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Diffstat (limited to 'programs/scepclient/scepclient.c')
| -rw-r--r-- | programs/scepclient/scepclient.c | 1036 |
1 files changed, 0 insertions, 1036 deletions
diff --git a/programs/scepclient/scepclient.c b/programs/scepclient/scepclient.c deleted file mode 100644 index bde460844..000000000 --- a/programs/scepclient/scepclient.c +++ /dev/null @@ -1,1036 +0,0 @@ -/* - * Copyright (C) 2005 Jan Hutter, Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -/** - * @file main.c - * @brief scepclient main program - */ - -/** - * @mainpage SCEP for Linux strongSwan - * - * Documentation of SCEP for Linux StrongSwan - */ - -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <getopt.h> -#include <ctype.h> -#include <unistd.h> -#include <time.h> -#include <gmp.h> - -#include <freeswan.h> - -#include "../pluto/constants.h" -#include "../pluto/defs.h" -#include "../pluto/log.h" -#include "../pluto/oid.h" -#include "../pluto/asn1.h" -#include "../pluto/pkcs1.h" -#include "../pluto/pkcs7.h" -#include "../pluto/certs.h" -#include "../pluto/fetch.h" -#include "../pluto/rnd.h" - -#include "rsakey.h" -#include "pkcs10.h" -#include "scep.h" - -/* - * definition of some defaults - */ - -/* default name of DER-encoded PKCS#1 private key file */ -#define DEFAULT_FILENAME_PKCS1 "myKey.der" - -/* default name of DER-encoded PKCS#10 certificate request file */ -#define DEFAULT_FILENAME_PKCS10 "myReq.der" - -/* default name of DER-encoded PKCS#7 file */ -#define DEFAULT_FILENAME_PKCS7 "pkcs7.der" - -/* default name of DER-encoded self-signed X.509 certificate file */ -#define DEFAULT_FILENAME_CERT_SELF "selfCert.der" - -/* default name of DER-encoded X.509 certificate file */ -#define DEFAULT_FILENAME_CERT "myCert.der" - -/* default name of DER-encoded CA cert file used for key encipherment */ -#define DEFAULT_FILENAME_CACERT_ENC "caCert.der" - -/* default name of the der encoded CA cert file used for signature verification */ -#define DEFAULT_FILENAME_CACERT_SIG "caCert.der" - -/* default prefix of the der encoded CA certificates received from the SCEP server */ -#define DEFAULT_FILENAME_PREFIX_CACERT "caCert.der" - -/* default certificate validity */ -#define DEFAULT_CERT_VALIDITY 5 * 3600 * 24 * 365 /* seconds */ - -/* default polling time interval in SCEP manual mode */ -#define DEFAULT_POLL_INTERVAL 20 /* seconds */ - -/* default key length for self-generated RSA keys */ -#define DEFAULT_RSA_KEY_LENGTH 2048 /* bits */ - -/* default distinguished name */ -#define DEFAULT_DN "C=CH, O=Linux strongSwan, CN=" - -/* challenge password buffer size */ -#define MAX_PASSWORD_LENGTH 256 - -/* Max length of filename for tempfile */ -#define MAX_TEMP_FILENAME_LENGTH 256 - - -/* current scepclient version */ -static const char *scepclient_version = "1.0"; - -/* by default the CRL policy is lenient */ -bool strict_crl_policy = FALSE; - -/* by default pluto does not check crls dynamically */ -long crl_check_interval = 0; - -/* by default pluto logs out after every smartcard use */ -bool pkcs11_keep_state = FALSE; - - -/* - * Global variables - */ - -RSA_private_key_t *private_key = NULL; - -chunk_t pkcs1; -chunk_t pkcs7; -chunk_t subject; -chunk_t challengePassword; -chunk_t serialNumber; -chunk_t transID; -chunk_t fingerprint; -chunk_t issuerAndSubject; -chunk_t getCertInitial; -chunk_t scep_response; -cert_t cert; - -x509cert_t *x509_signer = NULL; -x509cert_t *x509_ca_enc = NULL; -x509cert_t *x509_ca_sig = NULL; -generalName_t *subjectAltNames = NULL; -pkcs10_t *pkcs10 = NULL; - -/** - * @brief exit scepclient - * - * The log is closed and leaks are reported - * if LEAK_DETECTIVE is activated - * - * @param status 0 = OK, 1 = general discomfort - */ -static void -exit_scepclient(err_t message, ...) -{ - if (private_key != NULL) - { - free_RSA_private_content(private_key); - pfree(private_key); - } - freeanychunk(pkcs1); - freeanychunk(pkcs7); - freeanychunk(subject); - freeanychunk(serialNumber); - freeanychunk(transID); - freeanychunk(fingerprint); - freeanychunk(issuerAndSubject); - freeanychunk(getCertInitial); - if (scep_response.ptr != NULL) - free(scep_response.ptr); - - free_generalNames(subjectAltNames, TRUE); - if (x509_signer != NULL) - x509_signer->subjectAltName = NULL; - - free_x509cert(x509_signer); - free_x509cert(x509_ca_enc); - free_x509cert(x509_ca_sig); - pkcs10_free(pkcs10); - -#ifdef LEAK_DETECTIVE - report_leaks(); -#endif /* LEAK_DETECTIVE */ - close_log(); - - /* print any error message to stderr */ - if (message != NULL && *message != '\0') - { - va_list args; - char m[LOG_WIDTH]; /* longer messages will be truncated */ - - va_start(args, message); - vsnprintf(m, sizeof(m), message, args); - va_end(args); - - fprintf(stderr, "error: %s\n", m); - exit(-1); - } - exit(0); -} - -/** - * @brief prints the program version and exits - * - */ -static void -version(void) -{ - printf("scepclient %s\n", scepclient_version); - exit_scepclient(NULL); -} - -/** - * @brief prints the usage of the program to the stderr output - * - * If message is set, program is exitet with 1 (error) - * @param message message in case of an error - */ -static void -usage(const char *message) -{ - fprintf(stderr, - "Usage: scepclient\n" - " --help (-h) show usage and exit\n" - " --version (-v) show version and exit\n" - " --quiet (-q) do not write log output to stderr\n" - " --in (-i) <type>[=<filename>] use <filename> of <type> for input \n" - " <type> = pkcs1 | cacert-enc | cacert-sig\n" - " - if no pkcs1 input is defined, a \n" - " RSA key will be generated\n" - " - if no filename is given, default is used\n" - " --out (-o) <type>[=<filename>] write output of <type> to <filename>\n" - " multiple outputs are allowed\n" - " <type> = pkcs1 | pkcs10 | pkcs7 | cert-self | cert | cacert\n" - " - type cacert defines filename prefix of\n" - " received CA certificate(s)\n" - " - if no filename is given, default is used\n" - " --optionsfrom (-+) <filename> reads additional options from given file\n" - " --force (-f) force existing file(s)\n" - "\n" - "Options for key generation (pkcs1):\n" - " --keylength (-k) <bits> key length for RSA key generation\n" - "(default: 2048 bits)\n" - "\n" - "Options for validity:\n" - " --days (-D) <days> validity in days\n" - " --startdate (-S) <YYMMDDHHMMSS>Z not valid before date\n" - " --enddate (-E) <YYMMDDHHMMSS>Z not valid after date\n" - "\n" - "Options for request generation (pkcs10):\n" - " --dn (-d) <dn> comma separated list of distinguished names\n" - " --subjectAltName (-s) <t>=<v> include subjectAltName in certificate request\n" - " <t> = email | dns | ip \n" - " --password (-p) <pw> challenge password\n" - " - if pw is '%%prompt', password gets prompted for\n" - " --algorithm (-a) <algo> use specified algorithm for PKCS#7 encryption\n" - " <algo> = des-cbc | 3des-cbc (default: 3des-cbc)\n" - "\n" - "Options for enrollment (cert):\n" - " --url (-u) <url> url of the SCEP server\n" - " --method (-m) post | get http request type\n" - " --interval (-t) <seconds> manual mode poll interval in seconds (default 20s)\n" - " --maxpolltime (-x) <seconds> max poll time in seconds when in manual mode\n" - " (default: unlimited)\n" -#ifdef DEBUG - "\n" - "Debugging output:\n" - " --debug-all (-A) show everything except private\n" - " --debug-parsing (-P) show parsing relevant stuff\n" - " --debug-raw (-R) show raw hex dumps\n" - " --debug-control (-C) show control flow output\n" - " --debug-controlmore (-M) show more control flow\n" - " --debug-private (-X) show sensitive data (private keys, etc.)\n" -#endif - ); - exit_scepclient(message); -} - -/** - * @brief main of scepclient - * - * @param argc number of arguments - * @param argv pointer to the argument values - */ -int main(int argc, char **argv) -{ - /* external values */ - extern char * optarg; - extern int optind; - - /* type of input and output files */ - typedef enum { - PKCS1 = 0x01, - PKCS10 = 0x02, - PKCS7 = 0x04, - CERT_SELF = 0x08, - CERT = 0x10, - CACERT_ENC = 0x20, - CACERT_SIG = 0x40 - } scep_filetype_t; - - /* filetype to read from, defaults to "generate a key" */ - scep_filetype_t filetype_in = 0; - - /* filetype to write to, no default here */ - scep_filetype_t filetype_out = 0; - - /* input files */ - char *file_in_pkcs1 = DEFAULT_FILENAME_PKCS1; - char *file_in_cacert_enc = DEFAULT_FILENAME_CACERT_ENC; - char *file_in_cacert_sig = DEFAULT_FILENAME_CACERT_SIG; - - /* output files */ - char *file_out_pkcs1 = DEFAULT_FILENAME_PKCS1; - char *file_out_pkcs10 = DEFAULT_FILENAME_PKCS10; - char *file_out_pkcs7 = DEFAULT_FILENAME_PKCS7; - char *file_out_cert_self = DEFAULT_FILENAME_CERT_SELF; - char *file_out_cert = DEFAULT_FILENAME_CERT; - char *file_out_prefix_cacert = DEFAULT_FILENAME_PREFIX_CACERT; - - /* by default user certificate is requested */ - bool request_ca_certificate = FALSE; - - /* by default existing files are not overwritten */ - bool force = FALSE; - - /* length of RSA key in bits */ - u_int rsa_keylength = DEFAULT_RSA_KEY_LENGTH; - - /* validity of self-signed certificate */ - time_t validity = DEFAULT_CERT_VALIDITY; - time_t notBefore = 0; - time_t notAfter = 0; - - /* distinguished name for requested certificate, ASCII format */ - char *distinguishedName = NULL; - - /* challenge password */ - char challenge_password_buffer[MAX_PASSWORD_LENGTH]; - - /* symmetric encryption algorithm used by pkcs7, default is 3DES */ - int pkcs7_symmetric_cipher = OID_3DES_EDE_CBC; - - /* digest algorithm used by pkcs7, default is MD5 */ - int pkcs7_digest_alg = OID_MD5; - - /* signature algorithm used by pkcs10, default is MD5 with RSA encryption */ - int pkcs10_signature_alg = OID_MD5; - - /* URL of the SCEP-Server */ - char *scep_url = NULL; - - /* http request method, default is GET */ - fetch_request_t request_type = FETCH_GET; - - /* poll interval time in manual mode in seconds */ - u_int poll_interval = DEFAULT_POLL_INTERVAL; - - /* maximum poll time */ - u_int max_poll_time = 0; - - err_t ugh = NULL; - - /* initialize global variables */ - pkcs1 = empty_chunk; - pkcs7 = empty_chunk; - serialNumber = empty_chunk; - transID = empty_chunk; - fingerprint = empty_chunk; - issuerAndSubject = empty_chunk; - challengePassword = empty_chunk; - getCertInitial = empty_chunk; - scep_response = empty_chunk; - log_to_stderr = TRUE; - - for (;;) - { - static const struct option long_opts[] = { - /* name, has_arg, flag, val */ - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, 'v' }, - { "optionsfrom", required_argument, NULL, '+' }, - { "quiet", no_argument, NULL, 'q' }, - { "in", required_argument, NULL, 'i' }, - { "out", required_argument, NULL, 'o' }, - { "force", no_argument, NULL, 'f' }, - { "keylength", required_argument, NULL, 'k' }, - { "dn", required_argument, NULL, 'd' }, - { "days", required_argument, NULL, 'D' }, - { "startdate", required_argument, NULL, 'S' }, - { "enddate", required_argument, NULL, 'E' }, - { "subjectAltName", required_argument, NULL, 's' }, - { "password", required_argument, NULL, 'p' }, - { "algorithm", required_argument, NULL, 'a' }, - { "url", required_argument, NULL, 'u' }, - { "method", required_argument, NULL, 'm' }, - { "interval", required_argument, NULL, 't' }, - { "maxpolltime", required_argument, NULL, 'x' }, -#ifdef DEBUG - { "debug-all", no_argument, NULL, 'A' }, - { "debug-parsing", no_argument, NULL, 'P'}, - { "debug-raw", no_argument, NULL, 'R'}, - { "debug-control", no_argument, NULL, 'C'}, - { "debug-controlmore", no_argument, NULL, 'M'}, - { "debug-private", no_argument, NULL, 'X'}, -#endif - { 0,0,0,0 } - }; - - /* parse next option */ - int c = getopt_long(argc, argv, "hv+:qi:o:fk:d:s:p:a:u:m:t:x:APRCMS", long_opts, NULL); - - switch (c) - { - case EOF: /* end of flags */ - break; - - case 'h': /* --help */ - usage(NULL); - - case 'v': /* --version */ - version(); - - case 'q': /* --quiet */ - log_to_stderr = FALSE; - continue; - - case 'i': /* --in <type> [= <filename>] */ - { - char *filename = strstr(optarg, "="); - - if (filename) - { - /* replace '=' by '\0' */ - *filename = '\0'; - /* set pointer to start of filename */ - filename++; - } - if (strcasecmp("pkcs1", optarg) == 0) - { - filetype_in |= PKCS1; - if (filename) - file_in_pkcs1 = filename; - } - else if (strcasecmp("cacert-enc", optarg) == 0) - { - filetype_in |= CACERT_ENC; - if (filename) - file_in_cacert_enc = filename; - } - else if (strcasecmp("cacert-sig", optarg) == 0) - { - filetype_in |= CACERT_SIG; - if (filename) - file_in_cacert_sig = filename; - } - else - { - usage("invalid --in file type"); - } - continue; - } - - case 'o': /* --out <type> [= <filename>] */ - { - char *filename = strstr(optarg, "="); - - if (filename) - { - /* replace '=' by '\0' */ - *filename = '\0'; - /* set pointer to start of filename */ - filename++; - } - if (strcasecmp("pkcs1", optarg) == 0) - { - filetype_out |= PKCS1; - if (filename) - file_out_pkcs1 = filename; - } - else if (strcasecmp("pkcs10", optarg) == 0) - { - filetype_out |= PKCS10; - if (filename) - file_out_pkcs10 = filename; - } - else if (strcasecmp("pkcs7", optarg) == 0) - { - filetype_out |= PKCS7; - if (filename) - file_out_pkcs7 = filename; - } - else if (strcasecmp("cert-self", optarg) == 0) - { - filetype_out |= CERT_SELF; - if (filename) - file_out_cert_self = filename; - } - else if (strcasecmp("cert", optarg) == 0) - { - filetype_out |= CERT; - if (filename) - file_out_cert = filename; - } - else if (strcasecmp("cacert", optarg) == 0) - { - request_ca_certificate = TRUE; - if (filename) - file_out_prefix_cacert = filename; - } - else - { - usage("invalid --out file type"); - } - continue; - } - - case 'f': /* --force */ - force = TRUE; - continue; - - case '+': /* --optionsfrom <filename> */ - optionsfrom(optarg, &argc, &argv, optind, stderr); - /* does not return on error */ - continue; - - case 'k': /* --keylength <length> */ - { - div_t q; - - rsa_keylength = atoi(optarg); - if (rsa_keylength == 0) - usage("invalid keylength"); - - /* check if key length is a multiple of 8 bits */ - q = div(rsa_keylength, 2*BITS_PER_BYTE); - if (q.rem != 0) - { - exit_scepclient("keylength is not a multiple of %d bits!" - , 2*BITS_PER_BYTE); - } - continue; - } - - case 'D': /* --days */ - if (optarg == NULL || !isdigit(optarg[0])) - usage("missing number of days"); - { - char *endptr; - long days = strtol(optarg, &endptr, 0); - - if (*endptr != '\0' || endptr == optarg - || days <= 0) - usage("<days> must be a positive number"); - validity = 24*3600*days; - } - continue; - - case 'S': /* --startdate */ - if (optarg == NULL || strlen(optarg) != 13 || optarg[12] != 'Z') - usage("date format must be YYMMDDHHMMSSZ"); - { - chunk_t date = { optarg, 13 }; - notBefore = asn1totime(&date, ASN1_UTCTIME); - } - continue; - - case 'E': /* --enddate */ - if (optarg == NULL || strlen(optarg) != 13 || optarg[12] != 'Z') - usage("date format must be YYMMDDHHMMSSZ"); - { - chunk_t date = { optarg, 13 }; - notAfter = asn1totime(&date, ASN1_UTCTIME); - } - continue; - - case 'd': /* --dn */ - if (distinguishedName) - usage("only one distinguished name allowed"); - distinguishedName = optarg; - continue; - - case 's': /* --subjectAltName */ - { - generalNames_t kind; - char *value = strstr(optarg, "="); - - if (value) - { - /* replace '=' by '\0' */ - *value = '\0'; - /* set pointer to start of value */ - value++; - } - - if (!strcasecmp("email", optarg)) - kind = GN_RFC822_NAME; - else if (!strcasecmp("dns", optarg)) - kind = GN_DNS_NAME; - else if (!strcasecmp("ip", optarg)) - kind = GN_IP_ADDRESS; - else - { - usage("invalid --subjectAltName type"); - continue; - } - pkcs10_add_subjectAltName(&subjectAltNames, kind, value); - continue; - } - - case 'p': /* --password */ - if (challengePassword.len > 0) - usage("only one challenge password allowed"); - - if (strcasecmp("%prompt", optarg) == 0) - { - printf("Challenge password: "); - if (fgets(challenge_password_buffer, sizeof(challenge_password_buffer)-1, stdin)) - { - challengePassword.ptr = challenge_password_buffer; - /* discard the terminating '\n' from the input */ - challengePassword.len = strlen(challenge_password_buffer) - 1; - } - else - { - usage("challenge password could not be read"); - } - } - else - { - challengePassword.ptr = optarg; - challengePassword.len = strlen(optarg); - } - continue; - - case 'u': /* -- url */ - if (scep_url) - usage("only one URL argument allowed"); - scep_url = optarg; - continue; - - case 'm': /* --method */ - if (strcasecmp("post", optarg) == 0) - request_type = FETCH_POST; - else if (strcasecmp("get", optarg) == 0) - request_type = FETCH_GET; - else - usage("invalid http request method specified"); - continue; - - case 't': /* --interval */ - poll_interval = atoi(optarg); - if (poll_interval <= 0) - usage("invalid interval specified"); - continue; - - case 'x': /* --maxpolltime */ - max_poll_time = atoi(optarg); - if (max_poll_time < 0) - usage("invalid maxpolltime specified"); - continue; - - case 'a': /*--algorithm */ - if (strcasecmp("des-cbc", optarg) == 0) - pkcs7_symmetric_cipher = OID_DES_CBC; - else if (strcasecmp("3des-cbc", optarg) == 0) - pkcs7_symmetric_cipher = OID_3DES_EDE_CBC; - else - usage("invalid encryption algorithm specified"); - continue; -#ifdef DEBUG - case 'A': /* --debug-all */ - base_debugging |= DBG_ALL; - continue; - case 'P': /* debug parsing */ - base_debugging |= DBG_PARSING; - continue; - case 'R': /* debug raw */ - base_debugging |= DBG_RAW; - continue; - case 'C': /* debug control */ - base_debugging |= DBG_CONTROL; - continue; - case 'M': /* debug control more */ - base_debugging |= DBG_CONTROLMORE; - continue; - case 'X': /* debug private */ - base_debugging |= DBG_PRIVATE; - continue; -#endif - default: - usage("unknown option"); - } - /* break from loop */ - break; - } - - init_log("scepclient"); - cur_debugging = base_debugging; - init_rnd_pool(); - init_fetch(); - - if ((filetype_out == 0) && (!request_ca_certificate)) - usage ("--out filetype required"); - - if (request_ca_certificate && (filetype_out > 0 || filetype_in > 0)) - usage("in CA certificate request, no other --in or --out option allowed"); - - /* check if url is given, if cert output defined */ - if (((filetype_out & CERT) || request_ca_certificate) && !scep_url) - usage("URL of SCEP server required"); - - /* check for sanity of --in/--out */ - if (!filetype_in && (filetype_in > filetype_out)) - usage("cannot generate --out of given --in!"); - - /* - * input of PKCS#1 file - */ - private_key = alloc_thing(RSA_private_key_t, "RSA_private_key_t"); - - if (filetype_in & PKCS1) /* load an RSA key pair from file */ - { - prompt_pass_t pass = { "", FALSE, STDIN_FILENO }; - const char *path = concatenate_paths(PRIVATE_KEY_PATH, file_in_pkcs1); - - ugh = load_rsa_private_key(path, &pass, private_key); - } - else /* generate an RSA key pair */ - { - ugh = generate_rsa_private_key(rsa_keylength, private_key); - } - if (ugh != NULL) - exit_scepclient(ugh); - - /* check for minimum key length */ - if ((private_key->pub.k) < RSA_MIN_OCTETS) - { - exit_scepclient("length of RSA key has to be at least %d bits" - ,RSA_MIN_OCTETS * BITS_PER_BYTE); - } - - /* - * input of PKCS#10 file - */ - if (filetype_in & PKCS10) - { - /* user wants to load a pkcs10 request - * operation is not yet supported - * would require a PKCS#10 parsing function - - pkcs10 = pkcs10_read_from_file(file_in_pkcs10); - - */ - } - else - { - char buf[IDTOA_BUF]; - chunk_t dn = empty_chunk; - - dn.ptr = buf; - - if (distinguishedName == NULL) - { - char buf[BUF_LEN]; - int n = sprintf(buf, DEFAULT_DN); - - /* set the common name to the hostname */ - if (gethostname(buf + n, BUF_LEN - n) || strlen(buf) == n) - { - exit_scepclient("no hostname defined, use " - "--dn <distinguished name> option"); - } - distinguishedName = buf; - } - - DBG(DBG_CONTROL, - DBG_log("dn: '%s'", distinguishedName); - ) - ugh = atodn(distinguishedName, &dn); - if (ugh != NULL) - exit_scepclient(ugh); - - clonetochunk(subject, dn.ptr, dn.len, "subject dn"); - - DBG(DBG_CONTROL, - DBG_log("building pkcs10 object:") - ) - pkcs10 = pkcs10_build(private_key, subject, challengePassword - , subjectAltNames, pkcs10_signature_alg); - scep_generate_pkcs10_fingerprint(pkcs10->request, &fingerprint); - plog(" fingerprint: %.*s", (int)fingerprint.len, fingerprint.ptr); - } - - /* - * output of PKCS#10 file - */ - if (filetype_out & PKCS10) - { - const char *path = concatenate_paths(REQ_PATH, file_out_pkcs10); - - if (!write_chunk(path, "pkcs10", pkcs10->request, 0022, force)) - exit_scepclient("could not write pkcs10 file '%s'", path); - - filetype_out &= ~PKCS10; /* delete PKCS10 flag */ - } - - if (!filetype_out) - exit_scepclient(NULL); /* no further output required */ - - /* - * output of PKCS#1 file - */ - if (filetype_out & PKCS1) - { - const char *path = concatenate_paths(PRIVATE_KEY_PATH, file_out_pkcs1); - - DBG(DBG_CONTROL, - DBG_log("building pkcs1 object:") - ) - pkcs1 = pkcs1_build_private_key(private_key); - - if (!write_chunk(path, "pkcs1", pkcs1, 0066, force)) - exit_scepclient("could not write pkcs1 file '%s'", path); - - filetype_out &= ~PKCS1; /* delete PKCS1 flag */ - } - - if (!filetype_out) - exit_scepclient(NULL); /* no further output required */ - - scep_generate_transaction_id((const RSA_public_key_t *)private_key - , &transID, &serialNumber); - plog(" transaction ID: %.*s", (int)transID.len, transID.ptr); - - /* generate a self-signed X.509 certificate */ - x509_signer = alloc_thing(x509cert_t, "signer cert"); - *x509_signer = empty_x509cert; - x509_signer->serialNumber = serialNumber; - x509_signer->sigAlg = OID_SHA1_WITH_RSA; - x509_signer->issuer = subject; - x509_signer->notBefore = (notBefore)? notBefore - : time(NULL); - x509_signer->notAfter = (notAfter)? notAfter - : x509_signer->notBefore + validity; - x509_signer->subject = subject; - x509_signer->subjectAltName = subjectAltNames; - - build_x509cert(x509_signer, (const RSA_public_key_t *)private_key - , private_key); - - /* - * output of self-signed X.509 certificate file - */ - if (filetype_out & CERT_SELF) - { - const char *path = concatenate_paths(HOST_CERT_PATH, file_out_cert_self); - - if (!write_chunk(path, "self-signed cert", x509_signer->certificate, 0022, force)) - exit_scepclient("could not write self-signed cert file '%s'", path); -; - filetype_out &= ~CERT_SELF; /* delete CERT_SELF flag */ - } - - if (!filetype_out) - exit_scepclient(NULL); /* no further output required */ - - /* - * load ca encryption certificate - */ - { - const char *path = concatenate_paths(CA_CERT_PATH, file_in_cacert_enc); - cert_t cert; - - if (!load_cert(path, "encryption cacert", &cert)) - exit_scepclient("could not load encryption cacert file '%s'", path); - x509_ca_enc = cert.u.x509; - } - - /* - * input of PKCS#7 file - */ - if (filetype_in & PKCS7) - { - /* user wants to load a pkcs7 encrypted request - * operation is not yet supported! - * would require additional parsing of transaction-id - - pkcs7 = pkcs7_read_from_file(file_in_pkcs7); - - */ - } - else - { - DBG(DBG_CONTROL, - DBG_log("building pkcs7 request") - ) - pkcs7 = scep_build_request(pkcs10->request - , transID, SCEP_PKCSReq_MSG - , x509_ca_enc, pkcs7_symmetric_cipher - , x509_signer, pkcs7_digest_alg, private_key); - } - - /* - * output pkcs7 encrypted and signed certificate request - */ - if (filetype_out & PKCS7) - { - const char *path = concatenate_paths(REQ_PATH, file_out_pkcs7); - - if (!write_chunk(path, "pkcs7 encrypted request", pkcs7, 0022, force)) - exit_scepclient("could not write pkcs7 file '%s'", path); -; - filetype_out &= ~PKCS7; /* delete PKCS7 flag */ - } - - if (!filetype_out) - exit_scepclient(NULL); /* no further output required */ - - /* - * output certificate fetch from SCEP server - */ - if (filetype_out & CERT) - { - const char *path = concatenate_paths(CA_CERT_PATH, file_in_cacert_sig); - cert_t cert; - time_t poll_start; - - x509cert_t *certs = NULL; - chunk_t envelopedData = empty_chunk; - chunk_t certData = empty_chunk; - contentInfo_t data = empty_contentInfo; - scep_attributes_t attrs = empty_scep_attributes; - - if (!load_cert(path, "signature cacert", &cert)) - exit_scepclient("could not load signature cacert file '%s'", path); - x509_ca_sig = cert.u.x509; - - if (!scep_http_request(scep_url, pkcs7, SCEP_PKI_OPERATION - , request_type, &scep_response)) - { - exit_scepclient("did not receive a valid scep response"); - } - ugh = scep_parse_response(scep_response, transID, &data, &attrs - , x509_ca_sig); - if (ugh != NULL) - exit_scepclient(ugh); - - /* in case of manual mode, we are going into a polling loop */ - if (attrs.pkiStatus == SCEP_PENDING) - { - plog(" scep request pending, polling every %d seconds" - , poll_interval); - time(&poll_start); - issuerAndSubject = asn1_wrap(ASN1_SEQUENCE, "cc" - , x509_ca_sig->subject - , subject); - } - while (attrs.pkiStatus == SCEP_PENDING) - { - if (max_poll_time > 0 - && (time(NULL) - poll_start >= max_poll_time)) - { - exit_scepclient("maximum poll time reached: %d seconds" - , max_poll_time); - } - DBG(DBG_CONTROL, - DBG_log("going to sleep for %d seconds", poll_interval) - ) - sleep(poll_interval); - free(scep_response.ptr); - - DBG(DBG_CONTROL, - DBG_log("fingerprint: %.*s", (int)fingerprint.len, fingerprint.ptr); - DBG_log("transaction ID: %.*s", (int)transID.len, transID.ptr) - ) - - freeanychunk(getCertInitial); - getCertInitial = scep_build_request(issuerAndSubject - , transID, SCEP_GetCertInitial_MSG - , x509_ca_enc, pkcs7_symmetric_cipher - , x509_signer, pkcs7_digest_alg, private_key); - - if (!scep_http_request(scep_url, getCertInitial, SCEP_PKI_OPERATION - , request_type, &scep_response)) - { - exit_scepclient("did not receive a valid scep response"); - } - ugh = scep_parse_response(scep_response, transID, &data, &attrs - , x509_ca_sig); - if (ugh != NULL) - exit_scepclient(ugh); - } - - if (attrs.pkiStatus != SCEP_SUCCESS) - { - exit_scepclient("reply status is not 'SUCCESS'"); - } - - envelopedData = data.content; - - if (data.type != OID_PKCS7_DATA - || !parse_asn1_simple_object(&envelopedData, ASN1_OCTET_STRING, 0, "data")) - { - exit_scepclient("contentInfo is not of type 'data'"); - } - if (!pkcs7_parse_envelopedData(envelopedData, &certData - , serialNumber, private_key)) - { - exit_scepclient("could not decrypt envelopedData"); - } - if (!pkcs7_parse_signedData(certData, NULL, &certs, NULL, NULL)) - { - exit_scepclient("error parsing the scep response"); - } - freeanychunk(certData); - - /* store the end entity certificate */ - path = concatenate_paths(HOST_CERT_PATH, file_out_cert); - while (certs != NULL) - { - bool stored = FALSE; - x509cert_t *cert = certs; - - if (!cert->isCA) - { - if (stored) - exit_scepclient("multiple certs received, only first stored"); - if (!write_chunk(path, "requested cert", cert->certificate, 0022, force)) - exit_scepclient("could not write cert file '%s'", path); - stored = TRUE; - } - certs = certs->next; - free_x509cert(cert); - } - filetype_out &= ~CERT; /* delete CERT flag */ - } - - exit_scepclient(NULL); - return -1; /* should never be reached */ -} - - |