/*
*/
#include <stdarg.h>
+#include <stdlib.h>
#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include "common.h"
+#include <stdint.h>
+#include "../ld-acess_src/exports.h"
#ifdef __WINDOWS__
int DllMain(void)
{
+ fprintf(stderr, "TODO: Windows libacessnative setup\n");
return 0;
}
#endif
#ifdef __linux__
-int main(int argc, char *argv[], char **envp)
+int __attribute__ ((constructor(102))) libacessnative_init(int argc, char *argv[], char **envp);
+
+const char *getenv_p(char **envp, const char *name)
{
+ size_t namelen = strlen(name);
+ for(; *envp; envp ++)
+ {
+ if( strncmp(*envp, name, namelen) != 0 )
+ continue ;
+ if( (*envp)[namelen] != '=' )
+ continue ;
+ return (*envp)+namelen+1;
+ }
+ return 0;
+}
+
+int libacessnative_init(int argc, char *argv[], char **envp)
+{
+ Request_Preinit();
+
+ const char *preopens = getenv_p(envp, ENV_VAR_PREOPENS);
+ printf("preopens = %s\n", preopens);
+ if( preopens )
+ {
+ while( *preopens )
+ {
+ const char *splitter = strchr(preopens, ':');
+ size_t len;
+ if( !splitter ) {
+ len = strlen(preopens);
+ }
+ else {
+ len = splitter - preopens;
+ }
+ char path[len+1];
+ memcpy(path, preopens, len);
+ path[len] = 0;
+ int fd = acess__SysOpen(path, 6); // WRITE,READ,no EXEC
+ if( fd == -1 ) {
+ fprintf(stderr, "Unable to preopen '%s' errno=%i\n", path, acess__errno);
+ }
+
+ if( !splitter )
+ break;
+ preopens = splitter + 1;
+ }
+ }
+
+// if( !getenv(ENV_VAR_KEY)
+
return 0;
}
#endif
+int acessnative_spawn(const char *Binary, int SyscallID, const char * const * argv, const char * const * envp)
+{
+ int envc = 0;
+ while( envp && envp[envc++] )
+ envc ++;
+
+ // Set environment variables for libacess-native
+ // > ACESSNATIVE_KEY=`newID`
+ size_t keystr_len = snprintf(NULL, 0, "%s=%i", ENV_VAR_KEY, SyscallID);
+ char keystr[keystr_len+1];
+ snprintf(keystr, keystr_len+1, "%s=%i", ENV_VAR_KEY, SyscallID);
+ bool bKeyHit = false;
+
+ const char *newenv[envc+2+1];
+ int i = 0;
+ for( ; envp && envp[i]; i ++ )
+ {
+ const char *ev = envp[i];
+ if( strncmp(ev, ENV_VAR_KEY"=", sizeof(ENV_VAR_KEY"=")) == 0 ) {
+ ev = keystr;
+ bKeyHit = true;
+ }
+ newenv[i] = ev;
+ }
+ if( !bKeyHit )
+ newenv[i++] = keystr;
+ newenv[i++] = getenv("LD_LIBRARY_PATH") - (sizeof("LD_LIBRARY_PATH=")-1); // VERY hacky
+ newenv[i] = NULL;
+
+ // TODO: Detect native_spawn failing
+ return native_spawn(Binary, argv, newenv);
+}
void Debug(const char *format, ...)
{
printf("\n");
}
+void __libc_csu_fini()
+{
+}
+
+void __libc_csu_init()
+{
+}
+
+void __stack_chk_fail(void)
+{
+ fprintf(stderr, "__stack_chk_fail");
+ exit(1);
+}
+