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path: root/lib/dns/funcs.go
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2026-01-15all: convert license and copyright to use SPDX identifiersShulhan
With help of spdxconv tool [1], we able to bulk update all files license and copyright format to comply with SPDX formats. [1] https://kilabit.info/project/spdxconv/
2024-03-05all: comply with linter recommendations #2Shulhan
HTTP request now implicitly create request with context. Any false positive related to not closing HTTP response body has been annotated with "nolint:bodyclose". In the example code, use consistent "// Output:" comment format, by prefixing with single space. Any comment on code now also prefixing with single space. An error returned without variables now use [errors.New] instead of [fmt.Errorf]. Any error returned using [fmt.Errorf] now wrapped using "%w" instead of "%s". Also, replace error checking using [errors.Is] or [errors.As], instead of using equal/not-equal operator. Any statement like "x = x OP y" now replaced with "x OP= y". Also, swap statement is simplified using "x, y = y, x". Any switch statement with single case now replaced with if-condition. Any call to defer on function or program that call [os.Exit], now replaced by calling the deferred function directly. Any if-else condition now replaced with switch statement, if possible.
2024-03-02all: move the repository to "git.sr.ht/~shulhan/pakakeh.go"Shulhan
There are several reasons that why we move from github.com. First, related to the name of package. We accidentally name the package with "share" a common word in English that does not reflect the content of repository. By moving to other repository, we can rename it to better and unique name, in this "pakakeh.go". Pakakeh is Minang word for tools, and ".go" suffix indicate that the repository related to Go programming language. Second, supporting open source. The new repository is hosted under sourcehut.org, the founder is known to support open source, and all their services are licensed under AGPL, unlike GitHub that are closed sources. Third, regarding GitHub CoPilot. The GitHub Terms of Service [1], allow any public content that are hosted there granted them to parse the content. On one side, GitHub helps and flourish the open source, but on another side have an issues regarding scraping the copyleft license [2]. [1]: https://docs.github.com/en/site-policy/github-terms/github-terms-of-service#4-license-grant-to-us [2]: https://githubcopilotinvestigation.com
2023-03-25lib/dns: fix all lint warnings suggested by revive and fieldalignmentShulhan
2022-05-12all: rewrite all codes to use "var" instead of ":="Shulhan
Using ":=" simplify the code but we lose the type. For example, v := F() The only way we know what the type of v is by inspecting the function F. Another disadvantages of using ":=" may cause extra variables allocation where two or more variables with same type is declared inside body of function where it could be only one. While at it, we split the struct for test case into separate type.
2022-05-09all: reformat all codes using gofmt 1.19 (the Go tip)Shulhan
2021-11-16lib/dns: refactoring, change signature of client LookupShulhan
Previously, Lookup() method on Client pass the question name, type, and class as parameters. This changes make those parameters into MessageQuestion.
2021-11-14lib/dns: refactoring, introduce new type RecordClassShulhan
Previously, the record class is represented by uint16 using prefix QueryClassXxx. This changes make the record class to be an independent type, to make code more strict (prevent passing invalid value), and readable.
2021-11-14lib/dns: refactoring, create type RecordType to represent type of RRShulhan
Previously, we use uint16 to represent type for ResourceRecord Type or Question type. To make the code more strict, where parameter or return value, must be expected as record type, we add new type to represent the RR type: RecordType. This changes also rename any variable name of QType or qtype to RType or rtype because QType is misleading. The type defined the ResourceRecord to be queried not only question.
2021-11-13lib/dns: remove unnecessary string convertionShulhan
2020-08-15dns: refactoring the ResourceRecord values from []byte to stringShulhan
There are two reasons for this changes. First, to allow JSON encoded of ResourceRecord.Value without encoded to base64. Second, to minimize unreleased packet due to the backing storage is still used when assigned to Value (or any []byte field in RDataXXX).
2020-08-03dns: refactoring resource record fieldsShulhan
Previously, each record data is represented b¥ its own type, except for A, NS, CNAME, MB, MG, NULL, PTR, and TXT; represented b¥ slice of byte. This changes replace all record data with an interface{}.
2019-06-14all: fix nolint formatShulhan
The valid syntax to suppress linter warnings is "//nolint:<name>" with no space between comment and "nolint" and between ":". Also, we move the placement of nolint directive to the top of statements for multiple nolint in the same scope. While at it, fix and supress some linter warnings.
2019-05-21dns: use the "lib/net" package to reverse the IPv6 addressShulhan
2019-05-17dns: add function to lookup PTR record by IP addressShulhan
The function LookupPTR accept any IP address (either IPv4 or IPv6) and return a single domain name on success or an error on failed. If IP address does not have PTR record it will return empty string without error.
2019-04-12dns: move the ParseNameServers function to file funcsShulhan
This will make the dns.go only contains global variables and constants.
2019-02-07dns: add function to get list of system name serversShulhan