2 * uxstore.c: Unix-specific implementation of the interface defined
12 #include <sys/types.h>
18 * For the moment, the only existing Unix utility is pterm and that
19 * has no GUI configuration at all, so our write routines need do
20 * nothing. Eventually I suppose these will read and write an rc
21 * file somewhere or other.
24 void *open_settings_w(char *sessionname
)
29 void write_setting_s(void *handle
, char *key
, char *value
)
33 void write_setting_i(void *handle
, char *key
, int value
)
37 void close_settings_w(void *handle
)
42 * Reading settings, for the moment, is done by retrieving X
43 * resources from the X display. When we introduce disk files, I
44 * think what will happen is that the X resources will override
45 * PuTTY's inbuilt defaults, but that the disk files will then
46 * override those. This isn't optimal, but it's the best I can
47 * immediately work out.
55 static tree234
*xrmtree
= NULL
;
57 int xrmcmp(void *av
, void *bv
)
59 struct xrm_string
*a
= (struct xrm_string
*)av
;
60 struct xrm_string
*b
= (struct xrm_string
*)bv
;
61 return strcmp(a
->key
, b
->key
);
64 void provide_xrm_string(char *string
)
67 struct xrm_string
*xrms
, *ret
;
69 p
= q
= strchr(string
, ':');
71 fprintf(stderr
, "pterm: expected a colon in resource string"
76 while (p
> string
&& p
[-1] != '.' && p
[-1] != '*')
78 xrms
= smalloc(sizeof(struct xrm_string
));
79 xrms
->key
= smalloc(q
-p
);
80 memcpy(xrms
->key
, p
, q
-p
);
81 xrms
->key
[q
-p
-1] = '\0';
82 while (*q
&& isspace(*q
))
84 xrms
->value
= dupstr(q
);
87 xrmtree
= newtree234(xrmcmp
);
89 ret
= add234(xrmtree
, xrms
);
91 /* Override an existing string. */
93 add234(xrmtree
, xrms
);
97 char *get_setting(char *key
)
99 struct xrm_string tmp
, *ret
;
102 ret
= find234(xrmtree
, &tmp
, NULL
);
106 return x_get_default(key
);
109 void *open_settings_r(char *sessionname
)
111 static int thing_to_return_an_arbitrary_non_null_pointer_to
;
112 return &thing_to_return_an_arbitrary_non_null_pointer_to
;
115 char *read_setting_s(void *handle
, char *key
, char *buffer
, int buflen
)
117 char *val
= get_setting(key
);
121 strncpy(buffer
, val
, buflen
);
122 buffer
[buflen
-1] = '\0';
127 int read_setting_i(void *handle
, char *key
, int defvalue
)
129 char *val
= get_setting(key
);
136 void close_settings_r(void *handle
)
140 void del_settings(char *sessionname
)
144 void *enum_settings_start(void)
149 char *enum_settings_next(void *handle
, char *buffer
, int buflen
)
154 void enum_settings_finish(void *handle
)
159 INDEX_DIR
, INDEX_HOSTKEYS
, INDEX_RANDSEED
162 static void make_filename(char *filename
, int index
)
166 home
= getenv("HOME");
167 strncpy(filename
, home
, FILENAME_MAX
);
168 len
= strlen(filename
);
169 strncpy(filename
+ len
,
170 index
== INDEX_DIR ?
"/.putty" :
171 index
== INDEX_HOSTKEYS ?
"/.putty/sshhostkeys" :
172 index
== INDEX_RANDSEED ?
"/.putty/randomseed" :
173 "/.putty/ERROR", FILENAME_MAX
- len
);
174 filename
[FILENAME_MAX
-1] = '\0';
178 * Read an entire line of text from a file. Return a buffer
179 * malloced to be as big as necessary (caller must free).
181 static char *fgetline(FILE *fp
)
183 char *ret
= smalloc(512);
184 int size
= 512, len
= 0;
185 while (fgets(ret
+ len
, size
- len
, fp
)) {
186 len
+= strlen(ret
+ len
);
187 if (ret
[len
-1] == '\n')
188 break; /* got a newline, we're done */
190 ret
= srealloc(ret
, size
);
192 if (len
== 0) { /* first fgets returned NULL */
201 * Lines in the host keys file are of the form
203 * type@port:hostname keydata
207 * rsa@22:foovax.example.org 0x23,0x293487364395345345....2343
209 int verify_host_key(char *hostname
, int port
, char *keytype
, char *key
)
212 char filename
[FILENAME_MAX
];
216 make_filename(filename
, INDEX_HOSTKEYS
);
217 fp
= fopen(filename
, "r");
219 return 1; /* key does not exist */
222 while ( (line
= fgetline(fp
)) ) {
227 line
[strcspn(line
, "\n")] = '\0'; /* strip trailing newline */
230 if (strncmp(p
, keytype
, i
))
238 sprintf(porttext
, "%d", port
);
239 i
= strlen(porttext
);
240 if (strncmp(p
, porttext
, i
))
248 i
= strlen(hostname
);
249 if (strncmp(p
, hostname
, i
))
258 * Found the key. Now just work out whether it's the right
262 ret
= 0; /* key matched OK */
264 ret
= 2; /* key mismatch */
275 void store_host_key(char *hostname
, int port
, char *keytype
, char *key
)
279 char filename
[FILENAME_MAX
];
281 make_filename(filename
, INDEX_HOSTKEYS
);
282 fd
= open(filename
, O_CREAT
| O_APPEND
| O_RDWR
, 0600);
284 char dir
[FILENAME_MAX
];
286 make_filename(dir
, INDEX_DIR
);
288 fd
= open(filename
, O_CREAT
| O_APPEND
| O_RDWR
, 0600);
294 fp
= fdopen(fd
, "a");
295 fprintf(fp
, "%s@%d:%s %s\n", keytype
, port
, hostname
, key
);
299 void read_random_seed(noise_consumer_t consumer
)
302 char fname
[FILENAME_MAX
];
304 make_filename(fname
, INDEX_RANDSEED
);
305 fd
= open(fname
, O_RDONLY
);
309 while ( (ret
= read(fd
, buf
, sizeof(buf
))) > 0)
315 void write_random_seed(void *data
, int len
)
318 char fname
[FILENAME_MAX
];
320 make_filename(fname
, INDEX_RANDSEED
);
322 * Don't truncate the random seed file if it already exists; if
323 * something goes wrong half way through writing it, it would
324 * be better to leave the old data there than to leave it empty.
326 fd
= open(fname
, O_CREAT
| O_WRONLY
, 0600);
328 char dir
[FILENAME_MAX
];
330 make_filename(dir
, INDEX_DIR
);
332 fd
= open(fname
, O_CREAT
| O_WRONLY
, 0600);
336 int ret
= write(fd
, data
, len
);
339 data
= (char *)data
+ len
;
345 void cleanup_all(void)