| 1 | #include <sys/types.h> |
| 2 | #include <sys/stat.h> |
| 3 | #include "readwrite.h" |
| 4 | #include "sig.h" |
| 5 | #include "exit.h" |
| 6 | #include "open.h" |
| 7 | #include "seek.h" |
| 8 | #include "fmt.h" |
| 9 | #include "alloc.h" |
| 10 | #include "substdio.h" |
| 11 | #include "datetime.h" |
| 12 | #include "now.h" |
| 13 | #include "triggerpull.h" |
| 14 | #include "extra.h" |
| 15 | #include "auto_qmail.h" |
| 16 | #include "auto_uids.h" |
| 17 | #include "date822fmt.h" |
| 18 | #include "fmtqfn.h" |
| 19 | |
| 20 | #define DEATH 86400 /* 24 hours; _must_ be below q-s's OSSIFIED (36 hours) */ |
| 21 | #define ADDR 1003 |
| 22 | |
| 23 | char inbuf[2048]; |
| 24 | struct substdio ssin; |
| 25 | char outbuf[256]; |
| 26 | struct substdio ssout; |
| 27 | |
| 28 | datetime_sec starttime; |
| 29 | struct datetime dt; |
| 30 | unsigned long mypid; |
| 31 | unsigned long uid; |
| 32 | char *pidfn; |
| 33 | struct stat pidst; |
| 34 | unsigned long messnum; |
| 35 | char *messfn; |
| 36 | char *todofn; |
| 37 | char *intdfn; |
| 38 | int messfd; |
| 39 | int intdfd; |
| 40 | int flagmademess = 0; |
| 41 | int flagmadeintd = 0; |
| 42 | |
| 43 | void cleanup() |
| 44 | { |
| 45 | if (flagmadeintd) |
| 46 | { |
| 47 | seek_trunc(intdfd,0); |
| 48 | if (unlink(intdfn) == -1) return; |
| 49 | } |
| 50 | if (flagmademess) |
| 51 | { |
| 52 | seek_trunc(messfd,0); |
| 53 | if (unlink(messfn) == -1) return; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | void die(e) int e; { _exit(e); } |
| 58 | void die_write() { cleanup(); die(53); } |
| 59 | void die_read() { cleanup(); die(54); } |
| 60 | void sigalrm() { /* thou shalt not clean up here */ die(52); } |
| 61 | void sigbug() { die(81); } |
| 62 | |
| 63 | unsigned int receivedlen; |
| 64 | char *received; |
| 65 | /* "Received: (qmail-queue invoked by alias); 26 Sep 1995 04:46:54 -0000\n" */ |
| 66 | |
| 67 | static unsigned int receivedfmt(s) |
| 68 | char *s; |
| 69 | { |
| 70 | unsigned int i; |
| 71 | unsigned int len; |
| 72 | len = 0; |
| 73 | i = fmt_str(s,"Received: (qmail "); len += i; if (s) s += i; |
| 74 | i = fmt_ulong(s,mypid); len += i; if (s) s += i; |
| 75 | i = fmt_str(s," invoked "); len += i; if (s) s += i; |
| 76 | if (uid == auto_uida) |
| 77 | { i = fmt_str(s,"by alias"); len += i; if (s) s += i; } |
| 78 | else if (uid == auto_uidd) |
| 79 | { i = fmt_str(s,"from network"); len += i; if (s) s += i; } |
| 80 | else if (uid == auto_uids) |
| 81 | { i = fmt_str(s,"for bounce"); len += i; if (s) s += i; } |
| 82 | else |
| 83 | { |
| 84 | i = fmt_str(s,"by uid "); len += i; if (s) s += i; |
| 85 | i = fmt_ulong(s,uid); len += i; if (s) s += i; |
| 86 | } |
| 87 | i = fmt_str(s,"); "); len += i; if (s) s += i; |
| 88 | i = date822fmt(s,&dt); len += i; if (s) s += i; |
| 89 | return len; |
| 90 | } |
| 91 | |
| 92 | void received_setup() |
| 93 | { |
| 94 | receivedlen = receivedfmt((char *) 0); |
| 95 | received = alloc(receivedlen + 1); |
| 96 | if (!received) die(51); |
| 97 | receivedfmt(received); |
| 98 | } |
| 99 | |
| 100 | unsigned int pidfmt(s,seq) |
| 101 | char *s; |
| 102 | unsigned long seq; |
| 103 | { |
| 104 | unsigned int i; |
| 105 | unsigned int len; |
| 106 | |
| 107 | len = 0; |
| 108 | i = fmt_str(s,"pid/"); len += i; if (s) s += i; |
| 109 | i = fmt_ulong(s,mypid); len += i; if (s) s += i; |
| 110 | i = fmt_str(s,"."); len += i; if (s) s += i; |
| 111 | i = fmt_ulong(s,starttime); len += i; if (s) s += i; |
| 112 | i = fmt_str(s,"."); len += i; if (s) s += i; |
| 113 | i = fmt_ulong(s,seq); len += i; if (s) s += i; |
| 114 | ++len; if (s) *s++ = 0; |
| 115 | |
| 116 | return len; |
| 117 | } |
| 118 | |
| 119 | char *fnnum(dirslash,flagsplit) |
| 120 | char *dirslash; |
| 121 | int flagsplit; |
| 122 | { |
| 123 | char *s; |
| 124 | |
| 125 | s = alloc(fmtqfn((char *) 0,dirslash,messnum,flagsplit)); |
| 126 | if (!s) die(51); |
| 127 | fmtqfn(s,dirslash,messnum,flagsplit); |
| 128 | return s; |
| 129 | } |
| 130 | |
| 131 | void pidopen() |
| 132 | { |
| 133 | unsigned int len; |
| 134 | unsigned long seq; |
| 135 | |
| 136 | seq = 1; |
| 137 | len = pidfmt((char *) 0,seq); |
| 138 | pidfn = alloc(len); |
| 139 | if (!pidfn) die(51); |
| 140 | |
| 141 | for (seq = 1;seq < 10;++seq) |
| 142 | { |
| 143 | if (pidfmt((char *) 0,seq) > len) die(81); /* paranoia */ |
| 144 | pidfmt(pidfn,seq); |
| 145 | messfd = open_excl(pidfn); |
| 146 | if (messfd != -1) return; |
| 147 | } |
| 148 | |
| 149 | die(63); |
| 150 | } |
| 151 | |
| 152 | char tmp[FMT_ULONG]; |
| 153 | |
| 154 | void main() |
| 155 | { |
| 156 | unsigned int len; |
| 157 | char ch; |
| 158 | |
| 159 | sig_blocknone(); |
| 160 | umask(033); |
| 161 | if (chdir(auto_qmail) == -1) die(61); |
| 162 | if (chdir("queue") == -1) die(62); |
| 163 | |
| 164 | mypid = getpid(); |
| 165 | uid = getuid(); |
| 166 | starttime = now(); |
| 167 | datetime_tai(&dt,starttime); |
| 168 | |
| 169 | received_setup(); |
| 170 | |
| 171 | sig_pipeignore(); |
| 172 | sig_miscignore(); |
| 173 | sig_alarmcatch(sigalrm); |
| 174 | sig_bugcatch(sigbug); |
| 175 | |
| 176 | alarm(DEATH); |
| 177 | |
| 178 | pidopen(); |
| 179 | if (fstat(messfd,&pidst) == -1) die(63); |
| 180 | |
| 181 | messnum = pidst.st_ino; |
| 182 | messfn = fnnum("mess/",1); |
| 183 | todofn = fnnum("todo/",0); |
| 184 | intdfn = fnnum("intd/",0); |
| 185 | |
| 186 | if (link(pidfn,messfn) == -1) die(64); |
| 187 | if (unlink(pidfn) == -1) die(63); |
| 188 | flagmademess = 1; |
| 189 | |
| 190 | substdio_fdbuf(&ssout,write,messfd,outbuf,sizeof(outbuf)); |
| 191 | substdio_fdbuf(&ssin,read,0,inbuf,sizeof(inbuf)); |
| 192 | |
| 193 | if (substdio_bput(&ssout,received,receivedlen) == -1) die_write(); |
| 194 | |
| 195 | switch(substdio_copy(&ssout,&ssin)) |
| 196 | { |
| 197 | case -2: die_read(); |
| 198 | case -3: die_write(); |
| 199 | } |
| 200 | |
| 201 | if (substdio_flush(&ssout) == -1) die_write(); |
| 202 | if (fsync(messfd) == -1) die_write(); |
| 203 | |
| 204 | intdfd = open_excl(intdfn); |
| 205 | if (intdfd == -1) die(65); |
| 206 | flagmadeintd = 1; |
| 207 | |
| 208 | substdio_fdbuf(&ssout,write,intdfd,outbuf,sizeof(outbuf)); |
| 209 | substdio_fdbuf(&ssin,read,1,inbuf,sizeof(inbuf)); |
| 210 | |
| 211 | if (substdio_bput(&ssout,"u",1) == -1) die_write(); |
| 212 | if (substdio_bput(&ssout,tmp,fmt_ulong(tmp,uid)) == -1) die_write(); |
| 213 | if (substdio_bput(&ssout,"",1) == -1) die_write(); |
| 214 | |
| 215 | if (substdio_bput(&ssout,"p",1) == -1) die_write(); |
| 216 | if (substdio_bput(&ssout,tmp,fmt_ulong(tmp,mypid)) == -1) die_write(); |
| 217 | if (substdio_bput(&ssout,"",1) == -1) die_write(); |
| 218 | |
| 219 | if (substdio_get(&ssin,&ch,1) < 1) die_read(); |
| 220 | if (ch != 'F') die(91); |
| 221 | if (substdio_bput(&ssout,&ch,1) == -1) die_write(); |
| 222 | for (len = 0;len < ADDR;++len) |
| 223 | { |
| 224 | if (substdio_get(&ssin,&ch,1) < 1) die_read(); |
| 225 | if (substdio_put(&ssout,&ch,1) == -1) die_write(); |
| 226 | if (!ch) break; |
| 227 | } |
| 228 | if (len >= ADDR) die(11); |
| 229 | |
| 230 | if (substdio_bput(&ssout,QUEUE_EXTRA,QUEUE_EXTRALEN) == -1) die_write(); |
| 231 | |
| 232 | for (;;) |
| 233 | { |
| 234 | if (substdio_get(&ssin,&ch,1) < 1) die_read(); |
| 235 | if (!ch) break; |
| 236 | if (ch != 'T') die(91); |
| 237 | if (substdio_bput(&ssout,&ch,1) == -1) die_write(); |
| 238 | for (len = 0;len < ADDR;++len) |
| 239 | { |
| 240 | if (substdio_get(&ssin,&ch,1) < 1) die_read(); |
| 241 | if (substdio_bput(&ssout,&ch,1) == -1) die_write(); |
| 242 | if (!ch) break; |
| 243 | } |
| 244 | if (len >= ADDR) die(11); |
| 245 | } |
| 246 | |
| 247 | if (substdio_flush(&ssout) == -1) die_write(); |
| 248 | if (fsync(intdfd) == -1) die_write(); |
| 249 | |
| 250 | if (link(intdfn,todofn) == -1) die(66); |
| 251 | |
| 252 | triggerpull(); |
| 253 | die(0); |
| 254 | } |