Fix displaying contact name

This commit also has some other changes sprinkled in but the main
effect is that messages are only shown precisely once. Next stage must
be to move away from serv_got_im and friends.

README.md

@@ -19,8 +19,14 @@ mobile clients to send and receive IMs over SMTP+IMAP. It may be useful for
 GUI desktop usage **without** an Electron dependency, or console desktop usage.
 
 Current status is probably best described as "skunkworks", although connecting
-to an account and sending / receiving text messages should work reliably. You
-can view specific progress on [the issue board](https://gitlab.com/lupine/purple-plugin-delta/boards).
+to an account and sending / receiving text and image messages should work
+reliably in pidgin. Chatty supports text messages, and can be coaxed into using
+this plugin, but there's a long way to go with that yet.
+
+A big refactoring to use "proper" purple IM structures is necessary to make
+further progress, I think.
+
+I also need to implement support for the buddy list.
 
 We currrently build against deltachat v1.50.0. You'll need to build and install
 deltachat-ffi separately and ensure that it's available via `pkg-config` for

delta-connection.c

@@ -12,7 +12,9 @@
 #include "delta-connection.h"
 #include "libdelta.h"
 
-void delta_recv_im(DeltaConnectionData *conn, uint32_t msg_id);
+#define IMEX_RECEIVED_MESSAGE "Setup message received. To apply it, reply with:\nIMEX: %d nnnn-nnnn-nnnn-nnnn-nnnn-nnnn-nnnn-nnnn-nnnn\nNo whitespace in the setup-code!"
+
+void delta_recv_im(DeltaConnectionData *conn, dc_msg_t *msg);
 
 void
 _transpose_config(dc_context_t *mailbox, PurpleAccount *acct)
@@ -30,6 +32,8 @@ _transpose_config(dc_context_t *mailbox, PurpleAccount *acct)
 	const char *smtp_pass = purple_account_get_string(acct, PLUGIN_ACCOUNT_OPT_SMTP_PASS, NULL);
 	const char *smtp_port = purple_account_get_string(acct, PLUGIN_ACCOUNT_OPT_SMTP_SERVER_PORT, NULL);
 
+	gboolean bcc_self = purple_account_get_bool(acct, PLUGIN_ACCOUNT_OPT_BCC_SELF, FALSE);
+
 	dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_ADDR, addr);
 	dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_DISPLAY_NAME, display);
 
@@ -42,6 +46,12 @@ _transpose_config(dc_context_t *mailbox, PurpleAccount *acct)
 	dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_SMTP_USER, smtp_user);
 	dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_SMTP_PASS, smtp_pass);
 	dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_SMTP_SERVER_PORT, smtp_port);
+
+	if (bcc_self) {
+		dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_BCC_SELF, "1");
+	} else {
+		dc_set_config(mailbox, PLUGIN_ACCOUNT_OPT_BCC_SELF, "0");
+	};
 }
 
 typedef struct {
@@ -49,9 +59,10 @@ typedef struct {
 
 	// Used by delta_process_incoming_message
 	uint32_t msg_id;
+	gboolean msg_changed;
 
 	// Used by delta_process_connection_state
-	int connection_state;
+	// int connection_state;
 } ProcessRequest;
 
 gboolean
@@ -61,13 +72,14 @@ delta_process_incoming_message(void *data)
 	g_assert(pr != NULL);
 	g_assert(pr->conn != NULL);
 
-	delta_recv_im(pr->conn, pr->msg_id);
-
+	dc_msg_t *msg = dc_get_msg(pr->conn->mailbox, pr->msg_id);
+	delta_recv_im(pr->conn, msg);
+	dc_msg_unref(msg);
 	g_free(data);
 
 	return FALSE;
 }
-
+/*
 gboolean
 delta_process_connection_state(void *data)
 {
@@ -83,33 +95,38 @@ delta_process_connection_state(void *data)
 	);
 
 	if (pr->connection_state == MAX_DELTA_CONFIGURE) {
-		purple_connection_set_state(pr->conn->pc, PURPLE_CONNECTED);
+
 	}
 
 	g_free(data);
 
 	return FALSE;
 }
-
+*/
 gboolean
 delta_process_fresh_messages(void *data)
 {
 	ProcessRequest *pr = (ProcessRequest *)data;
 	g_assert(pr != NULL);
 	g_assert(pr->conn != NULL);
-	g_assert(pr->conn->mailbox != NULL);
+
+	dc_context_t *mailbox = pr->conn->mailbox;
+	g_assert(mailbox != NULL);
 
 	// Spot any messages received while offline
-	dc_array_t *fresh_msgs = dc_get_fresh_msgs(pr->conn->mailbox);
+	dc_array_t *fresh_msgs = dc_get_fresh_msgs(mailbox);
 	size_t fresh_count = dc_array_get_cnt(fresh_msgs);
 
 	purple_debug_info(PLUGIN_ID, "fresh_count: %zu\n", fresh_count);
 
 	for(size_t i = 0; i < fresh_count; i++) {
-		delta_recv_im(pr->conn, dc_array_get_id(fresh_msgs, i));
+		uint32_t msg_id = dc_array_get_id(fresh_msgs, i);
+		dc_msg_t *msg = dc_get_msg(mailbox, msg_id);
+
+		delta_recv_im(pr->conn, msg);
 	}
 
-	g_free(fresh_msgs);
+	dc_array_unref(fresh_msgs);
 
 	return FALSE;
 }
@@ -141,8 +158,6 @@ delta_event_handler(void *context)
 	dc_event_emitter_t* emitter = dc_get_event_emitter(mailbox);
 	dc_event_t* event;
 
-
-
 	// FIXME: do we still need runthreads?
 	while (conn->runthreads && (event = dc_get_next_event(emitter)) != NULL) {
 		ProcessRequest *pr = NULL;
@@ -168,8 +183,7 @@ delta_event_handler(void *context)
 			dc_str_unref(warn);
 			break;
 		}
-		case DC_EVENT_ERROR:
-		case DC_EVENT_ERROR_NETWORK: {
+		case DC_EVENT_ERROR: {
 			int errcode = dc_event_get_data1_int(event);
 			char *err = dc_event_get_data2_str(event);
 			purple_debug_info(PLUGIN_ID, "ERROR from Delta: %d: %s\n", errcode, err);
@@ -177,10 +191,25 @@ delta_event_handler(void *context)
 			break;
 		}
 
-		case DC_EVENT_MSGS_CHANGED:
+		case DC_EVENT_MSGS_CHANGED: {
+			// This event may be issued for a single message, in which case the
+			// message ID is in data2 and we should treat it as an incoming msg
+			// FIXME: this leads to duplicate messages when it's an outgoing
+			// message we just sent
+			uint32_t msg_id = dc_event_get_data2_int(event);
+
 			pr = delta_build_process_request(conn);
-			purple_timeout_add(0, delta_process_fresh_messages, pr);
+			if (msg_id) {
+				// FIXME: for now, only display IMEX setup messages to avoid duplicates
+				pr->msg_id = msg_id;
+				pr->msg_changed = TRUE;
+
+				purple_timeout_add(0, delta_process_incoming_message, pr);
+			} else {
+				purple_timeout_add(0, delta_process_fresh_messages, pr);
+			}
 			break;
+		}
 
 		case DC_EVENT_INCOMING_MSG:
 			// data1 is chat_id, which we don't seem to need yet.
@@ -210,9 +239,10 @@ delta_event_handler(void *context)
 			break;
 
 		case DC_EVENT_CONFIGURE_PROGRESS:
-			pr = delta_build_process_request(conn);
-			pr->connection_state = dc_event_get_data1_int(event);
-			purple_timeout_add(0, delta_process_connection_state, pr);
+			//pr = delta_build_process_request(conn);
+			//pr->connection_state = dc_event_get_data1_int(event);
+			//purple_timeout_add(0, delta_process_connection_state, pr);
+			purple_debug_info(PLUGIN_ID, "Configure progress: %d\n", dc_event_get_data1_int(event));
 			break;
 
 		default:
@@ -294,9 +324,30 @@ delta_connection_start_login(PurpleConnection *pc)
 	dc_start_io(mailbox);
 	dc_maybe_network(mailbox);
 
+	purple_connection_set_state(pc, PURPLE_CONNECTED);
+
 	return;
 }
 
+gboolean delta_try_process_imex(dc_context_t *mailbox, char *text) {
+	if (!g_str_has_prefix(text, "IMEX: ")) {
+		return FALSE;
+	}
+
+	gchar **parts = g_strsplit(text, " ", 3);
+	if (g_strv_length(parts) != 3) {
+		g_strfreev(parts);
+		return FALSE;
+	}
+
+	int msg_id = atoi(parts[1]);
+	gboolean success = dc_continue_key_transfer(mailbox, msg_id, parts[2]);
+
+	g_strfreev(parts);
+
+	return success;
+}
+
 int
 delta_send_im(PurpleConnection *pc, const char *who, const char *message, PurpleMessageFlags flags)
 {
@@ -373,15 +424,17 @@ next:
 	char *stripped_message = purple_markup_strip_html(message);
 	g_assert(stripped_message != NULL);
 	if (strlen(stripped_message) > 0) {
-		dc_send_text_msg(mailbox, chat_id, stripped_message);
+		if (!delta_try_process_imex(mailbox, stripped_message)) {
+			dc_send_text_msg(mailbox, chat_id, stripped_message);
+		}
 	}
 	g_free(stripped_message);
 
-	return 1; // success; echo the message to the chat window
+	return 0; // success; don't echo the message to the chat window since we display it anyway
 }
 
 void
-delta_recv_im(DeltaConnectionData *conn, uint32_t msg_id)
+delta_recv_im(DeltaConnectionData *conn, dc_msg_t *msg)
 {
 	dc_context_t *mailbox = conn->mailbox;
 	g_assert(mailbox != NULL);
@@ -389,24 +442,69 @@ delta_recv_im(DeltaConnectionData *conn, uint32_t msg_id)
 	PurpleConnection *pc = conn->pc;
 	g_assert(pc != NULL);
 
-	dc_msg_t* msg = dc_get_msg(mailbox, msg_id);
+	uint32_t msg_id = dc_msg_get_id(msg);
 	int viewtype = dc_msg_get_viewtype(msg);
 	time_t timestamp = dc_msg_get_timestamp(msg);
 	char *text = dc_msg_get_text(msg);
-	uint32_t contact_id  = dc_msg_get_from_id(msg);
+	uint32_t chat_id = dc_msg_get_chat_id(msg);
+	dc_contact_t *from = dc_get_contact(mailbox, dc_msg_get_from_id(msg));
+	dc_chat_t *chat = dc_get_chat(mailbox, chat_id);
+	dc_array_t *contacts = dc_get_chat_contacts(mailbox, chat_id);
+	int num_contacts = dc_array_get_cnt(contacts);
 
-	dc_contact_t *contact = dc_get_contact(mailbox, contact_id);
-	if (contact == NULL) {
-		purple_debug_info(PLUGIN_ID, "Receiving IM: unknown contact: %d\n", contact_id);
+	if (chat == NULL) {
+		purple_debug_info(PLUGIN_ID, "Receiving IM: unknown chat: %d\n", chat_id);
 		goto out;
 	}
 
-	char *who = dc_contact_get_addr(contact);
-	int flags = PURPLE_MESSAGE_RECV;
+	if (dc_chat_get_type(chat) == DC_CHAT_TYPE_GROUP) {
+		purple_debug_info(PLUGIN_ID, "Receiving IM: group chat with ID %d! Not yet supported\n", chat_id);
+		goto out;
+	}
+
+	if (num_contacts != 1) {
+		purple_debug_info(PLUGIN_ID, "Receiving IM: 1-1 chat %d with %d contacts instead of 1!\n", chat_id, num_contacts);
+		goto out;
+	}
+
+	// FIXME: using dc_array_get_contact_id fails here, complaining that it's not an array of locations
+	dc_contact_t *contact = dc_get_contact(mailbox, dc_array_get_id(contacts, 0));
+	char *who = NULL;
+
+	// In the current architecture, delta_send_im and delta_recv_im must agree
+	// on the value for 'who'. Using the email address is an easy cheat for this
+	// but gets shaky in the long term.
+	if (contact != NULL) {
+		who = dc_contact_get_addr(contact);
+	} else {
+		who = dc_chat_get_name(chat);
+	}
+
+	int flags = 0;
+	int state = dc_msg_get_state(msg);
+
+	if (state == DC_STATE_IN_FRESH || state == DC_STATE_IN_NOTICED || state == DC_STATE_IN_SEEN) {
+		flags |= PURPLE_MESSAGE_RECV;
+	} else {
+		flags |= PURPLE_MESSAGE_SEND;
+	}
+
+	// FIXME: as a massive hack, convert IMEX setup messages into a text message
+	// prompting the user how to trigger the IMEX filter in outgoing messages.
+	if (dc_msg_is_setupmessage(msg)) {
+		purple_debug_info(PLUGIN_ID, "Receiving IMEX: ID=%d\n", msg_id);
+		viewtype = DC_MSG_TEXT;
+		dc_str_unref(text);
+		text = g_strndup("", 1024);
+		g_assert(text != NULL);
+
+		g_snprintf(text, 1024, IMEX_RECEIVED_MESSAGE, msg_id);
+	}
 
 	switch(viewtype) {
 	case DC_MSG_GIF:
 	case DC_MSG_IMAGE:
+	case DC_MSG_STICKER:
 		flags = flags | PURPLE_MESSAGE_IMAGES;
 		break;
 	case DC_MSG_TEXT:
@@ -437,18 +535,28 @@ delta_recv_im(DeltaConnectionData *conn, uint32_t msg_id)
 		}
 
 		image_id = purple_imgstore_add_with_id(data, length, filename);
-		text = g_strdup_printf("<img id='%d'>", image_id);
+		text = g_strdup_printf("<img id='%d'><br/>%s", image_id, text);
 	}
 
-	serv_got_im(pc, who, text, flags, timestamp);
+	char *name = dc_contact_get_display_name(from);
+	int msglen = strlen(name) + 3 + strlen(text);
+
+	char *msgtext = malloc(msglen);
+	g_snprintf(msgtext, msglen, "%s: %s", name, text);
+
+	serv_got_im(pc, who, msgtext, flags, timestamp);
 
 	if (image_id > 0) {
 		purple_imgstore_unref_by_id(image_id);
 	}
 
 	dc_markseen_msgs(mailbox, &msg_id, 1);
-	g_free(who);
+	g_free(msgtext);
+	dc_str_unref(who);
+	dc_str_unref(name);
+	dc_contact_unref(contact);
 out:
-	g_free(text);
-	dc_msg_unref(msg);
+	dc_str_unref(text);
+	dc_chat_unref(chat);
+	dc_array_unref(contacts);
 }

delta-connection.h

@@ -2,7 +2,7 @@
 #define DELTA_CONNECTION_H
 
 #include <glib.h>
-#include <deltachat/deltachat.h>
+#include <deltachat.h>
 #include <pthread.h>
 
 struct _PurpleConnection;

libdelta.c

@@ -72,6 +72,12 @@ pwd_opt(const char *text, const char *name, const char *def)
 	return option;
 }
 
+static PurpleAccountOption *
+bool_opt(const char *text, const char *name, const gboolean def)
+{
+	return purple_account_option_bool_new(text, name, def);
+}
+
 static void
 delta_init_plugin(PurplePlugin *plugin)
 {
@@ -98,6 +104,8 @@ delta_init_plugin(PurplePlugin *plugin)
 	// Not exposed: server_flags, selfstatus, e2ee_enabled
 	// https://deltachat.github.io/api/classmrmailbox__t.html
 
+	opts = g_list_prepend(opts, bool_opt("Send copy to self", PLUGIN_ACCOUNT_OPT_BCC_SELF, FALSE));
+
 	extra->protocol_options = g_list_reverse(opts);
 }
 
@@ -197,7 +205,11 @@ static PurplePluginProtocolInfo extra_info =
     NULL,                                  /* set_public_alias */
     NULL,                                  /* get_public_alias */
     NULL,                                  /* add_buddy_with_invite */
-    NULL                                   /* add_buddies_with_invite */
+    NULL,                                  /* add_buddies_with_invite */
+    // 2.14
+    NULL, /* get_cb_alias */
+    NULL, /* chat_can_send_file */
+    NULL /* some send file */
 };
 
 

libdelta.h

@@ -8,7 +8,8 @@
 #define DELTA_PROTOCOL_OPTS \
 	OPT_PROTO_UNIQUE_CHATNAME | \
 	OPT_PROTO_CHAT_TOPIC | \
-	OPT_PROTO_IM_IMAGE
+	OPT_PROTO_IM_IMAGE | \
+	OPT_PROTO_MAIL_CHECK
 
 // These two will instead be the pidgin "username" and "password" options that
 // I can't seem to get rid of.
@@ -27,6 +28,8 @@
 #define PLUGIN_ACCOUNT_OPT_SMTP_USER        "send_user"
 #define PLUGIN_ACCOUNT_OPT_SMTP_PASS        "send_pw"
 
+#define PLUGIN_ACCOUNT_OPT_BCC_SELF         "bcc_self"
+
 #define UNUSED(x) (void)(x)
 
 #endif