From: Boyuan Yang <byang@debian.org>
Date: Sun, 15 Aug 2021 13:21:32 -0400
Subject: Install conffile as proxychains4.conf

Forwarded: not-needed
Last-Update: 2021-08-15

In order to co-exist with old proxychains package, we
will need to prevent conffile collision. The best solution
in my mind is to use another name for conffile.

With this patch, program will search for $SYSCONFDIR/proxychains4.conf
and /etc/proxychains4.conf as a fallback. The conffile provided
will be installed as /etc/proxychains4.conf.
---
 README       |  2 ++
 src/common.c | 11 +++++++++++
 src/common.h |  1 +
 3 files changed, 14 insertions(+)

diff --git a/README b/README
index da413eb..2755a5d 100644
--- a/README
+++ b/README
@@ -216,8 +216,10 @@ proxychains looks for config file in following order:
 2)	./proxychains.conf
 3)	$(HOME)/.proxychains/proxychains.conf
 4)	$(sysconfdir)/proxychains.conf  **
+5)	$(sysconfdir)/proxychains4.conf *** 
 
 ** usually /etc/proxychains.conf
+*** usually /etc/proxychains4.conf
 
 Usage Example:
 
diff --git a/src/common.c b/src/common.c
index 1da1c45..d52c312 100644
--- a/src/common.c
+++ b/src/common.c
@@ -123,6 +123,17 @@ char *get_config_path(char* default_path, char* pbuf, size_t bufsize) {
 	if(check_path(path))
 		goto have;
 
+	// priority 6: $SYSCONFDIR/proxychains4.conf
+	path = SYSCONFDIR "/" PROXYCHAINS_CONF_FILE_FALLBACK;
+	if(check_path(path))
+		goto have;
+
+
+	// priority 7: /etc/proxychains4.conf
+	path = "/etc/" PROXYCHAINS_CONF_FILE_FALLBACK;
+	if(check_path(path))
+		goto have;
+
 	perror("couldnt find configuration file");
 	exit(1);
 
diff --git a/src/common.h b/src/common.h
index 91468bc..eaec390 100644
--- a/src/common.h
+++ b/src/common.h
@@ -4,6 +4,7 @@
 #define PROXYCHAINS_CONF_FILE_ENV_VAR "PROXYCHAINS_CONF_FILE"
 #define PROXYCHAINS_QUIET_MODE_ENV_VAR "PROXYCHAINS_QUIET_MODE"
 #define PROXYCHAINS_CONF_FILE "proxychains.conf"
+#define PROXYCHAINS_CONF_FILE_FALLBACK "proxychains4.conf"
 #define LOG_PREFIX "[proxychains] "
 #ifndef SYSCONFDIR
 #define SYSCONFDIR "/etc"