diff options
Diffstat (limited to 'thirdparty/openssl/crypto/pem/pem_lib.c')
| -rw-r--r-- | thirdparty/openssl/crypto/pem/pem_lib.c | 872 |
1 files changed, 0 insertions, 872 deletions
diff --git a/thirdparty/openssl/crypto/pem/pem_lib.c b/thirdparty/openssl/crypto/pem/pem_lib.c deleted file mode 100644 index 865976bf8c..0000000000 --- a/thirdparty/openssl/crypto/pem/pem_lib.c +++ /dev/null @@ -1,872 +0,0 @@ -/* 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 <stdio.h> -#include <ctype.h> -#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); -#else - int i, j; - const char *prompt; - if (key) { - i = strlen(key); - i = (i > num) ? num : i; - memcpy(buf, key, i); - return (i); - } - - prompt = EVP_get_pw_prompt(); - if (prompt == NULL) - prompt = "Enter PEM pass phrase:"; - - for (;;) { - /* - * We assume that w == 0 means decryption, - * while w == 1 means encryption - */ - int min_len = w ? MIN_LENGTH : 0; - - i = EVP_read_pw_string_min(buf, min_len, num, prompt, w); - if (i != 0) { - PEMerr(PEM_F_PEM_DEF_CALLBACK, PEM_R_PROBLEMS_GETTING_PASSWORD); - memset(buf, 0, (unsigned int)num); - return (-1); - } - j = strlen(buf); - if (min_len && j < min_len) { - fprintf(stderr, - "phrase is too short, needs to be at least %d chars\n", - min_len); - } 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 = 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 (!strcmp(nm, name)) - return 1; - - /* Make PEM_STRING_EVP_PKEY match any private key */ - - if (!strcmp(name, PEM_STRING_EVP_PKEY)) { - int slen; - const EVP_PKEY_ASN1_METHOD *ameth; - if (!strcmp(nm, PEM_STRING_PKCS8)) - return 1; - if (!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 (!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; - } - /* If reading DH parameters handle X9.42 DH format too */ - if (!strcmp(nm, PEM_STRING_DHXPARAMS) && - !strcmp(name, PEM_STRING_DHPARAMS)) - return 1; - - /* Permit older strings */ - - if (!strcmp(nm, PEM_STRING_X509_OLD) && !strcmp(name, PEM_STRING_X509)) - return 1; - - if (!strcmp(nm, PEM_STRING_X509_REQ_OLD) && - !strcmp(name, PEM_STRING_X509_REQ)) - return 1; - - /* Allow normal certs to be read as trusted certs */ - if (!strcmp(nm, PEM_STRING_X509) && - !strcmp(name, PEM_STRING_X509_TRUSTED)) - return 1; - - if (!strcmp(nm, PEM_STRING_X509_OLD) && - !strcmp(name, PEM_STRING_X509_TRUSTED)) - return 1; - - /* Some CAs use PKCS#7 with CERTIFICATE headers */ - if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_PKCS7)) - return 1; - - if (!strcmp(nm, PEM_STRING_PKCS7_SIGNED) && - !strcmp(name, PEM_STRING_PKCS7)) - return 1; - -#ifndef OPENSSL_NO_CMS - if (!strcmp(nm, PEM_STRING_X509) && !strcmp(name, PEM_STRING_CMS)) - return 1; - /* Allow CMS to be read from PKCS#7 headers */ - if (!strcmp(nm, PEM_STRING_PKCS7) && !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 || EVP_CIPHER_iv_length(enc) == 0) { - 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_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(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=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)); - if (o) - j += i; - else { - 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 (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 (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 (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 (!(isupper((unsigned char)c) || (c == '-') - || isdigit((unsigned char)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, const char *name, const char *header, - const 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, const char *header, - const 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 = strlen(name); - - if ((BIO_write(bp, "-----BEGIN ", 11) != 11) || - (BIO_write(bp, name, nlen) != nlen) || - (BIO_write(bp, "-----\n", 6) != 6)) - goto err; - - i = 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 (strncmp(buf, "-----BEGIN ", 11) == 0) { - i = strlen(&(buf[11])); - - if (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; - } - 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 (strncmp(buf, "-----END ", 9) == 0) { - nohead = 1; - break; - } - 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 (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; - } - 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 = strlen(nameB->data); - if ((strncmp(buf, "-----END ", 9) != 0) || - (strncmp(nameB->data, &(buf[9]), i) != 0) || - (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 = strlen(pem_str); - int suffix_len = strlen(suffix); - const char *p; - if (suffix_len + 1 >= pem_len) - return 0; - p = pem_str + pem_len - suffix_len; - if (strcmp(p, suffix)) - return 0; - p--; - if (*p != ' ') - return 0; - return p - pem_str; -} |