* don't use sprintf while doing urlescappend; do it in place.

[citadel.git] / libcitadel / lib / stringbuf.c

diff --git a/libcitadel/lib/stringbuf.c b/libcitadel/lib/stringbuf.c
index 89d93fa881e72143a8f745993913d04ff0525532..8f37fada7d726a9c41532c3bc70da70b096d2d19 100644 (file)
--- a/libcitadel/lib/stringbuf.c
+++ b/libcitadel/lib/stringbuf.c
@@ -777,7 +777,15 @@ void StrBufUrlescAppend(StrBuf *OutBuf, const StrBuf *In, const char *PlainIn)
                        }
                }
                if (c == 1) {
-                       sprintf(pt,"%%%02X", *pch);
+                       char ch;
+                       ch = *pch;
+                       *pt = '%';
+                       *(pt + 1) =  ((ch & 0xF0) > 0x90) ?
+                               ('A' + ((ch & 0xF0) >> 4) - 0x0A) : 
+                               ('0' + ((ch & 0xF0) >> 4)) ;
+                       *(pt + 2) =  ((ch & 0x0F) > 0x09) ?
+                               ('A' + (ch & 0x0F) - 0x0A) : 
+                               ('0' + (ch & 0x0F)) ;
                        pt += 3;
                        OutBuf->BufUsed += 3;
                        pch ++;