support multi-character path separators

this applies to both the IMAP PathDelimiter (which is needed by Lotus
Domino), as well as the Flatten-ed separators.

src/config.c

@@ -497,16 +497,14 @@ parse_generic_store( store_conf_t *store, conffile_t *cfg )
 	else if (!strcasecmp( "MapInbox", cfg->cmd ))
 		store->map_inbox = nfstrdup( cfg->val );
 	else if (!strcasecmp( "Flatten", cfg->cmd )) {
-		int sl = strlen( cfg->val );
-		if (sl != 1) {
-			error( "%s:%d: malformed flattened hierarchy delimiter\n", cfg->file, cfg->line );
-			cfg->err = 1;
-		} else if (cfg->val[0] == '/') {
-			error( "%s:%d: flattened hierarchy delimiter cannot be the canonical delimiter '/'\n", cfg->file, cfg->line );
-			cfg->err = 1;
-		} else {
-			store->flat_delim = cfg->val[0];
-		}
+		const char *p;
+		for (p = cfg->val; *p; p++)
+			if (*p == '/') {
+				error( "%s:%d: flattened hierarchy delimiter cannot contain the canonical delimiter '/'\n", cfg->file, cfg->line );
+				cfg->err = 1;
+				return;
+			}
+		store->flat_delim = nfstrdup( cfg->val );
 	} else {
 		error( "%s:%d: unknown keyword '%s'\n", cfg->file, cfg->line, cfg->cmd );
 		cfg->err = 1;

src/drv_imap.c

@@ -52,7 +52,7 @@ typedef struct imap_store_conf {
 	store_conf_t gen;
 	imap_server_conf_t *server;
 	unsigned use_namespace:1;
-	char delimiter;
+	char *delimiter;
 } imap_store_conf_t;
 
 typedef struct imap_message {
@@ -88,7 +88,7 @@ typedef struct imap_store {
 	/* trash folder's existence is not confirmed yet */
 	enum { TrashUnknown, TrashChecking, TrashKnown } trashnc;
 	unsigned got_namespace:1;
-	char delimiter; /* hierarchy delimiter */
+	char *delimiter; /* hierarchy delimiter */
 	list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
 	message_t **msgapp; /* FETCH results */
 	unsigned caps; /* CAPABILITY results */
@@ -913,13 +913,29 @@ parse_list_rsp( imap_store_t *ctx, list_t *list, char *cmd )
 	free_list( list );
 	arg = next_arg( &cmd );
 	if (!ctx->delimiter)
-		ctx->delimiter = *arg;
+		ctx->delimiter = nfstrdup( arg );
 	return parse_list( ctx, cmd, parse_list_rsp_p2 );
 }
 
+static int
+is_inbox( imap_store_t *ctx, const char *arg )
+{
+	int i;
+	char c;
+
+	if (memcmp( arg, "INBOX", 5 ))
+		return 0;
+	if (arg[5])
+		for (i = 0; (c = ctx->delimiter[i]); i++)
+			if (arg[i + 5] != c)
+				return 0;
+	return 1;
+}
+
 static int
 parse_list_rsp_p2( imap_store_t *ctx, list_t *list, char *cmd ATTR_UNUSED )
 {
+	string_list_t *narg;
 	char *arg;
 	int l;
 
@@ -929,12 +945,12 @@ parse_list_rsp_p2( imap_store_t *ctx, list_t *list, char *cmd ATTR_UNUSED )
 		return LIST_BAD;
 	}
 	arg = list->val;
-	if (memcmp( arg, "INBOX", 5 ) || (arg[5] && arg[5] != ctx->delimiter)) {
+	if (!is_inbox( ctx, arg )) {
 		l = strlen( ctx->gen.conf->path );
 		if (memcmp( arg, ctx->gen.conf->path, l ))
 			goto skip;
 		arg += l;
-		if (!memcmp( arg, "INBOX", 5 ) && (!arg[5] || arg[5] == ctx->delimiter)) {
+		if (is_inbox( ctx, arg )) {
 			if (!arg[5])
 				warn( "IMAP warning: ignoring INBOX in %s\n", ctx->gen.conf->path );
 			goto skip;
@@ -942,36 +958,37 @@ parse_list_rsp_p2( imap_store_t *ctx, list_t *list, char *cmd ATTR_UNUSED )
 	}
 	if (!memcmp( arg + strlen( arg ) - 5, ".lock", 5 )) /* workaround broken servers */
 		goto skip;
-	if (map_name( arg, ctx->delimiter, '/') < 0) {
+	if (map_name( arg, (char **)&narg, offsetof(string_list_t, string), ctx->delimiter, "/") < 0) {
 		warn( "IMAP warning: ignoring mailbox %s (reserved character '/' in name)\n", arg );
 		goto skip;
 	}
-	add_string_list( &ctx->gen.boxes, arg );
+	narg->next = ctx->gen.boxes;
+	ctx->gen.boxes = narg;
   skip:
 	free_list( list );
 	return LIST_OK;
 }
 
 static int
-prepare_name( char *buf, const imap_store_t *ctx, const char *prefix, const char *name )
+prepare_name( char **buf, const imap_store_t *ctx, const char *prefix, const char *name )
 {
-	int pl;
+	int pl = strlen( prefix );
 
-	nfsnprintf( buf, 1024, "%s%n%s", prefix, &pl, name );
-	switch (map_name( buf + pl, '/', ctx->delimiter )) {
+	switch (map_name( name, buf, pl, "/", ctx->delimiter )) {
 	case -1:
-		error( "IMAP error: mailbox name %s contains server's hierarchy delimiter\n", buf + pl );
+		error( "IMAP error: mailbox name %s contains server's hierarchy delimiter\n", name );
 		return -1;
 	case -2:
 		error( "IMAP error: server's hierarchy delimiter not known\n" );
 		return -1;
 	default:
+		memcpy( *buf, prefix, pl );
 		return 0;
 	}
 }
 
 static int
-prepare_box( char *buf, const imap_store_t *ctx )
+prepare_box( char **buf, const imap_store_t *ctx )
 {
 	const char *name = ctx->gen.name;
 
@@ -980,7 +997,7 @@ prepare_box( char *buf, const imap_store_t *ctx )
 }
 
 static int
-prepare_trash( char *buf, const imap_store_t *ctx )
+prepare_trash( char **buf, const imap_store_t *ctx )
 {
 	return prepare_name( buf, ctx, ctx->prefix, ctx->gen.conf->trash );
 }
@@ -1183,6 +1200,7 @@ imap_cancel_store( store_t *gctx )
 	free_list( ctx->ns_personal );
 	free_list( ctx->ns_other );
 	free_list( ctx->ns_shared );
+	free( ctx->delimiter );
 	imap_deref( ctx );
 }
 
@@ -1330,6 +1348,7 @@ imap_open_store( store_conf_t *conf,
 			ctx->gen.boxes = 0;
 			ctx->gen.listed = 0;
 			ctx->gen.conf = conf;
+			free( ctx->delimiter );
 			ctx->delimiter = 0;
 			ctx->callbacks.imap_open = cb;
 			ctx->callback_aux = aux;
@@ -1570,7 +1589,7 @@ imap_open_store_namespace( imap_store_t *ctx )
 	imap_store_conf_t *cfg = (imap_store_conf_t *)ctx->gen.conf;
 
 	ctx->prefix = cfg->gen.path;
-	ctx->delimiter = cfg->delimiter;
+	ctx->delimiter = cfg->delimiter ? nfstrdup( cfg->delimiter ) : 0;
 	if (((!*ctx->prefix && cfg->use_namespace) || !cfg->delimiter) && CAP(NAMESPACE)) {
 		/* get NAMESPACE info */
 		if (!ctx->got_namespace)
@@ -1608,7 +1627,7 @@ imap_open_store_namespace2( imap_store_t *ctx )
 		if (!*ctx->prefix && cfg->use_namespace)
 			ctx->prefix = nsp_1st_ns->val;
 		if (!ctx->delimiter)
-			ctx->delimiter = *nsp_1st_dl->val;
+			ctx->delimiter = nfstrdup( nsp_1st_dl->val );
 	}
 	imap_open_store_finalize( ctx );
 }
@@ -1656,12 +1675,12 @@ imap_select( store_t *gctx, int create,
 {
 	imap_store_t *ctx = (imap_store_t *)gctx;
 	struct imap_cmd_simple *cmd;
-	char buf[1024];
+	char *buf;
 
 	free_generic_messages( gctx->msgs );
 	gctx->msgs = 0;
 
-	if (prepare_box( buf, ctx ) < 0) {
+	if (prepare_box( &buf, ctx ) < 0) {
 		cb( DRV_BOX_BAD, aux );
 		return;
 	}
@@ -1673,6 +1692,7 @@ imap_select( store_t *gctx, int create,
 	cmd->gen.param.trycreate = 1;
 	imap_exec( ctx, &cmd->gen, imap_done_simple_box,
 	           "SELECT \"%s\"", buf );
+	free( buf );
 }
 
 /******************* imap_load *******************/
@@ -1878,17 +1898,18 @@ imap_trash_msg( store_t *gctx, message_t *msg,
 {
 	imap_store_t *ctx = (imap_store_t *)gctx;
 	struct imap_cmd_simple *cmd;
-	char buf[1024];
+	char *buf;
 
 	INIT_IMAP_CMD(imap_cmd_simple, cmd, cb, aux)
 	cmd->gen.param.create = 1;
 	cmd->gen.param.to_trash = 1;
-	if (prepare_trash( buf, ctx ) < 0) {
+	if (prepare_trash( &buf, ctx ) < 0) {
 		cb( DRV_BOX_BAD, aux );
 		return;
 	}
 	imap_exec( ctx, &cmd->gen, imap_done_simple_msg,
 	           "UID COPY %d \"%s\"", msg->uid, buf );
+	free( buf );
 }
 
 /******************* imap_store_msg *******************/
@@ -1901,8 +1922,9 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int to_trash,
 {
 	imap_store_t *ctx = (imap_store_t *)gctx;
 	struct imap_cmd_out_uid *cmd;
+	char *buf;
 	int d;
-	char flagstr[128], datestr[64], buf[1024];
+	char flagstr[128], datestr[64];
 
 	d = 0;
 	if (data->flags) {
@@ -1919,12 +1941,12 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int to_trash,
 	if (to_trash) {
 		cmd->gen.param.create = 1;
 		cmd->gen.param.to_trash = 1;
-		if (prepare_trash( buf, ctx ) < 0) {
+		if (prepare_trash( &buf, ctx ) < 0) {
 			cb( DRV_BOX_BAD, -1, aux );
 			return;
 		}
 	} else {
-		if (prepare_box( buf, ctx ) < 0) {
+		if (prepare_box( &buf, ctx ) < 0) {
 			cb( DRV_BOX_BAD, -1, aux );
 			return;
 		}
@@ -1945,6 +1967,7 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int to_trash,
 		imap_exec( ctx, &cmd->gen, imap_store_msg_p2,
 		           "APPEND \"%s\" %s", buf, flagstr );
 	}
+	free( buf );
 }
 
 static void
@@ -2143,7 +2166,7 @@ imap_parse_store( conffile_t *cfg, store_conf_t **storep )
 			else if (!strcasecmp( "Path", cfg->cmd ))
 				store->gen.path = nfstrdup( cfg->val );
 			else if (!strcasecmp( "PathDelimiter", cfg->cmd ))
-				store->delimiter = *cfg->val;
+				store->delimiter = nfstrdup( cfg->val );
 			else
 				parse_generic_store( &store->gen, cfg );
 			continue;

src/isync.h

@@ -142,11 +142,11 @@ typedef struct store_conf {
 	char *name;
 	driver_t *driver;
 	const char *path; /* should this be here? its interpretation is driver-specific */
+	const char *flat_delim;
 	const char *map_inbox;
 	const char *trash;
 	unsigned max_size; /* off_t is overkill */
 	unsigned trash_remote_new:1, trash_only_new:1;
-	char flat_delim;
 } store_conf_t;
 
 typedef struct string_list {
@@ -440,7 +440,7 @@ void ATTR_NORETURN oob( void );
 
 char *expand_strdup( const char *s );
 
-int map_name( char *arg, char in, char out );
+int map_name(const char *arg, char **result, int reserve, const char *in, const char *out );
 
 void sort_ints( int *arr, int len );
 

src/main.c

@@ -744,7 +744,7 @@ static void
 store_listed( int sts, void *aux )
 {
 	MVARS(aux)
-	string_list_t *box;
+	string_list_t **box;
 
 	switch (sts) {
 	case DRV_CANCELED:
@@ -752,10 +752,15 @@ store_listed( int sts, void *aux )
 	case DRV_OK:
 		mvars->ctx[t]->listed = 1;
 		if (mvars->ctx[t]->conf->flat_delim) {
-			for (box = mvars->ctx[t]->boxes; box; box = box->next) {
-				if (map_name( box->string, mvars->ctx[t]->conf->flat_delim, '/' ) < 0) {
-					error( "Error: flattened mailbox name '%s' contains canonical hierarchy delimiter\n", box->string );
+			for (box = &mvars->ctx[t]->boxes; *box; box = &(*box)->next) {
+				string_list_t *nbox;
+				if (map_name( (*box)->string, (char **)&nbox, offsetof(string_list_t, string), mvars->ctx[t]->conf->flat_delim, "/" ) < 0) {
+					error( "Error: flattened mailbox name '%s' contains canonical hierarchy delimiter\n", (*box)->string );
 					mvars->ret = mvars->skip = 1;
+				} else {
+					nbox->next = (*box)->next;
+					free( *box );
+					*box = nbox;
 				}
 			}
 		}

src/mbsync.1

@@ -20,7 +20,7 @@
 \" As a special exception, mbsync may be linked with the OpenSSL library,
 \" despite that library's more restrictive license.
 ..
-.TH mbsync 1 "2013 Apr 20"
+.TH mbsync 1 "2013 Aug 3"
 ..
 .SH NAME
 mbsync - synchronize IMAP4 and Maildir mailboxes
@@ -352,7 +352,7 @@ This option is meaningless if a \fBPath\fR was specified.
 ..
 .TP
 \fBPathDelimiter\fR \fIdelim\fR
-Specify the server's hierarchy delimiter character.
+Specify the server's hierarchy delimiter.
 (Default: taken from the server's first "personal" NAMESPACE)
 .br
 Do \fBNOT\fR abuse this to re-interpret the hierarchy.

src/sync.c

@@ -618,8 +618,9 @@ sync_boxes( store_t *ctx[], const char *names[], channel_conf_t *chan,
 		ctx[t]->orig_name =
 			(!names[t] || (ctx[t]->conf->map_inbox && !strcmp( ctx[t]->conf->map_inbox, names[t] ))) ?
 				"INBOX" : names[t];
-		ctx[t]->name = nfstrdup( ctx[t]->orig_name );
-		if (ctx[t]->conf->flat_delim && map_name( ctx[t]->name, '/', ctx[t]->conf->flat_delim ) < 0) {
+		if (!ctx[t]->conf->flat_delim) {
+			ctx[t]->name = nfstrdup( ctx[t]->orig_name );
+		} else if (map_name( ctx[t]->orig_name, &ctx[t]->name, 0, "/", ctx[t]->conf->flat_delim ) < 0) {
 			error( "Error: canonical mailbox name '%s' contains flattened hierarchy delimiter\n", ctx[t]->name );
 			svars->ret = SYNC_FAIL;
 			sync_bail3( svars );

src/util.c

@@ -361,24 +361,59 @@ expand_strdup( const char *s )
 
 /* Return value: 0 = ok, -1 = out found in arg, -2 = in found in arg but no out specified */
 int
-map_name( char *arg, char in, char out )
+map_name( const char *arg, char **result, int reserve, const char *in, const char *out )
 {
-	int l, k;
+	char *p;
+	int i, l, ll, num, inl, outl;
 
-	if (!in || in == out)
+	l = strlen( arg );
+	if (!in) {
+	  copy:
+		*result = nfmalloc( reserve + l + 1 );
+		memcpy( *result + reserve, arg, l + 1 );
 		return 0;
-	for (l = 0; arg[l]; l++)
-		if (arg[l] == in) {
-			if (!out)
-				return -2;
-			arg[l] = out;
-		} else if (arg[l] == out) {
-			/* restore original name for printing error message */
-			for (k = 0; k < l; k++)
-				if (arg[k] == out)
-					arg[k] = in;
+	}
+	inl = strlen( in );
+	if (out) {
+		outl = strlen( out );
+		if (inl == outl && !memcmp( in, out, inl ))
+			goto copy;
+	}
+	for (num = 0, i = 0; i < l; ) {
+		for (ll = 0; ll < inl; ll++)
+			if (arg[i + ll] != in[ll])
+				goto fout;
+		num++;
+		i += inl;
+		continue;
+	  fout:
+		if (out) {
+			for (ll = 0; ll < outl; ll++)
+				if (arg[i + ll] != out[ll])
+					goto fnexti;
 			return -1;
 		}
+	  fnexti:
+		i++;
+	}
+	if (!num)
+		goto copy;
+	if (!out)
+		return -2;
+	*result = nfmalloc( reserve + l + num * (outl - inl) + 1 );
+	p = *result + reserve;
+	for (i = 0; i < l; ) {
+		for (ll = 0; ll < inl; ll++)
+			if (arg[i + ll] != in[ll])
+				goto rnexti;
+		memcpy( p, out, outl );
+		p += outl;
+		i += inl;
+		continue;
+	  rnexti:
+		*p++ = arg[i++];
+	}
+	*p = 0;
 	return 0;
 }