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py/builtinevex: Handle invalid filenames for execfile.

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If a non-string buffer was passed to execfile, then it would be passed
as a non-null-terminated char* to mp_lexer_new_from_file.

This changes mp_lexer_new_from_file to take a qstr instead (as in almost
all cases a qstr will be created from this input anyway to set the
`__file__` attribute on the module).

This now makes execfile require a string (not generic buffer) argument,
which is probably a good fix to make anyway.

Fixes issue #12522.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2023-09-27 13:43:50 +10:00
committed by Damien George
parent 480659b1ac
commit 5015779a6f
25 changed files with 62 additions and 46 deletions
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4
py/persistentcode.h
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@@ -113,10 +113,10 @@ enum {
void mp_raw_code_load(mp_reader_t *reader, mp_compiled_module_t *ctx);
void mp_raw_code_load_mem(const byte *buf, size_t len, mp_compiled_module_t *ctx);
void mp_raw_code_load_file(const char *filename, mp_compiled_module_t *ctx);
void mp_raw_code_load_file(qstr filename, mp_compiled_module_t *ctx);
void mp_raw_code_save(mp_compiled_module_t *cm, mp_print_t *print);
void mp_raw_code_save_file(mp_compiled_module_t *cm, const char *filename);
void mp_raw_code_save_file(mp_compiled_module_t *cm, qstr filename);
void mp_native_relocate(void *reloc, uint8_t *text, uintptr_t reloc_text);