Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | 1x 1x 1x 1x 1x 1x 21x 29x 29x 29x 29x 7x 22x 7x 2x 1x 2x 1x 1x 22x 14x 3x 5x 4x 4x 14x 7x 7x 4x 4x 4x 4x 12x 12x 6x 6x 6x 11x 11x 6x 6x 6x 6x 2x 2x 14x 14x 14x 10x 4x 4x 4x 4x 11x 4x 4x 3x 3x 2x 2x 5x 5x | import {Reader} from '@jsonjoy.com/buffers/lib/Reader';
import {XdrDecoder} from '../../../xdr/XdrDecoder';
import {MountProc} from './constants';
import {Nfsv3DecodingError} from '../errors';
import * as msg from './messages';
import * as structs from './structs';
export class MountDecoder {
protected readonly xdr: XdrDecoder;
constructor(reader: Reader = new Reader()) {
this.xdr = new XdrDecoder(reader);
}
public decodeMessage(reader: Reader, proc: MountProc, isRequest: boolean): msg.MountMessage | undefined {
this.xdr.reader = reader;
const startPos = reader.x;
try {
if (isRequest) {
return this.decodeRequest(proc);
} else {
return this.decodeResponse(proc);
}
} catch (err) {
Iif (err instanceof RangeError) {
reader.x = startPos;
return undefined;
}
throw err;
}
}
private decodeRequest(proc: MountProc): msg.MountRequest | undefined {
switch (proc) {
case MountProc.NULL:
return undefined;
case MountProc.MNT:
return this.decodeMntRequest();
case MountProc.DUMP:
return new msg.MountDumpRequest();
case MountProc.UMNT:
return this.decodeUmntRequest();
case MountProc.UMNTALL:
return new msg.MountUmntallRequest();
case MountProc.EXPORT:
return new msg.MountExportRequest();
default:
throw new Nfsv3DecodingError(`Unknown MOUNT procedure: ${proc}`);
}
}
private decodeResponse(proc: MountProc): msg.MountResponse | undefined {
switch (proc) {
case MountProc.NULL:
return undefined;
case MountProc.MNT:
return this.decodeMntResponse();
case MountProc.DUMP:
return this.decodeDumpResponse();
case MountProc.UMNT:
return undefined;
case MountProc.UMNTALL:
return undefined;
case MountProc.EXPORT:
return this.decodeExportResponse();
default:
throw new Nfsv3DecodingError(`Unknown MOUNT procedure: ${proc}`);
}
}
private readFhandle3(): structs.MountFhandle3 {
const data = this.xdr.readVarlenOpaque();
return new structs.MountFhandle3(new Reader(data));
}
private readDirpath(): string {
return this.xdr.readString();
}
private readMountBody(): structs.MountBody | undefined {
const valueFollows = this.xdr.readBoolean();
if (!valueFollows) return undefined;
const hostname = this.xdr.readString();
const directory = this.readDirpath();
const next = this.readMountBody();
return new structs.MountBody(hostname, directory, next);
}
private readGroupNode(): structs.MountGroupNode | undefined {
const valueFollows = this.xdr.readBoolean();
if (!valueFollows) return undefined;
const name = this.xdr.readString();
const next = this.readGroupNode();
return new structs.MountGroupNode(name, next);
}
private readExportNode(): structs.MountExportNode | undefined {
const valueFollows = this.xdr.readBoolean();
if (!valueFollows) return undefined;
const dir = this.readDirpath();
const groups = this.readGroupNode();
const next = this.readExportNode();
return new structs.MountExportNode(dir, groups, next);
}
private decodeMntRequest(): msg.MountMntRequest {
const dirpath = this.readDirpath();
return new msg.MountMntRequest(dirpath);
}
private decodeMntResponse(): msg.MountMntResponse {
const xdr = this.xdr;
const status = xdr.readUnsignedInt();
if (status !== 0) {
return new msg.MountMntResponse(status);
}
const fhandle = this.readFhandle3();
const authFlavorsCount = xdr.readUnsignedInt();
const authFlavors: number[] = [];
for (let i = 0; i < authFlavorsCount; i++) {
authFlavors.push(xdr.readUnsignedInt());
}
const mountinfo = new msg.MountMntResOk(fhandle, authFlavors);
return new msg.MountMntResponse(status, mountinfo);
}
private decodeDumpResponse(): msg.MountDumpResponse {
const mountlist = this.readMountBody();
return new msg.MountDumpResponse(mountlist);
}
private decodeUmntRequest(): msg.MountUmntRequest {
const dirpath = this.readDirpath();
return new msg.MountUmntRequest(dirpath);
}
private decodeExportResponse(): msg.MountExportResponse {
const exports = this.readExportNode();
return new msg.MountExportResponse(exports);
}
}
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