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-rw-r--r--src/ruleset.c107
1 files changed, 54 insertions, 53 deletions
diff --git a/src/ruleset.c b/src/ruleset.c
index 8944da6..24b849b 100644
--- a/src/ruleset.c
+++ b/src/ruleset.c
@@ -579,18 +579,42 @@ int nft_ruleset_parse(struct nft_ruleset *r, enum nft_ruleset_parse_type type,
}
EXPORT_SYMBOL(nft_ruleset_parse);
-static int separator_snprintf(char *buf, size_t size, void *obj, uint32_t type)
+static const char *nft_ruleset_o_opentag(uint32_t type)
+{
+ switch (type) {
+ case NFT_RULESET_O_XML:
+ return "<nftables>";
+ case NFT_RULESET_O_JSON:
+ return "{\"nftables\":[";
+ default:
+ return "";
+ }
+}
+
+static const char *nft_ruleset_o_separator(void *obj, uint32_t type)
{
if (obj == NULL)
- return 0;
+ return "";
switch (type) {
case NFT_RULESET_O_JSON:
- return snprintf(buf, size, ",");
+ return ",";
case NFT_RULESET_O_DEFAULT:
- return snprintf(buf, size, "\n");
+ return "\n";
default:
- return 0;
+ return "";
+ }
+}
+
+static const char *nft_ruleset_o_closetag(uint32_t type)
+{
+ switch (type) {
+ case NFT_RULESET_O_XML:
+ return "</nftables>";
+ case NFT_RULESET_O_JSON:
+ return "]}";
+ default:
+ return "";
}
}
@@ -613,7 +637,9 @@ nft_ruleset_snprintf_table(char *buf, size_t size,
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
t = nft_table_list_iter_next(ti);
- ret = separator_snprintf(buf+offset, len, t, type);
+
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(t, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
}
nft_table_list_iter_destroy(ti);
@@ -640,7 +666,9 @@ nft_ruleset_snprintf_chain(char *buf, size_t size,
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
c = nft_chain_list_iter_next(ci);
- ret = separator_snprintf(buf+offset, len, c, type);
+
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(c, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
}
nft_chain_list_iter_destroy(ci);
@@ -667,7 +695,9 @@ nft_ruleset_snprintf_set(char *buf, size_t size,
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
s = nft_set_list_iter_next(si);
- ret = separator_snprintf(buf+offset, len, s, type);
+
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(s, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
}
nft_set_list_iter_destroy(si);
@@ -694,7 +724,9 @@ nft_ruleset_snprintf_rule(char *buf, size_t size,
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
r = nft_rule_list_iter_next(ri);
- ret = separator_snprintf(buf+offset, len, r, type);
+
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(r, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
}
nft_rule_list_iter_destroy(ri);
@@ -709,6 +741,9 @@ nft_ruleset_do_snprintf(char *buf, size_t size, const struct nft_ruleset *rs,
int ret, len = size, offset = 0;
void *prev = NULL;
+ ret = snprintf(buf+offset, size, "%s", nft_ruleset_o_opentag(type));
+ SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
+
if (nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_TABLELIST) &&
(!nft_table_list_is_empty(rs->table_list))) {
ret = nft_ruleset_snprintf_table(buf+offset, len, rs,
@@ -721,7 +756,8 @@ nft_ruleset_do_snprintf(char *buf, size_t size, const struct nft_ruleset *rs,
if (nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_CHAINLIST) &&
(!nft_chain_list_is_empty(rs->chain_list))) {
- ret = separator_snprintf(buf+offset, len, prev, type);
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(prev, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
ret = nft_ruleset_snprintf_chain(buf+offset, len, rs,
@@ -734,7 +770,8 @@ nft_ruleset_do_snprintf(char *buf, size_t size, const struct nft_ruleset *rs,
if (nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_SETLIST) &&
(!nft_set_list_is_empty(rs->set_list))) {
- ret = separator_snprintf(buf+offset, len, prev, type);
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(prev, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
ret = nft_ruleset_snprintf_set(buf+offset, len, rs,
@@ -747,7 +784,8 @@ nft_ruleset_do_snprintf(char *buf, size_t size, const struct nft_ruleset *rs,
if (nft_ruleset_attr_is_set(rs, NFT_RULESET_ATTR_RULELIST) &&
(!nft_rule_list_is_empty(rs->rule_list))) {
- ret = separator_snprintf(buf+offset, len, prev, type);
+ ret = snprintf(buf+offset, len, "%s",
+ nft_ruleset_o_separator(prev, type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
ret = nft_ruleset_snprintf_rule(buf+offset, len, rs,
@@ -755,42 +793,7 @@ nft_ruleset_do_snprintf(char *buf, size_t size, const struct nft_ruleset *rs,
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
}
- return offset;
-}
-
-static int
-nft_ruleset_snprintf_xml(char *buf, size_t size, const struct nft_ruleset *rs,
- uint32_t flags)
-{
- int ret, len = size, offset = 0;
-
- ret = snprintf(buf, size, "<nftables>");
- SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
-
- ret = nft_ruleset_do_snprintf(buf+offset, len, rs, NFT_RULESET_O_XML,
- flags);
- SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
-
- ret = snprintf(buf+offset, len, "</nftables>");
- SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
-
- return offset;
-}
-
-static int
-nft_ruleset_snprintf_json(char *buf, size_t size, const struct nft_ruleset *rs,
- uint32_t flags)
-{
- int ret, len = size, offset = 0;
-
- ret = snprintf(buf, size, "{\"nftables\":[");
- SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
-
- ret = nft_ruleset_do_snprintf(buf+offset, len, rs, NFT_RULESET_O_JSON,
- flags);
- SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
-
- ret = snprintf(buf+offset, len, "]}");
+ ret = snprintf(buf+offset, size, "%s", nft_ruleset_o_closetag(type));
SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
return offset;
@@ -801,14 +804,12 @@ int nft_ruleset_snprintf(char *buf, size_t size, const struct nft_ruleset *r,
{
switch (type) {
case NFT_RULESET_O_DEFAULT:
- return nft_ruleset_do_snprintf(buf, size, r, type, flags);
case NFT_RULESET_O_XML:
- return nft_ruleset_snprintf_xml(buf, size, r, flags);
case NFT_RULESET_O_JSON:
- return nft_ruleset_snprintf_json(buf, size, r, flags);
+ return nft_ruleset_do_snprintf(buf, size, r, type, flags);
default:
- break;
+ errno = EOPNOTSUPP;
+ return -1;
}
- return -1;
}
EXPORT_SYMBOL(nft_ruleset_snprintf);
generated by cgit v1.2.3 (git 2.25.0) at 2024-11-16 15:15:29 +0000