From 7b4682fe054f605f05e6d38033188b5961aac096 Mon Sep 17 00:00:00 2001
From: markus schnalke <meillo@marmaro.de>
Date: Wed, 11 Apr 2012 11:07:59 +0200
Subject: [PATCH] show: Fixed -checkmime for msgs. Only check for MIME-Version
 header from now on.

---
 uip/show.c |  180 ++++++++----------------------------------------------------
 1 file changed, 22 insertions(+), 158 deletions(-)

diff --git a/uip/show.c b/uip/show.c
index a0178fe..34fa826 100644
--- a/uip/show.c
+++ b/uip/show.c
@@ -37,7 +37,7 @@ static struct swit switches[] = {
 /*
 ** static prototypes
 */
-static int is_nontext(char *);
+static int is_mime(char *);
 
 #define SHOW  0
 #define NEXT  1
@@ -228,22 +228,22 @@ go_to_it: ;
 	/* check if any messages are non-text MIME messages */
 	if (checkmime) {
 		if (file) {
-			/* check the file for MIME */
-			if (is_nontext(vec[vecp - 1])) {
+			if (is_mime(vec[vecp - 1])) {
 				mime = 1;
 			}
 		} else {
-			/*
-			** loop through selected messages
-			** and check for MIME
-			*/
 			for (msgnum = mp->lowsel; msgnum <= mp->hghsel;
-					msgnum++)
-				if (is_selected(mp, msgnum) &&
-						is_nontext(m_name(msgnum))) {
+					msgnum++) {
+				if (!is_selected(mp, msgnum)) {
+					continue;
+				}
+				snprintf(buf, sizeof buf, "%s/%d",
+						toabsdir(folder), msgnum);
+				if (is_mime(buf)) {
 					mime = 1;
 					break;
 				}
+			}
 		}
 	}
 
@@ -279,174 +279,38 @@ go_to_it: ;
 }
 
 /*
-** Check if a message or file contains any non-text parts
+** Check if a message or file contains MIME.
 */
 static int
-is_nontext(char *msgnam)
+is_mime(char *msgnam)
 {
-	int result, state;
-	unsigned char *bp, *dp;
-	char *cp;
+	int state = FLD;
 	char buf[BUFSIZ], name[NAMESZ];
 	FILE *fp;
 
 	if ((fp = fopen(msgnam, "r")) == NULL)
 		return 0;
 
-	for (state = FLD;;) {
+	while (1) {
 		switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
 		case FLD:
 		case FLDPLUS:
 		case FLDEOF:
-			/*
-			** Check Content-Type field
-			*/
-			if (!mh_strcasecmp(name, TYPE_FIELD)) {
-				int passno = 1;
-				char c;
-
-				cp = getcpy(buf);
-				while (state == FLDPLUS) {
-					state = m_getfld(state, name, buf,
-							sizeof(buf), fp);
-					cp = add(buf, cp);
-				}
-				bp = cp;
-
-again:
-				for (; isspace(*bp); bp++)
-					continue;
-				if (*bp == '(') {
-					int i;
-
-					for (bp++, i = 0;;) {
-						switch (*bp++) {
-						case '\0':
-invalid:
-							result = 0;
-							goto out;
-						case '\\':
-							if (*bp++ == '\0')
-								goto invalid;
-							continue;
-						case '(':
-							i++;
-							/* and fall... */
-						default:
-							continue;
-						case ')':
-							if (--i < 0)
-								break;
-							continue;
-						}
-						break;
-					}
-				}
-				if (passno == 2) {
-					if (*bp != '/')
-						goto invalid;
-					bp++;
-					passno = 3;
-					goto again;
-				}
-				for (dp = bp; istoken(*dp); dp++)
-					continue;
-				c = *dp;
-				*dp = '\0';
-				if (!*bp)
-					goto invalid;
-				if (passno == 1) {
-					if (!(result = (mh_strcasecmp(bp, "text") != 0))) {
-						*dp = c;
-						bp = dp;
-						passno = 2;
-						goto again;
-					}
-				} else {
-					if ((result = (mh_strcasecmp(bp,
-							"plain") != 0)))
-						goto out;
-					*dp = c;
-					for (dp++; isspace(*dp); dp++)
-						continue;
-					if (*dp) {
-						if ((result = !uprf(dp,
-								"charset")))
-							goto out;
-						dp += sizeof("charset") - 1;
-						while (isspace(*dp))
-							dp++;
-						if (*dp++ != '=')
-							goto invalid;
-						while (isspace(*dp))
-							dp++;
-						if (*dp == '"') {
-							if ((bp = strchr(++dp, '"')))
-								*bp = '\0';
-						} else {
-							for (bp = dp; *bp; bp++)
-								if (!istoken(*bp)) {
-									*bp = '\0';
-									break;
-								}
-						}
-					} else {
-						/* Default character set */
-						dp = "US-ASCII";
-					}
-					/* Check the character set */
-					result = !check_charset(dp, strlen(dp));
-				}
-out:
-				free(cp);
-				if (result) {
-					fclose(fp);
-					return result;
-				}
-				break;
+			/* Does it have a Mime-Version header? */
+			if (mh_strcasecmp(name, VRSN_FIELD)==0) {
+				fclose(fp);
+				return 1;
 			}
 
-			/*
-			** Check Content-Transfer-Encoding field
-			*/
-			if (!mh_strcasecmp(name, ENCODING_FIELD)) {
-				cp = getcpy(buf);
-				while (state == FLDPLUS) {
-					state = m_getfld(state, name, buf,
-							sizeof(buf), fp);
-					cp = add(buf, cp);
-				}
-				for (bp = cp; isspace(*bp); bp++)
-					continue;
-				for (dp = bp; istoken(*dp); dp++)
-					continue;
-				*dp = '\0';
-				result = (mh_strcasecmp(bp, "7bit")
-					   && mh_strcasecmp(bp, "8bit")
-					   && mh_strcasecmp(bp, "binary"));
-
-				free(cp);
-				if (result) {
-					fclose(fp);
-					return result;
-				}
-				break;
-			}
-
-			/*
-			** Just skip the rest of this header
-			** field and go to next one.
-			*/
-			while (state == FLDPLUS)
+			/* else skip the rest of this header field and go on */
+			while (state == FLDPLUS) {
 				state = m_getfld(state, name, buf, sizeof(buf),
 						fp);
+			}
 			break;
 
-			/*
-			** We've passed the message header,
-			** so message is just text.
-			*/
 		default:
+			/* We've passed the header, so message is just text */
 			fclose(fp);
 			return 0;
 		}
-- 
1.7.10.4