X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Fzgdu.c;h=293c2e6ec38f26f0ddf08c2a0da05e0e7344929c;hb=60a702f390f7e2addfdab79f2328db3ba2897c8b;hp=543eda6d387ebd2d3797367d27aaae6f21bbae2a;hpb=da52cf68299952193806f8093c04e46d1bbf8375;p=yaz-moved-to-github.git

diff --git a/src/zgdu.c b/src/zgdu.c
index 543eda6..293c2e6 100644
--- a/src/zgdu.c
+++ b/src/zgdu.c
@@ -1,19 +1,31 @@
 /*
- * Copyright (c) 2002-2003, Index Data.
+ * Copyright (C) 1995-2005, Index Data ApS
  * See the file LICENSE for details.
  *
- * $Id: zgdu.c,v 1.5 2003-12-31 00:14:01 adam Exp $
+ * $Id: zgdu.c,v 1.12 2005-01-15 19:47:14 adam Exp $
  */
 
+/**
+ * \file zgdu.c
+ * \brief Implements HTTP and Z39.50 encoding and decoding.
+ */
+
+#include <ctype.h>
 #include <yaz/odr.h>
 #include <yaz/yaz-version.h>
 #include <yaz/yaz-iconv.h>
 #include <yaz/zgdu.h>
 
+#ifdef WIN32
+#define strncasecmp _strnicmp
+#define strcasecmp _stricmp
+#endif
+ 
 static int decode_headers_content(ODR o, int off, Z_HTTP_Header **headers,
                                   char **content_buf, int *content_len)
 {
     int i = off;
+    int chunked = 0;
 
     *headers = 0;
     while (i < o->size-1 && o->buf[i] == '\r')
@@ -52,6 +64,10 @@ static int decode_headers_content(ODR o, int off, Z_HTTP_Header **headers,
         memcpy ((*headers)->value, o->buf + po, i - po);
         (*headers)->value[i - po] = '\0';
         
+	if (!strcasecmp((*headers)->name, "Transfer-Encoding")
+	    &&
+	    !strcasecmp((*headers)->value, "chunked"))
+	    chunked = 1;
         headers = &(*headers)->next;
     }
     *headers = 0;
@@ -63,22 +79,75 @@ static int decode_headers_content(ODR o, int off, Z_HTTP_Header **headers,
     }
     i++;
 
-    if (i > o->size)
+    if (chunked)
     {
-        o->error = OHTTP;
-        return 0;
+	int off = 0;
+	
+	/* we know buffer will be smaller than o->size - i*/
+	*content_buf = (char*) odr_malloc(o, o->size - i);  
+	
+	while (1)
+	{
+	    /* chunk length .. */
+	    int chunk_len = 0;
+	    for (; i  < o->size-2; i++)
+		if (isdigit(o->buf[i]))
+		    chunk_len = chunk_len * 16 + 
+			(o->buf[i] - '0');
+		else if (isupper(o->buf[i]))
+		    chunk_len = chunk_len * 16 + 
+			(o->buf[i] - ('A'-10));
+		else if (islower(o->buf[i]))
+		    chunk_len = chunk_len * 16 + 
+			(o->buf[i] - ('a'-10));
+		else
+		    break;
+	    /* chunk extension ... */
+	    while (o->buf[i] != '\r' && o->buf[i+1] != '\n')
+	    {
+		if (i >= o->size-2)
+		{
+		    o->error = OHTTP;
+		    return 0;
+		}
+		i++;
+	    }
+	    i += 2;  /* skip CRLF */
+	    if (chunk_len == 0)
+		break;
+	    if (chunk_len < 0 || off + chunk_len > o->size)
+	    {
+		o->error = OHTTP;
+		return 0;
+	    }
+	    /* copy chunk .. */
+	    memcpy (*content_buf + off, o->buf + i, chunk_len);
+	    i += chunk_len + 2; /* skip chunk+CRLF */
+	    off += chunk_len;
+	}
+	if (!off)
+	    *content_buf = 0;
+	*content_len = off;
     }
-    else if (i == o->size)
-    {
-        *content_buf = 0;
-        *content_len = 0;
-    }
-    else 
+    else
     {
-        *content_len = o->size - i;
-        *content_buf = (char*) odr_malloc(o, *content_len + 1);
-        memcpy(*content_buf, o->buf + i, *content_len);
-        (*content_buf)[*content_len] = '\0';
+	if (i > o->size)
+	{
+	    o->error = OHTTP;
+	    return 0;
+	}
+	else if (i == o->size)
+	{
+	    *content_buf = 0;
+	    *content_len = 0;
+	}
+	else 
+	{
+	    *content_len = o->size - i;
+	    *content_buf = (char*) odr_malloc(o, *content_len + 1);
+	    memcpy(*content_buf, o->buf + i, *content_len);
+	    (*content_buf)[*content_len] = '\0';
+	}
     }
     return 1;
 }
@@ -188,6 +257,9 @@ int z_GDU (ODR o, Z_GDU **p, int opt, const char *name)
 
             hr = (*p)->u.HTTP_Response = (Z_HTTP_Response *)
                 odr_malloc(o, sizeof(*hr));
+            hr->content_buf = 0;
+	    hr->content_len = 0;
+
             po = i = 5;
             while (i < o->size-2 && o->buf[i] != ' ' && o->buf[i] != '\r')
                 i++;
@@ -313,9 +385,9 @@ int z_GDU (ODR o, Z_GDU **p, int opt, const char *name)
                           (*p)->u.HTTP_Response->content_len);
             if (o->direction == ODR_PRINT)
             {
-                fprintf(o->print, "-- HTTP response:\n%.*s\n", o->top - top0,
-                        o->buf + top0);
-                fprintf(o->print, "-- \n");
+                odr_printf(o, "-- HTTP response:\n%.*s\n", o->top - top0,
+			   o->buf + top0);
+                odr_printf(o, "-- \n");
             }
             break;
         case Z_GDU_HTTP_Request:
@@ -351,9 +423,9 @@ int z_GDU (ODR o, Z_GDU **p, int opt, const char *name)
                           (*p)->u.HTTP_Request->content_len);
             if (o->direction == ODR_PRINT)
             {
-                fprintf(o->print, "-- HTTP request:\n%.*s\n", o->top - top0,
+                odr_printf(o, "-- HTTP request:\n%.*s\n", o->top - top0,
                         o->buf + top0);
-                fprintf(o->print, "-- \n");
+                odr_printf(o, "-- \n");
             }
             break;
         case Z_GDU_Z3950: