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-rw-r--r--lib/ftp.c295
1 files changed, 171 insertions, 124 deletions
diff --git a/lib/ftp.c b/lib/ftp.c
index 231741ddd..33d9be45e 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -1446,30 +1446,22 @@ static CURLcode ftp_state_list(struct connectdata *conn)
The other ftp_filemethods will CWD into dir/dir/ first and
then just do LIST (in that case: nothing to do here)
*/
- char *lstArg = NULL;
- char *cmd;
-
- if((data->set.ftp_filemethod == FTPFILE_NOCWD) && ftp->path) {
- /* url-decode before evaluation: e.g. paths starting/ending with %2f */
- const char *slashPos = NULL;
- char *rawPath = NULL;
- result = Curl_urldecode(data, ftp->path, 0, &rawPath, NULL, TRUE);
+ char *cmd, *lstArg;
+ const char *inpath = ftp->path;
+
+ lstArg = NULL;
+ if((data->set.ftp_filemethod == FTPFILE_NOCWD) &&
+ inpath && inpath[0] && strchr(inpath, '/')) {
+ /* chop off the file part if format is dir/file
+ otherwise remove the trailing slash for dir/dir/
+ and full paths like %2f/ except for / */
+ size_t n = strrchr(inpath, '/') - inpath;
+ if(n == 0)
+ ++n;
+
+ result = Curl_urldecode(data, inpath, n, &lstArg, NULL, TRUE);
if(result)
return result;
-
- slashPos = strrchr(rawPath, '/');
- if(slashPos) {
- /* chop off the file part if format is dir/file otherwise remove
- the trailing slash for dir/dir/ except for absolute path / */
- size_t n = slashPos - rawPath;
- if(n == 0)
- ++n;
-
- lstArg = rawPath;
- lstArg[n] = '\0';
- }
- else
- free(rawPath);
}
cmd = aprintf("%s%s%s",
@@ -1478,12 +1470,15 @@ static CURLcode ftp_state_list(struct connectdata *conn)
(data->set.ftp_list_only?"NLST":"LIST"),
lstArg? " ": "",
lstArg? lstArg: "");
- free(lstArg);
- if(!cmd)
+ if(!cmd) {
+ free(lstArg);
return CURLE_OUT_OF_MEMORY;
+ }
result = Curl_pp_sendf(&conn->proto.ftpc.pp, "%s", cmd);
+
+ free(lstArg);
free(cmd);
if(result)
@@ -3137,8 +3132,8 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status,
ssize_t nread;
int ftpcode;
CURLcode result = CURLE_OK;
- char *rawPath = NULL;
- size_t pathLen = 0;
+ char *path = NULL;
+ size_t pathlen = 0;
if(!ftp)
return CURLE_OK;
@@ -3186,8 +3181,8 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status,
}
if(!result)
- /* get the url-decoded "raw" path */
- result = Curl_urldecode(data, ftp->path, 0, &rawPath, &pathLen, TRUE);
+ /* get the "raw" path */
+ result = Curl_urldecode(data, ftp->path, 0, &path, &pathlen, TRUE);
if(result) {
/* We can limp along anyway (and should try to since we may already be in
* the error path) */
@@ -3197,22 +3192,22 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status,
ftpc->prevpath = NULL; /* no path remembering */
}
else { /* remember working directory for connection reuse */
- if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (rawPath[0] == '/'))
- free(rawPath); /* full path => no CWDs happened => keep ftpc->prevpath */
+ if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (path[0] == '/'))
+ free(path); /* full path => no CWDs happened => keep ftpc->prevpath */
else {
free(ftpc->prevpath);
if(!ftpc->cwdfail) {
if(data->set.ftp_filemethod == FTPFILE_NOCWD)
- pathLen = 0; /* relative path => working directory is FTP home */
+ pathlen = 0; /* relative path => working directory is FTP home */
else
- pathLen -= ftpc->file?strlen(ftpc->file):0; /* file is url-decoded */
+ pathlen -= ftpc->file?strlen(ftpc->file):0; /* file is url-decoded */
- rawPath[pathLen] = '\0';
- ftpc->prevpath = rawPath;
+ path[pathlen] = '\0';
+ ftpc->prevpath = path;
}
else {
- free(rawPath);
+ free(path);
ftpc->prevpath = NULL; /* no path */
}
}
@@ -4092,140 +4087,192 @@ CURLcode ftp_parse_url_path(struct connectdata *conn)
/* the ftp struct is already inited in ftp_connect() */
struct FTP *ftp = data->req.protop;
struct ftp_conn *ftpc = &conn->proto.ftpc;
- const char *slashPos = NULL;
- const char *fileName = NULL;
+ const char *slash_pos; /* position of the first '/' char in curpos */
+ const char *path_to_use = ftp->path;
+ const char *cur_pos;
+ const char *filename = NULL;
+ char *path = NULL;
+ size_t pathlen = 0;
CURLcode result = CURLE_OK;
- char *rawPath = NULL; /* url-decoded "raw" path */
- size_t pathLen = 0;
+
+ cur_pos = path_to_use; /* current position in path. point at the begin of
+ next path component */
ftpc->ctl_valid = FALSE;
ftpc->cwdfail = FALSE;
- /* url-decode ftp path before further evaluation */
- result = Curl_urldecode(data, ftp->path, 0, &rawPath, &pathLen, TRUE);
- if(result)
- return result;
-
switch(data->set.ftp_filemethod) {
- case FTPFILE_NOCWD: /* fastest, but less standard-compliant */
-
- if((pathLen > 0) && (rawPath[pathLen - 1] != '/'))
- fileName = rawPath; /* this is a full file path */
- /*
- else: ftpc->file is not used anywhere other than for operations on
- a file. In other words, never for directory operations.
- So we can safely leave filename as NULL here and use it as a
- argument in dir/file decisions.
- */
- break;
+ case FTPFILE_NOCWD:
+ /* fastest, but less standard-compliant */
- case FTPFILE_SINGLECWD:
- slashPos = strrchr(rawPath, '/');
- if(slashPos) {
- /* get path before last slash, except for / */
- size_t dirlen = slashPos - rawPath;
- if(dirlen == 0)
- dirlen++;
-
- ftpc->dirs = calloc(1, sizeof(ftpc->dirs[0]));
- if(!ftpc->dirs) {
- free(rawPath);
- return CURLE_OUT_OF_MEMORY;
- }
-
- ftpc->dirs[0] = calloc(1, dirlen + 1);
- if(!ftpc->dirs[0]) {
- free(rawPath);
- return CURLE_OUT_OF_MEMORY;
- }
+ /*
+ The best time to check whether the path is a file or directory is right
+ here. so:
- strncpy(ftpc->dirs[0], rawPath, dirlen);
- ftpc->dirdepth = 1; /* we consider it to be a single dir */
- fileName = slashPos + 1; /* rest is file name */
+ the first condition in the if() right here, is there just in case
+ someone decides to set path to NULL one day
+ */
+ if(path_to_use[0] &&
+ (path_to_use[strlen(path_to_use) - 1] != '/') )
+ filename = path_to_use; /* this is a full file path */
+ /*
+ else {
+ ftpc->file is not used anywhere other than for operations on a file.
+ In other words, never for directory operations.
+ So we can safely leave filename as NULL here and use it as a
+ argument in dir/file decisions.
}
- else
- fileName = rawPath; /* file name only (or empty) */
+ */
+ break;
+
+ case FTPFILE_SINGLECWD:
+ /* get the last slash */
+ if(!path_to_use[0]) {
+ /* no dir, no file */
+ ftpc->dirdepth = 0;
break;
+ }
+ slash_pos = strrchr(cur_pos, '/');
+ if(slash_pos || !*cur_pos) {
+ size_t dirlen = slash_pos-cur_pos;
- default: /* allow pretty much anything */
- case FTPFILE_MULTICWD: {
- /* current position: begin of next path component */
- const char *curPos = rawPath;
+ ftpc->dirs = calloc(1, sizeof(ftpc->dirs[0]));
+ if(!ftpc->dirs)
+ return CURLE_OUT_OF_MEMORY;
- int dirAlloc = 0; /* number of entries allocated for the 'dirs' array */
- const char *str = rawPath;
- for(; *str != 0; ++str)
- if (*str == '/')
- ++dirAlloc;
+ if(!dirlen)
+ dirlen++;
- ftpc->dirs = calloc(dirAlloc, sizeof(ftpc->dirs[0]));
- if(!ftpc->dirs) {
- free(rawPath);
- return CURLE_OUT_OF_MEMORY;
+ result = Curl_urldecode(conn->data, slash_pos ? cur_pos : "/",
+ slash_pos ? dirlen : 1,
+ &ftpc->dirs[0], NULL,
+ TRUE);
+ if(result) {
+ freedirs(ftpc);
+ return result;
}
+ ftpc->dirdepth = 1; /* we consider it to be a single dir */
+ filename = slash_pos ? slash_pos + 1 : cur_pos; /* rest is file name */
+ }
+ else
+ filename = cur_pos; /* this is a file name only */
+ break;
+
+ default: /* allow pretty much anything */
+ case FTPFILE_MULTICWD:
+ ftpc->dirdepth = 0;
+ ftpc->diralloc = 5; /* default dir depth to allocate */
+ ftpc->dirs = calloc(ftpc->diralloc, sizeof(ftpc->dirs[0]));
+ if(!ftpc->dirs)
+ return CURLE_OUT_OF_MEMORY;
+ /* we have a special case for listing the root dir only */
+ if(!strcmp(path_to_use, "/")) {
+ cur_pos++; /* make it point to the zero byte */
+ ftpc->dirs[0] = strdup("/");
+ ftpc->dirdepth++;
+ }
+ else {
/* parse the URL path into separate path components */
- while((slashPos = strchr(curPos, '/')) != NULL) {
- size_t compLen = slashPos - curPos;
-
- /* path starts with a slash: add that as a directory */
- if((compLen == 0) && (ftpc->dirdepth == 0))
- ++compLen;
-
- /* we skip empty path components, like "x//y" since the FTP command
- CWD requires a parameter and a non-existent parameter a) doesn't
- work on many servers and b) has no effect on the others. */
- if(compLen > 0) {
- char *comp = calloc(1, compLen + 1);
- if(!comp) {
- free(rawPath);
+ while((slash_pos = strchr(cur_pos, '/')) != NULL) {
+ /* 1 or 0 pointer offset to indicate absolute directory */
+ ssize_t absolute_dir = ((cur_pos - ftp->path > 0) &&
+ (ftpc->dirdepth == 0))?1:0;
+
+ /* seek out the next path component */
+ if(slash_pos-cur_pos) {
+ /* we skip empty path components, like "x//y" since the FTP command
+ CWD requires a parameter and a non-existent parameter a) doesn't
+ work on many servers and b) has no effect on the others. */
+ size_t len = slash_pos - cur_pos + absolute_dir;
+ result = Curl_urldecode(conn->data, cur_pos - absolute_dir, len,
+ &ftpc->dirs[ftpc->dirdepth], NULL,
+ TRUE);
+ if(result) {
+ freedirs(ftpc);
+ return result;
+ }
+ }
+ else {
+ cur_pos = slash_pos + 1; /* jump to the rest of the string */
+ if(!ftpc->dirdepth) {
+ /* path starts with a slash, add that as a directory */
+ ftpc->dirs[ftpc->dirdepth] = strdup("/");
+ if(!ftpc->dirs[ftpc->dirdepth++]) { /* run out of memory ... */
+ failf(data, "no memory");
+ freedirs(ftpc);
+ return CURLE_OUT_OF_MEMORY;
+ }
+ }
+ continue;
+ }
+
+ cur_pos = slash_pos + 1; /* jump to the rest of the string */
+ if(++ftpc->dirdepth >= ftpc->diralloc) {
+ /* enlarge array */
+ char **bigger;
+ ftpc->diralloc *= 2; /* double the size each time */
+ bigger = realloc(ftpc->dirs, ftpc->diralloc * sizeof(ftpc->dirs[0]));
+ if(!bigger) {
+ freedirs(ftpc);
return CURLE_OUT_OF_MEMORY;
}
- strncpy(comp, curPos, compLen);
- ftpc->dirs[ftpc->dirdepth++] = comp;
+ ftpc->dirs = bigger;
}
- curPos = slashPos + 1;
}
- DEBUGASSERT(ftpc->dirdepth <= dirAlloc);
- fileName = curPos; /* the rest is the file name (or empty) */
}
+ filename = cur_pos; /* the rest is the file name */
break;
} /* switch */
- if(fileName && *fileName)
- ftpc->file = strdup(fileName);
+ if(filename && *filename) {
+ result = Curl_urldecode(conn->data, filename, 0, &ftpc->file, NULL, TRUE);
+
+ if(result) {
+ freedirs(ftpc);
+ return result;
+ }
+ }
else
- ftpc->file = NULL; /* instead of point to a zero byte,
- we make it a NULL pointer */
+ ftpc->file = NULL; /* instead of point to a zero byte, we make it a NULL
+ pointer */
if(data->set.upload && !ftpc->file && (ftp->transfer == FTPTRANSFER_BODY)) {
/* We need a file name when uploading. Return error! */
failf(data, "Uploading to a URL without a file name!");
- free(rawPath);
return CURLE_URL_MALFORMAT;
}
ftpc->cwddone = FALSE; /* default to not done */
- if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (rawPath[0] == '/'))
+ /* prevpath and ftpc->file are url-decoded so convert the input path
+ before we compare the strings */
+ result = Curl_urldecode(conn->data, ftp->path, 0, &path, &pathlen, TRUE);
+ if(result) {
+ freedirs(ftpc);
+ return result;
+ }
+
+ if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (path[0] == '/'))
ftpc->cwddone = TRUE; /* skip CWD for absolute paths */
else { /* newly created FTP connections are already in entry path */
- const char *oldPath = conn->bits.reuse ? ftpc->prevpath : "";
- if(oldPath) {
- size_t n = pathLen;
+ const char *oldpath = conn->bits.reuse ? ftpc->prevpath : "";
+ if(oldpath) {
if(data->set.ftp_filemethod == FTPFILE_NOCWD)
- n = 0; /* CWD to entry for relative paths */
+ pathlen = 0; /* CWD to entry for relative paths */
else
- n -= ftpc->file?strlen(ftpc->file):0;
+ pathlen -= ftpc->file?strlen(ftpc->file):0;
+
+ path[pathlen] = '\0';
- if((strlen(oldPath) == n) && !strncmp(rawPath, oldPath, n)) {
+ if(!strcmp(path, oldpath)) {
infof(data, "Request has same path as previous transfer\n");
ftpc->cwddone = TRUE;
}
}
}
+ free(path);
- free(rawPath);
return CURLE_OK;
}