Support long header fields in To:, Cc: and Bcc: headers.
Signed-off-by: Aaro Koskinen <[email protected]>
---
mailutils/sendmail.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c
index 12ca054..9c1c589 100644
--- a/mailutils/sendmail.c
+++ b/mailutils/sendmail.c
@@ -181,6 +181,12 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
char *host = sane_address(safe_gethostname());
unsigned nheaders = 0;
int code;
+ enum {
+ HDR_OTHER = 0,
+ HDR_TOCC,
+ HDR_BCC,
+ } last_hdr = 0;
+ int check_hdr;
enum {
//--- standard options
@@ -345,20 +351,31 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
if (opts & OPT_t) {
if (0 == strncasecmp("To:", s, 3) || 0 ==
strncasecmp("Bcc:" + 1, s, 3)) {
rcptto_list(s+3);
+ last_hdr = HDR_TOCC;
goto addheader;
}
// Bcc: header adds blind copy (hidden) recipient
if (0 == strncasecmp("Bcc:", s, 4)) {
rcptto_list(s+4);
free(s);
+ last_hdr = HDR_BCC;
continue; // N.B. Bcc: vanishes from headers!
}
}
- if (strchr(s, ':') || (list && isspace(s[0]))) {
+ check_hdr = list && isspace(s[0]);
+ if (strchr(s, ':') || check_hdr) {
// other headers go verbatim
// N.B. RFC2822 2.2.3 "Long Header Fields" allows for
headers to occupy several lines.
// Continuation is denoted by prefixing additional
lines with whitespace(s).
// Thanks (stefan.seyfried at googlemail.com) for
pointing this out.
+ if (check_hdr && last_hdr != HDR_OTHER) {
+ rcptto_list(s+1);
+ if (last_hdr == HDR_BCC)
+ continue;
+ // N.B. Bcc: vanishes from headers!
+ } else {
+ last_hdr = HDR_OTHER;
+ }
addheader:
// N.B. we allow MAX_HEADERS generic headers at most to
prevent attacks
if (MAX_HEADERS && ++nheaders >= MAX_HEADERS)
--
1.7.10.4
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