| /* crypto/pem/pem_lib.c */ |
| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] |
| */ |
| |
| #include <openssl/opensslconf.h> |
| #if !defined(OPENSSL_SYS_STARBOARD) |
| #include <ctype.h> |
| #include <stdio.h> |
| #endif // !defined(OPENSSL_SYS_STARBOARD) |
| #include "cryptlib.h" |
| #include <openssl/buffer.h> |
| #include <openssl/objects.h> |
| #include <openssl/evp.h> |
| #include <openssl/rand.h> |
| #include <openssl/x509.h> |
| #include <openssl/pem.h> |
| #include <openssl/pkcs12.h> |
| #include "asn1_locl.h" |
| #ifndef OPENSSL_NO_DES |
| # include <openssl/des.h> |
| #endif |
| #ifndef OPENSSL_NO_ENGINE |
| # include <openssl/engine.h> |
| #endif |
| |
| const char PEM_version[] = "PEM" OPENSSL_VERSION_PTEXT; |
| |
| #define MIN_LENGTH 4 |
| |
| static int load_iv(char **fromp, unsigned char *to, int num); |
| static int check_pem(const char *nm, const char *name); |
| int pem_check_suffix(const char *pem_str, const char *suffix); |
| |
| int PEM_def_callback(char *buf, int num, int w, void *key) |
| { |
| #ifdef OPENSSL_NO_FP_API |
| /* |
| * We should not ever call the default callback routine from windows. |
| */ |
| PEMerr(PEM_F_PEM_DEF_CALLBACK, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
| return (-1); |
| #elif defined(OPENSSL_NO_UI) |
| /* Should not call this if OPENSSL_NO_UI is defined. */ |
| PEMerr(PEM_F_PEM_DEF_CALLBACK, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
| return (-1); |
| #else |
| int i, j; |
| const char *prompt; |
| if (key) { |
| i = OPENSSL_port_strlen(key); |
| i = (i > num) ? num : i; |
| OPENSSL_port_memcpy(buf, key, i); |
| return (i); |
| } |
| |
| prompt = EVP_get_pw_prompt(); |
| if (prompt == NULL) |
| prompt = "Enter PEM pass phrase:"; |
| |
| for (;;) { |
| i = EVP_read_pw_string_min(buf, MIN_LENGTH, num, prompt, w); |
| if (i != 0) { |
| PEMerr(PEM_F_PEM_DEF_CALLBACK, PEM_R_PROBLEMS_GETTING_PASSWORD); |
| OPENSSL_port_memset(buf, 0, (unsigned int)num); |
| return (-1); |
| } |
| j = OPENSSL_port_strlen(buf); |
| if (j < MIN_LENGTH) { |
| OPENSSL_port_printferr( |
| "phrase is too short, needs to be at least %d chars\n", |
| MIN_LENGTH); |
| } else |
| break; |
| } |
| return (j); |
| #endif |
| } |
| |
| void PEM_proc_type(char *buf, int type) |
| { |
| const char *str; |
| |
| if (type == PEM_TYPE_ENCRYPTED) |
| str = "ENCRYPTED"; |
| else if (type == PEM_TYPE_MIC_CLEAR) |
| str = "MIC-CLEAR"; |
| else if (type == PEM_TYPE_MIC_ONLY) |
| str = "MIC-ONLY"; |
| else |
| str = "BAD-TYPE"; |
| |
| BUF_strlcat(buf, "Proc-Type: 4,", PEM_BUFSIZE); |
| BUF_strlcat(buf, str, PEM_BUFSIZE); |
| BUF_strlcat(buf, "\n", PEM_BUFSIZE); |
| } |
| |
| void PEM_dek_info(char *buf, const char *type, int len, char *str) |
| { |
| static const unsigned char map[17] = "0123456789ABCDEF"; |
| long i; |
| int j; |
| |
| BUF_strlcat(buf, "DEK-Info: ", PEM_BUFSIZE); |
| BUF_strlcat(buf, type, PEM_BUFSIZE); |
| BUF_strlcat(buf, ",", PEM_BUFSIZE); |
| j = OPENSSL_port_strlen(buf); |
| if (j + (len * 2) + 1 > PEM_BUFSIZE) |
| return; |
| for (i = 0; i < len; i++) { |
| buf[j + i * 2] = map[(str[i] >> 4) & 0x0f]; |
| buf[j + i * 2 + 1] = map[(str[i]) & 0x0f]; |
| } |
| buf[j + i * 2] = '\n'; |
| buf[j + i * 2 + 1] = '\0'; |
| } |
| |
| #ifndef OPENSSL_NO_FP_API |
| void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x, |
| pem_password_cb *cb, void *u) |
| { |
| BIO *b; |
| void *ret; |
| |
| if ((b = BIO_new(BIO_s_file())) == NULL) { |
| PEMerr(PEM_F_PEM_ASN1_READ, ERR_R_BUF_LIB); |
| return (0); |
| } |
| BIO_set_fp(b, fp, BIO_NOCLOSE); |
| ret = PEM_ASN1_read_bio(d2i, name, b, x, cb, u); |
| BIO_free(b); |
| return (ret); |
| } |
| #endif |
| |
| static int check_pem(const char *nm, const char *name) |
| { |
| /* Normal matching nm and name */ |
| if (!OPENSSL_port_strcmp(nm, name)) |
| return 1; |
| |
| /* Make PEM_STRING_EVP_PKEY match any private key */ |
| |
| if (!OPENSSL_port_strcmp(name, PEM_STRING_EVP_PKEY)) { |
| int slen; |
| const EVP_PKEY_ASN1_METHOD *ameth; |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_PKCS8)) |
| return 1; |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_PKCS8INF)) |
| return 1; |
| slen = pem_check_suffix(nm, "PRIVATE KEY"); |
| if (slen > 0) { |
| /* |
| * NB: ENGINE implementations wont contain a deprecated old |
| * private key decode function so don't look for them. |
| */ |
| ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen); |
| if (ameth && ameth->old_priv_decode) |
| return 1; |
| } |
| return 0; |
| } |
| |
| if (!OPENSSL_port_strcmp(name, PEM_STRING_PARAMETERS)) { |
| int slen; |
| const EVP_PKEY_ASN1_METHOD *ameth; |
| slen = pem_check_suffix(nm, "PARAMETERS"); |
| if (slen > 0) { |
| ENGINE *e; |
| ameth = EVP_PKEY_asn1_find_str(&e, nm, slen); |
| if (ameth) { |
| int r; |
| if (ameth->param_decode) |
| r = 1; |
| else |
| r = 0; |
| #ifndef OPENSSL_NO_ENGINE |
| if (e) |
| ENGINE_finish(e); |
| #endif |
| return r; |
| } |
| } |
| return 0; |
| } |
| |
| /* Permit older strings */ |
| |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_X509_OLD) && !OPENSSL_port_strcmp(name, PEM_STRING_X509)) |
| return 1; |
| |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_X509_REQ_OLD) && |
| !OPENSSL_port_strcmp(name, PEM_STRING_X509_REQ)) |
| return 1; |
| |
| /* Allow normal certs to be read as trusted certs */ |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_X509) && |
| !OPENSSL_port_strcmp(name, PEM_STRING_X509_TRUSTED)) |
| return 1; |
| |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_X509_OLD) && |
| !OPENSSL_port_strcmp(name, PEM_STRING_X509_TRUSTED)) |
| return 1; |
| |
| /* Some CAs use PKCS#7 with CERTIFICATE headers */ |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_X509) && !OPENSSL_port_strcmp(name, PEM_STRING_PKCS7)) |
| return 1; |
| |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_PKCS7_SIGNED) && |
| !OPENSSL_port_strcmp(name, PEM_STRING_PKCS7)) |
| return 1; |
| |
| #ifndef OPENSSL_NO_CMS |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_X509) && !OPENSSL_port_strcmp(name, PEM_STRING_CMS)) |
| return 1; |
| /* Allow CMS to be read from PKCS#7 headers */ |
| if (!OPENSSL_port_strcmp(nm, PEM_STRING_PKCS7) && !OPENSSL_port_strcmp(name, PEM_STRING_CMS)) |
| return 1; |
| #endif |
| |
| return 0; |
| } |
| |
| int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, |
| const char *name, BIO *bp, pem_password_cb *cb, |
| void *u) |
| { |
| EVP_CIPHER_INFO cipher; |
| char *nm = NULL, *header = NULL; |
| unsigned char *data = NULL; |
| long len; |
| int ret = 0; |
| |
| for (;;) { |
| if (!PEM_read_bio(bp, &nm, &header, &data, &len)) { |
| if (ERR_GET_REASON(ERR_peek_error()) == PEM_R_NO_START_LINE) |
| ERR_add_error_data(2, "Expecting: ", name); |
| return 0; |
| } |
| if (check_pem(nm, name)) |
| break; |
| OPENSSL_free(nm); |
| OPENSSL_free(header); |
| OPENSSL_free(data); |
| } |
| if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) |
| goto err; |
| if (!PEM_do_header(&cipher, data, &len, cb, u)) |
| goto err; |
| |
| *pdata = data; |
| *plen = len; |
| |
| if (pnm) |
| *pnm = nm; |
| |
| ret = 1; |
| |
| err: |
| if (!ret || !pnm) |
| OPENSSL_free(nm); |
| OPENSSL_free(header); |
| if (!ret) |
| OPENSSL_free(data); |
| return ret; |
| } |
| |
| #ifndef OPENSSL_NO_FP_API |
| int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp, |
| void *x, const EVP_CIPHER *enc, unsigned char *kstr, |
| int klen, pem_password_cb *callback, void *u) |
| { |
| BIO *b; |
| int ret; |
| |
| if ((b = BIO_new(BIO_s_file())) == NULL) { |
| PEMerr(PEM_F_PEM_ASN1_WRITE, ERR_R_BUF_LIB); |
| return (0); |
| } |
| BIO_set_fp(b, fp, BIO_NOCLOSE); |
| ret = PEM_ASN1_write_bio(i2d, name, b, x, enc, kstr, klen, callback, u); |
| BIO_free(b); |
| return (ret); |
| } |
| #endif |
| |
| int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp, |
| void *x, const EVP_CIPHER *enc, unsigned char *kstr, |
| int klen, pem_password_cb *callback, void *u) |
| { |
| EVP_CIPHER_CTX ctx; |
| int dsize = 0, i, j, ret = 0; |
| unsigned char *p, *data = NULL; |
| const char *objstr = NULL; |
| char buf[PEM_BUFSIZE]; |
| unsigned char key[EVP_MAX_KEY_LENGTH]; |
| unsigned char iv[EVP_MAX_IV_LENGTH]; |
| |
| if (enc != NULL) { |
| objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); |
| if (objstr == NULL) { |
| PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER); |
| goto err; |
| } |
| } |
| |
| if ((dsize = i2d(x, NULL)) < 0) { |
| PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, ERR_R_ASN1_LIB); |
| dsize = 0; |
| goto err; |
| } |
| /* dzise + 8 bytes are needed */ |
| /* actually it needs the cipher block size extra... */ |
| data = (unsigned char *)OPENSSL_malloc((unsigned int)dsize + 20); |
| if (data == NULL) { |
| PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| p = data; |
| i = i2d(x, &p); |
| |
| if (enc != NULL) { |
| if (kstr == NULL) { |
| if (callback == NULL) |
| klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u); |
| else |
| klen = (*callback) (buf, PEM_BUFSIZE, 1, u); |
| if (klen <= 0) { |
| PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, PEM_R_READ_KEY); |
| goto err; |
| } |
| #ifdef CHARSET_EBCDIC |
| /* Convert the pass phrase from EBCDIC */ |
| ebcdic2ascii(buf, buf, klen); |
| #endif |
| kstr = (unsigned char *)buf; |
| } |
| RAND_add(data, i, 0); /* put in the RSA key. */ |
| OPENSSL_assert(enc->iv_len <= (int)sizeof(iv)); |
| if (RAND_pseudo_bytes(iv, enc->iv_len) < 0) /* Generate a salt */ |
| goto err; |
| /* |
| * The 'iv' is used as the iv and as a salt. It is NOT taken from |
| * the BytesToKey function |
| */ |
| if (!EVP_BytesToKey(enc, EVP_md5(), iv, kstr, klen, 1, key, NULL)) |
| goto err; |
| |
| if (kstr == (unsigned char *)buf) |
| OPENSSL_cleanse(buf, PEM_BUFSIZE); |
| |
| OPENSSL_assert(OPENSSL_port_strlen(objstr) + 23 + 2 * enc->iv_len + 13 <= |
| sizeof buf); |
| |
| buf[0] = '\0'; |
| PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); |
| PEM_dek_info(buf, objstr, enc->iv_len, (char *)iv); |
| /* k=OPENSSL_port_strlen(buf); */ |
| |
| EVP_CIPHER_CTX_init(&ctx); |
| ret = 1; |
| if (!EVP_EncryptInit_ex(&ctx, enc, NULL, key, iv) |
| || !EVP_EncryptUpdate(&ctx, data, &j, data, i) |
| || !EVP_EncryptFinal_ex(&ctx, &(data[j]), &i)) |
| ret = 0; |
| EVP_CIPHER_CTX_cleanup(&ctx); |
| if (ret == 0) |
| goto err; |
| i += j; |
| } else { |
| ret = 1; |
| buf[0] = '\0'; |
| } |
| i = PEM_write_bio(bp, name, buf, data, i); |
| if (i <= 0) |
| ret = 0; |
| err: |
| OPENSSL_cleanse(key, sizeof(key)); |
| OPENSSL_cleanse(iv, sizeof(iv)); |
| OPENSSL_cleanse((char *)&ctx, sizeof(ctx)); |
| OPENSSL_cleanse(buf, PEM_BUFSIZE); |
| if (data != NULL) { |
| OPENSSL_cleanse(data, (unsigned int)dsize); |
| OPENSSL_free(data); |
| } |
| return (ret); |
| } |
| |
| int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen, |
| pem_password_cb *callback, void *u) |
| { |
| int i = 0, j, o, klen; |
| long len; |
| EVP_CIPHER_CTX ctx; |
| unsigned char key[EVP_MAX_KEY_LENGTH]; |
| char buf[PEM_BUFSIZE]; |
| |
| len = *plen; |
| |
| if (cipher->cipher == NULL) |
| return (1); |
| if (callback == NULL) |
| klen = PEM_def_callback(buf, PEM_BUFSIZE, 0, u); |
| else |
| klen = callback(buf, PEM_BUFSIZE, 0, u); |
| if (klen <= 0) { |
| PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_PASSWORD_READ); |
| return (0); |
| } |
| #ifdef CHARSET_EBCDIC |
| /* Convert the pass phrase from EBCDIC */ |
| ebcdic2ascii(buf, buf, klen); |
| #endif |
| |
| if (!EVP_BytesToKey(cipher->cipher, EVP_md5(), &(cipher->iv[0]), |
| (unsigned char *)buf, klen, 1, key, NULL)) |
| return 0; |
| |
| j = (int)len; |
| EVP_CIPHER_CTX_init(&ctx); |
| o = EVP_DecryptInit_ex(&ctx, cipher->cipher, NULL, key, &(cipher->iv[0])); |
| if (o) |
| o = EVP_DecryptUpdate(&ctx, data, &i, data, j); |
| if (o) |
| o = EVP_DecryptFinal_ex(&ctx, &(data[i]), &j); |
| EVP_CIPHER_CTX_cleanup(&ctx); |
| OPENSSL_cleanse((char *)buf, sizeof(buf)); |
| OPENSSL_cleanse((char *)key, sizeof(key)); |
| j += i; |
| if (!o) { |
| PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_DECRYPT); |
| return (0); |
| } |
| *plen = j; |
| return (1); |
| } |
| |
| int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher) |
| { |
| const EVP_CIPHER *enc = NULL; |
| char *p, c; |
| char **header_pp = &header; |
| |
| cipher->cipher = NULL; |
| if ((header == NULL) || (*header == '\0') || (*header == '\n')) |
| return (1); |
| if (OPENSSL_port_strncmp(header, "Proc-Type: ", 11) != 0) { |
| PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_PROC_TYPE); |
| return (0); |
| } |
| header += 11; |
| if (*header != '4') |
| return (0); |
| header++; |
| if (*header != ',') |
| return (0); |
| header++; |
| if (OPENSSL_port_strncmp(header, "ENCRYPTED", 9) != 0) { |
| PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_ENCRYPTED); |
| return (0); |
| } |
| for (; (*header != '\n') && (*header != '\0'); header++) ; |
| if (*header == '\0') { |
| PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_SHORT_HEADER); |
| return (0); |
| } |
| header++; |
| if (OPENSSL_port_strncmp(header, "DEK-Info: ", 10) != 0) { |
| PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_DEK_INFO); |
| return (0); |
| } |
| header += 10; |
| |
| p = header; |
| for (;;) { |
| c = *header; |
| #ifndef CHARSET_EBCDIC |
| if (!(((c >= 'A') && (c <= 'Z')) || (c == '-') || |
| ((c >= '0') && (c <= '9')))) |
| break; |
| #else |
| if (!(OPENSSL_port_isupper(c) || (c == '-') || OPENSSL_port_isdigit(c))) |
| break; |
| #endif |
| header++; |
| } |
| *header = '\0'; |
| cipher->cipher = enc = EVP_get_cipherbyname(p); |
| *header = c; |
| header++; |
| |
| if (enc == NULL) { |
| PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_UNSUPPORTED_ENCRYPTION); |
| return (0); |
| } |
| if (!load_iv(header_pp, &(cipher->iv[0]), enc->iv_len)) |
| return (0); |
| |
| return (1); |
| } |
| |
| static int load_iv(char **fromp, unsigned char *to, int num) |
| { |
| int v, i; |
| char *from; |
| |
| from = *fromp; |
| for (i = 0; i < num; i++) |
| to[i] = 0; |
| num *= 2; |
| for (i = 0; i < num; i++) { |
| if ((*from >= '0') && (*from <= '9')) |
| v = *from - '0'; |
| else if ((*from >= 'A') && (*from <= 'F')) |
| v = *from - 'A' + 10; |
| else if ((*from >= 'a') && (*from <= 'f')) |
| v = *from - 'a' + 10; |
| else { |
| PEMerr(PEM_F_LOAD_IV, PEM_R_BAD_IV_CHARS); |
| return (0); |
| } |
| from++; |
| to[i / 2] |= v << (long)((!(i & 1)) * 4); |
| } |
| |
| *fromp = from; |
| return (1); |
| } |
| |
| #ifndef OPENSSL_NO_FP_API |
| int PEM_write(FILE *fp, char *name, char *header, unsigned char *data, |
| long len) |
| { |
| BIO *b; |
| int ret; |
| |
| if ((b = BIO_new(BIO_s_file())) == NULL) { |
| PEMerr(PEM_F_PEM_WRITE, ERR_R_BUF_LIB); |
| return (0); |
| } |
| BIO_set_fp(b, fp, BIO_NOCLOSE); |
| ret = PEM_write_bio(b, name, header, data, len); |
| BIO_free(b); |
| return (ret); |
| } |
| #endif |
| |
| int PEM_write_bio(BIO *bp, const char *name, char *header, |
| unsigned char *data, long len) |
| { |
| int nlen, n, i, j, outl; |
| unsigned char *buf = NULL; |
| EVP_ENCODE_CTX ctx; |
| int reason = ERR_R_BUF_LIB; |
| |
| EVP_EncodeInit(&ctx); |
| nlen = OPENSSL_port_strlen(name); |
| |
| if ((BIO_write(bp, "-----BEGIN ", 11) != 11) || |
| (BIO_write(bp, name, nlen) != nlen) || |
| (BIO_write(bp, "-----\n", 6) != 6)) |
| goto err; |
| |
| i = OPENSSL_port_strlen(header); |
| if (i > 0) { |
| if ((BIO_write(bp, header, i) != i) || (BIO_write(bp, "\n", 1) != 1)) |
| goto err; |
| } |
| |
| buf = OPENSSL_malloc(PEM_BUFSIZE * 8); |
| if (buf == NULL) { |
| reason = ERR_R_MALLOC_FAILURE; |
| goto err; |
| } |
| |
| i = j = 0; |
| while (len > 0) { |
| n = (int)((len > (PEM_BUFSIZE * 5)) ? (PEM_BUFSIZE * 5) : len); |
| EVP_EncodeUpdate(&ctx, buf, &outl, &(data[j]), n); |
| if ((outl) && (BIO_write(bp, (char *)buf, outl) != outl)) |
| goto err; |
| i += outl; |
| len -= n; |
| j += n; |
| } |
| EVP_EncodeFinal(&ctx, buf, &outl); |
| if ((outl > 0) && (BIO_write(bp, (char *)buf, outl) != outl)) |
| goto err; |
| OPENSSL_cleanse(buf, PEM_BUFSIZE * 8); |
| OPENSSL_free(buf); |
| buf = NULL; |
| if ((BIO_write(bp, "-----END ", 9) != 9) || |
| (BIO_write(bp, name, nlen) != nlen) || |
| (BIO_write(bp, "-----\n", 6) != 6)) |
| goto err; |
| return (i + outl); |
| err: |
| if (buf) { |
| OPENSSL_cleanse(buf, PEM_BUFSIZE * 8); |
| OPENSSL_free(buf); |
| } |
| PEMerr(PEM_F_PEM_WRITE_BIO, reason); |
| return (0); |
| } |
| |
| #ifndef OPENSSL_NO_FP_API |
| int PEM_read(FILE *fp, char **name, char **header, unsigned char **data, |
| long *len) |
| { |
| BIO *b; |
| int ret; |
| |
| if ((b = BIO_new(BIO_s_file())) == NULL) { |
| PEMerr(PEM_F_PEM_READ, ERR_R_BUF_LIB); |
| return (0); |
| } |
| BIO_set_fp(b, fp, BIO_NOCLOSE); |
| ret = PEM_read_bio(b, name, header, data, len); |
| BIO_free(b); |
| return (ret); |
| } |
| #endif |
| |
| int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data, |
| long *len) |
| { |
| EVP_ENCODE_CTX ctx; |
| int end = 0, i, k, bl = 0, hl = 0, nohead = 0; |
| char buf[256]; |
| BUF_MEM *nameB; |
| BUF_MEM *headerB; |
| BUF_MEM *dataB, *tmpB; |
| |
| nameB = BUF_MEM_new(); |
| headerB = BUF_MEM_new(); |
| dataB = BUF_MEM_new(); |
| if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) { |
| BUF_MEM_free(nameB); |
| BUF_MEM_free(headerB); |
| BUF_MEM_free(dataB); |
| PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE); |
| return (0); |
| } |
| |
| buf[254] = '\0'; |
| for (;;) { |
| i = BIO_gets(bp, buf, 254); |
| |
| if (i <= 0) { |
| PEMerr(PEM_F_PEM_READ_BIO, PEM_R_NO_START_LINE); |
| goto err; |
| } |
| |
| while ((i >= 0) && (buf[i] <= ' ')) |
| i--; |
| buf[++i] = '\n'; |
| buf[++i] = '\0'; |
| |
| if (OPENSSL_port_strncmp(buf, "-----BEGIN ", 11) == 0) { |
| i = OPENSSL_port_strlen(&(buf[11])); |
| |
| if (OPENSSL_port_strncmp(&(buf[11 + i - 6]), "-----\n", 6) != 0) |
| continue; |
| if (!BUF_MEM_grow(nameB, i + 9)) { |
| PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| OPENSSL_port_memcpy(nameB->data, &(buf[11]), i - 6); |
| nameB->data[i - 6] = '\0'; |
| break; |
| } |
| } |
| hl = 0; |
| if (!BUF_MEM_grow(headerB, 256)) { |
| PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| headerB->data[0] = '\0'; |
| for (;;) { |
| i = BIO_gets(bp, buf, 254); |
| if (i <= 0) |
| break; |
| |
| while ((i >= 0) && (buf[i] <= ' ')) |
| i--; |
| buf[++i] = '\n'; |
| buf[++i] = '\0'; |
| |
| if (buf[0] == '\n') |
| break; |
| if (!BUF_MEM_grow(headerB, hl + i + 9)) { |
| PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| if (OPENSSL_port_strncmp(buf, "-----END ", 9) == 0) { |
| nohead = 1; |
| break; |
| } |
| OPENSSL_port_memcpy(&(headerB->data[hl]), buf, i); |
| headerB->data[hl + i] = '\0'; |
| hl += i; |
| } |
| |
| bl = 0; |
| if (!BUF_MEM_grow(dataB, 1024)) { |
| PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| dataB->data[0] = '\0'; |
| if (!nohead) { |
| for (;;) { |
| i = BIO_gets(bp, buf, 254); |
| if (i <= 0) |
| break; |
| |
| while ((i >= 0) && (buf[i] <= ' ')) |
| i--; |
| buf[++i] = '\n'; |
| buf[++i] = '\0'; |
| |
| if (i != 65) |
| end = 1; |
| if (OPENSSL_port_strncmp(buf, "-----END ", 9) == 0) |
| break; |
| if (i > 65) |
| break; |
| if (!BUF_MEM_grow_clean(dataB, i + bl + 9)) { |
| PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| OPENSSL_port_memcpy(&(dataB->data[bl]), buf, i); |
| dataB->data[bl + i] = '\0'; |
| bl += i; |
| if (end) { |
| buf[0] = '\0'; |
| i = BIO_gets(bp, buf, 254); |
| if (i <= 0) |
| break; |
| |
| while ((i >= 0) && (buf[i] <= ' ')) |
| i--; |
| buf[++i] = '\n'; |
| buf[++i] = '\0'; |
| |
| break; |
| } |
| } |
| } else { |
| tmpB = headerB; |
| headerB = dataB; |
| dataB = tmpB; |
| bl = hl; |
| } |
| i = OPENSSL_port_strlen(nameB->data); |
| if ((OPENSSL_port_strncmp(buf, "-----END ", 9) != 0) || |
| (OPENSSL_port_strncmp(nameB->data, &(buf[9]), i) != 0) || |
| (OPENSSL_port_strncmp(&(buf[9 + i]), "-----\n", 6) != 0)) { |
| PEMerr(PEM_F_PEM_READ_BIO, PEM_R_BAD_END_LINE); |
| goto err; |
| } |
| |
| EVP_DecodeInit(&ctx); |
| i = EVP_DecodeUpdate(&ctx, |
| (unsigned char *)dataB->data, &bl, |
| (unsigned char *)dataB->data, bl); |
| if (i < 0) { |
| PEMerr(PEM_F_PEM_READ_BIO, PEM_R_BAD_BASE64_DECODE); |
| goto err; |
| } |
| i = EVP_DecodeFinal(&ctx, (unsigned char *)&(dataB->data[bl]), &k); |
| if (i < 0) { |
| PEMerr(PEM_F_PEM_READ_BIO, PEM_R_BAD_BASE64_DECODE); |
| goto err; |
| } |
| bl += k; |
| |
| if (bl == 0) |
| goto err; |
| *name = nameB->data; |
| *header = headerB->data; |
| *data = (unsigned char *)dataB->data; |
| *len = bl; |
| OPENSSL_free(nameB); |
| OPENSSL_free(headerB); |
| OPENSSL_free(dataB); |
| return (1); |
| err: |
| BUF_MEM_free(nameB); |
| BUF_MEM_free(headerB); |
| BUF_MEM_free(dataB); |
| return (0); |
| } |
| |
| /* |
| * Check pem string and return prefix length. If for example the pem_str == |
| * "RSA PRIVATE KEY" and suffix = "PRIVATE KEY" the return value is 3 for the |
| * string "RSA". |
| */ |
| |
| int pem_check_suffix(const char *pem_str, const char *suffix) |
| { |
| int pem_len = OPENSSL_port_strlen(pem_str); |
| int suffix_len = OPENSSL_port_strlen(suffix); |
| const char *p; |
| if (suffix_len + 1 >= pem_len) |
| return 0; |
| p = pem_str + pem_len - suffix_len; |
| if (OPENSSL_port_strcmp(p, suffix)) |
| return 0; |
| p--; |
| if (*p != ' ') |
| return 0; |
| return p - pem_str; |
| } |
