X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fpxe-parser.c;h=2fc261ba9a9089bf3a7841bf10077842829d2acc;hp=ca0f4b543ef09a6bbc9e4a4eb0db0680e8d96154;hb=729bcafedd3b117c031c413fac2e2d2096d62510;hpb=15c8cadd1173f681142a3f48319a203d7b917850

diff --git a/discover/pxe-parser.c b/discover/pxe-parser.c
index ca0f4b5..2fc261b 100644
--- a/discover/pxe-parser.c
+++ b/discover/pxe-parser.c
@@ -1,5 +1,7 @@
 
-#define _GNU_SOURCE
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
 #include <string.h>
 
 #include <talloc/talloc.h>
@@ -9,17 +11,26 @@
 #include "parser-conf.h"
 #include "parser-utils.h"
 #include "resource.h"
+#include "paths.h"
+#include "user-event.h"
+
+struct pxe_parser_info {
+	struct discover_boot_option *opt;
+	const char *default_name;
+};
 
 static void pxe_finish(struct conf_context *conf)
 {
-	if (conf->parser_info)
-		discover_context_add_boot_option(conf->dc, conf->parser_info);
+	struct pxe_parser_info *info = conf->parser_info;
+	if (info->opt)
+		discover_context_add_boot_option(conf->dc, info->opt);
 }
 
 static void pxe_process_pair(struct conf_context *ctx,
 		const char *name, char *value)
 {
-	struct discover_boot_option *opt = ctx->parser_info;
+	struct pxe_parser_info *parser_info = ctx->parser_info;
+	struct discover_boot_option *opt = parser_info->opt;
 	struct pb_url *url;
 
 	/* quirk in the syslinux config format: initrd can be separated
@@ -32,16 +43,25 @@ static void pxe_process_pair(struct conf_context *ctx,
 	if (!name)
 		return;
 
+	if (streq(name, "DEFAULT")) {
+		parser_info->default_name = talloc_strdup(parser_info, value);
+		return;
+	}
+
 	if (streq(name, "LABEL")) {
 		if (opt)
 			pxe_finish(ctx);
 
 		opt = discover_boot_option_create(ctx->dc, ctx->dc->device);
-		ctx->parser_info = opt;
 
 		opt->option->name = talloc_strdup(opt, value);
 		opt->option->id = talloc_asprintf(opt, "%s@%p",
 				ctx->dc->device->device->id, opt);
+
+		opt->option->is_default = parser_info->default_name &&
+					streq(parser_info->default_name, value);
+
+		parser_info->opt = opt;
 		return;
 	}
 
@@ -75,30 +95,88 @@ static void pxe_process_pair(struct conf_context *ctx,
 
 }
 
-static int pxe_parse(struct discover_context *dc, char *buf, int len)
+static int pxe_parse(struct discover_context *dc)
 {
+	struct pxe_parser_info *parser_info;
+	char **pxe_conf_files, **filename;
+	struct pb_url *conf_url, *url;
 	struct conf_context *conf;
+	int len, rc;
+	char *buf;
+
+	/* Expects dhcp event parameters to support network boot */
+	if (!dc->event)
+		return -1;
 
 	conf = talloc_zero(dc, struct conf_context);
 
 	if (!conf)
-		return 0;
+		goto out;
 
 	conf->dc = dc;
 	conf->get_pair = conf_get_pair_space;
 	conf->process_pair = pxe_process_pair;
 	conf->finish = pxe_finish;
 
+	parser_info = talloc_zero(conf, struct pxe_parser_info);
+	conf->parser_info = parser_info;
+
+	conf_url = user_event_parse_conf_url(dc, dc->event);
+	if (!conf_url)
+		goto out_conf;
+
+	if (dc->conf_url) {
+		rc = parser_request_url(dc, dc->conf_url, &buf, &len);
+		if (rc)
+			goto out_conf;
+	} else {
+		pxe_conf_files = user_event_parse_conf_filenames(dc, dc->event);
+		if (!pxe_conf_files)
+			goto out_conf;
+
+		rc = -1;
+
+		for (filename = pxe_conf_files; *filename; filename++) {
+			url = pb_url_join(dc, conf_url, *filename);
+			if (!url)
+				goto out_pxe_conf;
+
+			rc = parser_request_url(dc, url, &buf, &len);
+			if (!rc) /* found one, just break */
+				break;
+
+			talloc_free(url);
+		}
+
+		/* No configuration file found on the boot server */
+		if (rc)
+			goto out_pxe_conf;
+
+		dc->conf_url = url;
+
+		talloc_free(conf_url);
+		talloc_free(pxe_conf_files);
+	}
+
+	/* Call the config file parser with the data read from the file */
 	conf_parse_buf(conf, buf, len);
 
+	talloc_free(buf);
+	talloc_free(conf);
+
+	return 0;
+
+out_pxe_conf:
+	talloc_free(pxe_conf_files);
+out_conf:
 	talloc_free(conf);
-	return 1;
+out:
+	return -1;
 }
 
 static struct parser pxe_parser = {
 	.name			= "pxe",
 	.parse			= pxe_parse,
-	.method			= CONF_METHOD_DHCP,
 };
 
 register_parser(pxe_parser);