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author | Chris Xiong <chirs241097@gmail.com> | 2019-02-10 11:16:07 +0800 |
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committer | Chris Xiong <chirs241097@gmail.com> | 2019-02-10 11:16:07 +0800 |
commit | 9d3c8c0e6e1a7ba43bf3dc19350d1dca68b657a3 (patch) | |
tree | 339de0698c13e1763d3361d70fb1266621025c91 /cgi/4or6.c | |
download | web-9d3c8c0e6e1a7ba43bf3dc19350d1dca68b657a3.tar.xz |
Initial commit.
Diffstat (limited to 'cgi/4or6.c')
-rw-r--r-- | cgi/4or6.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/cgi/4or6.c b/cgi/4or6.c new file mode 100644 index 0000000..1cf6780 --- /dev/null +++ b/cgi/4or6.c @@ -0,0 +1,14 @@ +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +int main() +{ + printf("Content-type: text/plain\n\n"); + if(!getenv("REMOTE_ADDR"))return 0; + char* s=getenv("REMOTE_ADDR"); + if(getenv("HTTP_X_FORWARDED_FOR")) + s=getenv("HTTP_X_FORWARDED_FOR"); + if(strchr(s,':')!=NULL)puts("6"); + else puts("4"); + return 0; +} |