From 0fc6fd13c5bd44e6d595b56337a95156fd42ceea Mon Sep 17 00:00:00 2001
From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Wed, 25 Aug 2010 02:05:05 +0200
Subject: [PATCH] Added global config files to dirplex and patplex.

---
 lib/cf.c      | 20 ++++++++++++++++++++
 lib/cf.h      |  1 +
 src/dirplex.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++------
 src/patplex.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++-------
 4 files changed, 122 insertions(+), 13 deletions(-)

diff --git a/lib/cf.c b/lib/cf.c
index 3314e4a..f55a620 100644
--- a/lib/cf.c
+++ b/lib/cf.c
@@ -221,6 +221,26 @@ void freecfparser(struct cfstate *s)
     free(s);
 }
 
+char *findstdconf(char *name)
+{
+    char *path, *p, *p2, *t;
+    
+    if((path = getenv("PATH")) == NULL)
+	return(NULL);
+    path = sstrdup(path);
+    for(p = strtok(path, ":"); p != NULL; p = strtok(NULL, ":")) {
+	if((p2 = strrchr(p, '/')) == NULL)
+	    continue;
+	*p2 = 0;
+	if(!access(t = sprintf3("%s/etc/%s", p, name), R_OK)) {
+	    free(path);
+	    return(sstrdup(t));
+	}
+    }
+    free(path);
+    return(NULL);
+}
+
 static struct child *newchild(char *name, int type)
 {
     struct child *ch;
diff --git a/lib/cf.h b/lib/cf.h
index 09dad29..45e7698 100644
--- a/lib/cf.h
+++ b/lib/cf.h
@@ -24,6 +24,7 @@ void skipcfblock(struct cfstate *s);
 struct cfstate *mkcfparser(FILE *in, char *name);
 void freecfparser(struct cfstate *s);
 char **getcfline(struct cfstate *s);
+char *findstdconf(char *name);
 
 void freechild(struct child *ch);
 struct child *parsechild(struct cfstate *s);
diff --git a/src/dirplex.c b/src/dirplex.c
index fa4bae5..6595201 100644
--- a/src/dirplex.c
+++ b/src/dirplex.c
@@ -62,7 +62,8 @@ struct pattern {
     struct rule **rules;
 };
 
-struct config *cflist;
+static struct config *cflist;
+static struct config *gconfig, *lconfig;
 static time_t now;
 
 static void freepattern(struct pattern *pat)
@@ -90,7 +91,8 @@ static void freeconfig(struct config *cf)
 	cf->next->prev = cf->prev;
     if(cf == cflist)
 	cflist = cf->next;
-    free(cf->path);
+    if(cf->path != NULL)
+	free(cf->path);
     for(ch = cf->children; ch != NULL; ch = nch) {
 	nch = ch->next;
 	freechild(ch);
@@ -301,6 +303,10 @@ static struct config **getconfigs(char *file)
     free(tmp);
     if((cf = getconfig(".")) != NULL)
 	bufadd(buf, cf);
+    if(lconfig != NULL)
+	bufadd(buf, lconfig);
+    if(gconfig != NULL)
+	bufadd(buf, gconfig);
     bufadd(buf, NULL);
     return(ret = buf.b);
 }
@@ -506,17 +512,53 @@ out:
     free(path);
 }
 
+static void usage(FILE *out)
+{
+    fprintf(out, "usage: dirplex [-hN] [-c CONFIG] DIR\n");
+}
+
 int main(int argc, char **argv)
 {
+    int c;
+    int nodef;
+    char *gcf, *lcf;
     struct hthead *req;
     int fd;
     
-    if(argc < 2) {
-	flog(LOG_ERR, "usage: dirplex DIR");
+    nodef = 0;
+    lcf = NULL;
+    while((c = getopt(argc, argv, "hNc:")) >= 0) {
+	switch(c) {
+	case 'h':
+	    usage(stdout);
+	    exit(0);
+	case 'N':
+	    nodef = 1;
+	    break;
+	case 'c':
+	    lcf = optarg;
+	    break;
+	default:
+	    usage(stderr);
+	    exit(1);
+	}
+    }
+    if(argc - optind < 1) {
+	usage(stderr);
 	exit(1);
     }
-    if(chdir(argv[1])) {
-	flog(LOG_ERR, "could not change directory to %s: %s", argv[1], strerror(errno));
+    if(!nodef) {
+	if((gcf = findstdconf("ashd/dirplex.rc")) != NULL) {
+	    gconfig = readconfig(gcf);
+	    free(gcf);
+	}
+    }
+    if(lcf != NULL) {
+	if((lconfig = readconfig(lcf)) == NULL)
+	    exit(1);
+    }
+    if(chdir(argv[optind])) {
+	flog(LOG_ERR, "could not change directory to %s: %s", argv[optind], strerror(errno));
 	exit(1);
     }
     signal(SIGCHLD, SIG_IGN);
diff --git a/src/patplex.c b/src/patplex.c
index 26c6bd3..2ea28d5 100644
--- a/src/patplex.c
+++ b/src/patplex.c
@@ -63,7 +63,7 @@ struct pattern {
     char *restpat;
 };
 
-static struct config *config;
+static struct config *gconfig, *lconfig;
 
 static void freepattern(struct pattern *pat)
 {
@@ -393,11 +393,29 @@ static void serve(struct hthead *req, int fd)
     char *chnm;
     struct child *ch;
     
-    if(((chnm = findmatch(config, req, 0)) == NULL) && ((chnm = findmatch(config, req, 1)) == NULL)) {
+    chnm = NULL;
+    if(chnm == NULL)
+	chnm = findmatch(lconfig, req, 0);
+    if(chnm == NULL)
+	chnm = findmatch(lconfig, req, 1);
+    if(gconfig != NULL) {
+	if(chnm == NULL)
+	    chnm = findmatch(gconfig, req, 0);
+	if(chnm == NULL)
+	    chnm = findmatch(gconfig, req, 1);
+    }
+    if(chnm == NULL) {
 	simpleerror(fd, 404, "Not Found", "The requested resource could not be found on this server.");
 	return;
     }
-    if((ch = getchild(config, chnm)) == NULL) {
+    ch = NULL;
+    if(ch == NULL)
+	ch = getchild(lconfig, chnm);
+    if(gconfig != NULL) {
+	if(ch == NULL)
+	    ch = getchild(gconfig, chnm);
+    }
+    if(ch == NULL) {
 	flog(LOG_ERR, "child %s requested, but was not declared", chnm);
 	simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", chnm);
 	return;
@@ -407,16 +425,44 @@ static void serve(struct hthead *req, int fd)
 	simpleerror(fd, 500, "Server Error", "The request handler crashed.");
 }
 
+static void usage(FILE *out)
+{
+    fprintf(out, "usage: patplex [-hN] CONFIGFILE\n");
+}
+
 int main(int argc, char **argv)
 {
+    int c;
+    int nodef;
+    char *gcf;
     struct hthead *req;
     int fd;
-
-    if(argc < 2) {
-	flog(LOG_ERR, "usage: patplex CONFIGFILE");
+    
+    nodef = 0;
+    while((c = getopt(argc, argv, "hN")) >= 0) {
+	switch(c) {
+	case 'h':
+	    usage(stdout);
+	    exit(0);
+	case 'N':
+	    nodef = 1;
+	    break;
+	default:
+	    usage(stderr);
+	    exit(1);
+	}
+    }
+    if(argc - optind < 1) {
+	usage(stderr);
 	exit(1);
     }
-    config = readconfig(argv[1]);
+    if(!nodef) {
+	if((gcf = findstdconf("ashd/patplex.rc")) != NULL) {
+	    gconfig = readconfig(gcf);
+	    free(gcf);
+	}
+    }
+    lconfig = readconfig(argv[optind]);
     signal(SIGCHLD, SIG_IGN);
     while(1) {
 	if((fd = recvreq(0, &req)) < 0) {
-- 
2.11.0