#include <netinet/in.h>
#include <arpa/inet.h>
#include "sig.h"
-#include "getln.h"
#include "stralloc.h"
#include "substdio.h"
#include "subfd.h"
#include "exit.h"
#include "constmap.h"
#include "tcpto.h"
+#include "readwrite.h"
#include "timeoutconn.h"
#include "timeoutread.h"
#include "timeoutwrite.h"
struct ip_address partner;
-void out(s) char *s; { if (substdio_puts(subfdout,s) == -1) _exit(0); }
-void zero() { if (substdio_put(subfdout,"\0",1) == -1) _exit(0); }
-void zerodie() { zero(); substdio_flush(subfdout); _exit(0); }
-
+void out(s) char *s; { if (substdio_puts(subfdoutsmall,s) == -1) _exit(0); }
+void zero() { if (substdio_put(subfdoutsmall,"\0",1) == -1) _exit(0); }
+void zerodie() { zero(); substdio_flush(subfdoutsmall); _exit(0); }
void outsafe(sa) stralloc *sa; { int i; char ch;
for (i = 0;i < sa->len;++i) {
ch = sa->s[i]; if (ch < 33) ch = '?'; if (ch > 126) ch = '?';
-if (substdio_put(subfdout,&ch,1) == -1) _exit(0); } }
+if (substdio_put(subfdoutsmall,&ch,1) == -1) _exit(0); } }
void temp_nomem() { out("ZOut of memory. (#4.3.0)\n"); zerodie(); }
void temp_oserr() { out("Z\
it isn't in my control/locals file, so I don't treat it as local. (#5.4.6)\n");
zerodie(); }
-int timeout = 1200;
+void outhost()
+{
+ char x[IPFMT];
+ if (substdio_put(subfdoutsmall,x,ip_fmt(x,&partner)) == -1) _exit(0);
+}
+
+int flagcritical = 0;
+
+void dropped() {
+ out("ZConnected to ");
+ outhost();
+ out(" but connection died. ");
+ if (flagcritical) out("Possible duplicate! ");
+ out("(#4.4.2)\n");
+ zerodie();
+}
+
int timeoutconnect = 60;
+int smtpfd;
+int timeout = 1200;
-void getcontrols()
+int saferead(fd,buf,len) int fd; char *buf; int len;
{
- int r;
- if (control_init() == -1)
- { if (errno == error_nomem) temp_nomem(); temp_control(); }
-
- if (control_readint(&timeout,"control/timeoutremote") == -1)
- { if (errno == error_nomem) temp_nomem(); temp_control(); }
- if (control_readint(&timeoutconnect,"control/timeoutconnect") == -1)
- { if (errno == error_nomem) temp_nomem(); temp_control(); }
-
- r = control_rldef(&helohost,"control/helohost",1,(char *) 0);
- if (r == -1) if (errno == error_nomem) temp_nomem();
- if (r != 1) temp_control();
-
- switch(control_readfile(&routes,"control/smtproutes",0))
- {
- case -1:
- if (errno == error_nomem) temp_nomem(); temp_control();
- case 0:
- if (!constmap_init(&maproutes,"",0,1)) temp_nomem(); break;
- case 1:
- if (!constmap_init(&maproutes,routes.s,routes.len,1)) temp_nomem(); break;
- }
+ int r;
+ r = timeoutread(timeout,smtpfd,buf,len);
+ if (r <= 0) dropped();
+ return r;
+}
+int safewrite(fd,buf,len) int fd; char *buf; int len;
+{
+ int r;
+ r = timeoutwrite(timeout,smtpfd,buf,len);
+ if (r <= 0) dropped();
+ return r;
}
+char inbuf[1024];
+substdio ssin = SUBSTDIO_FDBUF(read,0,inbuf,sizeof inbuf);
char smtptobuf[1024];
+substdio smtpto = SUBSTDIO_FDBUF(safewrite,-1,smtptobuf,sizeof smtptobuf);
char smtpfrombuf[128];
-stralloc smtpline = {0};
+substdio smtpfrom = SUBSTDIO_FDBUF(saferead,-1,smtpfrombuf,sizeof smtpfrombuf);
+
stralloc smtptext = {0};
-void outsmtptext()
+void get(ch)
+char *ch;
{
- int i;
- if (smtptext.s) if (smtptext.len) if (smtptext.len < HUGESMTPTEXT)
- {
- if (substdio_puts(subfdout,"Remote host said: ") == -1) _exit(0);
- for (i = 0;i < smtptext.len;++i)
- if (!smtptext.s[i]) smtptext.s[i] = '?';
- if (substdio_put(subfdout,smtptext.s,smtptext.len) == -1) _exit(0);
- smtptext.len = 0;
- }
+ substdio_get(&smtpfrom,ch,1);
+ if (*ch != '\r')
+ if (smtptext.len < HUGESMTPTEXT)
+ if (!stralloc_append(&smtptext,ch)) temp_nomem();
}
-unsigned long smtpcode(ss)
-substdio *ss;
+unsigned long smtpcode()
{
- int match;
- unsigned long code;
-
- if (!stralloc_copys(&smtptext,"")) return 421;
- do
- {
- if (getln(ss,&smtpline,&match,'\n') != 0) return 421;
- if (!match) return 421;
- if ((smtpline.len >= 2) && (smtpline.s[smtpline.len - 2] == '\r'))
- {
- smtpline.s[smtpline.len - 2] = '\n';
- --smtpline.len;
- }
- if (!stralloc_cat(&smtptext,&smtpline)) return 421;
- if (scan_nbblong(smtpline.s,smtpline.len,10,0,&code) != 3) return 421;
- if (smtpline.len == 3) return code;
+ unsigned char ch;
+ unsigned long code;
+
+ if (!stralloc_copys(&smtptext,"")) temp_nomem();
+
+ get(&ch); code = ch - '0';
+ get(&ch); code = code * 10 + (ch - '0');
+ get(&ch); code = code * 10 + (ch - '0');
+ for (;;) {
+ get(&ch);
+ if (ch != '-') break;
+ while (ch != '\n') get(&ch);
+ get(&ch);
+ get(&ch);
+ get(&ch);
}
- while (smtpline.s[3] == '-');
+ while (ch != '\n') get(&ch);
- return code;
+ return code;
}
-void outhost()
-{
- char x[IPFMT];
-
- x[ip_fmt(x,&partner)] = 0;
- out(x);
-}
-
-void writeerr()
+void outsmtptext()
{
- out("ZConnected to "); outhost();
- out(" but communications failed. (#4.4.2)\n");
- zerodie();
+ int i;
+ if (smtptext.s) if (smtptext.len) {
+ out("Remote host said: ");
+ for (i = 0;i < smtptext.len;++i)
+ if (!smtptext.s[i]) smtptext.s[i] = '?';
+ if (substdio_put(subfdoutsmall,smtptext.s,smtptext.len) == -1) _exit(0);
+ smtptext.len = 0;
+ }
}
-void quit(ssto,ssfrom)
-substdio *ssto;
-substdio *ssfrom;
+void quit(prepend,append)
+char *prepend;
+char *append;
{
- outsmtptext();
- if (substdio_putsflush(ssto,"QUIT\r\n") != -1)
- smtpcode(ssfrom); /* protocol design stupidity */
- zerodie();
+ substdio_putsflush(&smtpto,"QUIT\r\n");
+ /* waiting for remote side is just too ridiculous */
+ out(prepend);
+ outhost();
+ out(append);
+ out(".\n");
+ outsmtptext();
+ zerodie();
}
-stralloc dataline = {0};
-
-void blast(ssto,ssfrom)
-substdio *ssto;
-substdio *ssfrom;
+void blast()
{
- int match;
-
- for (;;)
- {
- if (getln(ssfrom,&dataline,&match,'\n') != 0) temp_read();
- if (!match && !dataline.len) break;
- if (!match) perm_partialline();
- --dataline.len;
- if (dataline.len && (dataline.s[0] == '.'))
- if (substdio_put(ssto,".",1) == -1) writeerr();
- if (substdio_put(ssto,dataline.s,dataline.len) == -1) writeerr();
- if (substdio_put(ssto,"\r\n",2) == -1) writeerr();
+ int r;
+ char ch;
+
+ for (;;) {
+ r = substdio_get(&ssin,&ch,1);
+ if (r == 0) break;
+ if (r == -1) temp_read();
+ if (ch == '.')
+ substdio_put(&smtpto,".",1);
+ while (ch != '\n') {
+ substdio_put(&smtpto,&ch,1);
+ r = substdio_get(&ssin,&ch,1);
+ if (r == 0) perm_partialline();
+ if (r == -1) temp_read();
+ }
+ substdio_put(&smtpto,"\r\n",2);
}
- if (substdio_put(ssto,".\r\n",3) == -1) writeerr();
- if (substdio_flush(ssto) == -1) writeerr();
+
+ flagcritical = 1;
+ substdio_put(&smtpto,".\r\n",3);
+ substdio_flush(&smtpto);
}
stralloc recip = {0};
-void smtp(fd)
-int fd;
+void smtp()
{
- substdio ssto;
- substdio ssfrom;
- unsigned long code;
- int flaganyrecipok;
- int i;
-
- substdio_fdbuf(&ssto,timeoutwrite,TIMEOUTWRITE(timeout,fd),smtptobuf,sizeof(smtptobuf));
- substdio_fdbuf(&ssfrom,timeoutread,TIMEOUTREAD(timeout,fd),smtpfrombuf,sizeof(smtpfrombuf));
-
- if (smtpcode(&ssfrom) != 220)
- {
- out("ZConnected to "); outhost(); out(" but greeting failed.\n");
- quit(&ssto,&ssfrom);
- }
-
- if (substdio_puts(&ssto,"HELO ") == -1) writeerr();
- if (substdio_put(&ssto,helohost.s,helohost.len) == -1) writeerr();
- if (substdio_puts(&ssto,"\r\n") == -1) writeerr();
- if (substdio_flush(&ssto) == -1) writeerr();
-
- if (smtpcode(&ssfrom) != 250)
- {
- out("ZConnected to "); outhost(); out(" but my name was rejected.\n");
- quit(&ssto,&ssfrom);
- }
-
- if (substdio_puts(&ssto,"MAIL FROM:<") == -1) writeerr();
- if (substdio_put(&ssto,sender.s,sender.len) == -1) writeerr();
- if (substdio_puts(&ssto,">\r\n") == -1) writeerr();
- if (substdio_flush(&ssto) == -1) writeerr();
-
- code = smtpcode(&ssfrom);
- if (code >= 500)
- {
- out("DConnected to "); outhost(); out(" but sender was rejected.\n");
- quit(&ssto,&ssfrom);
- }
- if (code >= 400)
- {
- out("ZConnected to "); outhost(); out(" but sender was rejected.\n");
- quit(&ssto,&ssfrom);
- }
-
- flaganyrecipok = 0;
- for (i = 0;i < reciplist.len;++i)
- {
- if (substdio_puts(&ssto,"RCPT TO:<") == -1) writeerr();
- if (substdio_put(&ssto,reciplist.sa[i].s,reciplist.sa[i].len) == -1) writeerr();
- if (substdio_puts(&ssto,">\r\n") == -1) writeerr();
- if (substdio_flush(&ssto) == -1) writeerr();
-
- code = smtpcode(&ssfrom);
- if (code == 421)
- {
- out("ZConnected to "); outhost(); out(" but connection died.\n");
- quit(&ssto,&ssfrom);
- }
- if (code >= 500)
- {
- out("h"); outhost(); out(" does not like recipient.\n");
- outsmtptext(); zero();
+ unsigned long code;
+ int flagbother;
+ int i;
+
+ if (smtpcode() != 220) quit("ZConnected to "," but greeting failed");
+
+ substdio_puts(&smtpto,"HELO ");
+ substdio_put(&smtpto,helohost.s,helohost.len);
+ substdio_puts(&smtpto,"\r\n");
+ substdio_flush(&smtpto);
+ if (smtpcode() != 250) quit("ZConnected to "," but my name was rejected");
+
+ substdio_puts(&smtpto,"MAIL FROM:<");
+ substdio_put(&smtpto,sender.s,sender.len);
+ substdio_puts(&smtpto,">\r\n");
+ substdio_flush(&smtpto);
+ code = smtpcode();
+ if (code >= 500) quit("DConnected to "," but sender was rejected");
+ if (code >= 400) quit("ZConnected to "," but sender was rejected");
+
+ flagbother = 0;
+ for (i = 0;i < reciplist.len;++i) {
+ substdio_puts(&smtpto,"RCPT TO:<");
+ substdio_put(&smtpto,reciplist.sa[i].s,reciplist.sa[i].len);
+ substdio_puts(&smtpto,">\r\n");
+ substdio_flush(&smtpto);
+ code = smtpcode();
+ if (code >= 500) {
+ out("h"); outhost(); out(" does not like recipient.\n");
+ outsmtptext(); zero();
}
- else if (code >= 400)
- {
- out("s"); outhost(); out(" does not like recipient.\n");
- outsmtptext(); zero();
+ else if (code >= 400) {
+ out("s"); outhost(); out(" does not like recipient.\n");
+ outsmtptext(); zero();
}
- else
- {
- out("r"); zero();
- flaganyrecipok = 1;
+ else {
+ out("r"); zero();
+ flagbother = 1;
}
}
-
- if (!flaganyrecipok)
- {
- out("DGiving up.\n");
- quit(&ssto,&ssfrom);
- }
-
- if (substdio_putsflush(&ssto,"DATA\r\n") == -1) writeerr();
-
- code = smtpcode(&ssfrom);
- if (code == 421)
- {
- out("ZConnected to "); outhost(); out(" but connection died.\n");
- quit(&ssto,&ssfrom);
- }
- if (code >= 500)
- {
- out("D"); outhost(); out(" failed on DATA command.\n");
- quit(&ssto,&ssfrom);
- }
- if (code >= 400)
- {
- out("Z"); outhost(); out(" failed on DATA command.\n");
- quit(&ssto,&ssfrom);
- }
-
- blast(&ssto,subfdin);
-
- code = smtpcode(&ssfrom);
- if (code == 421)
- {
- out("ZConnected to "); outhost(); out(" but connection died. Possible duplicate!\n");
- quit(&ssto,&ssfrom);
- }
- if (code >= 500)
- {
- out("D"); outhost(); out(" failed after I sent the message.\n");
- quit(&ssto,&ssfrom);
- }
- if (code >= 400)
- {
- out("Z"); outhost(); out(" failed after I sent the message.\n");
- quit(&ssto,&ssfrom);
- }
-
- out("K"); outhost(); out(" accepted message.\n");
- quit(&ssto,&ssfrom);
+ if (!flagbother) quit("DGiving up on ","");
+
+ substdio_putsflush(&smtpto,"DATA\r\n");
+ code = smtpcode();
+ if (code >= 500) quit("D"," failed on DATA command");
+ if (code >= 400) quit("Z"," failed on DATA command");
+
+ blast();
+ code = smtpcode();
+ flagcritical = 0;
+ if (code >= 500) quit("D"," failed after I sent the message");
+ if (code >= 400) quit("Z"," failed after I sent the message");
+ quit("K"," accepted message");
}
stralloc canonhost = {0};
int *flagalias;
int flagcname;
{
- int j;
-
- *flagalias = flagcname;
-
- j = str_rchr(s,'@');
- if (!s[j])
- {
- if (!stralloc_copys(saout,s)) temp_nomem();
- return;
+ int j;
+
+ *flagalias = flagcname;
+
+ j = str_rchr(s,'@');
+ if (!s[j]) {
+ if (!stralloc_copys(saout,s)) temp_nomem();
+ return;
}
- if (!stralloc_copys(&canonbox,s)) temp_nomem();
- canonbox.len = j;
- if (!quote(saout,&canonbox)) temp_nomem();
- if (!stralloc_cats(saout,"@")) temp_nomem();
-
- if (!stralloc_copys(&canonhost,s + j + 1)) temp_nomem();
- if (flagcname)
- switch(dns_cname(&canonhost))
- {
- case 0: *flagalias = 0; break;
- case DNS_MEM: temp_nomem();
- case DNS_SOFT: temp_dnscanon();
- case DNS_HARD: ; /* alias loop, not our problem */
+ if (!stralloc_copys(&canonbox,s)) temp_nomem();
+ canonbox.len = j;
+ if (!quote(saout,&canonbox)) temp_nomem();
+ if (!stralloc_cats(saout,"@")) temp_nomem();
+
+ if (!stralloc_copys(&canonhost,s + j + 1)) temp_nomem();
+ if (flagcname)
+ switch(dns_cname(&canonhost)) {
+ case 0: *flagalias = 0; break;
+ case DNS_MEM: temp_nomem();
+ case DNS_SOFT: temp_dnscanon();
+ case DNS_HARD: ; /* alias loop, not our problem */
}
- if (!stralloc_cat(saout,&canonhost)) temp_nomem();
+ if (!stralloc_cat(saout,&canonhost)) temp_nomem();
+}
+
+void getcontrols()
+{
+ if (control_init() == -1) temp_control();
+ if (control_readint(&timeout,"control/timeoutremote") == -1) temp_control();
+ if (control_readint(&timeoutconnect,"control/timeoutconnect") == -1)
+ temp_control();
+ if (control_rldef(&helohost,"control/helohost",1,(char *) 0) != 1)
+ temp_control();
+ switch(control_readfile(&routes,"control/smtproutes",0)) {
+ case -1:
+ temp_control();
+ case 0:
+ if (!constmap_init(&maproutes,"",0,1)) temp_nomem(); break;
+ case 1:
+ if (!constmap_init(&maproutes,routes.s,routes.len,1)) temp_nomem(); break;
+ }
}
void main(argc,argv)
int argc;
char **argv;
{
- static ipalloc ip = {0};
- int i;
- unsigned long random;
- char **recips;
- unsigned long prefme;
- int flagallaliases;
- int flagalias;
- char *relayhost;
-
- sig_pipeignore();
- if (argc < 4) perm_usage();
- if (chdir(auto_qmail) == -1) temp_chdir();
- getcontrols();
-
-
- if (!stralloc_copys(&host,argv[1])) temp_nomem();
-
- relayhost = 0;
- for (i = 0;i <= host.len;++i)
- if ((i == 0) || (i == host.len) || (host.s[i] == '.'))
- if (relayhost = constmap(&maproutes,host.s + i,host.len - i))
- break;
- if (relayhost && !*relayhost) relayhost = 0;
-
- if (relayhost)
- {
- i = str_chr(relayhost,':');
- if (relayhost[i])
- {
- scan_ulong(relayhost + i + 1,&port);
- relayhost[i] = 0;
+ static ipalloc ip = {0};
+ int i;
+ unsigned long random;
+ char **recips;
+ unsigned long prefme;
+ int flagallaliases;
+ int flagalias;
+ char *relayhost;
+
+ sig_pipeignore();
+ if (argc < 4) perm_usage();
+ if (chdir(auto_qmail) == -1) temp_chdir();
+ getcontrols();
+
+
+ if (!stralloc_copys(&host,argv[1])) temp_nomem();
+
+ relayhost = 0;
+ for (i = 0;i <= host.len;++i)
+ if ((i == 0) || (i == host.len) || (host.s[i] == '.'))
+ if (relayhost = constmap(&maproutes,host.s + i,host.len - i))
+ break;
+ if (relayhost && !*relayhost) relayhost = 0;
+
+ if (relayhost) {
+ i = str_chr(relayhost,':');
+ if (relayhost[i]) {
+ scan_ulong(relayhost + i + 1,&port);
+ relayhost[i] = 0;
}
- if (!stralloc_copys(&host,relayhost)) temp_nomem();
+ if (!stralloc_copys(&host,relayhost)) temp_nomem();
}
- addrmangle(&sender,argv[2],&flagalias,!relayhost);
-
- if (!saa_readyplus(&reciplist,0)) temp_nomem();
- if (ipme_init() != 1) temp_oserr();
-
- flagallaliases = 1;
- recips = argv + 3;
- while (*recips)
- {
- if (!saa_readyplus(&reciplist,1)) temp_nomem();
- reciplist.sa[reciplist.len] = sauninit;
- addrmangle(reciplist.sa + reciplist.len,*recips,&flagalias,!relayhost);
- if (!flagalias) flagallaliases = 0;
- ++reciplist.len;
- ++recips;
+ addrmangle(&sender,argv[2],&flagalias,0);
+
+ if (!saa_readyplus(&reciplist,0)) temp_nomem();
+ if (ipme_init() != 1) temp_oserr();
+
+ flagallaliases = 1;
+ recips = argv + 3;
+ while (*recips) {
+ if (!saa_readyplus(&reciplist,1)) temp_nomem();
+ reciplist.sa[reciplist.len] = sauninit;
+ addrmangle(reciplist.sa + reciplist.len,*recips,&flagalias,!relayhost);
+ if (!flagalias) flagallaliases = 0;
+ ++reciplist.len;
+ ++recips;
}
-
- random = now() + (getpid() << 16);
- switch (relayhost ? dns_ip(&ip,&host) : dns_mxip(&ip,&host,random))
- {
- case DNS_MEM: temp_nomem();
- case DNS_SOFT: temp_dns();
- case DNS_HARD: perm_dns();
- case 1:
- if (ip.len <= 0) temp_dns();
+
+ random = now() + (getpid() << 16);
+ switch (relayhost ? dns_ip(&ip,&host) : dns_mxip(&ip,&host,random)) {
+ case DNS_MEM: temp_nomem();
+ case DNS_SOFT: temp_dns();
+ case DNS_HARD: perm_dns();
+ case 1:
+ if (ip.len <= 0) temp_dns();
}
-
- if (ip.len <= 0) perm_nomx();
-
- prefme = 100000;
- for (i = 0;i < ip.len;++i)
- if (ipme_is(&ip.ix[i].ip))
- if (ip.ix[i].pref < prefme)
- prefme = ip.ix[i].pref;
-
- if (relayhost) prefme = 300000;
- if (flagallaliases) prefme = 500000;
-
- for (i = 0;i < ip.len;++i)
- if (ip.ix[i].pref < prefme)
- break;
-
- if (i >= ip.len)
- perm_ambigmx();
-
- for (i = 0;i < ip.len;++i) if (ip.ix[i].pref < prefme)
- {
- int s;
-
- if (tcpto(&ip.ix[i].ip)) continue;
-
- s = socket(AF_INET,SOCK_STREAM,0);
- if (s == -1) temp_oserr();
-
- if (timeoutconn(s,&ip.ix[i].ip,(unsigned int) port,timeoutconnect) == 0)
- {
- tcpto_err(&ip.ix[i].ip,0);
- partner = ip.ix[i].ip;
- smtp(s); /* does not return */
+
+ if (ip.len <= 0) perm_nomx();
+
+ prefme = 100000;
+ for (i = 0;i < ip.len;++i)
+ if (ipme_is(&ip.ix[i].ip))
+ if (ip.ix[i].pref < prefme)
+ prefme = ip.ix[i].pref;
+
+ if (relayhost) prefme = 300000;
+ if (flagallaliases) prefme = 500000;
+
+ for (i = 0;i < ip.len;++i)
+ if (ip.ix[i].pref < prefme)
+ break;
+
+ if (i >= ip.len)
+ perm_ambigmx();
+
+ for (i = 0;i < ip.len;++i) if (ip.ix[i].pref < prefme) {
+ if (tcpto(&ip.ix[i].ip)) continue;
+
+ smtpfd = socket(AF_INET,SOCK_STREAM,0);
+ if (smtpfd == -1) temp_oserr();
+
+ if (timeoutconn(smtpfd,&ip.ix[i].ip,(unsigned int) port,timeoutconnect) == 0) {
+ tcpto_err(&ip.ix[i].ip,0);
+ partner = ip.ix[i].ip;
+ smtp(); /* does not return */
}
- tcpto_err(&ip.ix[i].ip,errno == error_timeout);
- close(s);
+ tcpto_err(&ip.ix[i].ip,errno == error_timeout);
+ close(smtpfd);
}
-
- temp_noconn();
+
+ temp_noconn();
}