7 * Some command-line parameters need to be saved up until after
8 * we've loaded the saved session which will form the basis of our
9 * eventual running configuration. For this we use the macro
10 * SAVEABLE, which notices if the `need_save' parameter is set and
11 * saves the parameter and value on a list.
13 * We also assign priorities to saved parameters, just to slightly
14 * ameliorate silly ordering problems. For example, if you specify
15 * a saved session to load, it will be loaded _before_ all your
16 * local modifications such as -L are evaluated; and if you specify
17 * a protocol and a port, the protocol is set up first so that the
18 * port can override its choice of port number.
23 struct cmdline_saved_param
{
26 struct cmdline_saved_param_set
{
27 struct cmdline_saved_param
*params
;
32 * C guarantees this structure will be initialised to all zero at
33 * program start, which is exactly what we want.
35 static struct cmdline_saved_param_set saves
[NPRIORITIES
];
37 static void cmdline_save_param(char *p
, char *value
, int pri
)
39 if (saves
[pri
].nsaved
>= saves
[pri
].savesize
) {
40 saves
[pri
].savesize
= saves
[pri
].nsaved
+ 32;
42 srealloc(saves
[pri
].params
,
43 saves
[pri
].savesize
*sizeof(*saves
[pri
].params
));
45 saves
[pri
].params
[saves
[pri
].nsaved
].p
= p
;
46 saves
[pri
].params
[saves
[pri
].nsaved
].value
= value
;
50 #define SAVEABLE(pri) do { \
51 if (need_save) { cmdline_save_param(p, value, pri); return ret; } \
54 char *cmdline_password
= NULL
;
56 static int cmdline_get_line(const char *prompt
, char *str
,
57 int maxlen
, int is_pw
)
59 static int tried_once
= 0;
61 assert(is_pw
&& cmdline_password
);
66 strncpy(str
, cmdline_password
, maxlen
);
67 str
[maxlen
- 1] = '\0';
74 * Here we have a flags word which describes the capabilities of
75 * the particular tool on whose behalf we're running. We will
76 * refuse certain command-line options if a particular tool
77 * inherently can't do anything sensible. For example, the file
78 * transfer tools (psftp, pscp) can't do a great deal with protocol
79 * selections (ever tried running scp over telnet?) or with port
80 * forwarding (even if it wasn't a hideously bad idea, they don't
81 * have the select() infrastructure to make them work).
83 int cmdline_tooltype
= 0;
85 static int cmdline_check_unavailable(int flag
, char *p
)
87 if (cmdline_tooltype
& flag
) {
88 cmdline_error("option \"%s\" not available in this tool", p
);
94 #define UNAVAILABLE_IN(flag) do { \
95 if (cmdline_check_unavailable(flag, p)) return ret; \
99 * Process a standard command-line parameter. `p' is the parameter
100 * in question; `value' is the subsequent element of argv, which
101 * may or may not be required as an operand to the parameter.
102 * Return value is 2 if both arguments were used; 1 if only p was
103 * used; 0 if the parameter wasn't one we recognised; -2 if it
104 * should have been 2 but value was NULL.
107 #define RETURN(x) do { \
108 if ((x) == 2 && !value) return -2; \
112 int cmdline_process_param(char *p
, char *value
, int need_save
, Config
*cfg
)
116 if (!strcmp(p
, "-load")) {
118 SAVEABLE(0); /* very high priority */
119 do_defaults(value
, cfg
);
122 if (!strcmp(p
, "-ssh")) {
124 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
126 default_protocol
= cfg
->protocol
= PROT_SSH
;
127 default_port
= cfg
->port
= 22;
130 if (!strcmp(p
, "-telnet")) {
132 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
134 default_protocol
= cfg
->protocol
= PROT_TELNET
;
135 default_port
= cfg
->port
= 23;
138 if (!strcmp(p
, "-rlogin")) {
140 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
142 default_protocol
= cfg
->protocol
= PROT_RLOGIN
;
143 default_port
= cfg
->port
= 513;
146 if (!strcmp(p
, "-raw")) {
148 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
150 default_protocol
= cfg
->protocol
= PROT_RAW
;
152 if (!strcmp(p
, "-v")) {
154 flags
|= FLAG_VERBOSE
;
156 if (!strcmp(p
, "-l")) {
159 strncpy(cfg
->username
, value
, sizeof(cfg
->username
));
160 cfg
->username
[sizeof(cfg
->username
) - 1] = '\0';
162 if ((!strcmp(p
, "-L") || !strcmp(p
, "-R"))) {
163 char *fwd
, *ptr
, *q
, *qq
;
166 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
170 /* if multiple forwards, find end of list */
171 if (ptr
[0]=='R' || ptr
[0]=='L') {
172 for (i
= 0; i
< sizeof(cfg
->portfwd
) - 2; i
++)
173 if (ptr
[i
]=='\000' && ptr
[i
+1]=='\000')
175 ptr
= ptr
+ i
+ 1; /* point to next forward slot */
177 ptr
[0] = p
[1]; /* insert a 'L' or 'R' at the start */
178 if (strlen(fwd
) > sizeof(cfg
->portfwd
) - i
- 2) {
179 cmdline_error("out of space for port forwardings");
182 strncpy(ptr
+1, fwd
, sizeof(cfg
->portfwd
) - i
);
184 * We expect _at least_ two colons in this string. The
185 * possible formats are `sourceport:desthost:destport', or
186 * `sourceip:sourceport:desthost:destport' if you're
187 * specifying a particular loopback address. We need to
188 * replace the one between source and dest with a \t; this
189 * means we must find the second-to-last colon in the
192 q
= qq
= strchr(ptr
, ':');
194 char *qqq
= strchr(qq
+1, ':');
199 if (q
) *q
= '\t'; /* replace second-last colon with \t */
200 cfg
->portfwd
[sizeof(cfg
->portfwd
) - 1] = '\0';
201 cfg
->portfwd
[sizeof(cfg
->portfwd
) - 2] = '\0';
202 ptr
[strlen(ptr
)+1] = '\000'; /* append two '\000' */
204 if (!strcmp(p
, "-m")) {
205 char *filename
, *command
;
211 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
216 cmdlen
= cmdsize
= 0;
218 fp
= fopen(filename
, "r");
220 cmdline_error("unable to open command "
221 "file \"%s\"", filename
);
229 if (cmdlen
>= cmdsize
) {
230 cmdsize
= cmdlen
+ 512;
231 command
= srealloc(command
, cmdsize
);
233 command
[cmdlen
++] = d
;
235 cfg
->remote_cmd_ptr
= command
;
236 cfg
->remote_cmd_ptr2
= NULL
;
237 cfg
->nopty
= TRUE
; /* command => no terminal */
239 if (!strcmp(p
, "-P")) {
241 SAVEABLE(2); /* lower priority than -ssh,-telnet */
242 cfg
->port
= atoi(value
);
244 if (!strcmp(p
, "-pw")) {
246 cmdline_password
= value
;
247 ssh_get_line
= cmdline_get_line
;
248 ssh_getline_pw_only
= TRUE
;
251 if (!strcmp(p
, "-A")) {
253 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
257 if (!strcmp(p
, "-a")) {
259 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
264 if (!strcmp(p
, "-X")) {
266 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
268 cfg
->x11_forward
= 1;
270 if (!strcmp(p
, "-x")) {
272 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
274 cfg
->x11_forward
= 0;
277 if (!strcmp(p
, "-t")) {
279 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
283 if (!strcmp(p
, "-T")) {
285 UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER
);
290 if (!strcmp(p
, "-C")) {
293 cfg
->compression
= 1;
296 if (!strcmp(p
, "-1")) {
299 cfg
->sshprot
= 0; /* ssh protocol 1 only */
301 if (!strcmp(p
, "-2")) {
304 cfg
->sshprot
= 3; /* ssh protocol 2 only */
307 if (!strcmp(p
, "-i")) {
310 cfg
->keyfile
= filename_from_str(value
);
313 return ret
; /* unrecognised */
316 void cmdline_run_saved(Config
*cfg
)
319 for (pri
= 0; pri
< NPRIORITIES
; pri
++)
320 for (i
= 0; i
< saves
[pri
].nsaved
; i
++)
321 cmdline_process_param(saves
[pri
].params
[i
].p
,
322 saves
[pri
].params
[i
].value
, 0, cfg
);