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authorJohn Denker <jsd@av8n.com>2012-06-02 01:58:45 (GMT)
committerJohn Denker <jsd@av8n.com>2012-06-02 01:58:45 (GMT)
commitb732a73bc773789894466b0e5320b2f1fe42c7e9 (patch)
tree385358983f064a1f10a5080b33a3ba13010886db /hfield.c
parent634d365a03cb0581a062cd3cf4db9ae69f1cde26 (diff)
original, as downloaded from http://www.qmail.org/netqmail-1.06.tar.gz
Diffstat (limited to 'hfield.c')
-rw-r--r--hfield.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/hfield.c b/hfield.c
new file mode 100644
index 0000000..06de0be
--- /dev/null
+++ b/hfield.c
@@ -0,0 +1,125 @@
+#include "hfield.h"
+
+static char *(hname[]) = {
+ "unknown-header"
+, "sender"
+, "from"
+, "reply-to"
+, "to"
+, "cc"
+, "bcc"
+, "date"
+, "message-id"
+, "subject"
+, "resent-sender"
+, "resent-from"
+, "resent-reply-to"
+, "resent-to"
+, "resent-cc"
+, "resent-bcc"
+, "resent-date"
+, "resent-message-id"
+, "return-receipt-to"
+, "errors-to"
+, "apparently-to"
+, "received"
+, "return-path"
+, "delivered-to"
+, "content-length"
+, "content-type"
+, "content-transfer-encoding"
+, "notice-requested-upon-delivery-to"
+, "mail-followup-to"
+, 0
+};
+
+static int hmatch(s,len,t)
+char *s;
+int len;
+char *t;
+{
+ int i;
+ char ch;
+
+ for (i = 0;ch = t[i];++i)
+ {
+ if (i >= len) return 0;
+ if (ch != s[i])
+ {
+ if (ch == '-') return 0;
+ if (ch - 32 != s[i]) return 0;
+ }
+ }
+ for (;;)
+ {
+ if (i >= len) return 0;
+ ch = s[i];
+ if (ch == ':') return 1;
+ if ((ch != ' ') && (ch != '\t')) return 0;
+ ++i;
+ }
+}
+
+int hfield_known(s,len)
+char *s;
+int len;
+{
+ int i;
+ char *t;
+
+ for (i = 1;t = hname[i];++i)
+ if (hmatch(s,len,t))
+ return i;
+ return 0;
+}
+
+int hfield_valid(s,len)
+char *s;
+int len;
+{
+ int i;
+ int j;
+ char ch;
+
+ for (j = 0;j < len;++j)
+ if (s[j] == ':')
+ break;
+ if (j >= len) return 0;
+ while (j)
+ {
+ ch = s[j - 1];
+ if ((ch != ' ') && (ch != '\t'))
+ break;
+ --j;
+ }
+ if (!j) return 0;
+
+ for (i = 0;i < j;++i)
+ {
+ ch = s[i];
+ if (ch <= 32) return 0;
+ if (ch >= 127) return 0;
+ }
+ return 1;
+}
+
+unsigned int hfield_skipname(s,len)
+char *s;
+int len;
+{
+ int i;
+ char ch;
+
+ for (i = 0;i < len;++i)
+ if (s[i] == ':')
+ break;
+ if (i < len) ++i;
+ while (i < len)
+ {
+ ch = s[i];
+ if ((ch != '\t') && (ch != '\n') && (ch != '\r') && (ch != ' '))
+ break;
+ ++i;
+ }
+ return i;
+}