--- /dev/null
+/* 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 (;;)
+ {
+ 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);
+ memset(buf,0,(unsigned int)num);
+ return(-1);
+ }
+ j=strlen(buf);
+ if (j < MIN_LENGTH)
+ {
+ fprintf(stderr,"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=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;
+ }
+
+ /* 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)
+ {
+ 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(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,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 (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(c) || (c == '-') ||
+ 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=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;
+ }
+
projects / cassiopeia.git / blobdiff