diff options
Diffstat (limited to 'src/ruleset.c')
| -rw-r--r-- | src/ruleset.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/src/ruleset.c b/src/ruleset.c index 24b849b..ee2c60a 100644 --- a/src/ruleset.c +++ b/src/ruleset.c @@ -813,3 +813,206 @@ int nft_ruleset_snprintf(char *buf, size_t size, const struct nft_ruleset *r, } } EXPORT_SYMBOL(nft_ruleset_snprintf); + +static int nft_ruleset_fprintf_tables(FILE *fp, const struct nft_ruleset *rs, + uint32_t type, uint32_t flags) +{ + int len = 0, ret = 0; + struct nft_table *t; + struct nft_table_list_iter *ti; + + ti = nft_table_list_iter_create(rs->table_list); + if (ti == NULL) + return -1; + + t = nft_table_list_iter_next(ti); + while (t != NULL) { + ret = nft_table_fprintf(fp, t, type, flags); + if (ret < 0) + goto err; + + len += ret; + + t = nft_table_list_iter_next(ti); + + ret = fprintf(fp, "%s", nft_ruleset_o_separator(t, type)); + if (ret < 0) + goto err; + + len += ret; + } + nft_table_list_iter_destroy(ti); + + return len; +err: + nft_table_list_iter_destroy(ti); + return -1; +} + +static int nft_ruleset_fprintf_chains(FILE *fp, const struct nft_ruleset *rs, + uint32_t type, uint32_t flags) +{ + int len = 0, ret = 0; + struct nft_chain *o; + struct nft_chain_list_iter *i; + + i = nft_chain_list_iter_create(rs->chain_list); + if (i == NULL) + return -1; + + o = nft_chain_list_iter_next(i); + while (o != NULL) { + ret = nft_chain_fprintf(fp, o, type, flags); + if (ret < 0) + goto err; + + len += ret; + + o = nft_chain_list_iter_next(i); + + ret = fprintf(fp, "%s", nft_ruleset_o_separator(o, type)); + if (ret < 0) + goto err; + + len += ret; + } + nft_chain_list_iter_destroy(i); + + return len; +err: + nft_chain_list_iter_destroy(i); + return -1; +} + +static int nft_ruleset_fprintf_sets(FILE *fp, const struct nft_ruleset *rs, + uint32_t type, uint32_t flags) +{ + int len = 0, ret = 0; + struct nft_set *o; + struct nft_set_list_iter *i; + + i = nft_set_list_iter_create(rs->set_list); + if (i == NULL) + return -1; + + o = nft_set_list_iter_next(i); + while (o != NULL) { + ret = nft_set_fprintf(fp, o, type, flags); + if (ret < 0) + goto err; + + len += ret; + + o = nft_set_list_iter_next(i); + + ret = fprintf(fp, "%s", nft_ruleset_o_separator(o, type)); + if (ret < 0) + goto err; + + len += ret; + } + nft_set_list_iter_destroy(i); + + return len; +err: + nft_set_list_iter_destroy(i); + return -1; +} + +static int nft_ruleset_fprintf_rules(FILE *fp, const struct nft_ruleset *rs, + uint32_t type, uint32_t flags) +{ + int len = 0, ret = 0; + struct nft_rule *o; + struct nft_rule_list_iter *i; + + i = nft_rule_list_iter_create(rs->rule_list); + if (i == NULL) + return -1; + + o = nft_rule_list_iter_next(i); + while (o != NULL) { + ret = nft_rule_fprintf(fp, o, type, flags); + if (ret < 0) + goto err; + + len += ret; + + o = nft_rule_list_iter_next(i); + + ret = fprintf(fp, "%s", nft_ruleset_o_separator(o, type)); + if (ret < 0) + goto err; + + len += ret; + } + nft_rule_list_iter_destroy(i); + + return len; +err: + nft_rule_list_iter_destroy(i); + return -1; +} + +#define NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len) \ + if (ret < 0) \ + return -1; \ + len += ret; + +int nft_ruleset_fprintf(FILE *fp, const struct nft_ruleset *rs, uint32_t type, + uint32_t flags) +{ + int len = 0, ret = 0; + void *prev = NULL; + + ret = fprintf(fp, "%s", nft_ruleset_o_opentag(type)); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + if ((nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_TABLELIST)) && + (!nft_table_list_is_empty(rs->table_list))) { + ret = nft_ruleset_fprintf_tables(fp, rs, type, flags); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + if (ret > 0) + prev = rs->table_list; + } + + if ((nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_CHAINLIST)) && + (!nft_chain_list_is_empty(rs->chain_list))) { + ret = fprintf(fp, "%s", nft_ruleset_o_separator(prev, type)); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + ret = nft_ruleset_fprintf_chains(fp, rs, type, flags); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + if (ret > 0) + prev = rs->chain_list; + } + + if ((nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_SETLIST)) && + (!nft_set_list_is_empty(rs->set_list))) { + ret = fprintf(fp, "%s", nft_ruleset_o_separator(prev, type)); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + ret = nft_ruleset_fprintf_sets(fp, rs, type, flags); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + if (ret > 0) + prev = rs->set_list; + } + + if ((nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_RULELIST)) && + (!nft_rule_list_is_empty(rs->rule_list))) { + ret = fprintf(fp, "%s", nft_ruleset_o_separator(prev, type)); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + ret = nft_ruleset_fprintf_rules(fp, rs, type, flags); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + } + + ret = fprintf(fp, "%s", nft_ruleset_o_closetag(type)); + NFT_FPRINTF_RETURN_OR_FIXLEN(ret, len); + + return len; +} +EXPORT_SYMBOL(nft_ruleset_fprintf); |