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authorJunio C Hamano <junkio@cox.net>2005-07-07 23:58:32 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-08 11:01:10 -0700
commit6fb737be5e4803feabe0d1b6169de36131936368 (patch)
treef9aa1d13875b921bff9dcf27692c90ef7223a90b /quote.h
parentb33e9666082ce692e64ccfd688dc2a5075566f75 (diff)
downloadgit-6fb737be5e4803feabe0d1b6169de36131936368.tar.gz
[PATCH] Make sq_expand() available as sq_quote().
A useful shell safety helper sq_expand() was hidden as a static function in diff.c. Extract it out and make it available as sq_quote(). Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'quote.h')
-rw-r--r--quote.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/quote.h b/quote.h
new file mode 100644
index 0000000000..c8cfb3a124
--- /dev/null
+++ b/quote.h
@@ -0,0 +1,26 @@
+#ifndef QUOTE_H
+#define QUOTE_H
+
+
+/* Help to copy the thing properly quoted for the shell safety.
+ * any single quote is replaced with '\'', and the whole thing
+ * is enclosed in a single quote pair.
+ *
+ * For example, if you are passing the result to system() as an
+ * argument:
+ *
+ * sprintf(cmd, "foobar %s %s", sq_quote(arg0), sq_quote(arg1))
+ *
+ * would be appropriate. If the system() is going to call ssh to
+ * run the command on the other side:
+ *
+ * sprintf(cmd, "git-diff-tree %s %s", sq_quote(arg0), sq_quote(arg1));
+ * sprintf(rcmd, "ssh %s %s", sq_quote(host), sq_quote(cmd));
+ *
+ * Note that the above examples leak memory! Remember to free result from
+ * sq_quote() in a real application.
+ */
+
+char *sq_quote(const char *src);
+
+#endif