discover: Add PXE parser

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

diff --git a/discover/Makefile.am b/discover/Makefile.am
index 8cbb0af7c3727d6fab2d70e23606ee9e1c544adb..ce8cff5b32b45e25a9c4a0bbe6153e229d9b82fc 100644 (file)
--- a/discover/Makefile.am
+++ b/discover/Makefile.am
@@ -32,7 +32,8 @@ libparser_o_SOURCES = \
        resource.h \
        kboot-parser.c \
        grub2-parser.c \
-       yaboot-parser.c
+       yaboot-parser.c \
+       pxe-parser.c
 
 libparser.o: $(libparser_o_OBJECTS)
        $(LD) -r -o $@ $^

diff --git a/discover/pxe-parser.c b/discover/pxe-parser.c
new file mode 100644 (file)
index 0000000..662716a
--- /dev/null
+++ b/discover/pxe-parser.c
@@ -0,0 +1,78 @@
+
+#include <string.h>
+
+#include <talloc/talloc.h>
+#include <url/url.h>
+
+#include "parser.h"
+#include "parser-conf.h"
+#include "parser-utils.h"
+#include "resource.h"
+
+static void pxe_finish(struct conf_context *conf)
+{
+       printf("%s\n", __func__);
+       discover_context_add_boot_option(conf->dc, conf->parser_info);
+}
+
+static void pxe_process_pair(struct conf_context *ctx,
+               const char *name, char *value)
+{
+       struct discover_boot_option *opt = ctx->parser_info;
+       struct pb_url *url;
+
+       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);
+               return;
+       }
+
+       /* all other parameters need an option */
+       if (!opt)
+               return;
+
+       if (streq(name, "KERNEL")) {
+               url = pb_url_join(ctx->dc, ctx->dc->conf_url, value);
+               opt->boot_image = create_url_resource(opt, url);
+
+       } else if (streq(name, "APPEND")) {
+               opt->option->boot_args = talloc_strdup(opt->option, value);
+               /* todo: initrd extraction */
+       }
+}
+
+static int pxe_parse(struct discover_context *dc, char *buf, int len)
+{
+       struct conf_context *conf;
+
+       conf = talloc_zero(dc, struct conf_context);
+
+       if (!conf)
+               return 0;
+
+       conf->dc = dc;
+       conf->get_pair = conf_get_pair_space;
+       conf->process_pair = pxe_process_pair;
+       conf->finish = pxe_finish;
+
+       conf_parse_buf(conf, buf, len);
+
+       talloc_free(conf);
+       return 1;
+}
+
+static struct parser pxe_parser = {
+       .name                   = "pxe",
+       .parse                  = pxe_parse,
+       .method                 = CONF_METHOD_DHCP,
+};
+
+register_parser(pxe_parser);