Adding upstream version 3.7.10.upstream/3.7.10

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 233 insertions, 0 deletions

diff --git a/src/cleanup/cleanup_out.c b/src/cleanup/cleanup_out.c
new file mode 100644
index 0000000..5f8ed0a
--- /dev/null
+++ b/src/cleanup/cleanup_out.c
@@ -0,0 +1,233 @@
+/*++
+/* NAME
+/*	cleanup_out 3
+/* SUMMARY
+/*	record output support
+/* SYNOPSIS
+/*	#include "cleanup.h"
+/*
+/*	int	CLEANUP_OUT_OK(state)
+/*	CLEANUP_STATE *state;
+/*
+/*	void	cleanup_out(state, type, data, len)
+/*	CLEANUP_STATE *state;
+/*	int	type;
+/*	const char *data;
+/*	ssize_t	len;
+/*
+/*	void	cleanup_out_string(state, type, str)
+/*	CLEANUP_STATE *state;
+/*	int	type;
+/*	const char *str;
+/*
+/*	void	CLEANUP_OUT_BUF(state, type, buf)
+/*	CLEANUP_STATE *state;
+/*	int	type;
+/*	VSTRING	*buf;
+/*
+/*	void	cleanup_out_format(state, type, format, ...)
+/*	CLEANUP_STATE *state;
+/*	int	type;
+/*	const char *format;
+/*
+/*	void	cleanup_out_header(state, buf)
+/*	CLEANUP_STATE *state;
+/*	VSTRING	*buf;
+/* DESCRIPTION
+/*	This module writes records to the output stream.
+/*
+/*	CLEANUP_OUT_OK() is a macro that evaluates to non-zero
+/*	as long as it makes sense to produce output. All output
+/*	routines below check for this condition.
+/*
+/*	cleanup_out() is the main record output routine. It writes
+/*	one record of the specified type, with the specified data
+/*	and length to the output stream.
+/*
+/*	cleanup_out_string() outputs one string as a record.
+/*
+/*	CLEANUP_OUT_BUF() is an unsafe macro that outputs
+/*	one string buffer as a record.
+/*
+/*	cleanup_out_format() formats its arguments and writes
+/*	the result as a record.
+/*
+/*	cleanup_out_header() outputs a multi-line header as records
+/*	of the specified type. The input is expected to be newline
+/*	separated (not newline terminated), and is modified.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <errno.h>
+#include <stdlib.h>			/* 44BSD stdarg.h uses abort() */
+#include <stdarg.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstring.h>
+#include <vstream.h>
+#include <split_at.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <record.h>
+#include <rec_type.h>
+#include <cleanup_user.h>
+#include <mail_params.h>
+#include <lex_822.h>
+#include <smtputf8.h>
+
+/* Application-specific. */
+
+#include "cleanup.h"
+
+#define STR	vstring_str
+
+/* cleanup_out - output one single record */
+
+void    cleanup_out(CLEANUP_STATE *state, int type, const char *string, ssize_t len)
+{
+    int     err = 0;
+
+    /*
+     * Long message header lines have to be read and written as multiple
+     * records. Other header/body content, and envelope data, is copied one
+     * record at a time. Be sure to not skip a zero-length request.
+     * 
+     * XXX We don't know if we're writing a message header or not, but that is
+     * not a problem. A REC_TYPE_NORM or REC_TYPE_CONT record can always be
+     * chopped up into an equivalent set of REC_TYPE_CONT plus REC_TYPE_NORM
+     * records.
+     */
+    if (CLEANUP_OUT_OK(state) == 0)
+	return;
+
+#define TEXT_RECORD(t)	((t) == REC_TYPE_NORM || (t) == REC_TYPE_CONT)
+
+    if (msg_verbose && !TEXT_RECORD(type))
+	msg_info("cleanup_out: %c %.*s", type, (int) len, string);
+
+    if (var_line_limit <= 0)
+	msg_panic("cleanup_out: bad line length limit: %d", var_line_limit);
+    do {
+	if (len > var_line_limit && TEXT_RECORD(type)) {
+	    err = rec_put(state->dst, REC_TYPE_CONT, string, var_line_limit);
+	    string += var_line_limit;
+	    len -= var_line_limit;
+	} else {
+	    err = rec_put(state->dst, type, string, len);
+	    break;
+	}
+    } while (len > 0 && err >= 0);
+
+    if (err < 0) {
+	if (errno == EFBIG) {
+	    msg_warn("%s: queue file size limit exceeded",
+		     state->queue_id);
+	    state->errs |= CLEANUP_STAT_SIZE;
+	} else {
+	    msg_warn("%s: write queue file: %m", state->queue_id);
+	    state->errs |= CLEANUP_STAT_WRITE;
+	}
+    }
+}
+
+/* cleanup_out_string - output string to one single record */
+
+void    cleanup_out_string(CLEANUP_STATE *state, int type, const char *string)
+{
+    cleanup_out(state, type, string, strlen(string));
+}
+
+/* cleanup_out_format - output one formatted record */
+
+void    cleanup_out_format(CLEANUP_STATE *state, int type, const char *fmt,...)
+{
+    static VSTRING *vp;
+    va_list ap;
+
+    if (vp == 0)
+	vp = vstring_alloc(100);
+    va_start(ap, fmt);
+    vstring_vsprintf(vp, fmt, ap);
+    va_end(ap);
+    CLEANUP_OUT_BUF(state, type, vp);
+}
+
+/* cleanup_out_header - output one multi-line header as a bunch of records */
+
+void    cleanup_out_header(CLEANUP_STATE *state, VSTRING *header_buf)
+{
+    char   *start = vstring_str(header_buf);
+    char   *line;
+    char   *next_line;
+    ssize_t line_len;
+
+    /*
+     * Fix 20140711: Auto-detect the presence of a non-ASCII header.
+     */
+    if (var_smtputf8_enable && *STR(header_buf) && !allascii(STR(header_buf))) {
+	state->smtputf8 |= SMTPUTF8_FLAG_HEADER;
+	/* Fix 20140713: request SMTPUTF8 support selectively. */
+	if (state->flags & CLEANUP_FLAG_AUTOUTF8)
+	    state->smtputf8 |= SMTPUTF8_FLAG_REQUESTED;
+    }
+
+    /*
+     * Prepend a tab to continued header lines that went through the address
+     * rewriting machinery. See cleanup_fold_header(state) below for the form
+     * of such header lines. NB: This code destroys the header. We could try
+     * to avoid clobbering it, but we're not going to use the data any
+     * further.
+     * 
+     * XXX We prefer to truncate a header at the last line boundary before the
+     * header size limit. If this would undershoot the limit by more than
+     * 10%, we truncate between line boundaries to avoid losing too much
+     * text. This "unkind cut" may result in syntax errors and may trigger
+     * warnings from down-stream MTAs.
+     * 
+     * If Milter is enabled, pad a short header record with a dummy record so
+     * that a header record can safely be overwritten by a pointer record.
+     * This simplifies header modification enormously.
+     */
+    for (line = start; line; line = next_line) {
+	next_line = split_at(line, '\n');
+	line_len = next_line ? next_line - 1 - line : strlen(line);
+	if (line + line_len > start + var_header_limit) {
+	    if (line - start > 0.9 * var_header_limit)	/* nice cut */
+		break;
+	    start[var_header_limit] = 0;	/* unkind cut */
+	    next_line = 0;
+	}
+	if (line == start) {
+	    cleanup_out_string(state, REC_TYPE_NORM, line);
+	    if ((state->milters || cleanup_milters)
+		&& line_len < REC_TYPE_PTR_PAYL_SIZE)
+		rec_pad(state->dst, REC_TYPE_DTXT,
+			REC_TYPE_PTR_PAYL_SIZE - line_len);
+	} else if (IS_SPACE_TAB(*line)) {
+	    cleanup_out_string(state, REC_TYPE_NORM, line);
+	} else {
+	    cleanup_out_format(state, REC_TYPE_NORM, "\t%s", line);
+	}
+    }
+}