version 1.59, 2019/12/06 02:55:21 |
version 1.60, 2019/12/06 03:06:08 |
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#include "uidswap.h" |
#include "uidswap.h" |
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static char * |
static char * |
ssh_askpass(char *askpass, const char *msg) |
ssh_askpass(char *askpass, const char *msg, const char *env_hint) |
{ |
{ |
pid_t pid, ret; |
pid_t pid, ret; |
size_t len; |
size_t len; |
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close(p[0]); |
close(p[0]); |
if (dup2(p[1], STDOUT_FILENO) == -1) |
if (dup2(p[1], STDOUT_FILENO) == -1) |
fatal("%s: dup2: %s", __func__, strerror(errno)); |
fatal("%s: dup2: %s", __func__, strerror(errno)); |
setenv("SSH_ASKPASS_PROMPT", "confirm", 1); /* hint to UI */ |
if (env_hint != NULL) |
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setenv("SSH_ASKPASS_PROMPT", env_hint, 1); |
execlp(askpass, askpass, msg, (char *)NULL); |
execlp(askpass, askpass, msg, (char *)NULL); |
fatal("%s: exec(%s): %s", __func__, askpass, strerror(errno)); |
fatal("%s: exec(%s): %s", __func__, askpass, strerror(errno)); |
} |
} |
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return pass; |
return pass; |
} |
} |
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/* private/internal read_passphrase flags */ |
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#define RP_ASK_PERMISSION 0x8000 /* pass hint to askpass for confirm UI */ |
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/* |
/* |
* Reads a passphrase from /dev/tty with echo turned off/on. Returns the |
* Reads a passphrase from /dev/tty with echo turned off/on. Returns the |
* passphrase (allocated with xmalloc). Exits if EOF is encountered. If |
* passphrase (allocated with xmalloc). Exits if EOF is encountered. If |
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{ |
{ |
char cr = '\r', *askpass = NULL, *ret, buf[1024]; |
char cr = '\r', *askpass = NULL, *ret, buf[1024]; |
int rppflags, use_askpass = 0, ttyfd; |
int rppflags, use_askpass = 0, ttyfd; |
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const char *askpass_hint = NULL; |
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rppflags = (flags & RP_ECHO) ? RPP_ECHO_ON : RPP_ECHO_OFF; |
rppflags = (flags & RP_ECHO) ? RPP_ECHO_ON : RPP_ECHO_OFF; |
if (flags & RP_USE_ASKPASS) |
if (flags & RP_USE_ASKPASS) |
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askpass = getenv(SSH_ASKPASS_ENV); |
askpass = getenv(SSH_ASKPASS_ENV); |
else |
else |
askpass = _PATH_SSH_ASKPASS_DEFAULT; |
askpass = _PATH_SSH_ASKPASS_DEFAULT; |
if ((ret = ssh_askpass(askpass, prompt)) == NULL) |
if ((flags & RP_ASK_PERMISSION) != 0) |
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askpass_hint = "confirm"; |
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if ((ret = ssh_askpass(askpass, prompt, askpass_hint)) == NULL) |
if (!(flags & RP_ALLOW_EOF)) |
if (!(flags & RP_ALLOW_EOF)) |
return xstrdup(""); |
return xstrdup(""); |
return ret; |
return ret; |
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vsnprintf(prompt, sizeof(prompt), fmt, args); |
vsnprintf(prompt, sizeof(prompt), fmt, args); |
va_end(args); |
va_end(args); |
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p = read_passphrase(prompt, RP_USE_ASKPASS|RP_ALLOW_EOF); |
p = read_passphrase(prompt, |
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RP_USE_ASKPASS|RP_ALLOW_EOF|RP_ASK_PERMISSION); |
if (p != NULL) { |
if (p != NULL) { |
/* |
/* |
* Accept empty responses and responses consisting |
* Accept empty responses and responses consisting |