Commit | Line | Data |
---|---|---|
5b62e993 MW |
1 | #include <sys/types.h> |
2 | #include <sys/stat.h> | |
3 | #include "error.h" | |
4 | #include "stralloc.h" | |
5 | #include "str.h" | |
6 | #include "env.h" | |
7 | #include "sig.h" | |
8 | #include "slurp.h" | |
9 | #include "getconf.h" | |
10 | #include "strerr.h" | |
11 | #include "byte.h" | |
12 | #include "getln.h" | |
13 | #include "case.h" | |
14 | #include "qmail.h" | |
15 | #include "substdio.h" | |
16 | #include "readwrite.h" | |
17 | #include "seek.h" | |
18 | #include "quote.h" | |
19 | #include "datetime.h" | |
20 | #include "now.h" | |
21 | #include "date822fmt.h" | |
22 | #include "fmt.h" | |
23 | #include "subscribe.h" | |
24 | #include "cookie.h" | |
25 | ||
26 | #define FATAL "ezmlm-manage: fatal: " | |
27 | void die_usage() { strerr_die1x(100,"ezmlm-manage: usage: ezmlm-manage dir"); } | |
28 | void die_nomem() { strerr_die2x(111,FATAL,"out of memory"); } | |
29 | void die_badaddr() | |
30 | { | |
31 | strerr_die2x(100,FATAL,"I do not accept messages at this address (#5.1.1)"); | |
32 | } | |
33 | ||
34 | stralloc inhost = {0}; | |
35 | stralloc outhost = {0}; | |
36 | stralloc inlocal = {0}; | |
37 | stralloc outlocal = {0}; | |
38 | stralloc key = {0}; | |
39 | stralloc mailinglist = {0}; | |
40 | ||
41 | datetime_sec when; | |
42 | struct datetime dt; | |
43 | ||
44 | char strnum[FMT_ULONG]; | |
45 | char date[DATE822FMT]; | |
46 | char hash[COOKIE]; | |
47 | datetime_sec hashdate; | |
48 | stralloc target = {0}; | |
49 | stralloc confirm = {0}; | |
50 | stralloc line = {0}; | |
51 | stralloc quoted = {0}; | |
52 | ||
53 | int hashok(action) | |
54 | char *action; | |
55 | { | |
56 | char *x; | |
57 | unsigned long u; | |
58 | ||
59 | x = action + 4; | |
60 | x += scan_ulong(x,&u); | |
61 | hashdate = u; | |
62 | if (hashdate > when) return 0; | |
63 | if (hashdate < when - 1000000) return 0; | |
64 | ||
65 | u = hashdate; | |
66 | strnum[fmt_ulong(strnum,u)] = 0; | |
67 | cookie(hash,key.s,key.len,strnum,target.s,action + 1); | |
68 | ||
69 | if (*x == '.') ++x; | |
70 | if (str_len(x) != COOKIE) return 0; | |
71 | return byte_equal(hash,COOKIE,x); | |
72 | } | |
73 | ||
74 | struct qmail qq; | |
75 | int qqwrite(fd,buf,len) int fd; char *buf; unsigned int len; | |
76 | { | |
77 | qmail_put(&qq,buf,len); | |
78 | return len; | |
79 | } | |
80 | char qqbuf[1]; | |
81 | substdio ssqq = SUBSTDIO_FDBUF(qqwrite,-1,qqbuf,sizeof(qqbuf)); | |
82 | ||
83 | char inbuf[1024]; | |
84 | substdio ssin = SUBSTDIO_FDBUF(read,0,inbuf,sizeof(inbuf)); | |
85 | substdio ssin2 = SUBSTDIO_FDBUF(read,0,inbuf,sizeof(inbuf)); | |
86 | ||
87 | substdio sstext; | |
88 | char textbuf[1024]; | |
89 | ||
90 | void copy(fn) | |
91 | char *fn; | |
92 | { | |
93 | int fd; | |
94 | int match; | |
95 | ||
96 | fd = open_read(fn); | |
97 | if (fd == -1) | |
98 | strerr_die4sys(111,FATAL,"unable to open ",fn,": "); | |
99 | ||
100 | substdio_fdbuf(&sstext,read,fd,textbuf,sizeof(textbuf)); | |
101 | for (;;) { | |
102 | if (getln(&sstext,&line,&match,'\n') == -1) | |
103 | strerr_die4sys(111,FATAL,"unable to read ",fn,": "); | |
104 | ||
105 | if (match) | |
106 | if (line.s[0] == '!') { | |
107 | if (line.s[1] == 'R') { | |
108 | qmail_puts(&qq," "); | |
109 | qmail_puts(&qq,confirm.s); | |
110 | qmail_puts(&qq,"\n"); | |
111 | continue; | |
112 | } | |
113 | if (line.s[1] == 'A') { | |
114 | qmail_puts(&qq," "); | |
115 | qmail_puts(&qq,target.s); | |
116 | qmail_puts(&qq,"\n"); | |
117 | continue; | |
118 | } | |
119 | } | |
120 | ||
121 | qmail_put(&qq,line.s,line.len); | |
122 | ||
123 | if (!match) | |
124 | break; | |
125 | } | |
126 | ||
127 | close(fd); | |
128 | } | |
129 | ||
130 | stralloc mydtline = {0}; | |
131 | ||
132 | void main(argc,argv) | |
133 | int argc; | |
134 | char **argv; | |
135 | { | |
136 | char *dir; | |
137 | char *sender; | |
138 | char *host; | |
139 | char *local; | |
140 | char *action; | |
141 | int fd; | |
142 | int i; | |
143 | int flagconfirm; | |
144 | int flaghashok; | |
145 | int flaggoodfield; | |
146 | int match; | |
147 | ||
148 | umask(022); | |
149 | sig_pipeignore(); | |
150 | when = now(); | |
151 | ||
152 | dir = argv[1]; | |
153 | if (!dir) die_usage(); | |
154 | ||
155 | sender = env_get("SENDER"); | |
156 | if (!sender) strerr_die2x(100,FATAL,"SENDER not set"); | |
157 | local = env_get("LOCAL"); | |
158 | if (!local) strerr_die2x(100,FATAL,"LOCAL not set"); | |
159 | host = env_get("HOST"); | |
160 | if (!host) strerr_die2x(100,FATAL,"HOST not set"); | |
161 | ||
162 | if (!*sender) | |
163 | strerr_die2x(100,FATAL,"I don't reply to bounce messages (#5.7.2)"); | |
164 | if (!sender[str_chr(sender,'@')]) | |
165 | strerr_die2x(100,FATAL,"I don't reply to senders without host names (#5.7.2)"); | |
166 | if (str_equal(sender,"#@[]")) | |
167 | strerr_die2x(100,FATAL,"I don't reply to bounce messages (#5.7.2)"); | |
168 | ||
169 | if (chdir(dir) == -1) | |
170 | strerr_die4sys(111,FATAL,"unable to switch to ",dir,": "); | |
171 | ||
172 | switch(slurp("key",&key,32)) { | |
173 | case -1: | |
174 | strerr_die4sys(111,FATAL,"unable to read ",dir,"/key: "); | |
175 | case 0: | |
176 | strerr_die3x(100,FATAL,dir,"/key does not exist"); | |
177 | } | |
178 | getconf_line(&mailinglist,"mailinglist",1,FATAL,dir); | |
179 | getconf_line(&inhost,"inhost",1,FATAL,dir); | |
180 | getconf_line(&inlocal,"inlocal",1,FATAL,dir); | |
181 | getconf_line(&outhost,"outhost",1,FATAL,dir); | |
182 | getconf_line(&outlocal,"outlocal",1,FATAL,dir); | |
183 | ||
184 | if (inhost.len != str_len(host)) die_badaddr(); | |
185 | if (case_diffb(inhost.s,inhost.len,host)) die_badaddr(); | |
186 | if (inlocal.len > str_len(local)) die_badaddr(); | |
187 | if (case_diffb(inlocal.s,inlocal.len,local)) die_badaddr(); | |
188 | ||
189 | action = local + inlocal.len; | |
190 | ||
191 | switch(slurp("public",&line,1)) { | |
192 | case -1: | |
193 | strerr_die4sys(111,FATAL,"unable to read ",dir,"/public: "); | |
194 | case 0: | |
195 | strerr_die2x(100,FATAL,"sorry, I've been told to reject all requests (#5.7.2)"); | |
196 | } | |
197 | ||
198 | if (!stralloc_copys(&target,sender)) die_nomem(); | |
199 | if (action[0]) { | |
200 | i = 1 + str_chr(action + 1,'-'); | |
201 | if (action[i]) { | |
202 | action[i] = 0; | |
203 | if (!stralloc_copys(&target,action + i + 1)) die_nomem(); | |
204 | i = byte_rchr(target.s,target.len,'='); | |
205 | if (i < target.len) | |
206 | target.s[i] = '@'; | |
207 | } | |
208 | } | |
209 | if (!stralloc_0(&target)) die_nomem(); | |
210 | if (!stralloc_copys(&confirm,"")) die_nomem(); | |
211 | ||
212 | if (qmail_open(&qq) == -1) | |
213 | strerr_die2sys(111,FATAL,"unable to run qmail-queue: "); | |
214 | ||
215 | qmail_puts(&qq,"Mailing-List: "); | |
216 | qmail_put(&qq,mailinglist.s,mailinglist.len); | |
217 | qmail_puts(&qq,"\nDate: "); | |
218 | datetime_tai(&dt,when); | |
219 | qmail_put(&qq,date,date822fmt(date,&dt)); | |
220 | qmail_puts(&qq,"Message-ID: <"); | |
221 | qmail_put(&qq,strnum,fmt_ulong(strnum,(unsigned long) when)); | |
222 | qmail_puts(&qq,"."); | |
223 | qmail_put(&qq,strnum,fmt_ulong(strnum,(unsigned long) getpid())); | |
224 | qmail_puts(&qq,".ezmlm@"); | |
225 | qmail_put(&qq,outhost.s,outhost.len); | |
226 | qmail_puts(&qq,">\nFrom: "); | |
227 | if (!quote("ed,&outlocal)) die_nomem(); | |
228 | qmail_put(&qq,quoted.s,quoted.len); | |
229 | qmail_puts(&qq,"-help@"); | |
230 | qmail_put(&qq,outhost.s,outhost.len); | |
231 | qmail_puts(&qq,"\nTo: "); | |
232 | if (!quote2("ed,target.s)) die_nomem(); | |
233 | qmail_put(&qq,quoted.s,quoted.len); | |
234 | qmail_puts(&qq,"\n"); | |
235 | ||
236 | flaghashok = 1; | |
237 | if (str_start(action,"-sc.")) flaghashok = hashok(action); | |
238 | if (str_start(action,"-uc.")) flaghashok = hashok(action); | |
239 | ||
240 | flagconfirm = 0; | |
241 | if (str_equal(action,"-subscribe")) flagconfirm = 1; | |
242 | if (str_equal(action,"-unsubscribe")) flagconfirm = 1; | |
243 | if (!flaghashok) flagconfirm = 1; | |
244 | ||
245 | if (flagconfirm) { | |
246 | strnum[fmt_ulong(strnum,(unsigned long) when)] = 0; | |
247 | cookie(hash,key.s,key.len,strnum,target.s,action + 1); | |
248 | if (!stralloc_copy(&confirm,&outlocal)) die_nomem(); | |
249 | if (!stralloc_cats(&confirm,"-")) die_nomem(); | |
250 | if (!stralloc_catb(&confirm,action + 1,1)) die_nomem(); | |
251 | if (!stralloc_cats(&confirm,"c.")) die_nomem(); | |
252 | if (!stralloc_cats(&confirm,strnum)) die_nomem(); | |
253 | if (!stralloc_cats(&confirm,".")) die_nomem(); | |
254 | if (!stralloc_catb(&confirm,hash,COOKIE)) die_nomem(); | |
255 | if (!stralloc_cats(&confirm,"-")) die_nomem(); | |
256 | i = str_rchr(target.s,'@'); | |
257 | if (!stralloc_catb(&confirm,target.s,i)) die_nomem(); | |
258 | if (target.s[i]) { | |
259 | if (!stralloc_cats(&confirm,"=")) die_nomem(); | |
260 | if (!stralloc_cats(&confirm,target.s + i + 1)) die_nomem(); | |
261 | } | |
262 | if (!stralloc_cats(&confirm,"@")) die_nomem(); | |
263 | if (!stralloc_cat(&confirm,&outhost)) die_nomem(); | |
264 | if (!stralloc_0(&confirm)) die_nomem(); | |
265 | ||
266 | qmail_puts(&qq,"Reply-To: "); | |
267 | if (!quote2("ed,confirm.s)) die_nomem(); | |
268 | qmail_put(&qq,quoted.s,quoted.len); | |
269 | qmail_puts(&qq,"\n"); | |
270 | } | |
271 | if (!stralloc_0(&confirm)) die_nomem(); | |
272 | ||
273 | qmail_puts(&qq,"Subject: ezmlm response\n"); | |
274 | ||
275 | if (!stralloc_copys(&mydtline,"Delivered-To: responder for ")) die_nomem(); | |
276 | if (!stralloc_catb(&mydtline,outlocal.s,outlocal.len)) die_nomem(); | |
277 | if (!stralloc_cats(&mydtline,"@")) die_nomem(); | |
278 | if (!stralloc_catb(&mydtline,outhost.s,outhost.len)) die_nomem(); | |
279 | if (!stralloc_cats(&mydtline,"\n")) die_nomem(); | |
280 | ||
281 | qmail_put(&qq,mydtline.s,mydtline.len); | |
282 | ||
283 | flaggoodfield = 0; | |
284 | for (;;) { | |
285 | if (getln(&ssin,&line,&match,'\n') == -1) | |
286 | strerr_die2sys(111,FATAL,"unable to read input: "); | |
287 | if (!match) break; | |
288 | if (line.len == 1) break; | |
289 | if ((line.s[0] != ' ') && (line.s[0] != '\t')) { | |
290 | flaggoodfield = 0; | |
291 | if (case_startb(line.s,line.len,"mailing-list:")) | |
292 | strerr_die2x(100,FATAL,"incoming message has Mailing-List (#5.7.2)"); | |
293 | if (line.len == mydtline.len) | |
294 | if (byte_equal(line.s,line.len,mydtline.s)) | |
295 | strerr_die2x(100,FATAL,"this message is looping: it already has my Delivered-To line (#5.4.6)"); | |
296 | if (case_startb(line.s,line.len,"delivered-to:")) | |
297 | flaggoodfield = 1; | |
298 | if (case_startb(line.s,line.len,"received:")) | |
299 | flaggoodfield = 1; | |
300 | } | |
301 | if (flaggoodfield) | |
302 | qmail_put(&qq,line.s,line.len); | |
303 | } | |
304 | if (seek_begin(0) == -1) | |
305 | strerr_die2sys(111,FATAL,"unable to seek input: "); | |
306 | ||
307 | qmail_puts(&qq,"\n"); | |
308 | copy("text/top"); | |
309 | if (str_equal(action,"-subscribe")) | |
310 | copy("text/sub-confirm"); | |
311 | else if (str_equal(action,"-unsubscribe")) | |
312 | copy("text/unsub-confirm"); | |
313 | else if (str_start(action,"-sc.")) { | |
314 | if (!flaghashok) | |
315 | copy("text/sub-bad"); | |
316 | else | |
317 | switch(subscribe(target.s,1)) { | |
318 | case -1: strerr_die1(111,FATAL,&subscribe_err); | |
319 | case -2: strerr_die1(100,FATAL,&subscribe_err); | |
320 | case 1: log("+",target.s); copy("text/sub-ok"); break; | |
321 | default: copy("text/sub-nop"); break; | |
322 | } | |
323 | } | |
324 | else if (str_start(action,"-uc.")) { | |
325 | if (!flaghashok) | |
326 | copy("text/unsub-bad"); | |
327 | else | |
328 | switch(subscribe(target.s,0)) { | |
329 | case -1: strerr_die1(111,FATAL,&subscribe_err); | |
330 | case -2: strerr_die1(100,FATAL,&subscribe_err); | |
331 | case 1: log("-",target.s); copy("text/unsub-ok"); break; | |
332 | default: copy("text/unsub-nop"); break; | |
333 | } | |
334 | } | |
335 | else if (str_start(action,"-get.")) { | |
336 | unsigned long u; | |
337 | struct stat st; | |
338 | char ch; | |
339 | int r; | |
340 | ||
341 | scan_ulong(action + 5,&u); | |
342 | ||
343 | if (!stralloc_copys(&line,"archive/")) die_nomem(); | |
344 | if (!stralloc_catb(&line,strnum,fmt_ulong(strnum,u / 100))) die_nomem(); | |
345 | if (!stralloc_cats(&line,"/")) die_nomem(); | |
346 | if (!stralloc_catb(&line,strnum,fmt_uint0(strnum,(unsigned int) (u % 100),2))) die_nomem(); | |
347 | if (!stralloc_0(&line)) die_nomem(); | |
348 | ||
349 | fd = open_read(line.s); | |
350 | if (fd == -1) | |
351 | if (errno != error_noent) | |
352 | strerr_die4sys(111,FATAL,"unable to open ",line.s,": "); | |
353 | else | |
354 | copy("text/get-bad"); | |
355 | else { | |
356 | if (fstat(fd,&st) == -1) | |
357 | copy("text/get-bad"); | |
358 | else if (!(st.st_mode & 0100)) | |
359 | copy("text/get-bad"); | |
360 | else { | |
361 | substdio_fdbuf(&sstext,read,fd,textbuf,sizeof(textbuf)); | |
362 | qmail_puts(&qq,"> "); | |
363 | for (;;) { | |
364 | r = substdio_get(&sstext,&ch,1); | |
365 | if (r == -1) strerr_die4sys(111,FATAL,"unable to read ",line.s,": "); | |
366 | if (r == 0) break; | |
367 | qmail_put(&qq,&ch,1); | |
368 | if (ch == '\n') qmail_puts(&qq,"> "); | |
369 | } | |
370 | qmail_puts(&qq,"\n"); | |
371 | } | |
372 | close(fd); | |
373 | } | |
374 | } | |
375 | else | |
376 | copy("text/help"); | |
377 | ||
378 | copy("text/bottom"); | |
379 | ||
380 | qmail_puts(&qq,"Return-Path: <"); | |
381 | if (!quote2("ed,sender)) die_nomem(); | |
382 | qmail_put(&qq,quoted.s,quoted.len); | |
383 | qmail_puts(&qq,">\n"); | |
384 | if (substdio_copy(&ssqq,&ssin2) != 0) | |
385 | strerr_die2sys(111,FATAL,"unable to read input: "); | |
386 | ||
387 | if (!stralloc_copy(&line,&outlocal)) die_nomem(); | |
388 | if (!stralloc_cats(&line,"-return-@")) die_nomem(); | |
389 | if (!stralloc_cat(&line,&outhost)) die_nomem(); | |
390 | if (!stralloc_0(&line)) die_nomem(); | |
391 | qmail_from(&qq,line.s); | |
392 | ||
393 | qmail_to(&qq,target.s); | |
394 | ||
395 | switch(qmail_close(&qq)) { | |
396 | case 0: | |
397 | strnum[fmt_ulong(strnum,qmail_qp(&qq))] = 0; | |
398 | strerr_die2x(0,"ezmlm-manage: info: qp ",strnum); | |
399 | default: | |
400 | /* don't worry about undoing actions; everything is idempotent */ | |
401 | strerr_die2x(111,FATAL,"temporary qmail-queue error"); | |
402 | } | |
403 | } |