Promote file.

1 files changed, 0 insertions, 308 deletions

diff --git a/toys/pending/file.c b/toys/pending/file.c
deleted file mode 100644
index b53bec0a..00000000
--- a/toys/pending/file.c
+++ /dev/null
@@ -1,308 +0,0 @@
-/* file.c - describe file type
- *
- * Copyright 2016 The Android Open Source Project
- *
- * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/file.html
- *
- * TODO: ar
-
-USE_FILE(NEWTOY(file, "<1", TOYFLAG_USR|TOYFLAG_BIN))
-
-config FILE
-  bool "file"
-  default n
-  help
-    usage: file [file...]
-
-    Examine the given files and describe their content types.
-*/
-
-#define FOR_file
-#include "toys.h"
-
-GLOBALS(
-  int max_name_len;
-)
-
-// We don't trust elf.h to be there, and two codepaths for 32/64 is awkward
-// anyway, so calculate struct offsets manually. (It's a fixed ABI.)
-static void do_elf_file(int fd, struct stat *sb)
-{
-  int endian = toybuf[5], bits = toybuf[4], i, j;
-  int64_t (*elf_int)(void *ptr, unsigned size) = peek_le;
-  // Values from include/linux/elf-em.h (plus arch/*/include/asm/elf.h)
-  // Names are linux/arch/ directory (sometimes before 32/64 bit merges)
-  struct {int val; char *name;} type[] = {{0x9026, "alpha"}, {93, "arc"},
-    {195, "arcv2"}, {40, "arm"}, {183, "arm64"}, {0x18ad, "avr32"},
-    {106, "blackfin"}, {140, "c6x"}, {23, "cell"}, {76, "cris"},
-    {0x5441, "frv"}, {46, "h8300"}, {164, "hexagon"}, {50, "ia64"},
-    {88, "m32r"}, {0x9041, "m32r"}, {4, "m68k"}, {174, "metag"},
-    {0xbaab, "microblaze"}, {8, "mips"}, {10, "mips-old"}, {89, "mn10300"},
-    {0xbeef, "mn10300-old"}, {113, "nios2"}, {92, "openrisc"},
-    {0x8472, "openrisc-old"}, {15, "parisc"}, {20, "ppc"}, {21, "ppc64"},
-    {22, "s390"}, {0xa390, "s390-old"}, {135, "score"}, {42, "sh"},
-    {2, "sparc"}, {18, "sparc8+"}, {43, "sparc9"}, {188, "tile"},
-    {191, "tilegx"}, {3, "386"}, {6, "486"}, {62, "x86-64"}, {94, "xtensa"},
-    {0xabc7, "xtensa-old"}
-  };
-  int dynamic = 0;
-  int stripped = 1;
-  char *map;
-  off_t phoff, shoff;
-  int phsize, phnum, shsize, shnum;
-
-  printf("ELF ");
-
-  // executable (ELF says this is short but reality says byte, not MSB swapped)
-  i = toybuf[16];
-  if (i == 1) printf("relocatable");
-  else if (i == 2) printf("executable");
-  else if (i == 3) printf("shared object");
-  else if (i == 4) printf("core dump");
-  else printf("(bad type %d)", i);
-  printf(", ");
-
-  // "64-bit"
-  if (bits == 1) printf("32-bit ");
-  else if (bits == 2) printf("64-bit ");
-  else {
-    printf("(bad class %d) ", bits);
-    bits = 0;
-  }
-
-  // "LSB"
-  if (endian == 1) printf("LSB ");
-  else if (endian == 2) {
-    printf("MSB ");
-    elf_int = peek_be;
-  } else {
-    printf("(bad endian %d) \n", endian);
-    endian = 0;
-  }
-
-  // e_machine, ala "x86", from big table above
-  j = elf_int(toybuf+18, 2);
-  for (i = 0; i<ARRAY_LEN(type); i++) if (j==type[i].val) break;
-  if (i<ARRAY_LEN(type)) printf("%s", type[i].name);
-  else printf("(unknown arch %d)", j);
-
-  bits--;
-  // If what we've seen so far doesn't seem consistent, bail.
-  if (!((bits&1)==bits && endian &&
-       (i = elf_int(toybuf+42+12*bits, 2)) == 32+24*bits)) {
-    printf(", corrupt?\n");
-    return;
-  }
-
-  // Stash what we need from the header; it's okay to reuse toybuf after this.
-  phsize = i;
-  phnum = elf_int(toybuf+44+12*bits, 2);
-  phoff = elf_int(toybuf+28+4*bits, 4+4*bits);
-  shsize = elf_int(toybuf+46+12*bits, 2);
-  shnum = elf_int(toybuf+48+12*bits, 2);
-  shoff = elf_int(toybuf+32+8*bits, 4+4*bits);
-
-  map = mmap(0, sb->st_size, PROT_READ, MAP_SHARED, fd, 0);
-  if (!map) perror_exit("mmap");
-
-  // We need to read the phdrs for dynamic vs static and any notes.
-  // (Note: fields got reordered for 64 bit)
-  for (i = 0; i<phnum; i++) {
-    char *phdr = map+phoff+i*phsize;
-    int p_type = elf_int(phdr, 4);
-    long long p_offset, p_filesz;
-
-    if (p_type==2 /*PT_DYNAMIC*/) dynamic = 1;
-    if (p_type!=3 /*PT_INTERP*/ && p_type!=4 /*PT_NOTE*/) continue;
-
-    j = bits+1;
-    p_offset = elf_int(phdr+4*j, 4*j);
-    p_filesz = elf_int(phdr+16*j, 4*j);
-
-    if (p_type==3 /*PT_INTERP*/)
-      printf(", dynamic (%.*s)", (int)p_filesz, map+p_offset);
-    else {
-      char *note = map+p_offset;
-
-      // A PT_NOTE phdr is a sequence of entries, each consisting of an
-      // ndhr followed by n_namesz+n_descsz bytes of data (each of those
-      // rounded up to the next 4 bytes, without this being reflected in
-      // the header byte counts themselves).
-      while (p_filesz >= 3*4) { // Don't try to read a truncated entry.
-        int n_namesz = elf_int(note, 4);
-        int n_descsz = elf_int(note+4, 4);
-        int n_type = elf_int(note+8, 4);
-        int notesz = 3*4 + ((n_namesz+3)&~3) + ((n_descsz+3)&~3);
-
-        if (n_namesz==4 && !memcmp(note+12, "GNU", 4)) {
-          if (n_type == 3 /*NT_GNU_BUILD_ID*/) {
-            printf(", BuildID[%s]=", (n_descsz==20)?"sha1":"md5");
-            for (j = 0; j < n_descsz; ++j) printf("%02x", note[16 + j]);
-          }
-        } else if (n_namesz==8 && !memcmp(note+12, "Android", 8)) {
-          if (n_type==1) printf(", for Android %d", (int)elf_int(note+20, 4));
-        }
-
-        note += notesz;
-        p_filesz -= notesz;
-      }
-    }
-  }
-  if (!dynamic) printf(", static");
-
-  // We need to read the shdrs for stripped/unstripped.
-  // (Note: fields got reordered for 64 bit)
-  for (i = 0; i<shnum; i++) {
-    char *shdr = map+shoff+i*shsize;
-    int sh_type = elf_int(shdr+4, 4);
-
-    if (sh_type == 2 /*SHT_SYMTAB*/) {
-      stripped = 0;
-      break;
-    }
-  }
-  printf(", %sstripped", stripped ? "" : "not ");
-  xputc('\n');
-
-  munmap(map, sb->st_size);
-}
-
-static void do_regular_file(int fd, char *name, struct stat *sb)
-{
-  char *s;
-  int len = read(fd, s = toybuf, sizeof(toybuf)-256);
-  int magic;
-
-  if (len<0) perror_msg("%s", name);
-
-  if (len>40 && strstart(&s, "\177ELF")) do_elf_file(fd, sb);
-  else if (len>28 && strstart(&s, "\x89PNG\x0d\x0a\x1a\x0a")) {
-    // PNG is big-endian: https://www.w3.org/TR/PNG/#7Integers-and-byte-order
-    int chunk_length = peek_be(s, 4);
-
-    xprintf("PNG image data");
-
-    // The IHDR chunk comes first: https://www.w3.org/TR/PNG/#11IHDR
-    s += 4;
-    if (chunk_length == 13 && strstart(&s, "IHDR")) {
-      // https://www.w3.org/TR/PNG/#6Colour-values
-      char *c = 0, *colors[] = {"grayscale", 0, "color RGB", "indexed color",
-                                "grayscale with alpha", 0, "color RGBA"};
-
-      if (s[9]<ARRAY_LEN(colors)) c = colors[s[9]];
-      if (!c) c = "unknown";
-
-      xprintf(", %d x %d, %d-bit/%s, %sinterlaced", (int)peek_be(s, 4),
-        (int)peek_be(s+4, 4), s[8], c, s[12] ? "" : "non-");
-    }
-
-    xputc('\n');
-
-  // https://www.w3.org/Graphics/GIF/spec-gif89a.txt
-  } else if (len>16 && (strstart(&s, "GIF87a") || strstart(&s, "GIF89a")))
-    xprintf("GIF image data, %d x %d\n",
-      (int)peek_le(s, 2), (int)peek_le(s+8, 2));
-
-  // TODO: parsing JPEG for width/height is harder than GIF or PNG.
-  else if (len>32 && memcmp(toybuf, "\xff\xd8", 2) == 0)
-    xprintf("JPEG image data\n");
-
-  // https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html
-  else if (len>8 && strstart(&s, "\xca\xfe\xba\xbe"))
-    xprintf("Java class file, version %d.%d\n",
-      (int)peek_be(s+2, 2), (int)peek_be(s, 2));
-
-  // https://people.freebsd.org/~kientzle/libarchive/man/cpio.5.txt
-  // the lengths for cpio are size of header + 9 bytes, since any valid
-  // cpio archive ends with a record for "TARGET!!!"
-  else if (len>85 && strstart(&s, "07070")) {
-    char *cpioformat = "unknown type";
-    if (toybuf[5] == '7') cpioformat = "pre-SVR4 or odc";
-    else if (toybuf[5] == '1') cpioformat = "SVR4 with no CRC";
-    else if (toybuf[5] == '2') cpioformat = "SVR4 with CRC";
-    xprintf("ASCII cpio archive (%s)\n", cpioformat);
-  }
-  else if (len>33 && (magic=peek(&s,2), magic==0143561 || magic==070707)) {
-    if (magic == 0143561) printf("byte-swapped ");
-    xprintf("cpio archive\n");
-  }
-  // tar archive (ustar/pax or gnu)
-  else if (len>500 && !strncmp(s+257, "ustar", 5)) {
-    xprintf("POSIX tar archive%s\n", strncmp(s+262,"  ",2)?"":" (GNU)");
-  }
-  // zip/jar/apk archive, ODF/OOXML document, or such
-  else if (len>5 && strstart(&s, "PK\03\04")) {
-    int ver = (int)(char)(toybuf[4]);
-    xprintf("Zip archive data");
-    if (ver)
-      xprintf(", requires at least v%d.%d to extract", ver/10, ver%10);
-    xputc('\n');
-  }
-  else {
-    char *what = 0;
-    int i, bytes;
-
-    // If shell script, report which interpreter
-    if (len>3 && strstart(&s, "#!")) {
-      // Whitespace is allowed between the #! and the interpreter
-      while (isspace(*s)) s++;
-      if (strstart(&s, "/usr/bin/env")) while (isspace(*s)) s++;
-      for (what = s; (s-toybuf)<len && !isspace(*s); s++);
-      strcpy(s, " script");
-
-    // Distinguish ASCII text, UTF-8 text, or data
-    } else for (i = 0; i<len; ++i) {
-      if (!(isprint(toybuf[i]) || isspace(toybuf[i]))) {
-        wchar_t wc;
-        if ((bytes = mbrtowc(&wc, s+i, len-i, 0))>0 && wcwidth(wc)>=0) {
-          i += bytes-1;
-          if (!what) what = "UTF-8 text";
-        } else {
-          what = "data";
-          break;
-        }
-      }
-    }
-    xputs(what ? what : "ASCII text");
-  }
-}
-
-void file_main(void)
-{
-  char **arg;
-
-  for (arg = toys.optargs; *arg; ++arg) {
-    int name_len = strlen(*arg);
-
-    if (name_len > TT.max_name_len) TT.max_name_len = name_len;
-  }
-
-  // Can't use loopfiles here because it doesn't call function when can't open
-  for (arg = toys.optargs; *arg; arg++) {
-    struct stat sb;
-    char *name = *arg, *what = "cannot open";
-
-    xprintf("%s: %*s", name, (int)(TT.max_name_len - strlen(name)), "");
-
-    if (!lstat(name, &sb)) {
-      if (S_ISFIFO(sb.st_mode)) what = "fifo";
-      else if (S_ISREG(sb.st_mode)) {
-        int fd = !strcmp(name, "-") ? 0 : open(name, O_RDONLY);
-
-        if (fd!=-1) {
-          if (!sb.st_size) what = "empty";
-          else do_regular_file(fd, name, &sb);
-          if (fd) close(fd);
-          if (sb.st_size) continue;
-        }
-      } else if (S_ISBLK(sb.st_mode)) what = "block special";
-      else if (S_ISCHR(sb.st_mode)) what = "character special";
-      else if (S_ISDIR(sb.st_mode)) what = "directory";
-      else if (S_ISSOCK(sb.st_mode)) what = "socket";
-      else if (S_ISLNK(sb.st_mode)) what = "symbolic link";
-      else what = "unknown";
-    }
-
-    xputs(what);
-  }
-}