all: Add some print quantity range checks where we can.

Most backends don't verify against remaining media though.

backend_citizencw01.c

@@ -445,7 +445,8 @@ top:
 	free(resp);
 	resp = NULL;
 
-	/* Set print quantity */
+	/* Set print quantity */ // XXX check against remaining print count
+
 	cw01_build_cmd(&cmd, "CNTRL", "QTY", 8);
 	snprintf(buf, sizeof(buf), "%07d\r", copies);
 	ret = cw01_do_cmd(ctx, &cmd, (uint8_t*) buf, 8);

backend_dnpds40.c

@@ -795,6 +795,8 @@ static int dnpds40_main_loop(void *vctx, int copies) {
 		return CUPS_BACKEND_FAILED;
 
 	/* Update quantity offset with count */
+	// XXX this breaks if ctx->manual_copies is set, but the job
+	// has a CNTRL QTY != 1
 	if (!ctx->manual_copies && copies > 1) {
 		snprintf(buf, sizeof(buf), "%07d\r", copies);
 		if (ctx->qty_offset) {

backend_kodak605.c

@@ -299,6 +299,8 @@ static int kodak605_main_loop(void *vctx, int copies) {
 		return CUPS_BACKEND_FAILED;
 
 	/* Printer handles generating copies.. */
+	if (copies > 255)
+		copies = 255;
 	if (ctx->hdr.copies < copies)
 		ctx->hdr.copies = copies;
 

backend_kodak6800.c

@@ -757,6 +757,8 @@ static int kodak6800_main_loop(void *vctx, int copies) {
 		return CUPS_BACKEND_FAILED;
 
 	/* Printer handles generating copies.. */
+	if (copies > 255) // XXX test against remaining media?
+		copies = 255;
 	if (ctx->hdr.copies < copies)
 		ctx->hdr.copies = copies;
 

backend_shinkos1245.c

@@ -1436,6 +1436,10 @@ static int shinkos1245_main_loop(void *vctx, int copies) {
 		return CUPS_BACKEND_HOLD;
 	}
 
+	/* Fix max print count. */
+	if (copies > 9999) // XXX test against remaining media
+		copies = 9999;
+
 top:
 	if (state != last_state) {
 		if (dyesub_debug)

backend_shinkos2145.c

@@ -1573,7 +1573,9 @@ static int shinkos2145_main_loop(void *vctx, int copies) {
 		return CUPS_BACKEND_HOLD;
 	}
 
- top:
+	// XXX check copies against remaining media!
+
+top:
 	if (state != last_state) {
 		if (dyesub_debug)
 			DEBUG("last_state %d new %d\n", last_state, state);

backend_shinkos6145.c

@@ -1762,6 +1762,8 @@ static int shinkos6145_main_loop(void *vctx, int copies) {
 		return CUPS_BACKEND_HOLD;
 	}
 
+	// XXX check copies against remaining media!
+
 top:
 	if (state != last_state) {
 		if (dyesub_debug)

backend_shinkos6245.c

@@ -1679,6 +1679,8 @@ static int shinkos6245_main_loop(void *vctx, int copies) {
 			goto printer_error;
 	}
 
+	// XXX check copies against remaining media!
+
 top:
 	if (state != last_state) {
 		if (dyesub_debug)