New API functions /profile/list, /profile/read, /profile/write

API.go

@@ -44,6 +44,9 @@ func startAPI() {
 	router.HandleFunc("/blockchain/self/read", apiBlockchainSelfRead).Methods("GET")
 	router.HandleFunc("/blockchain/self/add/file", apiBlockchainSelfAddFile).Methods("POST")
 	router.HandleFunc("/blockchain/self/list/file", apiBlockchainSelfListFile).Methods("GET")
+	router.HandleFunc("/profile/list", apiProfileList).Methods("GET")
+	router.HandleFunc("/profile/read", apiProfileRead).Methods("GET")
+	router.HandleFunc("/profile/write", apiProfileWrite).Methods("POST")
 
 	for _, listen := range config.APIListen {
 		go startWebServer(listen, config.APIUseSSL, config.APICertificateFile, config.APICertificateKey, router, "API", parseDuration(config.APITimeoutRead), parseDuration(config.APITimeoutWrite))
@@ -429,6 +432,96 @@ func apiBlockchainSelfListFile(w http.ResponseWriter, r *http.Request) {
 	apiEncodeJSON(w, r, result)
 }
 
+// --- Profile API ---
+
+// apiProfileData contains profile metadata stored on the blockchain. Any data is treated as untrusted and unverified by default.
+type apiProfileData struct {
+	Fields []apiBlockRecordProfileField `json:"fields"` // All fields
+	Blobs  []apiBlockRecordProfileBlob  `json:"blobs"`  // All blobs
+	Status int                          `json:"status"` // Status of the operation, only used when this structure is returned from the API. See core.BlockchainStatusX.
+}
+
+/*
+apiProfileList lists all users profile fields and blobs.
+
+Request:    GET /profile/list
+Response:   200 with JSON structure apiProfileData
+*/
+func apiProfileList(w http.ResponseWriter, r *http.Request) {
+	fields, blobs, status := core.UserProfileList()
+
+	result := apiProfileData{Status: status}
+	for n := range fields {
+		result.Fields = append(result.Fields, apiBlockRecordProfileField{Type: fields[n].Type, Text: fields[n].Text})
+	}
+	for n := range blobs {
+		result.Blobs = append(result.Blobs, apiBlockRecordProfileBlob{Type: blobs[n].Type, Data: blobs[n].Data})
+	}
+
+	apiEncodeJSON(w, r, result)
+}
+
+/*
+apiProfileRead reads a specific users profile field or blob.
+For the index see core.ProfileFieldX and core.ProfileBlobX constants.
+
+Request:    GET /profile/read?field=[index] or &blob=[index]
+Response:   200 with JSON structure apiProfileData
+*/
+func apiProfileRead(w http.ResponseWriter, r *http.Request) {
+	r.ParseForm()
+	fieldN, err1 := strconv.Atoi(r.Form.Get("field"))
+	blobN, err2 := strconv.Atoi(r.Form.Get("blob"))
+
+	if (err1 != nil && err2 != nil) || (err1 == nil && fieldN < 0) || (err2 == nil && blobN < 0) {
+		http.Error(w, "", http.StatusBadRequest)
+		return
+	}
+
+	var result apiProfileData
+
+	if err1 == nil {
+		var text string
+		if text, result.Status = core.UserProfileReadField(uint16(fieldN)); result.Status == core.BlockchainStatusOK {
+			result.Fields = append(result.Fields, apiBlockRecordProfileField{Type: uint16(fieldN), Text: text})
+		}
+	} else {
+		var data []byte
+		if data, result.Status = core.UserProfileReadBlob(uint16(blobN)); result.Status == core.BlockchainStatusOK {
+			result.Blobs = append(result.Blobs, apiBlockRecordProfileBlob{Type: uint16(blobN), Data: data})
+		}
+	}
+
+	apiEncodeJSON(w, r, result)
+}
+
+/*
+apiProfileWrite writes a specific users profile field or blob.
+For the index see core.ProfileFieldX and core.ProfileBlobX constants.
+
+Request:    POST /profile/write with JSON structure apiProfileData
+Response:   200 with JSON structure apiBlockchainBlockStatus
+*/
+func apiProfileWrite(w http.ResponseWriter, r *http.Request) {
+	var input apiProfileData
+	if err := apiDecodeJSON(w, r, &input); err != nil {
+		return
+	}
+
+	var profile core.BlockRecordProfile
+
+	for n := range input.Fields {
+		profile.Fields = append(profile.Fields, core.BlockRecordProfileField{Type: input.Fields[n].Type, Text: input.Fields[n].Text})
+	}
+	for n := range input.Blobs {
+		profile.Blobs = append(profile.Blobs, core.BlockRecordProfileBlob{Type: input.Blobs[n].Type, Data: input.Blobs[n].Data})
+	}
+
+	newHeight, status := core.UserProfileWrite(profile)
+
+	apiEncodeJSON(w, r, apiBlockchainBlockStatus{Status: status, Height: newHeight})
+}
+
 // --- conversion from core to API data ---
 
 func isFileTagKnownMetadata(tagType uint16) bool {