-/* dso_dl.c */
-/* Written by Richard Levitte (levitte@openssl.org) for the OpenSSL
+/* dso_dl.c -*- mode:C; c-file-style: "eay" -*- */
+/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
* project 2000.
*/
/* ====================================================================
static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg);
#endif
static char *dl_name_converter(DSO *dso, const char *filename);
+static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2);
+static int dl_pathbyaddr(void *addr,char *path,int sz);
+static void *dl_globallookup(const char *name);
static DSO_METHOD dso_meth_dl = {
"OpenSSL 'dl' shared library method",
#endif
NULL, /* ctrl */
dl_name_converter,
+ dl_merger,
NULL, /* init */
- NULL /* finish */
+ NULL, /* finish */
+ dl_pathbyaddr,
+ dl_globallookup
};
DSO_METHOD *DSO_METHOD_dl(void)
DSOerr(DSO_F_DL_LOAD,DSO_R_NO_FILENAME);
goto err;
}
- ptr = shl_load(filename, BIND_IMMEDIATE, NULL);
+ ptr = shl_load(filename, BIND_IMMEDIATE |
+ (dso->flags&DSO_FLAG_NO_NAME_TRANSLATION?0:DYNAMIC_PATH), 0L);
if(ptr == NULL)
{
DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED);
+ ERR_add_error_data(4, "filename(", filename, "): ",
+ strerror(errno));
goto err;
}
if(!sk_push(dso->meth_data, (char *)ptr))
if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
{
DSOerr(DSO_F_DL_BIND_VAR,DSO_R_SYM_FAILURE);
+ ERR_add_error_data(4, "symname(", symname, "): ",
+ strerror(errno));
return(NULL);
}
return(sym);
if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
{
DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_SYM_FAILURE);
+ ERR_add_error_data(4, "symname(", symname, "): ",
+ strerror(errno));
return(NULL);
}
return((DSO_FUNC_TYPE)sym);
}
+static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2)
+ {
+ char *merged;
+
+ if(!filespec1 && !filespec2)
+ {
+ DSOerr(DSO_F_DL_MERGER,
+ ERR_R_PASSED_NULL_PARAMETER);
+ return(NULL);
+ }
+ /* If the first file specification is a rooted path, it rules.
+ same goes if the second file specification is missing. */
+ if (!filespec2 || filespec1[0] == '/')
+ {
+ merged = OPENSSL_malloc(strlen(filespec1) + 1);
+ if(!merged)
+ {
+ DSOerr(DSO_F_DL_MERGER,
+ ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ strcpy(merged, filespec1);
+ }
+ /* If the first file specification is missing, the second one rules. */
+ else if (!filespec1)
+ {
+ merged = OPENSSL_malloc(strlen(filespec2) + 1);
+ if(!merged)
+ {
+ DSOerr(DSO_F_DL_MERGER,
+ ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ strcpy(merged, filespec2);
+ }
+ else
+ /* This part isn't as trivial as it looks. It assumes that
+ the second file specification really is a directory, and
+ makes no checks whatsoever. Therefore, the result becomes
+ the concatenation of filespec2 followed by a slash followed
+ by filespec1. */
+ {
+ int spec2len, len;
+
+ spec2len = (filespec2 ? strlen(filespec2) : 0);
+ len = spec2len + (filespec1 ? strlen(filespec1) : 0);
+
+ if(filespec2 && filespec2[spec2len - 1] == '/')
+ {
+ spec2len--;
+ len--;
+ }
+ merged = OPENSSL_malloc(len + 2);
+ if(!merged)
+ {
+ DSOerr(DSO_F_DL_MERGER,
+ ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ strcpy(merged, filespec2);
+ merged[spec2len] = '/';
+ strcpy(&merged[spec2len + 1], filespec1);
+ }
+ return(merged);
+ }
+
/* This function is identical to the one in dso_dlfcn.c, but as it is highly
* unlikely that both the "dl" *and* "dlfcn" variants are being compiled at the
- * same time, there's no great duplicating the code. Figuring out an elegant way
- * to share one copy of the code would be more difficult and would not leave the
- * implementations independant. */
+ * same time, there's no great duplicating the code. Figuring out an elegant
+ * way to share one copy of the code would be more difficult and would not
+ * leave the implementations independant. */
+#if defined(__hpux)
+static const char extension[] = ".sl";
+#else
+static const char extension[] = ".so";
+#endif
static char *dl_name_converter(DSO *dso, const char *filename)
{
char *translated;
- int len, transform;
+ int len, rsize, transform;
len = strlen(filename);
+ rsize = len + 1;
transform = (strstr(filename, "/") == NULL);
- if(transform)
- /* We will convert this to "lib%s.so" */
- translated = OPENSSL_malloc(len + 7);
- else
- /* We will simply duplicate filename */
- translated = OPENSSL_malloc(len + 1);
+ {
+ /* We will convert this to "%s.s?" or "lib%s.s?" */
+ rsize += strlen(extension);/* The length of ".s?" */
+ 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_DL_NAME_CONVERTER,
return(NULL);
}
if(transform)
- sprintf(translated, "lib%s.so", filename);
+ {
+ if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
+ sprintf(translated, "lib%s%s", filename, extension);
+ else
+ sprintf(translated, "%s%s", filename, extension);
+ }
else
sprintf(translated, "%s", filename);
return(translated);
}
+static int dl_pathbyaddr(void *addr,char *path,int sz)
+ {
+ struct shl_descriptor inf;
+ int i,len;
+
+ if (addr == NULL)
+ {
+ union { int(*f)(void*,char*,int); void *p; } t =
+ { dl_pathbyaddr };
+ addr = t.p;
+ }
+
+ for (i=-1;shl_get_r(i,&inf)==0;i++)
+ {
+ if (((size_t)addr >= inf.tstart && (size_t)addr < inf.tend) ||
+ ((size_t)addr >= inf.dstart && (size_t)addr < inf.dend))
+ {
+ len = (int)strlen(inf.filename);
+ if (sz <= 0) return len+1;
+ if (len >= sz) len=sz-1;
+ memcpy(path,inf.filename,len);
+ path[len++] = 0;
+ return len;
+ }
+ }
+
+ return -1;
+ }
+
+static void *dl_globallookup(const char *name)
+ {
+ void *ret;
+ shl_t h = NULL;
+
+ return shl_findsym(&h,name,TYPE_UNDEFINED,&ret) ? NULL : ret;
+ }
#endif /* DSO_DL */