+static int smime_cb(int ok, X509_STORE_CTX *ctx);
+
+#define SMIME_OP 0x10
+#define SMIME_IP 0x20
+#define SMIME_SIGNERS 0x40
+#define SMIME_ENCRYPT (1 | SMIME_OP)
+#define SMIME_DECRYPT (2 | SMIME_IP)
+#define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS)
+#define SMIME_VERIFY (4 | SMIME_IP)
+#define SMIME_PK7OUT (5 | SMIME_IP | SMIME_OP)
+#define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
+
+typedef enum OPTION_choice {
+ OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
+ OPT_ENCRYPT, OPT_DECRYPT, OPT_SIGN, OPT_RESIGN, OPT_VERIFY,
+ OPT_PK7OUT, OPT_TEXT, OPT_NOINTERN, OPT_NOVERIFY, OPT_NOCHAIN,
+ OPT_NOCERTS, OPT_NOATTR, OPT_NODETACH, OPT_NOSMIMECAP,
+ OPT_BINARY, OPT_NOSIGS, OPT_STREAM, OPT_INDEF, OPT_NOINDEF,
+ OPT_CRLFEOL, OPT_ENGINE, OPT_PASSIN,
+ OPT_TO, OPT_FROM, OPT_SUBJECT, OPT_SIGNER, OPT_RECIP, OPT_MD,
+ OPT_CIPHER, OPT_INKEY, OPT_KEYFORM, OPT_CERTFILE, OPT_CAFILE,
+ OPT_R_ENUM,
+ OPT_V_ENUM,
+ OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH, OPT_IN, OPT_INFORM, OPT_OUT,
+ OPT_OUTFORM, OPT_CONTENT
+} OPTION_CHOICE;
+
+const OPTIONS smime_options[] = {
+ {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
+ {OPT_HELP_STR, 1, '-',
+ " cert.pem... recipient certs for encryption\n"},
+ {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
+ {"help", OPT_HELP, '-', "Display this summary"},
+ {"encrypt", OPT_ENCRYPT, '-', "Encrypt message"},
+ {"decrypt", OPT_DECRYPT, '-', "Decrypt encrypted message"},
+ {"sign", OPT_SIGN, '-', "Sign message"},
+ {"verify", OPT_VERIFY, '-', "Verify signed message"},
+ {"pk7out", OPT_PK7OUT, '-', "Output PKCS#7 structure"},
+ {"nointern", OPT_NOINTERN, '-',
+ "Don't search certificates in message for signer"},
+ {"nosigs", OPT_NOSIGS, '-', "Don't verify message signature"},
+ {"noverify", OPT_NOVERIFY, '-', "Don't verify signers certificate"},
+ {"nocerts", OPT_NOCERTS, '-',
+ "Don't include signers certificate when signing"},
+ {"nodetach", OPT_NODETACH, '-', "Use opaque signing"},
+ {"noattr", OPT_NOATTR, '-', "Don't include any signed attributes"},
+ {"binary", OPT_BINARY, '-', "Don't translate message to text"},
+ {"certfile", OPT_CERTFILE, '<', "Other certificates file"},
+ {"signer", OPT_SIGNER, 's', "Signer certificate file"},
+ {"recip", OPT_RECIP, '<', "Recipient certificate file for decryption"},
+ {"in", OPT_IN, '<', "Input file"},
+ {"inform", OPT_INFORM, 'c', "Input format SMIME (default), PEM or DER"},
+ {"inkey", OPT_INKEY, 's',
+ "Input private key (if not signer or recipient)"},
+ {"keyform", OPT_KEYFORM, 'f', "Input private key format (PEM or ENGINE)"},
+ {"out", OPT_OUT, '>', "Output file"},
+ {"outform", OPT_OUTFORM, 'c',
+ "Output format SMIME (default), PEM or DER"},
+ {"content", OPT_CONTENT, '<',
+ "Supply or override content for detached signature"},
+ {"to", OPT_TO, 's', "To address"},
+ {"from", OPT_FROM, 's', "From address"},
+ {"subject", OPT_SUBJECT, 's', "Subject"},
+ {"text", OPT_TEXT, '-', "Include or delete text MIME headers"},
+ {"CApath", OPT_CAPATH, '/', "Trusted certificates directory"},
+ {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
+ {"no-CAfile", OPT_NOCAFILE, '-',
+ "Do not load the default certificates file"},
+ {"no-CApath", OPT_NOCAPATH, '-',
+ "Do not load certificates from the default certificates directory"},
+ {"resign", OPT_RESIGN, '-', "Resign a signed message"},
+ {"nochain", OPT_NOCHAIN, '-',
+ "set PKCS7_NOCHAIN so certificates contained in the message are not used as untrusted CAs" },
+ {"nosmimecap", OPT_NOSMIMECAP, '-', "Omit the SMIMECapabilities attribute"},
+ {"stream", OPT_STREAM, '-', "Enable CMS streaming" },
+ {"indef", OPT_INDEF, '-', "Same as -stream" },
+ {"noindef", OPT_NOINDEF, '-', "Disable CMS streaming"},
+ {"crlfeol", OPT_CRLFEOL, '-', "Use CRLF as EOL termination instead of CR only"},
+ OPT_R_OPTIONS,
+ {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
+ {"md", OPT_MD, 's', "Digest algorithm to use when signing or resigning"},
+ {"", OPT_CIPHER, '-', "Any supported cipher"},
+ OPT_V_OPTIONS,
+#ifndef OPENSSL_NO_ENGINE
+ {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
+#endif
+ {NULL}
+};