# taskTimer

cron 表达式代表一个时间的集合，使用 6 个空格分隔的字段表示：

字段名	是否必须	允许的值	允许的特定字符
秒 (Seconds)	是	0-59	* / , -
分 (Minute)	是	0-59	* / , -
时 (Hours)	是	0-23	* / , -
日 (Day of month)	是	1-31	* / , - ?
月 (Month)	是	1-12 或 JAN-DEC	* / , -
星期 (Day of week)	否	0-6 或 SUM-SAT	* / , - ?

```
/* 
   ------------------------------------------------------------
   第64位标记任意 ， 用于 日/周 ， 日 / 月 的相互干扰。
- 0 为 表示区间 [63 , 0] 的 每一个点。
   ------------------------------------------------------------ 

   假设区间是 0 - 63 ， 则有如下的例子 ： 

   比如  0/3 的表示如下 ： (表示每隔两位为1)
   * / ?       
   +---+--------------------------------------------------------+
   | 0 | 1 0 0 1 0 0 1  ~~  ~~                    1 0 0 1 0 0 1 |
   +---+--------------------------------------------------------+   
~ ~                                           ~~ 0 

   比如  2-5 的表示如下 ： (表示从右往左2-5位上都是1)
   * / ?       
   +---+--------------------------------------------------------+
   | 0 | 0 0 0 0 ~  ~      ~~            ~    0 0 0 1 1 1 1 0 0 |
   +---+--------------------------------------------------------+   
~ ~                                           ~~ 0 

  比如  * 的表示如下 ： (表示所有位置上都为1)
   * / ?       
   +---+--------------------------------------------------------+
   | 1 | 1 1 1 1 1 ~  ~                  ~    1 1 1 1 1 1 1 1 1 |
   +---+--------------------------------------------------------+   
~ ~                                           ~~ 0 
*/

```
### thanks
- https://hacpai.com/article/1534497226108
- https://github.com/robfig/cron 


Meet the Socket Team at BlackHat and DEF CON in Las Vegas, Aug 4-6

github.com/penglq/tasktimer

tasktimer

(Experimental) An ambiguous license classifier was found.

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Ambiguous License Classifier

Source files are encoded using a non-standard text encoding.

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Bad text encoding

Package version is not a valid semantic version (semver).

What is bad semver?

Bad semver

Package has dependencies with an invalid semantic version. This could be a sign of beta, low quality, or unmaintained dependencies.

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Bad dependency semver

Source files contain bidirectional unicode control characters. This could indicate a Trojan source supply chain attack. See: trojansource.codes for more information.

What are bidirectional unicode control characters?

Bidirectional unicode control characters

This package has multiple bin scripts with the same name. This can cause non-deterministic behavior when installing or could be a sign of a supply chain attack.

What is bin script confusion?

Bin script confusion

This Chrome extension includes a content script '{scriptFile}' that runs on websites matching '{matches}'.

What are Chrome extension content scripts?

Chrome Extension Content Script

This Chrome extension requests access to '{host}'.

What are Chrome extension host permissions?

Chrome Extension Host Permission

This Chrome extension uses the '{permission}' permission.

What are Chrome extension permissions?

Chrome Extension Permission

This Chrome extension requests broad access to websites with the pattern '{host}'.

What are Chrome extension wildcard host permissions?

Chrome Extension Wildcard Host Permission

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

What is a compromised SSH key?

Compromised SSH key

(Experimental) Copyleft license information was found.

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Copyleft License

Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

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What is a CVE?

High CVE

Uses debug, reflection and dynamic code execution features.

What is debug access?

Debug access

The maintainer of the package marked it as deprecated. This could indicate that a single version should not be used, or that the package is no longer maintained and any new vulnerabilities will not be fixed.

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Deprecated

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Deprecated SPDX exception

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

What is a typosquat?

Possible typosquat attack

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Dynamic require

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What is an empty package?

Empty package

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

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Environment variable access

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Name

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File dependency

Accesses the file system, and could potentially read sensitive data.

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Filesystem access

Package has a dependency with a floating version range. This can cause issues if the dependency publishes a new major version.

What are wildcard dependencies?

Wildcard dependency

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What are git dependencies?

Git dependency

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GitHub dependency

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AI-detected potential malware

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AI-detected potential security risk

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Native code

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High entropy strings

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Unicode homoglyphs

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HTTP dependency

Install scripts are run when the package is installed. The majority of malware in npm is hidden in install scripts.

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Install scripts

Package has an invalid manifest file and can cause installation problems if you try to use it.

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Invalid manifest file

Source files contain invisible characters. This could indicate source obfuscation or a supply chain attack.

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Invisible chars

(Experimental) Package license has recently changed.

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License change

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License exception

This package is not allowed per your license policy. Review the package's license to ensure compliance.

What is a license policy violation?

License Policy Violation

Contains long string literals, which may be a sign of obfuscated or packed code.

What's wrong with long strings?

Long strings

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

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Major refactor

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Known malware

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Manifest confusion

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Medium CVE

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Low CVE

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Minified code

(Experimental) A package's licensing information has fine-grained problems.

Misc. License Issues

The package was published by an npm account that no longer exists.

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Non-existent author

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(Experimental) Package does not have a license and consumption legal status is unknown.

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Missing license

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Mixed license

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Modified license exception

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Modified license

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Network access

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

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New author

Package does not specify a list of contributors or an author in package.json.

Why is contributor and author data important?

No contributors or author data

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No bug tracker

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No License Found

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No README

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Why are missing repositories important?

No repository

Package does not have any tests. This is a strong signal of a poorly maintained or low quality package.

github.com/penglq/tasktimer

taskTimer

thanks

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