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Copy pathguideclient.c
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128 lines (107 loc) · 3.76 KB
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#ifndef __GNUC__
#pragma code_seg( "RTV_TEXT" )
#pragma data_seg( "RTV_DATA" )
#pragma bss_seg( "RTV_BSS" )
#pragma const_seg( "RTV_RD" )
#endif
/*
* Copyright (C) 2002 John Todd Larason <jtl@molehill.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "rtv.h"
#include "guideclient.h"
#include "httpclient.h"
#include <string.h>
#include <stdio.h>
#define MIN(x,y) ((x)<(y)?(x):(y))
struct snapshot_data
{
int firsttime;
int filesize;
int bytes_read;
char * timestamp;
char * buf;
u32 status;
};
static void get_snapshot_callback(unsigned char * buf, size_t len, void * vd)
{
struct snapshot_data * data = vd;
unsigned char * buf_data_start;
unsigned long bytes_to_read;
if (data->firsttime) {
unsigned char * end, * equal, * cur;
data->firsttime = 0;
/* First line: error code */
cur = buf;
end = (unsigned char*)strchr((char*)cur, '\n');
if (end) *end = '\0';
data->status = strtoul((char*)cur, NULL, 16);
if (!end) return;
do {
cur = end + 1;
if (*cur == '#') {
end = (unsigned char*)strchr((char*)cur, '\0');
len -= (end - buf);
buf_data_start = end;
break;
}
end = (unsigned char*)strchr((char*)cur, '\n');
if (!end) return;
*end = '\0';
equal = (unsigned char*)strchr((char*)cur, '=');
if (!equal) return;
if (strncmp((char*)cur, "guide_file_name=", (int)(equal-cur+1)) == 0) {
data->timestamp = malloc(strlen((const char*)(equal+1))+1);
strcpy((char*)data->timestamp, (const char*)(equal+1));
} else if (strncmp((char*)cur, "FileLength=", (int)(equal-cur+1)) == 0) {
data->filesize = strtoul((char*)equal+1, NULL, 0);
data->buf = malloc(data->filesize);
} /* also "RemoteFileName", but we don't expose it */
} while (1);
} else {
buf_data_start = buf;
}
bytes_to_read = MIN(len, (unsigned)(data->filesize - data->bytes_read));
memcpy(data->buf + data->bytes_read, buf_data_start, bytes_to_read);
data->bytes_read += bytes_to_read;
free(buf);
}
unsigned long guide_client_get_snapshot(unsigned char ** presult,
unsigned char ** ptimestamp,
unsigned long * psize,
const char * address,
const char * cur_timestamp)
{
struct snapshot_data data;
char url[512];
struct hc * hc;
memset(&data, 0, sizeof data);
data.firsttime = 1;
data.status = -1;
sprintf(url, "http://%s/http_replay_guide-get_snapshot?"
"guide_file_name=%s&serial_no=RTV4080K0000000000",
address,
cur_timestamp);
hc = hc_start_request(url);
if (!hc) {
perror("Error: guide_client_get_snapshot(): hc_start_request()");
goto exit;
}
hc_send_request(hc);
hc_read_pieces(hc, get_snapshot_callback, &data);
hc_free(hc);
*ptimestamp = (unsigned char*)data.timestamp;
*presult = (unsigned char*)data.buf;
*psize = data.filesize;
exit:
return data.status;
}