From: Ryan Bloom <rbb@apache.org>
Date: Wed, 11 Oct 2000 18:32:19 +0000 (+0000)
Subject: Cleanup the input filtering a bit.  This does not work with telnet
X-Git-Tag: APACHE_2_0_ALPHA_8~401
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3c11b9990cb220fbebefba1442a0632aff01e4d4;p=apache

Cleanup the input filtering a bit.  This does not work with telnet
currently, but it is a step in the right direction.  Input filtering
should be slowly improving from here on out.
Submitted by:	Greg Ames, Ryan Bloom, Jeff Trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86547 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/modules/http/http_core.c b/modules/http/http_core.c
index cebf978d4e..e309a74d04 100644
--- a/modules/http/http_core.c
+++ b/modules/http/http_core.c
@@ -3305,37 +3305,15 @@ static apr_status_t chunk_filter(ap_filter_t *f, ap_bucket_brigade *b)
 
 static int core_input_filter(ap_filter_t *f, ap_bucket_brigade *b)
 {
-    char *buff;
-    apr_ssize_t length = HUGE_STRING_LEN;
     apr_socket_t *csock = NULL;
-    apr_status_t rv;
     ap_bucket *e;
 
-    /* As soon as we have pool buckets, this should become a palloc. */
-    buff = apr_palloc(f->c->pool, HUGE_STRING_LEN);
     ap_bpop_socket(&csock, f->c->client);
-
-    rv = apr_recv(csock, buff, &length);
-    if (rv == APR_SUCCESS) {
-        if (length > 0) {
-            /* This should probably be a pool bucket, but using a transient is 
-             * actually okay here too.  We know the pool we are using will always 
-             * be available as long as the connection is open.
-             */
-            e = ap_bucket_create_transient(buff, length);
-            AP_BRIGADE_INSERT_TAIL(b, e);
-        }
-        else {
-            /* XXX need to trigger EOS/EOF processing;
-             * for now, return empty brigade because that is what
-             * getline() looks for */
-        }
-    }
-    else {
-        return rv;
-    }
+    e = ap_bucket_create_socket(csock);
+    AP_BRIGADE_INSERT_TAIL(b, e);
     return APR_SUCCESS;
 }
+
 /* Default filter.  This filter should almost always be used.  Its only job
  * is to send the headers if they haven't already been sent, and then send
  * the actual data.
diff --git a/modules/http/http_protocol.c b/modules/http/http_protocol.c
index 9d7b51f608..34117a2d89 100644
--- a/modules/http/http_protocol.c
+++ b/modules/http/http_protocol.c
@@ -868,7 +868,6 @@ apr_status_t http_filter(ap_filter_t *f, ap_bucket_brigade *b)
     char *buff;
     apr_ssize_t length;
     char *pos;
-    int state = 0;
     http_ctx_t *ctx = f->ctx;
     ap_bucket_brigade *bb;
     apr_status_t rv;
@@ -921,30 +920,19 @@ apr_status_t http_filter(ap_filter_t *f, ap_bucket_brigade *b)
             return rv;
         }
 
-        pos = buff + 1;
+        pos = buff;
         while (pos < buff + length) {
-
-            /* We are at the start of one line, but it actually has data. */
-            if ((*pos != ASCII_LF) && (*pos != ASCII_CR)) {
-                state = 0;
-            }
-            else {
-                if (*pos == ASCII_LF) {
-                    state++;
+            if (*pos == ASCII_LF) {
+                if (*(pos - 1) == ASCII_CR) {
+                    *(pos - 1) = ASCII_LF;
+                    *pos = '\0';
                 }
-            }
-            
-            if ((*pos == ASCII_LF) && (*(pos - 1) == ASCII_CR)) {
-                *(pos - 1) = ASCII_LF;
-                *pos = '\0';
-            }
-            pos++;
-            if (state == 2) {
-                e->split(e, pos - buff);
+                e->split(e, pos - buff + (*pos == '\0'));
                 bb = ap_brigade_split(b, AP_BUCKET_NEXT(e));
                 ctx->b = bb;
                 return APR_SUCCESS;
             }
+            pos++;
         }
     }
     return APR_SUCCESS;
@@ -1003,8 +991,8 @@ static int getline(char *s, int n, conn_rec *c, int fold)
     if (AP_BRIGADE_EMPTY(b)) {
         return -1;
     }
-    e = AP_BRIGADE_FIRST(b); 
     while (1) {
+        e = AP_BRIGADE_FIRST(b); 
         while (e->length == 0) {
             AP_BUCKET_REMOVE(e);
             ap_bucket_destroy(e);
@@ -1028,14 +1016,26 @@ static int getline(char *s, int n, conn_rec *c, int fold)
 	/* check for line end using ascii encoding, even on an ebcdic box
 	 * since this is raw protocol data fresh from the network
 	 */
+/*XXX This needs to be scrubbed, but Greg Ames is going to do a lot to this
+  *   code in a little while.  When he is done, it shouldn't need scrubbing
+  *   any more.
+  *
+  *   GREG, this is where the breakage is!!!!
+  */
         if ((toss = ap_strchr_c(temp, ASCII_LF)) != NULL) { 
-            length = toss - temp + 1;
-            e->split(e, length + (temp[length] == '\0'));
+            length = (toss - temp) + (pos - s) + 1;
+            e->split(e, length + (temp[length] == '\0')); 
             apr_cpystrn(pos, temp, length + 1);
-	    
             AP_BUCKET_REMOVE(e);
             ap_bucket_destroy(e);
         }
+        else {
+            apr_cpystrn(pos, temp, length + 1);
+            pos += length;
+            AP_BUCKET_REMOVE(e);
+            ap_bucket_destroy(e);
+            continue;
+        }
         c->input_data = b;
         e = AP_BRIGADE_FIRST(b); 
 /**** XXX