+/*************************************************
+* Set up added header line(s) *
+*************************************************/
+
+/* This function is called by the add_header modifier, and also from acl_warn()
+to implement the now-deprecated way of adding header lines using "message" on a
+"warn" verb. The argument is treated as a sequence of header lines which are
+added to a chain, provided there isn't an identical one already there.
+
+Argument: string of header lines
+Returns: nothing
+*/
+
+static void
+setup_header(uschar *hstring)
+{
+uschar *p, *q;
+int hlen = Ustrlen(hstring);
+
+/* An empty string does nothing; otherwise add a final newline if necessary. */
+
+if (hlen <= 0) return;
+if (hstring[hlen-1] != '\n') hstring = string_sprintf("%s\n", hstring);
+
+/* Loop for multiple header lines, taking care about continuations */
+
+for (p = q = hstring; *p != 0; )
+ {
+ uschar *s;
+ int newtype = htype_add_bot;
+ header_line **hptr = &acl_added_headers;
+
+ /* Find next header line within the string */
+
+ for (;;)
+ {
+ q = Ustrchr(q, '\n');
+ if (*(++q) != ' ' && *q != '\t') break;
+ }
+
+ /* If the line starts with a colon, interpret the instruction for where to
+ add it. This temporarily sets up a new type. */
+
+ if (*p == ':')
+ {
+ if (strncmpic(p, US":after_received:", 16) == 0)
+ {
+ newtype = htype_add_rec;
+ p += 16;
+ }
+ else if (strncmpic(p, US":at_start_rfc:", 14) == 0)
+ {
+ newtype = htype_add_rfc;
+ p += 14;
+ }
+ else if (strncmpic(p, US":at_start:", 10) == 0)
+ {
+ newtype = htype_add_top;
+ p += 10;
+ }
+ else if (strncmpic(p, US":at_end:", 8) == 0)
+ {
+ newtype = htype_add_bot;
+ p += 8;
+ }
+ while (*p == ' ' || *p == '\t') p++;
+ }
+
+ /* See if this line starts with a header name, and if not, add X-ACL-Warn:
+ to the front of it. */
+
+ for (s = p; s < q - 1; s++)
+ {
+ if (*s == ':' || !isgraph(*s)) break;
+ }
+
+ s = string_sprintf("%s%.*s", (*s == ':')? "" : "X-ACL-Warn: ", q - p, p);
+ hlen = Ustrlen(s);
+
+ /* See if this line has already been added */
+
+ while (*hptr != NULL)
+ {
+ if (Ustrncmp((*hptr)->text, s, hlen) == 0) break;
+ hptr = &((*hptr)->next);
+ }
+
+ /* Add if not previously present */
+
+ if (*hptr == NULL)
+ {
+ header_line *h = store_get(sizeof(header_line));
+ h->text = s;
+ h->next = NULL;
+ h->type = newtype;
+ h->slen = hlen;
+ *hptr = h;
+ hptr = &(h->next);
+ }
+
+ /* Advance for next header line within the string */
+
+ p = q;
+ }
+}
+
+
+
+
git://git.exim.org / users / jgh / exim.git / blobdiff