On VMS, the norm is still that symbols are uppercased, so for now it's better
[openssl.git] / crypto / dso / dso_dlfcn.c
index 07bbf37..1a19164 100644 (file)
@@ -74,7 +74,7 @@ DSO_METHOD *DSO_METHOD_dlfcn(void)
 /* Part of the hack in "dlfcn_load" ... */
 #define DSO_MAX_TRANSLATED_SIZE 256
 
-static int dlfcn_load(DSO *dso, const char *filename);
+static int dlfcn_load(DSO *dso);
 static int dlfcn_unload(DSO *dso);
 static void *dlfcn_bind_var(DSO *dso, const char *symname);
 static DSO_FUNC_TYPE dlfcn_bind_func(DSO *dso, const char *symname);
@@ -84,6 +84,7 @@ static int dlfcn_init(DSO *dso);
 static int dlfcn_finish(DSO *dso);
 static long dlfcn_ctrl(DSO *dso, int cmd, long larg, void *parg);
 #endif
+static char *dlfcn_name_converter(DSO *dso, const char *filename);
 
 static DSO_METHOD dso_meth_dlfcn = {
        "OpenSSL 'dlfcn' shared library method",
@@ -97,6 +98,7 @@ static DSO_METHOD dso_meth_dlfcn = {
        NULL, /* unbind_func */
 #endif
        NULL, /* ctrl */
+       dlfcn_name_converter,
        NULL, /* init */
        NULL  /* finish */
        };
@@ -130,41 +132,40 @@ DSO_METHOD *DSO_METHOD_dlfcn(void)
  * (i) the handle (void*) returned from dlopen().
  */
 
-static int dlfcn_load(DSO *dso, const char *filename)
+static int dlfcn_load(DSO *dso)
        {
-       void *ptr;
-       char translated[DSO_MAX_TRANSLATED_SIZE];
-       int len;
+       void *ptr = NULL;
+       /* See applicable comments in dso_dl.c */
+       char *filename = DSO_convert_filename(dso, NULL);
 
-       /* NB: This is a hideous hack, but I'm not yet sure what
-        * to replace it with. This attempts to convert any filename,
-        * that looks like it has no path information, into a
-        * translated form, e. "blah" -> "libblah.so" */
-       len = strlen(filename);
-       if((dso->flags & DSO_FLAG_NAME_TRANSLATION) &&
-                       (len + 6 < DSO_MAX_TRANSLATED_SIZE) &&
-                       (strstr(filename, "/") == NULL))
-               {
-               sprintf(translated, "lib%s.so", filename);
-               ptr = dlopen(translated, DLOPEN_FLAG);
-               }
-       else
+       if(filename == NULL)
                {
-               ptr = dlopen(filename, DLOPEN_FLAG);
+               DSOerr(DSO_F_DLFCN_LOAD,DSO_R_NO_FILENAME);
+               goto err;
                }
+       ptr = dlopen(filename, DLOPEN_FLAG);
        if(ptr == NULL)
                {
                DSOerr(DSO_F_DLFCN_LOAD,DSO_R_LOAD_FAILED);
-               return(0);
+               ERR_add_error_data(4, "filename(", filename, "): ", dlerror());
+               goto err;
                }
        if(!sk_push(dso->meth_data, (char *)ptr))
                {
                DSOerr(DSO_F_DLFCN_LOAD,DSO_R_STACK_ERROR);
-               dlclose(ptr);
-               return(0);
+               goto err;
                }
+       /* Success */
+       dso->loaded_filename = filename;
        return(1);
-       }
+err:
+       /* Cleanup! */
+       if(filename != NULL)
+               OPENSSL_free(filename);
+       if(ptr != NULL)
+               dlclose(ptr);
+       return(0);
+}
 
 static int dlfcn_unload(DSO *dso)
        {
@@ -214,6 +215,7 @@ static void *dlfcn_bind_var(DSO *dso, const char *symname)
        if(sym == NULL)
                {
                DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_SYM_FAILURE);
+               ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
                return(NULL);
                }
        return(sym);
@@ -244,9 +246,44 @@ static DSO_FUNC_TYPE dlfcn_bind_func(DSO *dso, const char *symname)
        if(sym == NULL)
                {
                DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_SYM_FAILURE);
+               ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
                return(NULL);
                }
        return(sym);
        }
 
+static char *dlfcn_name_converter(DSO *dso, const char *filename)
+       {
+       char *translated;
+       int len, rsize, transform;
+
+       len = strlen(filename);
+       rsize = len + 1;
+       transform = (strstr(filename, "/") == NULL);
+       if(transform)
+               {
+               /* We will convert this to "%s.so" or "lib%s.so" */
+               rsize += 3;     /* The length of ".so" */
+               if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
+                       rsize += 3; /* The length of "lib" */
+               }
+       translated = OPENSSL_malloc(rsize);
+       if(translated == NULL)
+               {
+               DSOerr(DSO_F_DLFCN_NAME_CONVERTER,
+                               DSO_R_NAME_TRANSLATION_FAILED);
+               return(NULL);
+               }
+       if(transform)
+               {
+               if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
+                       sprintf(translated, "lib%s.so", filename);
+               else
+                       sprintf(translated, "%s.so", filename);
+               }
+       else
+               sprintf(translated, "%s", filename);
+       return(translated);
+       }
+
 #endif /* DSO_DLFCN */