DiskBrowser/seturl.c
Stephen Heumann c237bd661f Add utility code for HTTP connections, URLs, and networking.
This is adapted from NetDisk with minor changes.
2019-04-12 23:23:39 -05:00

100 lines
2.4 KiB
C

#pragma noroot
#include <types.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "session.h"
#include "urlparser.h"
#include "strcasecmp.h"
#include "hostname.h"
#include "http.h"
#include "tcpconnection.h"
#include "seturl.h"
#define DEFAULT_HTTP_PORT 80
/* Limit to make sure sizes stay within the range of 16-bit values */
#define MAX_URL_LENGTH 30000
enum NetDiskError
SetURL(Session *sess, char *url, Boolean permissive, Boolean partialOK) {
if (strlen(url) > MAX_URL_LENGTH) {
return URL_TOO_LONG;
}
for(unsigned int i = 0; url[i] != '\0'; i++) {
if ((unsigned char)url[i] < ' ') {
return INVALID_CHARACTER_IN_URL;
}
}
URLParts urlParts = ParseURL(url);
if (urlParts.errorFound)
return BAD_URL_SYNTAX;
if (urlParts.scheme == NULL) {
if (permissive) {
urlParts.scheme = "http";
} else {
return BAD_URL_SYNTAX;
}
} else if (strcasecmp(urlParts.scheme, "http") != 0) {
return UNSUPPORTED_URL_SCHEME;
}
if (urlParts.username != NULL || urlParts.password != NULL) {
return AUTHENTICATION_NOT_SUPPORTED;
}
if (urlParts.fragment != NULL) {
return FRAGMENT_NOT_SUPPORTED;
}
unsigned long portNum;
char *endPtr;
if (urlParts.port == NULL || *urlParts.port == '\0') {
portNum = DEFAULT_HTTP_PORT;
} else {
errno = 0;
portNum = strtoul(urlParts.port, &endPtr, 10);
if (errno || *endPtr != '\0' || portNum > 0xFFFF) {
return INVALID_PORT_NUMBER;
}
}
sess->port = portNum;
if (urlParts.host == NULL) {
if (!partialOK || sess->hostName[0] == 0) {
return NO_HOST_SPECIFIED;
}
} else if (*urlParts.host == '\0') {
return NO_HOST_SPECIFIED;
} else if (*urlParts.host == '[') {
return IPV6_NOT_SUPPORTED;
} else {
size_t len;
if ((len = strlen(urlParts.host)) > 255) {
return HOSTNAME_TOO_LONG;
}
strcpy(&sess->hostName[1], urlParts.host);
sess->hostName[0] = len;
if (!DoLookupName(sess)) {
return NAME_LOOKUP_FAILED;
}
}
if (!BuildHTTPRequest(sess, urlParts.path)) {
return OUT_OF_MEMORY;
}
/* End any existing TCP connection to old URL */
EndTCPConnection(sess);
return OPERATION_SUCCESSFUL;
}