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authorJohn Denker <jsd@av8n.com>2012-06-02 01:58:45 (GMT)
committerJohn Denker <jsd@av8n.com>2012-06-02 01:58:45 (GMT)
commitb732a73bc773789894466b0e5320b2f1fe42c7e9 (patch)
tree385358983f064a1f10a5080b33a3ba13010886db /tcp-env.c
parent634d365a03cb0581a062cd3cf4db9ae69f1cde26 (diff)
original, as downloaded from http://www.qmail.org/netqmail-1.06.tar.gz
Diffstat (limited to 'tcp-env.c')
-rw-r--r--tcp-env.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/tcp-env.c b/tcp-env.c
new file mode 100644
index 0000000..feb85cc
--- /dev/null
+++ b/tcp-env.c
@@ -0,0 +1,129 @@
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/param.h>
+#include <netinet/in.h>
+#include "sig.h"
+#include "stralloc.h"
+#include "str.h"
+#include "env.h"
+#include "fmt.h"
+#include "scan.h"
+#include "subgetopt.h"
+#include "ip.h"
+#include "dns.h"
+#include "byte.h"
+#include "remoteinfo.h"
+#include "exit.h"
+#include "case.h"
+
+void die() { _exit(111); }
+
+struct sockaddr_in salocal;
+unsigned long localport;
+struct ip_address iplocal;
+stralloc localname = {0};
+
+struct sockaddr_in saremote;
+unsigned long remoteport;
+struct ip_address ipremote;
+stralloc remotename = {0};
+
+char temp[IPFMT + FMT_ULONG];
+
+void main(argc,argv)
+int argc;
+char *argv[];
+{
+ int dummy;
+ char *proto;
+ int opt;
+ int flagremoteinfo;
+ unsigned long timeout;
+
+ sig_pipeignore();
+
+ flagremoteinfo = 1;
+ timeout = 30;
+ while ((opt = sgopt(argc,argv,"rRt:")) != sgoptdone)
+ switch(opt)
+ {
+ case 'r': flagremoteinfo = 1; break;
+ case 'R': flagremoteinfo = 0; break;
+ case 't': scan_ulong(sgoptarg,&timeout); break;
+ }
+
+ argv += sgoptind;
+ argc -= sgoptind;
+
+ if (argc < 1) die();
+ if (!env_init()) die();
+
+ proto = env_get("PROTO");
+ if (!proto || str_diff(proto,"TCP"))
+ {
+ if (!env_put("PROTO=TCP")) die();
+
+ dummy = sizeof(salocal);
+ if (getsockname(0,(struct sockaddr *) &salocal,&dummy) == -1) die();
+
+ localport = ntohs(salocal.sin_port);
+ temp[fmt_ulong(temp,localport)] = 0;
+ if (!env_put2("TCPLOCALPORT",temp)) die();
+
+ byte_copy(&iplocal,4,&salocal.sin_addr);
+ temp[ip_fmt(temp,&iplocal)] = 0;
+ if (!env_put2("TCPLOCALIP",temp)) die();
+
+ switch(dns_ptr(&localname,&iplocal))
+ {
+ case DNS_MEM: die();
+ case DNS_SOFT:
+ if (!stralloc_copys(&localname,"softdnserror")) die();
+ case 0:
+ if (!stralloc_0(&localname)) die();
+ case_lowers(localname.s);
+ if (!env_put2("TCPLOCALHOST",localname.s)) die();
+ break;
+ default:
+ if (!env_unset("TCPLOCALHOST")) die();
+ }
+
+ dummy = sizeof(saremote);
+ if (getpeername(0,(struct sockaddr *) &saremote,&dummy) == -1) die();
+
+ remoteport = ntohs(saremote.sin_port);
+ temp[fmt_ulong(temp,remoteport)] = 0;
+ if (!env_put2("TCPREMOTEPORT",temp)) die();
+
+ byte_copy(&ipremote,4,&saremote.sin_addr);
+ temp[ip_fmt(temp,&ipremote)] = 0;
+ if (!env_put2("TCPREMOTEIP",temp)) die();
+
+ switch(dns_ptr(&remotename,&ipremote))
+ {
+ case DNS_MEM: die();
+ case DNS_SOFT:
+ if (!stralloc_copys(&remotename,"softdnserror")) die();
+ case 0:
+ if (!stralloc_0(&remotename)) die();
+ case_lowers(remotename.s);
+ if (!env_put2("TCPREMOTEHOST",remotename.s)) die();
+ break;
+ default:
+ if (!env_unset("TCPREMOTEHOST")) die();
+ }
+
+ if (!env_unset("TCPREMOTEINFO")) die();
+ if (flagremoteinfo)
+ {
+ char *rinfo;
+ rinfo = remoteinfo_get(&ipremote,remoteport,&iplocal,localport,(int) timeout);
+ if (rinfo)
+ if (!env_put2("TCPREMOTEINFO",rinfo)) die();
+ }
+ }
+
+ sig_pipedefault();
+ execvp(*argv,argv);
+ die();
+}