/** @memo Write a buffer to a file.
@doc Write n items of size len from the buffer to the current
position in the file.
@precondition Should not mix rtp_stdio_fwrite() and
rtp_stdio_fgets() calls.
@return Number of items written, -1 on error, and -2 on non-fatal
error.
*/
long rtp_stdio_fwrite (
void * buffer, /** Buffer to write. */
unsigned long len, /** Size of items to write. */
unsigned long n, /** Number of items to write. */
void * rtpfile /** Handle of the file to be written to. */
)
{
int result = (-1);
if( !rtpfile || (((RTP_STDIO_FILE *)rtpfile)->verify != RTP_FILE_VERIFICATION_VALUE) )
{
/* --------------------------------------- */
/* Application passed an RTP_HANDLE */
/* instead of an RTP_STDIO_FILE. Should */
/* use low level rtp_file_write(). */
/* --------------------------------------- */
return ((long) -1);
}
if (((RTP_STDIO_FILE *)rtpfile)->handle)
{
result = rtp_file_write (((RTP_STDIO_FILE *)rtpfile)->handle, (unsigned char *) buffer, (unsigned int) (len * n));
if (result > 0)
{
result /= len;
}
}
return ((long) result);
}
void rtp_log_write(char *prompt, void *pData, long nBytes)
{
if (debugfd_valid)
{
unsigned long elapsed;
char outbuff[256];
elapsed = rtp_get_system_msec () - start_system_msec;
rtp_sprintf(outbuff,"\r\n ==<%s (t=%8d) (c=%4d) >== \r\n", (const unsigned char*) prompt,elapsed, nBytes);
rtp_file_write (debugfd, (const unsigned char*) outbuff, (long) rtp_strlen(outbuff));
if (pData && nBytes > 0)
{
rtp_file_write (debugfd, (const unsigned char*) pData, (long) nBytes);
rtp_sprintf(outbuff,"\r\n ==<===========================================>==\r\n");
rtp_file_write (debugfd, (const unsigned char*) outbuff, (long) rtp_strlen(outbuff));
}
rtp_file_flush (debugfd);
}
}
long rtplatform_write(int fd, unsigned char RTSMB_FAR * buf, long count)
{
long rv;
rv = rtp_file_write ((RTP_HANDLE) fd, buf, count);
if (rv < 0)
{
return -1;
}
return rv;
}
static int http_client_get(HTTPManagedClient* phttpClient, int savetofile)
{
HTTPManagedClientSession* session = 0;
char urlpath[255];
char urlfile[255];
char localfile[255];
RTP_HANDLE fd;
HTTP_INT32 result = -1;
HTTP_INT32 totalresult = 0;
HTTPResponseInfo info;
rtp_gui_prompt_text(" ","IP Address (eg: 192.161.2.1) or domain name of host (eg: www.google.com)\n :", &urlpath[0]);
rtp_gui_prompt_text(" ","File name: (eg: /index.html or / or /mydownloads/mypdf.pdf\n :", &urlfile[0]);
if (savetofile)
{
rtp_gui_prompt_text(" ","Local file name: \n :", &localfile[0]);
if (rtp_file_open (&fd, (const char *) &localfile[0], (RTP_FILE_O_CREAT|RTP_FILE_O_RDWR|RTP_FILE_O_TRUNC), RTP_FILE_S_IWRITE) < 0)
{
rtp_printf("Failure opening %s\n", localfile);
return(-1);
}
}
/* A HTTPManagedClientSession is the abstraction for a SINGLE HTTP request/response pair.
Thus a new session must be opened for each HTTP operation
(although this may not cause a new connection to be established, if keep alive is used),
and closed when the operation has completed (though, again, this may not actually close a
physical network connection) */
if (HTTP_ManagedClientStartTransaction (
phttpClient,
&urlpath[0],
80,
4,
HTTP_SESSION_TYPE_TCP,
1, /* blocking? */ &session ) < 0)
{
rtp_printf("Failed: retrieving data from from %s/%s\n", urlpath, urlfile);
return(-1);
}
/* Once the session is open, one command may be issued; in this case a GET
(by calling HTTP_ManagedClientGet) */
HTTP_ManagedClientGet(session, urlfile, 0 /* if-modified-since */);
/* This may be called at any time after the command is issued to get information
about the server response; this info includes the status code given, date when
the request was processed, file mime type information (if a file is transferred
as the result of a command), authentication information, etc. */
HTTP_ManagedClientReadResponseInfo(session, &info);
do {
/* Read data from the session */
result = HTTP_ManagedClientRead(session, read_buffer, read_buffer_size);
if (result > 0)
{
totalresult += result;
if (savetofile)
{
if (rtp_file_write(fd,read_buffer, (long)read_buffer_size) < 0)
{
rtp_printf("Failed writing to file\n");
return(-1);
}
}
}
} while (result > 0);
/* Now we are done; close the session (see note above about sessions) */
HTTP_ManagedClientCloseSession(session);
/* When all HTTP client activity is completed, the managed client context may safely be destroyed */
HTTP_ManagedClientDestroy(phttpClient);
if (savetofile)
{
rtp_file_close(fd);
}
if (result == 0)
{
rtp_printf("Success: (%d) bytes retrieved from %s/%s\n", totalresult, urlpath, urlfile);
return(0);
}
else
{
rtp_printf("Failure: (%d) bytes retrieved from %s/%s\n", totalresult, urlpath, urlfile);
return(-1);
}
}
