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authorJunio C Hamano <gitster@pobox.com>2008-05-25 01:16:05 -0700
committerJunio C Hamano <gitster@pobox.com>2008-05-25 13:22:18 -0700
commit9aa23094c281d1333eecb6bb1bd84b1599197d68 (patch)
tree1964fe1a280980a19d02f13f9457b7e60f3535df /builtin-mailinfo.c
parentcce8d6fdb4d7170a73763586daf6ac4f6b8fce2c (diff)
downloadgit-9aa23094c281d1333eecb6bb1bd84b1599197d68.tar.gz
mailinfo: apply the same fix not to lose NULs in BASE64 and QP codepaths
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-mailinfo.c')
-rw-r--r--builtin-mailinfo.c46
1 files changed, 25 insertions, 21 deletions
diff --git a/builtin-mailinfo.c b/builtin-mailinfo.c
index f0c420976f..e1e094f29e 100644
--- a/builtin-mailinfo.c
+++ b/builtin-mailinfo.c
@@ -434,6 +434,7 @@ static int read_one_header_line(char *line, int sz, FILE *in)
static int decode_q_segment(char *in, char *ot, unsigned otsize, char *ep, int rfc2047)
{
+ char *otbegin = ot;
char *otend = ot + otsize;
int c;
while ((c = *in++) != 0 && (in <= ep)) {
@@ -453,13 +454,14 @@ static int decode_q_segment(char *in, char *ot, unsigned otsize, char *ep, int r
*ot++ = c;
}
*ot = 0;
- return 0;
+ return (ot - otbegin);
}
static int decode_b_segment(char *in, char *ot, unsigned otsize, char *ep)
{
/* Decode in..ep, possibly in-place to ot */
int c, pos = 0, acc = 0;
+ char *otbegin = ot;
char *otend = ot + otsize;
while ((c = *in++) != 0 && (in <= ep)) {
@@ -505,7 +507,7 @@ static int decode_b_segment(char *in, char *ot, unsigned otsize, char *ep)
}
}
*ot = 0;
- return 0;
+ return (ot - otbegin);
}
/*
@@ -623,21 +625,20 @@ static void decode_header(char *it, unsigned itsize)
convert_to_utf8(it, itsize, "");
}
-static void decode_transfer_encoding(char *line, unsigned linesize)
+static int decode_transfer_encoding(char *line, unsigned linesize, int inputlen)
{
char *ep;
switch (transfer_encoding) {
case TE_QP:
- ep = line + strlen(line);
- decode_q_segment(line, line, linesize, ep, 0);
- break;
+ ep = line + inputlen;
+ return decode_q_segment(line, line, linesize, ep, 0);
case TE_BASE64:
- ep = line + strlen(line);
- decode_b_segment(line, line, linesize, ep);
- break;
+ ep = line + inputlen;
+ return decode_b_segment(line, line, linesize, ep);
case TE_DONTCARE:
- break;
+ default:
+ return inputlen;
}
}
@@ -806,17 +807,19 @@ static void handle_body(void)
/* process any boundary lines */
if (content_top->boundary && is_multipart_boundary(line)) {
/* flush any leftover */
- if ((transfer_encoding == TE_BASE64) &&
- (np != newline)) {
+ if (np != newline)
handle_filter(newline, sizeof(newline),
- strlen(newline));
- }
+ np - newline);
if (!handle_boundary())
return;
}
/* Unwrap transfer encoding */
- decode_transfer_encoding(line, sizeof(line));
+ len = decode_transfer_encoding(line, sizeof(line), len);
+ if (len < 0) {
+ error("Malformed input line");
+ return;
+ }
switch (transfer_encoding) {
case TE_BASE64:
@@ -830,13 +833,13 @@ static void handle_body(void)
break;
}
- /* this is a decoded line that may contain
+ /*
+ * This is a decoded line that may contain
* multiple new lines. Pass only one chunk
* at a time to handle_filter()
*/
-
do {
- while (*op != '\n' && *op != 0)
+ while (op < line + len && *op != '\n')
*np++ = *op++;
*np = *op;
if (*np != 0) {
@@ -846,9 +849,10 @@ static void handle_body(void)
rc = handle_filter(newline, sizeof(newline), np - newline);
np = newline;
}
- } while (*op != 0);
- /* the partial chunk is saved in newline and
- * will be appended by the next iteration of fgets
+ } while (op < line + len);
+ /*
+ * The partial chunk is saved in newline and will be
+ * appended by the next iteration of read_line_with_nul().
*/
break;
}