diff options
Diffstat (limited to 'openssl/crypto/pem/pem_lib.c')
| -rw-r--r-- | openssl/crypto/pem/pem_lib.c | 852 |
1 files changed, 852 insertions, 0 deletions
diff --git a/openssl/crypto/pem/pem_lib.c b/openssl/crypto/pem/pem_lib.c new file mode 100644 index 00000000..cfc89a99 --- /dev/null +++ b/openssl/crypto/pem/pem_lib.c @@ -0,0 +1,852 @@ +/* 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 */ + EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL); + + 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); + EVP_EncryptInit_ex(&ctx,enc,NULL,key,iv); + EVP_EncryptUpdate(&ctx,data,&j,data,i); + EVP_EncryptFinal_ex(&ctx,&(data[j]),&i); + EVP_CIPHER_CTX_cleanup(&ctx); + i+=j; + ret=1; + } + 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 + + EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]), + (unsigned char *)buf,klen,1,key,NULL); + + j=(int)len; + EVP_CIPHER_CTX_init(&ctx); + EVP_DecryptInit_ex(&ctx,cipher->cipher,NULL, key,&(cipher->iv[0])); + EVP_DecryptUpdate(&ctx,data,&i,data,j); + 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; + } + |