1 files changed, 14 insertions, 0 deletions

diff --git a/common/stringop.c b/common/stringop.c
index d9ae9925..d2c91c24 100644
--- a/common/stringop.c
+++ b/common/stringop.c
@@ -401,3 +401,17 @@ char *argsep(char **stringp, const char *delim) {
         found:
         return start;
 }
+
+const char *strcasestr(const char *haystack, const char *needle) {
+        size_t needle_len = strlen(needle);
+        const char *pos = haystack;
+        const char *end = pos + strlen(haystack) - needle_len;
+
+        while (pos <= end) {
+                if (strncasecmp(pos, needle, needle_len) == 0) {
+                        return pos;
+                }
+                ++pos;
+        }
+        return NULL;
+}