+
−/*  MasqMail
+
−    Copyright (C) 1999-2001 Oliver Kurth
+
−    Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
+
−
+
−    This program is free software; you can redistribute it and/or modify
+
−    it under the terms of the GNU General Public License as published by
+
−    the Free Software Foundation; either version 2 of the License, or
+
−    (at your option) any later version.
+
−
+
−    This program is distributed in the hope that it will be useful,
+
−    but WITHOUT ANY WARRANTY; without even the implied warranty of
+
−    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+
−    GNU General Public License for more details.
+
−
+
−    You should have received a copy of the GNU General Public License
+
−    along with this program; if not, write to the Free Software
+
−    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
−*/
+
−
+
−#include "masqmail.h"
+
−#include "readsock.h"
+
−
+
−/* must match PROT_* in masqmail.h */
+
−gchar *prot_names[] = {
+
−	"local",
+
−	"SMTP",
+
−	"ESMTP",
+
−	"(unknown)"  /* should not happen, but better than crashing. */
+
−};
+
−
+
−static gchar*
+
−string_base62(gchar * res, guint value, gchar len)
+
−{
+
−	static gchar base62_chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
−	gchar *p = res + len;
+
−	*p = '\0';
+
−	while (p > res) {
+
−		*(--p) = base62_chars[value % 62];
+
−		value /= 62;
+
−	}
+
−	return res;
+
−}
+
−
+
−static gint
+
−_g_list_addr_isequal(gconstpointer a, gconstpointer b)
+
−{
+
−	address *addr1 = (address *) a;
+
−	address *addr2 = (address *) b;
+
−	int ret;
+
−
+
−	if ((ret = strcasecmp(addr1->domain, addr2->domain)) == 0) {
+
−		return strcmp(addr1->local_part, addr2->local_part);
+
−	}
+
−	return ret;
+
−}
+
−
+
−/* accept message from anywhere.
+
−   A message from local is indicated by msg->recieved_host == NULL
+
−
+
−   The -t option: With the ACC_RCPT_FROM_HEAD flag the addrs found found
+
−   in To/Cc/Bcc headers are added to the recipient list.
+
−*/
+
−
+
−accept_error
+
−accept_message_stream(FILE * in, message * msg, guint flags)
+
−{
+
−	gchar *line, *line1;
+
−	int line_size = MAX_DATALINE;
+
−	gboolean in_headers = TRUE;
+
−	header *hdr = NULL;
+
−	gint line_cnt = 0, data_size = 0;
+
−
+
−	line = g_malloc(line_size);
+
−	line[0] = '\0';
+
−
+
−	while (TRUE) {
+
−		int len = read_sockline1(in, &line, &line_size, 5 * 60, READSOCKL_CVT_CRLF);
+
−
+
−		line1 = line;
+
−
+
−		if ((line[0] == '.') && (!(flags & ACC_DOT_IGNORE))) {
+
−			if (line[1] == '\n') {
+
−				g_free(line);
+
−				break;
+
−			}
+
−			line1++;
+
−		}
+
−
+
−		if ((len == -1) && (flags & (ACC_DOT_IGNORE | ACC_NODOT_RELAX))) {
+
−			/* we got an EOF, and the last line was not terminated by a CR */
+
−			gint len1 = strlen(line1);
+
−			if (len1 > 0) {  /* == 0 is 'normal' (EOF after a CR) */
+
−				if (line1[len1 - 1] != '\n') {  /* some mail clients allow unterminated lines */
+
−					line1[len1] = '\n';
+
−					line1[len1 + 1] = '\0';
+
−					msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1));
+
−					data_size += strlen(line1);
+
−					line_cnt++;
+
−				}
+
−			}
+
−			break;
+
−
+
−		} else if (len == -1) {
+
−			g_free(line);
+
−			return AERR_EOF;
+
−
+
−		} else if (len == -2) {
+
−			/* should not happen any more */
+
−			g_free(line);
+
−			return AERR_OVERFLOW;
+
−
+
−		} else if (len == -3) {
+
−			g_free(line);
+
−			return AERR_TIMEOUT;
+
−
+
−		} else if (len <= 0) {
+
−			/* does not happen */
+
−			g_free(line);
+
−			DEBUG(5) debugf("read_sockline returned %d\n", len);
+
−			return AERR_UNKNOWN;
+
−
+
−		}
+
−
+
−		if (in_headers) {
+
−
+
−			/* some pop servers send the 'From ' line, skip it: */
+
−			if (!msg->hdr_list && strncmp(line1, "From ", 5) == 0) {
+
−				continue;
+
−			}
+
−
+
−			if (line1[0] == ' ' || line1[0] == '\t') {
+
−				/* continuation of 'folded' header: */
+
−				if (hdr) {
+
−					char* cp;
+
−					cp = g_strconcat(hdr->header, line1, NULL);
+
−					hdr->value = cp + (hdr->value - hdr->header);
+
−					free(hdr->header);
+
−					hdr->header = cp;
+
−				}
+
−
+
−			} else if (line1[0] == '\n') {
+
−				/* an empty line marks end of headers */
+
−				in_headers = FALSE;
+
−			} else {
+
−				/* in all other cases we expect another header */
+
−				if ((hdr = get_header(line1))) {
+
−					msg->hdr_list = g_list_append(msg->hdr_list, hdr);
+
−				} else {
+
−					/* if get_header() returns NULL, no header was recognized,
+
−					   so this seems to be the first data line of a broken mailer
+
−					   which does not send an empty line after the headers */
+
−					in_headers = FALSE;
+
−					msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1));
+
−				}
+
−			}
+
−		} else {
+
−			/* message body */
+
−			msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1));
+
−			data_size += strlen(line1);
+
−			line_cnt++;
+
−		}
+
−
+
−		if (conf.max_msg_size && (data_size > conf.max_msg_size)) {
+
−			DEBUG(4) debugf("accept_message_stream(): "
+
−					"received %d bytes (conf.max_msg_size=%d)\n",
+
−			                data_size, conf.max_msg_size);
+
−			return AERR_SIZE;
+
−		}
+
−
+
−	}
+
−
+
−	DEBUG(4) debugf("received %d lines of data (%d bytes)\n", line_cnt, data_size);
+
−
+
−	if (!msg->data_list) {
+
−		/* make sure data list is not NULL: */
+
−		msg->data_list = g_list_append(NULL, g_strdup(""));
+
−	}
+
−	msg->data_list = g_list_reverse(msg->data_list);
+
−
+
−	/* we get here after we succesfully received the mail data */
+
−
+
−	msg->data_size = data_size;
+
−	msg->received_time = time(NULL);
+
−
+
−	return AERR_OK;
+
−}
+
−
+
−accept_error
+
−accept_message_prepare(message * msg, guint flags)
+
−{
+
−	struct passwd *passwd = NULL;
+
−	time_t rec_time = time(NULL);
+
−
+
−	DEBUG(5) debugf("accept_message_prepare()\n");
+
−
+
−	/* create unique message id */
+
−	msg->uid = g_malloc(14);
+
−	string_base62(msg->uid, rec_time, 6);
+
−	msg->uid[6] = '-';
+
−	string_base62(msg->uid + 7, getpid(), 3);
+
−	msg->uid[10] = '-';
+
−	string_base62(msg->uid + 11, msg->transfer_id, 2);
+
−	msg->uid[13] = '\0';
+
−
+
−	/* if local, get password entry and set return path if missing */
+
−	if (!msg->received_host) {
+
−		passwd = g_memdup(getpwuid(geteuid()), sizeof(struct passwd));
+
−		msg->ident = g_strdup(passwd->pw_name);
+
−		if (!msg->return_path) {
+
−			gchar *path = g_strdup_printf("<%s@%s>", passwd->pw_name, conf.host_name);
+
−			DEBUG(3) debugf("setting return_path for local accept: %s\n", path);
+
−			msg->return_path = create_address(path, TRUE);
+
−			g_free(path);
+
−		}
+
−	}
+
−
+
−	/* scan headers */
+
−	{
+
−		gboolean has_id = FALSE;
+
−		gboolean has_date = FALSE;
+
−		gboolean has_sender = FALSE;
+
−		gboolean has_from = FALSE;
+
−		gboolean has_to_or_cc = FALSE;
+
−		GList *hdr_node, *hdr_node_next;
+
−		header *hdr;
+
−
+
−		for (hdr_node = g_list_first(msg->hdr_list);
+
−		     hdr_node;
+
−		     hdr_node = hdr_node_next) {
+
−			hdr_node_next = g_list_next(hdr_node);
+
−			hdr = ((header *) (hdr_node->data));
+
−			DEBUG(5) debugf("scanning headers: %s", hdr->header);
+
−			switch (hdr->id) {
+
−			case HEAD_MESSAGE_ID:
+
−				has_id = TRUE;
+
−				break;
+
−			case HEAD_DATE:
+
−				has_date = TRUE;
+
−				break;
+
−			case HEAD_FROM:
+
−				has_from = TRUE;
+
−				break;
+
−			case HEAD_SENDER:
+
−				has_sender = TRUE;
+
−				break;
+
−			case HEAD_TO:
+
−			case HEAD_CC:
+
−				has_to_or_cc = TRUE;
+
−				/* fall through */
+
−			case HEAD_BCC:
+
−				if (flags & ACC_RCPT_FROM_HEAD) {
+
−					/* -t option (see comment above) */
+
−					DEBUG(5) debugf("hdr->value = %s\n", hdr->value);
+
−					if (hdr->value) {
+
−						msg->rcpt_list = addr_list_append_rfc822(msg->rcpt_list, hdr->value, conf.host_name);
+
−					}
+
−				}
+
−				if (hdr->id == HEAD_BCC) {
+
−					DEBUG(3) debugf("removing 'Bcc' header\n");
+
−					msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node);
+
−					g_list_free_1(hdr_node);
+
−					destroy_header(hdr);
+
−				}
+
−				break;
+
−			case HEAD_ENVELOPE_TO:
+
−				if (flags & ACC_SAVE_ENVELOPE_TO) {
+
−					DEBUG(3) debugf("creating 'X-Orig-Envelope-To' header\n");
+
−					msg->hdr_list = g_list_prepend(msg->hdr_list, create_header(HEAD_UNKNOWN,
+
−					                               "X-Orig-Envelope-To: %s", hdr->value));
+
−				}
+
−				DEBUG(3) debugf("removing 'Envelope-To' header\n");
+
−				msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node);
+
−				g_list_free_1(hdr_node);
+
−				destroy_header(hdr);
+
−				break;
+
−			case HEAD_RETURN_PATH:
+
−				if (flags & ACC_MAIL_FROM_HEAD) {
+
−					/* usually POP3 accept */
+
−					msg->return_path = create_address_qualified(hdr->value, TRUE, msg->received_host);
+
−					DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path));
+
−				}
+
−				DEBUG(3) debugf("removing 'Return-Path' header\n");
+
−				msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node);
+
−				g_list_free_1(hdr_node);
+
−				destroy_header(hdr);
+
−				break;
+
−			default:
+
−				break;  /* make compiler happy */
+
−			}
+
−		}
+
−
+
−		if (!msg->return_path) {
+
−			/* TODO: do we still need this as we don't fetch
+
−			         mail anymore? */
+
−			/* this can happen for pop3 accept only and if no
+
−			   Return-Path: header was given */
+
−			GList *hdr_list;
+
−			header *hdr;
+
−
+
−			DEBUG(3) debugf("return_path == NULL\n");
+
−
+
−			hdr_list = find_header(msg->hdr_list, HEAD_SENDER, NULL);
+
−			if (!hdr_list) {
+
−				hdr_list = find_header(msg->hdr_list, HEAD_FROM, NULL);
+
−			}
+
−			if (hdr_list) {
+
−				gchar *addr;
+
−				hdr = (header *) (g_list_first(hdr_list)->data);
+
−
+
−				DEBUG(5) debugf("hdr->value = '%s'\n", hdr->value);
+
−
+
−				addr = g_strdup(hdr->value);
+
−				g_strchomp(addr);
+
−
+
−				msg->return_path = create_address_qualified(addr, FALSE, msg->received_host);
+
−				if (msg->return_path) {
+
−					DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path));
+
−					msg->hdr_list = g_list_append( msg->hdr_list, create_header(HEAD_UNKNOWN, "X-Warning: return path set from %s address\n", hdr->id == HEAD_SENDER ? "Sender:" : "From:"));
+
−				}
+
−				g_free(addr);
+
−			}
+
−			if (!msg->return_path) {
+
−				/* no Sender: or From: or
+
−				   create_address_qualified failed */
+
−				msg->return_path = create_address_qualified("postmaster", TRUE, conf.host_name);
+
−				DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path));
+
−				msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_UNKNOWN, "X-Warning: real return path is unknown\n"));
+
−			}
+
−		}
+
−
+
−		/* here we should have our recipients, fail if not: */
+
−		if (!msg->rcpt_list) {
+
−			logwrite(LOG_WARNING, "no recipients found in message\n");
+
−			return AERR_NORCPT;
+
−		}
+
−
+
−		if (!has_sender && !has_from) {
+
−			DEBUG(3) debugf("adding 'From:' header\n");
+
−			if (msg->full_sender_name) {
+
−				msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_FROM, "From: \"%s\" <%s@%s>\n", msg->full_sender_name, msg->return_path->local_part, msg->return_path->domain));
+
−			} else {
+
−				msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_FROM, "From: <%s@%s>\n", msg->return_path->local_part, msg->return_path->domain));
+
−			}
+
−		}
+
−		if (!has_to_or_cc) {
+
−			DEBUG(3) debugf("no To: or Cc: header, hence adding `To: undisclosed recipients:;'\n");
+
−			msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_TO, "To: undisclosed-recipients:;\n"));
+
−		}
+
−		if (!has_date) {
+
−			DEBUG(3) debugf("adding 'Date:' header\n");
+
−			msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_DATE, "Date: %s\n", rec_timestamp()));
+
−		}
+
−		if (!has_id) {
+
−			DEBUG(3) debugf("adding 'Message-ID:' header\n");
+
−			msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_MESSAGE_ID, "Message-ID: <%s@%s>\n", msg->uid, conf.host_name));
+
−		}
+
−	}
+
−
+
−	/* Received header: */
+
−	/* At this point because we have to know the rcpts for the 'for' part */
+
−	/* The `for' part will only be used if exactly one rcpt is present. */
+
−	gchar *for_string = NULL;
+
−	header *hdr = NULL;
+
−
+
−	DEBUG(3) debugf("adding 'Received:' header\n");
+
−
+
−	if (g_list_length(msg->rcpt_list) == 1) {
+
−		address *addr = (address *) (g_list_first(msg->rcpt_list)->data);
+
−		for_string = g_strdup_printf("\n\tfor %s", addr_string(addr));
+
−	}
+
−
+
−	if (!msg->received_host) {
+
−		/* received locally */
+
−		hdr = create_header(HEAD_RECEIVED,
+
−		    "Received: by %s (%s %s, from userid %d)\n\tid %s%s; %s\n",
+
−		    conf.host_name, PACKAGE, VERSION, geteuid(),
+
−		    msg->uid, for_string ? for_string : "", rec_timestamp());
+
−	} else {
+
−		/* received from remote */
+
−#ifdef ENABLE_IDENT
+
−		DEBUG(5) debugf("adding 'Received:' header (5)\n");
+
−		hdr = create_header(HEAD_RECEIVED,
+
−		    "Received: from %s (ident=%s)\n\tby %s with %s (%s %s)\n\tid %s%s; %s\n",
+
−		    msg->received_host, msg->ident ? msg->ident : "unknown",
+
−		    conf.host_name, prot_names[msg->received_prot], PACKAGE,
+
−		    VERSION, msg->uid, for_string ? for_string : "",
+
−		    rec_timestamp());
+
−#else
+
−		hdr = create_header(HEAD_RECEIVED,
+
−		    "Received: from %s\n\tby %s with %s (%s %s)\n\tid %s%s; %s\n",
+
−		    msg->received_host, conf.host_name,
+
−		    prot_names[msg->received_prot], PACKAGE, VERSION,
+
−		    msg->uid, for_string ? for_string : "", rec_timestamp());
+
−#endif
+
−	}
+
−	msg->hdr_list = g_list_prepend(msg->hdr_list, hdr);
+
−
+
−	if (for_string)
+
−		g_free(for_string);
+
−
+
−	return AERR_OK;
+
−}
+
−
+
−accept_error
+
−accept_message(FILE * in, message * msg, guint flags)
+
−{
+
−	accept_error err;
+
−
+
−	err = accept_message_stream(in, msg, flags);
+
−	if (err == AERR_OK) {
+
−		err = accept_message_prepare(msg, flags);
+
−	}
+
−
+
−	return err;
+
−}