[pkg-opensc-commit] [libp11] 28/239: add examples/ subdirectory.

[Eric Dorland]

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eric pushed a commit to branch master
in repository libp11.

commit cd30f1b6536ac2af62275225e4c01590aa25faf7
Author: Andreas Jellinghaus <andreas at ionisiert.de>
Date:   Tue Aug 30 15:52:00 2005 +0000

    add examples/ subdirectory.
---
 Makefile.am       |  2 +-
 examples/Makefile |  7 +++++++
 examples/README   | 25 +++++++++++++++++++++++++
 examples/auth.c   | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 82 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 829b127..56e0218 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,7 +2,7 @@
 
 SUBDIRS = aclocal doc src rsaref .
 
-EXTRA_DIST = bootstrap depcomp 
+EXTRA_DIST = bootstrap depcomp $(shell ls examples/{README,Makefile,*.c})
 
 MAINTAINERCLEANFILES = \
 	Makefile.in config.h.in configure \
diff --git a/examples/Makefile b/examples/Makefile
new file mode 100644
index 0000000..fbe6529
--- /dev/null
+++ b/examples/Makefile
@@ -0,0 +1,7 @@
+CFLAGS=$(shell pkg-config --cflags libp11)
+LDFLAGS=$(shell pkg-config --libs libp11)
+
+all: auth
+
+clean:
+	rm auth
diff --git a/examples/README b/examples/README
new file mode 100644
index 0000000..6db711e
--- /dev/null
+++ b/examples/README
@@ -0,0 +1,25 @@
+Libp11 example code
+===================
+
+This directory contains some example code how to use libp11.
+Feel free to use this code in any way, it is public domain,
+not copyrighted.
+
+auth.c		Example for authentication, i.e. get the first
+		token, get the first certificate, ask for pin,
+		login, sign some random data, and verify the
+		signature using the certificate/public key.
+
+For easy building see the Makefile in this directory. If you
+are using autoconf/automake/libtool, you might want to add
+to your configure.ac file:
+
+PKG_CHECK_MODULES([LIBP11], [libp11])
+
+and to your Makefile.am:
+
+bin_PROGRAMS = myapp
+
+myapp_CFLAGS = @LIBP11_CFLAGS@
+myapp_LIBADD = @LIBP11_LIBS@
+myapp_SOURCES = myapp.c
diff --git a/examples/auth.c b/examples/auth.c
new file mode 100644
index 0000000..2e6c5b1
--- /dev/null
+++ b/examples/auth.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <libp11.h>
+
+int main(int argc, char **argv)
+{
+	PKCS11_CTX *ctx;
+        PKCS11_SLOT *slot;
+	unsigned char random[10];
+	int rc,len;
+
+	ctx = PKCS11_CTX_new();
+
+        /* load pkcs #11 module */
+        rc = PKCS11_CTX_load(ctx, "/home/aj/opensc/lib/opensc-pkcs11.so");
+        if (rc) {
+                fprintf(stderr, "loading pkcs11 engine failed\n");
+		rc=1;
+		goto nolib;
+        }
+
+        /* get first slot with a token */
+        slot = PKCS11_find_token(ctx);
+        if (!slot || !slot->token) {
+                fprintf(stderr, "no token available\n");
+                rc=2;
+                goto noslot;
+        }
+
+	/* get 10 random bytes */
+	len=sizeof(random);
+	rc = PKCS11_generate_random(slot, random, len);
+	if (rc < 0) {
+		fprintf(stderr,"generate_random failed: %d\n",rc);
+		rc=3;
+		goto norandom;
+	}
+
+	printf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
+		random[0], random[1], random[2], random[3], random[4], 
+		random[5], random[6], random[7], random[8], random[9]); 
+
+	rc=0;
+norandom:
+noslot:
+        PKCS11_CTX_unload(ctx);
+nolib:
+	PKCS11_CTX_free(ctx);
+	return rc;
+}

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