提交 920487b3 编写于 作者: G Guido Günther

Add virBufferEscapeShell

Escape strings so they're safe to pass to the shell. It's based on
virsh's cmdEcho.
上级 a2b5c57d
......@@ -27,6 +27,7 @@ virBufferContentAndReset;
virBufferError;
virBufferEscape;
virBufferEscapeSexpr;
virBufferEscapeShell;
virBufferEscapeString;
virBufferFreeAndReset;
virBufferStrcat;
......
......@@ -485,6 +485,60 @@ virBufferURIEncodeString (virBufferPtr buf, const char *str)
buf->content[buf->use] = '\0';
}
/**
* virBufferEscapeShell:
* @buf: the buffer to append to
* @str: an unquoted string
*
* Quotes a string so that the shell (/bin/sh) will interpret the
* quoted string to mean str.
*/
void
virBufferEscapeShell(virBufferPtr buf, const char *str)
{
int len;
char *escaped, *out;
const char *cur;
if ((buf == NULL) || (str == NULL))
return;
if (buf->error)
return;
/* Only quote if str includes shell metacharacters. */
if (!strpbrk(str, "\r\t\n !\"#$&'()*;<>?[\\]^`{|}~")) {
virBufferAdd(buf, str, -1);
return;
}
len = strlen(str);
if (xalloc_oversized(4, len) ||
VIR_ALLOC_N(escaped, 4 * len + 3) < 0) {
virBufferSetError(buf);
return;
}
cur = str;
out = escaped;
*out++ = '\'';
while (*cur != 0) {
*out++ = *cur++;
if (*cur == '\'') {
/* Replace literal ' with a close ', a \', and a open ' */
*out++ = '\\';
*out++ = '\'';
*out++ = '\'';
}
}
*out++ = '\'';
*out = 0;
virBufferAdd(buf, escaped, -1);
VIR_FREE(escaped);
}
/**
* virBufferStrcat:
* @buf: the buffer to dump
......
......@@ -52,6 +52,7 @@ void virBufferEscapeString(const virBufferPtr buf, const char *format, const cha
void virBufferEscapeSexpr(const virBufferPtr buf, const char *format, const char *str);
void virBufferEscape(const virBufferPtr buf, const char *toescape, const char *format, const char *str);
void virBufferURIEncodeString (const virBufferPtr buf, const char *str);
void virBufferEscapeShell(virBufferPtr buf, const char *str);
# define virBufferAddLit(buf_, literal_string_) \
virBufferAdd (buf_, "" literal_string_ "", sizeof literal_string_ - 1)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册