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authormarha <marha@users.sourceforge.net>2014-04-14 23:49:11 +0200
committermarha <marha@users.sourceforge.net>2014-04-14 23:49:11 +0200
commit3053928d3e9e12e59c46917113bad496487f1d28 (patch)
tree591c17cafc365399cc88774bba985af7276d957e /tools/plink/winstore.c
parent7c21629fbeb51b65fd0625bb36d888587d62fd89 (diff)
parenta3fe3e22d85e8aa795df85c21814fc84cac42e99 (diff)
downloadvcxsrv-3053928d3e9e12e59c46917113bad496487f1d28.tar.gz
vcxsrv-3053928d3e9e12e59c46917113bad496487f1d28.tar.bz2
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Merge remote-tracking branch 'origin/released'
Conflicts: tools/plink/misc.h tools/plink/ssh.c tools/plink/sshbn.c tools/plink/winplink.c
Diffstat (limited to 'tools/plink/winstore.c')
-rw-r--r--tools/plink/winstore.c1714
1 files changed, 868 insertions, 846 deletions
diff --git a/tools/plink/winstore.c b/tools/plink/winstore.c
index f152b8f69..ce5dae61d 100644
--- a/tools/plink/winstore.c
+++ b/tools/plink/winstore.c
@@ -1,846 +1,868 @@
-/*
- * winstore.c: Windows-specific implementation of the interface
- * defined in storage.h.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <limits.h>
-#include "putty.h"
-#include "storage.h"
-
-#include <shlobj.h>
-#ifndef CSIDL_APPDATA
-#define CSIDL_APPDATA 0x001a
-#endif
-#ifndef CSIDL_LOCAL_APPDATA
-#define CSIDL_LOCAL_APPDATA 0x001c
-#endif
-
-static const char *const reg_jumplist_key = PUTTY_REG_POS "\\Jumplist";
-static const char *const reg_jumplist_value = "Recent sessions";
-static const char *const puttystr = PUTTY_REG_POS "\\Sessions";
-
-static const char hex[16] = "0123456789ABCDEF";
-
-static int tried_shgetfolderpath = FALSE;
-static HMODULE shell32_module = NULL;
-DECL_WINDOWS_FUNCTION(static, HRESULT, SHGetFolderPathA,
- (HWND, int, HANDLE, DWORD, LPSTR));
-
-static void mungestr(const char *in, char *out)
-{
- int candot = 0;
-
- while (*in) {
- if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' ||
- *in == '%' || *in < ' ' || *in > '~' || (*in == '.'
- && !candot)) {
- *out++ = '%';
- *out++ = hex[((unsigned char) *in) >> 4];
- *out++ = hex[((unsigned char) *in) & 15];
- } else
- *out++ = *in;
- in++;
- candot = 1;
- }
- *out = '\0';
- return;
-}
-
-static void unmungestr(const char *in, char *out, int outlen)
-{
- 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;
- if (!--outlen)
- return;
- in += 3;
- } else {
- *out++ = *in++;
- if (!--outlen)
- return;
- }
- }
- *out = '\0';
- return;
-}
-
-void *open_settings_w(const char *sessionname, char **errmsg)
-{
- HKEY subkey1, sesskey;
- int ret;
- char *p;
-
- *errmsg = NULL;
-
- if (!sessionname || !*sessionname)
- sessionname = "Default Settings";
-
- p = snewn(3 * strlen(sessionname) + 1, char);
- mungestr(sessionname, p);
-
- ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1);
- if (ret != ERROR_SUCCESS) {
- sfree(p);
- *errmsg = dupprintf("Unable to create registry key\n"
- "HKEY_CURRENT_USER\\%s", puttystr);
- return NULL;
- }
- ret = RegCreateKey(subkey1, p, &sesskey);
- RegCloseKey(subkey1);
- if (ret != ERROR_SUCCESS) {
- *errmsg = dupprintf("Unable to create registry key\n"
- "HKEY_CURRENT_USER\\%s\\%s", puttystr, p);
- sfree(p);
- return NULL;
- }
- sfree(p);
- return (void *) sesskey;
-}
-
-void write_setting_s(void *handle, const char *key, const char *value)
-{
- if (handle)
- RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value,
- 1 + strlen(value));
-}
-
-void write_setting_i(void *handle, const char *key, int value)
-{
- if (handle)
- RegSetValueEx((HKEY) handle, key, 0, REG_DWORD,
- (CONST BYTE *) &value, sizeof(value));
-}
-
-void close_settings_w(void *handle)
-{
- RegCloseKey((HKEY) handle);
-}
-
-void *open_settings_r(const char *sessionname)
-{
- HKEY subkey1, sesskey;
- char *p;
-
- if (!sessionname || !*sessionname)
- sessionname = "Default Settings";
-
- p = snewn(3 * strlen(sessionname) + 1, char);
- mungestr(sessionname, p);
-
- if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) {
- sesskey = NULL;
- } else {
- if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) {
- sesskey = NULL;
- }
- RegCloseKey(subkey1);
- }
-
- sfree(p);
-
- return (void *) sesskey;
-}
-
-char *read_setting_s(void *handle, const char *key)
-{
- DWORD type, size;
- char *ret;
-
- if (!handle)
- return NULL;
-
- /* Find out the type and size of the data. */
- if (RegQueryValueEx((HKEY) handle, key, 0,
- &type, NULL, &size) != ERROR_SUCCESS ||
- type != REG_SZ)
- return NULL;
-
- ret = snewn(size+1, char);
- if (RegQueryValueEx((HKEY) handle, key, 0,
- &type, ret, &size) != ERROR_SUCCESS ||
- type != REG_SZ) return NULL;
-
- return ret;
-}
-
-int read_setting_i(void *handle, const char *key, int defvalue)
-{
- DWORD type, val, size;
- size = sizeof(val);
-
- if (!handle ||
- RegQueryValueEx((HKEY) handle, key, 0, &type,
- (BYTE *) &val, &size) != ERROR_SUCCESS ||
- size != sizeof(val) || type != REG_DWORD)
- return defvalue;
- else
- return val;
-}
-
-FontSpec *read_setting_fontspec(void *handle, const char *name)
-{
- char *settingname;
- char *fontname;
- int isbold, height, charset;
-
- fontname = read_setting_s(handle, name);
- if (!fontname)
- return NULL;
-
- settingname = dupcat(name, "IsBold", NULL);
- isbold = read_setting_i(handle, settingname, -1);
- sfree(settingname);
- if (isbold == -1) return NULL;
-
- settingname = dupcat(name, "CharSet", NULL);
- charset = read_setting_i(handle, settingname, -1);
- sfree(settingname);
- if (charset == -1) return NULL;
-
- settingname = dupcat(name, "Height", NULL);
- height = read_setting_i(handle, settingname, INT_MIN);
- sfree(settingname);
- if (height == INT_MIN) return NULL;
-
- return fontspec_new(fontname, isbold, height, charset);
-}
-
-void write_setting_fontspec(void *handle, const char *name, FontSpec *font)
-{
- char *settingname;
-
- write_setting_s(handle, name, font->name);
- settingname = dupcat(name, "IsBold", NULL);
- write_setting_i(handle, settingname, font->isbold);
- sfree(settingname);
- settingname = dupcat(name, "CharSet", NULL);
- write_setting_i(handle, settingname, font->charset);
- sfree(settingname);
- settingname = dupcat(name, "Height", NULL);
- write_setting_i(handle, settingname, font->height);
- sfree(settingname);
-}
-
-Filename *read_setting_filename(void *handle, const char *name)
-{
- char *tmp = read_setting_s(handle, name);
- if (tmp) {
- Filename *ret = filename_from_str(tmp);
- sfree(tmp);
- return ret;
- } else
- return NULL;
-}
-
-void write_setting_filename(void *handle, const char *name, Filename *result)
-{
- write_setting_s(handle, name, result->path);
-}
-
-void close_settings_r(void *handle)
-{
- RegCloseKey((HKEY) handle);
-}
-
-void del_settings(const char *sessionname)
-{
- HKEY subkey1;
- char *p;
-
- if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS)
- return;
-
- p = snewn(3 * strlen(sessionname) + 1, char);
- mungestr(sessionname, p);
- RegDeleteKey(subkey1, p);
- sfree(p);
-
- RegCloseKey(subkey1);
-
- remove_session_from_jumplist(sessionname);
-}
-
-struct enumsettings {
- HKEY key;
- int i;
-};
-
-void *enum_settings_start(void)
-{
- struct enumsettings *ret;
- HKEY key;
-
- if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS)
- return NULL;
-
- ret = snew(struct enumsettings);
- if (ret) {
- ret->key = key;
- ret->i = 0;
- }
-
- return ret;
-}
-
-char *enum_settings_next(void *handle, char *buffer, int buflen)
-{
- struct enumsettings *e = (struct enumsettings *) handle;
- char *otherbuf;
- otherbuf = snewn(3 * buflen, char);
- if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) {
- unmungestr(otherbuf, buffer, buflen);
- sfree(otherbuf);
- return buffer;
- } else {
- sfree(otherbuf);
- return NULL;
- }
-}
-
-void enum_settings_finish(void *handle)
-{
- struct enumsettings *e = (struct enumsettings *) handle;
- RegCloseKey(e->key);
- sfree(e);
-}
-
-static void hostkey_regname(char *buffer, const char *hostname,
- int port, const char *keytype)
-{
- int len;
- strcpy(buffer, keytype);
- strcat(buffer, "@");
- len = strlen(buffer);
- len += sprintf(buffer + len, "%d:", port);
- mungestr(hostname, buffer + strlen(buffer));
-}
-
-int verify_host_key(const char *hostname, int port,
- const char *keytype, const char *key)
-{
- char *otherstr, *regname;
- int len;
- HKEY rkey;
- DWORD readlen;
- DWORD type;
- int ret, compare;
-
- len = 1 + strlen(key);
-
- /*
- * Now read a saved key in from the registry and see what it
- * says.
- */
- otherstr = snewn(len, char);
- regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
-
- hostkey_regname(regname, hostname, port, keytype);
-
- if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
- &rkey) != ERROR_SUCCESS)
- return 1; /* key does not exist in registry */
-
- readlen = len;
- ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen);
-
- if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA &&
- !strcmp(keytype, "rsa")) {
- /*
- * Key didn't exist. If the key type is RSA, we'll try
- * another trick, which is to look up the _old_ key format
- * under just the hostname and translate that.
- */
- char *justhost = regname + 1 + strcspn(regname, ":");
- char *oldstyle = snewn(len + 10, char); /* safety margin */
- readlen = len;
- ret = RegQueryValueEx(rkey, justhost, NULL, &type,
- oldstyle, &readlen);
-
- if (ret == ERROR_SUCCESS && type == REG_SZ) {
- /*
- * The old format is two old-style bignums separated by
- * a slash. An old-style bignum is made of groups of
- * four hex digits: digits are ordered in sensible
- * (most to least significant) order within each group,
- * but groups are ordered in silly (least to most)
- * order within the bignum. The new format is two
- * ordinary C-format hex numbers (0xABCDEFG...XYZ, with
- * A nonzero except in the special case 0x0, which
- * doesn't appear anyway in RSA keys) separated by a
- * comma. All hex digits are lowercase in both formats.
- */
- char *p = otherstr;
- char *q = oldstyle;
- int i, j;
-
- for (i = 0; i < 2; i++) {
- int ndigits, nwords;
- *p++ = '0';
- *p++ = 'x';
- ndigits = strcspn(q, "/"); /* find / or end of string */
- nwords = ndigits / 4;
- /* now trim ndigits to remove leading zeros */
- while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1)
- ndigits--;
- /* now move digits over to new string */
- for (j = 0; j < ndigits; j++)
- p[ndigits - 1 - j] = q[j ^ 3];
- p += ndigits;
- q += nwords * 4;
- if (*q) {
- q++; /* eat the slash */
- *p++ = ','; /* add a comma */
- }
- *p = '\0'; /* terminate the string */
- }
-
- /*
- * Now _if_ this key matches, we'll enter it in the new
- * format. If not, we'll assume something odd went
- * wrong, and hyper-cautiously do nothing.
- */
- if (!strcmp(otherstr, key))
- RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr,
- strlen(otherstr) + 1);
- }
- }
-
- RegCloseKey(rkey);
-
- compare = strcmp(otherstr, key);
-
- sfree(otherstr);
- sfree(regname);
-
- if (ret == ERROR_MORE_DATA ||
- (ret == ERROR_SUCCESS && type == REG_SZ && compare))
- return 2; /* key is different in registry */
- else if (ret != ERROR_SUCCESS || type != REG_SZ)
- return 1; /* key does not exist in registry */
- else
- return 0; /* key matched OK in registry */
-}
-
-void store_host_key(const char *hostname, int port,
- const char *keytype, const char *key)
-{
- char *regname;
- HKEY rkey;
-
- regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
-
- hostkey_regname(regname, hostname, port, keytype);
-
- if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
- &rkey) == ERROR_SUCCESS) {
- RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1);
- RegCloseKey(rkey);
- } /* else key does not exist in registry */
-
- sfree(regname);
-}
-
-/*
- * Open (or delete) the random seed file.
- */
-enum { DEL, OPEN_R, OPEN_W };
-static int try_random_seed(char const *path, int action, HANDLE *ret)
-{
- if (action == DEL) {
- remove(path);
- *ret = INVALID_HANDLE_VALUE;
- return FALSE; /* so we'll do the next ones too */
- }
-
- *ret = CreateFile(path,
- action == OPEN_W ? GENERIC_WRITE : GENERIC_READ,
- action == OPEN_W ? 0 : (FILE_SHARE_READ |
- FILE_SHARE_WRITE),
- NULL,
- action == OPEN_W ? CREATE_ALWAYS : OPEN_EXISTING,
- action == OPEN_W ? FILE_ATTRIBUTE_NORMAL : 0,
- NULL);
-
- return (*ret != INVALID_HANDLE_VALUE);
-}
-
-static HANDLE access_random_seed(int action)
-{
- HKEY rkey;
- DWORD type, size;
- HANDLE rethandle;
- char seedpath[2 * MAX_PATH + 10] = "\0";
-
- /*
- * Iterate over a selection of possible random seed paths until
- * we find one that works.
- *
- * We do this iteration separately for reading and writing,
- * meaning that we will automatically migrate random seed files
- * if a better location becomes available (by reading from the
- * best location in which we actually find one, and then
- * writing to the best location in which we can _create_ one).
- */
-
- /*
- * First, try the location specified by the user in the
- * Registry, if any.
- */
- size = sizeof(seedpath);
- if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) ==
- ERROR_SUCCESS) {
- int ret = RegQueryValueEx(rkey, "RandSeedFile",
- 0, &type, seedpath, &size);
- if (ret != ERROR_SUCCESS || type != REG_SZ)
- seedpath[0] = '\0';
- RegCloseKey(rkey);
-
- if (*seedpath && try_random_seed(seedpath, action, &rethandle))
- return rethandle;
- }
-
- /*
- * Next, try the user's local Application Data directory,
- * followed by their non-local one. This is found using the
- * SHGetFolderPath function, which won't be present on all
- * versions of Windows.
- */
- if (!tried_shgetfolderpath) {
- /* This is likely only to bear fruit on systems with IE5+
- * installed, or WinMe/2K+. There is some faffing with
- * SHFOLDER.DLL we could do to try to find an equivalent
- * on older versions of Windows if we cared enough.
- * However, the invocation below requires IE5+ anyway,
- * so stuff that. */
- shell32_module = load_system32_dll("shell32.dll");
- GET_WINDOWS_FUNCTION(shell32_module, SHGetFolderPathA);
- tried_shgetfolderpath = TRUE;
- }
- if (p_SHGetFolderPathA) {
- if (SUCCEEDED(p_SHGetFolderPathA(NULL, CSIDL_LOCAL_APPDATA,
- NULL, SHGFP_TYPE_CURRENT, seedpath))) {
- strcat(seedpath, "\\PUTTY.RND");
- if (try_random_seed(seedpath, action, &rethandle))
- return rethandle;
- }
-
- if (SUCCEEDED(p_SHGetFolderPathA(NULL, CSIDL_APPDATA,
- NULL, SHGFP_TYPE_CURRENT, seedpath))) {
- strcat(seedpath, "\\PUTTY.RND");
- if (try_random_seed(seedpath, action, &rethandle))
- return rethandle;
- }
- }
-
- /*
- * Failing that, try %HOMEDRIVE%%HOMEPATH% as a guess at the
- * user's home directory.
- */
- {
- int len, ret;
-
- len =
- GetEnvironmentVariable("HOMEDRIVE", seedpath,
- sizeof(seedpath));
- ret =
- GetEnvironmentVariable("HOMEPATH", seedpath + len,
- sizeof(seedpath) - len);
- if (ret != 0) {
- strcat(seedpath, "\\PUTTY.RND");
- if (try_random_seed(seedpath, action, &rethandle))
- return rethandle;
- }
- }
-
- /*
- * And finally, fall back to C:\WINDOWS.
- */
- GetWindowsDirectory(seedpath, sizeof(seedpath));
- strcat(seedpath, "\\PUTTY.RND");
- if (try_random_seed(seedpath, action, &rethandle))
- return rethandle;
-
- /*
- * If even that failed, give up.
- */
- return INVALID_HANDLE_VALUE;
-}
-
-void read_random_seed(noise_consumer_t consumer)
-{
- HANDLE seedf = access_random_seed(OPEN_R);
-
- if (seedf != INVALID_HANDLE_VALUE) {
- while (1) {
- char buf[1024];
- DWORD len;
-
- if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len)
- consumer(buf, len);
- else
- break;
- }
- CloseHandle(seedf);
- }
-}
-
-void write_random_seed(void *data, int len)
-{
- HANDLE seedf = access_random_seed(OPEN_W);
-
- if (seedf != INVALID_HANDLE_VALUE) {
- DWORD lenwritten;
-
- WriteFile(seedf, data, len, &lenwritten, NULL);
- CloseHandle(seedf);
- }
-}
-
-/*
- * Internal function supporting the jump list registry code. All the
- * functions to add, remove and read the list have substantially
- * similar content, so this is a generalisation of all of them which
- * transforms the list in the registry by prepending 'add' (if
- * non-null), removing 'rem' from what's left (if non-null), and
- * returning the resulting concatenated list of strings in 'out' (if
- * non-null).
- */
-static int transform_jumplist_registry
- (const char *add, const char *rem, char **out)
-{
- int ret;
- HKEY pjumplist_key, psettings_tmp;
- DWORD type;
- int value_length;
- char *old_value, *new_value;
- char *piterator_old, *piterator_new, *piterator_tmp;
-
- ret = RegCreateKeyEx(HKEY_CURRENT_USER, reg_jumplist_key, 0, NULL,
- REG_OPTION_NON_VOLATILE, (KEY_READ | KEY_WRITE), NULL,
- &pjumplist_key, NULL);
- if (ret != ERROR_SUCCESS) {
- return JUMPLISTREG_ERROR_KEYOPENCREATE_FAILURE;
- }
-
- /* Get current list of saved sessions in the registry. */
- value_length = 200;
- old_value = snewn(value_length, char);
- ret = RegQueryValueEx(pjumplist_key, reg_jumplist_value, NULL, &type,
- old_value, &value_length);
- /* When the passed buffer is too small, ERROR_MORE_DATA is
- * returned and the required size is returned in the length
- * argument. */
- if (ret == ERROR_MORE_DATA) {
- sfree(old_value);
- old_value = snewn(value_length, char);
- ret = RegQueryValueEx(pjumplist_key, reg_jumplist_value, NULL, &type,
- old_value, &value_length);
- }
-
- if (ret == ERROR_FILE_NOT_FOUND) {
- /* Value doesn't exist yet. Start from an empty value. */
- *old_value = '\0';
- *(old_value + 1) = '\0';
- } else if (ret != ERROR_SUCCESS) {
- /* Some non-recoverable error occurred. */
- sfree(old_value);
- RegCloseKey(pjumplist_key);
- return JUMPLISTREG_ERROR_VALUEREAD_FAILURE;
- } else if (type != REG_MULTI_SZ) {
- /* The value present in the registry has the wrong type: we
- * try to delete it and start from an empty value. */
- ret = RegDeleteValue(pjumplist_key, reg_jumplist_value);
- if (ret != ERROR_SUCCESS) {
- sfree(old_value);
- RegCloseKey(pjumplist_key);
- return JUMPLISTREG_ERROR_VALUEREAD_FAILURE;
- }
-
- *old_value = '\0';
- *(old_value + 1) = '\0';
- }
-
- /* Check validity of registry data: REG_MULTI_SZ value must end
- * with \0\0. */
- piterator_tmp = old_value;
- while (((piterator_tmp - old_value) < (value_length - 1)) &&
- !(*piterator_tmp == '\0' && *(piterator_tmp+1) == '\0')) {
- ++piterator_tmp;
- }
-
- if ((piterator_tmp - old_value) >= (value_length-1)) {
- /* Invalid value. Start from an empty value. */
- *old_value = '\0';
- *(old_value + 1) = '\0';
- }
-
- /*
- * Modify the list, if we're modifying.
- */
- if (add || rem) {
- /* Walk through the existing list and construct the new list of
- * saved sessions. */
- new_value = snewn(value_length + (add ? strlen(add) + 1 : 0), char);
- piterator_new = new_value;
- piterator_old = old_value;
-
- /* First add the new item to the beginning of the list. */
- if (add) {
- strcpy(piterator_new, add);
- piterator_new += strlen(piterator_new) + 1;
- }
- /* Now add the existing list, taking care to leave out the removed
- * item, if it was already in the existing list. */
- while (*piterator_old != '\0') {
- if (!rem || strcmp(piterator_old, rem) != 0) {
- /* Check if this is a valid session, otherwise don't add. */
- psettings_tmp = open_settings_r(piterator_old);
- if (psettings_tmp != NULL) {
- close_settings_r(psettings_tmp);
- strcpy(piterator_new, piterator_old);
- piterator_new += strlen(piterator_new) + 1;
- }
- }
- piterator_old += strlen(piterator_old) + 1;
- }
- *piterator_new = '\0';
- ++piterator_new;
-
- /* Save the new list to the registry. */
- ret = RegSetValueEx(pjumplist_key, reg_jumplist_value, 0, REG_MULTI_SZ,
- new_value, piterator_new - new_value);
-
- sfree(old_value);
- old_value = new_value;
- } else
- ret = ERROR_SUCCESS;
-
- /*
- * Either return or free the result.
- */
- if (out)
- *out = old_value;
- else
- sfree(old_value);
-
- /* Clean up and return. */
- RegCloseKey(pjumplist_key);
-
- if (ret != ERROR_SUCCESS) {
- return JUMPLISTREG_ERROR_VALUEWRITE_FAILURE;
- } else {
- return JUMPLISTREG_OK;
- }
-}
-
-/* Adds a new entry to the jumplist entries in the registry. */
-int add_to_jumplist_registry(const char *item)
-{
- return transform_jumplist_registry(item, item, NULL);
-}
-
-/* Removes an item from the jumplist entries in the registry. */
-int remove_from_jumplist_registry(const char *item)
-{
- return transform_jumplist_registry(NULL, item, NULL);
-}
-
-/* Returns the jumplist entries from the registry. Caller must free
- * the returned pointer. */
-char *get_jumplist_registry_entries (void)
-{
- char *list_value;
-
- if (transform_jumplist_registry(NULL,NULL,&list_value) != ERROR_SUCCESS) {
- list_value = snewn(2, char);
- *list_value = '\0';
- *(list_value + 1) = '\0';
- }
- return list_value;
-}
-
-/*
- * Recursively delete a registry key and everything under it.
- */
-static void registry_recursive_remove(HKEY key)
-{
- DWORD i;
- char name[MAX_PATH + 1];
- HKEY subkey;
-
- i = 0;
- while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) {
- if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) {
- registry_recursive_remove(subkey);
- RegCloseKey(subkey);
- }
- RegDeleteKey(key, name);
- }
-}
-
-void cleanup_all(void)
-{
- HKEY key;
- int ret;
- char name[MAX_PATH + 1];
-
- /* ------------------------------------------------------------
- * Wipe out the random seed file, in all of its possible
- * locations.
- */
- access_random_seed(DEL);
-
- /* ------------------------------------------------------------
- * Ask Windows to delete any jump list information associated
- * with this installation of PuTTY.
- */
- clear_jumplist();
-
- /* ------------------------------------------------------------
- * Destroy all registry information associated with PuTTY.
- */
-
- /*
- * Open the main PuTTY registry key and remove everything in it.
- */
- if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) ==
- ERROR_SUCCESS) {
- registry_recursive_remove(key);
- RegCloseKey(key);
- }
- /*
- * Now open the parent key and remove the PuTTY main key. Once
- * we've done that, see if the parent key has any other
- * children.
- */
- if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT,
- &key) == ERROR_SUCCESS) {
- RegDeleteKey(key, PUTTY_REG_PARENT_CHILD);
- ret = RegEnumKey(key, 0, name, sizeof(name));
- RegCloseKey(key);
- /*
- * If the parent key had no other children, we must delete
- * it in its turn. That means opening the _grandparent_
- * key.
- */
- if (ret != ERROR_SUCCESS) {
- if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT,
- &key) == ERROR_SUCCESS) {
- RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD);
- RegCloseKey(key);
- }
- }
- }
- /*
- * Now we're done.
- */
-}
+/*
+ * winstore.c: Windows-specific implementation of the interface
+ * defined in storage.h.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include "putty.h"
+#include "storage.h"
+
+#include <shlobj.h>
+#ifndef CSIDL_APPDATA
+#define CSIDL_APPDATA 0x001a
+#endif
+#ifndef CSIDL_LOCAL_APPDATA
+#define CSIDL_LOCAL_APPDATA 0x001c
+#endif
+
+static const char *const reg_jumplist_key = PUTTY_REG_POS "\\Jumplist";
+static const char *const reg_jumplist_value = "Recent sessions";
+static const char *const puttystr = PUTTY_REG_POS "\\Sessions";
+
+static const char hex[16] = "0123456789ABCDEF";
+
+static int tried_shgetfolderpath = FALSE;
+static HMODULE shell32_module = NULL;
+DECL_WINDOWS_FUNCTION(static, HRESULT, SHGetFolderPathA,
+ (HWND, int, HANDLE, DWORD, LPSTR));
+
+static void mungestr(const char *in, char *out)
+{
+ int candot = 0;
+
+ while (*in) {
+ if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' ||
+ *in == '%' || *in < ' ' || *in > '~' || (*in == '.'
+ && !candot)) {
+ *out++ = '%';
+ *out++ = hex[((unsigned char) *in) >> 4];
+ *out++ = hex[((unsigned char) *in) & 15];
+ } else
+ *out++ = *in;
+ in++;
+ candot = 1;
+ }
+ *out = '\0';
+ return;
+}
+
+static void unmungestr(const char *in, char *out, int outlen)
+{
+ 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;
+ if (!--outlen)
+ return;
+ in += 3;
+ } else {
+ *out++ = *in++;
+ if (!--outlen)
+ return;
+ }
+ }
+ *out = '\0';
+ return;
+}
+
+void *open_settings_w(const char *sessionname, char **errmsg)
+{
+ HKEY subkey1, sesskey;
+ int ret;
+ char *p;
+
+ *errmsg = NULL;
+
+ if (!sessionname || !*sessionname)
+ sessionname = "Default Settings";
+
+ p = snewn(3 * strlen(sessionname) + 1, char);
+ mungestr(sessionname, p);
+
+ ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1);
+ if (ret != ERROR_SUCCESS) {
+ sfree(p);
+ *errmsg = dupprintf("Unable to create registry key\n"
+ "HKEY_CURRENT_USER\\%s", puttystr);
+ return NULL;
+ }
+ ret = RegCreateKey(subkey1, p, &sesskey);
+ RegCloseKey(subkey1);
+ if (ret != ERROR_SUCCESS) {
+ *errmsg = dupprintf("Unable to create registry key\n"
+ "HKEY_CURRENT_USER\\%s\\%s", puttystr, p);
+ sfree(p);
+ return NULL;
+ }
+ sfree(p);
+ return (void *) sesskey;
+}
+
+void write_setting_s(void *handle, const char *key, const char *value)
+{
+ if (handle)
+ RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value,
+ 1 + strlen(value));
+}
+
+void write_setting_i(void *handle, const char *key, int value)
+{
+ if (handle)
+ RegSetValueEx((HKEY) handle, key, 0, REG_DWORD,
+ (CONST BYTE *) &value, sizeof(value));
+}
+
+void close_settings_w(void *handle)
+{
+ RegCloseKey((HKEY) handle);
+}
+
+void *open_settings_r(const char *sessionname)
+{
+ HKEY subkey1, sesskey;
+ char *p;
+
+ if (!sessionname || !*sessionname)
+ sessionname = "Default Settings";
+
+ p = snewn(3 * strlen(sessionname) + 1, char);
+ mungestr(sessionname, p);
+
+ if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) {
+ sesskey = NULL;
+ } else {
+ if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) {
+ sesskey = NULL;
+ }
+ RegCloseKey(subkey1);
+ }
+
+ sfree(p);
+
+ return (void *) sesskey;
+}
+
+char *read_setting_s(void *handle, const char *key)
+{
+ DWORD type, size;
+ char *ret;
+
+ if (!handle)
+ return NULL;
+
+ /* Find out the type and size of the data. */
+ if (RegQueryValueEx((HKEY) handle, key, 0,
+ &type, NULL, &size) != ERROR_SUCCESS ||
+ type != REG_SZ)
+ return NULL;
+
+ ret = snewn(size+1, char);
+ if (RegQueryValueEx((HKEY) handle, key, 0,
+ &type, ret, &size) != ERROR_SUCCESS ||
+ type != REG_SZ) {
+ sfree(ret);
+ return NULL;
+ }
+
+ return ret;
+}
+
+int read_setting_i(void *handle, const char *key, int defvalue)
+{
+ DWORD type, val, size;
+ size = sizeof(val);
+
+ if (!handle ||
+ RegQueryValueEx((HKEY) handle, key, 0, &type,
+ (BYTE *) &val, &size) != ERROR_SUCCESS ||
+ size != sizeof(val) || type != REG_DWORD)
+ return defvalue;
+ else
+ return val;
+}
+
+FontSpec *read_setting_fontspec(void *handle, const char *name)
+{
+ char *settingname;
+ char *fontname;
+ FontSpec *ret;
+ int isbold, height, charset;
+
+ fontname = read_setting_s(handle, name);
+ if (!fontname)
+ return NULL;
+
+ settingname = dupcat(name, "IsBold", NULL);
+ isbold = read_setting_i(handle, settingname, -1);
+ sfree(settingname);
+ if (isbold == -1) {
+ sfree(fontname);
+ return NULL;
+ }
+
+ settingname = dupcat(name, "CharSet", NULL);
+ charset = read_setting_i(handle, settingname, -1);
+ sfree(settingname);
+ if (charset == -1) {
+ sfree(fontname);
+ return NULL;
+ }
+
+ settingname = dupcat(name, "Height", NULL);
+ height = read_setting_i(handle, settingname, INT_MIN);
+ sfree(settingname);
+ if (height == INT_MIN) {
+ sfree(fontname);
+ return NULL;
+ }
+
+ ret = fontspec_new(fontname, isbold, height, charset);
+ sfree(fontname);
+ return ret;
+}
+
+void write_setting_fontspec(void *handle, const char *name, FontSpec *font)
+{
+ char *settingname;
+
+ write_setting_s(handle, name, font->name);
+ settingname = dupcat(name, "IsBold", NULL);
+ write_setting_i(handle, settingname, font->isbold);
+ sfree(settingname);
+ settingname = dupcat(name, "CharSet", NULL);
+ write_setting_i(handle, settingname, font->charset);
+ sfree(settingname);
+ settingname = dupcat(name, "Height", NULL);
+ write_setting_i(handle, settingname, font->height);
+ sfree(settingname);
+}
+
+Filename *read_setting_filename(void *handle, const char *name)
+{
+ char *tmp = read_setting_s(handle, name);
+ if (tmp) {
+ Filename *ret = filename_from_str(tmp);
+ sfree(tmp);
+ return ret;
+ } else
+ return NULL;
+}
+
+void write_setting_filename(void *handle, const char *name, Filename *result)
+{
+ write_setting_s(handle, name, result->path);
+}
+
+void close_settings_r(void *handle)
+{
+ RegCloseKey((HKEY) handle);
+}
+
+void del_settings(const char *sessionname)
+{
+ HKEY subkey1;
+ char *p;
+
+ if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS)
+ return;
+
+ p = snewn(3 * strlen(sessionname) + 1, char);
+ mungestr(sessionname, p);
+ RegDeleteKey(subkey1, p);
+ sfree(p);
+
+ RegCloseKey(subkey1);
+
+ remove_session_from_jumplist(sessionname);
+}
+
+struct enumsettings {
+ HKEY key;
+ int i;
+};
+
+void *enum_settings_start(void)
+{
+ struct enumsettings *ret;
+ HKEY key;
+
+ if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS)
+ return NULL;
+
+ ret = snew(struct enumsettings);
+ if (ret) {
+ ret->key = key;
+ ret->i = 0;
+ }
+
+ return ret;
+}
+
+char *enum_settings_next(void *handle, char *buffer, int buflen)
+{
+ struct enumsettings *e = (struct enumsettings *) handle;
+ char *otherbuf;
+ otherbuf = snewn(3 * buflen, char);
+ if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) {
+ unmungestr(otherbuf, buffer, buflen);
+ sfree(otherbuf);
+ return buffer;
+ } else {
+ sfree(otherbuf);
+ return NULL;
+ }
+}
+
+void enum_settings_finish(void *handle)
+{
+ struct enumsettings *e = (struct enumsettings *) handle;
+ RegCloseKey(e->key);
+ sfree(e);
+}
+
+static void hostkey_regname(char *buffer, const char *hostname,
+ int port, const char *keytype)
+{
+ int len;
+ strcpy(buffer, keytype);
+ strcat(buffer, "@");
+ len = strlen(buffer);
+ len += sprintf(buffer + len, "%d:", port);
+ mungestr(hostname, buffer + strlen(buffer));
+}
+
+int verify_host_key(const char *hostname, int port,
+ const char *keytype, const char *key)
+{
+ char *otherstr, *regname;
+ int len;
+ HKEY rkey;
+ DWORD readlen;
+ DWORD type;
+ int ret, compare;
+
+ len = 1 + strlen(key);
+
+ /*
+ * Now read a saved key in from the registry and see what it
+ * says.
+ */
+ regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
+
+ hostkey_regname(regname, hostname, port, keytype);
+
+ if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
+ &rkey) != ERROR_SUCCESS) {
+ sfree(regname);
+ return 1; /* key does not exist in registry */
+ }
+
+ readlen = len;
+ otherstr = snewn(len, char);
+ ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen);
+
+ if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA &&
+ !strcmp(keytype, "rsa")) {
+ /*
+ * Key didn't exist. If the key type is RSA, we'll try
+ * another trick, which is to look up the _old_ key format
+ * under just the hostname and translate that.
+ */
+ char *justhost = regname + 1 + strcspn(regname, ":");
+ char *oldstyle = snewn(len + 10, char); /* safety margin */
+ readlen = len;
+ ret = RegQueryValueEx(rkey, justhost, NULL, &type,
+ oldstyle, &readlen);
+
+ if (ret == ERROR_SUCCESS && type == REG_SZ) {
+ /*
+ * The old format is two old-style bignums separated by
+ * a slash. An old-style bignum is made of groups of
+ * four hex digits: digits are ordered in sensible
+ * (most to least significant) order within each group,
+ * but groups are ordered in silly (least to most)
+ * order within the bignum. The new format is two
+ * ordinary C-format hex numbers (0xABCDEFG...XYZ, with
+ * A nonzero except in the special case 0x0, which
+ * doesn't appear anyway in RSA keys) separated by a
+ * comma. All hex digits are lowercase in both formats.
+ */
+ char *p = otherstr;
+ char *q = oldstyle;
+ int i, j;
+
+ for (i = 0; i < 2; i++) {
+ int ndigits, nwords;
+ *p++ = '0';
+ *p++ = 'x';
+ ndigits = strcspn(q, "/"); /* find / or end of string */
+ nwords = ndigits / 4;
+ /* now trim ndigits to remove leading zeros */
+ while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1)
+ ndigits--;
+ /* now move digits over to new string */
+ for (j = 0; j < ndigits; j++)
+ p[ndigits - 1 - j] = q[j ^ 3];
+ p += ndigits;
+ q += nwords * 4;
+ if (*q) {
+ q++; /* eat the slash */
+ *p++ = ','; /* add a comma */
+ }
+ *p = '\0'; /* terminate the string */
+ }
+
+ /*
+ * Now _if_ this key matches, we'll enter it in the new
+ * format. If not, we'll assume something odd went
+ * wrong, and hyper-cautiously do nothing.
+ */
+ if (!strcmp(otherstr, key))
+ RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr,
+ strlen(otherstr) + 1);
+ }
+
+ sfree(oldstyle);
+ }
+
+ RegCloseKey(rkey);
+
+ compare = strcmp(otherstr, key);
+
+ sfree(otherstr);
+ sfree(regname);
+
+ if (ret == ERROR_MORE_DATA ||
+ (ret == ERROR_SUCCESS && type == REG_SZ && compare))
+ return 2; /* key is different in registry */
+ else if (ret != ERROR_SUCCESS || type != REG_SZ)
+ return 1; /* key does not exist in registry */
+ else
+ return 0; /* key matched OK in registry */
+}
+
+void store_host_key(const char *hostname, int port,
+ const char *keytype, const char *key)
+{
+ char *regname;
+ HKEY rkey;
+
+ regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
+
+ hostkey_regname(regname, hostname, port, keytype);
+
+ if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
+ &rkey) == ERROR_SUCCESS) {
+ RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1);
+ RegCloseKey(rkey);
+ } /* else key does not exist in registry */
+
+ sfree(regname);
+}
+
+/*
+ * Open (or delete) the random seed file.
+ */
+enum { DEL, OPEN_R, OPEN_W };
+static int try_random_seed(char const *path, int action, HANDLE *ret)
+{
+ if (action == DEL) {
+ if (!DeleteFile(path) && GetLastError() != ERROR_FILE_NOT_FOUND) {
+ nonfatal("Unable to delete '%s': %s", path,
+ win_strerror(GetLastError()));
+ }
+ *ret = INVALID_HANDLE_VALUE;
+ return FALSE; /* so we'll do the next ones too */
+ }
+
+ *ret = CreateFile(path,
+ action == OPEN_W ? GENERIC_WRITE : GENERIC_READ,
+ action == OPEN_W ? 0 : (FILE_SHARE_READ |
+ FILE_SHARE_WRITE),
+ NULL,
+ action == OPEN_W ? CREATE_ALWAYS : OPEN_EXISTING,
+ action == OPEN_W ? FILE_ATTRIBUTE_NORMAL : 0,
+ NULL);
+
+ return (*ret != INVALID_HANDLE_VALUE);
+}
+
+static HANDLE access_random_seed(int action)
+{
+ HKEY rkey;
+ DWORD type, size;
+ HANDLE rethandle;
+ char seedpath[2 * MAX_PATH + 10] = "\0";
+
+ /*
+ * Iterate over a selection of possible random seed paths until
+ * we find one that works.
+ *
+ * We do this iteration separately for reading and writing,
+ * meaning that we will automatically migrate random seed files
+ * if a better location becomes available (by reading from the
+ * best location in which we actually find one, and then
+ * writing to the best location in which we can _create_ one).
+ */
+
+ /*
+ * First, try the location specified by the user in the
+ * Registry, if any.
+ */
+ size = sizeof(seedpath);
+ if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) ==
+ ERROR_SUCCESS) {
+ int ret = RegQueryValueEx(rkey, "RandSeedFile",
+ 0, &type, seedpath, &size);
+ if (ret != ERROR_SUCCESS || type != REG_SZ)
+ seedpath[0] = '\0';
+ RegCloseKey(rkey);
+
+ if (*seedpath && try_random_seed(seedpath, action, &rethandle))
+ return rethandle;
+ }
+
+ /*
+ * Next, try the user's local Application Data directory,
+ * followed by their non-local one. This is found using the
+ * SHGetFolderPath function, which won't be present on all
+ * versions of Windows.
+ */
+ if (!tried_shgetfolderpath) {
+ /* This is likely only to bear fruit on systems with IE5+
+ * installed, or WinMe/2K+. There is some faffing with
+ * SHFOLDER.DLL we could do to try to find an equivalent
+ * on older versions of Windows if we cared enough.
+ * However, the invocation below requires IE5+ anyway,
+ * so stuff that. */
+ shell32_module = load_system32_dll("shell32.dll");
+ GET_WINDOWS_FUNCTION(shell32_module, SHGetFolderPathA);
+ tried_shgetfolderpath = TRUE;
+ }
+ if (p_SHGetFolderPathA) {
+ if (SUCCEEDED(p_SHGetFolderPathA(NULL, CSIDL_LOCAL_APPDATA,
+ NULL, SHGFP_TYPE_CURRENT, seedpath))) {
+ strcat(seedpath, "\\PUTTY.RND");
+ if (try_random_seed(seedpath, action, &rethandle))
+ return rethandle;
+ }
+
+ if (SUCCEEDED(p_SHGetFolderPathA(NULL, CSIDL_APPDATA,
+ NULL, SHGFP_TYPE_CURRENT, seedpath))) {
+ strcat(seedpath, "\\PUTTY.RND");
+ if (try_random_seed(seedpath, action, &rethandle))
+ return rethandle;
+ }
+ }
+
+ /*
+ * Failing that, try %HOMEDRIVE%%HOMEPATH% as a guess at the
+ * user's home directory.
+ */
+ {
+ int len, ret;
+
+ len =
+ GetEnvironmentVariable("HOMEDRIVE", seedpath,
+ sizeof(seedpath));
+ ret =
+ GetEnvironmentVariable("HOMEPATH", seedpath + len,
+ sizeof(seedpath) - len);
+ if (ret != 0) {
+ strcat(seedpath, "\\PUTTY.RND");
+ if (try_random_seed(seedpath, action, &rethandle))
+ return rethandle;
+ }
+ }
+
+ /*
+ * And finally, fall back to C:\WINDOWS.
+ */
+ GetWindowsDirectory(seedpath, sizeof(seedpath));
+ strcat(seedpath, "\\PUTTY.RND");
+ if (try_random_seed(seedpath, action, &rethandle))
+ return rethandle;
+
+ /*
+ * If even that failed, give up.
+ */
+ return INVALID_HANDLE_VALUE;
+}
+
+void read_random_seed(noise_consumer_t consumer)
+{
+ HANDLE seedf = access_random_seed(OPEN_R);
+
+ if (seedf != INVALID_HANDLE_VALUE) {
+ while (1) {
+ char buf[1024];
+ DWORD len;
+
+ if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len)
+ consumer(buf, len);
+ else
+ break;
+ }
+ CloseHandle(seedf);
+ }
+}
+
+void write_random_seed(void *data, int len)
+{
+ HANDLE seedf = access_random_seed(OPEN_W);
+
+ if (seedf != INVALID_HANDLE_VALUE) {
+ DWORD lenwritten;
+
+ WriteFile(seedf, data, len, &lenwritten, NULL);
+ CloseHandle(seedf);
+ }
+}
+
+/*
+ * Internal function supporting the jump list registry code. All the
+ * functions to add, remove and read the list have substantially
+ * similar content, so this is a generalisation of all of them which
+ * transforms the list in the registry by prepending 'add' (if
+ * non-null), removing 'rem' from what's left (if non-null), and
+ * returning the resulting concatenated list of strings in 'out' (if
+ * non-null).
+ */
+static int transform_jumplist_registry
+ (const char *add, const char *rem, char **out)
+{
+ int ret;
+ HKEY pjumplist_key, psettings_tmp;
+ DWORD type;
+ int value_length;
+ char *old_value, *new_value;
+ char *piterator_old, *piterator_new, *piterator_tmp;
+
+ ret = RegCreateKeyEx(HKEY_CURRENT_USER, reg_jumplist_key, 0, NULL,
+ REG_OPTION_NON_VOLATILE, (KEY_READ | KEY_WRITE), NULL,
+ &pjumplist_key, NULL);
+ if (ret != ERROR_SUCCESS) {
+ return JUMPLISTREG_ERROR_KEYOPENCREATE_FAILURE;
+ }
+
+ /* Get current list of saved sessions in the registry. */
+ value_length = 200;
+ old_value = snewn(value_length, char);
+ ret = RegQueryValueEx(pjumplist_key, reg_jumplist_value, NULL, &type,
+ old_value, &value_length);
+ /* When the passed buffer is too small, ERROR_MORE_DATA is
+ * returned and the required size is returned in the length
+ * argument. */
+ if (ret == ERROR_MORE_DATA) {
+ sfree(old_value);
+ old_value = snewn(value_length, char);
+ ret = RegQueryValueEx(pjumplist_key, reg_jumplist_value, NULL, &type,
+ old_value, &value_length);
+ }
+
+ if (ret == ERROR_FILE_NOT_FOUND) {
+ /* Value doesn't exist yet. Start from an empty value. */
+ *old_value = '\0';
+ *(old_value + 1) = '\0';
+ } else if (ret != ERROR_SUCCESS) {
+ /* Some non-recoverable error occurred. */
+ sfree(old_value);
+ RegCloseKey(pjumplist_key);
+ return JUMPLISTREG_ERROR_VALUEREAD_FAILURE;
+ } else if (type != REG_MULTI_SZ) {
+ /* The value present in the registry has the wrong type: we
+ * try to delete it and start from an empty value. */
+ ret = RegDeleteValue(pjumplist_key, reg_jumplist_value);
+ if (ret != ERROR_SUCCESS) {
+ sfree(old_value);
+ RegCloseKey(pjumplist_key);
+ return JUMPLISTREG_ERROR_VALUEREAD_FAILURE;
+ }
+
+ *old_value = '\0';
+ *(old_value + 1) = '\0';
+ }
+
+ /* Check validity of registry data: REG_MULTI_SZ value must end
+ * with \0\0. */
+ piterator_tmp = old_value;
+ while (((piterator_tmp - old_value) < (value_length - 1)) &&
+ !(*piterator_tmp == '\0' && *(piterator_tmp+1) == '\0')) {
+ ++piterator_tmp;
+ }
+
+ if ((piterator_tmp - old_value) >= (value_length-1)) {
+ /* Invalid value. Start from an empty value. */
+ *old_value = '\0';
+ *(old_value + 1) = '\0';
+ }
+
+ /*
+ * Modify the list, if we're modifying.
+ */
+ if (add || rem) {
+ /* Walk through the existing list and construct the new list of
+ * saved sessions. */
+ new_value = snewn(value_length + (add ? strlen(add) + 1 : 0), char);
+ piterator_new = new_value;
+ piterator_old = old_value;
+
+ /* First add the new item to the beginning of the list. */
+ if (add) {
+ strcpy(piterator_new, add);
+ piterator_new += strlen(piterator_new) + 1;
+ }
+ /* Now add the existing list, taking care to leave out the removed
+ * item, if it was already in the existing list. */
+ while (*piterator_old != '\0') {
+ if (!rem || strcmp(piterator_old, rem) != 0) {
+ /* Check if this is a valid session, otherwise don't add. */
+ psettings_tmp = open_settings_r(piterator_old);
+ if (psettings_tmp != NULL) {
+ close_settings_r(psettings_tmp);
+ strcpy(piterator_new, piterator_old);
+ piterator_new += strlen(piterator_new) + 1;
+ }
+ }
+ piterator_old += strlen(piterator_old) + 1;
+ }
+ *piterator_new = '\0';
+ ++piterator_new;
+
+ /* Save the new list to the registry. */
+ ret = RegSetValueEx(pjumplist_key, reg_jumplist_value, 0, REG_MULTI_SZ,
+ new_value, piterator_new - new_value);
+
+ sfree(old_value);
+ old_value = new_value;
+ } else
+ ret = ERROR_SUCCESS;
+
+ /*
+ * Either return or free the result.
+ */
+ if (out && ret == ERROR_SUCCESS)
+ *out = old_value;
+ else
+ sfree(old_value);
+
+ /* Clean up and return. */
+ RegCloseKey(pjumplist_key);
+
+ if (ret != ERROR_SUCCESS) {
+ return JUMPLISTREG_ERROR_VALUEWRITE_FAILURE;
+ } else {
+ return JUMPLISTREG_OK;
+ }
+}
+
+/* Adds a new entry to the jumplist entries in the registry. */
+int add_to_jumplist_registry(const char *item)
+{
+ return transform_jumplist_registry(item, item, NULL);
+}
+
+/* Removes an item from the jumplist entries in the registry. */
+int remove_from_jumplist_registry(const char *item)
+{
+ return transform_jumplist_registry(NULL, item, NULL);
+}
+
+/* Returns the jumplist entries from the registry. Caller must free
+ * the returned pointer. */
+char *get_jumplist_registry_entries (void)
+{
+ char *list_value;
+
+ if (transform_jumplist_registry(NULL,NULL,&list_value) != JUMPLISTREG_OK) {
+ list_value = snewn(2, char);
+ *list_value = '\0';
+ *(list_value + 1) = '\0';
+ }
+ return list_value;
+}
+
+/*
+ * Recursively delete a registry key and everything under it.
+ */
+static void registry_recursive_remove(HKEY key)
+{
+ DWORD i;
+ char name[MAX_PATH + 1];
+ HKEY subkey;
+
+ i = 0;
+ while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) {
+ if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) {
+ registry_recursive_remove(subkey);
+ RegCloseKey(subkey);
+ }
+ RegDeleteKey(key, name);
+ }
+}
+
+void cleanup_all(void)
+{
+ HKEY key;
+ int ret;
+ char name[MAX_PATH + 1];
+
+ /* ------------------------------------------------------------
+ * Wipe out the random seed file, in all of its possible
+ * locations.
+ */
+ access_random_seed(DEL);
+
+ /* ------------------------------------------------------------
+ * Ask Windows to delete any jump list information associated
+ * with this installation of PuTTY.
+ */
+ clear_jumplist();
+
+ /* ------------------------------------------------------------
+ * Destroy all registry information associated with PuTTY.
+ */
+
+ /*
+ * Open the main PuTTY registry key and remove everything in it.
+ */
+ if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) ==
+ ERROR_SUCCESS) {
+ registry_recursive_remove(key);
+ RegCloseKey(key);
+ }
+ /*
+ * Now open the parent key and remove the PuTTY main key. Once
+ * we've done that, see if the parent key has any other
+ * children.
+ */
+ if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT,
+ &key) == ERROR_SUCCESS) {
+ RegDeleteKey(key, PUTTY_REG_PARENT_CHILD);
+ ret = RegEnumKey(key, 0, name, sizeof(name));
+ RegCloseKey(key);
+ /*
+ * If the parent key had no other children, we must delete
+ * it in its turn. That means opening the _grandparent_
+ * key.
+ */
+ if (ret != ERROR_SUCCESS) {
+ if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT,
+ &key) == ERROR_SUCCESS) {
+ RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD);
+ RegCloseKey(key);
+ }
+ }
+ }
+ /*
+ * Now we're done.
+ */
+}