zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libcurl/curl-7.54.1/src/tool_cb_see.c b/ap/lib/libcurl/curl-7.54.1/src/tool_cb_see.c
new file mode 100644
index 0000000..621d440
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.54.1/src/tool_cb_see.c
@@ -0,0 +1,131 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2012, 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 https://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 "tool_setup.h"
+
+#define ENABLE_CURLX_PRINTF
+/* use our own printf() functions */
+#include "curlx.h"
+
+#include "tool_cfgable.h"
+#include "tool_cb_see.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+/* OUR_MAX_SEEK_L has 'long' data type, OUR_MAX_SEEK_O has 'curl_off_t,
+ both represent the same value. Maximum offset used here when we lseek
+ using a 'long' data type offset */
+
+#define OUR_MAX_SEEK_L 2147483647L - 1L
+#define OUR_MAX_SEEK_O CURL_OFF_T_C(0x7FFFFFFF) - CURL_OFF_T_C(0x1)
+
+/*
+** callback for CURLOPT_SEEKFUNCTION
+**
+** Notice that this is not supposed to return the resulting offset. This
+** shall only return CURL_SEEKFUNC_* return codes.
+*/
+
+int tool_seek_cb(void *userdata, curl_off_t offset, int whence)
+{
+ struct InStruct *in = userdata;
+
+#if(CURL_SIZEOF_CURL_OFF_T > SIZEOF_OFF_T) && !defined(USE_WIN32_LARGE_FILES)
+
+ /* The offset check following here is only interesting if curl_off_t is
+ larger than off_t and we are not using the WIN32 large file support
+ macros that provide the support to do 64bit seeks correctly */
+
+ if(offset > OUR_MAX_SEEK_O) {
+ /* Some precaution code to work around problems with different data sizes
+ to allow seeking >32bit even if off_t is 32bit. Should be very rare and
+ is really valid on weirdo-systems. */
+ curl_off_t left = offset;
+
+ if(whence != SEEK_SET)
+ /* this code path doesn't support other types */
+ return CURL_SEEKFUNC_FAIL;
+
+ if(LSEEK_ERROR == lseek(in->fd, 0, SEEK_SET))
+ /* couldn't rewind to beginning */
+ return CURL_SEEKFUNC_FAIL;
+
+ while(left) {
+ long step = (left > OUR_MAX_SEEK_O) ? OUR_MAX_SEEK_L : (long)left;
+ if(LSEEK_ERROR == lseek(in->fd, step, SEEK_CUR))
+ /* couldn't seek forwards the desired amount */
+ return CURL_SEEKFUNC_FAIL;
+ left -= step;
+ }
+ return CURL_SEEKFUNC_OK;
+ }
+#endif
+
+ if(LSEEK_ERROR == lseek(in->fd, offset, whence))
+ /* couldn't rewind, the reason is in errno but errno is just not portable
+ enough and we don't actually care that much why we failed. We'll let
+ libcurl know that it may try other means if it wants to. */
+ return CURL_SEEKFUNC_CANTSEEK;
+
+ return CURL_SEEKFUNC_OK;
+}
+
+#if defined(WIN32) && !defined(__MINGW64__)
+
+#ifdef __BORLANDC__
+/* 64-bit lseek-like function unavailable */
+# define _lseeki64(hnd,ofs,whence) lseek(hnd,ofs,whence)
+#endif
+
+#ifdef __POCC__
+# if(__POCC__ < 450)
+/* 64-bit lseek-like function unavailable */
+# define _lseeki64(hnd,ofs,whence) _lseek(hnd,ofs,whence)
+# else
+# define _lseeki64(hnd,ofs,whence) _lseek64(hnd,ofs,whence)
+# endif
+#endif
+
+#ifdef _WIN32_WCE
+/* 64-bit lseek-like function unavailable */
+# undef _lseeki64
+# define _lseeki64(hnd,ofs,whence) lseek(hnd,ofs,whence)
+# undef _get_osfhandle
+# define _get_osfhandle(fd) (fd)
+#endif
+
+/*
+ * Truncate a file handle at a 64-bit position 'where'.
+ */
+
+int tool_ftruncate64(int fd, curl_off_t where)
+{
+ if(_lseeki64(fd, where, SEEK_SET) < 0)
+ return -1;
+
+ if(!SetEndOfFile((HANDLE)_get_osfhandle(fd)))
+ return -1;
+
+ return 0;
+}
+
+#endif /* WIN32 && ! __MINGW64__ */
+