diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/nxagent/Error.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/nxagent/Error.c | 636 |
1 files changed, 636 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Error.c b/nx-X11/programs/Xserver/hw/nxagent/Error.c new file mode 100644 index 000000000..43bf85900 --- /dev/null +++ b/nx-X11/programs/Xserver/hw/nxagent/Error.c @@ -0,0 +1,636 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/. */ +/* */ +/* NXAGENT, NX protocol compression and NX extensions to this software */ +/* are copyright of NoMachine. Redistribution and use of the present */ +/* software is allowed according to terms specified in the file LICENSE */ +/* which comes in the source distribution. */ +/* */ +/* Check http://www.nomachine.com/licensing.html for applicability. */ +/* */ +/* NX and NoMachine are trademarks of Medialogic S.p.A. */ +/* */ +/* All rights reserved. */ +/* */ +/**************************************************************************/ + +#include <stdio.h> +#include <string.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> +#include <unistd.h> + +#include "os.h" + +#include "scrnintstr.h" +#include "Agent.h" + +#include "Xlib.h" +#include "Xproto.h" + +#include "Error.h" +#include "Args.h" + +/* + * Set here the required log level. + */ + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG + + +/* + * Duplicated stderr file descriptor. + */ + +static int nxagentStderrDup = -1; + +/* + * Saved stderr file descriptor. + */ + +static int nxagentStderrBackup = -1; + +/* + * Clients log file descriptor. + */ + +static int nxagentClientsLog = -1; + +#define DEFAULT_STRING_LENGTH 256 + + +/* + * Clients log file name. + */ + +char nxagentClientsLogName[DEFAULT_STRING_LENGTH] = { 0 }; + +/* + * User's home. + */ + +static char nxagentHomeDir[DEFAULT_STRING_LENGTH] = { 0 }; + +/* + * NX root directory. + */ + +static char nxagentRootDir[DEFAULT_STRING_LENGTH] = { 0 }; + +/* + * Session log Directory. + */ + +static char nxagentSessionDir[DEFAULT_STRING_LENGTH] = { 0 }; + +char *nxagentGetClientsPath(void); + +static int nxagentPrintError(Display *dpy, XErrorEvent *event, FILE *fp); + +/* declare an error handler that does not exit when an error + * event is catched. + */ + +int nxagentErrorHandler(Display *dpy, XErrorEvent *event) +{ + if (nxagentVerbose == 1) + { + nxagentPrintError(dpy, event, stderr); + } + + return 0; +} + +/* copied from XlibInt.c */ +/* extension stuff roughly commented out */ +static int nxagentPrintError(dpy, event, fp) + Display *dpy; + XErrorEvent *event; + FILE *fp; +{ + char buffer[BUFSIZ]; + char mesg[BUFSIZ]; + char number[32]; + char *mtype = "XlibMessage"; + /* + register _XExtension *ext = (_XExtension *)NULL; + _XExtension *bext = (_XExtension *)NULL; + */ + XGetErrorText(dpy, event->error_code, buffer, BUFSIZ); + XGetErrorDatabaseText(dpy, mtype, "XError", "X Error", mesg, BUFSIZ); + (void) fprintf(fp, "%s: %s\n ", mesg, buffer); + XGetErrorDatabaseText(dpy, mtype, "MajorCode", "Request Major code %d", + mesg, BUFSIZ); + (void) fprintf(fp, mesg, event->request_code); + if (event->request_code < 128) { + sprintf(number, "%d", event->request_code); + XGetErrorDatabaseText(dpy, "XRequest", number, "", buffer, BUFSIZ); + } else { + /* for (ext = dpy->ext_procs; + ext && (ext->codes.major_opcode != event->request_code); + ext = ext->next) + ; + if (ext) + strcpy(buffer, ext->name); + else + */ + buffer[0] = '\0'; + } + (void) fprintf(fp, " (%s)\n", buffer); + if (event->request_code >= 128) { + XGetErrorDatabaseText(dpy, mtype, "MinorCode", "Request Minor code %d", + mesg, BUFSIZ); + fputs(" ", fp); + (void) fprintf(fp, mesg, event->minor_code); + /* + if (ext) { + sprintf(mesg, "%s.%d", ext->name, event->minor_code); + XGetErrorDatabaseText(dpy, "XRequest", mesg, "", buffer, BUFSIZ); + (void) fprintf(fp, " (%s)", buffer); + } + */ + fputs("\n", fp); + } + if (event->error_code >= 128) { + /* kludge, try to find the extension that caused it */ + buffer[0] = '\0'; + /* + for (ext = dpy->ext_procs; ext; ext = ext->next) { + if (ext->error_string) + (*ext->error_string)(dpy, event->error_code, &ext->codes, + buffer, BUFSIZ); + if (buffer[0]) { + bext = ext; + break; + } + if (ext->codes.first_error && + ext->codes.first_error < (int)event->error_code && + (!bext || ext->codes.first_error > bext->codes.first_error)) + bext = ext; + } + if (bext) + sprintf(buffer, "%s.%d", bext->name, + event->error_code - bext->codes.first_error); + else + */ + strcpy(buffer, "Value"); + XGetErrorDatabaseText(dpy, mtype, buffer, "", mesg, BUFSIZ); + if (mesg[0]) { + fputs(" ", fp); + (void) fprintf(fp, mesg, event->resourceid); + fputs("\n", fp); + } + /* let extensions try to print the values */ + /* + for (ext = dpy->ext_procs; ext; ext = ext->next) { + if (ext->error_values) + (*ext->error_values)(dpy, event, fp); + } + */ + } else if ((event->error_code == BadWindow) || + (event->error_code == BadPixmap) || + (event->error_code == BadCursor) || + (event->error_code == BadFont) || + (event->error_code == BadDrawable) || + (event->error_code == BadColor) || + (event->error_code == BadGC) || + (event->error_code == BadIDChoice) || + (event->error_code == BadValue) || + (event->error_code == BadAtom)) { + if (event->error_code == BadValue) + XGetErrorDatabaseText(dpy, mtype, "Value", "Value 0x%x", + mesg, BUFSIZ); + else if (event->error_code == BadAtom) + XGetErrorDatabaseText(dpy, mtype, "AtomID", "AtomID 0x%x", + mesg, BUFSIZ); + else + XGetErrorDatabaseText(dpy, mtype, "ResourceID", "ResourceID 0x%x", + mesg, BUFSIZ); + fputs(" ", fp); + (void) fprintf(fp, mesg, event->resourceid); + fputs("\n", fp); + } + XGetErrorDatabaseText(dpy, mtype, "ErrorSerial", "Error Serial #%d", + mesg, BUFSIZ); + fputs(" ", fp); + (void) fprintf(fp, mesg, event->serial); + XGetErrorDatabaseText(dpy, mtype, "CurrentSerial", "Current Serial #%d", + mesg, BUFSIZ); + fputs("\n ", fp); + /* (void) fprintf(fp, mesg, dpy->request); */ + fputs("\n", fp); + if (event->error_code == BadImplementation) return 0; + return 1; +} + +int nxagentExitHandler(const char *message) +{ + FatalError(message); + + return 0; +} + +void nxagentOpenClientsLogFile() +{ + char * clientsLogName; + + if (*nxagentClientsLogName == '\0') + { + clientsLogName = nxagentGetClientsPath(); + + if (clientsLogName != NULL) + { + free(clientsLogName); + } + } + + if (nxagentClientsLogName != NULL && *nxagentClientsLogName !='\0') + { + nxagentClientsLog = open(nxagentClientsLogName, O_RDWR | O_CREAT | O_APPEND, 0600); + + if (nxagentClientsLog == -1) + { + fprintf(stderr, "Warning: Failed to open clients log. Error is %d '%s'.\n", + errno, strerror(errno)); + } + } + else + { + #ifdef TEST + fprintf(stderr, "nxagentOpenClientsLogFile: Cannot open clients log file. The path does not exist.\n"); + #endif + } +} + +void nxagentCloseClientsLogFile(void) +{ + close(nxagentClientsLog); +} + +void nxagentStartRedirectToClientsLog(void) +{ + nxagentOpenClientsLogFile(); + + if (nxagentClientsLog != -1) + { + if (nxagentStderrBackup == -1) + { + nxagentStderrBackup = dup(2); + } + + if (nxagentStderrBackup != -1) + { + nxagentStderrDup = dup2(nxagentClientsLog, 2); + + if (nxagentStderrDup == -1) + { + fprintf(stderr, "Warning: Failed to redirect stderr. Error is %d '%s'.\n", + errno, strerror(errno)); + } + } + else + { + fprintf(stderr, "Warning: Failed to backup stderr. Error is %d '%s'.\n", + errno, strerror(errno)); + } + } +} + +void nxagentEndRedirectToClientsLog(void) +{ + if (nxagentStderrBackup != -1) + { + nxagentStderrDup = dup2(nxagentStderrBackup, 2); + + if (nxagentStderrDup == -1) + { + fprintf(stderr, "Warning: Failed to restore stderr. Error is %d '%s'.\n", + errno, strerror(errno)); + } + } + + nxagentCloseClientsLogFile(); +} + +char *nxagentGetHomePath(void) +{ + char *homeEnv; + char *homePath; + + if (*nxagentHomeDir == '\0') + { + /* + * Check the NX_HOME environment. + */ + + homeEnv = getenv("NX_HOME"); + + if (homeEnv == NULL || *homeEnv == '\0') + { + #ifdef TEST + fprintf(stderr, "nxagentGetHomePath: No environment for NX_HOME.\n"); + #endif + + homeEnv = getenv("HOME"); + + if (homeEnv == NULL || *homeEnv == '\0') + { + #ifdef PANIC + fprintf(stderr, "nxagentGetHomePath: PANIC! No environment for HOME.\n"); + #endif + + return NULL; + } + } + + if (strlen(homeEnv) > DEFAULT_STRING_LENGTH - 1) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetHomePath: PANIC! Invalid value for the NX " + "home directory '%s'.\n", homeEnv); + #endif + } + + strncpy(nxagentHomeDir, homeEnv, DEFAULT_STRING_LENGTH - 1); + + #ifdef TEST + fprintf(stderr, "nxagentGetHomePath: Assuming NX user's home directory '%s'.\n", nxagentHomeDir); + #endif + } + + homePath = (char*) malloc(strlen(nxagentHomeDir) + 1); + + if (homePath == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetHomePath: PANIC! Can't allocate memory for the home path.\n"); + #endif + + return NULL; + } + + strcpy(homePath, nxagentHomeDir); + + return homePath; +} + +char *nxagentGetRootPath(void) +{ + char *rootEnv; + char *homeEnv; + char *rootPath; + + struct stat dirStat; + + if (*nxagentRootDir == '\0') + { + /* + * Check the NX_ROOT environment. + */ + + rootEnv = getenv("NX_ROOT"); + + if (rootEnv == NULL || *rootEnv == '\0') + { + #ifdef TEST + fprintf(stderr, "nxagentGetRootPath: WARNING! No environment for NX_ROOT.\n"); + #endif + + /* + * We will determine the root NX directory + * based on the NX_HOME or HOME directory + * settings. + */ + + homeEnv = nxagentGetHomePath(); + + if (homeEnv == NULL) + { + + #ifdef PANIC + #endif + + return NULL; + } + + if (strlen(homeEnv) > DEFAULT_STRING_LENGTH - + strlen("/.nx") - 1) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetRootPath: PANIC! Invalid value for the NX " + "home directory '%s'.\n", homeEnv); + #endif + + free(homeEnv); + + return NULL; + } + + #ifdef TEST + fprintf(stderr, "nxagentGetRootPath: Assuming NX root directory in '%s'.\n", homeEnv); + #endif + + strcpy(nxagentRootDir, homeEnv); + strcat(nxagentRootDir, "/.nx"); + + free(homeEnv); + + /* + * Create the NX root directory. + */ + + if ((stat(nxagentRootDir, &dirStat) == -1) && (errno == ENOENT)) + { + if (mkdir(nxagentRootDir, 0777) < 0 && (errno != EEXIST)) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetRootPath: PANIC! Can't create directory '%s'. Error is %d '%s'.\n", + nxagentRootDir, errno, strerror(errno)); + #endif + + return NULL; + } + } + } + else + { + if (strlen(rootEnv) > DEFAULT_STRING_LENGTH - 1) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetRootPath: PANIC! Invalid value for the NX root directory '%s'.\n", + rootEnv); + #endif + + return NULL; + } + + strcpy(nxagentRootDir, rootEnv); + } + + #ifdef TEST + fprintf(stderr, "nxagentGetRootPath: Assuming NX root directory '%s'.\n", + nxagentRootDir); + #endif + + } + + rootPath = malloc(strlen(nxagentRootDir) + 1); + + if (rootPath == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetRootPath: Can't allocate memory for the root path.\n"); + #endif + + return NULL; + } + + strcpy(rootPath, nxagentRootDir); + + return rootPath; +} + +char *nxagentGetSessionPath() +{ + + char *rootPath; + char *sessionPath; + + struct stat dirStat; + + if (*nxagentSessionDir == '\0') + { + /* + * If nxagentSessionId does not exist we + * assume that the sessionPath cannot be + * realized and do not use the clients + * log file. + */ + + if (*nxagentSessionId == '\0') + { + #ifdef TEST + fprintf(stderr, "nxagentGetSessionPath: Session id does not exist. Assuming session path NULL.\n"); + #endif + + return NULL; + } + + rootPath = nxagentGetRootPath(); + + if (rootPath == NULL) + { + return NULL; + } + + strcpy(nxagentSessionDir, rootPath); + + free(rootPath); + + if (strlen(nxagentSessionDir) + strlen("/C-") + strlen(nxagentSessionId) > DEFAULT_STRING_LENGTH - 1) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetSessionPath: PANIC!: Invalid value for the NX session directory '%s'.\n", + nxagentSessionDir); + #endif + + return NULL; + } + + strcat(nxagentSessionDir, "/C-"); + + strcat(nxagentSessionDir, nxagentSessionId); + + if ((stat(nxagentSessionDir, &dirStat) == -1) && (errno == ENOENT)) + { + if (mkdir(nxagentSessionDir, 0777) < 0 && (errno != EEXIST)) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetSessionPath: PANIC! Can't create directory '%s'. Error is %d '%s'.\n", + nxagentSessionDir, errno, strerror(errno)); + #endif + + return NULL; + } + } + + #ifdef TEST + fprintf(stderr, "nxagentGetSessionPath: NX session is '%s'.\n", + nxagentSessionDir); + #endif + + } + + sessionPath = malloc(strlen(nxagentSessionDir) + 1); + + if (sessionPath == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetSessionPath:: PANIC! Can't allocate memory for the session path.\n"); + #endif + + return NULL; + } + + + strcpy(sessionPath, nxagentSessionDir); + + return sessionPath; +} + +char *nxagentGetClientsPath() +{ + char *sessionPath; + char *clientsPath; + + if (*nxagentClientsLogName == '\0') + { + sessionPath = nxagentGetSessionPath(); + + if (sessionPath == NULL) + { + return NULL; + } + + if (strlen(sessionPath) + strlen("/clients") > DEFAULT_STRING_LENGTH - 1) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetClientsPath: PANIC! Invalid value for the NX clients Log File Path '%s'.\n", + nxagentClientsLogName); + #endif + + free(sessionPath); + + return NULL; + } + + strcpy(nxagentClientsLogName, sessionPath); + + strcat(nxagentClientsLogName, "/clients"); + + free(sessionPath); + } + + clientsPath = malloc(strlen(nxagentClientsLogName) + 1); + + if (clientsPath == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentGetClientsPath: PANIC! Can't allocate memory for the clients Log File Path path.\n"); + #endif + + return NULL; + } + + strcpy(clientsPath, nxagentClientsLogName); + + return clientsPath; +} + |