The decode_header() function tries to unwrap RFC2047-style quoted
strings but punts when it finds anything it cannot parse. Allow the
function to report if it punted to the caller, and use the resulting
string in the caller only when the function says it parsed the input
successfully.
Signed-off-by: Junio C Hamano <gits...@pobox.com>
---
builtin/mailinfo.c | 27 ++++++++++++++++-----------
1 file changed, 16 insertions(+), 11 deletions(-)
diff --git a/builtin/mailinfo.c b/builtin/mailinfo.c
index 4b9b1cc..6452a4c 100644
--- a/builtin/mailinfo.c
+++ b/builtin/mailinfo.c
@@ -293,7 +293,7 @@ static void cleanup_space(struct strbuf *sb)
}
}
-static void decode_header(struct mailinfo *mi, struct strbuf *line);
+static int decode_header(struct mailinfo *mi, struct strbuf *line);
static const char *header[MAX_HDR_PARSED] = {
"From","Subject","Date",
};
@@ -336,8 +336,8 @@ static int check_header(struct mailinfo *mi,
* normalize the meta information to utf8.
*/
strbuf_add(&sb, line->buf + len + 2, line->len - len -
2);
- decode_header(mi, &sb);
- handle_header(&hdr_data[i], &sb);
+ if (!decode_header(mi, &sb))
+ handle_header(&hdr_data[i], &sb);
ret = 1;
goto check_header_out;
}
@@ -347,25 +347,26 @@ static int check_header(struct mailinfo *mi,
if (cmp_header(line, "Content-Type")) {
len = strlen("Content-Type: ");
strbuf_add(&sb, line->buf + len, line->len - len);
- decode_header(mi, &sb);
- strbuf_insert(&sb, 0, "Content-Type: ", len);
- handle_content_type(mi, &sb);
+ if (!decode_header(mi, &sb)) {
+ strbuf_insert(&sb, 0, "Content-Type: ", len);
+ handle_content_type(mi, &sb);
+ }
ret = 1;
goto check_header_out;
}
if (cmp_header(line, "Content-Transfer-Encoding")) {
len = strlen("Content-Transfer-Encoding: ");
strbuf_add(&sb, line->buf + len, line->len - len);
- decode_header(mi, &sb);
- handle_content_transfer_encoding(mi, &sb);
+ if (!decode_header(mi, &sb))
+ handle_content_transfer_encoding(mi, &sb);
ret = 1;
goto check_header_out;
}
if (cmp_header(line, "Message-Id")) {
len = strlen("Message-Id: ");
strbuf_add(&sb, line->buf + len, line->len - len);
- decode_header(mi, &sb);
- handle_message_id(mi, &sb);
+ if (!decode_header(mi, &sb))
+ handle_message_id(mi, &sb);
ret = 1;
goto check_header_out;
}
@@ -537,11 +538,12 @@ static void convert_to_utf8(struct mailinfo *mi,
strbuf_attach(line, out, strlen(out), strlen(out));
}
-static void decode_header(struct mailinfo *mi, struct strbuf *it)
+static int decode_header(struct mailinfo *mi, struct strbuf *it)
{
char *in, *ep, *cp;
struct strbuf outbuf = STRBUF_INIT, *dec;
struct strbuf charset_q = STRBUF_INIT, piecebuf = STRBUF_INIT;
+ int found_error = -1; /* pessimism */
in = it->buf;
while (in - it->buf <= it->len && (ep = strstr(in, "=?")) != NULL) {
@@ -610,10 +612,13 @@ static void decode_header(struct mailinfo *mi, struct
strbuf *it)
strbuf_addstr(&outbuf, in);
strbuf_reset(it);
strbuf_addbuf(it, &outbuf);
+ found_error = 0;
release_return:
strbuf_release(&outbuf);
strbuf_release(&charset_q);
strbuf_release(&piecebuf);
+
+ return found_error;
}
static void decode_transfer_encoding(struct mailinfo *mi, struct strbuf *line)
--
2.6.1-320-g86a1181
--
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