From 99981540182c29049e971a3cb9a772d7f107b2ab Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 20 Jan 2008 22:16:59 +0100
Subject: [PATCH] add support for listing config files

---
 .gitignore |  4 ++--
 Makefile   | 19 +++++++++++-----
 cli.c      | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 libuci.c   | 12 ++++++++++
 list.c     | 30 +++++++++++++++++++++++++
 parse.c    |  4 ----
 test.c     | 30 -------------------------
 uci.h      | 15 +++++++++++--
 8 files changed, 135 insertions(+), 43 deletions(-)
 create mode 100644 cli.c
 delete mode 100644 test.c

diff --git a/.gitignore b/.gitignore
index 5d893ce..fabbfaa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,3 @@
-parsetest
-*.o
+uci
+*.[oa]
 .*.swp
diff --git a/Makefile b/Makefile
index 645ec65..ec382ed 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,21 @@
+COPTS=-g -O2
+CFLAGS=$(COPTS) -Wall -pedantic -std=gnu99 -Wno-unused -Werror
+
+AR=ar
 CC=gcc
-CFLAGS=-g -O2 -Wall -pedantic -std=gnu99 -Wno-unused -Werror
+RANLIB=ranlib
+
+all: uci
 
-all: parsetest
-parsetest: libuci.o test.o
+cli.o: cli.c uci.h
+uci: cli.o libuci.a
 	$(CC) $(CFLAGS) -o $@ $^
 
 libuci.o: libuci.c parse.c uci.h list.c err.h
-test.o: test.c uci.h
+libuci.a: libuci.o
+	rm -f $@
+	$(AR) rc $@ $^
+	$(RANLIB) $@
 
 clean:
-	rm -f parsetest *.o
+	rm -f uci *.[oa]
diff --git a/cli.c b/cli.c
new file mode 100644
index 0000000..d83e257
--- /dev/null
+++ b/cli.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * 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.
+ */
+#include <strings.h>
+#include <stdlib.h>
+#include "uci.h"
+
+static struct uci_context *ctx;
+
+static void uci_usage(int argc, char **argv)
+{
+	fprintf(stderr,
+		"Usage: %s [options] <command> [arguments]\n\n"
+		"Commands:\n"
+		"\tshow [<config>[.<section>[.<option>]]]\n"
+		"\n",
+		argv[0]
+	);
+	exit(255);
+}
+
+static int uci_show(int argc, char **argv)
+{
+	char **configs = uci_list_configs(ctx);
+	char **p;
+
+	if (!configs)
+		return 0;
+
+	for (p = configs; *p; p++) {
+		fprintf(stderr, "# config: %s\n", *p);
+	}
+
+	return 0;
+}
+
+static int uci_cmd(int argc, char **argv)
+{
+	if (!strcasecmp(argv[0], "show"))
+		uci_show(argc, argv);
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	int ret;
+
+	ctx = uci_alloc();
+	if (argc < 2)
+		uci_usage(argc, argv);
+	ret = uci_cmd(argc - 1, argv + 1);
+	uci_free(ctx);
+
+	return ret;
+}
diff --git a/libuci.c b/libuci.c
index cb0bc36..1902673 100644
--- a/libuci.c
+++ b/libuci.c
@@ -94,6 +94,18 @@ struct uci_context *uci_alloc(void)
 	return ctx;
 }
 
+void uci_free(struct uci_context *ctx)
+{
+	struct uci_config *cfg;
+
+	uci_cleanup(ctx);
+	uci_foreach_entry(config, &ctx->root, cfg) {
+		uci_drop_file(cfg);
+	}
+	free(ctx);
+	return;
+}
+
 int uci_cleanup(struct uci_context *ctx)
 {
 	UCI_HANDLE_ERR(ctx);
diff --git a/list.c b/list.c
index addfc73..f4ab8ec 100644
--- a/list.c
+++ b/list.c
@@ -12,6 +12,8 @@
  * GNU General Public License for more details.
  */
 
+#include <glob.h>
+
 /* initialize a list head/item */
 static inline void uci_list_init(struct uci_list *ptr)
 {
@@ -156,3 +158,31 @@ error:
 	return NULL;
 }
 
+char **uci_list_configs(struct uci_context *ctx)
+{
+	char **configs;
+	glob_t globbuf;
+	int size, i;
+	char *buf;
+
+	if (glob(UCI_CONFDIR "/*", GLOB_MARK, NULL, &globbuf) != 0)
+		return NULL;
+
+	size = sizeof(char *) * (globbuf.gl_pathc + 1);
+	for(i = 0; i < globbuf.gl_pathc; i++)
+		size += strlen(globbuf.gl_pathv[i]) + 1;
+
+	configs = malloc(size);
+	if (!configs)
+		return NULL;
+
+	memset(configs, 0, size);
+	buf = (char *) &configs[globbuf.gl_pathc + 1];
+	for(i = 0; i < globbuf.gl_pathc; i++) {
+		configs[i] = buf;
+		strcpy(buf, globbuf.gl_pathv[i]);
+		buf += strlen(buf) + 1;
+	}
+	return configs;
+}
+
diff --git a/parse.c b/parse.c
index 31756d9..c8f090c 100644
--- a/parse.c
+++ b/parse.c
@@ -253,8 +253,6 @@ static void uci_parse_config(struct uci_context *ctx, char **str)
 	type = next_arg(ctx, str, true);
 	name = next_arg(ctx, str, false);
 	assert_eol(ctx, str);
-
-	DPRINTF("Section<%s>: %s\n", type, name);
 }
 
 /*
@@ -270,8 +268,6 @@ static void uci_parse_option(struct uci_context *ctx, char **str)
 	name = next_arg(ctx, str, true);
 	value = next_arg(ctx, str, true);
 	assert_eol(ctx, str);
-
-	DPRINTF("\tOption: %s=\"%s\"\n", name, value);
 }
 
 /*
diff --git a/test.c b/test.c
deleted file mode 100644
index caf773b..0000000
--- a/test.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * 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.
- */
-#include "uci.h"
-
-int main(int argc, char **argv)
-{
-	struct uci_context *ctx = uci_alloc();
-
-	if (!ctx) {
-		fprintf(stderr, "Failed to allocate uci context");
-		return 1;
-	}
-
-	if (uci_load(ctx, argv[1])) {
-		uci_perror(ctx, "uci_parse");
-		return 1;
-	}
-
-	return 0;
-}
diff --git a/uci.h b/uci.h
index d18095d..26cc3b7 100644
--- a/uci.h
+++ b/uci.h
@@ -49,6 +49,11 @@ struct uci_parse_context;
  */
 extern struct uci_context *uci_alloc(void);
 
+/**
+ * uci_free: Free the uci context including all of its data
+ */
+extern void uci_free(struct uci_context *ctx);
+
 /**
  * uci_perror: Print the last uci error that occured
  * @ctx: uci context
@@ -62,15 +67,21 @@ extern void uci_perror(struct uci_context *ctx, const char *str);
  * @ctx: uci context
  * @name: name of the config file (relative to the config directory)
  */
-int uci_load(struct uci_context *ctx, const char *name);
+extern int uci_load(struct uci_context *ctx, const char *name);
 
 /**
  * uci_cleanup: Clean up after an error
  *
  * @ctx: uci context
  */
-int uci_cleanup(struct uci_context *ctx);
+extern int uci_cleanup(struct uci_context *ctx);
 
+/**
+ * uci_list_configs: List available uci config files
+ *
+ * @ctx: uci context
+ */
+extern char **uci_list_configs(struct uci_context *ctx);
 
 /* UCI data structures */
 
-- 
2.41.1