testing subject field reference

net/server/go.mod

@@ -16,6 +16,7 @@ require (
 	github.com/rogpeppe/go-internal v1.6.1 // indirect
 	github.com/stretchr/testify v1.7.0 // indirect
 	github.com/theckman/go-securerandom v0.1.1 // indirect
+	github.com/valyala/fastjson v1.6.3 // indirect
 	golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 	gorm.io/driver/sqlite v1.2.6 // indirect

net/server/go.sum

@@ -33,6 +33,8 @@ github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5Cc
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/theckman/go-securerandom v0.1.1 h1:5KctSyM0D5KKFK+bsypIyLq7yik0CEaI5i2fGcUGcsQ=
 github.com/theckman/go-securerandom v0.1.1/go.mod h1:bmkysLfBH6i891sBpcP4xRM3XIB7jMeiKJB31jlResI=
+github.com/valyala/fastjson v1.6.3 h1:tAKFnnwmeMGPbwJ7IwxcTPCNr3uIzoIj3/Fh90ra4xc=
+github.com/valyala/fastjson v1.6.3/go.mod h1:CLCAqky6SMuOcxStkYQvblddUtoRxhYMGLrsQns1aXY=
 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3 h1:0es+/5331RGQPcXlMfP+WrnIIS6dNnNRe0WB02W0F4M=
 golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

net/server/internal/api_attribute.go

@@ -1,22 +0,0 @@
-/*
- * DataBag
- *
- * DataBag provides storage for decentralized identity based self-hosting apps. It is intended to support sharing of personal data and hosting group conversations. 
- *
- * API version: 0.0.1
- * Contact: roland.osborne@gmail.com
- * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
- */
-package databag
-
-import (
-	"net/http"
-)
-
-
-func GetArticleSubjectField(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
-	w.WriteHeader(http.StatusOK)
-}
-
-

net/server/internal/api_getArticleSubjectField.go

@@ -0,0 +1,69 @@
+package databag
+
+import (
+  "errors"
+  "strings"
+  "net/http"
+  "gorm.io/gorm"
+  "encoding/base64"
+  "github.com/gorilla/mux"
+  "databag/internal/store"
+  "github.com/valyala/fastjson"
+)
+
+func GetArticleSubjectField(w http.ResponseWriter, r *http.Request) {
+
+  // scan parameters
+  params := mux.Vars(r)
+  articleId := params["articleId"]
+  field := params["field"]
+  elements := strings.Split(field, ".")
+
+  var act *store.Account
+  tokenType := r.Header.Get("TokenType")
+  if tokenType == APP_TOKENAPP {
+    account, code, err := BearerAppToken(r, false);
+    if err != nil {
+      ErrResponse(w, code, err)
+      return
+    }
+    act = account
+  } else if tokenType == APP_TOKENCONTACT {
+    card, code, err := BearerContactToken(r, true)
+    if err != nil {
+      ErrResponse(w, code, err)
+      return
+    }
+    act = &card.Account
+  } else {
+    ErrResponse(w, http.StatusBadRequest, errors.New("unknown token type"))
+    return
+  }
+
+  // load article
+  var slot store.ArticleSlot
+  if err := store.DB.Preload("Article").Where("account_id = ? AND article_slot_id = ?", act.ID, articleId).First(&slot).Error; err != nil {
+    if errors.Is(err, gorm.ErrRecordNotFound) {
+      ErrResponse(w, http.StatusNotFound, err)
+    } else {
+      ErrResponse(w, http.StatusInternalServerError, err)
+    }
+    return
+  }
+  if slot.Article == nil {
+    ErrResponse(w, http.StatusNotFound, errors.New("referenced article missing"))
+    return
+  }
+
+  // decode data
+  strData := fastjson.GetString([]byte(slot.Article.Data), elements...)
+  binData, err := base64.StdEncoding.DecodeString(strData)
+  if err != nil {
+    ErrResponse(w, http.StatusNotFound, err)
+    return
+  }
+
+  w.Header().Set("Content-Type", http.DetectContentType(binData))
+  w.Write(binData)
+}
+

net/server/internal/ucShareAttribute_test.go

@@ -1,8 +1,10 @@
 package databag
 
 import (
+  "bytes"
   "testing"
   "strconv"
+  "encoding/base64"
   "github.com/stretchr/testify/assert"
 )
 
@@ -24,6 +26,7 @@ func TestShareAttribute(t *testing.T) {
   var bArticleRevision int64
   var cArticleRevision int64
   hdr := map[string][]string{}
+  var img []byte
 
   // setup testing group
   set, err := AddTestGroup("shareattribute")
@@ -97,7 +100,8 @@ func TestShareAttribute(t *testing.T) {
   assert.Nil(t, (*articles)[0].Data)
 
   // update attribute
-  data := "{ \"nested\" : { \"image\" : \"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\" } }"
+  image := "iVBORw0KGgoAAAANSUhEUgAAAaQAAAGkCAIAAADxLsZiAAAFzElEQVR4nOzWUY3jMBhG0e0qSEqoaIqiaEIoGAxh3gZAldid3nMI+JOiXP3bGOMfwLf7v3oAwAxiBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJGzTXnrtx7S3pnk+7qsnnMk3+ny+0dtcdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQliBySIHZAgdkCC2AEJYgckiB2QIHZAgtgBCWIHJIgdkCB2QILYAQnbtJeej/u0t+Bb+Y/e5rIDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSbmOM1RsALueyAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyAhG31gD/stR+rJ5zv+bivnnAm34hfLjsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBhWz2Az/Laj9UT4BIuOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgITbGGP1BoDLueyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7IAEsQMSxA5IEDsgQeyABLEDEsQOSBA7IEHsgASxAxLEDkgQOyBB7ICEnwAAAP//DQ4epwV6rzkAAAAASUVORK5CYII="
+  data := "{ \"nested\" : { \"image\" : \"" + image + "\" } }"
   subject = &Subject{ Data: data, DataType: "nestedimage" }
   param["articleId"] = article.Id
   article = &Article{}
@@ -133,8 +137,25 @@ func TestShareAttribute(t *testing.T) {
   assert.NoError(t, ApiTestMsg(SetArticleGroup, "PUT", "/attribute/articles/{articleId}/groups/{groupId}",
     &param, nil, APP_TOKENAPP, set.A.Token, article, nil))
 
-  // TODO A retrieve image
+  // A retrieve image
-  // TODO C retrieve image
+  param["articleId"] = article.Id
+  param["field"] = "nested.image"
+  aData, aType, aErr := ApiTestData(GetArticleSubjectField, "GET", "/attributes/articles/{articleId}/subject/{field}",
+    &param, nil, APP_TOKENAPP, set.A.Token)
+  assert.NoError(t, aErr)
+  assert.Equal(t, "image/png", aType["Content-Type"][0])
+  img, _ = base64.StdEncoding.DecodeString(image)
+  assert.Zero(t, bytes.Compare(img, aData))
+
+  // C retrieve image
+  param["articleId"] = article.Id
+  param["field"] = "nested.image"
+  cData, cType, cErr := ApiTestData(GetArticleSubjectField, "GET", "/attributes/articles/{articleId}/subject/{field}",
+    &param, nil, APP_TOKENCONTACT, set.C.A.Token)
+  assert.NoError(t, cErr)
+  assert.Equal(t, "image/png", cType["Content-Type"][0])
+  img, _ = base64.StdEncoding.DecodeString(image)
+  assert.Zero(t, bytes.Compare(img, cData))
 
   // validate B & C view
   cards = &[]Card{}