> Ben: have a look at how mod_rewrite accesses its own
> ap_register_rewrite_mapfunc via
So Rainer, I just quickly wrote my module, it works, many thanks for your help.
Below is my code, I just have 2 questions regarding it :
1 - do I need to "free(pw)" ?
2 - is "key = apr_palloc(r->pool, 7)" the right method ? Doing this I want to
avoid buffer overflow in case of uid/gid greater in length than the key
parameter.
Thank you very much,
Cheers,
Ben
#include "http_core.h"
#include "mod_rewrite.h"
#include <pwd.h>
static char *uid(request_rec *r, char *key)
{
struct passwd *pw;
if((pw = getpwnam(key)) == NULL)
{
*key = '\0';
}
else
{
key = apr_palloc(r->pool, 7);
sprintf(key, "%d", pw->pw_uid);
}
return key;
}
static char *gid(request_rec *r, char *key)
{
int uid=atoi(key);
struct passwd *pw;
if((pw = getpwuid(uid)) == NULL)
{
*key = '\0';
}
else
{
key = apr_palloc(r->pool, 7);
sprintf(key, "%d", pw->pw_gid);
return key;
}
return key;
}
static void register_hooks(apr_pool_t *pool)
{
APR_OPTIONAL_FN_TYPE(ap_register_rewrite_mapfunc) *map_pfn_register;
map_pfn_register =
APR_RETRIEVE_OPTIONAL_FN(ap_register_rewrite_mapfunc);
map_pfn_register("uid", uid);
map_pfn_register("gid", gid);
}
AP_DECLARE_MODULE(test) = {
STANDARD20_MODULE_STUFF,NULL,NULL,NULL,NULL,NULL,register_hooks
};
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