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Fix some stupid parser bugs, most notably forgetting to allocate space for \0.

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This commit is contained in:
Nicholas Marriott
2008-06-16 20:25:54 +00:00
parent 55d5b83408
commit 21a9b3f6e8
1 changed files with 18 additions and 16 deletions
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34
cfg.c
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@@ -1,4 +1,4 @@
/* $Id: cfg.c,v 1.8 2008-06-16 17:35:40 nicm Exp $ */
/* $Id: cfg.c,v 1.9 2008-06-16 20:25:54 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -79,13 +79,13 @@ load_cfg(const char *path, char **causep)
case '\'':
if ((s = cfg_string(f, '\'', 0)) == NULL)
goto error;
argv = xrealloc(argv, argc + 1, sizeof (char *));
argv = xrealloc(argv, argc + 1, sizeof *argv);
argv[argc++] = s;
break;
case '"':
if ((s = cfg_string(f, '"', 1)) == NULL)
goto error;
argv = xrealloc(argv, argc + 1, sizeof (char *));
argv = xrealloc(argv, argc + 1, sizeof *argv);
argv[argc++] = s;
break;
case '#':
@@ -97,11 +97,11 @@ load_cfg(const char *path, char **causep)
case EOF:
case ' ':
case '\t':
if (len != 0) {
if (len != 0) {
buf = xrealloc(buf, 1, len + 1);
buf[len] = '\0';
argv = xrealloc(
argv, argc + 1, sizeof (char *));
argv = xrealloc(argv, argc + 1, sizeof *argv);
argv[argc++] = buf;
buf = NULL;
@@ -115,7 +115,7 @@ load_cfg(const char *path, char **causep)
break;
if ((cmd = cmd_parse(argc, argv, &cause)) == NULL)
goto error;
goto error;
ctx.msgdata = NULL;
ctx.cursession = NULL;
@@ -176,21 +176,19 @@ cfg_string(FILE *f, char endch, int esc)
char *buf;
size_t len;
buf = xmalloc(1);
buf = NULL;
len = 0;
while ((ch = getc(f)) != endch) {
switch (ch) {
case EOF:
xfree(buf);
return (NULL);
goto error;
case '\\':
if (!esc)
break;
switch (ch = getc(f)) {
case EOF:
xfree(buf);
return (NULL);
goto error;
case 'r':
ch = '\r';
break;
@@ -204,14 +202,18 @@ cfg_string(FILE *f, char endch, int esc)
break;
}
if (len >= SIZE_MAX - 2) {
xfree(buf);
return (NULL);
}
if (len >= SIZE_MAX - 2)
goto error;
buf = xrealloc(buf, 1, len + 1);
buf[len++] = ch;
}
buf = xrealloc(buf, 1, len + 1);
buf[len] = '\0';
return (buf);
error:
if (buf != NULL)
xfree(buf);
return (NULL);
}