int PEM_def_callback(char *buf, int num, int rwflag, void *userdata)
{
int i, min_len;
const char *prompt;
/* We assume that the user passes a default password as userdata */
if (userdata) {
i = strlen(userdata);
i = (i > num) ? num : i;
memcpy(buf, userdata, i);
return i;
}
prompt = EVP_get_pw_prompt();
if (prompt == NULL)
prompt = "Enter PEM pass phrase:";
/*
* rwflag == 0 means decryption
* rwflag == 1 means encryption
*
* We assume that for encryption, we want a minimum length, while for
* decryption, we cannot know any minimum length, so we assume zero.
*/
min_len = rwflag ? MIN_LENGTH : 0;
i = EVP_read_pw_string_min(buf, min_len, num, prompt, rwflag);
if (i != 0) {
PEMerr(PEM_F_PEM_DEF_CALLBACK, PEM_R_PROBLEMS_GETTING_PASSWORD);
memset(buf, 0, (unsigned int)num);
return -1;
}
return strlen(buf);
}
int
PEM_def_callback(char *buf, int num, int w, void *key)
{
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);
}
int PEM_def_callback(char *buf, int num, int w, void *key)
{
#if defined(OPENSSL_NO_STDIO) || defined(OPENSSL_NO_UI)
int i;
#else
int i, j;
const char *prompt;
#endif
if (key) {
i = strlen(key);
i = (i > num) ? num : i;
memcpy(buf, key, i);
return i;
}
#if defined(OPENSSL_NO_STDIO) || defined(OPENSSL_NO_UI)
PEMerr(PEM_F_PEM_DEF_CALLBACK, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return -1;
#else
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
}
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
}
/* XXX LSSL ABI XXX return value and `num' ought to be size_t */
int
PEM_def_callback(char *buf, int num, int w, void *key)
{
size_t l;
int i;
const char *prompt;
if (key) {
l = strlen(key);
if (num < 0)
return -1;
if (l > (size_t)num)
l = (size_t)num;
memcpy(buf, key, l);
return (int)l;
}
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, num);
return (-1);
}
l = strlen(buf);
if (l < MIN_LENGTH) {
fprintf(stderr, "phrase is too short, "
"needs to be at least %zu chars\n",
(size_t)MIN_LENGTH);
} else
break;
}
return (int)l;
}
/*
* For historical reasons, the standard function for reading passwords is in
* the DES library -- if someone ever wants to disable DES, this function
* will fail
*/
int EVP_read_pw_string(char *buf, int len, const char *prompt, int verify)
{
return EVP_read_pw_string_min(buf, 0, len, prompt, verify);
}
