--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dcclib/parse_word.c	Tue Mar 10 13:49:58 2009 +0100
@@ -0,0 +1,167 @@
+/* Distributed Checksum Clearinghouse
+ *
+ * Copyright (c) 2008 by Rhyolite Software, LLC
+ *
+ * This agreement is not applicable to any entity which sells anti-spam
+ * solutions to others or provides an anti-spam solution as part of a
+ * security solution sold to other entities, or to a private network
+ * which employs the DCC or uses data provided by operation of the DCC
+ * but does not provide corresponding data to other users.
+ *
+ * Permission to use, copy, modify, and distribute this software without
+ * changes for any purpose with or without fee is hereby granted, provided
+ * that the above copyright notice and this permission notice appear in all
+ * copies and any distributed versions or copies are either unchanged
+ * or not called anything similar to "DCC" or "Distributed Checksum
+ * Clearinghouse".
+ *
+ * Parties not eligible to receive a license under this agreement can
+ * obtain a commercial license to use DCC by contacting Rhyolite Software
+ * at sales@rhyolite.com.
+ *
+ * A commercial license would be for Distributed Checksum and Reputation
+ * Clearinghouse software.  That software includes additional features.  This
+ * free license for Distributed ChecksumClearinghouse Software does not in any
+ * way grant permision to use Distributed Checksum and Reputation Clearinghouse
+ * software
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE, LLC DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE, LLC
+ * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Rhyolite Software DCC 1.3.103-1.24 $Revision$
+ */
+
+#include "dcc_defs.h"
+
+
+/* Get a "word" ended by whitespace, while honoring backslashes
+ *	on exit the remainder of the line is trimmed of leading whitespace */
+const char *				/* 0 or remainder of line */
+dcc_parse_word(DCC_EMSG emsg,
+	       char *tgt,		/* copy word to here if not null */
+	       int tgt_len,		/* includes trailing '\0' */
+	       const char *line,	/* line of words */
+	       const char *fieldname,
+	       const char *fnm, int lno)
+{
+	DCC_FNM_LNO_BUF fnm_buf;
+	const char *p;
+	char c;
+
+	if (!tgt_len && tgt)
+		dcc_logbad(EX_SOFTWARE, "bad tgt_len for dcc_get_word(%s)%s",
+			   fieldname, fnm_lno(&fnm_buf, fnm, lno));
+
+	if (!line) {
+		if (tgt)
+			*tgt = '\0';
+		if (fieldname)
+			dcc_pemsg(EX_USAGE, emsg, "%s missing%s",
+				  fieldname, fnm_lno(&fnm_buf, fnm, lno));
+		return 0;
+	}
+
+	line = line+strspn(line, DCC_WHITESPACE);   /* skip leading blanks */
+
+	p = line;
+	do {
+		c = *p;
+
+		if (c != '\0') {
+			++p;
+			if (c == '\\' && *p != '\0') {
+				/* recognize and convert escape sequences to
+				 * their real equivalents */
+				if ((c = *p++) == 'n') {
+					c = '\n';
+				} else if (c == 'r') {
+					c = '\r';
+				} else if (c == 't') {
+					c = '\t';
+				} else if (c == 'b') {
+					c = '\b';
+				} else if (c >= '0' && c <= '7') {
+					c -= '0';
+					if (*p >= '0' && *p <= '7') {
+					    c = (c<<3)+(*p++ - '0');
+					    if (*p >= '0' && *p <= '7')
+						c = (c<<3)+(*p++ - '0');
+					}
+				}
+			} else if (strchr(DCC_WHITESPACE, c)) {
+				/* Stop on the first whitespace or delimiter */
+				c = '\0';
+				/* Skip trailing whitespace */
+				p += strspn(p, DCC_WHITESPACE);
+			}
+		}
+
+		if (tgt) {
+			if (!tgt_len) {
+				if (fieldname)
+					dcc_pemsg(EX_USAGE, emsg,
+						  "%s \"%.*s...\" too long%s",
+						  fieldname,
+						  min(16, (int)(p-line)), line,
+						  fnm_lno(&fnm_buf, fnm, lno));
+				return 0;
+			}
+			*tgt++ = c;
+			--tgt_len;
+		}
+	} while (c != '\0');
+
+	return p;
+}
+
+
+
+/* get a password */
+const char *				/* 0 or remainder of line */
+parse_passwd(DCC_EMSG emsg,
+	     DCC_PASSWD passwd,		/* copy password here */
+	     const char *line,		/* line of words */
+	     const char *fieldname,
+	     const char *fnm, int lno)
+{
+	char buf[sizeof(DCC_PASSWD)+1];
+	const char *result;
+
+	memset(buf, 0, sizeof(buf));
+	result = dcc_parse_word(emsg, buf, sizeof(buf),
+				line, fieldname, fnm, lno);
+	if (result)
+		memcpy(passwd, buf, sizeof(DCC_PASSWD));
+	else
+		memset(passwd, 0, sizeof(DCC_PASSWD));
+	return result;
+}
+
+
+
+/* see if a string starts with a word possibly followed by a comma */
+u_char					/* 1=yes */
+dcc_ck_word_comma(const char **parg, const char *word)
+{
+	u_int word_len = strlen(word);
+	const char *arg = *parg;
+
+	if (strncasecmp(arg, word, word_len))
+		return 0;
+	arg += word_len;
+	if (*arg == '\0') {
+		*parg = arg;
+		return 1;
+	}
+	if (*arg == ',') {
+		*parg = arg+1;
+		return 1;
+	}
+	return 0;
+}