From 1b7b334da7823ace48e46020c6c2b814ea6a8bd8 Mon Sep 17 00:00:00 2001
From: Yunshu Ouyang <61579667+yooyoo9@users.noreply.github.com>
Date: Mon, 7 Sep 2020 10:30:09 +0200
Subject: [PATCH] Add wrappers for getpwnam and getgrnam (#4419)

---
 projects/nginx/build.sh        |  2 +-
 projects/nginx/fuzz/wrappers.c | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/projects/nginx/build.sh b/projects/nginx/build.sh
index 064a91739..341b0e5ac 100644
--- a/projects/nginx/build.sh
+++ b/projects/nginx/build.sh
@@ -24,7 +24,7 @@ rm -rf genfiles && mkdir genfiles && $SRC/LPM/external.protobuf/bin/protoc http_
 cd ../..
 
 auto/configure \
-    --with-ld-opt="-Wl,--wrap=listen -Wl,--wrap=setsockopt -Wl,--wrap=bind -Wl,--wrap=shutdown -Wl,--wrap=connect" \
+    --with-ld-opt="-Wl,--wrap=listen -Wl,--wrap=setsockopt -Wl,--wrap=bind -Wl,--wrap=shutdown -Wl,--wrap=connect -Wl,--wrap=getpwnam -Wl,--wrap=getgrnam" \
     --with-http_v2_module
 make -f objs/Makefile fuzzers
 
diff --git a/projects/nginx/fuzz/wrappers.c b/projects/nginx/fuzz/wrappers.c
index ec8e3b7db..a351c37a3 100644
--- a/projects/nginx/fuzz/wrappers.c
+++ b/projects/nginx/fuzz/wrappers.c
@@ -15,6 +15,8 @@
 ////////////////////////////////////////////////////////////////////////////////
 #include <sys/socket.h>
 #include <sys/types.h>
+#include <grp.h>
+#include <pwd.h>
 
 int __wrap_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
   return 0;
@@ -32,3 +34,15 @@ int __wrap_setsockopt(int fd, int level, int optname, const void *optval,
                       socklen_t optlen) {
   return 0;
 }
+
+struct passwd *__wrap_getpwnam(const char *name){
+  struct passwd *pwd = (struct passwd *) calloc(1, sizeof(struct passwd));
+  pwd->pw_uid = 1;
+  return pwd;
+}
+
+struct group *__wrap_getgrnam(const char *name){
+  struct group *grp = (struct group *) calloc(1, sizeof(struct group));
+  grp->gr_gid = 1;
+  return grp;
+}