-/* $Cambridge: exim/src/src/expand.c,v 1.64 2006/10/09 14:36:25 ph10 Exp $ */
+/* $Cambridge: exim/src/src/expand.c,v 1.70 2006/11/13 12:07:46 ph10 Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
{ "rcpt_fail_count", vtype_int, &rcpt_fail_count },
{ "received_count", vtype_int, &received_count },
{ "received_for", vtype_stringptr, &received_for },
+ { "received_ip_address", vtype_stringptr, &interface_address },
+ { "received_port", vtype_int, &interface_port },
{ "received_protocol", vtype_stringptr, &received_protocol },
{ "received_time", vtype_int, &received_time },
{ "recipient_data", vtype_stringptr, &recipient_data },
while (isspace(*t)) t++; /* remove leading white space */
ilen = h->slen - (t - h->text); /* length to insert */
+ /* Unless wanted raw, remove trailing whitespace, including the
+ newline. */
+
+ if (!want_raw)
+ while (ilen > 0 && isspace(t[ilen-1])) ilen--;
+
/* Set comma = 1 if handling a single header and it's one of those
that contains an address list, except when asked for raw headers. Only
need to do this once. */
/* First pass - compute total store needed; second pass - compute
total store used, including this header. */
- size += ilen + comma;
+ size += ilen + comma + 1; /* +1 for the newline */
/* Second pass - concatentate the data, up to a maximum. Note that
the loop stops when size hits the limit. */
{
if (size > header_insert_maxlen)
{
- ilen -= size - header_insert_maxlen;
+ ilen -= size - header_insert_maxlen - 1;
comma = 0;
}
Ustrncpy(ptr, t, ilen);
ptr += ilen;
- if (comma != 0 && ilen > 0)
+
+ /* For a non-raw header, put in the comma if needed, then add
+ back the newline we removed above, provided there was some text in
+ the header. */
+
+ if (!want_raw && ilen > 0)
{
- ptr[-1] = ',';
+ if (comma != 0) *ptr++ = ',';
*ptr++ = '\n';
}
}
}
}
- /* At end of first pass, truncate size if necessary, and get the buffer
- to hold the data, returning the buffer size. */
+ /* At end of first pass, return NULL if no header found. Then truncate size
+ if necessary, and get the buffer to hold the data, returning the buffer size.
+ */
if (i == 0)
{
}
}
-/* Remove a redundant added comma if present */
-
-if (comma != 0 && ptr > yield) ptr -= 2;
-
/* That's all we do for raw header expansion. */
if (want_raw)
*ptr = 0;
}
-/* Otherwise, we remove trailing whitespace, including newlines. Then we do RFC
-2047 decoding, translating the charset if requested. The rfc2047_decode2()
+/* Otherwise, remove a final newline and a redundant added comma. Then we do
+RFC 2047 decoding, translating the charset if requested. The rfc2047_decode2()
function can return an error with decoded data if the charset translation
fails. If decoding fails, it returns NULL. */
else
{
uschar *decoded, *error;
- while (ptr > yield && isspace(ptr[-1])) ptr--;
+ if (ptr > yield && ptr[-1] == '\n') ptr--;
+ if (ptr > yield && comma != 0 && ptr[-1] == ',') ptr--;
*ptr = 0;
decoded = rfc2047_decode2(yield, check_rfc2047_length, charset, '?', NULL,
newsize, &error);
s = read_name(name, 256, s+1, US"_");
- /* Test for a header's existence */
+ /* Test for a header's existence. If the name contains a closing brace
+ character, this may be a user error where the terminating colon has been
+ omitted. Set a flag to adjust a subsequent error message in this case. */
if (Ustrncmp(name, "h_", 2) == 0 ||
Ustrncmp(name, "rh_", 3) == 0 ||
Ustrncmp(name, "bheader_", 8) == 0)
{
s = read_header_name(name, 256, s);
+ if (Ustrchr(name, '}') != NULL) malformed_header = TRUE;
if (yield != NULL) *yield =
(find_header(name, TRUE, NULL, FALSE, NULL) != NULL) == testfor;
}
* Evaluate numeric expression *
*************************************************/
-/* This is a set of mutually recursive functions that evaluate a simple
-arithmetic expression involving only + - * / and parentheses. The only one that
-is called from elsewhere is eval_expr, whose interface is:
+/* This is a set of mutually recursive functions that evaluate an arithmetic
+expression involving + - * / % & | ^ ~ << >> and parentheses. The only one of
+these functions that is called from elsewhere is eval_expr, whose interface is:
Arguments:
- sptr pointer to the pointer to the string - gets updated
- decimal TRUE if numbers are to be assumed decimal
- error pointer to where to put an error message - must be NULL on input
- endket TRUE if ')' must terminate - FALSE for external call
+ sptr pointer to the pointer to the string - gets updated
+ decimal TRUE if numbers are to be assumed decimal
+ error pointer to where to put an error message - must be NULL on input
+ endket TRUE if ')' must terminate - FALSE for external call
-
-Returns: on success: the value of the expression, with *error still NULL
- on failure: an undefined value, with *error = a message
+Returns: on success: the value of the expression, with *error still NULL
+ on failure: an undefined value, with *error = a message
*/
-static int eval_sumterm(uschar **, BOOL, uschar **);
+static int eval_op_or(uschar **, BOOL, uschar **);
+
static int
eval_expr(uschar **sptr, BOOL decimal, uschar **error, BOOL endket)
{
uschar *s = *sptr;
-int x = eval_sumterm(&s, decimal, error);
+int x = eval_op_or(&s, decimal, error);
if (*error == NULL)
{
- while (*s == '+' || *s == '-')
- {
- int op = *s++;
- int y = eval_sumterm(&s, decimal, error);
- if (*error != NULL) break;
- if (op == '+') x += y; else x -= y;
- }
- if (*error == NULL)
+ if (endket)
{
- if (endket)
- {
- if (*s != ')')
- *error = US"expecting closing parenthesis";
- else
- while (isspace(*(++s)));
- }
- else if (*s != 0) *error = US"expecting + or -";
+ if (*s != ')')
+ *error = US"expecting closing parenthesis";
+ else
+ while (isspace(*(++s)));
}
+ else if (*s != 0) *error = US"expecting operator";
}
-
*sptr = s;
return x;
}
+
static int
-eval_term(uschar **sptr, BOOL decimal, uschar **error)
+eval_number(uschar **sptr, BOOL decimal, uschar **error)
{
register int c;
int n;
uschar *s = *sptr;
while (isspace(*s)) s++;
c = *s;
-if (isdigit(c) || ((c == '-' || c == '+') && isdigit(s[1])))
+if (isdigit(c))
{
int count;
(void)sscanf(CS s, (decimal? "%d%n" : "%i%n"), &n, &count);
return n;
}
-static int eval_sumterm(uschar **sptr, BOOL decimal, uschar **error)
+
+static int eval_op_unary(uschar **sptr, BOOL decimal, uschar **error)
{
uschar *s = *sptr;
-int x = eval_term(&s, decimal, error);
+int x;
+while (isspace(*s)) s++;
+if (*s == '+' || *s == '-' || *s == '~')
+ {
+ int op = *s++;
+ x = eval_op_unary(&s, decimal, error);
+ if (op == '-') x = -x;
+ else if (op == '~') x = ~x;
+ }
+else
+ {
+ x = eval_number(&s, decimal, error);
+ }
+*sptr = s;
+return x;
+}
+
+
+static int eval_op_mult(uschar **sptr, BOOL decimal, uschar **error)
+{
+uschar *s = *sptr;
+int x = eval_op_unary(&s, decimal, error);
if (*error == NULL)
{
while (*s == '*' || *s == '/' || *s == '%')
{
int op = *s++;
- int y = eval_term(&s, decimal, error);
+ int y = eval_op_unary(&s, decimal, error);
if (*error != NULL) break;
if (op == '*') x *= y;
else if (op == '/') x /= y;
}
+static int eval_op_sum(uschar **sptr, BOOL decimal, uschar **error)
+{
+uschar *s = *sptr;
+int x = eval_op_mult(&s, decimal, error);
+if (*error == NULL)
+ {
+ while (*s == '+' || *s == '-')
+ {
+ int op = *s++;
+ int y = eval_op_mult(&s, decimal, error);
+ if (*error != NULL) break;
+ if (op == '+') x += y; else x -= y;
+ }
+ }
+*sptr = s;
+return x;
+}
+
+
+static int eval_op_shift(uschar **sptr, BOOL decimal, uschar **error)
+{
+uschar *s = *sptr;
+int x = eval_op_sum(&s, decimal, error);
+if (*error == NULL)
+ {
+ while ((*s == '<' || *s == '>') && s[1] == s[0])
+ {
+ int y;
+ int op = *s++;
+ s++;
+ y = eval_op_sum(&s, decimal, error);
+ if (*error != NULL) break;
+ if (op == '<') x <<= y; else x >>= y;
+ }
+ }
+*sptr = s;
+return x;
+}
+
+
+static int eval_op_and(uschar **sptr, BOOL decimal, uschar **error)
+{
+uschar *s = *sptr;
+int x = eval_op_shift(&s, decimal, error);
+if (*error == NULL)
+ {
+ while (*s == '&')
+ {
+ int y;
+ s++;
+ y = eval_op_shift(&s, decimal, error);
+ if (*error != NULL) break;
+ x &= y;
+ }
+ }
+*sptr = s;
+return x;
+}
+
+
+static int eval_op_xor(uschar **sptr, BOOL decimal, uschar **error)
+{
+uschar *s = *sptr;
+int x = eval_op_and(&s, decimal, error);
+if (*error == NULL)
+ {
+ while (*s == '^')
+ {
+ int y;
+ s++;
+ y = eval_op_and(&s, decimal, error);
+ if (*error != NULL) break;
+ x ^= y;
+ }
+ }
+*sptr = s;
+return x;
+}
+
+
+static int eval_op_or(uschar **sptr, BOOL decimal, uschar **error)
+{
+uschar *s = *sptr;
+int x = eval_op_xor(&s, decimal, error);
+if (*error == NULL)
+ {
+ while (*s == '|')
+ {
+ int y;
+ s++;
+ y = eval_op_xor(&s, decimal, error);
+ if (*error != NULL) break;
+ x |= y;
+ }
+ }
+*sptr = s;
+return x;
+}
+
/*************************************************
value = find_header(name, FALSE, &newsize, want_raw, charset);
/* If we didn't find the header, and the header contains a closing brace
- characters, this may be a user error where the terminating colon
+ character, this may be a user error where the terminating colon
has been omitted. Set a flag to adjust the error message in this case.
But there is no error here - nothing gets inserted. */
}
}
+ /* Shut down the sending side of the socket. This helps some servers to
+ recognise that it is their turn to do some work. Just in case some
+ system doesn't have this function, make it conditional. */
+
+ #ifdef SHUT_WR
+ shutdown(fd, SHUT_WR);
+ #endif
+
/* Now we need to read from the socket, under a timeout. The function
that reads a file can be used. */
git://git.exim.org / exim.git / blobdiff