The detomatix cart now sends forged messages that make PDAs explode if one tries to reply to them instead of detonating them right off the bat.

code/__DEFINES/devices.dm

@@ -19,6 +19,9 @@
 // Used by PDA and cartridge code to reduce repetitiveness of spritesheets
 #define PDAIMG(what) {"<span class="pda16x16 [#what]"></span>"}
 
+// Used to stringify message targets before sending the signal datum.
+#define STRINGIFY_PDA_TARGET(name, job) "[name] ([job])"
+
 //N-spect scanner defines
 #define INSPECTOR_PRINT_SOUND_MODE_NORMAL 1
 #define INSPECTOR_PRINT_SOUND_MODE_CLASSIC 2

code/__DEFINES/traits.dm

@@ -534,6 +534,11 @@ Remember to update _globalvars/traits.dm if you're adding/removing/renaming trai
 /// Trait applied when an integrated circuit/module becomes undupable
 #define TRAIT_CIRCUIT_UNDUPABLE "circuit_undupable"
 
+/// PDA Traits. This one makes PDAs explode if the user opens the messages menu
+#define TRAIT_PDA_MESSAGE_MENU_RIGGED "pda_message_menu_rigged"
+/// This one denotes a PDA has received a rigged message and will explode when the user tries to reply to a rigged PDA message
+#define TRAIT_PDA_CAN_EXPLODE "pda_can_explode"
+
 /// If present on a [/mob/living/carbon], will make them appear to have a medium level disease on health HUDs.
 #define TRAIT_DISEASELIKE_SEVERITY_MEDIUM "diseaselike_severity_medium"
 

code/game/machinery/computer/security.dm

@@ -871,8 +871,8 @@ What a mess.*/
 										"name" = "Security Citation",
 										"job" = "Citation Server",
 										"message" = message,
-										"targets" = list("[P.owner] ([P.ownjob])"),
-										"automated" = 1
+										"targets" = list(STRINGIFY_PDA_TARGET(P.owner, P.ownjob)),
+										"automated" = TRUE
 									))
 									signal.send_to_receivers()
 									usr.log_message("(PDA: Citation Server) sent \"[message]\" to [signal.format_target()]", LOG_PDA)

code/game/machinery/telecomms/computers/message.dm

@@ -420,7 +420,7 @@
 							"name" = "[customsender]",
 							"job" = "[customjob]",
 							"message" = custommessage,
-							"targets" = list("[customrecepient.owner] ([customrecepient.ownjob])")
+							"targets" = list(STRINGIFY_PDA_TARGET(customrecepient.owner, customrecepient.ownjob))
 						))
 						// this will log the signal and transmit it to the target
 						linkedServer.receive_information(signal, null)

code/game/objects/items/devices/PDA/PDA.dm

@@ -224,6 +224,10 @@ GLOBAL_LIST_EMPTY(PDAs)
 		to_chat(user, span_warning("You don't have the dexterity to do this!"))
 		return
 
+	if(HAS_TRAIT(src, TRAIT_PDA_MESSAGE_MENU_RIGGED) && mode == 2)
+		explode(user, from_message_menu = TRUE)
+		return
+
 	..()
 
 	var/datum/asset/spritesheet/assets = get_asset_datum(/datum/asset/spritesheet/simple/pda)
@@ -535,6 +539,9 @@ GLOBAL_LIST_EMPTY(PDAs)
 				if(!silent)
 					playsound(src, 'sound/machines/terminal_select.ogg', 15, TRUE)
 			if("2")//Messenger
+				if(HAS_TRAIT(src, TRAIT_PDA_MESSAGE_MENU_RIGGED))
+					explode(U, from_message_menu = TRUE)
+					return
 				mode = 2
 				if(!silent)
 					playsound(src, 'sound/machines/terminal_select.ogg', 15, TRUE)
@@ -639,6 +646,10 @@ GLOBAL_LIST_EMPTY(PDAs)
 					return
 			if("Message")
 				create_message(U, locate(href_list["target"]) in GLOB.PDAs)
+			if("Mess_us_up")
+				if(!HAS_TRAIT(src, TRAIT_PDA_CAN_EXPLODE)) //in case someone ever tries to call this with forged hrefs
+					return
+				explode(U, locate(href_list["target"]))
 
 			if("Sorting Mode")
 				sort_by_job = !sort_by_job
@@ -739,7 +750,7 @@ GLOBAL_LIST_EMPTY(PDAs)
 	update_slot_icon()
 
 
-/obj/item/pda/proc/msg_input(mob/living/U = usr)
+/obj/item/pda/proc/msg_input(mob/living/U = usr, rigged = FALSE)
 	var/t = stripped_input(U, "Please enter message", name)
 	if (!t || toff)
 		return
@@ -749,22 +760,27 @@ GLOBAL_LIST_EMPTY(PDAs)
 		t = Gibberish(t, TRUE)
 	return t
 
-/obj/item/pda/proc/send_message(mob/living/user, list/obj/item/pda/targets, everyone)
-	var/message = msg_input(user)
+/**
+ * Prompts the user to input and send a message to another PDA.
+ * the everyone arg is used for mass messaging from lawyer and captain carts.
+ * rigged for PDA bombs. fakename and fakejob for forged messages (also PDA bombs).
+ */
+/obj/item/pda/proc/send_message(mob/living/user, list/obj/item/pda/targets, everyone = FALSE, rigged = FALSE, fakename, fakejob)
+	var/message = msg_input(user, rigged)
 	if(!message || !targets.len)
-		return
+		return FALSE
 	if((last_text && world.time < last_text + 10) || (everyone && last_everyone && world.time < last_everyone + PDA_SPAM_DELAY))
-		return
+		return FALSE
 
 	var/list/filter_result = is_ic_filtered_for_pdas(message)
 	if (filter_result)
 		REPORT_CHAT_FILTER_TO_USER(user, filter_result)
-		return
+		return FALSE
 
 	var/list/soft_filter_result = is_soft_ic_filtered_for_pdas(message)
 	if (soft_filter_result)
 		if(tgui_alert(usr,"Your message contains \"[soft_filter_result[CHAT_FILTER_INDEX_WORD]]\". \"[soft_filter_result[CHAT_FILTER_INDEX_REASON]]\", Are you sure you want to send it?", "Soft Blocked Word", list("Yes", "No")) != "Yes")
-			return
+			return FALSE
 		message_admins("[ADMIN_LOOKUPFLW(usr)] has passed the soft filter for \"[soft_filter_result[CHAT_FILTER_INDEX_WORD]]\" they may be using a disallowed term in PDA messages. Message: \"[html_encode(message)]\"")
 		log_admin_private("[key_name(usr)] has passed the soft filter for \"[soft_filter_result[CHAT_FILTER_INDEX_WORD]]\" they may be using a disallowed term in PDA messages. Message: \"[message]\"")
 
@@ -774,23 +790,27 @@ GLOBAL_LIST_EMPTY(PDAs)
 	var/list/string_targets = list()
 	for (var/obj/item/pda/P in targets)
 		if (P.owner && P.ownjob)  // != src is checked by the UI
-			string_targets += "[P.owner] ([P.ownjob])"
+			string_targets += STRINGIFY_PDA_TARGET(P.owner, P.ownjob)
 	for (var/obj/machinery/computer/message_monitor/M in targets)
 		// In case of "Reply" to a message from a console, this will make the
 		// message be logged successfully. If the console is impersonating
 		// someone by matching their name and job, the reply will reach the
 		// impersonated PDA.
-		string_targets += "[M.customsender] ([M.customjob])"
+		string_targets += STRINGIFY_PDA_TARGET(M.customsender, M.customjob)
 	if (!string_targets.len)
-		return
+		return FALSE
 
 	var/datum/signal/subspace/messaging/pda/signal = new(src, list(
-		"name" = "[owner]",
-		"job" = "[ownjob]",
+		"name" = "[fakename || owner]",
+		"job" = "[fakejob || ownjob]",
 		"message" = message,
 		"targets" = string_targets,
 		"emojis" = allow_emojis,
+		"rigged" = rigged,
 	))
+	if(rigged) //Will skip the message server and go straight to the hub so it can't be cheesed by disabling the message server machine
+		signal.server_type = /obj/machinery/telecomms/hub
+		signal.data["reject"] = FALSE // Do not refuse the message
 	if (picture)
 		signal.data["photo"] = picture
 	signal.send_to_receivers()
@@ -800,7 +820,7 @@ GLOBAL_LIST_EMPTY(PDAs)
 		to_chat(user, span_notice("ERROR: Server isn't responding."))
 		if(!silent)
 			playsound(src, 'sound/machines/terminal_error.ogg', 15, TRUE)
-		return
+		return FALSE
 
 	var/target_text = signal.format_target()
 	if(allow_emojis)
@@ -810,12 +830,14 @@ GLOBAL_LIST_EMPTY(PDAs)
 	// Log it in our logs
 	tnote += "<i><b>&rarr; To [target_text]:</b></i><br>[signal.format_message()]<br>"
 	// Show it to ghosts
-	var/ghost_message = span_name("[owner] </span><span class='game say'>PDA Message</span> --> [span_name("[target_text]")]: <span class='message'>[signal.format_message()]")
+	var/ghost_message = span_name("[owner] </span><span class='game say'>[rigged ? "Rigged" : ""] PDA Message</span> --> [span_name("[target_text]")]: <span class='message'>[signal.format_message()]")
 	for(var/mob/M in GLOB.player_list)
 		if(isobserver(M) && (M.client?.prefs.chat_toggles & CHAT_GHOSTPDA))
 			to_chat(M, "[FOLLOW_LINK(M, user)] [ghost_message]")
 	// Log in the talk log
-	user.log_talk(message, LOG_PDA, tag="PDA: [initial(name)] to [target_text]")
+	user.log_talk(message, LOG_PDA, tag="[rigged ? "Rigged" : ""] PDA: [initial(name)] to [target_text]")
+	if(rigged)
+		log_bomber(user, "Sent a Rigged PDA message (Name: [fakename || owner]. Job: [fakejob || ownjob]) to [english_list(string_targets)] [!is_special_character(user) ? "(TRIGGED BY NON-ANTAG)" : ""]")
 	to_chat(user, span_info("PDA message sent to [target_text]: \"[message]\""))
 	if(!silent)
 		playsound(src, 'sound/machines/terminal_success.ogg', 15, TRUE)
@@ -824,9 +846,10 @@ GLOBAL_LIST_EMPTY(PDAs)
 	last_text = world.time
 	if (everyone)
 		last_everyone = world.time
+	return TRUE
 
 /obj/item/pda/proc/receive_message(datum/signal/subspace/messaging/pda/signal)
-	tnote += "<i><b>&larr; From <a href='byond://?src=[REF(src)];choice=Message;target=[REF(signal.source)]'>[signal.data["name"]]</a> ([signal.data["job"]]):</b></i><br>[signal.format_message()]<br>"
+	tnote += "<i><b>&larr; From <a href='byond://?src=[REF(src)];choice=[signal.data["rigged"] ? "Mess_us_up" : "Message"];target=[signal.data["rigged"] || REF(signal.source)]'>[signal.data["name"]]</a> ([signal.data["job"]]):</b></i><br>[signal.format_message()]<br>"
 
 	if (!silent)
 		if(HAS_TRAIT(SSstation, STATION_TRAIT_PDA_GLITCHED))
@@ -843,7 +866,7 @@ GLOBAL_LIST_EMPTY(PDAs)
 		L = get(src, /mob/living/silicon)
 
 	if(L && (L.stat == CONSCIOUS || L.stat == SOFT_CRIT))
-		var/reply = "(<a href='byond://?src=[REF(src)];choice=Message;skiprefresh=1;target=[REF(signal.source)]'>Reply</a>)"
+		var/reply = "(<a href='byond://?src=[REF(src)];choice=[signal.data["rigged"] ? "Mess_us_up" : "Message"];skiprefresh=1;target=[REF(signal.source)]'>Reply</a>)"
 		var/hrefstart
 		var/hrefend
 		if (isAI(L))
@@ -1138,10 +1161,15 @@ GLOBAL_LIST_EMPTY(PDAs)
 		notescanned = TRUE
 		to_chat(user, span_notice("Paper scanned. Saved to PDA's notekeeper.") )
 
-
-/obj/item/pda/proc/explode() //This needs tuning.
+/**
+ * Called when someone replies to a rigged PDA message. It explodes.
+ * from_message_menu : whether it's caused by the target opening the message menu too early.
+ */
+/obj/item/pda/proc/explode(mob/target, mob/bomber, from_message_menu = FALSE)
 	var/turf/T = get_turf(src)
 
+	log_bomber(bomber, "PDA-bombed", target, "as [target.p_they()] tried to [from_message_menu ? "open the PDA message menu" : "reply to the rigged PDA message"] [bomber && !is_special_character(bomber) ? "(TRIGGED BY NON-ANTAG)" : ""]")
+
 	if (ismob(loc))
 		var/mob/M = loc
 		M.show_message(span_userdanger("Your [src] explodes!"), MSG_VISUAL, span_warning("You hear a loud *pop*!"), MSG_AUDIBLE)
@@ -1155,7 +1183,6 @@ GLOBAL_LIST_EMPTY(PDAs)
 		else
 			explosion(src, devastation_range = -1, heavy_impact_range = -1, light_impact_range = 2, flash_range = 3)
 	qdel(src)
-	return
 
 /obj/item/pda/Destroy()
 	GLOB.PDAs -= src

code/game/objects/items/devices/PDA/PDA_types.dm

@@ -36,7 +36,9 @@
 	silent = TRUE
 	ttone = "silence"
 
-/obj/item/pda/mime/msg_input(mob/living/U = usr)
+/obj/item/pda/mime/msg_input(mob/living/U = usr, rigged = FALSE)
+	if(rigged)
+		return ..()
 	if(emped || toff)
 		return
 	var/emojis = emoji_sanitize(stripped_input(U, "Please enter emojis", name))

code/game/objects/items/devices/PDA/virus_cart.dm

@@ -15,7 +15,7 @@
 
 /obj/item/cartridge/virus/special(mob/living/user, list/params)
 	var/obj/item/pda/P = locate(params["target"]) in GLOB.PDAs  //Leaving it alone in case it may do something useful, I guess.
-	send_virus(P,user)
+	INVOKE_ASYNC(src, .proc/send_virus, P, user)
 
 /obj/item/cartridge/virus/clown
 	name = "\improper Honkworks 5.0 cartridge"
@@ -56,27 +56,41 @@
 	icon_state = "cart"
 	access = CART_REMOTE_DOOR
 	remote_door_id = "smindicate" //Make sure this matches the syndicate shuttle's shield/door id!! //don't ask about the name, testing.
-	charges = 4
+	charges = 6
 
-/obj/item/cartridge/virus/syndicate/send_virus(obj/item/pda/target, mob/living/U)
+/obj/item/cartridge/virus/syndicate/send_virus(obj/item/pda/target, mob/living/user)
 	if(charges <= 0)
-		to_chat(U, span_notice("Out of charges."))
+		to_chat(user, span_notice("Out of charges."))
 		return
-	if(!isnull(target) && !target.toff)
+	if(!target || target.toff)
+		to_chat(user, span_alert("PDA not found."))
+		return
+
+	var/difficulty = 0
+	if(target.cartridge)
+		difficulty += bit_count(target.cartridge.access&(CART_MEDICAL | CART_SECURITY | CART_ENGINE | CART_CLOWN | CART_JANITOR | CART_MANIFEST))
+		if(target.cartridge.access & CART_MANIFEST)
+			difficulty++ //if cartridge has manifest access it has extra snowflake difficulty
+	if(SEND_SIGNAL(target, COMSIG_PDA_CHECK_DETONATE) & COMPONENT_PDA_NO_DETONATE || prob(difficulty * 15))
+		user.show_message(span_danger("An error flashes on your [src]."), MSG_VISUAL)
 		charges--
-		var/difficulty = 0
-		if(target.cartridge)
-			difficulty += bit_count(target.cartridge.access&(CART_MEDICAL | CART_SECURITY | CART_ENGINE | CART_CLOWN | CART_JANITOR | CART_MANIFEST))
-			if(target.cartridge.access & CART_MANIFEST)
-				difficulty++ //if cartridge has manifest access it has extra snowflake difficulty
-		if(SEND_SIGNAL(target, COMSIG_PDA_CHECK_DETONATE) & COMPONENT_PDA_NO_DETONATE || prob(difficulty * 15))
-			U.show_message(span_danger("An error flashes on your [src]."), MSG_VISUAL)
-		else
-			log_bomber(U, "triggered a PDA explosion on", target, "[!is_special_character(U) ? "(TRIGGED BY NON-ANTAG)" : ""]")
-			U.show_message(span_notice("Success!"), MSG_VISUAL)
-			target.explode()
-	else
-		to_chat(U, span_alert("PDA not found."))
+		return
+
+	var/original_host = host_pda
+	var/fakename = sanitize_name(stripped_input(user, "Enter a name for the rigged message.", "Forge Message", null, MAX_NAME_LEN), allow_numbers = TRUE)
+	if(!fakename || host_pda != original_host || !user.canUseTopic(host_pda, BE_CLOSE))
+		return
+	var/fakejob = sanitize_name(stripped_input(user, "Enter a job for the rigged message.", "Forge Message", null, MAX_NAME_LEN), allow_numbers = TRUE)
+	if(!fakejob || host_pda != original_host || !user.canUseTopic(host_pda, BE_CLOSE))
+		return
+	if(charges > 0 && host_pda.send_message(user, list(target), rigged = REF(user), fakename = fakename, fakejob = fakejob))
+		charges--
+		user.show_message(span_notice("Success!"), MSG_VISUAL)
+		//Rigs the PDA to explode if they try to outsmart us by using the message function menu.
+		var/reference = REF(src)
+		ADD_TRAIT(target, TRAIT_PDA_CAN_EXPLODE, reference)
+		ADD_TRAIT(target, TRAIT_PDA_MESSAGE_MENU_RIGGED, reference)
+		addtimer(TRAIT_CALLBACK_REMOVE(target, TRAIT_PDA_MESSAGE_MENU_RIGGED, reference), 10 SECONDS)
 
 /obj/item/cartridge/virus/frame
 	name = "\improper F.R.A.M.E. cartridge"

code/modules/jobs/job_types/security_officer.dm

@@ -162,7 +162,7 @@ GLOBAL_LIST_EMPTY(security_officer_distribution)
 	if (partners.len)
 		for (var/obj/item/pda/pda as anything in GLOB.PDAs)
 			if (pda.owner in partners)
-				targets += "[pda.owner] ([pda.ownjob])"
+				targets += STRINGIFY_PDA_TARGET(pda.owner, pda.ownjob)
 
 	if (!targets.len)
 		return

code/modules/mob/living/carbon/human/human.dm

@@ -290,8 +290,8 @@
 							"name" = "Security Citation",
 							"job" = "Citation Server",
 							"message" = message,
-							"targets" = list("[P.owner] ([P.ownjob])"),
-							"automated" = 1
+							"targets" = list(STRINGIFY_PDA_TARGET(P.owner, P.ownjob)),
+							"automated" = TRUE
 						))
 						signal.send_to_receivers()
 						usr.log_message("(PDA: Citation Server) sent \"[message]\" to [signal.format_target()]", LOG_PDA)

code/modules/uplink/uplink_items.dm

@@ -994,11 +994,11 @@ GLOBAL_LIST_INIT(uplink_items, subtypesof(/datum/uplink_item))
 
 /datum/uplink_item/explosives/detomatix
 	name = "Detomatix PDA Cartridge"
-	desc = "When inserted into a personal digital assistant, this cartridge gives you four opportunities to \
-			detonate PDAs of crewmembers who have their message feature enabled. \
+	desc = "When inserted into a personal digital assistant, this cartridge gives you the opportunity to \
+			send up to six forged messages that will make PDAs of crewmembers explode when they try to reply to them. \
 			The concussive effect from the explosion will knock the recipient out for a short period, and deafen them for longer."
 	item = /obj/item/cartridge/virus/syndicate
-	cost = 6
+	cost = 4
 	restricted = TRUE
 
 /datum/uplink_item/explosives/emp