mirror of
https://github.com/RubyMetric/chsrc.git
synced 2024-11-29 12:43:41 +08:00
480 lines
12 KiB
C
480 lines
12 KiB
C
/** ------------------------------------------------------------
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* File : chsrc.h
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* License : GPLv3
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* Authors : Aoran Zeng <ccmywish@qq.com>
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* Created on : <2023-08-29>
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* Last modified : <2024-06-07>
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*
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* chsrc:
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*
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* chsrc.c 头文件
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* ------------------------------------------------------------*/
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#include "xy.h"
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#include "source.h"
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#define App_Prefix "chsrc: "
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#define chsrc_success(str) xy_success(xy_2strjoin(App_Prefix, (str)))
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#define chsrc_info(str) xy_info(xy_2strjoin(App_Prefix, (str)))
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#define chsrc_warn(str) xy_warn(xy_2strjoin(App_Prefix, (str)))
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#define chsrc_error(str) xy_error(xy_2strjoin(App_Prefix, (str)))
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bool Cli_Option_IPv6 = false;
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bool Cli_Option_Locally = false;
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bool Cli_Option_InEnglish = false;
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/**
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* 检测二进制程序是否存在
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*
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* @param check_cmd 检测 `prog_name` 是否存在的一段命令，一般来说，填 `prog_name` 本身即可，
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* 但是某些情况下，需要使用其他命令绕过一些特殊情况，比如 python 这个命令在Windows上
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* 会自动打开 Microsoft Store，需避免
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*
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* @param prog_name 要检测的二进制程序名
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*/
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bool
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query_program_exist (char *check_cmd, char *prog_name)
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{
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char *which = check_cmd;
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int ret = system(which);
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// char buf[32] = {0}; sprintf(buf, "错误码: %d", ret);
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if (0 != ret)
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{
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// xy_warn (xy_strjoin(4, "× 命令 ", progname, " 不存在，", buf));
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puts (xy_strjoin (4, xy_str_to_red ("x "), "命令 ", xy_str_to_red (prog_name), " 不存在"));
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return false;
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}
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else
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{
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puts (xy_strjoin (4, xy_str_to_green ("√ "), "命令 ", xy_str_to_green (prog_name), " 存在"));
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return true;
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}
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}
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/**
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* 用于 _setsrc 函数，检测用户输入的镜像站code，是否存在于该target可用源中
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*
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* @param target 目标名
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* @param input 如果用户输入 default 或者 def，则选择第一个源
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*/
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#define find_mirror(s, input) query_mirror_exist(s##_sources, s##_sources_n, (char*)#s+3, input)
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int
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query_mirror_exist (SourceInfo *sources, size_t size, char *target, char *input)
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{
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if (0==size || 1==size)
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{
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xy_error (xy_strjoin (3, "当前 ", target, " 无任何可用源，请联系维护者"));
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exit (1);
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}
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if (2==size)
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{
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xy_success (xy_strjoin (4, sources[1].mirror->name, " 是 ", target, " 目前唯一可用镜像站，感谢他们的慷慨支持"));
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}
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if (xy_streql ("reset", input))
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{
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puts ("将重置为上游默认源");
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return 0; // 返回第1个，因为第1个是上游默认源
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}
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if (xy_streql ("first", input))
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{
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puts ("使用维护团队测速第一的源");
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return 1; // 返回第2个，因为第1个是上游默认源
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}
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int idx = 0;
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SourceInfo source = sources[0];
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bool exist = false;
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for (int i=0; i<size; i++)
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{
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source = sources[i];
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if (xy_streql (source.mirror->code, input))
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{
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idx = i;
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exist = true;
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break;
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}
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}
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if (!exist)
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{
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xy_error (xy_strjoin (3, "镜像站 ", input, " 不存在"));
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xy_error (xy_2strjoin ("查看可使用源，请使用 chsrc list ", target));
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exit (1);
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}
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return idx;
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}
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/**
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* 该函数来自 oh-my-mirrorz.py，由 @ccmywish 翻译为C语言，但功劳和版权属于原作者
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*/
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char *
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to_human_readable_speed (double speed)
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{
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char *scale[] = {"Byte/s", "KByte/s", "MByte/s", "GByte/s", "TByte/s"};
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int i = 0;
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while (speed > 1024.0)
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{
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i += 1;
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speed /= 1024.0;
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}
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char *buf = xy_malloc0 (64);
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sprintf (buf, "%.2f %s", speed, scale[i]);
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char *new = NULL;
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if (i <= 1 ) new = xy_str_to_red (buf);
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else
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{
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if (i == 2 && speed < 2.00) new = xy_str_to_yellow (buf);
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else new = xy_str_to_green (buf);
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}
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return new;
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}
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/**
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* 测速代码参考自 https://github.com/mirrorz-org/oh-my-mirrorz/blob/master/oh-my-mirrorz.py
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* 功劳和版权属于原作者，由 @ccmywish 修改为C语言，并做了额外调整
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*
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* @return 返回测得的速度，若出错，返回-1
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*/
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double
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test_speed_url (const char *url)
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{
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char *time_sec = "6";
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/* 现在我们切换至跳转后的链接来测速，不再使用下述判断
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if (xy_str_start_with(url, "https://registry.npmmirror"))
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{
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// 这里 npmmirror 跳转非常慢，需要1~3秒，所以我们给它留够至少8秒测速时间，否则非常不准
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time_sec = "10";
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}
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*/
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char *ipv6 = ""; // 默认不启用
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if (Cli_Option_IPv6==true) {
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ipv6 = "--ipv6";
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}
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// 我们用 —L，因为Ruby China源会跳转到其他地方
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// npmmirror 也会跳转
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char *curl_cmd = xy_strjoin (7, "curl -qsL ", ipv6,
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" -o " xy_os_devnull,
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" -w \"%{http_code} %{speed_download}\" -m", time_sec ,
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" -A chsrc/" Chsrc_Version " ", url);
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// xy_info (xy_2strjoin ("chsrc: 测速命令 ", curl_cmd));
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char *buf = xy_getcmd (curl_cmd, 0, NULL);
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// 如果尾部有换行，删除
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buf = xy_str_strip (buf);
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// 分隔两部分数据
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char *split = strchr (buf, ' ');
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if (split) *split = '\0';
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// puts(buf); puts(split+1);
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int http_code = atoi (buf);
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double speed = atof (split+1);
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char *speedstr = to_human_readable_speed (speed);
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if (200!=http_code)
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{
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char* httpcodestr = xy_str_to_yellow (xy_2strjoin ("HTTP码 ", buf));
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puts (xy_strjoin (3, speedstr, " | ", httpcodestr));
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}
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else
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{
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puts (speedstr);
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}
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return speed;
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}
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int
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get_max_ele_idx_in_dbl_ary (double *array, int size)
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{
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double maxval = array[0];
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int maxidx = 0;
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for (int i=1; i<size; i++)
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{
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if (array[i]>maxval)
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{
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maxval = array[i];
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maxidx = i;
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}
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}
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return maxidx;
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}
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/**
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* 自动测速选择镜像站和源
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*/
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#define auto_select(s) auto_select_(s##_sources, s##_sources_n, (char*)#s+3)
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int
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auto_select_ (SourceInfo *sources, size_t size, const char *target)
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{
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if (0==size || 1==size)
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{
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xy_error (xy_strjoin (3, "chsrc: 当前 ", target, " 无任何可用源，请联系维护者"));
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exit (1);
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}
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bool onlyone = false;
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if (2==size) onlyone = true;
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double speeds[size];
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double speed = 0.0;
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for (int i=0;i<size;i++)
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{
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SourceInfo src = sources[i];
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const char* url = src.mirror->__bigfile_url;
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if (NULL==url)
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{
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if (xy_streql ("upstream", src.mirror->code))
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{
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continue; // 上游默认源不测速
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}
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else
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{
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chsrc_warn (xy_strjoin (3, "开发者未提供 ", src.mirror->code, " 镜像站测速链接，跳过该站点"));
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speed = 0;
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}
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}
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else
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{
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printf ("%s", xy_strjoin (3, "测速 ", src.mirror->site , " ... "));
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fflush (stdout);
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speed = test_speed_url (url);
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}
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speeds[i] = speed;
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}
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int fastidx = get_max_ele_idx_in_dbl_ary (speeds, size);
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if (onlyone)
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xy_success (xy_strjoin (4, sources[fastidx].mirror->name, " 是 ", target, " 目前唯一可用镜像站，感谢他们的慷慨支持"));
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else
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puts (xy_2strjoin ("最快镜像站: ", xy_str_to_green (sources[fastidx].mirror->name)));
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return fastidx;
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}
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#define use_specific_mirror_or_auto_select(input, s) \
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(NULL!=(input)) ? find_mirror(s, input) : auto_select(s)
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bool
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is_upstream (SourceInfo *source)
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{
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return xy_streql (source->mirror->code, "upstream");
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}
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bool
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source_is_null (SourceInfo *source)
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{
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return source->url == NULL;
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}
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/**
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* 用于 _setsrc 函数
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*
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* 1. 告知用户选择了什么源和镜像
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* 2. 对选择的源和镜像站进行一定的校验
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*/
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void
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chsrc_say_selection (SourceInfo *source)
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{
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// 由于实现问题，我们把本应该独立出去的默认上游源，也放在了可以换源的数组中，而且放在第一个
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// chsrc 已经规避用户使用未实现的 `chsrc reset`
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// 但是某些用户可能摸索着强行使用 chsrc set target upstream，从而执行起该禁用的功能，
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// 之所以禁用，是因为有的 reset 我们并没有实现，我们在这里阻止这些邪恶的用户
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if (is_upstream (source) && source_is_null (source))
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{
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chsrc_error ("暂未对该软件实现重置");
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exit (2);
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}
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else if (source_is_null (source))
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{
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chsrc_error ("该源URL不存在，请向开发团队提交bug");
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exit (2);
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}
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else
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{
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puts (xy_strjoin (5, "选中镜像站: ", xy_str_to_green (source->mirror->abbr), " (", xy_str_to_green (source->mirror->code), ")"));
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}
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}
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void
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chsrc_say_thanks (SourceInfo *source)
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{
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puts ("--------------------------------");
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if (is_upstream (source))
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{
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puts (xy_str_to_purple ("已重置为上游默认源"));
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}
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else
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{
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puts (xy_2strjoin ("换源完成，感谢镜像提供方: ", xy_str_to_purple (source->mirror->name)));
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}
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}
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void
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chsrc_ensure_root ()
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{
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char *euid = getenv ("$EUID");
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if (NULL==euid)
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{
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char *buf = xy_getcmd ("id -u", 0, NULL);
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if (0!=atoi(buf)) goto not_root;
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else return;
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}
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else
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{
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if (0!=atoi(euid)) goto not_root;
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else return;
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}
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not_root:
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xy_error ("chsrc: 请在命令前使用 sudo 或切换为root用户来保证必要的权限");
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exit (1);
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}
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static void
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chsrc_run (const char *cmd)
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{
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puts ("~~~~~~~~~~~");
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puts (xy_2strjoin ("运行 ", xy_str_to_blue (cmd)));
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system (cmd);
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}
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static void
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chsrc_check_file (const char *path)
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{
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char *cmd = NULL;
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path = xy_uniform_path (path);
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if(xy_on_windows)
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{
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cmd = xy_2strjoin ("type ", path);
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}
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else
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{
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cmd = xy_2strjoin ("cat ", path);
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}
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chsrc_run (cmd);
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}
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static void
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chsrc_ensure_dir (const char *dir)
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{
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dir = xy_uniform_path (dir);
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char *mkdir_cmd = NULL;
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if (xy_on_windows)
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{
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mkdir_cmd = "md ";
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}
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else
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{
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mkdir_cmd = "mkdir -p ";
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}
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char *cmd = xy_2strjoin (mkdir_cmd, dir);
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cmd = xy_str_to_quietcmd (cmd);
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chsrc_run (cmd);
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}
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static void
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chsrc_append_to_file (const char *str, const char *file)
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{
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file = xy_uniform_path (file);
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char *dir = xy_parent_dir (file);
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chsrc_ensure_dir (dir);
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char *cmd = NULL;
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if (xy_on_windows)
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{
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cmd = xy_strjoin (4, "echo ", str, " >> ", file);
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}
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else
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{
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cmd = xy_strjoin (4, "echo '", str, "' >> ", file);
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}
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chsrc_run (cmd);
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}
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static void
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chsrc_overwrite_file (const char *str, const char *file)
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{
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file = xy_uniform_path (file);
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char *dir = xy_parent_dir (file);
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chsrc_ensure_dir (dir);
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char *cmd = NULL;
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if (xy_on_windows)
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{
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cmd = xy_strjoin (4, "echo ", str, " > ", file);
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}
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else
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{
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cmd = xy_strjoin (4, "echo '", str, "' > ", file);
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}
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chsrc_run (cmd);
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}
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static void
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chsrc_backup (const char *path)
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{
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char *cmd = NULL;
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if (xy_on_bsd)
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{
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// 似乎BSD的cp并没有 --backup='t' 选项
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cmd = xy_strjoin (5, "cp -f ", path, " ", path, ".bak");
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}
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else if (xy_on_windows)
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{
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// /Y 表示覆盖
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cmd = xy_strjoin (5, "copy /Y ", path, " ", path, ".bak" );
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}
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else
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{
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cmd = xy_strjoin (5, "cp ", path, " ", path, ".bak --backup='t'");
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}
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chsrc_run (cmd);
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chsrc_info (xy_strjoin (3, "备份文件名 ", path, ".bak"));
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}
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/* Target Info */
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typedef struct TargetInfo_t {
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void (*getfn) (char *option);
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void (*setfn) (char *option);
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void (*resetfn) (char *option);
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SourceInfo *sources;
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size_t sources_n;
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} TargetInfo;
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// 大部分target还不支持reset，所以暂时先默认设置为NULL来过渡
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#define def_target(t) TargetInfo t##_target = {t##_getsrc, t##_setsrc, NULL, t##_sources, t##_sources_n}
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#define def_target_full(t) TargetInfo t##_target = {t##_getsrc, t##_setsrc, t##_resetsrc, t##_sources, t##_sources_n}
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#define def_target_noget(t) TargetInfo t##_target = {NULL, t##_setsrc, NULL, t##_sources, t##_sources_n}
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