X-Git-Url: http://www.dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fhtparser.c;h=348a9407f3a9733ff66e3ded9e34248dd5d9c1d4;hb=5599a52ae7067a2c2afd0fda9edd3046043847c1;hp=73d940449e3a9e71b17db39dd22ade50dc635920;hpb=fc253e2fa06742656bd018981ec000799c956391;p=ashd.git

diff --git a/src/htparser.c b/src/htparser.c
index 73d9404..348a940 100644
--- a/src/htparser.c
+++ b/src/htparser.c
@@ -40,7 +40,6 @@
 #include "htparser.h"
 
 static int plex;
-static char *pidfile = NULL;
 static int daemonize, usesyslog;
 struct mtbuf listeners;
 
@@ -152,7 +151,7 @@ static off_t passdata(struct bufio *in, struct bufio *out, off_t max)
 
 static int recvchunks(struct bufio *in, struct bufio *out)
 {
-    size_t read, chlen;
+    ssize_t read, chlen;
     int c, r;
     
     while(1) {
@@ -305,14 +304,58 @@ done:
     return(ret);
 }
 
-void serve(struct bufio *in, struct conn *conn)
+static void passduplex(struct bufio *a, int afd, struct bufio *b, int bfd)
+{
+    struct selected pfd[4], sel;
+    struct bufio *sio;
+    int n, ev;
+    
+    while(!bioeof(a) && !bioeof(b)) {
+	biocopybuf(b, a);
+	biocopybuf(a, b);
+	n = 0;
+	if(!a->eof) {
+	    ev = 0;
+	    if(biorspace(a))
+		ev |= EV_READ;
+	    if(biowdata(a))
+		ev |= EV_WRITE;
+	    if(ev)
+		pfd[n++] = (struct selected){.fd = afd, .ev = ev};
+	}
+	if(!b->eof) {
+	    ev = 0;
+	    if(!b->eof && biorspace(b))
+		ev |= EV_READ;
+	    if(biowdata(b))
+		ev |= EV_WRITE;
+	    if(ev)
+		pfd[n++] = (struct selected){.fd = bfd, .ev = ev};
+	}
+	if((sel = mblock(600, n, pfd)).ev == 0)
+	    break;
+	if(sel.fd == afd)
+	    sio = a;
+	else if(sel.fd == bfd)
+	    sio = b;
+	else
+	    break;
+	if((sel.ev & EV_READ) && (biofillsome(sio) < 0))
+	    break;
+	if((sel.ev & EV_WRITE) && (bioflushsome(sio) < 0))
+	    break;
+    }
+}
+
+void serve(struct bufio *in, int infd, struct conn *conn)
 {
     int pfds[2];
-    struct bufio *out;
+    struct bufio *out, *dout;
+    struct stdiofd *outi;
     struct hthead *req, *resp;
     char *hd, *id;
     off_t dlen;
-    int keep;
+    int keep, duplex;
     
     id = connid();
     out = NULL;
@@ -335,7 +378,7 @@ void serve(struct bufio *in, struct conn *conn)
 	if(sendreq(plex, req, pfds[0]))
 	    break;
 	close(pfds[0]);
-	out = mtbioopen(pfds[1], 1, 600, "r+", NULL);
+	out = mtbioopen(pfds[1], 1, 600, "r+", &outi);
 
 	if(getheader(req, "content-type") != NULL) {
 	    if((hd = getheader(req, "content-length")) != NULL) {
@@ -363,8 +406,20 @@ void serve(struct bufio *in, struct conn *conn)
 	
 	if(!getheader(resp, "server"))
 	    headappheader(resp, "Server", sprintf3("ashd/%s", VERSION));
+	duplex = hasheader(resp, "x-ash-switch", "duplex");
+	trimx(resp);
 
-	if(!strcasecmp(req->ver, "HTTP/1.0")) {
+	if(duplex) {
+	    if(outi->rights < 0)
+		break;
+	    writerespb(in, resp);
+	    bioprintf(in, "\r\n");
+	    dout = mtbioopen(outi->rights, 1, 600, "r+", NULL);
+	    passduplex(in, infd, dout, outi->rights);
+	    outi->rights = -1;
+	    bioclose(dout);
+	    break;
+	} else if(!strcasecmp(req->ver, "HTTP/1.0")) {
 	    if(!strcasecmp(req->method, "head")) {
 		keep = http10keep(req, resp);
 		writerespb(in, resp);
@@ -547,7 +602,7 @@ int main(int argc, char **argv)
 {
     int c, d;
     int i, s1;
-    char *root;
+    char *root, *pidfile, *pidtmp;
     FILE *pidout;
     struct passwd *pwent;
     
@@ -600,8 +655,14 @@ int main(int argc, char **argv)
     bufadd(listeners, mustart(plexwatch, plex));
     pidout = NULL;
     if(pidfile != NULL) {
-	if((pidout = fopen(pidfile, "w")) == NULL) {
-	    flog(LOG_ERR, "could not open %s for writing: %s", pidfile, strerror(errno));
+	pidtmp = sprintf3("%s.new", pidfile);
+	if((pidout = fopen(pidtmp, "w")) == NULL) {
+	    flog(LOG_ERR, "could not open %s for writing: %s", pidtmp, strerror(errno));
+	    return(1);
+	}
+	if(rename(pidtmp, pidfile)) {
+	    flog(LOG_ERR, "could not overwrite %s: %s", pidfile, strerror(errno));
+	    unlink(pidtmp);
 	    return(1);
 	}
     }
@@ -632,7 +693,7 @@ int main(int argc, char **argv)
     }
     if(pidout != NULL) {
 	fprintf(pidout, "%i\n", getpid());
-	fclose(pidout);
+	fflush(pidout);
     }
     d = 0;
     while(!d) {
@@ -645,11 +706,17 @@ int main(int argc, char **argv)
 		while(listeners.d > 0)
 		    resume(listeners.b[0], 0);
 		flog(LOG_INFO, "no longer listening");
+		if(pidout != NULL) {
+		    putc('\n', pidout);
+		    fflush(pidout);
+		}
 	    } else {
 		d = 1;
 	    }
 	    break;
 	}
     }
+    if(pidout != NULL)
+	ftruncate(fileno(pidout), 0);
     return(0);
 }