Fix invalid pointer arithmetic.

[nmh] / h / addrsbr.h

diff --git a/h/addrsbr.h b/h/addrsbr.h
index a6c7a41c9d964640a91473c057a506be0c04fbc5..61ff9681a9177d2a8ce21fc62a7e6c907f40f2c5 100644 (file)
--- a/h/addrsbr.h
+++ b/h/addrsbr.h
@@ -1,40 +1,109 @@
-
-/*
- * addrsbr.h -- definitions for the address parsing system
+/* addrsbr.h -- definitions for the address parsing system
  */
 
-#define        AD_HOST 1               /* getm(): lookup official hostname    */
-#define        AD_NHST 0               /* getm(): do not lookup official name */
-#define        AD_NAME AD_NHST         /* AD_HOST is TOO slow                 */
-
 #define        UUCPHOST        (-1)
 #define        LOCALHOST       0
 #define        NETHOST         1
 #define        BADHOST         2
 
+/*
+ * The email structure used by nmh to define an email address
+ */
+
 struct mailname {
-    struct mailname *m_next;
-    char *m_text;
-    char *m_pers;
-    char *m_mbox;
-    char *m_host;
-    char *m_path;
-    int m_type;
-    char m_nohost;
-    char m_bcc;
-    int m_ingrp;
-    char *m_gname;
-    char *m_note;
+    struct mailname *m_next;   /* Linked list linkage; available for */
+                               /* application use */
+    char *m_text;              /* Full unparsed text of email address */
+    char *m_pers;              /* display-name in RFC 5322 parlance */
+    char *m_mbox;              /* local-part in RFC 5322 parlance */
+    char *m_host;              /* domain in RFC 5322 parlance */
+    char *m_path;              /* Host routing; should not be used */
+    int m_type;                        /* UUCPHOST, LOCALHOST, NETHOST, or BADHOST */
+    char m_nohost;             /* True if no host part available */
+    char m_bcc;                        /* Used by post to keep track of bcc's */
+    int m_ingrp;               /* True if email address is in a group */
+    char *m_gname;             /* display-name of group */
+    char *m_note;              /* Note (post-address comment) */
 };
 
+/*
+ * See notes for auxformat() below.
+ */
+
 #define        adrformat(m) auxformat ((m), 1)
 
 /*
  *  prototypes
  */
 void mnfree(struct mailname *);
-int ismymbox(struct mailname *);
-char *getname(char *);
-char *adrsprintf(char *, char *);
-char *auxformat(struct mailname *, int);
-struct mailname *getm(char *, char *, int, int, char *);
+bool ismymbox(struct mailname *);
+
+/*
+ * Enable Email Address Internationalization, which requires
+ * support of 8-bit addresses.
+ */
+void enable_eai(void);
+
+/*
+ * Parse an address header, and return a sequence of email addresses.
+ * This function is the main entry point into the nmh address parser.
+ * It is used in conjunction with getm() to parse an email header.
+ *
+ * Arguments include:
+ *
+ * header      - Pointer to the start of an email header.
+ *
+ * On the first call, header is copied and saved internally.  Each email
+ * address in the header is returned on the first and subsequent calls
+ * to getname().  When there are no more email addresses available in
+ * the header, NULL is returned and the parser's internal state is
+ * reset.
+ */
+
+char *getname(const char *header);
+
+/*
+ * Format an email address given a struct mailname.
+ *
+ * This function takes a pointer to a struct mailname and returns a pointer
+ * to a static buffer holding the resulting email address.
+ *
+ * It is worth noting that group names are NOT handled, so if you want to
+ * do something with groups you need to handle it externally to this function.
+ *
+ * Arguments include:
+ *
+ * mp          - Pointer to mailname structure
+ * extras      - If true, include the personal name and/or note in the
+ *               address.  Otherwise, omit it.
+ */
+
+char *auxformat(struct mailname *mp, int extras);
+
+/*
+ * Parse an email address into it's components.
+ *
+ * Used in conjunction with getname() to parse a complete email header.
+ *
+ * Arguments include:
+ *
+ * str         - Email address being parsed.
+ * dfhost      - A default host to append to the email address if
+ *               one is not included.  If NULL, use nmh's idea of
+ *               localhost().
+ * dftype      - If dfhost is given, use dftype as the email address type
+ *               if no host is in the email address.
+ * eresult     - A buffer containing an error message returned by the
+ *               address parser.  May be NULL.
+ * eresultsize - The size of the buffer passed in eresult.
+ *
+ * A pointer to an allocated struct mailname corresponding to the email
+ * address is returned.
+ *
+ * This function used to have an argument called 'wanthost' which would
+ * control whether or not it would canonicalize hostnames in email
+ * addresses.  This functionality was removed for nmh 1.5, and eventually
+ * all of the code that used this argument was garbage collected.
+ */
+struct mailname *getm(char *str, char *dfhost, int dftype, char *eresult,
+                     size_t eresultsize);