diff options
Diffstat (limited to 'rfc822.c')
| -rw-r--r-- | rfc822.c | 40 |
1 files changed, 27 insertions, 13 deletions
@@ -1,17 +1,36 @@ -/* - * rfc822.c -- code for slicing and dicing RFC822 mail headers - * - * Copyright 1997 by Eric S. Raymond - * For license terms, see the file COPYING in this directory. - */ +/***************************************************************************** +NAME: + rfc822.c -- code for slicing and dicing RFC822 mail headers + +ENTRY POINTS: + nextaddr() -- parse the next address out of an RFC822 header + reply_hack() -- append hostname to local header addresses + +THEORY: + How to parse RFC822 headers in C. This is not a fully conformant +implementation of RFC822 or RFC2822, but it has been in production use +in a widely-deployed MTA (fetcmail) since 1996 without complaints. +Really perverse combinations of quoting and commenting could break it. + +AUTHOR: + Eric S. Raymond <esr@thyrsus.com>, 1997. This source code example +is part of fetchmail and the Unix Cookbook, and are released under the +MIT license. Compile with -DMAIN to build the demonstrator. + +******************************************************************************/ #include <stdio.h> #include <ctype.h> #include <string.h> #include <stdlib.h> +#ifndef MAIN #include "fetchmail.h" #include "i18n.h" +#else +static int verbose; +char *program_name = "rfc822"; +#endif /* MAIN */ #ifndef TRUE #define TRUE 1 @@ -20,11 +39,6 @@ #define HEADER_END(p) ((p)[0] == '\n' && ((p)[1] != ' ' && (p)[1] != '\t')) -#ifdef MAIN -static int verbose; -char *program_name = "rfc822"; -#endif /* MAIN */ - unsigned char *reply_hack(buf, host) /* hack message headers so replies will work properly */ unsigned char *buf; /* header to be hacked */ @@ -201,7 +215,7 @@ unsigned char *nxtaddr(hdr) /* parse addresses in succession out of a specified RFC822 header */ const unsigned char *hdr; /* header to be parsed, NUL to continue previous hdr */ { - static unsigned char address[POPBUFSIZE+1]; + static unsigned char address[BUFSIZ]; static int tp; static const unsigned char *hp; static int state, oldstate; @@ -394,7 +408,7 @@ static void parsebuf(unsigned char *longbuf, int reply) main(int argc, char *argv[]) { - unsigned char buf[MSGBUFSIZE], longbuf[BUFSIZ]; + unsigned char buf[BUFSIZ], longbuf[BUFSIZ]; int ch, reply; verbose = reply = FALSE; |