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-rw-r--r--libreport/src/lib/stdio_helpers.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/libreport/src/lib/stdio_helpers.c b/libreport/src/lib/stdio_helpers.c
new file mode 100644
index 00000000..2ce20777
--- /dev/null
+++ b/libreport/src/lib/stdio_helpers.c
@@ -0,0 +1,69 @@
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 2001 Matt Krai
+ * Copyright (C) 2004 Erik Andersen <andersen@codepoet.org>
+ * Copyright (C) 2005, 2006 Rob Landley <rob@landley.net>
+ * Copyright (C) 2010 ABRT Team
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+#include "libreport.h"
+
+//TODO: add sanitizing upper limit (e.g 64K, 1M, or configurable).
+//This is why we don't use GNU's getline: it doesn't have
+//any upper sanity bound on line size.
+
+static char *xmalloc_fgets_internal(FILE *file, int *sizep)
+{
+ unsigned idx = 0;
+ char *linebuf = NULL;
+
+ while (1) {
+ char *r;
+
+ linebuf = xrealloc(linebuf, idx + 0x100);
+ r = fgets(&linebuf[idx], 0x100, file);
+ if (!r) {
+ /* need to terminate the line */
+ linebuf[idx] = '\0';
+ break;
+ }
+
+ /* stupid. fgets knows the len, it should report it somehow */
+ unsigned len = strlen(&linebuf[idx]);
+
+ idx += len;
+ if (len < 0xff || linebuf[idx - 1] == '\n')
+ break; /* we found \n or EOF */
+ }
+
+ *sizep = idx;
+
+ if (!idx) {
+ /* The very first fgets returned NULL. It's EOF (or error) */
+ free(linebuf);
+ linebuf = NULL;
+ }
+ return linebuf;
+}
+
+char *xmalloc_fgets(FILE *file)
+{
+ int sz;
+ char *r = xmalloc_fgets_internal(file, &sz);
+ if (!r)
+ return r;
+ return xrealloc(r, sz + 1);
+}
+
+char *xmalloc_fgetline(FILE *file)
+{
+ int sz;
+ char *r = xmalloc_fgets_internal(file, &sz);
+ if (!r)
+ return r;
+ if (r[sz - 1] == '\n')
+ r[--sz] = '\0';
+ return xrealloc(r, sz + 1);
+}