#include <stdio.h>
#include <stdlib.h>
+#include <assert.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
+#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "putty.h"
#include "storage.h"
#include "tree234.h"
+enum {
+ INDEX_DIR, INDEX_HOSTKEYS, INDEX_RANDSEED,
+ INDEX_SESSIONDIR, INDEX_SESSION,
+};
+
+static const char hex[16] = "0123456789ABCDEF";
+
+static char *mungestr(const char *in)
+{
+ char *out, *ret;
+
+ if (!in)
+ in = "Default Settings";
+
+ ret = out = snewn(3*strlen(in)+1, char);
+
+ while (*in) {
+ /*
+ * There are remarkably few punctuation characters that
+ * aren't shell-special in some way or likely to be used as
+ * separators in some file format or another! Hence we use
+ * opt-in for safe characters rather than opt-out for
+ * specific unsafe ones...
+ */
+ if (*in!='+' && *in!='-' && *in!='.' && *in!='@' && *in!='_' &&
+ !(*in >= '0' && *in <= '9') &&
+ !(*in >= 'A' && *in <= 'Z') &&
+ !(*in >= 'a' && *in <= 'z')) {
+ *out++ = '%';
+ *out++ = hex[((unsigned char) *in) >> 4];
+ *out++ = hex[((unsigned char) *in) & 15];
+ } else
+ *out++ = *in;
+ in++;
+ }
+ *out = '\0';
+ return ret;
+}
+
+static char *unmungestr(const char *in)
+{
+ char *out, *ret;
+ out = ret = snewn(strlen(in)+1, char);
+ while (*in) {
+ if (*in == '%' && in[1] && in[2]) {
+ int i, j;
+
+ i = in[1] - '0';
+ i -= (i > 9 ? 7 : 0);
+ j = in[2] - '0';
+ j -= (j > 9 ? 7 : 0);
+
+ *out++ = (i << 4) + j;
+ in += 3;
+ } else {
+ *out++ = *in++;
+ }
+ }
+ *out = '\0';
+ return ret;
+}
+
+static void make_filename(char *filename, int index, const char *subname)
+{
+ char *home;
+ int len;
+ home = getenv("HOME");
+ strncpy(filename, home, FILENAME_MAX);
+ len = strlen(filename);
+ if (index == INDEX_SESSION) {
+ char *munged = mungestr(subname);
+ char *fn = dupprintf("/.putty/sessions/%s", munged);
+ strncpy(filename + len, fn, FILENAME_MAX - len);
+ sfree(fn);
+ sfree(munged);
+ } else {
+ strncpy(filename + len,
+ index == INDEX_DIR ? "/.putty" :
+ index == INDEX_SESSIONDIR ? "/.putty/sessions" :
+ index == INDEX_HOSTKEYS ? "/.putty/sshhostkeys" :
+ index == INDEX_RANDSEED ? "/.putty/randomseed" :
+ "/.putty/ERROR", FILENAME_MAX - len);
+ }
+ filename[FILENAME_MAX-1] = '\0';
+}
+
+/*
+ * Read an entire line of text from a file. Return a buffer
+ * malloced to be as big as necessary (caller must free).
+ */
+static char *fgetline(FILE *fp)
+{
+ char *ret = snewn(512, char);
+ int size = 512, len = 0;
+ while (fgets(ret + len, size - len, fp)) {
+ len += strlen(ret + len);
+ if (ret[len-1] == '\n')
+ break; /* got a newline, we're done */
+ size = len + 512;
+ ret = sresize(ret, size, char);
+ }
+ if (len == 0) { /* first fgets returned NULL */
+ sfree(ret);
+ return NULL;
+ }
+ ret[len] = '\0';
+ return ret;
+}
+
/*
* For the moment, the only existing Unix utility is pterm and that
* has no GUI configuration at all, so our write routines need do
void *open_settings_w(const char *sessionname)
{
- return NULL;
+ char filename[FILENAME_MAX];
+ FILE *fp;
+
+ /*
+ * Start by making sure the sessions subdir exists. Ignore the
+ * error return from mkdir since it's perfectly likely to be
+ * `already exists', and any other error will trip us up later
+ * on so there's no real need to catch it now.
+ */
+ make_filename(filename, INDEX_SESSIONDIR, sessionname);
+ mkdir(filename, 0700);
+
+ make_filename(filename, INDEX_SESSION, sessionname);
+ fp = fopen(filename, "w");
+ if (!fp)
+ return NULL; /* can't open */
+ return fp;
}
void write_setting_s(void *handle, const char *key, const char *value)
{
+ FILE *fp = (FILE *)handle;
+ fprintf(fp, "%s=%s\n", key, value);
}
void write_setting_i(void *handle, const char *key, int value)
{
+ FILE *fp = (FILE *)handle;
+ fprintf(fp, "%s=%d\n", key, value);
}
void close_settings_w(void *handle)
{
+ FILE *fp = (FILE *)handle;
+ fclose(fp);
}
/*
* immediately work out.
*/
-struct xrm_string {
+struct keyval {
const char *key;
const char *value;
};
static tree234 *xrmtree = NULL;
-int xrmcmp(void *av, void *bv)
+int keycmp(void *av, void *bv)
{
- struct xrm_string *a = (struct xrm_string *)av;
- struct xrm_string *b = (struct xrm_string *)bv;
+ struct keyval *a = (struct keyval *)av;
+ struct keyval *b = (struct keyval *)bv;
return strcmp(a->key, b->key);
}
void provide_xrm_string(char *string)
{
char *p, *q, *key;
- struct xrm_string *xrms, *ret;
+ struct keyval *xrms, *ret;
p = q = strchr(string, ':');
if (!q) {
q++;
while (p > string && p[-1] != '.' && p[-1] != '*')
p--;
- xrms = snew(struct xrm_string);
+ xrms = snew(struct keyval);
key = snewn(q-p, char);
memcpy(key, p, q-p);
key[q-p-1] = '\0';
xrms->value = dupstr(q);
if (!xrmtree)
- xrmtree = newtree234(xrmcmp);
+ xrmtree = newtree234(keycmp);
ret = add234(xrmtree, xrms);
if (ret) {
const char *get_setting(const char *key)
{
- struct xrm_string tmp, *ret;
+ struct keyval tmp, *ret;
tmp.key = key;
if (xrmtree) {
ret = find234(xrmtree, &tmp, NULL);
void *open_settings_r(const char *sessionname)
{
- static int thing_to_return_an_arbitrary_non_null_pointer_to;
- return &thing_to_return_an_arbitrary_non_null_pointer_to;
+ char filename[FILENAME_MAX];
+ FILE *fp;
+ char *line;
+ tree234 *ret;
+
+ make_filename(filename, INDEX_SESSION, sessionname);
+ fp = fopen(filename, "r");
+ if (!fp)
+ return NULL; /* can't open */
+
+ ret = newtree234(keycmp);
+
+ while ( (line = fgetline(fp)) ) {
+ char *value = strchr(line, '=');
+ struct keyval *kv;
+
+ if (!value)
+ continue;
+ *value++ = '\0';
+ value[strcspn(value, "\r\n")] = '\0'; /* trim trailing NL */
+
+ kv = snew(struct keyval);
+ kv->key = dupstr(line);
+ kv->value = dupstr(value);
+ add234(ret, kv);
+
+ sfree(line);
+ }
+
+ fclose(fp);
+
+ return ret;
}
char *read_setting_s(void *handle, const char *key, char *buffer, int buflen)
{
- const char *val = get_setting(key);
+ tree234 *tree = (tree234 *)handle;
+ const char *val;
+ struct keyval tmp, *kv;
+
+ tmp.key = key;
+ if (tree != NULL &&
+ (kv = find234(tree, &tmp, NULL)) != NULL) {
+ val = kv->value;
+ assert(val != NULL);
+ } else
+ val = get_setting(key);
+
if (!val)
return NULL;
else {
int read_setting_i(void *handle, const char *key, int defvalue)
{
- const char *val = get_setting(key);
+ tree234 *tree = (tree234 *)handle;
+ const char *val;
+ struct keyval tmp, *kv;
+
+ tmp.key = key;
+ if (tree != NULL &&
+ (kv = find234(tree, &tmp, NULL)) != NULL) {
+ val = kv->value;
+ assert(val != NULL);
+ } else
+ val = get_setting(key);
+
if (!val)
return defvalue;
else
void close_settings_r(void *handle)
{
+ tree234 *tree = (tree234 *)handle;
+ struct keyval *kv;
+
+ if (!tree)
+ return;
+
+ while ( (kv = index234(tree, 0)) != NULL) {
+ del234(tree, kv);
+ sfree((char *)kv->key);
+ sfree((char *)kv->value);
+ sfree(kv);
+ }
+
+ freetree234(tree);
}
void del_settings(const char *sessionname)
{
+ char filename[FILENAME_MAX];
+ make_filename(filename, INDEX_SESSION, sessionname);
+ unlink(filename);
}
void *enum_settings_start(void)
{
- return NULL;
-}
+ DIR *dp;
+ char filename[FILENAME_MAX];
-char *enum_settings_next(void *handle, char *buffer, int buflen)
-{
- return NULL;
-}
+ make_filename(filename, INDEX_SESSIONDIR, NULL);
+ dp = opendir(filename);
-void enum_settings_finish(void *handle)
-{
+ return dp;
}
-enum {
- INDEX_DIR, INDEX_HOSTKEYS, INDEX_RANDSEED
-};
-
-static void make_filename(char *filename, int index)
+char *enum_settings_next(void *handle, char *buffer, int buflen)
{
- char *home;
+ DIR *dp = (DIR *)handle;
+ struct dirent *de;
+ struct stat st;
+ char fullpath[FILENAME_MAX];
int len;
- home = getenv("HOME");
- strncpy(filename, home, FILENAME_MAX);
- len = strlen(filename);
- strncpy(filename + len,
- index == INDEX_DIR ? "/.putty" :
- index == INDEX_HOSTKEYS ? "/.putty/sshhostkeys" :
- index == INDEX_RANDSEED ? "/.putty/randomseed" :
- "/.putty/ERROR", FILENAME_MAX - len);
- filename[FILENAME_MAX-1] = '\0';
+ char *unmunged;
+
+ make_filename(fullpath, INDEX_SESSIONDIR, NULL);
+ len = strlen(fullpath);
+
+ while ( (de = readdir(dp)) != NULL ) {
+ if (len < FILENAME_MAX) {
+ fullpath[len] = '/';
+ strncpy(fullpath+len+1, de->d_name, FILENAME_MAX-(len+1));
+ fullpath[FILENAME_MAX-1] = '\0';
+ }
+
+ if (stat(fullpath, &st) < 0 || !S_ISREG(st.st_mode))
+ continue; /* try another one */
+
+ unmunged = unmungestr(de->d_name);
+ strncpy(buffer, unmunged, buflen);
+ buffer[buflen-1] = '\0';
+ sfree(unmunged);
+ return buffer;
+ }
+
+ return NULL;
}
-/*
- * Read an entire line of text from a file. Return a buffer
- * malloced to be as big as necessary (caller must free).
- */
-static char *fgetline(FILE *fp)
+void enum_settings_finish(void *handle)
{
- char *ret = snewn(512, char);
- int size = 512, len = 0;
- while (fgets(ret + len, size - len, fp)) {
- len += strlen(ret + len);
- if (ret[len-1] == '\n')
- break; /* got a newline, we're done */
- size = len + 512;
- ret = sresize(ret, size, char);
- }
- if (len == 0) { /* first fgets returned NULL */
- sfree(ret);
- return NULL;
- }
- ret[len] = '\0';
- return ret;
+ DIR *dp = (DIR *)handle;
+ closedir(dp);
}
/*
char *line;
int ret;
- make_filename(filename, INDEX_HOSTKEYS);
+ make_filename(filename, INDEX_HOSTKEYS, NULL);
fp = fopen(filename, "r");
if (!fp)
return 1; /* key does not exist */
int fd;
char filename[FILENAME_MAX];
- make_filename(filename, INDEX_HOSTKEYS);
+ make_filename(filename, INDEX_HOSTKEYS, NULL);
fd = open(filename, O_CREAT | O_APPEND | O_RDWR, 0600);
if (fd < 0) {
char dir[FILENAME_MAX];
- make_filename(dir, INDEX_DIR);
+ make_filename(dir, INDEX_DIR, NULL);
mkdir(dir, 0700);
fd = open(filename, O_CREAT | O_APPEND | O_RDWR, 0600);
}
int fd;
char fname[FILENAME_MAX];
- make_filename(fname, INDEX_RANDSEED);
+ make_filename(fname, INDEX_RANDSEED, NULL);
fd = open(fname, O_RDONLY);
if (fd) {
char buf[512];
int fd;
char fname[FILENAME_MAX];
- make_filename(fname, INDEX_RANDSEED);
+ make_filename(fname, INDEX_RANDSEED, NULL);
/*
* Don't truncate the random seed file if it already exists; if
* something goes wrong half way through writing it, it would
if (fd < 0) {
char dir[FILENAME_MAX];
- make_filename(dir, INDEX_DIR);
+ make_filename(dir, INDEX_DIR, NULL);
mkdir(dir, 0700);
fd = open(fname, O_CREAT | O_WRONLY, 0600);
}
~mdw / sgt / putty / commitdiff