From 885f5974cdf65b59415837ae97f5a14ef1350670 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Tue, 9 Dec 2025 19:20:15 +0100
Subject: feat: add gzip and new headers

---
 lib/libc/stdio/fmemopen.c |  1 +
 lib/libc/stdio/vfprintf.c | 27 +++++++++++++++------------
 2 files changed, 16 insertions(+), 12 deletions(-)

(limited to 'lib/libc/stdio')

diff --git a/lib/libc/stdio/fmemopen.c b/lib/libc/stdio/fmemopen.c
index 6830dcbe..b1fa0f8a 100644
--- a/lib/libc/stdio/fmemopen.c
+++ b/lib/libc/stdio/fmemopen.c
@@ -30,6 +30,7 @@ FILE *fmemopen(void *restrict buf, size_t max_size, const char *restrict mode)
 	} else if (mode[0] == 'a') {
 		flags = O_WRONLY | O_CREAT | O_APPEND;
 	} else {
+		free(f);
 		errno = EINVAL;
 		return NULL;
 	}
diff --git a/lib/libc/stdio/vfprintf.c b/lib/libc/stdio/vfprintf.c
index 495fb9ea..90e60f7f 100644
--- a/lib/libc/stdio/vfprintf.c
+++ b/lib/libc/stdio/vfprintf.c
@@ -325,11 +325,12 @@ int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap)
 				int pos = 0;
 
 				if (isnan(val)) {
-					strcpy(buf,
-					       (*ptr == 'F' || *ptr == 'E' ||
-						*ptr == 'G') ?
-						       "NAN" :
-						       "nan");
+					strlcpy(buf,
+						(*ptr == 'F' || *ptr == 'E' ||
+						 *ptr == 'G') ?
+							"NAN" :
+							"nan",
+						sizeof(buf));
 					l = 3;
 					break;
 				}
@@ -341,11 +342,12 @@ int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap)
 					} else if (flags & FLAG_SPACE) {
 						buf[pos++] = ' ';
 					}
-					strcpy(buf + pos,
-					       (*ptr == 'F' || *ptr == 'E' ||
-						*ptr == 'G') ?
-						       "INF" :
-						       "inf");
+					strlcpy(buf + pos,
+						(*ptr == 'F' || *ptr == 'E' ||
+						 *ptr == 'G') ?
+							"INF" :
+							"inf",
+						sizeof(buf) - pos);
 					l = pos + 3;
 					break;
 				}
@@ -607,8 +609,9 @@ int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap)
 				}
 
 				if (val == 0.0) {
-					strcpy(buf + pos,
-					       upper ? "0X0P+0" : "0x0p+0");
+					strlcpy(buf + pos,
+						upper ? "0X0P+0" : "0x0p+0",
+						sizeof(buf) - pos);
 					l = pos + 6;
 					break;
 				}
-- 
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