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【Linux技术分享】捕捉打印时的中间文件

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捕捉打印时的中间文件

wine7.18以下

  • 在psdrv模块下查看PSDRV_ExtTextOut函数，会打印对应字体的样式选择
  • 在psdrv模块下PSDRV_SelectFont会选择字体
  • ScheduleJob函数中删除DeleteFileW(job->filename);函数，在C:\Windows\System32\spool\PRINTERS路径下存在待打印文件

高版本wine

  • 截取wine下打印数据目前在高版本wine下需要从/dlls/localspl/cups.c中打印逻辑中提取
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    --- a/dlls/localspl/cups.c
    +++ b/dlls/localspl/cups.c
    @@ -493,7 +493,24 @@ static NTSTATUS start_doc(void *args)
    static NTSTATUS write_doc(void *args)
    {
    	const struct write_doc_params *params = args;
    -    doc_t *doc  = (doc_t *)(size_t)params->doc;
    +    doc_t *doc = (doc_t *)(size_t)params->doc;
    +    TRACE("\n");
    +    static FILE *ps_file = NULL;
    +    if (!ps_file)
    :
    +    doc_t *doc = (doc_t *)(size_t)params->doc;
    +    /* =========== 新增：保存 PostScript 数据 =========== */
    +    static FILE *ps_file = NULL;
    +    if (!ps_file)
    +    {
    +        ps_file = fopen("/tmp/wine_print.ps", "wb");
    :
    +    doc_t *doc = (doc_t *)(size_t)params->doc;
    +    TRACE("\n");
    +    static FILE *ps_file = NULL;
    +    if (!ps_file)
    +    {
    +        ps_file = fopen("/tmp/wine_print.ps", "wb");
    +        if (!ps_file)
    +            ERR("Failed to open PS debug file\n");
    +    }
    +
    +    if (ps_file)
    +    {
    +        fwrite(params->buf, 1, params->size, ps_file);
    +        fflush(ps_file);
    +        TRACE("Saved %u bytes to /tmp/wine_print.ps\n", params->size);
    :
    +    doc_t *doc = (doc_t *)(size_t)params->doc;
    +    TRACE("\n");
    +    static FILE *ps_file = NULL;
    +    if (!ps_file)
    +    {
    +        ps_file = fopen("/tmp/wine_print.ps", "wb");
    +        if (!ps_file)
    +            ERR("Failed to open PS debug file\n");
    +    }
    +
    +    if (ps_file)
    +    {
    +        fwrite(params->buf, 1, params->size, ps_file);
    +        fflush(ps_file);
    +        TRACE("Saved %u bytes to /tmp/wine_print.ps\n", params->size);
    +    }
    	return doc->write_doc(doc, params->buf, params->size);
    }