1121b4e56
Denys Vlasenko
2017-10-05
Subject
sendmail allow "=" symbol in recipient, closes 10241
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mailutils/sendmail.c+7 -1
| @@ -150,7 +150,13 @@ static char *sane_address(char *str) | |
| trim(str); | |
| s = str; | |
| while (*s) { | |
| - | if (!isalnum(*s) && !strchr("+_-.@", *s)) { |
| + | /* Standard allows these chars in username without quoting: |
| + | * /!#$%&'*+-=?^_`{|}~ |
| + | * and allows dot (.) with some restrictions. |
| + | * I chose to only allow a saner subset. |
| + | * I propose to expand it only on user's request. |
| + | */ |
| + | if (!isalnum(*s) && !strchr("=+_-.@", *s)) { |
| bb_error_msg("bad address '%s'", str); | |
| /* returning "": */ | |
| str[0] = '\0'; | |