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/*
* 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);
}
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