diff options
Diffstat (limited to 'src/expr/meta.c')
-rw-r--r-- | src/expr/meta.c | 67 |
1 files changed, 66 insertions, 1 deletions
diff --git a/src/expr/meta.c b/src/expr/meta.c index bfc1aa6..6316a49 100644 --- a/src/expr/meta.c +++ b/src/expr/meta.c @@ -12,7 +12,7 @@ #include <stdio.h> #include <stdint.h> #include <arpa/inet.h> - +#include <errno.h> #include <linux/netfilter/nf_tables.h> #include "internal.h" @@ -125,6 +125,70 @@ nft_rule_expr_meta_parse(struct nft_rule_expr *e, struct nlattr *attr) return 0; } +static int nft_rule_expr_meta_xml_parse(struct nft_rule_expr *e, char *xml) +{ +#ifdef XML_PARSING + struct nft_expr_meta *meta = (struct nft_expr_meta *)e->data; + mxml_node_t *tree = NULL; + mxml_node_t *node = NULL; + uint64_t tmp; + char *endptr; + + tree = mxmlLoadString(NULL, xml, MXML_OPAQUE_CALLBACK); + if (tree == NULL) + return -1; + + if (mxmlElementGetAttr(tree, "type") == NULL) { + mxmlDelete(tree); + return -1; + } + + if (strcmp("meta", mxmlElementGetAttr(tree, "type")) != 0) { + mxmlDelete(tree); + return -1; + } + + /* Get and set <dreg>. Is mandatory */ + node = mxmlFindElement(tree, tree, "dreg", NULL, NULL, + MXML_DESCEND_FIRST); + if (node == NULL) { + mxmlDelete(tree); + return -1; + } + + tmp = strtoull(node->child->value.opaque, &endptr, 10); + if (tmp > UINT8_MAX || tmp < 0 || *endptr) { + mxmlDelete(tree); + return -1; + } + + meta->dreg = (uint8_t)tmp; + e->flags |= (1 << NFT_EXPR_META_DREG); + + /* Get and set <key>. Is mandatory */ + node = mxmlFindElement(tree, tree, "key", NULL, NULL, MXML_DESCEND); + if (node == NULL) { + mxmlDelete(tree); + return -1; + } + + tmp = strtoull(node->child->value.opaque, &endptr, 10); + if (tmp > UINT8_MAX || tmp < 0 || *endptr) { + mxmlDelete(tree); + return -1; + } + + meta->key = (uint8_t)tmp; + e->flags |= (1 << NFT_EXPR_META_KEY); + + mxmlDelete(tree); + return 0; +#else + errno = EOPNOTSUPP; + return -1; +#endif +} + static int nft_rule_expr_meta_snprintf(char *buf, size_t len, uint32_t type, uint32_t flags, struct nft_rule_expr *e) @@ -154,4 +218,5 @@ struct expr_ops expr_ops_meta = { .parse = nft_rule_expr_meta_parse, .build = nft_rule_expr_meta_build, .snprintf = nft_rule_expr_meta_snprintf, + .xml_parse = nft_rule_expr_meta_xml_parse, }; |