aboutsummaryrefslogtreecommitdiff
path: root/src/webpack/webpack.ts
blob: f1fea46a040b0d687234070f825c897f4aab7d69 (plain)
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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
import type { WebpackInstance } from "discord-types/other";

export let _resolveReady: () => void;
/**
 * Fired once a gateway connection to Discord has been established.
 * This indicates that the core webpack modules have been initialised
 */
export const onceReady = new Promise<void>(r => _resolveReady = r);

export let wreq: WebpackInstance;
export let cache: WebpackInstance["c"];

export type FilterFn = (mod: any) => boolean;

export const filters = {
    byProps: (props: string[]): FilterFn =>
        props.length === 1
            ? m => m[props[0]] !== void 0
            : m => props.every(p => m[p] !== void 0),
    byDisplayName: (deezNuts: string): FilterFn => m => m.default?.displayName === deezNuts,
    byCode: (...code: string[]): FilterFn => m => {
        if (typeof m !== "function") return false;
        const s = Function.prototype.toString.call(m);
        for (const c of code) {
            if (!s.includes(c)) return false;
        }
        return true;
    },
};

export const subscriptions = new Map<FilterFn, CallbackFn>();
export const listeners = new Set<CallbackFn>();

export type CallbackFn = (mod: any) => void;

export function _initWebpack(instance: typeof window.webpackChunkdiscord_app) {
    if (cache !== void 0) throw "no.";

    wreq = instance.push([[Symbol()], {}, r => r]);
    cache = wreq.c;
    instance.pop();
}

export function find(filter: FilterFn, getDefault = true) {
    if (typeof filter !== "function")
        throw new Error("Invalid filter. Expected a function got " + typeof filter);

    for (const key in cache) {
        const mod = cache[key];
        if (!mod?.exports) continue;

        if (filter(mod.exports))
            return mod.exports;

        if (typeof mod.exports !== "object") continue;

        if (mod.exports.default && filter(mod.exports.default))
            return getDefault ? mod.exports.default : mod.exports;

        // is 3 is the longest obfuscated export?
        // the length check makes search about 20% faster
        for (const nestedMod in mod.exports) if (nestedMod.length < 3) {
            const nested = mod.exports[nestedMod];
            if (nested && filter(nested)) return nested;
        }
    }

    return null;
}

// TODO fix
export function findAll(filter: FilterFn, getDefault = true) {
    if (typeof filter !== "function") throw new Error("Invalid filter. Expected a function got " + typeof filter);

    const ret = [] as any[];
    for (const key in cache) {
        const mod = cache[key];
        if (!mod?.exports) continue;

        if (filter(mod.exports))
            ret.push(mod.exports);
        else if (typeof mod.exports !== "object")
            continue;

        if (mod.exports.default && filter(mod.exports.default))
            ret.push(getDefault ? mod.exports.default : mod.exports);
        else for (const nestedMod in mod.exports) if (nestedMod.length < 3) {
            const nested = mod.exports[nestedMod];
            if (nested && filter(nested)) ret.push(nested);
        }
    }

    return ret;
}

export function findByProps(...props: string[]) {
    return find(filters.byProps(props));
}

export function findAllByProps(...props: string[]) {
    return findAll(filters.byProps(props));
}

export function findByDisplayName(deezNuts: string) {
    return find(filters.byDisplayName(deezNuts));
}

export function waitFor(filter: string | string[] | FilterFn, callback: CallbackFn) {
    if (typeof filter === "string") filter = filters.byProps([filter]);
    else if (Array.isArray(filter)) filter = filters.byProps(filter);
    else if (typeof filter !== "function") throw new Error("filter must be a string, string[] or function, got " + typeof filter);

    const existing = find(filter!);
    if (existing) return void callback(existing);

    subscriptions.set(filter, callback);
}

export function addListener(callback: CallbackFn) {
    listeners.add(callback);
}

export function removeListener(callback: CallbackFn) {
    listeners.delete(callback);
}

/**
 * Search modules by keyword. This searches the factory methods,
 * meaning you can search all sorts of things, displayName, methodName, strings somewhere in the code, etc
 * @param filters One or more strings or regexes
 * @returns Mapping of found modules
 */
export function search(...filters: Array<string | RegExp>) {
    const results = {} as Record<number, Function>;
    const factories = wreq.m;
    outer:
    for (const id in factories) {
        const factory = factories[id].original ?? factories[id];
        const str: string = factory.toString();
        for (const filter of filters) {
            if (typeof filter === "string" && !str.includes(filter)) continue outer;
            if (filter instanceof RegExp && !filter.test(str)) continue outer;
        }
        results[id] = factory;
    }

    return results;
}

/**
 * Extract a specific module by id into its own Source File. This has no effect on
 * the code, it is only useful to be able to look at a specific module without having
 * to view a massive file. extract then returns the extracted module so you can jump to it.
 * As mentioned above, note that this extracted module is not actually used,
 * so putting breakpoints or similar will have no effect.
 * @param id The id of the module to extract
 */
export function extract(id: number) {
    const mod = wreq.m[id] as Function;
    if (!mod) return null;

    const code = `
// [EXTRACTED] WebpackModule${id}
// WARNING: This module was extracted to be more easily readable.
//          This module is NOT ACTUALLY USED! This means putting breakpoints will have NO EFFECT!!

${mod.toString()}
//# sourceURL=ExtractedWebpackModule${id}
`;
    const extracted = (0, eval)(code);
    return extracted as Function;
}