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389ce0aae6
We should not check if the mux framework internals work as expected in every handler. The missing parameter error doesn't make sense from the user point of view. This change initializes a proper vars context if the mux fails to do so and delegates specific parameter error checks to the handlers. Signed-off-by: David Calavera <david.calavera@gmail.com>
73 lines
2 KiB
Go
73 lines
2 KiB
Go
package httputils
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import (
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"fmt"
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"net/http"
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"path/filepath"
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"strconv"
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"strings"
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)
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// BoolValue transforms a form value in different formats into a boolean type.
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func BoolValue(r *http.Request, k string) bool {
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s := strings.ToLower(strings.TrimSpace(r.FormValue(k)))
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return !(s == "" || s == "0" || s == "no" || s == "false" || s == "none")
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}
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// BoolValueOrDefault returns the default bool passed if the query param is
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// missing, otherwise it's just a proxy to boolValue above
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func BoolValueOrDefault(r *http.Request, k string, d bool) bool {
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if _, ok := r.Form[k]; !ok {
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return d
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}
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return BoolValue(r, k)
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}
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// Int64ValueOrZero parses a form value into an int64 type.
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// It returns 0 if the parsing fails.
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func Int64ValueOrZero(r *http.Request, k string) int64 {
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val, err := Int64ValueOrDefault(r, k, 0)
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if err != nil {
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return 0
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}
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return val
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}
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// Int64ValueOrDefault parses a form value into an int64 type. If there is an
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// error, returns the error. If there is no value returns the default value.
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func Int64ValueOrDefault(r *http.Request, field string, def int64) (int64, error) {
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if r.Form.Get(field) != "" {
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value, err := strconv.ParseInt(r.Form.Get(field), 10, 64)
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if err != nil {
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return value, err
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}
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return value, nil
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}
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return def, nil
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}
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// ArchiveOptions stores archive information for different operations.
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type ArchiveOptions struct {
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Name string
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Path string
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}
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// ArchiveFormValues parses form values and turns them into ArchiveOptions.
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// It fails if the archive name and path are not in the request.
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func ArchiveFormValues(r *http.Request, vars map[string]string) (ArchiveOptions, error) {
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if err := ParseForm(r); err != nil {
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return ArchiveOptions{}, err
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}
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name := vars["name"]
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path := filepath.FromSlash(r.Form.Get("path"))
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switch {
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case name == "":
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return ArchiveOptions{}, fmt.Errorf("bad parameter: 'name' cannot be empty")
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case path == "":
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return ArchiveOptions{}, fmt.Errorf("bad parameter: 'path' cannot be empty")
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}
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return ArchiveOptions{name, path}, nil
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}
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