From 013a37c8738d671d9d5f8381146d7d1e8f651762 Mon Sep 17 00:00:00 2001
From: "Rafael G. Martins" <rafael@rafaelmartins.eng.br>
Date: Sun, 3 Feb 2019 15:18:34 +0100
Subject: blogc: added username template variable

---
 configure.ac         |  2 +-
 src/blogc/funcvars.c |  4 ++++
 src/blogc/sysinfo.c  | 35 +++++++++++++++++++++++++++++++++++
 src/blogc/sysinfo.h  | 10 ++++++++++
 4 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 865f247..809082a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -220,7 +220,7 @@ AM_CONDITIONAL([USE_BGR_DEPS], [test "x$have_bgr_deps" = "xyes"])
 BASH="$ac_cv_path_bash"
 AC_SUBST(BASH)
 
-AC_CHECK_HEADERS([sys/resource.h sys/stat.h sys/time.h sys/wait.h time.h unistd.h])
+AC_CHECK_HEADERS([sys/resource.h sys/stat.h sys/time.h sys/wait.h time.h unistd.h pwd.h])
 AC_CHECK_FUNCS([gethostname])
 
 LT_LIB_M
diff --git a/src/blogc/funcvars.c b/src/blogc/funcvars.c
index 96bc3c5..beb5f8a 100644
--- a/src/blogc/funcvars.c
+++ b/src/blogc/funcvars.c
@@ -30,6 +30,10 @@ static const struct func_map {
     {"BLOGC_SYSINFO_HOSTNAME", blogc_sysinfo_inject_hostname},
 #endif
 
+#ifdef HAVE_SYSINFO_USERNAME
+    {"BLOGC_SYSINFO_USERNAME", blogc_sysinfo_inject_username},
+#endif
+
 #ifdef HAVE_SYSINFO_DATETIME
     {"BLOGC_SYSINFO_DATETIME", blogc_sysinfo_inject_datetime},
 #endif
diff --git a/src/blogc/sysinfo.c b/src/blogc/sysinfo.c
index d934483..61c8b1d 100644
--- a/src/blogc/sysinfo.c
+++ b/src/blogc/sysinfo.c
@@ -14,6 +14,14 @@
 #include <unistd.h>
 #endif /* HAVE_UNISTD_H */
 
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif /* HAVE_SYS_TYPES_H */
+
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif /* HAVE_PWD_H */
+
 #ifdef HAVE_TIME_H
 #include <time.h>
 #endif /* HAVE_TIME_H */
@@ -51,6 +59,33 @@ blogc_sysinfo_inject_hostname(bc_trie_t *global)
 }
 
 
+char*
+blogc_sysinfo_get_username(void)
+{
+#ifndef HAVE_SYSINFO_USERNAME
+    return NULL;
+#else
+    uid_t u = geteuid();
+    struct passwd *p = getpwuid(u);
+    if (p == NULL)
+        return NULL;
+
+    return bc_strdup(p->pw_name);
+#endif
+}
+
+
+void
+blogc_sysinfo_inject_username(bc_trie_t *global)
+{
+    char *username = blogc_sysinfo_get_username();
+    if (username == NULL)
+        return;
+
+    bc_trie_insert(global, "BLOGC_SYSINFO_USERNAME", username);
+}
+
+
 char*
 blogc_sysinfo_get_datetime(void)
 {
diff --git a/src/blogc/sysinfo.h b/src/blogc/sysinfo.h
index f26662a..25f2177 100644
--- a/src/blogc/sysinfo.h
+++ b/src/blogc/sysinfo.h
@@ -19,6 +19,14 @@
 #endif /* HAVE_GETHOSTNAME */
 #endif /* HAVE_UNISTD_H */
 
+#ifdef HAVE_UNISTD_H
+#ifdef HAVE_SYS_TYPES_H
+#ifdef HAVE_PWD_H
+#define HAVE_SYSINFO_USERNAME 1
+#endif /* HAVE_PWD_H */
+#endif /* HAVE_SYS_TYPES_H */
+#endif /* HAVE_UNISTD_H */
+
 #ifdef HAVE_TIME_H
 #define HAVE_SYSINFO_DATETIME 1
 #endif /* HAVE_TIME_H */
@@ -27,6 +35,8 @@
 
 char* blogc_sysinfo_get_hostname(void);
 void blogc_sysinfo_inject_hostname(bc_trie_t *global);
+char* blogc_sysinfo_get_username(void);
+void blogc_sysinfo_inject_username(bc_trie_t *global);
 char* blogc_sysinfo_get_datetime(void);
 void blogc_sysinfo_inject_datetime(bc_trie_t *global);
 
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