X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/ad6f549910317aed78d06b5e5fa95d8db00b42e5..aaaa94ea8e4e7f53aec90ba28b3f7f26f28b317f:/src/src/parse.c

diff --git a/src/src/parse.c b/src/src/parse.c
index 9b7069f9e..1b44146c5 100644
--- a/src/src/parse.c
+++ b/src/src/parse.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2017 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* Functions for parsing addresses */
@@ -187,7 +187,7 @@ The start of the last potential comment position is remembered to
 make it possible to ignore comments at the end of compound items.
 
 Argument: current character pointer
-Regurns:  new character pointer
+Returns:  new character pointer
 */
 
 static uschar *
@@ -620,8 +620,8 @@ parse_extract_address(uschar *mailbox, uschar **errorptr, int *start, int *end,
 {
 uschar *yield = store_get(Ustrlen(mailbox) + 1);
 uschar *startptr, *endptr;
-uschar *s = (uschar *)mailbox;
-uschar *t = (uschar *)yield;
+uschar *s = US mailbox;
+uschar *t = US yield;
 
 *domain = 0;
 
@@ -661,7 +661,7 @@ if (*s != '@' && *s != '<')
   while (*s != '<' && (!parse_allow_group || *s != ':'))
     {
     s = read_local_part(s, t, errorptr, FALSE);
-    if (*errorptr != NULL)
+    if (*errorptr)
       {
       *errorptr = string_sprintf("%s (expected word or \"<\")", *errorptr);
       goto PARSE_FAILED;
@@ -686,8 +686,8 @@ processing it. Note that this is "if" rather than "else if" because it's also
 used after reading a preceding phrase.
 
 There are a lot of broken sendmails out there that put additional pairs of <>
-round <route-addr>s. If strip_excess_angle_brackets is set, allow any number of
-them, as long as they match. */
+round <route-addr>s.  If strip_excess_angle_brackets is set, allow a limited
+number of them, as long as they match. */
 
 if (*s == '<')
   {
@@ -696,8 +696,11 @@ if (*s == '<')
   int bracket_count = 1;
 
   s++;
-  if (strip_excess_angle_brackets)
-    while (*s == '<') { bracket_count++; s++; }
+  if (strip_excess_angle_brackets) while (*s == '<')
+   {
+   if(bracket_count++ > 5) FAILED(US"angle-brackets nested too deep");
+   s++;
+   }
 
   t = yield;
   startptr = s;
@@ -711,7 +714,7 @@ if (*s == '<')
   if (*s == '@')
     {
     s = read_route(s, t, errorptr);
-    if (*errorptr != NULL) goto PARSE_FAILED;
+    if (*errorptr) goto PARSE_FAILED;
     *t = 0;                  /* Ensure route is ignored - probably overkill */
     source_routed = TRUE;
     }
@@ -729,7 +732,7 @@ if (*s == '<')
   else
     {
     s = read_addr_spec(s, t, '>', errorptr, &domainptr);
-    if (*errorptr != NULL) goto PARSE_FAILED;
+    if (*errorptr) goto PARSE_FAILED;
     *domain = domainptr - yield;
     if (source_routed && *domain == 0)
       FAILED(US"domain missing in source-routed address");
@@ -739,9 +742,10 @@ if (*s == '<')
   if (*errorptr != NULL) goto PARSE_FAILED;
   while (bracket_count-- > 0) if (*s++ != '>')
     {
-    *errorptr = (s[-1] == 0)? US"'>' missing at end of address" :
-      string_sprintf("malformed address: %.32s may not follow %.*s",
-        s-1, s - (uschar *)mailbox - 1, mailbox);
+    *errorptr = s[-1] == 0
+      ? US"'>' missing at end of address"
+      : string_sprintf("malformed address: %.32s may not follow %.*s",
+	  s-1, (int)(s - US mailbox - 1), mailbox);
     goto PARSE_FAILED;
     }
 
@@ -794,13 +798,13 @@ if (*s != 0)
   else
     {
     *errorptr = string_sprintf("malformed address: %.32s may not follow %.*s",
-      s, s - (uschar *)mailbox, mailbox);
+      s, (int)(s - US mailbox), mailbox);
     goto PARSE_FAILED;
     }
   }
-*start = startptr - (uschar *)mailbox;      /* Return offsets */
+*start = startptr - US mailbox;      /* Return offsets */
 while (isspace(endptr[-1])) endptr--;
-*end = endptr - (uschar *)mailbox;
+*end = endptr - US mailbox;
 
 /* Although this code has no limitation on the length of address extracted,
 other parts of Exim may have limits, and in any case, RFC 2821 limits local
@@ -909,8 +913,7 @@ for (; len > 0; len--)
       }
     else
       {
-      sprintf(CS t, "=%02X", ch);
-      while (*t != 0) t++;
+      t += sprintf(CS t, "=%02X", ch);
       coded = TRUE;
       first_byte = !first_byte;
       }
@@ -1444,7 +1447,7 @@ for (;;)
       with a flag that fails symlinks. */
 
       {
-      int fd = open(directory, O_RDONLY);
+      int fd = open(CS directory, O_RDONLY);
       if (fd < 0)
 	{
 	*error = string_sprintf("failed to open directory %s", directory);
@@ -1460,7 +1463,7 @@ for (;;)
 	temp = *p;
 	*p = '\0';
 
-	fd2 = openat(fd, q, O_RDONLY|O_NOFOLLOW);
+	fd2 = openat(fd, CS q, O_RDONLY|O_NOFOLLOW);
 	close(fd);
 	*p = temp;
 	if (fd2 < 0)