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curl: Dynamically query supported protocols and register appropriate features

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This commit is contained in:
Martin Willi
2014-09-24 11:35:59 +02:00
parent 6eaec1e349
commit d717b42b51
1 changed files with 64 additions and 10 deletions
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src/libstrongswan/plugins/curl/curl_plugin.c
+64 -10
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@@ -32,8 +32,61 @@ struct private_curl_plugin_t {
* public functions
*/
curl_plugin_t public;
/**
* Supported features, CURL protocols + 1
*/
plugin_feature_t *features;
/**
* Number of supported features
*/
int count;
};
/**
* Append a feature to supported feature list
*/
static void add_feature(private_curl_plugin_t *this, plugin_feature_t f)
{
this->features = realloc(this->features, ++this->count * sizeof(f));
this->features[this->count - 1] = f;
}
/**
* Get supported protocols, build plugin feature set
*/
static bool query_protocols(private_curl_plugin_t *this)
{
static char *protos[] = {
/* protocols we are interested in, suffixed with "://" */
"file://", "http://", "https://", "ftp://",
};
curl_version_info_data *info;
int i, j;
add_feature(this, PLUGIN_REGISTER(FETCHER, curl_fetcher_create));
info = curl_version_info(CURLVERSION_NOW);
for (i = 0; info->protocols[i]; i++)
{
for (j = 0; j < countof(protos); j++)
{
if (strlen(info->protocols[i]) == strlen(protos[j]) - strlen("://"))
{
if (strneq(info->protocols[i], protos[j],
strlen(protos[j]) - strlen("://")))
{
add_feature(this, PLUGIN_PROVIDE(FETCHER, protos[j]));
}
}
}
}
return this->count > 1;
}
METHOD(plugin_t, get_name, char*,
private_curl_plugin_t *this)
{
@@ -43,21 +96,15 @@ METHOD(plugin_t, get_name, char*,
METHOD(plugin_t, get_features, int,
private_curl_plugin_t *this, plugin_feature_t *features[])
{
static plugin_feature_t f[] = {
PLUGIN_REGISTER(FETCHER, curl_fetcher_create),
PLUGIN_PROVIDE(FETCHER, "file://"),
PLUGIN_PROVIDE(FETCHER, "http://"),
PLUGIN_PROVIDE(FETCHER, "https://"),
PLUGIN_PROVIDE(FETCHER, "ftp://"),
};
*features = f;
return countof(f);
*features = this->features;
return this->count;
}
METHOD(plugin_t, destroy, void,
private_curl_plugin_t *this)
{
curl_global_cleanup();
free(this->features);
free(this);
}
@@ -92,6 +139,13 @@ plugin_t *curl_plugin_create()
destroy(this);
return NULL;
}
if (!query_protocols(this))
{
DBG1(DBG_LIB, "no usable CURL protocols found, curl disabled");
destroy(this);
return NULL;
}
return &this->public.plugin;
}