+{
+ shl_t ptr;
+ void *sym;
+
+ if ((dso == NULL) || (symname == NULL)) {
+ DSOerr(DSO_F_DL_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ if (sk_num(dso->meth_data) < 1) {
+ DSOerr(DSO_F_DL_BIND_FUNC, DSO_R_STACK_ERROR);
+ return (NULL);
+ }
+ ptr = (shl_t) sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
+ if (ptr == NULL) {
+ DSOerr(DSO_F_DL_BIND_FUNC, DSO_R_NULL_HANDLE);
+ return (NULL);
+ }
+ 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 == NULL) {
+ 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 == NULL) {
+ 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 == NULL) {
+ 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 independent.
+ */
+# 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, rsize, transform;
+
+ len = strlen(filename);
+ rsize = len + 1;
+ transform = (strstr(filename, "/") == NULL);
+ {
+ /* 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, DSO_R_NAME_TRANSLATION_FAILED);
+ return (NULL);
+ }
+ if (transform) {
+ 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 */