C++ pstrcat函数代码示例

static int match_version(pool *p, const char *pattern_str, char **error) {
#ifdef PR_USE_REGEX
  pr_regex_t *pre;
  int res;

  pre = pr_regexp_alloc(&ifversion_module);

  res = pr_regexp_compile(pre, pattern_str, REG_EXTENDED|REG_NOSUB|REG_ICASE);
  if (res != 0) {
    char errstr[256];

    memset(errstr, '\0', sizeof(errstr));
    pr_regexp_error(res, pre, errstr, sizeof(errstr)-1);

    pr_regexp_free(NULL, pre);
    *error = pstrcat(p, "unable to compile pattern '", pattern_str, "': ",
      errstr, NULL);

    return 0;
  }

  res = pr_regexp_exec(pre, pr_version_get_str(), 0, NULL, 0, 0, 0);
  if (res != 0) {
    *error = pstrcat(p, "server version '", pr_version_get_str(),
      "' failed to match pattern '", pattern_str, "'", NULL);
  }

  pr_regexp_free(NULL, pre);
  return (res == 0 ? 1 : 0);

#else
  *error = pstrdup(p, "system does not support POSIX regular expressions");
  return 0;
#endif /* regex support */
}

/* usage: ModulePath path */
MODRET set_modulepath(cmd_rec *cmd) {
  int res;
  struct stat st;

  CHECK_ARGS(cmd, 1);
  CHECK_CONF(cmd, CONF_ROOT);

  if (pr_fs_valid_path(cmd->argv[1]) < 0)
    CONF_ERROR(cmd, "must be an absolute path");

  /* Make sure that the configured path is not world-writeable. */
  res = pr_fsio_stat(cmd->argv[1], &st);
  if (res < 0)
    CONF_ERROR(cmd, pstrcat(cmd->tmp_pool, "error checking '",
      cmd->argv[1], "': ", strerror(errno), NULL)); 

  if (!S_ISDIR(st.st_mode))
    CONF_ERROR(cmd, pstrcat(cmd->tmp_pool, cmd->argv[1], " is not a directory",
      NULL));

  if (st.st_mode & S_IWOTH)
    CONF_ERROR(cmd, pstrcat(cmd->tmp_pool, cmd->argv[1], " is world-writable",
      NULL));

  if (lt_dlsetsearchpath(cmd->argv[1]) < 0)
    CONF_ERROR(cmd, pstrcat(cmd->tmp_pool, "error setting module path: ",
      lt_dlerror(), NULL));

  dso_module_path = pstrdup(dso_pool, cmd->argv[1]);
  return PR_HANDLED(cmd);
}

static char *myfgets(char *s, int n, FILE *stream)
{
    char *LString1;
    char *LString2;
    char *temp;
    pstring String;
    pstring NewString;
    int i;

    fgets(s,n,stream);
    while ((LString1 = strchr(s,'%')) != NULL) {
        if (!(LString2 = strchr(LString1+1,'%'))) break;
        *LString2 = '\0';
        pstrcpy(String,LString1+1);
        i = 0;
        while(*sbuffer[i]!='\0') {
            if (strncmp(sbuffer[i],String,strlen(String))==0)
            {
                pstrcpy(String,sbuffer[i]);
                if ((temp = strchr(String,'=')) != NULL) ++temp;
                pstrcpy(String,temp);
                break;
            }
            i++;
        }
        *LString1 = '\0';
        pstrcpy(NewString,s);
        pstrcat(NewString,String);
        pstrcat(NewString,LString2+1);
        pstrcpy(s, NewString);
    }
    return(s);
}

static void do_tar(file_info *finfo)
{
	pstring rname;

	if (strequal(finfo->name,"..") || strequal(finfo->name,"."))
		return;

	/* Is it on the exclude list ? */
	if (!tar_excl && clipn) {
		pstring exclaim;

		DEBUG(5, ("Excl: strlen(cur_dir) = %d\n", (int)strlen(cur_dir)));

		pstrcpy(exclaim, cur_dir);
		*(exclaim+strlen(exclaim)-1)='\0';

		pstrcat(exclaim, "\\");
		pstrcat(exclaim, finfo->name);

		DEBUG(5, ("...tar_re_search: %d\n", tar_re_search));

		if ((!tar_re_search && clipfind(cliplist, clipn, exclaim)) ||
#ifdef HAVE_REGEX_H
				(tar_re_search && !regexec(preg, exclaim, 0, NULL, 0))) {
#else
				(tar_re_search && mask_match_list(exclaim, cliplist, clipn, True))) {
#endif
			DEBUG(3,("Skipping file %s\n", exclaim));
			return;
		}
	}

/* If the path has the home directory in it, replace it with a tilde. */
int tilde_expand(char *buf, int buf_size, const char *path1)
{
    char path[MAX_FILENAME_SIZE];
    char *homedir;
    int ret = 0;
    if (!is_abs_path(path1)) {
        if (*path1 == '~') {
            if (path1[1] == '\0' || path1[1] == '/') {
                homedir = getenv("HOME");
                if (homedir) {
                    pstrcpy(path, sizeof(path), homedir);
#ifdef CONFIG_WIN32
                    path_win_to_unix(path);
#endif
                    remove_slash(path);
                    pstrcat(path, sizeof(path), path1 + 1);
                    path1 = path;
                }
            } else {
                /* CG: should get info from getpwnam */
                pstrcpy(path, sizeof(path), "/home/");
                pstrcat(path, sizeof(path), path1 + 1);
                path1 = path;
            }
            ret = 1;
        }
    }
    pstrcpy(buf, buf_size, path1);
    return ret;
}

static const char *describe_eacces_file(pool *p, const char *path, int flags) {
  if (flags & EXPLAIN_PATH_FL_WANT_SEARCH) {
    return pstrcat(p, "file '", path, "' is not searchable by the user", NULL);
  }

  return pstrcat(p, "directory containing '", path,
    "' is not writable by the user", NULL);
}

/****************************************************************************
Build the print command in the supplied buffer. This means getting the
print command for the service and inserting the printer name and the
print file name. Return NULL on error, else the passed buffer pointer.
****************************************************************************/
static char *build_print_command(int cnum, char *command, char *syscmd, char *filename1)
{
  int snum = SNUM(cnum);
  char *tstr;
  pstring filename;
  
  /* get the print command for the service. */
  tstr = command;
  if (!syscmd || !tstr) {
    DEBUG(0,("No print command for service `%s'\n", SERVICE(snum)));
    return (NULL);
  }

  /* copy the command into the buffer for extensive meddling. */
  StrnCpy(syscmd, tstr, sizeof(pstring) - 1);
  
  /* look for "%s" in the string. If there is no %s, we cannot print. */   
  if (!strstr(syscmd, "%s") && !strstr(syscmd, "%f")) {
    DEBUG(2,("WARNING! No placeholder for the filename in the print command for service %s!\n", SERVICE(snum)));
  }
  
  if (strstr(syscmd,"%s")) {
    int iOffset = PTR_DIFF(strstr(syscmd, "%s"),syscmd);
    
    /* construct the full path for the filename, shouldn't be necessary unless
       the subshell causes a "cd" to be executed.
       Only use the full path if there isn't a / preceding the %s */
    if (iOffset==0 || syscmd[iOffset-1] != '/') {
      StrnCpy(filename,Connections[cnum].connectpath,sizeof(filename)-1);
      trim_string(filename,"","/");
      pstrcat(filename,"/");
      pstrcat(filename,filename1);
    }
    else
      pstrcpy(filename,filename1);
    
    string_sub(syscmd, "%s", filename);
  }
  
  string_sub(syscmd, "%f", filename1);
  
  /* Does the service have a printername? If not, make a fake and empty    */
  /* printer name. That way a %p is treated sanely if no printer */
  /* name was specified to replace it. This eventuality is logged.         */
  tstr = PRINTERNAME(snum);
  if (tstr == NULL || tstr[0] == '\0') {
    DEBUG(3,( "No printer name - using %s.\n", SERVICE(snum)));
    tstr = SERVICE(snum);
  }
  
  string_sub(syscmd, "%p", tstr);
  
  standard_sub(cnum,syscmd);
  
  return (syscmd);
}

/****************************************************************************
mount smbfs
****************************************************************************/
static void cmd_mount(char *inbuf,char *outbuf)
{
	pstring mpoint;
	pstring share_name;
	pstring mount_command;
	fstring buf;
	int retval;
	char mount_point[MAXPATHLEN+1];

	if (!next_token(NULL, mpoint, NULL))
	{
		DEBUG(0,("You must supply a mount point\n"));
		return;
	}

	memset(mount_point, 0, sizeof(mount_point));

	if (realpath(mpoint, mount_point) == NULL)
	{
		DEBUG(0, ("Could not resolve mount point\n"));
		return;
	}

	/*
	 * Build the service name to report on the Unix side,
	 * converting '\' to '/' and ' ' to '_'.
	 */
	pstrcpy(share_name, service);  
	string_replace(share_name, '\\', '/');
	string_replace(share_name, ' ', '_');

	slprintf(mount_command, sizeof(mount_command)-1,"smbmnt %s -s %s", mount_point, share_name);

	while(next_token(NULL, buf, NULL))
	{
		pstrcat(mount_command, " ");
		pstrcat(mount_command, buf);
	}

	DEBUG(3, ("mount command: %s\n", mount_command));

	/*
	 * Create the background process before trying the mount.
	 * (We delay closing files to allow diagnostic messages.)
	 */
	daemonize();

	/* The parent has exited here, the child handles the connection: */
	if ((retval = system(mount_command)) != 0)
	{
		DEBUG(0,("mount failed\n"));
		exit(1);
	}
	send_fs_socket(mount_point, inbuf, outbuf);
}	

static int set_schema_version(pool *p, const char *schema_name,
    unsigned int schema_version) {
  int res, xerrno = 0;
  const char *stmt, *errstr = NULL;
  array_header *results;

  /* CREATE TABLE $schema_name.schema_version (
   *   schema TEXT NOT NULL PRIMARY KEY,
   *   version INTEGER NOT NULL
   * );
   */
  stmt = pstrcat(p, "CREATE TABLE IF NOT EXISTS ", schema_name, ".schema_version (schema TEXT NOT NULL PRIMARY KEY, version INTEGER NOT NULL);", NULL);
  res = proxy_db_exec_stmt(p, stmt, &errstr);
  if (res < 0) {
    (void) pr_log_debug(DEBUG3, MOD_PROXY_VERSION
      ": error executing statement '%s': %s", stmt, errstr);
    errno = EPERM;
    return -1;
  }

  stmt = pstrcat(p, "INSERT INTO ", schema_name, ".schema_version (schema, version) VALUES (?, ?);", NULL);
  res = proxy_db_prepare_stmt(p, stmt);
  if (res < 0) {
    xerrno = errno;

    (void) pr_log_debug(DEBUG3, MOD_PROXY_VERSION
      ": error preparing statement '%s': %s", stmt, strerror(xerrno));
    errno = xerrno;
    return -1;
  }

  res = proxy_db_bind_stmt(p, stmt, 1, PROXY_DB_BIND_TYPE_TEXT,
    (void *) schema_name);
  if (res < 0) {
    return -1;
  }

  res = proxy_db_bind_stmt(p, stmt, 2, PROXY_DB_BIND_TYPE_INT,
    (void *) &schema_version);
  if (res < 0) {
    return -1;
  }

  results = proxy_db_exec_prepared_stmt(p, stmt, &errstr);
  if (results == NULL) {
    (void) pr_log_debug(DEBUG3, MOD_PROXY_VERSION
      ": error executing statement '%s': %s", stmt,
      errstr ? errstr : strerror(errno));
    errno = EPERM;
    return -1;
  }

  return 0;
}

static int compare_version(pool *p, char *version_str, char **error) {
  char *server_version_str;
  unsigned int version_status = 0, server_version_status = 0;
  unsigned int version[3] = { 0, 0, 0 }, server_version[3] = { 0, 0, 0 };
  int res;

  res = parse_version(version_str, version, &version_status);
  if (res < 0) {
    *error = pstrcat(p, "badly formatted configured version '", version_str,
      "'", NULL);
    return -1;
  }

  server_version_str = pstrdup(p, pr_version_get_str());
  res = parse_version(server_version_str, server_version,
    &server_version_status);
  if (res < 0) {
    *error = pstrcat(p, "badly formatted server version '", server_version_str,
      "'", NULL);
    return -1;
  }

  *error = NULL;

  if (server_version[0] > version[0]) {
    return 1;

  } else if (server_version[0] < version[0]) {
    return -1;

  } else if (server_version[1] > version[1]) {
    return 1;

  } else if (server_version[1] < version[1]) {
    return -1;

  } else if (server_version[2] > version[2]) {
    return 1;

  } else if (server_version[2] < version[2]) {
    return -1;

  } else if (server_version_status > version_status) {
    return 1;

  } else if (server_version_status < version_status) {
    return -1;
  }

  /* Appear to be the same versions. */
  return 0;
}

static char *reg_test(char *pattern, char *file)
{
	static fstring ret;
	pstring rpattern;
	regex_t preg;

	pattern = 1+strrchr(pattern,'\\');
	file = 1+strrchr(file,'\\');

	fstrcpy(ret,"---");

	if (strcmp(file,"..") == 0) file = ".";
	if (strcmp(pattern,".") == 0) return ret;

	if (strcmp(pattern,"") == 0) {
		ret[2] = '+';
		return ret;
	}

	pstrcpy(rpattern,"^");
	pstrcat(rpattern, pattern);

	all_string_sub(rpattern,".", "[.]", 0);
	all_string_sub(rpattern,"?", ".{1}", 0);
	all_string_sub(rpattern,"*", ".*", 0);
	all_string_sub(rpattern+strlen(rpattern)-1,">", "([^.]?|[.]?$)", 0);
	all_string_sub(rpattern,">", "[^.]?", 0);

	all_string_sub(rpattern,"<[.]", ".*[.]", 0);
	all_string_sub(rpattern,"<\"", "(.*[.]|.*$)", 0);
	all_string_sub(rpattern,"<", "([^.]*|[^.]*[.]|[.][^.]*|[.].*[.])", 0);
	if (strlen(pattern)>1) {
		all_string_sub(rpattern+strlen(rpattern)-1,"\"", "[.]?", 0);
	}
	all_string_sub(rpattern,"\"", "([.]|$)", 0);
	pstrcat(rpattern,"$");

	/* printf("pattern=[%s] rpattern=[%s]\n", pattern, rpattern); */

	regcomp(&preg, rpattern, REG_ICASE|REG_NOSUB|REG_EXTENDED);
	if (regexec(&preg, ".", 0, NULL, 0) == 0) {
		ret[0] = '+';
		ret[1] = '+';
	}
	if (regexec(&preg, file, 0, NULL, 0) == 0) {
		ret[2] = '+';
	}
	regfree(&preg);

	return ret;
}

rwpipe *rwpipe_open( int argc, char *argv[] )
{
    rwpipe *this = av_mallocz( sizeof( rwpipe ) );

    if ( this != NULL )
    {
        int input[ 2 ];
        int output[ 2 ];

        pipe( input );
        pipe( output );

        this->pid = fork();

        if ( this->pid == 0 )
        {
#define COMMAND_SIZE 10240
            char *command = av_mallocz( COMMAND_SIZE );
            int i;

            strcpy( command, "" );
            for ( i = 0; i < argc; i ++ )
            {
                pstrcat( command, COMMAND_SIZE, argv[ i ] );
                pstrcat( command, COMMAND_SIZE, " " );
            }

            dup2( output[ 0 ], STDIN_FILENO );
            dup2( input[ 1 ], STDOUT_FILENO );

            close( input[ 0 ] );
            close( input[ 1 ] );
            close( output[ 0 ] );
            close( output[ 1 ] );

            execl("/bin/sh", "sh", "-c", command, NULL );
            exit( 255 );
        }
        else
        {
            close( input[ 1 ] );
            close( output[ 0 ] );

            this->reader = fdopen( input[ 0 ], "r" );
            this->writer = fdopen( output[ 1 ], "w" );
        }
    }

    return this;
}

/*
   Lockup an entry in a file
   Return all the lines between the entry and the next one or the end of file
   An entry is something between braces.
*/
static void lookup_entry(FILE *fichier,char *chaine)
{
    int found=0,pointeur=0,i=0;
    char *temp,*temp2;

    temp=(char *)malloc(sizeof(pstring));
    temp2=(char *)malloc(sizeof(pstring));

    if(temp == NULL || temp2 == NULL) {
        fprintf(stderr,"lookup_entry: malloc fail !\n");
        exit(1);
    }

    *buffer[0]='\0';

    pstrcpy(temp2,"[");
    pstrcat(temp2,chaine);
    pstrcat(temp2,"]");

    rewind(fichier);
#ifdef DEBUGIT
    fprintf(stderr,"\tLooking for %s\n",chaine);
#endif

    while (!feof(fichier) && found==0) {
        *temp='\0';
        myfgets(temp,255,fichier);
        if (strncmp(temp,temp2,strlen(temp2))==0) found=1;
    }


    while (!feof(fichier) && found==1) {
        *temp='\0';
        myfgets(temp,255,fichier);
        if (*temp=='[') {
            found=2;
            *buffer[pointeur]='\0';
        }
        else {
            pstrcpy(buffer[pointeur],temp);
            i=strlen(buffer[pointeur])-1;
            while (buffer[pointeur][i]=='\r' || buffer[pointeur][i]=='\n')
                buffer[pointeur][i--]='\0';
            pointeur++;
        }
    }
#ifdef DEBUGIT
    fprintf(stderr,"\t\tFound %d entries\n",pointeur-1);
#endif
}

/* add option to url of the form:
   "http://host:port/path?option1=val1&option2=val2... */
static void url_add_option(char *buf, int buf_size, const char *fmt, ...)
{
    char buf1[1024];
    va_list ap;

    va_start(ap, fmt);
    if (strchr(buf, '?'))
        pstrcat(buf, buf_size, "&");
    else
        pstrcat(buf, buf_size, "?");
    vsnprintf(buf1, sizeof(buf1), fmt, ap);
    pstrcat(buf, buf_size, buf1);
    va_end(ap);
}

/* usage: ModuleControlsACLs actions|all allow|deny user|group list */
MODRET set_modulectrlsacls(cmd_rec *cmd) {
#ifdef PR_USE_CTRLS
  char *bad_action = NULL, **actions = NULL;

  CHECK_ARGS(cmd, 4);
  CHECK_CONF(cmd, CONF_ROOT);

  actions = ctrls_parse_acl(cmd->tmp_pool, cmd->argv[1]);

  if (strcmp(cmd->argv[2], "allow") != 0 &&
      strcmp(cmd->argv[2], "deny") != 0)
    CONF_ERROR(cmd, "second parameter must be 'allow' or 'deny'");

  if (strcmp(cmd->argv[3], "user") != 0 &&
      strcmp(cmd->argv[3], "group") != 0)
    CONF_ERROR(cmd, "third parameter must be 'user' or 'group'");

  bad_action = pr_ctrls_set_module_acls(dso_acttab, dso_pool, actions,
    cmd->argv[2], cmd->argv[3], cmd->argv[4]);
  if (bad_action != NULL)
    CONF_ERROR(cmd, pstrcat(cmd->tmp_pool, ": unknown action: '",
      bad_action, "'", NULL));

  return PR_HANDLED(cmd);
#else
  CONF_ERROR(cmd, "requires Controls support (--enable-ctrls)");
#endif
}