Header value of string type is not validated against the pattern #184
Description
The header value isn't validated properly if the value type is string. Judging by the code, validation only occurs if the schema specifies valid enum values; in all other cases, validation is completely ignored. If type: is left blank, the default validation for the schema will be triggered, and a validation error will be returned for invalid_value.
Versions in my go.mod
github.com/pb33f/libopenapi v0.28.0
github.com/pb33f/libopenapi-validator v0.6.4
Example
package main
import (
"fmt"
"net/http"
"github.com/pb33f/libopenapi"
"github.com/pb33f/libopenapi-validator/parameters"
)
func main() {
spec := `openapi: 3.1.0
paths:
/burgers/beef:
get:
parameters:
- name: X-Request-Test
in: header
required: true
schema:
type: string
format: uuid
pattern: '^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$'
`
doc, _ := libopenapi.NewDocument([]byte(spec))
m, _ := doc.BuildV3Model()
v := parameters.NewParameterValidator(&m.Model)
request, _ := http.NewRequest(http.MethodGet, "https://things.com/burgers/beef", nil)
request.Header.Add("X-Request-Test", "invalid_value")
valid, errors := v.ValidateHeaderParams(request)
fmt.Println(valid) // valid == True, should be False
fmt.Println(errors) // errors == [], should be not empty
}