X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/5af0f9cb18436918d1660e8dd217224a8dbe7aef..e9026a0a6d8fc5cbcfa8d658176bfd2776cb550e:/hashsum.c

diff --git a/hashsum.c b/hashsum.c
index 0e537ee..11a5d37 100644
--- a/hashsum.c
+++ b/hashsum.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: hashsum.c,v 1.2 2000/07/15 21:14:05 mdw Exp $
+ * $Id: hashsum.c,v 1.9 2004/04/04 19:42:59 mdw Exp $
  *
  * Hash files using some secure hash function
  *
@@ -30,6 +30,29 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: hashsum.c,v $
+ * Revision 1.9  2004/04/04 19:42:59  mdw
+ * Add set -e.
+ *
+ * Revision 1.8  2001/04/19 18:26:33  mdw
+ * Add CRC as another hash function.
+ *
+ * Revision 1.7  2001/02/21 20:03:22  mdw
+ * Added support for MD2 hash function.
+ *
+ * Revision 1.6  2001/01/25 21:40:14  mdw
+ * Support for new SHA variants added.
+ *
+ * Revision 1.5  2000/12/06 20:33:27  mdw
+ * Make flags be macros rather than enumerations, to ensure that they're
+ * unsigned.
+ *
+ * Revision 1.4  2000/08/04 23:23:44  mdw
+ * Various <ctype.h> fixes.
+ *
+ * Revision 1.3  2000/07/29 17:02:43  mdw
+ * (checkhash): Be pettier about spaces between the hash and filename, for
+ * compatiblity with `md5sum'.
+ *
  * Revision 1.2  2000/07/15 21:14:05  mdw
  * Missed `-e' out of the usage string.
  *
@@ -59,32 +82,16 @@
 
 #include "ghash.h"
 
-#include "md4.h"
-#include "md5.h"
-#include "rmd128.h"
-#include "rmd160.h"
-#include "rmd256.h"
-#include "rmd320.h"
-#include "sha.h"
-#include "tiger.h"
-
 /*----- Static variables --------------------------------------------------*/
 
-static const gchash *hashtab[] = {
-  &md5, &md4, &sha, &rmd128, &rmd160, &rmd256, &rmd320, &tiger,
-  0
-};
-
-enum {
-  f_binary = 1,
-  f_bogus = 2,
-  f_verbose = 4,
-  f_check = 8,
-  f_files = 16,
-  f_raw = 32,
-  f_oddhash = 64,
-  f_escape = 128
-};
+#define f_binary 1u
+#define f_bogus 2u
+#define f_verbose 4u
+#define f_check 8u
+#define f_files 16u
+#define f_raw 32u
+#define f_oddhash 64u
+#define f_escape 128u
 
 /*----- Support functions -------------------------------------------------*/
 
@@ -186,9 +193,9 @@ static size_t gethex(const char *p, octet *q, size_t sz, char **pp)
 
 static const gchash *gethash(const char *name)
 {
-  const gchash **g, *gg = 0;
+  const gchash *const *g, *gg = 0;
   size_t sz = strlen(name);
-  for (g = hashtab; *g; g++) {
+  for (g = ghashtab; *g; g++) {
     if (strncmp(name, (*g)->name, sz) == 0) {
       if ((*g)->name[sz] == 0) {
 	gg = *g;
@@ -221,7 +228,7 @@ static int getstring(FILE *fp, const char *p, dstr *d, unsigned raw)
 
   /* --- Raw: just read exactly what's written up to a null byte --- */
 
-#define NEXTCH (fp ? getc(fp) : *p++)
+#define NEXTCH (fp ? getc(fp) : (unsigned char)*p++)
 #define EOFCH (fp ? EOF : 0)
 
   if (raw) {
@@ -245,7 +252,7 @@ static int getstring(FILE *fp, const char *p, dstr *d, unsigned raw)
 
 again:
   ch = NEXTCH;
-  while (isspace((unsigned char)ch))
+  while (isspace(ch))
     ch = NEXTCH;
   if (ch == '#') {
     do ch = NEXTCH; while (ch != '\n' && ch != EOFCH);
@@ -294,7 +301,7 @@ again:
 
     if (ch == q)
       break;
-    if (!q && isspace((unsigned char)ch))
+    if (!q && isspace(ch))
       break;
 
     /* --- Otherwise contribute and continue --- */
@@ -422,18 +429,19 @@ static int checkhash(const char *file, unsigned f, const gchash *gch)
 
     /* --- Otherwise it's a hex thing --- */
 
-    if ((q = str_getword(&p)) == 0)
+    q = p;
+    while (*p && *p != ' ')
+      p++;
+    if (!*p)
       continue;
+    *p++ = 0;
     if (gethex(q, buf, gch->hashsz, 0) < gch->hashsz)
       continue;
-    while (isspace((unsigned char)*p))
-      p++;
-    if (*p == '*') {
-      p++;
+    if (*p == '*')
       ff |= f_binary;
-    }
-    if (!*p)
+    else if (*p != ' ')
       continue;
+    p++;
 
     if (f & f_escape) {
       DRESET(&dd);
@@ -495,6 +503,11 @@ static int dohash(const char *file, unsigned f, const gchash *gch)
   return (rc);
 }
 
+static int dofile(const char *file, unsigned f, const gchash *gch)
+{
+  return (f & f_check ? checkhash : dohash)(file, f, gch);
+}
+
 static int hashfiles(const char *file, unsigned f, const gchash *gch)
 {
   FILE *fp;
@@ -513,7 +526,7 @@ static int hashfiles(const char *file, unsigned f, const gchash *gch)
     DRESET(&d);
     if (getstring(fp, 0, &d, f & f_raw))
       break;
-    if ((rrc = dohash(d.buf, f, gch)) != 0)
+    if ((rrc = dofile(d.buf, f, gch)) != 0)
       rc = rrc;
   }
 
@@ -522,11 +535,7 @@ static int hashfiles(const char *file, unsigned f, const gchash *gch)
 
 static int hashsum(const char *file, unsigned f, const gchash *gch)
 {
-  if (f & f_check)
-    return (checkhash(file, f, gch));
-  if (f & f_files)
-    return (hashfiles(file, f, gch));
-  return (dohash(file, f, gch));
+  return (f & f_files ? hashfiles : dofile)(file, f, gch);
 }
 
 /*----- Main driver -------------------------------------------------------*/
@@ -590,7 +599,7 @@ int main(int argc, char *argv[])
       gch = gethash(q);
     }
     if (!gch)
-      gch = hashtab[0];
+      gch = gethash("md5");
     xfree(q);
   }
 
@@ -638,10 +647,10 @@ int main(int argc, char *argv[])
 	break;
       case 'l': {
 	unsigned j;
-	for (j = 0; hashtab[j]; j++) {
+	for (j = 0; ghashtab[j]; j++) {
 	  if (j)
 	    fputc(' ', stdout);
-	  printf("%s", hashtab[j]->name);
+	  printf("%s", ghashtab[j]->name);
 	}
 	fputc('\n', stdout);
 	exit(0);