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add -x (encrypt) option; implement cprotect (from MIT); make sure we

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CCC if switching to clear-text command channel


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16162 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
2005-10-12 09:46:42 +00:00
parent 8e29e3cb6f
commit bc8df2efca
1 changed files with 66 additions and 5 deletions
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69
appl/ftp/ftp/security.c
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@@ -663,7 +663,15 @@ sec_prot_internal(int level)
enum protection_level
set_command_prot(enum protection_level level)
{
int ret;
enum protection_level old = command_prot;
if(level != command_prot && level == prot_clear) {
ret = command("CCC");
if(ret != COMPLETE) {
printf("Failed to clear command channel.\n");
return -1;
}
}
command_prot = level;
return old;
}
@@ -673,8 +681,13 @@ sec_prot(int argc, char **argv)
{
int level = -1;
if(argc < 2 || argc > 3)
if(argc > 3)
goto usage;
if(argc == 1) {
sec_status();
return;
}
if(!sec_complete) {
printf("No security data exchange has taken place.\n");
code = -1;
@@ -697,9 +710,12 @@ sec_prot(int argc, char **argv)
code = -1;
return;
}
} else if(strncasecmp(argv[1], "command", strlen(argv[1])) == 0)
set_command_prot(level);
else
} else if(strncasecmp(argv[1], "command", strlen(argv[1])) == 0) {
if(set_command_prot(level) < 0) {
code = -1;
return;
}
} else
goto usage;
code = 0;
return;
@@ -709,6 +725,46 @@ sec_prot(int argc, char **argv)
code = -1;
}
void
sec_prot_command(int argc, char **argv)
{
int level;
if(argc > 2)
goto usage;
if(!sec_complete) {
printf("No security data exchange has taken place.\n");
code = -1;
return;
}
if(argc == 1) {
sec_status();
} else {
level = name_to_level(argv[1]);
if(level == -1)
goto usage;
if((*mech->check_prot)(app_data, level)) {
printf("%s does not implement %s protection.\n",
mech->name, level_to_name(level));
code = -1;
return;
}
if(set_command_prot(level) < 0) {
code = -1;
return;
}
}
code = 0;
return;
usage:
printf("usage: %s [clear|safe|confidential|private]\n",
argv[0]);
code = -1;
}
static enum protection_level request_data_prot;
void
@@ -780,7 +836,12 @@ sec_login(char *host)
}
mech = *m;
sec_complete = 1;
if(doencrypt) {
command_prot = prot_private;
request_data_prot = prot_private;
} else {
command_prot = prot_safe;
}
break;
}