X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fparser.c;h=8d4c180c2c1bccc7a3a43f1da996c09f5b901f65;hp=0df8a737c103c5265782c75a6b140ef0fb945648;hb=7c8683fa009115f8a3b08b7a7666b64ebcbbc1bc;hpb=5444648fe1ff9b79f3db5ee6feadd51341f59d71

diff --git a/discover/parser.c b/discover/parser.c
index 0df8a73..8d4c180 100644
--- a/discover/parser.c
+++ b/discover/parser.c
@@ -13,18 +13,8 @@
 #include "parser-utils.h"
 #include "paths.h"
 
-struct parser __grub2_parser;
-struct parser __kboot_parser;
-struct parser __native_parser;
-struct parser __yaboot_parser;
-
-static struct parser *const parsers[] = {
-//	&__native_parser,
-	&__kboot_parser,
-	&__grub2_parser,
-	&__yaboot_parser,
-	NULL
-};
+static int n_parsers;
+static struct parser **parsers;
 
 static const int max_file_size = 1024 * 1024;
 
@@ -47,7 +37,7 @@ static int read_file(struct discover_context *ctx,
 	if (len > max_file_size)
 		goto err_close;
 
-	buf = talloc_array(ctx, char, len);
+	buf = talloc_array(ctx, char, len + 1);
 	if (!buf)
 		goto err_close;
 
@@ -65,6 +55,8 @@ static int read_file(struct discover_context *ctx,
 
 	}
 
+	buf[len] = '\0';
+
 	close(fd);
 	*bufp = buf;
 	*lenp = len;
@@ -83,6 +75,28 @@ static char *local_path(struct discover_context *ctx,
 	return join_paths(ctx, ctx->device->mount_path, filename);
 }
 
+static int download_config(struct discover_context *ctx, char **buf, int *len)
+{
+	unsigned tempfile;
+	const char *file;
+	int rc;
+
+	file = load_url(ctx, ctx->conf_url, &tempfile);
+	if (!file)
+		return -1;
+
+	rc = read_file(ctx, file, buf, len);
+	if (rc)
+		goto out_clean;
+
+	return 0;
+
+out_clean:
+	if (tempfile)
+		unlink(file);
+	return -1;
+}
+
 static void iterate_parser_files(struct discover_context *ctx,
 		const struct parser *parser)
 {
@@ -108,18 +122,55 @@ static void iterate_parser_files(struct discover_context *ctx,
 	}
 }
 
-void iterate_parsers(struct discover_context *ctx)
+void iterate_parsers(struct discover_context *ctx, enum conf_method method)
 {
-	int i;
+	int rc, i, len;
+	char *buf;
 
 	pb_log("trying parsers for %s\n", ctx->device->device->id);
 
-	for (i = 0; parsers[i]; i++) {
-		pb_log("\ttrying parser '%s'\n", parsers[i]->name);
-		ctx->parser = parsers[i];
-		iterate_parser_files(ctx, parsers[i]);
+	switch (method) {
+	case CONF_METHOD_LOCAL_FILE:
+		for (i = 0; i < n_parsers; i++) {
+			if (parsers[i]->method != CONF_METHOD_LOCAL_FILE)
+				continue;
+
+			pb_log("\ttrying parser '%s'\n", parsers[i]->name);
+			ctx->parser = parsers[i];
+			iterate_parser_files(ctx, ctx->parser);
+		}
+		ctx->parser = NULL;
+		break;
+
+	case CONF_METHOD_DHCP:
+		rc = download_config(ctx, &buf, &len);
+		if (rc) {
+			pb_log("\tdownload failed, aborting\n");
+			return;
+		}
+
+		for (i = 0; i < n_parsers; i++) {
+			if (parsers[i]->method != method)
+				continue;
+
+			pb_log("\ttrying parser '%s'\n", parsers[i]->name);
+			ctx->parser = parsers[i];
+			parsers[i]->parse(ctx, buf, len);
+		}
+
+		break;
+
+	case CONF_METHOD_UNKNOWN:
+		break;
+
 	}
-	ctx->parser = NULL;
+}
+
+void __register_parser(struct parser *parser)
+{
+	parsers = talloc_realloc(NULL, parsers, struct parser *, n_parsers + 1);
+	parsers[n_parsers] = parser;
+	n_parsers++;
 }
 
 void parser_init(void)