This introduces getter/setter pairs for all parts in struct nft_ctx (and
contained structs) which should be configurable.
Most of them are simple ones, just allowing to get/set a given field:
* nft_ctx_{get,set}_dry_run() -> ctx->check
* nft_ctx_output_{get,set}_numeric() -> ctx->output.numeric
* nft_ctx_output_{get,set}_stateless() -> ctx->output.stateless
* nft_ctx_output_{get,set}_ip2name() -> ctx->output.ip2name
* nft_ctx_output_{get,set}_debug() -> ctx->debug_mask
* nft_ctx_output_{get,set}_handle() -> ctx->output.handle
* nft_ctx_output_{get,set}_echo() -> ctx->output.echo
A more complicated case is include paths handling: In order to keep the
API simple, remove INCLUDE_PATHS_MAX restraint and dynamically allocate
nft_ctx field include_paths instead. So there is:
* nft_ctx_add_include_path() -> add an include path to the list
* nft_ctx_clear_include_paths() -> flush the list of include paths
Signed-off-by: Phil Sutter <phil@xxxxxx>
---
include/nftables.h | 4 +-
include/nftables/nftables.h | 19 +++++++++
src/libnftables.c | 101 +++++++++++++++++++++++++++++++++++++++++++-
src/main.c | 30 +++++++------
src/scanner.l | 4 +-
5 files changed, 137 insertions(+), 21 deletions(-)
diff --git a/include/nftables.h b/include/nftables.h
index 98d619a3ab8d2..97a0436693cfa 100644
--- a/include/nftables.h
+++ b/include/nftables.h
@@ -6,8 +6,6 @@
#include <utils.h>
#include <nftables/nftables.h>
-#define INCLUDE_PATHS_MAX 16
-
struct output_ctx {
unsigned int numeric;
unsigned int stateless;
@@ -27,7 +25,7 @@ struct mnl_socket;
struct nft_ctx {
struct mnl_socket *nf_sock;
- const char *include_paths[INCLUDE_PATHS_MAX];
+ char **include_paths;
unsigned int num_include_paths;
unsigned int parser_max_errors;
unsigned int debug_mask;
diff --git a/include/nftables/nftables.h b/include/nftables/nftables.h
index 1207f10cd2457..2dff281183b3c 100644
--- a/include/nftables/nftables.h
+++ b/include/nftables/nftables.h
@@ -50,7 +50,26 @@ enum nftables_exit_codes {
struct nft_ctx *nft_ctx_new(uint32_t flags);
void nft_ctx_free(struct nft_ctx *ctx);
+
+bool nft_ctx_get_dry_run(struct nft_ctx *ctx);
+void nft_ctx_set_dry_run(struct nft_ctx *ctx, bool dry);
+enum numeric_level nft_ctx_output_get_numeric(struct nft_ctx *ctx);
+void nft_ctx_output_set_numeric(struct nft_ctx *ctx, enum numeric_level level);
+bool nft_ctx_output_get_stateless(struct nft_ctx *ctx);
+void nft_ctx_output_set_stateless(struct nft_ctx *ctx, bool val);
+bool nft_ctx_output_get_ip2name(struct nft_ctx *ctx);
+void nft_ctx_output_set_ip2name(struct nft_ctx *ctx, bool val);
+unsigned int nft_ctx_output_get_debug(struct nft_ctx *ctx);
+void nft_ctx_output_set_debug(struct nft_ctx *ctx, unsigned int mask);
+bool nft_ctx_output_get_handle(struct nft_ctx *ctx);
+void nft_ctx_output_set_handle(struct nft_ctx *ctx, bool val);
+bool nft_ctx_output_get_echo(struct nft_ctx *ctx);
+void nft_ctx_output_set_echo(struct nft_ctx *ctx, bool val);
+
FILE *nft_ctx_set_output(struct nft_ctx *ctx, FILE *fp);
+int nft_ctx_add_include_path(struct nft_ctx *ctx, const char *path);
+void nft_ctx_clear_include_paths(struct nft_ctx *ctx);
+
void nft_ctx_flush_cache(struct nft_ctx *ctx);
int nft_run_cmd_from_buffer(struct nft_ctx *nft, char *buf, size_t buflen);
diff --git a/src/libnftables.c b/src/libnftables.c
index 51a87dc34bc60..5e70c197846cf 100644
--- a/src/libnftables.c
+++ b/src/libnftables.c
@@ -14,6 +14,7 @@
#include <iface.h>
#include <errno.h>
+#include <stdlib.h>
#include <string.h>
static int nft_netlink(struct nft_ctx *nft,
@@ -123,6 +124,33 @@ static void nft_exit(void)
mark_table_exit();
}
+int nft_ctx_add_include_path(struct nft_ctx *ctx, const char *path)
+{
+ char **tmp;
+ int pcount = ctx->num_include_paths;
+
+ tmp = realloc(ctx->include_paths, (pcount + 1) * sizeof(char *));
+ if (!tmp)
+ return -1;
+
+ ctx->include_paths = tmp;
+
+ if (asprintf(&ctx->include_paths[pcount], "%s", path) < 0)
+ return -1;
+
+ ctx->num_include_paths++;
+ return 0;
+}
+
+void nft_ctx_clear_include_paths(struct nft_ctx *ctx)
+{
+ while (ctx->num_include_paths)
+ xfree(ctx->include_paths[--ctx->num_include_paths]);
+
+ xfree(ctx->include_paths);
+ ctx->include_paths = NULL;
+}
+
static void nft_ctx_netlink_init(struct nft_ctx *ctx)
{
ctx->nf_sock = netlink_open_sock();
@@ -135,8 +163,7 @@ struct nft_ctx *nft_ctx_new(uint32_t flags)
nft_init();
ctx = xzalloc(sizeof(struct nft_ctx));
- ctx->include_paths[0] = DEFAULT_INCLUDE_PATH;
- ctx->num_include_paths = 1;
+ nft_ctx_add_include_path(ctx, DEFAULT_INCLUDE_PATH);
ctx->parser_max_errors = 10;
init_list_head(&ctx->cache.list);
ctx->flags = flags;
@@ -159,6 +186,7 @@ void nft_ctx_free(struct nft_ctx *ctx)
netlink_close_sock(ctx->nf_sock);
nft_ctx_flush_cache(ctx);
+ nft_ctx_clear_include_paths(ctx);
xfree(ctx);
nft_exit();
}
@@ -172,6 +200,75 @@ FILE *nft_ctx_set_output(struct nft_ctx *ctx, FILE *fp)
return old;
}
+bool nft_ctx_get_dry_run(struct nft_ctx *ctx)
+{
+ return ctx->check;
+}
+
+void nft_ctx_set_dry_run(struct nft_ctx *ctx, bool dry)
+{
+ ctx->check = dry;
+}
+
+enum numeric_level nft_ctx_output_get_numeric(struct nft_ctx *ctx)
+{
+ return ctx->output.numeric;
+}
+
+void nft_ctx_output_set_numeric(struct nft_ctx *ctx, enum numeric_level level)
+{
+ ctx->output.numeric = level;
+}
+
+bool nft_ctx_output_get_stateless(struct nft_ctx *ctx)
+{
+ return ctx->output.stateless;
+}
+
+void nft_ctx_output_set_stateless(struct nft_ctx *ctx, bool val)
+{
+ ctx->output.stateless = val;
+}
+
+bool nft_ctx_output_get_ip2name(struct nft_ctx *ctx)
+{
+ return ctx->output.ip2name;
+}
+
+void nft_ctx_output_set_ip2name(struct nft_ctx *ctx, bool val)
+{
+ ctx->output.ip2name = val;
+}
+
+unsigned int nft_ctx_output_get_debug(struct nft_ctx *ctx)
+{
+ return ctx->debug_mask;
+}
+void nft_ctx_output_set_debug(struct nft_ctx *ctx, unsigned int mask)
+{
+ ctx->debug_mask = mask;
+}
+
+bool nft_ctx_output_get_handle(struct nft_ctx *ctx)
+{
+ return ctx->output.handle;
+}
+
+void nft_ctx_output_set_handle(struct nft_ctx *ctx, bool val)
+{
+ ctx->output.handle = val;
+}
+
+bool nft_ctx_output_get_echo(struct nft_ctx *ctx)
+{
+ return ctx->output.echo;
+}
+
+void nft_ctx_output_set_echo(struct nft_ctx *ctx, bool val)
+{
+ ctx->output.echo = val;
+}
+
static const struct input_descriptor indesc_cmdline = {
.type = INDESC_BUFFER,
.name = "<cmdline>",
diff --git a/src/main.c b/src/main.c
index a28564172e9a0..59c39d4570b02 100644
--- a/src/main.c
+++ b/src/main.c
@@ -20,7 +20,6 @@
#include <nftables/nftables.h>
#include <utils.h>
-#include <nftables.h>
#include <cli.h>
static struct nft_ctx *nft;
@@ -170,6 +169,8 @@ int main(int argc, char * const *argv)
unsigned int len;
bool interactive = false;
int i, val, rc;
+ enum numeric_level numeric;
+ unsigned int debug_mask;
nft = nft_ctx_new(NFT_CTX_DEFAULT);
nft_ctx_set_output(nft, stdout);
@@ -188,7 +189,7 @@ int main(int argc, char * const *argv)
PACKAGE_NAME, PACKAGE_VERSION, RELEASE_NAME);
exit(NFT_EXIT_SUCCESS);
case OPT_CHECK:
- nft->check = true;
+ nft_ctx_set_dry_run(nft, true);
break;
case OPT_FILE:
filename = optarg;
@@ -197,29 +198,31 @@ int main(int argc, char * const *argv)
interactive = true;
break;
case OPT_INCLUDEPATH:
- if (nft->num_include_paths >= INCLUDE_PATHS_MAX) {
- fprintf(stderr, "Too many include paths "
- "specified, max. %u\n",
- INCLUDE_PATHS_MAX - 1);
+ if (nft_ctx_add_include_path(nft, optarg)) {
+ fprintf(stderr,
+ "Failed to add include path '%s'\n",
+ optarg);
exit(NFT_EXIT_FAILURE);
}
- nft->include_paths[nft->num_include_paths++] = optarg;
break;
case OPT_NUMERIC:
- if (++nft->output.numeric > NUMERIC_ALL) {
+ numeric = nft_ctx_output_get_numeric(nft);
+ if (numeric == NUMERIC_ALL) {
fprintf(stderr, "Too many numeric options "
"used, max. %u\n",
NUMERIC_ALL);
exit(NFT_EXIT_FAILURE);
}
+ nft_ctx_output_set_numeric(nft, numeric + 1);
break;
case OPT_STATELESS:
- nft->output.stateless++;
+ nft_ctx_output_set_stateless(nft, true);
break;
case OPT_IP2NAME:
- nft->output.ip2name++;
+ nft_ctx_output_set_ip2name(nft, true);
break;
case OPT_DEBUG:
+ debug_mask = nft_ctx_output_get_debug(nft);
for (;;) {
unsigned int i;
char *end;
@@ -231,7 +234,7 @@ int main(int argc, char * const *argv)
for (i = 0; i < array_size(debug_param); i++) {
if (strcmp(debug_param[i].name, optarg))
continue;
- nft->debug_mask |= debug_param[i].level;
+ debug_mask |= debug_param[i].level;
break;
}
@@ -245,12 +248,13 @@ int main(int argc, char * const *argv)
break;
optarg = end + 1;
}
+ nft_ctx_output_set_debug(nft, debug_mask);
break;
case OPT_HANDLE_OUTPUT:
- nft->output.handle++;
+ nft_ctx_output_set_handle(nft, true);
break;
case OPT_ECHO:
- nft->output.echo++;
+ nft_ctx_output_set_echo(nft, true);
break;
case OPT_INVALID:
exit(NFT_EXIT_FAILURE);
diff --git a/src/scanner.l b/src/scanner.l
index 594073660c6b1..ee09775ebf1d9 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -794,9 +794,7 @@ int scanner_include_file(struct nft_ctx *nft, void *scanner,
int ret = -1;
if (search_in_include_path(filename)) {
- for (i = 0; i < INCLUDE_PATHS_MAX; i++) {
- if (nft->include_paths[i] == NULL)
- break;
+ for (i = 0; i < nft->num_include_paths; i++) {
ret = snprintf(buf, sizeof(buf), "%s/%s",
nft->include_paths[i], filename);
if (ret < 0 || ret >= PATH_MAX) {
--
2.13.1
--
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