CURL_DOES_CONVERSIONS: cleanup

Massively reduce #ifdefs all over (23 #ifdef lines less so far)
Moved conversion-specific code to non-ascii.c

25 files changed, 469 insertions, 420 deletions

diff --git a/lib/Makefile.inc b/lib/Makefile.inc
index 65f2d7e2b..0e77b68d6 100644
--- a/lib/Makefile.inc
+++ b/lib/Makefile.inc
@@ -21,7 +21,8 @@ CSOURCES = file.c timeval.c base64.c hostip.c progress.c formdata.c	\
   socks_gssapi.c socks_sspi.c curl_sspi.c slist.c nonblock.c		\
   curl_memrchr.c imap.c pop3.c smtp.c pingpong.c rtsp.c curl_threads.c	\
   warnless.c hmac.c polarssl.c curl_rtmp.c openldap.c curl_gethostname.c\
-  gopher.c axtls.c idn_win32.c http_negotiate_sspi.c cyassl.c http_proxy.c
+  gopher.c axtls.c idn_win32.c http_negotiate_sspi.c cyassl.c http_proxy.c \
+  non-ascii.c
 
 HHEADERS = arpa_telnet.h netrc.h file.h timeval.h qssl.h hostip.h	\
   progress.h formdata.h cookie.h http.h sendf.h ftp.h url.h dict.h	\
@@ -36,5 +37,5 @@ HHEADERS = arpa_telnet.h netrc.h file.h timeval.h qssl.h hostip.h	\
   curl_base64.h rawstr.h curl_addrinfo.h curl_sspi.h slist.h nonblock.h	\
   curl_memrchr.h imap.h pop3.h smtp.h pingpong.h rtsp.h curl_threads.h	\
   warnless.h curl_hmac.h polarssl.h curl_rtmp.h curl_gethostname.h      \
-  gopher.h axtls.h cyassl.h http_proxy.h
+  gopher.h axtls.h cyassl.h http_proxy.h non-ascii.h
 
diff --git a/lib/base64.c b/lib/base64.c
index 66ddb329c..0c492dc45 100644
--- a/lib/base64.c
+++ b/lib/base64.c
@@ -31,10 +31,10 @@
 #include <curl/mprintf.h>
 
 #include "urldata.h" /* for the SessionHandle definition */
-#include "easyif.h"  /* for Curl_convert_... prototypes */
 #include "warnless.h"
 #include "curl_base64.h"
 #include "curl_memory.h"
+#include "non-ascii.h"
 
 /* include memdebug.h last */
 #include "memdebug.h"
@@ -146,9 +146,7 @@ size_t Curl_base64_encode(struct SessionHandle *data,
   int inputparts;
   char *output;
   char *base64data;
-#ifdef CURL_DOES_CONVERSIONS
   char *convbuf = NULL;
-#endif
 
   const char *indata = inputbuff;
 
@@ -161,29 +159,16 @@ size_t Curl_base64_encode(struct SessionHandle *data,
   if(NULL == output)
     return 0;
 
-#ifdef CURL_DOES_CONVERSIONS
   /*
    * The base64 data needs to be created using the network encoding
    * not the host encoding.  And we can't change the actual input
    * so we copy it to a buffer, translate it, and use that instead.
    */
-  if(data) {
-    convbuf = malloc(insize);
-    if(!convbuf) {
-      free(output);
-      return 0;
-    }
-    memcpy(convbuf, indata, insize);
-    if(CURLE_OK != Curl_convert_to_network(data, convbuf, insize)) {
-      free(convbuf);
-      free(output);
-      return 0;
-    }
-    indata = convbuf; /* switch to the converted buffer */
-  }
-#else
-  (void)data;
-#endif
+  if(Curl_convert_clone(data, indata, insize, &convbuf))
+    return 0;
+
+  if(convbuf)
+    indata = (char *)convbuf;
 
   while(insize > 0) {
     for (i = inputparts = 0; i < 3; i++) {
@@ -229,10 +214,9 @@ size_t Curl_base64_encode(struct SessionHandle *data,
   *output=0;
   *outptr = base64data; /* make it return the actual data memory */
 
-#ifdef CURL_DOES_CONVERSIONS
-  if(data)
+  if(convbuf)
     free(convbuf);
-#endif
+
   return strlen(base64data); /* return the length of the new data */
 }
 /* ---- End of Base64 Encoding ---- */
diff --git a/lib/easy.c b/lib/easy.c
index 7015eced2..05d8ded9d 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -85,22 +85,11 @@
 #include "connect.h" /* for Curl_getconnectinfo */
 #include "slist.h"
 #include "curl_rand.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
 
-#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
-#include <iconv.h>
-/* set default codesets for iconv */
-#ifndef CURL_ICONV_CODESET_OF_NETWORK
-#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
-#endif
-#ifndef CURL_ICONV_CODESET_FOR_UTF8
-#define CURL_ICONV_CODESET_FOR_UTF8   "UTF-8"
-#endif
-#define ICONV_ERROR  (size_t)-1
-#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
-
 /* The last #include file should be: */
 #include "memdebug.h"
 
@@ -694,14 +683,7 @@ CURL *curl_easy_duphandle(CURL *incurl)
     goto fail;
 #endif
 
-#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
-  outcurl->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
-                                   CURL_ICONV_CODESET_OF_NETWORK);
-  outcurl->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
-                                    CURL_ICONV_CODESET_OF_HOST);
-  outcurl->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
-                                CURL_ICONV_CODESET_FOR_UTF8);
-#endif
+  Curl_convert_setup(outcurl);
 
   Curl_easy_initHandleData(outcurl);
 
@@ -863,196 +845,6 @@ CURLcode curl_easy_pause(CURL *curl, int action)
   return result;
 }
 
-#ifdef CURL_DOES_CONVERSIONS
-/*
- * Curl_convert_to_network() is an internal function
- * for performing ASCII conversions on non-ASCII platforms.
- */
-CURLcode Curl_convert_to_network(struct SessionHandle *data,
-                                 char *buffer, size_t length)
-{
-  CURLcode rc;
-
-  if(data->set.convtonetwork) {
-    /* use translation callback */
-    rc = data->set.convtonetwork(buffer, length);
-    if(rc != CURLE_OK) {
-      failf(data,
-            "CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %d: %s",
-            (int)rc, curl_easy_strerror(rc));
-    }
-    return(rc);
-  }
-  else {
-#ifdef HAVE_ICONV
-    /* do the translation ourselves */
-    char *input_ptr, *output_ptr;
-    size_t in_bytes, out_bytes, rc;
-    int error;
-
-    /* open an iconv conversion descriptor if necessary */
-    if(data->outbound_cd == (iconv_t)-1) {
-      data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
-                                     CURL_ICONV_CODESET_OF_HOST);
-      if(data->outbound_cd == (iconv_t)-1) {
-        error = ERRNO;
-        failf(data,
-              "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
-               CURL_ICONV_CODESET_OF_NETWORK,
-               CURL_ICONV_CODESET_OF_HOST,
-               error, strerror(error));
-        return CURLE_CONV_FAILED;
-      }
-    }
-    /* call iconv */
-    input_ptr = output_ptr = buffer;
-    in_bytes = out_bytes = length;
-    rc = iconv(data->outbound_cd, (const char**)&input_ptr, &in_bytes,
-               &output_ptr, &out_bytes);
-    if((rc == ICONV_ERROR) || (in_bytes != 0)) {
-      error = ERRNO;
-      failf(data,
-        "The Curl_convert_to_network iconv call failed with errno %i: %s",
-             error, strerror(error));
-      return CURLE_CONV_FAILED;
-    }
-#else
-    failf(data, "CURLOPT_CONV_TO_NETWORK_FUNCTION callback required");
-    return CURLE_CONV_REQD;
-#endif /* HAVE_ICONV */
-  }
-
-  return CURLE_OK;
-}
-
-/*
- * Curl_convert_from_network() is an internal function
- * for performing ASCII conversions on non-ASCII platforms.
- */
-CURLcode Curl_convert_from_network(struct SessionHandle *data,
-                                      char *buffer, size_t length)
-{
-  CURLcode rc;
-
-  if(data->set.convfromnetwork) {
-    /* use translation callback */
-    rc = data->set.convfromnetwork(buffer, length);
-    if(rc != CURLE_OK) {
-      failf(data,
-            "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %d: %s",
-            (int)rc, curl_easy_strerror(rc));
-    }
-    return(rc);
-  }
-  else {
-#ifdef HAVE_ICONV
-    /* do the translation ourselves */
-    char *input_ptr, *output_ptr;
-    size_t in_bytes, out_bytes, rc;
-    int error;
-
-    /* open an iconv conversion descriptor if necessary */
-    if(data->inbound_cd == (iconv_t)-1) {
-      data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
-                                    CURL_ICONV_CODESET_OF_NETWORK);
-      if(data->inbound_cd == (iconv_t)-1) {
-        error = ERRNO;
-        failf(data,
-              "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
-              CURL_ICONV_CODESET_OF_HOST,
-              CURL_ICONV_CODESET_OF_NETWORK,
-              error, strerror(error));
-        return CURLE_CONV_FAILED;
-      }
-    }
-    /* call iconv */
-    input_ptr = output_ptr = buffer;
-    in_bytes = out_bytes = length;
-    rc = iconv(data->inbound_cd, (const char **)&input_ptr, &in_bytes,
-               &output_ptr, &out_bytes);
-    if((rc == ICONV_ERROR) || (in_bytes != 0)) {
-      error = ERRNO;
-      failf(data,
-            "The Curl_convert_from_network iconv call failed with errno %i: %s",
-            error, strerror(error));
-      return CURLE_CONV_FAILED;
-    }
-#else
-    failf(data, "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback required");
-    return CURLE_CONV_REQD;
-#endif /* HAVE_ICONV */
-  }
-
-  return CURLE_OK;
-}
-
-/*
- * Curl_convert_from_utf8() is an internal function
- * for performing UTF-8 conversions on non-ASCII platforms.
- */
-CURLcode Curl_convert_from_utf8(struct SessionHandle *data,
-                                     char *buffer, size_t length)
-{
-  CURLcode rc;
-
-  if(data->set.convfromutf8) {
-    /* use translation callback */
-    rc = data->set.convfromutf8(buffer, length);
-    if(rc != CURLE_OK) {
-      failf(data,
-            "CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %d: %s",
-            (int)rc, curl_easy_strerror(rc));
-    }
-    return(rc);
-  }
-  else {
-#ifdef HAVE_ICONV
-    /* do the translation ourselves */
-    const char *input_ptr;
-    char *output_ptr;
-    size_t in_bytes, out_bytes, rc;
-    int error;
-
-    /* open an iconv conversion descriptor if necessary */
-    if(data->utf8_cd == (iconv_t)-1) {
-      data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
-                                 CURL_ICONV_CODESET_FOR_UTF8);
-      if(data->utf8_cd == (iconv_t)-1) {
-        error = ERRNO;
-        failf(data,
-              "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
-              CURL_ICONV_CODESET_OF_HOST,
-              CURL_ICONV_CODESET_FOR_UTF8,
-              error, strerror(error));
-        return CURLE_CONV_FAILED;
-      }
-    }
-    /* call iconv */
-    input_ptr = output_ptr = buffer;
-    in_bytes = out_bytes = length;
-    rc = iconv(data->utf8_cd, &input_ptr, &in_bytes,
-               &output_ptr, &out_bytes);
-    if((rc == ICONV_ERROR) || (in_bytes != 0)) {
-      error = ERRNO;
-      failf(data,
-            "The Curl_convert_from_utf8 iconv call failed with errno %i: %s",
-            error, strerror(error));
-      return CURLE_CONV_FAILED;
-    }
-    if(output_ptr < input_ptr) {
-      /* null terminate the now shorter output string */
-      *output_ptr = 0x00;
-    }
-#else
-    failf(data, "CURLOPT_CONV_FROM_UTF8_FUNCTION callback required");
-    return CURLE_CONV_REQD;
-#endif /* HAVE_ICONV */
-  }
-
-  return CURLE_OK;
-}
-
-#endif /* CURL_DOES_CONVERSIONS */
 
 static CURLcode easy_connection(struct SessionHandle *data,
                                 curl_socket_t *sfd,
diff --git a/lib/easyif.h b/lib/easyif.h
index 8a0a51cc1..d05b7d610 100644
--- a/lib/easyif.h
+++ b/lib/easyif.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2006, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -29,11 +29,4 @@ void Curl_easy_addmulti(struct SessionHandle *data, void *multi);
 
 void Curl_easy_initHandleData(struct SessionHandle *data);
 
-CURLcode Curl_convert_to_network(struct SessionHandle *data,
-                                 char *buffer, size_t length);
-CURLcode Curl_convert_from_network(struct SessionHandle *data,
-                                 char *buffer, size_t length);
-CURLcode Curl_convert_from_utf8(struct SessionHandle *data,
-                                 char *buffer, size_t length);
-
 #endif /* __EASYIF_H */
diff --git a/lib/escape.c b/lib/escape.c
index 735e1d8a7..4e8dd6e4c 100644
--- a/lib/escape.c
+++ b/lib/escape.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -31,10 +31,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include "curl_memory.h"
-/* urldata.h and easyif.h are included for Curl_convert_... prototypes */
 #include "urldata.h"
-#include "easyif.h"
 #include "warnless.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -91,10 +90,6 @@ char *curl_easy_escape(CURL *handle, const char *string, int inlength)
   int strindex=0;
   size_t length;
 
-#ifndef CURL_DOES_CONVERSIONS
-  /* avoid compiler warnings */
-  (void)handle;
-#endif
   ns = malloc(alloc);
   if(!ns)
     return NULL;
@@ -122,15 +117,11 @@ char *curl_easy_escape(CURL *handle, const char *string, int inlength)
         }
       }
 
-#ifdef CURL_DOES_CONVERSIONS
-/* escape sequences are always in ASCII so convert them on non-ASCII hosts */
-      if(!handle ||
-          (Curl_convert_to_network(handle, &in, 1) != CURLE_OK)) {
+      if(Curl_convert_to_network(handle, &in, 1)) {
         /* Curl_convert_to_network calls failf if unsuccessful */
         free(ns);
         return NULL;
       }
-#endif /* CURL_DOES_CONVERSIONS */
 
       snprintf(&ns[strindex], 4, "%%%02X", in);
 
@@ -157,11 +148,7 @@ char *curl_easy_unescape(CURL *handle, const char *string, int length,
   int strindex=0;
   unsigned long hex;
 
-#ifndef CURL_DOES_CONVERSIONS
-  /* avoid compiler warnings */
-  (void)handle;
-#endif
-  if( !ns )
+  if(!ns)
     return NULL;
 
   while(--alloc > 0) {
@@ -178,15 +165,11 @@ char *curl_easy_unescape(CURL *handle, const char *string, int length,
 
       in = curlx_ultouc(hex); /* this long is never bigger than 255 anyway */
 
-#ifdef CURL_DOES_CONVERSIONS
-/* escape sequences are always in ASCII so convert them on non-ASCII hosts */
-      if(!handle ||
-          (Curl_convert_from_network(handle, &in, 1) != CURLE_OK)) {
+      if(Curl_convert_from_network(handle, &in, 1)) {
         /* Curl_convert_from_network calls failf if unsuccessful */
         free(ns);
         return NULL;
       }
-#endif /* CURL_DOES_CONVERSIONS */
 
       string+=2;
       alloc-=2;
diff --git a/lib/formdata.c b/lib/formdata.c
index 5ec3e384e..f221ae966 100644
--- a/lib/formdata.c
+++ b/lib/formdata.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -118,7 +118,6 @@ Content-Disposition: form-data; name="FILECONTENT"
 #include <libgen.h>
 #endif
 #include "urldata.h" /* for struct SessionHandle */
-#include "easyif.h" /* for Curl_convert_... prototypes */
 #include "formdata.h"
 #include "curl_rand.h"
 #include "strequal.h"
@@ -461,8 +460,10 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
        */
     case CURLFORM_PTRNAME:
 #ifdef CURL_DOES_CONVERSIONS
-      /* treat CURLFORM_PTR like CURLFORM_COPYNAME so we'll
-         have safe memory for the eventual conversion */
+      /* Treat CURLFORM_PTR like CURLFORM_COPYNAME so that libcurl will copy
+       * the data in all cases so that we'll have safe memory for the eventual
+       * conversion.
+       */
 #else
       current_form->flags |= HTTPPOST_PTRNAME; /* fall through */
 #endif
@@ -934,36 +935,6 @@ void Curl_formclean(struct FormData **form_ptr)
   *form_ptr = NULL;
 }
 
-#ifdef CURL_DOES_CONVERSIONS
-/*
- * Curl_formcovert() is used from http.c, this converts any
-   form items that need to be sent in the network encoding.
-   Returns CURLE_OK on success.
- */
-CURLcode Curl_formconvert(struct SessionHandle *data, struct FormData *form)
-{
-  struct FormData *next;
-  CURLcode rc;
-
-  if(!form)
-    return CURLE_OK;
-
-  if(!data)
-    return CURLE_BAD_FUNCTION_ARGUMENT;
-
-  do {
-    next=form->next;  /* the following form line */
-    if(form->type == FORM_DATA) {
-      rc = Curl_convert_to_network(data, form->line, form->length);
-      /* Curl_convert_to_network calls failf if unsuccessful */
-      if(rc != CURLE_OK)
-        return rc;
-    }
-  } while((form = next) != NULL); /* continue */
-  return CURLE_OK;
-}
-#endif /* CURL_DOES_CONVERSIONS */
-
 /*
  * curl_formget()
  * Serialize a curl_httppost struct.
diff --git a/lib/ftp.c b/lib/ftp.c
index 154a03607..d08ae3fff 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -61,8 +61,6 @@
 #include <curl/curl.h>
 #include "urldata.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
-
 #include "if2ip.h"
 #include "hostip.h"
 #include "progress.h"
@@ -94,6 +92,7 @@
 #include "speedcheck.h"
 #include "warnless.h"
 #include "http_proxy.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -3772,13 +3771,10 @@ CURLcode Curl_ftpsendf(struct connectdata *conn,
   bytes_written=0;
   write_len = strlen(s);
 
-#ifdef CURL_DOES_CONVERSIONS
   res = Curl_convert_to_network(conn->data, s, write_len);
   /* Curl_convert_to_network calls failf if unsuccessful */
-  if(res != CURLE_OK) {
+  if(res)
     return(res);
-  }
-#endif /* CURL_DOES_CONVERSIONS */
 
   for(;;) {
 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
diff --git a/lib/http.c b/lib/http.c
index 4f2b46a59..960bb4279 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -76,7 +76,6 @@
 #include <curl/curl.h>
 #include "transfer.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
 #include "formdata.h"
 #include "progress.h"
 #include "curl_base64.h"
@@ -100,6 +99,7 @@
 #include "rtsp.h"
 #include "http_proxy.h"
 #include "warnless.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -1014,17 +1014,15 @@ CURLcode Curl_add_buffer_send(Curl_send_buffer *in,
 
   DEBUGASSERT(size > included_body_bytes);
 
-#ifdef CURL_DOES_CONVERSIONS
   res = Curl_convert_to_network(conn->data, ptr, headersize);
   /* Curl_convert_to_network calls failf if unsuccessful */
-  if(res != CURLE_OK) {
+  if(res) {
     /* conversion failed, free memory and return to the caller */
     if(in->buffer)
       free(in->buffer);
     free(in);
     return res;
   }
-#endif /* CURL_DOES_CONVERSIONS */
 
   if(conn->handler->protocol & CURLPROTO_HTTPS) {
     /* We never send more than CURL_MAX_WRITE_SIZE bytes in one single chunk
@@ -2292,14 +2290,14 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       Curl_formclean(&http->sendit); /* free that whole lot */
       return result;
     }
-#ifdef CURL_DOES_CONVERSIONS
-/* time to convert the form data... */
-    result = Curl_formconvert(data, http->sendit);
+
+    /* convert the form data */
+    result = Curl_convert_form(data, http->sendit);
     if(result) {
       Curl_formclean(&http->sendit); /* free that whole lot */
       return result;
     }
-#endif /* CURL_DOES_CONVERSIONS */
+
     break;
 
   case HTTPREQ_PUT: /* Let's PUT the data to the server! */
@@ -2538,13 +2536,13 @@ checkhttpprefix(struct SessionHandle *data,
   /* convert from the network encoding using a scratch area */
   char *scratch = strdup(s);
   if(NULL == scratch) {
-     failf (data, "Failed to allocate memory for conversion!");
-     return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
+    failf (data, "Failed to allocate memory for conversion!");
+    return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
   }
   if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
     /* Curl_convert_from_network calls failf if unsuccessful */
-     free(scratch);
-     return FALSE; /* can't return CURLE_foobar so return FALSE */
+    free(scratch);
+    return FALSE; /* can't return CURLE_foobar so return FALSE */
   }
   s = scratch;
 #endif /* CURL_DOES_CONVERSIONS */
@@ -2557,9 +2555,8 @@ checkhttpprefix(struct SessionHandle *data,
     head = head->next;
   }
 
-  if((rc != TRUE) && (checkprefix("HTTP/", s))) {
+  if((rc != TRUE) && (checkprefix("HTTP/", s)))
     rc = TRUE;
-  }
 
 #ifdef CURL_DOES_CONVERSIONS
   free(scratch);
@@ -2931,10 +2928,9 @@ CURLcode Curl_http_readwrite_headers(struct SessionHandle *data,
       res = Curl_convert_from_network(data,
                                       &scratch[0],
                                       SCRATCHSIZE);
-      if(CURLE_OK != res) {
+      if(res)
         /* Curl_convert_from_network calls failf if unsuccessful */
         return res;
-      }
 #else
 #define HEADER1 k->p /* no conversion needed, just use k->p */
 #endif /* CURL_DOES_CONVERSIONS */
@@ -3065,14 +3061,10 @@ CURLcode Curl_http_readwrite_headers(struct SessionHandle *data,
       }
     }
 
-#ifdef CURL_DOES_CONVERSIONS
-    /* convert from the network encoding */
     result = Curl_convert_from_network(data, k->p, strlen(k->p));
-    if(CURLE_OK != result) {
-      return(result);
-    }
     /* Curl_convert_from_network calls failf if unsuccessful */
-#endif /* CURL_DOES_CONVERSIONS */
+    if(result)
+      return result;
 
     /* Check for Content-Length: header lines to get size */
     if(!k->ignorecl && !data->set.ignorecl &&
diff --git a/lib/http_chunks.c b/lib/http_chunks.c
index e955b945e..821a861f4 100644
--- a/lib/http_chunks.c
+++ b/lib/http_chunks.c
@@ -35,7 +35,7 @@
 #include "content_encoding.h"
 #include "http.h"
 #include "curl_memory.h"
-#include "easyif.h" /* for Curl_convert_to_network prototype */
+#include "non-ascii.h" /* for Curl_convert_to_network prototype */
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -153,17 +153,16 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
         }
         /* length and datap are unmodified */
         ch->hexbuffer[ch->hexindex]=0;
-#ifdef CURL_DOES_CONVERSIONS
+
         /* convert to host encoding before calling strtoul */
-        result = Curl_convert_from_network(conn->data,
-                                           ch->hexbuffer,
+        result = Curl_convert_from_network(conn->data, ch->hexbuffer,
                                            ch->hexindex);
-        if(result != CURLE_OK) {
+        if(result) {
           /* Curl_convert_from_network calls failf if unsuccessful */
           /* Treat it as a bad hex character */
           return(CHUNKE_ILLEGAL_HEX);
         }
-#endif /* CURL_DOES_CONVERSIONS */
+
         ch->datasize=strtoul(ch->hexbuffer, NULL, 16);
         ch->state = CHUNK_POSTHEX;
       }
@@ -297,17 +296,14 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
           conn->trailer[conn->trlPos++]=0x0a;
           conn->trailer[conn->trlPos]=0;
 
-#ifdef CURL_DOES_CONVERSIONS
           /* Convert to host encoding before calling Curl_client_write */
-          result = Curl_convert_from_network(conn->data,
-                                             conn->trailer,
+          result = Curl_convert_from_network(conn->data, conn->trailer,
                                              conn->trlPos);
-          if(result != CURLE_OK)
+          if(result)
             /* Curl_convert_from_network calls failf if unsuccessful */
             /* Treat it as a bad chunk */
             return CHUNKE_BAD_CHUNK;
 
-#endif /* CURL_DOES_CONVERSIONS */
           if(!data->set.http_te_skip) {
             result = Curl_client_write(conn, CLIENTWRITE_HEADER,
                                        conn->trailer, conn->trlPos);
diff --git a/lib/http_digest.c b/lib/http_digest.c
index 45d8aeba8..4993a987d 100644
--- a/lib/http_digest.c
+++ b/lib/http_digest.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -38,7 +38,7 @@
 #include "strtok.h"
 #include "url.h" /* for Curl_safefree() */
 #include "curl_memory.h"
-#include "easyif.h" /* included for Curl_convert_... prototypes */
+#include "non-ascii.h" /* included for Curl_convert_... prototypes */
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -294,7 +294,6 @@ CURLcode Curl_output_digest(struct connectdata *conn,
 
   struct SessionHandle *data = conn->data;
   struct digestdata *d;
-#ifdef CURL_DOES_CONVERSIONS
   CURLcode rc;
 /* The CURL_OUTPUT_DIGEST_CONV macro below is for non-ASCII machines.
    It converts digest text to ASCII so the MD5 will be correct for
@@ -306,9 +305,6 @@ CURLcode Curl_output_digest(struct connectdata *conn,
     free(b); \
     return rc; \
   }
-#else
-#define CURL_OUTPUT_DIGEST_CONV(a, b)
-#endif /* CURL_DOES_CONVERSIONS */
 
   if(proxy) {
     d = &data->state.proxydigest;
diff --git a/lib/http_ntlm.c b/lib/http_ntlm.c
index f5b696a69..d1f2edd45 100644
--- a/lib/http_ntlm.c
+++ b/lib/http_ntlm.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -52,7 +52,7 @@
 #endif
 
 #include "urldata.h"
-#include "easyif.h"  /* for Curl_convert_... prototypes */
+#include "non-ascii.h"  /* for Curl_convert_... prototypes */
 #include "sendf.h"
 #include "rawstr.h"
 #include "curl_base64.h"
@@ -525,16 +525,12 @@ static void mk_lm_hash(struct SessionHandle *data,
   Curl_strntoupper((char *)pw, password, len);
   memset(&pw[len], 0, 14-len);
 
-#ifdef CURL_DOES_CONVERSIONS
   /*
    * The LanManager hashed password needs to be created using the
    * password in the network encoding not the host encoding.
    */
-  if(data)
-    Curl_convert_to_network(data, (char *)pw, 14);
-#else
-  (void)data;
-#endif
+  if(Curl_convert_to_network(data, (char *)pw, 14))
+    return;
 
   {
     /* Create LanManager hashed password. */
@@ -590,21 +586,19 @@ static CURLcode mk_nt_hash(struct SessionHandle *data,
 {
   size_t len = strlen(password);
   unsigned char *pw = malloc(len*2);
+  CURLcode result;
   if(!pw)
     return CURLE_OUT_OF_MEMORY;
 
   ascii_to_unicode_le(pw, password, len);
 
-#ifdef CURL_DOES_CONVERSIONS
   /*
-   * The NT hashed password needs to be created using the
-   * password in the network encoding not the host encoding.
+   * The NT hashed password needs to be created using the password in the
+   * network encoding not the host encoding.
    */
-  if(data)
-    Curl_convert_to_network(data, (char *)pw, len*2);
-#else
-  (void)data;
-#endif
+  result = Curl_convert_to_network(data, (char *)pw, len*2);
+  if(result)
+    return result;
 
   {
     /* Create NT hashed password. */
@@ -1244,14 +1238,10 @@ CURLcode Curl_output_ntlm(struct connectdata *conn,
     memcpy(&ntlmbuf[size], host, hostlen);
     size += hostlen;
 
-#ifdef CURL_DOES_CONVERSIONS
     /* convert domain, user, and host to ASCII but leave the rest as-is */
-    if(CURLE_OK != Curl_convert_to_network(conn->data,
-                                           (char *)&ntlmbuf[domoff],
-                                           size-domoff)) {
+    if(Curl_convert_to_network(conn->data, (char *)&ntlmbuf[domoff],
+                               size-domoff))
       return CURLE_CONV_FAILED;
-    }
-#endif /* CURL_DOES_CONVERSIONS */
 
 #endif
 
diff --git a/lib/http_proxy.c b/lib/http_proxy.c
index 7631ae53c..99f3f0a70 100644
--- a/lib/http_proxy.c
+++ b/lib/http_proxy.c
@@ -33,6 +33,7 @@
 #include "select.h"
 #include "rawstr.h"
 #include "progress.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -315,14 +316,12 @@ CURLcode Curl_proxyCONNECT(struct connectdata *conn,
                   char letter;
                   int writetype;
 
-#ifdef CURL_DOES_CONVERSIONS
                   /* convert from the network encoding */
                   result = Curl_convert_from_network(data, line_start,
                                                      perline);
                   /* Curl_convert_from_network calls failf if unsuccessful */
                   if(result)
                     return result;
-#endif /* CURL_DOES_CONVERSIONS */
 
                   /* output debug if that is requested */
                   if(data->set.verbose)
diff --git a/lib/imap.c b/lib/imap.c
index 8f6efc427..b6f807a4b 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -64,8 +64,6 @@
 #include <curl/curl.h>
 #include "urldata.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
-
 #include "if2ip.h"
 #include "hostip.h"
 #include "progress.h"
diff --git a/lib/non-ascii.c b/lib/non-ascii.c
new file mode 100644
index 000000000..945178e53
--- /dev/null
+++ b/lib/non-ascii.c
@@ -0,0 +1,332 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "setup.h"
+
+#ifdef CURL_DOES_CONVERSIONS
+
+#ifdef HAVE_ICONV
+#include <iconv.h>
+/* set default codesets for iconv */
+#ifndef CURL_ICONV_CODESET_OF_NETWORK
+#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
+#endif
+#ifndef CURL_ICONV_CODESET_FOR_UTF8
+#define CURL_ICONV_CODESET_FOR_UTF8   "UTF-8"
+#endif
+#define ICONV_ERROR  (size_t)-1
+#endif /* HAVE_ICONV */
+
+/*
+ * Curl_convertclone() returns a malloced copy of the source string (if
+ * returning CURLE_OK), with the data converted to network format.
+ */
+CURLcode Curl_convertclone(struct SessionHandle *data,
+                           const char *indata,
+                           size_t insize,
+                           char **outbuf)
+{
+  char *convbuf;
+  CURLcode result;
+
+  convbuf = malloc(insize);
+  if(!convbuf)
+    return CURLE_OUT_OF_MEMORY;
+
+  memcpy(convbuf, indata, insize);
+  result = Curl_convert_to_network(data, convbuf, insize);
+  if(result) {s
+    free(convbuf);
+    return result;
+  }
+
+  *outbuf = convbuf; /* return the converted buffer */
+
+  return CURLE_OK;
+}
+
+/*
+ * Curl_convert_to_network() is an internal function for performing ASCII
+ * conversions on non-ASCII platforms. It convers the buffer _in place_.
+ */
+CURLcode Curl_convert_to_network(struct SessionHandle *data,
+                                 char *buffer, size_t length)
+{
+  CURLcode rc;
+
+  if(data->set.convtonetwork) {
+    /* use translation callback */
+    rc = data->set.convtonetwork(buffer, length);
+    if(rc != CURLE_OK) {
+      failf(data,
+            "CURLOPT_CONV_TO_NETWORK_FUNCTION callback returned %d: %s",
+            (int)rc, curl_easy_strerror(rc));
+    }
+    return rc;
+  }
+  else {
+#ifdef HAVE_ICONV
+    /* do the translation ourselves */
+    char *input_ptr, *output_ptr;
+    size_t in_bytes, out_bytes, rc;
+    int error;
+
+    /* open an iconv conversion descriptor if necessary */
+    if(data->outbound_cd == (iconv_t)-1) {
+      data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
+                                     CURL_ICONV_CODESET_OF_HOST);
+      if(data->outbound_cd == (iconv_t)-1) {
+        error = ERRNO;
+        failf(data,
+              "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
+              CURL_ICONV_CODESET_OF_NETWORK,
+              CURL_ICONV_CODESET_OF_HOST,
+              error, strerror(error));
+        return CURLE_CONV_FAILED;
+      }
+    }
+    /* call iconv */
+    input_ptr = output_ptr = buffer;
+    in_bytes = out_bytes = length;
+    rc = iconv(data->outbound_cd, (const char**)&input_ptr, &in_bytes,
+               &output_ptr, &out_bytes);
+    if((rc == ICONV_ERROR) || (in_bytes != 0)) {
+      error = ERRNO;
+      failf(data,
+            "The Curl_convert_to_network iconv call failed with errno %i: %s",
+            error, strerror(error));
+      return CURLE_CONV_FAILED;
+    }
+#else
+    failf(data, "CURLOPT_CONV_TO_NETWORK_FUNCTION callback required");
+    return CURLE_CONV_REQD;
+#endif /* HAVE_ICONV */
+  }
+
+  return CURLE_OK;
+}
+
+/*
+ * Curl_convert_from_network() is an internal function for performing ASCII
+ * conversions on non-ASCII platforms. It convers the buffer _in place_.
+ */
+CURLcode Curl_convert_from_network(struct SessionHandle *data,
+                                   char *buffer, size_t length)
+{
+  CURLcode rc;
+
+  if(data->set.convfromnetwork) {
+    /* use translation callback */
+    rc = data->set.convfromnetwork(buffer, length);
+    if(rc != CURLE_OK) {
+      failf(data,
+            "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback returned %d: %s",
+            (int)rc, curl_easy_strerror(rc));
+    }
+    return rc;
+  }
+  else {
+#ifdef HAVE_ICONV
+    /* do the translation ourselves */
+    char *input_ptr, *output_ptr;
+    size_t in_bytes, out_bytes, rc;
+    int error;
+
+    /* open an iconv conversion descriptor if necessary */
+    if(data->inbound_cd == (iconv_t)-1) {
+      data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                                    CURL_ICONV_CODESET_OF_NETWORK);
+      if(data->inbound_cd == (iconv_t)-1) {
+        error = ERRNO;
+        failf(data,
+              "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
+              CURL_ICONV_CODESET_OF_HOST,
+              CURL_ICONV_CODESET_OF_NETWORK,
+              error, strerror(error));
+        return CURLE_CONV_FAILED;
+      }
+    }
+    /* call iconv */
+    input_ptr = output_ptr = buffer;
+    in_bytes = out_bytes = length;
+    rc = iconv(data->inbound_cd, (const char **)&input_ptr, &in_bytes,
+               &output_ptr, &out_bytes);
+    if((rc == ICONV_ERROR) || (in_bytes != 0)) {
+      error = ERRNO;
+      failf(data,
+            "The Curl_convert_from_network iconv call failed with errno %i: %s",
+            error, strerror(error));
+      return CURLE_CONV_FAILED;
+    }
+#else
+    failf(data, "CURLOPT_CONV_FROM_NETWORK_FUNCTION callback required");
+    return CURLE_CONV_REQD;
+#endif /* HAVE_ICONV */
+  }
+
+  return CURLE_OK;
+}
+
+/*
+ * Curl_convert_from_utf8() is an internal function for performing UTF-8
+ * conversions on non-ASCII platforms.
+ */
+CURLcode Curl_convert_from_utf8(struct SessionHandle *data,
+                                char *buffer, size_t length)
+{
+  CURLcode rc;
+
+  if(data->set.convfromutf8) {
+    /* use translation callback */
+    rc = data->set.convfromutf8(buffer, length);
+    if(rc != CURLE_OK) {
+      failf(data,
+            "CURLOPT_CONV_FROM_UTF8_FUNCTION callback returned %d: %s",
+            (int)rc, curl_easy_strerror(rc));
+    }
+    return rc;
+  }
+  else {
+#ifdef HAVE_ICONV
+    /* do the translation ourselves */
+    const char *input_ptr;
+    char *output_ptr;
+    size_t in_bytes, out_bytes, rc;
+    int error;
+
+    /* open an iconv conversion descriptor if necessary */
+    if(data->utf8_cd == (iconv_t)-1) {
+      data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                                 CURL_ICONV_CODESET_FOR_UTF8);
+      if(data->utf8_cd == (iconv_t)-1) {
+        error = ERRNO;
+        failf(data,
+              "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
+              CURL_ICONV_CODESET_OF_HOST,
+              CURL_ICONV_CODESET_FOR_UTF8,
+              error, strerror(error));
+        return CURLE_CONV_FAILED;
+      }
+    }
+    /* call iconv */
+    input_ptr = output_ptr = buffer;
+    in_bytes = out_bytes = length;
+    rc = iconv(data->utf8_cd, &input_ptr, &in_bytes,
+               &output_ptr, &out_bytes);
+    if((rc == ICONV_ERROR) || (in_bytes != 0)) {
+      error = ERRNO;
+      failf(data,
+            "The Curl_convert_from_utf8 iconv call failed with errno %i: %s",
+            error, strerror(error));
+      return CURLE_CONV_FAILED;
+    }
+    if(output_ptr < input_ptr) {
+      /* null terminate the now shorter output string */
+      *output_ptr = 0x00;
+    }
+#else
+    failf(data, "CURLOPT_CONV_FROM_UTF8_FUNCTION callback required");
+    return CURLE_CONV_REQD;
+#endif /* HAVE_ICONV */
+  }
+
+  return CURLE_OK;
+}
+
+/*
+ * Init conversion stuff for a SessionHandle
+ */
+void Curl_convert_init(struct SessionHandle *data)
+{
+#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
+  /* conversion descriptors for iconv calls */
+  data->outbound_cd = (iconv_t)-1;
+  data->inbound_cd  = (iconv_t)-1;
+  data->utf8_cd     = (iconv_t)-1;
+#else
+  (void)data;
+#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
+}
+
+/*
+ * Setup conversion stuff for a SessionHandle
+ */
+void Curl_convert_setup(struct SessionHandle *data)
+{
+  data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                                CURL_ICONV_CODESET_OF_NETWORK);
+  data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
+                                 CURL_ICONV_CODESET_OF_HOST);
+  data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                             CURL_ICONV_CODESET_FOR_UTF8);
+}
+
+/*
+ * Close conversion stuff for a SessionHandle
+ */
+
+void Curl_convert_close(struct SessionHandle *data)
+{
+#ifdef HAVE_ICONV
+  /* close iconv conversion descriptors */
+  if(data->inbound_cd != (iconv_t)-1) {
+     iconv_close(data->inbound_cd);
+  }
+  if(data->outbound_cd != (iconv_t)-1) {
+     iconv_close(data->outbound_cd);
+  }
+  if(data->utf8_cd != (iconv_t)-1) {
+     iconv_close(data->utf8_cd);
+  }
+#else
+  (void)data;
+#endif /* HAVE_ICONV */
+}
+
+/*
+ * Curl_convert_form() is used from http.c, this converts any form items that
+   need to be sent in the network encoding.  Returns CURLE_OK on success.
+ */
+CURLcode Curl_convert_form(struct SessionHandle *data, struct FormData *form)
+{
+  struct FormData *next;
+  CURLcode rc;
+
+  if(!form)
+    return CURLE_OK;
+
+  if(!data)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  do {
+    next=form->next;  /* the following form line */
+    if(form->type == FORM_DATA) {
+      rc = Curl_convert_to_network(data, form->line, form->length);
+      /* Curl_convert_to_network calls failf if unsuccessful */
+      if(rc != CURLE_OK)
+        return rc;
+    }
+  } while((form = next) != NULL); /* continue */
+  return CURLE_OK;
+}
+
+#endif /* CURL_DOES_CONVERSIONS */
diff --git a/lib/non-ascii.h b/lib/non-ascii.h
new file mode 100644
index 000000000..cccb11f25
--- /dev/null
+++ b/lib/non-ascii.h
@@ -0,0 +1,60 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "setup.h"
+
+#ifdef CURL_DOES_CONVERSIONS
+
+#include "urldata.h"
+
+/*
+ * Curl_convertclone() returns a malloced copy of the source string (if
+ * returning CURLE_OK), with the data converted to network format.
+ *
+ * If no conversion was needed *outbuf may be NULL.
+ */
+CURLcode Curl_convert_clone(struct SessionHandle *data,
+                            const char *indata,
+                            size_t insize,
+                            char **outbuf);
+
+void Curl_convert_init(struct SessionHandle *data);
+void Curl_convert_setup(struct SessionHandle *data);
+void Curl_convert_close(struct SessionHandle *data);
+
+CURLcode Curl_convert_to_network(struct SessionHandle *data,
+                                 char *buffer, size_t length);
+CURLcode Curl_convert_from_network(struct SessionHandle *data,
+                                 char *buffer, size_t length);
+CURLcode Curl_convert_from_utf8(struct SessionHandle *data,
+                                 char *buffer, size_t length);
+CURLcode Curl_convert_form(struct SessionHandle *data, struct FormData *form);
+#else
+#define Curl_convert_clone(a,b,c,d) \
+  ((void)a, (void)b, (void)c, *(d)=NULL, CURLE_OK)
+#define Curl_convert_init(x)
+#define Curl_convert_setup(x)
+#define Curl_convert_close(x)
+#define Curl_convert_to_network(a,b,c) ((void)a, CURLE_OK)
+#define Curl_convert_from_network(a,b,c) ((void)a, CURLE_OK)
+#define Curl_convert_from_utf8(a,b,c) ((void)a, CURLE_OK)
+#define Curl_convert_form(a,b) CURLE_OK
+#endif
diff --git a/lib/nss.c b/lib/nss.c
index d93937755..3677043f0 100644
--- a/lib/nss.c
+++ b/lib/nss.c
@@ -68,7 +68,6 @@
 
 #include "curl_memory.h"
 #include "rawstr.h"
-#include "easyif.h" /* for Curl_convert_from_utf8 prototype */
 
 /* The last #include file should be: */
 #include "memdebug.h"
diff --git a/lib/pingpong.c b/lib/pingpong.c
index 67ce63e59..a49aad960 100644
--- a/lib/pingpong.c
+++ b/lib/pingpong.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -32,6 +32,7 @@
 #include "speedcheck.h"
 #include "pingpong.h"
 #include "multiif.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
@@ -208,13 +209,10 @@ CURLcode Curl_pp_vsendf(struct pingpong *pp,
 
   Curl_pp_init(pp);
 
-#ifdef CURL_DOES_CONVERSIONS
   res = Curl_convert_to_network(data, s, write_len);
   /* Curl_convert_to_network calls failf if unsuccessful */
-  if(res != CURLE_OK) {
+  if(res)
     return res;
-  }
-#endif /* CURL_DOES_CONVERSIONS */
 
 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
   conn->data_prot = PROT_CMD;
@@ -344,13 +342,10 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
       if(res == CURLE_AGAIN)
         return CURLE_OK; /* return */
 
-#ifdef CURL_DOES_CONVERSIONS
-      if((res == CURLE_OK) && (gotbytes > 0)) {
+      if((res == CURLE_OK) && (gotbytes > 0))
         /* convert from the network encoding */
         res = Curl_convert_from_network(data, ptr, gotbytes);
-        /* Curl_convert_from_network calls failf if unsuccessful */
-      }
-#endif /* CURL_DOES_CONVERSIONS */
+      /* Curl_convert_from_network calls failf if unsuccessful */
 
       if(CURLE_OK != res) {
         result = (CURLcode)res; /* Set outer result variable to this error. */
diff --git a/lib/pop3.c b/lib/pop3.c
index 79af8fc0c..8f37c1fe6 100644
--- a/lib/pop3.c
+++ b/lib/pop3.c
@@ -65,8 +65,6 @@
 #include <curl/curl.h>
 #include "urldata.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
-
 #include "if2ip.h"
 #include "hostip.h"
 #include "progress.h"
diff --git a/lib/rtsp.c b/lib/rtsp.c
index 56998c16e..14f430c88 100644
--- a/lib/rtsp.c
+++ b/lib/rtsp.c
@@ -28,7 +28,6 @@
 #include <curl/curl.h>
 #include "transfer.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
 #include "multiif.h"
 #include "http.h"
 #include "url.h"
diff --git a/lib/sendf.c b/lib/sendf.c
index ab79a8080..06b289cbc 100644
--- a/lib/sendf.c
+++ b/lib/sendf.c
@@ -43,6 +43,7 @@
 #include "ssh.h"
 #include "multiif.h"
 #include "rtsp.h"
+#include "non-ascii.h"
 
 #define _MPRINTF_REPLACE /* use the internal *printf() functions */
 #include <curl/mprintf.h>
@@ -58,7 +59,7 @@
 #include <string.h>
 #include "curl_memory.h"
 #include "strerror.h"
-#include "easyif.h" /* for the Curl_convert_from_network prototype */
+
 /* The last #include file should be: */
 #include "memdebug.h"
 
@@ -443,14 +444,11 @@ CURLcode Curl_client_write(struct connectdata *conn,
   if(type & CLIENTWRITE_BODY) {
     if((conn->handler->protocol&CURLPROTO_FTP) &&
        conn->proto.ftpc.transfertype == 'A') {
-#ifdef CURL_DOES_CONVERSIONS
       /* convert from the network encoding */
-      size_t rc;
-      rc = Curl_convert_from_network(data, ptr, len);
+      size_t rc = Curl_convert_from_network(data, ptr, len);
       /* Curl_convert_from_network calls failf if unsuccessful */
-      if(rc != CURLE_OK)
+      if(rc)
         return rc;
-#endif /* CURL_DOES_CONVERSIONS */
 
 #ifdef CURL_DO_LINEEND_CONV
       /* convert end-of-line markers */
diff --git a/lib/smtp.c b/lib/smtp.c
index 1680a82e1..e14c25f50 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -67,8 +67,6 @@
 #include <curl/curl.h>
 #include "urldata.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
-
 #include "if2ip.h"
 #include "hostip.h"
 #include "progress.h"
diff --git a/lib/ssh.c b/lib/ssh.c
index f760d84ba..04219d8f1 100644
--- a/lib/ssh.c
+++ b/lib/ssh.c
@@ -79,8 +79,6 @@
 #include <curl/curl.h>
 #include "urldata.h"
 #include "sendf.h"
-#include "easyif.h" /* for Curl_convert_... prototypes */
-
 #include "hostip.h"
 #include "progress.h"
 #include "transfer.h"
diff --git a/lib/ssluse.c b/lib/ssluse.c
index eb022ad93..9d55eb0c3 100644
--- a/lib/ssluse.c
+++ b/lib/ssluse.c
@@ -71,7 +71,7 @@
 #endif
 
 #include "curl_memory.h"
-#include "easyif.h" /* for Curl_convert_from_utf8 prototype */
+#include "non-ascii.h" /* for Curl_convert_from_utf8 prototype */
 
 /* The last #include file should be: */
 #include "memdebug.h"
@@ -1251,18 +1251,15 @@ static CURLcode verifyhost(struct connectdata *conn,
 
     if(peer_CN == nulstr)
        peer_CN = NULL;
-#ifdef CURL_DOES_CONVERSIONS
     else {
       /* convert peer_CN from UTF8 */
-      size_t rc;
-      rc = Curl_convert_from_utf8(data, peer_CN, strlen(peer_CN));
+      size_t rc = Curl_convert_from_utf8(data, peer_CN, strlen(peer_CN));
       /* Curl_convert_from_utf8 calls failf if unsuccessful */
-      if(rc != CURLE_OK) {
+      if(rc) {
         OPENSSL_free(peer_CN);
         return rc;
       }
     }
-#endif /* CURL_DOES_CONVERSIONS */
 
     if(res)
       /* error already detected, pass through */
diff --git a/lib/transfer.c b/lib/transfer.c
index 960056c1d..08d5ed37f 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -101,7 +101,6 @@
 #include "curl_memory.h"
 #include "select.h"
 #include "multiif.h"
-#include "easyif.h" /* for Curl_convert_to_network prototype */
 #include "rtsp.h"
 #include "connect.h"
 
diff --git a/lib/url.c b/lib/url.c
index cf576ad8a..3bc8db06d 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -122,6 +122,7 @@ int curl_win32_idn_to_ascii(const char *in, char **out);
 #include "speedcheck.h"
 #include "rawstr.h"
 #include "warnless.h"
+#include "non-ascii.h"
 
 /* And now for the protocols */
 #include "ftp.h"
@@ -527,18 +528,7 @@ CURLcode Curl_close(struct SessionHandle *data)
   /* this destroys the channel and we cannot use it anymore after this */
   ares_destroy(data->state.areschannel);
 
-#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
-  /* close iconv conversion descriptors */
-  if(data->inbound_cd != (iconv_t)-1) {
-     iconv_close(data->inbound_cd);
-  }
-  if(data->outbound_cd != (iconv_t)-1) {
-     iconv_close(data->outbound_cd);
-  }
-  if(data->utf8_cd != (iconv_t)-1) {
-     iconv_close(data->utf8_cd);
-  }
-#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
+  Curl_convert_close(data);
 
   /* No longer a dirty share, if it exists */
   if(data->share) {
@@ -816,12 +806,7 @@ CURLcode Curl_open(struct SessionHandle **curl)
 
     data->state.headersize=HEADERSIZE;
 
-#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
-    /* conversion descriptors for iconv calls */
-    data->outbound_cd = (iconv_t)-1;
-    data->inbound_cd  = (iconv_t)-1;
-    data->utf8_cd     = (iconv_t)-1;
-#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
+    Curl_convert_init(data);
 
     /* most recent connection is not yet defined */
     data->state.lastconnect = -1;