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authorrsc <devnull@localhost>2005-02-13 18:04:20 +0000
committerrsc <devnull@localhost>2005-02-13 18:04:20 +0000
commit57fcfc2a0b8ecd266ce130dab9a29b7ceb558d64 (patch)
tree2d7dc505e9bda2e49efdc13ed459d7e2fad5f579 /src/cmd/auth/pemdecode.c
parentce94dbe662155bd60d6839b5e8c82ad708667bcd (diff)
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Diffstat (limited to 'src/cmd/auth/pemdecode.c')
-rw-r--r--src/cmd/auth/pemdecode.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/cmd/auth/pemdecode.c b/src/cmd/auth/pemdecode.c
new file mode 100644
index 00000000..f6a6fd59
--- /dev/null
+++ b/src/cmd/auth/pemdecode.c
@@ -0,0 +1,59 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <mp.h>
+#include <libsec.h>
+
+void
+usage(void)
+{
+ fprint(2, "auth/pemdecode section [file]\n");
+ exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+ char *buf;
+ uchar *bin;
+ int fd;
+ long n, tot;
+ int len;
+ char *tag, *file;
+
+ ARGBEGIN{
+ default:
+ usage();
+ }ARGEND
+
+ if(argc != 1 && argc != 2)
+ usage();
+
+ tag = argv[0];
+ if(argc == 2)
+ file = argv[1];
+ else
+ file = "/dev/stdin";
+
+ if((fd = open(file, OREAD)) < 0)
+ sysfatal("open %s: %r", file);
+ buf = nil;
+ tot = 0;
+ for(;;){
+ buf = realloc(buf, tot+8192);
+ if(buf == nil)
+ sysfatal("realloc: %r");
+ if((n = read(fd, buf+tot, 8192)) < 0)
+ sysfatal("read: %r");
+ if(n == 0)
+ break;
+ tot += n;
+ }
+ buf[tot] = 0;
+ bin = decodepem(buf, tag, &len, nil);
+ if(bin == nil)
+ sysfatal("cannot extract section '%s' from pem", tag);
+ if((n=write(1, bin, len)) != len)
+ sysfatal("writing %d bytes got %ld: %r", len, n);
+ exits(0);
+}