mirror of
https://git.code.sf.net/p/linux-ima/ima-evm-utils
synced 2025-04-28 14:43:37 +02:00
Changed to conform Linux kernel coding style
Changed to conform Linux kernel coding style, except 80 characters line length limit. Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
This commit is contained in:
Dmitry Kasatkin
parent
e91cb01e9a
commit
7e89de565e
358
src/evmctl.c
358
src/evmctl.c
@ -56,8 +56,8 @@
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#define USE_FPRINTF
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#ifdef USE_FPRINTF
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#define do_log(level, fmt, args...) if (level <= verbose) fprintf(stderr, fmt, ##args)
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#define do_log_dump(level, p, len) if (level <= verbose) do_dump(stderr, p, len)
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#define do_log(level, fmt, args...) ({ if (level <= verbose) fprintf(stderr, fmt, ##args); })
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#define do_log_dump(level, p, len) ({ if (level <= verbose) do_dump(stderr, p, len); })
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#else
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#define do_log(level, fmt, args...) syslog(level, fmt, ##args)
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#define do_log_dump(p, len)
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@ -107,25 +107,23 @@ enum digest_algo {
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};
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struct pubkey_hdr {
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uint8_t version; /* key format version */
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time_t timestamp; /* key made, always 0 for now */
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uint8_t algo;
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uint8_t nmpi;
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char mpi[0];
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uint8_t version; /* key format version */
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time_t timestamp; /* key made, always 0 for now */
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uint8_t algo;
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uint8_t nmpi;
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char mpi[0];
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} __attribute__ ((packed));
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struct signature_hdr {
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uint8_t version; /* signature format version */
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time_t timestamp; /* signature made */
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uint8_t algo;
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uint8_t hash;
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uint8_t keyid[8];
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uint8_t nmpi;
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char mpi[0];
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uint8_t version; /* signature format version */
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time_t timestamp; /* signature made */
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uint8_t algo;
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uint8_t hash;
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uint8_t keyid[8];
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uint8_t nmpi;
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char mpi[0];
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} __attribute__ ((packed));
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static char *evm_config_xattrnames[] = {
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"security.selinux",
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"security.SMACK64",
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@ -135,35 +133,34 @@ static char *evm_config_xattrnames[] = {
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};
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struct command {
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char *name;
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int (*func)(struct command *cmd);
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int cmd;
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char *arg;
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char *msg; /* extra info message */
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char *name;
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int (*func)(struct command *cmd);
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int cmd;
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char *arg;
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char *msg; /* extra info message */
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};
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static int verbose = LOG_INFO - 1;
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static int g_argc;
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static char **g_argv;
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static int set_xattr = 1;
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static int digest = 0;
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static int digsig = 0;
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static char *hash_algo = "sha1";
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static int binkey = 0;
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static char *keypass;
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static int verbose = LOG_INFO - 1;
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static int g_argc;
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static char **g_argv;
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static int set_xattr = 1;
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static int digest;
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static int digsig;
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static char *hash_algo = "sha1";
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static int binkey;
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static char *keypass;
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extern struct command cmds[];
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struct command cmds[];
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static void print_usage(struct command *cmd);
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static void do_dump(FILE *fp, const void *ptr, int len)
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{
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int i;
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uint8_t *data = (uint8_t *)ptr;
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int i;
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uint8_t *data = (uint8_t *) ptr;
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for (i = 0; i < len; i++) {
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fprintf(fp, "%02x", data[i]);
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}
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fprintf(fp, "\n");
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for (i = 0; i < len; i++)
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fprintf(fp, "%02x", data[i]);
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fprintf(fp, "\n");
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}
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static void dump(const void *ptr, int len)
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@ -176,7 +173,7 @@ static inline int get_filesize(const char *filename)
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struct stat stats;
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/* Need to know the file length */
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stat(filename, &stats);
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return (int) stats.st_size;
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return (int)stats.st_size;
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}
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static inline int get_fdsize(int fd)
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@ -184,7 +181,7 @@ static inline int get_fdsize(int fd)
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struct stat stats;
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/* Need to know the file length */
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fstat(fd, &stats);
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return (int) stats.st_size;
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return (int)stats.st_size;
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}
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static int bin2file(const char *file, const char *ext, const unsigned char *data, int len)
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@ -192,7 +189,7 @@ static int bin2file(const char *file, const char *ext, const unsigned char *data
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FILE *fp;
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char name[strlen(file) + (ext ? strlen(ext) : 0) + 2];
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int err;
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if (ext)
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sprintf(name, "%s.%s", file, ext);
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else
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@ -215,7 +212,7 @@ static char *file2bin(const char *file, int *size)
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FILE *fp;
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int len;
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char *data;
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len = get_filesize(file);
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fp = fopen(file, "r");
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if (!fp) {
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@ -226,9 +223,9 @@ static char *file2bin(const char *file, int *size)
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if (!fread(data, len, 1, fp))
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len = 0;
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fclose(fp);
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*size = len;
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return data;
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return data;
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}
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/*
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@ -244,24 +241,23 @@ static int key2bin(RSA *key, unsigned char *pub)
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pkh->timestamp = 0; /* PEM has no timestamp?? */
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pkh->algo = PUBKEY_ALGO_RSA;
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pkh->nmpi = 2;
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offset += sizeof(*pkh);
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// MPIs
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len = BN_num_bytes(key->n);
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b = BN_num_bits(key->n);
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pub[offset++] = b >> 8;
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pub[offset++] = b & 0xff;
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BN_bn2bin(key->n, &pub[offset]);
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offset += len;
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len = BN_num_bytes(key->e);
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b = BN_num_bits(key->e);
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pub[offset++] = b >> 8;
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pub[offset++] = b & 0xff;
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BN_bn2bin(key->e, &pub[offset]);
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offset += len;
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return offset;
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}
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@ -283,32 +279,31 @@ static int read_key(const char *inkey, unsigned char *pub)
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log_errno("PEM_read_RSA_PUBKEY() failed");
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return -1;
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}
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len = key2bin(key, pub);
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RSA_free(key);
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return len;
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}
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static void calc_keyid(uint8_t *keyid, char *str, const unsigned char *pkey, int len)
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{
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uint8_t sha1[SHA_DIGEST_LENGTH];
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uint64_t id;
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log_debug("pkey:\n");
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log_debug_dump(pkey, len);
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SHA1(pkey, len, sha1);
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//sha1[12 - 19] is exactly keyid from gpg file
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SHA1(pkey, len, sha1);
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/* sha1[12 - 19] is exactly keyid from gpg file */
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memcpy(keyid, sha1 + 12, 8);
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log_debug("keyid:\n");
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log_debug_dump(keyid, 8);
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id = __be64_to_cpup((__be64 *)keyid);
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id = __be64_to_cpup((__be64 *) keyid);
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sprintf(str, "%llX", (unsigned long long)id);
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log_info("keyid: %s\n", str);
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log_info("keyid: %s\n", str);
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}
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static int sign_hash(const unsigned char *hash, int size, const char *keyfile, unsigned char *sig)
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@ -322,11 +317,11 @@ static int sign_hash(const unsigned char *hash, int size, const char *keyfile, u
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unsigned char sighash[20];
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struct signature_hdr *hdr = (struct signature_hdr *)sig;
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uint16_t *blen;
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log_info("hash: ");
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log_dump(hash, size);
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fp = fopen(keyfile, "r");
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fp = fopen(keyfile, "r");
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if (!fp) {
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log_errno("Unable to open keyfile %s", keyfile);
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return -1;
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@ -343,12 +338,12 @@ static int sign_hash(const unsigned char *hash, int size, const char *keyfile, u
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time(&hdr->timestamp);
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hdr->algo = PUBKEY_ALGO_RSA;
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hdr->hash = DIGEST_ALGO_SHA1;
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len = key2bin(key, pub);
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calc_keyid(hdr->keyid, name, pub, len);
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hdr->nmpi = 1;
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SHA1_Init(&ctx);
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SHA1_Update(&ctx, hash, size);
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SHA1_Update(&ctx, hdr, sizeof(*hdr));
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@ -364,16 +359,16 @@ static int sign_hash(const unsigned char *hash, int size, const char *keyfile, u
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}
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len = err;
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/* we add bit length of the signature to make it gnupg compatible */
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blen = (uint16_t *)(sig + sizeof(*hdr));
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blen = (uint16_t *) (sig + sizeof(*hdr));
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*blen = __cpu_to_be16(len << 3);
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len += sizeof(*hdr) + 2;
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log_info("evm/ima signature: %d bytes\n", len);
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if (!set_xattr || verbose >= LOG_INFO)
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dump(sig, len);
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return len;
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return len;
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}
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static int calc_evm_hash(const char *file, const char *keyfile, unsigned char *hash)
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@ -386,25 +381,25 @@ static int calc_evm_hash(const char *file, const char *keyfile, unsigned char *h
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unsigned int mdlen;
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char **xattrname;
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char xattr_value[1024];
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fd = open(file, 0);
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if (fd < 0) {
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log_errno("Unable to open %s", file);
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return -1;
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}
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if (fstat(fd, &st)) {
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log_errno("fstat() failed");
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return -1;
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}
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if (ioctl(fd, EXT34_IOC_GETVERSION, &generation)) {
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log_errno("ioctl() failed");
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return -1;
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}
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close(fd);
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log_info("generation: %u\n", generation);
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md = EVP_get_digestbyname("sha1");
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@ -425,7 +420,7 @@ static int calc_evm_hash(const char *file, const char *keyfile, unsigned char *h
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log_info("no attr: %s\n", *xattrname);
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continue;
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}
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//log_debug("name: %s, value: %s, size: %d\n", *xattrname, xattr_value, err);
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/*log_debug("name: %s, value: %s, size: %d\n", *xattrname, xattr_value, err);*/
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log_info("name: %s, size: %d\n", *xattrname, err);
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log_debug_dump(xattr_value, err);
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err = EVP_DigestUpdate(&ctx, xattr_value, err);
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@ -441,8 +436,8 @@ static int calc_evm_hash(const char *file, const char *keyfile, unsigned char *h
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hmac_misc.uid = st.st_uid;
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hmac_misc.gid = st.st_gid;
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hmac_misc.mode = st.st_mode;
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err = EVP_DigestUpdate(&ctx, (const unsigned char*)&hmac_misc, sizeof(hmac_misc));
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err = EVP_DigestUpdate(&ctx, (const unsigned char *)&hmac_misc, sizeof(hmac_misc));
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if (!err) {
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log_errno("EVP_DigestUpdate() failed");
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return -1;
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@ -452,7 +447,7 @@ static int calc_evm_hash(const char *file, const char *keyfile, unsigned char *h
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log_errno("EVP_DigestFinal() failed");
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return -1;
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}
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return 0;
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}
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@ -463,11 +458,11 @@ static int sign_evm(const char *file, const char *key)
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int err;
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calc_evm_hash(file, key, hash);
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err = sign_hash(hash, sizeof(hash), key, sig + 1);
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if (err < 0)
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return err;
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if (set_xattr) {
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err = setxattr(file, "security.evm", sig, err + 1, 0);
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if (err < 0) {
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@ -475,7 +470,7 @@ static int sign_evm(const char *file, const char *key)
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return err;
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}
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}
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return 0;
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}
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@ -483,7 +478,7 @@ static int calc_file_hash(const char *file, uint8_t *hash)
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{
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EVP_MD_CTX ctx;
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const EVP_MD *md;
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uint8_t *data;
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uint8_t *data;
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int err, size, bs = DATA_SIZE;
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size_t len;
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unsigned int mdlen;
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@ -494,13 +489,13 @@ static int calc_file_hash(const char *file, uint8_t *hash)
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log_errno("malloc failed");
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return -1;
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}
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fp = fopen(file, "r");
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if (!fp) {
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log_errno("Unable to open %s", file);
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return -1;
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}
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md = EVP_get_digestbyname(hash_algo);
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if (!md) {
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log_errno("EVP_get_digestbyname() failed");
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@ -537,9 +532,9 @@ static int calc_file_hash(const char *file, uint8_t *hash)
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}
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fclose(fp);
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free(data);
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return mdlen;
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}
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@ -564,7 +559,7 @@ static int calc_dir_hash(const char *file, uint8_t *hash)
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log_errno("Unable to open %s", file);
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return -1;
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}
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md = EVP_get_digestbyname(hash_algo);
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if (!md) {
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log_errno("EVP_get_digestbyname() failed");
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@ -578,7 +573,7 @@ static int calc_dir_hash(const char *file, uint8_t *hash)
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}
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while ((de = readdir(dir))) {
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//printf("entry: ino: %lu, %s\n", de->d_ino, de->d_name);
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/*log_debug("entry: ino: %lu, %s\n", de->d_ino, de->d_name);*/
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for (prev = NULL, pos = head; pos; prev = pos, pos = pos->next) {
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if (de->d_ino < pos->de.d_ino)
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break;
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@ -591,7 +586,7 @@ static int calc_dir_hash(const char *file, uint8_t *hash)
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else
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prev->next = cur;
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}
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for (cur = head; cur; cur = pos) {
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pos = cur->next;
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ino = cur->de.d_ino;
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@ -608,7 +603,7 @@ static int calc_dir_hash(const char *file, uint8_t *hash)
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}
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free(cur);
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}
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err = EVP_DigestFinal(&ctx, hash, &mdlen);
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if (!err) {
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log_errno("EVP_DigestFinal() failed");
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@ -616,13 +611,13 @@ static int calc_dir_hash(const char *file, uint8_t *hash)
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}
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closedir(dir);
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return mdlen;
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}
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static int hash_ima(const char *file)
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{
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unsigned char hash[65] = "\x01";// MAX hash size + 1
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unsigned char hash[65] = "\x01"; /* MAX hash size + 1 */
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int err;
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struct stat st;
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@ -639,7 +634,7 @@ static int hash_ima(const char *file)
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err = calc_file_hash(file, hash + 1);
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if (err < 0)
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return err;
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if (verbose >= LOG_INFO)
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log_info("hash: ");
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@ -653,7 +648,7 @@ static int hash_ima(const char *file)
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return err;
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}
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}
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return 0;
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}
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@ -666,7 +661,7 @@ static int cmd_hash_ima(struct command *cmd)
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print_usage(cmd);
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return 1;
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}
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return hash_ima(file);
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}
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@ -675,15 +670,15 @@ static int sign_ima(const char *file, const char *key)
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unsigned char hash[64];
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unsigned char sig[1024] = "\x03";
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int err;
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err = calc_file_hash(file, hash);
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if (err < 0)
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return err;
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err = sign_hash(hash, err, key, sig + 1);
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if (err < 0)
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return err;
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if (set_xattr) {
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err = setxattr(file, "security.ima", sig, err + 1, 0);
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if (err < 0) {
|
||||
@ -691,55 +686,55 @@ static int sign_ima(const char *file, const char *key)
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cmd_sign_ima(struct command *cmd)
|
||||
{
|
||||
char *key, *file = g_argv[optind++];
|
||||
|
||||
|
||||
if (!file) {
|
||||
log_err("Parameters missing\n");
|
||||
print_usage(cmd);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
key = g_argv[optind++];
|
||||
if (!key)
|
||||
key = "/etc/keys/privkey_evm.pem";
|
||||
|
||||
|
||||
return sign_ima(file, key);
|
||||
|
||||
|
||||
}
|
||||
|
||||
static int cmd_sign_evm(struct command *cmd)
|
||||
{
|
||||
char *key, *file = g_argv[optind++];
|
||||
int err;
|
||||
|
||||
|
||||
if (!file) {
|
||||
log_err("Parameters missing\n");
|
||||
print_usage(cmd);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
key = g_argv[optind++];
|
||||
if (!key)
|
||||
key = "/etc/keys/privkey_evm.pem";
|
||||
|
||||
|
||||
if (digsig) {
|
||||
err = sign_ima(file, key);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
if (digest) {
|
||||
err = hash_ima(file);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
return sign_evm(file, key);
|
||||
}
|
||||
|
||||
@ -752,11 +747,11 @@ static int verify_hash(const unsigned char *hash, int size, unsigned char *sig,
|
||||
FILE *fp;
|
||||
unsigned char sighash[20];
|
||||
struct signature_hdr *hdr = (struct signature_hdr *)sig;
|
||||
|
||||
|
||||
log_info("hash: ");
|
||||
log_dump(hash, size);
|
||||
|
||||
fp = fopen(keyfile, "r");
|
||||
|
||||
fp = fopen(keyfile, "r");
|
||||
if (!fp) {
|
||||
log_errno("Unable to open keyfile %s", keyfile);
|
||||
return -1;
|
||||
@ -783,15 +778,15 @@ static int verify_hash(const unsigned char *hash, int size, unsigned char *sig,
|
||||
}
|
||||
|
||||
len = err;
|
||||
|
||||
|
||||
if (len != sizeof(sighash) || memcmp(out, sighash, len) != 0) {
|
||||
log_errno("Verification failed: %d", err);
|
||||
return -1;
|
||||
} else {
|
||||
//log_info("Verification is OK\n");
|
||||
/*log_info("Verification is OK\n");*/
|
||||
printf("Verification is OK\n");
|
||||
}
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -802,35 +797,35 @@ static int verify_evm(const char *file, const char *key)
|
||||
int err;
|
||||
|
||||
calc_evm_hash(file, key, hash);
|
||||
|
||||
|
||||
err = getxattr(file, "security.evm", sig, sizeof(sig));
|
||||
if (err < 0) {
|
||||
log_errno("getxattr failed");
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
if (sig[0] != 0x03) {
|
||||
log_errno("security.evm has not signature");
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
return verify_hash(hash, sizeof(hash), sig + 1, err - 1, key);
|
||||
}
|
||||
|
||||
static int cmd_verify_evm(struct command *cmd)
|
||||
{
|
||||
char *key, *file = g_argv[optind++];
|
||||
|
||||
|
||||
if (!file) {
|
||||
log_err("Parameters missing\n");
|
||||
print_usage(cmd);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
key = g_argv[optind++];
|
||||
if (!key)
|
||||
key = "/etc/keys/pubkey_evm.pem";
|
||||
|
||||
|
||||
return verify_evm(file, key);
|
||||
}
|
||||
|
||||
@ -841,24 +836,24 @@ static int cmd_convert(struct command *cmd)
|
||||
char name[20];
|
||||
int len;
|
||||
uint8_t keyid[8];
|
||||
|
||||
|
||||
inkey = g_argv[optind++];
|
||||
if (!inkey)
|
||||
inkey = "/etc/keys/pubkey_evm.pem";
|
||||
else
|
||||
outkey = g_argv[optind++];
|
||||
|
||||
|
||||
if (!outkey)
|
||||
outkey = "pubkey_evm.bin";
|
||||
|
||||
log_info("Convert public key %s to %s\n", inkey, outkey);
|
||||
log_info("Convert public key %s to %s\n", inkey, outkey);
|
||||
|
||||
len = read_key(inkey, pub);
|
||||
if (len < 0)
|
||||
return -1;
|
||||
|
||||
|
||||
calc_keyid(keyid, name, pub, len);
|
||||
|
||||
|
||||
bin2file(outkey, name, pub, len);
|
||||
|
||||
return 0;
|
||||
@ -871,26 +866,26 @@ static int cmd_import_bin(struct command *cmd)
|
||||
char *key, name[20];
|
||||
key_serial_t id;
|
||||
uint8_t keyid[8];
|
||||
|
||||
|
||||
inkey = g_argv[optind++];
|
||||
if (!inkey)
|
||||
inkey = "/etc/keys/pubkey_evm.bin";
|
||||
else
|
||||
ring = g_argv[optind++];
|
||||
|
||||
if (!ring)
|
||||
id = KEY_SPEC_USER_KEYRING;
|
||||
else
|
||||
ring = g_argv[optind++];
|
||||
|
||||
if (!ring)
|
||||
id = KEY_SPEC_USER_KEYRING;
|
||||
else
|
||||
id = atoi(ring);
|
||||
|
||||
key = file2bin(inkey, &len);
|
||||
if (!key)
|
||||
return -1;
|
||||
|
||||
|
||||
calc_keyid(keyid, name, (unsigned char *)key, len);
|
||||
|
||||
log_info("Importing public key %s from file %s into keyring %d\n", name, inkey, id);
|
||||
|
||||
log_info("Importing public key %s from file %s into keyring %d\n", name, inkey, id);
|
||||
|
||||
id = add_key("user", name, key, len, id);
|
||||
if (id < 0) {
|
||||
log_errno("add_key failed");
|
||||
@ -899,9 +894,9 @@ static int cmd_import_bin(struct command *cmd)
|
||||
|
||||
log_info("keyid: %d\n", id);
|
||||
printf("%d\n", id);
|
||||
|
||||
|
||||
free(key);
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -915,26 +910,26 @@ static int cmd_import(struct command *cmd)
|
||||
|
||||
if (binkey)
|
||||
return cmd_import_bin(cmd);
|
||||
|
||||
|
||||
inkey = g_argv[optind++];
|
||||
if (!inkey)
|
||||
inkey = "/etc/keys/pubkey_evm.pem";
|
||||
else
|
||||
ring = g_argv[optind++];
|
||||
|
||||
if (!ring)
|
||||
id = KEY_SPEC_USER_KEYRING;
|
||||
else
|
||||
ring = g_argv[optind++];
|
||||
|
||||
if (!ring)
|
||||
id = KEY_SPEC_USER_KEYRING;
|
||||
else
|
||||
id = atoi(ring);
|
||||
|
||||
len = read_key(inkey, key);
|
||||
if (len < 0)
|
||||
return -1;
|
||||
|
||||
|
||||
calc_keyid(keyid, name, key, len);
|
||||
|
||||
log_info("Importing public key %s from file %s into keyring %d\n", name, inkey, id);
|
||||
|
||||
|
||||
log_info("Importing public key %s from file %s into keyring %d\n", name, inkey, id);
|
||||
|
||||
id = add_key("user", name, key, len, id);
|
||||
if (id < 0) {
|
||||
log_errno("add_key failed");
|
||||
@ -943,7 +938,7 @@ static int cmd_import(struct command *cmd)
|
||||
|
||||
log_info("keyid: %d\n", id);
|
||||
printf("%d\n", id);
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -961,13 +956,13 @@ static int calc_evm_hmac(const char *file, const char *keyfile, unsigned char *h
|
||||
char *key;
|
||||
int keylen;
|
||||
unsigned char evmkey[MAX_KEY_SIZE];
|
||||
|
||||
|
||||
key = file2bin(keyfile, &keylen);
|
||||
if (!key) {
|
||||
log_errno("Unable to read a key: %s\n", keyfile);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
if (keylen > sizeof(evmkey)) {
|
||||
log_errno("key is too long\n");
|
||||
return -1;
|
||||
@ -976,25 +971,25 @@ static int calc_evm_hmac(const char *file, const char *keyfile, unsigned char *h
|
||||
/* EVM key is 128 bytes */
|
||||
memcpy(evmkey, key, keylen);
|
||||
memset(evmkey + keylen, 0, sizeof(evmkey) - keylen);
|
||||
|
||||
|
||||
fd = open(file, 0);
|
||||
if (fd < 0) {
|
||||
log_errno("Unable to open %s", file);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
if (fstat(fd, &st)) {
|
||||
log_errno("fstat() failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
if (ioctl(fd, EXT34_IOC_GETVERSION, &generation)) {
|
||||
log_errno("ioctl() failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
close(fd);
|
||||
|
||||
|
||||
log_info("generation: %u\n", generation);
|
||||
|
||||
HMAC_Init(&ctx, evmkey, sizeof(evmkey), EVP_sha1());
|
||||
@ -1005,7 +1000,7 @@ static int calc_evm_hmac(const char *file, const char *keyfile, unsigned char *h
|
||||
log_info("no attr: %s\n", *xattrname);
|
||||
continue;
|
||||
}
|
||||
//log_debug("name: %s, value: %s, size: %d\n", *xattrname, xattr_value, err);
|
||||
/*log_debug("name: %s, value: %s, size: %d\n", *xattrname, xattr_value, err);*/
|
||||
log_info("name: %s, size: %d\n", *xattrname, err);
|
||||
log_debug_dump(xattr_value, err);
|
||||
HMAC_Update(&ctx, xattr_value, err);
|
||||
@ -1017,11 +1012,11 @@ static int calc_evm_hmac(const char *file, const char *keyfile, unsigned char *h
|
||||
hmac_misc.uid = st.st_uid;
|
||||
hmac_misc.gid = st.st_gid;
|
||||
hmac_misc.mode = st.st_mode;
|
||||
|
||||
HMAC_Update(&ctx, (const unsigned char*)&hmac_misc, sizeof(hmac_misc));
|
||||
|
||||
HMAC_Update(&ctx, (const unsigned char *)&hmac_misc, sizeof(hmac_misc));
|
||||
HMAC_Final(&ctx, hash, &mdlen);
|
||||
HMAC_CTX_cleanup(&ctx);
|
||||
|
||||
|
||||
free(key);
|
||||
|
||||
return 0;
|
||||
@ -1034,12 +1029,12 @@ static int hmac_evm(const char *file, const char *key)
|
||||
int err;
|
||||
|
||||
calc_evm_hmac(file, key, hash);
|
||||
|
||||
|
||||
log_info("hmac: ");
|
||||
log_dump(hash, sizeof(hash));
|
||||
memcpy(sig + 1, hash, sizeof(hash));
|
||||
err = sizeof(hash);
|
||||
|
||||
|
||||
if (set_xattr) {
|
||||
err = setxattr(file, "security.evm", sig, err + 1, 0);
|
||||
if (err < 0) {
|
||||
@ -1047,7 +1042,7 @@ static int hmac_evm(const char *file, const char *key)
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1055,29 +1050,29 @@ static int cmd_hmac_evm(struct command *cmd)
|
||||
{
|
||||
char *key, *file = g_argv[optind++];
|
||||
int err;
|
||||
|
||||
|
||||
if (!file) {
|
||||
log_err("Parameters missing\n");
|
||||
print_usage(cmd);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
key = g_argv[optind++];
|
||||
if (!key)
|
||||
key = "/etc/keys/privkey_evm.pem";
|
||||
|
||||
|
||||
if (digsig) {
|
||||
err = sign_ima(file, key);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
if (digest) {
|
||||
err = hash_ima(file);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
return hmac_evm(file, "/etc/keys/evm-key-plain");
|
||||
}
|
||||
|
||||
@ -1097,7 +1092,7 @@ static void print_full_usage(struct command *cmd)
|
||||
|
||||
static int print_command_usage(struct command *cmds, char *command)
|
||||
{
|
||||
struct command *cmd;
|
||||
struct command *cmd;
|
||||
|
||||
for (cmd = cmds; cmd->name; cmd++) {
|
||||
if (strcmp(cmd->name, command) == 0) {
|
||||
@ -1106,13 +1101,13 @@ static int print_command_usage(struct command *cmds, char *command)
|
||||
}
|
||||
}
|
||||
printf("invalid command: %s\n", command);
|
||||
return 1;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void print_all_usage(struct command *cmds)
|
||||
{
|
||||
struct command *cmd;
|
||||
|
||||
struct command *cmd;
|
||||
|
||||
for (cmd = cmds; cmd->name; cmd++) {
|
||||
if (cmd->arg)
|
||||
printf("%s %s\n", cmd->name, cmd->arg);
|
||||
@ -1123,8 +1118,8 @@ static void print_all_usage(struct command *cmds)
|
||||
|
||||
static int call_command(struct command *cmds, char *command)
|
||||
{
|
||||
struct command *cmd;
|
||||
|
||||
struct command *cmd;
|
||||
|
||||
for (cmd = cmds; cmd->name; cmd++) {
|
||||
if (strcasecmp(cmd->name, command) == 0)
|
||||
return cmd->func(cmd);
|
||||
@ -1151,17 +1146,17 @@ static void usage(void)
|
||||
|
||||
struct command cmds[] = {
|
||||
{"help", cmd_help, 0, "<command>"},
|
||||
{"import", cmd_import, 0, "[--bin] inkey keyring", "Import public key (PEM/bin) into the keyring.\n" },
|
||||
{"convert", cmd_convert, 0, "inkey outkey", "Convert PEM public key into IMA/EVM kernel friendly format.\n" },
|
||||
{"sign", cmd_sign_evm, 0, "[--imahash | --imasig ] file [key]", "Sign file metadata.\n" },
|
||||
{"verify", cmd_verify_evm, 0, "file", "Verify EVM signature (for debugging).\n" },
|
||||
{"ima_sign", cmd_sign_ima, 0, "file [key]", "Sign file content.\n" },
|
||||
{"ima_hash", cmd_hash_ima, 0, "file", "Hash file content.\n" },
|
||||
{"hmac", cmd_hmac_evm, 0, "[--imahash | --imasig ] file [key]", "Sign file metadata with HMAC (for debugging).\n" },
|
||||
{"import", cmd_import, 0, "[--bin] inkey keyring", "Import public key (PEM/bin) into the keyring.\n"},
|
||||
{"convert", cmd_convert, 0, "inkey outkey", "Convert PEM public key into IMA/EVM kernel friendly format.\n"},
|
||||
{"sign", cmd_sign_evm, 0, "[--imahash | --imasig ] file [key]", "Sign file metadata.\n"},
|
||||
{"verify", cmd_verify_evm, 0, "file", "Verify EVM signature (for debugging).\n"},
|
||||
{"ima_sign", cmd_sign_ima, 0, "file [key]", "Sign file content.\n"},
|
||||
{"ima_hash", cmd_hash_ima, 0, "file", "Hash file content.\n"},
|
||||
{"hmac", cmd_hmac_evm, 0, "[--imahash | --imasig ] file [key]", "Sign file metadata with HMAC (for debugging).\n"},
|
||||
{0, 0, 0, NULL}
|
||||
};
|
||||
|
||||
static struct option opts[] = {
|
||||
static struct option opts[] = {
|
||||
{"help", 0, 0, 'h'},
|
||||
{"inkey", 1, 0, 'k'},
|
||||
{"imasig", 0, 0, 's'},
|
||||
@ -1184,7 +1179,7 @@ int main(int argc, char *argv[])
|
||||
c = getopt_long(argc, argv, "hk:vnsda:bp:", opts, &lind);
|
||||
if (c == -1)
|
||||
break;
|
||||
|
||||
|
||||
switch (c) {
|
||||
case 'h':
|
||||
usage();
|
||||
@ -1203,7 +1198,8 @@ int main(int argc, char *argv[])
|
||||
digsig = 1;
|
||||
break;
|
||||
case 'n':
|
||||
set_xattr = 0; // do not set Extended Attributes... just print signature
|
||||
/* do not set Extended Attributes... just print signature */
|
||||
set_xattr = 0;
|
||||
break;
|
||||
case 'a':
|
||||
hash_algo = optarg;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user