AcessNative - Cleaned up ld-acess syscall debug

[tpg/acess2.git] / AcessNative / libacess-native.so_src / main.c

diff --git a/AcessNative/libacess-native.so_src/main.c b/AcessNative/libacess-native.so_src/main.c
index 4bf908b..900a14c 100644 (file)
--- a/AcessNative/libacess-native.so_src/main.c
+++ b/AcessNative/libacess-native.so_src/main.c
@@ -1,19 +1,75 @@
 /*
  */
 #include <stdarg.h>
+#include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+extern int     giSyscall_ClientID;
+extern void    Request_Preinit(void);
+extern int     acess__SysOpen(const char *Path, unsigned int flags);
 
 #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, "AN_PREOPEN");
+       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'\n", path);
+                       }
+                       
+                       if( !splitter )
+                               break;
+                       preopens = splitter + 1;
+               }
+       }
+
+//     if( !getenv("ACESSNATIVE_ID")
+       
        return 0;
 }
 #endif
@@ -39,3 +95,11 @@ void Warning(const char *format, ...)
        printf("\n");
 }
 
+void __libc_csu_fini()
+{
+}
+
+void __libc_csu_init()
+{
+}
+