Don't throw out WEIRD - yet (I committed my local changes together with my last fix. D'oh!)

(This used to be commit 5191719eeec7062118da2be3aefe35d065e97900)

1 files changed, 108 insertions, 0 deletions

diff --git a/source3/lib/iconv.c b/source3/lib/iconv.c
index e54a74864e..3498f976b3 100644
--- a/source3/lib/iconv.c
+++ b/source3/lib/iconv.c
@@ -25,6 +25,8 @@ static size_t ascii_pull(void *,char **, size_t *, char **, size_t *);
 static size_t ascii_push(void *,char **, size_t *, char **, size_t *);
 static size_t  utf8_pull(void *,char **, size_t *, char **, size_t *);
 static size_t  utf8_push(void *,char **, size_t *, char **, size_t *);
+static size_t weird_pull(void *,char **, size_t *, char **, size_t *);
+static size_t weird_push(void *,char **, size_t *, char **, size_t *);
 static size_t ucs2hex_pull(void *,char **, size_t *, char **, size_t *);
 static size_t ucs2hex_push(void *,char **, size_t *, char **, size_t *);
 static size_t iconv_copy(void *,char **, size_t *, char **, size_t *);
@@ -33,6 +35,7 @@ struct charset_functions builtin_functions[] = {
 		{"UCS-2LE",  iconv_copy, iconv_copy},
 		{"UTF8",   utf8_pull,  utf8_push},
 		{"ASCII", ascii_pull, ascii_push},
+		{"WEIRD", weird_pull, weird_push},
 		{"UCS2-HEX", ucs2hex_pull, ucs2hex_push},
 		{NULL, NULL, NULL}
 };
@@ -381,6 +384,111 @@ static size_t ucs2hex_push(void *cd, char **inbuf, size_t *inbytesleft,
 }
 
 
+/* the "weird" character set is very useful for testing multi-byte
+   support and finding bugs. Don't use on a production system! 
+*/
+static struct {
+	char from;
+	char *to;
+	int len;
+} weird_table[] = {
+	{'q', "^q^", 3},
+	{'Q', "^Q^", 3},
+	{0, NULL}
+};
+
+static size_t weird_pull(void *cd, char **inbuf, size_t *inbytesleft,
+			 char **outbuf, size_t *outbytesleft)
+{
+	while (*inbytesleft >= 1 && *outbytesleft >= 2) {
+		int i;
+		int done = 0;
+		for (i=0;weird_table[i].from;i++) {
+			if (strncmp((*inbuf), 
+				    weird_table[i].to, 
+				    weird_table[i].len) == 0) {
+				if (*inbytesleft < weird_table[i].len) {
+					DEBUG(0,("ERROR: truncated weird string\n"));
+					/* smb_panic("weird_pull"); */
+
+				} else {
+					(*outbuf)[0] = weird_table[i].from;
+					(*outbuf)[1] = 0;
+					(*inbytesleft)  -= weird_table[i].len;
+					(*outbytesleft) -= 2;
+					(*inbuf)  += weird_table[i].len;
+					(*outbuf) += 2;
+					done = 1;
+					break;
+				}
+			}
+		}
+		if (done) continue;
+		(*outbuf)[0] = (*inbuf)[0];
+		(*outbuf)[1] = 0;
+		(*inbytesleft)  -= 1;
+		(*outbytesleft) -= 2;
+		(*inbuf)  += 1;
+		(*outbuf) += 2;
+	}
+
+	if (*inbytesleft > 0) {
+		errno = E2BIG;
+		return -1;
+	}
+	
+	return 0;
+}
+
+static size_t weird_push(void *cd, char **inbuf, size_t *inbytesleft,
+			 char **outbuf, size_t *outbytesleft)
+{
+	int ir_count=0;
+
+	while (*inbytesleft >= 2 && *outbytesleft >= 1) {
+		int i;
+		int done=0;
+		for (i=0;weird_table[i].from;i++) {
+			if ((*inbuf)[0] == weird_table[i].from &&
+			    (*inbuf)[1] == 0) {
+				if (*outbytesleft < weird_table[i].len) {
+					DEBUG(0,("No room for weird character\n"));
+					/* smb_panic("weird_push"); */
+				} else {
+					memcpy(*outbuf, weird_table[i].to, 
+					       weird_table[i].len);
+					(*inbytesleft)  -= 2;
+					(*outbytesleft) -= weird_table[i].len;
+					(*inbuf)  += 2;
+					(*outbuf) += weird_table[i].len;
+					done = 1;
+					break;
+				}
+			}
+		}
+		if (done) continue;
+
+		(*outbuf)[0] = (*inbuf)[0];
+		if ((*inbuf)[1]) ir_count++;
+		(*inbytesleft)  -= 2;
+		(*outbytesleft) -= 1;
+		(*inbuf)  += 2;
+		(*outbuf) += 1;
+	}
+
+	if (*inbytesleft == 1) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (*inbytesleft > 1) {
+		errno = E2BIG;
+		return -1;
+	}
+	
+	return ir_count;
+}
+
 static size_t iconv_copy(void *cd, char **inbuf, size_t *inbytesleft,
 			 char **outbuf, size_t *outbytesleft)
 {