/*
* 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(char line[], struct headline *hl, char pbuf[])
{
char *cp, *sp;
char word[LINESIZE];
hl->l_from = NULL;
hl->l_tty = NULL;
hl->l_date = NULL;
cp = line;
sp = pbuf;
/*
* Skip over "From" first.
*/
cp = nextword(cp, word);
/*
* Check for missing return-path.
*/
if (isdate(cp)) {
hl->l_date = copyin(cp, &sp);
return;
}
cp = nextword(cp, word);
if (strlen(word) > 0)
hl->l_from = copyin(word, &sp);
if (cp != NULL && strncmp(cp, "tty", 3) == 0) {
cp = nextword(cp, word);
hl->l_tty = copyin(word, &sp);
}
if (cp != NULL)
hl->l_date = copyin(cp, &sp);
}
/*
* See if the passed line buffer is a mail header.
* Return true if yes. Note the extreme pains to
* accommodate all funny formats.
*/
int
ishead(char *linebuf)
{
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 == NULL || hl.l_date == NULL) {
fail(linebuf, "No from or date field");
return(0);
}
/* be very tolerant about the date */
#ifndef DEBIAN
if (!isdate(hl.l_date)) {
fail(linebuf, "Date field not legal date");
return(0);
}
#endif
/*
* I guess we got it!
*/
return(1);
}
/*
* See if the passed line buffer is a mail header.
* Return true if yes. Note the extreme pains to
* accommodate all funny formats.
*/
int
ishead(char linebuf[])
{
struct headline hl;
char parbuf[BUFSIZ];
if (strncmp(linebuf, "From ", 5) != 0)
return (0);
parse(linebuf, &hl, parbuf);
if (hl.l_date == NULL) {
fail(linebuf, "No 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);
}