X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=lib%2Fhash.c;fp=lib%2Fhash.c;h=0000000000000000000000000000000000000000;hb=b7a32e2d73e3ab1add8208d3e157f7269a31ef4d;hp=2a7cbf3cda3bd90ca07b5397c185afbb1f6127de;hpb=ac902a8299ff4469b356836f431ead31c3377377;p=innduct.git

diff --git a/lib/hash.c b/lib/hash.c
deleted file mode 100644
index 2a7cbf3..0000000
--- a/lib/hash.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/* This provides a generic hash function for use w/INN.  Currently
-   is implemented using MD5, but should probably have a mechanism for
-   choosing the hash algorithm and tagging the hash with the algorithm
-   used */
-#include "config.h"
-#include "clibrary.h"
-#include <ctype.h>
-
-#include "inn/md5.h"
-#include "libinn.h"
-
-static HASH empty= { { 0, 0, 0, 0, 0, 0, 0, 0,
-		       0, 0, 0, 0, 0, 0, 0, 0 }};
-
-/* cipoint - where in this message-ID does it become case-insensitive?
- *
- * The RFC822 code is not quite complete.  Absolute, total, full RFC822
- * compliance requires a horrible parsing job, because of the arcane
- * quoting conventions -- abc"def"ghi is not equivalent to abc"DEF"ghi,
- * for example.  There are three or four things that might occur in the
- * domain part of a message-id that are case-sensitive.  They don't seem
- * to ever occur in real news, thank Cthulhu.  (What?  You were expecting
- * a merciful and forgiving deity to be invoked in connection with RFC822?
- * Forget it; none of them would come near it.)
- *
- * Returns: pointer into s, or NULL for "nowhere"
- */
-static const char *
-cipoint(const char *s, size_t size)
-{
-    char *p;
-    static const char post[] = "postmaster";
-    static int plen = sizeof(post) - 1;
-
-    if ((p = memchr(s, '@', size))== NULL)	/* no local/domain split */
-	return NULL;				/* assume all local */
-    if ((p - (s + 1) == plen) && !strncasecmp(post, s+1, plen)) {
-	/* crazy -- "postmaster" is case-insensitive */
-	return s;
-    }
-    return p;
-}
-
-HASH
-Hash(const void *value, const size_t len)
-{
-    struct md5_context context;
-    HASH hash;
-
-    md5_init(&context);
-    md5_update(&context, value, len);
-    md5_final(&context);
-    memcpy(&hash,
-	   &context.digest,
-	   (sizeof(hash) < sizeof(context.digest)) ? sizeof(hash) : sizeof(context.digest));
-    return hash;
-}
-
-HASH
-HashMessageID(const char *MessageID)
-{
-    char                *new = NULL;
-    const char          *cip, *p = NULL;
-    char                *q;
-    int                 len;
-    HASH                hash;
-
-    len = strlen(MessageID);
-    cip = cipoint(MessageID, len);
-    if (cip != NULL) {
-        for (p = cip + 1; *p != '\0'; p++) {
-            if (!CTYPE(islower, *p)) {
-                new = xstrdup(MessageID);
-                break;
-            }
-        }
-    }
-    if (new != NULL)
-        for (q = new + (p - MessageID); *q != '\0'; q++)
-            *q = tolower(*q);
-    hash = Hash(new ? new : MessageID, len);
-    if (new != NULL)
-	free(new);
-    return hash;
-}
-
-/*
-**  Check if the hash is all zeros, and subseqently empty, see HashClear
-**  for more info on this.
-*/
-bool
-HashEmpty(const HASH h)
-{
-    return (memcmp(&empty, &h, sizeof(HASH)) == 0);
-}
-
-/*
-**  Set the hash to all zeros.  Using all zeros as the value for empty 
-**  introduces the possibility of colliding w/a value that actually hashes
-**  to all zeros, but that's fairly unlikely.
-*/
-void
-HashClear(HASH *hash)
-{
-    memset(hash, '\0', sizeof(HASH));
-}
-
-/*
-**  Convert the binary form of the hash to a form that we can use in error
-**  messages and logs.
-*/
-char *
-HashToText(const HASH hash)
-{
-    static const char	hex[] = "0123456789ABCDEF";
-    const char		*p;
-    unsigned int	i;
-    static char		hashstr[(sizeof(HASH)*2) + 1];
-
-    for (p = hash.hash, i = 0; i < sizeof(HASH); i++, p++) {
-	hashstr[i * 2] = hex[(*p & 0xF0) >> 4];
-	hashstr[(i * 2) + 1] = hex[*p & 0x0F];
-    }
-    hashstr[(sizeof(HASH) * 2)] = '\0';
-    return hashstr;
-}
-
-/*
-** Converts a hex digit and converts it to a int
-*/
-static
-int hextodec(const int c)
-{
-    return isdigit(c) ? (c - '0') : ((c - 'A') + 10);
-}
-
-/*
-**  Convert the ASCII representation of the hash back to the canonical form
-*/
-HASH
-TextToHash(const char *text)
-{
-    char                *q;
-    int                 i;
-    HASH                hash;
-
-    for (q = (char *)&hash, i = 0; i != sizeof(HASH); i++) {
-	q[i] = (hextodec(text[i * 2]) << 4) + hextodec(text[(i * 2) + 1]);
-    }
-    return hash;
-}
-
-/* This is rather gross, we compare like the last 4 bytes of the
-   hash are at the beginning because dbz considers them to be the
-   most significant bytes */
-int HashCompare(const HASH *h1, const HASH *h2) {
-    int i;
-    int tocomp = sizeof(HASH) - sizeof(unsigned long);
-    
-    if ((i = memcmp(&h1->hash[tocomp], &h1->hash[tocomp], sizeof(unsigned long))))
-	return i;
-    return memcmp(h1, h2, sizeof(HASH));
-}