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f39c51f9a7
This gets rid of all those annoying 'win', 'ux' and 'gtk' prefixes which made filenames annoying to type and to tab-complete. Also, as with my other recent renaming sprees, I've taken the opportunity to expand and clarify some of the names so that they're not such cryptic abbreviations.
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/*
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* Windows support module which deals with being a named-pipe client.
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*/
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#include <stdio.h>
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#include <assert.h>
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#include "tree234.h"
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#include "putty.h"
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#include "network.h"
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#include "proxy.h"
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#include "ssh.h"
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#include "security-api.h"
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HANDLE connect_to_named_pipe(const char *pipename, char **err)
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{
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HANDLE pipehandle;
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PSID usersid, pipeowner;
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PSECURITY_DESCRIPTOR psd;
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assert(strncmp(pipename, "\\\\.\\pipe\\", 9) == 0);
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assert(strchr(pipename + 9, '\\') == NULL);
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while (1) {
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pipehandle = CreateFile(pipename, GENERIC_READ | GENERIC_WRITE,
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0, NULL, OPEN_EXISTING,
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FILE_FLAG_OVERLAPPED, NULL);
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if (pipehandle != INVALID_HANDLE_VALUE)
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break;
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if (GetLastError() != ERROR_PIPE_BUSY) {
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*err = dupprintf(
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"Unable to open named pipe '%s': %s",
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pipename, win_strerror(GetLastError()));
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return INVALID_HANDLE_VALUE;
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}
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/*
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* If we got ERROR_PIPE_BUSY, wait for the server to
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* create a new pipe instance. (Since the server is
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* expected to be winnps.c, which will do that immediately
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* after a previous connection is accepted, that shouldn't
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* take excessively long.)
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*/
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if (!WaitNamedPipe(pipename, NMPWAIT_USE_DEFAULT_WAIT)) {
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*err = dupprintf(
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"Error waiting for named pipe '%s': %s",
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pipename, win_strerror(GetLastError()));
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return INVALID_HANDLE_VALUE;
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}
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}
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if ((usersid = get_user_sid()) == NULL) {
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CloseHandle(pipehandle);
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*err = dupprintf(
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"Unable to get user SID: %s", win_strerror(GetLastError()));
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return INVALID_HANDLE_VALUE;
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}
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if (p_GetSecurityInfo(pipehandle, SE_KERNEL_OBJECT,
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OWNER_SECURITY_INFORMATION,
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&pipeowner, NULL, NULL, NULL,
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&psd) != ERROR_SUCCESS) {
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CloseHandle(pipehandle);
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*err = dupprintf(
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"Unable to get named pipe security information: %s",
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win_strerror(GetLastError()));
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return INVALID_HANDLE_VALUE;
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}
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if (!EqualSid(pipeowner, usersid)) {
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CloseHandle(pipehandle);
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LocalFree(psd);
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*err = dupprintf(
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"Owner of named pipe '%s' is not us", pipename);
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return INVALID_HANDLE_VALUE;
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}
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LocalFree(psd);
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return pipehandle;
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}
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Socket *new_named_pipe_client(const char *pipename, Plug *plug)
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{
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char *err = NULL;
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HANDLE pipehandle = connect_to_named_pipe(pipename, &err);
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if (pipehandle == INVALID_HANDLE_VALUE)
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return new_error_socket_consume_string(plug, err);
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else
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return make_handle_socket(pipehandle, pipehandle, NULL, plug, true);
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}
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