1 files changed, 126 insertions, 0 deletions
diff --git a/release/src/router/busybox/applets/applet_tables.c b/release/src/router/busybox/applets/applet_tables.c
new file mode 100644
index 00000000..17135ddc
--- /dev/null
+++ b/release/src/router/busybox/applets/applet_tables.c
@@ -0,0 +1,126 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Applet table generator.
+ * Runs on host and produces include/applet_tables.h
+ *
+ * Copyright (C) 2007 Denys Vlasenko <vda.linux@googlemail.com>
+ *
+ * Licensed under GPLv2, see file License in this tarball for details.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../include/autoconf.h"
+#include "../include/busybox.h"
+
+struct bb_applet {
+	const char *name;
+	const char *main;
+	enum bb_install_loc_t install_loc;
+	enum bb_suid_t need_suid;
+	/* true if instead of fork(); exec("applet"); waitpid();
+	 * one can do fork(); exit(applet_main(argc,argv)); waitpid(); */
+	unsigned char noexec;
+	/* Even nicer */
+	/* true if instead of fork(); exec("applet"); waitpid();
+	 * one can simply call applet_main(argc,argv); */
+	unsigned char nofork;
+};
+
+/* Define struct bb_applet applets[] */
+#include "../include/applets.h"
+
+enum { NUM_APPLETS = ARRAY_SIZE(applets) };
+
+static int offset[NUM_APPLETS];
+
+static int cmp_name(const void *a, const void *b)
+{
+	const struct bb_applet *aa = a;
+	const struct bb_applet *bb = b;
+	return strcmp(aa->name, bb->name);
+}
+
+int main(int argc, char **argv)
+{
+	int i;
+	int ofs;
+	unsigned MAX_APPLET_NAME_LEN = 1;
+
+	qsort(applets, NUM_APPLETS, sizeof(applets[0]), cmp_name);
+
+	ofs = 0;
+	for (i = 0; i < NUM_APPLETS; i++) {
+		offset[i] = ofs;
+		ofs += strlen(applets[i].name) + 1;
+	}
+	/* We reuse 4 high-order bits of offset array for other purposes,
+	 * so if they are indeed needed, refuse to proceed */
+	if (ofs > 0xfff)
+		return 1;
+	if (!argv[1])
+		return 1;
+
+	i = open(argv[1], O_WRONLY | O_TRUNC | O_CREAT, 0666);
+	if (i < 0)
+		return 1;
+	dup2(i, 1);
+
+	/* Keep in sync with include/busybox.h! */
+
+	puts("/* This is a generated file, don't edit */\n");
+
+	printf("#define NUM_APPLETS %u\n", NUM_APPLETS);
+	if (NUM_APPLETS == 1) {
+		printf("#define SINGLE_APPLET_STR \"%s\"\n", applets[0].name);
+		printf("#define SINGLE_APPLET_MAIN %s_main\n", applets[0].name);
+	}
+
+	puts("\nconst char applet_names[] ALIGN1 = \"\"");
+	for (i = 0; i < NUM_APPLETS; i++) {
+		printf("\"%s\" \"\\0\"\n", applets[i].name);
+		if (MAX_APPLET_NAME_LEN < strlen(applets[i].name))
+			MAX_APPLET_NAME_LEN = strlen(applets[i].name);
+	}
+	puts(";");
+
+	puts("\nint (*const applet_main[])(int argc, char **argv) = {");
+	for (i = 0; i < NUM_APPLETS; i++) {
+		printf("%s_main,\n", applets[i].main);
+	}
+	puts("};");
+
+	puts("const uint16_t applet_nameofs[] ALIGN2 = {");
+	for (i = 0; i < NUM_APPLETS; i++) {
+		printf("0x%04x,\n",
+			offset[i]
+#if ENABLE_FEATURE_PREFER_APPLETS
+			+ (applets[i].nofork << 12)
+			+ (applets[i].noexec << 13)
+#endif
+#if ENABLE_FEATURE_SUID
+			+ (applets[i].need_suid << 14) /* 2 bits */
+#endif
+		);
+	}
+	puts("};");
+
+#if ENABLE_FEATURE_INSTALLER
+	puts("const uint8_t applet_install_loc[] ALIGN1 = {");
+	i = 0;
+	while (i < NUM_APPLETS) {
+		int v = applets[i].install_loc; /* 3 bits */
+		if (++i < NUM_APPLETS)
+			v |= applets[i].install_loc << 4; /* 3 bits */
+		printf("0x%02x,\n", v);
+		i++;
+	}
+	puts("};\n");
+#endif
+
+	printf("#define MAX_APPLET_NAME_LEN %u\n", MAX_APPLET_NAME_LEN);
+
+	return 0;
+}