; }
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uint16_t net_htons(uint16_t hostshort)
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{
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return (uint16_t)((uint16_t)((hostshort & 0xFFU) << 8) | (uint16_t)(hostshort >> 8));
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}
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uint16_t net_ntohs(uint16_t netshort)
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{
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return net_htons(netshort);
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}
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int net_socket(int domain, int type)
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{
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g_net.socket_calls++;
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g_net.last_domain = domain;
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g_net.last_type = type;
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return g_net.socket_rc;
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}
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int net_bind(int sockfd, const struct net_sockaddr *addr, int addrlen)
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{
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const struct net_sockaddr_in *a = (const struct net_sockaddr_in *)addr;
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(void)sockfd;
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(void)addrlen;
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g_net.bind_calls++;
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g_net.last_bind_port_net = a->sin_port;
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return g_net.bind_rc;
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}
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int net_listen(int sockfd)
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{
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(void)sockfd;
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g_net.listen_calls++;
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return g_net.listen_rc;
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}
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int net_close(int sockfd)
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{
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(void)sockfd;
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g_net.close_calls++;
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return 0;
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}
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int net_accept(int sockfd, struct net_sockaddr *addr, int *addrlen)
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{
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int r;
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(void)sockfd;
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(void)addr;
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(void)addrlen;
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g_net.accept_calls++;
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if ((g_net.gen_flip_after > 0) && (g_net.accept_calls >= g_net.gen_flip_after)) {
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g_net.gen++; /* 模拟网络在这期间重建(代次 +1) */
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}
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if (g_net.accept_i < g_net.accept_n) {
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r = g_net.accept_seq[g_net.accept_i++];
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} else {
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r = (g_net.accept_n > 0) ? g_net.accept_seq[g_net.accept_n - 1] : -1;
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}
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return r;
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}
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int net_getsockname(int sockfd, struct net_sockaddr *addr, int *addrlen)
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{
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struct net_sockaddr_in *a = (struct net_sockaddr_in *)addr;
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(void)sockfd;
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(void)addrlen;
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a->sin_port = g_net.getsock_port_net;
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return g_net.getsock_rc;
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}
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int net_recv_to(int sockfd, void *buf, int len, uint32_t timeout_ms)
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{
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int r;
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int i;
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(void)sockfd;
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g_net.recv_calls++;
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g_net.last_recv_timeout = timeout_ms;
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/* 每次调用当作耗掉一个 200ms 片:让 30 s 总预算的到点路径可测 */
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g_net.tick += 200u;
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if (g_net.recv_i < g_net.recv_n) {
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r = g_net.recv_seq[g_net.recv_i++];
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} else {
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r = (g_net.recv_n > 0) ? g_net.recv_seq[g_net.recv_n - 1] : -2;
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}
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if (r > 0) {
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for (i = 0; (i < r) && (i < len) && (g_net.rx_pos < (int)sizeof(g_net.rx)); i++) {
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((char *)buf)[i] = g_net.rx[g_net.rx_pos++];
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}
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}
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return r;
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}
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int net_send(int sockfd, const void *buf, int len, int flags)
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{
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int r;
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(void)sockfd;
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(void)flags;
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if (g_net.send_base == NULL) {
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g_net.send_base = (const char *)buf;
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}
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g_net.send_calls++;
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if (g_net.send_i < 8) {
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g_net.send_off[g_net.send_i] = (int)((const char *)buf - g_net.send_base);
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}
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if (g_net.send_i < g_net.send_n) {
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r = g_net.send_seq[g_net.send_i++];
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} else {
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r = (g_net.send_n > 0) ? g_net.send_seq[g_net.send_n - 1] : len;
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}
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return r;
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}
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TickType_t xTaskGetTickCount(void) { return g_net.tick; }
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void vTaskDelay(TickType_t xTicksToDelay)
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{
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(void)xTicksToDelay;
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g_net.delay_calls++;
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if (g_net.delay_calls > 100) {
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/* 跑飞保险:本模块每条用例都必须在有限轮内退出(accept 序列要么成功、
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* 要么撤防、要么代次变化)。真跑飞就退出,绝不把挂死留给 pre-commit。 */
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printf(" ABORT accept/等待循环跑飞(>100 轮未退出)\n");
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fflush(stdout);
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exit(2);
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}
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}
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static void logs_clear(void)
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{
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g_lfi_info_count = 0;
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g_lfi_error_count = 0;
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g_lfi_debug_count = 0;
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}
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/* ===================== 监听与端口还原 ===================== */
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static void tc_listen(void)
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{
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printf("-- TC-LFTINET-001..006 listen / port --\n");
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net_reset(); logs_clear();
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g_net.socket_rc = -1;
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CHECK((lftpd_inet_listen(21) == -1) && (g_net.bind_calls == 0) &&
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(g_lfi_error_count == 1), "TC-LFTINET-001 建 socket 失败即返回,不再 bind");
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net_reset(); logs_clear();
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g_net.bind_rc = -1;
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CHECK((lftpd_inet_listen(21) == -1) && (g_net.close_calls == 1) &&
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(g_net.listen_calls == 0), "TC-LFTINET-002 bind 失败要把 socket 关掉");
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net_reset(); logs_clear();
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g_net.listen_rc = -1;
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CHECK((lftpd_inet_listen(21) == -1) && (g_net.close_calls == 1) &&
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(g_lfi_error_count == 1), "TC-LFTINET-003 listen 失败同样关socket 并留痕");
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net_reset(); logs_clear();
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CHECK((lftpd_inet_listen(21) == 3) && (g_net.last_domain == NET_AF_INET) &&
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(g_net.last_type == NET_SOCK_STREAM) &&
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(g_net.last_bind_port_net == net_htons(21u)) && (g_net.listen_calls == 1),
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"TC-LFTINET-004 流式监听口,且**端口过了 htons**(sin_port 是网络序)");
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net_reset(); logs_clear();
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g_net.getsock_rc = -1;
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CHECK((lftpd_inet_get_socket_port(3) == -1) && (g_lfi_error_count == 1),
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"TC-LFTINET-005 问不到名字就报 -1(不拿脏端口当结果)");
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net_reset(); logs_clear();
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g_net.getsock_port_net = net_htons(8888u);
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CHECK(lftpd_inet_get_socket_port(3) == 8888,
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"TC-LFTINET-006 端口回来要 ntohs 还原成宿主序");
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}
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/* ===================== accept:喂狗、代次、撤防 ===================== */
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static void tc_accept(void)
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{
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printf("-- TC-LFTINET-010..012 / 020..022 accept --\n");
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net_reset(); logs_clear();
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g_net.accept_seq[0] = 9; g_net.accept_n = 1;
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CHECK((lftpd_inet_accept(3) == 9) && (g_net.delay_calls == 0),
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"TC-LFTINET-010 一击即中不睡不等");
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net_reset(); logs_clear();
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g_net.accept_seq[0] = -1; g_net.accept_seq[1] = -1; g_net.accept_seq[2] = 9;
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g_net.accept_n = 3;
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CHECK((lftpd_inet_accept(3) == 9) && (g_net.delay_calls == 2) &&
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(g_lfi_info_count == 0),
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"TC-LFTINET-011 每轮失败都让出一次 CPU(同段代码里也喂狗),直到成功");
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net_reset(); logs_clear();
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g_net.accept_seq[0] = -1; g_net.accept_seq[1] = -1; g_net.accept_seq[2] = -1;
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g_net.accept_n = 3;
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g_net.gen_flip_after = 3; /* 第 3 轮时网络重建 */
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CHECK((lftpd_inet_accept(3) == -1) && (g_lfi_info_count == 1) &&
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(g_net.accept_calls == 3),
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"TC-LFTINET-012 **代次一变立刻撤掉 accept**(否则新 IP 生效后监听还挂在旧代次)");
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net_reset(); logs_clear();
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g_net.accept_seq[0] = -1; g_net.accept_seq[1] = 9; g_net.accept_n = 2;
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CHECK((lftpd_inet_accept_timeout(3, 5000) == 9) && (g_net.delay_calls == 1),
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"TC-LFTINET-020 超时窗内等到数据通道");
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net_reset(); logs_clear();
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g_net.accept_seq[0] = -1; g_net.accept_seq[1] = -1; g_net.accept_n = 2;
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g_net.armed = 0; /* 监听门被撤(会话已放弃) */
|
||
CHECK((lftpd_inet_accept_timeout(3, 5000) == -1) && (g_net.accept_calls == 1) &&
|
||
(g_lfi_error_count == 1),
|
||
"TC-LFTINET-021 监听门撤防立即放弃,不对着死监听耗满 5 s");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.accept_seq[0] = -1; g_net.accept_n = 1;
|
||
CHECK((lftpd_inet_accept_timeout(3, 300) == -1) && (g_net.delay_calls == 3) &&
|
||
(g_lfi_info_count == 1),
|
||
"TC-LFTINET-022 对端一直不开数据通道:按 100ms 步进等满后 INFO 收场");
|
||
}
|
||
|
||
/* ===================== read_line:分片、截断、预算 ===================== */
|
||
|
||
static void tc_read_line(void)
|
||
{
|
||
char b[32];
|
||
int rc;
|
||
|
||
printf("-- TC-LFTINET-030..036 read_line --\n");
|
||
net_reset(); logs_clear();
|
||
(void)strcpy(g_net.rx, "USER admin\r\n");
|
||
g_net.recv_seq[0] = 12; g_net.recv_n = 1;
|
||
rc = lftpd_inet_read_line(3, b, sizeof(b));
|
||
CHECK((rc == 0) && (strcmp(b, "USER admin") == 0),
|
||
"TC-LFTINET-030 一次到位:CRLF 就地截成结束符(FTP 命令行的边界)");
|
||
|
||
net_reset(); logs_clear();
|
||
(void)strcpy(g_net.rx, "USER admin\r\n");
|
||
g_net.recv_seq[0] = 4; g_net.recv_seq[1] = 8; g_net.recv_n = 2;
|
||
rc = lftpd_inet_read_line(3, b, sizeof(b));
|
||
CHECK((rc == 0) && (strcmp(b, "USER admin") == 0),
|
||
"TC-LFTINET-031 分两片到达也要拼出整行(跨包命令行)");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.recv_seq[0] = 0; g_net.recv_n = 1;
|
||
CHECK(lftpd_inet_read_line(3, b, sizeof(b)) == -1,
|
||
"TC-LFTINET-032 读到 0(对端关闭)立刻失败,不进死循环");
|
||
|
||
net_reset(); logs_clear();
|
||
(void)strcpy(g_net.rx, "NOOP\r\n");
|
||
g_net.recv_seq[0] = -2; g_net.recv_seq[1] = 6; g_net.recv_n = 2;
|
||
rc = lftpd_inet_read_line(3, b, sizeof(b));
|
||
CHECK((rc == 0) && (strcmp(b, "NOOP") == 0),
|
||
"TC-LFTINET-033 -2 表示这一片超时,继续等而不是当错误");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.recv_seq[0] = -5; g_net.recv_n = 1;
|
||
CHECK(lftpd_inet_read_line(3, b, sizeof(b)) == -5,
|
||
"TC-LFTINET-034 其它负值**原样返回**(错误码不许被吞成 -1)");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.recv_seq[0] = -2; g_net.recv_n = 1; /* 一直超时,每轮耗 200ms */
|
||
rc = lftpd_inet_read_line(3, b, sizeof(b));
|
||
CHECK((rc == -1) && (g_net.recv_calls == 150) &&
|
||
(g_net.last_recv_timeout <= 200u),
|
||
"TC-LFTINET-035 30 s 总预算按 200ms 分片累加,到点退出(饿不到看门狗)");
|
||
|
||
net_reset(); logs_clear();
|
||
(void)memset(g_net.rx, 'A', 40); /* 没有 CRLF 的长行 */
|
||
g_net.recv_seq[0] = 7; g_net.recv_n = 1;
|
||
(void)memset(b, 0, sizeof(b));
|
||
rc = lftpd_inet_read_line(3, b, 8);
|
||
CHECK((rc == -1) && (b[7] == '\0'),
|
||
"TC-LFTINET-036 缓冲填满仍无行尾:失败且**不越界写**(留最后一格给结束符)");
|
||
}
|
||
|
||
/* ===================== 写与读 ===================== */
|
||
|
||
static void tc_write_read(void)
|
||
{
|
||
char b[16];
|
||
const char msg[] = "220 ready\r\n";
|
||
|
||
printf("-- TC-LFTINET-040..070 write / read / close --\n");
|
||
net_reset(); logs_clear();
|
||
g_net.send_seq[0] = 12; g_net.send_n = 1;
|
||
CHECK((lftpd_inet_write_string(3, msg) == 0) && (g_net.send_calls == 1),
|
||
"TC-LFTINET-040 一次写完");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.send_seq[0] = 5; g_net.send_seq[1] = 7; g_net.send_n = 2;
|
||
CHECK((lftpd_inet_write_string(3, msg) == 0) && (g_net.send_calls == 2) &&
|
||
(g_net.send_off[1] == 5),
|
||
"TC-LFTINET-041 短写后续传从**正确的偏移**接着写(少半条响应就是协议错乱)");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.send_seq[0] = 0; g_net.send_n = 1;
|
||
CHECK((lftpd_inet_write_string(3, msg) == -1) && (g_lfi_error_count == 1),
|
||
"TC-LFTINET-042 写 0 字节按失败处理(不是当成成功写了 0 字节)");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.send_seq[0] = -1; g_net.send_n = 1;
|
||
CHECK(lftpd_inet_write(3, msg, 12) == -1, "TC-LFTINET-043 写失败原样回 -1");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.send_seq[0] = 4; g_net.send_seq[1] = 6; g_net.send_n = 2;
|
||
CHECK((lftpd_inet_write(3, msg, 10) == 10) && (g_net.send_calls == 2),
|
||
"TC-LFTINET-050 二进制写也走短写续传,成功时回**请求长度**");
|
||
|
||
net_reset(); logs_clear();
|
||
(void)strcpy(g_net.rx, "STOR\r\n");
|
||
g_net.recv_seq[0] = 4; g_net.recv_n = 1;
|
||
CHECK(lftpd_inet_read(3, b, sizeof(b)) == 4, "TC-LFTINET-060 读到数据立刻交还");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.recv_seq[0] = -1; g_net.recv_n = 1;
|
||
CHECK(lftpd_inet_read(3, b, sizeof(b)) == -1, "TC-LFTINET-061 -1 直接失败返回");
|
||
|
||
net_reset(); logs_clear();
|
||
g_net.recv_seq[0] = -3; g_net.recv_n = 1;
|
||
CHECK((lftpd_inet_read(3, b, sizeof(b)) == -1) && (g_net.recv_calls > 1),
|
||
"TC-LFTINET-062 其它负值继续等,直到 30 s 预算耗尽");
|
||
|
||
net_reset(); logs_clear();
|
||
CHECK((lftpd_inet_close(3) == 0) && (g_net.close_calls == 1),
|
||
"TC-LFTINET-070 close 就是转 net_close");
|
||
}
|
||
|
||
int main(void)
|
||
{
|
||
printf("=== LFTPD INET Tests ===\n");
|
||
|
||
tc_listen();
|
||
tc_accept();
|
||
tc_read_line();
|
||
tc_write_read();
|
||
|
||
printf("\n=== LFTPD INET Tests: %d/%d PASSED (failed=%d) ===\n",
|
||
s_passed, s_total, s_failed);
|
||
return (s_failed == 0) ? 0 : 1;
|
||
}
|