initial support for "uploading" to file:// URLs

CHANGES

@@ -7,6 +7,8 @@
                                   Changelog
 
 Daniel (24 May 2004)
+- libcurl now supports "uploading" to file:// URLs.
+
 - Simon Josefsson added a idn_free() function in libidn 0.4.5 as a reaction to
   Gisle's previous mail. We now use this function, and thus we require libidn
   0.4.5 or later. No earler version will do.

lib/file.c

@@ -83,7 +83,8 @@
 #include "file.h"
 #include "speedcheck.h"
 #include "getinfo.h"
-#include "transfer.h" /* for Curl_readwrite_init() */
+#include "transfer.h"
+#include "url.h"
 #include "memory.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
@@ -148,13 +149,16 @@ CURLcode Curl_file_connect(struct connectdata *conn)
       actual_path[i] = '\\';
 
   fd = open(actual_path, O_RDONLY | O_BINARY);	/* no CR/LF translation! */
+  file->path = actual_path;
 #else
   fd = open(real_path, O_RDONLY);
+  file->path = real_path;
 #endif
-  free(real_path);
+  file->freepath = real_path; /* free this when done */
 
-  if(fd == -1) {
+  if(!conn->data->set.upload && (fd == -1)) {
     failf(conn->data, "Couldn't open file %s", conn->path);
+    Curl_file_done(conn, CURLE_FILE_COULDNT_READ_FILE);
     return CURLE_FILE_COULDNT_READ_FILE;
   }
   file->fd = fd;
@@ -166,6 +170,83 @@ CURLcode Curl_file_connect(struct connectdata *conn)
 #define lseek(x,y,z) _lseeki64(x, y, z)
 #endif
 
+CURLcode Curl_file_done(struct connectdata *conn,
+                        CURLcode status)
+{
+  struct FILEPROTO *file = conn->proto.file;
+  (void)status; /* not used */
+  Curl_safefree(file->path);
+
+  return CURLE_OK;
+}
+
+static CURLcode file_upload(struct connectdata *conn)
+{
+  struct FILEPROTO *file = conn->proto.file;
+  char *dir = strchr(file->path, '/');
+  FILE *fp;
+  CURLcode res=CURLE_OK;
+  struct SessionHandle *data = conn->data;
+  char *buf = data->state.buffer;
+  size_t nread;
+  size_t nwrite;
+  curl_off_t bytecount = 0;
+  struct timeval now = Curl_tvnow();
+
+  /*
+   * Since FILE: doesn't do the full init, we need to provide some extra
+   * assignments here.
+   */
+  conn->fread = data->set.fread;
+  conn->fread_in = data->set.in;
+  conn->upload_fromhere = buf;
+
+  if(!dir)
+    return CURLE_FILE_COULDNT_READ_FILE; /* fix: better error code */
+
+  if(!dir[1])
+     return CURLE_FILE_COULDNT_READ_FILE; /* fix: better error code */
+
+  fp = fopen(file->path, "wb");
+  if(!fp) {
+    failf(data, "Can't open %s for writing", file->path);
+    return CURLE_WRITE_ERROR;
+  }
+
+  if(-1 != data->set.infilesize)
+    /* known size of data to "upload" */
+    Curl_pgrsSetUploadSize(data, data->set.infilesize);
+
+  while (res == CURLE_OK) {
+    nread = Curl_fillreadbuffer(conn, BUFSIZE);
+
+    if (nread <= 0)
+      break;
+
+    /* write the data to the target */
+    nwrite = fwrite(buf, 1, nread, fp);
+    if(nwrite != nread) {
+      res = CURLE_SEND_ERROR;
+      break;
+    }
+
+    bytecount += nread;
+
+    Curl_pgrsSetUploadCounter(data, bytecount);
+
+    if(Curl_pgrsUpdate(conn))
+      res = CURLE_ABORTED_BY_CALLBACK;
+    else
+      res = Curl_speedcheck(data, now);
+  }
+  if(!res && Curl_pgrsUpdate(conn))
+    res = CURLE_ABORTED_BY_CALLBACK;
+
+  fclose(fp);
+
+  return res;
+}
+
 /*
  * Curl_file() is the protocol-specific function for the do-phase, separated
  * from the connect-phase above. Other protocols merely setup the transfer in
@@ -196,6 +277,9 @@ CURLcode Curl_file(struct connectdata *conn)
   Curl_initinfo(data);
   Curl_pgrsStartNow(data);
 
+  if(data->set.upload)
+    return file_upload(conn);
+
   /* get the fd from the connection phase */
   fd = conn->proto.file->fd;
 
@@ -272,10 +356,6 @@ CURLcode Curl_file(struct connectdata *conn)
       break;
 
     bytecount += nread;
-    /* NOTE: The following call to fwrite does CR/LF translation on
-       Windows systems if the target is stdout. Use -O or -o parameters
-       to prevent CR/LF translation (this then goes to a binary mode
-       file descriptor). */
 
     res = Curl_client_write(data, CLIENTWRITE_BODY, buf, nread);
     if(res)
@@ -286,7 +366,7 @@ CURLcode Curl_file(struct connectdata *conn)
     if(Curl_pgrsUpdate(conn))
       res = CURLE_ABORTED_BY_CALLBACK;
     else
-      res = Curl_speedcheck (data, now);
+      res = Curl_speedcheck(data, now);
   }
   if(Curl_pgrsUpdate(conn))
     res = CURLE_ABORTED_BY_CALLBACK;

lib/file.h

@@ -24,7 +24,8 @@
  * $Id$
  ***************************************************************************/
 #ifndef CURL_DISABLE_FILE
-CURLcode Curl_file(struct connectdata *conn);
+CURLcode Curl_file(struct connectdata *);
-CURLcode Curl_file_connect(struct connectdata *conn);
+CURLcode Curl_file_done(struct connectdata *, CURLcode);
+CURLcode Curl_file_connect(struct connectdata *);
 #endif
 #endif

lib/transfer.c

@@ -125,8 +125,7 @@ static struct timeval notimeout={0,0};
  * This function will call the read callback to fill our buffer with data
  * to upload.
  */
-static int fillbuffer(struct connectdata *conn,
+int Curl_fillreadbuffer(struct connectdata *conn, int bytes)
-                      int bytes)
 {
   int buffersize = bytes;
   int nread;
@@ -1124,7 +1123,7 @@ CURLcode Curl_readwrite(struct connectdata *conn,
               break;
             }
 
-            nread = fillbuffer(conn, BUFSIZE);
+            nread = Curl_fillreadbuffer(conn, BUFSIZE);
           }
           else
             nread = 0; /* we're done uploading/reading */

lib/transfer.h

@@ -34,6 +34,8 @@ void Curl_single_fdset(struct connectdata *conn,
                        int *max_fd);
 CURLcode Curl_readwrite_init(struct connectdata *conn);
 
+int Curl_fillreadbuffer(struct connectdata *conn, int bytes);
+
 /* This sets up a forthcoming transfer */
 CURLcode
 Curl_Transfer (struct connectdata *data,

lib/url.c

@@ -2711,7 +2711,7 @@ static CURLcode CreateConnection(struct SessionHandle *data,
     conn->protocol |= PROT_FILE;
 
     conn->curl_do = Curl_file;
-    /* no done() function */
+    conn->curl_done = Curl_file_done;
 
     /* anyway, this is supposed to be the connect function so we better
        at least check that the file is present here! */

lib/urldata.h

@@ -272,6 +272,9 @@ struct FTP {
  * FILE unique setup
  ***************************************************************************/
 struct FILEPROTO {
+  char *path; /* the path we operate on */
+  char *freepath; /* pointer to the allocated block we must free, this might
+                     differ from the 'path' pointer */
   int fd;     /* open file descriptor to read from! */
 };
 

tests/data/Makefile.am

@@ -24,7 +24,7 @@ EXTRA_DIST = test1 test108 test117 test127 test20 test27 test34 test46	\
  test150 test151 test152 test153 test154 test155 test156 test157	\
  test158 test159 test511 test160 test161 test162 test163 test164	\
  test512 test165 test166 test167 test168 test169 test170 test171	\
- test172
+ test172 test204 test205
 
 # The following tests have been removed from the dist since they no longer
 # work. We need to fix the test suite's FTPS server first, then bring them

tests/data/test204

@@ -0,0 +1,32 @@
+# no Server-side
+
+# Client-side
+<client>
+<server>
+none
+</server>
+ <name>
+"upload" with file://
+ </name>
+ <command>
+file://localhost/%PWD/log/result204.txt -T log/upload204.txt
+</command>
+<file name="log/upload204.txt">
+data
+in
+file
+to
+write
+</file>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<file name="log/result204.txt">
+data
+in
+file
+to
+write
+</file>
+</verify>

tests/data/test205

@@ -0,0 +1,29 @@
+# no Server-side
+
+# Client-side
+<client>
+<server>
+none
+</server>
+ <name>
+"upload" with file://
+ </name>
+ <command>
+file://localhost/%PWD/log/nonexisting/result205.txt -T log/upload205.txt
+</command>
+<file name="log/upload205.txt">
+data
+in
+file
+to
+write
+</file>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+# 23 => CURLE_WRITE_ERROR
+<errorcode>
+23
+</errorcode>
+</verify>