From: markus schnalke <meillo@marmaro.de>
Date: Thu, 12 Nov 2015 16:03:36 +0000 (+0100)
Subject: m_getfld2: Return line for LENERR2, plus some documentation
X-Git-Tag: mmh-0.3~39^2~15
X-Git-Url: http://git.marmaro.de/?p=mmh;a=commitdiff_plain;h=c4de1023b3141b9a89038012b246fa74205752cd

m_getfld2: Return line for LENERR2, plus some documentation
---

diff --git a/sbr/m_getfld2.c b/sbr/m_getfld2.c
index 5920425..6d96bdd 100644
--- a/sbr/m_getfld2.c
+++ b/sbr/m_getfld2.c
@@ -26,8 +26,18 @@ static size_t copyname(char *, char *);
 
 
 /*
-** For the states FLD2, BODY2 and FMTERR2 memory is allocated for f->value.
-** For the states LENERR2, IOERR2 and FILEEOF2 no memory is allocated.
+** FLD2:	We read a (complete) header field
+** BODY2:	We read a body line
+** LENERR2:	Line is too long (>998, as defined by RFC 822)
+** FMTERR2:	Header field invalid
+** IOERR2:	Failure to read
+** FILEEOF2:	We're at the end of the file
+**
+** f->name is only filled in FLD2.
+**
+** In FLD2, f->value contains the field's (complete) value only;
+** in BODY2, LENERR2 and FMTERR2 f->value contains the whole line;
+** in IOERR2 and FILEEOF2 f->value is not set.
 */
 enum state
 m_getfld2(enum state s, struct field *f, FILE *msg)
@@ -46,14 +56,18 @@ m_getfld2(enum state s, struct field *f, FILE *msg)
 		}
 	}
 
+	*f->name = '\0';
+	f->namelen = 0;
+
 	if (nchars >= NAMESZ) {
-		free(tmpline);
+		if (f->value) {
+			free(f->value);
+		}
+		f->value = tmpline;
+		f->valuelen = nchars;
 		return LENERR2;
 	}
 
-	*f->name = '\0';
-	f->namelen = 0;
-
 	switch (s) {
 	case FLD2:
 		if (*(tmpline + nchars - 1) != '\n') {
@@ -99,7 +113,11 @@ m_getfld2(enum state s, struct field *f, FILE *msg)
 			}
 
 			if (nchars >= NAMESZ) {
-				free(tmpline);
+				if (f->value) {
+					free(f->value);
+				}
+				f->value = tmpline;
+				f->valuelen = nchars;
 				return LENERR2;
 			}