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build_romfs: Fix char signedness issue in path hash calculation

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This commit is contained in:
Michael Scire 2018-04-18 09:58:48 -06:00
parent 0fe4070bfa
commit c5f51d6cef
1 changed files with 4 additions and 3 deletions
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7
src/romfs.c
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@ -90,12 +90,13 @@ romfs_fentry_t *romfs_get_fentry(romfs_fentry_t *files, uint32_t offset) {
return (romfs_fentry_t *)((char *)files + offset);
}
uint32_t calc_path_hash(uint32_t parent, const char *path, uint32_t start, size_t path_len) {
uint32_t calc_path_hash(uint32_t parent, const unsigned char *path, uint32_t start, size_t path_len) {
uint32_t hash = parent ^ 123456789;
for (uint32_t i = 0; i < path_len; i++) {
hash = (hash >> 5) | (hash << 27);
hash ^= path[start + i];
}
return hash;
}
@ -381,7 +382,7 @@ size_t build_romfs_into_file(filepath_t *in_dirpath, FILE *f_out, off_t base_off
cur_entry->size = le_dword(cur_file->size);
uint32_t name_size = strlen(cur_file->cur_path.char_path)-1;
uint32_t hash = calc_path_hash(cur_file->parent->entry_offset, cur_file->cur_path.char_path, 1, name_size);
uint32_t hash = calc_path_hash(cur_file->parent->entry_offset, (unsigned char *)cur_file->cur_path.char_path, 1, name_size);
cur_entry->hash = file_hash_table[hash % file_hash_table_entry_count];
file_hash_table[hash % file_hash_table_entry_count] = le_word(cur_file->entry_offset);
@ -401,7 +402,7 @@ size_t build_romfs_into_file(filepath_t *in_dirpath, FILE *f_out, off_t base_off
cur_entry->file = le_word(cur_dir->file == NULL ? ROMFS_ENTRY_EMPTY : cur_dir->file->entry_offset);
uint32_t name_size = (cur_dir == root_ctx) ? 0 : strlen(cur_dir->cur_path.char_path)-1;
uint32_t hash = calc_path_hash((cur_dir == root_ctx) ? 0 : cur_dir->parent->entry_offset, cur_dir->cur_path.char_path, 1, name_size);
uint32_t hash = calc_path_hash((cur_dir == root_ctx) ? 0 : cur_dir->parent->entry_offset, (unsigned char *)cur_dir->cur_path.char_path, 1, name_size);
cur_entry->hash = dir_hash_table[hash % dir_hash_table_entry_count];
dir_hash_table[hash % dir_hash_table_entry_count] = le_word(cur_dir->entry_offset);