diff options
| -rw-r--r-- | mailutils/sendmail.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c index c426e9d85..4f73512e9 100644 --- a/mailutils/sendmail.c +++ b/mailutils/sendmail.c @@ -94,9 +94,22 @@ static char *sane_address(char *str) { char *s = str; char *p = s; + int leading_space = 1; + int trailing_space = 0; + while (*s) { - if (isalnum(*s) || '_' == *s || '-' == *s || '.' == *s || '@' == *s) { + if (isspace(*s)) { + trailing_space = !leading_space; + } else { *p++ = *s; + if ((!isalnum(*s) && !strchr("_-.@", *s)) || + trailing_space) { + *p = '\0'; + bb_error_msg("Bad address: %s", str); + *str = '\0'; + return str; + } + leading_space = 0; } s++; } @@ -106,6 +119,8 @@ static char *sane_address(char *str) static void rcptto(const char *s) { + if (!*s) + return; // N.B. we don't die if recipient is rejected, for the other recipients may be accepted if (250 != smtp_checkp("RCPT TO:<%s>", s, -1)) bb_error_msg("Bad recipient: <%s>", s); |