2 * uxstore.c: Unix-specific implementation of the interface defined
14 #include <sys/types.h>
20 INDEX_DIR
, INDEX_HOSTKEYS
, INDEX_RANDSEED
,
21 INDEX_SESSIONDIR
, INDEX_SESSION
,
24 static const char hex
[16] = "0123456789ABCDEF";
26 static char *mungestr(const char *in
)
31 in
= "Default Settings";
33 ret
= out
= snewn(3*strlen(in
)+1, char);
37 * There are remarkably few punctuation characters that
38 * aren't shell-special in some way or likely to be used as
39 * separators in some file format or another! Hence we use
40 * opt-in for safe characters rather than opt-out for
41 * specific unsafe ones...
43 if (*in
!='+' && *in
!='-' && *in
!='.' && *in
!='@' && *in
!='_' &&
44 !(*in
>= '0' && *in
<= '9') &&
45 !(*in
>= 'A' && *in
<= 'Z') &&
46 !(*in
>= 'a' && *in
<= 'z')) {
48 *out
++ = hex
[((unsigned char) *in
) >> 4];
49 *out
++ = hex
[((unsigned char) *in
) & 15];
58 static char *unmungestr(const char *in
)
61 out
= ret
= snewn(strlen(in
)+1, char);
63 if (*in
== '%' && in
[1] && in
[2]) {
71 *out
++ = (i
<< 4) + j
;
81 static void make_filename(char *filename
, int index
, const char *subname
)
85 home
= getenv("HOME");
86 strncpy(filename
, home
, FILENAME_MAX
);
87 len
= strlen(filename
);
88 if (index
== INDEX_SESSION
) {
89 char *munged
= mungestr(subname
);
90 char *fn
= dupprintf("/.putty/sessions/%s", munged
);
91 strncpy(filename
+ len
, fn
, FILENAME_MAX
- len
);
95 strncpy(filename
+ len
,
96 index
== INDEX_DIR ?
"/.putty" :
97 index
== INDEX_SESSIONDIR ?
"/.putty/sessions" :
98 index
== INDEX_HOSTKEYS ?
"/.putty/sshhostkeys" :
99 index
== INDEX_RANDSEED ?
"/.putty/randomseed" :
100 "/.putty/ERROR", FILENAME_MAX
- len
);
102 filename
[FILENAME_MAX
-1] = '\0';
106 * Read an entire line of text from a file. Return a buffer
107 * malloced to be as big as necessary (caller must free).
109 static char *fgetline(FILE *fp
)
111 char *ret
= snewn(512, char);
112 int size
= 512, len
= 0;
113 while (fgets(ret
+ len
, size
- len
, fp
)) {
114 len
+= strlen(ret
+ len
);
115 if (ret
[len
-1] == '\n')
116 break; /* got a newline, we're done */
118 ret
= sresize(ret
, size
, char);
120 if (len
== 0) { /* first fgets returned NULL */
129 * For the moment, the only existing Unix utility is pterm and that
130 * has no GUI configuration at all, so our write routines need do
131 * nothing. Eventually I suppose these will read and write an rc
132 * file somewhere or other.
135 void *open_settings_w(const char *sessionname
)
137 char filename
[FILENAME_MAX
];
141 * Start by making sure the sessions subdir exists. Ignore the
142 * error return from mkdir since it's perfectly likely to be
143 * `already exists', and any other error will trip us up later
144 * on so there's no real need to catch it now.
146 make_filename(filename
, INDEX_SESSIONDIR
, sessionname
);
147 mkdir(filename
, 0700);
149 make_filename(filename
, INDEX_SESSION
, sessionname
);
150 fp
= fopen(filename
, "w");
152 return NULL
; /* can't open */
156 void write_setting_s(void *handle
, const char *key
, const char *value
)
158 FILE *fp
= (FILE *)handle
;
159 fprintf(fp
, "%s=%s\n", key
, value
);
162 void write_setting_i(void *handle
, const char *key
, int value
)
164 FILE *fp
= (FILE *)handle
;
165 fprintf(fp
, "%s=%d\n", key
, value
);
168 void close_settings_w(void *handle
)
170 FILE *fp
= (FILE *)handle
;
175 * Reading settings, for the moment, is done by retrieving X
176 * resources from the X display. When we introduce disk files, I
177 * think what will happen is that the X resources will override
178 * PuTTY's inbuilt defaults, but that the disk files will then
179 * override those. This isn't optimal, but it's the best I can
180 * immediately work out.
188 static tree234
*xrmtree
= NULL
;
190 int keycmp(void *av
, void *bv
)
192 struct keyval
*a
= (struct keyval
*)av
;
193 struct keyval
*b
= (struct keyval
*)bv
;
194 return strcmp(a
->key
, b
->key
);
197 void provide_xrm_string(char *string
)
200 struct keyval
*xrms
, *ret
;
202 p
= q
= strchr(string
, ':');
204 fprintf(stderr
, "pterm: expected a colon in resource string"
205 " \"%s\"\n", string
);
209 while (p
> string
&& p
[-1] != '.' && p
[-1] != '*')
211 xrms
= snew(struct keyval
);
212 key
= snewn(q
-p
, char);
216 while (*q
&& isspace((unsigned char)*q
))
218 xrms
->value
= dupstr(q
);
221 xrmtree
= newtree234(keycmp
);
223 ret
= add234(xrmtree
, xrms
);
225 /* Override an existing string. */
226 del234(xrmtree
, ret
);
227 add234(xrmtree
, xrms
);
231 const char *get_setting(const char *key
)
233 struct keyval tmp
, *ret
;
236 ret
= find234(xrmtree
, &tmp
, NULL
);
240 return x_get_default(key
);
243 void *open_settings_r(const char *sessionname
)
245 char filename
[FILENAME_MAX
];
250 make_filename(filename
, INDEX_SESSION
, sessionname
);
251 fp
= fopen(filename
, "r");
253 return NULL
; /* can't open */
255 ret
= newtree234(keycmp
);
257 while ( (line
= fgetline(fp
)) ) {
258 char *value
= strchr(line
, '=');
264 value
[strcspn(value
, "\r\n")] = '\0'; /* trim trailing NL */
266 kv
= snew(struct keyval
);
267 kv
->key
= dupstr(line
);
268 kv
->value
= dupstr(value
);
279 char *read_setting_s(void *handle
, const char *key
, char *buffer
, int buflen
)
281 tree234
*tree
= (tree234
*)handle
;
283 struct keyval tmp
, *kv
;
287 (kv
= find234(tree
, &tmp
, NULL
)) != NULL
) {
291 val
= get_setting(key
);
296 strncpy(buffer
, val
, buflen
);
297 buffer
[buflen
-1] = '\0';
302 int read_setting_i(void *handle
, const char *key
, int defvalue
)
304 tree234
*tree
= (tree234
*)handle
;
306 struct keyval tmp
, *kv
;
310 (kv
= find234(tree
, &tmp
, NULL
)) != NULL
) {
314 val
= get_setting(key
);
322 int read_setting_fontspec(void *handle
, const char *name
, FontSpec
*result
)
324 return !!read_setting_s(handle
, name
, result
->name
, sizeof(result
->name
));
326 int read_setting_filename(void *handle
, const char *name
, Filename
*result
)
328 return !!read_setting_s(handle
, name
, result
->path
, sizeof(result
->path
));
331 void write_setting_fontspec(void *handle
, const char *name
, FontSpec result
)
333 write_setting_s(handle
, name
, result
.name
);
335 void write_setting_filename(void *handle
, const char *name
, Filename result
)
337 write_setting_s(handle
, name
, result
.path
);
340 void close_settings_r(void *handle
)
342 tree234
*tree
= (tree234
*)handle
;
348 while ( (kv
= index234(tree
, 0)) != NULL
) {
350 sfree((char *)kv
->key
);
351 sfree((char *)kv
->value
);
358 void del_settings(const char *sessionname
)
360 char filename
[FILENAME_MAX
];
361 make_filename(filename
, INDEX_SESSION
, sessionname
);
365 void *enum_settings_start(void)
368 char filename
[FILENAME_MAX
];
370 make_filename(filename
, INDEX_SESSIONDIR
, NULL
);
371 dp
= opendir(filename
);
376 char *enum_settings_next(void *handle
, char *buffer
, int buflen
)
378 DIR *dp
= (DIR *)handle
;
381 char fullpath
[FILENAME_MAX
];
385 make_filename(fullpath
, INDEX_SESSIONDIR
, NULL
);
386 len
= strlen(fullpath
);
388 while ( (de
= readdir(dp
)) != NULL
) {
389 if (len
< FILENAME_MAX
) {
391 strncpy(fullpath
+len
+1, de
->d_name
, FILENAME_MAX
-(len
+1));
392 fullpath
[FILENAME_MAX
-1] = '\0';
395 if (stat(fullpath
, &st
) < 0 || !S_ISREG(st
.st_mode
))
396 continue; /* try another one */
398 unmunged
= unmungestr(de
->d_name
);
399 strncpy(buffer
, unmunged
, buflen
);
400 buffer
[buflen
-1] = '\0';
408 void enum_settings_finish(void *handle
)
410 DIR *dp
= (DIR *)handle
;
415 * Lines in the host keys file are of the form
417 * type@port:hostname keydata
421 * rsa@22:foovax.example.org 0x23,0x293487364395345345....2343
423 int verify_host_key(const char *hostname
, int port
,
424 const char *keytype
, const char *key
)
427 char filename
[FILENAME_MAX
];
431 make_filename(filename
, INDEX_HOSTKEYS
, NULL
);
432 fp
= fopen(filename
, "r");
434 return 1; /* key does not exist */
437 while ( (line
= fgetline(fp
)) ) {
442 line
[strcspn(line
, "\n")] = '\0'; /* strip trailing newline */
445 if (strncmp(p
, keytype
, i
))
453 sprintf(porttext
, "%d", port
);
454 i
= strlen(porttext
);
455 if (strncmp(p
, porttext
, i
))
463 i
= strlen(hostname
);
464 if (strncmp(p
, hostname
, i
))
473 * Found the key. Now just work out whether it's the right
477 ret
= 0; /* key matched OK */
479 ret
= 2; /* key mismatch */
490 void store_host_key(const char *hostname
, int port
,
491 const char *keytype
, const char *key
)
495 char filename
[FILENAME_MAX
];
497 make_filename(filename
, INDEX_HOSTKEYS
, NULL
);
498 fd
= open(filename
, O_CREAT
| O_APPEND
| O_RDWR
, 0600);
500 char dir
[FILENAME_MAX
];
502 make_filename(dir
, INDEX_DIR
, NULL
);
504 fd
= open(filename
, O_CREAT
| O_APPEND
| O_RDWR
, 0600);
510 fp
= fdopen(fd
, "a");
511 fprintf(fp
, "%s@%d:%s %s\n", keytype
, port
, hostname
, key
);
515 void read_random_seed(noise_consumer_t consumer
)
518 char fname
[FILENAME_MAX
];
520 make_filename(fname
, INDEX_RANDSEED
, NULL
);
521 fd
= open(fname
, O_RDONLY
);
525 while ( (ret
= read(fd
, buf
, sizeof(buf
))) > 0)
531 void write_random_seed(void *data
, int len
)
534 char fname
[FILENAME_MAX
];
536 make_filename(fname
, INDEX_RANDSEED
, NULL
);
538 * Don't truncate the random seed file if it already exists; if
539 * something goes wrong half way through writing it, it would
540 * be better to leave the old data there than to leave it empty.
542 fd
= open(fname
, O_CREAT
| O_WRONLY
, 0600);
544 char dir
[FILENAME_MAX
];
546 make_filename(dir
, INDEX_DIR
, NULL
);
548 fd
= open(fname
, O_CREAT
| O_WRONLY
, 0600);
552 int ret
= write(fd
, data
, len
);
555 data
= (char *)data
+ len
;
561 void cleanup_all(void)