DiskBrowser/browserutil.c
2019-04-19 00:58:39 -05:00

80 lines
2.0 KiB
C

/*********************************************************************
* Utilities for disk mounting & searching
*********************************************************************/
#ifdef __ORCAC__
#pragma noroot
#endif
#include <quickdraw.h>
#include <window.h>
#include <stdio.h>
#include "session.h"
#include "seturl.h"
#include "http.h"
#include "readtcp.h"
#include "tcpconnection.h"
#include "json.h"
#include "netdiskerror.h"
void ShowErrorAlert(enum NetDiskError error, int alertNumber) {
char *subs[1];
subs[0] = ErrorString(error);
InitCursor();
AlertWindow(awResource+awCString+awButtonLayout,
(Pointer)subs, alertNumber);
}
enum NetDiskError ReadJSONFromURL(char *url, json_value** jsonResult) {
static Session sess = {0};
enum NetDiskError result = OPERATION_SUCCESSFUL;
char *netBuf = NULL; /* Buffer for data received from network */
*jsonResult = NULL;
result = SetURL(&sess, url, FALSE, FALSE);
if (result != OPERATION_SUCCESSFUL)
goto errorReturn;
result = DoHTTPRequest(&sess);
if (result != OPERATION_SUCCESSFUL)
goto errorReturn;
/* Limit content to <64k, to avoid any problems with 16-bit computations */
if (sess.contentLength == 0 || sess.contentLength > 0xffff)
sess.contentLength = 0xffff;
netBuf = malloc(sess.contentLength + 1);
if (netBuf == NULL) {
result = OUT_OF_MEMORY;
goto errorReturn;
}
InitReadTCP(&sess, sess.contentLength, netBuf);
while (TryReadTCP(&sess) == rsWaiting)
/* keep reading */ ;
sess.contentLength -= sess.readCount;
*(netBuf + sess.contentLength) = 0;
if (sess.contentLength == 0) {
result = NO_RESPONSE;
goto errorReturn;
}
*jsonResult = json_parse(netBuf, sess.contentLength);
if (*jsonResult == NULL) {
result = JSON_PARSING_ERROR;
goto errorReturn;
}
errorReturn:
free(netBuf);
EndTCPConnection(&sess);
return result;
}