X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdso%2Fdso_dl.c;h=dccb8e7ee83a4d678a7eab88e97cd4b9844deeee;hp=6dd1b197555ce3e3f4959d1106cdb53939f65b05;hb=63d3fc91065c32d5cfb366f1e7e413bc607697d6;hpb=51c8dc37dd4d655cf44f07d16dc985627a8e3577;ds=sidebyside

diff --git a/crypto/dso/dso_dl.c b/crypto/dso/dso_dl.c
index 6dd1b19755..dccb8e7ee8 100644
--- a/crypto/dso/dso_dl.c
+++ b/crypto/dso/dso_dl.c
@@ -1,5 +1,5 @@
-/* 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.
  */
 /* ====================================================================
@@ -84,6 +84,8 @@ static int dl_finish(DSO *dso);
 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 DSO_METHOD dso_meth_dl = {
 	"OpenSSL 'dl' shared library method",
@@ -98,8 +100,10 @@ static DSO_METHOD dso_meth_dl = {
 #endif
 	NULL, /* ctrl */
 	dl_name_converter,
+	dl_merger,
 	NULL, /* init */
-	NULL  /* finish */
+	NULL, /* finish */
+	dl_pathbyaddr
 	};
 
 DSO_METHOD *DSO_METHOD_dl(void)
@@ -126,10 +130,13 @@ static int dl_load(DSO *dso)
 		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))
@@ -198,6 +205,8 @@ static void *dl_bind_var(DSO *dso, const char *symname)
 	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);
@@ -227,29 +236,104 @@ static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname)
 	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,
@@ -257,10 +341,43 @@ static char *dl_name_converter(DSO *dso, const char *filename)
 		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;
+	}
 #endif /* DSO_DL */