2 15cacd92 2019-03-29 martijn * Copyright (c) 2019 Martijn van Duren <martijn@openbsd.org>
4 15cacd92 2019-03-29 martijn * Permission to use, copy, modify, and distribute this software for any
5 15cacd92 2019-03-29 martijn * purpose with or without fee is hereby granted, provided that the above
6 15cacd92 2019-03-29 martijn * copyright notice and this permission notice appear in all copies.
8 15cacd92 2019-03-29 martijn * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 15cacd92 2019-03-29 martijn * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 15cacd92 2019-03-29 martijn * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 15cacd92 2019-03-29 martijn * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 15cacd92 2019-03-29 martijn * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 15cacd92 2019-03-29 martijn * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 15cacd92 2019-03-29 martijn * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 a248a3c1 2019-03-27 martijn #include <sys/time.h>
17 a248a3c1 2019-03-27 martijn #include <sys/socket.h>
19 a248a3c1 2019-03-27 martijn #include <arpa/inet.h>
20 a248a3c1 2019-03-27 martijn #include <errno.h>
21 eaefb262 2019-03-27 martijn #include <event.h>
22 eaefb262 2019-03-27 martijn #include <fcntl.h>
23 a248a3c1 2019-03-27 martijn #include <inttypes.h>
24 57cbfccc 2019-03-27 martijn #include <stdarg.h>
25 a248a3c1 2019-03-27 martijn #include <stdio.h>
26 a248a3c1 2019-03-27 martijn #include <stdlib.h>
27 a248a3c1 2019-03-27 martijn #include <string.h>
28 b633fa4c 2019-03-29 martijn #include <syslog.h>
29 eaefb262 2019-03-27 martijn #include <unistd.h>
31 b633fa4c 2019-03-29 martijn #include "log.h"
32 a248a3c1 2019-03-27 martijn #include "smtp_proc.h"
34 a248a3c1 2019-03-27 martijn #define NITEMS(x) (sizeof(x) / sizeof(*x))
36 a248a3c1 2019-03-27 martijn struct smtp_callback;
37 73ac3ec1 2019-03-27 martijn struct smtp_request;
39 c6714f66 2019-04-01 martijn extern struct event_base *current_base;
41 03a6f52a 2019-03-29 martijn static int smtp_register(char *, char *, char *, void *);
42 6bf2fad2 2019-03-29 martijn static ssize_t smtp_getline(char ** restrict, size_t * restrict);
43 eaefb262 2019-03-27 martijn static void smtp_newline(int, short, void *);
44 42a4c512 2019-03-28 martijn static void smtp_connect(struct smtp_callback *, int, struct timespec *,
45 42a4c512 2019-03-28 martijn uint64_t, uint64_t, char *);
46 a28aed52 2019-03-31 martijn static void smtp_data(struct smtp_callback *, int, struct timespec *,
47 a28aed52 2019-03-31 martijn uint64_t, uint64_t, char *);
48 02090eee 2019-03-29 martijn static void smtp_dataline(struct smtp_callback *, int, struct timespec *,
49 02090eee 2019-03-29 martijn uint64_t, uint64_t, char *);
50 47628d21 2019-03-29 martijn static void smtp_in_link_disconnect(struct smtp_callback *, int, struct timespec *,
51 47628d21 2019-03-29 martijn uint64_t, char *);
52 a211223d 2019-04-01 martijn static void smtp_printf(const char *, ...)
53 a211223d 2019-04-01 martijn __attribute__((__format__ (printf, 1, 2)));
54 a211223d 2019-04-01 martijn static void smtp_vprintf(const char *, va_list);
55 a211223d 2019-04-01 martijn static void smtp_write(int, short, void *);
57 a211223d 2019-04-01 martijn struct smtp_writebuf {
58 a211223d 2019-04-01 martijn char *buf;
59 a211223d 2019-04-01 martijn size_t bufsize;
60 a211223d 2019-04-01 martijn size_t buflen;
63 a248a3c1 2019-03-27 martijn struct smtp_callback {
64 a248a3c1 2019-03-27 martijn char *type;
65 a248a3c1 2019-03-27 martijn char *phase;
66 a248a3c1 2019-03-27 martijn char *direction;
68 47628d21 2019-03-29 martijn void (*smtp_filter)(struct smtp_callback *, int,
69 47628d21 2019-03-29 martijn struct timespec *, uint64_t, uint64_t, char *);
70 47628d21 2019-03-29 martijn void (*smtp_report)(struct smtp_callback *, int,
71 47628d21 2019-03-29 martijn struct timespec *, uint64_t, char *);
73 03a6f52a 2019-03-29 martijn void *cb;
74 a248a3c1 2019-03-27 martijn } smtp_callbacks[] = {
75 47628d21 2019-03-29 martijn {"filter", "connect", "smtp-in", .smtp_filter = smtp_connect, NULL},
76 a28aed52 2019-03-31 martijn {"filter", "data", "smtp-in", .smtp_filter = smtp_data, NULL},
77 02090eee 2019-03-29 martijn {"filter", "data-line", "smtp-in", .smtp_filter = smtp_dataline, NULL},
78 47628d21 2019-03-29 martijn {"report", "link-disconnect", "smtp-in",
79 47628d21 2019-03-29 martijn .smtp_report = smtp_in_link_disconnect, NULL}
82 a248a3c1 2019-03-27 martijn static int ready = 0;
85 42a4c512 2019-03-28 martijn smtp_register_filter_connect(void (*cb)(char *, int, struct timespec *, char *,
86 03a6f52a 2019-03-29 martijn char *, uint64_t, uint64_t, char *, struct inx_addr *))
88 03a6f52a 2019-03-29 martijn return smtp_register("filter", "connect", "smtp-in", (void *)cb);
92 a28aed52 2019-03-31 martijn smtp_register_filter_data(void (*cb)(char *, int, struct timespec *, char *,
93 a28aed52 2019-03-31 martijn char *, uint64_t, uint64_t))
95 a28aed52 2019-03-31 martijn return smtp_register("filter", "data", "smtp-in", (void *)cb);
99 02090eee 2019-03-29 martijn smtp_register_filter_dataline(void (*cb)(char *, int, struct timespec *, char *,
100 02090eee 2019-03-29 martijn char *, uint64_t, uint64_t, char *))
102 02090eee 2019-03-29 martijn return smtp_register("filter", "data-line", "smtp-in", (void *)cb);
106 47628d21 2019-03-29 martijn smtp_in_register_report_disconnect(void (*cb)(char *, int, struct timespec *,
107 47628d21 2019-03-29 martijn char *, char *, uint64_t))
109 47628d21 2019-03-29 martijn return smtp_register("report", "link-disconnect", "smtp-in", (void *)cb);
113 b633fa4c 2019-03-29 martijn smtp_run(int debug)
115 eaefb262 2019-03-27 martijn struct event stdinev;
117 a211223d 2019-04-01 martijn smtp_printf("register|ready\n");
118 eaefb262 2019-03-27 martijn ready = 1;
120 b633fa4c 2019-03-29 martijn log_init(debug, LOG_MAIL);
121 eaefb262 2019-03-27 martijn event_set(&stdinev, STDIN_FILENO, EV_READ | EV_PERSIST, smtp_newline,
122 eaefb262 2019-03-27 martijn &stdinev);
123 eaefb262 2019-03-27 martijn event_add(&stdinev, NULL);
125 eaefb262 2019-03-27 martijn if (fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK) == -1)
126 b633fa4c 2019-03-29 martijn fatal("fcntl");
127 eaefb262 2019-03-27 martijn event_dispatch();
130 6bf2fad2 2019-03-29 martijn static ssize_t
131 6bf2fad2 2019-03-29 martijn smtp_getline(char ** restrict buf, size_t * restrict size)
133 6bf2fad2 2019-03-29 martijn static char *rbuf = NULL;
134 6bf2fad2 2019-03-29 martijn static size_t rsoff = 0, reoff = 0;
135 6bf2fad2 2019-03-29 martijn static size_t rbsize = 0;
136 6bf2fad2 2019-03-29 martijn char *sep;
137 6bf2fad2 2019-03-29 martijn size_t sepoff;
138 6bf2fad2 2019-03-29 martijn ssize_t strlen, nread;
141 6bf2fad2 2019-03-29 martijn if (rsoff != reoff) {
142 6bf2fad2 2019-03-29 martijn if ((sep = memchr(rbuf + rsoff, '\n', reoff - rsoff))
143 6bf2fad2 2019-03-29 martijn != NULL) {
144 6bf2fad2 2019-03-29 martijn sepoff = sep - rbuf;
145 6bf2fad2 2019-03-29 martijn if (*buf == NULL)
146 6bf2fad2 2019-03-29 martijn *size = 0;
147 6bf2fad2 2019-03-29 martijn if (*size < (sepoff - rsoff + 1)) {
148 6bf2fad2 2019-03-29 martijn *size = sepoff - rsoff + 1;
149 6bf2fad2 2019-03-29 martijn *buf = realloc(*buf, sepoff - rsoff + 1);
150 6bf2fad2 2019-03-29 martijn if (*buf == NULL)
151 6bf2fad2 2019-03-29 martijn fatal(NULL);
153 6bf2fad2 2019-03-29 martijn sep[0] = '\0';
154 6bf2fad2 2019-03-29 martijn strlen = strlcpy(*buf, rbuf + rsoff, *size);
155 6bf2fad2 2019-03-29 martijn if (strlen >= *size)
156 6bf2fad2 2019-03-29 martijn fatalx("copy buffer too small");
157 6bf2fad2 2019-03-29 martijn rsoff = sepoff + 1;
158 6bf2fad2 2019-03-29 martijn return strlen;
161 4d7575c0 2019-04-03 martijn /* If we can't fill at the end, move everything back. */
162 4d7575c0 2019-04-03 martijn if (rbsize - reoff < 1500 && rsoff != 0) {
163 4d7575c0 2019-04-03 martijn memmove(rbuf, rbuf + rsoff, reoff - rsoff);
164 4d7575c0 2019-04-03 martijn reoff -= rsoff;
165 4d7575c0 2019-04-03 martijn rsoff = 0;
167 4d7575c0 2019-04-03 martijn /* If we still can't fill alloc some new memory. */
168 4d7575c0 2019-04-03 martijn if (rbsize - reoff < 1500) {
169 6bf2fad2 2019-03-29 martijn if ((rbuf = realloc(rbuf, rbsize + 4096)) == NULL)
170 6bf2fad2 2019-03-29 martijn fatal(NULL);
171 6bf2fad2 2019-03-29 martijn rbsize += 4096;
173 6bf2fad2 2019-03-29 martijn nread = read(STDIN_FILENO, rbuf + reoff, rbsize - reoff);
174 6bf2fad2 2019-03-29 martijn if (nread <= 0)
175 6bf2fad2 2019-03-29 martijn return nread;
176 6bf2fad2 2019-03-29 martijn reoff += nread;
177 6bf2fad2 2019-03-29 martijn } while (1);
180 eaefb262 2019-03-27 martijn static void
181 eaefb262 2019-03-27 martijn smtp_newline(int fd, short event, void *arg)
183 eaefb262 2019-03-27 martijn struct event *stdinev = (struct event *)arg;
184 d5a6ce31 2019-04-03 martijn static char *line = NULL, *linedup = NULL;
185 d5a6ce31 2019-04-03 martijn static size_t linesize = 0;
186 d5a6ce31 2019-04-03 martijn static size_t dupsize = 0;
187 a248a3c1 2019-03-27 martijn ssize_t linelen;
188 a248a3c1 2019-03-27 martijn char *start, *end, *type, *direction, *phase, *params;
189 a248a3c1 2019-03-27 martijn int version;
190 42a4c512 2019-03-28 martijn struct timespec tm;
191 a248a3c1 2019-03-27 martijn uint64_t reqid, token;
194 6bf2fad2 2019-03-29 martijn while ((linelen = smtp_getline(&line, &linesize)) > 0) {
195 ced7acc6 2019-03-29 martijn if (dupsize < linesize) {
196 ced7acc6 2019-03-29 martijn if ((linedup = realloc(linedup, linesize)) == NULL)
197 ced7acc6 2019-03-29 martijn fatal(NULL);
198 ced7acc6 2019-03-29 martijn dupsize = linesize;
200 ced7acc6 2019-03-29 martijn strlcpy(linedup, line, dupsize);
201 a248a3c1 2019-03-27 martijn type = line;
202 a248a3c1 2019-03-27 martijn if ((start = strchr(type, '|')) == NULL)
203 35699cf9 2019-03-29 martijn fatalx("Invalid line received: missing version: %s", linedup);
204 a248a3c1 2019-03-27 martijn start++[0] = '\0';
205 a248a3c1 2019-03-27 martijn if ((end = strchr(start, '|')) == NULL)
206 35699cf9 2019-03-29 martijn fatalx("Invalid line received: missing time: %s", linedup);
207 a248a3c1 2019-03-27 martijn end++[0] = '\0';
208 a248a3c1 2019-03-27 martijn if (strcmp(start, "1") != 0)
209 35699cf9 2019-03-29 martijn fatalx("Unsupported protocol received: %s: %s", start, linedup);
210 a248a3c1 2019-03-27 martijn version = 1;
211 a248a3c1 2019-03-27 martijn start = end;
212 a248a3c1 2019-03-27 martijn if ((direction = strchr(start, '|')) == NULL)
213 35699cf9 2019-03-29 martijn fatalx("Invalid line received: missing direction: %s", linedup);
214 a248a3c1 2019-03-27 martijn direction++[0] = '\0';
215 42a4c512 2019-03-28 martijn tm.tv_sec = (time_t) strtoull(start, &end, 10);
216 42a4c512 2019-03-28 martijn tm.tv_nsec = 0;
217 42a4c512 2019-03-28 martijn if (start[0] == '\0' || (end[0] != '\0' && end[0] != '.'))
218 35699cf9 2019-03-29 martijn fatalx("Invalid line received: invalid timestamp: %s", linedup);
219 42a4c512 2019-03-28 martijn if (end[0] == '.') {
220 42a4c512 2019-03-28 martijn start = end + 1;
221 42a4c512 2019-03-28 martijn tm.tv_nsec = strtol(start, &end, 10);
222 42a4c512 2019-03-28 martijn if (start[0] == '\0' || end[0] != '\0')
223 b633fa4c 2019-03-29 martijn fatalx("Invalid line received: invalid "
224 35699cf9 2019-03-29 martijn "timestamp: %s", linedup);
225 57d45cc8 2019-03-28 martijn for (i = 9 - (end - start); i > 0; i--)
226 42a4c512 2019-03-28 martijn tm.tv_nsec *= 10;
228 a248a3c1 2019-03-27 martijn if ((phase = strchr(direction, '|')) == NULL)
229 35699cf9 2019-03-29 martijn fatalx("Invalid line receieved: missing phase: %s", linedup);
230 a248a3c1 2019-03-27 martijn phase++[0] = '\0';
231 a248a3c1 2019-03-27 martijn if ((start = strchr(phase, '|')) == NULL)
232 35699cf9 2019-03-29 martijn fatalx("Invalid line received: missing reqid: %s", linedup);
233 a248a3c1 2019-03-27 martijn start++[0] = '\0';
234 47628d21 2019-03-29 martijn reqid = strtoull(start, ¶ms, 16);
235 47628d21 2019-03-29 martijn if (start[0] == '|' || (params[0] != '|' & params[0] != '\0'))
236 35699cf9 2019-03-29 martijn fatalx("Invalid line received: invalid reqid: %s", linedup);
237 47628d21 2019-03-29 martijn params++;
239 a248a3c1 2019-03-27 martijn for (i = 0; i < NITEMS(smtp_callbacks); i++) {
240 a248a3c1 2019-03-27 martijn if (strcmp(type, smtp_callbacks[i].type) == 0 &&
241 a248a3c1 2019-03-27 martijn strcmp(phase, smtp_callbacks[i].phase) == 0 &&
242 a248a3c1 2019-03-27 martijn strcmp(direction, smtp_callbacks[i].direction) == 0)
245 a248a3c1 2019-03-27 martijn if (i == NITEMS(smtp_callbacks)) {
246 b633fa4c 2019-03-29 martijn fatalx("Invalid line received: received unregistered "
247 35699cf9 2019-03-29 martijn "%s: %s: %s", type, phase, linedup);
249 47628d21 2019-03-29 martijn if (strcmp(type, "filter") == 0) {
250 47628d21 2019-03-29 martijn start = params;
251 47628d21 2019-03-29 martijn token = strtoull(start, ¶ms, 16);
252 47628d21 2019-03-29 martijn if (start[0] == '|' || params[0] != '|')
253 35699cf9 2019-03-29 martijn fatalx("Invalid line received: invalid token: %s", linedup);
254 47628d21 2019-03-29 martijn params++;
255 47628d21 2019-03-29 martijn smtp_callbacks[i].smtp_filter(&(smtp_callbacks[i]),
256 47628d21 2019-03-29 martijn version, &tm, reqid, token, params);
258 47628d21 2019-03-29 martijn smtp_callbacks[i].smtp_report(&(smtp_callbacks[i]),
259 47628d21 2019-03-29 martijn version, &tm, reqid, params);
261 6bf2fad2 2019-03-29 martijn if (linelen == 0 || errno != EAGAIN)
262 eaefb262 2019-03-27 martijn event_del(stdinev);
265 a248a3c1 2019-03-27 martijn static void
266 42a4c512 2019-03-28 martijn smtp_connect(struct smtp_callback *cb, int version, struct timespec *tm,
267 42a4c512 2019-03-28 martijn uint64_t reqid, uint64_t token, char *params)
269 03a6f52a 2019-03-29 martijn struct inx_addr addrx;
270 03a6f52a 2019-03-29 martijn char *hostname;
271 a248a3c1 2019-03-27 martijn char *address;
272 a248a3c1 2019-03-27 martijn int ret;
273 03a6f52a 2019-03-29 martijn void (*f)(char *, int, struct timespec *,char *, char *, uint64_t,
274 03a6f52a 2019-03-29 martijn uint64_t, char *, struct inx_addr *);
276 03a6f52a 2019-03-29 martijn hostname = params;
277 a248a3c1 2019-03-27 martijn if ((address = strchr(params, '|')) == NULL)
278 44775e42 2019-03-29 martijn fatalx("Invalid line received: missing address: %s", params);
279 a248a3c1 2019-03-27 martijn address++[0] = '\0';
281 03a6f52a 2019-03-29 martijn addrx.af = AF_INET;
282 a248a3c1 2019-03-27 martijn if (strncasecmp(address, "ipv6:", 5) == 0) {
283 03a6f52a 2019-03-29 martijn addrx.af = AF_INET6;
284 a248a3c1 2019-03-27 martijn address += 5;
287 03a6f52a 2019-03-29 martijn ret = inet_pton(addrx.af, address, addrx.af == AF_INET ?
288 03a6f52a 2019-03-29 martijn (void *)&(addrx.addr) : (void *)&(addrx.addr6));
289 a248a3c1 2019-03-27 martijn if (ret == 0)
290 44775e42 2019-03-29 martijn fatalx("Invalid line received: Couldn't parse address: %s", params);
291 a248a3c1 2019-03-27 martijn if (ret == -1)
292 44775e42 2019-03-29 martijn fatal("Couldn't convert address: %s", params);
294 03a6f52a 2019-03-29 martijn f = cb->cb;
295 03a6f52a 2019-03-29 martijn f(cb->type, version, tm, cb->direction, cb->phase, reqid, token,
296 03a6f52a 2019-03-29 martijn hostname, &addrx);
299 47628d21 2019-03-29 martijn static void
300 a28aed52 2019-03-31 martijn smtp_data(struct smtp_callback *cb, int version, struct timespec *tm,
301 a28aed52 2019-03-31 martijn uint64_t reqid, uint64_t token, char *params)
303 a28aed52 2019-03-31 martijn void (*f)(char *, int, struct timespec *, char *, char *, uint64_t,
304 a28aed52 2019-03-31 martijn uint64_t);
306 a28aed52 2019-03-31 martijn f = cb->cb;
307 a28aed52 2019-03-31 martijn f(cb->type, version, tm, cb->direction, cb->phase, reqid, token);
310 a28aed52 2019-03-31 martijn static void
311 02090eee 2019-03-29 martijn smtp_dataline(struct smtp_callback *cb, int version, struct timespec *tm,
312 02090eee 2019-03-29 martijn uint64_t reqid, uint64_t token, char *line)
314 a28aed52 2019-03-31 martijn void (*f)(char *, int, struct timespec *, char *, char *, uint64_t,
315 02090eee 2019-03-29 martijn uint64_t, char *);
317 02090eee 2019-03-29 martijn f = cb->cb;
318 02090eee 2019-03-29 martijn f(cb->type, version, tm, cb->direction, cb->phase, reqid, token,
322 02090eee 2019-03-29 martijn static void
323 47628d21 2019-03-29 martijn smtp_in_link_disconnect(struct smtp_callback *cb, int version,
324 47628d21 2019-03-29 martijn struct timespec *tm, uint64_t reqid, char *params)
326 47628d21 2019-03-29 martijn void (*f)(char *, int, struct timespec *, char *, char *, uint64_t);
328 47628d21 2019-03-29 martijn f = cb->cb;
329 47628d21 2019-03-29 martijn f(cb->type, version, tm, cb->direction, cb->phase, reqid);
333 57cbfccc 2019-03-27 martijn smtp_filter_proceed(uint64_t reqid, uint64_t token)
335 a211223d 2019-04-01 martijn smtp_printf("filter-result|%016"PRIx64"|%016"PRIx64"|proceed\n", token,
339 a211223d 2019-04-01 martijn static void
340 a211223d 2019-04-01 martijn smtp_printf(const char *fmt, ...)
342 a211223d 2019-04-01 martijn va_list ap;
344 a211223d 2019-04-01 martijn va_start(ap, fmt);
345 a211223d 2019-04-01 martijn smtp_vprintf(fmt, ap);
346 a211223d 2019-04-01 martijn va_end(ap);
349 a211223d 2019-04-01 martijn static void
350 a211223d 2019-04-01 martijn smtp_vprintf(const char *fmt, va_list ap)
352 a211223d 2019-04-01 martijn va_list cap;
353 a211223d 2019-04-01 martijn static struct smtp_writebuf buf = {NULL, 0, 0};
354 a211223d 2019-04-01 martijn int fmtlen;
356 a211223d 2019-04-01 martijn va_copy(cap, ap);
357 a211223d 2019-04-01 martijn fmtlen = vsnprintf(buf.buf + buf.buflen, buf.bufsize - buf.buflen, fmt,
359 a211223d 2019-04-01 martijn if (fmtlen == -1)
360 a211223d 2019-04-01 martijn fatal("vsnprintf");
361 a211223d 2019-04-01 martijn if (fmtlen >= buf.bufsize - buf.buflen) {
362 a211223d 2019-04-01 martijn buf.bufsize = buf.buflen + fmtlen + 1;
363 a211223d 2019-04-01 martijn buf.buf = reallocarray(buf.buf, buf.bufsize,
364 a211223d 2019-04-01 martijn sizeof(*(buf.buf)));
365 a211223d 2019-04-01 martijn if (buf.buf == NULL)
366 a211223d 2019-04-01 martijn fatalx(NULL);
367 a211223d 2019-04-01 martijn fmtlen = vsnprintf(buf.buf + buf.buflen,
368 a211223d 2019-04-01 martijn buf.bufsize - buf.buflen, fmt, cap);
369 a211223d 2019-04-01 martijn if (fmtlen == -1)
370 a211223d 2019-04-01 martijn fatal("vsnprintf");
372 56ffa48b 2019-04-03 martijn va_end(cap);
373 a211223d 2019-04-01 martijn buf.buflen += fmtlen;
375 a211223d 2019-04-01 martijn if (strchr(buf.buf, '\n') != NULL)
376 a211223d 2019-04-01 martijn smtp_write(STDOUT_FILENO, EV_WRITE, &buf);
379 a211223d 2019-04-01 martijn static void
380 a211223d 2019-04-01 martijn smtp_write(int fd, short event, void *arg)
382 a211223d 2019-04-01 martijn struct smtp_writebuf *buf = arg;
383 6fdaa2e1 2019-04-03 martijn static struct event stdoutev;
384 a211223d 2019-04-01 martijn static int evset = 0;
385 a211223d 2019-04-01 martijn ssize_t wlen;
387 a211223d 2019-04-01 martijn if (buf->buflen == 0)
389 6fdaa2e1 2019-04-03 martijn if (event_pending(&stdoutev, EV_WRITE, NULL))
391 a211223d 2019-04-01 martijn if (!evset) {
392 6fdaa2e1 2019-04-03 martijn event_set(&stdoutev, fd, EV_WRITE, smtp_write, buf);
393 a211223d 2019-04-01 martijn evset = 1;
395 a211223d 2019-04-01 martijn wlen = write(fd, buf->buf, buf->buflen);
396 a211223d 2019-04-01 martijn if (wlen == -1) {
397 585e2e89 2019-04-01 martijn if (errno != EAGAIN && errno != EINTR)
398 a211223d 2019-04-01 martijn fatal("Failed to write to smtpd");
399 6fdaa2e1 2019-04-03 martijn event_add(&stdoutev, NULL);
402 a211223d 2019-04-01 martijn if (wlen < buf->buflen) {
403 a211223d 2019-04-01 martijn memmove(buf->buf, buf->buf + wlen, buf->buflen - wlen);
404 6fdaa2e1 2019-04-03 martijn event_add(&stdoutev, NULL);
406 a211223d 2019-04-01 martijn buf->buflen -= wlen;
410 57cbfccc 2019-03-27 martijn smtp_filter_reject(uint64_t reqid, uint64_t token, int code,
411 57cbfccc 2019-03-27 martijn const char *reason, ...)
413 57cbfccc 2019-03-27 martijn va_list ap;
415 57cbfccc 2019-03-27 martijn if (code < 200 || code > 599)
416 b633fa4c 2019-03-29 martijn fatalx("Invalid reject code");
418 a211223d 2019-04-01 martijn smtp_printf("filter-result|%016"PRIx64"|%016"PRIx64"|reject|%d ", token,
419 57cbfccc 2019-03-27 martijn reqid, code);
420 57cbfccc 2019-03-27 martijn va_start(ap, reason);
421 a211223d 2019-04-01 martijn smtp_vprintf(reason, ap);
422 57cbfccc 2019-03-27 martijn va_end(ap);
423 a211223d 2019-04-01 martijn smtp_printf("\n");
427 57cbfccc 2019-03-27 martijn smtp_filter_disconnect(uint64_t reqid, uint64_t token, const char *reason, ...)
429 57cbfccc 2019-03-27 martijn va_list ap;
431 a211223d 2019-04-01 martijn smtp_printf("filter-result|%016"PRIx64"|%016"PRIx64"|disconnect|421 ",
432 57cbfccc 2019-03-27 martijn token, reqid);
433 57cbfccc 2019-03-27 martijn va_start(ap, reason);
434 a211223d 2019-04-01 martijn smtp_vprintf(reason, ap);
435 57cbfccc 2019-03-27 martijn va_end(ap);
436 a211223d 2019-04-01 martijn smtp_printf("\n");
440 02090eee 2019-03-29 martijn smtp_filter_dataline(uint64_t reqid, uint64_t token, const char *line, ...)
442 02090eee 2019-03-29 martijn va_list ap;
444 a211223d 2019-04-01 martijn smtp_printf("filter-dataline|%016"PRIx64"|%016"PRIx64"|", token, reqid);
445 02090eee 2019-03-29 martijn va_start(ap, line);
446 a211223d 2019-04-01 martijn smtp_vprintf(line, ap);
447 02090eee 2019-03-29 martijn va_end(ap);
448 a211223d 2019-04-01 martijn smtp_printf("\n");
451 a248a3c1 2019-03-27 martijn static int
452 03a6f52a 2019-03-29 martijn smtp_register(char *type, char *phase, char *direction, void *cb)
455 c6714f66 2019-04-01 martijn static int evinit = 0;
457 73ac3ec1 2019-03-27 martijn if (ready)
458 b633fa4c 2019-03-29 martijn fatalx("Can't register when proc is running");
460 dd179c35 2019-04-03 martijn if (!evinit) {
461 c6714f66 2019-04-01 martijn event_init();
462 dd179c35 2019-04-03 martijn evinit = 1;
465 a248a3c1 2019-03-27 martijn for (i = 0; i < NITEMS(smtp_callbacks); i++) {
466 a248a3c1 2019-03-27 martijn if (strcmp(type, smtp_callbacks[i].type) == 0 &&
467 a248a3c1 2019-03-27 martijn strcmp(phase, smtp_callbacks[i].phase) == 0 &&
468 a248a3c1 2019-03-27 martijn strcmp(direction, smtp_callbacks[i].direction) == 0) {
469 a248a3c1 2019-03-27 martijn if (smtp_callbacks[i].cb != NULL) {
470 a248a3c1 2019-03-27 martijn errno = EALREADY;
471 a248a3c1 2019-03-27 martijn return -1;
473 a248a3c1 2019-03-27 martijn smtp_callbacks[i].cb = cb;
474 a211223d 2019-04-01 martijn smtp_printf("register|%s|%s|%s\n", type, direction,
476 a248a3c1 2019-03-27 martijn return 0;
479 a248a3c1 2019-03-27 martijn errno = EINVAL;
480 a248a3c1 2019-03-27 martijn return -1;
