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settings: Increase buffer size for key patterns/parts when looking up settings

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The buffer size for individual parts of a key now match the maximum length
of names in VICI. The full pattern should accommodate several long names
(e.g. for connections and child connections in swanctl) even if no
printf-specifiers are used.
This commit is contained in:
Tobias Brunner
2025-11-19 10:37:55 +01:00
parent 9b0b1cb24e
commit 9fe4f9fc9f
1 changed files with 17 additions and 6 deletions
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src/libstrongswan/settings/settings.c
+17 -6
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@@ -43,6 +43,17 @@ typedef struct private_settings_t private_settings_t;
bool settings_parser_parse_file(section_t *root, char *name);
bool settings_parser_parse_string(section_t *root, char *settings);
/**
* Buffer size for complete key name/pattern when looking up settings.
*/
#define KEY_FULL_BUF_LEN 2048
/**
* Buffer size for a single part of a key name (matches the maximum length
* for names in VICI).
*/
#define KEY_PART_BUF_LEN 257
/**
* Private data of settings
*/
@@ -287,7 +298,7 @@ static void find_sections_buffered(private_settings_t *this, section_t *section,
static section_t *ensure_section(private_settings_t *this, section_t *section,
const char *key, va_list args)
{
char buf[128], keybuf[512];
char buf[KEY_PART_BUF_LEN], keybuf[KEY_FULL_BUF_LEN];
if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
{
@@ -304,7 +315,7 @@ static section_t *ensure_section(private_settings_t *this, section_t *section,
static array_t *find_sections(private_settings_t *this, section_t *section,
char *key, va_list args, array_t **sections)
{
char buf[128], keybuf[512];
char buf[KEY_PART_BUF_LEN], keybuf[KEY_FULL_BUF_LEN];
if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
{
@@ -476,7 +487,7 @@ static void remove_value_buffered(private_settings_t *this, section_t *section,
void settings_remove_value(settings_t *settings, char *key, ...)
{
private_settings_t *this = (private_settings_t*)settings;
char buf[128], keybuf[512];
char buf[KEY_PART_BUF_LEN], keybuf[KEY_FULL_BUF_LEN];
va_list args;
if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
@@ -499,7 +510,7 @@ void settings_remove_value(settings_t *settings, char *key, ...)
static char *find_value(private_settings_t *this, section_t *section,
char *key, va_list args)
{
char buf[128], keybuf[512], *value = NULL;
char buf[KEY_PART_BUF_LEN], keybuf[KEY_FULL_BUF_LEN], *value = NULL;
array_t *sections = NULL;
kv_t *kv;
@@ -525,7 +536,7 @@ static char *find_value(private_settings_t *this, section_t *section,
static void set_value(private_settings_t *this, section_t *section,
char *key, va_list args, char *value)
{
char buf[128], keybuf[512];
char buf[KEY_PART_BUF_LEN], keybuf[KEY_FULL_BUF_LEN];
kv_t *kv;
if (snprintf(keybuf, sizeof(keybuf), "%s", key) >= sizeof(keybuf))
@@ -939,7 +950,7 @@ METHOD(settings_t, add_fallback, void,
{
section_t *section;
va_list args;
char buf[512];
char buf[KEY_FULL_BUF_LEN];
this->lock->write_lock(this->lock);
va_start(args, fallback);