From 53e8f05e75672dabd1fafdef5a41455a936e1a33 Mon Sep 17 00:00:00 2001 From: Matthew R Date: Fri, 11 Dec 2020 00:18:06 -0500 Subject: [PATCH] Initial commit --- README.md | 48 ++++++++++++++++++ cmd/main.go | 14 ++++++ go.mod | 17 +++++++ go.sum | 132 ++++++++++++++++++++++++++++++++++++++++++++++++++ routes/get.go | 86 ++++++++++++++++++++++++++++++++ 5 files changed, 297 insertions(+) create mode 100644 README.md create mode 100644 cmd/main.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 routes/get.go diff --git a/README.md b/README.md new file mode 100644 index 0000000..c7dff78 --- /dev/null +++ b/README.md @@ -0,0 +1,48 @@ +# Certificate API +## Library of Code sp-us | Board of Directors + +This is an HTTP API which provides information on the x509 certificates deployed on TLS sites. +You can self-host this yourself, however you're more than welcome to use the public API at https://certapi.libraryofcode.org/ + +### How to Query +Send a GET request to `https://certapi.libraryofcode.org` with the query parameter `q` set to equal the site you wish to dial. +Ex: `https://certapi.libraryofcode.org/?q=www.google.com` + +### Response & Types +#### Error +If the status !== `true`, there will be a message field which displays the error. +```ts +{ + status: false, + message: string, +} +``` + +### 200 | SUCCESS +```ts +{ + status: true | false, + subject: { + commonName: string, + organization: string[], + organizationalUnit: string[], + locality: string[], + country: string[], + }, + issuer: { + commonName: string, + organization: string[], + organizationalUnit: string[], + locality: string[], + country: string[], + }, + validationType: 'DV' | 'OV' | 'EV', + signatureAlgorithm: string, + publicKeyAlgorithm: string, + serialNumber: number, + notAfter: Date, + extendedKeyUsage: ['All/Any Usages', 'TLS Web Server Authentication', 'TLS Web Client Authentication', 'Code Signing', 'E-mail Protection (S/MIME)'], + san: string, + fingerprint: string, +} +``` diff --git a/cmd/main.go b/cmd/main.go new file mode 100644 index 0000000..86508f8 --- /dev/null +++ b/cmd/main.go @@ -0,0 +1,14 @@ +package main + +import ( + "github.com/gin-gonic/gin" + "gitlab.libraryofcode.org/engineering/certificate-api/routes" +) + +func main() { + router := gin.Default() + + router.GET("/", routes.GetCertificateInfo) + + router.Run(":3030") +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..ea46623 --- /dev/null +++ b/go.mod @@ -0,0 +1,17 @@ +module gitlab.libraryofcode.org/engineering/certificate-api + +go 1.14 + +require ( + github.com/gin-gonic/gin v1.6.3 + github.com/go-playground/validator/v10 v10.4.1 // indirect + github.com/golang/protobuf v1.4.3 // indirect + github.com/json-iterator/go v1.1.10 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.1 // indirect + github.com/ugorji/go v1.2.1 // indirect + golang.org/x/crypto v0.0.0-20201208171446-5f87f3452ae9 // indirect + golang.org/x/sys v0.0.0-20201211002650-1f0c578a6b29 // indirect + google.golang.org/protobuf v1.25.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..855a716 --- /dev/null +++ b/go.sum @@ -0,0 +1,132 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod 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h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10= +gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= +gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/routes/get.go b/routes/get.go new file mode 100644 index 0000000..dc80de3 --- /dev/null +++ b/routes/get.go @@ -0,0 +1,86 @@ +package routes + +import ( + "crypto/sha1" + "crypto/tls" + "encoding/hex" + "fmt" + "github.com/gin-gonic/gin" + "net/http" +) + +// GetCertificateInfo handler +func GetCertificateInfo(c *gin.Context) { + query := c.Query("q") + resp, err := tls.Dial("tcp", query+":443", &tls.Config{}) + if err != nil { + fmt.Println(err) + c.JSON(http.StatusBadRequest, gin.H{ + "status": false, + "message": "Could not establish connection with server.", + }) + return + } + certificate := resp.ConnectionState().PeerCertificates[0] + + var validationType string + for _, value := range certificate.PolicyIdentifiers { + if value.String() == "2.23.140.1.1" { + validationType = "EV" + } else if value.String() == "2.23.140.1.2.2" { + validationType = "OV" + } else if value.String() == "2.23.140.1.2.1" { + validationType = "DV" + } + } + + extendedKeyUsages := []string{} + for _, value := range certificate.ExtKeyUsage { + switch value { + case 0: + extendedKeyUsages = append(extendedKeyUsages, "All/Any Usages") + break + case 1: + extendedKeyUsages = append(extendedKeyUsages, "TLS Web Server Authentication") + break + case 2: + extendedKeyUsages = append(extendedKeyUsages, "TLS Web Client Authentication") + break + case 3: + extendedKeyUsages = append(extendedKeyUsages, "Code Signing") + break + case 4: + extendedKeyUsages = append(extendedKeyUsages, "E-mail Protection (S/MIME)") + default: + break + } + } + + sum := sha1.Sum(certificate.Raw) + + c.JSON(http.StatusOK, gin.H{ + "status": true, + "subject": gin.H{ + "commonName": certificate.Subject.CommonName, + "organization": certificate.Subject.Organization, + "organizationalUnit": certificate.Subject.OrganizationalUnit, + "locality": certificate.Subject.Locality, + "country": certificate.Subject.Country, + }, + "issuer": gin.H{ + "commonName": certificate.Issuer.CommonName, + "organization": certificate.Issuer.Organization, + "organizationalUnit": certificate.Issuer.OrganizationalUnit, + "locality": certificate.Issuer.Locality, + "country": certificate.Issuer.Country, + }, + "validationType": validationType, + "signatureAlgorithm": certificate.SignatureAlgorithm.String(), + "publicKeyAlgorithm": certificate.PublicKeyAlgorithm.String(), + "serialNumber": certificate.SerialNumber.Int64(), + "notAfter": certificate.NotAfter, + "extendedKeyUsage": extendedKeyUsages, + "san": certificate.DNSNames, + "fingerprint": hex.EncodeToString(sum[:]), + }) +}