1/* 2 * Adapted from: apptype.c, Written by Eberhard Mattes and put into the 3 * public domain 4 * 5 * Notes: 1. Qualify the filename so that DosQueryAppType does not do extraneous 6 * searches. 7 * 8 * 2. DosQueryAppType will return FAPPTYP_DOS on a file ending with ".com" 9 * (other than an OS/2 exe or Win exe with this name). Eberhard Mattes 10 * remarks Tue, 6 Apr 93: Moreover, it reports the type of the (new and very 11 * bug ridden) Win Emacs as "OS/2 executable". 12 * 13 * 3. apptype() uses the filename if given, otherwise a tmp file is created with 14 * the contents of buf. If buf is not the complete file, apptype can 15 * incorrectly identify the exe type. The "-z" option of "file" is the reason 16 * for this ugly code. 17 */ 18 19/* 20 * amai: Darrel Hankerson did the changes described here. 21 * 22 * It remains to check the validity of comments (2.) since it's referred to an 23 * "old" OS/2 version. 24 * 25 */ 26 27#include "file.h" 28 29#ifndef lint 30FILE_RCSID("@(#)$File: apptype.c,v 1.14 2018/09/09 20:33:28 christos Exp $") 31#endif /* lint */ 32 33#include <stdlib.h> 34#include <string.h> 35 36#ifdef __EMX__ 37#include <io.h> 38#define INCL_DOSSESMGR 39#define INCL_DOSERRORS 40#define INCL_DOSFILEMGR 41#include <os2.h> 42typedef ULONG APPTYPE; 43 44protected int 45file_os2_apptype(struct magic_set *ms, const char *fn, const void *buf, 46 size_t nb) 47{ 48 APPTYPE rc, type; 49 char path[_MAX_PATH], drive[_MAX_DRIVE], dir[_MAX_DIR], 50 fname[_MAX_FNAME], ext[_MAX_EXT]; 51 char *filename; 52 FILE *fp; 53 54 if (fn) 55 filename = strdup(fn); 56 else if ((filename = tempnam("./", "tmp")) == NULL) { 57 file_error(ms, errno, "cannot create tempnam"); 58 return -1; 59 } 60 /* qualify the filename to prevent extraneous searches */ 61 _splitpath(filename, drive, dir, fname, ext); 62 (void)sprintf(path, "%s%s%s%s", drive, 63 (*dir == '\0') ? "./" : dir, 64 fname, 65 (*ext == '\0') ? "." : ext); 66 67 if (fn == NULL) { 68 if ((fp = fopen(path, "wb")) == NULL) { 69 file_error(ms, errno, "cannot open tmp file `%s'", path); 70 return -1; 71 } 72 if (fwrite(buf, 1, nb, fp) != nb) { 73 file_error(ms, errno, "cannot write tmp file `%s'", 74 path); 75 (void)fclose(fp); 76 return -1; 77 } 78 (void)fclose(fp); 79 } 80 rc = DosQueryAppType((unsigned char *)path, &type); 81 82 if (fn == NULL) { 83 unlink(path); 84 free(filename); 85 } 86#if 0 87 if (rc == ERROR_INVALID_EXE_SIGNATURE) 88 printf("%s: not an executable file\n", fname); 89 else if (rc == ERROR_FILE_NOT_FOUND) 90 printf("%s: not found\n", fname); 91 else if (rc == ERROR_ACCESS_DENIED) 92 printf("%s: access denied\n", fname); 93 else if (rc != 0) 94 printf("%s: error code = %lu\n", fname, rc); 95 else 96#else 97 98 /* 99 * for our purpose here it's sufficient to just ignore the error and 100 * return w/o success (=0) 101 */ 102 103 if (rc) 104 return (0); 105 106#endif 107 108 if (type & FAPPTYP_32BIT) 109 if (file_printf(ms, "32-bit ") == -1) 110 return -1; 111 if (type & FAPPTYP_PHYSDRV) { 112 if (file_printf(ms, "physical device driver") == -1) 113 return -1; 114 } else if (type & FAPPTYP_VIRTDRV) { 115 if (file_printf(ms, "virtual device driver") == -1) 116 return -1; 117 } else if (type & FAPPTYP_DLL) { 118 if (type & FAPPTYP_PROTDLL) 119 if (file_printf(ms, "protected ") == -1) 120 return -1; 121 if (file_printf(ms, "DLL") == -1) 122 return -1; 123 } else if (type & (FAPPTYP_WINDOWSREAL | FAPPTYP_WINDOWSPROT)) { 124 if (file_printf(ms, "Windows executable") == -1) 125 return -1; 126 } else if (type & FAPPTYP_DOS) { 127 /* 128 * The API routine is partially broken on filenames ending 129 * ".com". 130 */ 131 if (stricmp(ext, ".com") == 0) 132 if (strncmp((const char *)buf, "MZ", 2)) 133 return (0); 134 if (file_printf(ms, "DOS executable") == -1) 135 return -1; 136 /* ---------------------------------------- */ 137 /* Might learn more from the magic(4) entry */ 138 if (file_printf(ms, ", magic(4)-> ") == -1) 139 return -1; 140 return (0); 141 /* ---------------------------------------- */ 142 } else if (type & FAPPTYP_BOUND) { 143 if (file_printf(ms, "bound executable") == -1) 144 return -1; 145 } else if ((type & 7) == FAPPTYP_WINDOWAPI) { 146 if (file_printf(ms, "PM executable") == -1) 147 return -1; 148 } else if (file_printf(ms, "OS/2 executable") == -1) 149 return -1; 150 151 switch (type & (FAPPTYP_NOTWINDOWCOMPAT | 152 FAPPTYP_WINDOWCOMPAT | 153 FAPPTYP_WINDOWAPI)) { 154 case FAPPTYP_NOTWINDOWCOMPAT: 155 if (file_printf(ms, " [NOTWINDOWCOMPAT]") == -1) 156 return -1; 157 break; 158 case FAPPTYP_WINDOWCOMPAT: 159 if (file_printf(ms, " [WINDOWCOMPAT]") == -1) 160 return -1; 161 break; 162 case FAPPTYP_WINDOWAPI: 163 if (file_printf(ms, " [WINDOWAPI]") == -1) 164 return -1; 165 break; 166 } 167 return 1; 168} 169#endif 170