68 lines
2.9 KiB
C
68 lines
2.9 KiB
C
// The MIT License (MIT)
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//
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// Copyright (C) 2026 Scott Duensing
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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// obfuscate.h -- Release build name obfuscation
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//
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// Replaces form and control names with generated tokens (C1, C2, ...)
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// across the compiled module AND the raw .frm text resources. This
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// hinders casual decompilation by removing meaningful identifiers
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// from event handler names (e.g., BtnHello_Click -> C3_Click).
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#ifndef DVXBASIC_OBFUSCATE_H
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#define DVXBASIC_OBFUSCATE_H
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#include "../runtime/vm.h"
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// One .frm text after obfuscation (data is newly-allocated).
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typedef struct {
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uint8_t *data;
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int32_t len;
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} BasObfFrmT;
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// Obfuscate form/control names in the module and all .frm texts.
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//
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// Reads original names from the Begin declarations in each .frm,
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// generates C1..Cn, then rewrites:
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// - The .frm text (form/control name declarations, stripping the
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// trailing BASIC code section after the outer form closes)
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// - Module string constants matching any original name
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// - Procedure names matching <OrigName>_<Event>
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// - formVarInfo entries keyed by form name
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//
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// frmTexts / frmLens: input .frm buffers (one per form).
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// outFrms: caller-allocated array of frmCount entries; function fills
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// in .data (malloc'd, caller frees) and .len for each.
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void basObfuscateNames(BasModuleT *mod, const char **frmTexts, const int32_t *frmLens, int32_t frmCount, BasObfFrmT *outFrms);
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// Strip comments from .frm text.
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//
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// Removes both whole-line comments (lines whose first non-whitespace
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// token is `'` or `REM`) and trailing comments (everything from the
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// first unquoted `'` to end of line). Pure-whitespace lines are
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// dropped. Quoted string literals are preserved as-is.
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//
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// srcLen: input length; outBuf: caller-allocated buffer of outCap bytes.
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// Returns the number of bytes written.
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int32_t basStripFrmComments(const char *src, int32_t srcLen, uint8_t *outBuf, int32_t outCap);
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#endif // DVXBASIC_OBFUSCATE_H
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