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author0x41CEA55 <167377970+41CEA55@users.noreply.github.com>2024-04-19 18:16:40 +0300
committerGitHub <noreply@github.com>2024-04-19 17:16:40 +0200
commit1b2e2cd968876ff4e7a772bf8df2517d583d9956 (patch)
tree8676f5651e41aa935b373a740477184d2b6b23e2 /src
parente75d7a620e60fd35385793f09209f8a857d4b325 (diff)
Add strlcpy implementation (#2395)
Diffstat (limited to 'src')
-rw-r--r--src/include/ndpi_api.h12
-rw-r--r--src/lib/ndpi_main.c17
2 files changed, 29 insertions, 0 deletions
diff --git a/src/include/ndpi_api.h b/src/include/ndpi_api.h
index acc01fb0f..ca1855532 100644
--- a/src/include/ndpi_api.h
+++ b/src/include/ndpi_api.h
@@ -2245,6 +2245,18 @@ extern "C" {
void* ndpi_memmem(const void* haystack, size_t haystack_len, const void* needle,
size_t needle_len);
+ /**
+ * Copies up to -dst_len - 1- characters from -src- to -dst-, ensuring the result is
+ * null-terminated. Measures -src- length and handles potential null pointers.
+ *
+ * @par dst = destination buffer
+ * @par src = source string
+ * @par dst_len = size of the destination buffer, includes the null terminator
+ *
+ * @return Length of `src`. If greater or equal to -dst_len-, -dst- has been truncated.
+ */
+ size_t ndpi_strlcpy(char* dst, const char* src, size_t dst_len);
+
#ifdef __cplusplus
}
#endif
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index ec848a0d2..815aa2e1c 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -11504,3 +11504,20 @@ void* ndpi_memmem(const void* haystack, size_t haystack_len, const void* needle,
return NULL;
}
+
+size_t ndpi_strlcpy(char *dst, const char* src, size_t dst_len)
+{
+ if (!dst || !src) {
+ return 0;
+ }
+
+ size_t src_len = strlen(src);
+
+ if (dst_len != 0) {
+ size_t len = (src_len < dst_len - 1) ? src_len : dst_len - 1;
+ memcpy(dst, src, len);
+ dst[len] = '\0';
+ }
+
+ return src_len;
+}