From ff8bc3108abda5bcb07fb5417d8dac5bdbd39fa1 Mon Sep 17 00:00:00 2001
From: NotZed <NotZed@HelixCode.com>
Date: Wed, 3 May 2000 04:20:26 +0000
Subject: [PATCH] If the iconv handle is -1, then dont try and convert (crashes

2000-05-03  NotZed  <NotZed@HelixCode.com>

        * camel-mime-utils.c (rfc2047_decode_word): If the iconv handle is
        -1, then dont try and convert (crashes unicode_iconv?).
        (rfc2047_decode_word): Use alloca for variables instead of
        g_malloc - by the rfc they should always be short.
        (rfc2047_decode_word): If we can't do the charset conversion, undo
        the quoted-printable/base64 at least?  Should probably convert
        unknown characters to the utf-8 unknown character.

svn path=/trunk/; revision=2774
---
 camel/ChangeLog          | 10 ++++++++++
 camel/camel-mime-utils.c | 27 +++++++++++++++++----------
 2 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/camel/ChangeLog b/camel/ChangeLog
index d65d890542..d2aec28651 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,3 +1,13 @@
+2000-05-03  NotZed  <NotZed@HelixCode.com>
+
+	* camel-mime-utils.c (rfc2047_decode_word): If the iconv handle is
+	-1, then dont try and convert (crashes unicode_iconv?).
+	(rfc2047_decode_word): Use alloca for variables instead of
+	g_malloc - by the rfc they should always be short.
+	(rfc2047_decode_word): If we can't do the charset conversion, undo
+	the quoted-printable/base64 at least?  Should probably convert
+	unknown characters to the utf-8 unknown character.
+
 2000-05-02  Larry Ewing  <lewing@helixcode.com>
 
 	* camel-mime-utils.c (header_decode_date): fix typo when
diff --git a/camel/camel-mime-utils.c b/camel/camel-mime-utils.c
index 6c9645b6c8..3f4c4d99d3 100644
--- a/camel/camel-mime-utils.c
+++ b/camel/camel-mime-utils.c
@@ -680,9 +680,10 @@ rfc2047_decode_word(const char *in, int len)
 	if (inptr!=NULL
 	    && inptr<inend+2
 	    && inptr[2]=='?') {
+		d(printf("found ?, encoding is '%c'\n", inptr[0]));
 		inptr++;
 		tmplen = inend-inptr-2;
-		decword = g_malloc(tmplen); /* this will always be more-than-enough room */
+		decword = alloca(tmplen); /* this will always be more-than-enough room */
 		switch(toupper(inptr[0])) {
 		case 'Q':
 			inlen = quoted_decode(inptr+2, tmplen, decword);
@@ -695,6 +696,7 @@ rfc2047_decode_word(const char *in, int len)
 			break;
 		}
 		}
+		d(printf("The encoded length = %d\n", inlen));
 		if (inlen>0) {
 			/* yuck, all this snot is to setup iconv! */
 			tmplen = inptr-in-3;
@@ -705,21 +707,26 @@ rfc2047_decode_word(const char *in, int len)
 			inbuf = decword;
 
 			outlen = inlen*6;
-			outbase = g_malloc(outlen);
+			outbase = alloca(outlen);
 			outbuf = outbase;
 
+			/* TODO: Should this cache iconv converters? */
 			ic = unicode_iconv_open("utf-8", encname);
-			ret = unicode_iconv(ic, (const char **)&inbuf, &inlen, &outbuf, &outlen);
-			unicode_iconv_close(ic);
-			if (ret>=0) {
-				*outbuf = 0;
-				decoded = outbase;
-				outbase = NULL;
+			if (ic != (unicode_iconv_t)-1) {
+				ret = unicode_iconv(ic, (const char **)&inbuf, &inlen, &outbuf, &outlen);
+				unicode_iconv_close(ic);
+				if (ret>=0) {
+					*outbuf = 0;
+					decoded = g_strdup(outbase);
+				}
+			} else {
+				g_warning("Cannot decode charset, header display may be corrupt: %s: %s", encname, strerror(errno));
+				/* TODO: Should this do this, or just leave the encoded strings? */
+				decword[inlen] = 0;
+				decoded = g_strdup(decword);
 			}
 		}
 	}
-	free(outbase);
-	free(decword);
 
 	d(printf("decoded '%s'\n", decoded));