X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fpxe-parser.c;h=e245f1b82b10536f6fb549237dc0627fc18fbb91;hp=662716ac075cfe6fe73e6085de986bc08ec1b924;hb=416647ec10a0ca505de35348620391fde80043c0;hpb=a51e41eb1d2545b7eb03ff02604225b9594b11e7

diff --git a/discover/pxe-parser.c b/discover/pxe-parser.c
index 662716a..e245f1b 100644
--- a/discover/pxe-parser.c
+++ b/discover/pxe-parser.c
@@ -1,4 +1,7 @@
 
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
 #include <string.h>
 
 #include <talloc/talloc.h>
@@ -8,30 +11,57 @@
 #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)
 {
-	printf("%s\n", __func__);
-	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
+	 * by an '=' */
+	if (!name && !strncasecmp(value, "initrd=", strlen("initrd="))) {
+		name = "initrd";
+		value += strlen("initrd=");
+	}
+
+	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->device_id = ctx->dc->device->device->id;
 		opt->option->name = talloc_strdup(opt, value);
 		opt->option->id = talloc_asprintf(opt, "%s@%p",
-				opt->option->device_id, opt);
+				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;
 	}
 
@@ -43,36 +73,113 @@ static void pxe_process_pair(struct conf_context *ctx,
 		url = pb_url_join(ctx->dc, ctx->dc->conf_url, value);
 		opt->boot_image = create_url_resource(opt, url);
 
+	} else if (streq(name, "INITRD")) {
+		url = pb_url_join(ctx->dc, ctx->dc->conf_url, value);
+		opt->initrd = create_url_resource(opt, url);
+
 	} else if (streq(name, "APPEND")) {
+		char *str, *end;
+
 		opt->option->boot_args = talloc_strdup(opt->option, value);
-		/* todo: initrd extraction */
+
+		str = strcasestr(value, "INITRD=");
+		if (str) {
+			str += strlen("INITRD=");
+			end = strchrnul(str, ' ');
+			*end = '\0';
+
+			url = pb_url_join(ctx->dc, ctx->dc->conf_url, str);
+			opt->initrd = create_url_resource(opt, url);
+		}
 	}
+
 }
 
-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;
+	bool complete_url;
+	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, &complete_url);
+	if (!conf_url)
+		goto out_conf;
+
+	if (complete_url) {
+		/* we have a complete URL; use this and we're done. */
+		dc->conf_url = 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);