X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/de4636bb664106d9932ae7acb517e471b848f1f3..fc8a48c33835906623cb10ee129fc70a72271e02:/uip/show.c

diff --git a/uip/show.c b/uip/show.c
index 229e6edd..f513ebd5 100644
--- a/uip/show.c
+++ b/uip/show.c
@@ -332,19 +332,19 @@ static int
 is_nontext (char *msgnam)
 {
     int	result, state;
-    unsigned char *bp, *dp;
-    char *cp;
+    char *bp, *dp, *cp;
     char buf[BUFSIZ], name[NAMESZ];
     FILE *fp;
+    m_getfld_state_t gstate = 0;
 
     if ((fp = fopen (msgnam, "r")) == NULL)
 	return 0;
 
-    for (state = FLD;;) {
-	switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
+    for (;;) {
+	int bufsz = sizeof buf;
+	switch (state = m_getfld (&gstate, name, buf, &bufsz, fp)) {
 	case FLD:
 	case FLDPLUS:
-	case FLDEOF:
 	    /*
 	     * Check Content-Type field
 	     */
@@ -354,14 +354,15 @@ is_nontext (char *msgnam)
 
 		cp = add (buf, NULL);
 		while (state == FLDPLUS) {
-		    state = m_getfld (state, name, buf, sizeof(buf), fp);
+		    bufsz = sizeof buf;
+		    state = m_getfld (&gstate, name, buf, &bufsz, fp);
 		    cp = add (buf, cp);
 		}
 		bp = cp;
 		passno = 1;
 
 again:
-		for (; isspace (*bp); bp++)
+		for (; isspace ((unsigned char) *bp); bp++)
 		    continue;
 		if (*bp == '(') {
 		    int i;
@@ -406,17 +407,17 @@ invalid:
 		    if ((result = (mh_strcasecmp (bp, "plain") != 0)))
 			goto out;
 		    *dp = c;
-		    for (dp++; isspace (*dp); dp++)
+		    for (dp++; isspace ((unsigned char) *dp); dp++)
 			continue;
 		    if (*dp) {
 			if ((result = !uprf (dp, "charset")))
 			    goto out;
 			dp += sizeof("charset") - 1;
-			while (isspace (*dp))
+			while (isspace ((unsigned char) *dp))
 			    dp++;
 			if (*dp++ != '=')
 			    goto invalid;
-			while (isspace (*dp))
+			while (isspace ((unsigned char) *dp))
 			    dp++;
 			if (*dp == '"') {
 			    if ((bp = strchr(++dp, '"')))
@@ -446,6 +447,7 @@ out:
 		free (cp);
 		if (result) {
 		    fclose (fp);
+		    m_getfld_state_destroy (&gstate);
 		    return result;
 		}
 		break;
@@ -457,12 +459,13 @@ out:
 	    if (!mh_strcasecmp (name, ENCODING_FIELD)) {
 		cp = add (buf, NULL);
 		while (state == FLDPLUS) {
-		    state = m_getfld (state, name, buf, sizeof(buf), fp);
+		    bufsz = sizeof buf;
+		    state = m_getfld (&gstate, name, buf, &bufsz, fp);
 		    cp = add (buf, cp);
 		}
-		for (bp = cp; isspace (*bp); bp++)
+		for (bp = cp; isspace ((unsigned char) *bp); bp++)
 		    continue;
-		for (dp = bp; istoken (*dp); dp++)
+		for (dp = bp; istoken ((unsigned char) *dp); dp++)
 		    continue;
 		*dp = '\0';
 		result = (mh_strcasecmp (bp, "7bit")
@@ -472,6 +475,7 @@ out:
 		free (cp);
 		if (result) {
 		    fclose (fp);
+		    m_getfld_state_destroy (&gstate);
 		    return result;
 		}
 		break;
@@ -481,8 +485,10 @@ out:
 	     * Just skip the rest of this header
 	     * field and go to next one.
 	     */
-	    while (state == FLDPLUS)
-		state = m_getfld (state, name, buf, sizeof(buf), fp);
+	    while (state == FLDPLUS) {
+		bufsz = sizeof buf;
+		state = m_getfld (&gstate, name, buf, &bufsz, fp);
+	    }
 	    break;
 
 	    /*
@@ -491,6 +497,7 @@ out:
 	     */
 	default:
 	    fclose (fp);
+	    m_getfld_state_destroy (&gstate);
 	    return 0;
 	}
     }