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/* $OpenBSD: enqueue.c,v 1.113 2016/07/03 14:30:33 gilles Exp $ */ |
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/* |
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* Copyright (c) 2005 Henning Brauer <henning@bulabula.org> |
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* Copyright (c) 2009 Jacek Masiulaniec <jacekm@dobremiasto.net> |
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* Copyright (c) 2012 Gilles Chehade <gilles@poolp.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER |
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/queue.h> |
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#include <sys/socket.h> |
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#include <sys/tree.h> |
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#include <sys/stat.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <event.h> |
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#include <grp.h> |
32 |
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#include <imsg.h> |
33 |
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#include <inttypes.h> |
34 |
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#include <pwd.h> |
35 |
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#include <stdarg.h> |
36 |
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#include <stdio.h> |
37 |
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#include <stdlib.h> |
38 |
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#include <string.h> |
39 |
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#include <time.h> |
40 |
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#include <unistd.h> |
41 |
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#include <limits.h> |
42 |
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43 |
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#include "smtpd.h" |
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45 |
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extern struct imsgbuf *ibuf; |
46 |
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47 |
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void usage(void); |
48 |
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static void build_from(char *, struct passwd *); |
49 |
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static int parse_message(FILE *, int, int, FILE *); |
50 |
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static void parse_addr(char *, size_t, int); |
51 |
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static void parse_addr_terminal(int); |
52 |
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static char *qualify_addr(char *); |
53 |
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static void rcpt_add(char *); |
54 |
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static int open_connection(void); |
55 |
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static int get_responses(FILE *, int); |
56 |
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static int send_line(FILE *, int, char *, ...); |
57 |
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static int enqueue_offline(int, char *[], FILE *, FILE *); |
58 |
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static int savedeadletter(struct passwd *, FILE *); |
59 |
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60 |
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extern int srv_connected(void); |
61 |
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62 |
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enum headerfields { |
63 |
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HDR_NONE, |
64 |
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HDR_FROM, |
65 |
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HDR_TO, |
66 |
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HDR_CC, |
67 |
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HDR_BCC, |
68 |
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HDR_SUBJECT, |
69 |
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HDR_DATE, |
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HDR_MSGID, |
71 |
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HDR_MIME_VERSION, |
72 |
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HDR_CONTENT_TYPE, |
73 |
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HDR_CONTENT_DISPOSITION, |
74 |
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HDR_CONTENT_TRANSFER_ENCODING, |
75 |
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HDR_USER_AGENT |
76 |
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}; |
77 |
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78 |
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struct { |
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char *word; |
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enum headerfields type; |
81 |
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} keywords[] = { |
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{ "From:", HDR_FROM }, |
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{ "To:", HDR_TO }, |
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{ "Cc:", HDR_CC }, |
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{ "Bcc:", HDR_BCC }, |
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{ "Subject:", HDR_SUBJECT }, |
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{ "Date:", HDR_DATE }, |
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{ "Message-Id:", HDR_MSGID }, |
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{ "MIME-Version:", HDR_MIME_VERSION }, |
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{ "Content-Type:", HDR_CONTENT_TYPE }, |
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{ "Content-Disposition:", HDR_CONTENT_DISPOSITION }, |
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{ "Content-Transfer-Encoding:", HDR_CONTENT_TRANSFER_ENCODING }, |
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{ "User-Agent:", HDR_USER_AGENT }, |
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}; |
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#define LINESPLIT 990 |
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#define SMTP_LINELEN 1000 |
98 |
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#define TIMEOUTMSG "Timeout\n" |
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100 |
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#define WSP(c) (c == ' ' || c == '\t') |
101 |
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102 |
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int verbose = 0; |
103 |
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static char host[HOST_NAME_MAX+1]; |
104 |
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char *user = NULL; |
105 |
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time_t timestamp; |
106 |
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107 |
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struct { |
108 |
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int fd; |
109 |
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char *from; |
110 |
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char *fromname; |
111 |
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char **rcpts; |
112 |
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char *dsn_notify; |
113 |
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char *dsn_ret; |
114 |
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char *dsn_envid; |
115 |
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int rcpt_cnt; |
116 |
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int need_linesplit; |
117 |
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int saw_date; |
118 |
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int saw_msgid; |
119 |
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int saw_from; |
120 |
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int saw_mime_version; |
121 |
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int saw_content_type; |
122 |
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int saw_content_disposition; |
123 |
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int saw_content_transfer_encoding; |
124 |
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int saw_user_agent; |
125 |
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int noheader; |
126 |
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} msg; |
127 |
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128 |
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struct { |
129 |
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uint quote; |
130 |
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uint comment; |
131 |
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uint esc; |
132 |
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uint brackets; |
133 |
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size_t wpos; |
134 |
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char buf[SMTP_LINELEN]; |
135 |
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} pstate; |
136 |
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137 |
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static void |
138 |
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qp_encoded_write(FILE *fp, char *buf, size_t len) |
139 |
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{ |
140 |
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while (len) { |
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if (*buf == '=') |
142 |
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fprintf(fp, "=3D"); |
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else if (*buf == ' ' || *buf == '\t') { |
144 |
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char *p = buf; |
145 |
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146 |
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while (*p != '\n') { |
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if (*p != ' ' && *p != '\t') |
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break; |
149 |
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p++; |
150 |
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} |
151 |
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if (*p == '\n') |
152 |
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fprintf(fp, "=%2X", *buf & 0xff); |
153 |
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else |
154 |
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fprintf(fp, "%c", *buf & 0xff); |
155 |
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} |
156 |
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else if (!isprint((unsigned char)*buf) && *buf != '\n') |
157 |
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fprintf(fp, "=%2X", *buf & 0xff); |
158 |
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else |
159 |
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fprintf(fp, "%c", *buf); |
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buf++; |
161 |
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len--; |
162 |
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} |
163 |
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} |
164 |
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165 |
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int |
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enqueue(int argc, char *argv[], FILE *ofp) |
167 |
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{ |
168 |
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int i, ch, tflag = 0; |
169 |
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char *fake_from = NULL, *buf = NULL; |
170 |
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struct passwd *pw; |
171 |
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FILE *fp = NULL, *fout; |
172 |
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size_t sz = 0, envid_sz = 0; |
173 |
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ssize_t len; |
174 |
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int fd; |
175 |
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char sfn[] = "/tmp/smtpd.XXXXXXXXXX"; |
176 |
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char *line; |
177 |
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int dotted; |
178 |
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int inheaders = 1; |
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int save_argc; |
180 |
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char **save_argv; |
181 |
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int no_getlogin = 0; |
182 |
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183 |
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memset(&msg, 0, sizeof(msg)); |
184 |
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time(×tamp); |
185 |
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186 |
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save_argc = argc; |
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save_argv = argv; |
188 |
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189 |
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while ((ch = getopt(argc, argv, |
190 |
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"A:B:b:E::e:F:f:iJ::L:mN:o:p:qr:R:StvV:x")) != -1) { |
191 |
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switch (ch) { |
192 |
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case 'f': |
193 |
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fake_from = optarg; |
194 |
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break; |
195 |
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case 'F': |
196 |
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msg.fromname = optarg; |
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break; |
198 |
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case 'N': |
199 |
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msg.dsn_notify = optarg; |
200 |
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break; |
201 |
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case 'r': |
202 |
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fake_from = optarg; |
203 |
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break; |
204 |
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case 'R': |
205 |
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msg.dsn_ret = optarg; |
206 |
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break; |
207 |
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case 'S': |
208 |
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no_getlogin = 1; |
209 |
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break; |
210 |
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case 't': |
211 |
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tflag = 1; |
212 |
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break; |
213 |
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case 'v': |
214 |
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verbose = 1; |
215 |
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break; |
216 |
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case 'V': |
217 |
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msg.dsn_envid = optarg; |
218 |
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break; |
219 |
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/* all remaining: ignored, sendmail compat */ |
220 |
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case 'A': |
221 |
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case 'B': |
222 |
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case 'b': |
223 |
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case 'E': |
224 |
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case 'e': |
225 |
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case 'i': |
226 |
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case 'L': |
227 |
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case 'm': |
228 |
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case 'o': |
229 |
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case 'p': |
230 |
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case 'x': |
231 |
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break; |
232 |
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case 'q': |
233 |
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/* XXX: implement "process all now" */ |
234 |
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return (EX_SOFTWARE); |
235 |
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default: |
236 |
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usage(); |
237 |
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} |
238 |
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} |
239 |
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240 |
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argc -= optind; |
241 |
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argv += optind; |
242 |
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243 |
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if (getmailname(host, sizeof(host)) == -1) |
244 |
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errx(EX_NOHOST, "getmailname"); |
245 |
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if (no_getlogin) { |
246 |
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if ((pw = getpwuid(getuid())) == NULL) |
247 |
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user = "anonymous"; |
248 |
|
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if (pw != NULL) |
249 |
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user = xstrdup(pw->pw_name, "enqueue"); |
250 |
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} |
251 |
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else { |
252 |
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uid_t ruid = getuid(); |
253 |
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|
254 |
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if ((user = getlogin()) != NULL && *user != '\0') { |
255 |
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if ((pw = getpwnam(user)) == NULL || |
256 |
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(ruid != 0 && ruid != pw->pw_uid)) |
257 |
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pw = getpwuid(ruid); |
258 |
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} else if ((pw = getpwuid(ruid)) == NULL) { |
259 |
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user = "anonymous"; |
260 |
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} |
261 |
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user = xstrdup(pw ? pw->pw_name : user, "enqueue"); |
262 |
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} |
263 |
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264 |
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build_from(fake_from, pw); |
265 |
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|
266 |
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while (argc > 0) { |
267 |
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rcpt_add(argv[0]); |
268 |
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argv++; |
269 |
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argc--; |
270 |
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|
} |
271 |
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|
272 |
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if ((fd = mkstemp(sfn)) == -1 || |
273 |
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(fp = fdopen(fd, "w+")) == NULL) { |
274 |
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int saved_errno = errno; |
275 |
|
|
if (fd != -1) { |
276 |
|
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unlink(sfn); |
277 |
|
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close(fd); |
278 |
|
|
} |
279 |
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errc(EX_UNAVAILABLE, saved_errno, "mkstemp"); |
280 |
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} |
281 |
|
|
unlink(sfn); |
282 |
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msg.noheader = parse_message(stdin, fake_from == NULL, tflag, fp); |
283 |
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|
284 |
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if (msg.rcpt_cnt == 0) |
285 |
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errx(EX_SOFTWARE, "no recipients"); |
286 |
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|
|
287 |
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|
/* init session */ |
288 |
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rewind(fp); |
289 |
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|
290 |
|
|
/* check if working in offline mode */ |
291 |
|
|
/* If the server is not running, enqueue the message offline */ |
292 |
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|
|
293 |
|
|
if (!srv_connected()) { |
294 |
|
|
if (pledge("stdio flock rpath cpath wpath", NULL) == -1) |
295 |
|
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err(1, "pledge"); |
296 |
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|
297 |
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return (enqueue_offline(save_argc, save_argv, fp, ofp)); |
298 |
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} |
299 |
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|
300 |
|
|
if ((msg.fd = open_connection()) == -1) |
301 |
|
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errx(EX_UNAVAILABLE, "server too busy"); |
302 |
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|
|
303 |
|
|
if (pledge("stdio wpath cpath flock rpath", NULL) == -1) |
304 |
|
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err(1, "pledge"); |
305 |
|
|
|
306 |
|
|
fout = fdopen(msg.fd, "a+"); |
307 |
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if (fout == NULL) |
308 |
|
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err(EX_UNAVAILABLE, "fdopen"); |
309 |
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|
|
310 |
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/* |
311 |
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* We need to call get_responses after every command because we don't |
312 |
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* support PIPELINING on the server-side yet. |
313 |
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*/ |
314 |
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|
315 |
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/* banner */ |
316 |
|
|
if (!get_responses(fout, 1)) |
317 |
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|
goto fail; |
318 |
|
|
|
319 |
|
|
if (!send_line(fout, verbose, "EHLO localhost\n")) |
320 |
|
|
goto fail; |
321 |
|
|
if (!get_responses(fout, 1)) |
322 |
|
|
goto fail; |
323 |
|
|
|
324 |
|
|
if (msg.dsn_envid != NULL) |
325 |
|
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envid_sz = strlen(msg.dsn_envid); |
326 |
|
|
|
327 |
|
|
if (!send_line(fout, verbose, "MAIL FROM:<%s> %s%s %s%s\n", |
328 |
|
|
msg.from, |
329 |
|
|
msg.dsn_ret ? "RET=" : "", |
330 |
|
|
msg.dsn_ret ? msg.dsn_ret : "", |
331 |
|
|
envid_sz ? "ENVID=" : "", |
332 |
|
|
envid_sz ? msg.dsn_envid : "")) |
333 |
|
|
goto fail; |
334 |
|
|
if (!get_responses(fout, 1)) |
335 |
|
|
goto fail; |
336 |
|
|
|
337 |
|
|
for (i = 0; i < msg.rcpt_cnt; i++) { |
338 |
|
|
if (!send_line(fout, verbose, "RCPT TO:<%s> %s%s\n", |
339 |
|
|
msg.rcpts[i], |
340 |
|
|
msg.dsn_notify ? "NOTIFY=" : "", |
341 |
|
|
msg.dsn_notify ? msg.dsn_notify : "")) |
342 |
|
|
goto fail; |
343 |
|
|
if (!get_responses(fout, 1)) |
344 |
|
|
goto fail; |
345 |
|
|
} |
346 |
|
|
|
347 |
|
|
if (!send_line(fout, verbose, "DATA\n")) |
348 |
|
|
goto fail; |
349 |
|
|
if (!get_responses(fout, 1)) |
350 |
|
|
goto fail; |
351 |
|
|
|
352 |
|
|
/* add From */ |
353 |
|
|
if (!msg.saw_from && !send_line(fout, 0, "From: %s%s<%s>\n", |
354 |
|
|
msg.fromname ? msg.fromname : "", msg.fromname ? " " : "", |
355 |
|
|
msg.from)) |
356 |
|
|
goto fail; |
357 |
|
|
|
358 |
|
|
/* add Date */ |
359 |
|
|
if (!msg.saw_date && !send_line(fout, 0, "Date: %s\n", |
360 |
|
|
time_to_text(timestamp))) |
361 |
|
|
goto fail; |
362 |
|
|
|
363 |
|
|
if (msg.need_linesplit) { |
364 |
|
|
/* we will always need to mime encode for long lines */ |
365 |
|
|
if (!msg.saw_mime_version && !send_line(fout, 0, |
366 |
|
|
"MIME-Version: 1.0\n")) |
367 |
|
|
goto fail; |
368 |
|
|
if (!msg.saw_content_type && !send_line(fout, 0, |
369 |
|
|
"Content-Type: text/plain; charset=unknown-8bit\n")) |
370 |
|
|
goto fail; |
371 |
|
|
if (!msg.saw_content_disposition && !send_line(fout, 0, |
372 |
|
|
"Content-Disposition: inline\n")) |
373 |
|
|
goto fail; |
374 |
|
|
if (!msg.saw_content_transfer_encoding && !send_line(fout, 0, |
375 |
|
|
"Content-Transfer-Encoding: quoted-printable\n")) |
376 |
|
|
goto fail; |
377 |
|
|
} |
378 |
|
|
|
379 |
|
|
/* add separating newline */ |
380 |
|
|
if (msg.noheader) { |
381 |
|
|
if (!send_line(fout, 0, "\n")) |
382 |
|
|
goto fail; |
383 |
|
|
inheaders = 0; |
384 |
|
|
} |
385 |
|
|
|
386 |
|
|
for (;;) { |
387 |
|
|
if ((len = getline(&buf, &sz, fp)) == -1) { |
388 |
|
|
if (feof(fp)) |
389 |
|
|
break; |
390 |
|
|
else |
391 |
|
|
err(EX_UNAVAILABLE, "getline"); |
392 |
|
|
} |
393 |
|
|
|
394 |
|
|
/* newlines have been normalized on first parsing */ |
395 |
|
|
if (buf[len-1] != '\n') |
396 |
|
|
errx(EX_SOFTWARE, "expect EOL"); |
397 |
|
|
|
398 |
|
|
dotted = 0; |
399 |
|
|
if (buf[0] == '.') { |
400 |
|
|
if (fputc('.', fout) == EOF) |
401 |
|
|
goto fail; |
402 |
|
|
dotted = 1; |
403 |
|
|
} |
404 |
|
|
|
405 |
|
|
line = buf; |
406 |
|
|
|
407 |
|
|
if (inheaders) { |
408 |
|
|
if (strncasecmp("from ", line, 5) == 0) |
409 |
|
|
continue; |
410 |
|
|
if (strncasecmp("return-path: ", line, 13) == 0) |
411 |
|
|
continue; |
412 |
|
|
} |
413 |
|
|
|
414 |
|
|
if (msg.saw_content_transfer_encoding || msg.noheader || |
415 |
|
|
inheaders || !msg.need_linesplit) { |
416 |
|
|
if (!send_line(fout, 0, "%.*s", (int)len, line)) |
417 |
|
|
goto fail; |
418 |
|
|
if (inheaders && buf[0] == '\n') |
419 |
|
|
inheaders = 0; |
420 |
|
|
continue; |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
/* we don't have a content transfer encoding, use our default */ |
424 |
|
|
do { |
425 |
|
|
if (len < LINESPLIT) { |
426 |
|
|
qp_encoded_write(fout, line, len); |
427 |
|
|
break; |
428 |
|
|
} |
429 |
|
|
else { |
430 |
|
|
qp_encoded_write(fout, line, |
431 |
|
|
LINESPLIT - 2 - dotted); |
432 |
|
|
if (!send_line(fout, 0, "=\n")) |
433 |
|
|
goto fail; |
434 |
|
|
line += LINESPLIT - 2 - dotted; |
435 |
|
|
len -= LINESPLIT - 2 - dotted; |
436 |
|
|
} |
437 |
|
|
} while (len); |
438 |
|
|
} |
439 |
|
|
free(buf); |
440 |
|
|
if (!send_line(fout, verbose, ".\n")) |
441 |
|
|
goto fail; |
442 |
|
|
if (!get_responses(fout, 1)) |
443 |
|
|
goto fail; |
444 |
|
|
|
445 |
|
|
if (!send_line(fout, verbose, "QUIT\n")) |
446 |
|
|
goto fail; |
447 |
|
|
if (!get_responses(fout, 1)) |
448 |
|
|
goto fail; |
449 |
|
|
|
450 |
|
|
fclose(fp); |
451 |
|
|
fclose(fout); |
452 |
|
|
|
453 |
|
|
exit(EX_OK); |
454 |
|
|
|
455 |
|
|
fail: |
456 |
|
|
if (pw) |
457 |
|
|
savedeadletter(pw, fp); |
458 |
|
|
exit(EX_SOFTWARE); |
459 |
|
|
} |
460 |
|
|
|
461 |
|
|
static int |
462 |
|
|
get_responses(FILE *fin, int n) |
463 |
|
|
{ |
464 |
|
|
char *buf = NULL; |
465 |
|
|
size_t sz = 0; |
466 |
|
|
ssize_t len; |
467 |
|
|
int e, ret = 0; |
468 |
|
|
|
469 |
|
|
fflush(fin); |
470 |
|
|
if ((e = ferror(fin))) { |
471 |
|
|
warnx("ferror: %d", e); |
472 |
|
|
goto err; |
473 |
|
|
} |
474 |
|
|
|
475 |
|
|
while (n) { |
476 |
|
|
if ((len = getline(&buf, &sz, fin)) == -1) { |
477 |
|
|
if (ferror(fin)) { |
478 |
|
|
warn("getline"); |
479 |
|
|
goto err; |
480 |
|
|
} else if (feof(fin)) |
481 |
|
|
break; |
482 |
|
|
else |
483 |
|
|
err(EX_UNAVAILABLE, "getline"); |
484 |
|
|
} |
485 |
|
|
|
486 |
|
|
/* account for \r\n linebreaks */ |
487 |
|
|
if (len >= 2 && buf[len - 2] == '\r' && buf[len - 1] == '\n') |
488 |
|
|
buf[--len - 1] = '\n'; |
489 |
|
|
|
490 |
|
|
if (len < 4) { |
491 |
|
|
warnx("bad response"); |
492 |
|
|
goto err; |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
if (verbose) |
496 |
|
|
printf("<<< %.*s", (int)len, buf); |
497 |
|
|
|
498 |
|
|
if (buf[3] == '-') |
499 |
|
|
continue; |
500 |
|
|
if (buf[0] != '2' && buf[0] != '3') { |
501 |
|
|
warnx("command failed: %.*s", (int)len, buf); |
502 |
|
|
goto err; |
503 |
|
|
} |
504 |
|
|
n--; |
505 |
|
|
} |
506 |
|
|
|
507 |
|
|
ret = 1; |
508 |
|
|
err: |
509 |
|
|
free(buf); |
510 |
|
|
return ret; |
511 |
|
|
} |
512 |
|
|
|
513 |
|
|
static int |
514 |
|
|
send_line(FILE *fp, int v, char *fmt, ...) |
515 |
|
|
{ |
516 |
|
|
int ret = 0; |
517 |
|
|
va_list ap; |
518 |
|
|
|
519 |
|
|
va_start(ap, fmt); |
520 |
|
|
if (vfprintf(fp, fmt, ap) >= 0) |
521 |
|
|
ret = 1; |
522 |
|
|
va_end(ap); |
523 |
|
|
|
524 |
|
|
if (ret && v) { |
525 |
|
|
printf(">>> "); |
526 |
|
|
va_start(ap, fmt); |
527 |
|
|
vprintf(fmt, ap); |
528 |
|
|
va_end(ap); |
529 |
|
|
} |
530 |
|
|
|
531 |
|
|
return (ret); |
532 |
|
|
} |
533 |
|
|
|
534 |
|
|
static void |
535 |
|
|
build_from(char *fake_from, struct passwd *pw) |
536 |
|
|
{ |
537 |
|
|
char *p; |
538 |
|
|
|
539 |
|
|
if (fake_from == NULL) |
540 |
|
|
msg.from = qualify_addr(user); |
541 |
|
|
else { |
542 |
|
|
if (fake_from[0] == '<') { |
543 |
|
|
if (fake_from[strlen(fake_from) - 1] != '>') |
544 |
|
|
errx(1, "leading < but no trailing >"); |
545 |
|
|
fake_from[strlen(fake_from) - 1] = 0; |
546 |
|
|
p = xstrdup(fake_from + 1, "build_from"); |
547 |
|
|
|
548 |
|
|
msg.from = qualify_addr(p); |
549 |
|
|
free(p); |
550 |
|
|
} else |
551 |
|
|
msg.from = qualify_addr(fake_from); |
552 |
|
|
} |
553 |
|
|
|
554 |
|
|
if (msg.fromname == NULL && fake_from == NULL && pw != NULL) { |
555 |
|
|
int len, apos; |
556 |
|
|
|
557 |
|
|
len = strcspn(pw->pw_gecos, ","); |
558 |
|
|
if ((p = memchr(pw->pw_gecos, '&', len))) { |
559 |
|
|
apos = p - pw->pw_gecos; |
560 |
|
|
if (asprintf(&msg.fromname, "%.*s%s%.*s", |
561 |
|
|
apos, pw->pw_gecos, |
562 |
|
|
pw->pw_name, |
563 |
|
|
len - apos - 1, p + 1) == -1) |
564 |
|
|
err(1, NULL); |
565 |
|
|
msg.fromname[apos] = toupper((unsigned char)msg.fromname[apos]); |
566 |
|
|
} else { |
567 |
|
|
if (asprintf(&msg.fromname, "%.*s", len, |
568 |
|
|
pw->pw_gecos) == -1) |
569 |
|
|
err(1, NULL); |
570 |
|
|
} |
571 |
|
|
} |
572 |
|
|
} |
573 |
|
|
|
574 |
|
|
static int |
575 |
|
|
parse_message(FILE *fin, int get_from, int tflag, FILE *fout) |
576 |
|
|
{ |
577 |
|
|
char *buf = NULL; |
578 |
|
|
size_t sz = 0; |
579 |
|
|
ssize_t len; |
580 |
|
|
uint i, cur = HDR_NONE; |
581 |
|
|
uint header_seen = 0, header_done = 0; |
582 |
|
|
|
583 |
|
|
memset(&pstate, 0, sizeof(pstate)); |
584 |
|
|
for (;;) { |
585 |
|
|
if ((len = getline(&buf, &sz, fin)) == -1) { |
586 |
|
|
if (feof(fin)) |
587 |
|
|
break; |
588 |
|
|
else |
589 |
|
|
err(EX_UNAVAILABLE, "getline"); |
590 |
|
|
} |
591 |
|
|
|
592 |
|
|
/* account for \r\n linebreaks */ |
593 |
|
|
if (len >= 2 && buf[len - 2] == '\r' && buf[len - 1] == '\n') |
594 |
|
|
buf[--len - 1] = '\n'; |
595 |
|
|
|
596 |
|
|
if (len == 1 && buf[0] == '\n') /* end of header */ |
597 |
|
|
header_done = 1; |
598 |
|
|
|
599 |
|
|
if (!WSP(buf[0])) { /* whitespace -> continuation */ |
600 |
|
|
if (cur == HDR_FROM) |
601 |
|
|
parse_addr_terminal(1); |
602 |
|
|
if (cur == HDR_TO || cur == HDR_CC || cur == HDR_BCC) |
603 |
|
|
parse_addr_terminal(0); |
604 |
|
|
cur = HDR_NONE; |
605 |
|
|
} |
606 |
|
|
|
607 |
|
|
/* not really exact, if we are still in headers */ |
608 |
|
|
if (len + (buf[len - 1] == '\n' ? 0 : 1) >= LINESPLIT) |
609 |
|
|
msg.need_linesplit = 1; |
610 |
|
|
|
611 |
|
|
for (i = 0; !header_done && cur == HDR_NONE && |
612 |
|
|
i < nitems(keywords); i++) |
613 |
|
|
if ((size_t)len > strlen(keywords[i].word) && |
614 |
|
|
!strncasecmp(buf, keywords[i].word, |
615 |
|
|
strlen(keywords[i].word))) |
616 |
|
|
cur = keywords[i].type; |
617 |
|
|
|
618 |
|
|
if (cur != HDR_NONE) |
619 |
|
|
header_seen = 1; |
620 |
|
|
|
621 |
|
|
if (cur != HDR_BCC) { |
622 |
|
|
if (!send_line(fout, 0, "%.*s", (int)len, buf)) |
623 |
|
|
err(1, "write error"); |
624 |
|
|
if (buf[len - 1] != '\n') { |
625 |
|
|
if (fputc('\n', fout) == EOF) |
626 |
|
|
err(1, "write error"); |
627 |
|
|
} |
628 |
|
|
} |
629 |
|
|
|
630 |
|
|
/* |
631 |
|
|
* using From: as envelope sender is not sendmail compatible, |
632 |
|
|
* but I really want it that way - maybe needs a knob |
633 |
|
|
*/ |
634 |
|
|
if (cur == HDR_FROM) { |
635 |
|
|
msg.saw_from++; |
636 |
|
|
if (get_from) |
637 |
|
|
parse_addr(buf, len, 1); |
638 |
|
|
} |
639 |
|
|
|
640 |
|
|
if (tflag && (cur == HDR_TO || cur == HDR_CC || cur == HDR_BCC)) |
641 |
|
|
parse_addr(buf, len, 0); |
642 |
|
|
|
643 |
|
|
if (cur == HDR_DATE) |
644 |
|
|
msg.saw_date++; |
645 |
|
|
if (cur == HDR_MSGID) |
646 |
|
|
msg.saw_msgid++; |
647 |
|
|
if (cur == HDR_MIME_VERSION) |
648 |
|
|
msg.saw_mime_version = 1; |
649 |
|
|
if (cur == HDR_CONTENT_TYPE) |
650 |
|
|
msg.saw_content_type = 1; |
651 |
|
|
if (cur == HDR_CONTENT_DISPOSITION) |
652 |
|
|
msg.saw_content_disposition = 1; |
653 |
|
|
if (cur == HDR_CONTENT_TRANSFER_ENCODING) |
654 |
|
|
msg.saw_content_transfer_encoding = 1; |
655 |
|
|
if (cur == HDR_USER_AGENT) |
656 |
|
|
msg.saw_user_agent = 1; |
657 |
|
|
} |
658 |
|
|
|
659 |
|
|
free(buf); |
660 |
|
|
return (!header_seen); |
661 |
|
|
} |
662 |
|
|
|
663 |
|
|
static void |
664 |
|
|
parse_addr(char *s, size_t len, int is_from) |
665 |
|
|
{ |
666 |
|
|
size_t pos = 0; |
667 |
|
|
int terminal = 0; |
668 |
|
|
|
669 |
|
|
/* unless this is a continuation... */ |
670 |
|
|
if (!WSP(s[pos]) && s[pos] != ',' && s[pos] != ';') { |
671 |
|
|
/* ... skip over everything before the ':' */ |
672 |
|
|
for (; pos < len && s[pos] != ':'; pos++) |
673 |
|
|
; /* nothing */ |
674 |
|
|
/* ... and check & reset parser state */ |
675 |
|
|
parse_addr_terminal(is_from); |
676 |
|
|
} |
677 |
|
|
|
678 |
|
|
/* skip over ':' ',' ';' and whitespace */ |
679 |
|
|
for (; pos < len && !pstate.quote && (WSP(s[pos]) || s[pos] == ':' || |
680 |
|
|
s[pos] == ',' || s[pos] == ';'); pos++) |
681 |
|
|
; /* nothing */ |
682 |
|
|
|
683 |
|
|
for (; pos < len; pos++) { |
684 |
|
|
if (!pstate.esc && !pstate.quote && s[pos] == '(') |
685 |
|
|
pstate.comment++; |
686 |
|
|
if (!pstate.comment && !pstate.esc && s[pos] == '"') |
687 |
|
|
pstate.quote = !pstate.quote; |
688 |
|
|
|
689 |
|
|
if (!pstate.comment && !pstate.quote && !pstate.esc) { |
690 |
|
|
if (s[pos] == ':') { /* group */ |
691 |
|
|
for (pos++; pos < len && WSP(s[pos]); pos++) |
692 |
|
|
; /* nothing */ |
693 |
|
|
pstate.wpos = 0; |
694 |
|
|
} |
695 |
|
|
if (s[pos] == '\n' || s[pos] == '\r') |
696 |
|
|
break; |
697 |
|
|
if (s[pos] == ',' || s[pos] == ';') { |
698 |
|
|
terminal = 1; |
699 |
|
|
break; |
700 |
|
|
} |
701 |
|
|
if (s[pos] == '<') { |
702 |
|
|
pstate.brackets = 1; |
703 |
|
|
pstate.wpos = 0; |
704 |
|
|
} |
705 |
|
|
if (pstate.brackets && s[pos] == '>') |
706 |
|
|
terminal = 1; |
707 |
|
|
} |
708 |
|
|
|
709 |
|
|
if (!pstate.comment && !terminal && (!(!(pstate.quote || |
710 |
|
|
pstate.esc) && (s[pos] == '<' || WSP(s[pos]))))) { |
711 |
|
|
if (pstate.wpos >= sizeof(pstate.buf)) |
712 |
|
|
errx(1, "address exceeds buffer size"); |
713 |
|
|
pstate.buf[pstate.wpos++] = s[pos]; |
714 |
|
|
} |
715 |
|
|
|
716 |
|
|
if (!pstate.quote && pstate.comment && s[pos] == ')') |
717 |
|
|
pstate.comment--; |
718 |
|
|
|
719 |
|
|
if (!pstate.esc && !pstate.comment && !pstate.quote && |
720 |
|
|
s[pos] == '\\') |
721 |
|
|
pstate.esc = 1; |
722 |
|
|
else |
723 |
|
|
pstate.esc = 0; |
724 |
|
|
} |
725 |
|
|
|
726 |
|
|
if (terminal) |
727 |
|
|
parse_addr_terminal(is_from); |
728 |
|
|
|
729 |
|
|
for (; pos < len && (s[pos] == '\r' || s[pos] == '\n'); pos++) |
730 |
|
|
; /* nothing */ |
731 |
|
|
|
732 |
|
|
if (pos < len) |
733 |
|
|
parse_addr(s + pos, len - pos, is_from); |
734 |
|
|
} |
735 |
|
|
|
736 |
|
|
static void |
737 |
|
|
parse_addr_terminal(int is_from) |
738 |
|
|
{ |
739 |
|
|
if (pstate.comment || pstate.quote || pstate.esc) |
740 |
|
|
errx(1, "syntax error in address"); |
741 |
|
|
if (pstate.wpos) { |
742 |
|
|
if (pstate.wpos >= sizeof(pstate.buf)) |
743 |
|
|
errx(1, "address exceeds buffer size"); |
744 |
|
|
pstate.buf[pstate.wpos] = '\0'; |
745 |
|
|
if (is_from) |
746 |
|
|
msg.from = qualify_addr(pstate.buf); |
747 |
|
|
else |
748 |
|
|
rcpt_add(pstate.buf); |
749 |
|
|
pstate.wpos = 0; |
750 |
|
|
} |
751 |
|
|
} |
752 |
|
|
|
753 |
|
|
static char * |
754 |
|
|
qualify_addr(char *in) |
755 |
|
|
{ |
756 |
|
|
char *out; |
757 |
|
|
|
758 |
|
|
if (strlen(in) > 0 && strchr(in, '@') == NULL) { |
759 |
|
|
if (asprintf(&out, "%s@%s", in, host) == -1) |
760 |
|
|
err(1, "qualify asprintf"); |
761 |
|
|
} else |
762 |
|
|
out = xstrdup(in, "qualify_addr"); |
763 |
|
|
|
764 |
|
|
return (out); |
765 |
|
|
} |
766 |
|
|
|
767 |
|
|
static void |
768 |
|
|
rcpt_add(char *addr) |
769 |
|
|
{ |
770 |
|
|
void *nrcpts; |
771 |
|
|
char *p; |
772 |
|
|
int n; |
773 |
|
|
|
774 |
|
|
n = 1; |
775 |
|
|
p = addr; |
776 |
|
|
while ((p = strchr(p, ',')) != NULL) { |
777 |
|
|
n++; |
778 |
|
|
p++; |
779 |
|
|
} |
780 |
|
|
|
781 |
|
|
if ((nrcpts = reallocarray(msg.rcpts, |
782 |
|
|
msg.rcpt_cnt + n, sizeof(char *))) == NULL) |
783 |
|
|
err(1, "rcpt_add realloc"); |
784 |
|
|
msg.rcpts = nrcpts; |
785 |
|
|
|
786 |
|
|
while (n--) { |
787 |
|
|
if ((p = strchr(addr, ',')) != NULL) |
788 |
|
|
*p++ = '\0'; |
789 |
|
|
msg.rcpts[msg.rcpt_cnt++] = qualify_addr(addr); |
790 |
|
|
if (p == NULL) |
791 |
|
|
break; |
792 |
|
|
addr = p; |
793 |
|
|
} |
794 |
|
|
} |
795 |
|
|
|
796 |
|
|
static int |
797 |
|
|
open_connection(void) |
798 |
|
|
{ |
799 |
|
|
struct imsg imsg; |
800 |
|
|
int fd; |
801 |
|
|
int n; |
802 |
|
|
|
803 |
|
|
imsg_compose(ibuf, IMSG_CTL_SMTP_SESSION, IMSG_VERSION, 0, -1, NULL, 0); |
804 |
|
|
|
805 |
|
|
while (ibuf->w.queued) |
806 |
|
|
if (msgbuf_write(&ibuf->w) <= 0 && errno != EAGAIN) |
807 |
|
|
err(1, "write error"); |
808 |
|
|
|
809 |
|
|
while (1) { |
810 |
|
|
if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN) |
811 |
|
|
errx(1, "imsg_read error"); |
812 |
|
|
if (n == 0) |
813 |
|
|
errx(1, "pipe closed"); |
814 |
|
|
|
815 |
|
|
if ((n = imsg_get(ibuf, &imsg)) == -1) |
816 |
|
|
errx(1, "imsg_get error"); |
817 |
|
|
if (n == 0) |
818 |
|
|
continue; |
819 |
|
|
|
820 |
|
|
switch (imsg.hdr.type) { |
821 |
|
|
case IMSG_CTL_OK: |
822 |
|
|
break; |
823 |
|
|
case IMSG_CTL_FAIL: |
824 |
|
|
errx(1, "server disallowed submission request"); |
825 |
|
|
default: |
826 |
|
|
errx(1, "unexpected imsg reply type"); |
827 |
|
|
} |
828 |
|
|
|
829 |
|
|
fd = imsg.fd; |
830 |
|
|
imsg_free(&imsg); |
831 |
|
|
|
832 |
|
|
break; |
833 |
|
|
} |
834 |
|
|
|
835 |
|
|
return fd; |
836 |
|
|
} |
837 |
|
|
|
838 |
|
|
static int |
839 |
|
|
enqueue_offline(int argc, char *argv[], FILE *ifile, FILE *ofile) |
840 |
|
|
{ |
841 |
|
|
int i, ch; |
842 |
|
|
|
843 |
|
|
for (i = 1; i < argc; i++) { |
844 |
|
|
if (strchr(argv[i], '|') != NULL) { |
845 |
|
|
warnx("%s contains illegal character", argv[i]); |
846 |
|
|
ftruncate(fileno(ofile), 0); |
847 |
|
|
exit(EX_SOFTWARE); |
848 |
|
|
} |
849 |
|
|
if (fprintf(ofile, "%s%s", i == 1 ? "" : "|", argv[i]) < 0) |
850 |
|
|
goto write_error; |
851 |
|
|
} |
852 |
|
|
|
853 |
|
|
if (fputc('\n', ofile) == EOF) |
854 |
|
|
goto write_error; |
855 |
|
|
|
856 |
|
|
while ((ch = fgetc(ifile)) != EOF) { |
857 |
|
|
if (fputc(ch, ofile) == EOF) |
858 |
|
|
goto write_error; |
859 |
|
|
} |
860 |
|
|
|
861 |
|
|
if (ferror(ifile)) { |
862 |
|
|
warn("read error"); |
863 |
|
|
ftruncate(fileno(ofile), 0); |
864 |
|
|
exit(EX_UNAVAILABLE); |
865 |
|
|
} |
866 |
|
|
|
867 |
|
|
if (fclose(ofile) == EOF) |
868 |
|
|
goto write_error; |
869 |
|
|
|
870 |
|
|
return (EX_TEMPFAIL); |
871 |
|
|
write_error: |
872 |
|
|
warn("write error"); |
873 |
|
|
ftruncate(fileno(ofile), 0); |
874 |
|
|
exit(EX_UNAVAILABLE); |
875 |
|
|
} |
876 |
|
|
|
877 |
|
|
static int |
878 |
|
|
savedeadletter(struct passwd *pw, FILE *in) |
879 |
|
|
{ |
880 |
|
|
char buffer[PATH_MAX]; |
881 |
|
|
FILE *fp; |
882 |
|
|
char *buf = NULL; |
883 |
|
|
size_t sz = 0; |
884 |
|
|
ssize_t len; |
885 |
|
|
|
886 |
|
|
(void)snprintf(buffer, sizeof buffer, "%s/dead.letter", pw->pw_dir); |
887 |
|
|
|
888 |
|
|
if (fseek(in, 0, SEEK_SET) != 0) |
889 |
|
|
return 0; |
890 |
|
|
|
891 |
|
|
if ((fp = fopen(buffer, "w")) == NULL) |
892 |
|
|
return 0; |
893 |
|
|
|
894 |
|
|
/* add From */ |
895 |
|
|
if (!msg.saw_from) |
896 |
|
|
fprintf(fp, "From: %s%s<%s>\n", |
897 |
|
|
msg.fromname ? msg.fromname : "", |
898 |
|
|
msg.fromname ? " " : "", |
899 |
|
|
msg.from); |
900 |
|
|
|
901 |
|
|
/* add Date */ |
902 |
|
|
if (!msg.saw_date) |
903 |
|
|
fprintf(fp, "Date: %s\n", time_to_text(timestamp)); |
904 |
|
|
|
905 |
|
|
if (msg.need_linesplit) { |
906 |
|
|
/* we will always need to mime encode for long lines */ |
907 |
|
|
if (!msg.saw_mime_version) |
908 |
|
|
fprintf(fp, "MIME-Version: 1.0\n"); |
909 |
|
|
if (!msg.saw_content_type) |
910 |
|
|
fprintf(fp, "Content-Type: text/plain; " |
911 |
|
|
"charset=unknown-8bit\n"); |
912 |
|
|
if (!msg.saw_content_disposition) |
913 |
|
|
fprintf(fp, "Content-Disposition: inline\n"); |
914 |
|
|
if (!msg.saw_content_transfer_encoding) |
915 |
|
|
fprintf(fp, "Content-Transfer-Encoding: " |
916 |
|
|
"quoted-printable\n"); |
917 |
|
|
} |
918 |
|
|
|
919 |
|
|
/* add separating newline */ |
920 |
|
|
if (msg.noheader) |
921 |
|
|
fprintf(fp, "\n"); |
922 |
|
|
|
923 |
|
|
while ((len = getline(&buf, &sz, in)) != -1) { |
924 |
|
|
if (buf[len - 1] == '\n') |
925 |
|
|
buf[len - 1] = '\0'; |
926 |
|
|
fprintf(fp, "%s\n", buf); |
927 |
|
|
} |
928 |
|
|
|
929 |
|
|
free(buf); |
930 |
|
|
fprintf(fp, "\n"); |
931 |
|
|
fclose(fp); |
932 |
|
|
return 1; |
933 |
|
|
} |