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- #include <sys/types.h>
- #include <sys/stat.h>
- #include "readwrite.h"
- #include "sig.h"
- #include "env.h"
- #include "byte.h"
- #include "exit.h"
- #include "fork.h"
- #include "open.h"
- #include "wait.h"
- #include "lock.h"
- #include "seek.h"
- #include "substdio.h"
- #include "getln.h"
- #include "subfd.h"
- #include "sgetopt.h"
- #include "alloc.h"
- #include "error.h"
- #include "stralloc.h"
- #include "fmt.h"
- #include "str.h"
- #include "now.h"
- #include "case.h"
- #include "quote.h"
- #include "qmail.h"
- #include "slurpclose.h"
- #include "myctime.h"
- #include "gfrom.h"
- #include "auto_patrn.h"
-
- #ifdef __amigaos__
- #include <sys/file.h>
- #include <string.h>
- #endif
-
- void err(s) char *s; { substdio_putsflush(subfderr,s); }
- void soft() { _exit(111); }
- void hard() { _exit(100); }
-
- void temp_childcrashed() { err("Aack, child crashed. (#4.3.0)\n"); soft(); }
- void temp_rewind() { err("Unable to rewind message. (#4.3.0)\n"); soft(); }
- void temp_fork() { err("Unable to fork. (#4.3.0)\n"); soft(); }
- void temp_read() { err("Error while reading message. (#4.3.0)\n"); soft(); }
- void temp_write() { err("Error while writing message. (#4.3.0)\n"); soft(); }
- void temp_child() { err("Temporary error in forwarding message. (#4.3.0)\n"); soft(); }
- void temp_maildirtimeout() { err("Timeout on maildir delivery. (#4.3.0)\n"); soft(); }
- void temp_maildir() { err("Temporary error on maildir delivery. (#4.3.0)\n"); soft(); }
- void temp_nomaildir() { err("Unable to chdir to maildir. (#4.2.1)\n"); soft(); }
- void temp_open(fn) char *fn; { err("Unable to open "); err(fn); err(". (#4.2.1)\n"); soft(); }
-
- void temp_blankline() { err("Uh-oh: first line of .qmail file is blank. (#4.2.1)\n"); soft(); }
- void temp_fofile() { err("Uh-oh: .qmail has file delivery but has e bit set. (#4.7.0)\n"); soft(); }
- void temp_foprog() { err("Uh-oh: .qmail has prog delivery but has e bit set. (#4.7.0)\n"); soft(); }
- void temp_nomem() { err("Out of memory. (#4.3.0)\n"); soft(); }
- void temp_chdir() { err("Unable to switch to home directory. (#4.3.0)\n"); soft(); }
- void temp_homestat() { err("Unable to stat home directory. (#4.3.0)\n"); soft(); }
- void temp_homesticky() { err("Home directory has h bit set: user is editing his .qmail file. (#4.2.1)\n"); soft(); }
- void temp_homewritable() { err("Uh-oh: home directory is group or world writable. (#4.7.0)\n"); soft(); }
- void temp_qmwritable() { err("Uh-oh: .qmail file is group or world writable. (#4.7.0)\n"); soft(); }
- void temp_nfsqmail() { err("Temporary error trying to open .qmail file. (#4.3.0)\n"); soft(); }
- void temp_denyqmail() { err("Permission error trying to open .qmail file. (#4.3.0)\n"); soft(); }
- void temp_slowlock() { err("File has been locked for 30 seconds straight. (#4.3.0)\n"); soft(); }
-
- void bounce_childperm() { err("Permanent error in forwarding message. (#5.2.4)\n"); hard(); }
- void bounce_loop() { err("This message is looping: it already has my Delivered-To line. (#5.4.6)\n"); hard(); }
- void bounce_ext() { err("Sorry, no mailbox here by that name. (#5.1.1)\n"); hard(); }
- void usage() { err("qmail-local: usage: qmail-local [ -nN ] user homedir local dash ext domain sender aliasempty\n"); hard(); }
-
- void warn_homesticky() { err("Warning: home directory has h bit set.\n"); }
-
- int flagdoit;
- int flag99;
-
- char *user;
- char *homedir;
- char *local;
- char *dash;
- char *ext;
- char *host;
- char *sender;
- char *aliasempty;
-
- stralloc dashext = {0};
- stralloc ufline = {0};
- stralloc rpline = {0};
- stralloc envrecip = {0};
- stralloc dtline = {0};
- stralloc qme = {0};
- stralloc ueo = {0};
- stralloc cmds = {0};
- stralloc messline = {0};
- stralloc foo = {0};
-
- char buf[1024];
- char outbuf[1024];
-
- /* child process */
-
- char fntmptph[80 + FMT_ULONG * 2];
- char fnnewtph[80 + FMT_ULONG * 2];
- void tryunlinktmp() { unlink(fntmptph); }
- void sigalrm() { tryunlinktmp(); _exit(3); }
-
- void maildir_child(dir)
- char *dir;
- {
- unsigned long pid;
- unsigned long time;
- char host[64];
- char *s;
- int loop;
- struct stat st;
- int fd;
- substdio ss;
- substdio ssout;
-
- sig_alarmcatch(sigalrm);
- if (chdir(dir) == -1) { if (error_temp(errno)) _exit(1); _exit(2); }
- pid = getpid();
- host[0] = 0;
- gethostname(host,sizeof(host));
- for (loop = 0;;++loop)
- {
- time = now();
- s = fntmptph;
- s += fmt_str(s,"tmp/");
- s += fmt_ulong(s,time); *s++ = '.';
- s += fmt_ulong(s,pid); *s++ = '.';
- s += fmt_strn(s,host,sizeof(host)); *s++ = 0;
- if (stat(fntmptph,&st) == -1) if (errno == error_noent) break;
- /* really should never get to this point */
- if (loop == 2) _exit(1);
- sleep(2);
- }
- str_copy(fnnewtph,fntmptph);
- byte_copy(fnnewtph,3,"new");
-
- alarm(86400);
- fd = open_excl(fntmptph);
- if (fd == -1) _exit(1);
-
- substdio_fdbuf(&ss,read,0,buf,sizeof(buf));
- substdio_fdbuf(&ssout,write,fd,outbuf,sizeof(outbuf));
- if (substdio_put(&ssout,rpline.s,rpline.len) == -1) goto fail;
- if (substdio_put(&ssout,dtline.s,dtline.len) == -1) goto fail;
-
- switch(substdio_copy(&ssout,&ss))
- {
- case -2: tryunlinktmp(); _exit(4);
- case -3: goto fail;
- }
-
- if (substdio_flush(&ssout) == -1) goto fail;
- if (fsync(fd) == -1) goto fail;
- if (close(fd) == -1) goto fail; /* NFS dorks */
-
- if (link(fntmptph,fnnewtph) == -1) goto fail;
- /* if it was error_exist, almost certainly successful; i hate NFS */
- tryunlinktmp(); _exit(0);
-
- fail: tryunlinktmp(); _exit(1);
- }
-
- /* end child process */
-
- void maildir(fn)
- char *fn;
- {
- int child;
- int wstat;
-
- if (seek_begin(0) == -1) temp_rewind();
-
- switch(child = fork())
- {
- case -1:
- temp_fork();
- case 0:
- maildir_child(fn);
- soft();
- }
-
- wait_pid(&wstat,child);
- if (wait_crashed(wstat))
- temp_childcrashed();
- switch(wait_exitcode(wstat))
- {
- case 0: break;
- case 2: temp_nomaildir();
- case 3: temp_maildirtimeout();
- case 4: temp_read();
- default: temp_maildir();
- }
- }
-
- void slowlock() { temp_slowlock(); }
-
- void mailfile(fn)
- char *fn;
- {
- int fd;
- substdio ss;
- substdio ssout;
- int match;
- seek_pos pos;
- int flaglocked;
-
- if (seek_begin(0) == -1) temp_rewind();
-
- #ifndef __amigaos__
- fd = open_append(fn);
- if (fd == -1) temp_open(fn);
-
- sig_alarmcatch(slowlock);
- alarm(30);
- flaglocked = (lock_ex(fd) != -1);
- alarm(0);
- sig_alarmdefault();
-
- #else /* __amigaos__ */
- /* Attempt a mandatory exclusive lock for upto 30 seconds. */
- {
- int c;
-
- for (c = 30, flaglocked = 0; !flaglocked && c >= 0; c--)
- {
- if (-1 != (fd = open_append(fn)))
- {
- if (!(flaglocked = (-1 != amiga_flock (fd, LOCK_EX | LOCK_NB))))
- close (fd);
- }
- /* If the file couldn't be locked, sleep for a second unless this
- * was the final attempt.
- */
- if (!flaglocked && c != 0)
- sleep (1);
- }
- if (!flaglocked)
- temp_slowlock();
- }
- #endif /* __amigaos__ */
-
- seek_end(fd);
- pos = seek_cur(fd);
-
- substdio_fdbuf(&ss,read,0,buf,sizeof(buf));
- substdio_fdbuf(&ssout,write,fd,outbuf,sizeof(outbuf));
- if (substdio_put(&ssout,ufline.s,ufline.len)) goto writeerrs;
- if (substdio_put(&ssout,rpline.s,rpline.len)) goto writeerrs;
- if (substdio_put(&ssout,dtline.s,dtline.len)) goto writeerrs;
- for (;;)
- {
- if (getln(&ss,&messline,&match,'\n') != 0)
- { if (flaglocked) seek_trunc(fd,pos); close(fd); temp_read(); }
- if (!match && !messline.len) break;
- if (gfrom(messline.s,messline.len))
- if (substdio_bput(&ssout,">",1)) goto writeerrs;
- if (substdio_bput(&ssout,messline.s,messline.len)) goto writeerrs;
- if (!match)
- {
- if (substdio_bputs(&ssout,"\n")) goto writeerrs;
- break;
- }
- }
- if (substdio_bputs(&ssout,"\n")) goto writeerrs;
- if (substdio_flush(&ssout)) goto writeerrs;
- if (fsync(fd) == -1) goto writeerrs;
- close(fd);
- return;
-
- writeerrs:
- if (flaglocked) seek_trunc(fd,pos);
- close(fd);
- temp_write();
- }
-
- void mailprogram(prog)
- char *prog;
- {
- int child;
- char *(args[4]);
- int wstat;
-
- if (seek_begin(0) == -1) temp_rewind();
-
- switch(child = fork())
- {
- case -1:
- temp_fork();
- case 0:
- args[0] = "sh"; args[1] = "-c"; args[2] = prog; args[3] = 0;
- sig_pipedefault();
- execvp(*args,args);
- if (errno == error_txtbsy) { err("Text busy. (#4.3.0)\n"); soft(); }
- if (errno == error_nomem) { err("Out of memory. (#4.3.0)\n"); soft(); }
- if (errno == error_io) { err("I/O error. (#4.3.0)\n"); soft(); }
- if (error_temp(errno)) { err("Temporary error. (#4.3.0)\n"); soft(); }
- err("Unable to execute "); err(*args); err(" (#5.2.4)\n");
- hard();
- }
-
- wait_pid(&wstat,child);
- if (wait_crashed(wstat))
- temp_childcrashed();
- switch(wait_exitcode(wstat))
- {
- case 100:
- case 64: case 65: case 70: case 76: case 77: case 78: case 112: hard();
- case 0: break;
- case 99: flag99 = 1; break;
- default: soft();
- }
- }
-
- unsigned long mailforward_qp = 0;
-
- void mailforward(recips)
- char **recips;
- {
- struct qmail qqt;
- substdio ss;
- int match;
-
- if (seek_begin(0) == -1) temp_rewind();
- substdio_fdbuf(&ss,read,0,buf,sizeof(buf));
-
- if (qmail_open(&qqt) == -1) temp_fork();
- mailforward_qp = qmail_qp(&qqt);
- qmail_put(&qqt,dtline.s,dtline.len);
- do
- {
- if (getln(&ss,&messline,&match,'\n') != 0) { qmail_fail(&qqt); break; }
- qmail_put(&qqt,messline.s,messline.len);
- }
- while (match);
- qmail_from(&qqt,ueo.s);
- while (*recips) qmail_to(&qqt,*recips++);
- switch(qmail_close(&qqt))
- {
- case QMAIL_TOOLONG: bounce_childperm();
- case QMAIL_READ: temp_read();
- case 0: return;
- default: temp_child();
- }
- }
-
- void bouncexf()
- {
- int match;
- substdio ss;
-
- if (seek_begin(0) == -1) temp_rewind();
- substdio_fdbuf(&ss,read,0,buf,sizeof(buf));
- for (;;)
- {
- if (getln(&ss,&messline,&match,'\n') != 0) temp_read();
- if (!match) break;
- if (messline.len <= 1)
- break;
- if (messline.len == dtline.len)
- if (!str_diffn(messline.s,dtline.s,dtline.len))
- bounce_loop();
- }
- }
-
- void checkhome()
- {
- struct stat st;
-
- if (stat(".",&st) == -1) temp_homestat();
- if (st.st_mode & auto_patrn) temp_homewritable();
- if (st.st_mode & 01000)
- if (flagdoit) temp_homesticky(); else warn_homesticky();
- }
-
- int qmeox(dashowner)
- char *dashowner;
- {
- struct stat st;
-
- if (!stralloc_copys(&qme,".qmail")) temp_nomem();
- if (!stralloc_cat(&qme,&dashext)) temp_nomem();
- if (!stralloc_cats(&qme,dashowner)) temp_nomem();
- if (!stralloc_0(&qme)) temp_nomem();
- if (stat(qme.s,&st) == -1)
- {
- if (error_temp(errno)) temp_nfsqmail();
- return -1;
- }
- return 0;
- }
-
- int qmeopen(cutable)
- int *cutable;
- {
- int fd;
- struct stat st;
- int i;
-
- i = dashext.len;
- for (;;)
- {
- if (!stralloc_copys(&qme,".qmail")) temp_nomem();
- if (!stralloc_catb(&qme,dashext.s,i)) temp_nomem();
- if (i < dashext.len) if (!stralloc_cats(&qme,"-default")) temp_nomem();
- if (!stralloc_0(&qme)) temp_nomem();
- fd = open_read(qme.s);
- if (fd == -1)
- {
- if (error_temp(errno)) temp_nfsqmail();
- if (errno == error_perm) temp_denyqmail();
- if (errno == error_acces) temp_denyqmail();
- }
- else
- {
- if (fstat(fd,&st) == -1) temp_nfsqmail();
- if ((st.st_mode & S_IFMT) == S_IFREG)
- {
- if (st.st_mode & auto_patrn) temp_qmwritable();
- *cutable = !!(st.st_mode & 0100);
- return fd;
- }
- close(fd);
- }
- if (!i) return -1;
- do
- if (dashext.s[--i] == '-') break;
- while (i);
- }
- }
-
- unsigned long count_file = 0;
- unsigned long count_forward = 0;
- unsigned long count_program = 0;
- char count_buf[FMT_ULONG];
-
- void count_print()
- {
- substdio_puts(subfdoutsmall,"did ");
- substdio_put(subfdoutsmall,count_buf,fmt_ulong(count_buf,count_file));
- substdio_puts(subfdoutsmall,"+");
- substdio_put(subfdoutsmall,count_buf,fmt_ulong(count_buf,count_forward));
- substdio_puts(subfdoutsmall,"+");
- substdio_put(subfdoutsmall,count_buf,fmt_ulong(count_buf,count_program));
- substdio_puts(subfdoutsmall,"\n");
- if (mailforward_qp)
- {
- substdio_puts(subfdoutsmall,"qp ");
- substdio_put(subfdoutsmall,count_buf,fmt_ulong(count_buf,mailforward_qp));
- substdio_puts(subfdoutsmall,"\n");
- }
- substdio_flush(subfdoutsmall);
- }
-
- void sayit(type,cmd,len)
- char *type;
- char *cmd;
- int len;
- {
- substdio_puts(subfdoutsmall,type);
- substdio_put(subfdoutsmall,cmd,len);
- substdio_putsflush(subfdoutsmall,"\n");
- }
-
- void main(argc,argv)
- int argc;
- char **argv;
- {
- int opt;
- int i;
- int j;
- int k;
- int fd;
- int numforward;
- char **recips;
- datetime_sec starttime;
- int flagforwardonly;
- char *extx;
-
- umask(077);
- sig_pipeignore();
-
- if (!env_init()) temp_nomem();
-
- flagdoit = 1;
- while ((opt = getopt(argc,argv,"nN")) != opteof)
- switch(opt)
- {
- case 'n': flagdoit = 0; break;
- case 'N': flagdoit = 1; break;
- case '?':
- default:
- hard();
- }
- argc -= optind;
- argv += optind;
-
- if (!(user = *argv++)) usage();
- if (!(homedir = *argv++)) usage();
- if (!(local = *argv++)) usage();
- if (!(dash = *argv++)) usage();
- if (!(ext = *argv++)) usage();
- if (!(host = *argv++)) usage();
- if (!(sender = *argv++)) usage();
- if (!(aliasempty = *argv++)) usage();
- if (*argv) usage();
-
- #ifdef __amigaos__
- if (strchr (homedir, ':') <= &homedir[0]) usage();
- #else
- if (homedir[0] != '/') usage();
- #endif
- if (chdir(homedir) == -1) temp_chdir();
- checkhome();
-
- if (!env_put2("HOST",host)) temp_nomem();
- if (!env_put2("HOME",homedir)) temp_nomem();
- if (!env_put2("USER",user)) temp_nomem();
- if (!env_put2("LOCAL",local)) temp_nomem();
-
- if (!stralloc_copys(&envrecip,local)) temp_nomem();
- if (!stralloc_cats(&envrecip,"@")) temp_nomem();
- if (!stralloc_cats(&envrecip,host)) temp_nomem();
-
- if (!stralloc_copy(&foo,&envrecip)) temp_nomem();
- if (!stralloc_0(&foo)) temp_nomem();
- if (!env_put2("RECIPIENT",foo.s)) temp_nomem();
-
- if (!stralloc_copys(&dtline,"Delivered-To: ")) temp_nomem();
- if (!stralloc_cat(&dtline,&envrecip)) temp_nomem();
- for (i = 0;i < dtline.len;++i) if (dtline.s[i] == '\n') dtline.s[i] = '_';
- if (!stralloc_cats(&dtline,"\n")) temp_nomem();
-
- if (!stralloc_copy(&foo,&dtline)) temp_nomem();
- if (!stralloc_0(&foo)) temp_nomem();
- if (!env_put2("DTLINE",foo.s)) temp_nomem();
-
- if (flagdoit)
- bouncexf();
-
- if (!env_put2("SENDER",sender)) temp_nomem();
-
- if (!quote2(&foo,sender)) temp_nomem();
- if (!stralloc_copys(&rpline,"Return-Path: <")) temp_nomem();
- if (!stralloc_cat(&rpline,&foo)) temp_nomem();
- for (i = 0;i < rpline.len;++i) if (rpline.s[i] == '\n') rpline.s[i] = '_';
- if (!stralloc_cats(&rpline,">\n")) temp_nomem();
-
- if (!stralloc_copy(&foo,&rpline)) temp_nomem();
- if (!stralloc_0(&foo)) temp_nomem();
- if (!env_put2("RPLINE",foo.s)) temp_nomem();
-
- if (!stralloc_copys(&ufline,"From ")) temp_nomem();
- if (*sender)
- {
- int len; int i; char ch;
-
- len = str_len(sender);
- if (!stralloc_readyplus(&ufline,len)) temp_nomem();
- for (i = 0;i < len;++i)
- {
- ch = sender[i];
- if ((ch == ' ') || (ch == '\t') || (ch == '\n')) ch = '-';
- ufline.s[ufline.len + i] = ch;
- }
- ufline.len += len;
- }
- else
- if (!stralloc_cats(&ufline,"MAILER-DAEMON")) temp_nomem();
- if (!stralloc_cats(&ufline," ")) temp_nomem();
- starttime = now();
- if (!stralloc_cats(&ufline,myctime(starttime))) temp_nomem();
-
- if (!stralloc_copy(&foo,&ufline)) temp_nomem();
- if (!stralloc_0(&foo)) temp_nomem();
- if (!env_put2("UFLINE",foo.s)) temp_nomem();
-
- if (!stralloc_copys(&dashext,dash)) temp_nomem();
- if (!stralloc_cats(&dashext,ext)) temp_nomem();
- for (i = 0;i < dashext.len;++i)
- #ifdef __amigaos__
- if (dashext.s[i] == '.' || dashext.s[i] == ':' || dashext.s[i] == '/')
- dashext.s[i] = ';';
- #else
- if (dashext.s[i] == '.')
- dashext.s[i] = ':';
- #endif
- case_lowerb(dashext.s,dashext.len);
-
- extx = ext;
- if (!env_put2("EXT",extx)) temp_nomem();
- extx += str_chr(extx,'-'); if (*extx) ++extx;
- if (!env_put2("EXT2",extx)) temp_nomem();
- extx += str_chr(extx,'-'); if (*extx) ++extx;
- if (!env_put2("EXT3",extx)) temp_nomem();
- extx += str_chr(extx,'-'); if (*extx) ++extx;
- if (!env_put2("EXT4",extx)) temp_nomem();
-
- flagforwardonly = 0;
- fd = qmeopen(&flagforwardonly);
- if (fd == -1) if (*dash) bounce_ext();
-
- if (!stralloc_copys(&ueo,sender)) temp_nomem();
- if (str_diff(sender,""))
- if (str_diff(sender,"#@[]"))
- if (qmeox("-owner") == 0)
- {
- if (qmeox("-owner-default") == 0)
- {
- if (!stralloc_copys(&ueo,local)) temp_nomem();
- if (!stralloc_cats(&ueo,"-owner-@")) temp_nomem();
- if (!stralloc_cats(&ueo,host)) temp_nomem();
- if (!stralloc_cats(&ueo,"-@[]")) temp_nomem();
- }
- else
- {
- if (!stralloc_copys(&ueo,local)) temp_nomem();
- if (!stralloc_cats(&ueo,"-owner@")) temp_nomem();
- if (!stralloc_cats(&ueo,host)) temp_nomem();
- }
- }
- if (!stralloc_0(&ueo)) temp_nomem();
- if (!env_put2("NEWSENDER",ueo.s)) temp_nomem();
-
- if (!stralloc_ready(&cmds,0)) temp_nomem();
- cmds.len = 0;
- if (fd != -1)
- if (slurpclose(fd,&cmds,256) == -1) temp_nomem();
-
- if (!cmds.len)
- {
- if (!stralloc_copys(&cmds,aliasempty)) temp_nomem();
- flagforwardonly = 0;
- }
- if (!cmds.len || (cmds.s[cmds.len - 1] != '\n'))
- if (!stralloc_cats(&cmds,"\n")) temp_nomem();
-
- numforward = 0;
- i = 0;
- for (j = 0;j < cmds.len;++j)
- if (cmds.s[j] == '\n')
- {
- switch(cmds.s[i]) { case '&': ++numforward; break;
- default: break; }
- i = j + 1;
- }
-
- recips = (char **) alloc((numforward + 1) * sizeof(char *));
- if (!recips) temp_nomem();
- numforward = 0;
-
- flag99 = 0;
-
- i = 0;
- for (j = 0;j < cmds.len;++j)
- if (cmds.s[j] == '\n')
- {
- cmds.s[j] = 0;
- k = j;
- while ((k > i) && (cmds.s[k - 1] == ' ') || (cmds.s[k - 1] == '\t'))
- cmds.s[--k] = 0;
- switch(cmds.s[i])
- {
- case 0: /* k == i */
- if (i) break;
- temp_blankline();
- case '#':
- break;
- case '|':
- ++count_program;
- if (flagforwardonly) temp_foprog();
- if (flagdoit) mailprogram(cmds.s + i + 1);
- else sayit("program ",cmds.s + i + 1,k - i - 1);
- break;
- case '+':
- if (str_equal(cmds.s + i + 1,"list"))
- flagforwardonly = 1;
- break;
- case '&':
- ++i;
- ++count_forward;
- if (flagdoit) recips[numforward++] = cmds.s + i;
- else sayit("forward ",cmds.s + i,k - i);
- break;
- default:
- ++count_file;
- if (flagforwardonly) temp_fofile();
- if (cmds.s[k - 1] == '/')
- if (flagdoit) maildir(cmds.s + i);
- else sayit("maildir ",cmds.s + i,k - i);
- else
- if (flagdoit) mailfile(cmds.s + i);
- else sayit("mbox ",cmds.s + i,k - i);
- break;
-
- }
- i = j + 1;
- if (flag99) break;
- }
-
- if (numforward) if (flagdoit)
- {
- recips[numforward] = 0;
- mailforward(recips);
- }
-
- count_print();
- _exit(0);
- }
-