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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/fips/fips_premain.c
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Diffstat (limited to 'openssl/fips/fips_premain.c')
-rw-r--r--openssl/fips/fips_premain.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/openssl/fips/fips_premain.c b/openssl/fips/fips_premain.c
new file mode 100644
index 000000000..165d2c5dc
--- /dev/null
+++ b/openssl/fips/fips_premain.c
@@ -0,0 +1,176 @@
+/* ====================================================================
+ * Copyright (c) 2005 The OpenSSL Project. Rights for redistribution
+ * and usage in source and binary forms are granted according to the
+ * OpenSSL license.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined(__unix) || defined(__unix__)
+#include <unistd.h>
+#endif
+
+#ifndef FINGERPRINT_PREMAIN_DSO_LOAD
+
+#if defined(__GNUC__) && __GNUC__>=2
+ void FINGERPRINT_premain(void) __attribute__((constructor));
+ /* Most commonly this results in pointer to premain to be dropped
+ * to .ctors segment, which is traversed by GCC crtbegin.o upon
+ * program startup. Except on a.out OpenBSD where it results in
+ * _GLOBAL_$I$premain() {premain();} being auto-generated by
+ * compiler... But one way or another this is believed to cover
+ * *all* GCC targets. */
+#elif defined(_MSC_VER)
+# ifdef _WINDLL
+ __declspec(dllexport) /* this is essentially cosmetics... */
+# endif
+ void FINGERPRINT_premain(void);
+ static int premain_wrapper(void) { FINGERPRINT_premain(); return 0; }
+# ifdef _WIN64
+# pragma section(".CRT$XCU",read)
+ __declspec(allocate(".CRT$XCU"))
+# else
+# pragma data_seg(".CRT$XCU")
+# endif
+ static int (*p)(void) = premain_wrapper;
+ /* This results in pointer to premain to appear in .CRT segment,
+ * which is traversed by Visual C run-time initialization code.
+ * This applies to both Win32 and [all flavors of] Win64. */
+# pragma data_seg()
+#elif defined(__SUNPRO_C)
+ void FINGERPRINT_premain(void);
+# pragma init(FINGERPRINT_premain)
+ /* This results in a call to premain to appear in .init segment. */
+#elif defined(__DECC) && (defined(__VMS) || defined(VMS))
+ void FINGERPRINT_premain(void);
+# pragma __nostandard
+ globaldef { "LIB$INITIALIZ" } readonly _align (LONGWORD)
+ int spare[8] = {0};
+ globaldef { "LIB$INITIALIZE" } readonly _align (LONGWORD)
+ void (*x_FINGERPRINT_premain)(void) = FINGERPRINT_premain;
+ /* Refer to LIB$INITIALIZE to ensure it exists in the image. */
+ int lib$initialize();
+ globaldef int (*lib_init_ref)() = lib$initialize;
+# pragma __standard
+#elif 0
+ The rest has to be taken care of through command line:
+
+ -Wl,-init,FINGERPRINT_premain on OSF1 and IRIX
+ -Wl,+init,FINGERPRINT_premain on HP-UX
+ -Wl,-binitfini:FINGERPRINT_premain on AIX
+
+ On ELF platforms this results in a call to premain to appear in
+ .init segment...
+#endif
+
+#ifndef HMAC_SHA1_SIG
+#define HMAC_SHA1_SIG "?have to make sure this string is unique"
+#endif
+
+static const unsigned char FINGERPRINT_ascii_value[40] = HMAC_SHA1_SIG;
+
+#define atox(c) ((c)>='a'?((c)-'a'+10):((c)>='A'?(c)-'A'+10:(c)-'0'))
+
+extern const void *FIPS_text_start(), *FIPS_text_end();
+extern const unsigned char FIPS_rodata_start[], FIPS_rodata_end[];
+extern unsigned char FIPS_signature[20];
+extern unsigned int FIPS_incore_fingerprint(unsigned char *,unsigned int);
+
+/*
+ * As name suggests this code is executed prior main(). We use this
+ * opportunity to fingerprint sequestered code in virtual address
+ * space of target application.
+ */
+void FINGERPRINT_premain(void)
+{ unsigned char sig[sizeof(FIPS_signature)];
+ const unsigned char * volatile p=FINGERPRINT_ascii_value;
+ unsigned int len=sizeof(sig),i;
+
+ /* "volatilization" is done to disengage unwanted optimization... */
+ if (*((volatile unsigned char *)p)=='?')
+ { if (FIPS_text_start()==NULL)
+ { fprintf(stderr,"FIPS_text_start() returns NULL\n");
+ _exit(1);
+ }
+#if defined(DEBUG_FINGERPRINT_PREMAIN)
+ fprintf(stderr,".text:%p+%d=%p\n",FIPS_text_start(),
+ (int)((size_t)FIPS_text_end()-(size_t)FIPS_text_start()),
+ FIPS_text_end());
+ fprintf(stderr,".rodata:%p+%d=%p\n",FIPS_rodata_start,
+ (int)((size_t)FIPS_rodata_end-(size_t)FIPS_rodata_start),
+ FIPS_rodata_end);
+#endif
+
+ len=FIPS_incore_fingerprint(sig,sizeof(sig));
+
+ if (len!=sizeof(sig))
+ { fprintf(stderr,"fingerprint length mismatch: %u\n",len);
+ _exit(1);
+ }
+
+ for (i=0;i<len;i++) printf("%02x",sig[i]);
+ printf("\n");
+ fflush(stdout);
+ _exit(0);
+ }
+ else if (FIPS_signature[0]=='\0') do
+ { for (i=0;i<sizeof(FIPS_signature);i++,p+=2)
+ FIPS_signature[i] = (atox(p[0])<<4)|atox(p[1]);
+
+#if defined(DEBUG_FINGERPRINT_PREMAIN)
+ if (getenv("OPENSSL_FIPS")==NULL) break;
+
+ len=FIPS_incore_fingerprint(sig,sizeof(sig));
+
+ if (memcmp(FIPS_signature,sig,sizeof(FIPS_signature)))
+ { fprintf(stderr,"FINGERPRINT_premain: FIPS_signature mismatch\n");
+ _exit(1);
+ }
+#endif
+ } while(0);
+}
+
+#else
+
+#include <openssl/bio.h>
+#include <openssl/dso.h>
+#include <openssl/err.h>
+
+int main(int argc,char *argv[])
+{ DSO *dso;
+ DSO_FUNC_TYPE func;
+ BIO *bio_err;
+
+ if (argc < 2)
+ { fprintf (stderr,"usage: %s libcrypto.dso\n",argv[0]);
+ return 1;
+ }
+
+ if ((bio_err=BIO_new(BIO_s_file())) == NULL)
+ { fprintf (stderr,"unable to allocate BIO\n");
+ return 1;
+ }
+ BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
+ ERR_load_crypto_strings();
+
+ dso = DSO_load(NULL,argv[1],NULL,DSO_FLAG_NO_NAME_TRANSLATION);
+ if (dso == NULL)
+ { ERR_print_errors(bio_err);
+ return 1;
+ }
+
+ /* This is not normally reached, because FINGERPRINT_premain should
+ * have executed and terminated application already upon DSO_load... */
+ func = DSO_bind_func(dso,"FINGERPRINT_premain");
+ if (func == NULL)
+ { ERR_print_errors(bio_err);
+ return 1;
+ }
+
+ (*func)();
+
+ return 0;
+}
+
+#endif