diff options
Diffstat (limited to 'usr.bin/mail/head.c')
| -rw-r--r-- | usr.bin/mail/head.c | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/usr.bin/mail/head.c b/usr.bin/mail/head.c deleted file mode 100644 index ca31ae1..0000000 --- a/usr.bin/mail/head.c +++ /dev/null @@ -1,254 +0,0 @@ -/* - * Copyright (c) 1980, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char sccsid[] = "@(#)head.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -#include "rcv.h" -#include "extern.h" - -/* - * Mail -- a mail program - * - * Routines for processing and detecting headlines. - */ - -/* - * See if the passed line buffer is a mail header. - * Return true if yes. Note the extreme pains to - * accomodate all funny formats. - */ -int -ishead(linebuf) - char linebuf[]; -{ - register char *cp; - struct headline hl; - char parbuf[BUFSIZ]; - - cp = linebuf; - if (*cp++ != 'F' || *cp++ != 'r' || *cp++ != 'o' || *cp++ != 'm' || - *cp++ != ' ') - return (0); - parse(linebuf, &hl, parbuf); - if (hl.l_from == NOSTR || hl.l_date == NOSTR) { - fail(linebuf, "No from or date field"); - return (0); - } - if (!isdate(hl.l_date)) { - fail(linebuf, "Date field not legal date"); - return (0); - } - /* - * I guess we got it! - */ - return (1); -} - -/*ARGSUSED*/ -void -fail(linebuf, reason) - char linebuf[], reason[]; -{ - - /* - if (value("debug") == NOSTR) - return; - fprintf(stderr, "\"%s\"\nnot a header because %s\n", linebuf, reason); - */ -} - -/* - * Split a headline into its useful components. - * Copy the line into dynamic string space, then set - * pointers into the copied line in the passed headline - * structure. Actually, it scans. - */ -void -parse(line, hl, pbuf) - char line[], pbuf[]; - register struct headline *hl; -{ - register char *cp; - char *sp; - char word[LINESIZE]; - - hl->l_from = NOSTR; - hl->l_tty = NOSTR; - hl->l_date = NOSTR; - cp = line; - sp = pbuf; - /* - * Skip over "From" first. - */ - cp = nextword(cp, word); - cp = nextword(cp, word); - if (*word) - hl->l_from = copyin(word, &sp); - if (cp != NOSTR && cp[0] == 't' && cp[1] == 't' && cp[2] == 'y') { - cp = nextword(cp, word); - hl->l_tty = copyin(word, &sp); - } - if (cp != NOSTR) - hl->l_date = copyin(cp, &sp); -} - -/* - * Copy the string on the left into the string on the right - * and bump the right (reference) string pointer by the length. - * Thus, dynamically allocate space in the right string, copying - * the left string into it. - */ -char * -copyin(src, space) - register char *src; - char **space; -{ - register char *cp; - char *top; - - top = cp = *space; - while (*cp++ = *src++) - ; - *space = cp; - return (top); -} - -/* - * Test to see if the passed string is a ctime(3) generated - * date string as documented in the manual. The template - * below is used as the criterion of correctness. - * Also, we check for a possible trailing time zone using - * the tmztype template. - */ - -/* - * 'A' An upper case char - * 'a' A lower case char - * ' ' A space - * '0' A digit - * 'O' An optional digit or space - * ':' A colon - * 'N' A new line - */ -char ctype[] = "Aaa Aaa O0 00:00:00 0000"; -char tmztype[] = "Aaa Aaa O0 00:00:00 AAA 0000"; - -int -isdate(date) - char date[]; -{ - - return cmatch(date, ctype) || cmatch(date, tmztype); -} - -/* - * Match the given string (cp) against the given template (tp). - * Return 1 if they match, 0 if they don't - */ -int -cmatch(cp, tp) - register char *cp, *tp; -{ - - while (*cp && *tp) - switch (*tp++) { - case 'a': - if (!islower(*cp++)) - return 0; - break; - case 'A': - if (!isupper(*cp++)) - return 0; - break; - case ' ': - if (*cp++ != ' ') - return 0; - break; - case '0': - if (!isdigit(*cp++)) - return 0; - break; - case 'O': - if (*cp != ' ' && !isdigit(*cp)) - return 0; - cp++; - break; - case ':': - if (*cp++ != ':') - return 0; - break; - case 'N': - if (*cp++ != '\n') - return 0; - break; - } - if (*cp || *tp) - return 0; - return (1); -} - -/* - * Collect a liberal (space, tab delimited) word into the word buffer - * passed. Also, return a pointer to the next word following that, - * or NOSTR if none follow. - */ -char * -nextword(wp, wbuf) - register char *wp, *wbuf; -{ - register c; - - if (wp == NOSTR) { - *wbuf = 0; - return (NOSTR); - } - while ((c = *wp++) && c != ' ' && c != '\t') { - *wbuf++ = c; - if (c == '"') { - while ((c = *wp++) && c != '"') - *wbuf++ = c; - if (c == '"') - *wbuf++ = c; - else - wp--; - } - } - *wbuf = '\0'; - for (; c == ' ' || c == '\t'; c = *wp++) - ; - if (c == 0) - return (NOSTR); - return (wp - 1); -} |
