*/
#include <h/mh.h>
-#include <h/mts.h>
#include <h/utils.h>
+#include <ctype.h>
+#include <sysexits.h>
/*
-** This module has a long and checkered history. First, it didn't burst
-** maildrops correctly because it considered two CTRL-A:s in a row to be
-** an inter-message delimiter. It really is four CTRL-A:s followed by a
-** newline. Unfortunately, MMDF will convert this delimiter *inside* a
-** message to a CTRL-B followed by three CTRL-A:s and a newline. This
-** caused the old version of m_getfld() to declare eom prematurely. The
-** fix was a lot slower than
+** This module has a long and checkered history.
**
-** c == '\001' && peekc (iob) == '\001'
+** [ Here had been some history of delimiter problems in MMDF maildrops ... ]
**
-** but it worked, and to increase generality, MBOX style maildrops could
-** be parsed as well. Unfortunately the speed issue finally caught up with
-** us since this routine is at the very heart of MH.
+** Unfortunately the speed issue finally caught up with us since this
+** routine is at the very heart of MH. To speed things up considerably, the
+** routine Eom() was made an auxilary function called by the macro eom().
+** Unless we are bursting a maildrop, the eom() macro returns FALSE saying
+** we aren't at the end of the message.
**
-** To speed things up considerably, the routine Eom() was made an auxilary
-** function called by the macro eom(). Unless we are bursting a maildrop,
-** the eom() macro returns FALSE saying we aren't at the end of the
-** message.
+** [ ... and here had been some more of it. ]
**
-** The next thing to do is to read the mts.conf file and initialize
-** delimiter[] and delimlen accordingly...
-**
-** After mhl was made a built-in in msh, m_getfld() worked just fine
-** (using m_unknown() at startup). Until one day: a message which was
-** the result of a bursting was shown. Then, since the burst boundaries
-** aren't CTRL-A:s, m_getfld() would blinding plunge on past the boundary.
-** Very sad. The solution: introduce m_eomsbr(). This hook gets called
-** after the end of each line (since testing for eom involves an fseek()).
-** This worked fine, until one day: a message with no body portion arrived.
-** Then the
-**
-** while (eom(c = getc(iob), iob))
-** continue;
-**
-** loop caused m_getfld() to return FMTERR. So, that logic was changed to
-** check for (*eom_action) and act accordingly.
-**
-** [ Note by meillo 2011-10:
-** as msh was removed from mmh, m_eomsbr() became irrelevant. ]
-**
-** This worked fine, until one day: someone didn't use four CTRL:A's as
-** their delimiters. So, the bullet got bit and we read mts.h and
-** continue to struggle on. It's not that bad though, since the only time
-** the code gets executed is when inc (or msh) calls it, and both of these
-** have already called mts_init().
**
** ------------------------
** (Written by Van Jacobson for the mh6 m_getfld, January, 1986):
** If you hack on this and slow it down, I, my children and my
** children's children will curse you.
**
-** This routine gets used on three different types of files: normal,
-** single msg files, "packed" unix or mmdf mailboxs (when used by inc)
-** and packed, directoried bulletin board files (when used by msh).
+** This routine gets used on two different types of files: normal,
+** single msg files and "packed" unix mailboxs (when used by inc).
** The biggest impact of different file types is in "eom" testing. The
** code has been carefully organized to test for eom at appropriate
** times and at no other times (since the check is quite expensive).
static unsigned char *matchc(int, char *, int, char *);
static unsigned char *locc(int, unsigned char *, unsigned char);
-#define eom(c,iob) (msg_style != MS_DEFAULT && \
+#define eom(c,iob) (ismbox && \
(((c) == *msg_delim && m_Eom(c,iob)) ||\
(eom_action && (*eom_action)(c))))
static unsigned char **pat_map;
/*
-** defined in sbr/m_msgdef.c = 0
** This is a disgusting hack for "inc" so it can know how many
** characters were stuffed in the buffer on the last call
** (see comments in uip/scansbr.c).
*/
-extern int msg_count;
+int msg_count = 0;
-/*
-** defined in sbr/m_msgdef.c = MS_DEFAULT
-*/
-extern int msg_style;
+int ismbox = FALSE;
/*
** The "full" delimiter string for a packed maildrop consists
** is used in m_Eom because the first character of the string
** has been read and matched before m_Eom is called.
*/
-extern char *msg_delim; /* defined in sbr/m_msgdef.c = "" */
+static char *msg_delim = "";
+
static unsigned char *fdelim;
static unsigned char *delimend;
static int fdelimlen;
# define DEFINED__FILBUF_TO_SOMETHING_SPECIFIC
#endif
-#ifdef SCO_5_STDIO
-# define _ptr __ptr
-# define _cnt __cnt
-# define _base __base
-# define _filbuf(fp) ((fp)->__cnt = 0, __filbuf(fp))
-# define DEFINED__FILBUF_TO_SOMETHING_SPECIFIC
-#endif
-
#ifndef DEFINED__FILBUF_TO_SOMETHING_SPECIFIC
extern int _filbuf(FILE*);
#endif
m_getfld(int state, unsigned char *name, unsigned char *buf,
int bufsz, FILE *iob)
{
- register unsigned char *bp, *cp, *ep, *sp;
- register int cnt, c, i, j;
+ unsigned char *bp, *cp, *ep, *sp;
+ int cnt, c, i, j;
if ((c = getc(iob)) < 0) {
msg_count = 0;
}
switch (state) {
- case FLDEOF:
- case BODYEOF:
case FLD:
if (c == '\n' || c == '-') {
/* we hit the header/body separator */
;
if (c < 0 || (c = getc(iob)) < 0 || eom(c, iob)) {
- if (! eom_action) {
+ if (!eom_action) {
/* flush null messages */
while ((c = getc(iob)) >= 0 && eom(c, iob))
;
*cp++ = j = *(iob->_ptr + c);
c = _filbuf(iob);
#endif
- if (c == EOF ||
- ((j == '\0' || j == '\n') && c != ' ' && c != '\t')) {
+ if (c == EOF || ((j == '\0' || j == '\n')
+ && c != ' ' && c != '\t')) {
if (c != EOF) {
#ifdef LINUX_STDIO
--iob->_IO_read_ptr;
cnt = ++iob->_cnt;
#endif
c = (cnt < i ? cnt : i);
- if (msg_style != MS_DEFAULT && c > 1) {
+ if (ismbox && c > 1) {
/*
** packed maildrop - only take up to the (possible)
** start of the next message. This "matchc" should
break;
default:
- adios(NULL, "m_getfld() called with bogus state of %d", state);
+ adios(EX_SOFTWARE, NULL, "m_getfld() called with bogus state of %d", state);
}
finish:
*cp = 0;
}
-#ifdef RPATHS
-static char unixbuf[BUFSIZ] = "";
-#endif /* RPATHS */
-
void
-m_unknown(FILE *iob)
+thisisanmbox(FILE *iob)
{
- register int c;
- register long pos;
+ int c;
char text[10];
- register char *cp;
- register char *delimstr;
+ char *cp;
+ char *delimstr;
-/*
-** Figure out what the message delimitter string is for this
-** maildrop. (This used to be part of m_Eom but I didn't like
-** the idea of an "if" statement that could only succeed on the
-** first call to m_Eom getting executed on each call, i.e., at
-** every newline in the message).
-**
-** If the first line of the maildrop is a Unix "From " line, we
-** say the style is MBOX and eat the rest of the line. Otherwise
-** abort.
-*/
+ c = getc(iob);
+ if (feof(iob)) {
+ return;
+ }
+ ungetc(c, iob);
- msg_style = MS_UNKNOWN;
+ /*
+ ** Figure out what the message delimitter string is for this
+ ** maildrop. (This used to be part of m_Eom but I didn't like
+ ** the idea of an "if" statement that could only succeed on the
+ ** first call to m_Eom getting executed on each call, i.e., at
+ ** every newline in the message).
+ **
+ ** If the first line of the maildrop is a Unix "From " line, we
+ ** say the style is MBOX and eat the rest of the line. Otherwise
+ ** abort.
+ */
- pos = ftell(iob);
- if (fread(text, sizeof(*text), 5, iob) == 5
- && strncmp(text, "From ", 5) == 0) {
- msg_style = MS_MBOX;
- delimstr = "\nFrom ";
-#ifndef RPATHS
- while ((c = getc(iob)) != '\n' && c >= 0)
- ;
-#else /* RPATHS */
- cp = unixbuf;
- while ((c = getc(iob)) != '\n' && cp - unixbuf < BUFSIZ - 1)
- *cp++ = c;
- *cp = 0;
-#endif /* RPATHS */
- } else {
- /* not a Unix style maildrop */
- adios(NULL, "No Unix style (mbox) maildrop.");
+ if (fread(text, sizeof(*text), 5, iob) != 5) {
+ adios(EX_IOERR, NULL, "Read error");
+ }
+ if (strncmp(text, "From ", 5)!=0) {
+ adios(EX_USAGE, NULL, "No Unix style (mbox) maildrop.");
+ }
+ ismbox = TRUE;
+ delimstr = "\nFrom ";
+ while ((c = getc(iob)) != '\n' && c >= 0) {
+ continue;
}
c = strlen(delimstr);
- fdelim = (unsigned char *) mh_xmalloc((size_t) (c + 3));
+ fdelim = mh_xcalloc(c + 3, sizeof(char));
*fdelim++ = '\0';
*fdelim = '\n';
msg_delim = (char *)fdelim+1;
strcpy(msg_delim, delimstr);
delimend = (unsigned char *)msg_delim + edelimlen;
if (edelimlen <= 1)
- adios(NULL, "maildrop delimiter must be at least 2 bytes");
+ adios(EX_DATAERR, NULL, "maildrop delimiter must be at least 2 bytes");
/*
** build a Boyer-Moore end-position map for the matcher in m_getfld.
** N.B. - we don't match just the first char (since it's the newline
** separator) or the last char (since the matchc would have found it
** if it was a real delim).
*/
- pat_map = (unsigned char **) calloc(256, sizeof(unsigned char *));
+ pat_map = mh_xcalloc(256, sizeof(unsigned char *));
for (cp = (char *) fdelim + 1; cp < (char *) delimend; cp++ )
pat_map[(unsigned char)*cp] = (unsigned char *) cp;
static int
m_Eom(int c, FILE *iob)
{
- register long pos = 0L;
- register int i;
+ long pos = 0L;
+ int i;
char text[10];
-#ifdef RPATHS
- register char *cp;
-#endif /* RPATHS */
pos = ftell(iob);
- if ((i = fread(text, sizeof *text, edelimlen, iob)) != edelimlen
- || (strncmp(text, (char *)edelim, edelimlen)!=0)) {
- if (i == 0 && msg_style == MS_MBOX)
+ if ((i = fread(text, sizeof *text, edelimlen, iob)) != edelimlen ||
+ (strncmp(text, (char *)edelim, edelimlen)!=0)) {
+ if (i == 0 && ismbox)
/*
** the final newline in the (brain damaged) unix-format
** maildrop is part of the delimitter - delete it.
return 0;
}
- if (msg_style == MS_MBOX) {
-#ifndef RPATHS
- while ((c = getc(iob)) != '\n')
- if (c < 0)
- break;
-#else /* RPATHS */
- cp = unixbuf;
- while ((c = getc(iob)) != '\n' && c >= 0 && cp - unixbuf < BUFSIZ - 1)
- *cp++ = c;
- *cp = 0;
-#endif /* RPATHS */
- }
-
- return 1;
-}
-
-
-#ifdef RPATHS
-/*
-** Return the Return-Path and Delivery-Date
-** header information.
-**
-** Currently, I'm assuming that the "From " line
-** takes one of the following forms.
-**
-** From sender date remote from host (for UUCP delivery)
-** From sender@host date (for sendmail delivery)
-*/
-
-int
-get_returnpath(char *rp, int rplen, char *dd, int ddlen)
-{
- char *ap, *bp, *cp, *dp;
-
- ap = unixbuf;
- if (!(bp = cp = strchr(ap, ' ')))
- return 0;
-
- /*
- ** Check for "remote from" in envelope to see
- ** if this message uses UUCP style addressing
- */
- while ((cp = strchr(++cp, 'r'))) {
- if (strncmp(cp, "remote from", 11) == 0) {
- cp = strrchr(cp, ' ');
- break;
+ if (ismbox) {
+ while ((c = getc(iob)) != '\n' && c >= 0) {
+ continue;
}
}
- /*
- ** Get the Return-Path information from
- ** the "From " envelope.
- */
- if (cp) {
- /* return path for UUCP style addressing */
- dp = strchr(++cp, '\n');
- snprintf(rp, rplen, "%.*s!%.*s\n", (int)(dp - cp), cp, (int)(bp - ap), ap);
- } else {
- /* return path for standard domain addressing */
- snprintf(rp, rplen, "%.*s\n", (int)(bp - ap), ap);
- }
-
- /*
- ** advance over the spaces to get to
- ** delivery date on envelope
- */
- while (*bp == ' ')
- bp++;
-
- /* Now get delivery date from envelope */
- snprintf(dd, ddlen, "%.*s\n", 24, bp);
-
- unixbuf[0] = 0;
return 1;
}
-#endif /* RPATHS */
static unsigned char *
matchc(int patln, char *pat, int strln, char *str)
{
- register char *es = str + strln - patln;
- register char *sp;
- register char *pp;
- register char *ep = pat + patln;
- register char pc = *pat++;
+ char *es = str + strln - patln;
+ char *sp;
+ char *pp;
+ char *ep = pat + patln;
+ char pc = *pat++;
for(;;) {
while (pc != *str++)
projects / mmh / blobdiff