sendmail: code shrink on top of previous patches

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c
index d58f503a0a9632967cd42bce51c9ffa1292529d1..b5aa1d17bc1d159b8500f9119396dad626cbcc60 100644 (file)
--- a/mailutils/sendmail.c
+++ b/mailutils/sendmail.c
@@ -92,47 +92,37 @@ static int smtp_check(const char *fmt, int code)
 // strip argument of bad chars
 static char *sane_address(char *str)
 {
-       char *s = str;
-       char *p = s;
-       int leading_space = 1;
-       int trailing_space = 0;
+       char *s;
 
+       trim(str);
+       s = str;
        while (*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;
+               if (!isalnum(*s) && !strchr("_-.@", *s)) {
+                       bb_error_msg("bad address '%s'", str);
+                       /* returning "": */
+                       str[0] = '\0';
+                       return str;
                }
                s++;
        }
-       *p = '\0';
        return str;
 }
 
 // check for an address inside angle brackets, if not found fall back to normal
 static char *angle_address(char *str)
 {
-       char *s = str;
-       char *e = str + strlen(str);
-
-       while (e != str && (isspace(*e) || *e == '\0'))
-               e--;
-       if (*e != '>')
-               goto done;
-       *e = '\0';
-       e = strrchr(s, '<');
-       if (e != NULL)
-               s = e + 1;
-done:
-       return sane_address(s);
+       char *s, *e;
+
+       trim(str);
+       e = last_char_is(str, '>');
+       if (e) {
+               s = strrchr(str, '<');
+               if (s) {
+                       *e = '\0';
+                       str = s + 1;
+               }
+       }
+       return sane_address(str);
 }
 
 static void rcptto(const char *s)
@@ -145,29 +135,27 @@ static void rcptto(const char *s)
 }
 
 // send to a list of comma separated addresses
-static void rcptto_list(const char *_str)
+static void rcptto_list(const char *list)
 {
-       char *str = xstrdup(_str);
-       int len = strlen(str);
-       int in_quote = 0;
+       char *str = xstrdup(list);
        char *s = str;
        char prev = 0;
-       int pos;
+       int in_quote = 0;
 
-       for (pos = 0; pos < len; pos++) {
-               char ch = str[pos];
+       while (*s) {
+               char ch = *s++;
 
                if (ch == '"' && prev != '\\') {
                        in_quote = !in_quote;
                } else if (!in_quote && ch == ',') {
-                       str[pos] = '\0';
-                       rcptto(angle_address(s));
-                       s = str + pos + 1;
+                       s[-1] = '\0';
+                       rcptto(angle_address(str));
+                       str = s;
                }
                prev = ch;
        }
        if (prev != ',')
-               rcptto(angle_address(s));
+               rcptto(angle_address(str));
        free(str);
 }
 
@@ -349,7 +337,7 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
 
                // analyze headers
                // To: or Cc: headers add recipients
-               check_hdr = 0 == strncasecmp("To:", s, 3);
+               check_hdr = (0 == strncasecmp("To:", s, 3));
                has_to |= check_hdr;
                if (opts & OPT_t) {
                        if (check_hdr || 0 == strncasecmp("Bcc:" + 1, s, 3)) {