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Diffstat (limited to 'src/apptype.c')
| -rw-r--r-- | src/apptype.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/apptype.c b/src/apptype.c new file mode 100644 index 0000000..fcd764e --- /dev/null +++ b/src/apptype.c @@ -0,0 +1,169 @@ +/* + * Adapted from: apptype.c, Written by Eberhard Mattes and put into the + * public domain + * + * Notes: 1. Qualify the filename so that DosQueryAppType does not do extraneous + * searches. + * + * 2. DosQueryAppType will return FAPPTYP_DOS on a file ending with ".com" + * (other than an OS/2 exe or Win exe with this name). Eberhard Mattes + * remarks Tue, 6 Apr 93: Moreover, it reports the type of the (new and very + * bug ridden) Win Emacs as "OS/2 executable". + * + * 3. apptype() uses the filename if given, otherwise a tmp file is created with + * the contents of buf. If buf is not the complete file, apptype can + * incorrectly identify the exe type. The "-z" option of "file" is the reason + * for this ugly code. + */ + +/* + * amai: Darrel Hankerson did the changes described here. + * + * It remains to check the validity of comments (2.) since it's referred to an + * "old" OS/2 version. + * + */ + +#include "file.h" + +#ifndef lint +FILE_RCSID("@(#)$File: apptype.c,v 1.13 2011/09/07 21:57:15 christos Exp $") +#endif /* lint */ + +#include <stdlib.h> +#include <string.h> + +#ifdef __EMX__ +#include <io.h> +#define INCL_DOSSESMGR +#define INCL_DOSERRORS +#define INCL_DOSFILEMGR +#include <os2.h> +typedef ULONG APPTYPE; + +protected int +file_os2_apptype(struct magic_set *ms, const char *fn, const void *buf, + size_t nb) +{ + APPTYPE rc, type; + char path[_MAX_PATH], drive[_MAX_DRIVE], dir[_MAX_DIR], + fname[_MAX_FNAME], ext[_MAX_EXT]; + char *filename; + FILE *fp; + + if (fn) + filename = strdup(fn); + else if ((filename = tempnam("./", "tmp")) == NULL) { + file_error(ms, errno, "cannot create tempnam"); + return -1; + } + /* qualify the filename to prevent extraneous searches */ + _splitpath(filename, drive, dir, fname, ext); + (void)sprintf(path, "%s%s%s%s", drive, + (*dir == '\0') ? "./" : dir, + fname, + (*ext == '\0') ? "." : ext); + + if (fn == NULL) { + if ((fp = fopen(path, "wb")) == NULL) { + file_error(ms, errno, "cannot open tmp file `%s'", path); + return -1; + } + if (fwrite(buf, 1, nb, fp) != nb) { + file_error(ms, errno, "cannot write tmp file `%s'", + path); + (void)fclose(fp); + return -1; + } + (void)fclose(fp); + } + rc = DosQueryAppType((unsigned char *)path, &type); + + if (fn == NULL) { + unlink(path); + free(filename); + } +#if 0 + if (rc == ERROR_INVALID_EXE_SIGNATURE) + printf("%s: not an executable file\n", fname); + else if (rc == ERROR_FILE_NOT_FOUND) + printf("%s: not found\n", fname); + else if (rc == ERROR_ACCESS_DENIED) + printf("%s: access denied\n", fname); + else if (rc != 0) + printf("%s: error code = %lu\n", fname, rc); + else +#else + + /* + * for our purpose here it's sufficient to just ignore the error and + * return w/o success (=0) + */ + + if (rc) + return (0); + +#endif + + if (type & FAPPTYP_32BIT) + if (file_printf(ms, "32-bit ") == -1) + return -1; + if (type & FAPPTYP_PHYSDRV) { + if (file_printf(ms, "physical device driver") == -1) + return -1; + } else if (type & FAPPTYP_VIRTDRV) { + if (file_printf(ms, "virtual device driver") == -1) + return -1; + } else if (type & FAPPTYP_DLL) { + if (type & FAPPTYP_PROTDLL) + if (file_printf(ms, "protected ") == -1) + return -1; + if (file_printf(ms, "DLL") == -1) + return -1; + } else if (type & (FAPPTYP_WINDOWSREAL | FAPPTYP_WINDOWSPROT)) { + if (file_printf(ms, "Windows executable") == -1) + return -1; + } else if (type & FAPPTYP_DOS) { + /* + * The API routine is partially broken on filenames ending + * ".com". + */ + if (stricmp(ext, ".com") == 0) + if (strncmp((const char *)buf, "MZ", 2)) + return (0); + if (file_printf(ms, "DOS executable") == -1) + return -1; + /* ---------------------------------------- */ + /* Might learn more from the magic(4) entry */ + if (file_printf(ms, ", magic(4)-> ") == -1) + return -1; + return (0); + /* ---------------------------------------- */ + } else if (type & FAPPTYP_BOUND) { + if (file_printf(ms, "bound executable") == -1) + return -1; + } else if ((type & 7) == FAPPTYP_WINDOWAPI) { + if (file_printf(ms, "PM executable") == -1) + return -1; + } else if (file_printf(ms, "OS/2 executable") == -1) + return -1; + + switch (type & (FAPPTYP_NOTWINDOWCOMPAT | + FAPPTYP_WINDOWCOMPAT | + FAPPTYP_WINDOWAPI)) { + case FAPPTYP_NOTWINDOWCOMPAT: + if (file_printf(ms, " [NOTWINDOWCOMPAT]") == -1) + return -1; + break; + case FAPPTYP_WINDOWCOMPAT: + if (file_printf(ms, " [WINDOWCOMPAT]") == -1) + return -1; + break; + case FAPPTYP_WINDOWAPI: + if (file_printf(ms, " [WINDOWAPI]") == -1) + return -1; + break; + } + return 1; +} +#endif |