add CLI command to create a new card, fixes #1

new_card_request.go

@@ -0,0 +1,71 @@
+package main
+
+import (
+	"encoding/json"
+	log "github.com/sirupsen/logrus"
+	"net/http"
+	"os"
+)
+
+type NewCardResponse struct {
+	K0                 string `json:"k0"`
+	K1                 string `json:"k1"`
+	K2                 string `json:"k2"`
+}
+
+func new_card_request(w http.ResponseWriter, req *http.Request) {
+
+	url := req.URL.RequestURI()
+	log.Debug("new_card url: ", url)
+
+	params_a, ok := req.URL.Query()["a"]
+	if !ok || len(params_a[0]) < 1 {
+		log.Debug("a not found")
+		return
+	}
+
+	a := params_a[0]
+
+	if a == "00000000000000000000000000000000" {
+		response := NewCardResponse{}
+		response.K0 = "11111111111111111111111111111111"
+		response.K1 = "22222222222222222222222222222222"
+		response.K2 = "33333333333333333333333333333333"
+		log.Debug("special a = 0...0")
+
+		jsonData, err := json.Marshal(response)
+		if err != nil {
+			log.Warn(err)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		w.Write(jsonData)
+
+		return;
+	}
+
+	c, err := db_get_new_card(a)
+	if err != nil {
+		log.Warn(err)
+		return
+	}
+
+	aes_decrypt_key := os.Getenv("AES_DECRYPT_KEY")
+
+	response := NewCardResponse{}
+	response.K0 = c.lock_key
+	response.K1 = aes_decrypt_key
+	response.K2 = c.aes_cmac
+
+	jsonData, err := json.Marshal(response)
+	if err != nil {
+		log.Warn(err)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	w.Write(jsonData)
+}