diff -r ddcdedd3330b -r 2bc61f8841a1 project_files/frontlib/ipc/ipcprotocol.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/frontlib/ipc/ipcprotocol.c	Sun Oct 28 15:12:37 2012 +0100
@@ -0,0 +1,316 @@
+/*
+ * Hedgewars, a free turn based strategy game
+ * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "ipcprotocol.h"
+#include "../util/util.h"
+#include "../util/logging.h"
+#include "../md5/md5.h"
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <inttypes.h>
+#include <stdlib.h>
+
+int flib_ipc_append_message(flib_vector *vec, const char *fmt, ...) {
+	int result = -1;
+	if(!log_badargs_if2(vec==NULL, fmt==NULL)) {
+		// 1 byte size prefix, 255 bytes max message length, 1 0-byte for vsnprintf
+		char msgbuffer[257];
+
+		// Format the message, leaving one byte at the start for the length
+		va_list argp;
+		va_start(argp, fmt);
+		int msgSize = vsnprintf(msgbuffer+1, 256, fmt, argp);
+		va_end(argp);
+
+		if(!log_e_if(msgSize > 255, "Message too long (%u bytes)", (unsigned)msgSize)
+				&& !log_e_if(msgSize < 0, "printf error")) {
+			// Add the length prefix
+			((uint8_t*)msgbuffer)[0] = msgSize;
+
+			// Append it to the vector
+			result = flib_vector_append(vec, msgbuffer, msgSize+1);
+		}
+	}
+	return result;
+}
+
+int flib_ipc_append_mapconf(flib_vector *vec, const flib_map *map, bool mappreview) {
+	int result = -1;
+	flib_vector *tempvector = flib_vector_create();
+	if(!log_badargs_if2(vec==NULL, map==NULL)) {
+		bool error = false;
+
+		if(map->mapgen == MAPGEN_NAMED) {
+			error |= log_e_if(!map->name, "Missing map name")
+					|| flib_ipc_append_message(tempvector, "emap %s", map->name);
+		}
+		if(!mappreview) {
+			error |= log_e_if(!map->theme, "Missing map theme")
+					|| flib_ipc_append_message(tempvector, "etheme %s", map->theme);
+		}
+		error |= flib_ipc_append_seed(tempvector, map->seed);
+		error |= flib_ipc_append_message(tempvector, "e$template_filter %i", map->templateFilter);
+		error |= flib_ipc_append_message(tempvector, "e$mapgen %i", map->mapgen);
+
+		if(map->mapgen == MAPGEN_MAZE) {
+			error |= flib_ipc_append_message(tempvector, "e$maze_size %i", map->mazeSize);
+		}
+		if(map->mapgen == MAPGEN_DRAWN) {
+			/*
+			 * We have to split the drawn map data into several edraw messages here because
+			 * it can be longer than the maximum message size.
+			 */
+			const char *edraw = "edraw ";
+			int edrawlen = strlen(edraw);
+			for(size_t offset=0; offset<map->drawDataSize; offset+=200) {
+				size_t bytesRemaining = map->drawDataSize-offset;
+				int fragmentsize = bytesRemaining < 200 ? bytesRemaining : 200;
+				uint8_t messagesize = edrawlen + fragmentsize;
+				error |= flib_vector_append(tempvector, &messagesize, 1);
+				error |= flib_vector_append(tempvector, edraw, edrawlen);
+				error |= flib_vector_append(tempvector, map->drawData+offset, fragmentsize);
+			}
+		}
+
+		if(!log_e_if(error, "Error generating map config")) {
+			// Message created, now we can copy everything.
+			flib_constbuffer constbuf = flib_vector_as_constbuffer(tempvector);
+			if(!flib_vector_append(vec, constbuf.data, constbuf.size)) {
+				result = 0;
+			}
+		}
+	}
+	flib_vector_destroy(tempvector);
+	return result;
+}
+
+int flib_ipc_append_seed(flib_vector *vec, const char *seed) {
+	if(log_badargs_if2(vec==NULL, seed==NULL)) {
+		return -1;
+	}
+	return flib_ipc_append_message(vec, "eseed %s", seed);
+}
+
+int flib_ipc_append_script(flib_vector *vec, const char *script) {
+	int result = -1;
+	if(!log_badargs_if2(vec==NULL, script==NULL)) {
+		result = flib_ipc_append_message(vec, "escript %s", script);
+	}
+	return result;
+}
+
+int flib_ipc_append_style(flib_vector *vec, const char *style) {
+	int result = -1;
+	char *copy = flib_strdupnull(style);
+	if(!log_badargs_if(vec==NULL) && copy) {
+		if(!strcmp("Normal", copy)) {
+			// "Normal" means no gametype script
+			// TODO if an empty script called "Normal" is added to the scripts directory this can be removed
+			result = 0;
+		} else {
+			size_t len = strlen(copy);
+			for(size_t i=0; i<len; i++) {
+				if(copy[i] == ' ') {
+					copy[i] = '_';
+				}
+			}
+
+			result = flib_ipc_append_message(vec, "escript %s%s.lua", MULTIPLAYER_SCRIPT_PATH, copy);
+		}
+	}
+	free(copy);
+	return result;
+}
+
+static uint32_t buildModFlags(const flib_scheme *scheme) {
+	uint32_t result = 0;
+	for(int i=0; i<flib_meta.modCount; i++) {
+		if(scheme->mods[i]) {
+			int bitmaskIndex = flib_meta.mods[i].bitmaskIndex;
+			result |= (UINT32_C(1) << bitmaskIndex);
+		}
+	}
+	return result;
+}
+
+int flib_ipc_append_gamescheme(flib_vector *vec, const flib_scheme *scheme) {
+	int result = -1;
+	flib_vector *tempvector = flib_vector_create();
+	if(!log_badargs_if2(vec==NULL, scheme==NULL) && tempvector) {
+		bool error = false;
+		error |= flib_ipc_append_message(tempvector, "e$gmflags %"PRIu32, buildModFlags(scheme));
+		for(int i=0; i<flib_meta.settingCount; i++) {
+			if(flib_meta.settings[i].engineCommand) {
+				int value = scheme->settings[i];
+				if(flib_meta.settings[i].maxMeansInfinity) {
+					value = value>=flib_meta.settings[i].max ? 9999 : value;
+				}
+				if(flib_meta.settings[i].times1000) {
+					value *= 1000;
+				}
+				error |= flib_ipc_append_message(tempvector, "%s %i", flib_meta.settings[i].engineCommand, value);
+			}
+		}
+
+		if(!error) {
+			// Message created, now we can copy everything.
+			flib_constbuffer constbuf = flib_vector_as_constbuffer(tempvector);
+			if(!flib_vector_append(vec, constbuf.data, constbuf.size)) {
+				result = 0;
+			}
+		}
+	}
+	flib_vector_destroy(tempvector);
+	return result;
+}
+
+static int appendWeaponSet(flib_vector *vec, flib_weaponset *set) {
+	return flib_ipc_append_message(vec, "eammloadt %s", set->loadout)
+		|| flib_ipc_append_message(vec, "eammprob %s", set->crateprob)
+		|| flib_ipc_append_message(vec, "eammdelay %s", set->delay)
+		|| flib_ipc_append_message(vec, "eammreinf %s", set->crateammo);
+}
+
+static void calculateMd5Hex(const char *in, char out[33]) {
+	md5_state_t md5state;
+	uint8_t md5bytes[16];
+	md5_init(&md5state);
+	md5_append(&md5state, (unsigned char*)in, strlen(in));
+	md5_finish(&md5state, md5bytes);
+	for(int i=0;i<sizeof(md5bytes); i++) {
+		snprintf(out+i*2, 3, "%02x", (unsigned)md5bytes[i]);
+	}
+}
+
+static int flib_ipc_append_addteam(flib_vector *vec, const flib_team *team, bool perHogAmmo, bool noAmmoStore) {
+	int result = -1;
+	flib_vector *tempvector = flib_vector_create();
+	if(!log_badargs_if2(vec==NULL, team==NULL) && tempvector) {
+		bool error = false;
+
+		if(!perHogAmmo && !noAmmoStore) {
+			error = error
+					|| appendWeaponSet(tempvector, team->hogs[0].weaponset)
+					|| flib_ipc_append_message(tempvector, "eammstore");
+		}
+
+		char md5Hex[33];
+		calculateMd5Hex(team->ownerName ? team->ownerName : "", md5Hex);
+		if(team->colorIndex<0 || team->colorIndex>=flib_teamcolor_count) {
+			flib_log_e("Color index out of bounds for team %s: %i", team->name, team->colorIndex);
+			error = true;
+		} else {
+			error |= flib_ipc_append_message(tempvector, "eaddteam %s %"PRIu32" %s", md5Hex, flib_teamcolors[team->colorIndex], team->name);
+		}
+
+		if(team->remoteDriven) {
+			error |= flib_ipc_append_message(tempvector, "erdriven");
+		}
+
+		error |= flib_ipc_append_message(tempvector, "egrave %s", team->grave);
+		error |= flib_ipc_append_message(tempvector, "efort %s", team->fort);
+		error |= flib_ipc_append_message(tempvector, "evoicepack %s", team->voicepack);
+		error |= flib_ipc_append_message(tempvector, "eflag %s", team->flag);
+
+		for(int i=0; i<team->bindingCount; i++) {
+			error |= flib_ipc_append_message(tempvector, "ebind %s %s", team->bindings[i].binding, team->bindings[i].action);
+		}
+
+		for(int i=0; i<team->hogsInGame; i++) {
+			if(perHogAmmo && !noAmmoStore) {
+				error |= appendWeaponSet(tempvector, team->hogs[i].weaponset);
+			}
+			error |= flib_ipc_append_message(tempvector, "eaddhh %i %i %s", team->hogs[i].difficulty, team->hogs[i].initialHealth, team->hogs[i].name);
+			error |= flib_ipc_append_message(tempvector, "ehat %s", team->hogs[i].hat);
+		}
+
+		if(!error) {
+			// Message created, now we can copy everything.
+			flib_constbuffer constbuf = flib_vector_as_constbuffer(tempvector);
+			if(!flib_vector_append(vec, constbuf.data, constbuf.size)) {
+				result = 0;
+			}
+		}
+	}
+	flib_vector_destroy(tempvector);
+	return result;
+}
+
+int flib_ipc_append_fullconfig(flib_vector *vec, const flib_gamesetup *setup, bool netgame) {
+	int result = -1;
+	flib_vector *tempvector = flib_vector_create();
+	if(!log_badargs_if2(vec==NULL, setup==NULL) && tempvector) {
+		bool error = false;
+		bool perHogAmmo = false;
+		bool sharedAmmo = false;
+
+		error |= flib_ipc_append_message(vec, netgame ? "TN" : "TL");
+		if(setup->map) {
+			error |= flib_ipc_append_mapconf(tempvector, setup->map, false);
+		}
+		if(setup->style) {
+			error |= flib_ipc_append_style(tempvector, setup->style);
+		}
+		if(setup->gamescheme) {
+			error |= flib_ipc_append_gamescheme(tempvector, setup->gamescheme);
+			sharedAmmo = flib_scheme_get_mod(setup->gamescheme, "sharedammo");
+			// Shared ammo has priority over per-hog ammo
+			perHogAmmo = !sharedAmmo && flib_scheme_get_mod(setup->gamescheme, "perhogammo");
+		}
+		if(setup->teamlist->teams && setup->teamlist->teamCount>0) {
+			int *clanColors = flib_calloc(setup->teamlist->teamCount, sizeof(int));
+			if(!clanColors) {
+				error = true;
+			} else {
+				int clanCount = 0;
+				for(int i=0; !error && i<setup->teamlist->teamCount; i++) {
+					flib_team *team = setup->teamlist->teams[i];
+					// Find the clan index of this team (clans are identified by color).
+					bool newClan = false;
+					int clan = 0;
+					while(clan<clanCount && clanColors[clan] != team->colorIndex) {
+						clan++;
+					}
+					if(clan==clanCount) {
+						newClan = true;
+						clanCount++;
+						clanColors[clan] = team->colorIndex;
+					}
+
+					// If shared ammo is active, only add an ammo store for the first team in each clan.
+					bool noAmmoStore = sharedAmmo&&!newClan;
+					error |= flib_ipc_append_addteam(tempvector, setup->teamlist->teams[i], perHogAmmo, noAmmoStore);
+				}
+			}
+			free(clanColors);
+		}
+		error |= flib_ipc_append_message(tempvector, "!");
+
+		if(!error) {
+			// Message created, now we can copy everything.
+			flib_constbuffer constbuf = flib_vector_as_constbuffer(tempvector);
+			if(!flib_vector_append(vec, constbuf.data, constbuf.size)) {
+				result = 0;
+			}
+		}
+	}
+	return result;
+}