Date: Sun, 20 Aug 1995 14:12:14 +0800 (CST) From: jdli@csie.nctu.edu.tw (Chien-Ta Lee) To: freebsd-ports@FreeBSD.ORG Subject: A better CHDIR for wu-ftpd-2.4 Message-ID: <199508200613.OAA24271@phoenix.csie.nctu.edu.tw>
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Hi :
Here is a patch to make wu-ftpd-2.4 can automatically search
directories when user CHDIR, it is ugly, but it works.
It should work on all OSs which wu-ftpd-2.4 supports.
eg.
Directories on FTP server...
hahadir/
hehedir/
goddir/
users can only input...
cd ha
cd he
cd go
patch it and add -DSMART_CD in config.h
--------------------------------------------------
*** ftpd.c.orig Thu May 18 17:57:34 1995
--- ftpd.c Thu May 18 18:01:23 1995
***************
*** 2208,2213 ****
--- 2208,2355 ----
ack("DELE");
}
+ #ifdef SMART_CD
+
+ /*
+ * Smart CD, written by jdli@csie.nctu.edu.tw, May.18 1995
+ *
+ * This is a replacement of original CD, it should act almost like
+ * the ftpd at ftp.edu.tw (I hope) , you are freely to mondify it.
+ * add "#define SMART_CD" into ~/src/config.h
+ * Please notice following things :
+ * Please use a better algorithm b'cos mine is stupid (I think)
+ * and please notice the overhead, memory useage and performance.
+ * And, please send a patch to me, thanks a lot !! :-)
+ *
+ */
+
+ char *strstri(char *str, char *word)
+ {
+ char tmp_str[MAXPATHLEN + 1], tmp_word[MAXPATHLEN + 1], *cp;
+ int i;
+
+ for (i=0; i < strlen(str); i++) {
+ tmp_str[i] = toupper(str[i]);
+ }
+ for (i=0; i < strlen(word); i++) {
+ tmp_word[i] = toupper(word[i]);
+ }
+ tmp_str[strlen(str)] = tmp_word[strlen(word)] = '\0';
+ if ((cp = strstr(tmp_str, tmp_word)) != NULL) {
+ return ((char *)(str + (cp - tmp_str)));
+ }
+ return ((char *) NULL);
+ }
+
+ cwd(char *path)
+ {
+ extern int match(char *s, char *p);
+ struct aclmember *entry = NULL;
+ char cdpath[MAXPATHLEN + 1], dirname[MAXPATHLEN + 1];
+ DIR *dirp = NULL;
+ char pass1_cdpath[MAXPATHLEN + 1], pass2_cdpath[MAXPATHLEN + 1], *tmp_cp;
+ int pass1_point, pass2_point, tmp_point;
+ struct stat st;
+
+ #ifdef HAVE_DIRENT
+ struct dirent *dir;
+ #else
+ struct direct *dir;
+ #endif
+
+
+ #ifdef HAVE_GETCWD
+ extern char *getcwd();
+ #else
+ extern char *getwd(char *);
+ #endif
+
+ if (chdir(path) < 0) {
+ #ifdef HAVE_GETCWD
+ getcwd(dirname, MAXPATHLEN);
+ #else
+ getwd(dirname);
+ #endif
+ /*
+ * Use two-pass algorithm
+ * Pass one, case-sensitive
+ * Pass two, case-insensitive
+ */
+
+ if ((dirp = opendir(dirname)) != NULL) {
+ pass1_point = pass2_point = 17084;
+ while ((dir = readdir(dirp)) != NULL) {
+ if (!stat(dir->d_name, &st) && !(st.st_mode & S_IFDIR)) continue;
+ /* Pass one */
+ if (((tmp_cp = strstr(dir->d_name, path)) != NULL)
+ && ((tmp_point = (int) (tmp_cp - dir->d_name)) < pass1_point)) {
+ pass1_point = tmp_point;
+ strcpy(pass1_cdpath, dir->d_name);
+ }
+ /* Pass two */
+ if (((tmp_cp = strstri(dir->d_name, path)) != NULL)
+ && ((tmp_point = (int) (tmp_cp - dir->d_name)) < pass2_point)) {
+ pass2_point = tmp_point;
+ strcpy(pass2_cdpath, dir->d_name);
+ }
+ }
+ }
+ (void) closedir(dirp);
+
+ tmp_cp = (char *) NULL;
+ if (pass1_point != 17084)
+ tmp_cp = pass1_cdpath;
+ else if (pass2_point != 17084)
+ tmp_cp = pass2_cdpath;
+
+ if (tmp_cp && (chdir(tmp_cp) >= 0)) {
+ show_message(250, C_WD);
+ show_readme(250, C_WD);
+ reply(250, "Searching Key: \"%s\". Change to an appropriate directory \"%s\".", path, tmp_cp);
+ /* ack("CWD");*/
+ return;
+ }
+
+ /* alias checking */
+ while (getaclentry("alias", &entry) && ARG0 && ARG1 != NULL) {
+ if (!strcasecmp(ARG0, path)) {
+ if (chdir(ARG1) < 0)
+ perror_reply(550, path);
+ else {
+ show_message(250, C_WD);
+ show_readme(250, C_WD);
+ reply(250, "Change alias to the directory \"%s\".", path);
+ /* ack("CWD");*/
+ }
+ return;
+ }
+ }
+ /* check for "cdpath" directories. */
+ entry = (struct aclmember *) NULL;
+ while (getaclentry("cdpath", &entry) && ARG0 != NULL) {
+ strcpy(cdpath,ARG0);
+ strcat(cdpath,"/");
+ strcat(cdpath, path);
+ if (chdir(cdpath) >= 0) {
+ show_message(250, C_WD);
+ show_readme(250, C_WD);
+ reply(250, "Change cdpath to the directory \"%s\".", path);
+ /* ack("CWD");*/
+ return;
+ }
+ }
+ reply(250, "Unable to locate an appropriate directory for \"%s\" in \"%s\".", path, dirname);
+ /* perror_reply(550,path);*/
+ } else {
+ show_message(250, C_WD);
+ show_readme(250, C_WD);
+ reply(250, "Change exactly to the directory \"%s\".", path);
+ /* ack("CWD");*/
+ }
+ }
+
+ #else /* original CD */
+
cwd(char *path)
{
struct aclmember *entry = NULL;
***************
*** 2247,2252 ****
--- 2389,2395 ----
ack("CWD");
}
}
+ #endif /* endif SMART_CD */
makedir(char *name)
{
------------------------------------------------------
--
李 建 達 (Adonis) 交大資工
Mail: jdli@csie.nctu.edu.tw
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